/* ============================================================
   AgentRank · AI Agent 实测榜 — Design System v4
   方向：数据实验室风（Data Lab / Research Publication）
   信条：数据说话，装饰退后。专业可信赖 > 高级感。
   字体：系统无衬线（标题/正文）· JetBrains Mono（数据/标签）
   配色：近冷白底 + 近黑墨 + 朱砂红作唯一强调色（与印章呼应）
   ============================================================ */

/* 自托管字体（服务器 CSP font-src 'self'，禁外链） */
@font-face { font-family: "Fraunces"; font-weight: 500; font-display: swap; src: url("../fonts/fr-500.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-weight: 600; font-display: swap; src: url("../fonts/fr-600.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-weight: 700; font-display: swap; src: url("../fonts/fr-700.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 500; font-display: swap; src: url("../fonts/jm-500.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 600; font-display: swap; src: url("../fonts/jm-600.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 700; font-display: swap; src: url("../fonts/jm-700.woff2") format("woff2"); }

/* ============================================================
   设计令牌
   ============================================================ */
:root {
  /* —— 中性：偏冷的近白底 + 近黑墨（实验室的干净与精确） —— */
  --ink:      #101418;   /* 主文字 / 深色锚点 */
  --ink-2:    #3D4751;   /* 次级正文 */
  --ink-3:    #64707D;   /* 说明 / 标签（加深，保 AA） */
  --paper:    #FAFBFC;   /* 页面底 · 近冷白 */
  --paper-2:  #F0F3F6;   /* 下沉层（轨道 / 表头底） */
  --card:     #FFFFFF;   /* 纯白卡片 */

  /* —— 分隔线：冷调 hairline 两级 —— */
  --line:      #E3E8ED;
  --line-soft: #EDF1F4;

  /* —— 唯一强调色：朱砂红（与火漆印章呼应，少量使用） —— */
  --seal:      #C53D2C;  /* 强调 / 链接 / 关键高亮 */
  --seal-deep: #9E2F20;
  --seal-bg:   #FAF1EF;

  /* —— 语义色 —— */
  --ok:   #15803D;   /* 通过 / 上升 */
  --bad:  #B91C1C;   /* 失败 / 下降 */
  --gold:   #9C7C1E; /* 仅图形 */
  --silver: #8A8F98;
  --bronze: #A2703F;

  /* —— 兼容旧变量（修复历史遗留 undefined 引用）—— */
  --blue:      #C53D2C;
  --blue-bg:   #FAF1EF;
  --blue-ink:  #101418;
  --shadow-sm: 0 1px 2px rgba(16,20,24,.05);
  --shadow-md: 0 2px 4px rgba(16,20,24,.05), 0 8px 20px -8px rgba(16,20,24,.08);
  --shadow-lg: 0 2px 6px rgba(16,20,24,.06), 0 20px 44px -16px rgba(16,20,24,.14);

  /* —— 圆角：克制三档 —— */
  --r-sm: 7px;
  --r:    10px;
  --r-lg: 14px;

  /* —— 阴影（新令牌）—— */
  --sh-1: 0 1px 2px rgba(16,20,24,.05);
  --sh-2: 0 1px 2px rgba(16,20,24,.05), 0 8px 20px -8px rgba(16,20,24,.08);
  --sh-3: 0 2px 6px rgba(16,20,24,.06), 0 20px 44px -16px rgba(16,20,24,.14);

  /* —— 字体：标题/正文统一系统无衬线（专业可信），数据用 Mono —— */
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  /* —— 动效 —— */
  --ease: cubic-bezier(.2, .8, .2, 1);
  --dur: .3s;

  --sp-section: 112px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.72;
  letter-spacing: .003em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
::selection { background: rgba(197,61,44,.16); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ============================================================
   Layout —— 统一节奏：eyebrow → 16px → title → 14px → sub → 48px → 内容
   ============================================================ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.section { padding: var(--sp-section) 0; }
.section-tight { padding: 80px 0; }

.eyebrow {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: var(--seal);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--seal); }

.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 3.6vw, 40px);
  letter-spacing: -.02em; line-height: 1.2;
  margin: 16px 0 14px; color: var(--ink);
}
.section-sub { color: var(--ink-2); max-width: 640px; font-size: 16px; line-height: 1.72; }

