/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.028);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --body:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(0,0,0,.35);
  --sh-card-h:0 16px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --font-cn:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"Inter","SF Mono",ui-monospace,Menlo,Consolas,monospace;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-cn);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(760px 500px at 10% -10%, rgba(31,224,192,.10), transparent 62%),
    radial-gradient(680px 480px at 94% 4%, rgba(55,182,255,.09), transparent 64%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.035;
  background-image:
    linear-gradient(rgba(255,255,255,.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.9) 1px, transparent 1px);
  background-size:80px 80px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
button,input,textarea,select{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,224,192,.28);color:#fff}

/* Foundation 覆盖 */
.grid-container{padding-left:0;padding-right:0;max-width:none}
.grid-x{margin-left:-10px;margin-right:-10px}
.grid-x > .cell{padding-left:10px;padding-right:10px}
.grid-x.grid-margin-x{margin-left:-10px;margin-right:-10px}
.grid-x.grid-margin-x > .cell{width:calc(100% - 20px);margin-left:10px;margin-right:10px}
@media screen and (min-width:640px){
  .grid-x.grid-margin-x{margin-left:-15px;margin-right:-15px}
  .grid-x.grid-margin-x > .cell{width:calc(100% - 30px);margin-left:15px;margin-right:15px}
}
@media screen and (min-width:1024px){
  .grid-x.grid-margin-x > .cell.small-12{width:calc(100% - 30px)}
  .grid-x.grid-margin-x > .cell.medium-6{width:calc(50% - 30px)}
  .grid-x.grid-margin-x > .cell.large-4{width:calc(33.3333% - 30px)}
  .grid-x.grid-margin-x > .cell.large-5{width:calc(41.6667% - 30px)}
  .grid-x.grid-margin-x > .cell.large-6{width:calc(50% - 30px)}
  .grid-x.grid-margin-x > .cell.large-7{width:calc(58.3333% - 30px)}
  .grid-x.grid-margin-x > .cell.large-8{width:calc(66.6667% - 30px)}
}
@media screen and (min-width:640px){
  .grid-x.grid-margin-x > .cell.medium-6{width:calc(50% - 30px)}
  .grid-x.grid-margin-x > .cell.large-4{width:calc(50% - 30px)}
}
@media screen and (max-width:639px){
  .grid-x.grid-margin-x > .cell{width:100%}
}

/* ===== 容器 ===== */
.at-container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.at-container--mid{max-width:1140px}
.at-container--narrow{max-width:780px}
@media screen and (max-width:1023px){.at-container{padding:0 24px}}
@media screen and (max-width:639px){.at-container{padding:0 16px}}

/* ===== 标题体系 ===== */
.at-h1{font-size:clamp(28px,4.4vw,48px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0 0 18px;color:var(--text)}
.at-h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;margin:0 0 12px;color:var(--text)}
.at-h3{font-size:20px;font-weight:600;line-height:1.45;margin:0 0 10px;color:var(--text)}
@media screen and (max-width:639px){.at-h3{font-size:18px}}
.at-lead{font-size:15px;line-height:1.8;color:var(--muted);margin:0 0 28px;max-width:660px}
.at-body{font-size:16px;line-height:1.85;color:var(--body);margin:0 0 16px}
.at-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin:0 0 16px;
  border:1px solid rgba(31,224,192,.28);background:rgba(31,224,192,.08);
  border-radius:var(--r-pill);padding:5px 14px;
}
.at-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,224,192,.9)}

/* ===== 按钮 ===== */
.at-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             filter var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;text-align:center;
}
.at-btn i{font-size:14px}
.at-btn--primary{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  color:#03221D;
  box-shadow:0 8px 24px rgba(31,224,192,.28), inset 0 0 0 1px rgba(255,255,255,.22);
}
.at-btn--primary:hover{color:#03221D;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 14px 32px rgba(31,224,192,.4), inset 0 0 0 1px rgba(255,255,255,.3)}
.at-btn--primary:active{transform:translateY(0);box-shadow:none;filter:brightness(.96)}
.at-btn--ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text)}
.at-btn--ghost:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.at-btn--ghost:active{transform:translateY(0)}
.at-btn--sm{height:42px;padding:0 18px;font-size:14px}
.at-btn--xs{height:34px;padding:0 14px;font-size:13px}
.at-btn--block{width:100%}
.at-link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.at-link-more i{transition:transform var(--dur) var(--ease)}
.at-link-more:hover i{transform:translateX(3px)}

/* ===== 导航 ===== */
.at-header{
  position:sticky;top:0;z-index:60;width:100%;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.at-header.is-scrolled{
  background:rgba(5,8,15,.82);
  border-bottom-color:var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.at-header__inner{display:flex;align-items:center;gap:24px;height:64px}
.at-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.1;flex:0 0 auto;padding:4px 0}
.at-logo__main{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.at-logo__sub{font-size:11px;letter-spacing:.22em;color:var(--brand);margin-top:2px}
.at-logo:hover .at-logo__main{color:var(--brand)}
.at-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto}
.at-nav__link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:10px;
  font-size:14px;color:var(--muted);
}
.at-nav__link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.at-nav__link.is-active{color:var(--text);font-weight:600}
.at-nav__link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 12px rgba(31,224,192,.7);
}
.at-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.at-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:260px;height:42px;padding:0 10px 0 36px;
  border-radius:var(--r-btn);background:var(--glass);border:1px solid var(--line);
  transition:width 240ms var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-search > i{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted)}
.at-search input{flex:1 1 auto;min-width:0;height:100%;background:transparent;border:0;outline:none;font-size:14px;color:var(--text)}
.at-search input::placeholder{color:#64748B}
.at-search:focus-within{width:360px;border-color:rgba(31,224,192,.55);box-shadow:0 0 0 3px rgba(31,224,192,.14)}
.at-key{font-family:var(--font-mono);font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:2px 6px;line-height:1.2}
.at-icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--glass);color:var(--muted);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.at-icon-btn:hover{color:var(--brand);border-color:rgba(31,224,192,.5);transform:translateY(-1px)}
.at-burger{display:none}

/* 抽屉 */
.at-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:linear-gradient(180deg,rgba(16,26,46,.98),rgba(5,8,15,.98));
  border-left:1px solid var(--line);padding:24px 20px 32px;
  transform:translateX(102%);transition:transform 260ms var(--ease);
  overflow-y:auto;
}
.at-drawer.is-open{transform:translateX(0)}
.at-drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.at-drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.at-drawer__nav a{padding:14px 12px;border-radius:var(--r-btn);font-size:15px;color:var(--body);border:1px solid transparent}
.at-drawer__nav a:hover,.at-drawer__nav a.is-active{background:var(--glass);border-color:var(--line);color:var(--text)}
.at-drawer__nav a.is-active{border-color:rgba(31,224,192,.4);color:var(--brand)}
.at-mask{
  position:fixed;inset:0;background:rgba(3,5,10,.7);z-index:80;opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.at-mask.is-open{opacity:1;visibility:visible}

/* ===== Hero ===== */
.at-hero{position:relative;z-index:1;overflow:hidden;padding:76px 0 68px;border-bottom:1px solid var(--line)}
.at-hero__bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  opacity:.22;filter:saturate(.9);
}
.at-hero__veil{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(620px 420px at 78% 22%, rgba(31,224,192,.22), transparent 66%),
    radial-gradient(520px 380px at 12% 84%, rgba(55,182,255,.16), transparent 68%),
    linear-gradient(90deg, rgba(5,8,15,.96) 0%, rgba(5,8,15,.82) 46%, rgba(5,8,15,.58) 100%);
}
.at-hero__inner{position:relative;z-index:1}
.at-hero__copy{max-width:640px}
.at-hero__sub{font-size:17px;line-height:1.8;color:var(--body);margin:0 0 28px;max-width:540px}
.at-hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.at-badges{display:flex;flex-wrap:wrap;gap:10px}
.at-badge-mini{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;background:var(--glass-2);
}
.at-badge-mini strong{font-family:var(--font-mono);color:var(--brand);font-size:13px;font-weight:600}

/* 玻璃面板 */
.at-panel{
  border-radius:var(--r-card);border:1px solid rgba(255,255,255,.09);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-card);overflow:hidden;
}
.at-panel__head{
  display:flex;align-items:center;gap:10px;padding:16px 20px;
  font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);
  position:relative;
}
.at-panel__head::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:rgba(255,255,255,.18)}
.at-panel__dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,224,192,.9)}
.at-panel__count{margin-left:auto;font-family:var(--font-mono);font-size:12px;color:var(--brand)}
.at-panel__row{
  display:flex;align-items:center;gap:12px;padding:16px 20px;
  border-bottom:1px solid var(--line);color:var(--body);font-size:14px;
  transition:background-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.at-panel__row:last-of-type{border-bottom:0}
.at-panel__row:hover{background:rgba(31,224,192,.07);color:var(--text);padding-left:24px}
.at-panel__icon{
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  width:32px;height:32px;border-radius:10px;font-size:13px;color:var(--brand);
  background:rgba(31,224,192,.1);border:1px solid rgba(31,224,192,.24);
}
.at-panel__name{font-weight:600;color:var(--text);flex:0 0 auto}
.at-panel__desc{margin-left:auto;font-size:12px;color:var(--muted)}
.at-panel__arrow{font-size:12px;color:var(--muted);flex:0 0 auto}
.at-panel__row:hover .at-panel__arrow{color:var(--brand)}
.at-panel__foot{padding:14px 20px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);background:rgba(255,255,255,.02)}

/* ===== 数据信任条 ===== */
.at-trust{border-bottom:1px solid var(--line);background:rgba(10,17,32,.5);position:relative;z-index:1}
.at-trust__inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.at-trust__item{padding:28px 24px;border-left:1px solid var(--line)}
.at-trust__item:first-child{border-left:0;padding-left:0}
.at-trust__num{font-family:var(--font-mono);font-size:28px;font-weight:600;color:var(--brand);line-height:1.2;letter-spacing:0}
.at-trust__label{font-size:13px;color:var(--muted);margin-top:6px}
@media screen and (max-width:639px){
  .at-trust__inner{grid-template-columns:repeat(2,1fr)}
  .at-trust__item{padding:20px 16px;border-left:1px solid var(--line)}
  .at-trust__item:nth-child(odd){border-left:0;padding-left:0}
  .at-trust__item:nth-child(3),.at-trust__item:nth-child(4){border-top:1px solid var(--line)}
  .at-trust__num{font-size:24px}
}

/* ===== 板块 ===== */
.at-section{padding:96px 0;position:relative;z-index:1}
.at-section--tight{padding:56px 0}
.at-section--dark{background:linear-gradient(180deg,rgba(10,17,32,.72),rgba(5,8,15,0))}
.at-section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.at-section__head .at-h2{margin-bottom:6px}
.at-section__head .at-lead{margin-bottom:0}
@media screen and (max-width:1023px){.at-section{padding:72px 0}.at-section--tight{padding:44px 0}}
@media screen and (max-width:639px){.at-section{padding:56px 0}.at-section__head{margin-bottom:28px}}

/* ===== 双栏图文 ===== */
.at-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.at-split--wide{grid-template-columns:5fr 7fr}
.at-split__text .at-body{max-width:560px}
.at-figure{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.at-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.at-figure:hover img{transform:scale(1.04)}
.at-figure__badge{
  position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);font-size:12px;color:var(--text);
  background:rgba(5,8,15,.72);border:1px solid rgba(31,224,192,.35);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.at-figure__badge i{color:var(--brand);font-size:12px}
@media screen and (max-width:1023px){
  .at-split,.at-split--wide{grid-template-columns:1fr;gap:32px}
}

/* ===== 卡片 ===== */
.at-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:5px 11px;border-radius:var(--r-pill);
  color:var(--brand);border:1px solid rgba(31,224,192,.35);background:rgba(31,224,192,.08);
}
.at-badge--accent{color:var(--accent);border-color:rgba(255,106,43,.35);background:rgba(255,106,43,.1)}
.at-card{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(255,255,255,.09);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.at-card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-h);border-color:rgba(31,224,192,.45)}
.at-card__media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-2)}
.at-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.at-card:hover .at-card__media img{transform:scale(1.05)}
.at-card__tag{position:absolute;left:14px;top:14px;z-index:2}
.at-card__body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.at-card__title{
  font-size:20px;font-weight:600;line-height:1.45;margin:0 0 10px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.at-card__desc{
  font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 20px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.at-card__meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--muted);padding-top:16px;border-top:1px solid var(--line);
}
.at-card__meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted)}
.at-card__meta .more{margin-left:auto;color:var(--brand);display:inline-flex;align-items:center;gap:5px}
.at-card:hover .at-card__meta .more i{transform:translateX(3px)}
.at-card__meta .more i{transition:transform var(--dur) var(--ease)}

