/* ============================================================
   陈鹏 · 作品集 2026
   Visual system: warm paper (architecture) × near-black (AIGC)
   ============================================================ */

:root{
  --paper:#F4F1E9;
  --paper-2:#EAE4D5;
  --ink:#15150F;
  --ink-2:#3B3A31;
  --night:#08080A;
  --night-2:#0F0F14;
  --night-3:#17171E;
  --violet:#8B7CFF;
  --lime:#C9F25A;
  --clay:#B24A2E;
  --arch:#1E3B33;

  --sans:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei UI","Microsoft YaHei",-apple-system,"Segoe UI",system-ui,sans-serif;
  --mono:"Cascadia Mono","JetBrains Mono",Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,1,.36,1);
  --header:68px;
  --pad:clamp(20px,4.2vw,72px);
}

/* theme tokens ------------------------------------------------ */
body.theme-arch{
  --bg:var(--paper); --bg-2:var(--paper-2); --fg:var(--ink); --fg-2:var(--ink-2);
  --muted:#837F6F; --line:rgba(21,21,15,.14); --line-2:rgba(21,21,15,.30);
  --card:rgba(255,255,255,.32); --card-hover:rgba(255,255,255,.6);
  --accent:var(--arch); --accent-soft:rgba(30,59,51,.08);
  color-scheme:light;
}
body.theme-aigc{
  --bg:var(--night); --bg-2:var(--night-2); --fg:#EDEAE2; --fg-2:#C9C5B9;
  --muted:#8B8A82; --line:rgba(237,234,226,.13); --line-2:rgba(237,234,226,.28);
  --card:rgba(255,255,255,.028); --card-hover:rgba(255,255,255,.06);
  --accent:var(--lime); --accent-soft:rgba(201,242,90,.07);
  color-scheme:dark;
}
body.theme-home{
  --bg:var(--paper); --fg:var(--ink); --muted:#837F6F;
  --line:rgba(21,21,15,.14); --line-2:rgba(21,21,15,.30);
  --card:rgba(255,255,255,.32); --accent:var(--arch);
  color-scheme:light;
}

/* base -------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background-color .5s var(--ease), color .5s var(--ease);
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img,video,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
::selection{background:var(--accent);color:var(--bg)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.mono{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* topbar ------------------------------------------------------ */
.topbar{
  position:fixed;inset:0 0 auto 0;height:var(--header);z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:0 var(--pad);
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:blur(18px) saturate(1.2);
  -webkit-backdrop-filter:blur(18px) saturate(1.2);
  border-bottom:1px solid transparent;
  transition:background-color .4s var(--ease),border-color .4s var(--ease),color .4s var(--ease);
}
.topbar.is-scrolled{border-bottom-color:var(--line)}
/* 首页：顶栏跨在左右分屏上，右侧导航整体落在深色半边，用浅色文字 */
body.theme-home .topbar{
  background:none;backdrop-filter:none;-webkit-backdrop-filter:none;border:0;color:#EDEAE2;
}
body.theme-home .brand{color:var(--arch)}
body.theme-home .nav{margin-left:auto;margin-right:clamp(16px,2.6vw,34px)}
body.theme-home .nav__link{opacity:.72}
body.theme-home .nav__link:hover,body.theme-home .nav__link.is-on{opacity:1}
body.theme-home .nav__num{opacity:.5}
body.theme-home .progress{border-color:rgba(237,234,226,.3)}
body.theme-home .progress__dot{background:#EDEAE2}
@media (max-width:900px){
  body.theme-home .topbar{color:var(--ink)}
  body.theme-home .brand{color:inherit}
  body.theme-home .nav{margin-left:0;margin-right:0}
  body.theme-home .progress{border-color:var(--line-2)}
  body.theme-home .progress__dot{background:var(--ink)}
}
.nav__num{font-family:var(--mono);font-size:.5rem;letter-spacing:.1em;margin-left:6px;opacity:.35}

.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand__mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border:1px solid currentColor;border-radius:50%;
  font-size:.72rem;letter-spacing:.02em;font-weight:600;
  transition:transform .5s var(--ease),background-color .4s var(--ease);
}
.brand__mark span{opacity:.6;margin-left:1px}
.brand:hover .brand__mark{transform:rotate(-12deg)}
.brand__txt{display:flex;flex-direction:column;line-height:1.05}
.brand__txt b{font-size:.92rem;font-weight:600;letter-spacing:.14em}
.brand__txt i{font-style:normal;font-size:.56rem;letter-spacing:.26em;opacity:.55;margin-top:3px}

.nav{display:flex;align-items:center;gap:clamp(14px,2.4vw,38px)}
.nav__link{
  position:relative;font-size:.8rem;letter-spacing:.14em;padding:6px 0;opacity:.62;
  transition:opacity .3s var(--ease);
}
.nav__link:hover{opacity:1}
.nav__link.is-on{opacity:1}
.nav__link.is-on::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:currentColor;
}
.topbar__right{display:flex;align-items:center;gap:14px}
.progress{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line-2);border-radius:999px;
  padding:5px 13px 5px 11px;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;
  transition:background-color .3s var(--ease),border-color .3s var(--ease);
  white-space:nowrap;
}
.progress:hover{background:var(--card-hover)}
.progress__dot{width:5px;height:5px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 var(--accent);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* home hero --------------------------------------------------- */
.hero{display:flex;min-height:100svh;position:relative;background:var(--paper)}
.half{
  position:relative;flex:1 1 50%;min-width:0;overflow:hidden;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:calc(var(--header) + clamp(18px,4vh,44px)) var(--pad) clamp(26px,5vh,52px);
  transition:flex-grow .8s var(--ease),background-color .6s var(--ease),opacity .6s var(--ease);
  isolation:isolate;
}
.half--arch{background:var(--paper);color:var(--ink)}
.half--aigc{background:var(--night);color:#EDEAE2}
.half:hover{flex-grow:1.22}
.hero:hover .half:not(:hover){opacity:.73}
.half__bg{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.half__hit{position:absolute;inset:0;z-index:5;cursor:pointer}
.half__list a,.half__cta{position:relative;z-index:6}
.half__hit:focus-visible{outline:2px solid currentColor;outline-offset:-6px}

