/* ============================================================
   Boldlion site — Design System
   ============================================================
   FONT FAMILIES
     --serif    Cormorant + Noto Serif SC
                用于：h1 / h2 / 大数字 / 引文 / 品牌感强的标题
     --sans     Inter + PingFang SC
                用于：所有正文、标签、UI、表格

   TYPE SCALE
     --fs-display    88-112px  Hero 大数字 / Gauge
     --fs-h1         48-72px   页面 H1
     --fs-h2         32-48px   section H2
     --fs-h3         22-32px   卡片标题 / 列表组标题
     --fs-h4         16-18px   子标题 / 强调列表标签
     --fs-lg         17-19px   lead 段落 / 引言
     --fs-base       15-16px   正文 · 列表数值 · 表格单元格
     --fs-sm         13-14px   次要正文 · 副文案
     --fs-xs         12-13px   meta / caption / 时间戳
     --fs-eyebrow    11px      eyebrow tracking 标签（仅英文 label）

   COLOR ROLES
     --ink           黑 主文（最高对比） — 标题 / 关键标签
     --ink-2         深灰 正文 — 段落 / 数值
     --mute          中灰 次要 — 副文案 / 描述
     --mute-2        浅灰 占位 — placeholder / caption
     --accent        赭橙 #c93a1e — 品牌色 / 关键数字 / 链接 hover
     --line          12% 黑 边框

   WEIGHT
     300 light       lead 引言 / 长段落
     400 regular     正文 / 数据
     500 medium      列表左标签 / 强调 / 链接 hover
     600 semibold    section h2 强调 / first-column 列表标签

   ★ 列表左列原则：所有列表的左侧标签必须用
     font-size: var(--fs-base) / weight 500 / color: var(--ink-2)
     不允许做小、做淡、做 uppercase tracking。
   ============================================================ */

:root{
  /* Color */
  --bg:#faf8f5;
  --bg-2:#f2efe9;
  --ink:#1a1a1a;
  --ink-2:#2a2a2a;
  --mute:#6b6963;
  --mute-2:#9a9892;
  --line:rgba(26,26,26,.12);
  --line-strong:rgba(26,26,26,.2);
  --accent:#c93a1e;
  --accent-ink:#ffffff;
  --deep:#0e0d0b;

  /* Font family */
  --serif:"Cormorant Garamond","Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --sans:"Inter","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;

  /* Type scale — minimum 13px (no text smaller than 13) */
  --fs-display:clamp(72px,9vw,112px);
  --fs-h1:clamp(40px,5vw,72px);
  --fs-h2:clamp(32px,4.2vw,56px);
  --fs-h3:clamp(22px,2.4vw,32px);
  --fs-h4:18px;
  --fs-lg:17px;
  --fs-base:15px;
  --fs-sm:14px;
  --fs-xs:13px;
  --fs-eyebrow:13px;

  /* Layout */
  --maxw:1440px;
  --pad:clamp(24px,4vw,72px);
}
[data-theme="dark"]{
  --bg:#0e0d0b;
  --bg-2:#161513;
  --ink:#f5f2ec;
  --ink-2:#e7e3db;
  --mute:#9a9892;
  --mute-2:#6b6963;
  --line:rgba(245,242,236,.14);
  --line-strong:rgba(245,242,236,.28);
  --deep:#000000;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
html{scroll-behavior:smooth}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

/* Typography */
.serif{font-family:var(--serif);font-weight:400;letter-spacing:-.01em}
.eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute);font-weight:500}
.hair{height:1px;background:var(--line)}
.num{font-family:var(--serif);font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.cap{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);font-weight:500}

/* Layout */
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.narrow{max-width:920px;margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(80px,10vw,140px) 0;border-top:1px solid var(--line)}
.section.tight{padding:clamp(60px,7vw,100px) 0}
.section.dark{background:var(--deep);color:#f5f2ec;border-top-color:rgba(245,242,236,.15)}
.section.dark .eyebrow{color:rgba(245,242,236,.55)}
.section.dark .lead,.section.dark p{color:rgba(245,242,236,.82)}
.section.bg2{background:var(--bg-2)}
.section-head{display:grid;grid-template-columns:1fr 2.4fr;gap:48px;margin-bottom:72px}
@media(max-width:860px){.section-head{grid-template-columns:1fr;gap:16px;margin-bottom:48px}}
.section-head .kicker{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute);font-weight:500}
.section-head h2{font-family:var(--serif);font-size:clamp(32px,4.2vw,56px);line-height:1.1;letter-spacing:-.02em;margin-bottom:20px;text-wrap:balance}
.section-head h2 em{font-style:normal;color:var(--accent)}
.section-head .desc{font-size:15px;line-height:1.8;color:var(--mute);max-width:56ch;font-weight:300}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 22px;border:1px solid var(--ink);color:var(--ink);background:transparent;font-size:13px;letter-spacing:.06em;text-transform:uppercase;transition:all .2s;border-radius:0;cursor:pointer}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.primary:hover{background:#a02c15;border-color:#a02c15}
.btn.ghost{border-color:var(--line-strong);color:var(--mute)}
.btn.ghost:hover{border-color:var(--ink);color:var(--ink);background:transparent}
.btn .arr{display:inline-block;transition:transform .25s}
.btn:hover .arr{transform:translateX(4px)}
.btn-sm{padding:11px 20px;border:1px solid var(--ink);font-size:13px;letter-spacing:.06em;transition:all .2s;display:inline-flex;align-items:center;gap:8px}
.btn-sm:hover{background:var(--ink);color:var(--bg)}
.btn-sm.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-sm.primary:hover{background:#a02c15;border-color:#a02c15}

