/* ============================================================================
   小怪兽Work · 门户样式（冰蓝磨砂玻璃）
   ----------------------------------------------------------------------------
   设计方向：Windows 客户端质感 —— 冰蓝画布 + 浮起的磨砂玻璃卡片。
   改品牌只动顶部 :root 令牌；改版式只动对应区块。
   纯 CSS、零外部依赖、不加载外网字体。
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 画布 */
  --canvas-1: #dcefff;
  --canvas-2: #f1f9ff;
  --canvas-3: #cbe6fb;
  --canvas-deep: #0c1622;

  /* 文字 */
  --ink: #0e2130;
  --ink-soft: #3a5668;
  --muted: #5c7789;
  --muted-soft: #7e97a7;

  /* 品牌：强调色取自小怪兽 logo 的荧光绿，填充一律配深墨文字 */
  --accent: #d9ff43;
  --accent-strong: #c3e92c;
  --accent-ink: #14231d;
  --accent-soft: #f0fcc4;
  --accent-text: #55730a;
  --accent-line: rgba(150, 190, 20, .45);
  --lime: #d9ff43;
  --ok: #14795a;
  --warn: #96600a;
  --danger: #bf3a30;

  /* 玻璃材质 */
  --glass: rgba(255, 255, 255, .58);
  --glass-strong: rgba(255, 255, 255, .76);
  --glass-soft: rgba(255, 255, 255, .38);
  --glass-line: rgba(255, 255, 255, .82);
  --glass-edge: rgba(154, 198, 225, .5);
  --blur: 28px;

  /* 阴影 */
  --shadow-1: 0 1px 2px rgba(16, 48, 72, .06), 0 14px 30px -22px rgba(16, 48, 72, .45);
  --shadow-2: 0 2px 8px rgba(16, 48, 72, .07), 0 30px 64px -30px rgba(16, 48, 72, .5);
  --shadow-3: 0 40px 90px -40px rgba(16, 48, 72, .55);
  --inset-hi: inset 0 1px 0 rgba(255, 255, 255, .96);

  /* 字体：中文走系统高质量黑体，数字用等宽 */
  --font-display: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --fs-xs: .8rem;
  --fs-sm: .9rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.5rem;
  --fs-xl: 2rem;
  --fs-2xl: 2.6rem;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 20px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 72px;
  --space-8: 104px;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur-fast: 150ms;
  --dur-base: 280ms;
  --dur-slow: 620ms;

  --shell: 1160px;
}

/* ---------- 2. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  letter-spacing: .005em;
  background-color: var(--canvas-1);
  background-image:
    radial-gradient(1200px 720px at 6% -12%, #b7e0ff 0%, rgba(183, 224, 255, 0) 62%),
    radial-gradient(900px 620px at 97% -2%, #d5dcff 0%, rgba(213, 220, 255, 0) 58%),
    radial-gradient(1100px 800px at 48% 104%, #b3e2ff 0%, rgba(179, 226, 255, 0) 66%),
    linear-gradient(180deg, #d8efff 0%, #e9f6ff 44%, #dcefff 76%, #cfe9ff 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 固定的柔光斑：玻璃卡片下方要有东西可糊，磨砂感才成立 */
body::before {
  content: "";
  position: fixed;
  inset: -10%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(540px 420px at 76% 12%, rgba(120, 195, 255, .55), transparent 68%),
    radial-gradient(460px 420px at 12% 34%, rgba(150, 214, 255, .45), transparent 70%),
    radial-gradient(620px 460px at 56% 76%, rgba(122, 190, 255, .38), transparent 72%),
    radial-gradient(420px 360px at 92% 88%, rgba(168, 190, 255, .4), transparent 70%);
  filter: blur(6px);
}

/* 极细噪点，让大面积蓝有材质感（Windows mica 的颗粒） */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .42;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

body > * { position: relative; z-index: 1; }

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
img, svg { max-width: 100%; }
::selection { background: rgba(217, 255, 67, .55); }

:focus-visible {
  outline: 2px solid var(--accent-text);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 3. 字体与标题 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.8rem);
  line-height: 1.14;
  letter-spacing: -.035em;
  font-weight: 700;
}

h2 {
  font-size: clamp(1.6rem, 2.4vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -.03em;
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.4;
  letter-spacing: -.015em;
  font-weight: 700;
}

p { margin: 0 0 var(--space-3); }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(1.02rem, 1.2vw, 1.15rem);
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 46ch;
}

.muted { color: var(--muted); font-size: var(--fs-sm); line-height: 1.72; }
.ink-soft { color: var(--ink-soft); }

/* 标题里的记号笔不是黄条了：改成冰蓝下划线渐隐 */
.mark {
  position: relative;
  white-space: nowrap;
  background: linear-gradient(180deg, transparent 58%, rgba(217, 255, 67, .8) 58%, rgba(217, 255, 67, .8) 96%, transparent 96%);
  padding: 0 .06em;
}
.mark--ink {
  background: none;
  color: var(--accent-text);
}

