/* ============================================================
   TJ ATLAS · 作品图鉴 — 设计系统
   白色淡系 · 编辑感 · 电影级展示 · 三语
   令牌承自 0025 AURELIA-Radium（龙哥钦定浅色版），升级超集
   ============================================================ */
:root{
  --bg:#F6F5F2; --bg-2:#FBFAF9; --surface:#FFFFFF;
  --ink:#18171C; --ink-2:#45434D; --muted:#8A8792;
  --line:#ECE8E1; --line-2:#E1DCD2;
  --iris:#6366F1; --iris-d:#4F51E3; --iris-soft:rgba(99,102,241,.09);
  --gold:#BE9447; --gold-soft:rgba(190,148,71,.12);
  --sh:0 4px 22px rgba(22,20,30,.05);
  --sh-md:0 12px 34px rgba(22,20,30,.09);
  --sh-lg:0 26px 64px rgba(22,20,30,.16);
  --r:20px; --r-sm:13px; --r-xs:9px;
  --disp:"Fraunces",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --mono:"Space Grotesk","Inter",sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1320px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-weight:400;line-height:1.62;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--iris);color:#fff}

/* soft grain + aura backdrop, kept very light */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60% 50% at 80% -5%,var(--iris-soft),transparent 70%),
    radial-gradient(50% 45% at 5% 8%,var(--gold-soft),transparent 70%),
    linear-gradient(180deg,var(--bg-2),var(--bg) 38%);
}

/* ---------- utilities ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,56px)}
.eyebrow{font-family:var(--mono);font-size:12.5px;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--iris);display:inline-flex;align-items:center;gap:11px}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.6}
.eyebrow.center{justify-content:center}
.h2{font-family:var(--disp);font-weight:560;font-size:clamp(30px,4.6vw,54px);line-height:1.06;
  letter-spacing:-.018em;font-optical-sizing:auto}
.lead{color:var(--ink-2);font-size:clamp(15px,1.7vw,18px);max-width:56ch}
.muted{color:var(--muted)}

.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.07s}
.reveal[data-d="2"]{transition-delay:.14s}
.reveal[data-d="3"]{transition-delay:.21s}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:var(--ink);color:#fff;padding:13px 24px;border-radius:44px;
  font-size:14px;font-weight:500;letter-spacing:.005em;
  transition:transform .5s var(--ease),background .35s,box-shadow .5s;will-change:transform}
.btn:hover{transform:translateY(-3px);background:#000;box-shadow:0 14px 30px rgba(22,20,30,.22)}
.btn .ic{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.7}
.btn-lg{padding:16px 30px;font-size:15px}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line-2);box-shadow:var(--sh)}
.btn-ghost:hover{background:#fff;box-shadow:var(--sh-md);transform:translateY(-3px)}
.btn-iris{background:var(--iris)}.btn-iris:hover{background:var(--iris-d)}

