/* ============================================================
   AI知声社区官网 · Dark Avant-garde Tech
   配色取自「AI知声」品牌视觉：墨黑 / 焰橙 / 电蓝
   ============================================================ */

:root{
  --bg:        #07070b;
  --bg-soft:   #0d0d15;
  --bg-card:   rgba(255,255,255,.04);
  --line:      rgba(255,255,255,.09);
  --line-soft: rgba(255,255,255,.06);
  --text:      #f4f5f9;
  --text-2:    #a7adc0;
  --text-3:    #6b7186;
  --orange:    #ff5a1f;
  --orange-2:  #ff8a3d;
  --blue:      #2f6bff;
  --cyan:      #22d3ee;
  --magenta:   #ff2d78;
  --grad-flame:linear-gradient(100deg,#ff8a3d 0%,#ff5a1f 45%,#ff2d78 100%);
  --grad-ice:  linear-gradient(100deg,#22d3ee 0%,#2f6bff 60%,#7c5cff 100%);
  --grad-mix:  linear-gradient(100deg,#22d3ee 0%,#7c5cff 38%,#ff5a1f 78%,#ff2d78 100%);
  --shadow:    0 24px 70px -24px rgba(0,0,0,.75);
  --ease:      cubic-bezier(.22,.9,.3,1);
  --font-d:    "SF Pro Display","Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-b:    -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-b);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.lock{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(255,90,31,.35);color:#fff}

.container{max-width:1200px;margin:0 auto;padding:0 28px;width:100%}

/* ---------- 噪点颗粒 ---------- */
.grain{
  position:fixed;inset:-100%;z-index:9990;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 7s steps(8) infinite;
}
@keyframes grain{
  0%,100%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}
  40%{transform:translate(2%,-3%)}60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,3%)}
}

/* ============================================================
   导航
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  transition:background .4s var(--ease),border-color .4s,backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(7,7,11,.72);
  backdrop-filter:blur(18px) saturate(1.4);
  -webkit-backdrop-filter:blur(18px) saturate(1.4);
  border-bottom-color:var(--line-soft);
}
.nav__inner{
  max-width:1280px;margin:0 auto;padding:18px 28px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav__logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.nav__logo-mark{color:var(--orange);display:grid;place-items:center;filter:drop-shadow(0 0 14px rgba(255,90,31,.45))}
.nav__logo-text{font-family:var(--font-d);font-weight:700;font-size:19px;letter-spacing:.02em;display:flex;align-items:baseline;gap:8px}
.nav__logo-text em{font-style:normal;font-size:10px;letter-spacing:.28em;color:var(--text-3);font-weight:500}
.nav__menu{display:flex;align-items:center;gap:30px}
.nav__menu a{
  font-size:14.5px;color:var(--text-2);position:relative;transition:color .3s;
  padding:4px 0;font-weight:500;
}
.nav__menu a:not(.nav__cta)::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad-flame);transition:width .35s var(--ease);
}
.nav__menu a:not(.nav__cta):hover{color:var(--text)}
.nav__menu a:not(.nav__cta):hover::after{width:100%}
.nav__cta{
  padding:10px 22px;border-radius:100px;color:#fff !important;font-weight:600 !important;
  background:var(--grad-flame);box-shadow:0 8px 26px -8px rgba(255,90,31,.65);
  transition:transform .3s var(--ease),box-shadow .3s;
}
.nav__cta:hover{transform:translateY(-2px);box-shadow:0 14px 34px -8px rgba(255,90,31,.75)}
.nav__burger{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center}
.nav__burger span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s var(--ease)}
.nav__burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__burger.is-open span:nth-child(2){opacity:0}
.nav__burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding:150px 0 90px;overflow:hidden;
}
.hero__wave{position:absolute;inset:0;width:100%;height:100%;opacity:.5}
.hero__glow{
  position:absolute;top:-20%;right:-12%;width:70vw;height:70vw;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.16) 0%,rgba(124,92,255,.10) 38%,transparent 65%);
  filter:blur(30px);pointer-events:none;
}
.hero__glow::after{
  content:"";position:absolute;left:-60%;top:30%;width:80%;height:80%;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.12),transparent 65%);
}
.hero__inner{position:relative;z-index:2}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-d);font-size:12.5px;letter-spacing:.22em;color:var(--text-2);
  border:1px solid var(--line);border-radius:100px;padding:8px 18px;
  background:rgba(255,255,255,.03);backdrop-filter:blur(8px);margin-bottom:34px;
}
.hero__eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--orange);box-shadow:0 0 12px var(--orange);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.75)}}

