/* ============================================
   百草藏 - 藏黄精溯源系统 CSS v2
   设计风格：浓郁藏式 + 高端天然健康品
   ============================================ */

:root {
  /* 藏式主色调 - 浓烈、温暖、神圣 */
  --tibetan-red: #B5291A;        /* 藏红 - 正红 */
  --tibetan-gold: #C9972B;       /* 酥油金 - 暖金 */
  --tibetan-gold-light: #E8C068; /* 浅金 */
  --tibetan-blue: #1E4D78;       /* 藏青 - 深蓝 */
  --tibetan-brown: #5C3D2E;      /* 藏褐 */
  --tibetan-charcoal: #1A1612;   /* 炭黑 */
  --tibetan-cream: #F5EDE0;      /* 藏纸色 */
  --tibetan-warm-white: #FBF7F0; /* 暖白 */
  --tibetan-dark: #2C2419;        /* 深褐 */

  /* 功能色 */
  --success: #4A7C3F;             /* 高原绿 */
  --text-dark: #1A1612;
  --text-light: #F5EDE0;
  --text-muted: rgba(245,237,224,0.6);

  /* 渐变 */
  --gradient-tibetan: linear-gradient(135deg, #B5291A 0%, #C9972B 50%, #5C3D2E 100%);
  --gradient-gold: linear-gradient(135deg, #C9972B 0%, #E8C068 100%);
  --gradient-hero: linear-gradient(180deg, rgba(26,22,18,0.2) 0%, rgba(26,22,18,0.7) 100%);
  --gradient-section-plant: linear-gradient(160deg, #FBF7F0 0%, #F5EDE0 50%, #E8DFD0 100%);
  --gradient-section-harvest: linear-gradient(160deg, #5C3D2E 0%, #2C2419 100%);
  --gradient-section-processing: linear-gradient(160deg, #F5EDE0 0%, #E8DFD0 100%);
  --gradient-nfc: linear-gradient(160deg, #1A1612 0%, #2C2419 50%, #1E4D78 100%);

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: 'Inter', -apple-system, sans-serif;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-serif);
  background-color: var(--tibetan-charcoal);
  color: var(--text-dark);
  line-height: 1.9;
  overflow-x: hidden;
}

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

/* ============================================
   Tibetan Decorative Elements
   ============================================ */

/* 藏式装饰纹样 - 用CSS绘制的八吉祥/几何纹样 */
.tibetan-pattern {
  position: relative;
}

.tibetan-pattern::before,
.tibetan-pattern::after {
  content: '◆ ◇ ◆ ◇ ◆ ◇ ◆';
  position: absolute;
  left: 0;
  right: 0;
  font-size: 0.5rem;
  color: var(--tibetan-gold);
  letter-spacing: 1rem;
  opacity: 0.4;
}

.tibetan-pattern::before { top: -0.5rem; }
.tibetan-pattern::after { bottom: -0.5rem; }

/* 藏式边框 - 传统边饰 */
.tibetan-border-frame {
  position: relative;
  padding: 2rem;
}

.tibetan-border-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--tibetan-gold);
  opacity: 0.3;
  pointer-events: none;
}

.tibetan-border-frame::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid var(--tibetan-gold);
  opacity: 0.2;
  pointer-events: none;
}

/* 藏式角饰 */
.tibetan-corner {
  position: absolute;
  width: 40px;
  height: 40px;
  border-color: var(--tibetan-gold);
  border-style: solid;
  opacity: 0.6;
}

.tibetan-corner.top-left {
  top: 0; left: 0;
  border-width: 3px 0 0 3px;
}

.tibetan-corner.top-right {
  top: 0; right: 0;
  border-width: 3px 3px 0 0;
}

.tibetan-corner.bottom-left {
  bottom: 0; left: 0;
  border-width: 0 0 3px 3px;
}

.tibetan-corner.bottom-right {
  bottom: 0; right: 0;
  border-width: 0 3px 3px 0;
}

/* 藏式条纹 - 祈祷旗效果 */
.prayer-flags {
  display: flex;
  justify-content: center;
  gap: 0;
  margin: 1.5rem 0;
  overflow: hidden;
}