/* ============================================================
   Nav —— 白底 hairline，滚动后毛玻璃
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(250,251,252,.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav.scrolled { background: rgba(250,251,252,.94); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 28px;
  height: 68px; display: flex; align-items: center; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 19px; color: var(--ink); letter-spacing: -.015em; }
.brand-badge { display: none; }
.brand-badge-img { width: 32px; height: 32px; border-radius: 50%; object-fit: contain; }
.brand small { font-family: var(--font-mono); font-size: 9px; color: var(--ink-3); font-weight: 500; letter-spacing: .18em; display: block; line-height: 1; margin-top: 3px; }

.nav-links { display: flex; gap: 2px; margin-left: auto; align-items: center; }
.nav-links a { font-size: 14px; color: var(--ink-2); font-weight: 500; padding: 8px 13px; border-radius: var(--r-sm); transition: all var(--dur) var(--ease); }
.nav-links a:hover { color: var(--ink); background: rgba(16,20,24,.045); }
.nav-links a.active { color: var(--seal); font-weight: 600; }
.lang-toggle { font-family: var(--font-mono); font-size: 11.5px; font-weight: 600; color: var(--ink-2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 6px 11px; margin-left: 8px; background: var(--card); transition: all var(--dur) var(--ease); }
.lang-toggle:hover { border-color: var(--ink-3); color: var(--ink); }
.nav-cta { background: var(--ink); color: var(--paper); font-size: 13.5px; font-weight: 600; padding: 9px 18px; border-radius: var(--r-sm); margin-left: 10px; transition: all var(--dur) var(--ease); }
.nav-cta:hover { background: var(--seal); transform: translateY(-1px); }

/* ============================================================
   Hero —— 左文案 + 右「实测终端」演示卡（动态元素）
   ============================================================ */
.hero {
  position: relative; padding: 156px 0 96px; overflow: hidden;
  background:
    radial-gradient(820px 420px at 86% -6%, rgba(197,61,44,.05), transparent 60%),
    var(--paper);
}
/* 实验室坐标纸底纹（极淡） */
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(16,20,24,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,20,24,.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, #000 30%, transparent 72%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 30%, transparent 72%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.02fr .98fr; gap: 72px; align-items: center; }
.hero-copy { max-width: 560px; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); font-weight: 500;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; box-shadow: var(--sh-1);
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(21,128,61,.15); animation: pulse 2.4s infinite; }

.hero h1 {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.14; letter-spacing: -.025em;
  margin-top: 26px; color: var(--ink);
}
.hero h1 em { font-style: normal; color: var(--seal); }
.hero-sub { margin-top: 22px; font-size: 16.5px; line-height: 1.74; color: var(--ink-2); max-width: 520px; }
.hero-actions { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px; border-radius: var(--r-sm);
  font-size: 15px; font-weight: 600; letter-spacing: .005em;
  transition: all var(--dur) var(--ease);
}
.btn-primary { background: var(--ink); color: var(--paper); box-shadow: var(--sh-1); }
.btn-primary:hover { background: var(--seal); transform: translateY(-1px); box-shadow: 0 8px 20px -8px rgba(197,61,44,.5); }
.btn-ghost { background: var(--card); color: var(--ink); border: 1px solid var(--line); box-shadow: var(--sh-1); }
.btn-ghost:hover { border-color: var(--ink-3); transform: translateY(-1px); box-shadow: var(--sh-2); }

/* 数据条：mono 数字 + hairline 顶线，像实验报告表头 */
.hero-stats { margin-top: 56px; display: flex; gap: 0; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 26px; }
.hstat { padding: 0 32px 0 0; margin-right: 32px; border-right: 1px solid var(--line-soft); }
.hstat:last-child { border-right: none; }
.hstat .num { font-family: var(--font-mono); font-size: 28px; font-weight: 700; color: var(--ink); letter-spacing: -.03em; line-height: 1; }
.hstat .num span { color: var(--seal); }
.hstat .lbl { font-size: 12.5px; color: var(--ink-3); margin-top: 8px; line-height: 1.5; }