.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:9500;
  background:linear-gradient(90deg,var(--iris),var(--gold));transition:width .12s linear}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:8000;display:flex;align-items:center;
  justify-content:space-between;padding:20px clamp(18px,5vw,56px);
  transition:padding .5s var(--ease),background .5s,box-shadow .5s,backdrop-filter .5s}
.nav.shrink{padding:12px clamp(18px,5vw,56px);background:rgba(246,245,242,.8);
  backdrop-filter:blur(16px) saturate(1.4);box-shadow:0 1px 0 var(--line)}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--disp);font-weight:600;
  font-size:21px;letter-spacing:-.01em}
.brand .mark{width:30px;height:30px;flex:0 0 auto}
.brand b{font-weight:600}.brand span{color:var(--gold);font-style:italic}
.nav-right{display:flex;align-items:center;gap:clamp(10px,2vw,24px)}
.nav-links{display:flex;gap:6px}
.nav-links a{font-size:14px;color:var(--ink-2);padding:7px 13px;border-radius:30px;transition:.3s}
.nav-links a:hover{color:var(--iris);background:var(--iris-soft)}
.lang{display:flex;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:40px;padding:3px}
.lang button{color:var(--muted);font-family:var(--mono);font-size:11.5px;font-weight:500;
  padding:5px 9px;border-radius:40px;transition:.3s}
.lang button.active{background:var(--ink);color:#fff}
@media(max-width:820px){.nav-links{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:120px clamp(20px,5vw,56px) 40px;overflow:hidden}
.hero-layers{position:absolute;inset:0;z-index:-1}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.14;
  filter:saturate(1.05) contrast(1.02);mix-blend-mode:luminosity}
.hero-wash{position:absolute;inset:0;background:
  radial-gradient(70% 60% at 50% 35%,transparent,var(--bg) 78%),
  linear-gradient(180deg,rgba(246,245,242,.2),var(--bg))}
#hero-canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-inner{max-width:var(--maxw);margin:0 auto;width:100%}
.hero h1{font-family:var(--disp);font-weight:540;font-size:clamp(42px,8.2vw,104px);
  line-height:1.0;letter-spacing:-.032em;max-width:16ch;margin:22px 0 0;font-optical-sizing:auto}
.hero h1 em{font-style:italic;color:var(--gold);font-weight:500}
.hero-sub{margin-top:26px;max-width:52ch;color:var(--ink-2);font-size:clamp(15.5px,1.9vw,19px)}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-stats{display:flex;gap:clamp(20px,5vw,64px);margin-top:64px;flex-wrap:wrap}
.hstat{display:flex;flex-direction:column;gap:4px}
.hstat b{font-family:var(--disp);font-weight:580;font-size:clamp(28px,4vw,44px);letter-spacing:-.02em;line-height:1}
.hstat span{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted)}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);display:flex;
  flex-direction:column;align-items:center;gap:8px;color:var(--muted);font-family:var(--mono);font-size:11px;letter-spacing:.1em}
.scroll-cue .dotline{width:1px;height:38px;background:linear-gradient(var(--muted),transparent);position:relative;overflow:hidden}
.scroll-cue .dotline::after{content:"";position:absolute;top:-8px;left:0;width:1px;height:8px;background:var(--iris);animation:cue 1.8s var(--ease) infinite}
@keyframes cue{0%{top:-8px}70%{top:38px}100%{top:38px}}

/* ---------- section frame ---------- */
.section{padding:clamp(70px,11vw,128px) 0;position:relative}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:40px}
.section-head .txt{max-width:60ch}
.section-head .h2{margin-top:14px}
.section-head .lead{margin-top:12px;font-size:16px}

/* ---------- filters ---------- */
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filters button{background:var(--surface);border:1px solid var(--line);color:var(--ink-2);
  font-size:13px;padding:9px 17px;border-radius:40px;transition:.32s var(--ease);white-space:nowrap}
.filters button:hover{border-color:var(--iris);color:var(--iris);transform:translateY(-1px)}
.filters button.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- card grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:clamp(16px,2vw,26px)}
.card{position:relative;border-radius:var(--r);background:var(--surface);box-shadow:var(--sh);
  overflow:hidden;cursor:pointer;border:1px solid var(--line);
  transform-style:preserve-3d;transition:box-shadow .5s var(--ease),transform .5s var(--ease),border-color .5s;
  opacity:0;translate:0 26px}
.card.in{opacity:1;translate:0 0;transition:box-shadow .5s var(--ease),transform .45s var(--ease),border-color .5s,opacity .7s var(--ease),translate .7s var(--ease)}
.card:hover{box-shadow:var(--sh-lg);border-color:transparent}
.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:
  linear-gradient(135deg,var(--c,#6366F1),color-mix(in srgb,var(--c,#6366F1) 40%,#fff))}
.card-media img,.card-media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform 1.1s var(--ease),opacity .6s}
.card-media video{opacity:0}
.card:hover .card-media img{transform:scale(1.06)}
.card:hover .card-media video{opacity:1}
.card-media::after{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,transparent 45%,rgba(16,15,20,.5));opacity:.85;transition:.5s}
.card-no{position:absolute;top:13px;left:14px;z-index:2;font-family:var(--mono);font-weight:500;
  font-size:12px;letter-spacing:.06em;color:#fff;background:rgba(20,18,26,.42);
  backdrop-filter:blur(7px);padding:5px 11px;border-radius:30px}
.card-cat{position:absolute;top:13px;right:14px;z-index:2;font-size:11.5px;color:#fff;
  background:var(--c,#6366F1);padding:5px 12px;border-radius:30px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.card-onmedia{position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff}
.card-onmedia h3{font-family:var(--disp);font-weight:560;font-size:21px;letter-spacing:-.01em;line-height:1.12}
.card-body{padding:17px 18px 19px}
.card-body p{color:var(--ink-2);font-size:13.6px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.status{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;color:var(--muted)}
.status .dot{width:7px;height:7px;border-radius:50%;background:var(--d,#27B36B);box-shadow:0 0 0 3px color-mix(in srgb,var(--d,#27B36B) 22%,transparent)}
.card-go{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--iris);font-weight:500;transition:gap .35s}
.card:hover .card-go{gap:11px}
.grid-count{text-align:center;color:var(--muted);font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;margin-top:34px}

