/* ============================================================
   base.css —— 结构层 + 科幻视觉体系 + 3D 体系 + 全端适配
   主题文件（theme-*.css）只覆盖 CSS 变量与签名装饰，不碰结构。

   科幻层组件速查：
     .hud          四角 HUD 括号 + 悬停霓虹描边
     .glow-text    渐变填充 + 外发光标题
     .shine        悬停流光扫过（按钮/卡片）
     .scan         扫描线覆层
     .floor        透视地网（Hero）
     .ic           SVG 图标（线性几何风）
     [data-reveal] 进入视口入场
   ============================================================ */

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

:root {
  --maxw: 1240px;
  --maxw-narrow: 860px;
  --gap: 24px;
  --radius: 14px;
  --radius-sm: 8px;
  --dur: .3s;
  --ease: cubic-bezier(.22,.61,.36,1);

  /* 3D 体系：由脚本根据设备能力整体调档，低端设备设为 0 */
  --3d: 1;                    /* 0 = 关闭全部 3D */
  --persp: 1000px;            /* 透视强度 */
  --lift: 10px;               /* 悬浮位移 */
  --tilt-max: 6deg;           /* 倾斜上限 */
  --parallax: 1;              /* 视差倍率 */

  /* 科幻装饰开关：1 = 启用 HUD / 扫描线 / 地网 */
  --hud: 1;
  --fx: 1;
}

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

/* 固定星云底：随主题变化，不随内容滚动 */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: var(--space-bg, var(--bg));
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  overflow-x: hidden;
}

img { max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: var(--accent); color: var(--on-accent); }

/* 滚动条（Webkit）也做成霓虹 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: var(--maxw-narrow); margin: 0 auto; padding: 0 28px; }

/* ============================================================
   科幻视觉原语
   ============================================================ */

/* 渐变发光文字 */
.glow-text {
  background: var(--accent-grad);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  text-shadow: 0 0 34px var(--accent-glow);
}

/* HUD 四角括号 + 悬停霓虹描边 */
.hud { position: relative; }
.hud::before {
  content: ""; position: absolute; inset: 7px; pointer-events: none;
  border-radius: 3px; opacity: calc(.42 * var(--hud));
  transition: opacity var(--dur) var(--ease);
  background-image:
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent));
  background-size: 13px 1.5px, 1.5px 13px, 13px 1.5px, 1.5px 13px, 13px 1.5px, 1.5px 13px, 13px 1.5px, 1.5px 13px;
  background-position: 0 0, 0 0, 100% 0, 100% 0, 0 100%, 0 100%, 100% 100%, 100% 100%;
  background-repeat: no-repeat;
}
.hud:hover::before { opacity: 1; }

/* 外发光描边：悬停时点亮 */
.glow-edge { transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease); }
.glow-edge:hover {
  border-color: var(--accent-line);
  box-shadow: 0 0 0 1px var(--accent-line), 0 0 34px -10px var(--accent-glow), var(--shadow);
}

/* 流光扫过（悬停触发，不改变布局，仅 background-position 动画） */
.shine { position: relative; overflow: hidden; }
.shine::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 34%, var(--shine-c, rgba(255,255,255,.16)) 50%, transparent 66%);
  background-size: 240% 100%; background-position: -60% 0;
  opacity: 0; transition: opacity .25s var(--ease);
}
.shine:hover::after { opacity: 1; animation: sweep 1.05s var(--ease); }
@keyframes sweep { from { background-position: -60% 0; } to { background-position: 160% 0; } }

/* 扫描线覆层 */
.scan { position: relative; }
.scan::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: repeating-linear-gradient(180deg, var(--scan-c, rgba(255,255,255,.045)) 0 1px, transparent 1px 4px);
  opacity: calc(.55 * var(--fx)); mix-blend-mode: overlay;
}

/* 脉冲点 */
.pulse-dot {
  width: 6px; height: 6px; border-radius: 50%; flex: none;
  background: var(--accent); box-shadow: 0 0 10px var(--accent-glow);
  animation: blip 2.6s ease-in-out infinite;
}
@keyframes blip { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.8); } }

/* 入场：进入视口后淡入上移 */
[data-reveal] { opacity: 0; transform: translate3d(0, 18px, 0); }
[data-reveal].in { opacity: 1; transform: none; transition: opacity .6s var(--ease), transform .6s var(--ease); }

/* SVG 图标（线性几何，未来感） */
.ic { width: 1em; height: 1em; display: inline-block; vertical-align: -.14em; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ============================================================
   3D 基础设施
   ============================================================ */

