/* =====================================================
   QuakoWork - AI 智能助手官网样式
   技术栈: 纯CSS3 + CSS变量 + CSS动画
   风格: 深色科技风 + 赛博朋克 / 支持浅色模式
   ===================================================== */

/* =====================================================
   0. 本地字体定义
   ===================================================== */
@font-face {
  font-family: 'Orbitron';
  src: url('../fonts/Orbitron-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Orbitron';
  src: url('../fonts/Orbitron-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Orbitron';
  src: url('../fonts/Orbitron-Black.ttf') format('truetype');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* =====================================================
   1. CSS变量 - 设计系统
   ===================================================== */

/* =====================================================
   设计系统（Light Premium · 单一奎可橙）
   - 浅色为默认主基调（:root），[data-theme="dark"] 为次要深色。
   - 全站只有一个强调色：奎可橙（--accent）。
   - 旧变量名（--primary-color / --brand-orange 等）作为「向后兼容别名」保留，
     统一折叠为单一强调色或中性色，避免逐行改动既有 3400 行用法。
   ===================================================== */

/* ---------- 字体族 ---------- */
:root {
  --font-sans: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'SFMono-Regular', 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  --font-brand: 'Orbitron', 'PingFang SC', sans-serif; /* 仅 QuakoWork 字标保留 */
}

/* ---------- 浅色模式（默认）---------- */
:root {
  /* 单一强调色：奎可橙 */
  --accent: #EA580C;
  --accent-hover: #C2410C;
  --accent-soft: rgba(234, 88, 12, 0.08);
  --accent-softer: rgba(234, 88, 12, 0.05);
  --accent-line: rgba(234, 88, 12, 0.22);

  /* 背景与表面 */
  --bg: #F4F5F7;            /* 高级质感冷调浅灰 */
  --bg-alt: #EDEEF1;        /* 分区底 */
  --surface: #FFFFFF;       /* 卡片 */
  --surface-2: #F7F6F2;     /* 卡片次级 / 表头 */
  --bg-gradient-start: var(--bg);
  --bg-gradient-end: var(--bg-alt);

  /* 文字（墨色阶）*/
  --ink: #1A1A1A;
  --ink-2: #555555;
  --ink-3: #8A8A8A;
  --ink-4: #B5B5B0;

  /* 边框 / 分隔 */
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);

  /* 阴影：中性深度，去掉彩色发光 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06), 0 10px 30px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.09);
  --shadow-glow-primary: var(--shadow-md);
  --shadow-glow-orange: var(--shadow-md);

  /* 导航 / 网格 / 二维码 / 模态 / 按钮 / 表格 */
  --navbar-bg: linear-gradient(180deg, rgba(244, 245, 247, 0.92) 0%, rgba(244, 245, 247, 0.72) 100%);
  --navbar-blur: saturate(180%) blur(14px);
  --grid-color: rgba(234, 88, 12, 0.035);
  --qr-bg: #ffffff;
  --qr-shadow: var(--shadow-md);
  --modal-bg: #ffffff;
  --modal-overlay: rgba(20, 20, 20, 0.45);
  --table-header-bg: var(--surface-2);
  --table-row-hover: var(--accent-soft);
  --btn-ghost-bg: var(--accent-soft);
  --btn-ghost-border: var(--accent);
  --btn-ghost-text: var(--accent);

  /* 粒子（浅色下基本闲置，保留中性色）*/
  --particle-color-1: rgba(234, 88, 12, 0.5);
  --particle-color-2: rgba(120, 120, 130, 0.4);
  --particle-color-3: rgba(234, 88, 12, 0.35);
  --particle-color-4: rgba(120, 120, 130, 0.3);

  /* —— 向后兼容别名（把旧多色折叠为单一橙 / 中性）—— */
  --primary-color: var(--accent);
  --primary-hover: var(--accent-hover);
  --secondary-color: var(--accent);
  --accent-color: var(--accent);
  --brand-orange: var(--accent);
  --brand-red: var(--accent-hover);
  --brand-gold: var(--accent);
  --bg-primary: var(--bg);
  --bg-secondary: var(--bg-alt);
  --bg-card: var(--surface);
  --bg-card-hover: var(--surface-2);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-muted: var(--ink-3);
  --text-hint: var(--ink-4);
  --border-color: var(--line);
  --border-glow: var(--accent-line);
  --border-light: var(--line);
}

/* ---------- 深色模式（次要，主题切换可用）---------- */
[data-theme="dark"] {
  --accent: #F97316;
  --accent-hover: #FB923C;
  --accent-soft: rgba(249, 115, 22, 0.12);
  --accent-softer: rgba(249, 115, 22, 0.07);
  --accent-line: rgba(249, 115, 22, 0.3);

  --bg: #0F0F12;
  --bg-alt: #16161A;
  --surface: #1B1B21;
  --surface-2: #232329;
  --bg-gradient-start: var(--bg);
  --bg-gradient-end: var(--bg-alt);

  --ink: #F5F5F4;
  --ink-2: rgba(245, 245, 244, 0.72);
  --ink-3: rgba(245, 245, 244, 0.5);
  --ink-4: rgba(245, 245, 244, 0.35);

  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.36);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow-primary: var(--shadow-md);
  --shadow-glow-orange: var(--shadow-md);

  --navbar-bg: linear-gradient(180deg, rgba(15, 15, 18, 0.92) 0%, rgba(15, 15, 18, 0.72) 100%);
  --navbar-blur: saturate(180%) blur(14px);
  --grid-color: rgba(249, 115, 22, 0.05);
  --qr-bg: #ffffff;
  --qr-shadow: var(--shadow-lg);
  --modal-bg: #1B1B21;
  --modal-overlay: rgba(0, 0, 0, 0.6);
  --table-header-bg: var(--surface-2);
  --table-row-hover: var(--accent-soft);
  --btn-ghost-bg: var(--accent-soft);
  --btn-ghost-border: var(--accent);
  --btn-ghost-text: var(--accent);

  --particle-color-1: rgba(249, 115, 22, 0.5);
  --particle-color-2: rgba(180, 180, 190, 0.3);
  --particle-color-3: rgba(249, 115, 22, 0.35);
  --particle-color-4: rgba(180, 180, 190, 0.25);

  /* 别名随主题更新 */
  --primary-color: var(--accent);
  --primary-hover: var(--accent-hover);
  --secondary-color: var(--accent);
  --accent-color: var(--accent);
  --brand-orange: var(--accent);
  --brand-red: var(--accent-hover);
  --brand-gold: var(--accent);
  --bg-primary: var(--bg);
  --bg-secondary: var(--bg-alt);
  --bg-card: var(--surface);
  --bg-card-hover: var(--surface-2);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-muted: var(--ink-3);
  --text-hint: var(--ink-4);
  --border-color: var(--line);
  --border-glow: var(--accent-line);
  --border-light: var(--line);
}

