/* ============================================================
   一莲AI 官网全局样式 v3.0  高端质感版（2026-10-12）
   ------------------------------------------------------------
   设计原则：
     1. 品牌色定稿锁定（#0F6878 / #1B9BA8 / #E8F4F6）——只提质感，不改色相
     2. 全站 18 页共享：所有 v2 类名与 CSS 变量名 100% 保留，零破坏
     3. 高级感来源：深空首屏 · 多层柔和阴影 · 渐变描边 · 玻璃拟态
                    · 流体排版层级 · 克制的微交互
   主题机制：<html data-theme="teal|indigo">，CSS 变量驱动
   ============================================================ */

:root {
  /* ---- 品牌色（定稿锁定，禁止改动）---- */
  --brand: #0F6878;
  --brand-light: #1B9BA8;
  --brand-deep: #0B5562;
  --brand-bg: #E8F4F6;
  --brand-rgb: 15, 104, 120;
  --brand-light-rgb: 27, 155, 168;
  --brand-bg-rgb: 232, 244, 246;

  /* ---- 文字 ---- */
  --ink: #1A2426;
  --ink-light: #546467;
  --ink-faint: #8A9B9E;
  --white: #FFFFFF;

  /* ---- 描边与表面 ---- */
  --border: #DCE8EA;
  --border-soft: #E8F0F1;
  --hairline: rgba(15, 104, 120, .09);
  --surface: #FFFFFF;
  --surface-1: #FBFDFE;
  --surface-2: #F5FAFB;
  --surface-3: #EDF5F7;

  /* ---- 圆角阶梯 ---- */
  --radius-xl: 26px;
  --radius-lg: 20px;
  --radius: 16px;
  --radius-sm: 12px;

  /* ---- 多层柔和阴影（环境光 + 主光）---- */
  --shadow: 0 1px 2px rgba(9, 63, 73, .04), 0 6px 20px -8px rgba(9, 63, 73, .10);
  --shadow-md: 0 2px 4px rgba(9, 63, 73, .05), 0 14px 34px -12px rgba(9, 63, 73, .16);
  --shadow-lg: 0 4px 8px rgba(9, 63, 73, .05), 0 28px 60px -20px rgba(9, 63, 73, .24);
  --shadow-xl: 0 8px 16px rgba(9, 63, 73, .06), 0 44px 90px -28px rgba(9, 63, 73, .30);

  /* ---- 渐变 ---- */
  --grad: linear-gradient(135deg, #0F6878 0%, #1B9BA8 100%);
  --grad-soft: linear-gradient(135deg, rgba(15, 104, 120, .10), rgba(27, 155, 168, .035));
  --grad-line: linear-gradient(90deg, transparent, rgba(27, 155, 168, .45), transparent);
  --grad-card: linear-gradient(180deg, #FFFFFF 0%, #FAFDFE 100%);
  --grad-card-brd: linear-gradient(150deg, rgba(27, 155, 168, .30), rgba(15, 104, 120, .05) 42%, rgba(15, 104, 120, .18));

  /* ---- 首屏深空 ---- */
  --hero-deep-1: #0B5562;
  --hero-deep-2: #093F49;
  --hero-ink: #F2FAFB;
  --hero-text: #BFDDE1;
  --hero-note: #8FB6BC;
  --hero-accent: #8FE0E8;
  --hero-accent-rgb: 143, 224, 232;
  --hero-glow: radial-gradient(110% 120% at 82% -18%, rgba(27, 155, 168, .42) 0%, transparent 58%);
  --hero-bg: linear-gradient(168deg, #0F6878 0%, var(--hero-deep-1) 46%, #06262D 100%);

  /* ---- 登录/注册底 ---- */
  --auth-deep: #D6EBEE;
  --auth-bg: linear-gradient(165deg, #EFF7F9 0%, var(--auth-deep) 100%);

  /* ---- 玻璃拟态 ---- */
  --glass-bg: rgba(255, 255, 255, .74);
  --glass-brd: rgba(255, 255, 255, .55);

  /* ---- 缓动 ---- */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-spring: cubic-bezier(.34, 1.4, .5, 1);

  /* ---- 导航高度 ---- */
  --nav-h: 72px;
}

[data-theme="teal"] {
  --brand: #0F6878;
  --brand-light: #1B9BA8;
  --brand-deep: #0B5562;
  --brand-bg: #E8F4F6;
  --brand-rgb: 15, 104, 120;
  --brand-light-rgb: 27, 155, 168;
  --brand-bg-rgb: 232, 244, 246;
  --grad: linear-gradient(135deg, #0F6878 0%, #1B9BA8 100%);
  --grad-card-brd: linear-gradient(150deg, rgba(27, 155, 168, .30), rgba(15, 104, 120, .05) 42%, rgba(15, 104, 120, .18));
  --hero-deep-1: #0B5562;
  --hero-deep-2: #093F49;
  --hero-glow: radial-gradient(110% 120% at 82% -18%, rgba(27, 155, 168, .42) 0%, transparent 58%);
  --hero-bg: linear-gradient(168deg, #0F6878 0%, var(--hero-deep-1) 46%, #06262D 100%);
  --hero-accent: #8FE0E8;
  --hero-accent-rgb: 143, 224, 232;
  --hero-text: #BFDDE1;
  --hero-note: #8FB6BC;
  --auth-deep: #D6EBEE;
  --auth-bg: linear-gradient(165deg, #EFF7F9 0%, var(--auth-deep) 100%);
}

