/* ============================================================
   Clash代理 · base.css
   「黎明立交枢纽」设计系统
   —— 设计令牌 / reset / 排版 / 顶部胶囊导航 / 页脚 / Hero 全景 / 通用卡片 / reveal / 响应式
   ============================================================ */

:root{
  /* ---- 基础色 ---- */
  --bg:#FFFFFF;
  --bg-panel:#F6F7FA;
  --bg-panel2:#2E3D52;
  --slate:#2E3D52;
  --border:#DFE4EC;
  --accent:#F2A054;
  --accent-dark:#D67F2C;
  --ink:#26303E;
  --ink-muted:#66717F;
  --white:#FFFFFF;
  --success:#2E9E6B;
  --warn:#C9922B;
  --error:#D6543C;

  /* ---- 语义浅底 ---- */
  --accent-soft:rgba(242,160,84,.14);
  --success-soft:rgba(46,158,107,.09);
  --warn-soft:rgba(201,146,43,.1);
  --error-soft:rgba(214,84,60,.09);

  /* ---- 黎明立交场景 ---- */
  --sky-deep:#202C3E;
  --sky-mid:#2E3D52;
  --sky-warm:#A97350;
  --sky-gold:#F2A054;
  --ground-hi:#2B3A52;
  --ground-lo:#1D2735;
  --road:#233042;
  --booth:#1E2938;
  --silhouette:#161F2B;
  --window-glow:#FFD9A8;

  /* ---- 深底玻璃层 ---- */
  --sign-bg:rgba(35,47,66,.92);
  --sign-solid:#26324A;
  --glass:rgba(255,255,255,.08);
  --glass-strong:rgba(255,255,255,.15);
  --glass-border:rgba(255,255,255,.22);
  --nav-bg:rgba(27,37,53,.78);
  --nav-solid:#222E41;
  --veil:rgba(16,24,36,.55);
  --txt-on-dark:rgba(255,255,255,.86);
  --txt-on-dark-dim:rgba(255,255,255,.6);
  --dot-sep:rgba(255,255,255,.35);
  --edge-line:rgba(255,255,255,.5);
  --ghost-border:rgba(255,255,255,.55);
  --code-ink:#E9EEF6;

  /* ---- 蜜桃金微光 ---- */
  --accent-border:rgba(242,160,84,.55);
  --accent-glow:rgba(242,160,84,.26);
  --accent-glow-soft:rgba(242,160,84,.12);

  /* ---- 投影 ---- */
  --shadow-cta:0 14px 30px rgba(214,127,44,.38);
  --shadow-cta-hover:0 18px 38px rgba(214,127,44,.46);
  --shadow-card:0 16px 34px rgba(16,24,36,.42);
  --shadow-nav:0 12px 32px rgba(16,24,36,.35);
  --shadow-lip:0 -18px 44px rgba(16,24,36,.22);
  --shadow-fab:0 12px 28px rgba(214,127,44,.42);
  --shadow-soft:0 16px 40px rgba(38,48,62,.08);
  --shadow-lift:0 22px 48px rgba(38,48,62,.12);
  --text-shade:0 2px 30px rgba(16,24,36,.35);

  /* ---- 曲线语言(与匝道弧线共用) ---- */
  --r-lg:22px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --r-lip:32px;

  /* ---- 字体 ---- */
  --font-display:"Inter","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* ---- 版心留白 ---- */
  --gutter:24px;
}

/* ============================================================
   Reset
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{
  font-family:var(--font-body);
  font-size:16px;
  background:var(--bg);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img,svg{max-width:100%}
img{height:auto}
button{font:inherit;color:inherit}
code{
  font-family:var(--font-mono);
  font-size:.9em;
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:.15em .45em;
  overflow-wrap:anywhere;
}
pre code{background:none;border:0;padding:0;font-size:inherit;overflow-wrap:normal;white-space:pre}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent-soft);color:var(--ink)}