/* ---------- 全局尺度 token（过渡 / 圆角 / 层级 / 间距 / 字号 / 容器）---------- */
:root {
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 450ms ease;
  --transition-theme: 350ms ease;

  /* 圆角 */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  /* z-index 层级 */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-fixed: 1000;
  --z-modal: 2000;
  --z-tooltip: 3000;

  /* 间距尺度（补齐缺失的 spacing scale）*/
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* 统一容器宽度（补齐，消除 700/900/1000/1100/1200 混用）*/
  --container: 1200px;
  --container-narrow: 760px;

  /* 字号尺度（补齐缺失的 type scale）*/
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --text-h3: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --text-h2: clamp(2rem, 1.4rem + 2.4vw, 2.75rem);
  --text-display: clamp(2.75rem, 1.6rem + 5vw, 4.75rem);
}

/* =====================================================
   2. 基础重置
   ===================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* 响应式根字体 - 适应DPI缩放 */
  font-size: clamp(14px, 1.25vw, 16px);
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  overflow-y: auto;
  line-height: 1.6;
  min-width: 320px;
  transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* 尊重用户减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* =====================================================
   3. 导航栏
   ===================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 15px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: var(--z-fixed);
  background: var(--navbar-bg);
  backdrop-filter: var(--navbar-blur);
  -webkit-backdrop-filter: var(--navbar-blur);
  transition: background var(--transition-theme);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo-icon {
  width: 45px;
  height: 45px;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 0 20px rgba(234, 88, 12, 0.4);
  animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(234, 88, 12, 0.4); }
  50% { box-shadow: 0 0 35px rgba(234, 88, 12, 0.7), 0 0 50px rgba(30, 30, 35, 0.3); }
}

.logo-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 26px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* 主题切换按钮 */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--btn-ghost-bg);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-normal);
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: #fff;
  transform: rotate(15deg);
  box-shadow: var(--shadow-glow-orange);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
}

.theme-toggle:hover svg {
  transform: scale(1.1);
}

/* 亮色模式图标隐藏/显示 */
.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* 汉堡菜单 - 移动端 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  z-index: var(--z-fixed);
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  z-index: calc(var(--z-fixed) - 1);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu .btn {
  width: 200px;
  justify-content: center;
  padding: 15px 30px;
  font-size: 16px;
}

/* =====================================================
   4. 按钮样式
   ===================================================== */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.btn-manual {
  background: rgba(234, 88, 12, 0.15);
  border: 2px solid var(--brand-orange);
  color: var(--brand-orange);
}

.btn-manual:hover,
.btn-manual:focus {
  background: var(--brand-orange);
  color: var(--text-primary);
  box-shadow: 0 0 30px rgba(234, 88, 12, 0.5);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover,
.btn-outline:focus {
  background: var(--primary-color);
  color: var(--bg-dark);
  box-shadow: 0 0 30px rgba(30, 30, 35, 0.5);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-primary);
  border: none;
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(123, 47, 255, 0.4);
}

.btn-gold {
  background: var(--brand-gold);
  border: 2px solid var(--brand-gold);
  color: #1a1305;
}

.btn-gold:hover,
.btn-gold:focus {
  transform: translateY(-2px);
  background: #bd902f;
  border-color: #bd902f;
  color: #1a1305;
  box-shadow: 0 10px 40px rgba(212, 168, 67, 0.45);
}

/* =====================================================
   5. Hero Section - 第一屏
   ===================================================== */
.hero-section {
  min-height: 100vh;
  min-height: clamp(600px, 100vh, auto);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: visible;
  padding: clamp(90px, 12vh, 120px) 20px clamp(40px, 5vh, 60px);
}

/* 动态背景 */
.bg-animation {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
}

.bg-animation::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 80%, rgba(234, 88, 12, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(30, 30, 35, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(123, 47, 255, 0.1) 0%, transparent 40%);
  animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(2%, 2%) rotate(1deg); }
  50% { transform: translate(-1%, 3%) rotate(-1deg); }
  75% { transform: translate(3%, -2%) rotate(2deg); }
}

/* 网格背景 */
.grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(30, 30, 35, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 30, 35, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: -1;
}

/* 粒子效果 */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: float 15s infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100vh) scale(1); opacity: 0; }
}

/* Hero Logo */
.hero-logo-container {
  position: relative;
  margin-bottom: 30px;
}

.hero-logo {
  width: 150px;
  height: 150px;
  border-radius: 30px;
  object-fit: contain;
  animation: heroLogoFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 0 30px rgba(234, 88, 12, 0.5));
}

@keyframes heroLogoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.hero-logo-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  border: 2px solid rgba(234, 88, 12, 0.3);
  border-radius: 50%;
  animation: ringPulse 3s ease-in-out infinite;
}

@keyframes ringPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0; }
}

/* 主标题 */
.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(50px, 10vw, 120px);
  font-weight: 900;
  text-align: center;
  position: relative;
  margin-bottom: 20px;
}

.hero-title span {
  background: linear-gradient(135deg, #fff 0%, var(--primary-color) 30%, var(--brand-orange) 70%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
  0%, 100% { filter: drop-shadow(0 0 20px rgba(30, 30, 35, 0.5)); }
  50% { filter: drop-shadow(0 0 40px rgba(234, 88, 12, 0.8)); }
}

/* 标题下方两组翻页式轮播：产品定位 ↔ 品牌 slogan */
.hero-carousel {
  overflow: hidden;              /* 裁掉横向滑出的轨道 */
  position: relative;
  max-width: 880px;              /* 收窄，减小横向滑动范围（可按效果再调） */
  margin: 0 auto 36px;           /* 水平居中 + 与下方按钮间距 */
}

.hero-carousel-track {
  display: flex;
  width: 400%;                   /* 4 张幻灯片（2 组 + 各一份副本）单向无缝循环 */
  animation: heroCarouselSlide 10s ease-in-out infinite;
}

.hero-slide {
  width: 25%;                    /* 每张 = 容器宽度（轨道共 4 张） */
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* 第2组 slogan 文字（纯色，不用 background-clip:text） */
.hero-slide--slogan .slogan-cn {
  margin: 0;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--brand-gold);
}

.hero-slide--slogan .slogan-en {
  margin: 10px 0 0;
  font-size: clamp(14px, 2vw, 18px);
  font-weight: 600;
  letter-spacing: 0.5px;
  color: rgba(255, 255, 255, 0.82);
}

/* 向左滑的单向无缝循环：停留第1组(经 A') → 向左滑入第2组 → 停留 → 向左滑入第1组 → 无缝回到 -50%；10s 一轮 */
@keyframes heroCarouselSlide {
  0%, 40%   { transform: translateX(-50%); }    /* 停留：第1组（由副本 A' 呈现） */
  50%, 90%  { transform: translateX(-25%); }    /* 停留：第2组 */
  100%      { transform: translateX(0); }       /* 推进到第1组 → 无缝回到 -50%（A=A'） */
}

