/* ═══════════════════════════════════════════════════════════════════════
   Veyrun 悦跑 · 设计系统 v3「Nebula Violet」
   ---------------------------------------------------------------------
   单文件 CSS，无构建步骤。改这里就能改全站外观。

   由 v2（浅紫白底）整体翻转为【深紫暗色】——用户明确选择的方向。

   设计语言五条铁律（以后改代码请守住）：
     1. 深色基底：页面底色是 --void，卡片是半透明玻璃紫，永远不要出现纯白大块
     2. 紫色是唯一主色：--violet 家族 + --iris 辅助，别混进蓝/绿主色
     3. 高光 = 材质：.glow / .spec / --sheen 三件套，克制使用，宁可少不可脏
     4. 动效用 iOS 曲线：--ease-out = cubic-bezier(.22,.61,.36,1)
        交互反馈 120~200ms，入场 420~700ms，超过 900ms 一律视为「卡」
     5. 顶栏：logo 贴左，nav 胶囊 + 操作按钮成组贴右（.nav 的 margin-left:auto）
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  /* ── 品牌紫（主色梯度） ── */
  --violet: #8b5cf6;        /* 主品牌紫，暗底上比 #7c3aed 更「发光」 */
  --violet-2: #a855f7;      /* 高光紫 */
  --violet-3: #c4b5fd;      /* 浅紫（暗底上的强调文字/描边） */
  --violet-deep: #5b21b6;   /* 深紫（按下/内阴影） */
  --iris: #c4b5fd;          /* 雾紫，柔光 */
  --lilac: #ede9fe;
  --orchid: #e879f9;        /* 品紫点缀（价格、强调数字） */
  --glow-violet: rgba(139, 92, 246, .45);
  --glow-iris: rgba(168, 85, 247, .38);
  --glow-orchid: rgba(232, 121, 249, .34);

  /* ── 语义色（在紫色体系内调过，暗底上压暗一档，不刺眼） ── */
  --lime: #b6f06a;
  --amber: #fbbf55;
  --red: #fb7185;
  --green: #34d399;

  /* ── 中性（深紫夜空，全部带紫调） ── */
  --void: #08050f;          /* 最深底色 */
  --bg: #0b0716;            /* 页面底 */
  --bg-2: #120d20;          /* 次级底/分区 */
  --card: rgba(255, 255, 255, .045);
  --card-2: rgba(255, 255, 255, .07);
  --ink: #f4f0ff;           /* 主文字（近白带紫） */
  --ink-2: #c8bfe0;         /* 次级文字 */
  --ink-3: #8e84ab;         /* 弱化文字 */
  --line: rgba(196, 181, 253, .16);
  --line-2: rgba(196, 181, 253, .10);
  --line-3: rgba(196, 181, 253, .26);

  /* ── 深色层级（hero / 钱包卡 / 启动层） ── */
  --deep: #0d0819;
  --deep-2: #170e2e;
  --deep-3: #241546;

  /* ── 圆角（iOS 手感：大圆角、小按钮全圆） ── */
  --r-sm: 12px;
  --r: 18px;
  --r-lg: 24px;
  --r-xl: 32px;

  /* ── 阴影：暗底上靠「光」不靠「黑」，阴影负责压深，辉光负责浮起 ── */
  --sh-1: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 18px rgba(0, 0, 0, .3);
  --sh-2: 0 2px 6px rgba(0, 0, 0, .45), 0 16px 40px rgba(0, 0, 0, .45), 0 0 0 1px rgba(196, 181, 253, .05);
  --sh-3: 0 8px 24px rgba(0, 0, 0, .5), 0 32px 80px rgba(24, 8, 60, .6);
  --sh-brand: 0 10px 30px rgba(124, 58, 237, .5), 0 2px 8px rgba(91, 33, 182, .4);

  /* ── 高光材质 ── */
  --sheen: linear-gradient(115deg, rgba(255,255,255,0) 20%, rgba(255,255,255,.34) 44%, rgba(255,255,255,0) 64%);
  --hairline: inset 0 1px 0 rgba(255, 255, 255, .14);
  /* 卡片顶部的「光边」：一层从顶部往下散的紫，比阴影更关键 */
  --topglow: radial-gradient(120% 70% at 50% 0%, rgba(168, 85, 247, .22), transparent 62%);

  /* ── iOS 动效曲线 ── */
  --ease-out: cubic-bezier(.22, .61, .36, 1);        /* iOS 标准减速 */
  --ease-ios: cubic-bezier(.32, .72, 0, 1);          /* Apple 面板 */
  --spring: cubic-bezier(.34, 1.56, .64, 1);         /* 轻微回弹 */
  --dur-fast: 140ms;
  --dur: 220ms;
  --dur-slow: 520ms;

