/* ============================================================
   潮清秀 DeepFacial · VI v2.1 蓝金双色版
   主色：深邃蓝 #0A2463
   点缀：香槟金 #C9A96A
   中性：暖奶白 #F5F0E8
   品牌识别：醇厚紫 #5C2E5C（仅 Logo 微点缀，<2%）
   ============================================================ */

:root {
  /* 色彩体系 - VI v2.1 蓝金双色 */
  --brand-blue: #0A2463;        /* 深邃蓝 - 主色 */
  --brand-deep: #061838;        /* 深邃蓝加深 - 深色背景 */
  --brand-mid: #0F2A6B;         /* 深邃蓝中调 */
  --brand-light: #1F3A8A;       /* 深邃蓝亮调 */
  --brand-purple: #5C2E5C;      /* 醇厚紫 - 仅 Logo 品牌识别，不参与排版 */
  --brand-purple-light: #7B4480;/* 醇厚紫亮调 - 仅 Logo */
  --gold: #C9A96A;              /* 香槟金 - 奢华过渡 */
  --gold-light: #E6C890;        /* 香槟金亮调 */
  --gold-deep: #A8884A;         /* 香槟金深调 */
  --cream: #F5F0E8;             /* 暖奶白 - 主背景 */
  --cream-deep: #EBE3D4;        /* 暖奶白深调 */
  --ink: #1A2B3D;               /* 深墨蓝 - 正文文字 */
  --white: #ffffff;
  --muted: #8C95A3;             /* 中性灰 - 次要文字 */
  --muted-light: rgba(245, 240, 232, 0.72);
  --line: rgba(10, 36, 99, 0.12);
  --line-gold: rgba(201, 169, 106, 0.3);
  --line-purple: rgba(92, 46, 92, 0.25);
  --line-light: rgba(245, 240, 232, 0.15);
  --water-green: #6FA8A0;       /* 水润绿 - 功能色 */
  --mist-gray: #D8DCE2;         /* 雾光灰 */

  /* 兼容旧变量名（指向新色值） */
  --teal: var(--brand-blue);
  --teal-darker: var(--brand-deep);
  --teal-deep: var(--brand-mid);

  /* 字体 */
  --font-display: 'Playfair Display', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-serif-cn: 'Noto Serif SC', 'Songti SC', 'STSong', serif;

  /* 阴影 */
  --shadow-soft: 0 20px 60px rgba(10, 36, 99, 0.12);
  --shadow-deep: 0 30px 90px rgba(6, 24, 56, 0.4);
  --shadow-gold: 0 14px 40px rgba(201, 169, 106, 0.25);
  --shadow-purple: 0 14px 40px rgba(92, 46, 92, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, opacity 0.3s ease;
}

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

::selection {
  background: var(--gold);
  color: var(--teal-darker);
}

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(24px, 5vw, 80px);
  background: rgba(6, 24, 56, 0.55);
  border-bottom: 1px solid var(--line-light);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  transition: background 0.4s ease, padding 0.4s ease;
}

.site-header.scrolled {
  background: rgba(6, 24, 56, 0.92);
  padding: 12px clamp(24px, 5vw, 80px);
}

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

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  overflow: hidden;
  background: var(--cream);
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  box-shadow: 0 6px 20px rgba(201, 169, 106, 0.25);
}

.brand-mark img {
  width: 92%;
  height: 92%;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  color: var(--white);
}

.brand strong {
  font-family: var(--font-serif-cn);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand small {
  color: var(--gold-light);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.nav a {
  position: relative;
  white-space: nowrap;
  padding: 6px 0;
}

.nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.35s ease;
}

.nav a:not(.nav-cta):hover {
  color: var(--gold-light);
}

.nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 11px 22px;
  color: var(--teal-darker);
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-gold);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 48px rgba(201, 169, 106, 0.4);
}

.nav-toggle {
  display: none;
}

/* ============ Hero 首屏 ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 120px clamp(24px, 5vw, 80px) 80px;
  overflow: hidden;
  background: var(--teal-darker);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% center;
  opacity: 0.85;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(6, 24, 56, 0.92) 0%, rgba(10, 36, 99, 0.7) 40%, rgba(15, 42, 107, 0.5) 75%, rgba(6, 24, 56, 0.7) 100%),
    linear-gradient(180deg, rgba(6, 24, 56, 0.4) 0%, transparent 30%, transparent 70%, rgba(6, 24, 56, 0.88) 100%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 720px;
  color: var(--white);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--gold-light);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--gold);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-family: var(--font-serif-cn);
  font-size: clamp(64px, 11vw, 132px);
  line-height: 0.96;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* 注册商标 ® 标记 */
.reg-mark {
  font-family: var(--font-display);
  font-size: 0.38em;
  font-weight: 500;
  line-height: 1;
  vertical-align: super;
  letter-spacing: 0;
  margin-left: 0.08em;
}

h1 .en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 0.32em;
  letter-spacing: 0.2em;
  color: var(--gold-light);
  margin-top: 12px;
  opacity: 0.9;
}

h2 {
  margin-bottom: 22px;
  font-family: var(--font-serif-cn);
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: 0.02em;
}

h3 {
  margin-bottom: 10px;
  font-family: var(--font-serif-cn);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-subtitle {
  margin-bottom: 22px;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.hero-text {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  line-height: 1.85;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  color: var(--teal-darker);
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  box-shadow: var(--shadow-gold);
}

