/* ============================================================
   李根 · 个人作品集简历 — 深色电影感
   ============================================================ */
:root{
  --bg:        #0a0a0e;
  --bg-2:      #0e0e14;
  --panel:     #14141b;
  --line:      rgba(201,169,110,.22);
  --line-soft: rgba(255,255,255,.08);
  --gold:      #c9a96e;
  --gold-soft: #e0c79a;
  --ink:       #f2ede4;
  --ink-dim:   #a8a294;
  --ink-faint: #6f6a5e;
  --serif: "Noto Serif SC","Source Han Serif SC","STSong","SimSun",serif;
  --sans:  "Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  --en:    "Cormorant Garamond","Noto Serif SC",serif;
  --ease:  cubic-bezier(.22,.61,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-weight:300;font-size:16px;line-height:1.8;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  font-variant-numeric:lining-nums tabular-nums;
  font-feature-settings:"lnum" 1,"onum" 0,"tnum" 1;
}
::selection{background:var(--gold);color:#0a0a0e}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit}

/* 细腻噪点，提升胶片质感 */
body::after{
  content:"";position:fixed;inset:0;z-index:2000;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

/* 滚动条 */
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:#0a0a0e}
::-webkit-scrollbar-thumb{background:#2a2a33;border-radius:9px}
::-webkit-scrollbar-thumb:hover{background:var(--gold)}

/* ============================ 导航 ============================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  display:flex;align-items:center;gap:34px;
  padding:0 clamp(20px,4vw,56px);height:72px;
  transition:background .4s var(--ease),height .4s var(--ease),border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(10,10,14,.86);backdrop-filter:blur(14px);height:60px;border-color:var(--line-soft)}
.nav-logo{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:19px;letter-spacing:.12em}
.logo-mark{
  display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);
  color:var(--gold);font-size:17px;transform:rotate(45deg);
}
.logo-mark{border-radius:2px}
.logo-mark{transition:transform .5s var(--ease)}
.nav-logo:hover .logo-mark{transform:rotate(135deg)}
.logo-text i{font-style:normal;font-family:var(--en);font-size:12px;color:var(--ink-faint);letter-spacing:.28em;margin-left:6px}
.nav-links{display:flex;gap:clamp(14px,2.2vw,30px);margin-left:auto}
.nav-links a{font-size:13.5px;color:var(--ink-dim);letter-spacing:.08em;position:relative;padding:4px 0;transition:color .3s}
.nav-links a i{font-style:normal;font-family:var(--en);font-size:10.5px;color:var(--ink-faint);margin-left:3px;letter-spacing:.14em}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--gold);transition:width .35s var(--ease)}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.on::after{width:100%}
.nav-phone{font-family:var(--en);font-size:15px;letter-spacing:.14em;color:var(--gold);border-bottom:1px solid transparent;transition:border-color .3s}
.nav-phone:hover{border-color:var(--gold)}
.nav-burger{display:none;flex-direction:column;gap:6px;padding:8px}
.nav-burger span{width:24px;height:1.5px;background:var(--ink);transition:.3s}