@media (prefers-reduced-motion: reduce) {
  .hero-carousel-track { animation: none; transform: none; }   /* 静态显示第1组 */
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 22px);
  color: var(--text-secondary);
  margin-bottom: 15px;
  letter-spacing: 2px;
  text-align: center;
}

.hero-tagline {
  font-size: clamp(16px, 2.5vw, 18px);
  color: var(--brand-orange);
  margin-bottom: 40px;
  font-weight: 600;
  letter-spacing: 1px;
  text-align: center;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 公司信息 */
.company-info {
  position: absolute;
  bottom: 20px;
  right: 30px;
  font-size: 12px;
  color: var(--text-hint);
  letter-spacing: 1px;
}

/* Hero 底部功能卡片 */
.hero-features {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(8px, 1rem, 1rem);
  padding: 0 clamp(10px, 2vw, 20px);
  max-width: min(1200px, 90vw);
  margin: clamp(20px, 3vw, 40px) auto clamp(30px, 4vw, 50px);
  width: 100%;
}

.hero-features .feature-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  text-align: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
}

.hero-features .feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--brand-orange);
  box-shadow: 0 15px 40px rgba(234, 88, 12, 0.15);
}

.hero-features .feature-card:hover::before {
  opacity: 1;
}

.hero-features .feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-orange), var(--primary-color));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.hero-features .feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.15), rgba(0, 184, 212, 0.15));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.hero-features .feature-card:hover .feature-icon {
  transform: scale(1.1);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.25), rgba(0, 184, 212, 0.25));
}

.hero-features .feature-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.hero-features .feature-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .hero-features {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 0 15px;
    margin: 30px auto 0;
  }

  .hero-features .feature-card {
    padding: 18px 12px;
  }

  .hero-features .feature-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 8px;
  }

  .hero-features .feature-title {
    font-size: 12px;
  }

  .hero-features .feature-desc {
    font-size: 10px;
  }
}

/* =====================================================
   6. 功能特色条 - Features Strip (QClaw Style)
   ===================================================== */
.features-strip {
  padding: 60px 50px;
  background: linear-gradient(180deg, transparent, rgba(234, 88, 12, 0.02), transparent);
}

.features-strip-container {
  max-width: 1200px;
  margin: 0 auto;
}

.features-strip-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(24px, 4vw, 32px);
  text-align: center;
  margin-bottom: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.feature-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-orange), var(--primary-color));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--brand-orange);
  box-shadow: 0 20px 50px rgba(234, 88, 12, 0.15);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.15), rgba(0, 184, 212, 0.15));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.25), rgba(0, 184, 212, 0.25));
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* =====================================================
   7. 三步上手区域 - How It Works (QClaw Style)
   ===================================================== */
.how-it-works {
  padding: 80px 50px;
  background: linear-gradient(180deg, rgba(234, 88, 12, 0.02), transparent);
}

.how-it-works-container {
  max-width: 1000px;
  margin: 0 auto;
}

.how-it-works-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(24px, 4vw, 32px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.steps-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 20px;
}

.step-item {
  flex: 1;
  text-align: center;
  max-width: 280px;
  position: relative;
}

.step-number {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--brand-orange), var(--primary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Orbitron', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 8px 30px rgba(234, 88, 12, 0.3);
  position: relative;
  z-index: 2;
}

.step-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 步骤连接箭头 */
.step-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 28px;
  color: var(--brand-orange);
  font-size: 28px;
  opacity: 0.6;
}

.step-connector svg {
  width: 32px;
  height: 32px;
  stroke: var(--brand-orange);
  stroke-width: 2;
}

/* =====================================================
   8. 场景演示区域 - Demo Grid (QClaw Style)
   ===================================================== */
.demos-section {
  padding: 80px 50px;
  background: linear-gradient(180deg, transparent, rgba(234, 88, 12, 0.02), transparent);
}

.demos-container {
  max-width: 1100px;
  margin: 0 auto;
}

.demos-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(24px, 4vw, 32px);
  text-align: center;
  margin-bottom: 15px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.demos-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 50px;
}

.demos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.demo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-orange), var(--primary-color));
}

.demo-card:hover {
  transform: translateY(-5px);
  border-color: var(--brand-orange);
  box-shadow: 0 20px 50px rgba(234, 88, 12, 0.12);
}

.demo-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.demo-card-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.15), rgba(0, 184, 212, 0.15));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.demo-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.demo-card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* 聊天气泡演示 */
.chat-demo {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.5;
}

.chat-bubble.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-bubble.ai {
  align-self: flex-start;
  background: rgba(0, 184, 212, 0.1);
  border: 1px solid rgba(0, 184, 212, 0.2);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

/* 功能标签 */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 15px;
}

.feature-tag {
  padding: 6px 12px;
  background: rgba(234, 88, 12, 0.1);
  border: 1px solid rgba(234, 88, 12, 0.2);
  border-radius: 20px;
  font-size: 12px;
  color: var(--brand-orange);
}

/* =====================================================
   9. CTA区域 (QClaw Style)
   ===================================================== */
.cta-section {
  padding: 100px 50px;
  background: linear-gradient(180deg, transparent, rgba(234, 88, 12, 0.03), transparent);
  text-align: center;
}

.cta-container {
  max-width: 700px;
  margin: 0 auto;
}

.cta-card {
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.08), rgba(0, 184, 212, 0.05));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(234, 88, 12, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(28px, 4vw, 36px);
  margin-bottom: 15px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.cta-desc {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 35px;
  line-height: 1.7;
  position: relative;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
}

/* =====================================================
   10. 浮动光晕效果
   ===================================================== */
.floating-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--brand-orange);
  top: 10%;
  left: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 350px;
  height: 350px;
  background: var(--primary-color);
  top: 60%;
  right: -10%;
  animation-delay: -5s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: var(--secondary-color);
  bottom: 10%;
  left: 30%;
  animation-delay: -10s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, 30px) scale(1.1); }
  50% { transform: translate(-30px, 60px) scale(0.9); }
  75% { transform: translate(40px, -20px) scale(1.05); }
}

/* =====================================================
   11. 产品介绍区域 (原有 - 保留兼容)
   ===================================================== */
.intro-section {
  padding: 80px 50px;
  background: linear-gradient(180deg, transparent, rgba(234, 88, 12, 0.03), transparent);
}

.intro-container {
  max-width: 1100px;
  margin: 0 auto;
}

.intro-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(26px, 4vw, 36px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.intro-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.intro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-orange), var(--primary-color));
}

.intro-card:hover,
.intro-card:focus-within {
  transform: translateY(-8px);
  border-color: var(--brand-orange);
  box-shadow: 0 15px 40px rgba(234, 88, 12, 0.2);
}