.btn.primary:hover {
  box-shadow: 0 22px 60px rgba(201, 169, 106, 0.45);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--gold-light);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 50px;
  max-width: 620px;
  padding-top: 36px;
  border-top: 1px solid var(--line-light);
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.65);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.hero-metrics b {
  display: block;
  margin-bottom: 4px;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--gold-light), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 0.6; }
  50% { transform: scaleY(1.4); opacity: 1; }
}

/* ============ 通用 Section ============ */
.section {
  position: relative;
  padding: clamp(80px, 10vw, 140px) clamp(24px, 5vw, 80px);
}

.section-heading {
  max-width: 1280px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 16px;
  max-width: 640px;
  margin: 12px auto 0;
  font-weight: 300;
}

.section-heading .eyebrow {
  justify-content: center;
}

.section-heading .eyebrow::before {
  display: none;
}

.section-heading h2 {
  position: relative;
  display: inline-block;
}

.section-heading h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 2px;
  margin: 22px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

/* 深色背景 Section */
.section.dark {
  background: var(--teal-darker);
  color: var(--white);
}

.section.dark h2,
.section.dark h3 {
  color: var(--white);
}

.section.dark .section-heading p:not(.eyebrow),
.section.dark .muted {
  color: var(--muted-light);
}

.section.dark .eyebrow {
  color: var(--gold-light);
}

/* ============ 品牌故事 + 核心卖点 ============ */
.brand-story {
  position: relative;
  background:
    radial-gradient(ellipse at 85% 15%, rgba(201, 169, 106, 0.18) 0%, transparent 45%),
    radial-gradient(ellipse at 15% 85%, rgba(31, 58, 138, 0.35) 0%, transparent 55%),
    linear-gradient(180deg, var(--brand-deep) 0%, var(--brand-mid) 50%, var(--brand-deep) 100%);
  color: var(--cream);
  padding: clamp(100px, 12vw, 180px) clamp(24px, 5vw, 80px);
  overflow: hidden;
}

/* 背景装饰层 */
.brand-story-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* 大号水印文字 */
.bg-watermark {
  position: absolute;
  top: 6%;
  left: -3%;
  font-family: var(--font-display);
  font-size: clamp(180px, 28vw, 380px);
  font-style: italic;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 0.85;
  color: var(--gold-light);
  opacity: 0.07;
  white-space: nowrap;
  user-select: none;
}

.bg-watermark.sub {
  top: auto;
  bottom: 4%;
  left: auto;
  right: -3%;
  font-size: clamp(120px, 20vw, 280px);
  opacity: 0.05;
  color: var(--gold-light);
}

/* 装饰圆环 */
.bg-ring {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.bg-ring.ring-1 {
  top: -100px;
  right: -100px;
  width: 420px;
  height: 420px;
  border: 1px solid var(--line-gold);
  opacity: 0.55;
}

.bg-ring.ring-2 {
  top: 18%;
  right: 6%;
  width: 220px;
  height: 220px;
  border: 1px dashed var(--line-gold);
  opacity: 0.45;
  animation: rotateSlow 60s linear infinite;
}

.bg-ring.ring-3 {
  bottom: 10%;
  left: 4%;
  width: 280px;
  height: 280px;
  border: 1px solid var(--line-gold);
  opacity: 0.4;
  animation: rotateSlow 90s linear infinite reverse;
}

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

/* 柔光晕 */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.bg-glow.glow-1 {
  top: 25%;
  left: 8%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(201, 169, 106, 0.32) 0%, transparent 70%);
}

.bg-glow.glow-2 {
  bottom: 20%;
  right: 10%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(31, 58, 138, 0.55) 0%, transparent 70%);
}

/* 装饰垂直金线 */
.bg-line {
  position: absolute;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  opacity: 0.35;
}

.bg-line.line-v1 {
  top: 10%;
  bottom: 10%;
  left: 12%;
}

.bg-line.line-v2 {
  top: 20%;
  bottom: 20%;
  right: 12%;
}

/* 让内容浮在装饰之上 */
.brand-story > *:not(.brand-story-bg) {
  position: relative;
  z-index: 1;
}

.brand-story-intro {
  max-width: 880px;
  margin: 0 auto 100px;
  text-align: center;
}

.brand-story-intro .eyebrow {
  justify-content: center;
  color: var(--gold-light);
}

.brand-story-intro h2 {
  position: relative;
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-serif-cn);
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--white);
}

.brand-story-intro h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 2px;
  margin: 28px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.brand-story-intro .intro-sub {
  margin-top: 22px;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.18em;
  opacity: 0.85;
}

/* ============ 章节卡片容器 ============ */
.story-chapters {
  max-width: 920px;
  margin: 0 auto 120px;
  display: flex;
  flex-direction: column;
  gap: 80px;
}

/* 单个章节卡 */
.chapter {
  position: relative;
  padding: 56px 56px 56px 96px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(201, 169, 106, 0.18);
  border-radius: 4px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: 0 20px 60px rgba(6, 24, 56, 0.3);
  transition: border-color 0.4s ease, transform 0.4s ease, box-shadow 0.4s ease;
}

.chapter:hover {
  border-color: rgba(201, 169, 106, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 30px 80px rgba(6, 24, 56, 0.5);
}

/* 章节左侧编号区 */
.chapter-mark {
  position: absolute;
  top: 56px;
  left: 32px;
  width: 44px;
  text-align: center;
}