[data-theme="indigo"] {
  --brand: #4F46E5;
  --brand-light: #7C8CF8;
  --brand-deep: #3F37C9;
  --brand-bg: #EEF2FF;
  --brand-rgb: 79, 70, 229;
  --brand-light-rgb: 124, 140, 248;
  --brand-bg-rgb: 238, 242, 255;
  --ink: #1A2426;
  --ink-light: #4B5563;
  --ink-faint: #9CA3AF;
  --border: #E5E7EB;
  --border-soft: #F1F2F6;
  --hairline: rgba(79, 70, 229, .09);
  --surface-1: #FCFCFF;
  --surface-2: #F8F9FF;
  --surface-3: #EFF1FE;
  --shadow: 0 1px 2px rgba(38, 32, 120, .05), 0 6px 20px -8px rgba(38, 32, 120, .12);
  --shadow-md: 0 2px 4px rgba(38, 32, 120, .06), 0 14px 34px -12px rgba(38, 32, 120, .18);
  --shadow-lg: 0 4px 8px rgba(38, 32, 120, .06), 0 28px 60px -20px rgba(38, 32, 120, .26);
  --shadow-xl: 0 8px 16px rgba(38, 32, 120, .07), 0 44px 90px -28px rgba(38, 32, 120, .32);
  --grad: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  --grad-soft: linear-gradient(135deg, rgba(79, 70, 229, .10), rgba(124, 58, 237, .035));
  --grad-line: linear-gradient(90deg, transparent, rgba(124, 140, 248, .45), transparent);
  --grad-card-brd: linear-gradient(150deg, rgba(124, 140, 248, .32), rgba(79, 70, 229, .05) 42%, rgba(79, 70, 229, .20));
  --hero-deep-1: #4338CA;
  --hero-deep-2: #312E81;
  --hero-glow: radial-gradient(110% 120% at 82% -18%, rgba(124, 58, 237, .42) 0%, transparent 58%);
  --hero-bg: linear-gradient(168deg, #4F46E5 0%, var(--hero-deep-1) 46%, #241E5E 100%);
  --hero-accent: #C7D2FE;
  --hero-accent-rgb: 199, 210, 254;
  --hero-text: #E0E7FF;
  --hero-note: #A5B4FC;
  --auth-deep: #E0E7FF;
  --auth-bg: linear-gradient(165deg, #F4F5FF 0%, var(--auth-deep) 100%);
}

/* ============================================================
   基础重置
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--white); }

body {
  font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Source Han Sans SC',
               'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  letter-spacing: .008em;
  font-feature-settings: 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: rgba(var(--brand-rgb), .18); color: var(--ink); }
:focus-visible { outline: 2px solid var(--brand-light); outline-offset: 2px; border-radius: 6px; }

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
strong, b { font-weight: 700; }

/* 自定义滚动条（桌面端精致感） */
@media (hover: hover) and (pointer: fine) {
  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: var(--surface-2); }
  ::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(var(--brand-rgb), .34), rgba(var(--brand-rgb), .18));
    border-radius: 99px; border: 2px solid var(--surface-2);
  }
  ::-webkit-scrollbar-thumb:hover { background: rgba(var(--brand-rgb), .48); }
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* 克制入场：首屏后区块淡入上移一次 */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.section { animation: rise .7s var(--ease) both; }

/* ============================================================
   导航栏 —— 玻璃拟态 + 滚动态
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--hairline);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, .90);
  box-shadow: 0 1px 2px rgba(9, 63, 73, .04), 0 10px 30px -16px rgba(9, 63, 73, .22);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); position: relative; transition: height .3s var(--ease); }
.nav.is-scrolled .nav-inner { height: 64px; }
.nav-logo { display: flex; align-items: center; gap: 10px; padding: 0; transition: opacity .2s; }
.nav-logo img { height: 30px; width: auto; display: block; transition: height .3s var(--ease); }
.nav.is-scrolled .nav-logo img { height: 27px; }
.nav-logo:hover { opacity: .82; }

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  position: relative;
  font-size: 14.5px; font-weight: 500; color: var(--ink-light);
  padding: 8px 0;
  transition: color .22s var(--ease);
}
.nav-links a::after {
  content: ''; position: absolute; left: 50%; right: 50%; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--grad);
  transition: left .28s var(--ease-out), right .28s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { color: var(--brand); font-weight: 600; }
.nav-links a:hover::after, .nav-links a.active::after { left: 0; right: 0; }

.nav-actions { display: flex; align-items: center; gap: 12px; }

/* ---- 按钮体系 ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 11px 24px; border-radius: 12px; font-size: 14px; font-weight: 600;
  border: none; white-space: nowrap; position: relative; overflow: hidden;
  letter-spacing: .01em;
  transition: transform .24s var(--ease-out), box-shadow .24s var(--ease), background .24s var(--ease), border-color .24s var(--ease), color .24s var(--ease);
}
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 4px 14px -4px rgba(var(--brand-rgb), .42);
}
.btn-primary::after {
  content: ''; position: absolute; top: -20%; left: -130%; width: 55%; height: 140%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .38), transparent);
  transform: skewX(-18deg); transition: left .65s var(--ease);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .28), 0 16px 30px -10px rgba(var(--brand-rgb), .48);
}
.btn-primary:hover::after { left: 140%; }
.btn-primary:active { transform: translateY(0); }

.btn-ghost { background: transparent; color: var(--brand); border: 1.5px solid rgba(var(--brand-rgb), .42); }
.btn-ghost:hover { background: var(--brand-bg); border-color: var(--brand); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--ink-light); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); background: rgba(var(--brand-bg-rgb), .5); }
.btn-lg { padding: 15px 38px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 8px 17px; font-size: 13px; border-radius: 10px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* 汉堡菜单 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .25s var(--ease); }