/* 通栏大卡 */
.at-card--wide{flex-direction:row;align-items:stretch}
.at-card--wide .at-card__media{flex:0 0 52%;aspect-ratio:auto;min-height:300px}
.at-card--wide .at-card__body{flex:1 1 auto;padding:32px;justify-content:center}
.at-card--wide .at-card__title{font-size:26px;-webkit-line-clamp:2}
.at-card--wide .at-card__desc{font-size:15px;-webkit-line-clamp:3}
@media screen and (max-width:1023px){
  .at-card--wide{flex-direction:column}
  .at-card--wide .at-card__media{flex:none;aspect-ratio:16/9;min-height:0}
  .at-card--wide .at-card__body{padding:24px}
  .at-card--wide .at-card__title{font-size:21px}
}

/* ===== CMS 资讯列表 ===== */
.at-news-grid{margin-bottom:-24px}
.at-news-grid > .cell{margin-bottom:24px}
.at-news-item{
  display:flex;gap:16px;height:100%;padding:16px;
  border-radius:var(--r-card);border:1px solid rgba(255,255,255,.09);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.at-news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-card-h);border-color:rgba(31,224,192,.45);color:var(--text)}
.at-news-item__thumb{
  flex:0 0 200px;width:200px;height:120px;border-radius:12px;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);position:relative;
}
.at-news-item__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.at-news-item:hover .at-news-item__thumb img{transform:scale(1.05)}
.at-news-item__body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.at-news-item__title{
  font-size:16px;font-weight:600;line-height:1.5;margin:0 0 8px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.at-news-item__desc{
  font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.at-news-item__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.at-news-item__meta .sep{width:3px;height:3px;border-radius:50%;background:var(--muted)}
.at-news-item__meta .cat{color:var(--brand)}
@media screen and (max-width:520px){
  .at-news-item{flex-direction:column}
  .at-news-item__thumb{flex:none;width:100%;height:auto;aspect-ratio:16/9}
}
.at-empty{
  display:flex;flex-direction:column;align-items:flex-start;gap:16px;
  padding:32px;border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.16);
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  color:var(--muted);font-size:15px;
}

/* ===== 矩阵 ===== */
.at-matrix .cell{margin-bottom:24px}
.at-matrix__card{
  position:relative;height:100%;padding:28px;border-radius:var(--r-card);
  border:1px solid rgba(255,255,255,.09);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.at-matrix__card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,192,.16),transparent 68%);pointer-events:none;
}
.at-matrix__card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-h);border-color:rgba(31,224,192,.45)}
.at-matrix__icon{
  display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;
  border-radius:14px;font-size:18px;color:var(--brand);
  background:rgba(31,224,192,.1);border:1px solid rgba(31,224,192,.26);margin-bottom:18px;
}
.at-matrix__list{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px}
.at-matrix__list span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 12px}
@media screen and (min-width:1024px){
  .at-matrix__card:nth-child(even){margin-top:32px}
}

/* ===== FAQ ===== */
.at-faq-wrap{max-width:900px}
.at-faq.accordion{border:0;background:transparent;margin:0;padding:0}
.at-faq .accordion-item{
  margin-bottom:12px;border:1px solid rgba(255,255,255,.09);border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-faq .accordion-item.is-active{border-color:rgba(31,224,192,.45);box-shadow:0 12px 34px rgba(0,0,0,.4)}
.at-faq .accordion-title{
  position:relative;display:block;padding:20px 56px 20px 24px;
  font-size:16px;font-weight:600;color:var(--text);background:transparent;border:0;line-height:1.6;
}
.at-faq .accordion-title:hover{color:var(--brand)}
.at-faq .accordion-title::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:transparent;transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-faq .accordion-item.is-active .accordion-title::before{
  background:var(--brand);box-shadow:0 0 14px rgba(31,224,192,.8);
}
.at-faq .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform 200ms var(--ease);
}
.at-faq .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg)}
.at-faq .accordion-content{
  border:0;background:transparent;padding:0 24px 22px;color:var(--muted);
  font-size:15px;line-height:1.85;
}
.at-faq .accordion-content p:last-child{margin-bottom:0}

/* ===== CTA ===== */
.at-cta{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.1);
  background:linear-gradient(120deg,rgba(31,224,192,.12),rgba(55,182,255,.06) 46%,rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  padding:40px;box-shadow:var(--sh-card);
}
.at-cta::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,192,.2),transparent 66%);pointer-events:none;
}
.at-cta__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center}
.at-cta__form{display:flex;gap:12px;flex-wrap:wrap}
.at-field{flex:1 1 240px;min-width:0}
.at-input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
  font-size:14px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-input::placeholder{color:#64748B}
.at-input:focus{border-color:rgba(31,224,192,.6);box-shadow:0 0 0 3px rgba(31,224,192,.14)}
.at-cta__note{font-size:12px;color:var(--muted);margin:14px 0 0;line-height:1.7}
@media screen and (max-width:1023px){
  .at-cta{padding:28px}
  .at-cta__inner{grid-template-columns:1fr;gap:20px}
}

/* ===== 页脚 ===== */
.at-footer{position:relative;z-index:1;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(5,8,15,.96));padding:64px 0 28px}
.at-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.at-footer__brand .at-logo{margin-bottom:16px}
.at-footer__desc{font-size:13px;line-height:1.85;color:var(--muted);max-width:330px;margin:0}
.at-footer__col summary{
  list-style:none;cursor:default;font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;
}
.at-footer__col summary::-webkit-details-marker{display:none}
.at-footer__links{display:flex;flex-direction:column;gap:10px}
.at-footer__links a{font-size:13px;color:var(--muted)}
.at-footer__links a:hover{color:var(--brand)}
.at-footer__form .at-input{height:44px;margin-bottom:12px}
.at-footer__form .at-btn{height:44px;width:100%}
.at-footer__tip{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.7}
.at-footer__line{height:1px;background:var(--line);margin:44px 0 22px}
.at-footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.at-footer__bottom a{color:var(--muted)}
.at-footer__bottom a:hover{color:var(--brand)}
@media screen and (max-width:1023px){
  .at-footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .at-footer__col summary{cursor:pointer;position:relative;padding-right:26px;margin-bottom:0;padding-top:6px;padding-bottom:6px}
  .at-footer__col summary::after{
    content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
    color:var(--brand);font-size:18px;transition:transform var(--dur) var(--ease);
  }
  .at-footer__col[open] summary::after{transform:translateY(-50%) rotate(45deg)}
  .at-footer__col[open] .at-footer__links,
  .at-footer__col[open] .at-footer__tip{margin-top:14px}
}
@media screen and (max-width:639px){
  .at-footer__grid{grid-template-columns:1fr}
  .at-footer{padding:44px 0 24px}
}

/* ===== 响应式导航 ===== */
@media screen and (max-width:1100px){
  .at-search{width:180px}
  .at-search:focus-within{width:240px}
}
@media screen and (max-width:1023px){
  .at-header__inner{height:56px;gap:16px}
  .at-nav{display:none}
  .at-search{display:none}
  .at-actions .at-btn{display:none}
  .at-burger{display:inline-flex}
  .at-logo__main{font-size:15px}
  .at-logo__sub{font-size:10px}
}

/* ===== 动效偏好 ===== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .at-card:hover,.at-news-item:hover,.at-matrix__card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.055);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --body:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-ctl:12px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(0,0,0,.35);
  --sh-hover:0 16px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:80px 80px,80px 80px;
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3}
h1{font-size:clamp(28px,3.4vw,48px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.4vw,32px)}
h3{font-size:clamp(18px,1.6vw,20px);font-weight:600}
p{margin:0 0 16px}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
a:active{opacity:.82}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,224,192,.28);color:#04120F}

/* ---------- 容器 ---------- */
.at-container{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.at-container--page{max-width:1140px}
.at-container--read{max-width:780px}

/* ---------- 导航 ---------- */
.at-header{
  position:sticky;top:0;z-index:80;
  height:64px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(5,8,15,.92),rgba(5,8,15,0));
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
  border-bottom:1px solid transparent;
}
.at-header.is-scrolled{
  background:rgba(8,13,24,.74);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.at-header__inner{display:flex;align-items:center;gap:20px;width:100%;height:100%}
.at-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.at-brand:hover{text-decoration:none}
.at-logo{display:inline-flex;flex-direction:column;line-height:1.06}
.at-logo__main{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.at-logo__sub{font-size:10px;letter-spacing:.34em;color:var(--brand);margin-top:2px}
.at-nav{display:flex;align-items:center;gap:2px;margin-left:4px}
.at-nav__link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--body);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.at-nav__link:hover{color:var(--text);background:rgba(255,255,255,.055);text-decoration:none}
.at-nav__link.is-active{color:var(--text);font-weight:600}
.at-nav__link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(31,224,192,.85);
}
.at-header__actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.at-search{
  display:flex;align-items:center;gap:8px;
  width:260px;height:40px;padding:0 10px;
  border-radius:var(--r-ctl);border:1px solid var(--line);
  background:var(--glass);
  transition:width .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.at-search i{color:var(--muted);font-size:13px}
.at-search:focus-within{
  width:360px;border-color:rgba(31,224,192,.55);
  box-shadow:0 0 0 3px rgba(31,224,192,.14);
}
.at-search input{flex:1 1 auto;min-width:0;height:100%;border:0;background:none;outline:none;color:var(--text);font-size:14px;font-family:inherit}
.at-search input::placeholder{color:var(--muted)}
.at-search kbd{
  font-family:var(--mono);font-size:11px;line-height:1;
  padding:4px 6px;border-radius:6px;color:var(--muted);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
}
.at-iconbtn{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:var(--r-ctl);border:1px solid var(--line);
  background:transparent;color:var(--body);cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.at-iconbtn:hover{color:var(--brand);border-color:rgba(31,224,192,.5);background:rgba(31,224,192,.06)}
.at-burger{
  display:none;width:44px;height:44px;place-items:center;
  border-radius:var(--r-ctl);border:1px solid var(--line);
  background:transparent;color:var(--text);cursor:pointer;
}
.at-burger:hover{border-color:rgba(31,224,192,.5);color:var(--brand)}

/* ---------- 按钮 ---------- */
.at-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-ctl);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease),background .2s var(--ease);
}
.at-btn:hover{text-decoration:none}
.at-btn--primary{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  color:#04120F;
  box-shadow:0 8px 24px rgba(31,224,192,.28),inset 0 0 0 1px rgba(255,255,255,.25);
}
.at-btn--primary:hover{color:#04120F;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 14px 34px rgba(31,224,192,.42),inset 0 0 0 1px rgba(255,255,255,.3)}
.at-btn--primary:active{transform:none;box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.at-btn--ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text)}
.at-btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.at-btn--ghost:active{transform:none;opacity:.85}
.at-btn--sm{height:42px;padding:0 18px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.at-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;color:var(--brand);
  border:1px solid rgba(31,224,192,.45);background:rgba(31,224,192,.08);
}
.at-badge--soft{color:var(--muted);border-color:var(--line);background:rgba(255,255,255,.045)}
.at-tagrow{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.at-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);font-size:12px;color:var(--body);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.at-tag:hover{color:var(--brand);border-color:rgba(31,224,192,.45);background:rgba(31,224,192,.07)}

/* ---------- 面包屑 ---------- */
.at-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.at-crumbs a{color:var(--muted)}
.at-crumbs a:hover{color:var(--brand)}
.at-crumbs__sep{color:rgba(255,255,255,.22)}
.at-crumbs [aria-current="page"]{color:var(--body)}

/* ---------- 玻璃卡 ---------- */
.at-glass{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-card);
}
.at-glass::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
}

