/* ============================================================
   IM 数据站 · 共享外壳与基础组件
   高原夜幕下的数据竞技场
   ============================================================ */

:root {
  --ink-900: #0B1230;
  --ink-800: #0E1638;
  --panel: #141C42;
  --panel-2: #1A2450;
  --line: #2A3563;
  --line-soft: rgba(42, 53, 99, 0.55);
  --paper: #F3EEE2;
  --paper-dim: #D9D3C6;
  --cyan: #35E6D0;
  --magenta: #FF3D8A;
  --gold: #E8B04B;
  --cinnabar: #C8402F;
  --mist: #9AA6C8;
  --green: #6FE39B;

  --rail-w: 96px;
  --edge-h: 52px;
  --dock-h: 58px;

  --radius: 2px;
  --slant: 8deg;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Heiti SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", monospace;

  --shadow-panel: 0 22px 48px -26px rgba(0, 0, 0, 0.92);
  --ease: cubic-bezier(0.22, 0.68, 0.24, 1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(0deg, rgba(243, 238, 226, 0.017) 0 1px, transparent 1px 3px),
    linear-gradient(rgba(42, 53, 99, 0.32) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 53, 99, 0.32) 1px, transparent 1px),
    radial-gradient(circle at 8% -6%, rgba(53, 230, 208, 0.11), transparent 46%),
    radial-gradient(circle at 96% 6%, rgba(255, 61, 138, 0.10), transparent 44%);
  background-size: 100% 100%, 48px 48px, 48px 48px, 100% 100%, 100% 100%;
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: calc(var(--dock-h) + 12px);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
#main-content { display: block; outline: none; }

::selection { background: rgba(53, 230, 208, 0.28); color: var(--paper); }

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

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  transform: translateY(-180%);
  padding: 10px 20px;
  background: var(--cyan);
  color: #04121A;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: none; }

/* ============================================================
   顶部细条
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.edge-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--edge-h);
  padding: 0 16px;
  background: linear-gradient(90deg, rgba(20, 28, 66, 0.97), rgba(11, 18, 48, 0.93));
  border-bottom: 1px solid var(--line);
  box-shadow: 0 10px 30px -26px rgba(0, 0, 0, 1);
}

.edge-bar__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  text-decoration: none;
  color: var(--paper);
}

.edge-bar__mark {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-900);
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  padding: 2px 7px;
  border-radius: 1px;
}

.edge-bar__wordmark {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--paper-dim);
}

.edge-bar__meta {
  display: inline-flex;
  align-items: center;
  gap: 0;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(111, 227, 155, 0.16);
}

.edge-bar__cta {
  display: none;
  padding: 8px 16px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(42, 53, 99, 0.5);
  overflow: hidden;
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  transform: scaleX(0);
  transform-origin: left center;
}

/* ============================================================
   品牌轨道
   ============================================================ */
.brand-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(84vw, 320px);
  z-index: 96;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 20px 0 22px;
  background: linear-gradient(180deg, #141C42 0%, #0B1230 68%, #0A1029 100%);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(-102%);
  transition: transform 0.36s var(--ease);
}

.site-header[data-open="true"] .brand-rail { transform: none; }

.brand-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 64px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

.brand-rail__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  flex: none;
}

.brand-rail__logo-mark {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--paper);
  padding: 12px 13px 16px;
  background: linear-gradient(155deg, rgba(53, 230, 208, 0.18), rgba(255, 61, 138, 0.13) 62%, rgba(232, 176, 75, 0.12));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 50% 100%, 0 76%);
}

.brand-rail__logo-caption {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--mist);
  text-indent: 0.3em;
}

.rail-region {
  width: 100%;
  flex: none;
  padding: 13px 8px 15px;
  text-align: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(53, 230, 208, 0.08), rgba(53, 230, 208, 0));
}

.rail-region__label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--mist);
  text-indent: 0.3em;
}

.rail-region__value {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.rail-region__stage {
  margin-top: 5px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.rail-region__link {
  display: inline-block;
  margin-top: 9px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  text-decoration: none;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.rail-region__link:hover { color: var(--magenta); border-bottom-color: var(--magenta); }

.rail-nav { width: 100%; flex: none; }
.rail-nav__list { display: flex; flex-direction: column; gap: 2px; }

.rail-nav__link {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  text-decoration: none;
  color: var(--paper-dim);
  border-left: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.rail-nav__link:hover { color: var(--paper); background: rgba(42, 53, 99, 0.35); }

.rail-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-left-color: var(--magenta);
  background: linear-gradient(90deg, rgba(255, 61, 138, 0.16), rgba(255, 61, 138, 0));
}

.rail-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--gold);
  flex: none;
}

.rail-nav__link[aria-current="page"] .rail-nav__index { color: var(--magenta); }

.rail-nav__text {
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.rail-action {
  margin-top: auto;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - 32px);
  padding: 11px 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-align: center;
  text-decoration: none;
  color: var(--cyan);
  background: rgba(53, 230, 208, 0.09);
  border: 1px solid rgba(53, 230, 208, 0.36);
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.rail-action:hover { background: rgba(53, 230, 208, 0.2); border-color: var(--cyan); color: var(--paper); }