.prayer-flag {
  width: 8px;
  height: 50px;
  transform-origin: top center;
}

.prayer-flag:nth-child(5n+1) { background: var(--tibetan-blue); transform: rotate(-3deg); }
.prayer-flag:nth-child(5n+2) { background: var(--tibetan-gold); transform: rotate(-1deg); }
.prayer-flag:nth-child(5n+3) { background: var(--tibetan-red); transform: rotate(1deg); }
.prney-flag:nth-child(5n+4) { background: var(--tibetan-cream); transform: rotate(3deg); }
.prayer-flag:nth-child(5n+5) { background: var(--success); transform: rotate(5deg); }

.prayer-flag:nth-child(odd) { animation: flagWave 3s ease-in-out infinite; }
.prayer-flag:nth-child(even) { animation: flagWave 3s ease-in-out infinite reverse; animation-delay: 0.5s; }

@keyframes flagWave {
  0%, 100% { transform: rotate(var(--base-rotate, 0deg)) scaleY(1); }
  50% { transform: rotate(calc(var(--base-rotate, 0deg) + 5deg)) scaleY(1.05); }
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2.5rem;
  background: linear-gradient(to bottom, rgba(26,22,18,0.95) 0%, transparent 100%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201,151,43,0.15);
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.2em;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.brand-sub {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  color: var(--tibetan-gold);
  letter-spacing: 0.4em;
  text-transform: uppercase;
}

.nav-batch {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--text-light);
  background: rgba(201,151,43,0.15);
  padding: 0.5rem 1.2rem;
  border-radius: 2rem;
  border: 1px solid rgba(201,151,43,0.3);
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
}

.nav-batch:hover {
  background: rgba(201,151,43,0.25);
  border-color: var(--tibetan-gold);
}

/* ============================================
   Hero Section
   ============================================ */
.section-hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

/* 藏式纹理叠加 */
.hero-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(181,41,26,0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(201,151,43,0.1) 0%, transparent 50%);
  pointer-events: none;
}

/* 藏式几何纹 - 右上角装饰 */
.hero-geometric {
  position: absolute;
  top: 80px;
  right: 40px;
  width: 200px;
  height: 200px;
  opacity: 0.15;
}

.hero-geometric::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--tibetan-gold);
  transform: rotate(45deg);
}

.hero-geometric::after {
  content: '';
  position: absolute;
  inset: 20px;
  border: 1px solid var(--tibetan-gold);
  transform: rotate(45deg);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--text-light);
  padding: 2rem;
}

/* 顶部藏式角饰 */
.tibetan-corner.top-left,
.tibetan-corner.top-right {
  position: absolute;
  width: 60px;
  height: 60px;
}

.tibetan-corner.top-left { top: 2rem; left: 2rem; border-width: 4px 0 0 4px; }
.tibetan-corner.top-right { top: 2rem; right: 2rem; border-width: 4px 4px 0 0; }

/* 祈祷旗横条 */
.hero-prayer {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-bottom: 2.5rem;
}

.hero-prayer span {
  display: block;
  width: 30px;
  height: 4px;
  border-radius: 2px;
}

.hero-prayer span:nth-child(1) { background: #1E4D78; }
.hero-prayer span:nth-child(2) { background: #C9972B; }
.hero-prayer span:nth-child(3) { background: #B5291A; }
.hero-prayer span:nth-child(4) { background: #F5EDE0; }
.hero-prayer span:nth-child(5) { background: #4A7C3F; }

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  margin-bottom: 1.2rem;
  text-shadow: 0 4px 30px rgba(0,0,0,0.6);
  background: linear-gradient(180deg, #F5EDE0 0%, #C9972B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  font-weight: 300;
  letter-spacing: 0.5em;
  color: rgba(245,237,224,0.85);
  text-transform: uppercase;
  margin-bottom: 3rem;
}

.hero-location {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--tibetan-gold);
  letter-spacing: 0.3em;
  padding: 0.8rem 2rem;
  border: 1px solid rgba(201,151,43,0.4);
  background: rgba(201,151,43,0.1);
  margin-bottom: 3rem;
}