/* ---------- featured ---------- */
.feat-row{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(26px,4vw,60px);align-items:center;margin-top:clamp(40px,7vw,86px)}
.feat-row:nth-child(even){grid-template-columns:.85fr 1.15fr}
.feat-row:nth-child(even) .feat-media{order:2}
.feat-media{position:relative;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-lg);
  aspect-ratio:16/11;background:var(--ink);cursor:pointer;transition:transform .6s var(--ease)}
.feat-media:hover{transform:translateY(-5px)}
.feat-media img,.feat-media video{width:100%;height:100%;object-fit:cover}
.feat-media video{position:absolute;inset:0;opacity:0;transition:opacity .7s}
.feat-media:hover video{opacity:1}
.feat-media .card-no{top:16px;left:16px}
.feat-copy .eyebrow{margin-bottom:16px}
.feat-copy h3{font-family:var(--disp);font-weight:560;font-size:clamp(24px,3vw,38px);letter-spacing:-.02em;line-height:1.08}
.feat-copy .tl{color:var(--gold);font-family:var(--mono);font-size:13px;margin:10px 0 16px;letter-spacing:.01em}
.feat-copy p{color:var(--ink-2);font-size:15.5px;max-width:46ch}
.feat-copy .feat-actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:780px){.feat-row,.feat-row:nth-child(even){grid-template-columns:1fr}.feat-row:nth-child(even) .feat-media{order:0}}

/* ---------- about ---------- */
.about{position:relative}
.about-panel{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--r) + 6px);
  padding:clamp(36px,6vw,76px);box-shadow:var(--sh);position:relative;overflow:hidden}
.about-panel::after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,var(--iris-soft),transparent 70%)}
.about-panel .h2{max-width:18ch}
.about-panel p{color:var(--ink-2);font-size:clamp(15px,1.7vw,17.5px);max-width:64ch;margin-top:20px}
.about-manifesto{font-family:var(--disp)!important;font-style:italic;font-weight:500;font-size:clamp(22px,3vw,34px)!important;color:var(--gold)!important;margin-top:20px!important;letter-spacing:-.01em;max-width:none!important}
.about-credit{margin-top:30px;display:inline-flex;align-items:center;gap:11px;font-family:var(--mono);font-size:13px;
  color:var(--ink);background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 28%,transparent);
  padding:10px 18px;border-radius:40px}
.about-credit .pip{width:8px;height:8px;border-radius:50%;background:var(--gold)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:54px 0 60px;margin-top:40px}
.footer-grid{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}
.footer .brand{font-size:22px;margin-bottom:14px}
.footer-tag{color:var(--ink-2);font-family:var(--disp);font-style:italic;font-size:18px;max-width:30ch}
.footer-made{color:var(--muted);font-size:13px;margin-top:14px}
.footer-langs{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.footer-langs .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.footer-langs .row{display:flex;gap:8px}
.footer-langs button{border:1px solid var(--line);color:var(--ink-2);padding:8px 15px;border-radius:30px;font-size:12.5px;transition:.3s}
.footer-langs button:hover,.footer-langs button.active{border-color:var(--iris);color:var(--iris)}