/* 透视容器：所有 3D 子元素的共同舞台 */
.persp { perspective: var(--persp); perspective-origin: 50% 50%; }
.persp-far { perspective: calc(var(--persp) * 2); }

/* 立体卡片：hover 时沿鼠标方向倾斜 + 抬升 */
.card3d {
  transform-style: preserve-3d;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .3s var(--ease);
  will-change: transform;
}
.card3d:hover {
  transform:
    translate3d(0, calc(var(--lift) * -0.6 * var(--3d)), calc(var(--lift) * var(--3d)))
    rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  box-shadow: var(--shadow-3d);
}

/* 卡片内部的分层元素，按 z 轴推开形成景深 */
.card3d .layer { transition: transform .45s var(--ease); transform: translateZ(0); }
.card3d:hover .layer-1 { transform: translateZ(calc(24px * var(--3d))); }
.card3d:hover .layer-2 { transform: translateZ(calc(42px * var(--3d))); }
.card3d:hover .layer-3 { transform: translateZ(calc(60px * var(--3d))); }

/* 悬浮动画（克制的呼吸感） */
@keyframes floaty {
  0%, 100% { transform: translate3d(0, calc(-4px * var(--3d)), 0); }
  50%      { transform: translate3d(0, calc(4px * var(--3d)), 0); }
}
.float { animation: floaty 6s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) { .float { animation: none; } }

/* 3D 立体按钮 —— 霓虹胶囊 */
.btn3d {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px; border-radius: 999px; border: 0; cursor: pointer;
  font: inherit; font-size: 15px; font-weight: 700; letter-spacing: .02em; color: var(--on-accent);
  background: var(--accent-grad);
  transform-style: preserve-3d; overflow: hidden;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), filter .22s var(--ease);
  box-shadow: 0 6px 0 var(--accent-deep), 0 14px 30px -10px var(--accent-glow);
}
.btn3d:hover { transform: translate3d(0, calc(-3px * var(--3d)), 0); text-decoration: none;
  box-shadow: 0 9px 0 var(--accent-deep), 0 22px 44px -12px var(--accent-glow), 0 0 30px -6px var(--accent-glow); }
.btn3d:active { transform: translate3d(0, 3px, 0); box-shadow: 0 2px 0 var(--accent-deep), 0 8px 18px -8px var(--accent-glow); }
.btn3d .ic { font-size: 17px; filter: drop-shadow(0 0 6px rgba(0,0,0,.35)); }

/* 视差层（Hero 背景） */
.parallax {
  position: absolute; will-change: transform;
  transform: translate3d(0, 0, 0) scale(1);
  transition: transform .12s linear;
}

/* 降级：脚本探测到低端设备 / 用户开启减少动效 / 触屏过窄 时挂上 .no-3d */
.no-3d .card3d:hover,
.no-3d .card3d { transform: none !important; box-shadow: none !important; }
.no-3d .card3d .layer,
.no-3d .card3d:hover .layer-1,
.no-3d .card3d:hover .layer-2,
.no-3d .card3d:hover .layer-3 { transform: none !important; }
.no-3d .float { animation: none !important; }
.no-3d .parallax { transform: none !important; transition: none !important; }
.no-3d .btn3d { box-shadow: 0 4px 14px -6px var(--accent-glow); }
.no-3d .btn3d:hover { transform: none; }
.no-3d .btn3d:active { transform: none; }
.no-3d .shine:hover::after { animation: none; }
.no-3d .floor { animation: none !important; }

/* ============================================================
   顶栏
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: saturate(170%) blur(16px); background: var(--bg-blur);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 var(--accent-line), 0 8px 30px -18px var(--accent-glow);
}
.topbar-inner { max-width: var(--maxw); margin: 0 auto; padding: 12px 28px; display: flex; align-items: center; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; white-space: nowrap; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  background: var(--accent-grad); display: grid; place-items: center;
  color: var(--on-accent); font-weight: 800; font-size: 15px; font-family: var(--font-mono);
  box-shadow: 0 0 20px -4px var(--accent-glow);
}
.brand-sub { font-size: 10.5px; font-weight: 500; color: var(--ink-3); letter-spacing: .16em; text-transform: uppercase; }

.nav { display: flex; gap: 2px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--ink-2); font-size: 13.5px; padding: 6px 11px; border-radius: 999px; transition: all var(--dur) var(--ease); white-space: nowrap; }
.nav a:hover { background: var(--bg-elev); color: var(--ink); text-decoration: none; box-shadow: inset 0 0 0 1px var(--line-strong); }
.nav a.active { background: var(--accent); color: var(--on-accent); box-shadow: 0 0 18px -4px var(--accent-glow); }