/* Tags */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute);padding:5px 10px;border:1px solid var(--line);border-radius:999px}
.tag .dot{width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* Top nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;height:72px;display:flex;align-items:center;padding:0 var(--pad);background:color-mix(in oklab, var(--bg) 80%, transparent);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;width:100%;display:flex;align-items:center;justify-content:space-between;gap:40px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:22px;letter-spacing:.02em;color:var(--ink)}
.logo .mark{width:28px;height:28px;border:1.5px solid var(--ink);border-radius:50%;display:grid;place-items:center;font-size:14px;font-family:var(--serif)}
.nav-links{display:flex;gap:36px;font-size:15px;color:var(--ink-2);align-items:center;font-weight:400}
.nav-links > a{position:relative;padding:8px 0;transition:color .2s}
.nav-links > a:hover,.nav-links > a.active{color:var(--accent)}

/* Dropdown sub-menu */
.nav-item{position:relative;display:flex;align-items:center}
.nav-item > a{position:relative;padding:8px 0;transition:color .2s;display:flex;align-items:center;gap:6px}
.nav-item > a:hover,.nav-item > a.active{color:var(--accent)}
.nav-item .caret{font-size:9px;opacity:.55;transition:transform .25s}
.nav-item:hover .caret{transform:rotate(180deg);opacity:1}

/* 桥接：trigger 下方 24px 的透明 hover 区，覆盖 dropdown 的视觉间隙，
   鼠标穿过时不会脱离 .nav-item 的 hover 状态 */
.nav-item::after{
  content:"";
  position:absolute;
  top:100%;
  left:-16px;
  right:-16px;
  height:24px;
  pointer-events:none;
}
.nav-item:hover::after{pointer-events:auto}

.dropdown{
  position:absolute;
  top:calc(100% + 16px);
  left:50%;
  transform:translateX(-50%) translateY(-8px);
  background:var(--bg);
  border:1px solid var(--line);
  padding:14px 0;
  min-width:260px;
  opacity:0;
  pointer-events:none;
  /* 关闭加 .12s 延迟，给鼠标快速移动时间 */
  transition:opacity .22s ease, transform .22s ease;
  transition-delay:.1s;
  box-shadow:0 14px 40px rgba(0,0,0,.06);
}
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown{
  opacity:1;
  pointer-events:auto;
  transform:translateX(-50%) translateY(0);
  transition-delay:0s;
}
.dropdown a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 28px;
  font-size:14px;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s, background .2s;
  font-weight:400;
}
.dropdown a:hover{color:var(--accent);background:var(--bg-2)}
.dropdown a .meta{font-size:12px;color:var(--mute-2);font-weight:400}
.dropdown a:hover .meta{color:var(--accent)}
.dropdown a.active{color:var(--accent);font-weight:500}
.dropdown hr{border:0;border-top:1px solid var(--line);margin:8px 16px}
.dropdown .group-title{padding:8px 24px 4px;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute-2);font-weight:500}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-toggle{display:none;width:32px;height:32px;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.split{display:inline-flex;border:1px solid var(--line-strong);border-radius:999px;padding:3px;font-size:12px;background:color-mix(in oklab,var(--bg) 60%,transparent)}
.split a,.split button{padding:6px 14px;border-radius:999px;color:var(--mute);letter-spacing:.06em;text-transform:uppercase;font-size:11px;transition:all .2s}
.split a.on,.split button.on{background:var(--ink);color:var(--bg)}
@media(max-width:960px){
  .nav-links{display:none;position:fixed;top:72px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:16px var(--pad) 24px;flex-direction:column;gap:0;align-items:stretch;max-height:calc(100vh - 72px);overflow-y:auto}
  .nav-links.open{display:flex}
  .nav-toggle{display:inline-flex}
  .nav-links > a,.nav-item > a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-item{display:block}
  .nav-item .caret{display:none}
  .dropdown{
    position:static;
    transform:none;
    opacity:1;
    pointer-events:auto;
    border:0;
    box-shadow:none;
    padding:8px 0 16px 16px;
    margin:0 0 8px 0;
    min-width:0;
    background:transparent;
  }
  .dropdown a{padding:10px 12px;font-size:13px}
  .dropdown a:hover{background:transparent}
  .dropdown hr{margin:8px 8px}
}