/* 抽屉遮罩 */
.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 89;
  background: rgba(5, 9, 24, 0.7);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
.site-header[data-open="true"] .rail-scrim { opacity: 1; pointer-events: auto; }

/* ============================================================
   移动底栏
   ============================================================ */
.dock-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 95;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: calc(var(--dock-h) + env(safe-area-inset-bottom, 0px));
  padding: 0 14px env(safe-area-inset-bottom, 0px);
  background: linear-gradient(90deg, rgba(20, 28, 66, 0.99), rgba(11, 18, 48, 0.97));
  border-top: 1px solid var(--line);
  box-shadow: 0 -12px 30px -24px rgba(0, 0, 0, 1);
}

.dock-bar__region { display: flex; align-items: baseline; gap: 8px; min-width: 0; }

.dock-bar__label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--mist);
}

.dock-bar__value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  white-space: nowrap;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  padding: 9px 15px;
  background: rgba(53, 230, 208, 0.1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle__bars { position: relative; width: 16px; height: 12px; flex: none; }

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  transition: transform 0.26s var(--ease), top 0.26s var(--ease), bottom 0.26s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.site-header[data-open="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars::after { bottom: 5px; transform: rotate(-45deg); }
.site-header[data-open="true"] .nav-toggle { border-color: var(--magenta); color: var(--magenta); }
.site-header[data-open="true"] .nav-toggle__bars::before,
.site-header[data-open="true"] .nav-toggle__bars::after { background: var(--magenta); }

/* ============================================================
   桌面布局
   ============================================================ */
@media (min-width: 900px) {
  body {
    padding-left: var(--rail-w);
    padding-bottom: 0;
  }

  .edge-bar {
    gap: 20px;
    padding-left: calc(var(--rail-w) + 30px);
    padding-right: 30px;
  }

  .edge-bar__brand { display: none; }
  .edge-bar__meta { margin-left: 0; }
  .edge-bar__cta { display: inline-flex; margin-left: auto; }
  .edge-bar__meta + .edge-bar__cta { margin-left: auto; }

  .brand-rail {
    top: var(--edge-h);
    bottom: 0;
    left: 0;
    width: var(--rail-w);
    padding: 20px 0 18px;
    gap: 14px;
    transform: none;
    transition: none;
    z-index: 90;
  }

  .rail-region { padding: 12px 6px 14px; }
  .rail-region__value { font-size: 17px; }

  .rail-nav__link {
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 9px 4px;
    border-left: none;
    border-top: 2px solid transparent;
    background: none;
    text-align: center;
  }
  .rail-nav__link:hover { background: rgba(42, 53, 99, 0.42); }
  .rail-nav__link[aria-current="page"] {
    border-top-color: var(--magenta);
    background: linear-gradient(180deg, rgba(255, 61, 138, 0.18), rgba(255, 61, 138, 0));
  }
  .rail-nav__text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-size: 11.5px;
    letter-spacing: 0.16em;
    line-height: 1.25;
  }
  .rail-nav__index { line-height: 1; }

  .rail-action {
    width: calc(100% - 16px);
    padding: 10px 4px;
    font-size: 10.5px;
    line-height: 1.5;
    letter-spacing: 0.06em;
  }

  .dock-bar,
  .rail-scrim { display: none; }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, #0E1638 0%, #0A1029 100%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--magenta) 34%, var(--gold) 62%, rgba(232, 176, 75, 0) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 30%, 0 100%);
}

.footer-inner {
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(36px, 5vw, 60px) clamp(18px, 4vw, 44px) 26px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
}

.footer-brand__logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-decoration: none;
}

.footer-brand__logo-sub {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--mist);
}

.footer-brand__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-archive {
  margin-top: 22px;
  padding: 16px 18px;
  background: rgba(20, 28, 66, 0.72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
  border-radius: var(--radius);
}

.footer-archive__title {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.footer-archive__note {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-archive__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 208, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.footer-archive__link:hover { color: var(--magenta); border-bottom-color: var(--magenta); }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 20px;
}

.footer-col__title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--gold);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.footer-col__list { margin-top: 12px; display: flex; flex-direction: column; gap: 9px; }

.footer-col__link {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}
.footer-col__link:hover { color: var(--cyan); padding-left: 4px; }

.footer-divider {
  height: 1px;
  margin: clamp(28px, 4vw, 46px) 0 22px;
  background: linear-gradient(90deg, var(--line), rgba(42, 53, 99, 0.1));
}

.footer-meta { display: flex; flex-direction: column; gap: 8px; }

.footer-meta__legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.footer-meta__contact {
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--paper-dim);
  word-break: break-word;
}

.footer-meta__hours {
  font-size: 12px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

@media (min-width: 760px) {
  .footer-cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .footer-top { grid-template-columns: minmax(260px, 330px) minmax(0, 1fr); }
}

/* ============================================================
   通用容器与排版
   ============================================================ */
.canvas {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 44px);
}