.hero__title{
  font-family:var(--font-d);font-weight:700;
  font-size:clamp(46px,7.6vw,104px);line-height:1.08;letter-spacing:-.01em;
  margin-bottom:30px;
}
.hero__title span{display:block}
.hero__title i{
  font-style:normal;background:var(--grad-flame);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__title em{
  font-style:normal;position:relative;color:var(--text);
}
.hero__title em::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.14em;z-index:-1;
  background:linear-gradient(90deg,rgba(255,90,31,.55),rgba(255,45,120,.15));
  border-radius:4px;
}
.hero__sub{max-width:680px;color:var(--text-2);font-size:clamp(15.5px,1.4vw,18px);margin-bottom:42px}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:74px}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:16px 34px;border-radius:100px;font-weight:600;font-size:15.5px;
  transition:transform .35s var(--ease),box-shadow .35s,background .35s,border-color .35s;
  will-change:transform;
}
.btn--primary{background:var(--grad-flame);color:#fff;box-shadow:0 14px 40px -12px rgba(255,90,31,.7)}
.btn--primary:hover{box-shadow:0 20px 52px -12px rgba(255,90,31,.85)}
.btn__arrow{transition:transform .35s var(--ease);font-style:normal}
.btn--primary:hover .btn__arrow{transform:translateX(5px)}
.btn--ghost{border:1px solid var(--line);color:var(--text);background:rgba(255,255,255,.03);backdrop-filter:blur(8px)}
.btn--ghost:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.07)}

.hero__stats{display:flex;gap:clamp(36px,6vw,90px);flex-wrap:wrap}
.stat__num{
  font-family:var(--font-d);font-weight:700;font-size:clamp(40px,5vw,62px);line-height:1;
  display:flex;align-items:baseline;
}
.stat__num i{font-style:normal;background:var(--grad-flame);-webkit-background-clip:text;background-clip:text;color:transparent;margin-left:2px}
.stat__label{margin-top:12px;font-size:13.5px;color:var(--text-3);line-height:1.6}
.stat__label em{font-family:var(--font-d);font-style:normal;font-size:10px;letter-spacing:.16em;color:var(--text-3);opacity:.75}

.hero__eq{position:absolute;left:28px;bottom:38px;display:flex;gap:4px;align-items:flex-end;height:26px;z-index:2;opacity:.55}
.hero__eq span{width:3px;border-radius:2px;background:var(--grad-flame);animation:eq 1.3s ease-in-out infinite}
.hero__eq span:nth-child(1){height:40%;animation-delay:0s}
.hero__eq span:nth-child(2){height:80%;animation-delay:.15s}
.hero__eq span:nth-child(3){height:55%;animation-delay:.3s}
.hero__eq span:nth-child(4){height:100%;animation-delay:.45s}
.hero__eq span:nth-child(5){height:65%;animation-delay:.6s}
.hero__eq span:nth-child(6){height:90%;animation-delay:.75s}
.hero__eq span:nth-child(7){height:45%;animation-delay:.9s}
@keyframes eq{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}