/* Breadcrumb */
.crumb{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{margin:0 10px;opacity:.5}
.breadcrumb{padding:100px var(--pad) 0;max-width:var(--maxw);margin:0 auto}

/* Page hero (sub-pages) — default top padding clears 72px fixed nav */
.p-hero{padding:128px 0 96px;border-bottom:1px solid var(--line)}
/* When breadcrumb precedes (detail pages), breadcrumb already cleared nav */
.breadcrumb + .p-hero{padding-top:48px}
.p-hero .eyebrow{margin-bottom:28px}
.p-hero h1{font-family:var(--serif);font-size:clamp(40px,5vw,72px);line-height:1.1;letter-spacing:-.02em;margin-bottom:32px;text-wrap:balance}
.p-hero h1 em{font-style:normal;color:var(--accent)}
.p-hero .lead{font-size:19px;line-height:1.75;color:var(--ink-2);max-width:640px;font-weight:300;margin-top:40px}
.p-hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:end}
@media(max-width:960px){.p-hero-grid{grid-template-columns:1fr;gap:32px}}
.p-hero .stats{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;padding-top:32px;border-top:1px solid var(--line)}
.p-hero .stats .k{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute);margin-bottom:8px}
.p-hero .stats .v{font-family:var(--serif);font-size:40px;line-height:1;letter-spacing:-.02em}
.p-hero .stats .v em{color:var(--accent);font-style:normal}
.p-hero .stats .sub{font-size:12px;color:var(--mute);margin-top:6px}

/* Homepage hero */
.hero{min-height:100vh;padding:120px var(--pad) 80px;display:flex;align-items:center;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:80px;align-items:end;width:100%;max-width:var(--maxw);margin:0 auto}
@media(max-width:1024px){.hero-grid{grid-template-columns:1fr;gap:40px}}
.hero-eyebrow{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin-bottom:32px;font-weight:500}
.hero-title{font-family:var(--serif);font-size:clamp(48px,7.5vw,112px);line-height:1.02;letter-spacing:-.02em;text-wrap:pretty}
.hero-title .small{font-size:.55em;color:var(--mute);display:block;margin-bottom:12px;font-style:italic;letter-spacing:0}
.hero-title .hot{color:var(--accent);position:relative;display:inline-block}
.hero-title .hot sup{font-size:.4em;vertical-align:super;margin-left:.1em}
.hero-sub{margin-top:36px;font-size:17px;color:var(--mute);max-width:520px;line-height:1.6}
.hero-sub b{color:var(--ink-2);font-weight:500}
.hero-ctas{margin-top:48px;display:flex;gap:16px;flex-wrap:wrap}

/* Temperature gauge in hero */
.gauge{border:1px solid var(--line);padding:36px 32px;background:var(--bg-2);position:relative}
.gauge-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px}
.gauge-head .t{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);font-weight:500}
.gauge-head .live{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.1em;font-weight:500}
.gauge-head .live .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.gauge-display{text-align:center;padding:16px 0 28px}
.gauge-num{font-family:var(--serif);font-size:clamp(96px,14vw,180px);line-height:.9;letter-spacing:-.03em;display:inline-flex;align-items:flex-start;gap:.04em;position:relative;color:var(--accent);font-variant-numeric:tabular-nums}
.gauge-num .c{font-size:.32em;color:var(--mute);margin-top:.35em;margin-left:.08em;font-weight:400}
.gauge-num::after{content:"";position:absolute;left:-24px;right:-24px;top:50%;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.25}
.gauge-label{font-size:14px;color:var(--ink-2);margin-top:12px;letter-spacing:.04em;font-weight:400}

.gauge-ladder{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.gauge-row{display:grid;grid-template-columns:130px 1fr 80px;gap:18px;align-items:center;color:var(--ink-2);padding:4px 0}
.gauge-row .brand{font-size:14px;color:var(--ink-2);font-weight:400;line-height:1.25}
.gauge-row .brand small{font-size:11px;color:var(--mute);display:block;margin-top:3px;letter-spacing:.02em}
.gauge-row .bar{height:3px;background:var(--line);position:relative;overflow:hidden;width:100%;border-radius:2px}
.gauge-row .bar i{position:absolute;left:0;top:0;bottom:0;background:var(--mute-2);width:0;transition:width 1.8s cubic-bezier(.2,.7,.2,1)}
.gauge-row.ours .brand{color:var(--accent);font-weight:600;font-size:15px}
.gauge-row.ours .bar{height:5px}
.gauge-row.ours .bar i{background:var(--accent)}
.gauge-row .val{font-variant-numeric:tabular-nums;font-family:var(--serif);font-size:18px;text-align:right;color:var(--ink-2);font-weight:500;line-height:1;letter-spacing:-.01em}
.gauge-row.ours .val{color:var(--accent);font-size:22px;font-weight:600}