.chapter-num {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 44px;
  font-weight: 500;
  color: var(--gold);
  line-height: 1;
  letter-spacing: 0.02em;
}

.chapter-label {
  display: block;
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: 10px;
  font-style: italic;
  letter-spacing: 0.2em;
  color: var(--gold-light);
  opacity: 0.75;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  margin-left: 14px;
}

/* 章节正文区 */
.chapter-body {
  color: var(--cream);
}

.chapter-lead {
  margin: 0 0 32px;
  color: rgba(245, 240, 232, 0.92);
  font-family: var(--font-serif-cn);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 2;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* 章节引述块 */
.chapter-quote {
  position: relative;
  margin: 0;
  padding: 28px 56px 16px;
  text-align: center;
  border-left: 2px solid var(--gold);
  border-right: 2px solid var(--gold);
  background: linear-gradient(180deg, rgba(201, 169, 106, 0.06) 0%, transparent 100%);
}

.chapter-quote .quote-mark {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 80px;
  font-style: italic;
  line-height: 1;
  color: var(--gold);
  opacity: 0.7;
  font-weight: 400;
}

.chapter-quote p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--gold-light);
  font-family: var(--font-serif-cn);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.9;
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.04em;
}

/* 过渡段 */
.chapter-shift {
  margin: 0 0 28px;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 13px;
  line-height: 1.8;
  font-style: italic;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.85;
}

/* 拉引句 */
.chapter-pull {
  margin: 0 0 32px;
  padding: 32px 24px;
  position: relative;
  text-align: center;
  background: linear-gradient(180deg, rgba(201, 169, 106, 0.08) 0%, rgba(201, 169, 106, 0.02) 100%);
  border-radius: 4px;
}

.chapter-pull::before,
.chapter-pull::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 1px;
  background: var(--gold);
  opacity: 0.7;
}

.chapter-pull::before { top: 0; }
.chapter-pull::after { bottom: 0; }

.chapter-pull span {
  display: block;
  max-width: 620px;
  margin: 0 auto;
  color: var(--white);
  font-family: var(--font-serif-cn);
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.7;
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* 章节正文 */
.chapter-text {
  margin: 0 0 24px;
  color: rgba(245, 240, 232, 0.88);
  font-family: var(--font-serif-cn);
  font-size: 16px;
  line-height: 2.05;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.chapter-text b {
  color: var(--gold-light);
  font-weight: 600;
}

/* 中心视觉句 - 章节内版 */
.chapter-centerpiece {
  position: relative;
  margin: 0 0 32px;
  padding: 40px 24px;
  text-align: center;
  background: linear-gradient(180deg, transparent 0%, rgba(201, 169, 106, 0.1) 50%, transparent 100%);
}

.centerpiece-eyebrow {
  margin: 0 0 18px !important;
  color: var(--gold-light) !important;
  font-family: var(--font-display);
  font-size: 12px !important;
  font-style: italic;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  text-align: center;
  opacity: 0.85;
}

.centerpiece-title {
  position: relative;
  display: inline-block;
  margin: 0;
  padding: 0 60px;
  color: var(--white);
  font-family: var(--font-serif-cn);
  font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.3;
}

.centerpiece-ornament {
  position: absolute;
  top: 50%;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
  transform: translateY(-50%);
}

.centerpiece-ornament.left { left: 0; }
.centerpiece-ornament.right {
  right: 0;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.centerpiece-ornament.left::after,
.centerpiece-ornament.right::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  transform: translateY(-50%);
}

.centerpiece-ornament.left::after { right: 0; }
.centerpiece-ornament.right::after { left: 0; }

/* 章节签名 */
.chapter-signature {
  margin-top: 36px;
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(201, 169, 106, 0.2);
}

.chapter-signature p {
  margin: 0 0 20px;
  color: rgba(245, 240, 232, 0.78);
  font-family: var(--font-serif-cn);
  font-size: 15px;
  line-height: 2;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.04em;
}

.signature-line {
  display: block;
  width: 40px;
  height: 1px;
  margin: 0 auto 14px;
  background: var(--gold);
  opacity: 0.8;
}

.chapter-signature em {
  display: block;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
}

.brand-story-intro .eyebrow {
  justify-content: center;
}

/* ============ 核心卖点区 ============ */
.brand-selling-points {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 80px;
  border-top: 1px solid rgba(201, 169, 106, 0.25);
}

.selling-points-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 18px;
}

.selling-divider {
  flex: 0 1 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.selling-points-title {
  margin: 0;
  text-align: center;
  color: var(--white);
  font-family: var(--font-serif-cn);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 500;
  letter-spacing: 0.12em;
}

.selling-points-summary {
  text-align: center;
  color: var(--gold-light);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin: 0 auto 56px;
  max-width: 720px;
  line-height: 1.8;
  opacity: 0.9;
}

.selling-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.selling-grid article {
  position: relative;
  padding: 36px 28px 32px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(201, 169, 106, 0.22);
  border-radius: 2px;
  transition: all 0.4s ease;
  overflow: hidden;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.selling-grid article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-light), var(--gold), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.selling-grid article:hover {
  background: linear-gradient(135deg, rgba(201, 169, 106, 0.12) 0%, rgba(201, 169, 106, 0.04) 100%);
  border-color: rgba(201, 169, 106, 0.5);
  transform: translateY(-6px);
  box-shadow: 0 30px 80px rgba(6, 24, 56, 0.5);
}

