:root{
  --paper:#F7F3E9;
  --ink:#26271F;
  --ink-2:#5C5B52;
  --cinnabar:#A52F24;
  --cinnabar-deep:#81251C;
  --line:#DCD4C2;
  --kai:'KaiTi','STKaiti','Noto Serif SC','SimSun',serif;
  --xingkai:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --serif:'Noto Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--xingkai);
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--cinnabar);color:#fff}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px}

h1,h2,h3,.brand,.fact .v,footer .sig{font-family:var(--kai);font-weight:400}

/* ===== 顶栏 ===== */
header.site{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(247,243,233,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
header.site .wrap{
  height:64px;display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;letter-spacing:.08em}
.brand .seal{
  width:28px;height:28px;background:var(--cinnabar);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--kai);font-size:17px;line-height:1;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.25);
}
nav{display:flex;gap:26px}
nav a{
  font-size:15px;color:var(--ink-2);position:relative;padding:4px 0;
  transition:color .25s;letter-spacing:.08em;
}
nav a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--cinnabar);transition:width .25s;
}
nav a:hover,nav a.active{color:var(--ink)}
nav a:hover::after,nav a.active::after{width:100%}

/* ===== Hero ===== */
.hero{
  padding:160px 0 100px;position:relative;
  background:
    linear-gradient(90deg,rgba(247,243,233,.96) 0%,rgba(247,243,233,.72) 48%,rgba(247,243,233,.28) 100%),
    url('../assets/ink-mountain.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1fr auto;gap:48px;align-items:start;
}
.hero-copy{max-width:640px}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:15px;letter-spacing:.35em;color:var(--cinnabar);
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--cinnabar)}
.hero h1{
  font-size:clamp(48px,7.5vw,90px);
  line-height:1.2;letter-spacing:.02em;
  margin:26px 0 12px;
}
.hero h1 .name{
  font-family:var(--kai);
  font-size:1.22em;
  color:var(--cinnabar);
  white-space:nowrap;
}
.hero .role{
  font-size:clamp(18px,2.4vw,24px);color:var(--ink-2);
  margin-bottom:18px;letter-spacing:.06em;
}
.hero .tagline{
  font-size:16px;color:var(--ink-2);max-width:540px;margin-bottom:36px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;font-size:16px;
  border:1px solid var(--ink);cursor:pointer;transition:all .25s;
  background:transparent;color:var(--ink);letter-spacing:.12em;
}
.btn svg{width:15px;height:15px}
.btn.primary{background:var(--cinnabar);border-color:var(--cinnabar);color:#fff}
.btn.primary:hover{background:var(--cinnabar-deep);border-color:var(--cinnabar-deep)}
.btn.ghost:hover{background:var(--ink);color:var(--paper)}

.hero-side{display:flex;flex-direction:column;align-items:center;gap:24px;padding-top:10px}
.avatar{
  width:130px;height:130px;border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--kai);font-size:48px;color:var(--cinnabar);
  background:rgba(251,249,244,.9);
  box-shadow:0 0 0 6px rgba(247,243,233,.7),0 0 0 7px var(--line);
}
.avatar-cap{font-size:12px;color:var(--ink-2);letter-spacing:.1em;white-space:nowrap}
.hero-inscription{
  writing-mode:vertical-rl;
  font-size:22px;letter-spacing:.55em;
  color:var(--ink);border-left:1px solid var(--line);
  padding-left:20px;padding-top:6px;opacity:.9;
}
.hero-inscription b{color:var(--cinnabar);font-weight:400}

/* ===== 区块通用 ===== */
section{padding:90px 0;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:48px;position:relative;padding-bottom:20px}
.sec-head::after{
  content:'';position:absolute;left:0;bottom:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--line) 0%,rgba(220,212,194,0) 70%);
}
.sec-head .mark{
  width:12px;height:12px;background:var(--cinnabar);align-self:center;flex:none;
}
.sec-head h2{
  font-size:clamp(30px,4.2vw,38px);
  letter-spacing:.1em;
}
.sec-head .sub{font-size:13px;color:var(--ink-2);letter-spacing:.3em;font-family:var(--sans);font-weight:400}

/* ===== 关于 ===== */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:start}
.about-text p{font-size:16px;color:var(--ink);margin-bottom:18px}
.about-text p .hl{color:var(--cinnabar);font-weight:500}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.fact{background:var(--paper);padding:20px 22px}
.fact .k{font-size:13px;letter-spacing:.28em;color:var(--ink-2);margin-bottom:8px;font-family:var(--sans);font-weight:400}
.fact .v{font-size:20px}