/* ---------- Hero ---------- */
.at-hero{position:relative;overflow:hidden;padding:52px 0 60px;border-bottom:1px solid var(--line)}
.at-hero__bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.2;
}
.at-hero__veil{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 340px at 16% -12%,rgba(31,224,192,.2),transparent 70%),
    radial-gradient(620px 300px at 90% 4%,rgba(55,182,255,.14),transparent 72%),
    linear-gradient(180deg,rgba(5,8,15,.4),var(--bg-0) 90%);
}
.at-hero__inner{position:relative;z-index:2}
.at-hero__grid{align-items:center}
.at-hero__title{margin:14px 0 14px}
.at-hero__sub{font-size:16px;color:var(--body);max-width:34em;margin-bottom:26px}
.at-hero__actions{display:flex;flex-wrap:wrap;gap:12px}
.at-hero__media{margin-top:0}
.at-figure{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.at-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s var(--ease)}
.at-figure:hover img{transform:scale(1.03)}
.at-figure__cap{
  position:absolute;left:12px;bottom:12px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text);
  background:rgba(6,10,18,.72);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}

/* ---------- 数据条 ---------- */
.at-band{border-bottom:1px solid var(--line);background:rgba(10,17,32,.45)}
.at-stats{display:flex;flex-wrap:wrap;align-items:stretch}
.at-stat{
  flex:1 1 0;min-width:150px;padding:22px 24px;
  border-left:1px solid var(--line);
}
.at-stat:first-child{border-left:0;padding-left:0}
.at-stat__num{
  display:block;font-family:var(--mono);font-size:clamp(24px,2.4vw,34px);
  line-height:1.1;color:var(--brand);letter-spacing:0;
}
.at-stat__label{display:block;margin-top:6px;font-size:12px;color:var(--muted)}

/* ---------- 区块 ---------- */
.at-section{padding:96px 0}
.at-section--tight{padding:72px 0}
.at-section--alt{background:linear-gradient(180deg,rgba(16,26,46,.5),rgba(5,8,15,0))}
.at-section__head{max-width:720px;margin-bottom:40px}
.at-section__sub{margin:12px 0 0;color:var(--muted);font-size:15px;max-width:42em}
.at-lead{font-size:17px;color:var(--text)}
.at-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:600}
.at-link i{transition:transform .2s var(--ease)}
.at-link:hover{color:var(--brand)}
.at-link:hover i{transform:translateX(2px)}

/* ---------- 要点矩阵 ---------- */
.at-matrix .at-matrix__main{padding-right:8px}
.at-matrix__main p{color:var(--body)}
.at-keycard{padding:26px 24px}
.at-keycard__title{margin-bottom:16px}
.at-keylist li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--body);
}
.at-keylist li:first-child{border-top:0;padding-top:0}
.at-keylist i{color:var(--brand);font-size:13px;margin-top:7px;flex:0 0 auto}
.at-keycard .at-badge{margin-top:16px}

/* ---------- 流程时间线 ---------- */
.at-steps{position:relative;max-width:820px;margin:0 auto}
.at-steps::before{
  content:"";position:absolute;left:19px;top:10px;bottom:26px;width:1px;
  background:linear-gradient(180deg,rgba(31,224,192,.6),rgba(255,255,255,.06));
}
.at-step{position:relative;padding:0 0 30px 68px}
.at-step:last-child{padding-bottom:0}
.at-step__dot{
  position:absolute;left:0;top:0;width:40px;height:40px;
  display:grid;place-items:center;border-radius:50%;
  font-family:var(--mono);font-size:14px;color:var(--brand);
  background:rgba(31,224,192,.08);border:1px solid rgba(31,224,192,.35);
  box-shadow:0 0 22px rgba(31,224,192,.14);
}
.at-step__title{margin:6px 0 8px;font-size:18px;font-weight:600}
.at-step__desc{margin:0;color:var(--muted);font-size:15px;max-width:60ch}

/* ---------- FAQ ---------- */
.at-faq-wrap{max-width:860px;margin:0 auto}
.at-faq.accordion{background:transparent;border:0;margin:0}
.at-faq .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.at-faq .accordion-item:hover{border-color:rgba(255,255,255,.18);box-shadow:var(--sh-card)}
.at-faq .accordion-item.is-active{
  border-color:rgba(31,224,192,.45);
  box-shadow:inset 3px 0 0 var(--brand),var(--sh-card);
}
.at-faq .accordion-title{
  position:relative;display:block;
  padding:18px 56px 18px 22px;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  background:transparent;border:0;
}
.at-faq .accordion-title:hover{background:rgba(31,224,192,.05);color:var(--text);text-decoration:none}
.at-faq .accordion-title::before{display:none !important}
.at-faq .accordion-title::after{
  content:"";position:absolute;right:24px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .22s var(--ease);
}
.at-faq .accordion-item.is-active .accordion-title::after{transform:translateY(-30%) rotate(-135deg)}
.at-faq .accordion-content{
  padding:0 22px 20px;border:0;background:transparent;
  color:var(--muted);font-size:15px;line-height:1.8;
}
.at-faq .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA 带 ---------- */
.at-cta{
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  padding:36px 32px;
  background:linear-gradient(120deg,rgba(31,224,192,.1),rgba(55,182,255,.06) 46%,rgba(255,255,255,.02));
  border:1px solid rgba(31,224,192,.28);border-radius:var(--r-img);
  box-shadow:var(--sh-card);
}
.at-cta__copy{max-width:640px}
.at-cta__copy h2{font-size:clamp(20px,2vw,26px);margin-bottom:10px}
.at-cta__copy p{margin:0;color:var(--body);font-size:15px}
.at-cta__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.at-footer{border-top:1px solid var(--line);background:rgba(8,13,24,.7);padding:64px 0 28px;margin-top:0}
.at-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.at-footer__col{min-width:0}
.at-footer__brand .at-logo{margin-bottom:16px}
.at-footer__desc{margin:0;color:var(--muted);font-size:14px;line-height:1.8;max-width:36em}
.at-footer details>summary{
  list-style:none;cursor:pointer;
  font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;
}
.at-footer details>summary::-webkit-details-marker{display:none}
.at-footer__links{display:flex;flex-direction:column;gap:10px}
.at-footer__links a{font-size:14px;color:var(--muted)}
.at-footer__links a:hover{color:var(--brand)}
.at-footer__form{display:flex;flex-direction:column;gap:10px}
.at-input{
  height:44px;padding:0 14px;border-radius:var(--r-ctl);
  border:1px solid var(--line);background:var(--glass);
  color:var(--text);font-size:14px;font-family:inherit;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.at-input::placeholder{color:var(--muted)}
.at-input:focus{border-color:rgba(31,224,192,.6);box-shadow:0 0 0 3px rgba(31,224,192,.14)}
.at-footer__tip{margin:12px 0 0;font-size:12px;color:var(--muted);line-height:1.7}
.at-footer__line{height:1px;background:var(--line);margin:44px 0 22px}
.at-footer__bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--muted);
}

/* ---------- Off-canvas ---------- */
.off-canvas-wrapper{background:transparent}
.off-canvas-content{box-shadow:none !important;background:transparent}
.at-offcanvas{
  width:300px;padding:22px 20px 32px;
  background:var(--bg-1);border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
}
.at-offcanvas__close{
  align-self:flex-end;width:44px;height:44px;
  display:grid;place-items:center;font-size:20px;line-height:1;
  border-radius:var(--r-ctl);border:1px solid var(--line);
  background:transparent;color:var(--text);cursor:pointer;
}
.at-offcanvas__close:hover{color:var(--brand);border-color:rgba(31,224,192,.5)}
.at-offcanvas__nav{display:flex;flex-direction:column;gap:4px}
.at-offcanvas__nav .at-nav__link{width:100%;padding:12px 14px;font-size:15px}
.at-offcanvas__nav .at-nav__link.is-active{background:rgba(31,224,192,.08);border:1px solid rgba(31,224,192,.3)}
.at-offcanvas__nav .at-nav__link.is-active::after{display:none}
.at-search--block{width:100%}
.at-search--block:focus-within{width:100%}

/* ---------- 动画降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .at-container{padding-left:24px;padding-right:24px}
  .at-nav{display:none}
  .at-search{display:none}
  .at-iconbtn{display:none}
  .at-header__actions .at-btn--primary{display:none}
  .at-burger{display:grid}
  .at-section{padding:72px 0}
  .at-section--tight{padding:56px 0}
  .at-footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .at-footer__brand{grid-column:1 / -1}
  .at-stats{flex-wrap:wrap}
  .at-stat{flex:1 1 50%;padding:18px 20px;border-left:1px solid var(--line)}
  .at-stat:nth-child(odd){border-left:0;padding-left:0}
  .at-hero__media{margin-top:28px}
}

@media screen and (max-width:639px){
  .at-container{padding-left:16px;padding-right:16px}
  .at-header{height:56px}
  .at-logo__main{font-size:16px}
  .at-hero{padding:36px 0 44px}
  .at-hero__sub{font-size:15.5px}
  .at-hero__actions .at-btn{width:100%}
  .at-section{padding:56px 0}
  .at-section__head{margin-bottom:28px}
  .at-stat{flex:1 1 50%;padding:16px 14px}
  .at-keycard{padding:20px}
  .at-step{padding-left:58px}
  .at-step__dot{width:36px;height:36px;font-size:13px}
  .at-steps::before{left:17px}
  .at-faq .accordion-title{padding:16px 48px 16px 18px;font-size:15.5px}
  .at-faq .accordion-content{padding:0 18px 18px}
  .at-cta{padding:24px 20px}
  .at-cta__actions{width:100%}
  .at-cta__actions .at-btn{width:100%}
  .at-footer{padding:44px 0 22px}
  .at-footer__grid{grid-template-columns:1fr;gap:18px}
  .at-footer__line{margin:28px 0 18px}
  .at-footer__bottom{flex-direction:column;gap:6px}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.03);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --prose:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-lg:0 16px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  background-image:
    radial-gradient(900px 420px at 78% -6%, rgba(31,224,192,.10), transparent 70%),
    radial-gradient(760px 380px at 8% 8%, rgba(55,182,255,.07), transparent 72%);
  background-repeat:no-repeat;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease);}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
a:active{opacity:.82;}
a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
.at-container{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px;}
.at-container--narrow{max-width:1140px;}
.at-container--article{max-width:1120px;}
.at-section{padding:96px 0;}
.at-section--tight{padding:72px 0;}
.at-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-weight:600;
}
.at-eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--brand),transparent);}
.at-h2{font-size:32px;line-height:1.3;}
.at-sub{color:var(--muted);font-size:15px;margin-top:12px;max-width:640px;}
.at-sectionhead{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.at-sectionhead__link{font-size:14px;color:var(--muted);white-space:nowrap;}
.at-sectionhead__link i{margin-left:6px;transition:transform .2s var(--ease);}
.at-sectionhead__link:hover i{transform:translateX(3px);}

/* 按钮 */
.at-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  text-decoration:none;line-height:1;white-space:nowrap;
}
.at-btn:hover{text-decoration:none;}
.at-btn--primary{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  color:#04211C;
  box-shadow:0 8px 24px rgba(31,224,192,.28), inset 0 0 0 1px rgba(255,255,255,.24);
}
.at-btn--primary:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(31,224,192,.36), inset 0 0 0 1px rgba(255,255,255,.3);color:#04211C;}
.at-btn--primary:active{transform:translateY(0);box-shadow:inset 0 0 0 1px rgba(255,255,255,.24);}
.at-btn--ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line-strong);
  color:var(--text);
}
.at-btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.at-btn--sm{min-height:42px;padding:0 18px;font-size:14px;}
.at-btn--xs{min-height:34px;padding:0 14px;font-size:13px;}
.at-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* 徽章与标签 */
.at-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:600;
  color:var(--brand);border:1px solid rgba(31,224,192,.45);
  background:rgba(31,224,192,.08);
}
.at-badge--accent{color:var(--accent);border-color:rgba(255,106,43,.42);background:rgba(255,106,43,.09);}
.at-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:12px;
  color:var(--muted);border:1px solid var(--line);background:var(--glass-2);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.at-tag:hover{color:var(--brand);border-color:rgba(31,224,192,.42);text-decoration:none;}