/* architectural grid */
.half--arch .half__bg::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right, rgba(30,59,51,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,59,51,.055) 1px, transparent 1px);
  background-size:clamp(38px,4vw,64px) clamp(38px,4vw,64px);
  mask-image:radial-gradient(120% 100% at 30% 40%, #000 30%, transparent 78%);
  -webkit-mask-image:radial-gradient(120% 100% at 30% 40%, #000 30%, transparent 78%);
}
.half--aigc .half__bg::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 55% at 72% 22%, rgba(139,124,255,.20), transparent 68%),
    radial-gradient(50% 50% at 20% 80%, rgba(201,242,90,.10), transparent 70%);
}
.half--aigc .half__bg::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(237,234,226,.14) .7px, transparent .7px);
  background-size:22px 22px;
  mask-image:radial-gradient(80% 80% at 60% 40%, #000 10%, transparent 75%);
  -webkit-mask-image:radial-gradient(80% 80% at 60% 40%, #000 10%, transparent 75%);
  opacity:.5;
}
.half__art{position:absolute;right:-6%;bottom:0;width:min(78%,720px);height:auto;opacity:.5;z-index:-1;pointer-events:none}
.half--aigc .half__art{opacity:.85}
.half__art .dot{animation:nodePulse 4s ease-in-out infinite}
@keyframes nodePulse{0%,100%{opacity:.25}50%{opacity:.9}}

.hero__seam{
  position:absolute;top:0;bottom:0;left:50%;width:1px;z-index:2;pointer-events:none;
  background:linear-gradient(to bottom, transparent, rgba(21,21,15,.18) 12%, rgba(21,21,15,.18) 88%, transparent);
}
.hero__seam::after{
  content:"×";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--paper);color:var(--ink);font-size:.8rem;
  border:1px solid rgba(21,21,15,.16);
}

.half__top{display:flex;justify-content:space-between;align-items:baseline;gap:16px;position:relative;z-index:3}
.tk{font-family:var(--mono);font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;opacity:.62}
.tk--accent{color:var(--accent);opacity:1}

.half__mid{margin-top:auto;margin-bottom:auto;position:relative;z-index:3;padding:clamp(20px,4vh,60px) 0}
.half__cn{
  margin:0;font-size:clamp(64px,10.5vw,168px);line-height:.86;font-weight:600;
  letter-spacing:.02em;
}
.half--arch .half__cn{color:var(--arch)}
.half--aigc .half__cn{
  background:linear-gradient(100deg,#F2FFC8 0%,var(--lime) 32%,#A7E6FF 62%,var(--violet) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 34px rgba(139,124,255,.22));
}
.half__en{
  margin-top:10px;font-family:var(--mono);font-size:clamp(.6rem,1.05vw,.78rem);
  letter-spacing:.42em;text-transform:uppercase;opacity:.6;
}
.half--aigc .half__en{opacity:.75;color:var(--violet)}
.half__desc{
  margin:clamp(16px,3vh,30px) 0 0;max-width:34ch;font-size:clamp(.82rem,1.05vw,.95rem);
  line-height:1.85;opacity:.72;
}
.half__list{list-style:none;margin:clamp(18px,3.4vh,34px) 0 0;padding:0;display:grid;gap:0;max-width:360px;border-top:1px solid currentColor}
.half__list li{border-bottom:1px solid rgba(127,127,127,.22)}
.half--arch .half__list li{border-color:rgba(21,21,15,.13)}
.half--aigc .half__list li{border-color:rgba(237,234,226,.13)}
.half__list a{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:11px 2px;font-size:.8rem;letter-spacing:.04em;
  opacity:.46;transition:opacity .35s var(--ease),padding-left .45s var(--ease);
}
.half:hover .half__list a{opacity:.82}
.half__list a:hover{opacity:1;padding-left:8px}
.half__list a span{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;opacity:.7}

.half__cta{
  display:inline-flex;align-items:center;gap:14px;align-self:flex-start;position:relative;z-index:3;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.22em;text-transform:uppercase;
}
.half__cta::after{content:"";width:clamp(40px,6vw,88px);height:1px;background:currentColor;opacity:.4;transition:width .6s var(--ease)}
.half:hover .half__cta::after{width:clamp(70px,10vw,150px);opacity:.9}
.half__cta i{font-style:normal;transition:transform .5s var(--ease)}
.half:hover .half__cta i{transform:translateX(6px)}

/* page shell -------------------------------------------------- */
main{padding-top:var(--header);min-height:60svh}
body.theme-home main{padding-top:0}

.page{max-width:1640px;margin:0 auto;padding:clamp(34px,6vh,80px) var(--pad) clamp(60px,10vh,120px)}
.page-head{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(220px,.65fr);gap:clamp(24px,4vw,72px);align-items:end;padding-bottom:clamp(26px,4vh,46px);border-bottom:1px solid var(--line)}
.crumb{font-family:var(--mono);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:clamp(18px,3vh,32px);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.crumb a:hover{color:var(--fg)}
.crumb span{opacity:.45}
.page-title{
  margin:0;font-size:clamp(40px,6.4vw,96px);line-height:1.02;font-weight:600;letter-spacing:-.01em;
}
.page-title em{font-style:normal;color:var(--accent)}
.page-lede{margin:clamp(14px,2.4vh,24px) 0 0;max-width:44ch;font-size:clamp(.86rem,1.05vw,.98rem);line-height:1.9;opacity:.7}
.page-aside{justify-self:end;text-align:right;display:grid;gap:6px}
.page-head--wide{grid-template-columns:minmax(0,1fr) minmax(0,.28fr);gap:clamp(18px,2.4vw,36px)}
.page-head--wide .page-title{font-size:clamp(30px,4.4vw,66px);letter-spacing:0;line-height:1.08}
.page-head--wide .page-aside{align-self:end}
.page-aside .en{font-family:var(--mono);font-size:.6rem;letter-spacing:.24em;text-transform:uppercase;opacity:.45}
.page-aside .num{font-size:clamp(28px,3vw,44px);line-height:1;font-weight:500;letter-spacing:-.02em}

