/* ============================================================
   鸿胜切片 · Design System v2 — 商业级 SaaS 视觉规范
   深色奢华基调 + 玻璃拟态 + 品牌琥珀金点缀
   全部自包含(CSS变量), 无外部依赖, 移动端优先
   ============================================================ */

:root {
  /* 色板 — 深夜蓝黑 + 琥珀金品牌色 */
  --bg-0: #0b0f1a;            /* 页面底 */
  --bg-1: #111827;            /* 面板底 */
  --bg-2: #1a2234;            /* 卡片内层 */
  --ink: #f1f5f9;             /* 主文字 */
  --ink-2: #94a3b8;           /* 次文字 */
  --ink-3: #64748b;           /* 弱文字 */
  --gold: #f5b942;            /* 品牌琥珀金 */
  --gold-2: #e8a020;
  --gold-grad: linear-gradient(135deg, #f7c85c 0%, #f5b942 45%, #e8952a 100%);
  --blue: #4f8ef7;
  --green: #34d399;
  --red: #f87171;
  --glass: rgba(255, 255, 255, .055);
  --glass-strong: rgba(255, 255, 255, .09);
  --glass-border: rgba(255, 255, 255, .10);
  --glass-border-hi: rgba(245, 185, 66, .35);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, .35);
  --shadow-gold: 0 4px 24px rgba(245, 185, 66, .25);
  --radius: 16px;
  --radius-sm: 10px;
  /* 动效 */
  --ease: cubic-bezier(.22, 1, .36, 1);
  --dur: .35s;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(79, 142, 247, .12), transparent 60%),
    radial-gradient(900px 420px at 10% 110%, rgba(245, 185, 66, .10), transparent 55%),
    var(--bg-0);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── 玻璃卡片 ─────────────────────────── */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-card);
}
.glass:hover { border-color: rgba(255,255,255,.16); }

/* ── 顶部导航 ─────────────────────────── */
.saas-nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  background: rgba(11, 15, 26, .72);
  border-bottom: 1px solid var(--glass-border);
}
.saas-nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 12px 18px;
  display: flex; align-items: center; gap: 6px;
}
.saas-brand {
  font-weight: 800; font-size: 16px; letter-spacing: .5px;
  background: var(--gold-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-right: 18px; display: flex; align-items: center; gap: 8px;
}
.saas-brand .logo-dot {
  width: 10px; height: 10px; border-radius: 3px; background: var(--gold-grad);
  box-shadow: var(--shadow-gold);
}
.saas-nav a.nl {
  color: var(--ink-2); text-decoration: none; font-size: 13.5px; font-weight: 500;
  padding: 7px 13px; border-radius: 9px; transition: all var(--dur) var(--ease);
}
.saas-nav a.nl:hover { color: var(--ink); background: var(--glass); }
.saas-nav a.nl.on { color: var(--gold); background: rgba(245,185,66,.10); font-weight: 600; }
.saas-nav .who { margin-left: auto; color: var(--ink-3); font-size: 12.5px; display: flex; gap: 10px; align-items: center; }
.saas-nav .who a { color: var(--ink-3); text-decoration: none; }
.saas-nav .who a:hover { color: var(--red); }

/* ── 按钮 ─────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  border: none; cursor: pointer; font-family: inherit;
  border-radius: 12px; font-weight: 600; text-decoration: none;
  transition: transform .18s var(--ease), box-shadow .25s, filter .2s;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; filter: grayscale(.5); }
.btn-gold {
  background: var(--gold-grad); color: #241703; font-size: 16px; padding: 15px 22px;
  box-shadow: var(--shadow-gold); position: relative; overflow: hidden;
}
.btn-gold::after {           /* shimmer 扫光 */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.55) 50%, transparent 70%);
  transform: translateX(-120%); animation: shimmer 2.8s var(--ease) infinite;
}
@keyframes shimmer { to { transform: translateX(120%); } }
.btn-gold:hover { filter: brightness(1.06); }
.btn-ghost {
  background: var(--glass-strong); color: var(--ink-2); font-size: 13.5px; padding: 10px 16px;
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--glass-border-hi); }
.btn-blue { background: linear-gradient(135deg, #4f8ef7, #3a6fd8); color: #fff; font-size: 15px; padding: 13px 18px; }
.btn-line { background: transparent; color: var(--ink-2); border: 1px solid var(--glass-border); font-size: 13px; padding: 8px 14px; }
.btn-line:hover { color: var(--gold); border-color: var(--glass-border-hi); }