.hero-location::before {
  content: '◈';
  font-size: 0.6rem;
}

.scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.scroll-hint span {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: rgba(245,237,224,0.5);
  text-transform: uppercase;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(201,151,43,0.5);
  border-radius: 12px;
  position: relative;
}

.scroll-mouse::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--tibetan-gold);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0%, 100% { opacity: 0; transform: translateX(-50%) translateY(0); }
  50% { opacity: 1; transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   Section Base
   ============================================ */
.section {
  position: relative;
  padding: var(--space-2xl) 0;
}

.section-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.section-inner.reverse {
  direction: rtl;
}

.section-inner.reverse > * {
  direction: ltr;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.12em;
  margin-bottom: 1.5rem;
  position: relative;
}

/* 标题左侧藏式竖条装饰 */
.section-title::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-tibetan);
  border-radius: 2px;
}

.section-title.light {
  color: var(--text-light);
}

.section-title.light::before {
  background: var(--gradient-gold);
}

.title-decoration {
  width: 80px;
  height: 3px;
  background: var(--gradient-gold);
  margin-bottom: 2rem;
  position: relative;
}

.title-decoration::before {
  content: '◆';
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6rem;
  color: var(--tibetan-gold);
}

.section-desc {
  font-size: 1.05rem;
  line-height: 2.1;
  color: var(--text-dark);
  opacity: 0.85;
  margin-bottom: 2.5rem;
}

/* ============================================
   Section: Planting
   ============================================ */
.section-plant {
  background: var(--gradient-section-plant);
  position: relative;
  overflow: hidden;
}

/* 背景藏式纹理 */
.section-plant::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 40px,
      rgba(181,41,26,0.03) 40px,
      rgba(181,41,26,0.03) 41px
    );
  pointer-events: none;
}

.plant-visual {
  position: relative;
}

.plant-img {
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(44,36,22,0.2);
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.plant-img:hover {
  transform: scale(1.03);
}

.plant-badge {
  position: absolute;
  bottom: -2rem;
  right: -2rem;
  background: var(--tibetan-charcoal);
  color: var(--text-light);
  padding: 1.5rem 2rem;
  text-align: center;
  border: 2px solid var(--tibetan-gold);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.badge-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--tibetan-gold);
  margin-bottom: 0.5rem;
}

.badge-val {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.plant-stats {
  display: flex;
  gap: 3rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(201,151,43,0.2);
  transition: all 0.3s ease;
}

.stat-item:hover {
  background: rgba(201,151,43,0.1);
  border-color: var(--tibetan-gold);
  transform: translateY(-4px);
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--tibetan-red);
  line-height: 1;
}

.stat-unit {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--tibetan-red);
  opacity: 0.7;
  margin-left: 0.3rem;
}

.stat-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dark);
  opacity: 0.6;
  margin-top: 0.5rem;
}

/* ============================================
   Section: Harvest
   ============================================ */
.section-harvest {
  background: var(--gradient-section-harvest);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

/* 左侧藏式圆形装饰 */
.section-harvest::before {
  content: '';
  position: absolute;
  left: -100px;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
  height: 400px;
  border: 2px solid rgba(201,151,43,0.1);
  border-radius: 50%;
}

.section-harvest::after {
  content: '';
  position: absolute;
  left: -50px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  height: 300px;
  border: 1px solid rgba(201,151,43,0.15);
  border-radius: 50%;
}

.section-harvest .section-title {
  color: var(--text-light);
}

.section-harvest .section-desc {
  color: var(--text-muted);
}

.harvest-img {
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.harvest-img:hover {
  transform: scale(1.03) rotate(-1deg);
}

/* Timeline - 藏式节点 */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--tibetan-gold), transparent);
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  background: var(--tibetan-charcoal);
  border: 3px solid var(--tibetan-gold);
  border-radius: 50%;
}

.timeline-content {
  display: flex;
  flex-direction: column;
}

.timeline-title {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--tibetan-gold);
  opacity: 0.8;
}

.timeline-val {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-light);
}

/* ============================================
   Section: Processing
   ============================================ */
.section-processing {
  background: var(--gradient-section-processing);
  position: relative;
  overflow: hidden;
}