/* tabs -------------------------------------------------------- */
.tabs{
  position:sticky;top:var(--header);z-index:40;
  display:flex;gap:clamp(16px,2.6vw,40px);overflow-x:auto;scrollbar-width:none;
  padding:0;margin:0 0 clamp(24px,4vh,44px);
  background:var(--bg);border-bottom:1px solid var(--line);
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  position:relative;flex:0 0 auto;
  padding:18px 0 16px;font-size:.82rem;letter-spacing:.08em;
  opacity:.45;transition:opacity .3s var(--ease);white-space:nowrap;
}
.tab:hover{opacity:.85}
.tab.is-on{opacity:1}
.tab.is-on::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent)}
.tab small{font-family:var(--mono);font-size:.55rem;letter-spacing:.1em;opacity:.5;margin-left:7px}

/* gallery ----------------------------------------------------- */
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,1.8vw,30px)}
.gallery.is-wide{grid-template-columns:repeat(2,minmax(0,1fr))}
.gallery.is-audio{grid-template-columns:1fr;gap:12px}
.gallery.is-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(14px,1.8vw,24px)}
@media (max-width:1080px){.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.gallery,.gallery.is-wide,.gallery.is-links{grid-template-columns:1fr}}

.slot{min-width:0}
.slot__frame{
  position:relative;display:block;width:100%;aspect-ratio:4/3;overflow:hidden;
  background:var(--card);border:1px solid var(--line);
  transition:border-color .4s var(--ease),background-color .4s var(--ease),transform .5s var(--ease);
}
.gallery.is-wide .slot__frame{aspect-ratio:16/9}
.slot.is-filled .slot__frame:hover{border-color:var(--line-2)}
.slot__frame img,.slot__frame video{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease),opacity .6s var(--ease);opacity:0}
.slot.is-loaded .slot__frame img,.slot.is-loaded .slot__frame video{opacity:1}
.slot.is-filled .slot__frame:hover img,.slot.is-filled .slot__frame:hover video{transform:scale(1.035)}

.slot__empty{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  text-align:center;padding:18px;
  background-image:repeating-linear-gradient(45deg,transparent 0 9px,var(--line) 9px 10px);
  background-size:100% 100%;
}
.slot__empty::before,.slot__empty::after{
  content:"";position:absolute;width:14px;height:14px;border:1px solid var(--line-2);
}
.slot__empty::before{left:12px;top:12px;border-right:0;border-bottom:0}
.slot__empty::after{right:12px;bottom:12px;border-left:0;border-top:0}
.slot__num{font-family:var(--mono);font-size:clamp(1.5rem,2.2vw,2.1rem);letter-spacing:.06em;opacity:.3;line-height:1}
.slot__hint{font-family:var(--mono);font-size:.58rem;letter-spacing:.24em;text-transform:uppercase;opacity:.5}
.slot__file{font-family:var(--mono);font-size:.62rem;letter-spacing:.06em;opacity:.4;padding:2px 6px;border:1px dashed var(--line-2)}
.slot__copy{
  margin-top:4px;font-family:var(--mono);font-size:.55rem;letter-spacing:.12em;
  padding:3px 8px;border:1px solid var(--line-2);opacity:0;transform:translateY(4px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background-color .3s var(--ease);
}
.slot__empty:hover .slot__copy{opacity:1;transform:none}
.slot__copy:hover{background:var(--accent-soft)}

.slot__meta{display:flex;gap:12px;align-items:baseline;padding:11px 1px 0}
.slot__idx{font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;color:var(--muted);flex:0 0 auto;padding-top:2px}
.slot__meta h3{margin:0;font-size:.82rem;font-weight:500;letter-spacing:.02em;line-height:1.5}
.slot__meta p{margin:2px 0 0;font-size:.7rem;color:var(--muted);line-height:1.6}
.slot.is-empty .slot__meta h3{opacity:.55}
.slot.is-pending .slot__empty{animation:slotScan 1.1s ease-in-out infinite}
@keyframes slotScan{0%,100%{opacity:.85}50%{opacity:.45}}

/* ---------- 单张大图轮播（stage） ---------- */
.stage{margin-top:clamp(4px,1vh,10px)}
.stage__bar{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  padding-bottom:clamp(10px,1.4vh,16px);margin-bottom:clamp(16px,2.2vh,26px);
  border-bottom:1px solid var(--line-2);
}
.stage__lead{display:flex;align-items:baseline;gap:clamp(10px,1.4vw,18px);min-width:0}
.stage__idx{flex:none;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--muted);padding-bottom:.4em}
.stage__title{
  margin:0;min-width:0;
  font-size:clamp(24px,3.4vw,52px);font-weight:500;line-height:1.12;letter-spacing:.005em;
  text-wrap:balance;
}
.stage__side{flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:6px;text-align:right}
.stage__count{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em}
.stage__tip{font-family:var(--mono);font-size:.5rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}