/* ============================================================
   PROJECT PAGE  (project.html)
   ============================================================ */
.pj-hero{position:relative;min-height:88svh;display:flex;align-items:flex-end;overflow:hidden;
  padding:140px clamp(20px,5vw,56px) clamp(40px,6vw,72px)}
.pj-hero-bg{position:absolute;inset:0;z-index:-2}
.pj-hero-bg img,.pj-hero-bg video{width:100%;height:100%;object-fit:cover}
.pj-hero-bg::after{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(246,245,242,.55) 0%,rgba(246,245,242,.2) 30%,rgba(20,18,26,.32) 75%,rgba(20,18,26,.62))}
.pj-hero-tint{position:absolute;inset:0;z-index:-1;mix-blend-mode:soft-light;
  background:radial-gradient(80% 70% at 30% 90%,var(--c,#6366F1),transparent 70%)}
.pj-hero-inner{max-width:var(--maxw);margin:0 auto;width:100%;color:#fff;position:relative}
.pj-back{position:fixed;top:22px;left:clamp(18px,5vw,56px);z-index:60;display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);color:var(--ink);border:1px solid var(--line);
  padding:9px 16px;border-radius:40px;font-size:13px;box-shadow:var(--sh);transition:.35s}
.pj-back:hover{transform:translateX(-3px);box-shadow:var(--sh-md)}
.pj-eyerow{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.pj-no{font-family:var(--mono);font-weight:500;font-size:14px;letter-spacing:.1em;
  background:rgba(255,255,255,.16);backdrop-filter:blur(8px);padding:6px 13px;border-radius:30px;border:1px solid rgba(255,255,255,.25)}
.pj-catchip{font-size:12.5px;background:var(--c,#6366F1);color:#fff;padding:6px 14px;border-radius:30px}
.pj-status{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12.5px;color:#fff}
.pj-status .dot{width:8px;height:8px;border-radius:50%;background:var(--d,#27B36B);box-shadow:0 0 0 4px rgba(255,255,255,.16)}
.pj-title{font-family:var(--disp);font-weight:540;font-size:clamp(40px,7.5vw,92px);line-height:1.0;letter-spacing:-.03em;text-shadow:0 2px 30px rgba(10,8,16,.25)}
.pj-tagline{font-family:var(--disp);font-style:italic;font-size:clamp(18px,2.6vw,28px);color:#fff;margin-top:18px;max-width:24ch;opacity:.96}
.pj-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.pj-actions .btn-ghost{background:rgba(255,255,255,.92)}

.pj-body{max-width:var(--maxw);margin:0 auto;padding:clamp(56px,9vw,104px) clamp(20px,5vw,56px);
  display:grid;grid-template-columns:1.55fr .9fr;gap:clamp(34px,6vw,80px);align-items:start}
.pj-what .eyebrow{margin-bottom:16px}
.pj-what .lead{font-size:clamp(17px,2vw,21px);line-height:1.66;color:var(--ink);max-width:none;font-family:var(--disp);font-weight:400}
.pj-meta{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 26px 28px;box-shadow:var(--sh)}
.pj-meta h4{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.pj-meta dl{display:flex;flex-direction:column;gap:0}
.pj-meta .mrow{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 0;border-top:1px solid var(--line)}
.pj-meta .mrow:first-of-type{border-top:none}
.pj-meta dt{font-size:13px;color:var(--muted)}
.pj-meta dd{font-size:13.5px;color:var(--ink);text-align:right;font-weight:500}
.pj-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:6px}
.pj-tags span{font-family:var(--mono);font-size:11.5px;color:var(--ink-2);background:var(--bg);border:1px solid var(--line);padding:5px 11px;border-radius:30px}
.pj-meta .btn{width:100%;margin-top:22px}

.pj-features{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,56px) clamp(40px,7vw,90px)}
.pj-features .eyebrow{margin-bottom:26px}
.pj-feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.pj-feat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:26px 24px;
  box-shadow:var(--sh);transition:transform .5s var(--ease),box-shadow .5s}
.pj-feat:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.pj-feat .n{font-family:var(--mono);font-size:13px;color:var(--c,#6366F1);font-weight:600}
.pj-feat p{margin-top:13px;font-size:15px;color:var(--ink);line-height:1.5}

.pj-nav{border-top:1px solid var(--line);max-width:var(--maxw);margin:0 auto;
  padding:36px clamp(20px,5vw,56px) 80px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
.pj-nav a{display:flex;flex-direction:column;gap:5px;color:var(--ink-2);transition:.35s;max-width:46%}
.pj-nav a:hover{color:var(--iris)}
.pj-nav .k{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.pj-nav .v{font-family:var(--disp);font-size:19px}
.pj-nav .next{text-align:right;align-items:flex-end;margin-left:auto}
@media(max-width:860px){.pj-body{grid-template-columns:1fr}.pj-meta{position:static}}

/* ---------- reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .card{opacity:1!important;translate:0 0!important}
  .scroll-cue .dotline::after{animation:none}
  .hero-video,.card-media video,.feat-media video,.pj-hero-bg video{display:none}
}