  --max: 1180px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);

  color-scheme: dark;
}

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

html { scroll-behavior: smooth; background: var(--void); }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}

/* 全站氛围光：三团极光压在底层，让深紫不发死。fixed 跟随视口，滚动时像星云在动 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 520px at 82% -10%, rgba(168, 85, 247, .16), transparent 60%),
    radial-gradient(760px 460px at 4% 2%, rgba(124, 58, 237, .13), transparent 62%),
    radial-gradient(900px 600px at 50% 108%, rgba(91, 33, 182, .18), transparent 66%),
    var(--bg);
}
/* 极细颗粒，抵消大渐变在暗底的色带（banding）——高端感的一半来自这个 */
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .22;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

a { color: var(--violet-3); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: #fff; }
button { font-family: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.018em; color: var(--ink); }
p { margin: 0; }
img { max-width: 100%; display: block; }
input, select, textarea { font-family: inherit; font-size: 16px; }

::selection { background: rgba(168, 85, 247, .34); color: #fff; }

/* 键盘可达性：保留 focus 环，用紫色发光而不是丑陋描边 */
:focus-visible { outline: 2px solid var(--violet-2); outline-offset: 2px; border-radius: 8px; }

/* 滚动条：暗色细条，不做花哨 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(196, 181, 253, .18); border-radius: 999px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(196, 181, 253, .32); background-clip: content-box; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--ink-2); }

/* 工具类（app.js / market.js 都会用到，别删） */
.tiny { font-size: 12.5px; }
.center { text-align: center; }
.row { display: flex; align-items: center; gap: 10px; }
.row-b { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.col { display: flex; flex-direction: column; }
.grow { flex: 1; min-width: 0; }
.hide { display: none !important; }
.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* ───────────── 顶栏（logo 左 / 导航+按钮贴右） ───────────── */
.top {
  position: sticky; top: 0; z-index: 60;
  background: rgba(11, 7, 22, .58);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid var(--line-2);
  transition: box-shadow var(--dur) var(--ease-out), background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.top.scrolled {
  background: rgba(9, 6, 18, .82);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(196, 181, 253, .08), 0 18px 44px -24px rgba(0, 0, 0, .9);
}
.top-in {
  max-width: var(--max); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 14px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 17.5px; letter-spacing: -.03em;
  color: var(--ink); flex: none;
}
.logo:hover { color: var(--ink); }
/* logo：用户给的图标 + 紫色光圈 + 顶部内高光，像一枚宝石 */
.logo-mark {
  width: 34px; height: 34px; border-radius: 11px; flex: none;
  background: linear-gradient(140deg, #a855f7, #5b21b6 60%, #2e1065);
  display: grid; place-items: center; overflow: hidden;
  box-shadow: 0 4px 16px rgba(124, 58, 237, .5), 0 0 0 1px rgba(196, 181, 253, .22),
              inset 0 1px 0 rgba(255, 255, 255, .3);
  position: relative;
  transition: box-shadow var(--dur) var(--ease-out), transform var(--dur) var(--spring);
}
.logo-mark img { width: 100%; height: 100%; object-fit: cover; display: block; }
.logo-mark::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(160deg, rgba(255, 255, 255, .34), transparent 46%);
  mix-blend-mode: screen;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-en {
  font-size: 16.5px; font-weight: 800; letter-spacing: -.02em;
  background: linear-gradient(100deg, #fff, #ddd0ff 46%, #b794ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.logo-zh {
  font-size: 9.5px; letter-spacing: .34em; color: var(--ink-3); font-weight: 700;
  text-transform: uppercase; margin-top: 1px;
}
.logo:hover .logo-mark {
  box-shadow: 0 6px 22px rgba(139, 92, 246, .7), 0 0 0 1px rgba(196, 181, 253, .4),
              0 0 26px rgba(168, 85, 247, .35), inset 0 1px 0 rgba(255, 255, 255, .4);
}
.logo:active .logo-mark { transform: scale(.94); }

