/* ==========================================================================
   禛好智能 · 官网重构样式表
   设计语言：对齐原站视觉体系（浅色基调 + 蓝色主色）
   - 主色：原站蓝 #1a73e8（原站 Hero 按钮、Logo、导航高亮所用）
   - 辅助色：原站粉 #e91e63（原站 Argon 主题强调色）
   - 结构色：原站墨蓝灰 #2c3e50 / #344767，浅底 #f0f2f5
   - 产品色：七条产品线各自对应一种花卉色，形成可扩展的色彩矩阵
   ========================================================================== */

/* ----------------------------- 1. 设计令牌 ----------------------------- */
:root {
  /* 墨蓝灰：标题、正文与深色元素（取自原站 Argon 色板） */
  --ink-900: #1f2d3d;
  --ink-800: #2c3e50;
  --ink-700: #344767;
  --ink-600: #46587a;

  /* 品牌主色：原站蓝 #1a73e8 */
  --brand-700: #1558b8;
  --brand-600: #1668d4;
  --brand-500: #1a73e8;
  --brand-400: #4a9bf5;
  --brand-200: #bbdefb;
  --brand-050: #e9f2fe;

  /* 原站辅助色：粉 #e91e63 */
  --accent-700: #a8124a;
  --accent-600: #d81b60;
  --accent-500: #e91e63;
  --accent-400: #f06292;
  --accent-200: #f8bbd0;
  --accent-050: #fdeef3;

  /* 中性色（原站浅底 #f0f2f5 / 边框 #dee2e6 / 次级文字 #7b809a） */
  --paper: #ffffff;
  --surface: #f5f7fa;
  --surface-2: #eff2f6;
  --line: #e6eaf0;
  --line-strong: #dee2e6;
  --text: #2c3e50;
  --text-soft: #56657d;
  --text-mute: #7b809a;

  /* 花卉色：产品线识别色 */
  --iris: #5c6ae0;      /* 鸢尾花 · 智能矩阵 */
  --hyacinth: #1a73e8;  /* 风信子 · SCRM（同主色蓝） */
  --violet: #9c4dd8;    /* 紫罗兰 · 私域商城 */
  --jasmine: #d99416;   /* 茉莉 · ERP */
  --rose: #e91e63;      /* 玫瑰 · 数字人直播（同原站粉） */
  --lavender: #7c74ea;  /* 薰衣草 · 智能投放 */
  --lily: #12a17f;      /* 百合 · 智能外呼 */
  --carnation: #e2607f; /* 康乃馨 · 抖音小程序 */
  --peony: #d9528a;     /* 牡丹 · GEO */

  /* 功能色（原站勾选绿 #4caf50） */
  --success: #4caf50;
  --warning: #dd9620;
  --star: #f0a020;

  /* AI 视觉层：深空底 + 极光渐变（保留原站蓝粉主色基因） */
  --void-900: #050b18;
  --void-800: #081226;
  --void-700: #0c1c38;
  --aurora-a: #1a73e8;
  --aurora-b: #6aa8ff;
  --aurora-c: #e91e63;
  --aurora-d: #7c4dff;
  --grad-ai: linear-gradient(100deg, #6aa8ff 0%, #1a73e8 38%, #7c4dff 68%, #e91e63 100%);
  --glow-blue: 0 0 0 1px rgba(26, 115, 232, 0.32), 0 18px 44px rgba(26, 115, 232, 0.28);
  --noise: 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='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");


  /* 排版 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Alibaba PuHuiTi",
    "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-num: "Inter", "SF Pro Display", -apple-system, "Segoe UI", sans-serif;

  /* 尺度 */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(31, 45, 61, 0.05);
  --shadow-sm: 0 4px 14px rgba(31, 45, 61, 0.06);
  --shadow: 0 12px 32px rgba(31, 45, 61, 0.08);
  --shadow-lg: 0 28px 60px rgba(31, 45, 61, 0.12);

  --container: 1200px;
  --header-h: 72px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--brand-200);
  color: var(--ink-900);
}

/* ----------------------------- 3. 布局工具 ----------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--surface {
  background: var(--surface);
}

/* 对比区块：浅蓝底（对齐原站浅色基调，不再使用深底） */
.section--ink {
  background: linear-gradient(180deg, #f7faff, #eef4fd);
  color: var(--text);
}

.section--ink h1,
.section--ink h2,
.section--ink h3,
.section--ink h4 {
  color: var(--ink-900);
}

.grid {
  display: grid;
  gap: 24px;
}

.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)); }

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ----------------------------- 4. 文字体系 ----------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-600);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  opacity: 0.6;
}

.eyebrow--light { color: var(--brand-500); }

.display {
  font-size: clamp(32px, 4.6vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 800;
}