.selling-grid article:hover::before {
  transform: translateX(0);
}

.selling-grid article:hover h4 {
  color: var(--gold-light);
}

.selling-grid article:hover p {
  color: rgba(245, 240, 232, 0.92);
}

.selling-grid article:hover .selling-num {
  background: var(--gold);
  color: var(--brand-deep);
  border-color: var(--gold);
}

.selling-num {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: rgba(201, 169, 106, 0.1);
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.3s ease;
}

.selling-grid article h4 {
  color: var(--white);
  font-family: var(--font-serif-cn);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
  transition: color 0.3s ease;
}

.selling-grid article p {
  color: rgba(245, 240, 232, 0.72);
  font-size: 13px;
  line-height: 1.85;
  font-weight: 300;
  margin: 0;
  transition: color 0.3s ease;
}

@media (max-width: 980px) {
  .selling-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .brand-lead,
  .brand-text {
    font-size: 15px;
  }
}

@media (max-width: 640px) {
  .selling-grid {
    grid-template-columns: 1fr;
  }
  .brand-quote {
    padding: 24px 16px 8px;
  }
  .brand-quote .quote-mark {
    font-size: 60px;
    top: -12px;
  }
  .centerpiece-title {
    padding: 0 36px;
    font-size: clamp(26px, 7vw, 36px);
  }
  .centerpiece-ornament {
    width: 28px;
  }
  .selling-divider {
    flex-basis: 40px;
  }
  /* 手机端隐藏部分背景装饰，避免视觉杂乱 */
  .bg-watermark {
    font-size: clamp(120px, 24vw, 180px);
    opacity: 0.025;
  }
  .bg-watermark.sub {
    display: none;
  }
  .bg-ring.ring-2,
  .bg-ring.ring-3 {
    display: none;
  }
  .bg-glow.glow-2 {
    display: none;
  }
}

/* ============ Pain Points 痛点 ============ */
.pain {
  background: var(--cream);
}

.tag-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  max-width: 1280px;
  margin: 0 auto;
}

.tag-grid span {
  padding: 22px 16px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--teal);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.04em;
  transition: all 0.3s ease;
}

.tag-grid span:hover {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

/* ============ Split 介绍区 ============ */
.split {
  position: relative;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: center;
  background: var(--white);
  overflow: hidden;
}

/* 装饰水印 */
.split-watermark {
  position: absolute;
  top: 50%;
  left: -3%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(180px, 28vw, 360px);
  font-style: italic;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 0.85;
  color: var(--brand-blue);
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  white-space: nowrap;
}

/* 右上装饰圆环 */
.split::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 360px;
  height: 360px;
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  opacity: 0.5;
  z-index: 0;
}

.split::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: 20%;
  width: 180px;
  height: 180px;
  border: 1px dashed var(--line-gold);
  border-radius: 50%;
  opacity: 0.4;
  z-index: 0;
}

.split-side,
.split-content {
  position: relative;
  z-index: 1;
}

.split .section-heading {
  margin: 0;
  text-align: left;
}

.split .section-heading h2::after {
  margin: 22px 0 0;
}

.split .section-heading .eyebrow {
  justify-content: flex-start;
}

/* 五步流程徽章 */
.split-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.split-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px 9px 14px;
  background: var(--cream);
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  color: var(--brand-blue);
  font-family: var(--font-serif-cn);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: all 0.3s ease;
}

.split-badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  display: inline-block;
}

.split-badge:hover {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: var(--white);
  transform: translateY(-2px);
}

.split-badge:hover i {
  background: var(--gold-light);
}

.split-content {
  max-width: 720px;
}

.split-content > p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
  font-weight: 300;
}

.feature-list {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}

.feature-list div {
  position: relative;
  padding: 26px 24px 26px 84px;
  background: var(--cream);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
  transition: all 0.3s ease;
  overflow: hidden;
}

.feature-list div::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(201, 169, 106, 0.06) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.feature-list div:hover {
  background: var(--cream-deep);
  transform: translateX(6px);
  box-shadow: var(--shadow-soft);
}

.feature-list div:hover::after {
  opacity: 1;
}

.feature-num {
  position: absolute;
  top: 50%;
  left: 24px;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 28px;
  font-style: italic;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.02em;
  line-height: 1;
}

.feature-list b,
.feature-list span {
  display: block;
}

.feature-list b {
  color: var(--teal);
  font-family: var(--font-serif-cn);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.feature-list span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

@media (max-width: 980px) {
  .split {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .split-watermark {
    font-size: clamp(120px, 24vw, 200px);
    top: 6%;
    left: -8%;
    transform: none;
  }
}

@media (max-width: 640px) {
  .feature-list div {
    padding: 22px 20px 22px 72px;
  }
  .feature-num {
    left: 18px;
    font-size: 24px;
  }
}

/* ============ 效果展示区（前后对比） ============ */
.showcase {
  position: relative;
  background: var(--teal-darker);
  color: var(--white);
  overflow: hidden;
}

.showcase::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -200px;
  width: 500px;
  height: 500px;
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  opacity: 0.15;
  pointer-events: none;
}

.showcase::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 360px;
  height: 360px;
  border: 1px dashed var(--line-gold);
  border-radius: 50%;
  opacity: 0.12;
  pointer-events: none;
}