/* ---------- 4. 玻璃容器 ---------- */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
  backdrop-filter: blur(var(--blur)) saturate(180%);
  border: 1px solid var(--glass-line);
  box-shadow: var(--shadow-1), var(--inset-hi);
}

.card {
  position: relative;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .74), rgba(233, 246, 255, .46));
  -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
  backdrop-filter: blur(var(--blur)) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .84);
  box-shadow: 0 0 0 1px rgba(136, 182, 214, .18), var(--shadow-1), var(--inset-hi);
}

.card--solid { background: var(--glass-strong); }
.card--flat { box-shadow: var(--inset-hi); }

/* 深色玻璃：只用于「月费/客户端」这类需要重点的块 */
.card--dark {
  background:
    linear-gradient(150deg, rgba(28, 58, 82, .96) 0%, rgba(12, 22, 34, .97) 58%, rgba(18, 52, 76, .96) 100%);
  border: 1px solid rgba(255, 255, 255, .16);
  color: #eaf3fa;
  box-shadow: var(--shadow-2), inset 0 1px 0 rgba(255, 255, 255, .16);
}
.card--dark h1, .card--dark h2, .card--dark h3 { color: #f4f9fd; }
.card--dark p { color: rgba(234, 243, 250, .74); }
.card--dark .muted, .card--dark .stat__label, .card--dark .stat__sub { color: rgba(234, 243, 250, .62); }
.card--dark .stat__value { color: #ffffff; }

.card--tint {
  background: linear-gradient(155deg, rgba(255, 255, 255, .74), rgba(207, 232, 250, .58));
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.wrap {
  max-width: var(--shell);
  margin: 0 auto;
  padding: var(--space-7) var(--space-5) var(--space-8);
}

/* ---------- 5. 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 14px 0;
  background: linear-gradient(180deg, rgba(234, 246, 255, .9), rgba(234, 246, 255, 0));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  max-width: calc(var(--shell) + 28px);
  margin: 0 auto;
  min-height: 62px;
  padding: 0 10px 0 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .62);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .86);
  box-shadow: 0 1px 2px rgba(16, 48, 72, .05), 0 16px 36px -26px rgba(16, 48, 72, .55), var(--inset-hi);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: -.02em;
  white-space: nowrap;
  color: var(--ink);
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 11px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(16, 48, 72, .16);
}
.brand__mark svg { display: block; width: 100%; height: 100%; }
.brand__text small {
  display: block;
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--muted);
  line-height: 1;
  margin-top: 2px;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav a, .nav button {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-soft);
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.nav a:hover, .nav button:hover { background: rgba(255, 255, 255, .8); color: var(--ink); }
.nav a[aria-current="page"] {
  color: var(--accent-ink);
  background: linear-gradient(180deg, #e8ff86, var(--accent));
  box-shadow: 0 1px 2px rgba(16, 48, 72, .08), inset 0 1px 0 rgba(255, 255, 255, .55);
}

.nav__user {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 12px 0 4px;
  font-size: .86rem;
  color: var(--ink-soft);
  font-weight: 600;
}
.nav__user::before {
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: #21b57f;
  box-shadow: 0 0 0 3px rgba(33, 181, 127, .18);
}

.nav .nav-cta {
  margin-left: 6px;
  padding: 0 18px;
  color: var(--accent-ink);
  background: linear-gradient(180deg, #e8ff86, var(--accent));
  border: 1px solid rgba(150, 190, 20, .9);
  box-shadow: 0 6px 16px -10px rgba(120, 156, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .55);
  font-weight: 700;
}
.nav .nav-cta:hover {
  color: var(--accent-ink);
  background: linear-gradient(180deg, #f0ffab, var(--accent-strong));
}
.nav .nav-cta[aria-current="page"] { color: var(--accent-ink); background: var(--accent-strong); }

/* 移动端菜单 */
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 12px;
  background: rgba(255, 255, 255, .7);
  cursor: pointer;
}
.nav-toggle span { position: relative; display: block; width: 16px; height: 1.5px; background: var(--ink); border-radius: 2px; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink); border-radius: 2px;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, .92);
  background: rgba(255, 255, 255, .68);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: .96rem;
  font-weight: 700;
  letter-spacing: -.005em;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(16, 48, 72, .06), var(--inset-hi);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast);
}
.btn:hover { transform: translateY(-1px); background: rgba(255, 255, 255, .9); box-shadow: 0 8px 18px -14px rgba(16, 48, 72, .8), var(--inset-hi); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.btn--accent {
  color: var(--accent-ink);
  background: linear-gradient(180deg, #e8ff86, var(--accent));
  border-color: rgba(150, 190, 20, .85);
  box-shadow: 0 10px 24px -14px rgba(120, 156, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .6);
}
.btn--accent:hover {
  background: linear-gradient(180deg, #f0ffab, var(--accent-strong));
  box-shadow: 0 16px 34px -16px rgba(120, 156, 0, .85), inset 0 1px 0 rgba(255, 255, 255, .65);
}