.stage__track{position:relative}
.stage__slide{display:none}
.stage__slide.is-active{display:block;animation:stageIn .45s var(--ease)}
@keyframes stageIn{from{transform:translateY(6px)}to{transform:none}}
/* 大图：按素材原比例显示，绝不裁切；高度压在一屏内（顶沿与底沿同时可见） */
.stage{--imgCap:calc(100dvh - 300px)}
.stage .slot .slot__frame{
  aspect-ratio:auto;cursor:zoom-in;background:transparent;border:0;
  display:flex;align-items:center;justify-content:center;height:auto;
}
.stage .slot .slot__frame img,
.stage .slot .slot__frame video{
  width:auto;height:auto;max-width:100%;max-height:var(--imgCap);
  object-fit:contain;display:block;
}
.stage--compact{--imgCap:calc(100dvh - 380px)}
.stage__none{
  margin:0;padding:clamp(18px,3vh,30px) clamp(16px,2vw,24px);
  border:1px dashed var(--line-2);font-size:.8rem;line-height:1.9;color:var(--muted);
}
.stage__none b{display:block;margin-bottom:4px;font-weight:500;color:var(--fg);letter-spacing:.02em}
.stage__none code{font-family:var(--mono);font-size:.72em;background:var(--card);padding:2px 6px}
.stage .slot.is-empty .slot__frame,.stage .slot.is-pending .slot__frame{cursor:default;aspect-ratio:auto;height:clamp(240px,42vh,420px)}
.slot__dirpath{font-family:var(--mono);font-size:.52rem;letter-spacing:.08em;color:var(--muted);opacity:.75;word-break:break-all;max-width:82%}

.stage__ctrl{display:flex;align-items:center;gap:clamp(10px,1.4vw,20px);margin-top:clamp(12px,1.8vh,20px)}
.stage__nav{
  flex:none;width:clamp(44px,4vw,54px);height:clamp(44px,4vw,54px);
  display:grid;place-items:center;cursor:pointer;
  background:transparent;border:1px solid var(--line-2);color:var(--fg);
  font-size:1.05rem;line-height:1;
  transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.stage__nav:hover{background:var(--fg);border-color:var(--fg);color:var(--bg)}
.stage__nav:active{transform:translateY(1px)}
.stage__ticks{flex:1;display:flex;flex-wrap:wrap;justify-content:center;gap:4px}
.stage__tick{
  font-family:var(--mono);font-size:.56rem;letter-spacing:.1em;
  padding:6px 7px;background:transparent;border:1px solid transparent;color:var(--muted);
  cursor:pointer;transition:color .25s var(--ease),border-color .25s var(--ease);
}
.stage__tick:hover{color:var(--fg)}
.stage__tick.is-on{color:var(--fg);border-color:var(--line-2)}

@media (max-width:760px){
  .stage{--imgCap:calc(100dvh - 230px)}
  .stage--compact{--imgCap:calc(100dvh - 260px)}
  .stage__bar{flex-direction:column;align-items:flex-start;gap:8px}
  .stage__side{flex-direction:row;align-items:center;gap:12px}
  .stage__ticks{justify-content:flex-start}
  .stage__nav{width:44px;height:44px}
}

.gallery-note{
  margin:clamp(22px,3.4vh,36px) 0 0;padding:14px 16px;border-left:2px solid var(--accent);
  background:var(--card);font-size:.76rem;line-height:1.8;color:var(--muted);
}
.gallery-note span{
  display:block;font-family:var(--mono);font-size:.55rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--fg);opacity:.6;margin-bottom:5px;
}

.badge{position:absolute;left:10px;top:10px;z-index:2;font-family:var(--mono);font-size:.52rem;letter-spacing:.14em;text-transform:uppercase;padding:3px 7px;background:rgba(8,8,10,.62);color:#EDEAE2;backdrop-filter:blur(6px)}
.view{position:absolute;right:10px;bottom:10px;z-index:2;font-family:var(--mono);font-size:.52rem;letter-spacing:.14em;text-transform:uppercase;padding:4px 8px;background:rgba(8,8,10,.62);color:#EDEAE2;opacity:0;transform:translateY(4px);transition:.35s var(--ease)}
.slot.is-filled .slot__frame:hover .view{opacity:1;transform:none}
.play{position:absolute;inset:0;display:grid;place-items:center;z-index:1;pointer-events:none}
.play i{width:clamp(38px,4vw,54px);height:clamp(38px,4vw,54px);border-radius:50%;border:1px solid rgba(255,255,255,.55);display:grid;place-items:center;background:rgba(8,8,10,.28);backdrop-filter:blur(4px)}
.play i::after{content:"";width:0;height:0;border-left:9px solid #fff;border-top:6px solid transparent;border-bottom:6px solid transparent;margin-left:3px}

/* audio ------------------------------------------------------- */
.audio-row{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:18px;
  padding:16px 18px;border:1px solid var(--line);background:var(--card);
  transition:background-color .3s var(--ease),border-color .3s var(--ease);
}
.audio-row:hover{background:var(--card-hover)}
.audio-row .n{font-family:var(--mono);font-size:.68rem;opacity:.4;letter-spacing:.08em}
.audio-row .t{font-size:.86rem;line-height:1.5}
.audio-row .t small{display:block;font-family:var(--mono);font-size:.55rem;letter-spacing:.12em;color:var(--muted);margin-top:3px}
.audio-row audio{width:min(46vw,420px);height:34px;filter:grayscale(1) contrast(1.05)}
.audio-row.is-empty{opacity:.7}
.audio-row.is-empty .t{color:var(--muted)}
@media (max-width:720px){.audio-row{grid-template-columns:auto minmax(0,1fr)}.audio-row audio{grid-column:1/-1;width:100%}}

/* links ------------------------------------------------------- */
.link-card{
  display:flex;flex-direction:column;gap:14px;padding:clamp(18px,2.2vw,28px);
  border:1px solid var(--line);background:var(--card);min-height:200px;
  transition:background-color .35s var(--ease),border-color .35s var(--ease),transform .5s var(--ease);
}
.link-card:hover{background:var(--card-hover);border-color:var(--line-2)}
.link-card__top{display:flex;justify-content:space-between;align-items:center;gap:16px}
.link-card h3{margin:0;font-size:1rem;font-weight:500;letter-spacing:.02em}
.link-card__qr{width:96px;height:96px;border:1px dashed var(--line-2);display:grid;place-items:center;flex:0 0 96px;position:relative;overflow:hidden}
.link-card__qr span{font-family:var(--mono);font-size:.5rem;letter-spacing:.12em;opacity:.4;text-align:center;padding:4px}
.link-card__qr img{width:100%;height:100%;object-fit:contain;background:#fff}
.link-card p{margin:0;font-size:.76rem;line-height:1.75;color:var(--muted);flex:1}
.link-card__url{font-family:var(--mono);font-size:.6rem;letter-spacing:.04em;opacity:.5;word-break:break-all}
.link-card__go{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.58rem;letter-spacing:.16em;text-transform:uppercase;opacity:.55}
.link-card:hover .link-card__go{opacity:1}