.showcase .section-heading h2 {
  color: var(--white);
}

.showcase .section-heading p:not(.eyebrow) {
  color: var(--muted-light);
}

.showcase .section-heading .eyebrow {
  color: var(--gold-light);
}

/* 对比容器 */
.compare {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: stretch;
  max-width: 1180px;
  margin: 0 auto;
}

/* 单侧对比卡 */
.compare-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.compare-img {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 2px;
  border: 1px solid var(--line-light);
}

.compare-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6, 24, 56, 0.55) 100%);
  pointer-events: none;
}

.compare-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s ease;
}

.compare-card:hover .compare-img img {
  transform: scale(1.04);
}

/* 对比标签 */
.compare-label {
  display: flex;
  align-items: center;
  gap: 14px;
}

.compare-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  padding: 7px 14px;
  background: rgba(245, 240, 232, 0.08);
  border: 1px solid var(--line-light);
  color: var(--muted-light);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  border-radius: 2px;
}

.compare-tag.after {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-color: var(--gold);
  color: var(--brand-deep);
}

.compare-text {
  font-family: var(--font-serif-cn);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--white);
}

.compare-after .compare-text {
  color: var(--gold-light);
}

/* 对比要点列表 */
.compare-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.compare-points li {
  position: relative;
  padding-left: 22px;
  color: var(--muted-light);
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.compare-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 1px;
  background: var(--muted);
}

.compare-after .compare-points li {
  color: rgba(245, 240, 232, 0.85);
}

.compare-after .compare-points li::before {
  background: var(--gold);
  width: 12px;
  height: 1px;
  top: 9px;
}

.compare-after .compare-points li::after {
  content: '';
  position: absolute;
  left: 10px;
  top: 6px;
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg);
}

/* 中间箭头分隔 */
.compare-arrow {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 4px;
}

.arrow-line {
  display: block;
  width: 1px;
  flex: 1;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  opacity: 0.6;
}

.arrow-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--teal-darker);
  border: 1px solid var(--gold);
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 14px;
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0.04em;
  box-shadow: 0 0 0 6px rgba(6, 24, 56, 0.6), 0 12px 30px rgba(201, 169, 106, 0.25);
  flex-shrink: 0;
}

.compare-arrow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px dashed var(--line-gold);
  opacity: 0.4;
  animation: rotateRing 18s linear infinite;
}

@keyframes rotateRing {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 底部三大技术脚注 */
.compare-footnote {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1180px;
  margin: 80px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--line-light);
}

.compare-footnote div {
  text-align: center;
}

.compare-footnote div b {
  display: block;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
  font-style: italic;
}

.compare-footnote div b::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  margin: 12px auto 0;
  background: var(--line-gold);
}

.compare-footnote div span {
  color: var(--muted-light);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .compare {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .compare-arrow {
    flex-direction: row;
    padding: 8px 0;
  }
  .arrow-line {
    width: auto;
    height: 1px;
    flex: 1;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
  }
  .compare-footnote {
    margin-top: 56px;
  }
}

@media (max-width: 640px) {
  .compare {
    gap: 24px;
  }
  .compare-img {
    aspect-ratio: 1 / 1;
  }
  .compare-footnote {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .arrow-badge {
    width: 56px;
    height: 56px;
    font-size: 12px;
  }
}

/* ============ 护理流程 ============ */
.process {
  background: var(--cream);
}

.process .timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.process .timeline article {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 380px;
  padding: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  transition: all 0.4s ease;
}

.process .timeline article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
}

.process .step-img {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.process .step-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.process .timeline article:hover .step-img img {
  transform: scale(1.08);
}

.process .step-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 24, 56, 0.1) 0%, rgba(10, 36, 99, 0.5) 100%);
}

.process .step-num {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--teal-darker);
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}

.process .step-body {
  padding: 24px 22px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.process .step-body h3 {
  color: var(--teal);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.process .step-body p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  font-weight: 300;
}

/* ============ Benefits 为什么选择 ============ */
.benefits {
  background: var(--white);
  padding: clamp(40px, 5vw, 60px) clamp(24px, 5vw, 80px);
}

/* 精简版 benefits - 4 标签横向 */
.benefits-compact {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.benefit-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 120px;
}

.benefit-item b {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.4vw, 30px);
  font-weight: 500;
  color: var(--brand-blue);
  letter-spacing: 0.02em;
  line-height: 1;
}

.benefit-item span {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.benefit-divider {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  opacity: 0.6;
}

@media (max-width: 640px) {
  .benefits-compact {
    gap: 16px 24px;
    justify-content: space-between;
  }
  .benefit-item {
    min-width: calc(50% - 12px);
    flex: 1 1 calc(50% - 12px);
  }
  .benefit-divider {
    display: none;
  }
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  max-width: 1280px;
  margin: 0 auto;
}

.card-grid article {
  position: relative;
  padding: 36px 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: all 0.4s ease;
  overflow: hidden;
}

.card-grid article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-light), var(--gold), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.card-grid article:hover {
  background: var(--teal);
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
}

.card-grid article:hover::before {
  transform: translateX(0);
}

.card-grid article:hover h3,
.card-grid article:hover p {
  color: var(--white);
}

.card-grid article h3 {
  color: var(--teal);
  font-size: 19px;
  margin-bottom: 10px;
  transition: color 0.3s ease;
}

.card-grid article p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  font-weight: 300;
  transition: color 0.3s ease;
}

/* ============ 精华液系统 ============ */
.essence {
  background: var(--teal-darker);
  color: var(--white);
}