.hero__scroll{
  position:absolute;right:28px;bottom:34px;z-index:2;
  font-family:var(--font-d);font-size:10px;letter-spacing:.3em;color:var(--text-3);
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.hero__scroll span{width:1px;height:52px;background:linear-gradient(var(--orange),transparent);animation:scrollLine 2s var(--ease) infinite;transform-origin:top}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   跑马灯
   ============================================================ */
.marquee{
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  padding:22px 0;overflow:hidden;background:var(--bg-soft);
}
.marquee__track{display:flex;width:max-content;animation:marquee 30s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__group{display:flex;align-items:center;gap:44px;padding-right:44px;white-space:nowrap}
.marquee__group span{
  font-family:var(--font-d);font-size:clamp(17px,2vw,24px);font-weight:600;
  letter-spacing:.04em;color:var(--text-2);transition:color .3s;
}
.marquee__group span:hover{color:var(--text)}
.marquee__group i{font-style:normal;color:var(--orange);font-size:14px}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============================================================
   通用 Section
   ============================================================ */
.section{padding:130px 0;position:relative}
.section--alt{background:
  radial-gradient(900px 500px at 85% -5%,rgba(47,107,255,.08),transparent 60%),
  radial-gradient(800px 500px at 5% 100%,rgba(255,90,31,.06),transparent 60%),
  var(--bg-soft);
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
.section__head{margin-bottom:64px;max-width:820px}
.section__tag{
  font-family:var(--font-d);font-size:12px;letter-spacing:.3em;color:var(--orange);
  margin-bottom:20px;font-weight:600;
}
.section__title{
  font-family:var(--font-d);font-weight:700;font-size:clamp(32px,4.6vw,56px);
  line-height:1.18;letter-spacing:-.01em;
}
.section__title em{
  display:block;font-style:normal;margin-top:6px;
  background:var(--grad-mix);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.section__lead{margin-top:22px;color:var(--text-2);max-width:660px;font-size:16.5px}

/* ============================================================
   Bento 社区实力
   ============================================================ */
.bento{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:18px;
}
.bento__card{
  position:relative;overflow:hidden;border-radius:22px;padding:34px 30px;
  background:var(--bg-card);border:1px solid var(--line);
  backdrop-filter:blur(10px);min-height:230px;
  display:flex;flex-direction:column;
  transition:transform .45s var(--ease),border-color .45s,background .45s;
}
.bento__card--lg{grid-column:span 2}
.bento__card--wide{grid-column:span 2}
.bento__card:hover{
  transform:translateY(-6px);
  border-color:rgba(255,138,61,.4);
  background:rgba(255,255,255,.055);
}
.bento__card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .45s;
  background:radial-gradient(420px 200px at var(--mx,50%) var(--my,0%),rgba(255,90,31,.13),transparent 70%);
}
.bento__card:hover::before{opacity:1}
.bento__icon{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;margin-bottom:22px;
  background:linear-gradient(135deg,rgba(255,90,31,.18),rgba(47,107,255,.14));
  border:1px solid var(--line);color:var(--orange-2);
}
.bento__icon svg{width:24px;height:24px}
.bento__card h3{font-family:var(--font-d);font-size:21px;margin-bottom:12px;font-weight:700}
.bento__card p{color:var(--text-2);font-size:15px;max-width:46ch}
.bento__card b{color:var(--text);font-weight:700}
.bento__index{
  position:absolute;right:22px;bottom:12px;font-family:var(--font-d);
  font-size:64px;font-weight:700;color:rgba(255,255,255,.05);line-height:1;
}

/* 照片墙 */
.photowall{
  display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:190px;gap:18px;margin-top:18px;
}
.photo{
  position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line);
  background:var(--bg-card);
}
.photo img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease),filter .6s;filter:saturate(.92)}
.photo:hover img{transform:scale(1.06);filter:saturate(1.1)}
.photo figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:42px 18px 14px;font-size:14px;font-weight:600;
  background:linear-gradient(transparent,rgba(7,7,11,.88));color:#fff;
  transform:translateY(4px);transition:transform .4s var(--ease);
}
.photo:hover figcaption{transform:translateY(0)}
.photo figcaption em{display:block;font-family:var(--font-d);font-style:normal;font-size:10px;letter-spacing:.2em;color:var(--orange-2);margin-top:2px}
.photo--a{grid-column:span 6;grid-row:span 2}
.photo--b{grid-column:span 6}
.photo--c{grid-column:span 3}
.photo--d{grid-column:span 3}
.photo--e{grid-column:span 6}