/* 线上平台：大按钮 -------------------------------------------- */
.links{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:clamp(14px,1.8vw,20px)}
.link-big{
  display:flex;flex-direction:column;gap:10px;padding:clamp(18px,2.6vh,28px) clamp(20px,2.4vw,30px);
  border:1px solid var(--line-2);background:var(--card);text-decoration:none;color:inherit;
  transition:background-color .35s var(--ease),border-color .35s var(--ease),transform .35s var(--ease);
}
.link-big:hover{background:var(--card-hover);border-color:var(--fg);transform:translateY(-2px)}
.link-big__host{font-size:clamp(1.1rem,1.8vw,1.5rem);font-weight:500;letter-spacing:.01em}
.link-big__desc{font-size:.8rem;line-height:1.85;color:var(--muted);max-width:46ch}
.link-big__url{font-family:var(--mono);font-size:.6rem;letter-spacing:.02em;opacity:.45;word-break:break-all}
.link-big__go{
  margin-top:6px;align-self:flex-start;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;
  border-bottom:1px solid var(--fg);padding-bottom:3px;
}
.links-note{margin:clamp(16px,2.4vh,22px) 0 0;font-size:.72rem;line-height:1.8;color:var(--muted)}
.links-note code{font-family:var(--mono);font-size:.92em;background:var(--card);padding:2px 6px}
.links-empty{margin:0;padding:clamp(16px,2.6vh,24px);border:1px dashed var(--line-2);font-size:.8rem;color:var(--muted)}

/* arch overview ---------------------------------------------- */
.arch-hero{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,.97fr);gap:clamp(28px,5vw,72px);align-items:start}
.arch-hero__lead{display:flex;flex-direction:column;min-width:0}
.arch-hero__media{min-width:0}
.arch-hero .page-title{font-size:clamp(38px,6.4vw,102px)}
.arch-aside{margin:clamp(26px,4vh,46px) 0 0;display:flex;align-items:baseline;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:14px}
.arch-aside .en{font-family:var(--mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.arch-aside .num{font-family:var(--mono);font-size:.9rem;letter-spacing:.08em;opacity:.5}
@media (max-width:900px){.arch-hero{grid-template-columns:1fr;gap:clamp(22px,4vh,40px)}}

/* 十年生涯 · 工作重心变化（动画图表） ------------------------- */
.decade{--dc-fg:var(--ink);--dc-mut:var(--muted);--dc-line:var(--line-2);display:flex;flex-direction:column;min-width:0}
.decade__head{display:flex;align-items:flex-end;gap:clamp(14px,2vw,26px);padding-bottom:14px;border-bottom:1px solid var(--line)}
.decade__year{display:flex;align-items:baseline;gap:3px;flex:0 0 auto}
.decade__year b{font-size:clamp(34px,4.6vw,58px);font-weight:500;line-height:.9;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.decade__year i{font-style:normal;font-size:.62rem;letter-spacing:.12em;color:var(--dc-mut)}
.decade__phase{display:flex;flex-direction:column;gap:5px;min-width:0;flex:1 1 auto;padding-bottom:4px}
.decade__phase b{font-size:clamp(14px,1.5vw,19px);font-weight:500;letter-spacing:.02em}
.decade__phase span{font-size:.74rem;line-height:1.5;color:var(--dc-mut);display:block;max-width:34ch}
.decade__phase span.is-in{animation:dcFade .5s ease}
@keyframes dcFade{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}
.decade__replay{flex:0 0 auto;align-self:flex-start;font:inherit;font-size:.62rem;letter-spacing:.12em;color:var(--dc-mut);background:none;border:1px solid var(--line-2);border-radius:999px;padding:5px 11px;cursor:pointer;transition:color .2s,border-color .2s}
.decade__replay:hover{color:var(--dc-fg);border-color:var(--dc-fg)}
.decade__plot{margin:0;padding:clamp(6px,1.4vh,14px) 0 0;position:relative;cursor:crosshair;touch-action:pan-y}
.dc{display:block;width:100%;height:auto;overflow:visible}
.dc__hline{stroke:var(--dc-line);stroke-width:1;stroke-dasharray:3 7;opacity:.5}
.dc__hline--base{stroke-dasharray:none;opacity:.85}
.dc__tick{stroke:var(--dc-line);stroke-width:1.2;opacity:.85}
.dc__year,.dc__ytick{font-family:var(--mono);font-size:17px;fill:var(--dc-mut);opacity:.9}
.dc__year{text-anchor:middle}
.dc__ytick{text-anchor:end}
.dc__cursor{stroke:var(--dc-fg);stroke-width:1.6;stroke-dasharray:5 6;opacity:0;transition:opacity .3s}
.decade.is-scrubbing .dc__cursor{opacity:.4}
.dc__path{stroke:var(--c);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;opacity:.8;transition:opacity .28s,stroke-width .28s}
.dc__node{fill:var(--bg);stroke:var(--c);stroke-width:2.4;opacity:.5;transition:opacity .28s}
.dc__node.is-off{opacity:0}
.dc__dot{fill:var(--bg);stroke:var(--c);stroke-width:3.4;opacity:0;transition:opacity .18s}
.dc__line.is-hot .dc__path{opacity:1;stroke-width:3.6}
.dc__line.is-hot .dc__node{opacity:.9}
.dc__line.is-hot .dc__dot{opacity:1}
/* 沿曲线游走的粒子：进场后常亮，滚出视口自动停 */
.dc__sparks{pointer-events:none;opacity:0;transition:opacity 1s ease .25s}
.decade.is-live .dc__sparks{opacity:1}
.dc__spark{stroke:var(--bg);stroke-width:1.4}
.dc__spark-halo{filter:blur(2px)}
.decade__foot{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-top:clamp(10px,1.6vh,18px);border-top:1px solid var(--line);padding-top:12px}
.decade__legend{display:flex;flex-wrap:wrap;gap:8px 18px;min-width:0}
.dc__chip{display:inline-flex;align-items:center;gap:8px;font-size:.76rem;letter-spacing:.02em}
.dc__chip i{width:10px;height:10px;background:var(--c);display:block;border-radius:50%;flex:0 0 auto}
.dc__chip b{font-weight:500;font-variant-numeric:tabular-nums;color:var(--dc-mut);min-width:2.1em;text-align:right}
.decade__unit{font-family:var(--mono);font-size:.56rem;letter-spacing:.16em;color:var(--dc-mut);text-transform:uppercase;flex:0 0 auto}
.decade__phases{display:flex;gap:clamp(10px,1.6vw,22px);margin-top:12px;flex-wrap:wrap}
.decade__phases span{font-size:.62rem;letter-spacing:.1em;color:var(--dc-mut);opacity:.55;position:relative;padding-bottom:6px;transition:opacity .3s,color .3s}
.decade__phases span::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.decade__phases span.is-on{opacity:1;color:var(--dc-fg)}
.decade__phases span.is-on::after{transform:scaleX(1)}
@media (max-width:900px){
  .decade__head{flex-wrap:wrap;align-items:flex-start}
  .decade__phase{order:3;flex:1 0 100%;padding-top:2px}
  .decade__phase span{max-width:none}
  .decade__replay{margin-left:auto}
  .decade__phases{display:none}
}