/* ===== 兴趣 ===== */
.skills{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.skill{
  border:1px solid var(--line);padding:28px 30px;background:rgba(251,249,244,.7);
  transition:box-shadow .3s,transform .3s;
}
.skill:hover{box-shadow:0 10px 30px rgba(38,39,31,.08);transform:translateY(-3px)}
.skill h3{
  font-size:22px;margin-bottom:10px;
  display:flex;align-items:center;gap:10px;
}
.skill h3::before{content:'';width:9px;height:9px;background:var(--cinnabar);flex:none}
.skill p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:13px;color:var(--ink);border:1px solid var(--line);
  padding:5px 14px;background:var(--paper);letter-spacing:.08em;
}

/* ===== 摄影作品 ===== */
.gallery{
  column-count:3;column-gap:16px;
}
.gallery-item{
  break-inside:avoid;margin-bottom:16px;
  border:1px solid var(--line);overflow:hidden;
  background:rgba(251,249,244,.6);
  cursor:pointer;transition:box-shadow .3s,transform .3s;
}
.gallery-item:hover{
  box-shadow:0 8px 28px rgba(38,39,31,.12);transform:translateY(-2px);
}
.gallery-item img{
  width:100%;display:block;transition:transform .5s ease;
}
.gallery-item:hover img{transform:scale(1.03)}

/* ===== 灯箱 ===== */
.lightbox{
  position:fixed;inset:0;z-index:100;
  background:rgba(20,20,18,.92);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;
  cursor:zoom-out;
}
.lightbox.open{opacity:1;visibility:visible}
.lightbox img{
  max-width:90vw;max-height:88vh;object-fit:contain;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.lightbox-close{
  position:absolute;top:24px;right:28px;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;cursor:pointer;transition:background .25s;
  border:none;
}
.lightbox-close:hover{background:rgba(255,255,255,.25)}
.lightbox-counter{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  color:rgba(255,255,255,.6);font-size:14px;letter-spacing:.2em;
}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-intro h3{
  font-size:clamp(26px,3.6vw,34px);
  margin-bottom:16px;
}
.contact-intro p{color:var(--ink-2);font-size:16px;margin-bottom:28px;max-width:400px}
.contact-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.c-row{background:var(--paper);display:flex;align-items:center;gap:18px;padding:18px 22px}
.c-row .ic{
  width:36px;height:36px;flex:none;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  background:rgba(247,243,233,.6);
}
.c-row .ic svg{width:16px;height:16px;stroke:var(--cinnabar)}
.c-row .k{font-size:13px;letter-spacing:.25em;color:var(--ink-2);margin-bottom:2px;font-family:var(--sans);font-weight:400}
.c-row .v{font-size:15px}

footer{border-top:1px solid var(--line);padding:34px 0 40px}
footer .wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
footer .sig{font-size:22px;letter-spacing:.2em;color:var(--ink)}
footer .sig b{color:var(--cinnabar);font-weight:400}
footer .copy{font-size:14px;color:var(--ink-2);font-family:var(--sans);font-weight:400}

/* ===== 入场动画 ===== */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
.hero-copy .rv{animation:none}
.hero-copy.done .rv{opacity:1;transform:none;transition-delay:var(--d,0s)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv,.hero-copy.done .rv{opacity:1;transform:none;transition:none;animation:none}
  .scroll-progress,.side-dots{display:none}
}

/* ===== 滚动进度条 ===== */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:var(--cinnabar);z-index:200;
  transition:width .1s linear;
}

/* ===== 侧边章节指示器 ===== */
.side-dots{
  position:fixed;right:24px;top:50%;transform:translateY(-50%);
  z-index:60;display:flex;flex-direction:column;gap:14px;
}
.side-dots .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--line);border:1px solid var(--line);
  position:relative;transition:all .3s;
}
.side-dots .dot:hover{background:var(--ink-2);border-color:var(--ink-2)}
.side-dots .dot.active{
  background:var(--cinnabar);border-color:var(--cinnabar);
  transform:scale(1.4);
}
.side-dots .dot::after{
  content:attr(data-label);position:absolute;right:18px;top:50%;
  transform:translateY(-50%);font-size:12px;color:var(--ink-2);
  white-space:nowrap;opacity:0;pointer-events:none;
  transition:opacity .25s;letter-spacing:.1em;
  background:rgba(247,243,233,.9);padding:3px 10px;border:1px solid var(--line);
}
.side-dots .dot:hover::after{opacity:1}

/* ===== 板块转场揭示 ===== */
section{position:relative;overflow:hidden}
section::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent 0%,var(--cinnabar) 50%,transparent 100%);
  transform:scaleX(0);transform-origin:left;
  transition:transform .8s cubic-bezier(.22,1,.36,1);
}
section.revealed::before{transform:scaleX(1)}

/* ===== Hero 视差 ===== */
.hero{background-attachment:fixed}
@media (max-width:880px){
  .hero{background-attachment:scroll}
}