/* 印章退出 Hero（仅保留在导航/页脚，避免浮层造成的混乱感） */
.seal { display: none; }

/* ---- 实测终端演示卡（核心动态元素） ---- */
.hero-card { position: relative; }
.term {
  background: #0D1117; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 24px 60px -20px rgba(16,20,24,.35), 0 2px 6px rgba(16,20,24,.1);
  font-family: var(--font-mono);
}
.term-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; background: rgba(255,255,255,.03); border-bottom: 1px solid rgba(255,255,255,.07); }
.term-bar i { width: 9px; height: 9px; border-radius: 50%; background: #30363D; }
.term-bar i:nth-child(1) { background: #FF5F57; }
.term-bar i:nth-child(2) { background: #FEBC2E; }
.term-bar i:nth-child(3) { background: #28C840; }
.term-bar span { margin-left: 10px; font-size: 11px; color: #7D8590; letter-spacing: .1em; }
.term-bar .live { margin-left: auto; display: flex; align-items: center; gap: 6px; font-size: 10.5px; color: #3FB950; font-weight: 700; letter-spacing: .1em; }
.term-bar .live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #3FB950; animation: pulse 1.6s infinite; }
.term-body { padding: 18px 20px 22px; font-size: 12.5px; line-height: 2; color: #C9D1D9; min-height: 318px; }
.term-body .ln { display: block; opacity: 0; transform: translateY(4px); transition: opacity .3s, transform .3s; }
.term-body .ln.in { opacity: 1; transform: none; }
.term-body .prompt { color: #58A6FF; font-weight: 600; }
.term-body .dim { color: #7D8590; }
.term-body .ok { color: #3FB950; font-weight: 600; }
.term-body .warn { color: #D29922; }
.term-body .score { color: #FF7B72; font-weight: 700; }
.term-score-row {
  margin-top: 14px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px; background: rgba(255,255,255,.04);
  display: flex; align-items: center; gap: 14px; opacity: 0; transform: translateY(6px);
  transition: opacity .4s, transform .4s;
}
.term-score-row.in { opacity: 1; transform: none; }
.term-score-row .k { font-size: 11px; color: #7D8590; letter-spacing: .12em; }
.term-score-row .v { font-size: 26px; font-weight: 700; color: #FF7B72; letter-spacing: -.02em; }
.term-score-row .v small { font-size: 13px; color: #7D8590; font-weight: 500; }
.term-score-row .bar { flex: 1; height: 6px; background: rgba(255,255,255,.08); border-radius: 99px; overflow: hidden; }
.term-score-row .bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #58A6FF, #FF7B72); border-radius: 99px; transition: width 1s var(--ease); }
.cursor { display: inline-block; width: 7px; height: 15px; background: #58A6FF; vertical-align: -2px; animation: blink 1s steps(1) infinite; }

/* ============================================================
   实测日志 ticker（滚动动效，细而克制）
   ============================================================ */
.ticker { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--card); overflow: hidden; }
.ticker-inner { display: flex; align-items: stretch; }
.ticker-label { flex: none; padding: 13px 18px; font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .16em; color: var(--seal); border-right: 1px solid var(--line); text-transform: uppercase; display: flex; align-items: center; gap: 8px; background: var(--card); position: relative; z-index: 2; }
.ticker-label::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--ok); animation: pulse 2s infinite; }
.ticker-track { display: flex; white-space: nowrap; animation: ticker 46s linear infinite; align-items: center; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-track span { padding: 13px 22px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); border-right: 1px solid var(--line-soft); }
.ticker-track span b { color: var(--ink); font-weight: 600; }
.ticker-track span i { font-style: normal; color: var(--seal); font-weight: 600; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============================================================
   Trust bar
   ============================================================ */
.trustbar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); }
.trustbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 24px 28px; max-width: 1200px; margin: 0 auto; flex-wrap: wrap; }
.trust-quote { font-size: 14px; color: var(--ink-2); line-height: 1.7; max-width: 600px; }
.trust-quote b { color: var(--ink); font-family: var(--font-mono); font-size: 15px; }
.trust-items { display: flex; gap: 26px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--ink-2); font-weight: 500; }
.trust-item svg { color: var(--ok); flex: none; }

/* ============================================================
   Cards —— 扁平 hairline，hover 才起阴影
   ============================================================ */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); padding: 26px;
  transition: all var(--dur) var(--ease);
}
.card:hover { border-color: rgba(197,61,44,.3); box-shadow: var(--sh-2); transform: translateY(-2px); }