/* Trust bar — 4 prominent badges with big numbers / labels */
.trust-band{margin-top:80px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust .item{padding:32px 28px;text-align:center;border-right:1px solid var(--line)}
.trust .item:last-child{border-right:0}
.trust .num{font-family:var(--serif);font-size:clamp(32px,3.6vw,48px);line-height:1;color:var(--accent);font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.trust .num small{font-size:.5em;color:var(--mute);font-weight:400;margin-left:.1em}
.trust .label{margin-top:12px;font-size:13px;color:var(--ink-2);font-weight:500;letter-spacing:.03em;line-height:1.4}
.trust .sub{margin-top:6px;font-size:11px;color:var(--mute);letter-spacing:.04em}
@media(max-width:760px){.trust{grid-template-columns:repeat(2,1fr)}.trust .item:nth-child(2){border-right:0}.trust .item:nth-child(-n+2){border-bottom:1px solid var(--line)}}

/* Temperature ladder full */
.ladder{margin-top:24px}
.ladder-group{margin-bottom:48px}
.ladder-group h4{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--mute);margin-bottom:20px;display:flex;align-items:center;gap:12px}
.ladder-group h4::after{content:"";flex:1;height:1px;background:var(--line)}
.ladder-row{display:grid;grid-template-columns:220px 1fr 160px;gap:24px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;transition:background .2s}
.ladder-row:hover{background:var(--bg-2)}
.ladder-row .brand{color:var(--ink-2);display:flex;align-items:center;gap:10px}
.ladder-row .brand small{color:var(--mute);font-size:11px;letter-spacing:.04em}
.ladder-bar{position:relative;height:10px;background:var(--bg-2);border-radius:2px;overflow:hidden}
.ladder-bar i{position:absolute;left:0;top:0;bottom:0;background:var(--mute-2);transition:width 1.5s cubic-bezier(.2,.7,.2,1)}
.ladder-row.peak .ladder-bar i{background:linear-gradient(90deg,#e58a3c,var(--accent))}
.ladder-row.peak{background:linear-gradient(90deg, rgba(201,58,30,.04),transparent)}
.ladder-row.peak .brand{color:var(--accent);font-weight:500}
.ladder-row .temp{font-family:var(--serif);font-size:22px;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink-2);white-space:nowrap}
.ladder-row.peak .temp{color:var(--accent);font-size:24px}
@media(max-width:760px){.ladder-row{grid-template-columns:1fr 110px;gap:14px}.ladder-bar{display:none}}

/* Health metrics */
.health-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.health-grid>div{background:var(--bg);padding:48px 32px}
@media(max-width:860px){.health-grid{grid-template-columns:1fr}}
.health-num{font-family:var(--serif);font-size:clamp(72px,9vw,112px);line-height:1;color:var(--accent);letter-spacing:-.02em}
.health-label{margin-top:16px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.health-pop{margin-top:24px;font-size:14px;color:var(--mute);line-height:1.7;border-top:1px solid var(--line);padding-top:20px}
.health-pop b{color:var(--ink-2);font-weight:500}
.health-extras{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:64px;padding-top:48px;border-top:1px solid var(--line)}
@media(max-width:860px){.health-extras{grid-template-columns:repeat(2,1fr);gap:24px}}
.health-extras .x h4{font-size:14px;font-weight:500;margin-bottom:8px}
.health-extras .x p{font-size:13px;color:var(--mute);line-height:1.7}

/* VS Block — 首页竞品碾压视觉对比组件 */
.vs-block{margin-bottom:72px}
.vs-block:last-child{margin-bottom:0}
.vs-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:32px;padding-bottom:18px;border-bottom:2px solid var(--ink)}
.vs-head h4{font-family:var(--serif);font-size:26px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.vs-head .tag-line{font-size:12px;color:var(--accent);letter-spacing:.16em;text-transform:uppercase;font-weight:500}

.vs-grid{display:flex;flex-direction:column;gap:0}
.vs-row{display:grid;grid-template-columns:200px 130px 1fr 320px;gap:28px;align-items:center;padding:22px 4px;border-bottom:1px solid var(--line);transition:background .2s}
.vs-row:last-child{border-bottom:0}
.vs-row .vs-brand{font-size:15px;color:var(--ink-2);font-weight:400;line-height:1.3}
.vs-row .vs-brand small{display:block;font-size:11px;color:var(--mute);margin-top:3px;letter-spacing:.02em}
.vs-row .vs-temp{font-family:var(--serif);font-size:36px;color:var(--ink-2);line-height:1;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.vs-row .vs-temp sup{font-size:.32em;color:var(--mute);margin-left:2px;font-weight:400;vertical-align:super;font-family:var(--sans)}
.vs-row .vs-bar{height:4px;background:var(--bg-2);position:relative;overflow:hidden;border-radius:2px}
.vs-row .vs-bar i{position:absolute;left:0;top:0;bottom:0;background:var(--mute-2);width:0;transition:width 1.6s cubic-bezier(.2,.7,.2,1)}
.vs-row .vs-meta{font-size:12.5px;color:var(--mute);text-align:right;line-height:1.6;letter-spacing:.02em}
.vs-row .vs-meta .yes{color:#1f5a2c;font-weight:500}
.vs-row .vs-meta .no{color:#9a2424}