.btn--ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, .34);
  border-color: rgba(154, 198, 225, .55);
  box-shadow: none;
}
.btn--ghost:hover { background: rgba(255, 255, 255, .78); box-shadow: 0 8px 18px -16px rgba(16, 48, 72, .7); }

.btn--dark {
  color: #f2f8fd;
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .3);
}
.btn--dark:hover { background: rgba(255, 255, 255, .22); }

.btn--sm { min-height: 40px; padding: 0 16px; font-size: .88rem; }
.btn--block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }

/* ---------- 7. 首屏 ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding-top: var(--space-3);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .66);
  border: 1px solid rgba(255, 255, 255, .92);
  box-shadow: var(--inset-hi), 0 2px 8px -6px rgba(16, 48, 72, .5);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-soft);
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px; border-radius: 50%;
  background: #b6d92e;
  box-shadow: 0 0 0 3px rgba(217, 255, 67, .5);
}

.hero h1 { margin: var(--space-4) 0 var(--space-4); }
.hero .lead { margin-bottom: var(--space-5); }

.trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(120, 168, 200, .26);
}
.trust-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .5);
  border: 1px solid rgba(255, 255, 255, .8);
  font-size: .8rem;
  font-weight: 600;
  color: var(--ink-soft);
}
.trust-bar span::before {
  content: "";
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}

/* 客户端窗口 mock（首屏右侧） */
.app-mock {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, .62);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: var(--shadow-3), var(--inset-hi);
}
.app-mock::after {
  content: "";
  position: absolute;
  inset: -40% -20% 55% -20%;
  background: radial-gradient(60% 60% at 50% 50%, rgba(255, 255, 255, .85), transparent 70%);
  pointer-events: none;
}
.app-mock__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(140, 182, 210, .28);
  background: rgba(255, 255, 255, .4);
}
.app-mock__dots { display: inline-flex; gap: 6px; }
.app-mock__dots i {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(120, 160, 190, .38);
}
.app-mock__title {
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-left: 6px;
}
.app-mock__status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .74rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .7);
  border: 1px solid rgba(255, 255, 255, .9);
}
.app-mock__status i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 2px rgba(217, 255, 67, .3);
}

.app-mock__body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.bubble {
  align-self: flex-end;
  max-width: 88%;
  padding: 11px 15px;
  border-radius: 16px 16px 5px 16px;
  background: linear-gradient(180deg, #e8ff86, var(--accent));
  color: var(--accent-ink);
  font-size: .9rem;
  line-height: 1.6;
  box-shadow: 0 10px 22px -14px rgba(31, 100, 153, .9);
}

.task-log {
  list-style: none;
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .66);
  border: 1px solid rgba(255, 255, 255, .92);
  font-size: .84rem;
  color: var(--ink-soft);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.task-log li {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  align-items: center;
  gap: 8px;
}
.task-log li b { font-weight: 700; color: var(--ink); }
.task-log .tick {
  width: 16px; height: 16px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(217, 255, 67, .45);
  color: var(--accent-ink);
}
.task-log .tick svg { width: 10px; height: 10px; }
.task-log .cost {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--muted);
}

.result-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(255, 255, 255, .86), rgba(220, 240, 255, .68));
  border: 1px solid rgba(255, 255, 255, .96);
  box-shadow: 0 10px 26px -22px rgba(16, 48, 72, .8);
}
.result-card__icon {
  width: 34px; height: 34px; flex: 0 0 auto;
  border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(217, 255, 67, .4);
  color: var(--accent-ink);
}
.result-card__icon svg { width: 18px; height: 18px; }
.result-card strong { display: block; font-size: .88rem; }
.result-card span { font-size: .76rem; color: var(--muted); font-family: var(--font-mono); }

/* ---------- 8. 数据条 ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-7);
  padding: var(--space-4) var(--space-2);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .5);
  -webkit-backdrop-filter: blur(24px) saturate(170%);
  backdrop-filter: blur(24px) saturate(170%);
  border: 1px solid rgba(255, 255, 255, .86);
  box-shadow: var(--shadow-1), var(--inset-hi);
}
.metric {
  padding: 6px var(--space-4);
  border-left: 1px solid rgba(120, 168, 200, .24);
}
.metric:first-child { border-left: 0; }
.metric__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 2.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -.04em;
  line-height: 1.1;
  color: var(--ink);
}
.metric__value span { font-size: .82rem; font-weight: 600; letter-spacing: 0; color: var(--ink-soft); }
.metric__label { font-size: .88rem; font-weight: 600; color: var(--ink-soft); margin-top: 4px; }
.metric__sub { font-size: .78rem; color: var(--muted); }