/* feature：一张大图 + 大字清单 -------------------------------- */
.feature{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(0,.78fr);gap:clamp(26px,4vw,64px);align-items:start}
.feature__media{min-width:0}
.feature__copy{min-width:0;border-top:1px solid var(--line-2);padding-top:16px}
.feature__label{
  margin:0 0 clamp(14px,2vh,22px);font-family:var(--mono);font-size:.58rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);
}
.feature__row{display:grid;grid-template-columns:4.6em minmax(0,1fr);gap:clamp(10px,1.4vw,20px);padding:clamp(12px,1.8vh,18px) 0;border-bottom:1px solid var(--line)}
.feature__row:last-child{border-bottom:0}
.feature__cat{font-size:clamp(.95rem,1.2vw,1.1rem);font-weight:600;letter-spacing:.08em;color:var(--fg);padding-top:2px}
.feature__items{display:flex;flex-direction:column;gap:7px}
.feature__items span{font-size:clamp(.92rem,1.24vw,1.16rem);line-height:1.5;letter-spacing:.01em;color:var(--fg);text-wrap:pretty}
.feature__items span::before{content:"— ";opacity:.3}
.gallery--single{grid-template-columns:1fr}
/* 施工图总览：按原图比例完整显示，不裁切 */
.slot--hero .slot__frame{
  aspect-ratio:auto;background:transparent;border:0;
  display:flex;align-items:center;justify-content:center;
}
.slot--hero .slot__frame img{
  width:auto;height:auto;max-width:100%;max-height:calc(100dvh - 300px);
  object-fit:contain;display:block;
}
@media (max-width:900px){
  .feature{grid-template-columns:1fr;gap:clamp(22px,4vh,36px)}
  .slot--hero .slot__frame img{max-height:none}
  .feature__row{grid-template-columns:4em minmax(0,1fr)}
}

.section-label{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin:clamp(48px,9vh,110px) 0 clamp(20px,3vh,34px);border-bottom:1px solid var(--line);padding-bottom:12px}
.section-label h2{margin:0;font-size:clamp(1.2rem,2vw,1.9rem);font-weight:500;letter-spacing:.02em}
.section-label span{font-family:var(--mono);font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}

.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
@media (max-width:820px){.module-grid{grid-template-columns:1fr}}
.module{
  position:relative;display:flex;flex-direction:column;gap:14px;
  padding:clamp(22px,3vw,40px);background:var(--bg);min-height:230px;
  transition:background-color .45s var(--ease);
}
.module::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .55s var(--ease)}
.module:hover{background:var(--card-hover)}
.module:hover::before{transform:scaleY(1)}
.module__top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.module__idx{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;color:var(--muted)}
.module__en{font-family:var(--mono);font-size:.55rem;letter-spacing:.2em;text-transform:uppercase;opacity:.35}
.module h3{margin:0;font-size:clamp(1.5rem,2.6vw,2.4rem);font-weight:500;line-height:1.1;letter-spacing:.02em}
.module p{margin:0;font-size:.8rem;line-height:1.8;color:var(--muted);max-width:40ch}
.module__foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.module__count{font-family:var(--mono);font-size:.56rem;letter-spacing:.12em;color:var(--muted)}
.module__cta{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;
  padding:8px 15px;border:1px solid var(--line-2);border-radius:999px;
  transition:background-color .45s var(--ease),border-color .45s var(--ease),color .45s var(--ease);
}
.module__cta i{font-style:normal;transition:transform .45s var(--ease)}
.module:hover .module__cta{background:var(--accent);border-color:var(--accent);color:#0B0B0C}
.module:hover .module__cta i{transform:translateX(4px)}