/* 阅读进度 */
.at-progress{position:fixed;top:0;left:0;right:0;height:2px;background:transparent;z-index:120;}
.at-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-2));box-shadow:0 0 12px rgba(31,224,192,.6);}

/* 导航 */
.at-header{
  position:sticky;top:0;z-index:100;height:var(--nav-h);
  background:rgba(5,8,15,.35);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.at-header.is-scrolled{
  background:rgba(5,8,15,.82);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.at-header__inner{height:var(--nav-h);display:flex;align-items:center;gap:28px;}
.at-brand{display:flex;align-items:center;flex-shrink:0;}
.at-logo{display:flex;flex-direction:column;line-height:1.15;}
.at-logo__main{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.at-logo__sub{font-size:11px;letter-spacing:.32em;color:var(--brand);font-weight:600;}
.at-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.at-nav__link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:10px;font-size:14.5px;color:var(--muted);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.at-nav__link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none;}
.at-nav__link.is-active{color:var(--text);}
.at-nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,224,192,.8);
}
.at-header__actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.at-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:260px;height:40px;padding:0 10px 0 12px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:width .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.at-search:focus-within{width:360px;border-color:rgba(31,224,192,.6);box-shadow:0 0 0 3px rgba(31,224,192,.16);}
.at-search i{color:var(--muted);font-size:13px;}
.at-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text);
}
.at-search input::placeholder{color:#64748B;}
.at-key{
  font-size:11px;color:var(--muted);border:1px solid var(--line-strong);
  border-radius:6px;padding:1px 6px;line-height:1.6;
}
.at-iconbtn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;color:var(--muted);
  background:var(--glass);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.at-iconbtn:hover{color:var(--brand);border-color:rgba(31,224,192,.45);transform:translateY(-1px);text-decoration:none;}
.at-burger{
  display:none;width:44px;height:44px;border-radius:12px;background:var(--glass);
  border:1px solid var(--line);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.at-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease),opacity .2s var(--ease);}
.at-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.at-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.at-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 抽屉 */
.at-drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,360px);z-index:130;
  background:rgba(10,17,32,.96);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  padding:22px 20px 32px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.at-drawer.is-open{transform:translateX(0);}
.at-drawer__head{display:flex;align-items:center;justify-content:space-between;}
.at-drawer__close{
  width:44px;height:44px;border-radius:12px;background:var(--glass);border:1px solid var(--line);
  color:var(--muted);cursor:pointer;
}
.at-drawer__nav{display:flex;flex-direction:column;gap:6px;}
.at-drawer__nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;
  background:var(--glass-2);border:1px solid var(--line);font-size:15px;color:var(--text);
}
.at-drawer__nav a.is-active{border-color:rgba(31,224,192,.5);color:var(--brand);}
.at-drawer__nav a:hover{text-decoration:none;border-color:rgba(31,224,192,.45);color:var(--brand);}
.at-drawer__search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border-radius:12px;background:var(--glass);border:1px solid var(--line);}
.at-drawer__search input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:15px;}
.at-drawer__mask{
  position:fixed;inset:0;background:rgba(2,4,9,.6);z-index:125;opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.at-drawer__mask.is-open{opacity:1;visibility:visible;}

/* 面包屑 */
.at-crumb{border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(16,26,46,.55),rgba(5,8,15,0));}
.at-crumb__inner{display:flex;align-items:center;gap:8px;min-height:54px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.at-crumb__sep{color:#475569;}
.at-crumb a{color:var(--muted);}
.at-crumb a:hover{color:var(--brand);text-decoration:none;}
.at-crumb__current{color:var(--text);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头部 */
.at-articlehead{padding:56px 0 40px;position:relative;}
.at-articlehead::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(620px 320px at 20% 0%,#000,transparent 76%);
  -webkit-mask-image:radial-gradient(620px 320px at 20% 0%,#000,transparent 76%);
}
.at-articlehead__inner{position:relative;max-width:860px;}
.at-articlehead__title{font-size:clamp(28px,4.2vw,46px);line-height:1.25;margin:18px 0 20px;}
.at-articlehead__meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--muted);}
.at-articlehead__meta i{color:var(--brand);margin-right:6px;}
.at-meta__dot{width:4px;height:4px;border-radius:50%;background:#334155;}
.at-lead{
  margin-top:26px;padding:20px 24px;border-radius:var(--r-card);
  background:linear-gradient(140deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-top-color:rgba(255,255,255,.18);
  color:var(--prose);font-size:15.5px;line-height:1.85;position:relative;
}
.at-lead::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--brand),rgba(31,224,192,0));}
.at-lead strong{color:var(--text);}

/* 文章栅格 */
.at-articlesec{padding:8px 0 72px;}
.at-articlesec__grid{align-items:flex-start;}
.at-articlesec__main{max-width:780px;}

/* 目录 */
.at-toc{
  border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  padding:18px 20px;box-shadow:var(--shadow);
}
.at-toc--desktop{position:sticky;top:88px;}
.at-toc__title{font-size:13px;letter-spacing:.1em;color:var(--muted);margin-bottom:12px;text-transform:uppercase;}
.at-toc__list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.at-toc__item a{
  display:block;padding:7px 12px;font-size:14px;color:var(--muted);border-left:2px solid transparent;margin-left:-1px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.at-toc__item a:hover{color:var(--text);text-decoration:none;background:rgba(255,255,255,.04);}
.at-toc__item a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(31,224,192,.07);}
.at-toc__item--sub a{padding-left:26px;font-size:13px;}
.at-toc--mobile{display:none;margin-bottom:28px;}
.at-toc--mobile summary{cursor:pointer;list-style:none;font-size:14px;font-weight:600;color:var(--text);display:flex;align-items:center;justify-content:space-between;min-height:44px;}
.at-toc--mobile summary::-webkit-details-marker{display:none;}
.at-toc--mobile[open] summary i{transform:rotate(45deg);}
.at-toc--mobile summary i{transition:transform .2s var(--ease);color:var(--brand);}

/* 正文排版 */
.at-article__body{font-size:16px;color:var(--prose);}
.at-article__body > * + *{margin-top:1.2em;}
.at-article__body p{line-height:1.9;color:var(--prose);}
.at-article__body h2{
  font-size:26px;line-height:1.35;color:var(--text);
  margin-top:2.2em;padding-left:14px;position:relative;
}
.at-article__body h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.5);}
.at-article__body h3{font-size:20px;line-height:1.5;margin-top:1.8em;color:var(--text);}
.at-article__body ul,.at-article__body ol{padding-left:1.3em;}
.at-article__body ul{list-style:none;}
.at-article__body ul li{position:relative;padding-left:16px;line-height:1.9;margin:.5em 0;}
.at-article__body ul li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--brand);transform:rotate(45deg);}
.at-article__body ol{list-style:decimal;}
.at-article__body ol li{line-height:1.9;margin:.5em 0;padding-left:4px;}
.at-article__body ol li::marker{color:var(--brand);font-weight:700;}
.at-article__body blockquote{
  padding:18px 22px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-top-color:rgba(255,255,255,.18);
  color:var(--text);font-size:15.5px;
}
.at-article__body blockquote p{color:var(--text);}
.at-article__body img{border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.35);margin:1.4em 0 .6em;}
.at-article__body figure{margin:1.6em 0;}
.at-article__body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.at-article__body a{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.at-article__body a:hover{color:var(--brand-2);}
.at-article__body strong{color:var(--text);font-weight:700;}
.at-article__body code{background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--brand);}
.at-article__body pre{
  background:#080D18;border:1px solid var(--line);border-radius:14px;padding:16px 18px;overflow-x:auto;font-size:14px;
}
.at-article__body pre code{background:none;padding:0;color:var(--prose);}
.at-article__body table{width:100%;font-size:14.5px;display:block;overflow-x:auto;border:1px solid var(--line);border-radius:14px;}
.at-article__body th,.at-article__body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.at-article__body th{color:var(--text);background:rgba(255,255,255,.04);font-weight:600;}
.at-article__body hr{border:0;height:1px;background:var(--line);margin:2.4em 0;}

/* 空态 */
.at-empty{
  text-align:center;padding:60px 28px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--line);color:var(--muted);
}
.at-empty i{font-size:28px;color:var(--brand);display:block;margin-bottom:14px;}
.at-empty p{margin-bottom:20px;color:var(--prose);}

/* 标签与操作 */
.at-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);}
.at-tags__label{font-size:13px;color:var(--muted);margin-right:4px;}
.at-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* 继续浏览双卡 */
.at-duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:56px;}
.at-duo__card{
  display:flex;flex-direction:column;gap:8px;
  padding:24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-top-color:rgba(255,255,255,.16);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.at-duo__card:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.5);box-shadow:var(--shadow-lg);text-decoration:none;}
.at-duo__label{font-size:12px;color:var(--brand);letter-spacing:.1em;}
.at-duo__title{font-size:18px;color:var(--text);font-weight:600;}
.at-duo__desc{font-size:14px;color:var(--muted);line-height:1.75;}

/* 相关推荐 */
.at-related{margin-top:72px;}
.at-related__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.at-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-top-color:rgba(255,255,255,.16);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.at-card:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.5);box-shadow:var(--shadow-lg);text-decoration:none;}
.at-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.at-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.at-card:hover .at-card__media img{transform:scale(1.05);}
.at-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.at-card__title{font-size:17px;line-height:1.5;color:var(--text);font-weight:600;}
.at-card__desc{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.at-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);}
.at-card__foot i{margin-left:6px;transition:transform .2s var(--ease);}
.at-card:hover .at-card__foot i{transform:translateX(3px);}

/* CTA 带 */
.at-cta{padding:0 0 96px;}
.at-cta__box{
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
  padding:40px;border-radius:var(--r-img);
  background:linear-gradient(140deg,rgba(31,224,192,.10),rgba(55,182,255,.06) 46%,rgba(255,255,255,.02));
  border:1px solid var(--line);border-top-color:rgba(255,255,255,.2);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow);
}
.at-cta__title{font-size:26px;line-height:1.35;}
.at-cta__desc{color:var(--muted);font-size:14.5px;margin-top:12px;}
.at-cta__form{display:flex;gap:12px;}
.at-input{
  flex:1;min-width:0;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--glass);border:1px solid var(--line);color:var(--text);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.at-input::placeholder{color:#64748B;}
.at-input:focus{border-color:rgba(31,224,192,.65);box-shadow:0 0 0 3px rgba(31,224,192,.16);}
.at-cta__note{grid-column:1/-1;font-size:12px;color:var(--muted);margin-top:4px;}

/* 页脚 */
.at-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(5,8,15,.9));padding:72px 0 32px;}
.at-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.at-footer__col{min-width:0;}
.at-footer__col summary{list-style:none;cursor:pointer;font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;min-height:32px;}
.at-footer__col summary::-webkit-details-marker{display:none;}
.at-footer__col summary i{display:none;color:var(--brand);transition:transform .2s var(--ease);}
.at-footer__desc{margin-top:16px;font-size:13.5px;color:var(--muted);line-height:1.9;max-width:380px;}
.at-footer__links{display:flex;flex-direction:column;gap:10px;}
.at-footer__links a{font-size:14px;color:var(--muted);min-height:28px;display:inline-flex;align-items:center;}
.at-footer__links a:hover{color:var(--brand);}
.at-footer__form{display:flex;flex-direction:column;gap:12px;}
.at-footer__tip{font-size:12px;color:var(--muted);line-height:1.8;margin-top:12px;}
.at-footer__line{height:1px;background:var(--line);margin:48px 0 24px;}
.at-footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);}