/* ============================================================
   Leaderboard —— 实验数据表格感
   ============================================================ */
.board { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-1); }
.board-head {
  display: grid; grid-template-columns: 52px minmax(0,1fr) 158px 88px 128px 108px;
  gap: 16px; align-items: center; padding: 14px 26px;
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--line); background: var(--paper-2);
}
.board-row {
  display: grid; grid-template-columns: 52px minmax(0,1fr) 158px 88px 128px 108px;
  gap: 16px; align-items: center; padding: 18px 26px;
  border-bottom: 1px solid var(--line-soft); cursor: pointer;
  transition: background var(--dur) var(--ease);
}
.board-row:last-child { border-bottom: none; }
.board-row:hover { background: var(--seal-bg); }
.board-row.stale { opacity: .5; }
.board-row.stale:hover { opacity: .78; }

/* 排名：纯 mono 数字，前三红色 */
.rank-num { font-family: var(--font-mono); font-size: 16px; font-weight: 700; color: var(--ink-3); text-align: center; letter-spacing: -.02em; }
.rank-num.r1, .rank-num.r2, .rank-num.r3 { color: var(--seal); }

.agent-cell { display: flex; align-items: center; gap: 13px; min-width: 0; }
.agent-logo { width: 40px; height: 40px; border-radius: 9px; flex: none; display: grid; place-items: center; color: #FFF; font-family: var(--font-display); font-size: 17px; font-weight: 700; background: var(--card); border: 1px solid var(--line); }
.agent-logo img { width: 100%; height: 100%; object-fit: contain; padding: 5px; border-radius: 9px; }
.cmp-logo { width: 50px; height: 50px; }
.agent-name { font-weight: 600; font-size: 15px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agent-vendor { font-size: 12px; color: var(--ink-3); }
.cell-label { display: none; }

.score-pill-wrap { min-width: 0; }
.score-pill { font-family: var(--font-mono); font-weight: 700; font-size: 18px; color: var(--ink); display: inline-flex; align-items: baseline; gap: 3px; letter-spacing: -.03em; }
.score-pill small { font-size: 11px; color: var(--ink-3); font-weight: 500; }
.score-bar { height: 4px; background: var(--paper-2); border-radius: 99px; overflow: hidden; margin-top: 7px; max-width: 116px; }
.score-bar i { display: block; height: 100%; border-radius: 99px; background: var(--seal); transition: width 1.1s var(--ease); }

.trend { font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; }
.trend.up { color: var(--ok); }
.trend.down { color: var(--bad); }
.trend.flat { color: var(--ink-3); }

.stale-tag { font-size: 10.5px; font-family: var(--font-mono); color: var(--ink-3); border: 1px dashed var(--line); border-radius: var(--r-sm); padding: 2px 8px; }

/* 赞助位：最淡处理 */
.sponsor-slot { margin-top: 18px; border: 1px dashed var(--line); background: var(--paper); border-radius: var(--r); padding: 15px 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.sponsor-tag { font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .1em; color: var(--ink-3); background: var(--paper-2); padding: 4px 10px; border-radius: var(--r-sm); flex: none; text-transform: uppercase; }
.sponsor-slot .agent-name { color: var(--ink-2); }
.sponsor-note { margin-left: auto; font-size: 12.5px; color: var(--ink-3); }

/* ============================================================
   Filter chips
   ============================================================ */
.filter-bar { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; margin-bottom: 28px; }
.chip { padding: 8px 17px; border-radius: 999px; font-size: 13.5px; font-weight: 500; border: 1px solid var(--line); background: var(--card); color: var(--ink-2); transition: all var(--dur) var(--ease); }
.chip:hover { border-color: var(--seal); color: var(--seal); }
.chip.active { background: var(--ink); border-color: var(--ink); color: var(--paper); font-weight: 600; }
.filter-right { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--ink-3); font-family: var(--font-mono); }

/* ============================================================
   Five tasks
   ============================================================ */
.tasks-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 48px; }
.task-card { padding: 24px 18px; text-align: left; }
.task-icon { width: 40px; height: 40px; border-radius: 9px; border: 1px solid var(--line); background: var(--paper); display: grid; place-items: center; color: var(--seal); margin-bottom: 16px; }
.task-card h4 { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 6px; letter-spacing: 0; }
.task-card p { font-size: 12.5px; color: var(--ink-3); line-height: 1.65; }