/* ============================================================
   版心与区块节奏
   ============================================================ */
.wrap{
  width:100%;
  max-width:1168px;
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wrap-narrow{max-width:880px}
.sec{
  padding-top:88px;
  padding-bottom:88px;
  position:relative;
  overflow-x:clip;
}
.sec-alt{background:var(--bg-panel)}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-head.is-center{margin-inline:auto;text-align:center}
.section-label{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.22em;
  color:var(--ink-muted);
  text-transform:uppercase;
}
.sec-title{
  margin-top:12px;
  font-family:var(--font-display);
  font-size:clamp(26px,3vw,34px);
  font-weight:800;
  line-height:1.25;
  color:var(--ink);
}
.sec-lede{
  margin-top:12px;
  font-size:15.5px;line-height:1.85;
  color:var(--ink-muted);
}

/* 网格助手 */
.grid-2,.grid-3,.grid-4{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0}

/* ============================================================
   顶部悬浮胶囊导航(header.js 注入 #site-header;
   design-preview 用同构静态 .site-headbar)
   ============================================================ */
#site-header,.site-headbar{
  position:fixed;top:0;left:0;right:0;
  z-index:60;
  padding:24px var(--gutter) 0;
  pointer-events:none;
}
#site-header .topbar,#site-header .nav-veil,#site-header .drawer,
.site-headbar .topbar,.site-headbar .nav-veil,.site-headbar .drawer{
  pointer-events:auto;
}
.topbar{
  position:relative;z-index:3;
  width:min(1264px,100%);
  margin:0 auto;
  display:flex;align-items:center;
  padding:10px 14px 10px 16px;
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow-nav);
}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--white)}
.brand-mark{display:block;width:34px;height:34px;flex-shrink:0}
.brand-name{font-family:var(--font-display);font-size:17px;font-weight:700;letter-spacing:.02em}
.nav-main{margin-left:auto}
.nav-list{display:flex;align-items:center}
.nav-list li{display:flex;align-items:center}
.nav-list li + li::before{
  content:"·";
  color:var(--dot-sep);
  padding:0 13px;
  font-weight:700;
}
.nav-list a{
  color:var(--txt-on-dark);
  font-size:14.5px;
  padding:6px 2px;
  border-radius:var(--r-sm);
  transition:color .18s ease;
}
.nav-list a:hover,.nav-list a:focus-visible{color:var(--accent)}
.nav-list a.is-on{color:var(--white);font-weight:600;border-bottom:2px solid var(--accent)}

/* 工具区:语言切换 + 汉堡(与品牌/导航/抽屉互为兄弟节点) */
.nav-tools{display:flex;align-items:center}
.lang-box{position:relative}
.lang-switch{
  display:inline-flex;align-items:center;gap:6px;
  margin-left:18px;padding:7px 14px 7px 18px;
  background:none;border:0;
  border-left:1px solid var(--glass-border);
  border-radius:0;
  color:var(--txt-on-dark-dim);
  font-family:var(--font-body);
  font-size:13.5px;
  cursor:pointer;
  transition:color .18s ease;
}
.lang-switch:hover{color:var(--white)}
.lang-menu{
  display:none;
  position:absolute;right:0;top:calc(100% + 14px);
  min-width:172px;
  padding:8px;
  background:var(--nav-solid);
  border:1px solid var(--glass-border);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-nav);
  z-index:5;
}
.lang-menu.open{display:block}
.lang-menu a{
  display:block;width:100%;
  padding:10px 14px;
  border-radius:var(--r-sm);
  color:var(--txt-on-dark);
  font-size:14px;
}
.lang-menu a:hover{background:var(--glass);color:var(--white)}
.lang-menu a.is-cur{color:var(--accent);font-weight:600}