.theme-switch { display: flex; gap: 3px; padding: 3px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-elev); flex: none; flex-wrap: wrap; justify-content: flex-end; }
.theme-switch button { border: 0; background: transparent; color: var(--ink-3); font: inherit; font-size: 12px; padding: 5px 11px; border-radius: 999px; cursor: pointer; transition: all var(--dur) var(--ease); white-space: nowrap; font-family: var(--font-mono); }
.theme-switch button:hover { color: var(--ink); }
.theme-switch button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); font-weight: 600; box-shadow: 0 0 16px -4px var(--accent-glow); }

/* ============================================================
   章节与排版
   ============================================================ */
section.chapter { padding: 92px 0; border-top: 1px solid var(--line); position: relative; }
section.chapter:first-of-type { border-top: 0; }

.eyebrow {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px; display: flex; align-items: center; gap: 10px;
  text-shadow: 0 0 18px var(--accent-glow);
}
.eyebrow::after { content: ""; height: 1px; flex: 1; background: linear-gradient(90deg, var(--accent-line), transparent); max-width: 140px; }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.28; margin: 0 0 16px; letter-spacing: -.005em; }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(18px, 2vw, 23px); }
h4 { font-size: 16px; margin-bottom: 10px; }
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--ink-2); max-width: 78ch; }
.sec-head { max-width: 80ch; margin-bottom: 8px; }

/* ============================================================
   Hero（3D + 科幻重点区）
   ============================================================ */
.hero { padding: 104px 0 76px; position: relative; overflow: hidden; min-height: 78vh; display: flex; align-items: center; }
.hero-bg { position: absolute; inset: -20% -10%; z-index: 0; pointer-events: none; }
.hero-bg .orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.hero-bg .orb-1 { width: 46vw; height: 46vw; left: -6%; top: 4%; background: var(--orb-1); }
.hero-bg .orb-2 { width: 38vw; height: 38vw; right: -4%; top: 24%; background: var(--orb-2); }
.hero-bg .grid {
  position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(70% 60% at 50% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 40%, #000 0%, transparent 75%);
}
/* 透视地网：向地平线延伸的霓虹网格 */
.hero-bg .floor {
  position: absolute; left: -30%; right: -30%; bottom: -6%; height: 46%;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 68px 42px;
  transform: perspective(420px) rotateX(74deg);
  transform-origin: 50% 100%;
  mask-image: linear-gradient(transparent, #000 62%);
  -webkit-mask-image: linear-gradient(transparent, #000 62%);
  opacity: calc(.75 * var(--fx));
  animation: floorscroll 9s linear infinite;
}
@keyframes floorscroll { from { background-position: 0 0, 0 0; } to { background-position: 0 42px, 0 0; } }

.hero-inner { position: relative; z-index: 1; width: 100%; }
.hero h1 { font-size: clamp(36px, 6.2vw, 72px); margin-bottom: 22px; letter-spacing: -.03em; }
.hero h1 em { font-style: normal; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; text-shadow: 0 0 46px var(--accent-glow); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; align-items: center; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 52px; padding-top: 30px; border-top: 1px solid var(--line); }
.hero-stats div b { display: block; font-family: var(--font-display); font-size: clamp(22px, 2.6vw, 32px); font-weight: 700; letter-spacing: -.02em;
  background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats div span { font-size: 12.5px; color: var(--ink-3); }

/* Hero 侧边 3D 立体卡组 */
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-visual { position: relative; height: 400px; }
.hero-card {
  position: absolute; padding: 20px 22px; border-radius: var(--radius);
  border: 1px solid var(--accent-line); background: var(--bg-card);
  box-shadow: var(--shadow-3d); transform-style: preserve-3d;
  backdrop-filter: blur(10px);
}
.hero-card::before {
  content: ""; position: absolute; inset: 6px; pointer-events: none; border-radius: 3px; opacity: calc(.5 * var(--hud));
  background-image:
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)), linear-gradient(90deg, var(--accent), var(--accent));
  background-size: 12px 1.5px, 1.5px 12px, 12px 1.5px, 1.5px 12px;
  background-position: 0 0, 0 0, 100% 100%, 100% 100%;
  background-repeat: no-repeat;
}
.hero-card b { display: block; font-size: 24px; font-family: var(--font-display); letter-spacing: -.02em; }
.hero-card span { font-size: 12px; color: var(--ink-3); }
.hc-1 { left: 0; top: 8%; width: 62%; transform: rotateY(14deg) rotateX(6deg); }
.hc-2 { right: 0; top: 34%; width: 58%; transform: rotateY(-12deg) rotateX(-4deg); }
.hc-3 { left: 14%; bottom: 2%; width: 54%; transform: rotateY(8deg) rotateX(-8deg); }
.no-3d .hero-card { position: relative; transform: none; width: 100%; left: 0; right: 0; top: 0; bottom: 0; margin-bottom: 14px; }
.no-3d .hero-visual { height: auto; }