/* 响应式 */
@media screen and (max-width:1439px){
  .at-container{padding-left:24px;padding-right:24px;}
}
@media screen and (max-width:1199px){
  .at-nav__link{padding:0 10px;font-size:14px;}
  .at-search{width:210px;}
  .at-search:focus-within{width:280px;}
}
@media screen and (max-width:1023px){
  :root{--nav-h:56px;}
  .at-nav{display:none;}
  .at-search,.at-iconbtn{display:none;}
  .at-burger{display:flex;}
  .at-header__inner{gap:12px;}
  .at-container{padding-left:20px;padding-right:20px;}
  .at-section{padding:72px 0;}
  .at-section--tight{padding:56px 0;}
  .at-h2{font-size:26px;}
  .at-toc--desktop{display:none;}
  .at-toc--mobile{display:block;}
  .at-articlesec__main{max-width:100%;}
  .at-related__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .at-cta__box{grid-template-columns:1fr;padding:32px 24px;}
  .at-footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .at-footer__col summary i{display:inline-block;}
  .at-footer__col[open] summary i{transform:rotate(45deg);}
}
@media screen and (max-width:639px){
  body{font-size:15.5px;}
  .at-container{padding-left:16px;padding-right:16px;}
  .at-section{padding:56px 0;}
  .at-sectionhead{flex-direction:column;align-items:flex-start;gap:12px;}
  .at-h2{font-size:22px;}
  .at-articlehead{padding:36px 0 28px;}
  .at-articlehead__title{font-size:28px;}
  .at-lead{padding:16px 18px;font-size:15px;}
  .at-article__body h2{font-size:22px;}
  .at-article__body h3{font-size:18px;}
  .at-duo{grid-template-columns:1fr;}
  .at-related__grid{grid-template-columns:1fr;}
  .at-footer__grid{grid-template-columns:1fr;}
  .at-footer__form{flex-direction:column;}
  .at-cta__form{flex-direction:column;}
  .at-cta__form .at-btn{width:100%;}
  .at-crumb__current{max-width:100%;white-space:normal;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --body:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --sh-card:0 10px 30px rgba(0,0,0,.35);
  --sh-card-h:0 16px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
  --mono:"SF Mono","Inter",ui-monospace,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(31,224,192,.10),transparent 62%),
    radial-gradient(760px 480px at 96% 4%,rgba(55,182,255,.09),transparent 60%),
    var(--bg-0);
  background-attachment:fixed;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  margin:0 0 .6rem;
  color:var(--text);
  font-family:inherit;
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}

h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.9vw,32px);}
h3{font-size:clamp(18px,2vw,20px);font-weight:600;}
p{margin:0 0 1rem;font-size:16px;}
p:last-child{margin-bottom:0;}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);}
a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;}
::selection{background:rgba(31,224,192,.32);color:#03110E;}

.at-container{
  width:100%;
  max-width:1140px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}

.at-section{padding:56px 0;}
.at-section--tight{padding:40px 0;}
.at-section--line{border-top:1px solid var(--line);}

.at-overline{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:12px;
}

.at-lead{
  max-width:640px;
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
  margin:0;
}

.at-sec-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}

.at-linkmore{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--brand);
  white-space:nowrap;
}
.at-linkmore svg{transition:transform .2s var(--ease);}
.at-linkmore:hover svg{transform:translateX(3px);}

/* ---------- 顶部导航 ---------- */
.at-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,8,15,.55);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.at-header.is-scrolled{
  background:rgba(7,11,20,.86);
  border-bottom-color:var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}

.at-topbar{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--nav-h);
}

.at-logo{
  display:inline-flex;
  flex-direction:column;
  line-height:1.1;
  flex:0 0 auto;
}
.at-logo__main{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.02em;
}
.at-logo__sub{
  font-size:11px;
  letter-spacing:.24em;
  color:var(--brand);
}
.at-logo:hover .at-logo__main{color:var(--brand);}

.at-nav{
  display:none;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.at-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.at-nav__link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.at-nav__link.is-active{color:var(--text);}
.at-nav__link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(31,224,192,.8);
}

.at-search{
  display:none;
  align-items:center;
  gap:8px;
  width:220px;
  height:38px;
  padding:0 10px;
  border-radius:var(--r-btn);
  background:var(--glass);
  border:1px solid var(--line);
  transition:width .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.at-search:focus-within{
  width:320px;
  border-color:rgba(31,224,192,.55);
  box-shadow:0 0 0 3px rgba(31,224,192,.16);
}
.at-search svg{flex:0 0 auto;color:var(--muted);}
.at-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.at-search input::placeholder{color:rgba(148,163,184,.75);}
.at-kbd{
  flex:0 0 auto;
  font-size:11px;
  color:var(--muted);
  padding:1px 6px;
  border-radius:6px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  font-family:var(--mono);
}

.at-iconbtn{
  display:none;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.at-iconbtn:hover{color:var(--brand);border-color:rgba(31,224,192,.5);background:rgba(31,224,192,.06);}
.at-iconbtn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.at-navcta{
  display:none;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  color:#03110E;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 8px 24px rgba(31,224,192,.28);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.at-navcta:hover{
  color:#03110E;
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 10px 30px rgba(31,224,192,.4);
}
.at-navcta:active{transform:translateY(0);box-shadow:0 4px 14px rgba(31,224,192,.22);}

.at-burger{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  margin-left:auto;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
.at-burger:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 按钮 ---------- */
.at-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.at-btn--primary{
  color:#03110E;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-color:rgba(255,255,255,.22);
  box-shadow:0 8px 24px rgba(31,224,192,.28);
}
.at-btn--primary:hover{
  color:#03110E;
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 12px 32px rgba(31,224,192,.38);
}
.at-btn--primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(31,224,192,.18);}
.at-btn--ghost{
  color:var(--text);
  background:rgba(255,255,255,.03);
  border-color:rgba(255,255,255,.18);
}
.at-btn--ghost:hover{
  color:var(--brand);
  border-color:rgba(31,224,192,.55);
  background:rgba(31,224,192,.06);
}
.at-btn--sm{height:42px;padding:0 18px;font-size:14px;}
.at-btn--xs{height:34px;padding:0 14px;font-size:13px;}
.at-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 徽章 / 标签 ---------- */
.at-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  color:var(--brand);
  border:1px solid rgba(31,224,192,.45);
  background:rgba(31,224,192,.08);
  white-space:nowrap;
}
.at-badge--accent{color:var(--accent);border-color:rgba(255,106,43,.42);background:rgba(255,106,43,.08);}
.at-badge--muted{color:var(--muted);border-color:var(--line);background:rgba(255,255,255,.045);}
.at-tagrow{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 玻璃卡片 ---------- */
.at-glass{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.at-glass::before{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}

/* ---------- Hero ---------- */
.at-hero{
  position:relative;
  overflow:hidden;
  padding:44px 0 52px;
}
.at-hero__bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(5,8,15,.70),rgba(5,8,15,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.at-hero__glow{
  position:absolute;
  width:520px;
  height:520px;
  left:-140px;
  top:-200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,192,.20),transparent 66%);
  pointer-events:none;
}
.at-hero__mesh{
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:80px 80px;
  -webkit-mask-image:radial-gradient(circle at 28% 24%,#000,transparent 70%);
  mask-image:radial-gradient(circle at 28% 24%,#000,transparent 70%);
  pointer-events:none;
}
.at-hero .at-container{position:relative;z-index:2;}
.at-hero h1{margin-bottom:14px;}
.at-hero__sub{
  max-width:560px;
  font-size:16px;
  color:var(--muted);
  margin-bottom:26px;
}
.at-hero__actions{display:flex;flex-wrap:wrap;gap:12px;}

.at-hero__aside{
  margin-top:36px;
  padding:20px;
}
.at-hero__media{
  position:relative;
  border-radius:14px;
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);
}
.at-hero__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .28s var(--ease);
}
.at-hero__media:hover img{transform:scale(1.04);}
.at-hero__aside .at-badge{position:absolute;right:14px;bottom:14px;}
.at-hero__aside h3{margin:16px 0 8px;font-size:18px;}
.at-hero__aside p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- 数据条 ---------- */
.at-stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  overflow:hidden;
}
.at-stats__item{
  padding:20px 18px;
  border-bottom:1px solid var(--line);
}
.at-stats__item:nth-child(odd){border-right:1px solid var(--line);}
.at-stats__item:nth-last-child(-n+2){border-bottom:0;}
.at-stats__num{
  font-family:var(--mono);
  font-size:26px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:0;
  line-height:1.2;
}
.at-stats__label{font-size:12px;color:var(--muted);margin-top:4px;}

/* ---------- 对照区 ---------- */
.at-compare__col{
  padding:24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--sh-card);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.at-compare__col:hover{
  transform:translateY(-4px);
  border-color:rgba(31,224,192,.45);
  box-shadow:var(--sh-card-h);
}
.at-compare__col--strong{
  border-color:rgba(31,224,192,.35);
  background:linear-gradient(180deg,rgba(31,224,192,.10),rgba(255,255,255,.02));
}
.at-compare__head h3{margin-top:12px;}
.at-compare__head p{font-size:14px;color:var(--muted);}
.at-compare__list{margin-top:18px;}
.at-compare__item{
  min-height:96px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.at-compare__k{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.at-compare__item p{font-size:14px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- 特性网格 ---------- */
.at-feature{
  padding:24px;
  height:100%;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--sh-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.at-feature:hover{
  transform:translateY(-4px);
  border-color:rgba(31,224,192,.45);
  box-shadow:var(--sh-card-h);
}
.at-feature__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  color:var(--brand);
  border:1px solid rgba(31,224,192,.35);
  background:rgba(31,224,192,.08);
  margin-bottom:16px;
}
.at-feature h3{margin-bottom:8px;}
.at-feature p{font-size:14px;color:var(--muted);}
.at-feature__meta{
  margin-top:14px;
  font-size:12px;
  color:var(--muted);
  display:flex;
  gap:8px;
  align-items:center;
}

/* ---------- FAQ ---------- */
.at-faq{border:0;background:transparent;}
.at-faq .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--sh-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.at-faq .accordion-item:hover{border-color:rgba(31,224,192,.4);}
.at-faq .accordion-title{
  position:relative;
  border:0;
  padding:18px 52px 18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  background:transparent;
  transition:color .2s var(--ease);
}
.at-faq .accordion-title::before{display:none;}
.at-faq .accordion-title:hover{color:var(--brand);}
.at-faq .accordion-title::after{
  content:"";
  position:absolute;
  right:22px;
  top:50%;
  width:10px;
  height:10px;
  margin-top:-7px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(45deg);
  transition:transform .22s var(--ease);
}
.at-faq .accordion-item.is-active .accordion-title::after{transform:rotate(-135deg);margin-top:-3px;}
.at-faq .accordion-item.is-active{border-color:rgba(31,224,192,.45);}
.at-faq .accordion-item.is-active .accordion-title{color:var(--brand);}
.at-faq .accordion-content{
  border:0;
  padding:0 20px 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  background:transparent;
}
.at-faq .accordion-item.is-active .accordion-content{
  border-left:3px solid var(--brand);
  margin-left:20px;
  padding-left:17px;
}

/* ---------- CTA 带 ---------- */
.at-cta{
  padding:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.at-cta h2{margin-bottom:6px;font-size:clamp(20px,2.4vw,26px);}
.at-cta p{font-size:14px;color:var(--muted);margin:0;max-width:520px;}
.at-cta__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 面包屑 ---------- */
.at-crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:18px 0 0;
}
.at-crumb a{color:var(--muted);}
.at-crumb a:hover{color:var(--brand);}
.at-crumb__sep{color:rgba(148,163,184,.55);}
.at-crumb__now{color:var(--text);}

/* ---------- 页脚 ---------- */
.at-footer{
  margin-top:72px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(5,8,15,.95));
  padding:56px 0 28px;
}
.at-footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
.at-footer__col{min-width:0;}
.at-footer details>summary{
  list-style:none;
  cursor:pointer;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  padding-bottom:12px;
  margin-bottom:4px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.at-footer details>summary::-webkit-details-marker{display:none;}
.at-footer details>summary::after{
  content:"";
  width:8px;
  height:8px;
  border-right:1.5px solid var(--muted);
  border-bottom:1.5px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .2s var(--ease);
}
.at-footer details[open]>summary::after{transform:rotate(-135deg);}
.at-footer__brand .at-logo{margin-bottom:14px;}
.at-footer__desc{font-size:13px;color:var(--muted);line-height:1.85;margin:0;}
.at-footer__links{display:flex;flex-direction:column;gap:10px;padding-top:14px;}
.at-footer__links a{font-size:14px;color:var(--muted);}
.at-footer__links a:hover{color:var(--brand);}
.at-footer__form{display:flex;gap:10px;padding-top:14px;flex-wrap:wrap;}
.at-footer__form .at-input{flex:1 1 160px;min-width:0;height:42px;}
.at-footer__form .at-btn{height:42px;padding:0 16px;font-size:14px;}
.at-footer__tip{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.75;}
.at-footer__line{height:1px;background:var(--line);margin:36px 0 20px;}
.at-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--muted);
}

