/* ============================================================
   BrandGEO — Design System  ·  深色 · 数据科技
   ============================================================ */
/* self-hosted fonts（大陆可访问，无 Google Fonts CDN）*/
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:400 700;font-display:swap;src:url('/fonts/SpaceGrotesk.woff2') format('woff2');unicode-range:U+0000-00FF,U+2013-2014,U+2018-201A,U+201C-201E,U+2026,U+2192,U+2212}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400 700;font-display:swap;src:url('/fonts/JetBrainsMono.woff2') format('woff2');unicode-range:U+0000-00FF,U+2013-2014,U+2018-201A,U+201C-201E,U+2026,U+2192,U+2212}


:root{
  /* ---- canvas ---- */
  --bg:        #070A12;
  --bg-2:      #0A0F1B;
  --panel:     #0E1422;
  --panel-2:   #121A2C;
  --raise:     #16203A;
  --line:      #1E2A45;
  --line-soft: #18233B;

  /* ---- ink ---- */
  --text:      #E8EDF8;
  --text-2:    #AEB9D4;
  --mute:      #7C89AC;
  --faint:     #44506E;

  /* ---- signal palette (oklch-tuned, shared chroma) ---- */
  --signal:    #19E3CC;   /* brand teal/cyan */
  --signal-d:  #0FA897;
  --signal-dim:#0C5A53;
  --blue:      #4D8DFF;
  --violet:    #A78BFA;
  --amber:     #F6C455;
  --coral:     #FF6378;

  --signal-08: rgba(25,227,204,.08);
  --signal-14: rgba(25,227,204,.14);
  --signal-22: rgba(25,227,204,.22);

  /* ---- type ---- */
  --display: "Space Grotesk", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --sans:    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Space Grotesk", sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --r-s: 10px;
  --r:   14px;
  --r-l: 20px;
  --r-xl:28px;

  --maxw: 1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);line-height:1.62;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{ /* fixed glow field */
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(25,227,204,.09), transparent 60%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.22;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size:64px 64px;
  background-position:center top;
}

a{color:var(--signal);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- typography helpers ---------- */
.mono{font-family:var(--mono)}
.tnum{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--signal);font-weight:600;display:inline-flex;align-items:center;gap:9px;
}
.kicker::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--signal),transparent)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}

h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.01em;line-height:1.1;margin:0}
.sg{color:var(--signal)}
.grad{background:linear-gradient(96deg,#EAF6F3 0%, var(--signal) 60%, #6FE8DA 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:var(--r-s);
  font-weight:600;font-size:14px;font-family:var(--sans);cursor:pointer;border:1px solid transparent;
  transition:transform .16s ease, box-shadow .16s ease, background .16s, border-color .16s;white-space:nowrap}
.btn .ar{font-family:var(--mono);transition:transform .18s}
.btn:hover .ar{transform:translateX(3px)}
.btn.primary{background:var(--signal);color:#04201D;box-shadow:0 4px 14px -6px rgba(25,227,204,.45)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px -8px rgba(25,227,204,.5)}
.btn.ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn.ghost:hover{border-color:var(--signal);color:#fff;background:var(--signal-08)}

/* ---------- chips / badges ---------- */
.chip{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.04em;color:var(--text-2);background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px var(--signal-14)}
.dot.live{animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 var(--signal-22)}50%{box-shadow:0 0 0 6px rgba(25,227,204,0)}}

/* ---------- panels ---------- */
.panel{background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:var(--r-l);position:relative}
.panel.glow{box-shadow:0 30px 80px -40px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.03)}

/* ---------- section frame ---------- */
section{padding:96px 0;position:relative}
.sec-head{margin-bottom:44px;max-width:780px}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);margin:14px 0 0}
.sec-head .lead{color:var(--text-2);font-size:17px;margin:16px 0 0;max-width:680px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* ---------- reveal on scroll ---------- */
[data-reveal]{opacity:0}
[data-reveal].in{animation:revealIn .7s cubic-bezier(.2,.7,.2,1) both}
@keyframes revealIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
[data-reveal][data-d="1"].in{animation-delay:.07s}
[data-reveal][data-d="2"].in{animation-delay:.14s}
[data-reveal][data-d="3"].in{animation-delay:.21s}
[data-reveal][data-d="4"].in{animation-delay:.28s}
@media (prefers-reduced-motion: reduce){
  [data-reveal]{opacity:1}
  [data-reveal].in{animation:none}
}

/* ---------- mono number readout ---------- */
.readout{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- bars ---------- */
.bar-track{height:8px;border-radius:6px;background:rgba(255,255,255,.05);overflow:hidden}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,var(--signal-d),var(--signal));
  width:0;transition:width 1.1s cubic-bezier(.2,.8,.2,1)}

::selection{background:var(--signal-22);color:#fff}

/* scrollbar */
*::-webkit-scrollbar{height:10px;width:10px}
*::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px}
*::-webkit-scrollbar-thumb:hover{background:var(--raise)}