.intro-card-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.2), rgba(30, 30, 35, 0.2));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 15px;
}

.intro-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.intro-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 卡片展开状态 */
.intro-card.expanded {
  grid-column: span 2;
  transform: none;
  border-color: var(--brand-orange);
  box-shadow: 0 20px 60px rgba(234, 88, 12, 0.15);
}

@media (max-width: 900px) {
  .intro-card.expanded {
    grid-column: span 1;
  }
}

.intro-card .card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.intro-card .expand-icon {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.intro-card.expanded .expand-icon {
  transform: rotate(180deg);
}

/* 展开内容区域 */
.intro-card .demo-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.3s ease;
  margin-top: 0;
}

.intro-card.expanded .demo-content {
  max-height: 500px;
  opacity: 1;
  margin-top: 25px;
}

/* 演示界面容器 */
.demo-interface {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

/* 演示头部 */
.demo-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 15px;
  background: var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.demo-dots {
  display: flex;
  gap: 6px;
}

.demo-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.demo-dots span:nth-child(1) { background: #ff5f57; }
.demo-dots span:nth-child(2) { background: #ffbd2e; }
.demo-dots span:nth-child(3) { background: #28ca41; }

.demo-title {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 10px;
}

/* 演示主体 */
.demo-body {
  padding: 20px;
  min-height: 200px;
}

/* 上传区域样式 */
.demo-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  transition: all var(--transition-normal);
}

.demo-upload-area:hover {
  border-color: var(--brand-orange);
  background: rgba(234, 88, 12, 0.05);
}

.demo-upload-icon {
  font-size: 36px;
  margin-bottom: 10px;
  opacity: 0.7;
}

.demo-upload-text {
  font-size: 13px;
  color: var(--text-muted);
}

.demo-upload-formats {
  font-size: 11px;
  color: var(--text-hint);
  margin-top: 8px;
}

/* 操作按钮组 */
.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.demo-action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--btn-ghost-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.demo-action-btn:hover {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: #fff;
  transform: translateY(-2px);
}

/* 进度条 */
.demo-progress {
  margin-top: 20px;
}

.demo-progress-bar {
  height: 6px;
  background: var(--border-light);
  border-radius: 3px;
  overflow: hidden;
}

.demo-progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--brand-orange), var(--primary-color));
  border-radius: 3px;
  animation: progressFill 2s ease-out forwards;
}

@keyframes progressFill {
  0% { width: 0; }
  100% { width: 100%; }
}

.demo-progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* 代码编辑器模拟 */
.demo-code-editor {
  background: #1e1e2e;
  border-radius: var(--radius-sm);
  padding: 15px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
}

.demo-code-line {
  display: flex;
  gap: 15px;
}

.demo-line-num {
  color: #6c7086;
  user-select: none;
  min-width: 20px;
  text-align: right;
}

.demo-code-content {
  color: #cdd6f4;
}

.demo-code-keyword { color: #cba6f7; }
.demo-code-string { color: #a6e3a1; }
.demo-code-comment { color: #6c7086; }
.demo-code-function { color: #89b4fa; }

/* 聊天气泡 */
.demo-chat {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.demo-chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.5;
  animation: bubbleIn 0.3s ease;
}

@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.demo-chat-bubble.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  color: #fff;
  border-bottom-right-radius: 4px;
}

.demo-chat-bubble.ai {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 4px;
}

.demo-typing {
  display: flex;
  gap: 4px;
  padding: 8px 0;
}

.demo-typing span {
  width: 6px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.demo-typing span:nth-child(2) { animation-delay: 0.2s; }
.demo-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

/* 数据可视化 */
.demo-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-top: 15px;
}

.demo-stat-item {
  text-align: center;
  padding: 15px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.demo-stat-value {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.demo-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
}

/* 热点列表 */
.demo-hot-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.demo-hot-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.demo-hot-item:hover {
  border-color: var(--brand-orange);
  transform: translateX(5px);
}

.demo-hot-rank {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.demo-hot-tag {
  flex: 1;
  font-size: 13px;
}

.demo-hot-heat {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--brand-orange);
}

/* 平台状态 */
.demo-platforms {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.demo-platform {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 15px 10px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.demo-platform.published {
  border-color: #28ca41;
}

.demo-platform-icon {
  font-size: 24px;
}

.demo-platform-status {
  font-size: 18px;
}

.demo-platform-name {
  font-size: 11px;
  color: var(--text-muted);
}

/* 图表区域 */
.demo-chart-area {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 120px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  margin-top: 15px;
}

.demo-chart-bar {
  width: 30px;
  background: linear-gradient(180deg, var(--brand-orange), var(--primary-color));
  border-radius: 4px 4px 0 0;
  animation: barGrow 1s ease-out forwards;
  transform-origin: bottom;
}

@keyframes barGrow {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

/* 图片处理流程 */
.demo-image-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
}

.demo-flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.demo-flow-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.demo-flow-label {
  font-size: 11px;
  color: var(--text-muted);
}

.demo-flow-arrow {
  color: var(--brand-orange);
  font-size: 20px;
  animation: arrowPulse 1s infinite;
}

@keyframes arrowPulse {
  0%, 100% { opacity: 0.5; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(3px); }
}

/* 处理步骤 */
.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.demo-step.completed {
  border-color: #28ca41;
}

.demo-step.processing {
  border-color: var(--brand-orange);
  animation: stepPulse 1.5s infinite;
}

@keyframes stepPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.3); }
  50% { box-shadow: 0 0 0 8px rgba(234, 88, 12, 0); }
}

.demo-step-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: var(--border-light);
}

.demo-step.completed .demo-step-icon {
  background: #28ca41;
  color: #fff;
}

.demo-step.processing .demo-step-icon {
  background: var(--brand-orange);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.demo-step-text {
  font-size: 13px;
  flex: 1;
}

/* 工具栏 */
.demo-toolbar, .demo-tool-btn {
  display: flex;
  gap: 8px;
}

.demo-toolbar {
  padding: 10px;
  background: var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: 15px;
}

.demo-tool-btn {
  padding: 8px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.demo-tool-btn:hover,
.demo-tool-btn.active {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--brand-orange);
}

/* 代码编辑器 */
.demo-code-editor {
  background: #1e1e2e;
  border-radius: var(--radius-sm);
  padding: 15px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.8;
}

.demo-code-line {
  display: flex;
  gap: 15px;
}

.demo-line-num {
  color: #6c7086;
  user-select: none;
  min-width: 20px;
  text-align: right;
}

.demo-code-content {
  color: #cdd6f4;
}

.demo-code-keyword { color: #cba6f7; }
.demo-code-string { color: #a6e3a1; }
.demo-code-comment { color: #6c7086; }
.demo-code-function { color: #89b4fa; }