.essence .section-heading h2 {
  color: var(--white);
}

.essence .serum-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.essence .serum-grid article {
  position: relative;
  padding: 36px 30px 32px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-light);
  border-radius: 2px;
  overflow: hidden;
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

.essence .serum-grid article:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--line-gold);
  transform: translateY(-4px);
}

/* 精华液头部：编号 + 标题 + 用途 */
.serum-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-light);
}

.serum-num {
  display: inline-flex;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-deep));
  border-radius: 50%;
  color: var(--brand-deep);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(201, 169, 106, 0.35);
}

.serum-head h3 {
  color: var(--white);
  font-size: 19px;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.serum-use {
  color: var(--gold-light);
  font-size: 13px;
  line-height: 1.6;
  font-weight: 300;
  margin: 0;
}

/* 成分列表 */
.ingredient-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex: 1;
}

.ingredient {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.ingredient-img {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--line-gold);
  background: var(--cream);
}

.ingredient-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.15);
}

.ingredient-info {
  flex: 1;
  min-width: 0;
}

.ingredient-info b {
  display: block;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  margin-bottom: 2px;
}

.ingredient-info span {
  display: block;
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.ingredient-info p {
  color: var(--muted-light);
  font-size: 12px;
  line-height: 1.65;
  font-weight: 300;
  margin: 0;
}

/* ============ Audience 适合人群 ============ */
.audience {
  background: var(--cream);
}

.audience-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0;
}

.audience-panel > div h2 {
  margin-bottom: 18px;
}

.audience-panel > div p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 300;
}

.audience-panel ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.audience-panel li {
  padding: 20px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
  color: var(--brand-blue);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.04em;
  transition: all 0.3s ease;
}

.audience-panel li:hover {
  background: var(--teal);
  color: var(--white);
  transform: translateX(4px);
}

/* ============ Partner 门店合作 ============ */
.partner {
  background: var(--white);
}

.partner .price-card {
  margin-top: 60px;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1280px;
  margin: 0 auto;
}

.partner-grid article {
  padding: 32px 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.partner-grid article:hover {
  background: var(--teal);
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.partner-grid article:hover b,
.partner-grid article:hover span {
  color: var(--white);
}

.partner-grid article:hover span {
  color: var(--muted-light);
}

.partner-grid b {
  display: block;
  color: var(--teal);
  font-family: var(--font-serif-cn);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
  transition: color 0.3s ease;
}

.partner-grid span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  font-weight: 300;
  transition: color 0.3s ease;
}

/* ============ Pricing 合作方案 ============ */
.pricing {
  background: var(--cream);
}

.price-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow-soft);
}

.price-card h2 {
  margin-bottom: 18px;
}

.price-card > div > p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
  font-weight: 300;
}

.price-card-main {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.price-card-main .eyebrow {
  margin-bottom: 12px;
}

.price-title {
  margin: 0 0 14px;
  font-family: var(--font-serif-cn);
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  color: var(--brand-blue);
  letter-spacing: 0.04em;
}

.price-desc {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
  max-width: 480px;
}

.consult-btn {
  margin-top: 28px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-deep));
  color: var(--brand-deep);
  font-family: var(--font-serif-cn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 6px 20px rgba(201, 169, 106, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.consult-btn::after {
  content: '→';
  font-family: var(--font-display);
  font-size: 18px;
  transition: transform 0.3s ease;
}

.consult-btn:hover {
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(201, 169, 106, 0.45);
}

.consult-btn:hover::after {
  transform: translateX(4px);
}

.support-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  grid-column: 1 / -1;
}

.support-list li {
  padding: 14px 18px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  position: relative;
  padding-left: 32px;
}

.support-list li::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
}

/* ============ FAQ ============ */
.faq {
  background: var(--white);
}

.faq-list {
  max-width: 920px;
  margin: 0 auto;
}

.faq-group-title {
  margin: 44px 0 18px;
  color: var(--teal);
  font-family: var(--font-serif-cn);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-gold);
}

.faq-group-title:first-child {
  margin-top: 0;
}

.faq-list details {
  margin-bottom: 12px;
  padding: 20px 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.faq-list details:hover {
  border-color: var(--line-gold);
}

.faq-list details[open] {
  background: var(--white);
  border-color: var(--line-gold);
  box-shadow: var(--shadow-soft);
}

.faq-list summary {
  cursor: pointer;
  color: var(--teal);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  list-style: none;
  position: relative;
  padding-right: 32px;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 22px;
  font-weight: 300;
  transition: transform 0.3s ease;
}

.faq-list details[open] summary::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}

.faq-list p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
  font-weight: 300;
}

/* FAQ 折叠"更多问题"区 */
.faq-more {
  margin-top: 32px !important;
  padding: 0 !important;
  background: transparent !important;
  border: 1px dashed var(--line-gold) !important;
  border-radius: 4px;
}

.faq-more[open] {
  background: var(--cream) !important;
  border-style: solid !important;
  border-color: var(--line-gold) !important;
}

.faq-more-trigger {
  cursor: pointer;
  padding: 18px 28px;
  text-align: center;
  color: var(--gold-deep) !important;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px !important;
  font-weight: 500 !important;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  list-style: none;
  transition: color 0.3s ease;
}

.faq-more-trigger::-webkit-details-marker {
  display: none;
}

.faq-more-trigger::after {
  content: '＋';
  display: inline-block;
  margin-left: 12px;
  color: var(--gold);
  font-size: 16px;
  transition: transform 0.3s ease;
}

