@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:wght@400;500;600;700&family=Jost:wght@300;400;500;600;700&display=swap');

:root{
  --ink:#000000;
  --panel:#121212;
  --panel-up:#191919;
  --line:#2a2a2a;
  --line-soft:#1d1d1d;
  --text:#e9e9e9;
  --muted:#9b9b9b;
  --gold:#d7b271;
  --gold-dim:rgba(215,178,113,.34);
  --serif:'Bodoni Moda','Songti SC','Source Han Serif SC','SimSun',serif;
  --sans:'Jost',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}

html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--sans);
  font-size:1rem;
  line-height:1.68;
  letter-spacing:.01em;
  padding-bottom:150px;
}

h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:.01em}

img{max-width:100%;height:auto;display:block}

a{color:var(--gold)}

:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ---------- 底部胶囊导航 ---------- */
.masthead{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:50;
  display:flex;
  justify-content:center;
  padding:14px 16px;
  pointer-events:none;
}

.dock{
  pointer-events:auto;
  display:flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  background:rgba(18,18,18,.95);
  border:1px solid #2e2e2e;
  border-radius:999px;
  box-shadow:0 20px 46px rgba(0,0,0,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.dock-side{margin:0;display:flex;align-items:center;gap:4px}

.dock-link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 13px;
  border-radius:999px;
  color:var(--muted);
  text-decoration:none;
  font-size:.94rem;
  letter-spacing:.02em;
  transition:color .18s ease,background .18s ease;
}

.dock-link[aria-current]{color:var(--gold);background:rgba(215,178,113,.12)}

.dock-link:hover{color:#000;background:var(--gold)}

.dock-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:0 18px;
  color:#fff;
  text-decoration:none;
  font-family:var(--serif);
  font-size:1.05rem;
  letter-spacing:.22em;
  text-shadow:0 0 12px rgba(215,178,113,.5);
}

.brand-mark{width:auto;height:20px}

/* ---------- 骨架 ---------- */
.shell{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 272px;
  gap:56px;
  align-items:start;
}

.flow{min-width:0}

.flow > div{
  padding:44px 0;
  border-top:1px solid var(--line-soft);
}

.flow > div:first-child{border-top:0}

div[id]{scroll-margin-top:40px}

/* ---------- 首屏 ---------- */
.flow > .hero{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:44px;
  align-items:center;
  min-height:70vh;
  padding:26px 0 56px;
  border-top:0;
}

.kicker{
  margin:0 0 18px;
  font-size:.8rem;
  letter-spacing:.34em;
  color:var(--gold);
  text-shadow:0 0 10px rgba(215,178,113,.4);
}

h1{
  margin:0 0 22px;
  font-size:clamp(2.1rem,5.4vw,3.5rem);
  line-height:1.12;
  text-shadow:0 0 26px rgba(215,178,113,.22);
}

.hero-line{margin:0 0 18px;max-width:34ch;color:#cfcfcf;font-size:1.06rem}

.hero-note{
  margin:0;
  padding-left:12px;
  border-left:1px solid var(--gold);
  color:var(--muted);
  font-size:.9rem;
  letter-spacing:.06em;
}

.hero-art{position:relative;margin:0}

.hero-art img{box-shadow:0 26px 60px rgba(0,0,0,.95)}

.shot-a{width:76%;aspect-ratio:4/5;object-fit:cover;filter:brightness(.9)}

.shot-b{
  position:absolute;
  right:0;
  bottom:-30px;
  width:50%;
  aspect-ratio:3/4;
  object-fit:cover;
  border:1px solid var(--line);
}

.hero-art figcaption{
  margin-top:46px;
  color:var(--muted);
  font-size:.82rem;
  letter-spacing:.08em;
}

/* ---------- 引言块 ---------- */
.flow > .band{
  background:var(--panel);
  border:1px solid var(--line);
  padding:34px 30px;
  margin-bottom:10px;
  box-shadow:0 22px 50px rgba(0,0,0,.7);
}

.band-text{margin:0;color:#c9c9c9}

/* ---------- 正文排版 ---------- */
.flow h2{
  margin:0 0 .38em;
  font-size:clamp(1.4rem,3.2vw,1.95rem);
  line-height:1.28;
}

.subtitle{
  margin:0 0 1.5em;
  color:var(--muted);
  font-size:.95rem;
  letter-spacing:.05em;
}