.section {
  position: relative;
  padding-block: clamp(44px, 6.5vw, 88px);
}

.section--band {
  background: linear-gradient(180deg, rgba(20, 28, 66, 0.88), rgba(11, 18, 48, 0.1));
  border-block: 1px solid var(--line-soft);
}

.section--slant { isolation: isolate; }

.section--slant::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(160deg, rgba(20, 28, 66, 0.92), rgba(11, 18, 48, 0));
  clip-path: polygon(0 0, 100% 4vw, 100% 100%, 0 100%);
}

.section-head { display: flex; flex-direction: column; gap: 14px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gold);
}

.display-title {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
  margin: 0;
}

.lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.8;
  color: var(--paper-dim);
}

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.25em; color: var(--paper-dim); }
.prose p:last-child { margin-bottom: 0; }
.prose h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.2; letter-spacing: -0.01em; margin: 1.8em 0 0.6em; color: var(--paper); }
.prose h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); margin: 1.6em 0 0.5em; color: var(--paper); }
.prose ul, .prose ol { margin: 0 0 1.25em 0; padding-left: 1.2em; color: var(--paper-dim); }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 16px; margin-bottom: 0.5em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 6px; height: 6px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.prose ol { list-style: decimal; }
.prose ol li { margin-bottom: 0.5em; }
.prose a { color: var(--cyan); }

.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* ---------- 栅格 ---------- */
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1040px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 面板 ---------- */
.panel {
  position: relative;
  background: linear-gradient(165deg, var(--panel), var(--ink-800));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.6vw, 28px);
}

.panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 54px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(53, 230, 208, 0));
}

.panel--float {
  box-shadow: var(--shadow-panel);
  transform: translateY(0);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.panel--float:hover { transform: translateY(-3px); border-color: rgba(53, 230, 208, 0.5); }

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.panel__title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.panel__body { margin-top: 14px; }

/* ---------- 指标 ---------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-800);
}

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--cyan);
}

.stat__value--warm { color: var(--gold); }
.stat__value--hot { color: var(--magenta); }

.stat__label {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.6;
  border-radius: 1px;
  border: 1px solid currentColor;
  color: var(--mist);
  white-space: nowrap;
}
.tag--cyan { color: var(--cyan); }
.tag--magenta { color: var(--magenta); }
.tag--gold { color: var(--gold); }
.tag--cinnabar { color: var(--cinnabar); background: rgba(200, 64, 47, 0.12); }
.tag--green { color: var(--green); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.4;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.btn--primary { background: var(--magenta); color: #14030B; border-color: var(--magenta); }
.btn--primary:hover { background: #FF6BA4; border-color: #FF6BA4; transform: translateY(-1px); }

.btn--ghost { background: transparent; color: var(--paper); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--quiet { background: rgba(53, 230, 208, 0.1); color: var(--cyan); border-color: rgba(53, 230, 208, 0.38); }
.btn--quiet:hover { background: rgba(53, 230, 208, 0.2); border-color: var(--cyan); color: var(--paper); }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-block: 18px 0; }

.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}

.breadcrumb__link { color: var(--mist); text-decoration: none; transition: color 0.2s; }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__current { color: var(--gold); }

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--panel-2), var(--ink-900));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  isolation: isolate;
}

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.86) contrast(1.04) brightness(0.82);
  transition: transform 0.6s var(--ease);
}

.media-frame:hover .media-frame__img { transform: scale(1.03); }

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(200deg, rgba(11, 18, 48, 0.62), rgba(11, 18, 48, 0.1) 52%, rgba(53, 230, 208, 0.12)),
    repeating-linear-gradient(0deg, rgba(11, 18, 48, 0.16) 0 1px, transparent 1px 4px);
}

.media-frame--slant { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%); }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  max-width: 90%;
  padding: 9px 14px;
  background: rgba(11, 18, 48, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
}

/* ---------- 技能树式路径 ---------- */
.path { position: relative; }

.path__list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 26px;
}

.path__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--magenta) 62%, rgba(232, 176, 75, 0.2));
}

.path__node {
  position: relative;
  padding: 16px 0 20px;
  border-bottom: 1px solid var(--line-soft);
}

.path__node::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 24px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 230, 208, 0.1);
}

.path__node:last-child { border-bottom: none; }

.path__index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.path__title {
  margin-top: 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.path__text {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 60ch;
}

/* ---------- 分隔 ---------- */
.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line), rgba(42, 53, 99, 0.08));
}

.divider--slant {
  height: 6px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta) 40%, var(--gold) 70%, rgba(232, 176, 75, 0));
  clip-path: polygon(0 0, 100% 0, 100% 30%, 0 100%);
}

/* ---------- 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.62s var(--ease),
    transform 0.62s var(--ease);
  transition-delay: calc(var(--reveal-order, 0) * 60ms);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  will-change: auto;
}

html:not([data-js]) [data-reveal] {
  opacity: 1;
  transform: none;
}

/* ============================================================
   降级与无障碍
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal],
  html:not([data-js]) [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .media-frame:hover .media-frame__img { transform: none; }
  .panel--float:hover { transform: none; }
  .btn--primary:hover { transform: none; }
}