.faq-more[open] .faq-more-trigger::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-more-content {
  padding: 8px 24px 20px;
}

.faq-more-content details {
  margin-bottom: 8px;
  padding: 14px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.faq-more-content summary {
  cursor: pointer;
  color: var(--teal);
  font-weight: 500;
  font-size: 14px;
  list-style: none;
  position: relative;
  padding-right: 24px;
}

.faq-more-content summary::-webkit-details-marker {
  display: none;
}

.faq-more-content summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 18px;
  transition: transform 0.3s ease;
}

.faq-more-content details[open] summary::after {
  content: '−';
}

.faq-more-content p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  font-weight: 300;
}

/* ============ Contact 联系区 ============ */
.contact {
  position: relative;
  background: var(--teal-darker);
  color: var(--white);
  overflow: hidden;
  padding: 0;
}

.contact-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.25;
}

.contact-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(6, 24, 56, 0.7) 0%, rgba(6, 24, 56, 0.94) 100%);
}

.contact-card {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(80px, 10vw, 140px) 24px;
  text-align: center;
}

.contact-card .eyebrow {
  justify-content: center;
}

.contact-card h2 {
  color: var(--white);
  margin-bottom: 18px;
}

.contact-card h2::after {
  margin: 22px auto 0;
}

.contact-card > p {
  color: var(--muted-light);
  font-size: 16px;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.85;
  font-weight: 300;
}

.contact-card .hero-actions {
  justify-content: center;
  margin-top: 36px;
}

/* 二维码区 - 卡片式重构 */
.qr-section {
  margin: 56px auto 32px;
  max-width: 880px;
}

.qr-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 36px;
}

.qr-line {
  flex: 0 1 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.7;
}

.qr-eyebrow {
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  white-space: nowrap;
}

.qr-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}

.qr-card {
  position: relative;
  margin: 0;
  padding: 24px 20px 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line-light);
  border-radius: 4px;
  text-align: center;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: all 0.4s ease;
  overflow: hidden;
}

.qr-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.qr-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--line-gold);
  box-shadow: 0 20px 50px rgba(6, 24, 56, 0.4), 0 0 0 1px rgba(201, 169, 106, 0.2);
}

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

.qr-frame {
  display: flex;
  aspect-ratio: 1;
  align-items: center;
  justify-content: center;
  padding: 14px;
  background: var(--white);
  border-radius: 2px;
  box-shadow: 0 10px 24px rgba(6, 24, 56, 0.3);
  transition: transform 0.4s ease;
}

.qr-card:hover .qr-frame {
  transform: scale(1.03);
}

.qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-meta {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.qr-platform {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(201, 169, 106, 0.12);
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  font-style: italic;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.qr-card figcaption {
  color: var(--white);
  font-family: var(--font-serif-cn);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.qr-sub {
  color: var(--muted-light);
  font-size: 12px;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.company {
  margin: 32px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--line-light);
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  letter-spacing: 0.04em;
  font-weight: 300;
}

/* ============ Footer ============ */
footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(24px, 5vw, 80px);
  background: var(--teal-darker);
  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid var(--line-light);
  font-size: 12px;
  letter-spacing: 0.08em;
}

footer span:first-child {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold-light);
}

footer a {
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--gold-light);
}

footer .footer-beian {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 18px;
}

footer .beian-gov {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

footer .gov-badge {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

/* ============ Reveal 动画 ============ */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.js .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.js .hero .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .process .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-grid;
    width: 44px;
    height: 44px;
    place-items: center;
    padding: 0;
    background: transparent;
    border: 1px solid var(--line-light);
    border-radius: 50%;
    cursor: pointer;
  }

  .nav-toggle span {
    width: 18px;
    height: 1.5px;
    background: var(--white);
    transition: transform 0.3s ease;
  }

  .nav-toggle span + span {
    margin-top: 4px;
  }

  /* 汉堡菜单 - 三条等长横线 */
  .nav-toggle .toggle-bar {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--white);
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-toggle .toggle-bar + .toggle-bar {
    margin-top: 5px;
  }
  /* 展开时变 X：上线下旋 45°，中线淡出，下线上旋 -45° */
  .nav-toggle.open .toggle-bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }
  .nav-toggle.open .toggle-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .nav-toggle.open .toggle-bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 24px;
    left: 24px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 20px;
    background: rgba(6, 24, 56, 0.98);
    border: 1px solid var(--line-gold);
    border-radius: 2px;
    box-shadow: var(--shadow-deep);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--line-light);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .hero {
    padding: 110px 24px 70px;
  }

  .hero-bg img {
    object-position: 70% center;
  }

  .split,
  .audience-panel,
  .price-card {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .price-card {
    padding: 36px 24px;
  }

  .tag-grid,
  .card-grid,
  .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .essence .serum-grid {
    grid-template-columns: 1fr;
  }

  /* === 品牌故事区平板端过渡 === */
  .chapter {
    padding: 44px 36px 44px 80px;
  }
  .chapter-mark {
    left: 24px;
    top: 44px;
  }
  .chapter-num {
    font-size: 38px;
  }
  .story-chapters {
    gap: 56px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand small {
    display: none;
  }