.section-processing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, rgba(92,61,46,0.05) 0%, transparent 100%);
  pointer-events: none;
}

.process-img {
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(44,36,22,0.18);
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.process-img:hover {
  transform: scale(1.03);
}

/* 工序步骤 - 藏式药杵造型 */
.process-steps {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.2rem 1rem;
  background: var(--tibetan-warm-white);
  border: 2px solid rgba(201,151,43,0.3);
  min-width: 90px;
  position: relative;
  transition: all 0.3s ease;
}

.step::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--tibetan-red);
  border-radius: 0 0 3px 3px;
}

.step:hover {
  border-color: var(--tibetan-gold);
  transform: translateY(-6px);
  box-shadow: 0 10px 30px rgba(201,151,43,0.2);
}

.step-num {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--tibetan-gold);
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.step-name {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--text-dark);
  text-align: center;
}

.step-arrow {
  width: 25px;
  height: 2px;
  background: var(--tibetan-gold);
  flex-shrink: 0;
  position: relative;
  opacity: 0.5;
}

.step-arrow::after {
  content: '›';
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--tibetan-gold);
}

/* ============================================
   Section: Video
   ============================================ */
.section-video {
  background: var(--gradient-section-plant);
  padding: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.video-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.video-header {
  margin-bottom: 2.5rem;
}

.video-wrapper {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(44,36,22,0.25), 0 0 0 1px rgba(201,151,43,0.2);
  background: #000;
}

.video-player {
  width: 100%;
  display: block;
  max-height: 500px;
  object-fit: contain;
  background: #000;
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: all 0.3s ease;
  opacity: 0.9;
}

.video-play-btn:hover {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.video-play-btn.hidden {
  opacity: 0;
  pointer-events: none;
}

.video-caption {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-dark);
  opacity: 0.5;
  margin-top: 1.2rem;
  text-transform: uppercase;
}

/* ============================================
   Section: Quality
   ============================================ */
.section-quality {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.quality-bg {
  position: absolute;
  inset: 0;
}

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

.quality-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(26,22,18,0.2) 0%,
    rgba(44,36,25,0.18) 50%,
    rgba(30,77,120,0.15) 100%
  );
}

/* 藏式曼陀罗装饰 */
.quality-overlay::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border: 1px solid rgba(201,151,43,0.08);
  border-radius: 50%;
}

.quality-overlay::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  border: 1px solid rgba(201,151,43,0.1);
  border-radius: 50%;
}

.quality-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 3rem;
}

.quality-header {
  margin-bottom: 4rem;
}

.quality-header .section-title {
  color: var(--text-light);
}

.quality-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  width: 100%;
  margin-bottom: 4rem;
}

.qc-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,151,43,0.25);
  padding: 2.5rem 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.qc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-gold);
  transform: scaleX(0);
  transition: transform 0.5s ease;
}

.qc-card:hover {
  transform: translateY(-12px);
  border-color: var(--tibetan-gold);
  background: rgba(255,255,255,0.08);
}

.qc-card:hover::before {
  transform: scaleX(1);
}

.qc-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  border: 2px solid var(--tibetan-gold);
  border-radius: 50%;
  position: relative;
  transition: all 0.3s ease;
}

.qc-card:hover .qc-icon {
  background: rgba(201,151,43,0.15);
  transform: scale(1.1);
}

.qc-icon::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.5rem;
  color: var(--tibetan-gold);
  font-weight: bold;
}

.qc-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 0.8rem;
  letter-spacing: 0.1em;
}

.qc-desc {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.qc-status {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--success);
  background: rgba(74,124,63,0.2);
  padding: 0.4rem 1.2rem;
  border: 1px solid rgba(74,124,63,0.4);
  transition: all 0.3s ease;
}

.qc-card:hover .qc-status {
  background: rgba(74,124,63,0.3);
}

.qc-report {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: rgba(245,237,224,0.35);
  letter-spacing: 0.1em;
}

/* ============================================
   Section: NFC Verification
   ============================================ */
.section-nfc {
  background: var(--gradient-nfc);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) 2rem;
  position: relative;
  overflow: hidden;
}

