@charset "UTF-8";

/* ==========================================================================
   【汉服纹样风】通义千问官网主题样式
   配色系统：
     主色织金：#D4AF37
     辅色缎红：#8E24AA (绛紫深红缎面)
     点缀玉白：#F5F5F5
     背景深缎：#1A237E (深靛青夜华缎)
   元素：
     织锦缎面光泽背景、云肩如意纹样边框、马面裙褶裥分栏、盘扣造型按钮
   ========================================================================== */

:root {
  --color-gold: #D4AF37;
  --color-gold-light: #F7E7B4;
  --color-gold-dark: #A67C1E;
  --color-satin-red: #8E24AA;
  --color-satin-red-dark: #5c1170;
  --color-jade-white: #F5F5F5;
  --color-satin-bg: #121858;
  --color-satin-deep: #0d123d;
  --color-satin-card: rgba(26, 35, 126, 0.78);
  --color-border-gold: rgba(212, 175, 55, 0.45);
  --color-text-muted: #D1D5DB;
  --font-serif: "ZCOOL XiaoWei", "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", SimSun, STSong, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.18);
  --transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-serif);
  background-color: var(--color-satin-deep);
  color: var(--color-jade-white);
  line-height: 1.75;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  /* 织锦缎面流光背景 */
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(142, 36, 170, 0.22) 0%, transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(212, 175, 55, 0.16) 0%, transparent 40%),
    linear-gradient(135deg, #101545 0%, #1A237E 50%, #0d123d 100%);
  background-attachment: fixed;
}

/* 织锦缎面流光层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(212, 175, 55, 0.02) 0px,
    rgba(212, 175, 55, 0.02) 2px,
    transparent 2px,
    transparent 12px
  );
  pointer-events: none;
  z-index: 0;
}

/* 缎面光斑游走 */
body::after {
  content: "";
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(212, 175, 55, 0.06) 0%, transparent 60%);
  animation: satinFlow 16s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes satinFlow {
  0% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-5%, 4%) rotate(2deg); }
  100% { transform: translate(4%, -3%) rotate(-1deg); }
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   云肩纹样装饰框 (Cloud-Shoulder Border)
   ========================================================================== */
.yunjian-box {
  position: relative;
  background: var(--color-satin-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-gold);
  border-radius: 14px;
  padding: 32px 28px;
  box-shadow: 0 10px 30px rgba(10, 14, 46, 0.6), inset 0 0 18px rgba(212, 175, 55, 0.05);
  transition: var(--transition);
}

.yunjian-box::before,
.yunjian-box::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  pointer-events: none;
  border-color: var(--color-gold);
  border-style: solid;
  transition: var(--transition);
}

.yunjian-box::before {
  top: 6px;
  left: 6px;
  border-width: 2px 0 0 2px;
  border-top-left-radius: 8px;
  box-shadow: -2px -2px 6px rgba(212, 175, 55, 0.3);
}

.yunjian-box::after {
  bottom: 6px;
  right: 6px;
  border-width: 0 2px 2px 0;
  border-bottom-right-radius: 8px;
  box-shadow: 2px 2px 6px rgba(212, 175, 55, 0.3);
}

.yunjian-box:hover {
  transform: translateY(-4px);
  border-color: var(--color-gold);
  box-shadow: 0 14px 40px rgba(142, 36, 170, 0.25), 0 0 24px rgba(212, 175, 55, 0.25);
}

.yunjian-box:hover::before,
.yunjian-box:hover::after {
  width: 32px;
  height: 32px;
}

/* ==========================================================================
   马面裙褶裥分栏 (Mamian-Pleats Divider)
   ========================================================================== */
.mamian-divider {
  position: relative;
  margin: 64px auto;
  max-width: 1200px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mamian-divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(212, 175, 55, 0.2) 15%, 
    var(--color-gold) 50%, 
    rgba(212, 175, 55, 0.2) 85%, 
    transparent 100%
  );
}

.mamian-pleats-badge {
  position: relative;
  z-index: 1;
  background: #141c60;
  border: 1px solid var(--color-gold);
  border-radius: 20px;
  padding: 4px 22px;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--color-gold-light);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
}

.mamian-pleats-badge::before,
.mamian-pleats-badge::after {
  content: "❖";
  color: var(--color-gold);
  font-size: 0.75rem;
}