.h1 { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: -0.02em; }
.h2 { font-size: clamp(24px, 2.6vw, 36px); letter-spacing: -0.02em; }
.h3 { font-size: clamp(19px, 1.6vw, 22px); }
.h4 { font-size: 17px; }

/* 大标题断行均衡: 避免移动端出现孤字成行(如"负责"单独一行), 不支持的浏览器自动忽略 */
.display, .h1, .h2 { text-wrap: balance; }

.lead {
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.75;
  color: var(--text-soft);
}

.section--ink .lead,
.section--ink .muted { color: var(--text-mute); }

.muted { color: var(--text-mute); }
.soft { color: var(--text-soft); }

.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head .h2 { margin: 14px 0 16px; }

.grad-text {
  background: linear-gradient(96deg, var(--brand-600), var(--rose) 40%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ----------------------------- 5. 按钮 ----------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.2s var(--ease), border-color 0.2s var(--ease),
    color 0.2s var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(180deg, var(--brand-500), var(--brand-600));
  color: #fff;
  box-shadow: 0 8px 20px rgba(26, 115, 232, 0.26);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(26, 115, 232, 0.32);
}

/* 粉色强调按钮（对应用原站 Argon 粉色强调） */
.btn--accent {
  background: linear-gradient(180deg, var(--accent-500), var(--accent-600));
  color: #fff;
  box-shadow: 0 8px 20px rgba(233, 30, 99, 0.24);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(233, 30, 99, 0.3);
}

.btn--ink {
  background: var(--ink-800);
  color: #fff;
}

.btn--ink:hover {
  background: var(--ink-700);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink-800);
  border: 1.5px solid var(--line-strong);
}

.btn--ghost:hover {
  border-color: var(--ink-800);
  background: #fff;
  transform: translateY(-2px);
}

/* 浅色底上的次要按钮（原用于深色区的反白按钮，浅色主题下改为白底蓝框） */
.btn--onink {
  background: #fff;
  border: 1.5px solid var(--brand-200);
  color: var(--brand-600);
}

.btn--onink:hover {
  background: var(--brand-050);
  border-color: var(--brand-400);
  transform: translateY(-2px);
}

.btn--sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn--lg { height: 54px; padding: 0 32px; font-size: 16px; }
.btn--block { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 文字箭头链接 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-600);
}

.link-arrow svg { transition: transform 0.22s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ----------------------------- 6. 顶部导航 ----------------------------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: calc(var(--header-h) + env(safe-area-inset-top, 0px));
  padding-top: env(safe-area-inset-top, 0px);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

.header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(31, 45, 61, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand__mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

/* 新品牌标识（图片版）：保持纵横比，按高度对齐 */
img.brand__mark {
  width: auto;
  height: 34px;
  object-fit: contain;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--ink-900);
}

.brand__sub {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-soft);
}

.nav__link:hover { color: var(--ink-900); background: var(--surface); }

.nav__link.is-active {
  color: var(--brand-600);
  font-weight: 600;
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  transform: translateX(-50%);
  background: var(--brand-500);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  background: #fff;
}

.nav-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 1.6px;
  background: var(--ink-800);
  border-radius: 2px;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.6px;
  background: var(--ink-800);
  border-radius: 2px;
  transition: transform 0.25s var(--ease);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span::after { transform: translateY(-6px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 99;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 12px 20px 22px;
  display: none;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

.drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.drawer a {
  display: block;
  padding: 13px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-800);
  border-bottom: 1px solid var(--surface-2);
}

.drawer .btn { margin-top: 18px; }

/* ----------------------------- 7. 英雄区（深空极光 + 玻璃拟态，原站蓝粉配色基因） ----------------------------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 88px) 0 108px;
  background: radial-gradient(130% 120% at 10% -10%, #16305a 0%, #0b1832 44%, var(--void-900) 100%);
  color: #d7e3f5;
  overflow: hidden;
  isolation: isolate;
}

/* 极光光斑 */
.hero__aurora {
  position: absolute;
  inset: -25% -15%;
  z-index: -2;
  filter: blur(70px);
  opacity: 0.6;
  pointer-events: none;
}

.hero__aurora i {
  position: absolute;
  display: block;
  border-radius: 50%;
  mix-blend-mode: screen;
}

.hero__aurora i:nth-child(1) {
  top: 4%;
  left: 6%;
  width: 46%;
  height: 62%;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.85), transparent 66%);
  animation: auroraDrift 22s ease-in-out infinite;
}

.hero__aurora i:nth-child(2) {
  top: -8%;
  right: 8%;
  width: 42%;
  height: 58%;
  background: radial-gradient(circle, rgba(233, 30, 99, 0.5), transparent 66%);
  animation: auroraDrift 26s ease-in-out infinite reverse;
}