/* ===== Lucide 图标系统（替代系统 emoji）。用法：<i data-lucide="zap" class="ico"></i> ===== */
/* .ico = 装在圆角容器里的功能/卡片图标（54/26，单色描边 1.75）；.ico-sm = 行内小图标（标题/提示/ⓘ） */
.ico{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:14px;background:var(--signal-08);border:1px solid var(--signal-22);color:var(--signal);flex:none;vertical-align:middle}
.ico svg{width:26px;height:26px;stroke-width:1.75}
.ico.sm{width:40px;height:40px;border-radius:11px}.ico.sm svg{width:20px;height:20px}
.ico-sm{display:inline-flex;align-items:center;justify-content:center;color:currentColor;vertical-align:-3px}
.ico-sm svg{width:1em;height:1em;stroke-width:1.9}
/* 容器版默认品牌色，可用色彩工具类覆盖 */
.ico.gold{color:var(--gold,#FFC36B);background:rgba(255,195,107,.08);border-color:rgba(255,195,107,.22)}
.ico.coral{color:var(--coral,#FF6378);background:rgba(255,99,120,.08);border-color:rgba(255,99,120,.22)}
.ico.blue{color:var(--blue,#9DB2FF);background:rgba(157,178,255,.08);border-color:rgba(157,178,255,.22)}
/* Lucide 未加载完时占位，避免裸 <i> 文字闪现 */
i[data-lucide]:empty{display:inline-block;width:1em;height:1em}


/* ============================================================
   V2 · 统一层：字阶 / 间距 / 应用页顶栏 / 报告分组
   ============================================================ */
:root{
  --fs-micro:12px;--fs-caption:13px;--fs-body-sm:14px;--fs-body:15px;
  --fs-title:17px;--fs-h3:20px;--fs-h2:24px;--fs-h1:32px;--fs-num:40px;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-6:24px;--sp-8:32px;--sp-12:48px;--sp-16:64px;
  --appbar-h:60px;
}

/* ---------- 统一应用顶栏 ---------- */
.appbar{display:block;width:auto;max-width:none;margin:0;padding:0;position:sticky;top:0;z-index:80;background:rgba(7,10,18,.85);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.appbar .ab-row{display:flex;align-items:center;gap:24px;height:var(--appbar-h);padding:0 24px;width:100%;max-width:none;box-sizing:border-box}
.appbar .brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;
  font-size:17px;color:var(--text);text-decoration:none;letter-spacing:-.01em}
.appbar .brand img{width:26px;height:26px;border-radius:7px;display:block}
.appbar .brand .g{color:var(--signal)}
.ab-links{display:flex;align-items:center;gap:4px}
.ab-links a{color:var(--mute);font-size:var(--fs-body-sm);font-weight:600;padding:8px 14px;border-radius:9px;line-height:1.2;text-decoration:none}
.ab-links a:hover{color:var(--text)}
.ab-links a.on{color:var(--text);background:var(--signal-08);box-shadow:inset 0 0 0 1px var(--signal-22)}
.ab-end{margin-left:auto;display:flex;align-items:center;gap:12px}
@media(max-width:940px){.ab-links{display:none}}
/* ---------- 顶栏移动端：收紧间距 + 给右上角固定 hamburger（nav.js 注入）留位，防止溢出/错位 ---------- */
@media(max-width:760px){
  .appbar .ab-row{gap:10px;padding:0 12px;padding-right:60px;min-width:0;flex-wrap:nowrap}
  .appbar .brand{font-size:16px;min-width:0;flex:0 1 auto;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
  .ab-end{gap:8px;min-width:0;flex:0 0 auto}
  .appbar .authbtn{padding:7px 10px;font-size:12px;white-space:nowrap}
}
@media(max-width:480px){
  .appbar .ab-row{gap:8px;padding-left:10px;padding-right:58px}
  .appbar .brand img{width:22px;height:22px}
}

/* ---------- 报告锚点导航（sticky） ---------- */
.rnav{position:sticky;top:var(--appbar-h);z-index:60;display:flex;gap:2px;
  background:rgba(7,10,18,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none;margin-bottom:16px}
.rnav::-webkit-scrollbar{display:none}
.rnav a{flex:none;color:var(--mute);font-size:var(--fs-body-sm);font-weight:600;
  padding:12px 16px;border-bottom:2px solid transparent;text-decoration:none}
.rnav a:hover{color:var(--text)}
.rnav a.on{color:var(--signal);border-bottom-color:var(--signal)}

/* ---------- 报告分组 ---------- */
.rsec{padding:0;margin-bottom:40px;scroll-margin-top:calc(var(--appbar-h) + 54px)}
.rsec-h{display:flex;align-items:baseline;gap:12px;margin:8px 0 16px}
.rsec-h .k{font-family:var(--mono);font-size:var(--fs-micro);letter-spacing:.14em;color:var(--signal);font-weight:600}
.rsec-h h2{font-size:var(--fs-h3);font-weight:700;color:var(--text);margin:0;font-family:var(--sans);letter-spacing:0;line-height:1.3}

/* appbar 内登录按钮（auth.js 绑定 .authbtn / #navAuth） */
.appbar .authbtn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);color:var(--text);
  border-radius:9px;padding:8px 14px;font-size:var(--fs-caption);font-weight:600;text-decoration:none;cursor:pointer;background:transparent}
.appbar .authbtn:hover{border-color:var(--signal);color:#fff;background:var(--signal-08)}