/* ==========================================================================
   盘扣造型按钮 (Pankou Button)
   ========================================================================== */
.btn-pankou {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  position: relative;
  padding: 12px 28px;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: #101545;
  background: linear-gradient(135deg, #FFF3D1 0%, #D4AF37 50%, #B8860B 100%);
  border: none;
  border-radius: 30px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.7);
  transition: var(--transition);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-pankou::before {
  content: "✿";
  font-size: 1.05rem;
  color: #5c1170;
  transition: transform 0.3s ease;
}

.btn-pankou::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 34px;
  border: 1px dashed rgba(212, 175, 55, 0.7);
  pointer-events: none;
  transition: var(--transition);
}

.btn-pankou:hover {
  transform: translateY(-2px) scale(1.02);
  background: linear-gradient(135deg, #FFF8E7 0%, #E5C158 50%, #C99718 100%);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.6), 0 0 12px rgba(142, 36, 170, 0.4);
}

.btn-pankou:hover::before {
  transform: rotate(45deg);
}

.btn-pankou:hover::after {
  inset: -5px;
  border-color: var(--color-gold-light);
}

.btn-pankou-secondary {
  background: rgba(142, 36, 170, 0.35);
  color: var(--color-gold-light);
  border: 1px solid var(--color-gold);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  text-shadow: none;
}

.btn-pankou-secondary::before {
  color: var(--color-gold);
}

.btn-pankou-secondary:hover {
  background: rgba(142, 36, 170, 0.65);
  color: #FFFFFF;
}

/* ==========================================================================
   页面容器与排版
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 24, 88, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-gold);
  box-shadow: 0 4px 20px rgba(10, 14, 46, 0.8);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--color-gold);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.4);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-gold-light);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.brand-tag {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: linear-gradient(135deg, var(--color-satin-red), #5c1170);
  border: 1px solid var(--color-gold);
  border-radius: 10px;
  color: var(--color-gold-light);
  margin-left: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
}

.nav-links a {
  font-size: 0.92rem;
  letter-spacing: 1px;
  color: var(--color-jade-white);
  padding: 6px 10px;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-gold-light);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 80%;
}

/* ==========================================================================
   Hero 首屏 + 下载区 (零滚动即可转化)
   ========================================================================== */
.hero-section {
  padding: 48px 0 36px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(142, 36, 170, 0.28);
  border: 1px solid var(--color-gold);
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--color-gold-light);
  margin-bottom: 20px;
  letter-spacing: 1.5px;
}

.hero-title {
  font-size: 2.15rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-gold-light);
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.7), 0 0 12px rgba(212, 175, 55, 0.25);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-gold);
  margin-bottom: 16px;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero-subtitle::before,
.hero-subtitle::after {
  content: "— ❖ —";
  font-size: 0.85rem;
  color: var(--color-satin-red);
}

.hero-desc {
  max-width: 840px;
  margin: 0 auto 36px;
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* 首屏并列 4 个下载入口 */
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 10px;
}

.download-card {
  background: linear-gradient(160deg, rgba(30, 42, 140, 0.85) 0%, rgba(18, 24, 88, 0.95) 100%);
  border: 1px solid var(--color-border-gold);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.download-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.download-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-gold);
  box-shadow: 0 12px 28px rgba(10, 14, 46, 0.7), 0 0 20px rgba(212, 175, 55, 0.35);
}

.download-icon {
  font-size: 2.2rem;
  margin-bottom: 10px;
  color: var(--color-gold-light);
  display: inline-block;
  transition: transform 0.3s ease;
}

.download-card:hover .download-icon {
  transform: scale(1.12);
}

.download-title {
  font-size: 1.1rem;
  color: var(--color-gold-light);
  font-weight: 600;
  margin-bottom: 6px;
}

.download-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

/* ==========================================================================
   四大功能模块 (版式统一：模块名 + 情绪化短标题 + 场景化功能点)
   ========================================================================== */
.feature-section {
  padding: 56px 0;
  position: relative;
}

.feature-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

.feature-box.reverse {
  direction: rtl;
}

.feature-box.reverse > * {
  direction: ltr;
}

.feature-content {
  position: relative;
}

.module-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(142, 36, 170, 0.35);
  border: 1px solid var(--color-gold);
  border-radius: 20px;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  color: var(--color-gold-light);
  margin-bottom: 14px;
}

.feature-title {
  font-size: 1.75rem;
  color: var(--color-gold-light);
  letter-spacing: 2px;
  margin-bottom: 10px;
  font-weight: 700;
  line-height: 1.35;
}

.feature-subtitle {
  font-size: 1.05rem;
  color: var(--color-gold);
  margin-bottom: 22px;
  letter-spacing: 1px;
}

.scenario-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.scenario-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-jade-white);
  line-height: 1.7;
}

.scenario-bullet {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-size: 0.72rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-media {
  position: relative;
  text-align: center;
}

.feature-media img {
  border-radius: 12px;
  border: 1px solid var(--color-border-gold);
  box-shadow: 0 12px 36px rgba(10, 14, 46, 0.8), 0 0 16px rgba(212, 175, 55, 0.2);
  transition: var(--transition);
}

.feature-media:hover img {
  transform: scale(1.02);
  border-color: var(--color-gold);
}

/* ==========================================================================
   网页版入口区 (零安装兜底)
   ========================================================================== */
.web-entry-section {
  padding: 60px 0;
  position: relative;
}

.web-entry-banner {
  background: linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(142, 36, 170, 0.3) 100%);
  border: 2px solid var(--color-gold);
  border-radius: 16px;
  padding: 44px 36px;
  text-align: center;
  position: relative;
  box-shadow: 0 16px 40px rgba(10, 14, 46, 0.7), inset 0 0 30px rgba(212, 175, 55, 0.1);
}

.web-entry-banner::before,
.web-entry-banner::after {
  content: "❖";
  position: absolute;
  top: 18px;
  color: var(--color-gold);
  font-size: 1.2rem;
}

.web-entry-banner::before { left: 24px; }
.web-entry-banner::after { right: 24px; }

.web-entry-title {
  font-size: 1.85rem;
  color: var(--color-gold-light);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.web-entry-desc {
  max-width: 760px;
  margin: 0 auto 28px;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.web-entry-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ==========================================================================
   网页版专用页 (web.html) 样式
   ========================================================================== */
.chat-preview-box {
  background: rgba(18, 24, 88, 0.85);
  border: 1px solid var(--color-border-gold);
  border-radius: 14px;
  padding: 28px;
  margin: 32px 0 40px;
  box-shadow: 0 12px 30px rgba(10, 14, 46, 0.6);
}

.chat-input-row {
  display: flex;
  gap: 12px;
  position: relative;
}

.chat-input {
  flex: 1;
  background: rgba(10, 14, 46, 0.75);
  border: 1px solid var(--color-gold);
  border-radius: 24px;
  padding: 14px 22px;
  color: var(--color-jade-white);
  font-size: 0.95rem;
  font-family: var(--font-serif);
  outline: none;
  transition: var(--transition);
}

.chat-input:focus {
  border-color: var(--color-gold-light);
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.4);
}

.chat-input::placeholder {
  color: rgba(209, 213, 219, 0.6);
}

.web-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}

.web-step-card {
  background: var(--color-satin-card);
  border: 1px solid var(--color-border-gold);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
}

.web-step-number {
  display: inline-block;
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 8px;
  font-weight: 700;
}

.web-step-title {
  font-size: 1.1rem;
  color: var(--color-gold-light);
  margin-bottom: 8px;
}

.web-step-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   帮助中心页 (help.html) 样式
   ========================================================================== */
.help-hero {
  padding: 48px 0 28px;
  text-align: center;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 36px 0 60px;
}

.faq-item {
  background: var(--color-satin-card);
  border: 1px solid var(--color-border-gold);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--color-gold-light);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question::after {
  content: "✦";
  font-size: 1rem;
  color: var(--color-gold);
  transition: transform 0.3s ease;
}

.faq-item.active {
  border-color: var(--color-gold);
  box-shadow: 0 6px 24px rgba(212, 175, 55, 0.2);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
  color: var(--color-satin-red);
}

.faq-answer {
  display: block;
  padding: 0 24px 22px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  border-top: 1px dashed rgba(212, 175, 55, 0.2);
  margin-top: 4px;
  padding-top: 16px;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.site-footer {
  margin-top: 60px;
  background: #0a0e2f;
  border-top: 1px solid var(--color-border-gold);
  padding: 40px 0 30px;
  text-align: center;
  position: relative;
  z-index: 10;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 18px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.88rem;
  color: var(--color-gold-light);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: #FFFFFF;
}

.footer-copy {
  font-size: 0.82rem;
  color: rgba(209, 213, 219, 0.7);
  letter-spacing: 1px;
}

/* ==========================================================================
   响应式断点 (移动端友好适应)
   ========================================================================== */
@media (max-width: 992px) {
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .feature-box,
  .feature-box.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  
  .web-steps-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    flex-direction: column;
    height: auto;
    padding: 16px 0;
    gap: 14px;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }
  
  .hero-title {
    font-size: 1.55rem;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
  }
  
  .download-grid {
    grid-template-columns: 1fr;
  }
  
  .web-entry-banner {
    padding: 28px 18px;
  }
}