/* ---------- 9. 区块头 ---------- */
.section { margin-top: var(--space-8); }

.section__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}
.section__head > div { max-width: 620px; }
.section__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 10px;
}
.section__kicker::before {
  content: "";
  width: 18px; height: 1px;
  background: var(--accent-line);
}
.section__note {
  max-width: 40ch;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--muted);
  margin: 0;
  padding-bottom: 4px;
}

/* ---------- 10. 功能网格 ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}
.feature {
  position: relative;
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .7), rgba(255, 255, 255, .4));
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .86);
  box-shadow: 0 0 0 1px rgba(140, 185, 215, .14), var(--shadow-1), var(--inset-hi);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base), background var(--dur-base);
  overflow: hidden;
}
.feature::after {
  content: "";
  position: absolute;
  top: -50%; right: -30%;
  width: 70%; height: 120%;
  background: radial-gradient(closest-side, rgba(255, 255, 255, .9), transparent);
  opacity: 0;
  transition: opacity var(--dur-base);
  pointer-events: none;
}
.feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2), var(--inset-hi);
  background: rgba(255, 255, 255, .68);
}
.feature:hover::after { opacity: 1; }

.feature__icon {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 13px;
  background: linear-gradient(160deg, #ffffff, #e4f2fd);
  border: 1px solid rgba(255, 255, 255, .98);
  box-shadow: 0 6px 14px -10px rgba(16, 48, 72, .8), 0 0 0 1px rgba(136, 182, 214, .22), var(--inset-hi);
  color: #2f4a06;
  margin-bottom: 16px;
}
.feature__icon svg { width: 22px; height: 22px; stroke-width: 1.8; }
.feature h3 { margin-bottom: 8px; }
.feature p { font-size: .92rem; line-height: 1.72; color: var(--ink-soft); margin: 0; }
.feature__no {
  position: absolute;
  top: 22px; right: 22px;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted-soft);
  letter-spacing: .06em;
}

/* ---------- 11. 步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  counter-reset: step;
}
.step {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, .66), rgba(255, 255, 255, .38));
  -webkit-backdrop-filter: blur(22px) saturate(175%);
  backdrop-filter: blur(22px) saturate(175%);
  border: 1px solid rgba(255, 255, 255, .86);
  box-shadow: 0 0 0 1px rgba(140, 185, 215, .14), 0 10px 26px -24px rgba(16, 48, 72, .8), var(--inset-hi);
}
.step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--ink);
  color: #eaf6ff;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.step h3 { font-size: 1.06rem; margin-bottom: 6px; }
.step p { font-size: .9rem; line-height: 1.72; color: var(--muted); margin: 0; }

/* ---------- 12. 计费 ---------- */
.billing {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: var(--space-4);
  align-items: stretch;
}
.price-panel { padding: clamp(24px, 3vw, 36px); }
.price-panel__row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(120, 168, 200, .22);
}
.price-panel__row:first-of-type { padding-top: 8px; }
.price-panel__row:last-of-type { border-bottom: 0; padding-bottom: 0; }
.price-panel__key { font-size: .92rem; color: var(--ink-soft); font-weight: 600; }
.price-panel__val {
  margin-left: auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
}
.price-panel__val em { font-style: normal; color: var(--muted); font-weight: 500; font-size: .88rem; }

.bill-list { list-style: none; padding: 0; margin: var(--space-4) 0 0; }
.bill-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  padding: 10px 0;
  font-size: .92rem;
  line-height: 1.7;
  color: rgba(234, 243, 250, .82);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.bill-list li:last-child { border-bottom: 0; }
.bill-list svg { width: 16px; height: 16px; margin-top: 4px; color: var(--lime); }

/* 活动位 */
.activity-slot {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  margin-top: var(--space-7);
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(120deg, rgba(255, 255, 255, .74), rgba(207, 232, 250, .66));
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1), var(--inset-hi);
}
.activity-slot::after {
  content: "";
  position: absolute;
  right: -60px; top: -80px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(120, 205, 255, .5), transparent);
  pointer-events: none;
}
.activity-slot__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--ink);
  color: #eaf6ff;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .08em;
}
.activity-slot__body { flex: 1 1 380px; min-width: 0; position: relative; z-index: 1; }
.activity-slot h2 { font-size: 1.24rem; letter-spacing: -.02em; margin: 8px 0 6px; }
.activity-slot p { margin: 0; font-size: .9rem; color: var(--ink-soft); max-width: 60ch; }
.activity-slot .btn { margin-left: auto; position: relative; z-index: 1; }
@media (max-width: 760px) { .activity-slot .btn { margin-left: 0; } }