/* aigc overview ---------------------------------------------- */
.aigc-hero{position:relative;padding:clamp(60px,12vh,140px) 0 clamp(24px,4vh,50px);border-bottom:1px solid var(--line);overflow:hidden}
.aigc-hero::before{content:"";position:absolute;inset:-40% -10% auto auto;width:70%;height:160%;background:radial-gradient(closest-side,rgba(139,124,255,.20),transparent 70%);pointer-events:none}
.aigc-hero .page-title{font-size:clamp(52px,9vw,150px);line-height:.94}
.aigc-hero .page-title span{display:inline-block;background:linear-gradient(100deg,#F2FFC8,var(--lime) 38%,#9BE4FF 66%,var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.aigc-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(30px,5vh,60px)}
@media (max-width:980px){.aigc-cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.aigc-cards{grid-template-columns:1fr}}
.aigc-cards .module{min-height:210px}

/* twin ------------------------------------------------------- */
.twin{
  position:relative;margin-top:clamp(24px,4vh,40px);padding:clamp(24px,4vw,52px);
  border:1px solid var(--line);overflow:hidden;
  background:
    radial-gradient(70% 120% at 85% 10%, rgba(139,124,255,.22), transparent 62%),
    radial-gradient(60% 90% at 10% 100%, rgba(201,242,90,.10), transparent 66%),
    var(--night-2);
  color:#EDEAE2;
}
/* 左：启动面板 ｜ 右：界面预览 */
.twin--split{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:clamp(26px,3.6vw,56px);align-items:start;
}
.twin__panel{position:relative;min-width:0}
.twin__preview{position:relative;min-width:0;display:flex;align-items:flex-start;justify-content:center}
.twin__preview .stage{width:100%;--imgCap:calc(100dvh - 340px)}
.twin__preview .stage__bar{border-bottom-color:rgba(237,234,226,.18)}
.twin__preview .stage__title{font-size:clamp(15px,1.5vw,20px);color:#EDEAE2}
.twin__preview .stage__count,.twin__preview .stage__tip,.twin__preview .stage__idx{color:#8B8A82}
.twin__preview .stage__tip{display:none}
.twin__preview .slot .slot__frame img{border:1px solid rgba(237,234,226,.14)}
.twin__preview .stage__nav{border-color:rgba(237,234,226,.24);color:#EDEAE2}
.twin__preview .stage__nav:hover{background:#EDEAE2;color:var(--night-2);border-color:#EDEAE2}
.twin__preview .stage__tick{color:#8B8A82}
.twin__preview .stage__tick.is-on{color:#EDEAE2;border-color:rgba(237,234,226,.3)}
.twin__noimg{
  width:100%;padding:clamp(20px,3vh,32px);border:1px dashed rgba(237,234,226,.22);
  font-size:.74rem;line-height:1.9;color:#8B8A82;
}
.twin__noimg p{margin:0}
.twin__noimg code{display:inline-block;margin:6px 0;padding:4px 8px;background:rgba(255,255,255,.05);font-family:var(--mono);font-size:.7em;word-break:break-all}
@media (max-width:980px){
  .twin--split{grid-template-columns:1fr}
  .twin__preview{order:-1}
  .twin__preview .stage{--imgCap:calc(100dvh - 300px)}
}
.twin__grid{position:absolute;inset:0;background-image:linear-gradient(rgba(237,234,226,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(237,234,226,.05) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(80% 80% at 50% 40%,#000,transparent 78%);pointer-events:none}
.twin__head{position:relative;display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.twin__status{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(237,234,226,.24);padding:6px 13px;font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;border-radius:999px;white-space:nowrap}
.twin__status i{width:6px;height:6px;border-radius:50%;background:#8B8A82;transition:background-color .4s}
.twin__status.is-live i{background:var(--lime);box-shadow:0 0 12px rgba(201,242,90,.8)}
.twin__status.is-down i{background:var(--clay)}
.twin h2{margin:18px 0 0;font-size:clamp(1.8rem,4vw,3.4rem);line-height:1.1;font-weight:500;letter-spacing:.02em}
.twin p.lede{position:relative;margin:14px 0 0;max-width:52ch;font-size:.86rem;line-height:1.9;color:#B9B6AC}
.twin__actions{position:relative;display:flex;gap:12px;flex-wrap:wrap;margin-top:clamp(22px,3.4vh,34px)}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:13px 22px;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;
  border:1px solid var(--line-2);transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--lime);color:#0A0A0C;border-color:var(--lime)}
.btn--primary:hover{background:#DBFF7C}
.btn--ghost{color:#EDEAE2;border-color:rgba(237,234,226,.34)}
.btn--ghost:hover{background:rgba(237,234,226,.1)}
.twin__steps{position:relative;margin:clamp(26px,4vh,40px) 0 0;padding:0;list-style:none;display:grid;gap:10px;border-top:1px solid rgba(237,234,226,.14);padding-top:clamp(18px,3vh,26px)}
.twin__steps li{display:grid;grid-template-columns:26px 1fr;gap:12px;font-size:.78rem;line-height:1.8;color:#B9B6AC}
.twin__steps b{font-family:var(--mono);font-size:.58rem;color:var(--lime);letter-spacing:.1em;padding-top:3px}
.twin__path{position:relative;margin-top:16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-family:var(--mono);font-size:.6rem;letter-spacing:.02em;color:#8B8A82;word-break:break-all}
.twin__path code{background:rgba(255,255,255,.05);border:1px solid rgba(237,234,226,.12);padding:6px 10px;font-family:inherit}

/* guide ------------------------------------------------------ */
.guide-table{width:100%;border-collapse:collapse;margin-top:clamp(20px,3vh,32px);font-size:.78rem}
.guide-table th{text-align:left;font-family:var(--mono);font-size:.55rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:400;padding:0 12px 10px 0;border-bottom:1px solid var(--line-2)}
.guide-table td{padding:12px 12px 12px 0;border-bottom:1px solid var(--line);vertical-align:top}
.guide-table td.path{font-family:var(--mono);font-size:.66rem;letter-spacing:.02em;opacity:.8;word-break:break-all}
.guide-table td.num{font-family:var(--mono);font-size:.7rem;color:var(--muted);white-space:nowrap}
.guide-table .done{color:var(--accent)}
.guide-note{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(28px,5vh,48px)}
@media (max-width:820px){.guide-note{grid-template-columns:1fr}}
.guide-note > div{background:var(--bg);padding:clamp(16px,2vw,24px)}
.guide-note h3{margin:0 0 8px;font-size:.86rem;font-weight:500}
.guide-note p{margin:0;font-size:.75rem;line-height:1.8;color:var(--muted)}
.guide-note code{font-family:var(--mono);font-size:.68rem;background:var(--accent-soft);padding:1px 5px}