/* ── 勋章 / 徽标 ─────────────────────────── */
.medal {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 700;
  letter-spacing: .3px;
}
.medal-gold {
  background: linear-gradient(135deg, rgba(245,185,66,.22), rgba(232,149,42,.14));
  border: 1px solid rgba(245,185,66,.45); color: var(--gold);
}
.medal-gold::before { content: "◆"; font-size: 9px; }
.medal-blue { background: rgba(79,142,247,.14); border: 1px solid rgba(79,142,247,.4); color: #9cc0fb; }
.medal-green { background: rgba(52,211,153,.13); border: 1px solid rgba(52,211,153,.4); color: var(--green); }
.medal-gray { background: rgba(148,163,184,.12); border: 1px solid rgba(148,163,184,.3); color: var(--ink-2); }

/* ── 头像徽章 ─────────────────────────── */
.avatar {
  width: 40px; height: 40px; border-radius: 12px; flex-shrink: 0;
  background: var(--gold-grad); color: #241703;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 17px;
}

/* ── 统计数字 ─────────────────────────── */
.stat-num {
  font-size: 26px; font-weight: 800; font-variant-numeric: tabular-nums;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ── Skeleton 骨架屏 ─────────────────────────── */
.skeleton {
  position: relative; overflow: hidden; background: var(--glass-strong);
  border-radius: var(--radius-sm); min-height: 60px;
}
.skeleton::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 35%, rgba(255,255,255,.09) 50%, transparent 65%);
  animation: shimmer 1.3s linear infinite;
}

/* ── 表单 ─────────────────────────── */
.field input {
  width: 100%; padding: 14px 16px; font-size: 15px; font-family: inherit;
  background: var(--glass); border: 1.5px solid var(--glass-border);
  border-radius: 12px; color: var(--ink); transition: border-color .25s, box-shadow .25s;
}
.field input::placeholder { color: var(--ink-3); }
.field input:focus {
  outline: none; border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 185, 66, .12);
}

/* ── 动画进出场 ─────────────────────────── */
.anim-up { animation: up .55s var(--ease) both; }
@keyframes up { from { opacity: 0; transform: translateY(18px); } }
.anim-pop { animation: pop .4s var(--ease) both; }
@keyframes pop { from { opacity: 0; transform: scale(.92); } }
.stagger > * { animation: up .5s var(--ease) both; }
.stagger > *:nth-child(2) { animation-delay: .07s; }
.stagger > *:nth-child(3) { animation-delay: .14s; }
.stagger > *:nth-child(4) { animation-delay: .21s; }

/* ── 布局工具 ─────────────────────────── */
.wrap { max-width: 1080px; margin: 0 auto; padding: 20px 18px 110px; }
.grid { display: grid; gap: 12px; }
.g2 { grid-template-columns: 1fr 1fr; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.row { display: flex; align-items: center; gap: 10px; }
.between { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.muted { color: var(--ink-2); font-size: 13px; }
.tiny { color: var(--ink-3); font-size: 12px; }
.gold-t { color: var(--gold); }
.center { text-align: center; }

/* ── 移动端 ─────────────────────────── */
@media (max-width: 640px) {
  .g2, .g3 { grid-template-columns: 1fr; }
  .wrap { padding: 14px 14px 120px; }
  .saas-nav-inner { padding: 10px 14px; }
  .saas-nav a.nl { padding: 6px 9px; font-size: 12.5px; }
}

/* ── 无障碍: 减弱动效 ─────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::after, *::before { animation: none !important; transition: none !important; }
}