/* 背景藏式圆环 */
.section-nfc::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  border: 1px solid rgba(201,151,43,0.05);
  border-radius: 50%;
  pointer-events: none;
}

.nfc-container {
  display: flex;
  align-items: center;
  gap: 5rem;
  margin-bottom: 4rem;
  position: relative;
  z-index: 2;
}

.nfc-visual {
  position: relative;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nfc-chip {
  position: relative;
  width: 140px;
  height: 140px;
  cursor: pointer;
}

.chip-ring {
  position: absolute;
  inset: 0;
  border: 3px solid var(--tibetan-gold);
  border-radius: 50%;
  animation: nfcPulse 2.5s ease-in-out infinite;
  transition: all 0.3s ease;
}

.chip-ring::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(201,151,43,0.5);
  border-radius: 50%;
}

.chip-ring::after {
  content: '';
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(201,151,43,0.3);
  border-radius: 50%;
}

.chip-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background: var(--gradient-gold);
  border-radius: 50%;
  box-shadow: 0 0 40px rgba(201,151,43,0.6);
  transition: all 0.3s ease;
}

.nfc-chip:hover .chip-ring {
  border-color: #E8C068;
}

.nfc-chip:hover .chip-core {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 0 60px rgba(201,151,43,0.8);
}

@keyframes nfcPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.06); opacity: 0.85; }
}

.nfc-chip.touched .chip-ring {
  animation: nfcSuccess 0.6s ease-out forwards;
}

.nfc-chip.touched .chip-core {
  background: var(--success);
  box-shadow: 0 0 50px rgba(74,124,63,0.7);
}

@keyframes nfcSuccess {
  0% { transform: scale(1); }
  40% { transform: scale(1.25); border-color: var(--success); }
  100% { transform: scale(1); border-color: var(--tibetan-gold); }
}

.nfc-text {
  text-align: left;
  max-width: 400px;
}

.nfc-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.nfc-id {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--tibetan-gold);
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  padding: 0.8rem 1.2rem;
  background: rgba(201,151,43,0.1);
  border-left: 3px solid var(--tibetan-gold);
}

.nfc-result {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(201,151,43,0.2);
  transition: all 0.5s ease;
}

.nfc-result.verified {
  background: rgba(74,124,63,0.12);
  border-color: var(--success);
}

.result-icon {
  width: 30px;
  height: 30px;
  border: 2px solid var(--tibetan-gold);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.nfc-result.verified .result-icon {
  border-color: var(--success);
  background: rgba(74,124,63,0.2);
}

.result-icon::after {
  content: '✕';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.8rem;
  color: var(--tibetan-gold);
  transition: all 0.3s ease;
}

.nfc-result.verified .result-icon::after {
  content: '✓';
  color: var(--success);
}

.result-text {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.nfc-result.verified .result-text {
  color: var(--success);
}

/* Batch Info */
.batch-info {
  display: flex;
  gap: 4rem;
  padding: 2.5rem 4rem;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(201,151,43,0.2);
  position: relative;
  z-index: 2;
}

.batch-info::before,
.batch-info::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--tibetan-gold);
  border-style: solid;
  opacity: 0.4;
}

.batch-info::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.batch-info::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.batch-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.batch-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--tibetan-gold);
  opacity: 0.7;
}

.batch-val {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-light);
  letter-spacing: 0.1em;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--tibetan-charcoal);
  color: var(--text-light);
  text-align: center;
  padding: 5rem 2rem;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 2px;
  background: var(--gradient-gold);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text-light);
  margin-bottom: 0.8rem;
}

.footer-desc {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  color: var(--tibetan-gold);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: rgba(245,237,224,0.25);
  letter-spacing: 0.1em;
}

/* ============================================
   Animations - Initial Hidden States
   ============================================ */
.gsap-init-hidden {
  opacity: 0;
  transform: translateY(50px);
}