.vs-row.ours{background:linear-gradient(90deg, color-mix(in oklab, var(--accent) 9%, var(--bg)) 0%, color-mix(in oklab, var(--accent) 4%, var(--bg)) 100%);border-bottom:0;margin-top:8px;padding:28px 16px;border-radius:2px}
.vs-row.ours .vs-brand{color:var(--accent);font-weight:600;font-size:17px}
.vs-row.ours .vs-temp{color:var(--accent);font-size:52px;font-weight:600}
.vs-row.ours .vs-bar{height:6px}
.vs-row.ours .vs-bar i{background:var(--accent)}
.vs-row.ours .vs-meta{color:var(--ink-2);font-weight:500;font-size:13px}

@media(max-width:960px){
  .vs-row{grid-template-columns:1fr 100px;gap:12px;padding:18px 4px}
  .vs-row .vs-bar,.vs-row .vs-meta{grid-column:span 2;text-align:left}
  .vs-row .vs-bar{margin-top:8px}
  .vs-row .vs-meta{margin-top:6px}
  .vs-row.ours .vs-temp{font-size:40px}
}

/* Compare table — Claude Design 原始风格 + 13px 最小字号 */
.compare{overflow-x:auto;border:1px solid var(--line);background:var(--bg)}
.compare table{width:100%;border-collapse:collapse;min-width:680px;font-family:var(--sans)}
.compare th,.compare td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:middle}
.compare th{
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mute);
  font-weight:500;
  background:var(--bg-2);
}
.compare td{font-size:15px;line-height:1.5;font-weight:400}
.compare td:first-child{font-weight:500;color:var(--ink-2)}
.compare tr:last-child td{border-bottom:0}
.compare tr.ours{background:color-mix(in oklab, var(--accent) 8%, var(--bg))}
.compare tr.ours td{color:var(--ink);font-weight:500}
.compare tr.ours td:first-child{color:var(--accent);font-weight:600}
.compare .compare-num{
  font-family:var(--serif);
  font-size:22px;
  color:var(--ink-2);
  font-weight:500;
  letter-spacing:-.01em;
  line-height:1;
  display:inline-block;
}
.compare tr.ours .compare-num{color:var(--accent);font-size:24px;font-weight:600}
.compare .chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:3px;
  font-size:13px;
  background:var(--bg-2);
  color:var(--mute);
  font-weight:500;
}
.compare .chip.y{background:color-mix(in oklab, #2b7a3d 15%, var(--bg));color:#1f5a2c}
.compare .chip.n{background:color-mix(in oklab, #a33 12%, var(--bg));color:#9a2424}

/* Product cards */
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:960px){.products{grid-template-columns:1fr}}
.product{background:var(--bg);padding:48px 36px;display:flex;flex-direction:column;min-height:520px;position:relative;transition:background .3s}
.product:hover{background:var(--bg-2)}
.product .img{aspect-ratio:1;background:var(--bg-2);margin-bottom:28px;position:relative;display:grid;place-items:center;color:var(--mute-2);font-size:11px;letter-spacing:.2em;text-transform:uppercase;overflow:hidden}
.product .img img{width:100%;height:100%;object-fit:contain;padding:24px;position:relative;z-index:1}
.product .img::before{content:"";position:absolute;inset:0;border:1px solid var(--line);pointer-events:none}
.product .img::after{content:"";position:absolute;inset:12px;border:1px dashed var(--line);opacity:.4;pointer-events:none}
.product h3{font-family:var(--serif);font-size:30px;font-weight:500;letter-spacing:-.01em;margin-bottom:8px}
.product .price{font-family:var(--serif);font-size:20px;color:var(--accent);margin-bottom:16px}
.product .spec{font-size:13px;color:var(--mute);margin-bottom:20px;line-height:1.7}
.product .replace{border-top:1px solid var(--line);padding-top:20px;margin-top:auto;margin-bottom:20px}
.product .replace .big{font-family:var(--serif);font-size:46px;line-height:1;color:var(--ink)}
.product .replace .big span{color:var(--accent)}
.product .replace .lbl{font-size:12px;color:var(--mute);letter-spacing:.08em;margin-top:8px}
.product .feat{font-size:13px;color:var(--mute);display:flex;flex-direction:column;gap:6px;margin-bottom:20px;list-style:none}
.product .feat li{display:flex;gap:8px}
.product .feat li::before{content:"·";color:var(--accent);font-weight:bold}
.product.coming{background:linear-gradient(180deg, var(--bg-2),var(--bg))}
.product.coming .tag{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* Commercial */
.comm{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-bottom:72px}
@media(max-width:860px){.comm{grid-template-columns:1fr;gap:24px}}
.comm .metric{border-top:2px solid var(--ink);padding-top:24px}
.comm .metric .big{font-family:var(--serif);font-size:clamp(80px,10vw,132px);line-height:.95;letter-spacing:-.02em;color:var(--accent)}
.comm .metric .lbl{margin-top:16px;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2)}
.comm .metric .det{margin-top:14px;font-size:13px;color:var(--mute);line-height:1.7}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cases>div{background:var(--bg);padding:36px}
@media(max-width:860px){.cases{grid-template-columns:1fr}}
.case .yr{font-family:var(--serif);font-size:68px;line-height:1;color:var(--ink)}
.case .yr sup{font-size:.3em;vertical-align:super;margin-left:.15em;color:var(--accent)}
.case h4{font-size:15px;margin:16px 0 6px;font-weight:500}
.case p{font-size:13px;color:var(--mute);line-height:1.7}