/* ── 关键：导航整体贴右 ──
   margin-left:auto 把 logo 与 nav 之间的所有空隙吃掉，
   nav + .top-right 作为一组靠齐右边缘（padding 20px）。 */
.nav {
  display: flex; gap: 2px; margin-left: auto; margin-right: 4px;
  position: relative; padding: 4px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 8px 24px -16px rgba(0, 0, 0, .9);
}
/* iOS 胶囊指示器：JS 移动这个元素，不做逐项 transition */
.nav-ind {
  position: absolute; top: 4px; bottom: 4px; left: 4px; width: 0; z-index: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .22), rgba(196, 181, 253, .1));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .28), 0 4px 14px rgba(124, 58, 237, .3),
              0 0 22px rgba(168, 85, 247, .22);
  /* iOS 分段指示器：380ms 是苹果原生切换的手感区（原来 520ms 偏拖沓） */
  transition: transform 380ms var(--ease-ios), width 380ms var(--ease-ios), opacity var(--dur) var(--ease-out);
  opacity: 0;
}
.nav a {
  position: relative; z-index: 1;
  padding: 8px 15px; border-radius: 999px; color: var(--ink-2);
  font-size: 14px; font-weight: 600; transition: color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}
.nav a:hover { color: #fff; background: transparent; }
.nav a.on { color: #fff; text-shadow: 0 0 18px rgba(196, 181, 253, .6); }

.top-right { display: flex; align-items: center; gap: 8px; flex: none; }

/* ───────────── iOS 系统级交互细节 ─────────────
   这一段落只管「手感」：
     · 点击：120ms 内的轻微回弹（--spring），像 iOS 按钮被按下去
     · 选中：紫色柔光而不是蓝底
     · 滚动：贴顶阴影加深 */
* { -webkit-touch-callout: none; }
.top-right .btn, .top-right .chip { transition: transform 180ms var(--spring), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out); }
.top-right .btn:active { transform: scale(.955); }
@media (hover: none) {
  .item:hover, .card.interactive:hover, .feat:hover, .prod:hover, .mh-card:hover { transform: none; }
}

/* 移动端：右上角一个 iOS 磨砂圆圈开关 */
.nav-toggle {
  display: none; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--line); background: rgba(255, 255, 255, .06);
  box-shadow: var(--sh-1), var(--hairline); cursor: pointer;
  align-items: center; justify-content: center; gap: 0; flex-direction: column;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: transform var(--dur) var(--spring), background var(--dur) var(--ease-out);
}
.nav-toggle:active { transform: scale(.9); }
.nav-toggle i {
  display: block; width: 15px; height: 1.7px; border-radius: 2px;
  background: var(--violet-3); margin: 1.7px 0;
  transition: transform var(--dur) var(--ease-ios), opacity var(--dur) var(--ease-out);
}
body.nav-open .nav-toggle i:nth-child(1) { transform: translateY(5.1px) rotate(45deg); }
body.nav-open .nav-toggle i:nth-child(2) { opacity: 0; transform: scaleX(.2); }
body.nav-open .nav-toggle i:nth-child(3) { transform: translateY(-5.1px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed; left: 12px; right: 12px; top: calc(62px + var(--safe-t));
    margin: 0; padding: 10px; border-radius: 22px;
    flex-direction: column; gap: 2px; align-items: stretch;
    background: rgba(20, 13, 38, .92);
    -webkit-backdrop-filter: saturate(180%) blur(26px); backdrop-filter: saturate(180%) blur(26px);
    box-shadow: var(--sh-3); border: 1px solid var(--line-3);
    transform-origin: top right;
    transform: scale(.94) translateY(-10px); opacity: 0; pointer-events: none;
    transition: transform var(--dur) var(--ease-ios), opacity var(--dur) var(--ease-out);
    z-index: 70;
  }
  body.nav-open .nav { transform: none; opacity: 1; pointer-events: auto; }
  .nav-ind { display: none; }
  .nav a { padding: 12px 14px; border-radius: 14px; font-size: 15px; }
  .nav a.on { background: rgba(139, 92, 246, .22); color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,.08); }
  .top-in { gap: 10px; }
  .logo-en { font-size: 15.5px; }
}