/* ============================================================
   产业洞察 Matrix
   ============================================================ */
.matrix{border:1px solid var(--line);border-radius:24px;overflow:hidden;background:rgba(255,255,255,.02)}
.matrix__cols{
  display:grid;grid-template-columns:1fr 54px 1fr 54px 1.2fr;
  padding:20px 28px;background:rgba(255,255,255,.035);
  font-family:var(--font-d);font-size:13px;letter-spacing:.08em;color:var(--text-2);font-weight:600;
}
.matrix__cols span:last-child{color:var(--orange-2)}
.matrix__vs,.matrix__arrow{text-align:center;color:var(--text-3)}
.matrix__row{
  display:grid;grid-template-columns:1fr 54px 1fr 54px 1.2fr;
  border-top:1px solid var(--line-soft);transition:background .35s;
}
.matrix__row:hover{background:rgba(255,90,31,.045)}
.matrix__cell{padding:26px 28px;font-size:15px;color:var(--text-2);display:flex;align-items:center}
.matrix__cell b{color:var(--text);font-weight:700}
.matrix__cell--hit{
  color:var(--text);position:relative;
  background:linear-gradient(135deg,rgba(255,90,31,.1),rgba(255,45,120,.05));
}
.matrix__cell--hit::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-flame)}
.matrix__vs,.matrix__arrow{display:grid;place-items:center;font-family:var(--font-d);font-size:18px}
.matrix__arrow{color:var(--orange)}

/* ============================================================
   品牌合作
   ============================================================ */
.coop{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.coop__card{
  position:relative;overflow:hidden;border-radius:24px;padding:40px 36px 34px;
  background:var(--bg-card);border:1px solid var(--line);min-height:300px;
  display:flex;flex-direction:column;
  transition:transform .45s var(--ease),border-color .45s;
}
.coop__card:hover{transform:translateY(-6px);border-color:rgba(255,138,61,.4)}
.coop__no{
  font-family:var(--font-d);font-size:15px;font-weight:700;letter-spacing:.12em;
  width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin-bottom:26px;
  border:1px solid var(--line);color:var(--orange-2);
  background:linear-gradient(135deg,rgba(255,90,31,.15),transparent);
}
.coop__card h3{font-family:var(--font-d);font-size:25px;margin-bottom:14px;font-weight:700}
.coop__goal{color:var(--text-2);font-size:15.5px;margin-bottom:24px;max-width:44ch}
.coop__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto}
.coop__tags span{
  font-size:13px;padding:7px 15px;border-radius:100px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
  transition:.3s var(--ease);
}
.coop__card:hover .coop__tags span{border-color:rgba(255,138,61,.35);color:var(--text)}
.coop__glow{
  position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.18),transparent 65%);
  opacity:0;transition:opacity .5s;pointer-events:none;
}
.coop__card:hover .coop__glow{opacity:1}

/* ============================================================
   专家作品
   ============================================================ */
.works{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}
.work{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--bg-card);
  transition:transform .45s var(--ease),border-color .45s,box-shadow .45s;
}
.work:hover{transform:translateY(-6px);border-color:rgba(255,255,255,.22);box-shadow:var(--shadow)}
.work__poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease);filter:saturate(.95)}
.work:hover .work__poster{transform:scale(1.05)}
.work__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,7,11,.05) 30%,rgba(7,7,11,.55) 65%,rgba(7,7,11,.92) 100%);
}
.work__meta{position:absolute;left:22px;right:22px;bottom:18px;z-index:2}
.work__author{font-family:var(--font-d);font-size:13px;letter-spacing:.14em;color:var(--orange-2);font-weight:600;text-transform:uppercase}
.work__name{font-size:19px;font-weight:700;margin-top:4px;color:#fff}
.work__play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.9);z-index:3;
  width:66px;height:66px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.55);
  backdrop-filter:blur(8px);color:#fff;opacity:0;transition:.4s var(--ease);
}
.work__play svg{width:22px;height:22px;margin-left:3px}
.work.is-playable{cursor:pointer}
.work.is-playable:hover .work__play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.work.is-playable .work__play{background:var(--grad-flame);border-color:transparent;opacity:1;transform:translate(-50%,-50%) scale(1);box-shadow:0 10px 30px -6px rgba(255,90,31,.7)}
.work__badge{
  position:absolute;top:16px;left:16px;z-index:3;
  font-family:var(--font-d);font-size:10px;letter-spacing:.18em;font-weight:600;
  padding:6px 12px;border-radius:100px;backdrop-filter:blur(8px);
}
.work__badge--live{background:rgba(255,90,31,.9);color:#fff}
.work__badge--long{background:rgba(7,7,11,.55);border:1px solid var(--line);color:var(--text-2)}