.hero__aurora i:nth-child(3) {
  bottom: -18%;
  left: 38%;
  width: 44%;
  height: 60%;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.6), transparent 68%);
  animation: auroraDrift 30s ease-in-out infinite;
}

/* 网格 + 噪点 */
.hero__grid-lines {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(122, 178, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 178, 255, 0.09) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 88% 68% at 50% 34%, #000 24%, transparent 76%);
}

.hero__noise {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: var(--noise);
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 7px 16px 7px 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(122, 178, 255, 0.26);
  font-size: 13px;
  color: #c3d5ee;
  backdrop-filter: blur(10px);
}

/* "AI 驱动"胶囊: 任何屏宽下不压缩、不拆字, 空间不足时长文字整体换行 */
.hero__badge b {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  white-space: nowrap;
  height: 22px;
  padding: 0 11px;
  border-radius: var(--radius-pill);
  background: var(--grad-ai);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.hero__badge b::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 8px 2px rgba(255, 255, 255, 0.85);
  animation: pulseDot 2s ease-in-out infinite;
}

.hero h1 {
  margin: 24px 0 22px;
  color: #fff;
  text-shadow: 0 0 60px rgba(26, 115, 232, 0.35);
}

/* AI 渐变字 */
.grad-ai {
  background: var(--grad-ai);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradShift 8s ease-in-out infinite;
}

.hero__lead {
  max-width: 540px;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.8;
  color: #a8bcd8;
}

.hero__flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 28px 0 34px;
}

.hero__flow span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(122, 178, 255, 0.2);
  font-size: 14px;
  font-weight: 500;
  color: #dbe7f8;
  backdrop-filter: blur(8px);
}

.hero__flow span i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6aa8ff;
  box-shadow: 0 0 10px 2px rgba(106, 168, 255, 0.8);
}

.hero__flow svg { color: rgba(122, 178, 255, 0.4); flex-shrink: 0; }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid rgba(122, 178, 255, 0.16);
}

.hero__stat b {
  display: block;
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(180deg, #ffffff, #9dc3ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__stat > span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: #8098b8;
}

/* 右侧产品矩阵卡（玻璃拟态 + 光晕） */
.hero__panel {
  position: relative;
  padding: 22px;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(140, 185, 255, 0.22);
  backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 40px 90px rgba(3, 10, 25, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

/* 顶部流动高光 */
.hero__panel::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, rgba(122, 178, 255, 0.9), rgba(233, 30, 99, 0.6), transparent);
  animation: sheen 6s ease-in-out infinite;
}

.hero__panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(140, 185, 255, 0.16);
  font-size: 12.5px;
  color: #8ba3c4;
}

.hero__panel-head b {
  font-size: 14px;
  color: #fff;
  font-weight: 700;
}

.hero__panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.pillar {
  padding: 13px 14px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(140, 185, 255, 0.14);
  transition: background-color 0.22s var(--ease), transform 0.22s var(--ease),
    border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.pillar:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(140, 185, 255, 0.36);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(6, 16, 40, 0.5);
}

.pillar__dot {
  width: 26px;
  height: 26px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  margin-bottom: 9px;
  background: var(--c, var(--brand-500));
  box-shadow: 0 0 16px color-mix(in srgb, var(--c, var(--brand-500)) 70%, transparent);
}

.pillar__dot svg { width: 15px; height: 15px; color: #fff; }

.pillar__name {
  font-size: 13.5px;
  font-weight: 600;
  color: #eaf2ff;
}

.pillar__cat {
  font-size: 11.5px;
  color: #7f97b8;
}

.hero__panel-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(140, 185, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12.5px;
  color: #8ba3c4;
}

/* 内页页头 */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 58px) 0 68px;
  background: linear-gradient(180deg, var(--brand-050), #fff 82%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.12), transparent 66%);
}

.page-hero__inner { position: relative; z-index: 1; max-width: 760px; }
.page-hero .h1 { margin: 16px 0 18px; }

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 6px;
}

.crumbs a:hover { color: var(--brand-600); }
.crumbs span { color: var(--line-strong); }

/* ----------------------------- 8. 通用卡片 ----------------------------- */
.card {
  position: relative;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    border-color 0.28s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--line-strong);
}

.card__icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: color-mix(in srgb, var(--c, var(--brand-500)) 12%, #fff);
  color: var(--c, var(--brand-500));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--c, var(--brand-500)) 20%, transparent);
  transition: transform 0.28s var(--ease);
}

.card:hover .card__icon { transform: translateY(-2px) scale(1.04); }

.card__icon svg { width: 22px; height: 22px; }

.card h3 { margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-soft); }

.card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-soft);
}

.tag--brand { background: var(--brand-050); color: var(--brand-600); }
.tag--accent { background: var(--accent-050); color: var(--accent-600); }
.tag--onink {
  background: #fff;
  color: var(--text-soft);
  border: 1px solid var(--line);
}