/* ───────────── 按钮 ───────────── */
.btn {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  background: linear-gradient(180deg, #a855f7, #7c3aed 62%, #6d28d9);
  color: #fff; font-weight: 700; font-size: 15px; letter-spacing: -.01em;
  cursor: pointer; white-space: nowrap; user-select: none;
  box-shadow: var(--sh-brand), inset 0 1px 0 rgba(255, 255, 255, .28);
  transition: transform var(--dur) var(--spring), box-shadow var(--dur) var(--ease-out), filter var(--dur-fast) var(--ease-out);
}
/* 高光扫过：鼠标进入时一道斜白光掠过（只扫一次，别循环，循环就廉价了） */
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--sheen); transform: translateX(-130%);
  transition: transform 620ms var(--ease-out);
}
.btn:hover::after { transform: translateX(130%); }
.btn:hover { filter: brightness(1.08); box-shadow: 0 16px 40px rgba(124, 58, 237, .6), 0 3px 10px rgba(91, 33, 182, .5), inset 0 1px 0 rgba(255, 255, 255, .34); }
.btn:active { transform: scale(.965); box-shadow: 0 4px 14px rgba(124, 58, 237, .5); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
/* ghost：暗底上的玻璃按钮，描边带一点紫 */
.btn.ghost {
  background: rgba(255, 255, 255, .06); color: var(--ink);
  border-color: var(--line-3); box-shadow: var(--hairline);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.btn.ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(196, 181, 253, .45); color: #fff; box-shadow: 0 8px 26px -12px rgba(124, 58, 237, .6), var(--hairline); }
.btn.dark { background: linear-gradient(180deg, rgba(255,255,255,.1), rgba(255,255,255,.04)); color: var(--ink); border-color: var(--line-3); box-shadow: var(--hairline); }
.btn.lime { background: linear-gradient(180deg, #d9f99d, #a3e635); color: #1a1305; box-shadow: 0 10px 26px rgba(163, 230, 53, .28), inset 0 1px 0 rgba(255, 255, 255, .6); }
.btn.danger { background: rgba(251, 113, 133, .12); color: #fda4af; border-color: rgba(251, 113, 133, .32); box-shadow: none; }
.btn.sm { padding: 8px 15px; font-size: 13.5px; }
.btn.lg { padding: 16px 32px; font-size: 16.5px; }
.btn.blk { width: 100%; }
/* hero 主 CTA：暗底上最亮的一颗 —— 白玻璃，但边缘带紫光，和紫色世界不脱节 */
.btn.hero {
  background: linear-gradient(180deg, #ffffff, #efe7ff);
  color: #2a1060;
  box-shadow: 0 16px 44px rgba(124, 58, 237, .5), 0 2px 8px rgba(0, 0, 0, .5),
              inset 0 1px 0 #fff, 0 0 0 1px rgba(255, 255, 255, .1);
}
.btn.hero:hover { box-shadow: 0 22px 56px rgba(168, 85, 247, .6), 0 0 0 1px rgba(255, 255, 255, .18), inset 0 1px 0 #fff; filter: brightness(1.02); }

/* ───────────── 卡片 ───────────── */
.card {
  position: relative;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--sh-1);
  padding: 20px;
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.card.pad-lg { padding: 24px; }
.card.flat { box-shadow: none; }
.card.interactive:hover { transform: translateY(-2px); box-shadow: var(--sh-2); border-color: var(--line-3); background: var(--card-2); }
.sect { margin: 34px 0; }
.sect-h { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 16px; gap: 12px; }
.sect-h h2 { font-size: 20px; letter-spacing: -.028em; }
.sect-h .sub { font-size: 13.5px; color: var(--ink-3); margin-top: 3px; }