/* 图片处理流程 */
.demo-image-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px;
}

.demo-flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.demo-flow-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.demo-flow-label {
  font-size: 11px;
  color: var(--text-muted);
}

.demo-flow-arrow {
  color: var(--brand-orange);
  font-size: 16px;
  animation: arrowPulse 1s infinite;
}

/* 热点列表 */
.demo-hot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo-hot-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.demo-hot-item:hover {
  border-color: var(--brand-orange);
  transform: translateX(3px);
}

.demo-hot-rank {
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

.demo-hot-tag {
  flex: 1;
  font-size: 12px;
}

.demo-hot-heat {
  font-size: 11px;
  color: var(--brand-orange);
}

/* 平台状态 */
.demo-platforms {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.demo-platform {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 8px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.demo-platform.published {
  border-color: #28ca41;
}

.demo-platform-icon {
  font-size: 18px;
}

.demo-platform-status {
  font-size: 14px;
}

.demo-platform-name {
  font-size: 10px;
  color: var(--text-muted);
}

/* 处理步骤 */
.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.demo-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.demo-step.completed {
  border-color: #28ca41;
}

.demo-step.processing {
  border-color: var(--brand-orange);
  animation: stepPulse 1.5s infinite;
}

.demo-step-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  background: var(--border-light);
}

.demo-step.completed .demo-step-icon {
  background: #28ca41;
  color: #fff;
}

.demo-step.processing .demo-step-icon {
  background: var(--brand-orange);
  animation: spin 1s linear infinite;
}

/* 数据统计 */
.demo-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 15px;
}

.demo-stat-item {
  text-align: center;
  padding: 12px 8px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.demo-stat-value {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.demo-stat-label {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 卡片头部样式 */
.intro-card .card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.intro-card .expand-icon {
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  opacity: 0.6;
}

.intro-card:hover .expand-icon {
  opacity: 1;
}

.intro-card.expanded .expand-icon {
  transform: rotate(180deg);
}

/* =====================================================
   7. 应用场景表格区域
   ===================================================== */
.scenarios-section {
  padding: 80px 50px;
  background: linear-gradient(180deg, rgba(234, 88, 12, 0.03), transparent);
}

.scenarios-container {
  max-width: 1200px;
  margin: 0 auto;
}

.scenarios-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  -webkit-overflow-scrolling: touch;
}

.scenarios-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.scenarios-table thead {
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.2), rgba(30, 30, 35, 0.1));
}

.scenarios-table th {
  padding: 20px 15px;
  text-align: left;
  font-weight: 700;
  font-size: 15px;
  color: var(--primary-color);
  border-bottom: 2px solid rgba(234, 88, 12, 0.3);
  white-space: nowrap;
}

.scenarios-table th:first-child {
  border-radius: 19px 0 0 0;
}

.scenarios-table th:last-child {
  border-radius: 0 19px 0 0;
}

.scenarios-table td {
  padding: 18px 15px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
  line-height: 1.6;
}

.scenarios-table tbody tr {
  transition: var(--transition-normal);
}

.scenarios-table tbody tr:hover {
  background: var(--table-row-hover);
}

.scenarios-table tbody tr:last-child td {
  border-bottom: none;
}

.scenarios-table tbody tr:last-child td:first-child {
  border-radius: 0 0 0 19px;
}

.scenarios-table tbody tr:last-child td:last-child {
  border-radius: 0 0 19px 0;
}

.field-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.2), rgba(30, 30, 35, 0.1));
  border-radius: 20px;
  font-weight: 600;
  color: var(--brand-orange);
  font-size: 13px;
  white-space: nowrap;
}

.person-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: rgba(30, 30, 35, 0.1);
  border-radius: 15px;
  font-size: 13px;
  color: var(--primary-color);
}

.pain-point {
  color: var(--text-muted);
}

.solution {
  color: var(--primary-color);
  font-weight: 500;
}

.example-box {
  background: var(--border-light);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--brand-orange);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* =====================================================
   8. 下载区域
   ===================================================== */
.download-section {
  min-height: 100vh;
  padding: 100px 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* 下载区域头部CTA文案 */
.download-header-text {
  text-align: center;
  margin-bottom: 40px;
}

.cta-headline {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-tagline {
  color: var(--text-secondary);
  font-size: clamp(15px, 2vw, 18px);
  max-width: 600px;
  line-height: 1.7;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: clamp(16px, 2vw, 18px);
  margin-bottom: 50px;
  text-align: center;
}

/* 页签导航 */
.download-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 5px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 40px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  margin-bottom: -5px;
}

.tab-btn:hover,
.tab-btn:focus {
  color: var(--text-secondary);
}

.tab-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.tab-btn.active {
  color: var(--brand-orange);
  border-bottom-color: var(--brand-orange);
}

/* 下载内容区域 */
.download-content {
  max-width: 1100px;
  width: 100%;
  display: none;
}

.download-content.active {
  display: flex;
  gap: 60px;
  align-items: center;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 左侧文字区域 */
.download-info {
  flex: 1;
}

.download-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.download-title span {
  color: var(--brand-orange);
}

.download-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 30px;
}

.download-features {
  list-style: none;
  margin-bottom: 35px;
}

.download-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.download-features li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: rgba(30, 30, 35, 0.15);
  border-radius: 50%;
  color: var(--primary-color);
  font-size: 12px;
  font-weight: bold;
  flex-shrink: 0;
}

/* 按钮组 */
.download-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 35px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
}

.dl-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.dl-btn-primary {
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  color: var(--text-primary);
}

.dl-btn-primary:hover,
.dl-btn-primary:focus {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(234, 88, 12, 0.4);
}

.dl-btn-secondary {
  background: rgba(30, 30, 35, 0.1);
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.dl-btn-secondary:hover,
.dl-btn-secondary:focus {
  background: var(--primary-color);
  color: var(--bg-dark);
}

.chip-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 15px;
  color: var(--primary-color);
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
}

.chip-hint:hover,
.chip-hint:focus {
  text-decoration: underline;
}

.version-info {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-hint);
  font-size: 13px;
}

.btn-version-below {
  display: block;
  text-align: center;
  margin-top: 10px;
  color: var(--text-hint);
  font-size: 12px;
}

.download-buttons-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.chip-hint-blue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 15px;
  color: #4da6ff;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
}

.chip-hint-blue:hover,
.chip-hint-blue:focus {
  color: #66b3ff;
  text-decoration: underline;
}

/* 右侧图片区域 */
.download-preview {
  flex: 1.5;
  max-width: 750px;
}

.preview-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow:
    0 25px 80px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-slow);
}

.preview-image:hover {
  transform: scale(1.05);
}

/* =====================================================
   9. 联系方式区域
   ===================================================== */
.contact-section {
  min-height: 100vh;
  padding: 100px 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(180deg, transparent 0%, rgba(234, 88, 12, 0.03) 50%, transparent 100%);
}