/* 产品线卡（左侧色条 + 花卉色识别） */
.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.product-card__top {
  position: relative;
  padding: 24px 26px 20px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(160deg, color-mix(in srgb, var(--c) 7%, #fff), #fff 70%);
}

.product-card__bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c);
}

.product-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.product-card__badge {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: var(--c);
  color: #fff;
  box-shadow: 0 10px 22px color-mix(in srgb, var(--c) 34%, transparent);
}

.product-card__badge svg { width: 22px; height: 22px; }

.product-card__alias {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--c);
}

.product-card__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.product-card__body {
  padding: 20px 26px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card__body p {
  font-size: 14px;
  color: var(--text-soft);
  flex: 1;
}

.product-card__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-mute);
}

.product-card__price b {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 800;
  color: var(--ink-900);
}

.product-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

/* ----------------------------- 9. 全链路流程 ----------------------------- */
.chain {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  counter-reset: chain;
}

.chain__item {
  position: relative;
  padding: 28px 24px 24px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
}

.chain__item::after {
  content: "";
  position: absolute;
  top: 52px;
  right: -14px;
  width: 20px;
  height: 1.5px;
  background: var(--line-strong);
}

.chain__item:last-child::after { display: none; }

.chain__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 15px;
  color: #fff;
  background: var(--c, var(--brand-500));
}

.chain__item h3 { font-size: 17px; margin-bottom: 8px; }
.chain__item p { font-size: 14px; color: var(--text-soft); }

.chain__tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--c, var(--brand-600));
}

/* ----------------------------- 10. 亮点/优势条 ----------------------------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.metric {
  padding: 30px 26px;
  background: #fff;
}

.metric b {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 2.6vw, 36px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--ink-900);
}

.metric b em {
  font-style: normal;
  font-size: 0.55em;
  margin-left: 2px;
  color: var(--brand-600);
}

.metric > span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-mute);
}

/* ----------------------------- 11. 套餐表 ----------------------------- */
/* Tab 容器：safe center = 空间富余时居中，溢出时自动退化为 start（保证能滚到最左） */
.tabs-wrap {
  display: flex;
  justify-content: safe center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs-wrap::-webkit-scrollbar { display: none; }

.tabs {
  display: inline-flex;
  flex-wrap: nowrap;
  width: max-content;
  gap: 6px;
  padding: 6px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  margin-bottom: 32px;
}

.tabs__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-soft);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.tabs__btn i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c, var(--brand-500));
}

.tabs__btn:hover { color: var(--ink-900); }

.tabs__btn.is-active {
  background: #fff;
  color: var(--ink-900);
  box-shadow: var(--shadow-xs);
}

.plan-panel { display: none; }
.plan-panel.is-active { display: block; animation: fadeUp 0.36s var(--ease) both; }

.plan-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding: 22px 26px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: linear-gradient(120deg, color-mix(in srgb, var(--c) 10%, #fff), #fff);
  border: 1px solid var(--line);
  border-bottom: 0;
}

.plan-head__badge {
  width: 48px;
  height: 48px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: var(--c);
  color: #fff;
}

.plan-head__badge svg { width: 24px; height: 24px; }
.plan-head h3 { font-size: 20px; }
.plan-head p { font-size: 13.5px; color: var(--text-mute); }

.plan-tiers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
  background: var(--line);
}

.tier {
  padding: 26px 24px;
  background: #fff;
}

.tier--hot {
  background: linear-gradient(180deg, color-mix(in srgb, var(--c) 8%, #fff), #fff);
}

.tier__name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}

.tier__badge {
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
  background: var(--c);
  color: #fff;
}

.tier__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 14px 0 6px;
}

.tier__price b {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: var(--ink-900);
}

.tier__price span { font-size: 13px; color: var(--text-mute); }
.tier__note { font-size: 12.5px; color: var(--brand-600); min-height: 19px; }

.tier__divider {
  height: 1px;
  margin: 18px 0;
  background: var(--line);
}

.spec-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-soft);
  padding: 5px 0;
}

.spec-list svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--success);
}

.spec-list--detailed li {
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px dashed var(--surface-2);
  padding: 7px 0;
}

.spec-list--detailed li:last-child { border-bottom: 0; }
.spec-list--detailed li b { font-weight: 600; color: var(--ink-800); }