/* ============================================================
   能力线 3D 卡片
   ============================================================ */
.line-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gap); margin-top: 48px; }
.line-card {
  padding: 30px 28px 26px; border-radius: calc(var(--radius) + 2px);
  border: 1px solid var(--line); background: var(--bg-card);
  display: flex; flex-direction: column; gap: 12px; position: relative; overflow: hidden;
}
.line-card .ico {
  width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center; font-size: 26px;
  background: var(--accent-grad); color: var(--on-accent);
  box-shadow: 0 0 24px -6px var(--accent-glow);
}
.line-card .ico .ic { stroke-width: 1.5; filter: drop-shadow(0 0 5px rgba(0,0,0,.45)); }
.line-card h3 { margin: 6px 0 0; font-size: 20px; }
.line-card p { margin: 0; font-size: 13.8px; color: var(--ink-2); line-height: 1.72; }
.line-card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.line-card .go { margin-top: auto; padding-top: 16px; font-size: 13px; font-weight: 600; color: var(--accent); display: flex; align-items: center; gap: 6px; }
.line-card .go .ic { transition: transform var(--dur) var(--ease); }
.line-card:hover .go .ic { transform: translateX(4px); }

/* ============================================================
   全链路流程
   ============================================================ */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 34px 0 8px; position: relative; }
.flow-step { position: relative; padding: 22px 20px 22px 0; }
.flow-step + .flow-step { padding-left: 26px; }
.flow-step + .flow-step::before {
  content: ""; position: absolute; left: 0; top: 30px; width: 18px; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.flow-n { font-family: var(--font-mono); font-size: 11px; letter-spacing: .18em; color: var(--accent); font-weight: 700; text-shadow: 0 0 14px var(--accent-glow); }
.flow-step h4 { margin: 6px 0 8px; font-size: 16px; }
.flow-step ul { margin: 0; padding-left: 17px; font-size: 13px; color: var(--ink-2); line-height: 1.68; }
.flow-step li { margin-bottom: 5px; }
@media (max-width: 900px) {
  .flow { grid-template-columns: 1fr 1fr; gap: 8px 0; }
  .flow-step + .flow-step::before { display: none; }
  .flow-step { border-left: 2px solid var(--accent-line); padding-left: 16px !important; }
}
@media (max-width: 560px) { .flow { grid-template-columns: 1fr; } }

/* ============================================================
   统计 / 图表 / 面板
   ============================================================ */
.stat-grid { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); margin-top: 40px; }
.stat { padding: 26px 24px 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-card); display: flex; flex-direction: column; gap: 8px; position: relative; overflow: hidden; }
.stat-value { font-family: var(--font-display); font-size: clamp(28px, 3.6vw, 40px); font-weight: 700; line-height: 1.06; letter-spacing: -.02em; display: flex; align-items: baseline; gap: 4px;
  background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-value small { font-size: 15px; font-weight: 600; -webkit-text-fill-color: var(--ink-3); }
.stat-label { font-size: 14px; color: var(--ink-2); font-weight: 500; }
.stat-note { font-size: 12.5px; color: var(--ink-3); line-height: 1.62; margin-top: 2px; }
.stat-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: auto; padding-top: 12px; }
.src-link { font-size: 11.5px; color: var(--ink-3); display: inline-flex; align-items: center; gap: 4px; border-bottom: 1px dashed var(--line-strong); }
.src-link:hover { color: var(--accent); text-decoration: none; }

.chart { margin-top: 36px; display: flex; flex-direction: column; gap: 16px; }
.bar-row { display: grid; grid-template-columns: minmax(140px, 210px) 1fr auto; gap: 16px; align-items: center; font-size: 13.5px; }
.bar-label { color: var(--ink-2); font-weight: 500; }
.bar-track { height: 26px; border-radius: 6px; background: var(--bg-track); overflow: hidden; box-shadow: inset 0 0 0 1px var(--line); }
.bar-fill { height: 100%; border-radius: 6px; background: var(--accent-grad); width: 0; transition: width 1.1s var(--ease); display: flex; align-items: center; justify-content: flex-end; padding-right: 10px; min-width: 46px;
  box-shadow: 0 0 18px -4px var(--accent-glow); }
.bar-fill.alt { background: var(--accent-grad-2); }
.bar-val { font-family: var(--font-mono); font-size: 12px; font-weight: 600; color: var(--on-accent); white-space: nowrap; }
.bar-note { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); white-space: nowrap; min-width: 96px; text-align: right; }