/* ---------- 13. FAQ ---------- */
.faq {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, .5);
  -webkit-backdrop-filter: blur(24px) saturate(170%);
  backdrop-filter: blur(24px) saturate(170%);
  border: 1px solid rgba(255, 255, 255, .86);
  box-shadow: var(--shadow-1), var(--inset-hi);
}
.faq details { border-bottom: 1px solid rgba(120, 168, 200, .22); }
.faq details:last-child { border-bottom: 0; }
.faq summary {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 62px;
  padding: 4px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  list-style: none;
  transition: background var(--dur-fast);
}
.faq summary:hover { background: rgba(255, 255, 255, .5); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  margin-left: auto;
  width: 10px; height: 10px;
  flex: 0 0 auto;
  border-right: 1.6px solid var(--muted);
  border-bottom: 1.6px solid var(--muted);
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--dur-base) var(--ease-out);
}
.faq details[open] summary::after { transform: rotate(225deg) translateY(-2px); }
.faq details p {
  margin: 0;
  padding: 0 24px 22px;
  max-width: 72ch;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 14. 收尾 CTA ---------- */
.cta-band {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(140deg, #17466a 0%, #0c1622 62%, #10334e 100%);
  color: #eaf3fa;
  box-shadow: var(--shadow-3), inset 0 1px 0 rgba(255, 255, 255, .14);
}
.cta-band::before {
  content: "";
  position: absolute;
  left: -80px; bottom: -140px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(94, 186, 255, .38), transparent);
  pointer-events: none;
}
.cta-band h2 { color: #f4f9fd; font-size: clamp(1.5rem, 2.4vw, 2rem); }
.cta-band p { color: rgba(234, 243, 250, .72); font-size: .94rem; margin: 8px 0 0; }
.cta-band > * { position: relative; z-index: 1; }
.cta-band .btn--accent { box-shadow: 0 14px 30px -16px rgba(150, 190, 20, .85), inset 0 1px 0 rgba(255, 255, 255, .5); }

/* ---------- 15. 页脚 ---------- */
.site-footer {
  margin-top: var(--space-7);
  padding: var(--space-5) 0 var(--space-6);
  border-top: 1px solid rgba(120, 168, 200, .28);
  font-size: .84rem;
  color: var(--muted);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  align-items: flex-start;
  justify-content: space-between;
}
.footer-brand { max-width: 30ch; }
.footer-brand .brand { margin-bottom: 10px; }
.footer-brand p { font-size: .84rem; line-height: 1.7; color: var(--muted); margin: 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.footer-nav a { font-size: .86rem; color: var(--ink-soft); }
.footer-nav a:hover { color: var(--accent-text); }
.footer-legal { margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid rgba(120, 168, 200, .2); }

.beian {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  font-size: .78rem;
  color: var(--muted);
}
.beian__item { display: inline-flex; align-items: center; gap: 7px; }
.beian__mark {
  width: 17px; height: 17px;
  border-radius: 5px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; line-height: 1;
  flex: 0 0 auto;
}
.beian__mark--icp { background: var(--accent); color: var(--accent-ink); }
.beian__mark--lic { background: rgba(20, 35, 29, .08); color: var(--ink); }
.beian a { color: var(--muted); border-bottom: 1px dotted rgba(120, 168, 200, .5); }
.beian a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.license-note { font-size: .7rem; color: var(--muted-soft); margin-top: 10px; }
.license-note a { text-decoration: underline; text-underline-offset: 2px; }

/* ---------- 16. 数字 ---------- */
.stat__label {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
  text-transform: none;
}
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 2.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -.04em;
  line-height: 1.15;
  margin-top: 6px;
}
.stat__value--hero { font-size: clamp(2.1rem, 3.6vw, 2.9rem); }
.stat__unit { font-family: var(--font-body); font-size: .86rem; font-weight: 600; letter-spacing: 0; opacity: .65; margin-left: 4px; }
.stat__sub { font-size: .8rem; color: var(--muted); margin-top: 6px; line-height: 1.6; }

/* ---------- 17. 表单 ---------- */
.field { margin-bottom: var(--space-4); }
.field label {
  display: block;
  font-size: .86rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 7px;
}
.field input, .field select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(154, 198, 225, .55);
  background: rgba(255, 255, 255, .78);
  color: var(--ink);
  font-size: .96rem;
  box-shadow: inset 0 1px 2px rgba(16, 48, 72, .04);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), background var(--dur-fast);
}
.field input::placeholder { color: var(--muted-soft); }
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(217, 255, 67, .6);
}
.field__hint { font-size: .78rem; color: var(--muted); margin-top: 6px; }

.form-card { max-width: 460px; }
.form-card__head { margin-bottom: var(--space-5); }
.form-card__head h1 { font-size: clamp(1.6rem, 2.6vw, 2rem); margin: var(--space-3) 0 8px; letter-spacing: -.03em; }