/* ============================================================
   Dimension bars / ring
   ============================================================ */
.dim-row { display: grid; grid-template-columns: 132px 1fr 58px; align-items: center; gap: 16px; padding: 11px 0; }
.dim-name { font-size: 14px; color: var(--ink-2); font-weight: 500; }
.dim-name small { display: block; font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); letter-spacing: .08em; }
.dim-track { height: 6px; background: var(--paper-2); border-radius: 99px; overflow: hidden; }
.dim-fill { height: 100%; border-radius: 99px; background: var(--seal); transition: width 1.2s var(--ease); }
.dim-val { font-family: var(--font-mono); font-weight: 700; font-size: 15px; color: var(--ink); text-align: right; letter-spacing: -.02em; }

.score-ring-wrap { display: flex; align-items: center; gap: 36px; flex-wrap: wrap; }
.score-ring { position: relative; width: 168px; height: 168px; flex: none; }
.score-ring svg { transform: rotate(-90deg); }
.score-ring .ring-bg { stroke: var(--paper-2); }
.score-ring .ring-val { stroke: url(#ringGrad); stroke-linecap: round; transition: stroke-dashoffset 1.3s var(--ease); }
.score-ring-center { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.score-ring-center .v { font-family: var(--font-mono); font-size: 42px; font-weight: 700; color: var(--ink); line-height: 1; letter-spacing: -.04em; }
.score-ring-center .l { font-size: 11.5px; color: var(--ink-3); margin-top: 7px; letter-spacing: .06em; }

/* ============================================================
   Grades
   ============================================================ */
.grade { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11.5px; font-weight: 700; padding: 4px 11px; border-radius: var(--r-sm); letter-spacing: .04em; }
.grade.a { background: #E8F4EC; color: #14563A; }
.grade.b { background: #F6EED7; color: #7A6115; }
.grade.c { background: #FAEBD7; color: #8A5310; }
.grade.d { background: #F9E4E1; color: #9E2B20; }

/* ============================================================
   Product detail
   ============================================================ */
.pd-hero { padding: 148px 0 56px; background: radial-gradient(720px 360px at 82% -10%, rgba(197,61,44,.05), transparent 62%), var(--paper); }
.pd-head { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; }
.pd-logo { width: 80px; height: 80px; border-radius: var(--r-lg); display: grid; place-items: center; color: #FFF; font-family: var(--font-display); font-size: 34px; font-weight: 800; box-shadow: var(--sh-2); flex: none; background: var(--card); border: 1px solid var(--line); }
.pd-logo img { width: 100%; height: 100%; object-fit: contain; padding: 12px; border-radius: var(--r-lg); }
.pd-title h1 { font-family: var(--font-display); font-size: clamp(30px, 4.2vw, 46px); letter-spacing: -.025em; color: var(--ink); line-height: 1.15; font-weight: 800; }
.pd-meta { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; align-items: center; }
.meta-pill { font-size: 12px; font-family: var(--font-mono); color: var(--ink-2); background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; }
.meta-pill.warn { color: #8A5310; border-color: #E6D2A8; background: #FBF5E6; }
.pd-cta { margin-left: auto; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.pd-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 24px; margin-top: 10px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 30px; box-shadow: var(--sh-1); }
.panel h3 { font-family: var(--font-display); font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; letter-spacing: -.015em; }
.panel h3 .mono { font-size: 10px; color: var(--ink-3); letter-spacing: .14em; font-weight: 500; margin-left: 2px; }

.task-record { border: 1px solid var(--line); border-radius: var(--r); padding: 20px; margin-bottom: 13px; transition: all var(--dur) var(--ease); background: var(--card); }
.task-record:hover { border-color: rgba(197,61,44,.3); box-shadow: var(--sh-2); transform: translateY(-1px); }
.task-record-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.task-record-head h4 { font-size: 14.5px; font-weight: 700; color: var(--ink); }
.task-record-stats { margin-left: auto; display: flex; gap: 18px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); }
.task-record-body { margin-top: 12px; font-size: 14px; color: var(--ink-2); line-height: 1.7; }
.task-io { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.io-box { background: var(--paper); border: 1px solid var(--line-soft); border-radius: 8px; padding: 13px 15px; font-size: 12.5px; }
.io-box .t { font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px; font-weight: 600; }
.io-box p { color: var(--ink-2); line-height: 1.65; }