.contact-container {
  max-width: 1100px;
  width: 100%;
  text-align: center;
}

.contact-columns {
  display: flex;
  gap: 30px;
  align-items: stretch;
}

.contact-columns .contact-card {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(234, 88, 12, 0.05) 0%, transparent 50%);
  animation: contactGlow 10s linear infinite;
}

@keyframes contactGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 微信二维码区域 */
.wechat-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 视频教程区域 */
.video-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.video-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.video-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.video-scan-hint {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.wechat-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.qr-code-wrapper {
  display: inline-block;
  padding: 15px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow:
    0 0 30px rgba(234, 88, 12, 0.3),
    0 0 60px rgba(30, 30, 35, 0.2);
  transition: var(--transition-normal);
  position: relative;
}

.qr-code-wrapper:hover {
  transform: scale(1.05);
  box-shadow:
    0 0 40px rgba(234, 88, 12, 0.5),
    0 0 80px rgba(30, 30, 35, 0.3);
}

.qr-code-wrapper::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: linear-gradient(135deg, var(--brand-orange), var(--primary-color), var(--secondary-color));
  border-radius: 23px;
  z-index: -1;
  animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

.qr-code {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #f0f0f0, #e0e0e0);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 14px;
  flex-direction: column;
  gap: 10px;
}

.qr-code img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.wechat-hint {
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 14px;
}

/* 联系方式图标列表 */
.contact-methods {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 40px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition-normal);
  cursor: pointer;
}

.contact-method:hover,
.contact-method:focus {
  color: var(--brand-orange);
}

.contact-method-icon {
  width: 40px;
  height: 40px;
  background: rgba(234, 88, 12, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: var(--transition-normal);
}

.contact-method:hover .contact-method-icon,
.contact-method:focus .contact-method-icon {
  background: rgba(234, 88, 12, 0.2);
  transform: translateY(-3px);
}

/* =====================================================
   10. 模态框
   ===================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--modal-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: var(--z-modal);
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 50px;
  width: 100%;
  max-width: 420px;
  position: relative;
  animation: modalIn 0.3s ease;
  margin: 20px;
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: var(--border-light);
  border: none;
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover,
.modal-close:focus {
  background: var(--accent-color);
}

.modal-close:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.modal-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 28px;
  text-align: center;
  margin-bottom: 30px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(30, 30, 35, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  transition: var(--transition-normal);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(30, 30, 35, 0.2);
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  margin-top: 10px;
}

.form-btn:hover,
.form-btn:focus {
  box-shadow: 0 10px 30px rgba(123, 47, 255, 0.4);
}

.form-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.form-switch {
  text-align: center;
  margin-top: 25px;
  color: var(--text-muted);
  font-size: 14px;
}

.form-switch a {
  color: var(--brand-orange);
  text-decoration: none;
  cursor: pointer;
}

.form-switch a:hover,
.form-switch a:focus {
  text-decoration: underline;
}

/* =====================================================
   11. 芯片类型确认弹窗
   ===================================================== */
.chip-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: var(--z-tooltip);
}

.chip-modal-overlay.active {
  display: flex;
}

.chip-modal {
  background: linear-gradient(135deg, rgba(30, 30, 50, 0.98), rgba(20, 20, 35, 0.98));
  border: 1px solid var(--border-glow);
  border-radius: 25px;
  padding: 45px;
  width: 100%;
  max-width: 580px;
  position: relative;
  animation: chipModalIn 0.3s ease;
  margin: 20px;
}

@keyframes chipModalIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.chip-modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 22px;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chip-modal-close:hover,
.chip-modal-close:focus {
  background: var(--accent-color);
}

.chip-modal-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 24px;
  text-align: center;
  margin-bottom: 30px;
  background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.chip-modal-buttons {
  display: flex;
  gap: 15px;
  margin-bottom: 35px;
}

.chip-modal-btn {
  flex: 1;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.chip-modal-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.chip-modal-btn-primary {
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-red));
  color: var(--text-primary);
}

.chip-modal-btn-primary:hover,
.chip-modal-btn-primary:focus {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(234, 88, 12, 0.4);
}

.chip-modal-btn-secondary {
  background: rgba(30, 30, 35, 0.1);
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.chip-modal-btn-secondary:hover,
.chip-modal-btn-secondary:focus {
  background: var(--primary-color);
  color: var(--bg-dark);
}

.chip-modal-btn .btn-version {
  font-size: 11px;
  opacity: 0.7;
  font-weight: 400;
}

.chip-modal-guide {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  padding: 25px;
}

.chip-modal-guide-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chip-step {
  display: flex;
  gap: 15px;
  margin-bottom: 18px;
}

.chip-step:last-child {
  margin-bottom: 0;
}

.chip-step-num {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
}

.chip-step-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.chip-step-content strong {
  color: var(--text-primary);
}

/* =====================================================
   12. 页脚
   ===================================================== */
.footer {
  padding: 40px 50px;
  text-align: center;
  border-top: 1px solid rgba(234, 88, 12, 0.1);
}

.footer p {
  color: var(--text-hint);
  font-size: 14px;
}

.footer-logo {
  width: 40px;
  height: 40px;
  margin-bottom: 15px;
  opacity: 0.5;
}

/* =====================================================
   13. 动画效果
   ===================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   14. 响应式设计
   ===================================================== */

/* 大屏幕 */
@media (max-width: 1200px) {
  .download-content.active {
    gap: 40px;
  }
}

/* 中等屏幕 - 平板 */
@media (max-width: 900px) {
  .scenarios-section {
    padding: 50px 15px;
  }

  .scenarios-table th,
  .scenarios-table td {
    padding: 12px 10px;
    font-size: 12px;
  }

  .field-tag {
    padding: 4px 10px;
    font-size: 11px;
  }

  .example-box {
    padding: 8px 10px;
    font-size: 11px;
  }

  .download-section {
    padding: 60px 20px;
  }

  .download-tabs {
    gap: 5px;
  }

  .tab-btn {
    padding: 12px 25px;
    font-size: 15px;
  }

  .download-content.active {
    flex-direction: column;
    gap: 40px;
  }

  .download-title {
    font-size: 28px;
  }

  .download-desc {
    font-size: 14px;
  }

  .download-preview {
    max-width: 100%;
  }

  .download-buttons {
    flex-direction: column;
  }

  .dl-btn {
    justify-content: center;
  }
}

/* 移动端 */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 15px;
  }

  .nav-buttons {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero-logo {
    width: 100px;
    height: 100px;
  }

  .hero-logo-ring {
    width: 140px;
    height: 140px;
  }

  .intro-section {
    padding: 50px 20px;
  }

  .intro-title {
    font-size: 26px;
  }

  /* 新区域响应式 */
  .features-strip {
    padding: 40px 20px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .feature-card {
    padding: 20px 15px;
  }