/* 通用入场：给 JS 加上 .reveal 后滚入视口触发 */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 560ms var(--ease-out), transform 620ms var(--ease-ios); }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.in { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ───────────── Hero（深紫夜空 + 极光 + 高光） ───────────── */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1200px 520px at 78% -18%, rgba(232, 121, 249, .3), transparent 58%),
    radial-gradient(980px 520px at 8% 4%, rgba(124, 58, 237, .45), transparent 62%),
    radial-gradient(760px 420px at 50% 118%, rgba(91, 33, 182, .5), transparent 66%),
    linear-gradient(158deg, #0a0616 0%, #1a0f33 46%, #341a68 100%);
  border-radius: 0 0 var(--r-xl) var(--r-xl);
  padding: 60px 0 72px;
  margin-bottom: 8px;
  box-shadow: 0 30px 90px -40px rgba(59, 26, 117, .9);
}
/* 顶部一层细腻噪点，避免大面积渐变出现色带（banding） */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .3; mix-blend-mode: overlay;
  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='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
/* 网格线 + 淡出遮罩，科技感但压得很低 */
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .3;
  background-image: linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 72%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 72%);
}
/* 一道横向高光带，缓慢呼吸 */
.hero .aurora {
  position: absolute; left: -20%; right: -20%; top: -40%; height: 120%;
  pointer-events: none; filter: blur(46px); opacity: .55;
  background: conic-gradient(from 210deg at 50% 50%, rgba(168, 85, 247, .5), rgba(232, 121, 249, .25), transparent 42%, rgba(124, 58, 237, .42));
  animation: aurora 18s ease-in-out infinite alternate;
}
@keyframes aurora {
  from { transform: translate3d(-4%, -3%, 0) rotate(-4deg) scale(1); }
  to   { transform: translate3d(5%, 4%, 0) rotate(6deg) scale(1.12); }
}
.hero-in { position: relative; z-index: 2; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.hero h1 {
  font-size: clamp(32px, 5.4vw, 62px); line-height: 1.06; letter-spacing: -.042em; color: #fff;
  text-shadow: 0 2px 40px rgba(168, 85, 247, .4);
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, #fff 8%, #e9d5ff 42%, #b794ff 64%, #fff 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 26px rgba(196, 181, 253, .5));
}
.hero .lead { margin-top: 18px; font-size: clamp(15px, 2.3vw, 18px); color: rgba(243, 236, 255, .82); max-width: 42em; line-height: 1.7; }
.hero-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 999px; margin-bottom: 20px;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(230, 214, 255, .2);
  font-size: 13px; font-weight: 600; color: #f3ecff;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18), 0 6px 22px rgba(124, 58, 237, .25);
}
.hero-pill .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--lime);
  box-shadow: 0 0 0 0 rgba(163, 230, 53, .7); animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(163, 230, 53, .62); }
  70% { box-shadow: 0 0 0 9px rgba(163, 230, 53, 0); }
  100% { box-shadow: 0 0 0 0 rgba(163, 230, 53, 0); }
}
.hero-cta { margin-top: 30px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-stats {
  margin-top: 44px; display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}
.hero-stat {
  position: relative; overflow: hidden;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(230, 214, 255, .14);
  border-radius: var(--r); padding: 15px 17px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12);
  transition: transform var(--dur) var(--ease-out), background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.hero-stat:hover { transform: translateY(-3px); background: rgba(255, 255, 255, .08); border-color: rgba(232, 121, 249, .32); }
/* 静态就有微弱粉紫光（原来只在 hover 亮，导致截图里完全看不到高光） */
.hero-stat::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .38;
  background: radial-gradient(180px 90px at 80% 0%, rgba(232, 121, 249, .32), transparent 70%);
  transition: opacity var(--dur) var(--ease-out);
}
.hero-stat:hover::after { opacity: 1; }
.hero-stat b { display: block; font-size: 25px; letter-spacing: -.028em; color: #fff; }
.hero-stat span { font-size: 12.5px; color: rgba(238, 230, 255, .66); }

/* ───────────── 商品卡 ───────────── */
.prods { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(242px, 1fr)); }
.prod {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .028));
  border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 22px; box-shadow: var(--sh-1), var(--hairline);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
  cursor: pointer; display: flex; flex-direction: column;
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
/* 顶部一缕紫光，卡片悬浮时变亮 —— 这就是「高光显示」 */
.prod::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 110px; pointer-events: none;
  background: radial-gradient(240px 90px at 26% 0%, rgba(168, 85, 247, .34), transparent 72%);
  transition: opacity var(--dur) var(--ease-out); opacity: .9;
}
.prod:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 46px -16px rgba(0, 0, 0, .8), 0 0 40px -12px rgba(139, 92, 246, .55), var(--hairline);
  border-color: var(--line-3);
}
.prod:hover::before { opacity: 1; }
.prod.best {
  border-color: rgba(168, 85, 247, .55);
  box-shadow: 0 0 0 1px rgba(168, 85, 247, .3), 0 18px 50px -20px rgba(124, 58, 237, .8), var(--hairline);
}
.prod.best::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: linear-gradient(150deg, rgba(232, 121, 249, .14), transparent 40%, rgba(124, 58, 237, .12));
}
.prod .tag {
  position: absolute; top: 0; right: 18px; z-index: 2;
  background: linear-gradient(180deg, #a855f7, #6d28d9); color: #fff;
  font-size: 11.5px; font-weight: 700; letter-spacing: .02em;
  padding: 5px 12px; border-radius: 0 0 10px 10px;
  box-shadow: 0 6px 18px rgba(124, 58, 237, .5), inset 0 1px 0 rgba(255, 255, 255, .35);
}
.prod h3 { font-size: 17px; letter-spacing: -.024em; color: #fff; }
.prod .sub { font-size: 13px; color: var(--ink-3); margin-top: 4px; min-height: 20px; }
.prod .km {
  font-size: 36px; font-weight: 800; letter-spacing: -.04em; margin: 15px 0 2px; line-height: 1;
  color: #fff;
  text-shadow: 0 0 30px rgba(168, 85, 247, .45);
}
.prod .km em { font-size: 15px; font-weight: 700; font-style: normal; color: var(--violet-3); margin-left: 3px; }
.prod .per { font-size: 12.5px; color: var(--ink-3); }
.prod .buy { margin-top: 18px; display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; }
.price { font-size: 26px; font-weight: 800; letter-spacing: -.03em; color: #fff; }
.price s { font-size: 13px; color: var(--ink-3); font-weight: 500; margin-left: 6px; }
.price .cur { font-size: 15px; margin-right: 1px; color: var(--violet-3); }