  .hero {
    padding: 100px 18px 60px;
    min-height: 90vh;
  }

  .hero-bg img {
    object-position: 65% center;
    opacity: 0.7;
  }

  h1 {
    font-size: clamp(52px, 16vw, 80px);
  }

  .hero-actions,
  .hero-metrics,
  .timeline,
  .tag-grid,
  .card-grid,
  .serum-grid,
  .partner-grid,
  .audience-panel ul,
  .support-list,
  .qr-row {
    grid-template-columns: 1fr;
    max-width: 360px;
  }

  .qr-card {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 18px;
    align-items: center;
    text-align: left;
  }

  .qr-meta {
    margin-top: 0;
    align-items: flex-start;
  }

  .qr-platform {
    margin-bottom: 4px;
  }

  .qr-divider {
    gap: 12px;
  }

  .qr-line {
    flex-basis: 40px;
  }

  .hero-actions .btn,
  .contact-card .btn {
    width: 100%;
  }

  .hero-metrics {
    padding-top: 24px;
    margin-top: 32px;
  }

  .hero-scroll {
    display: none;
  }

  /* === 品牌故事区手机端适配 === */
  .brand-story {
    padding: clamp(70px, 14vw, 100px) 18px;
  }

  /* 隐藏部分背景装饰，避免手机端视觉杂乱 */
  .bg-watermark {
    font-size: clamp(120px, 28vw, 200px);
    opacity: 0.05;
  }
  .bg-watermark.sub {
    display: none;
  }
  .bg-ring.ring-1 {
    width: 240px;
    height: 240px;
    top: -60px;
    right: -60px;
    opacity: 0.35;
  }
  .bg-ring.ring-2,
  .bg-ring.ring-3 {
    display: none;
  }
  .bg-glow.glow-1 {
    width: 220px;
    height: 220px;
    filter: blur(60px);
    opacity: 0.7;
  }
  .bg-glow.glow-2 {
    display: none;
  }
  .bg-line {
    display: none;
  }

  /* 标题区缩距 */
  .brand-story-intro {
    margin-bottom: 56px;
  }
  .brand-story-intro h2 {
    font-size: clamp(22px, 6.5vw, 28px);
    line-height: 1.45;
  }
  .brand-story-intro .intro-sub {
    font-size: 12px;
    letter-spacing: 0.14em;
    margin-top: 16px;
  }

  /* 章节卡容器紧凑化 */
  .story-chapters {
    gap: 36px;
    margin-bottom: 72px;
  }

  /* 章节卡 - 改为顶部编号布局 */
  .chapter {
    padding: 36px 22px 32px;
  }

  /* 编号区从左侧绝对定位 → 改为顶部 inline 布局 */
  .chapter-mark {
    position: static;
    width: auto;
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    text-align: left;
  }
  .chapter-num {
    font-size: 32px;
  }
  .chapter-label {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    margin: 0;
    font-size: 10px;
    letter-spacing: 0.18em;
  }

  /* 章节内文本紧凑化 */
  .chapter-lead {
    font-size: 15px;
    line-height: 1.95;
    margin-bottom: 24px;
  }
  .chapter-quote {
    padding: 22px 24px 12px;
  }
  .chapter-quote .quote-mark {
    font-size: 56px;
    top: -16px;
  }
  .chapter-quote p {
    font-size: 14px;
    line-height: 1.8;
  }
  .chapter-quote p br {
    display: none;
  }
  .chapter-shift {
    font-size: 11px;
    margin-bottom: 20px;
  }
  .chapter-pull {
    padding: 24px 18px;
    margin-bottom: 24px;
  }
  .chapter-pull span {
    font-size: clamp(17px, 5vw, 20px);
    line-height: 1.6;
  }
  .chapter-text {
    font-size: 14px;
    line-height: 1.95;
    margin-bottom: 20px;
  }
  .chapter-centerpiece {
    padding: 28px 12px;
    margin-bottom: 24px;
  }
  .centerpiece-title {
    font-size: clamp(24px, 7vw, 32px);
    padding: 0 36px;
    letter-spacing: 0.1em;
  }
  .centerpiece-ornament {
    width: 24px;
  }
  .centerpiece-eyebrow {
    font-size: 11px !important;
    letter-spacing: 0.18em;
  }

  /* 签名区紧凑 */
  .chapter-signature {
    margin-top: 24px;
    padding-top: 24px;
  }
  .chapter-signature p {
    font-size: 14px;
    line-height: 1.85;
  }
  .chapter-signature p br {
    display: inline;
    content: ' ';
  }

  /* 卖点区紧凑 */
  .brand-selling-points {
    padding-top: 56px;
  }
  .selling-points-title {
    font-size: clamp(18px, 5vw, 22px);
  }
  .selling-points-summary {
    font-size: 12px;
    line-height: 1.7;
    margin-bottom: 36px;
    padding: 0 8px;
  }
  .selling-grid {
    gap: 16px;
  }
  .selling-grid article {
    padding: 28px 22px 24px;
  }
  .selling-num {
    width: 38px;
    height: 38px;
    font-size: 13px;
    margin-bottom: 14px;
  }
  .selling-grid article h4 {
    font-size: 15px;
    margin-bottom: 8px;
  }
  .selling-grid article p {
    font-size: 12px;
    line-height: 1.7;
  }

  .section {
    padding: 64px 18px;
  }

  .price-card {
    padding: 28px 20px;
  }

  footer {
    flex-direction: column;
    text-align: center;
  }

  footer .footer-beian {
    justify-content: center;
  }
}