.flow p{margin:0 0 1.15em;max-width:66ch}

.flow ul,.flow ol{margin:0 0 1.2em;padding-left:1.3em}

.flow li{margin:.4em 0}

.flow a{color:var(--gold);text-decoration:none;border-bottom:1px solid var(--gold-dim)}

.flow a:hover{border-bottom-color:var(--gold)}

.flow blockquote{
  margin:0 0 1.1em;
  padding:6px 0 6px 18px;
  border-left:2px solid var(--gold);
  font-family:var(--serif);
  font-size:1.12rem;
  color:#e4e4e4;
}

.flow figure{margin:0 0 1.4em}

.flow figcaption{margin-top:10px;color:var(--muted);font-size:.84rem}

.flow strong{color:#fff;font-weight:600}

.flow img{box-shadow:0 18px 42px rgba(0,0,0,.9)}

.tail-quote{margin:22px 0 0 !important}

/* ---------- 右侧索引 ---------- */
.rail{
  position:sticky;
  top:28px;
  margin-top:30px;
  padding:22px 20px;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:0 18px 44px rgba(0,0,0,.75);
}

.rail-title{
  margin:0 0 14px;
  font-family:var(--serif);
  font-size:1rem;
  letter-spacing:.18em;
  color:var(--gold);
}

.rail-list{list-style:none;margin:0 0 16px;padding:0}

.rail-list li{border-top:1px solid var(--line-soft)}

.rail-list a{
  display:flex;
  gap:10px;
  align-items:center;
  min-height:40px;
  padding:2px 0;
  color:#cfcfcf;
  text-decoration:none;
  font-size:.92rem;
}

.rail-list a:hover{color:var(--gold)}

.rail-list .num{color:var(--muted);font-size:.78rem;letter-spacing:.1em}

.rail-note{margin:0;color:var(--muted);font-size:.8rem;line-height:1.6}

/* ---------- 页脚 ---------- */
.base{
  max-width:1180px;
  margin:64px auto 0;
  padding:46px 24px 34px;
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:32px;
  border-top:1px solid var(--line);
}

.base > div{min-width:0}

.base-name{
  margin:0 0 10px;
  font-family:var(--serif);
  font-size:1.2rem;
  letter-spacing:.2em;
  color:#fff;
}

.base-desc{margin:0;color:var(--muted);font-size:.9rem;max-width:42ch}

.base-title{margin:0 0 10px;color:var(--gold);font-size:.8rem;letter-spacing:.24em}

.base-list{display:flex;flex-wrap:wrap;gap:2px 18px;margin:0}

.base-list a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--muted);
  text-decoration:none;
  font-size:.92rem;
}

.base-list a:hover{color:var(--gold)}

.base-meta{
  grid-column:1/-1;
  margin-top:16px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  text-align:center;
  color:var(--muted);
  font-size:.82rem;
  letter-spacing:.06em;
}

.base-meta p{margin:4px 0}

/* ---------- 断点 ---------- */
@media (max-width:980px){
  .shell{grid-template-columns:1fr;gap:0}
  .rail{position:static;margin:10px 0 0}
}

@media (max-width:820px){
  body{padding-bottom:190px}
  .masthead{padding:10px 10px}
  .dock{
    flex-wrap:wrap;
    justify-content:center;
    gap:4px 6px;
    padding:6px 8px;
    border-radius:22px;
    width:100%;
    max-width:430px;
  }
  .dock-side{flex:1 1 100%;justify-content:center;flex-wrap:wrap;gap:4px}
  .dock-brand{
    order:-1;
    flex:0 0 100%;
    justify-content:center;
    border-bottom:1px solid var(--line-soft);
    padding:0;
  }
  .dock-link{padding:0 10px;font-size:.86rem}
  .shell{padding:0 16px}
  .flow > .hero{grid-template-columns:1fr;gap:32px;min-height:0;padding:16px 0 42px}
  .hero-art{min-height:320px}
  .shot-a{width:82%}
  .shot-b{bottom:-22px}
  .hero-art figcaption{margin-top:36px}
  h1{font-size:clamp(1.9rem,8vw,2.6rem)}
  .flow > .band{padding:26px 20px}
  .base{grid-template-columns:1fr;padding:36px 16px 28px}
  .base-meta{margin-top:6px}
}

@media (max-width:420px){
  .dock-link{font-size:.84rem;padding:0 8px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .shot-a,.shot-b{transform:none !important}
}

button[aria-expanded]{min-width:44px;min-height:44px}