/* ============================================================
   页脚 —— 深色精致版
   ============================================================ */
.footer {
  position: relative; margin-top: 0; overflow: hidden;
  background: radial-gradient(120% 100% at 82% 0%, rgba(27, 155, 168, .16) 0%, transparent 58%), #0B1A1E;
  color: #A7B6B9;
}
.footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(27, 155, 168, .55), rgba(143, 224, 232, .35), transparent);
}
.footer::after {
  content: ''; position: absolute; top: -140px; right: -100px; width: 420px; height: 420px;
  border-radius: 50%; background: radial-gradient(circle, rgba(27, 155, 168, .14) 0%, transparent 68%);
  pointer-events: none;
}
.footer-inner { position: relative; z-index: 2; padding: 68px 24px 30px; max-width: 1180px; margin: 0 auto; }
.footer-top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.footer-brand p { margin-top: 16px; font-size: 13px; max-width: 350px; color: #7E9195; line-height: 1.9; }
.footer-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.footer-col h4 { color: #fff; font-size: 13px; margin-bottom: 18px; letter-spacing: .08em; font-weight: 600; }
.footer-col a { display: block; font-size: 13px; color: #A7B6B9; margin-bottom: 12px; transition: color .2s var(--ease); }
.footer-col a:hover { color: #fff; }
.footer-partners { margin-top: 40px; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, .08); }
.footer-partners h4 { color: #fff; font-size: 13px; margin-bottom: 16px; letter-spacing: .08em; font-weight: 600; }
.partner-list { display: flex; gap: 16px; flex-wrap: wrap; }
.partner-item {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .10);
  border-radius: 14px; padding: 10px 18px 10px 12px; color: #A7B6B9; font-size: 13px;
  transition: all .28s var(--ease);
}
.partner-item img { width: 34px; height: 34px; border-radius: 9px; object-fit: contain; background: #fff; padding: 3px; }
.partner-item .pi-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.partner-item .pi-text b { color: #E8F0F1; font-size: 13px; font-weight: 600; white-space: nowrap; }
.partner-item .pi-text em { color: #93A6A9; font-size: 10px; font-style: normal; white-space: nowrap; letter-spacing: .2px; }
.partner-item:hover .pi-text em { color: #B7C8CB; }
.partner-item:hover { color: #fff; border-color: rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .09); transform: translateY(-2px); }
.footer-bottom {
  margin-top: 44px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .08);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12px; color: #6B7F83; letter-spacing: .02em;
}
.footer-bottom a:hover { color: #B7C8CB; }

/* ============================================================
   通用区块
   ============================================================ */
.section { padding: 104px 0; position: relative; }
.section-sm { padding: 64px 0; }
.section-alt { background: linear-gradient(180deg, var(--surface-1) 0%, var(--surface-2) 100%); }
.section-alt::before,
.section-alt::after {
  content: ''; position: absolute; left: 0; right: 0; height: 1px;
  background: var(--grad-line); opacity: .7;
}
.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

.section-head { text-align: center; max-width: 740px; margin: 0 auto 60px; }
.section-head .tag {
  display: inline-block; padding: 6px 17px; border-radius: 999px;
  background: var(--brand-bg); color: var(--brand); font-size: 12.5px; font-weight: 600;
  letter-spacing: .07em; margin-bottom: 18px;
  box-shadow: inset 0 0 0 1px rgba(var(--brand-rgb), .06);
}
.section-head h2 {
  font-size: clamp(27px, 3.6vw, 40px); font-weight: 800; color: var(--ink);
  margin-bottom: 16px; letter-spacing: -.022em; line-height: 1.24;
}
.section-head p { color: var(--ink-light); font-size: 16px; line-height: 1.8; }
.section-head.left { text-align: left; margin-left: 0; }

/* 分隔装饰 */
.divider { height: 1px; background: var(--grad-line); margin: 0 auto; max-width: 1180px; }

/* ============================================================
   首屏 Banner（深空网格 + 光晕）
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  background: var(--hero-glow), var(--hero-bg);
  color: var(--hero-ink);
  padding: 118px 0 108px;
}
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(var(--hero-accent-rgb), .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--hero-accent-rgb), .055) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 100% at 70% 0%, #000 0%, transparent 76%);
  mask-image: radial-gradient(120% 100% at 70% 0%, #000 0%, transparent 76%);
}
.hero::after {
  content: ''; position: absolute; right: -180px; top: -200px; width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(var(--brand-light-rgb), .30) 0%, transparent 66%);
  animation: pulse 12s ease-in-out infinite alternate;
}
@keyframes pulse { from { transform: scale(1); opacity: .85; } to { transform: scale(1.1); opacity: 1; } }
.hero-inner { position: relative; z-index: 2; max-width: 800px; }
.hero h1 {
  font-size: clamp(34px, 5vw, 54px); line-height: 1.18; font-weight: 800;
  margin-bottom: 24px; letter-spacing: -.028em; color: #fff;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--hero-accent), #D8F7FA);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { font-size: 18px; color: var(--hero-text); margin-bottom: 38px; max-width: 620px; line-height: 1.85; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.hero .btn-primary {
  background: #fff; color: var(--brand);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6), 0 10px 30px -8px rgba(0, 0, 0, .34);
}
.hero .btn-primary:hover { box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6), 0 18px 40px -10px rgba(0, 0, 0, .44); }
.hero .btn-primary::after { background: linear-gradient(100deg, transparent, rgba(var(--brand-light-rgb), .22), transparent); }
.hero .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .42); backdrop-filter: blur(6px); }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.hero-note { font-size: 13px; color: var(--hero-note); letter-spacing: .03em; }

.hero-prods { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 20px; }
.hero-prod {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px; border-radius: 999px;
  background: rgba(255, 255, 255, .86); border: 1px solid var(--border-soft);
  box-shadow: 0 4px 14px rgba(var(--brand-rgb), .10); color: #2B3440;
  font-size: 14px; font-weight: 600; text-decoration: none;
  transition: transform .28s var(--ease-out), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.hero-prod:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(var(--brand-rgb), .20); border-color: var(--brand); }
.hp-ico { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 8px; background: var(--grad); color: #fff; }
.hp-price { font-size: 12px; font-weight: 700; color: var(--brand); background: rgba(var(--brand-rgb), .10); padding: 2px 10px; border-radius: 999px; }
@media (max-width: 640px) { .hero-prods { gap: 8px; } .hero-prod { padding: 7px 13px; font-size: 13px; } .hp-price { display: none; } }
.prod3-note { display: block; margin-top: 12px; font-size: 12px; color: var(--brand); opacity: .85; }
.prod-cta {
  display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin-top: 30px;
  padding: 24px; border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(var(--brand-rgb), .055), rgba(var(--brand-rgb), .13));
  border: 1px solid rgba(var(--brand-rgb), .16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6);
}
.prod-cta-tip { font-size: 13px; color: #64748B; }
@media (max-width: 640px) { .prod-cta { flex-direction: column; text-align: center; } }