.tier .btn { margin-top: 22px; }

/* 对比表 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
  font-size: 14px;
}

table.compare th,
table.compare td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

table.compare thead th {
  position: sticky;
  top: 0;
  background: var(--surface);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-800);
  white-space: nowrap;
}

table.compare tbody tr:last-child td { border-bottom: 0; }
table.compare tbody tr:hover td { background: var(--brand-050); }
table.compare td:first-child { font-weight: 600; color: var(--ink-800); }
table.compare .ok { color: var(--success); font-weight: 700; }

/* ----------------------------- 12. 步骤 / 时间轴 ----------------------------- */
.steps { position: relative; padding-left: 0; }

.steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding-bottom: 34px;
}

.steps__item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--line-strong), transparent);
}

.steps__num {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 800;
  color: var(--brand-600);
  box-shadow: var(--shadow-xs);
}

.steps__body h3 { margin-bottom: 8px; }
.steps__body p { font-size: 14.5px; color: var(--text-soft); max-width: 640px; }

/* ----------------------------- 13. 伙伴 / 行业 ----------------------------- */
.logo-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.logo-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 20px;
  border-radius: var(--radius-pill);
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-800);
  box-shadow: var(--shadow-xs);
}

.logo-chip i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c, var(--brand-500));
}

.section--ink .logo-chip {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-800);
  box-shadow: var(--shadow-xs);
}

/* ----------------------------- 14. 行动号召条（深空极光，呼应 AI 视觉层） ----------------------------- */
.cta-band {
  position: relative;
  padding: 72px 0;
  background: radial-gradient(120% 140% at 20% 0%, #14294d 0%, #0a1730 48%, var(--void-900) 100%);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -70%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.38), transparent 64%);
  filter: blur(40px);
  z-index: -1;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(122, 178, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 178, 255, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 20%, transparent 74%);
}

.cta-band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-band h2 { color: #fff; margin-bottom: 10px; }
.cta-band p { color: #a2b6d2; max-width: 560px; }

/* 深色区块里的反白按钮 */
.cta-band .btn--onink {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(140, 185, 255, 0.3);
  color: #fff;
  backdrop-filter: blur(8px);
}

.cta-band .btn--onink:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(140, 185, 255, 0.55);
}

/* ----------------------------- 15. 页脚（对齐原站浅色页脚） ----------------------------- */
.footer {
  background: linear-gradient(180deg, #f7f9fc, #eef2f8);
  border-top: 1px solid var(--line);
  color: var(--text-soft);
  padding: 72px 0 0;
  font-size: 14px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line-strong);
}

.footer .brand__name { color: var(--ink-900); }
.footer .brand__sub { color: var(--text-mute); }

.footer__desc {
  margin-top: 18px;
  max-width: 330px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

.footer h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 18px;
}

.footer__links li { margin-bottom: 11px; }
.footer__links a { font-size: 13.5px; color: var(--text-soft); }
.footer__links a:hover { color: var(--brand-500); }

.footer__contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 13px;
  font-size: 13.5px;
  line-height: 1.65;
}

.footer__contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--brand-500);
}

.footer__contact b { color: var(--ink-800); font-weight: 600; }

.footer__qr {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  padding: 14px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
}

.footer__qr-box {
  width: 120px;
  height: 120px;
  border-radius: 10px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-700);
}

.footer__qr-box svg { width: 44px; height: 44px; }

.footer__qr-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: inherit;
  display: block;
}

.footer__qr-text b {
  display: block;
  font-size: 13px;
  color: var(--ink-900);
}

.footer__qr-text span { font-size: 12px; color: var(--text-mute); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 28px;
  font-size: 12.5px;
  color: var(--text-mute);
}

.footer__bottom a:hover { color: var(--brand-500); }

/* ----------------------------- 16. 表单 ----------------------------- */
.form-card {
  padding: 34px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-800);
}

.field label em {
  font-style: normal;
  color: var(--brand-600);
  margin-left: 3px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.field textarea { min-height: 104px; resize: vertical; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 4px var(--brand-050);
}

.field .err {
  display: none;
  margin-top: 7px;
  font-size: 12.5px;
  color: var(--brand-600);
}

.field.is-invalid input,
.field.is-invalid select {
  border-color: var(--brand-500);
}

.field.is-invalid .err { display: block; }

.form-note {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--text-mute);
  line-height: 1.7;
}

/* 提示条 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: var(--radius-pill);
  background: var(--ink-900);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}

.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast svg { width: 17px; height: 17px; color: var(--success); }

/* ----------------------------- 17. 其他组件 ----------------------------- */
.accordion__item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
}

.accordion__item.is-open {
  border-color: var(--brand-200);
  box-shadow: var(--shadow-sm);
}

.accordion__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 19px 22px;
  text-align: left;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink-900);
}

.accordion__q svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--brand-500);
  transition: transform 0.26s var(--ease);
}