/* ---------- 表单 ---------- */
.at-input,
.at-textarea{
  width:100%;
  padding:0 14px;
  height:48px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.at-textarea{height:auto;padding:12px 14px;line-height:1.75;resize:vertical;min-height:120px;}
.at-input::placeholder,.at-textarea::placeholder{color:rgba(148,163,184,.75);}
.at-input:focus,.at-textarea:focus{
  outline:none;
  border-color:rgba(31,224,192,.6);
  background:rgba(31,224,192,.05);
  box-shadow:0 0 0 3px rgba(31,224,192,.16);
}
.at-field{margin-bottom:16px;}
.at-field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;}

/* ---------- 移动端 off-canvas ---------- */
.at-drawer{
  background:var(--bg-1);
  border-right:1px solid var(--line);
  width:290px;
}
.at-drawer__inner{padding:22px 20px 32px;}
.at-drawer__title{font-size:12px;letter-spacing:.16em;color:var(--muted);margin:22px 0 10px;}
.at-drawer__links{display:flex;flex-direction:column;gap:4px;}
.at-drawer__links a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--body);
}
.at-drawer__links a:hover{background:rgba(255,255,255,.05);color:var(--brand);}
.at-drawer__links a.is-active{color:var(--brand);background:rgba(31,224,192,.08);}
.at-drawer__search{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  margin-top:16px;
}
.at-drawer__search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  outline:none;
}
.at-drawer__cta{margin-top:18px;width:100%;}

/* ---------- 断点 ---------- */
@media screen and (min-width:640px){
  body{font-size:16px;}
  .at-container{padding-left:24px;padding-right:24px;}
  .at-section{padding:72px 0;}
  .at-stats{grid-template-columns:repeat(4,minmax(0,1fr));}
  .at-stats__item{border-bottom:0;border-right:1px solid var(--line);}
  .at-stats__item:nth-child(odd){border-right:1px solid var(--line);}
  .at-stats__item:last-child{border-right:0;}
  .at-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .at-hero{padding:56px 0 64px;}
}

@media screen and (min-width:1024px){
  .at-container{padding-left:32px;padding-right:32px;}
  .at-section{padding:96px 0;}
  .at-nav{display:flex;}
  .at-search{display:flex;}
  .at-iconbtn{display:inline-flex;}
  .at-navcta{display:inline-flex;}
  .at-burger{display:none;}
  .at-hero__aside{margin-top:0;padding:22px;}
  .at-footer__grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
  .at-footer{padding:72px 0 32px;margin-top:96px;}
}

@media screen and (min-width:1440px){
  .at-container{max-width:1140px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition:none !important;
    animation:none !important;
  }
  .at-feature:hover,.at-compare__col:hover,.at-hero__media:hover img{transform:none;}
}

/* roulang page: category3 */
/* ============================================================
   设计变量
   ============================================================ */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.02);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --body:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 10px 30px rgba(0,0,0,.35);
  --sh-2:0 16px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --mono:ui-monospace,"SF Mono","Inter",Menlo,Consolas,monospace;
  --nav-h:56px;
  --shell:1140px;
}
@media (min-width:1024px){
  :root{ --nav-h:64px; }
}

/* ============================================================
   基础 reset
   ============================================================ */
*,*::before,*::after{ box-sizing:border-box; }
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 20px);
}
body{
  margin:0;
  min-height:100%;
  background-color:var(--bg-0);
  color:var(--body);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:80px 80px;
  opacity:.55;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 84% -6%,rgba(31,224,192,.13),transparent 62%),
    radial-gradient(760px 460px at 4% 6%,rgba(55,182,255,.09),transparent 62%);
}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd,dt{ margin:0; padding:0; }
ul,ol{ list-style:none; }
img{ display:block; max-width:100%; height:auto; border:0; }
a{
  color:var(--text);
  text-decoration:none;
  transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
a:hover{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
button{
  font:inherit;
  color:inherit;
  background:none;
  border:0;
  cursor:pointer;
}
input,textarea,select{ font:inherit; color:inherit; }
:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
.at-visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
}

/* Foundation 覆盖 */
.off-canvas-wrapper{ overflow:visible; }
.off-canvas-content{ background:transparent; box-shadow:none; color:inherit; }
.accordion{ background:transparent; border:0; }
h1,h2,h3,h4,h5,h6{ color:var(--text); font-family:inherit; }

/* ============================================================
   容器
   ============================================================ */
.at-container{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
  position:relative;
  z-index:1;
}
@media (min-width:640px){
  .at-container{ padding-left:24px; padding-right:24px; }
}
@media (min-width:1024px){
  .at-container{ padding-left:32px; padding-right:32px; }
}
.at-container--wide{ max-width:1240px; }

/* ============================================================
   顶部导航
   ============================================================ */
.at-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,8,15,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.at-header.is-scrolled{
  background:rgba(5,8,15,.88);
  border-bottom-color:var(--line);
}
.at-navbar{
  display:flex;
  align-items:center;
  gap:14px;
  height:var(--nav-h);
}
.at-logo{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.12;
  flex:0 0 auto;
}
.at-logo:hover{ text-decoration:none; }
.at-logo__main{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
}
.at-logo__sub{
  font-size:11px;
  letter-spacing:.18em;
  color:var(--brand);
}
.at-nav{ display:none; }
@media (min-width:1024px){
  .at-nav{
    display:flex;
    align-items:center;
    gap:2px;
    margin-left:10px;
  }
}
.at-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
}
.at-nav__link:hover{
  color:var(--text);
  background:var(--glass);
  text-decoration:none;
}
.at-nav__link.is-active{ color:var(--text); }
.at-nav__link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(31,224,192,.75);
}
.at-navbar__tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:8px;
}
.at-search{
  display:none;
  align-items:center;
  gap:8px;
  height:42px;
  width:260px;
  padding:0 12px;
  border-radius:var(--r-btn);
  background:var(--glass);
  border:1px solid var(--line);
  transition:width var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
@media (min-width:1024px){
  .at-search{ display:flex; }
}
.at-search:focus-within{
  width:360px;
  border-color:rgba(31,224,192,.55);
  box-shadow:0 0 0 3px rgba(31,224,192,.14);
}
.at-search i{ color:var(--muted); font-size:13px; }
.at-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  background:transparent;
  border:0;
  outline:none;
  font-size:14px;
  color:var(--text);
}
.at-search input::placeholder{ color:rgba(148,163,184,.85); }
.at-search kbd{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:11px;
  color:var(--muted);
  padding:2px 6px;
  border-radius:6px;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.04);
}
.at-iconbtn{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--muted);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
@media (min-width:1024px){
  .at-iconbtn{ display:inline-flex; }
}
.at-iconbtn:hover{
  color:var(--brand);
  border-color:rgba(31,224,192,.45);
  transform:translateY(-1px);
}
.at-navbar__cta{ display:none; }
@media (min-width:1024px){
  .at-navbar__cta{ display:inline-flex; }
}
.at-burger{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--glass);
  position:relative;
}
@media (min-width:1024px){
  .at-burger{ display:none; }
}
.at-burger span,
.at-burger span::before,
.at-burger span::after{
  content:"";
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform var(--dur) var(--ease);
}
.at-burger span{ position:relative; }
.at-burger span::before{ position:absolute; top:-6px; left:0; }
.at-burger span::after{ position:absolute; top:6px; left:0; }
.at-burger:hover{ border-color:rgba(31,224,192,.45); }

/* 侧滑面板 */
.at-canvas{
  background:rgba(10,17,32,.97);
  border-right:1px solid var(--line);
  padding:18px 18px 28px;
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
}
.at-canvas__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.at-canvas__close{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  color:var(--muted);
}
.at-canvas__close:hover{ color:var(--brand); border-color:rgba(31,224,192,.45); }
.at-canvas .at-search--full{
  display:flex;
  width:100%;
  margin:18px 0 6px;
}
.at-canvas .at-search--full:focus-within{ width:100%; }
.at-canvas__nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  margin:14px 0 20px;
}
.at-canvas__nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--body);
  border-left:2px solid transparent;
}
.at-canvas__nav a:hover{
  background:var(--glass);
  color:var(--text);
  text-decoration:none;
}
.at-canvas__nav a.is-active{
  color:var(--brand);
  background:rgba(31,224,192,.1);
  border-left-color:var(--brand);
  border-radius:0 10px 10px 0;
}
.at-canvas__tip{
  font-size:12px;
  line-height:1.7;
  color:var(--muted);
  margin-top:14px;
}

/* ============================================================
   按钮
   ============================================================ */
.at-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
             background var(--dur) var(--ease),border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.at-btn:hover{ text-decoration:none; }
.at-btn--primary{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  color:#04211D;
  box-shadow:0 8px 24px rgba(31,224,192,.28),inset 0 0 0 1px rgba(255,255,255,.22);
}
.at-btn--primary:hover{
  color:#04211D;
  transform:translateY(-1px);
  filter:brightness(1.06);
  box-shadow:0 12px 32px rgba(31,224,192,.4),inset 0 0 0 1px rgba(255,255,255,.28);
}
.at-btn--primary:active{
  transform:translateY(0);
  box-shadow:none;
  filter:brightness(.98);
}
.at-btn--ghost{
  background:transparent;
  border-color:rgba(255,255,255,.22);
  color:var(--text);
}
.at-btn--ghost:hover{
  border-color:var(--brand);
  color:var(--brand);
  background:rgba(31,224,192,.06);
  transform:translateY(-1px);
}
.at-btn--ghost:active{ transform:translateY(0); }
.at-btn--sm{ height:42px; padding:0 18px; font-size:14px; }
.at-btn--block{ width:100%; }

.at-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.at-link:hover{ text-decoration:none; color:var(--brand); }
.at-link i{ transition:transform var(--dur) var(--ease); }
.at-link:hover i{ transform:translateX(2px); }

/* ============================================================
   首屏
   ============================================================ */
.at-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:32px 0 36px;
}
@media (min-width:640px){
  .at-hero{ padding:40px 0 48px; }
}
@media (min-width:1024px){
  .at-hero{ padding:56px 0 68px; }
}
.at-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.2;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.15));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.15));
}
.at-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(760px 340px at 84% 6%,rgba(31,224,192,.16),transparent 64%);
  pointer-events:none;
}
.at-hero > .at-container{ position:relative; z-index:2; }

.at-crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:16px;
}
.at-crumb a{ color:var(--muted); }
.at-crumb a:hover{ color:var(--brand); }
.at-crumb__sep{ color:rgba(255,255,255,.2); }
.at-crumb__current{ color:var(--text); }

.at-hero__title{
  font-size:clamp(28px,4.4vw,42px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--text);
  margin-bottom:14px;
}
.at-hero__lead{
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  max-width:660px;
  margin-bottom:24px;
}
.at-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.at-tagrow{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.at-tagrow__label{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--muted);
}
.at-tag{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.34);
  background:rgba(31,224,192,.08);
  color:#A9F3E6;
  font-size:13px;
  line-height:1;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.at-tag:hover{
  background:var(--brand);
  border-color:var(--brand);
  color:#04211D;
  text-decoration:none;
  transform:translateY(-1px);
}

/* ============================================================
   板块
   ============================================================ */
.at-section{ padding:48px 0; position:relative; }
@media (min-width:640px){
  .at-section{ padding:56px 0; }
}
@media (min-width:1024px){
  .at-section{ padding:88px 0; }
}
.at-section--tight{ padding:36px 0 0; }
@media (min-width:1024px){
  .at-section--tight{ padding:52px 0 0; }
}
.at-section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
  margin-bottom:24px;
}
.at-section__title{
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.at-section__lead{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:680px;
  margin-top:8px;
}