/* ============================================================
   卡片 —— 渐变描边 + 光晕跟随
   ============================================================ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  position: relative; overflow: hidden;
  border: 1px solid transparent; border-radius: var(--radius-lg);
  background: var(--grad-card) padding-box, var(--grad-card-brd) border-box;
  padding: 38px 32px;
  box-shadow: var(--shadow);
  transition: transform .34s var(--ease-out), box-shadow .34s var(--ease);
}
.card::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 0%),
              rgba(var(--brand-light-rgb), .13), transparent 62%);
  opacity: 0; transition: opacity .4s var(--ease);
}
.card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); }
.card:hover::after { opacity: 1; }
.card .card-icon {
  width: 56px; height: 56px; border-radius: 18px; background: var(--brand-bg);
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
  box-shadow: inset 0 0 0 1px rgba(var(--brand-rgb), .07);
  transition: transform .34s var(--ease-spring), background .3s var(--ease);
}
.card:hover .card-icon { transform: scale(1.07) translateY(-2px); background: var(--grad); }
.card:hover .card-icon svg { stroke: #fff; }
.card h3 { font-size: 18px; margin-bottom: 10px; letter-spacing: -.012em; font-weight: 700; }
.card p { color: var(--ink-light); font-size: 14px; line-height: 1.8; }
.card .card-arrow { position: absolute; right: 26px; bottom: 24px; color: var(--brand); opacity: 0; transform: translateX(-6px); transition: all .3s var(--ease-out); }
.card:hover .card-arrow { opacity: 1; transform: none; }

/* ============================================================
   能力列表
   ============================================================ */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.feature-item {
  position: relative; overflow: hidden;
  display: flex; gap: 18px; padding: 26px; align-items: flex-start;
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), transform .28s var(--ease-out);
}
.feature-item::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad); transform: scaleY(0); transform-origin: top;
  transition: transform .34s var(--ease-out);
}
.feature-item:hover { border-color: rgba(var(--brand-rgb), .20); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.feature-item:hover::before { transform: scaleY(1); }
.feature-item .fi-num {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 12px;
  background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
  box-shadow: 0 8px 18px -6px rgba(var(--brand-rgb), .45);
}
.feature-item h4 { font-size: 16px; margin-bottom: 5px; font-weight: 700; letter-spacing: -.01em; }
.feature-item p { font-size: 13.5px; color: var(--ink-light); line-height: 1.75; }

/* ============================================================
   对比表格
   ============================================================ */
.compare-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md); background: var(--surface);
  border: 1px solid var(--border-soft);
}
.compare-table th, .compare-table td { padding: 19px 24px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--border-soft); }
.compare-table thead th {
  background: var(--grad); color: #fff; font-weight: 600; letter-spacing: .03em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18);
}
.compare-table thead th:first-child { width: 180px; }
.compare-table tbody tr:nth-child(even) { background: rgba(var(--brand-bg-rgb), .42); }
.compare-table tbody tr { transition: background .22s; }
.compare-table tbody tr:hover { background: var(--brand-bg); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table td:first-child { font-weight: 600; color: var(--ink); }
.compare-table .yes { color: var(--brand); font-weight: 700; }
.compare-table .no { color: #B0BEC2; }

/* ============================================================
   定价卡片
   ============================================================ */
.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.price-card {
  position: relative; display: flex; flex-direction: column;
  border: 1px solid var(--border-soft); border-radius: var(--radius-lg);
  padding: 40px 34px; background: var(--surface);
  box-shadow: var(--shadow);
  transition: transform .34s var(--ease-out), box-shadow .34s var(--ease), border-color .3s;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(var(--brand-rgb), .18); }
.price-card.featured {
  border: 1.5px solid transparent;
  background: var(--surface) padding-box, var(--grad) border-box;
  box-shadow: var(--shadow-xl);
}
.price-card.featured::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0; background: var(--grad);
}
.price-card .pc-hot {
  display: inline-block; margin-left: 8px; padding: 2px 10px; border-radius: 999px;
  background: var(--grad); color: #fff; font-size: 11px; font-weight: 700; vertical-align: 1px;
  box-shadow: 0 4px 10px -3px rgba(var(--brand-rgb), .5);
}
.pc-trust { margin-top: 12px; font-size: 12px; color: #64748B; }

.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #fff; font-size: 12px; padding: 6px 18px;
  border-radius: 999px; font-weight: 600; white-space: nowrap; letter-spacing: .05em;
  box-shadow: 0 8px 20px -6px rgba(var(--brand-rgb), .55), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.price-card .pc-name { font-size: 18px; font-weight: 700; margin-bottom: 6px; letter-spacing: -.012em; }
.price-card .pc-desc { font-size: 13px; color: var(--ink-light); margin-bottom: 22px; line-height: 1.7; }
.price-card .pc-price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 24px; }
.price-card .pc-price .num {
  font-size: 44px; font-weight: 800; letter-spacing: -.03em; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.price-card .pc-price .unit { font-size: 14px; color: var(--ink-light); }
.price-card .pc-feats { flex: 1; margin-bottom: 28px; }
.price-card .pc-feats li {
  font-size: 13.5px; color: var(--ink-light); padding: 8px 0 8px 26px;
  position: relative; line-height: 1.7;
}
.price-card .pc-feats li::before {
  content: '\2713'; position: absolute; left: 0; top: 9px;
  width: 17px; height: 17px; border-radius: 50%;
  background: rgba(var(--brand-rgb), .10); color: var(--brand);
  font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.price-card .pc-feats li + li { border-top: 1px solid var(--border-soft); }
.price-card .btn { width: 100%; }