.accordion__item.is-open .accordion__q svg { transform: rotate(45deg); }

.accordion__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s var(--ease);
}

.accordion__item.is-open .accordion__a { grid-template-rows: 1fr; }

.accordion__a > div {
  overflow: hidden;
  padding: 0 22px;
}

.accordion__item.is-open .accordion__a > div {
  padding-bottom: 20px;
}

.accordion__a p { font-size: 14.5px; color: var(--text-soft); }

/* 引言 */
.quote {
  padding: 30px 32px;
  border-left: 4px solid var(--brand-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--brand-050);
}

.quote p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-800);
}

.quote cite {
  display: block;
  margin-top: 14px;
  font-style: normal;
  font-size: 13.5px;
  color: var(--text-mute);
}

/* 课程卡 */
.course {
  display: flex;
  gap: 20px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.course:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

.course__thumb {
  width: 132px;
  height: 96px;
  flex-shrink: 0;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(140deg, var(--c, var(--brand-500)), var(--ink-700));
}

.course__thumb svg { width: 32px; height: 32px; opacity: 0.92; }

.course__body h3 { font-size: 16.5px; margin-bottom: 8px; }
.course__body p { font-size: 13.5px; color: var(--text-soft); }

.course__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--text-mute);
}

.course__meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.course__meta svg { width: 14px; height: 14px; }

/* 登录入口卡 */
.login-card {
  display: flex;
  flex-direction: column;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease),
    border-color 0.26s var(--ease);
}

.login-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--c, var(--brand-500));
}

.login-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: color-mix(in srgb, var(--c, var(--brand-500)) 12%, #fff);
  color: var(--c, var(--brand-500));
}

.login-card__icon svg { width: 25px; height: 25px; }
.login-card h3 { margin-bottom: 8px; }
.login-card p { font-size: 14px; color: var(--text-soft); flex: 1; }
.login-card .btn { margin-top: 22px; }

/* 提示条幅 */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--brand-050);
  border: 1px solid var(--brand-200);
  font-size: 14px;
  color: var(--ink-800);
}

.notice svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--brand-600);
}

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand-500);
  box-shadow: 0 8px 20px rgba(26, 115, 232, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.to-top.is-show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); }
.to-top svg { width: 18px; height: 18px; }

/* 右侧悬浮咨询条（对齐原站） */
.side-contact {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 88;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.side-contact__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px 11px 12px;
  border-radius: 10px 0 0 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-right: 0;
  box-shadow: -4px 6px 18px rgba(31, 45, 61, 0.08);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
  max-width: 46px;
  overflow: hidden;
  white-space: nowrap;
  transition: max-width 0.28s var(--ease), background-color 0.2s var(--ease),
    color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.side-contact__item span {
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.side-contact__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--brand-500);
  transition: color 0.2s var(--ease);
}

.side-contact__item:hover {
  max-width: 190px;
  background: var(--brand-500);
  border-color: var(--brand-500);
  color: #fff;
}

.side-contact__item:hover span { opacity: 1; }
.side-contact__item:hover svg { color: #fff; }

.side-contact__item--qr { position: relative; cursor: pointer; overflow: visible; }

.side-contact__qr {
  position: absolute;
  right: calc(100% + 14px);
  bottom: 0;
  width: 180px;
  height: 180px;
  max-width: none; /* 豁免全局 img max-width:100%，窄条目下会把弹图压到 45px */
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(7, 18, 35, 0.18);
  display: block;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  pointer-events: none;
}

.side-contact__item--qr:hover .side-contact__qr,
.side-contact__item--qr:focus-visible .side-contact__qr,
.side-contact__item--qr.is-open .side-contact__qr {
  opacity: 1;
  transform: none;
}

.side-contact__item--qr:hover { background: var(--accent-500); border-color: var(--accent-500); }

/* 表单：隐私勾选 + 蜜罐防垃圾 */
/* 特异性需高于 .field label 的 display:block, 保证勾选框与文字同行排布 */
.field label.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-600);
  cursor: pointer;
}

/* 特异性需高于 .field input 的 width:100%, 防止勾选框被拉成全宽 */
input.form-check__input {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  accent-color: var(--brand-500);
  cursor: pointer;
}

.form-check span { line-height: 1.7; }

.form-check a { color: var(--brand-500); text-decoration: underline; }

.hp-wrap {
  position: absolute;
  left: -9999px;
  top: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* 移动端底部咨询条 */
.mobile-bar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 95;
  display: none;
  gap: 10px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
}

.mobile-bar .btn { flex: 1; }

/* 移动端表格横向滚动提示 */
.scroll-hint {
  display: none;
  align-items: center;
  gap: 7px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--text-mute);
}