/* ============================ 首屏 ============================ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{
  position:absolute;inset:-8% 0;background:url("../img/works-heli-forklift.png") center 38%/cover no-repeat;
  will-change:transform;
}
.hero-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,10,14,.72) 0%,rgba(10,10,14,.45) 34%,rgba(10,10,14,.82) 78%,#0a0a0e 100%),
    radial-gradient(90% 70% at 18% 62%,rgba(10,10,14,.55),transparent 60%);
}
.hero-frame{
  position:absolute;inset:clamp(14px,2.4vw,30px);border:1px solid var(--line-soft);
  pointer-events:none;
}
.hero-frame::before,.hero-frame::after{
  content:"";position:absolute;width:26px;height:26px;border-color:var(--gold);border-style:solid;
}
.hero-frame::before{top:-1px;left:-1px;border-width:1px 0 0 1px}
.hero-frame::after{bottom:-1px;right:-1px;border-width:0 1px 1px 0}
.hero-vertical{
  position:absolute;right:clamp(30px,4.5vw,64px);top:50%;transform:translateY(-50%);
  writing-mode:vertical-rl;font-family:var(--serif);font-size:14px;letter-spacing:.5em;
  color:var(--ink-faint);
}
.hero-inner{position:relative;z-index:2;padding:0 clamp(24px,7vw,110px);max-width:1080px}
.hero-kicker{
  font-family:var(--en);font-size:clamp(12px,1.3vw,15px);letter-spacing:.42em;
  color:var(--gold);margin-bottom:26px;display:flex;align-items:center;gap:16px;
}
.hero-kicker::before{content:"";width:44px;height:1px;background:var(--gold)}
.hero-title{
  font-family:var(--serif);font-weight:900;line-height:1.04;
  font-size:clamp(64px,11vw,150px);letter-spacing:.06em;color:var(--ink);
}
.hero-title-en{
  display:block;font-family:var(--en);font-weight:400;font-style:italic;
  font-size:clamp(15px,1.9vw,24px);letter-spacing:.55em;color:transparent;
  -webkit-text-stroke:1px rgba(201,169,110,.55);margin-top:10px;
}
.hero-sub{
  margin-top:30px;font-size:clamp(16px,2vw,21px);font-weight:400;color:var(--ink);
  letter-spacing:.14em;
}
.hero-sub em{font-style:normal;color:var(--gold);margin:0 10px;font-family:var(--en)}
.hero-desc{margin-top:16px;color:var(--ink-dim);font-size:clamp(14px,1.4vw,16px);max-width:560px}
.hero-actions{margin-top:44px;display:flex;gap:18px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 30px;font-size:14px;
  letter-spacing:.22em;border:1px solid var(--gold);transition:.35s var(--ease);
}
.btn-solid{background:var(--gold);color:#14100a;font-weight:500}
.btn-solid:hover{background:transparent;color:var(--gold)}
.btn-ghost{color:var(--ink);border-color:var(--line-soft)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.hero-scroll{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;
  font-family:var(--en);font-size:11px;letter-spacing:.4em;color:var(--ink-faint);
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.hero-scroll span{width:1px;height:52px;background:linear-gradient(var(--gold),transparent);display:block;animation:drip 2.2s var(--ease) infinite}
@keyframes drip{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);
  overflow:hidden;padding:18px 0;background:var(--bg-2);
}
.marquee-track{display:flex;width:max-content;animation:marquee 36s linear infinite}
.marquee-track span{
  display:flex;align-items:center;font-family:var(--serif);font-size:15px;
  letter-spacing:.3em;color:var(--ink-faint);white-space:nowrap;
}
.marquee-track i{font-style:normal;color:var(--gold);margin:0 26px;font-size:11px}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============================ 通用区块 ============================ */
.section{max-width:1280px;margin:0 auto;padding:clamp(90px,11vw,150px) clamp(24px,5vw,64px)}
.section-alt{max-width:none;background:var(--bg-2)}
.section-alt > *{max-width:1280px;margin-left:auto;margin-right:auto}
.section-head{display:flex;align-items:flex-end;gap:26px;margin-bottom:clamp(46px,6vw,72px)}
.section-num{
  font-family:var(--en);font-size:clamp(46px,6vw,72px);line-height:.8;color:transparent;
  -webkit-text-stroke:1px rgba(201,169,110,.4);
}
.section-en{font-family:var(--en);font-size:13px;letter-spacing:.42em;color:var(--gold);margin-bottom:10px}
.section-title{font-family:var(--serif);font-weight:600;font-size:clamp(30px,4vw,44px);letter-spacing:.1em}
.section-head::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent);margin-bottom:14px}

/* 渐显动画 */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.12s}.d2{transition-delay:.24s}.d3{transition-delay:.36s}.d4{transition-delay:.48s}.d5{transition-delay:.6s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none}
  html{scroll-behavior:auto}
}