.two-col { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); margin-top: 36px; }
.panel { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-card); }
.panel h3 { font-size: 17px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.panel h3 .ic { color: var(--accent); font-size: 19px; filter: drop-shadow(0 0 8px var(--accent-glow)); }
.panel ul { margin: 0; padding-left: 18px; font-size: 13.5px; color: var(--ink-2); }
.panel li { margin-bottom: 9px; line-height: 1.7; }
.panel li strong { color: var(--ink); }

.table-wrap { margin-top: 34px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 660px; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-elev); font-weight: 700; font-size: 12.5px; letter-spacing: .06em; color: var(--accent); font-family: var(--font-mono); text-transform: uppercase; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--bg-elev); }
td.num { font-family: var(--font-mono); font-weight: 600; white-space: nowrap; }
.strike { text-decoration: line-through; color: var(--ink-3); }

.callout { margin-top: 32px; padding: 20px 22px; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--bg-elev); border-left: 3px solid var(--accent); font-size: 14px; color: var(--ink-2);
  box-shadow: 0 0 30px -18px var(--accent-glow); }
.callout-warn { border-left-color: var(--warn); }
.callout-bad { border-left-color: var(--bad); }
.callout-ok { border-left-color: var(--ok); }
.callout-title { font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-family: var(--font-display); }
.callout-title .ic { color: var(--accent); }

/* 徽章 —— 胶囊 + 微光 */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 600; padding: 4px 11px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--ink-2); background: var(--bg-elev); white-space: nowrap; font-family: var(--font-mono); letter-spacing: .02em; }
.badge-verified { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 45%, transparent); background: color-mix(in srgb, var(--ok) 12%, transparent); box-shadow: 0 0 14px -6px var(--ok); }
.badge-partial { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); background: color-mix(in srgb, var(--warn) 12%, transparent); box-shadow: 0 0 14px -6px var(--warn); }
.badge-estimate { color: var(--ink-3); }
.badge-removed { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, transparent); background: color-mix(in srgb, var(--bad) 12%, transparent); box-shadow: 0 0 14px -6px var(--bad); }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 600; border: 1px solid var(--line-strong); color: var(--ink); background: var(--bg-elev); cursor: pointer; transition: all var(--dur) var(--ease); font-family: inherit; }
.btn:hover { transform: translateY(-1px); text-decoration: none; border-color: var(--accent-line); box-shadow: 0 0 22px -8px var(--accent-glow); }
.btn-ghost { background: transparent; }

/* 时间线 —— 霓虹轴 */
.timeline { margin-top: 40px; position: relative; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: var(--accent-grad); box-shadow: 0 0 14px var(--accent-glow); }
.tl-item { position: relative; padding-bottom: 26px; }
.tl-item::before { content: ""; position: absolute; left: -26px; top: 7px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); box-shadow: 0 0 14px -2px var(--accent-glow); }
.tl-date { font-family: var(--font-mono); font-size: 12px; color: var(--accent); font-weight: 700; letter-spacing: .06em; }
.tl-title { font-weight: 700; margin: 3px 0 5px; font-size: 15.5px; }
.tl-desc { font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }

/* 能力线 Tabs */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin: 32px 0 0; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-elev); width: fit-content; max-width: 100%; }
.tabs button { border: 0; background: transparent; color: var(--ink-3); font: inherit; font-size: 13.5px; font-weight: 600; padding: 9px 20px; border-radius: 999px; cursor: pointer; transition: all var(--dur) var(--ease); white-space: nowrap; display: inline-flex; align-items: center; gap: 7px; }
.tabs button .ic { font-size: 15px; }
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--on-accent); box-shadow: 0 0 20px -6px var(--accent-glow); }
.tab-panel { display: none; margin-top: 34px; }
.tab-panel.active { display: block; animation: fadeUp .45s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translate3d(0, 14px, 0); } to { opacity: 1; transform: none; } }
.no-3d .tab-panel.active { animation: none; }