/* reviews */
.review { border-bottom: 1px solid var(--line-soft); padding: 20px 0; }
.review:last-child { border-bottom: none; }
.review-head { display: flex; align-items: center; gap: 11px; }
.review-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--seal-bg); color: var(--seal); display: grid; place-items: center; font-weight: 700; font-size: 13px; flex: none; }
.review-name { font-weight: 600; font-size: 14px; color: var(--ink); }
.review-badge { font-size: 10.5px; font-family: var(--font-mono); background: #E8F4EC; color: #14563A; border-radius: var(--r-sm); padding: 2px 8px; font-weight: 600; }
.review-date { margin-left: auto; font-size: 12px; color: var(--ink-3); font-family: var(--font-mono); }
.review-body { margin-top: 9px; font-size: 14px; color: var(--ink-2); line-height: 1.72; }
.review-vote { margin-top: 11px; display: flex; gap: 9px; }
.vote-btn { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ink-3); border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px; transition: all var(--dur) var(--ease); background: var(--card); }
.vote-btn:hover, .vote-btn.voted { border-color: var(--seal); color: var(--seal); background: var(--seal-bg); }

/* ============================================================
   Compare
   ============================================================ */
.vs-grid { display: grid; grid-template-columns: 1fr 64px 1fr; gap: 0; align-items: stretch; background: var(--card); border-bottom: 1px solid var(--line); }
.vs-col { padding: 26px; }
.vs-mid { display: grid; place-items: center; }
.vs-badge { width: 46px; height: 46px; border-radius: 50%; background: var(--ink); color: var(--paper); display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 14px; letter-spacing: .02em; }
.vs-row { display: grid; grid-template-columns: 1fr 64px 1fr; padding: 14px 28px; border-top: 1px solid var(--line-soft); align-items: center; }
.vs-row .l, .vs-row .r { font-family: var(--font-mono); font-size: 15px; font-weight: 600; color: var(--ink-2); letter-spacing: -.01em; }
.vs-row .l { text-align: right; }
.vs-row .l.win, .vs-row .r.win { color: var(--seal); }
.vs-row .m { text-align: center; font-size: 12px; color: var(--ink-3); font-weight: 500; }
.compare-select { width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: var(--r-sm); font-size: 15px; font-family: var(--font-body); background: var(--card); color: var(--ink); font-weight: 600; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23C53D2C' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; cursor: pointer; transition: border-color var(--dur) var(--ease); }
.compare-select:hover, .compare-select:focus { border-color: var(--seal); outline: none; }

/* ============================================================
   Methodology
   ============================================================ */
.formula { background: var(--ink); color: var(--paper); border-radius: var(--r-lg); padding: 40px; font-family: var(--font-mono); overflow-x: auto; box-shadow: var(--sh-3); }
.formula .f-title { font-size: 10.5px; letter-spacing: .16em; color: #E08A7C; text-transform: uppercase; margin-bottom: 18px; font-weight: 600; }
.formula .f-line { font-size: clamp(15px, 2.4vw, 20px); font-weight: 600; white-space: nowrap; letter-spacing: -.01em; }
.formula .w { color: #F0968A; }
.method-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.method-table th { text-align: left; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); padding: 12px 16px; border-bottom: 1px solid var(--line); font-weight: 600; background: var(--paper-2); }
.method-table td { padding: 16px; border-bottom: 1px solid var(--line-soft); vertical-align: top; color: var(--ink-2); line-height: 1.7; }
.method-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
.method-table tr:last-child td { border-bottom: none; }

/* ============================================================
   Lead capture —— 深色锚点
   ============================================================ */
.lead-panel { position: relative; border-radius: var(--r-lg); overflow: hidden; background: var(--ink); padding: 68px 60px; color: var(--paper); box-shadow: var(--sh-3); }
.lead-panel::before { content: ""; position: absolute; inset: 0; opacity: .05; background-image: linear-gradient(rgba(250,251,252,.5) 1px, transparent 1px), linear-gradient(90deg, rgba(250,251,252,.5) 1px, transparent 1px); background-size: 56px 56px; mask-image: radial-gradient(ellipse at 82% 18%, #000, transparent 72%); -webkit-mask-image: radial-gradient(ellipse at 82% 18%, #000, transparent 72%); }
.lead-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: center; }
.lead-inner h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.02em; line-height: 1.24; }
.lead-inner p { margin-top: 14px; color: rgba(250,251,252,.72); font-size: 15px; line-height: 1.74; }
.lead-form { display: flex; flex-direction: column; gap: 11px; }
.lead-form input, .lead-form textarea { width: 100%; padding: 14px 17px; border-radius: var(--r-sm); border: 1px solid rgba(250,251,252,.14); background: rgba(250,251,252,.06); color: var(--paper); font-size: 15px; font-family: var(--font-body); transition: all var(--dur) var(--ease); resize: none; }
.lead-form input::placeholder, .lead-form textarea::placeholder { color: rgba(250,251,252,.42); }
.lead-form input:focus, .lead-form textarea:focus { outline: none; background: rgba(250,251,252,.1); border-color: rgba(250,251,252,.38); }
.lead-submit { background: var(--seal); color: #FFF; font-weight: 700; padding: 14px; border-radius: var(--r-sm); font-size: 15px; transition: all var(--dur) var(--ease); }
.lead-submit:hover { background: var(--seal-deep); transform: translateY(-1px); }
.lead-success { display: none; text-align: center; padding: 34px 0; }
.lead-success.show { display: block; animation: fadeUp .5s var(--ease); }
.lead-success .big { width: 52px; height: 52px; margin: 0 auto; border-radius: 50%; border: 1.5px solid rgba(250,251,252,.35); display: grid; place-items: center; color: #3FB950; font-size: 22px; }
.lead-success h3 { font-family: var(--font-display); font-size: 22px; margin-top: 16px; letter-spacing: -.015em; }
.lead-success p { color: rgba(250,251,252,.72); font-size: 14px; margin-top: 8px; }

/* ============================================================
   Footer
   ============================================================ */
.footer { border-top: 1px solid var(--line); background: var(--card); padding: 72px 0 36px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer h5 { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 16px; font-weight: 600; }
.footer a { display: block; font-size: 14px; color: var(--ink-2); padding: 5px 0; transition: color var(--dur) var(--ease); }
.footer a:hover { color: var(--seal); }
.footer-desc { font-size: 13.5px; color: var(--ink-3); margin-top: 13px; max-width: 320px; line-height: 1.74; }
.footer-bottom { margin-top: 52px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-3); }
.disclosure { background: var(--paper); border: 1px solid var(--line-soft); border-radius: 8px; padding: 13px 17px; font-size: 12.5px; color: var(--ink-2); margin-top: 20px; max-width: 620px; line-height: 1.7; }

/* ============================================================
   Page hero（内页）
   ============================================================ */
.page-hero { padding: 148px 0 56px; background: radial-gradient(720px 320px at 86% -10%, rgba(197,61,44,.05), transparent 62%), var(--paper); }

/* ============================================================
   Animations
   ============================================================ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(21,128,61,.3); } 70% { box-shadow: 0 0 0 7px rgba(21,128,61,0); } 100% { box-shadow: 0 0 0 0 rgba(21,128,61,0); } }
@keyframes blink { 50% { opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .ticker-track { animation: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero-copy { max-width: 100%; }
  .tasks-grid { grid-template-columns: repeat(3, 1fr); }
  .pd-grid { grid-template-columns: 1fr; }
  .lead-inner { grid-template-columns: 1fr; gap: 38px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  :root { --sp-section: 80px; }
  .container, .nav-inner { padding: 0 20px; }
  .hero { padding: 128px 0 72px; }
  .hero h1 { font-size: clamp(30px, 8.6vw, 40px); }
  .hero-stats { margin-top: 44px; }
  .hstat { padding: 0 20px 0 0; margin-right: 20px; }
  .hstat .num { font-size: 24px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .board-head { display: none; }
  .board-row { grid-template-columns: 38px 1fr auto; grid-template-areas: "rank agent score"; padding: 16px 18px; gap: 12px; }
  .board-row > .rank-num { grid-area: rank; }
  .board-row > .agent-cell { grid-area: agent; }
  .board-row > .score-pill-wrap { grid-area: score; text-align: right; }
  .board-row .hide-m { display: none; }
  .score-bar { margin-left: auto; }
  .tasks-grid { grid-template-columns: 1fr 1fr; }
  .task-io { grid-template-columns: 1fr; }
  .vs-grid { grid-template-columns: 1fr; }
  .vs-mid { padding: 8px 0; }
  .vs-row { grid-template-columns: 1fr 52px 1fr; padding: 12px 16px; }
  .vs-col { padding: 20px; }
  .lead-panel { padding: 38px 22px; }
  .panel { padding: 22px; }
  .pd-cta { margin-left: 0; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .dim-row { grid-template-columns: 106px 1fr 48px; gap: 12px; }
  .ticker-track { animation-duration: 30s; }
}