.gsap-init-hidden-left {
  opacity: 0;
  transform: translateX(-80px);
}

.gsap-init-hidden-right {
  opacity: 0;
  transform: translateX(80px);
}

/* ============================================
   Responsive - Tablet (768px - 1100px)
   ============================================ */
@media (max-width: 1100px) {
  :root {
    --space-xl: 4rem;
    --space-2xl: 6rem;
    font-size: 15px;
  }

  .section-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 0 2rem;
  }

  .section-inner.reverse {
    direction: ltr;
  }

  .section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
  }

  .section-title::before {
    display: none;
  }

  .section-desc {
    font-size: 1.1rem;
    line-height: 1.95;
  }

  .quality-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .qc-card {
    padding: 1.5rem 1rem;
  }

  .qc-title {
    font-size: 1.15rem;
  }

  .qc-desc {
    font-size: 0.9rem;
  }

  .nfc-container {
    flex-direction: column;
    text-align: center;
    gap: 2.5rem;
    padding: 0 1.5rem;
  }

  .nfc-text {
    text-align: center;
    max-width: 100%;
  }

  .nfc-id {
    text-align: center;
  }

  .batch-info {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 1.5rem 2rem;
    justify-content: center;
  }

  .plant-stats {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .stat-item {
    padding: 0.8rem;
  }

  .stat-num {
    font-size: 2.2rem;
  }

  .stat-label {
    font-size: 0.7rem;
  }

  .process-steps {
    justify-content: center;
    gap: 0.5rem;
  }

  .step {
    min-width: 75px;
    padding: 0.8rem 0.5rem;
  }

  .step-name {
    font-size: 0.9rem;
  }

  .hero-geometric {
    width: 120px;
    height: 120px;
    top: 60px;
    right: 20px;
  }

  .tibetan-corner.top-left,
  .tibetan-corner.top-right {
    width: 40px;
    height: 40px;
  }

  .quality-overlay::before,
  .quality-overlay::after {
    display: none;
  }
}

/* ============================================
   Responsive - Mobile (max-width: 768px)
   ============================================ */
@media (max-width: 768px) {
  :root {
    --space-xl: 3rem;
    --space-2xl: 4rem;
    font-size: 14px;
  }

  /* Navigation */
  .nav {
    padding: 1rem 1.5rem;
  }

  .nav-brand {
    flex-direction: column;
    gap: 0.3rem;
  }

  .brand-name {
    font-size: 1.4rem;
  }

  .brand-sub {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
  }

  .nav-batch {
    font-size: 0.95rem;
    padding: 0.7rem 1.4rem;
    max-width: 220px;
  }

  /* Hero */
  .section-hero {
    min-height: 100svh;
  }

  .hero-content {
    padding: 1.5rem;
  }

  .hero-prayer {
    margin-bottom: 2rem;
  }

  .hero-prayer span {
    width: 30px;
    height: 5px;
  }

  .hero-title {
    font-size: clamp(3rem, 18vw, 5rem);
    letter-spacing: 0.12em;
    margin-bottom: 1rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    letter-spacing: 0.25em;
    margin-bottom: 2.5rem;
  }

  .hero-location {
    font-size: 0.9rem;
    padding: 0.8rem 1.8rem;
    letter-spacing: 0.2em;
  }

  .hero-geometric {
    width: 100px;
    height: 100px;
    top: 60px;
    right: 15px;
  }

  .tibetan-corner.top-left,
  .tibetan-corner.top-right {
    width: 40px;
    height: 40px;
  }

  .scroll-hint {
    bottom: 2.5rem;
  }

  .scroll-hint span {
    font-size: 1rem;
  }

  .scroll-mouse {
    width: 26px;
    height: 40px;
    border-width: 2px;
  }

  /* Sections */
  .section {
    padding: var(--space-xl) 0;
  }

  .section-inner {
    padding: 0 1.5rem;
    gap: 2.5rem;
  }

  .section-title {
    font-size: clamp(2rem, 8vw, 2.8rem);
    margin-bottom: 1.2rem;
    letter-spacing: 0.08em;
  }

  .title-decoration {
    width: 60px;
    height: 3px;
    margin-bottom: 1.5rem;
  }

  .title-decoration::before {
    display: none;
  }

  .section-desc {
    font-size: 1.2rem;
    line-height: 2;
    margin-bottom: 2rem;
  }