.nav-burger{
  display:none;
  min-width:44px;min-height:44px;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
  margin-left:6px;
  background:none;border:0;
  border-radius:var(--r-sm);
  cursor:pointer;
}
.nav-burger span{
  display:block;width:20px;height:2px;
  border-radius:2px;
  background:var(--white);
  transition:transform .2s ease,opacity .2s ease;
}
html.nav-open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
html.nav-open .nav-burger span:nth-child(2){opacity:0}
html.nav-open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 遮罩(层级必须低于抽屉) */
.nav-veil{
  display:none;
  position:fixed;inset:0;z-index:1;
  background:var(--veil);
}
html.nav-open .nav-veil{display:block}

/* 移动端抽屉:实色底、整行可点、可滚动不穿透 */
.drawer{
  display:none;
  position:absolute;
  left:var(--gutter);right:var(--gutter);
  top:calc(100% + 12px);
  z-index:2;
  padding:10px;
  background:var(--nav-solid);
  border:1px solid var(--glass-border);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-nav);
  max-height:calc(100dvh - 130px);
  overflow-y:auto;
  overscroll-behavior:contain;
}
html.nav-open .drawer{display:block}
.drawer-list{display:flex;flex-direction:column}
.drawer-list a{
  display:block;width:100%;
  min-height:44px;
  padding:13px 16px;
  border-radius:var(--r-sm);
  color:var(--txt-on-dark);
  font-size:16px;
}
.drawer-list a:hover{background:var(--glass);color:var(--white)}
.drawer-list a.is-on,.drawer-list a.is-cur{color:var(--accent);font-weight:600}
.drawer-cap{
  margin-top:8px;
  padding:14px 16px 6px;
  border-top:1px solid var(--glass-border);
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--txt-on-dark-dim);
}

/* ============================================================
   Hero:黎明立交全景舞台
   ============================================================ */
.hero{
  position:relative;
  height:calc(100vh - 8px);
  min-height:820px;
  overflow:hidden;
  background:var(--slate);
}
.hero-canvas{position:absolute;inset:0;overflow:hidden}
.hero-scene{display:block;width:100%;height:100%}

/* SVG 渐变停靠点(颜色全部走令牌) */
.st-sky0{stop-color:var(--sky-deep)}
.st-sky1{stop-color:var(--sky-mid)}
.st-sky2{stop-color:var(--sky-warm)}
.st-sky3{stop-color:var(--sky-gold)}
.st-gnd0{stop-color:var(--ground-hi)}
.st-gnd1{stop-color:var(--ground-lo)}
.st-dawn0{stop-color:var(--accent);stop-opacity:.55}
.st-dawn1{stop-color:var(--accent);stop-opacity:0}
.st-band0{stop-color:var(--accent);stop-opacity:.95}
.st-band1{stop-color:var(--accent);stop-opacity:.08}
.st-win0{stop-color:var(--window-glow)}
.st-win1{stop-color:var(--accent)}

/* SVG 造型类 */
.star{fill:var(--white)}
.horizon-line{stroke:var(--accent);stroke-width:1;stroke-opacity:.32}
.road-body{fill:var(--road)}
.road-edge{stroke:var(--edge-line);stroke-width:2;fill:none;stroke-linecap:round}
.road-dash{stroke:var(--white);stroke-opacity:.8;stroke-width:3;fill:none;stroke-dasharray:16 20;stroke-linecap:round}
.ramp-bed{fill:none;stroke:var(--white);stroke-opacity:.14;stroke-width:11;stroke-linecap:round}
.ramp-dash{fill:none;stroke:var(--white);stroke-opacity:.85;stroke-width:1.6;stroke-dasharray:9 12;stroke-linecap:round}
.booth-body{fill:var(--booth);stroke:var(--glass-border);stroke-width:1}
.booth-roof{fill:var(--booth);stroke:var(--accent);stroke-width:1;stroke-opacity:.6}
.booth-base{fill:var(--silhouette)}
.cat{fill:var(--silhouette)}
.grain{opacity:.05}

.dawn-glow{
  transform-box:fill-box;
  transform-origin:center;
  animation:dawnDrift 32s ease-in-out infinite alternate;
}
@keyframes dawnDrift{
  from{transform:translateX(-30px)}
  to{transform:translateX(30px)}
}