/* 无视频的排版式封面 */
.work--type{
  display:flex;flex-direction:column;justify-content:flex-end;padding:26px;
  background:
    radial-gradient(120% 90% at 100% 0%,var(--c2,rgba(47,107,255,.22)),transparent 55%),
    radial-gradient(120% 90% at 0% 100%,var(--c1,rgba(255,90,31,.2)),transparent 55%),
    #0c0c14;
}
.work--type .work__type-bg{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:.5;
}
.work--type .work__type-bg svg{width:62%;height:auto}
.work--type .work__meta{position:static;left:auto;right:auto;bottom:auto}
.work--type .work__name{color:var(--text)}
.work--type .work__author{color:var(--text-3)}

/* ============================================================
   主创视觉
   ============================================================ */
.visual-main{
  position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);margin-bottom:18px;
  background:#fff;
}
.visual-main img{width:100%;transition:transform .8s var(--ease)}
.visual-main:hover img{transform:scale(1.02)}
.visual-main figcaption{
  position:absolute;left:0;right:0;bottom:0;display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  padding:60px 28px 22px;color:#fff;
  background:linear-gradient(transparent,rgba(7,7,11,.85));
}
.visual-main figcaption b{font-family:var(--font-d);font-size:clamp(17px,2vw,24px)}
.visual-main figcaption span{font-size:13px;color:rgba(255,255,255,.75);text-align:right}

.visual-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:18px}
.visual-card{
  position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:941/1672;background:#fff;cursor:zoom-in;
  transition:transform .45s var(--ease),border-color .45s,box-shadow .45s;
}
.visual-card:hover{transform:translateY(-6px);border-color:rgba(255,138,61,.45);box-shadow:var(--shadow)}
.visual-card img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.visual-card:hover img{transform:scale(1.04)}
.visual-card__cap{
  position:absolute;left:0;right:0;bottom:0;padding:36px 14px 12px;font-size:13px;font-weight:600;color:#fff;
  background:linear-gradient(transparent,rgba(7,7,11,.8));opacity:0;transform:translateY(6px);transition:.35s var(--ease);
}
.visual-card:hover .visual-card__cap{opacity:1;transform:translateY(0)}

/* ============================================================
   CTA
   ============================================================ */
.cta-section{position:relative;padding:170px 0;text-align:center;overflow:hidden}
.cta-glow{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:900px;height:900px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(255,90,31,.13) 0%,rgba(124,92,255,.08) 35%,transparent 62%);
}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{
  font-family:var(--font-d);font-weight:700;font-size:clamp(34px,5.6vw,70px);line-height:1.2;margin-bottom:26px;
}
.cta-inner h2 em{
  font-style:normal;
  background:var(--grad-flame);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.cta-inner p{color:var(--text-2);max-width:600px;margin:0 auto 40px;font-size:16.5px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:26px !important;font-size:12.5px !important;color:var(--text-3) !important}

/* ============================================================
   页脚
   ============================================================ */
.footer{border-top:1px solid var(--line-soft);background:var(--bg-soft);padding-top:70px}
.footer__inner{display:flex;justify-content:space-between;gap:50px;padding-bottom:50px;flex-wrap:wrap}
.footer__brand{max-width:380px}
.footer__brand .nav__logo{margin-bottom:18px}
.footer__brand p{color:var(--text-3);font-size:14px}
.footer__nav{display:flex;flex-direction:column;gap:14px}
.footer__nav a{color:var(--text-2);font-size:14.5px;transition:color .3s;width:fit-content}
.footer__nav a:hover{color:var(--orange-2)}
.footer__bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:24px 28px;border-top:1px solid var(--line-soft);
  font-family:var(--font-d);font-size:11.5px;letter-spacing:.12em;color:var(--text-3);
}