/* Partners */
.partners-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.partners-grid>div{background:var(--bg);padding:48px 28px;min-height:260px;display:flex;flex-direction:column;justify-content:space-between}
@media(max-width:860px){.partners-grid{grid-template-columns:repeat(2,1fr)}}
.partner .logo-slot{font-family:var(--serif);font-size:28px;color:var(--ink);letter-spacing:-.01em;margin-bottom:16px}
.partner .desc{font-size:12px;color:var(--mute);line-height:1.7}
.partner .role{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-top:16px}

/* Founder */
.founder{background:var(--deep);color:#f5f2ec;padding:clamp(100px,12vw,180px) 0}
.founder .wrap{max-width:960px}
.founder .eyebrow{color:rgba(245,242,236,.5)}
.founder h2{font-family:var(--serif);font-size:clamp(40px,6vw,80px);line-height:1.1;letter-spacing:-.02em;margin:24px 0 56px;text-wrap:pretty}
.founder p{font-size:17px;line-height:1.8;color:rgba(245,242,236,.78);margin-bottom:24px;max-width:720px}
.founder p.pull{font-family:var(--serif);font-size:clamp(26px,3vw,34px);line-height:1.4;color:#f5f2ec;margin:48px 0;padding-left:32px;border-left:2px solid var(--accent);font-style:italic}
.founder .sign{font-family:var(--serif);font-size:20px;margin-top:48px;color:#f5f2ec}
.founder .sign small{display:block;font-size:12px;color:rgba(245,242,236,.5);letter-spacing:.16em;text-transform:uppercase;margin-top:6px;font-family:var(--sans)}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:32px;margin-top:80px;padding-top:32px;border-top:1px solid rgba(245,242,236,.15)}
@media(max-width:860px){.timeline{grid-template-columns:repeat(2,1fr)}}
.timeline .yr{font-family:var(--serif);font-size:34px;color:#f5f2ec}
.timeline .ev{font-size:12px;color:rgba(245,242,236,.55);margin-top:8px;line-height:1.6}

/* Mission + final CTA */
.mission-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.mission-grid>div{background:var(--bg);padding:48px}
@media(max-width:760px){.mission-grid{grid-template-columns:1fr}}
.mission h4{font-family:var(--serif);font-size:24px;font-weight:500;margin-bottom:12px}
.mission h4::before{content:attr(data-n);font-family:var(--sans);font-size:11px;color:var(--accent);letter-spacing:.2em;margin-right:12px;vertical-align:middle}
.mission p{font-size:14px;color:var(--mute);line-height:1.8}
.final-cta{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);margin-top:64px;border:1px solid var(--line)}
.final-cta>a{background:var(--bg);padding:56px;transition:background .3s;cursor:pointer;display:block}
.final-cta>a:hover{background:var(--bg-2)}
.final-cta .k{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--mute);margin-bottom:20px}
.final-cta h3{font-family:var(--serif);font-size:36px;font-weight:500;letter-spacing:-.01em;margin-bottom:12px;line-height:1.2}
.final-cta p{font-size:14px;color:var(--mute);margin-bottom:32px;line-height:1.7}
.final-cta .arrow{font-family:var(--serif);font-size:28px;color:var(--accent);display:inline-flex;align-items:center;gap:10px;transition:gap .2s}
.final-cta>a:hover .arrow{gap:18px}
@media(max-width:760px){.final-cta{grid-template-columns:1fr}}

/* Card */
.card{padding:40px;border:1px solid var(--line);background:var(--bg);transition:border-color .2s,transform .2s;display:block;color:var(--ink)}
.card:hover{border-color:var(--ink)}
.card h3{font-family:var(--serif);font-size:32px;line-height:1.15;margin-bottom:12px;letter-spacing:-.01em}
.card p{font-size:14px;line-height:1.75;color:var(--mute);font-weight:300}
.card .num{font-family:var(--serif);font-size:14px;color:var(--mute-2);font-style:italic;margin-bottom:20px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.card-grid>*{background:var(--bg)}
@media(max-width:960px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.card-grid{grid-template-columns:1fr}}