/* ---- 大字报层 ---- */
.hero-inner{
  position:relative;z-index:4;
  max-width:1120px;margin:0 auto;
  padding:148px 24px 0;
  text-align:center;color:var(--white);
}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;
  color:var(--txt-on-dark);
  max-width:100%;overflow:hidden;
}
.kicker i{
  width:7px;height:7px;border-radius:50%;
  flex-shrink:0;
  background:var(--accent);
  box-shadow:0 0 8px var(--accent-glow);
}
.hero h1{
  margin-top:22px;
  font-family:var(--font-display);
  font-size:clamp(52px,5.4vw,78px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:.01em;
  text-shadow:var(--text-shade);
}
.hx{
  background:linear-gradient(115deg,var(--window-glow) 0%,var(--accent) 55%,var(--accent-dark) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin:18px auto 0;
  max-width:760px;
  font-size:18px;line-height:1.75;
  color:var(--txt-on-dark);
}
.hero-sub strong{color:var(--accent);font-weight:600}

.cta-row{
  margin-top:32px;
  display:flex;justify-content:center;gap:16px;flex-wrap:wrap;
}
.chip-row{
  margin-top:28px;
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--txt-on-dark);
  max-width:100%;overflow:hidden;
}
.chip i{width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0}
.chip-lite{background:var(--bg-panel);border-color:var(--border);color:var(--ink-muted)}
.chip-lite i{background:var(--accent-dark)}

/* ---- 匝道尽头:五枚平台出口牌 ---- */
.exit-row{
  position:absolute;
  left:50%;bottom:86px;
  transform:translateX(-50%);
  z-index:4;
  display:flex;align-items:flex-start;gap:64px;
}
.exit{
  position:relative;
  display:flex;align-items:center;justify-content:center;gap:10px;
  min-width:158px;
  padding:15px 20px;
  background:var(--sign-bg);
  border:1px solid var(--accent-border);
  border-radius:var(--r-md);
  color:var(--white);
  box-shadow:0 0 0 1px var(--accent-glow-soft),0 0 24px var(--accent-glow),var(--shadow-card);
  transition:transform .18s ease;
}
.exit::before{
  content:"";
  position:absolute;top:-2px;left:50%;
  transform:translateX(-50%);
  width:34px;height:3px;
  border-radius:var(--r-pill);
  background:var(--accent);
  box-shadow:0 0 10px var(--accent-glow);
}
.exit:nth-child(1),.exit:nth-child(5){transform:translateY(30px)}
.exit:nth-child(2),.exit:nth-child(4){transform:translateY(14px)}
.exit:hover{transform:translateY(-4px)}
.exit:nth-child(1):hover,.exit:nth-child(5):hover{transform:translateY(26px)}
.exit:nth-child(2):hover,.exit:nth-child(4):hover{transform:translateY(10px)}
.exit svg{width:22px;height:22px;flex-shrink:0}
.exit-name{font-size:15px;font-weight:600;letter-spacing:.02em}
.icn{fill:var(--white)}
.icn-hole{fill:var(--sign-solid)}
.icn-line{fill:none;stroke:var(--white);stroke-width:1.6;stroke-linecap:round}

/* ---- 首屏之下:纯白区块的一线边缘 ---- */
.section-next{
  position:relative;z-index:7;
  margin-top:-34px;
  background:var(--bg);
  border-radius:var(--r-lip) var(--r-lip) 0 0;
  box-shadow:var(--shadow-lip);
  padding:46px var(--gutter) 96px;
  text-align:center;
  overflow-x:clip;
}
.section-next h2{
  margin-top:12px;
  font-family:var(--font-display);
  font-size:24px;font-weight:700;
  color:var(--ink);
}
.section-next p{
  margin:10px auto 0;max-width:560px;
  font-size:15px;line-height:1.8;
  color:var(--ink-muted);
}