.scroll-hint svg { width: 15px; height: 15px; color: var(--brand-500); }

/* ----------------------------- 18. 动效 ----------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.is-in { opacity: 1; transform: none; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* AI 视觉层动效 */
@keyframes auroraDrift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  33% { transform: translate3d(6%, -5%, 0) scale(1.12); }
  66% { transform: translate3d(-5%, 4%, 0) scale(0.94); }
}

@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.82); }
}

@keyframes sheen {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

@keyframes spinSlow {
  to { transform: rotate(360deg); }
}

/* AI 能力标签 */
.chip-ai {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px 4px 8px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--grad-ai);
  background-size: 180% 100%;
  box-shadow: 0 6px 16px rgba(26, 115, 232, 0.26);
}

.chip-ai svg { width: 13px; height: 13px; }

/* 深色 AI 区块 */
.section--void {
  position: relative;
  background: radial-gradient(120% 130% at 85% 0%, #14294d 0%, #0a1730 46%, var(--void-900) 100%);
  color: #b9cbe4;
  overflow: hidden;
  isolation: isolate;
}

.section--void .h1,
.section--void .h2,
.section--void .h3,
.section--void .h4 { color: #fff; }

.section--void .lead { color: #a2b6d2; }

.section--void__aurora {
  position: absolute;
  inset: -20% -10%;
  z-index: -2;
  filter: blur(72px);
  opacity: 0.5;
  pointer-events: none;
}

.section--void__aurora i {
  position: absolute;
  display: block;
  border-radius: 50%;
  mix-blend-mode: screen;
}

.section--void__aurora i:nth-child(1) {
  top: -10%;
  left: 4%;
  width: 42%;
  height: 70%;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.8), transparent 68%);
  animation: auroraDrift 24s ease-in-out infinite;
}

.section--void__aurora i:nth-child(2) {
  bottom: -22%;
  right: 2%;
  width: 44%;
  height: 72%;
  background: radial-gradient(circle, rgba(233, 30, 99, 0.46), transparent 68%);
  animation: auroraDrift 28s ease-in-out infinite reverse;
}

.section--void__aurora i:nth-child(3) {
  top: 10%;
  right: 26%;
  width: 34%;
  height: 56%;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.5), transparent 70%);
  animation: auroraDrift 32s ease-in-out infinite;
}

.section--void .card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(140, 185, 255, 0.16);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

.section--void .card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(140, 185, 255, 0.34);
  box-shadow: 0 18px 40px rgba(3, 10, 25, 0.45);
}

.section--void .card h3,
.section--void .card .h4 { color: #fff; }
.section--void .card p { color: #9fb4d2; }
.section--void .card__icon { background: rgba(255, 255, 255, 0.08); }

.section--void .eyebrow { color: #6aa8ff; }

/* 深色区里的规格列表 */
.section--void .spec-list li { color: #b9cbe4; }
.section--void .spec-list svg { color: #4cd4a0; }

/* 卡片：hover 渐变描边 + 光晕 */
.card {
  position: relative;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-ai);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.card:hover::after { opacity: 0.55; }

.section--void .card::after { opacity: 0.14; }
.section--void .card:hover::after { opacity: 0.6; }

/* 区块标题的 AI 渐变小标 */
.section-head--center .eyebrow::before { background: var(--grad-ai); opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__aurora i,
  .section--void__aurora i,
  .grad-ai,
  .hero__badge b::before,
  .hero__panel::before { animation: none !important; }
  * { animation-duration: 0.001ms !important; }
}

/* -------------------- 18.5 产品轮播图 + 灯箱 -------------------- */
.plan-gallery { margin: 22px 0 26px; }

.plan-gallery__stage {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.plan-gallery__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: zoom-in;
}

.plan-gallery__zoom {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(7, 18, 35, 0.5);
  color: #fff;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.plan-gallery__zoom:hover { background: var(--brand-500); transform: scale(1.06); }
.plan-gallery__zoom svg { width: 20px; height: 20px; }

.plan-gallery__thumbs {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.plan-gallery__thumb {
  flex: 1 1 0;
  min-width: 0;
  height: 64px;
  padding: 0;
  border: 2px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  cursor: pointer;
  opacity: 0.6;
  transition: border-color 0.2s var(--ease), opacity 0.2s var(--ease);
}
.plan-gallery__thumb:hover { opacity: 1; }
.plan-gallery__thumb.is-active { border-color: var(--c, var(--brand-500)); opacity: 1; }
.plan-gallery__thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(7, 18, 35, 0.9);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s var(--ease);
}
.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox__img {
  max-width: min(90vw, 1200px);
  max-height: 82vh;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: background 0.2s var(--ease);
}
.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover { background: rgba(255, 255, 255, 0.24); }
.lightbox__close svg,
.lightbox__prev svg,
.lightbox__next svg { width: 22px; height: 22px; }