/* ============================================================
   左侧锚点 + 右侧条目
   ============================================================ */
.at-aside{ margin-bottom:24px; }
@media (min-width:1024px){
  .at-aside{
    margin-bottom:0;
    position:sticky;
    top:calc(var(--nav-h) + 28px);
    align-self:flex-start;
  }
}
.at-anchor__title{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--muted);
  margin-bottom:12px;
}
.at-anchor__nav{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding-bottom:8px;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.at-anchor__nav::-webkit-scrollbar{ display:none; }
.at-anchor__link{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--muted);
  font-size:14px;
  white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.at-anchor__link:hover{
  color:var(--text);
  border-color:rgba(31,224,192,.45);
  text-decoration:none;
}
.at-anchor__link.is-active{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-color:transparent;
  color:#04211D;
  font-weight:600;
}
@media (min-width:1024px){
  .at-anchor__nav{
    flex-direction:column;
    gap:2px;
    overflow:visible;
    padding-bottom:0;
    border-left:1px solid var(--line);
  }
  .at-anchor__link{
    height:44px;
    padding:0 14px;
    border:0;
    border-left:2px solid transparent;
    border-radius:0 10px 10px 0;
    background:transparent;
  }
  .at-anchor__link:hover{
    background:rgba(255,255,255,.05);
    border-left-color:rgba(31,224,192,.4);
  }
  .at-anchor__link.is-active{
    background:rgba(31,224,192,.1);
    color:var(--brand);
    border-left-color:var(--brand);
    box-shadow:none;
  }
}
.at-anchor__note{
  margin-top:20px;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
}
@media (max-width:1023px){
  .at-anchor__note{ display:none; }
}

.at-group{
  padding-bottom:36px;
  margin-bottom:36px;
  border-bottom:1px solid var(--line);
}
.at-group:last-child{
  padding-bottom:0;
  margin-bottom:0;
  border-bottom:0;
}
.at-group__head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.at-group__num{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--brand);
  padding:4px 10px;
  border-radius:var(--r-pill);
  border:1px solid rgba(31,224,192,.3);
  background:rgba(31,224,192,.08);
}
.at-group h2{
  font-size:clamp(21px,2.6vw,28px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
}
.at-group__lead{
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
  max-width:720px;
  margin-bottom:18px;
}

.at-entries{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.at-entry{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:18px 20px;
  border-radius:14px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.at-entry:hover{
  transform:translateY(-2px);
  border-color:rgba(31,224,192,.45);
  box-shadow:var(--sh-2);
}
.at-entry__idx{
  flex:0 0 30px;
  height:30px;
  display:grid;
  place-items:center;
  border-radius:9px;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--brand);
  background:rgba(31,224,192,.08);
  border:1px solid rgba(31,224,192,.28);
}
.at-entry__body{
  flex:1 1 auto;
  min-width:0;
}
.at-entry__title{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:4px;
}
.at-entry__title a{ color:var(--text); }
.at-entry__title a:hover{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
}
.at-entry__desc{
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}
.at-entry__more{
  display:none;
  flex:0 0 auto;
  align-self:center;
  font-size:13px;
  color:var(--muted);
  align-items:center;
  gap:6px;
}
@media (min-width:640px){
  .at-entry__more{ display:inline-flex; }
}

/* ============================================================
   图文区块
   ============================================================ */
.at-figure{
  margin:0;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--bg-1);
}
.at-figure img{
  width:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  transition:transform 240ms var(--ease);
}
.at-figure:hover img{ transform:scale(1.03); }
.at-media__text h2{
  font-size:clamp(21px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:12px;
}
.at-media__text p{
  font-size:15px;
  line-height:1.85;
  color:var(--body);
  margin-bottom:14px;
}
.at-checklist{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin:16px 0 20px;
}
.at-checklist li{
  position:relative;
  padding-left:24px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--body);
}
.at-checklist li::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  width:10px;
  height:10px;
  border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}

/* ============================================================
   FAQ
   ============================================================ */
.at-faq.accordion{
  background:transparent;
  border:0;
  margin:0;
  padding:0;
}
.at-faq .accordion-item{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-faq .accordion-item:hover{ border-color:rgba(255,255,255,.16); }
.at-faq .accordion-item.is-active{
  border-color:rgba(31,224,192,.42);
  box-shadow:var(--sh-1);
}
.at-faq .accordion-item.is-active::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--brand);
  box-shadow:0 0 14px rgba(31,224,192,.7);
}
.at-faq .accordion-title{
  border:0;
  display:block;
  padding:20px 56px 20px 22px;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  background:transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.at-faq .accordion-title:hover,
.at-faq .accordion-title:focus{
  background:rgba(31,224,192,.05);
  color:var(--brand);
  text-decoration:none;
}
.at-faq .accordion-title::before{
  content:"";
  position:absolute;
  right:24px;
  top:50%;
  width:9px;
  height:9px;
  margin:0;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);
  transition:transform var(--dur) var(--ease);
  background:none;
  font-size:0;
  line-height:0;
}
.at-faq .accordion-item.is-active .accordion-title::before{
  transform:translateY(-30%) rotate(-135deg);
}
.at-faq .accordion-content{
  display:block;
  max-height:0;
  overflow:hidden;
  padding:0 22px;
  border:0;
  background:transparent;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  transition:max-height 260ms var(--ease),padding var(--dur) var(--ease);
}
.at-faq .accordion-content.is-active{
  max-height:640px;
  padding:0 22px 22px;
}
.at-faq .accordion-content p{ color:var(--muted); }
.no-js .at-faq .accordion-content{
  max-height:none;
  padding:0 22px 22px;
}

/* ============================================================
   CTA 带
   ============================================================ */
.at-ctaband{
  display:flex;
  flex-direction:column;
  gap:24px;
  padding:28px 22px;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(31,224,192,.1),rgba(55,182,255,.05) 52%,rgba(255,255,255,.02));
  box-shadow:var(--sh-1);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
@media (min-width:1024px){
  .at-ctaband{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:40px;
    padding:40px 48px;
  }
}
.at-ctaband__text h2{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:8px;
}
.at-ctaband__text p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:560px;
}
.at-ctaband__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  flex:0 0 auto;
}

/* ============================================================
   页脚
   ============================================================ */
.at-footer{
  margin-top:48px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,32,.7),rgba(5,8,15,.96));
  padding:44px 0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1024px){
  .at-footer{ margin-top:88px; padding:64px 0 28px; }
}
.at-footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:8px;
}
@media (min-width:768px){
  .at-footer__grid{
    grid-template-columns:1.5fr 1fr 1fr 1.3fr;
    gap:28px;
    align-items:start;
  }
}
.at-footer__col{ min-width:0; }
.at-footer__col > summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  min-height:48px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.at-footer__col > summary::-webkit-details-marker{ display:none; }
.at-footer__col > summary::after{
  content:"+";
  color:var(--brand);
  font-size:16px;
  font-weight:400;
}
.at-footer__col[open] > summary::after{ content:"–"; }
@media (min-width:768px){
  .at-footer__col > summary{
    min-height:0;
    padding-bottom:14px;
    pointer-events:none;
    border-bottom:1px solid var(--line);
  }
  .at-footer__col > summary::after{ display:none; }
}
.at-footer__brand .at-logo{ margin-bottom:14px; }
.at-footer__desc{
  font-size:13.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:420px;
}
.at-footer__links{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:16px 0 1px;
}
@media (min-width:768px){
  .at-footer__links{ padding:16px 0 0; }
}
.at-footer__links a{
  font-size:14px;
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  min-height:28px;
}
.at-footer__links a:hover{ color:var(--brand); }
.at-footer__form{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:16px 0 0;
}
.at-input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.at-input::placeholder{ color:rgba(148,163,184,.85); }
.at-input:focus{
  outline:none;
  border-color:rgba(31,224,192,.6);
  box-shadow:0 0 0 3px rgba(31,224,192,.14);
}
.at-footer__tip{
  font-size:12px;
  line-height:1.75;
  color:var(--muted);
  padding-top:10px;
}
.at-footer__line{
  height:1px;
  background:var(--line);
  margin:28px 0 18px;
}
.at-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--muted);
}

/* ============================================================
   动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .at-entry:hover,
  .at-btn--primary:hover,
  .at-btn--ghost:hover,
  .at-iconbtn:hover,
  .at-tag:hover{ transform:none; }
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.055);
  --brand:#1FE0C0;
  --brand-2:#37B6FF;
  --accent:#FF6A2B;
  --text:#E9EFF8;
  --body-text:#C9D5E4;
  --muted:#94A3B8;
  --ok:#2BD48B;
  --warn:#FFB020;
  --err:#FF5C7A;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(0,0,0,.35);
  --sh-hover:0 16px 44px rgba(0,0,0,.45);
  --font-mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.at-no-scroll{overflow:hidden}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 80px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 80px);
  opacity:.6;
}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(28px,4vw,48px);line-height:1.22;font-weight:700}
h2{font-size:clamp(22px,2.4vw,32px)}
h3{font-size:clamp(18px,1.4vw,20px);font-weight:600;line-height:1.5}
p{margin:0 0 16px;color:var(--body-text);line-height:1.85}
p:last-child{margin-bottom:0}
a{color:var(--text);text-decoration:none;transition:color var(--t) var(--ease),border-color var(--t) var(--ease),opacity var(--t) var(--ease)}
a:hover{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
a:active{opacity:.86}
a:visited{color:var(--text)}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer;line-height:1.4}
input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:rgba(31,224,192,.28);color:var(--text)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.at-container{width:100%;max-width:1140px;margin:0 auto;padding-left:16px;padding-right:16px;position:relative}
.at-container--wide{max-width:1240px}
@media screen and (min-width:640px){.at-container{padding-left:24px;padding-right:24px}}
@media screen and (min-width:1024px){.at-container{padding-left:32px;padding-right:32px}}
@media screen and (min-width:1440px){.at-container{max-width:1180px}.at-container--wide{max-width:1240px}}

.at-section{padding:56px 0;position:relative;z-index:1}
@media screen and (min-width:640px){.at-section{padding:72px 0}}
@media screen and (min-width:1024px){.at-section{padding:96px 0}}
.at-section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.at-sec-head{max-width:760px;margin-bottom:32px}
.at-sec-head h2{margin-bottom:10px}
.at-sec-sub{color:var(--muted);font-size:15px;margin:0;line-height:1.8}

/* ---------- 顶部命令栏 ---------- */
.at-header{
  position:sticky;top:0;z-index:80;
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),backdrop-filter var(--t) var(--ease);
}
.at-header.is-scrolled{
  background:rgba(5,8,15,.78);
  border-bottom-color:var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.at-navbar{display:flex;align-items:center;gap:16px;height:64px}
.at-logo{display:inline-flex;flex-direction:column;justify-content:center;line-height:1.1;flex:0 0 auto}
.at-logo:hover{text-decoration:none;color:var(--text)}
.at-logo__main{font-size:17px;font-weight:700;letter-spacing:.01em}
.at-logo__sub{font-size:11px;color:var(--brand);letter-spacing:.22em}
.at-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.at-nav__link{position:relative;padding:9px 13px;font-size:14.5px;color:var(--body-text);border-radius:8px;white-space:nowrap}
.at-nav__link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none}
.at-nav__link.is-active{color:var(--text)}
.at-nav__link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,224,192,.7);
}
.at-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.at-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:260px;height:38px;padding:0 10px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--glass);
  transition:width var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.at-search:focus-within{width:360px;border-color:rgba(31,224,192,.55);box-shadow:0 0 0 3px rgba(31,224,192,.14)}
.at-search i{color:var(--muted);font-size:13px}
input.at-search__input{
  flex:1 1 auto;min-width:0;height:100%;padding:0;border:0;background:transparent;
  color:var(--text);font-size:14px;box-shadow:none;
}
input.at-search__input:focus{outline:none;box-shadow:none}
input.at-search__input::placeholder{color:#6B7A8F}
.at-search__kbd{font-family:var(--font-mono);font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.6}
.at-iconbtn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--glass);color:var(--body-text);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.at-iconbtn:hover{border-color:rgba(31,224,192,.5);color:var(--brand);text-decoration:none;transform:translateY(-1px)}
.at-burger{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--glass);
}
.at-burger span{display:block;width:16px;height:2px;background:var(--text);border-radius:2px}