/* Related */
.related{padding:120px 0;background:var(--deep);color:#f5f2ec}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(245,242,236,.15);max-width:var(--maxw);margin:0 auto}
@media(max-width:760px){.related-grid{grid-template-columns:1fr}}
.related-grid>a{background:var(--deep);padding:48px;transition:background .3s;display:block;color:inherit}
.related-grid>a:hover{background:#1a1917}
.related-grid h5{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:rgba(245,242,236,.5);margin-bottom:20px}
.related-grid h3{font-family:var(--serif);font-size:36px;line-height:1.2;margin-bottom:16px}
.related-grid p{font-size:14px;color:rgba(245,242,236,.7);line-height:1.7;margin-bottom:32px}
.related-grid .arr{font-family:var(--serif);font-size:20px;color:var(--accent);display:inline-flex;gap:10px;transition:gap .2s}
.related-grid a:hover .arr{gap:18px}

/* Site footer */
footer.site{background:var(--deep);color:rgba(245,242,236,.7);padding:72px 0 32px;font-size:13px;line-height:1.8}
footer.site .wrap{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
@media(max-width:860px){footer.site .wrap{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:560px){footer.site .wrap{grid-template-columns:1fr}}
footer.site h5{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:#f5f2ec;margin-bottom:16px}
footer.site a{color:rgba(245,242,236,.7);transition:color .2s}
footer.site a:hover{color:#f5f2ec}
footer.site .logo{color:#f5f2ec;margin-bottom:20px}
footer.site .logo .mark{border-color:#f5f2ec}
footer.site .foot-bot{grid-column:1/-1;border-top:1px solid rgba(245,242,236,.15);padding-top:24px;margin-top:24px;display:flex;justify-content:space-between;font-size:12px;color:rgba(245,242,236,.45);flex-wrap:wrap;gap:16px}
footer.site .foot-meta{display:flex;flex-direction:column;gap:8px;color:rgba(245,242,236,.55)}

/* Section header for sub-pages */
.sh-kicker{font-family:var(--serif);font-size:64px;color:var(--bg-2);line-height:.95;font-style:italic;letter-spacing:-.03em;word-break:break-word;overflow-wrap:break-word}
[data-theme="dark"] .sh-kicker{color:#1a1917}
.sh-title{font-family:var(--serif);font-size:clamp(36px,4.5vw,64px);line-height:1.1;letter-spacing:-.02em;text-wrap:balance;max-width:18ch}
.sh-title em{color:var(--accent);font-style:normal}
.sh-sub{margin-top:24px;color:var(--mute);max-width:52ch;font-size:15px;line-height:1.7}

/* Floating jump nav */
.jump{position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:8px}
@media(max-width:1100px){.jump{display:none}}
.jump a{display:flex;align-items:center;gap:10px;color:var(--mute-2);font-size:11px;letter-spacing:.12em;text-transform:uppercase;opacity:.4;transition:opacity .2s,color .2s;padding:4px 0;justify-content:flex-end}
.jump a::after{content:"";display:block;width:16px;height:1px;background:currentColor}
.jump a:hover,.jump a.active{opacity:1;color:var(--accent)}
.jump a.active::after{width:36px}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity 1s cubic-bezier(.2,.7,.2,1), transform 1s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* Plate placeholder */
.plate{position:relative;overflow:hidden;background:var(--bg-2);border:1px solid var(--line);aspect-ratio:4/3;display:grid;place-items:center;color:var(--mute-2);font-size:12px;letter-spacing:.18em;text-transform:uppercase}
.plate.dark{background:#1a1917;border-color:rgba(245,242,236,.1);color:rgba(245,242,236,.4)}
.plate img{width:100%;height:100%;object-fit:contain;padding:24px}
.plate .cap{position:absolute;bottom:16px;left:16px;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute);background:color-mix(in oklab,var(--bg) 70%,transparent);padding:5px 10px}

/* Premium spec section */
.spec-hero{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:80px}
.spec-hero-item{background:var(--bg);padding:48px 36px}
@media(max-width:960px){.spec-hero{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.spec-hero{grid-template-columns:1fr}}
.spec-num{font-family:var(--serif);font-size:clamp(56px,7vw,88px);line-height:1;letter-spacing:-.02em;color:var(--accent)}
.spec-num sup{font-size:.32em;color:var(--mute);margin-left:.08em;font-family:var(--sans);font-weight:300;vertical-align:super;letter-spacing:0}
.spec-cat{margin-top:24px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2);font-weight:500}
.spec-note{margin-top:10px;font-size:13px;color:var(--mute);line-height:1.65}

.spec-table{display:grid;grid-template-columns:repeat(3,1fr);gap:64px}
@media(max-width:960px){.spec-table{grid-template-columns:1fr;gap:48px}}
.spec-col-title{font-family:var(--serif);font-size:22px;font-weight:500;letter-spacing:-.01em;margin-bottom:24px;padding-bottom:16px;border-bottom:2px solid var(--ink)}
.spec-row{display:flex;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);align-items:baseline}
.spec-row:last-child{border-bottom:0}
/* 左列：明显 · 不淡 · 不小 */
.spec-row .spec-k{color:var(--ink-2);font-size:var(--fs-base);font-weight:500;flex-shrink:0;letter-spacing:0}
.spec-row .spec-v{color:var(--ink-2);text-align:right;font-weight:400;font-size:var(--fs-base)}
.spec-row .spec-v strong{color:var(--ink);font-weight:600}