/* footer ----------------------------------------------------- */
.footer{border-top:1px solid var(--line);padding:clamp(28px,5vh,54px) var(--pad);margin-top:clamp(40px,8vh,90px)}
body.theme-home .footer{display:none}
.footer__in{max-width:1640px;margin:0 auto;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.footer__name{font-size:clamp(1.4rem,2.4vw,2.2rem);font-weight:500;letter-spacing:.02em;line-height:1.2}
.footer__meta{display:grid;gap:4px;font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);text-align:right}
.footer__contact{display:flex;gap:18px;flex-wrap:wrap;font-size:.72rem;color:var(--muted);margin-top:10px}
.footer__contact b{font-weight:400;color:var(--fg);opacity:.75}

/* lightbox --------------------------------------------------- */
.lb{position:fixed;inset:0;z-index:200;display:none;place-items:center;background:rgba(6,6,8,.96);backdrop-filter:blur(6px);padding:clamp(16px,4vw,56px)}
.lb.is-open{display:grid;animation:lbIn .35s var(--ease)}
@keyframes lbIn{from{opacity:0}to{opacity:1}}
.lb__stage{margin:0;max-width:min(1400px,92vw);max-height:82vh;display:grid;place-items:center}
.lb__stage img,.lb__stage video{max-width:100%;max-height:82vh;width:auto;height:auto;object-fit:contain;box-shadow:0 30px 90px rgba(0,0,0,.6)}
.lb__cap{position:absolute;left:0;right:0;bottom:clamp(14px,3vh,26px);text-align:center;color:rgba(237,234,226,.66);font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;padding:0 70px}
.lb__close{position:absolute;right:clamp(14px,3vw,32px);top:clamp(14px,3vw,28px);width:42px;height:42px;border:1px solid rgba(255,255,255,.24);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:.85rem;transition:background-color .3s}
.lb__close:hover{background:rgba(255,255,255,.12)}
.lb__nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:1.3rem;transition:background-color .3s}
.lb__nav:hover{background:rgba(255,255,255,.12)}
.lb__nav--prev{left:clamp(8px,2vw,26px)}
.lb__nav--next{right:clamp(8px,2vw,26px)}
@media (max-width:640px){.lb__nav{display:none}}

/* toast ------------------------------------------------------ */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);z-index:300;
  background:#15150F;color:#F4F1E9;padding:11px 20px;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease),transform .3s var(--ease);
  max-width:min(90vw,560px);text-align:center;
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* empty state ------------------------------------------------ */
.empty-state{padding:clamp(40px,8vh,90px) 0;text-align:center;color:var(--muted);border:1px dashed var(--line-2)}
.empty-state p{margin:6px 0;font-size:.8rem}

/* transitions on route --------------------------------------- */
.rise{animation:rise .8s var(--ease) both}
.rise-2{animation:rise .8s .08s var(--ease) both}
.rise-3{animation:rise .8s .16s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* responsive ------------------------------------------------- */
@media (max-width:900px){
  .page-head{grid-template-columns:1fr;gap:18px}
  .page-aside{justify-self:start;text-align:left;display:flex;gap:16px;align-items:baseline}
  .arch-hero{grid-template-columns:1fr}
  .nav__link{font-size:.74rem}
}
@media (max-width:760px){
  :root{--header:58px}
  .topbar{gap:12px}
  .brand__txt i{display:none}
  .progress{padding:4px 10px;font-size:.55rem}
  .nav{gap:14px}
  .nav__num{display:none}
  .nav__link{white-space:nowrap}
  .brand__txt b{white-space:nowrap;font-size:.82rem}
  .half{padding-top:calc(var(--header) + 26px)}
  .half__cn{font-size:clamp(56px,17vw,92px)}
  .hero{flex-direction:column;min-height:auto}
  .hero__seam{display:none}
  .half{min-height:64svh;flex:1 1 auto}
  .half:hover{flex-grow:1}
  .hero:hover .half:not(:hover){opacity:1}
  .half__art{width:92%;opacity:.32}
  .half__list{display:none}
  .half__mid{margin-top:auto;margin-bottom:auto}
}
@media (max-width:520px){
  .footer__in{flex-direction:column;align-items:flex-start}
  .footer__meta{text-align:left}
  .twin__actions .btn{width:100%;justify-content:center}
  .brand__txt{display:none}
  .nav{gap:12px}
  .nav__link{font-size:.68rem;letter-spacing:.06em}
  .progress{padding:4px 8px;font-size:.5rem}
}

/* ---------- B站 视频（在线版） ---------- */
.slot.is-bili .slot__frame { padding: 0; background: #000; overflow: hidden; }
.slot.is-bili .bili {
  position: relative;
  width: min(100%, calc(var(--imgCap, 70vh) * 16 / 9));
  aspect-ratio: 16 / 9;
  background: #000;
}
.slot.is-bili .bili iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.slot.is-bili .bili-open {
  position: absolute; left: 12px; bottom: 12px; z-index: 4;
  font-size: .64rem; letter-spacing: .06em; text-decoration: none;
  color: #EDEAE2; background: rgba(0, 0, 0, .62);
  padding: 5px 10px; border-radius: 999px;
  opacity: 0; transition: opacity .18s ease;
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.slot.is-bili .slot__frame:hover .bili-open { opacity: 1; }
.slot.is-bili .bili-open:hover { background: rgba(0, 0, 0, .85); }
.slot.is-bili .slot__frame { cursor: default; }
.slot.is-bili .badge { display: none; }