  .feature-icon {
    width: 44px;
    height: 44px;
    font-size: 20px;
  }

  .feature-title {
    font-size: 14px;
  }

  .feature-desc {
    font-size: 12px;
  }

  .how-it-works {
    padding: 50px 20px;
  }

  .steps-row {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }

  .step-connector {
    transform: rotate(90deg);
    padding-top: 0;
  }

  .step-number {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }

  .demos-section {
    padding: 50px 20px;
  }

  .demos-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .demo-card {
    padding: 20px;
  }

  .cta-section {
    padding: 60px 20px;
  }

  .cta-card {
    padding: 40px 25px;
  }

  .download-section,
  .contact-section {
    padding: 60px 20px;
  }

  .section-title {
    font-size: 32px;
  }

  .contact-card {
    padding: 40px 25px;
  }

  .contact-columns {
    flex-direction: column;
  }

  .qr-code {
    width: 180px;
    height: 180px;
  }

  .modal {
    margin: 20px;
    padding: 30px;
  }

  .company-info {
    position: static;
    text-align: center;
    margin-top: 20px;
  }
}

/* 小屏幕手机 */
@media (max-width: 500px) {
  .tab-btn {
    padding: 10px 18px;
    font-size: 14px;
  }

  .section-title {
    font-size: 28px;
  }

  .download-title {
    font-size: 24px;
  }

  .chip-modal {
    padding: 30px 20px;
  }

  .chip-modal-buttons {
    flex-direction: column;
  }
}

/* =====================================================
   多页升级补充样式：定位条带 / 行业卡片 / 详情页头部
   ===================================================== */

/* 定位 + 核心数据 条带（首页） */
.positioning-section {
  padding: 80px 50px;
}
.positioning-container {
  max-width: 1200px;
  margin: 0 auto;
}
.positioning-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* 行业卡片：让"查看详情"按钮沉底对齐 */
.industry-card {
  display: flex;
  flex-direction: column;
}
.industry-card .card-cta {
  margin-top: auto;
  padding-top: 20px;
}
.card-cta .btn {
  text-transform: none;
  letter-spacing: 0.5px;
}

/* 详情页头部 */
.page-hero {
  min-height: 60vh;
  padding: 140px 20px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
}
.page-hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 900;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--primary-color) 45%, var(--brand-orange) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero-tagline {
  font-size: clamp(15px, 2.2vw, 19px);
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.8;
  margin-bottom: 40px;
  letter-spacing: 0.5px;
}

/* 详情页头部按钮统一去掉 uppercase，更贴合中文 */
.page-hero .btn,
.cta-section .btn {
  text-transform: none;
  letter-spacing: 0.5px;
}

@media (max-width: 900px) {
  .positioning-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .positioning-grid {
    grid-template-columns: 1fr;
  }
  .page-hero {
    padding: 120px 16px 40px;
    min-height: auto;
  }
}

/* =====================================================
   界面展示区（智能体 + 画布） + 图片灯箱
   ===================================================== */
.showcase-section {
  padding: 80px 50px;
}
.showcase-container {
  max-width: 1200px;
  margin: 0 auto;
}
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}
.showcase-label {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
}
.showcase-img-btn {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  cursor: zoom-in;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}
.showcase-img-btn:hover,
.showcase-img-btn:focus-visible {
  transform: translateY(-4px);
  border-color: var(--brand-orange);
  box-shadow: 0 20px 50px rgba(234, 88, 12, 0.15);
  outline: none;
}
.showcase-img {
  display: block;
  width: 100%;
  height: auto;
}

/* 主题自适应：默认(:root/深色)显 black；浅色主题切换 white */
.showcase-img-white {
  display: none;
}
[data-theme="light"] .showcase-img-black {
  display: none;
}
[data-theme="light"] .showcase-img-white {
  display: block;
}

/* 图片灯箱 */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 4000;
  background: rgba(0, 0, 0, 0.92);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 30px;
  cursor: zoom-out;
}
.lightbox-overlay.active {
  display: flex;
}
.lightbox-img {
  max-width: 95%;
  max-height: 90vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  cursor: zoom-out;
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
}

/* =====================================================
   X. Light Premium 重构覆盖层（位于文件末尾，覆盖前面的赛博朋克遗留）
   - 去掉所有标题的渐变文字 + Orbitron → 实色墨 + 精致无衬线
   - 隐藏粒子/光球/网格等深色赛博背景设备
   - 中和强发光/彩虹动效 → 中性阴影
   - 按钮/卡片简化为干净的浅色高级风
   ===================================================== */

/* —— (1) 标题：去渐变文字 + 去 Orbitron + 实色墨 —— */
.logo-text,
.hero-title,
.hero-title span,
.features-strip-title,
.how-it-works-title,
.demos-title,
.cta-title,
.intro-title,
.cta-headline,
.section-title,
.modal-title,
.chip-modal-title,
.page-hero-title {
  font-family: var(--font-sans) !important;
  background: none !important;
  -webkit-text-fill-color: currentColor !important;
  color: var(--ink) !important;
  letter-spacing: -0.01em;
  text-shadow: none !important;
}
.hero-title, .page-hero-title { font-weight: 800 !important; }
.section-title, .demos-title, .cta-headline, .intro-title,
.features-strip-title, .how-it-works-title, .cta-title { font-weight: 700 !important; }

/* 数字徽标同样去渐变，保留橙色强调 */
.demo-stat-value {
  background: none !important;
  -webkit-text-fill-color: currentColor !important;
  color: var(--accent) !important;
}

/* —— (2) 隐藏深色赛博背景设备（粒子/光球/彩虹环/动画底）—— */
.floating-orbs,
.particles,
.bg-animation,
.grid-bg,
.hero-logo-ring {
  display: none !important;
}
[data-theme="dark"] .grid-bg { display: block !important; opacity: .45; }

/* hero 区改用极淡暖底 + 大量留白 */
.hero-section,
.page-hero {
  background:
    radial-gradient(1100px 460px at 50% -12%, var(--accent-softer), transparent 72%),
    var(--bg) !important;
  padding: clamp(72px, 11vh, 140px) var(--space-5) var(--space-9) !important;
}
.hero-section { min-height: 84vh; }

/* —— (3) 中和发光：logo/标题/步骤等强发光与彩虹动效置为静态 —— */
.hero-logo,
.logo-icon,
.qr-wrapper,
.qr-code-wrapper,
.contact-card {
  filter: none !important;
  box-shadow: var(--shadow-sm) !important;
  animation: none !important;
}
@keyframes logoGlow { 0%,100% { box-shadow: none; } 50% { box-shadow: none; } }
@keyframes titleGlow { 0%,100% { filter: none; } 50% { filter: none; } }
@keyframes ringPulse { 0% { opacity: 0; } 100% { opacity: 0; } }
@keyframes contactGlow { from { transform: none; } to { transform: none; } }
@keyframes borderRotate { to { transform: none; } }