/* ============================ 关于我 ============================ */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(40px,6vw,90px);align-items:start}
.lead{font-family:var(--serif);font-size:clamp(18px,1.9vw,22px);line-height:2;color:var(--ink);margin-bottom:22px}
.lead strong,.about-copy strong{color:var(--gold);font-weight:600}
.about-copy > p:not(.lead){color:var(--ink-dim);margin-bottom:18px}
.about-edu{margin-top:30px;border-top:1px solid var(--line-soft);padding-top:26px}
.about-edu h3{font-size:15px;letter-spacing:.2em;font-weight:500;margin-bottom:18px;display:flex;align-items:baseline;gap:12px}
.about-edu h3 i{font-style:normal;font-family:var(--en);font-size:11px;letter-spacing:.3em;color:var(--ink-faint)}
.about-edu ul{list-style:none}
.about-edu li{display:grid;grid-template-columns:200px 1fr;gap:4px 20px;padding:10px 0;border-bottom:1px dashed var(--line-soft);font-size:14.5px}
.edu-time{color:var(--ink-faint);font-family:var(--en);letter-spacing:.06em}
.edu-name{color:var(--ink);font-weight:400}
.edu-note{grid-column:2;color:var(--ink-dim);font-size:13.5px}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tags span{
  font-size:12.5px;letter-spacing:.12em;color:var(--gold-soft);
  border:1px solid var(--line);padding:7px 16px;border-radius:999px;
  transition:.3s;
}
.tags span:hover{background:var(--gold);color:#14100a;border-color:var(--gold)}
.about-media{position:relative;align-self:center}
.about-media::before{
  content:"";position:absolute;top:-24px;right:-18px;width:120px;height:120px;
  border-top:1px solid var(--line);border-right:1px solid var(--line);pointer-events:none;
}
.about-photo{position:relative;overflow:hidden;border:1px solid var(--line-soft)}
.about-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 1.2s var(--ease)}
.about-photo:hover img{transform:scale(1.045)}
.about-photo figcaption{
  position:absolute;left:0;bottom:0;padding:10px 18px;font-size:12px;letter-spacing:.2em;
  color:var(--ink-dim);background:linear-gradient(transparent,rgba(10,10,14,.85));
}

/* ============================ 经历时间线 ============================ */
.timeline{list-style:none;position:relative;max-width:960px}
.timeline::before{content:"";position:absolute;left:132px;top:8px;bottom:8px;width:1px;background:linear-gradient(var(--gold),rgba(201,169,110,.08))}
.timeline li{display:grid;grid-template-columns:110px 1fr;gap:0 46px;padding:0 0 clamp(40px,5vw,58px)}
.timeline li:last-child{padding-bottom:0}
.tl-time{display:flex;align-items:baseline;gap:10px;justify-content:flex-end;position:relative;padding-top:6px}
.tl-year{font-family:var(--en);font-size:17px;letter-spacing:.08em;color:var(--ink)}
.tl-dash{width:14px;height:1px;background:var(--ink-faint)}
.tl-now{font-size:12px;color:var(--ink-faint);letter-spacing:.1em}
.tl-body{position:relative;padding-left:34px}
.tl-body::before{
  content:"";position:absolute;left:-6px;top:10px;width:9px;height:9px;transform:rotate(45deg);
  background:var(--bg-2);border:1px solid var(--gold);transition:background .3s;
}
.timeline li:hover .tl-body::before{background:var(--gold)}
.tl-body h3{font-family:var(--serif);font-weight:600;font-size:clamp(17px,1.8vw,20px);letter-spacing:.04em}
.tl-body h3 i{font-style:normal;font-family:var(--sans);font-weight:300;font-size:13px;color:var(--gold);margin-left:14px;letter-spacing:.14em}
.tl-body p{margin-top:10px;color:var(--ink-dim);font-size:14.5px;max-width:640px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-tags span{font-size:11.5px;color:var(--ink-faint);border:1px solid var(--line-soft);padding:3px 12px;border-radius:999px;letter-spacing:.1em}