.spec-extra{margin-top:64px;padding:28px 36px;background:var(--bg-2);border-left:2px solid var(--accent);font-size:14px;line-height:1.85;color:var(--mute)}
.spec-extra strong{color:var(--ink-2);font-weight:500}

/* Key-value list (左列必须明显·不淡·不小) */
.kv{border-top:1px solid var(--line)}
.kv .row{display:grid;grid-template-columns:240px 1fr;gap:32px;padding:22px 0;border-bottom:1px solid var(--line);align-items:baseline}
@media(max-width:760px){.kv .row{grid-template-columns:1fr;gap:6px}}
.kv .k{font-size:var(--fs-base);font-weight:500;color:var(--ink-2);letter-spacing:0;text-transform:none}
.kv .v{font-size:var(--fs-base);line-height:1.7;color:var(--ink-2);font-weight:400}
.kv .v strong{font-weight:600;color:var(--ink)}
.section.dark .kv{border-top-color:rgba(245,242,236,.15)}
.section.dark .kv .row{border-bottom-color:rgba(245,242,236,.15)}
.section.dark .kv .k{color:rgba(245,242,236,.85)}
.section.dark .kv .v{color:rgba(245,242,236,.85)}

/* Forms */
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:24px}
@media(max-width:760px){.form-row{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}
.field input,.field textarea,.field select{padding:14px 16px;border:1px solid var(--line-strong);background:var(--bg);font-family:var(--sans);font-size:15px;color:var(--ink);transition:border-color .2s;border-radius:0}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--accent)}
.field textarea{min-height:120px;resize:vertical}

/* Platform Architecture (Technology overview) */
.platform-arch{margin-top:48px;display:flex;flex-direction:column;align-items:center;gap:24px}
.arch-core{width:100%;max-width:880px;padding:48px 56px;background:linear-gradient(180deg,var(--ink) 0%,#0e0e0c 100%);color:#f5f2ec;text-align:center;border:1px solid var(--ink)}
.arch-core-eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:500;margin-bottom:18px}
.arch-core-title{font-family:var(--serif);font-size:clamp(34px,4.4vw,56px);line-height:1.1;letter-spacing:-.02em;margin-bottom:14px}
.arch-core-meta{font-size:14px;color:rgba(245,242,236,.7);line-height:1.7;margin-bottom:28px}
.arch-modules{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.arch-modules span{font-size:12px;letter-spacing:.04em;color:#f5f2ec;background:rgba(245,242,236,.08);border:1px solid rgba(245,242,236,.18);padding:8px 14px;border-radius:0}
.arch-arrow{font-size:11px;letter-spacing:.4em;color:var(--accent);font-weight:500;padding:8px 0}
.arch-grid{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:980px){.arch-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.arch-grid{grid-template-columns:1fr}}
.arch-col{background:var(--bg);padding:32px 24px;display:flex;flex-direction:column;justify-content:space-between;min-height:240px}
.arch-col-future{background:linear-gradient(180deg,var(--bg-2),var(--bg))}
.arch-col-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px;border-bottom:1px solid var(--line);padding-bottom:12px}
.arch-tag{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);font-weight:600}
.arch-tag.accent{color:var(--accent)}
.arch-cnt{font-family:var(--serif);font-size:20px;color:var(--ink);font-weight:500}
.arch-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;flex:1}
.arch-col ul li{font-size:14px;color:var(--ink-2);line-height:1.6;padding-left:14px;position:relative}
.arch-col ul li::before{content:"";position:absolute;left:0;top:.65em;width:6px;height:1px;background:var(--accent)}
.arch-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--mute);letter-spacing:.04em}
.arch-tagline{margin-top:24px;text-align:center;max-width:780px;padding:0 24px}
.arch-tagline p{font-family:var(--serif);font-size:clamp(17px,2vw,21px);line-height:1.7;color:var(--ink-2);font-weight:400}
.arch-tagline em{color:var(--accent);font-style:normal;font-weight:600}

/* Footer Social Row (full-width row above foot-bot) */
footer.site .foot-social-row{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px 24px;padding-top:32px;margin-top:24px;border-top:1px solid rgba(245,242,236,.15)}
.foot-social-label{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:rgba(245,242,236,.55);font-weight:500;flex-shrink:0}
.foot-social{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}
.foot-social a{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;background:rgba(245,242,236,.06);border:1px solid rgba(245,242,236,.15);color:rgba(245,242,236,.75);transition:all .2s}
.foot-social a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.foot-social a svg{width:15px;height:15px;display:block;fill:currentColor}
@media(max-width:760px){
  footer.site .foot-social-row{flex-direction:column;align-items:flex-start;gap:14px}
  .foot-social{justify-content:flex-start}
}
/* foot-bot border above is now redundant (social-row already provides one) */
footer.site .foot-social-row + .foot-bot{border-top:0;padding-top:0;margin-top:0}

/* Utility */
.hang{margin-top:-40px}
.spacer-md{height:48px}
.spacer-lg{height:96px}