/* —— (4) 按钮：干净浅色风，去掉 uppercase/字距 —— */
.btn, .dl-btn,
.btn-primary, .btn-gold, .btn-outline, .btn-manual,
.dl-btn-primary, .dl-btn-secondary {
  text-transform: none !important;
  letter-spacing: 0 !important;
  font-family: var(--font-sans) !important;
  font-weight: 600;
  border-radius: var(--radius-pill) !important;
}
/* 主按钮：实心奎可橙 */
.btn-primary, .dl-btn-primary {
  background: var(--accent) !important;
  color: #fff !important;
  border: 1px solid var(--accent) !important;
  box-shadow: 0 1px 2px rgba(234, 88, 12, 0.28), 0 8px 22px rgba(234, 88, 12, 0.16) !important;
}
.btn-primary:hover, .dl-btn-primary:hover {
  background: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
  box-shadow: 0 2px 4px rgba(234, 88, 12, 0.3), 0 12px 28px rgba(234, 88, 12, 0.22) !important;
}
/* 次按钮：强对比描边（注册登录/快速激活/激活教程等，浅底上更醒目）*/
.btn-gold, .btn-outline, .btn-manual, .dl-btn-secondary {
  background: var(--surface) !important;
  color: var(--ink) !important;
  border: 1px solid var(--ink) !important;
  box-shadow: var(--shadow-sm) !important;
}
.btn-gold:hover, .btn-outline:hover, .btn-manual:hover {
  background: var(--accent-soft) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

/* —— (5) 卡片：去顶部彩条，白底 + 细边 + 软阴影，hover 轻微抬升 —— */
.feature-card::before,
.positioning-card::before,
.demo-card::before,
.industry-card::before,
.intro-card::before,
.contact-card::before,
.pricing-card::before {
  display: none !important;
}
.feature-card,
.positioning-card,
.demo-card,
.industry-card,
.intro-card,
.contact-card,
.pricing-card {
  background: var(--surface) !important;
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-sm) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal) !important;
}
.feature-card:hover,
.positioning-card:hover,
.demo-card:hover,
.industry-card:hover,
.pricing-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md) !important;
  border-color: var(--accent-line) !important;
}

/* —— (6) 全站底色 / 正文 / 容器 —— */
body {
  background: var(--bg) !important;
  color: var(--ink) !important;
  font-family: var(--font-sans) !important;
}
a { color: var(--accent); }
.company-info { color: var(--ink-3) !important; }

/* —— (7) 导航栏浅色化（细节，配合 Part 2 新结构）—— */
.navbar {
  background: var(--navbar-bg) !important;
  backdrop-filter: var(--navbar-blur);
  -webkit-backdrop-filter: var(--navbar-blur);
  border-bottom: 1px solid var(--line) !important;
}

/* —— (8) 浮动 dock（首页右下）浅色化，去旧橙青渐变 —— */
.float-item {
  background: var(--surface) !important;
  color: var(--ink) !important;
  border: 1px solid var(--line) !important;
  box-shadow: var(--shadow-md) !important;
}
.float-item:hover {
  background: var(--accent) !important;
  color: #fff !important;
  border-color: var(--accent) !important;
}
.float-toggle {
  background: var(--accent) !important;
  box-shadow: 0 8px 24px rgba(234, 88, 12, 0.35) !important;
}

/* —— (9) slogan 文字色收敛（原金色 → 墨/橙）—— */
.slogan-cn { color: var(--ink) !important; }
.slogan-en { color: var(--ink-3) !important; }

/* =====================================================
   Y. 统一顶部内容导航（Part 2：产品 / 使用场景 / 行业方案▾ / 定价 / 下载）
   ===================================================== */
.navbar {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: 64px;
  padding: 0 clamp(16px, 4vw, 48px);
}
.logo-container { flex: 0 0 auto; }
.logo-container a { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon { border-radius: 12px; }

/* 主链接区 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1 1 auto;
  justify-content: center;
}
.nav-links > a,
.nav-dropbtn {
  position: relative;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-links > a::after,
.nav-dropbtn::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px; border-radius: 2px;
  background: var(--accent);
  opacity: 0; transform: translateY(2px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.nav-links > a:hover,
.nav-dropbtn:hover { color: var(--accent); background: var(--accent-soft); }
.nav-links > a:hover::after,
.nav-dropbtn:hover::after { opacity: 1; transform: translateY(0); }
.nav-links > a.active { color: var(--accent); font-weight: 600; }
.nav-links > a.active::after { opacity: 1; transform: translateY(0); }

/* 行业方案下拉 */
.nav-dropdown { position: relative; }
.nav-dropbtn .caret { font-size: 0.7em; margin-left: 4px; opacity: .7; }
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  display: flex; flex-direction: column; min-width: 172px;
  padding: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-dropdown);
}
.nav-dropdown-menu::before{content:'';position:absolute;top:-6px;left:0;right:0;height:6px;}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
  padding: 8px 12px;
  font-size: var(--text-sm);
  color: var(--ink-2);
  text-decoration: none;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.nav-dropdown-menu a:hover { background: var(--accent-soft); color: var(--accent); }

/* 右侧操作区 */
.nav-actions { display: flex; align-items: center; gap: var(--space-3); flex: 0 0 auto; }
.nav-actions .btn { padding: 9px 18px; font-size: var(--text-sm); }
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius-pill);
  background: var(--surface); border: 1px solid var(--line);
  color: var(--ink-2); cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
[data-theme="dark"] .theme-toggle { background: var(--surface); color: var(--ink); }

/* 移动端：隐藏主链接区与桌面按钮，显示汉堡 */
.hamburger { display: none; }
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .navbar { height: 56px; }
  .hamburger { display: inline-flex; }
}

/* === 移动端菜单浅色化（覆盖硬编码深色底）+ 汉堡线色 === */
.mobile-menu {
  background: var(--bg) !important;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}
.hamburger span { background: var(--ink) !important; }
.hamburger:hover span, .hamburger.active span { background: var(--accent) !important; }

/* 行业方案下拉的当前页高亮 */
.nav-dropbtn.active { color: var(--accent) !important; font-weight: 600; }
.nav-dropbtn.active::after { opacity: 1 !important; transform: translateY(0) !important; }

/* === 首页「使用场景」精简 teaser === */
.cases-teaser { padding: var(--space-9) var(--space-5); text-align: center; }
.cases-teaser-inner { max-width: var(--container-narrow); margin: 0 auto; }
.cases-teaser .demos-subtitle { max-width: 640px; margin: var(--space-4) auto var(--space-6); color: var(--ink-3); }

/* 主题切换图标：默认（浅色）显示太阳，深色显示月亮 */
.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }