:root {
  --bg: #070a0d;
  --paper: #e8dcc4;
  --paper-bright: #f6ecd4;
  --ink: #d8c8a8;
  --muted: rgba(216, 200, 168, 0.62);
  --line: rgba(212, 168, 90, 0.28);
  --gold: #d4a85a;
  --card: #12171c;
  --serif: "Songti SC", "Noto Serif SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --house-color: #6aa8c8;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; min-height: 100%;
  background: radial-gradient(ellipse at 50% 0%, #142028 0%, var(--bg) 55%);
  color: var(--ink);
  font-family: var(--sans);
}
.skip-link {
  position: absolute; left: -999px; top: 0;
}
.skip-link:focus { left: 12px; top: 12px; z-index: 99; background: #000; color: #fff; padding: 8px 12px; }

.rain-layer {
  pointer-events: none; position: fixed; inset: 0; opacity: .18;
  background-image: linear-gradient(120deg, transparent 40%, rgba(180,210,230,.08) 50%, transparent 60%);
  background-size: 6px 180px; animation: rain 8s linear infinite;
}
@keyframes rain { to { background-position: 40px 900px; } }

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 14px 22px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  background: rgba(7,10,13,.86); backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand-seal {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  border: 1px solid var(--line); color: var(--gold); font-family: var(--serif); font-weight: 700;
  background: linear-gradient(160deg, rgba(106,168,200,.18), rgba(0,0,0,.3));
}
.brand b { display: block; font-family: var(--serif); letter-spacing: .12em; }
.brand small { color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.street-nav { display: flex; gap: 14px; margin-left: auto; }
.street-nav a { color: var(--ink); text-decoration: none; font-size: 14px; opacity: .85; }
.street-nav a:hover { color: var(--gold); }
.top-status {
  display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted);
}
.top-status i {
  width: 8px; height: 8px; border-radius: 50%; background: #7dcea0;
  box-shadow: 0 0 10px #7dcea0;
}

.hero { padding: 28px 22px 48px; max-width: 1200px; margin: 0 auto; }
.hero-sky { position: absolute; inset: 0; pointer-events: none; opacity: .35; }
.hero-heading {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; margin-bottom: 28px;
}
.eyebrow { letter-spacing: .18em; color: var(--gold); font-size: 12px; margin: 0 0 10px; }
h1 {
  margin: 0; font-family: var(--serif); font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.2; color: var(--paper-bright);
}
h1 em { font-style: normal; color: var(--gold); }
.hero-aside p { color: var(--muted); line-height: 1.7; margin: 0 0 16px; }
.night-summary {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.night-summary span {
  min-width: 88px; padding: 10px 12px; border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08); background: rgba(0,0,0,.28);
}
.night-summary small { display: block; color: var(--muted); font-size: 11px; }
.night-summary b { font-family: var(--serif); font-size: 18px; color: var(--paper-bright); }

.case-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px;
}
.case-card {
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px; overflow: hidden;
  background: linear-gradient(180deg, rgba(24,32,40,.95), rgba(12,16,20,.98));
  box-shadow: 0 18px 40px rgba(0,0,0,.35);
  transition: transform .18s, border-color .18s;
}
.case-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--house-color), white 25%); }
.case-card button {
  width: 100%; border: 0; background: transparent; color: inherit;
  text-align: left; cursor: pointer; padding: 0; font: inherit;
}
.case-thumb {
  aspect-ratio: 3/2; background: #0a0e12 center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.case-body { padding: 14px 16px 16px; }
.case-index { margin: 0 0 6px; color: var(--gold); font-size: 12px; letter-spacing: .12em; }
.case-title {
  margin: 0 0 8px; font-family: var(--serif); font-size: 1.15rem;
  color: var(--paper-bright); line-height: 1.35;
}
.case-meta { margin: 0 0 8px; color: var(--muted); font-size: 12px; }
.case-lead { margin: 0 0 12px; color: rgba(232,220,196,.78); font-size: 13px; line-height: 1.55; min-height: 3.2em; }
.case-ju {
  display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 11px;
  border: 1px solid var(--line); color: var(--gold); margin-bottom: 12px;
}
.case-cta {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 10px; border-top: 1px solid rgba(255,255,255,.06);
  color: var(--paper-bright); font-size: 13px;
}
.case-cta em { font-style: normal; color: var(--gold); }

.reader {
  position: fixed; inset: 0; z-index: 40;
  display: flex; flex-direction: column;
  background: rgba(5,8,10,.96);
}
.reader.hidden { display: none; }
.reader-bar {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.progress { flex: 1; text-align: center; }
.progress-dots { display: flex; gap: 6px; justify-content: center; margin-top: 6px; }
.progress-dots i {
  width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.18);
}
.progress-dots i.on { background: var(--gold); }
.btn {
  border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.04);
  color: var(--ink); border-radius: 10px; padding: 8px 12px; cursor: pointer; font: inherit;
}
.btn.primary { border-color: color-mix(in srgb, var(--gold), transparent 40%); color: var(--gold); }
.btn.ghost { background: transparent; }
.stage-wrap {
  flex: 1; min-height: 0; display: grid; grid-template-columns: 48px 1fr 48px; align-items: center;
}
.page-stage {
  margin: 0; height: 100%; display: grid; place-items: center; padding: 8px;
}
.page-stage img {
  max-width: min(100%, 1400px); max-height: calc(100svh - 150px);
  object-fit: contain; border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.nav-btn {
  height: 100%; border: 0; background: transparent; color: var(--gold);
  font-size: 36px; cursor: pointer; opacity: .55;
}
.nav-btn:hover { opacity: 1; background: rgba(255,255,255,.03); }
.reader-footer {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.page-title { flex: 1; text-align: center; margin: 0; color: var(--muted); font-size: 13px; }

.lightbox {
  position: fixed; inset: 0; z-index: 60; background: rgba(0,0,0,.92);
  display: grid; place-items: center; padding: 20px;
}
.lightbox.hidden { display: none; }
.lightbox img { max-width: 100%; max-height: 90svh; object-fit: contain; }
.lightbox-close {
  position: absolute; top: 16px; right: 16px; border: 0; background: transparent;
  color: #fff; font-size: 32px; cursor: pointer;
}
.lightbox-hint { position: absolute; bottom: 16px; color: rgba(255,255,255,.5); font-size: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.site-footer {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 20px 22px 32px; color: var(--muted); font-size: 12px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.site-footer a { color: var(--gold); text-decoration: none; }

@media (max-width: 860px) {
  .hero-heading { grid-template-columns: 1fr; }
  .stage-wrap { grid-template-columns: 1fr; }
  .nav-btn { display: none; }
}

/* ── 实用资料速查 ── */
.practical {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 22px 12px;
}
.practical-head {
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 20px;
  margin-bottom: 18px;
  align-items: end;
}
.practical-lead {
  color: var(--muted);
  line-height: 1.7;
  margin: 10px 0 0;
  max-width: 46rem;
}
.practical h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: var(--paper-bright);
}
.pr-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.pr-tab {
  border: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.03);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.pr-tab.on {
  border-color: color-mix(in srgb, var(--gold), transparent 30%);
  color: var(--gold);
  background: rgba(212,168,90,.1);
}
.pr-panel {
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px;
  background: rgba(0,0,0,.22);
  margin-bottom: 16px;
}
.pr-panel.hidden { display: none; }
.pr-search-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pr-search-row input {
  flex: 1;
  min-width: 200px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.35);
  color: var(--paper-bright);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  font-size: 15px;
}
.pr-search-row input:focus {
  outline: 1px solid color-mix(in srgb, var(--gold), transparent 40%);
  border-color: color-mix(in srgb, var(--gold), transparent 40%);
}
.pr-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.pr-chip {
  border: 1px solid rgba(255,255,255,.1);
  background: rgba(106,168,200,.08);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
.pr-chip:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.pr-dual {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
}
.pr-dual label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.pr-dual select {
  min-width: 120px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.35);
  color: var(--paper-bright);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
}
.pr-plus {
  color: var(--gold);
  font-family: var(--serif);
  font-size: 18px;
  padding-bottom: 8px;
}
.pr-hint {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.pr-results { display: grid; gap: 18px; padding-bottom: 28px; }
.pr-empty {
  margin: 0;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed rgba(255,255,255,.1);
  border-radius: 14px;
}
.pr-result {
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(24,32,40,.92), rgba(10,14,18,.98));
  padding: 16px;
}
.pr-result-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}
.pr-result-head h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--paper-bright);
}
.pr-cat {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
}
.pr-combo-card {
  border: 1px solid rgba(212,168,90,.22);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 14px;
  background: rgba(212,168,90,.06);
}
.pr-combo-name {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--gold);
}
.pr-combo-text {
  margin: 0;
  line-height: 1.75;
  color: var(--paper-bright);
  font-size: 15px;
}
.pr-combo-key {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.pr-combo-key code {
  font-family: var(--serif);
  color: var(--ink);
}
.pr-summary-text {
  margin: 0;
  white-space: pre-wrap;
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(232, 220, 196, 0.9);
  max-height: 220px;
  overflow: auto;
}
/* 原書影像折迭（預設收合） */
.pr-fold {
  margin-top: 12px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  background: rgba(0,0,0,.22);
  overflow: hidden;
}
.pr-fold-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 11px 14px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-size: 13px;
  user-select: none;
}
.pr-fold-summary::-webkit-details-marker { display: none; }
.pr-fold-summary::before {
  content: "▸";
  color: var(--gold);
  margin-right: 8px;
  transition: transform .15s ease;
}
.pr-fold[open] > .pr-fold-summary::before {
  transform: rotate(90deg);
}
.pr-fold-summary span {
  font-family: var(--serif);
  color: var(--gold);
  letter-spacing: .06em;
}
.pr-fold-summary small {
  color: var(--muted);
  font-size: 12px;
}
.pr-fold-summary:hover {
  background: rgba(212,168,90,.06);
}
.pr-fold-body {
  padding: 0 12px 12px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.pr-pages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  padding-top: 12px;
}
.pr-page {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  background: #0a0e12;
}
.pr-page-btn {
  display: block;
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: zoom-in;
}
.pr-page img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}
.pr-page figcaption {
  padding: 8px 10px;
  font-size: 11px;
  color: var(--muted);
}

@media (max-width: 860px) {
  .practical-head { grid-template-columns: 1fr; }
}