/* ===== 视频作品 ===== */
.video-wrap{max-width:900px;margin:0 auto}
.video-frame{
  position:relative;width:100%;aspect-ratio:16/9;
  background:#1a1a18;border:1px solid var(--line);
  overflow:hidden;cursor:pointer;
}
.video-frame video{
  width:100%;height:100%;object-fit:cover;display:block;
}
.video-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,20,18,.3) 0%,rgba(20,20,18,.6) 100%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:20px;transition:opacity .4s;
}
.video-frame.playing .video-overlay{opacity:0;pointer-events:none}
.play-btn{
  width:76px;height:76px;border-radius:50%;
  background:rgba(165,47,36,.9);color:#fff;border:none;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s;
  box-shadow:0 4px 24px rgba(165,47,36,.4);
}
.play-btn:hover{
  background:var(--cinnabar);transform:scale(1.08);
  box-shadow:0 6px 32px rgba(165,47,36,.55);
}
.play-btn svg{width:32px;height:32px;margin-left:4px}
.video-placeholder-text{
  text-align:center;color:#fff;
}
.vpt-title{
  display:block;font-family:var(--kai);font-size:22px;
  letter-spacing:.2em;margin-bottom:6px;
}
.vpt-sub{
  display:block;font-size:13px;color:rgba(255,255,255,.6);
  letter-spacing:.08em;
}

/* 自定义控制条 */
.video-controls{
  position:absolute;left:0;right:0;bottom:0;
  background:linear-gradient(transparent,rgba(20,20,18,.85));
  padding:32px 16px 12px;opacity:0;
  transition:opacity .3s;
}
.video-frame:hover .video-controls,
.video-frame.playing .video-controls{opacity:1}
.vc-progress{
  position:relative;height:4px;background:rgba(255,255,255,.2);
  cursor:pointer;border-radius:2px;margin-bottom:10px;
  overflow:hidden;
}
.vc-bar{
  position:absolute;left:0;top:0;height:100%;width:0;
  background:var(--cinnabar);border-radius:2px;
}
.vc-buffer{
  position:absolute;left:0;top:0;height:100%;width:0;
  background:rgba(255,255,255,.3);border-radius:2px;
}
.vc-row{display:flex;align-items:center;gap:12px}
.vc-btn{
  background:none;border:none;color:#fff;cursor:pointer;
  width:32px;height:32px;display:flex;align-items:center;justify-content:center;
  border-radius:4px;transition:background .2s;
}
.vc-btn:hover{background:rgba(255,255,255,.15)}
.vc-btn svg{width:18px;height:18px}
.vc-btn .icon-pause,.vc-btn .icon-mute{display:none}
.vc-btn.playing .icon-play{display:none}
.vc-btn.playing .icon-pause{display:block}
.vc-btn.muted .icon-vol{display:none}
.vc-btn.muted .icon-mute{display:block}
.vc-time{
  color:rgba(255,255,255,.7);font-size:12px;
  font-variant-numeric:tabular-nums;letter-spacing:.05em;
}
.vc-spacer{flex:1}

.video-meta{
  margin-top:28px;padding:24px 28px;
  border:1px solid var(--line);background:rgba(251,249,244,.6);
}
.video-meta h3{
  font-size:20px;margin-bottom:8px;
  display:flex;align-items:center;gap:10px;
}
.video-meta h3::before{content:'';width:9px;height:9px;background:var(--cinnabar);flex:none}
.video-meta p{font-size:14px;color:var(--ink-2);line-height:1.8}
.video-meta code{
  font-family:'Courier New',monospace;font-size:13px;
  background:rgba(165,47,36,.08);color:var(--cinnabar);
  padding:2px 8px;border-radius:3px;
}

/* ===== 响应式 ===== */
@media (max-width:880px){
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:120px 0 60px;background:
    linear-gradient(180deg,rgba(247,243,233,.96) 0%,rgba(247,243,233,.78) 60%,rgba(247,243,233,.5) 100%),
    url('../assets/ink-mountain.jpg') center/cover no-repeat;}
  .hero-side{flex-direction:row;justify-content:center;gap:26px}
  .hero-inscription{display:none}
  .skills{grid-template-columns:1fr}
  .gallery{column-count:2}
  .facts{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
  nav{gap:12px}
  nav a{font-size:13px}
  .side-dots{display:none}
  .play-btn{width:60px;height:60px}
  .play-btn svg{width:24px;height:24px}
}
@media (max-width:520px){
  .facts{grid-template-columns:1fr}
  .gallery{column-count:1}
  .hero-actions .btn{flex:1;justify-content:center}
  .wrap{padding:0 20px}
  nav{gap:8px}
  nav a{font-size:12px;letter-spacing:.04em}
  .vpt-title{font-size:18px}
  .vpt-sub{font-size:11px}
}