/* ───────────── 特性 / 步骤 ───────────── */
.feats { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(252px, 1fr)); }
.feat {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px;
  box-shadow: var(--sh-1);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.feat:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: var(--line-3); background: var(--card-2); }
.feat .ic {
  width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center;
  font-size: 21px; margin-bottom: 14px;
  background: linear-gradient(145deg, rgba(168, 85, 247, .28), rgba(124, 58, 237, .12) 60%, rgba(255, 255, 255, .04));
  border: 1px solid rgba(196, 181, 253, .22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2), 0 8px 22px -10px rgba(124, 58, 237, .9);
}
.feat h4 { font-size: 15.5px; margin-bottom: 6px; letter-spacing: -.02em; color: #fff; }
.feat p { font-size: 13.5px; color: var(--ink-2); line-height: 1.68; }

.steps { counter-reset: s; display: grid; gap: 14px; }
.step { display: flex; gap: 15px; align-items: flex-start; }
.step .n {
  flex: none; width: 32px; height: 32px; border-radius: 11px;
  background: linear-gradient(145deg, #a855f7, #7c3aed 60%, #5b21b6);
  color: #fff; display: grid; place-items: center;
  font-weight: 800; font-size: 14px; font-variant-numeric: tabular-nums;
  box-shadow: 0 8px 22px -6px rgba(124, 58, 237, .9), inset 0 1px 0 rgba(255, 255, 255, .4);
}
.step h4 { font-size: 15px; letter-spacing: -.02em; color: #fff; }
.step p { font-size: 13.5px; color: var(--ink-2); margin-top: 3px; line-height: 1.65; }

/* ───────────── 表单（iOS 输入手感） ───────────── */
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-2); margin-bottom: 8px; letter-spacing: -.01em; }
.field .hint { font-size: 12px; color: var(--ink-3); margin-top: 6px; }
.inp {
  width: 100%; padding: 14px 16px; border: 1.5px solid var(--line);
  border-radius: var(--r-sm); background: rgba(255, 255, 255, .05); color: var(--ink);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
  outline: none; box-shadow: inset 0 1px 2px rgba(0, 0, 0, .3);
}
.inp:hover { border-color: var(--line-3); }
.inp:focus { border-color: var(--violet); box-shadow: 0 0 0 4px rgba(139, 92, 246, .2), inset 0 1px 2px rgba(0, 0, 0, .3); background: rgba(255, 255, 255, .08); }
.inp::placeholder { color: #6f6689; }
select.inp { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23c4b5fd' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 42px; }
select.inp option { background: #170e2e; color: var(--ink); }

/* iOS 分段控件（segmented control） */
.tabs {
  display: flex; gap: 0; position: relative;
  background: rgba(255, 255, 255, .05); padding: 3px; border-radius: 14px; margin-bottom: 20px;
  border: 1px solid var(--line-2);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, .4);
}
.tabs button {
  position: relative; z-index: 1; flex: 1; padding: 10px; border: none; background: none;
  border-radius: 11px; font-weight: 700; font-size: 14px; color: var(--ink-2);
  cursor: pointer; transition: color var(--dur) var(--ease-out), transform var(--dur) var(--spring), background var(--dur) var(--ease-out);
  letter-spacing: -.01em;
}
.tabs button:active { transform: scale(.97); }
.tabs button.on {
  color: #fff; background: linear-gradient(180deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, .07));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 4px 14px rgba(0, 0, 0, .4), 0 0 20px -6px rgba(168, 85, 247, .6);
  transition: color var(--dur) var(--ease-out), background var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