/* ============================================================
   下载专区
   ============================================================ */
.download-zone {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, rgba(var(--brand-bg-rgb), .9), rgba(var(--brand-rgb), .05));
  border-radius: var(--radius-lg); padding: 52px;
  text-align: center; border: 1px dashed rgba(var(--brand-rgb), .30);
}
.download-zone h3 { font-size: 22px; margin-bottom: 10px; letter-spacing: -.015em; }
.download-zone p { color: var(--ink-light); margin-bottom: 24px; }
.download-zone .locked { color: var(--ink-light); font-size: 14px; }
.download-zone .locked strong { color: var(--brand); }

/* ============================================================
   登录 / 注册
   ============================================================ */
.auth-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--auth-bg); padding: 24px; position: relative; overflow: hidden;
}
.auth-wrap::before {
  content: ''; position: absolute; width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--brand-rgb), .12) 0%, transparent 66%);
  top: -200px; right: -160px;
}
.auth-card {
  position: relative; z-index: 2;
  width: 100%; max-width: 432px; background: var(--surface);
  border-radius: var(--radius-xl); padding: 46px 40px;
  border: 1px solid var(--glass-brd);
  box-shadow: var(--shadow-xl);
}
.auth-card .auth-logo { display: flex; justify-content: center; margin-bottom: 22px; }
.auth-card .auth-logo img { height: 58px; }
.auth-card h1 { text-align: center; font-size: 23px; margin-bottom: 8px; letter-spacing: -.02em; font-weight: 700; }
.auth-card .auth-sub { text-align: center; color: var(--ink-light); font-size: 13px; margin-bottom: 30px; }
.form-group { margin-bottom: 17px; }
.form-group label { display: block; font-size: 13px; color: var(--ink-light); margin-bottom: 7px; font-weight: 500; }
.form-group input {
  width: 100%; padding: 13px 15px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; outline: none; color: var(--ink); background: var(--surface-1);
  transition: border-color .22s, box-shadow .22s, background .22s;
}
.form-group input:focus {
  border-color: var(--brand); background: #fff;
  box-shadow: 0 0 0 4px rgba(var(--brand-rgb), .10);
}
.form-group input::placeholder { color: var(--ink-faint); }
.auth-msg { font-size: 13px; margin-top: 10px; text-align: center; min-height: 20px; }
.auth-msg.err { color: #D32F2F; }
.auth-msg.ok { color: var(--brand); }
.auth-foot { text-align: center; margin-top: 20px; font-size: 13px; color: var(--ink-light); }
.auth-foot a { color: var(--brand); font-weight: 600; }

/* ============================================================
   文档中心
   ============================================================ */
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.doc-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--border-soft); border-radius: var(--radius-lg);
  padding: 30px; background: var(--surface);
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), transform .28s var(--ease-out);
}
.doc-card:hover { border-color: rgba(var(--brand-rgb), .30); box-shadow: var(--shadow-md); transform: translateY(-5px); }
.doc-card h3 { font-size: 16px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; font-weight: 700; }
.doc-card p { font-size: 13px; color: var(--ink-light); line-height: 1.75; }
.doc-card .doc-tag {
  display: inline-block; margin-top: 16px; font-size: 12px; color: var(--brand);
  background: var(--brand-bg); padding: 5px 13px; border-radius: 999px; font-weight: 500;
}

/* ============================================================
   关于页 · 数据卡
   ============================================================ */
.value-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value-card { text-align: center; padding: 30px 18px; }
.value-card .vc-num {
  font-size: 38px; font-weight: 800; margin-bottom: 8px; letter-spacing: -.03em; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.value-card h4 { font-size: 15px; margin-bottom: 6px; font-weight: 700; }
.value-card p { font-size: 13px; color: var(--ink-light); line-height: 1.75; }

/* ============================================================
   通用工具
   ============================================================ */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; }
.bg-light { background: var(--brand-bg); }
.flow { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }
.flow-step {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 22px 26px; text-align: center; min-width: 138px;
  box-shadow: var(--shadow);
  transition: transform .28s var(--ease-out), box-shadow .28s var(--ease);
}
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.flow-step .fs-title { font-weight: 700; font-size: 14px; color: var(--brand); margin-bottom: 5px; }
.flow-step .fs-sub { font-size: 12px; color: var(--ink-light); }
.flow-arrow { color: rgba(var(--brand-rgb), .45); font-size: 20px; font-weight: 700; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, .88); backdrop-filter: blur(12px);
  color: var(--brand); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; pointer-events: none;
  transform: translateY(14px) scale(.9);
  transition: opacity .3s var(--ease), transform .3s var(--ease-out), box-shadow .3s;
}
.to-top.on { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

/* ============================================================
   滚动入场（组件级飞入）
   ============================================================ */
.rv {
  opacity: 0; transform: translateY(42px);
  will-change: opacity, transform;
  transition: opacity .85s var(--ease-out), transform .85s var(--ease-out);
}
.rv.on { opacity: 1; transform: none; }
.rv[data-dir="left"] { transform: translateX(-48px); }
.rv[data-dir="right"] { transform: translateX(48px); }
.rv[data-dir="scale"] { transform: scale(.94); }
.rv[data-dir="left"].on, .rv[data-dir="right"].on, .rv[data-dir="scale"].on { transform: none; }

/* ============================================================
   三款产品立体货架（product.html）
   ============================================================ */
.prod3-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1080px; margin: 0 auto; padding: 4px 0 44px; }
.prod3-card {
  position: relative; display: block; text-decoration: none; border-radius: var(--radius-xl);
  background: var(--grad-card) padding-box, var(--grad-card-brd) border-box;
  border: 1px solid transparent;
  padding: 32px 28px 26px; overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .32s var(--ease-out), box-shadow .32s var(--ease);
}
.prod3-card::before {
  content: ''; position: absolute; top: -64px; right: -64px; width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--brand-rgb), .11) 0%, transparent 70%);
}
.prod3-card::after {
  content: ''; position: absolute; left: 26px; right: 26px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .34s var(--ease-out);
}
.prod3-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.prod3-card:hover::after { transform: scaleX(1); }
.prod3-ico {
  width: 62px; height: 62px; border-radius: 19px; background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 24px -8px rgba(var(--brand-rgb), .48);
  margin-bottom: 18px; transition: transform .32s var(--ease-spring);
}
.prod3-card:hover .prod3-ico { transform: translateY(-4px) scale(1.06); }
.prod3-ico svg { width: 30px; height: 30px; stroke: #fff; stroke-width: 16; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.prod3-tag {
  position: absolute; top: 24px; right: 22px; font-size: 12px; font-weight: 700; color: #fff; background: var(--grad);
  border-radius: 999px; padding: 5px 13px; box-shadow: 0 6px 16px -5px rgba(var(--brand-rgb), .5);
}
.prod3-card h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin: 0 0 8px; letter-spacing: -.015em; }
.prod3-card .p3-sub { font-size: 13px; color: var(--ink-light); line-height: 1.75; margin: 0 0 16px; min-height: 48px; }
.prod3-card .p3-price { font-size: 24px; font-weight: 800; color: var(--brand); margin: 0 0 18px; letter-spacing: -.02em; }
.prod3-card .p3-price small { font-size: 12.5px; font-weight: 400; color: var(--ink-faint); letter-spacing: 0; }
.prod3-go {
  display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; color: #fff;
  background: var(--grad); border-radius: 999px; padding: 10px 21px; text-decoration: none;
  box-shadow: 0 8px 20px -7px rgba(var(--brand-rgb), .48);
  transition: transform .24s var(--ease-out), box-shadow .24s var(--ease);
}
.prod3-card:hover .prod3-go { transform: translateY(-2px); box-shadow: 0 14px 28px -8px rgba(var(--brand-rgb), .55); }
.prod3-go .arr { font-size: 16px; line-height: 1; transition: transform .24s var(--ease-out); }
.prod3-card:hover .prod3-go .arr { transform: translateX(4px); }
@media (max-width: 900px) { .prod3-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .prod3-grid { grid-template-columns: 1fr; } }

/* ============================================================
   首页服务入口卡立体增强
   ============================================================ */
.entry-card { position: relative; overflow: hidden; box-shadow: var(--shadow); }
.entry-card::before {
  content: ''; position: absolute; top: -46px; right: -46px; width: 150px; height: 150px; border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--brand-rgb), .10) 0%, transparent 70%);
}
.entry-card:hover { transform: translateY(-9px); box-shadow: var(--shadow-lg); }
.ec-ico {
  width: 48px; height: 48px; border-radius: 15px; background: var(--grad);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
  box-shadow: 0 9px 20px -6px rgba(var(--brand-rgb), .46);
  transition: transform .32s var(--ease-spring);
}
.entry-card:hover .ec-ico { transform: translateY(-4px) scale(1.07); }
.ec-ico svg { width: 23px; height: 23px; stroke: #fff; stroke-width: 16; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.ec-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--brand); background: var(--brand-bg); border-radius: 999px; padding: 4px 12px; margin-top: 14px; }

/* ============================================================
   首页 · 愿景板块（原 index 内联样式收编）
   ============================================================ */
.vision-hero {
  position: relative; overflow: hidden;
  background: var(--hero-glow), var(--hero-bg);
  color: var(--hero-ink);
  min-height: 92vh; display: flex; align-items: center;
}
.vision-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(var(--hero-accent-rgb), .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--hero-accent-rgb), .055) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 0%, transparent 78%);
}
.vision-hero::after {
  content: ''; position: absolute; right: -160px; top: -180px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(var(--brand-light-rgb), .26) 0%, transparent 66%);
  animation: pulse 14s ease-in-out infinite alternate;
}
.vision-hero .container { position: relative; z-index: 2; text-align: center; }
.vh-title {
  font-size: clamp(38px, 6.4vw, 74px); line-height: 1.08; font-weight: 800;
  letter-spacing: -.032em; color: #fff; margin-bottom: 28px;
}
.vh-title .line { display: block; }
.vh-title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--hero-accent), #DFF9FC);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.vh-sub { font-size: clamp(15px, 1.7vw, 19px); color: var(--hero-text); max-width: 560px; margin: 0 auto 42px; line-height: 1.85; }
.vh-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.vh-actions .btn-primary { background: #fff; color: var(--brand); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6), 0 12px 34px -8px rgba(0, 0, 0, .38); }
.vh-actions .btn-primary:hover { transform: translateY(-2px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6), 0 20px 46px -10px rgba(0, 0, 0, .48); }
.vh-actions .btn-primary::after { background: linear-gradient(100deg, transparent, rgba(var(--brand-light-rgb), .22), transparent); }
.vh-actions .btn-ghost { color: #fff; border-color: rgba(143, 224, 232, .48); backdrop-filter: blur(6px); }
.vh-actions .btn-ghost:hover { background: rgba(255, 255, 255, .10); border-color: rgba(255, 255, 255, .8); }
.vh-scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--hero-note); font-size: 12px; letter-spacing: .2em;
}
.vh-scroll .arrow {
  width: 18px; height: 18px; border-right: 2px solid var(--hero-note); border-bottom: 2px solid var(--hero-note);
  transform: rotate(45deg); animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: .5; }
  50% { transform: rotate(45deg) translate(4px, 4px); opacity: 1; }
}
@media (max-width: 760px) { .vision-hero { min-height: 82vh; } .vh-scroll { display: none; } }