/* ============================================================
   弹层 / 灯箱
   ============================================================ */
.modal,.lightbox{
  position:fixed;inset:0;z-index:9500;display:grid;place-items:center;padding:28px;
  background:rgba(4,4,8,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;
}
.modal.is-open,.lightbox.is-open{opacity:1;visibility:visible}
.modal__body{
  width:min(1000px,100%);aspect-ratio:16/9;border-radius:18px;overflow:hidden;
  background:#000;box-shadow:0 40px 120px -30px rgba(0,0,0,.9);border:1px solid var(--line);
  transform:scale(.94) translateY(14px);transition:transform .4s var(--ease);
  position:relative;
}
.modal.is-open .modal__body{transform:scale(1) translateY(0)}
.modal__body video{width:100%;height:100%;display:block}
.modal__close,.lightbox__close{
  position:absolute;top:24px;right:26px;z-index:2;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;font-size:17px;
  background:rgba(255,255,255,.08);border:1px solid var(--line);color:#fff;
  backdrop-filter:blur(8px);transition:.3s;
}
.modal__close:hover,.lightbox__close:hover{background:var(--grad-flame);border-color:transparent;transform:rotate(90deg)}
.lightbox__figure{
  max-height:88vh;display:flex;flex-direction:column;align-items:center;gap:14px;
  transform:scale(.94);transition:transform .4s var(--ease);
}
.lightbox.is-open .lightbox__figure{transform:scale(1)}
.lightbox__figure img{
  max-height:80vh;max-width:92vw;border-radius:16px;box-shadow:0 40px 120px -30px #000;
}
.lightbox__figure figcaption{color:var(--text-2);font-size:14px;text-align:center}
.lightbox__figure figcaption b{color:var(--text)}

/* ============================================================
   滚动入场
   ============================================================ */
.reveal,.reveff{
  opacity:0;transform:translateY(30px);
  transition:opacity .9s var(--ease) var(--d,0s),transform .9s var(--ease) var(--d,0s);
}
.reveff{transform:translateY(46px)}
.is-inview{opacity:1 !important;transform:none !important}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento__card--lg{grid-column:span 2}
  .bento__card--wide{grid-column:span 2}
  .photo--a{grid-column:span 7}.photo--b{grid-column:span 5}
  .photo--c{grid-column:span 4}.photo--d{grid-column:span 4}.photo--e{grid-column:span 4}
}
@media (max-width:860px){
  .nav__burger{display:flex}
  .nav__menu{
    position:fixed;top:0;right:0;height:100svh;width:min(320px,82vw);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:26px;
    padding:40px 36px;background:rgba(10,10,16,.96);backdrop-filter:blur(20px);
    border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .45s var(--ease);
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__menu a{font-size:19px}
  .nav__cta{margin-top:8px}

  .section{padding:90px 0}
  .hero{padding:130px 0 110px}
  .hero__eq,.hero__scroll{display:none}
  .matrix__cols{display:none}
  .matrix__row{grid-template-columns:1fr;gap:0;padding:20px 0}
  .matrix__vs,.matrix__arrow{transform:rotate(90deg);padding:4px 0}
  .matrix__cell{padding:8px 26px}
  .matrix__cell--hit::before{top:0;bottom:0;left:0;width:100%;height:3px}
  .coop{grid-template-columns:1fr}
  .photowall{grid-auto-rows:170px}
  .photo--a{grid-column:span 12;grid-row:span 1}
  .photo--b,.photo--c,.photo--d,.photo--e{grid-column:span 6}
  .visual-main figcaption{flex-direction:column;align-items:flex-start;gap:4px}
  .visual-main figcaption span{text-align:left}
}
@media (max-width:560px){
  .container{padding:0 20px}
  .nav__inner{padding:15px 20px}
  .hero__actions .btn{width:100%;justify-content:center}
  .hero__stats{gap:32px}
  .bento{grid-template-columns:1fr}
  .bento__card--lg,.bento__card--wide{grid-column:span 1}
  .photowall{grid-auto-rows:200px}
  .photo--a,.photo--b,.photo--c,.photo--d,.photo--e{grid-column:span 12}
  .works{grid-template-columns:1fr}
  .visual-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .footer__bottom{justify-content:center;text-align:center}
  .modal,.lightbox{padding:14px}
  .modal__close,.lightbox__close{top:14px;right:14px}
}

/* ============================================================
   减少动效偏好
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal,.reveff{opacity:1;transform:none}
}