/* 转化区（3D 重点） */
.convert {
  position: relative; overflow: hidden; border-radius: calc(var(--radius) + 6px);
  border: 1px solid var(--accent-line); background: var(--bg-card);
  padding: 56px 40px; text-align: center; margin-top: 20px;
  box-shadow: var(--shadow-3d); transform-style: preserve-3d;
}
.convert::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; background: var(--accent-grad); opacity: .09; pointer-events: none; }
.convert::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(70% 90% at 50% 0%, var(--accent-glow) 0%, transparent 62%);
  opacity: .22;
}
.convert h2 { max-width: 22ch; margin: 0 auto 14px; position: relative; }
.convert p { max-width: 62ch; margin: 0 auto; color: var(--ink-2); position: relative; }
.convert .hero-cta { justify-content: center; position: relative; }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 48px 0 60px; margin-top: 40px; font-size: 13px; color: var(--ink-3); position: relative; }
footer::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px; background: var(--accent-grad); opacity: .5; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 20px; justify-content: space-between; align-items: flex-start; }
footer a { color: var(--ink-2); }

.progress { position: fixed; left: 0; top: 0; height: 3px; background: var(--accent-grad); width: 0; z-index: 100; box-shadow: 0 0 12px var(--accent-glow); }
#toTop { position: fixed; right: 20px; bottom: 20px; z-index: 80; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--accent-line); background: var(--bg-card); color: var(--ink-2); cursor: pointer; display: none; place-items: center; font-size: 18px; box-shadow: var(--shadow-3d); backdrop-filter: blur(10px); }
#toTop.show { display: grid; }
#toTop:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 24px -6px var(--accent-glow); }

/* ============================================================
   全端适配：覆盖主流分辨率与设备
   ============================================================ */

@media (min-width: 1600px) {
  :root { --maxw: 1360px; --gap: 30px; }
  body { font-size: 17px; }
  section.chapter { padding: 108px 0; }
}

@media (max-width: 1280px) {
  .hero-grid { gap: 40px; }
  .hero-visual { height: 340px; }
}

@media (max-width: 1080px) {
  :root { --gap: 20px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { height: 300px; order: -1; }
  .hero { min-height: 0; padding: 72px 0 56px; }
  .nav a { padding: 6px 9px; font-size: 13px; }
}

@media (max-width: 900px) {
  .wrap, .wrap-narrow { padding: 0 22px; }
  section.chapter { padding: 68px 0; }
  .hero-stats { gap: 26px; }
  .bar-row { grid-template-columns: 1fr; gap: 6px; }
  .bar-note { text-align: left; }
  :root { --fx: 0; }              /* 平板及以下关闭地网/扫描线动效 */
}

@media (max-width: 768px) {
  .topbar-inner { padding: 10px 18px; gap: 10px; }
  .nav { display: none; }
  .brand-sub { display: none; }
  .theme-switch button { padding: 5px 9px; font-size: 11px; }
  .wrap, .wrap-narrow { padding: 0 18px; }
  section.chapter { padding: 56px 0; }
  .hero { padding: 52px 0 40px; }
  .hero-stats { gap: 20px 28px; margin-top: 38px; }
  .stat-grid { grid-template-columns: 1fr; }
  .line-grid { grid-template-columns: 1fr; }
  .convert { padding: 40px 22px; }
  .hero-visual { height: 260px; }
  .hc-1, .hc-2, .hc-3 { width: 74%; }
  h2 { font-size: 25px; }
  :root { --3d: 0; --hud: 0; }     /* 触屏/窄屏：3D 与 HUD 装饰一并关闭 */
}

@media (max-width: 480px) {
  body { font-size: 15.5px; }
  .hero-stats { gap: 16px 22px; }
  .hero-stats div b { font-size: 21px; }
  .btn3d { padding: 13px 24px; font-size: 14px; }
  .tabs { width: 100%; justify-content: space-between; }
  .tabs button { padding: 8px 14px; font-size: 12.5px; }
  .convert { padding: 34px 18px; }
  .panel, .stat, .line-card { padding: 20px 18px; }
}

@media (max-width: 380px) {
  .wrap, .wrap-narrow { padding: 0 14px; }
  .hero h1 { font-size: 30px; }
  .brand span div:first-child { font-size: 13px; }
}

@media (hover: none) { :root { --3d: 0; } }

@media (prefers-reduced-motion: reduce) {
  :root { --3d: 0; --fx: 0; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .topbar, #toTop, .progress, .hero-bg { display: none !important; }
  body { background: #fff; color: #000; }
  .tab-panel { display: block !important; }
  .stat-value, .hero h1 em { -webkit-text-fill-color: #000; color: #000; }
}

/* ============================================================
   全球版报告（global.html）专用组件
   ============================================================ */