/* 登录/注册的双栏卡 */
.auth-shell {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: rgba(255, 255, 255, .58);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: var(--shadow-3), var(--inset-hi);
}
.auth-side {
  padding: clamp(28px, 3.4vw, 44px);
  background: linear-gradient(150deg, #17466a 0%, #0c1622 60%, #123a57 100%);
  color: #eaf3fa;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
}
.auth-side::after {
  content: "";
  position: absolute;
  right: -110px; bottom: -130px;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(94, 186, 255, .4), transparent);
}
.auth-side h2 { color: #f4f9fd; font-size: 1.5rem; line-height: 1.3; position: relative; }
.auth-side p { color: rgba(234, 243, 250, .72); font-size: .92rem; position: relative; }
.auth-side .auth-points { list-style: none; padding: 0; margin: var(--space-4) 0 0; position: relative; }
.auth-side__mark {
  position: absolute;
  right: 12px;
  bottom: 2px;
  width: 196px;
  height: 196px;
  opacity: .12;
  pointer-events: none;
  z-index: 0;
}
.auth-side__mark svg { width: 100%; height: 100%; display: block; }
.auth-side > p, .auth-side > h2, .auth-side > ul { position: relative; z-index: 1; }
.auth-side .auth-points li {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 9px 0;
  font-size: .88rem;
  color: rgba(234, 243, 250, .78);
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.auth-side .auth-points svg { width: 16px; height: 16px; color: var(--lime); flex: 0 0 auto; margin-top: 3px; }
.auth-main { padding: clamp(28px, 3.4vw, 44px); }
.auth-main .btn-row { margin-top: var(--space-4); }
.auth-foot { margin-top: var(--space-5); font-size: .82rem; color: var(--muted); line-height: 1.7; }
.auth-foot a { color: var(--accent); font-weight: 600; }

/* ---------- 18. 提示条 ---------- */
.notice {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  line-height: 1.65;
  background: rgba(255, 255, 255, .74);
  border: 1px solid rgba(154, 198, 225, .5);
  color: var(--ink-soft);
  margin: var(--space-3) 0;
}
.notice--ok { border-color: rgba(20, 121, 90, .3); background: rgba(232, 250, 243, .8); color: var(--ok); }
.notice--warn { border-color: rgba(150, 96, 10, .28); background: rgba(255, 248, 232, .8); color: var(--warn); }
.notice--error { border-color: rgba(191, 58, 48, .28); background: rgba(255, 240, 238, .82); color: var(--danger); }
.notice[hidden] { display: none; }

/* ---------- 19. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(154, 198, 225, .42);
  background: rgba(255, 255, 255, .62);
}
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td {
  padding: 14px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(154, 198, 225, .26);
  white-space: nowrap;
}
th.num, td.num { text-align: right; }
th {
  background: rgba(214, 236, 250, .42);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--muted);
  position: sticky;
  top: 0;
  z-index: 1;
}
td { color: var(--ink-soft); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(255, 255, 255, .6); }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; color: var(--ink); text-align: right; }
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-size: .76rem;
  font-weight: 600;
  background: rgba(20, 35, 29, .07);
  color: var(--ink-soft);
}
.pill--ok { background: rgba(20, 121, 90, .12); color: var(--ok); }
.pill--warn { background: rgba(150, 96, 10, .12); color: var(--warn); }

/* ---------- 20. 后台 ---------- */
.page-head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}
.page-head h1 { font-size: clamp(1.7rem, 2.8vw, 2.2rem); letter-spacing: -.03em; }
.page-head p { margin: 10px 0 0; color: var(--muted); font-size: .94rem; }

.dash-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 24px;
  align-items: stretch;
}
.balance-card { padding: clamp(28px, 3.2vw, 40px); display: flex; flex-direction: column; gap: 4px; }
.balance-card .stat__sub { color: rgba(234, 243, 250, .62); }
.balance-card .btn { margin-top: auto; align-self: flex-start; }

.kpi-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.kpi {
  padding: 26px 28px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .54);
  border: 1px solid rgba(255, 255, 255, .88);
  box-shadow: var(--inset-hi);
}
.kpi .stat__value { font-size: 1.5rem; }
.kpi .stat__sub { margin-top: 8px; }

.dash-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
  margin-top: 24px;
}
.panel { padding: 28px 26px; }
.panel__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.panel__head h2 { font-size: 1.14rem; letter-spacing: -.02em; }
.panel__head .muted { margin-left: auto; font-size: .78rem; }
.panel > .muted { margin-bottom: 20px; }
.table-wrap--scroll { max-height: 380px; overflow-y: auto; }

/* ---------- 21. 充值 ---------- */
.tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tier {
  position: relative;
  padding: 14px 16px;
  text-align: left;
  border-radius: var(--radius-md);
  border: 1px solid rgba(154, 198, 225, .5);
  background: rgba(255, 255, 255, .72);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast), background var(--dur-fast), box-shadow var(--dur-fast);
}
.tier:hover { transform: translateY(-2px); border-color: #b6d92e; background: #fff; }
.tier[aria-pressed="true"] {
  background: linear-gradient(160deg, #ffffff, #f4ffd6);
  border-color: #b6d92e;
  box-shadow: 0 0 0 3px rgba(217, 255, 67, .5), 0 10px 22px -18px rgba(16, 48, 72, .8);
}
.tier[aria-pressed="true"]::after {
  content: "已选";
  position: absolute;
  top: 10px; right: 10px;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: var(--radius-pill);
  padding: 2px 7px;
}
.tier__amount {
  font-family: var(--font-mono);
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: -.03em;
  color: var(--ink);
}
.tier__bonus { font-size: .78rem; color: var(--muted); margin-top: 2px; }
.tier[aria-pressed="true"] .tier__bonus { color: var(--accent-text); font-weight: 600; }