/* ============================================================
   子页面头带(为固定导航提供暗色停靠)
   ============================================================ */
.page-crown{
  position:relative;
  background:linear-gradient(180deg,var(--sky-deep) 0%,var(--sky-mid) 62%,var(--sky-warm) 130%);
  color:var(--white);
  padding-top:156px;
  padding-bottom:72px;
  border-radius:0 0 var(--r-lip) var(--r-lip);
  overflow-x:clip;
  overflow-y:clip;
}
.page-crown::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-border),transparent);
}
.crown-kicker{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--txt-on-dark-dim);
}
.page-crown h1{
  margin-top:14px;
  font-family:var(--font-display);
  font-size:clamp(32px,4vw,48px);
  font-weight:800;line-height:1.2;
  text-shadow:var(--text-shade);
}
.crown-lede{
  margin-top:14px;max-width:720px;
  font-size:16px;line-height:1.8;
  color:var(--txt-on-dark);
}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  height:54px;padding:0 32px;
  border:0;border-radius:var(--r-pill);
  font-family:var(--font-display);
  font-size:16px;font-weight:700;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease;
}
.btn svg{width:18px;height:18px;flex-shrink:0}
.btn-primary{
  background:linear-gradient(180deg,var(--accent),var(--accent-dark));
  color:var(--ink);
  box-shadow:var(--shadow-cta);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-cta-hover)}
.btn-ghost{
  border:1.5px solid var(--ghost-border);
  color:var(--white);
  background:transparent;
}
.btn-ghost:hover{background:var(--glass);transform:translateY(-2px)}
.btn-outline{
  border:1.5px solid var(--border);
  background:var(--bg);
  color:var(--ink);
}
.btn-outline:hover{border-color:var(--slate);transform:translateY(-2px)}
.btn-sm{height:44px;padding:0 24px;font-size:14.5px}
.ico-btn{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-dark);font-weight:600;font-size:15px;
  transition:gap .18s ease;
}
.link-more:hover{gap:10px}

/* ============================================================
   通用卡片 / 面板
   ============================================================ */
.card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-soft);
  padding:28px;
  min-width:0;
}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.8;color:var(--ink-muted)}
.card-hover{transition:transform .18s ease,box-shadow .18s ease}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.panel-dark{
  background:var(--bg-panel2);
  color:var(--txt-on-dark);
  border-radius:var(--r-lg);
  padding:34px;
  overflow-x:clip;
}
.panel-dark h3{color:var(--white)}

/* 装饰性微倾斜(禁止用于长内容容器;窄屏一律拉平) */
.tilt-l{transform:rotate(-.6deg)}
.tilt-r{transform:rotate(.6deg)}

/* 状态圆点 */
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0}
.dot-ok{background:var(--success)}
.dot-warn{background:var(--warn)}
.dot-err{background:var(--error)}
.dot-accent{background:var(--accent)}
.dot-pulse{animation:dotPulse 2.4s ease-in-out infinite}
@keyframes dotPulse{
  0%,100%{box-shadow:0 0 0 0 var(--accent-glow)}
  50%{box-shadow:0 0 0 6px rgba(242,160,84,0)}
}

/* ============================================================
   正文排版(.prose:教程/深文档/博客正文)
   ============================================================ */
.prose{line-height:1.85;color:var(--ink)}
.prose h2{
  margin:2.1em 0 .7em;
  font-size:clamp(22px,2.4vw,27px);
  font-weight:800;line-height:1.35;
}
.prose h3{margin:1.7em 0 .6em;font-size:19px;font-weight:700}
.prose p{margin:0 0 1.1em}
.prose a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}
.prose ul{margin:0 0 1.2em;padding-left:1.4em;list-style:disc}
.prose ul li{margin:.4em 0}
.prose ol{margin:0 0 1.4em;list-style:none;counter-reset:step}
.prose ol>li{
  counter-increment:step;
  position:relative;
  padding-left:46px;
  margin:.95em 0;
}
.prose ol>li::before{
  content:counter(step);
  position:absolute;left:0;top:.05em;
  width:28px;height:28px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-family:var(--font-mono);
  font-size:13px;font-weight:700;
}
.prose pre{
  margin:0 0 1.3em;
  padding:20px 22px;
  background:var(--slate);
  color:var(--code-ink);
  border-radius:var(--r-md);
  font-family:var(--font-mono);
  font-size:13.5px;line-height:1.7;
  overflow-x:auto;
}
.prose blockquote{
  margin:0 0 1.2em;
  padding:14px 20px;
  border-left:4px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--bg-panel);
  color:var(--ink-muted);
}
.prose img{border-radius:var(--r-md)}