/* ───────────── 徽标 / 状态 ───────────── */
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 11px; border-radius: 999px; font-size: 12px; font-weight: 700;
  background: rgba(255, 255, 255, .06); color: var(--ink-2); border: 1px solid var(--line-2);
  letter-spacing: -.005em;
}
.chip.ok { background: rgba(52, 211, 153, .14); color: #6ee7b7; border-color: rgba(52, 211, 153, .28); }
.chip.warn { background: rgba(251, 191, 85, .14); color: #fcd34d; border-color: rgba(251, 191, 85, .28); }
.chip.err { background: rgba(251, 113, 133, .14); color: #fda4af; border-color: rgba(251, 113, 133, .28); }
.chip.info { background: rgba(139, 92, 246, .18); color: #ddd0ff; border-color: rgba(196, 181, 253, .3); }
.chip.dark { background: rgba(0, 0, 0, .4); color: var(--ink); border-color: var(--line); }

.kpi { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.kpi-c {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 17px 19px;
  box-shadow: var(--sh-1), var(--hairline);
}
.kpi-c .k { font-size: 12.5px; color: var(--ink-3); font-weight: 600; }
.kpi-c .v { font-size: 28px; font-weight: 800; letter-spacing: -.03em; margin-top: 4px; color: #fff; }
.kpi-c .v small { font-size: 14px; color: var(--ink-2); font-weight: 600; }

/* ───────────── 列表 ───────────── */
.list { display: flex; flex-direction: column; gap: 10px; }
.item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 16px 18px; display: flex; gap: 14px; align-items: center;
  box-shadow: var(--sh-1);
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.item:hover { border-color: var(--line-3); transform: translateY(-1px); box-shadow: var(--sh-2); background: var(--card-2); }
.item .ic {
  flex: none; width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center;
  font-size: 19px; color: var(--violet-3);
  background: linear-gradient(145deg, rgba(168, 85, 247, .26), rgba(124, 58, 237, .1));
  border: 1px solid rgba(196, 181, 253, .2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .14);
}
.item .t { font-weight: 700; font-size: 14.5px; letter-spacing: -.015em; color: #fff; }
.item .d { font-size: 12.5px; color: var(--ink-3); margin-top: 1px; }

.empty { text-align: center; padding: 50px 20px; color: var(--ink-3); }
.empty .em { font-size: 40px; margin-bottom: 10px; opacity: .5; }

/* ───────────── 进度条 ───────────── */
.bar { height: 8px; background: rgba(255, 255, 255, .08); border-radius: 999px; overflow: hidden; }
.bar > i {
  display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--violet), var(--orchid));
  box-shadow: 0 0 14px rgba(168, 85, 247, .7);
  transition: width 420ms var(--ease-ios);
}
.bar.ok > i { background: linear-gradient(90deg, #10b981, #6ee7b7); box-shadow: 0 0 14px rgba(52, 211, 153, .5); }
.bar.err > i { background: linear-gradient(90deg, #e11d48, #fb7185); box-shadow: 0 0 14px rgba(244, 63, 94, .5); }

/* ───────────── 弹层（iOS sheet 动效） ───────────── */
.mask {
  position: fixed; inset: 0; z-index: 200; background: rgba(5, 3, 10, .62);
  backdrop-filter: blur(10px) saturate(140%); -webkit-backdrop-filter: blur(10px) saturate(140%);
  display: grid; place-items: center; padding: 18px;
  animation: fade var(--dur) var(--ease-out);
}
@keyframes fade { from { opacity: 0 } }
.modal {
  background: linear-gradient(180deg, #1a102e, #120b22);
  border: 1px solid var(--line-3);
  border-radius: var(--r-lg); width: 100%; max-width: 440px;
  max-height: 88vh; overflow: auto;
  box-shadow: 0 40px 100px rgba(0, 0, 0, .7), inset 0 1px 0 rgba(255, 255, 255, .1), 0 0 80px -30px rgba(139, 92, 246, .8);
  animation: pop 340ms var(--ease-ios);
}
@keyframes pop { from { transform: translateY(22px) scale(.965); opacity: 0 } }
.modal-h { padding: 22px 24px 0; display: flex; align-items: flex-start; justify-content: space-between; }
.modal-h h3 { font-size: 18px; letter-spacing: -.026em; }
.modal-h .x {
  border: none; background: rgba(255, 255, 255, .08); width: 30px; height: 30px; border-radius: 50%;
  cursor: pointer; color: var(--ink-2); font-size: 15px; line-height: 1; flex: none;
  transition: background var(--dur) var(--ease-out), transform var(--dur) var(--spring), color var(--dur) var(--ease-out);
}
.modal-h .x:hover { background: rgba(255, 255, 255, .16); color: #fff; }
.modal-h .x:active { transform: scale(.9); }
.modal-b { padding: 18px 24px; }
.modal-f { padding: 0 24px 24px; display: flex; gap: 10px; }