/* ---------- 22. 关于页 ---------- */
.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.quote-card {
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(28, 58, 82, .96), rgba(12, 22, 34, .97));
  color: #eaf3fa;
  border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: var(--shadow-2), inset 0 1px 0 rgba(255, 255, 255, .16);
}
.quote-card blockquote {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.7;
  letter-spacing: -.01em;
  color: #f4f9fd;
}
.quote-card cite { display: block; margin-top: 14px; font-size: .8rem; font-style: normal; color: rgba(234, 243, 250, .6); }
.quote-card blockquote::before {
  content: "";
  display: block;
  width: 26px; height: 2px;
  background: var(--lime);
  margin-bottom: 14px;
  border-radius: 2px;
}

.prose-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.prose-grid .card h3 { margin-bottom: 8px; }
.prose-grid .card p { font-size: .94rem; line-height: 1.8; color: var(--ink-soft); }

.check-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.check-item {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .48);
  border: 1px solid rgba(255, 255, 255, .84);
  box-shadow: var(--inset-hi);
}
.check-item .num-mark {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--accent);
  letter-spacing: .06em;
}
.check-item h3 { font-size: 1.02rem; margin: 8px 0 6px; }
.check-item p { font-size: .9rem; line-height: 1.72; color: var(--muted); margin: 0; }

/* ---------- 23. 许可页 ---------- */
.doc-card { max-width: 800px; margin: 0 auto; padding: clamp(26px, 4vw, 44px); }
.doc-card h1 { font-size: clamp(1.5rem, 2.4vw, 1.9rem); margin: var(--space-3) 0 10px; }
.doc-card h2 { font-size: 1.06rem; margin-top: var(--space-5); letter-spacing: -.01em; }
.doc-card pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.75;
  background: rgba(230, 244, 254, .7);
  border: 1px solid rgba(154, 198, 225, .4);
  border-radius: var(--radius-md);
  padding: 20px;
  color: var(--ink-soft);
  margin: var(--space-3) 0 0;
}

/* ---------- 24. 入场动画 ---------- */
html.reveal-ready .reveal { opacity: 0; transform: translateY(14px); }
html.reveal-ready .reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.reveal.is-in { transition-delay: var(--delay, 0ms); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.reveal-ready .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .feature:hover, .tier:hover, .entry:hover { transform: none; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- 25. 响应式 ---------- */
@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; gap: var(--space-6); }
  .hero__copy { max-width: 62ch; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: var(--space-4); }
  .metric:nth-child(3) { border-left: 0; }
  .features, .steps, .check-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .billing, .dash-hero, .about-hero { grid-template-columns: 1fr; }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-side { order: -1; }
  .auth-side .auth-points { margin-top: var(--space-4); }
}

@media (max-width: 760px) {
  .wrap { padding: var(--space-5) var(--space-4) var(--space-7); }
  .shell { padding: 0 var(--space-4); }
  .site-header { padding: 10px 16px; }
  .site-header__inner { position: relative; min-height: 56px; flex-wrap: wrap; padding: 8px 10px 8px 12px; }
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    order: 3;
    width: 100%;
    margin: 4px 0 2px;
    padding-top: 8px;
    border-top: 1px solid rgba(120, 168, 200, .26);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .site-header__inner.is-open .nav { display: flex; }
  .nav a, .nav button { justify-content: flex-start; min-height: 44px; padding: 0 12px; }
  .nav .nav-cta { margin: 6px 0 0; justify-content: center; }
  .nav__user { padding: 8px 12px 2px; }
  .nav__user::before { margin-right: 2px; }

  h1 { font-size: clamp(2rem, 8.4vw, 2.6rem); }
  .section { margin-top: var(--space-7); }
  .section__head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .section__note { max-width: none; padding-bottom: 0; }
  .features, .steps, .check-grid, .prose-grid, .kpi-grid, .dash-grid, .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .metrics { padding: var(--space-3); }
  .metric { padding: 6px 14px; }
  .metric:nth-child(odd) { border-left: 0; }
  .tiers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .footer-grid { flex-direction: column; gap: var(--space-4); }
  .panel, .card, .feature { padding: 20px; }
  .step { padding: 20px; }
  .faq summary { padding: 4px 18px; font-size: .96rem; }
  .faq details p { padding: 0 18px 20px; }
  .app-mock__body { padding: 14px; }
  .task-log { font-size: .78rem; }
}