.concl {
  margin: 0 0 30px; padding: 22px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--accent-line);
  background: var(--bg-elev);
  border-left: 3px solid var(--accent);
  box-shadow: 0 0 34px -20px var(--accent-glow);
}
.concl-zh { font-size: 20px; line-height: 1.55; font-weight: 700; color: var(--ink); letter-spacing: .01em; }
.concl-en { margin-top: 10px; font-size: 14px; line-height: 1.6; color: var(--ink-3); font-family: var(--font-mono); letter-spacing: .005em; }

.en { display: block; font-size: 12.5px; line-height: 1.55; color: var(--ink-3); font-family: var(--font-mono); letter-spacing: .04em; text-transform: uppercase; }

.chart-box {
  margin-top: 34px; padding: 24px 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--accent-line); background: var(--bg-card);
  box-shadow: 0 0 40px -24px var(--accent-glow);
}
.chart-title { font-size: 14.5px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.chart-cap { margin-top: 16px; font-size: 12px; line-height: 1.7; color: var(--ink-3); }

.mini { display: grid; gap: 14px; margin-top: 30px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.mini-item { padding: 16px 18px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--bg-elev); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease); }
.mini-item:hover { border-color: var(--accent-line); box-shadow: 0 0 24px -10px var(--accent-glow); }
.mini-item b { display: block; font-size: 19px; color: var(--accent); line-height: 1.3; font-family: var(--font-display); text-shadow: 0 0 18px var(--accent-glow); }
.mini-item span { display: block; font-size: 12.5px; color: var(--ink-2); margin-top: 6px; line-height: 1.6; }
.mini-item .en { margin-top: 4px; }

.src-line { font-size: 12.5px; line-height: 1.9; color: var(--ink-3); }
.src-line b { color: var(--ink-2); font-weight: 600; }

.sec-no { font-family: var(--font-mono); font-size: 12px; letter-spacing: .2em; color: var(--accent); margin-bottom: 8px; text-shadow: 0 0 16px var(--accent-glow); }

@media (max-width: 640px) {
  .concl { padding: 18px 18px; }
  .concl-zh { font-size: 17px; }
  .chart-box { padding: 18px 14px 16px; }
  .bar-row { grid-template-columns: 1fr; gap: 6px; }
  .bar-note { text-align: left; min-width: 0; }
}

/* ============================================================
   看板（analytics.html）科幻化增强
   ============================================================ */
.adm-top h1 { letter-spacing: .01em; }
.adm-top .tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .16em; color: var(--accent); border: 1px solid var(--accent-line); border-radius: 999px; padding: 3px 10px; text-shadow: 0 0 12px var(--accent-glow); }
.fld label { color: var(--accent) !important; opacity: .8; }
/* 不用 !important：否则会压过 glass.css 的玻璃化与 :focus 高亮（analytics 页输入框） */
input, select { background: var(--bg-elev); border: 1px solid var(--line-strong); }
input::placeholder { color: var(--ink-3); opacity: .7; font-family: var(--font-mono); }
.card { box-shadow: 0 0 40px -28px var(--accent-glow); }
.kpi b { text-shadow: 0 0 18px var(--accent-glow); }
.empty { font-family: var(--font-mono); letter-spacing: .04em; color: var(--ink-3); }
.msg { font-family: var(--font-mono); font-size: 12.5px; }

/* ============================================================
   翻页模式（Deck）—— html.deck-on / body.deck-on 时生效
   由 deck.js 控制开关，默认开启；可在右下角切换为连续滚动
   ============================================================ */
html.deck-on { scroll-snap-type: y mandatory; scroll-padding-top: 0; }
body.deck-on { --topbar-h: 56px; }

.deck-on .topbar { position: fixed; left: 0; right: 0; top: 0; }

.deck-on .hero,
.deck-on .chapter {
  height: 100vh;      /* 老浏览器回退 */
  height: 100dvh;     /* 移动端地址栏收起/展开时保持稳定 */
  min-height: 460px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding-top: calc(var(--topbar-h) + 30px);
  padding-bottom: 46px;
  border-top: 0;
}
.deck-on .hero { display: flex; align-items: center; }
.deck-on .chapter > .wrap {
  width: 100%;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.deck-on .chapter > .wrap > * { flex: 0 0 auto; }

/* 内部滚动条 */
.deck-on .hero::-webkit-scrollbar,
.deck-on .chapter::-webkit-scrollbar { width: 6px; }
.deck-on .hero::-webkit-scrollbar-track,
.deck-on .chapter::-webkit-scrollbar-track { background: transparent; }
.deck-on .hero::-webkit-scrollbar-thumb,
.deck-on .chapter::-webkit-scrollbar-thumb {
  background: var(--accent-line); border-radius: 99px;
}
.deck-on .hero,
.deck-on .chapter { scrollbar-width: thin; scrollbar-color: var(--accent-line) transparent; }