/* ───────────── 吐司（磨砂浮岛） ───────────── */
.toasts {
  position: fixed; left: 50%; bottom: calc(26px + var(--safe-b)); transform: translateX(-50%);
  z-index: 300; display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none; width: max-content; max-width: 92vw;
}
.toast {
  background: rgba(30, 20, 54, .92); color: #fff; padding: 12px 20px; border-radius: 16px;
  font-size: 14px; font-weight: 600; letter-spacing: -.01em; line-height: 1.5;
  max-width: min(92vw, 520px); text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .12), 0 0 40px -16px rgba(139, 92, 246, .9);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line-3);
  animation: up 300ms var(--ease-ios);
}
@keyframes up { from { transform: translateY(14px) scale(.96); opacity: 0 } }
.toast.err { background: rgba(140, 20, 50, .94); border-color: rgba(251, 113, 133, .4); }
.toast.ok { background: rgba(10, 90, 66, .94); border-color: rgba(52, 211, 153, .4); }

/* ───────────── 底部导航（移动端 iOS tab bar） ───────────── */
.tabbar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
  background: rgba(11, 7, 22, .84);
  backdrop-filter: saturate(190%) blur(26px); -webkit-backdrop-filter: saturate(190%) blur(26px);
  border-top: 1px solid var(--line-2);
  padding: 5px 0 calc(5px + var(--safe-b));
}
.tabbar-in { display: grid; grid-template-columns: repeat(5, 1fr); }
.tabbar a {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 7px 0; font-size: 10.5px; color: var(--ink-3); font-weight: 600;
  transition: color var(--dur) var(--ease-out), transform var(--dur) var(--spring);
}
.tabbar a .i { font-size: 19px; line-height: 1; transition: transform var(--dur) var(--spring); }
.tabbar a.on { color: var(--violet-3); text-shadow: 0 0 16px rgba(196, 181, 253, .7); }
.tabbar a.on .i { transform: translateY(-1px) scale(1.06); }
.tabbar a:active { transform: scale(.94); }

/* ───────────── 骨架屏 ───────────── */
.sk {
  background: linear-gradient(90deg, rgba(255,255,255,.05) 25%, rgba(196,181,253,.13) 37%, rgba(255,255,255,.05) 63%);
  background-size: 400% 100%; animation: sh 1.4s var(--ease-out) infinite; border-radius: 10px;
}
@keyframes sh { 0% { background-position: 100% 0 } 100% { background-position: 0 0 } }

/* ───────────── 页脚 ───────────── */
.foot {
  position: relative; border-top: 1px solid var(--line-2);
  margin-top: 56px; padding: 34px 0 44px; color: var(--ink-3); font-size: 12.5px;
  background: linear-gradient(180deg, transparent, rgba(91, 33, 182, .12));
}
.foot a { color: var(--ink-2); }
.foot a:hover { color: var(--violet-3); }
.foot .brand-line { display: inline-flex; align-items: center; gap: 7px; font-weight: 700; color: var(--ink-2); }
.foot .brand-line i {
  width: 16px; height: 16px; border-radius: 5px; display: inline-block;
  background: linear-gradient(145deg, var(--violet-2), var(--violet));
}
.foot .f-brand { display: flex; align-items: center; gap: 9px; margin-bottom: 8px; }
.foot .f-brand img { width: 22px; height: 22px; border-radius: 7px; object-fit: cover;
  box-shadow: 0 2px 10px rgba(124, 58, 237, .6); }
.foot .f-brand b { font-size: 13.5px; color: var(--ink-2); letter-spacing: -.01em; }
.foot .f-ln { font-size: 12px; color: var(--ink-3); }

/* ───────────── 响应式 ───────────── */
@media (max-width: 860px) {
  .tabbar { display: block; }
  body { padding-bottom: 64px; }
  .hero { padding: 40px 0 48px; border-radius: 0 0 26px 26px; }
  .hero h1 { font-size: 31px; }
  .sect { margin: 26px 0; }
  .card { padding: 17px; }
  .prod .km { font-size: 31px; }
}
@media (max-width: 460px) {
  .wrap { padding: 0 15px; }
  .prods { grid-template-columns: 1fr 1fr; gap: 11px; }
  .prod { padding: 16px; border-radius: 20px; }
  .prod h3 { font-size: 15px; }
  .prod .km { font-size: 27px; margin: 11px 0 0; }
  .prod .buy { flex-direction: column; align-items: stretch; gap: 9px; }
  .price { font-size: 21px; }
  .prod .btn { width: 100%; padding: 10px; font-size: 14px; }
  .hero-stat b { font-size: 22px; }
}