.lightbox__close { top: 20px; right: 20px; }
.lightbox__prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 18px; top: 50%; transform: translateY(-50%); }

.lightbox__counter {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  letter-spacing: 0.05em;
}

/* ----------------------------- 19. 响应式 ----------------------------- */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 44px; }
  .hero__lead { max-width: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chain { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chain__item:nth-child(2)::after { display: none; }
}

@media (max-width: 900px) {
  .section { padding: 68px 0; }
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .drawer { display: block; top: calc(var(--header-h) + env(safe-area-inset-top, 0px)); }
  .header__actions .btn { display: none; }
  .plan-tiers { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 48px); }
  .hero__stats { gap: 26px; }
  .side-contact { display: none; }
  .to-top { right: 16px; }
}

@media (max-width: 680px) {
  .container { padding: 0 18px; }
  .section { padding: 54px 0; }
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr; }
  .chain__item::after { display: none !important; }
  .hero__panel-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .footer { padding: 56px 0 0; }
  .footer__bottom { padding-bottom: 96px; }
  .mobile-bar { display: flex; }
  .to-top { bottom: 84px; }
  .form-card { padding: 24px 20px; }
  .card { padding: 22px 20px; }
  .product-card { padding: 0; }
  .course { flex-direction: column; }
  .course__thumb { width: 100%; height: 130px; }
  .quote { padding: 24px 22px; }
  .btn-row .btn { flex: 1 1 auto; }

  /* 移动端字号与间距收敛 */
  .display { font-size: clamp(27px, 8vw, 34px); }
  .h2 { font-size: clamp(21px, 5.6vw, 26px); }
  .lead { font-size: 15px; }
  .section-head { margin-bottom: 34px; }

  /* 手机端 tabs: 自动换行全部露出, 无需横向拖动 */
  .tabs-wrap {
    justify-content: center !important;
    overflow-x: visible;
    margin: 0 0 26px;
    padding: 0;
  }
  .tabs-wrap::-webkit-scrollbar { display: none; }
  .tabs {
    display: grid;
    grid-template-columns: repeat(2, auto);
    justify-content: center;
    column-gap: 6px;
    row-gap: 6px;
    margin-bottom: 0;
    width: 100%;
    border-radius: var(--radius);
  }
  .tabs__btn { white-space: nowrap; padding: 9px 15px; }
  /* 移动端选中态强化: 彩色描边, 避免"当前在哪个产品"不清晰 */
  .tabs__btn.is-active { box-shadow: 0 0 0 1.5px var(--c, var(--brand-500)), var(--shadow-xs); }

  /* 页脚联系信息与二维码改为紧凑布局 */
  .footer__qr { padding: 12px; }

  /* 对比表：横向滚动提示 */
  .scroll-hint { display: flex; }
  .table-wrap { position: relative; }
  table.compare th,
  table.compare td { padding: 12px 14px; }
  table.compare thead th:first-child,
  table.compare td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    background: #fff;
    box-shadow: 1px 0 0 var(--line);
  }
  table.compare thead th:first-child { background: var(--surface); }

  /* 套餐卡与规格表在窄屏下允许换行 */
  .spec-list--detailed li { flex-wrap: wrap; gap: 2px 12px; }
  .plan-head { padding: 18px 20px; }
  .plan-head h3 { font-size: 18px; }
  .tier { padding: 22px 20px; }
  .tier__price b { font-size: 26px; }
  .login-card { padding: 24px 20px; }
  .notice { padding: 14px 16px; font-size: 13.5px; }
  .hero__badge { font-size: 12px; }
  .hero__flow span { padding: 7px 13px; font-size: 13px; }
  .hero__stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .hero__stat b { font-size: 24px; }
  .hero__panel { padding: 16px; border-radius: var(--radius-lg); }
  .hero {
    padding: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 36px) 0 60px;
  }
  .hero__aurora { inset: -12% -30%; opacity: 0.5; filter: blur(52px); }
  .hero h1 { text-shadow: none; }
  .cta-band { padding: 54px 0; }
  .section--void .card { backdrop-filter: none; }
}

@media (max-width: 420px) {
  .hero__stat b { font-size: 22px; }
  .brand__sub { display: none; }
  .btn--lg { height: 50px; padding: 0 22px; }
}

/* 触屏设备：去掉点击高亮、保证点击区足够 */
@media (hover: none) {
  a, button { -webkit-tap-highlight-color: transparent; }
  .drawer a { padding: 14px 4px; }
  .tabs__btn { min-height: 40px; }
}

/* 打印 */
@media print {
  .header, .mobile-bar, .to-top, .side-contact, .cta-band, .footer { display: none; }
  body { color: #000; }
}