/* 内容超高时的底部渐隐提示 */
.deck-on .hero.is-scrollable::after,
.deck-on .chapter.is-scrollable::after {
  content: ''; position: sticky; bottom: -46px; display: block;
  height: 46px; margin: -46px -28px 0; padding: 0 28px;
  background: linear-gradient(to top, var(--bg) 12%, transparent);
  pointer-events: none;
}
.deck-on #toTop { display: none !important; }
/* 页脚作为最后一屏参与吸附，避免 mandatory 模式下无法触达 */
.deck-on footer {
  min-height: 62vh; display: flex; align-items: center;
  scroll-snap-align: start; scroll-snap-stop: always;
  padding-top: calc(var(--topbar-h) + 24px);
}

/* ---- 翻页控件 ---- */
.deck-hud {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  display: flex; align-items: center; gap: 6px;
  padding: 6px; border-radius: 999px;
  border: 1px solid var(--accent-line);
  background: var(--bg-blur); backdrop-filter: blur(14px) saturate(160%);
  box-shadow: 0 0 30px -14px var(--accent-glow), var(--shadow-3d);
  font-family: var(--font-mono);
}
.deck-hud button {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid transparent;
  background: transparent; color: var(--ink-2);
  cursor: pointer; transition: .2s; font-size: 14px; line-height: 1;
}
.deck-hud button:hover:not(:disabled) {
  color: var(--accent); border-color: var(--accent-line);
  background: var(--bg-elev); box-shadow: 0 0 14px -4px var(--accent-glow);
}
.deck-hud button:disabled { opacity: .3; cursor: default; }
.deck-hud .deck-count {
  padding: 0 8px; font-size: 11.5px; letter-spacing: .12em;
  color: var(--ink-2); white-space: nowrap; min-width: 56px; text-align: center;
}
.deck-hud .deck-count b { color: var(--accent); text-shadow: 0 0 10px var(--accent-glow); }
.deck-hud .sep { width: 1px; height: 20px; background: var(--line-strong); margin: 0 2px; }
.deck-hud .deck-mode { width: auto; padding: 0 10px; border-radius: 999px; font-size: 10.5px; letter-spacing: .1em; }

.deck-dots {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%);
  z-index: 85; display: flex; flex-direction: column; gap: 9px;
}
.deck-dots i {
  display: block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--line-strong); cursor: pointer; transition: .25s;
  border: 1px solid transparent;
}
.deck-dots i:hover { background: var(--ink-3); transform: scale(1.35); }
.deck-dots i.on {
  background: var(--accent); transform: scale(1.5);
  box-shadow: 0 0 10px var(--accent-glow);
}
.deck-on .deck-dots { opacity: 1; }

.deck-hint {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  z-index: 95; padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--accent-line); background: var(--bg-blur);
  backdrop-filter: blur(12px);
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em;
  color: var(--ink-2); box-shadow: 0 0 26px -12px var(--accent-glow);
  animation: deckFade 5.2s ease forwards; pointer-events: none;
}
@keyframes deckFade {
  0% { opacity: 0; transform: translate(-50%, 10px); }
  12%, 72% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -6px); }
}

@media (max-width: 900px) { .deck-dots { display: none; } }
@media (max-width: 768px) {
  html.deck-on { scroll-snap-type: y proximity; }
  .deck-on .hero,
  .deck-on .chapter { padding-top: calc(var(--topbar-h) + 18px); padding-bottom: 60px; }
  .deck-hud { right: 12px; bottom: 12px; gap: 4px; padding: 5px; }
  .deck-hud button { width: 30px; height: 30px; font-size: 13px; }
  .deck-hud .deck-count { font-size: 10.5px; min-width: 48px; padding: 0 5px; }
  .deck-hint { font-size: 10.5px; padding: 7px 12px; bottom: 58px; white-space: nowrap; }
}
@media (max-width: 420px) {
  .deck-hud .deck-mode { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .deck-hint { animation: none; opacity: 1; }
}
@media print {
  .deck-hud, .deck-dots, .deck-hint { display: none !important; }
  .deck-on .hero, .deck-on .chapter { height: auto; overflow: visible; padding: 24px 0; }
}

/* 超窄屏（≤480px）：顶栏允许换行，4 个主题按钮进一步压缩，防止右侧裁切 */
@media (max-width: 480px) {
  .topbar-inner { flex-wrap: wrap; }
  .theme-switch { flex: 1 1 auto; justify-content: flex-end; }
  .theme-switch button { padding: 4px 7px; font-size: 10px; }
}