/* ============================================================
   页脚(footer.js 注入 #site-footer)
   ============================================================ */
.site-footer{
  position:relative;
  background:var(--bg-panel2);
  color:var(--txt-on-dark);
  overflow-x:clip;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,transparent 8%,var(--accent) 50%,transparent 92%);
  opacity:.55;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1.1fr .8fr;
  gap:40px;
  padding-top:64px;
  padding-bottom:48px;
}
.footer-grid>*{min-width:0}
.f-brand .brand-name{color:var(--white)}
.f-intro{
  margin-top:14px;
  font-size:14px;line-height:1.85;
  color:var(--txt-on-dark-dim);
}
.f-title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--txt-on-dark-dim);
}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col a{
  display:inline-block;
  font-size:14px;
  color:var(--txt-on-dark);
  transition:color .18s ease;
}
.f-col a:hover{color:var(--accent)}
.f-col a.is-cur{color:var(--accent);font-weight:600}
.f-legal{border-top:1px solid var(--glass-border)}
.f-legal-in{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding-top:22px;padding-bottom:22px;
  font-size:13px;
  color:var(--txt-on-dark-dim);
}
.f-legal-in a{color:var(--txt-on-dark)}
.f-legal-in a:hover{color:var(--accent)}

/* ============================================================
   滚动淡入
   ============================================================ */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.shown{opacity:1;transform:translateY(0)}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .dawn-glow,.dot-pulse{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.exit,.card-hover{transition:none}
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1280px){
  .exit-row{gap:36px}
  .exit{min-width:140px;padding:13px 14px}
}
@media (max-width:1080px){
  .nav-list li + li::before{padding:0 8px}
  .nav-list a{font-size:13.5px}
  .exit-row{gap:18px}
  .exit{min-width:118px}
  .exit-name{font-size:13px}
}
@media (max-width:940px){
  .nav-main{display:none}
  .lang-box{display:none}
  .nav-burger{display:inline-flex}
  .nav-tools{margin-left:auto}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .sec{padding-top:64px;padding-bottom:64px}
}
@media (max-width:720px){
  .hero{height:auto;min-height:100svh;padding-bottom:56px}
  .hero-inner{padding-top:128px}
  .hero-sub{font-size:16px}
  .exit-row{
    position:static;
    transform:none;
    margin:44px auto 0;
    padding-inline:var(--gutter);
    flex-wrap:wrap;justify-content:center;
    gap:12px;
    width:100%;
  }
  .exit,
  .exit:nth-child(1),.exit:nth-child(2),.exit:nth-child(4),.exit:nth-child(5){transform:none}
  .exit:hover,
  .exit:nth-child(1):hover,.exit:nth-child(2):hover,
  .exit:nth-child(4):hover,.exit:nth-child(5):hover{transform:none}
  .exit{min-width:calc(50% - 12px)}
  .section-next{margin-top:28px}
  .grid-2{grid-template-columns:1fr}
  .page-crown{padding-top:132px;padding-bottom:52px}
}
@media (max-width:640px){
  :root{--gutter:18px}
  #site-header,.site-headbar{padding-top:14px}
  .brand-name{font-size:15.5px}
  .hero h1{font-size:clamp(38px,10.5vw,50px)}
  .cta-row .btn{width:100%;justify-content:center}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .tilt-l,.tilt-r{transform:none}
  .panel-dark{padding:24px}
  .card{padding:22px}
}
@media (max-width:420px){
  .exit{min-width:100%}
}