@media (max-width: 420px) {
  .tiers { grid-template-columns: 1fr; }
  .btn { min-height: 46px; padding: 0 18px; }
  .btn-row .btn { flex: 1 1 auto; }
}

/* ---------- 26. 通用小工具 ---------- */
.grid { display: grid; gap: var(--space-4); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stack > * + * { margin-top: var(--space-4); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.center { text-align: center; }
.inline-link { color: var(--accent-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.inline-link:hover { color: var(--ink); }

/* ---------- 27. 功能页 ---------- */
.feature-rows { display: flex; flex-direction: column; }

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  padding: clamp(28px, 4vw, 48px) 0;
  border-bottom: 1px solid rgba(120, 168, 200, .22);
}
.feature-row:last-child { border-bottom: 0; padding-bottom: 0; }
.feature-row--flip .feature-row__media { order: -1; }

.feature-row__copy h2 { font-size: clamp(1.35rem, 2vw, 1.7rem); margin-bottom: 12px; }
.feature-row__copy p { font-size: .96rem; line-height: 1.8; color: var(--ink-soft); margin: 0 0 14px; }
.feature-row__copy p:last-child { margin-bottom: 0; }
.feature-row__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--accent-text);
  margin-bottom: 10px;
}
.feature-row__kicker::before { content: ""; width: 16px; height: 1px; background: var(--accent-line); }

.mini-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.mini-list li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.mini-list svg { width: 15px; height: 15px; margin-top: 5px; color: var(--accent-text); }

/* 代码/终端片段 */
.code-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, .78);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, .92);
  box-shadow: 0 24px 50px -34px rgba(16, 48, 72, .8), var(--inset-hi);
}
.code-card__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(140, 182, 210, .26);
  background: rgba(240, 249, 255, .7);
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--muted);
}
.code-card__tag {
  margin-left: auto;
  font-family: var(--font-body);
  font-size: .7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(217, 255, 67, .55);
  color: var(--accent-ink);
}
.code-card pre {
  margin: 0;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.85;
  color: var(--ink-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.code-card .add { color: #2f6b1a; background: rgba(160, 220, 120, .22); display: block; }
.code-card .del { color: #a33a2c; background: rgba(240, 160, 150, .2); display: block; }
.code-card .cmd { color: var(--ink); font-weight: 600; }
.code-card .prompt { color: var(--accent-text); font-weight: 700; margin-right: 6px; }
.code-card .ok { color: #2f6b1a; }
.code-card .dim { color: var(--muted-soft); }
.code-card__foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid rgba(140, 182, 210, .26);
  background: rgba(240, 249, 255, .55);
  font-size: .76rem;
  color: var(--muted);
}
.code-card__stop {
  margin-left: auto;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(154, 198, 225, .7);
  font-size: .72rem;
  font-weight: 700;
  color: var(--ink-soft);
}

/* 任务链状态 */
.task-log--paper { background: rgba(255, 255, 255, .78); box-shadow: 0 24px 50px -34px rgba(16, 48, 72, .8); }
.task-log li.is-running .tick { background: var(--accent); color: var(--accent-ink); }
.task-log li.is-pending { opacity: .55; }
.task-log li.is-pending .tick { background: rgba(20, 35, 29, .08); color: var(--muted); }
.task-log .pulse { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

@media (max-width: 880px) {
  .feature-row { grid-template-columns: 1fr; gap: 20px; }
  .feature-row--flip .feature-row__media { order: 0; }
}

/* ---------- 28. 更新日志 ---------- */
.log-list { list-style: none; margin: 0; padding: 0; }

.log-entry {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
  padding: 30px 0;
  border-top: 1px solid rgba(120, 168, 200, .22);
}
.log-entry:first-child { border-top: 0; padding-top: 4px; }

.log-entry__meta { display: flex; flex-direction: column; gap: 6px; }
.log-version {
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--ink);
}
.log-date { font-family: var(--font-mono); font-size: .78rem; color: var(--muted); }
.log-badge {
  align-self: flex-start;
  margin-top: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: .72rem;
  font-weight: 700;
  background: rgba(20, 35, 29, .07);
  color: var(--ink-soft);
}
.log-badge--client { background: rgba(217, 255, 67, .6); color: var(--accent-ink); }

.log-entry h3 { font-size: 1.12rem; margin-bottom: 14px; letter-spacing: -.015em; }
.log-items { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.log-items li {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 10px;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink-soft);
}
.log-items li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-line);
  margin-top: 10px;
}
.log-entry--current .log-items li::before { background: #9ec21f; }

.log-foot {
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid rgba(120, 168, 200, .22);
  font-size: .86rem;
  color: var(--muted);
}

@media (max-width: 760px) {
  .log-entry { grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
  .log-entry__meta { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 10px; }
  .log-badge { margin-top: 0; }
}