/* 通用小节头（愿景页沿用 .vj-head） */
.vj-head { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.vj-head .tag {
  display: inline-block; padding: 6px 17px; border-radius: 999px;
  background: var(--brand-bg); color: var(--brand); font-size: 12.5px; font-weight: 600;
  letter-spacing: .07em; margin-bottom: 18px; box-shadow: inset 0 0 0 1px rgba(var(--brand-rgb), .06);
}
.vj-head h2 { font-size: clamp(27px, 3.6vw, 40px); font-weight: 800; color: var(--ink); letter-spacing: -.022em; line-height: 1.24; }
.vj-head p { color: var(--ink-light); font-size: 15.5px; margin-top: 14px; line-height: 1.8; }

/* 愿景时间轴 */
.vj { padding: 112px 0; }
.vj-timeline { max-width: 920px; margin: 0 auto; position: relative; padding: 6px 0; }
.vj-timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, transparent, rgba(var(--brand-rgb), .35) 12%, rgba(var(--brand-rgb), .35) 88%, transparent);
  transform: translateX(-50%);
}
.vj-item { position: relative; width: 50%; padding: 0 56px 62px 0; }
.vj-item:nth-child(even) { left: 50%; padding: 0 0 62px 56px; }
.vj-item:last-child { padding-bottom: 0; }
.vj-node {
  position: absolute; top: 8px; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 4px solid var(--brand);
  box-shadow: 0 0 0 6px var(--brand-bg), 0 4px 12px -2px rgba(var(--brand-rgb), .4);
}
.vj-item:nth-child(odd) .vj-node { right: -9px; }
.vj-item:nth-child(even) .vj-node { left: -9px; }
.vj-phase {
  display: inline-block; padding: 5px 15px; border-radius: 999px;
  background: var(--brand-bg); color: var(--brand); font-size: 12.5px; font-weight: 700;
  letter-spacing: .08em; margin-bottom: 14px;
}
.vj-item h3 { font-size: 22px; font-weight: 700; color: var(--ink); margin-bottom: 10px; letter-spacing: -.015em; }
.vj-item p { color: var(--ink-light); font-size: 14.5px; line-height: 1.9; }
@media (max-width: 760px) {
  .vj-timeline::before { left: 8px; }
  .vj-item, .vj-item:nth-child(even) { width: 100%; left: 0; padding: 0 0 56px 42px; }
  .vj-item:nth-child(odd) .vj-node, .vj-item:nth-child(even) .vj-node { left: -1px; right: auto; }
}

/* 使命愿景价值观 */
.mv { background: linear-gradient(180deg, var(--surface-1) 0%, var(--surface-3) 100%); padding: 112px 0; position: relative; overflow: hidden; }
.mv::after {
  content: ''; position: absolute; width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--brand-rgb), .15) 0%, transparent 66%);
  top: -190px; right: -130px;
}
.mv .container { position: relative; z-index: 2; }
.mv-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.mv-card {
  position: relative; overflow: hidden;
  border: 1px solid transparent; border-radius: var(--radius-lg);
  background: var(--grad-card) padding-box, var(--grad-card-brd) border-box;
  padding: 40px 32px; box-shadow: var(--shadow);
  transition: transform .34s var(--ease-out), box-shadow .34s var(--ease);
}
.mv-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); }
.mv-ico {
  width: 54px; height: 54px; border-radius: 17px; background: var(--grad); color: #fff;
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
  box-shadow: 0 10px 22px -7px rgba(var(--brand-rgb), .48);
  transition: transform .34s var(--ease-spring);
}
.mv-card:hover .mv-ico { transform: translateY(-3px) scale(1.06); }
.mv-card .mv-k { font-size: 12.5px; font-weight: 700; letter-spacing: .16em; color: var(--brand); margin-bottom: 7px; }
.mv-card h3 { font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 10px; letter-spacing: -.015em; }
.mv-card p { color: var(--ink-light); font-size: 14px; line-height: 1.85; }
@media (max-width: 860px) { .mv-cards { grid-template-columns: 1fr; } }

/* 品牌信念（莲） */
.lotus { position: relative; overflow: hidden; padding: 112px 0; }
.lotus-inner { max-width: 740px; margin: 0 auto; position: relative; z-index: 2; text-align: left; }
.lotus h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; color: var(--ink); letter-spacing: -.022em; margin-bottom: 18px; line-height: 1.3; }
.lotus p { color: var(--ink-light); font-size: 16px; line-height: 2.05; }
.lotus p b { color: var(--brand); font-weight: 700; }

/* 收尾 CTA */
.future {
  position: relative; overflow: hidden;
  background: var(--hero-glow), var(--hero-bg);
  color: var(--hero-ink); padding: 112px 0; text-align: center;
}
.future::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(var(--hero-accent-rgb), .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--hero-accent-rgb), .05) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(100% 100% at 50% 60%, #000 0%, transparent 76%);
  mask-image: radial-gradient(100% 100% at 50% 60%, #000 0%, transparent 76%);
}
.future .container { position: relative; z-index: 2; }
.future h2 { font-size: clamp(28px, 4.6vw, 48px); font-weight: 800; color: #fff; letter-spacing: -.028em; margin-bottom: 18px; line-height: 1.2; }
.future p { color: var(--hero-text); font-size: 16px; max-width: 540px; margin: 0 auto 34px; line-height: 1.85; }
.future .btn-primary { background: #fff; color: var(--brand); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .6), 0 12px 34px -8px rgba(0, 0, 0, .38); }
.future .btn-primary:hover { transform: translateY(-2px); }
.future .btn-primary::after { background: linear-gradient(100deg, transparent, rgba(var(--brand-light-rgb), .22), transparent); }
.future .btn-ghost { color: #fff; border-color: rgba(143, 224, 232, .48); backdrop-filter: blur(6px); }
.future .btn-ghost:hover { background: rgba(255, 255, 255, .10); border-color: #fff; }