/* ---------- 按钮 ---------- */
.at-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),filter var(--t) var(--ease),color var(--t) var(--ease);
}
.at-btn:hover{text-decoration:none}
.at-btn--sm{height:38px;padding:0 18px;font-size:14px}
.at-btn--primary{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  color:#04121A;
  box-shadow:0 8px 24px rgba(31,224,192,.28),inset 0 0 0 1px rgba(255,255,255,.24);
}
.at-btn--primary:hover{color:#04121A;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(31,224,192,.38),inset 0 0 0 1px rgba(255,255,255,.3)}
.at-btn--primary:active{transform:translateY(0);box-shadow:none}
.at-btn--ghost{background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--text)}
.at-btn--ghost:hover{border-color:var(--brand);color:var(--brand);text-decoration:none;transform:translateY(-1px)}
.at-btn--ghost:active{transform:translateY(0)}
.at-btn--block{width:100%}
.at-link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600}
.at-link-more i{transition:transform var(--t) var(--ease);font-size:12px}
.at-link-more:hover{text-decoration:none;color:var(--brand);filter:brightness(1.08)}
.at-link-more:hover i{transform:translateX(2px)}

/* ---------- 徽章与面包屑 ---------- */
.at-badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  font-size:12px;line-height:1;border-radius:var(--r-pill);
  color:var(--brand);border:1px solid rgba(31,224,192,.4);background:rgba(31,224,192,.08);
  letter-spacing:.02em;
}
.at-badge--accent{color:var(--accent);border-color:rgba(255,106,43,.42);background:rgba(255,106,43,.1)}
.at-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.at-crumbs a{color:var(--muted)}
.at-crumbs a:hover{color:var(--brand);text-decoration:none}
.at-crumbs__sep{opacity:.5}
.at-crumbs__current{color:var(--body-text)}

/* ---------- Hero：通栏场景图 ---------- */
.at-hero--scene{
  position:relative;display:flex;align-items:flex-end;overflow:hidden;
  min-height:460px;padding:112px 0 56px;border-bottom:1px solid var(--line);
}
@media screen and (min-width:640px){.at-hero--scene{min-height:520px;padding:132px 0 68px}}
@media screen and (min-width:1024px){.at-hero--scene{min-height:620px;padding:160px 0 80px}}
.at-hero__media{position:absolute;inset:0;z-index:0}
.at-hero__media img{width:100%;height:100%;object-fit:cover;opacity:.52}
.at-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.78) 0%,rgba(5,8,15,.55) 42%,rgba(5,8,15,.95) 100%);
}
.at-hero__glow{
  position:absolute;z-index:1;left:-8%;top:-24%;width:640px;height:640px;pointer-events:none;
  background:radial-gradient(circle,rgba(31,224,192,.22),transparent 62%);
}
.at-hero__inner{position:relative;z-index:2;width:100%}
.at-hero__content{max-width:820px}
.at-hero__content h1{margin:16px 0 14px}
.at-hero__sub{font-size:15.5px;color:var(--body-text);max-width:620px;margin-bottom:28px;line-height:1.8}
.at-hero__cta{display:flex;flex-wrap:wrap;gap:12px}
.at-hero__meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:13px;color:var(--muted)}
.at-hero__meta span{display:inline-flex;align-items:center;gap:6px}
.at-hero__meta i{color:var(--brand);font-size:12px}

/* ---------- 数字背书条 ---------- */
.at-stats{background:var(--bg-1);border-bottom:1px solid var(--line);padding:24px 0;position:relative;z-index:1}
.at-stat{position:relative;padding:14px 8px 14px 20px}
.at-stat::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:1px;background:var(--line)}
.at-stat__num{display:block;font-family:var(--font-mono);font-size:clamp(22px,2.4vw,32px);font-weight:700;color:var(--brand);letter-spacing:0;line-height:1.2}
.at-stat__label{display:block;margin-top:6px;font-size:12.5px;color:var(--muted);line-height:1.6}

/* ---------- 场景说明双栏 ---------- */
.at-scene{
  height:100%;padding:24px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
  margin-bottom:24px;
}
.at-scene:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.45);box-shadow:var(--sh-hover)}
.at-scene__media{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:16/9;margin-bottom:20px;border:1px solid var(--line)}
.at-scene__media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease)}
.at-scene:hover .at-scene__media img{transform:scale(1.04)}
.at-scene__media .at-badge{position:absolute;left:12px;top:12px;background:rgba(5,8,15,.72);backdrop-filter:blur(8px)}
.at-scene h3{margin-bottom:12px}
.at-scene p{font-size:15px;margin-bottom:12px}
.at-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:10px}
.at-list li{position:relative;padding-left:18px;font-size:14px;color:var(--body-text);line-height:1.75}
.at-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1px;
  background:var(--brand);transform:rotate(45deg);
}
.at-list--accent li::before{background:var(--accent)}

/* ---------- 案例卡 ---------- */
.at-case{
  position:relative;height:100%;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.at-case:hover{transform:translateY(-4px);border-color:rgba(31,224,192,.45);box-shadow:var(--sh-hover)}
.at-case--lead{display:flex;flex-direction:column}
.at-case--lead .at-case__thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.at-case__thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease)}
.at-case:hover .at-case__thumb img{transform:scale(1.04)}
.at-case__body{padding:24px}
.at-case--lead .at-case__body{padding:26px 26px 28px}
.at-case__body h3{margin:14px 0 10px}
.at-case__body p{font-size:14.5px;color:var(--body-text);margin-bottom:14px}
.at-case--mini{display:flex;align-items:stretch;min-height:172px}
.at-case--mini .at-case__thumb{flex:0 0 128px;overflow:hidden}
.at-case--mini .at-case__body{padding:18px 20px}
.at-case--mini .at-case__body h3{margin:10px 0 8px;font-size:17px}
.at-case--mini .at-case__body p{font-size:13.5px;margin-bottom:0;line-height:1.7}
@media screen and (max-width:639px){
  .at-case--mini{flex-direction:column}
  .at-case--mini .at-case__thumb{flex:none;aspect-ratio:16/9}
}

/* ---------- FAQ accordion ---------- */
.at-faq .accordion{margin:0;background:transparent;border:0}
.at-faq .accordion-item{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.at-faq .accordion-item:hover{border-color:rgba(31,224,192,.35)}
.at-faq .accordion-item.is-active{border-color:rgba(31,224,192,.45);box-shadow:inset 3px 0 0 var(--brand)}
.at-faq .accordion-title{
  position:relative;display:block;padding:18px 54px 18px 20px;
  background:transparent;border:0;color:var(--text);font-size:16px;font-weight:600;line-height:1.6;
}
.at-faq .accordion-title:hover{background:rgba(255,255,255,.04);color:var(--brand);text-decoration:none}
.at-faq .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:12px;color:var(--brand);transition:transform var(--t) var(--ease);
}
.at-faq .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg)}
.at-faq .accordion-content{padding:0 20px 20px;background:transparent;border:0;color:var(--muted);font-size:15px;line-height:1.85}
.at-faq .accordion-content p{color:var(--muted);font-size:15px}

/* ---------- CTA 与表单 ---------- */
.at-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 32px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(90deg,rgba(31,224,192,.10),rgba(55,182,255,.06) 58%,rgba(255,255,255,.02));
  box-shadow:var(--sh-card);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.at-cta__text{flex:1 1 320px;min-width:0}
.at-cta__text h2{margin-bottom:8px}
.at-cta__text p{margin:0;font-size:14.5px;color:var(--body-text)}
.at-cta__form{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.at-fineprint{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.7}
.at-contact{
  margin-top:24px;padding:32px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.at-contact__intro h3{margin-bottom:12px}
.at-contact__intro p{font-size:14.5px;color:var(--body-text)}
.at-contact__points{margin-top:18px}
.at-field{margin-bottom:18px}
.at-field label{display:block;margin-bottom:8px;font-size:13.5px;font-weight:600;color:var(--body-text)}
.at-field__hint{display:block;margin-top:6px;font-size:12px;color:var(--muted)}
input.at-input,textarea.at-input{
  width:100%;padding:13px 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text);font-size:15px;line-height:1.6;box-shadow:none;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
input.at-input:focus,textarea.at-input:focus{
  outline:none;border-color:rgba(31,224,192,.6);box-shadow:0 0 0 3px rgba(31,224,192,.14);background:rgba(255,255,255,.06);
}
input.at-input::placeholder,textarea.at-input::placeholder{color:#6B7A8F}
textarea.at-input{min-height:120px;resize:vertical}
input.at-input.is-error,textarea.at-input.is-error{border-color:var(--err);box-shadow:0 0 0 3px rgba(255,92,122,.14)}
.at-input--inline{max-width:280px}
@media screen and (max-width:639px){.at-input--inline{max-width:none;width:100%}}

/* ---------- 页脚 ---------- */
.at-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:56px 0 26px;position:relative;z-index:1}
.at-footer__grid{display:grid;grid-template-columns:1fr;gap:28px}
@media screen and (min-width:640px){.at-footer__grid{grid-template-columns:1fr 1fr;gap:32px}}
@media screen and (min-width:1024px){.at-footer__grid{grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:36px}}
.at-footer__col{min-width:0}
.at-footer__col summary{
  list-style:none;cursor:pointer;font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px;
  display:flex;align-items:center;justify-content:space-between;min-height:32px;
}
.at-footer__col summary::-webkit-details-marker{display:none}
.at-footer__col summary::after{content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--muted)}
.at-footer__col[open] summary::after{content:"\f106"}
.at-footer__brand .at-logo{margin-bottom:14px}
.at-footer__desc{font-size:14px;color:var(--muted);max-width:360px;line-height:1.8;margin:0}
.at-footer__links{display:flex;flex-direction:column;gap:10px}
.at-footer__links a{color:var(--muted);font-size:14px;line-height:1.6}
.at-footer__links a:hover{color:var(--brand);text-decoration:none}
.at-footer__form{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.at-footer__form input.at-input{flex:1 1 160px;min-width:0}
.at-footer__form .at-btn{flex:0 0 auto}
.at-footer__tip{font-size:12.5px;color:var(--muted);margin:0;line-height:1.75}
.at-footer__line{height:1px;background:var(--line);margin:32px 0 0}
.at-footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:20px;font-size:12.5px;color:var(--muted);
}

/* ---------- 移动端抽屉 ---------- */
.at-drawer{
  position:fixed;inset:0;z-index:120;opacity:0;pointer-events:none;
  transition:opacity var(--t) var(--ease);
}
.at-drawer.is-open{opacity:1;pointer-events:auto}
.at-drawer__mask{position:absolute;inset:0;width:100%;height:100%;background:rgba(3,6,12,.68);backdrop-filter:blur(3px)}
.at-drawer__panel{
  position:absolute;top:0;right:0;width:min(86vw,340px);height:100%;
  padding:20px;overflow-y:auto;
  background:linear-gradient(180deg,var(--bg-2),var(--bg-1));
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform 240ms var(--ease);
}
.at-drawer.is-open .at-drawer__panel{transform:translateX(0)}
.at-drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.at-drawer__close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--glass);color:var(--body-text);display:inline-flex;align-items:center;justify-content:center;
}
.at-drawer__close:hover{color:var(--brand);border-color:rgba(31,224,192,.5)}
.at-drawer__search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--glass);margin-bottom:18px}
.at-drawer__search i{color:var(--muted);font-size:13px}
input.at-drawer__input{flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;color:var(--text);font-size:14px;box-shadow:none}
input.at-drawer__input:focus{outline:none;box-shadow:none}
.at-drawer__nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.at-drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;
  color:var(--body-text);border:1px solid transparent;font-size:15px;
}
.at-drawer__link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none}
.at-drawer__link.is-active{color:var(--brand);border-color:rgba(31,224,192,.35);background:rgba(31,224,192,.07)}
.at-drawer__link i{font-size:12px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .at-navbar{height:56px}
  .at-nav{display:none}
  .at-search{display:none}
  .at-iconbtn{display:none}
  .at-actions .at-btn{display:none}
  .at-burger{display:inline-flex}
}
@media screen and (min-width:1024px){
  .at-burger{display:none}
  .at-drawer{display:none}
}
@media screen and (max-width:639px){
  .at-hero__cta .at-btn{width:100%}
  .at-cta{padding:24px 20px}
  .at-cta__form{width:100%}
  .at-cta__form .at-btn{width:100%}
  .at-contact{padding:22px}
  .at-scene,.at-case__body{padding:20px}
  .at-footer{padding-top:40px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .at-scene:hover,.at-case:hover,.at-iconbtn:hover,.at-btn:hover{transform:none !important}
}