/* ============================ 作品 ============================ */
.filter{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:38px}
.filter button{
  font-size:13px;letter-spacing:.16em;color:var(--ink-dim);padding:9px 20px;
  border:1px solid var(--line-soft);border-radius:999px;transition:.3s var(--ease);
}
.filter button:hover{color:var(--ink);border-color:var(--gold)}
.filter button.on{background:var(--gold);color:#14100a;border-color:var(--gold);font-weight:500}
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-flow:dense;gap:14px}
.work{
  position:relative;overflow:hidden;cursor:pointer;background:var(--panel);
  aspect-ratio:4/3;
}
.work.w-wide{grid-column:span 2;aspect-ratio:8/3}
.work img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),filter .6s}
.work:hover img{transform:scale(1.06)}
.work::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(10,10,14,.88));
  opacity:0;transition:opacity .5s;
}
.work:hover::after{opacity:1}
.work figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px 22px;
  transform:translateY(14px);opacity:0;transition:.5s var(--ease);
}
.work:hover figcaption{transform:none;opacity:1}
.work figcaption strong{display:block;font-family:var(--serif);font-weight:600;font-size:16.5px;letter-spacing:.06em}
.work figcaption span{display:block;font-size:12.5px;color:var(--ink-dim);margin-top:3px;letter-spacing:.08em}
.work figcaption em{
  position:absolute;top:18px;right:20px;font-style:normal;font-size:11px;letter-spacing:.22em;
  color:var(--gold);border:1px solid var(--line);padding:3px 10px;border-radius:999px;
}
.work.hide{display:none}

/* ============================ SHOWREEL + AI ============================ */
.reel{position:relative;border:1px solid var(--line-soft);margin-bottom:clamp(46px,6vw,70px)}
.reel video{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:#000}
.reel-cover{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  background:linear-gradient(180deg,rgba(10,10,14,.42),rgba(10,10,14,.66));cursor:pointer;
  transition:opacity .5s;
}
.reel.playing .reel-cover{opacity:0;pointer-events:none}
.reel-badge{
  font-family:var(--en);font-size:12px;letter-spacing:.4em;color:var(--gold);
  border:1px solid var(--line);padding:8px 20px;border-radius:999px;
}
.play-disc{
  display:grid;place-items:center;width:88px;height:88px;border-radius:50%;
  border:1px solid var(--gold);color:var(--gold);position:relative;transition:.4s var(--ease);
}
.play-disc::before{content:"";position:absolute;inset:-14px;border:1px solid var(--line);border-radius:50%;animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{0%{transform:scale(.82);opacity:0}45%{opacity:1}100%{transform:scale(1.12);opacity:0}}
.reel-cover:hover .play-disc{background:var(--gold);color:#14100a;transform:scale(1.05)}
.reel-title{font-family:var(--serif);font-size:clamp(20px,2.6vw,30px);font-weight:600;letter-spacing:.14em}
.reel-hint{font-size:12.5px;color:var(--ink-dim);letter-spacing:.18em}
.reel video.playing{object-fit:contain;background:#000}
.reel-chapters{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  padding:16px 14px 20px;border:1px solid var(--line-soft);border-top:none;background:var(--bg);
}
.reel-chapters button{
  font-size:12px;letter-spacing:.08em;color:var(--ink-dim);
  border:1px solid var(--line-soft);padding:7px 14px;border-radius:999px;transition:.3s var(--ease);
}
.reel-chapters button:hover{color:var(--gold);border-color:var(--gold)}

.ai-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:16px}
.ai-lead{
  border:1px solid var(--line-soft);padding:clamp(30px,3.4vw,48px);display:flex;flex-direction:column;justify-content:center;
  background:linear-gradient(160deg,rgba(201,169,110,.07),transparent 55%);
}
.ai-lead h3{font-family:var(--serif);font-weight:400;font-size:clamp(24px,2.6vw,34px);line-height:1.5;letter-spacing:.06em}
.ai-lead h3 strong{color:var(--gold);font-weight:900}
.ai-lead p{margin-top:20px;color:var(--ink-dim);font-size:14.5px}
.ai-lead p strong{color:var(--ink);font-weight:400}
.ai-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.ai-badges span{font-size:12px;letter-spacing:.16em;color:var(--gold);border:1px solid var(--line);padding:6px 16px;border-radius:999px}
.ai-video{position:relative;border:1px solid var(--line-soft)}
.ai-video video{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:#000}
.ai-video figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:14px 18px;border-top:1px solid var(--line-soft)}
.ai-video figcaption strong{font-family:var(--serif);font-weight:600;font-size:15px;letter-spacing:.05em}
.ai-video figcaption span{font-size:12px;color:var(--ink-faint);letter-spacing:.08em;white-space:nowrap}
.ai-phone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;border:1px solid var(--line-soft);padding:30px;background:radial-gradient(70% 60% at 50% 40%,rgba(201,169,110,.08),transparent)}
.phone-frame{
  position:relative;width:min(240px,68%);border-radius:30px;border:1px solid var(--line);
  padding:10px;background:#0c0c11;box-shadow:0 30px 70px rgba(0,0,0,.55);
}
.phone-frame img{border-radius:21px;aspect-ratio:9/16;object-fit:cover}
.phone-pill{
  position:absolute;top:20px;left:50%;transform:translateX(-50%);
  font-size:10.5px;letter-spacing:.24em;color:#fff;background:rgba(10,10,14,.62);
  border:1px solid var(--line-soft);padding:5px 14px;border-radius:999px;backdrop-filter:blur(6px);
}
.ai-phone p{text-align:center}
.ai-phone p strong{display:block;font-family:var(--serif);font-size:15.5px;font-weight:600;letter-spacing:.06em}
.ai-phone p span{font-size:12px;color:var(--ink-faint);letter-spacing:.1em}

/* ============================ 核心项目 ============================ */
.proj-list{list-style:none;border-top:1px solid var(--line-soft);columns:2;column-gap:64px}
.proj-list li{
  break-inside:avoid;display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:18px;
  padding:20px 4px;border-bottom:1px solid var(--line-soft);transition:background .3s,padding .3s;
}
.proj-list li:hover{background:rgba(201,169,110,.05);padding-left:14px}
.proj-client{font-size:12px;letter-spacing:.14em;color:var(--gold);white-space:nowrap}
.proj-list strong{font-family:var(--serif);font-weight:600;font-size:16.5px;letter-spacing:.04em}
.proj-type{font-size:12px;color:var(--ink-faint);letter-spacing:.12em;white-space:nowrap}

/* ============================ 联系 & 页脚 ============================ */
.contact{max-width:none;background:var(--bg-2);border-top:1px solid var(--line-soft);position:relative;overflow:hidden}
.contact::before{
  content:"李根";position:absolute;right:-1%;bottom:-6%;font-family:var(--serif);font-weight:900;
  font-size:clamp(180px,26vw,380px);line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(201,169,110,.09);pointer-events:none;
}
.contact-inner{max-width:1280px;margin:0 auto;padding:clamp(90px,11vw,150px) clamp(24px,5vw,64px) 60px}
.contact .section-en{color:var(--gold)}
.contact-title{
  font-family:var(--serif);font-weight:900;font-size:clamp(38px,6.5vw,76px);
  line-height:1.28;letter-spacing:.08em;margin-top:14px;
}
.contact-title em{font-style:normal;color:var(--gold);position:relative}
.contact-title em::after{content:"";position:absolute;left:0;bottom:6px;width:100%;height:2px;background:var(--gold);opacity:.5}
.contact-cards{display:flex;gap:18px;margin-top:56px;flex-wrap:wrap}
.contact-card{
  border:1px solid var(--line-soft);padding:26px 34px;min-width:280px;flex:1;
  transition:.35s var(--ease);position:relative;overflow:hidden;
}
.contact-card::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(201,169,110,.12),transparent 60%);opacity:0;transition:.35s}
.contact-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.contact-card:hover::before{opacity:1}
.contact-card i{font-style:normal;font-size:12px;letter-spacing:.3em;color:var(--ink-faint)}
.contact-card strong{display:block;font-family:var(--en);font-size:clamp(20px,2.2vw,27px);letter-spacing:.06em;margin:10px 0 4px;color:var(--ink)}
.contact-card span{font-size:12.5px;color:var(--gold);letter-spacing:.16em}
.contact-note{margin-top:30px;font-size:13.5px;color:var(--ink-dim);letter-spacing:.2em}
.footer{
  max-width:1280px;margin:0 auto;padding:30px clamp(24px,5vw,64px) 40px;
  border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-logo{font-family:var(--serif);font-size:18px;letter-spacing:.14em}
.footer-logo i{font-style:normal;font-family:var(--en);font-size:11px;color:var(--ink-faint);letter-spacing:.3em;margin-left:8px}
.footer p{font-size:12px;color:var(--ink-faint);letter-spacing:.06em;max-width:560px}
.footer p.footer-trust{max-width:100%;border-top:1px dashed var(--line-soft);padding-top:14px;margin-top:4px;width:100%}
.footer p.footer-trust::before{content:"ⓘ ";color:var(--gold)}

/* ============================ 灯箱 ============================ */
.lightbox{
  position:fixed;inset:0;z-index:1500;background:rgba(7,7,10,.94);backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;gap:14px;padding:30px;
  opacity:0;pointer-events:none;transition:opacity .35s;
}
.lightbox.open{opacity:1;pointer-events:auto}
.lb-stage{max-width:min(1180px,88vw);display:flex;flex-direction:column;align-items:center;gap:14px}
.lb-stage img{max-width:100%;max-height:76vh;object-fit:contain;box-shadow:0 40px 120px rgba(0,0,0,.6)}
.lb-stage figcaption{display:flex;align-items:baseline;gap:18px;color:var(--ink)}
.lb-stage strong{font-family:var(--serif);font-weight:600;font-size:17px;letter-spacing:.06em}
.lb-stage span{font-size:12.5px;color:var(--ink-dim);letter-spacing:.1em}
.lb-stage em{font-style:normal;font-family:var(--en);font-size:12px;color:var(--ink-faint);letter-spacing:.2em}
.lb-close,.vmodal .vm-close{
  position:absolute;top:20px;right:26px;font-size:34px;line-height:1;color:var(--ink-dim);
  transition:color .3s;z-index:5;
}
.lb-close:hover,.vmodal .vm-close:hover{color:var(--gold)}
.lb-prev,.lb-next{
  font-family:var(--en);font-size:52px;line-height:1;color:var(--ink-dim);padding:20px 14px;
  transition:color .3s,transform .3s;flex-shrink:0;
}
.lb-prev:hover,.lb-next:hover{color:var(--gold)}
.lb-prev:hover{transform:translateX(-4px)}
.lb-next:hover{transform:translateX(4px)}

/* ============================ 视频弹窗 ============================ */
.vmodal{
  position:fixed;inset:0;z-index:1500;background:rgba(7,7,10,.94);backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;padding:4vh 4vw;
  opacity:0;pointer-events:none;transition:opacity .35s;
}
.vmodal.open{opacity:1;pointer-events:auto}
.vm-box{width:min(1200px,94vw)}
.vm-box video{width:100%;max-height:82vh;box-shadow:0 40px 120px rgba(0,0,0,.6);background:#000}

/* ============================ 响应式 ============================ */
@media (max-width:1080px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .work.w-wide{grid-column:span 2;aspect-ratio:16/7}
  .ai-grid{grid-template-columns:1fr 1fr}
  .ai-lead{grid-column:1/-1}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:60px;right:0;flex-direction:column;gap:0;width:min(78vw,320px);
    background:rgba(12,12,17,.97);border-left:1px solid var(--line-soft);
    padding:18px 0;margin:0;transform:translateX(100%);transition:transform .4s var(--ease);
  }
  .nav-links.open{transform:none}
  .nav-links a{padding:14px 30px;font-size:15px}
  .nav-links a i{float:right;margin-top:4px}
  .nav-burger{display:flex;margin-left:auto}
  .nav-phone{margin-left:auto}
  .nav-burger{margin-left:0}
  .about-grid{grid-template-columns:1fr}
  .timeline::before{left:26px}
  .timeline li{grid-template-columns:1fr;gap:14px}
  .tl-time{justify-content:flex-start;padding-left:52px}
  .tl-year{font-size:15px}
  .tl-body{padding-left:52px}
  .tl-body::before{left:22px}
  .ai-grid{grid-template-columns:1fr}
  .proj-list{columns:1}
  .hero-vertical{display:none}
  .about-edu li{grid-template-columns:1fr}
  .edu-note{grid-column:1}
}
@media (max-width:640px){
  .works-grid{grid-template-columns:1fr}
  .work.w-wide{grid-column:span 1;aspect-ratio:16/10}
  .hero-title{font-size:clamp(58px,20vw,84px)}
  .nav .nav-phone{display:none}
  .contact-card{min-width:100%}
  .lb-prev,.lb-next{position:absolute;top:50%;transform:translateY(-50%);z-index:5}
  .lb-prev{left:6px}.lb-next{right:6px}
  .lb-prev:hover{transform:translateY(-50%)}
  .lb-next:hover{transform:translateY(-50%)}
}