/* ============================================================
   信任 / 数字展示条
   ============================================================ */
.trust-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border: 1px solid var(--border-soft); border-radius: var(--radius-lg);
  background: var(--surface); box-shadow: var(--shadow); overflow: hidden;
}
.trust-item { padding: 32px 22px; text-align: center; position: relative; }
.trust-item + .trust-item { border-left: 1px solid var(--border-soft); }
.trust-item .ti-num {
  font-size: 32px; font-weight: 800; letter-spacing: -.03em; line-height: 1.1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.trust-item .ti-label { font-size: 13px; color: var(--ink-light); margin-top: 6px; }
@media (max-width: 760px) {
  .trust-bar { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(3) { border-left: none; }
  .trust-item:nth-child(n+3) { border-top: 1px solid var(--border-soft); }
}

/* 步骤条 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: st; }
.step-item {
  position: relative; padding: 36px 28px 32px;
  border: 1px solid var(--border-soft); border-radius: var(--radius-lg);
  background: var(--surface); box-shadow: var(--shadow);
  counter-increment: st;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease), border-color .3s;
}
.step-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(var(--brand-rgb), .22); }
.step-item::before {
  content: '0' counter(st); position: absolute; top: 20px; right: 24px;
  font-size: 40px; font-weight: 800; letter-spacing: -.04em; line-height: 1;
  color: rgba(var(--brand-rgb), .10);
}
.step-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.step-item p { font-size: 13.5px; color: var(--ink-light); line-height: 1.8; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .cards, .price-cards, .doc-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .value-cards { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column; padding: 20px 24px;
    border-bottom: 1px solid var(--border); gap: 18px; align-items: flex-start;
    box-shadow: var(--shadow-lg);
  }
  .nav-links a { font-size: 15px; }
  .nav-links a::after { display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-actions { gap: 8px; }
  .hero { padding: 76px 0 68px; }
  .hero h1 { font-size: clamp(30px, 7vw, 38px); }
  .hero p { font-size: 16px; }
  .section { padding: 66px 0; }
  .vj, .mv, .lotus, .future { padding: 70px 0; }
  .section-head h2, .vj-head h2 { font-size: 27px; }
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 13px 11px; }
  .download-zone { padding: 34px 20px; }
  .auth-card { padding: 36px 26px; }
  .to-top { right: 16px; bottom: 16px; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .footer-cols { gap: 40px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
  .price-card .pc-price .num { font-size: 38px; }
}

@media (prefers-reduced-motion: reduce) {
  .section, .hero::after, .vision-hero::after { animation: none; }
  .rv { opacity: 1; transform: none; transition: none; }
  * { transition-duration: .01ms !important; }
}

/* 打印 */
@media print {
  .nav, .to-top, .footer { display: none; }
  body { background: #fff; }
}


/* ============================================================
   v3.1 分组分类导航（2026-10-12）
   17 页统一：首页 / 产品 / 开发者 / 支持 / 关于
   ============================================================ */
.nav-group { position: relative; display: flex; align-items: center; }
.nav-group > a.nav-group-btn { display: inline-flex; align-items: center; gap: 5px; }
.nav-group .caret { width: 9px; height: 9px; margin-top: 1px; opacity: .55; transition: transform .24s var(--ease); }
.nav-group:hover > a.nav-group-btn,
.nav-group.is-open > a.nav-group-btn { color: var(--brand); font-weight: 600; }
.nav-group:hover > a.nav-group-btn::after,
.nav-group.is-open > a.nav-group-btn::after { left: 0; right: 0; }

.nav-drop {
  position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 292px; padding: 10px;
  background: #fff; border: 1px solid var(--hairline); border-radius: 16px;
  box-shadow: 0 1px 2px rgba(9, 63, 73, .05), 0 26px 50px -22px rgba(9, 63, 73, .34);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  z-index: 130;
}
.nav-drop::before { content: ''; position: absolute; top: -18px; left: 0; right: 0; height: 18px; }
.nav-group:hover .nav-drop,
.nav-group:focus-within .nav-drop,
.nav-group.is-open .nav-drop {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-group:hover .caret,
.nav-group.is-open .caret { transform: rotate(180deg); }

.nav-drop a { display: block; padding: 11px 14px; border-radius: 11px; transition: background .18s var(--ease); }
.nav-drop a::after { display: none; }
.nav-drop a b { display: block; font-size: 14px; font-weight: 600; color: var(--ink); line-height: 1.4; }
.nav-drop a em { display: block; font-style: normal; font-size: 12.5px; color: var(--ink-light); margin-top: 3px; line-height: 1.5; }
.nav-drop a:hover { background: var(--brand-bg); }
.nav-drop a:hover b { color: var(--brand); }
.nav-drop a.ext b::after { content: "\2197"; margin-left: 6px; font-size: 11px; opacity: .5; }

@media (max-width: 960px) {
  .nav-links { gap: 0; padding: 14px 22px 20px; align-items: stretch; }
  .nav-links > a, .nav-group { width: 100%; border-bottom: 1px solid var(--hairline); }
  .nav-links > a { padding: 15px 0; }
  .nav-group { display: block; }
  .nav-group > a.nav-group-btn { width: 100%; justify-content: space-between; padding: 15px 0; }
  .nav-group .caret { width: 11px; height: 11px; }
  .nav-drop {
    position: static; left: auto; top: auto; transform: none; min-width: 0;
    opacity: 1; visibility: visible; pointer-events: auto;
    display: none; padding: 0 0 12px 14px;
    background: transparent; border: none; border-radius: 0; box-shadow: none;
  }
  .nav-group:hover .nav-drop,
  .nav-group.is-open .nav-drop { display: block; transform: none; }
  .nav-drop::before { display: none; }
  .nav-drop a { padding: 10px; }
  .nav-drop a b { font-size: 13.5px; }
  .nav-drop a em { font-size: 12px; }
}

/* 产品流程引导条（复用 .flow 体系，补强） */
.flow-note { text-align: center; margin-top: 20px; font-size: 13px; color: var(--ink-light); }
.flow-note a { color: var(--brand); font-weight: 600; }