  /* Plant */
  .plant-visual {
    margin-bottom: 1.5rem;
  }

  .plant-img {
    border-radius: 8px;
  }

  .plant-badge {
    position: static;
    display: inline-block;
    margin-top: 1.5rem;
    padding: 1rem 1.8rem;
  }

  .badge-label {
    font-size: 1rem;
  }

  .badge-val {
    font-size: 1.8rem;
  }

  .plant-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .stat-item {
    padding: 1rem 0.8rem;
    align-items: center;
    text-align: center;
  }

  .stat-num {
    font-size: 2.2rem;
  }

  .stat-unit {
    font-size: 1rem;
  }

  .stat-label {
    font-size: 1rem;
    margin-top: 0.5rem;
  }

  /* Harvest */
  .harvest-img {
    border-radius: 8px;
  }

  .timeline {
    gap: 1.5rem;
    padding-left: 2rem;
  }

  .timeline-title {
    font-size: 1.05rem;
  }

  .timeline-val {
    font-size: 1.35rem;
  }

  /* Processing */
  .process-img {
    border-radius: 8px;
  }

  .process-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .step {
    min-width: unset;
    width: 100%;
    padding: 1rem 0.8rem;
  }

  .step-arrow {
    display: none;
  }

  .step::before {
    width: 18px;
    height: 3px;
  }

  .step-num {
    font-size: 0.95rem;
  }

  .step-name {
    font-size: 1.2rem;
  }

  /* Quality */
  .section-quality {
    min-height: auto;
    padding: var(--space-xl) 0;
    display: block;
  }

  .section-bg {
    position: relative;
    height: 250px;
  }

  .quality-bg-img {
    object-position: center 30%;
  }

  .quality-overlay {
    display: none;
  }

  .quality-inner {
    padding: 0 1.5rem;
    transform: translateY(-2.5rem);
  }

  .quality-header {
    margin-bottom: 2rem;
  }

  .quality-cards {
    grid-template-columns: 1fr;
    gap: 1.2rem;
    margin-bottom: 2rem;
  }

  .qc-card {
    padding: 2rem 1.5rem;
  }

  .qc-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.2rem;
  }

  .qc-icon::after {
    font-size: 1.5rem;
  }

  .qc-title {
    font-size: 1.3rem;
  }

  .qc-desc {
    font-size: 1.05rem;
    margin-bottom: 1.2rem;
  }

  .qc-status {
    font-size: 0.8rem;
    padding: 0.5rem 1.2rem;
  }

  /* NFC */
  .section-nfc {
    min-height: auto;
    padding: var(--space-xl) 1.5rem;
  }

  .nfc-container {
    gap: 2.5rem;
    margin-bottom: 3rem;
  }

  .nfc-visual {
    width: 150px;
    height: 150px;
  }

  .nfc-chip {
    width: 120px;
    height: 120px;
  }

  .chip-ring::before {
    inset: 10px;
  }

  .chip-ring::after {
    inset: 20px;
  }

  .chip-core {
    width: 42px;
    height: 42px;
  }

  .nfc-desc {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }

  .nfc-id {
    font-size: 0.85rem;
    padding: 0.7rem 1rem;
    margin-bottom: 1.5rem;
  }

  .nfc-result {
    padding: 0.9rem 1.2rem;
    gap: 0.8rem;
  }

  .result-icon {
    width: 28px;
    height: 28px;
  }

  .result-text {
    font-size: 0.95rem;
  }

  .batch-info {
    flex-direction: column;
    gap: 1.5rem;
    padding: 2rem;
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
  }

  .batch-label {
    font-size: 1rem;
  }

  .batch-val {
    font-size: 1.35rem;
  }

  /* Footer */
  .footer {
    padding: 4rem 1.5rem;
  }

  .footer-logo {
    font-size: 2.2rem;
  }

  .footer-desc {
    font-size: 0.85rem;
    letter-spacing: 0.25em;
  }

  .footer-copy {
    font-size: 0.95rem;
  }

  /* Video */
  .section-video {
    padding: var(--space-lg) 0;
  }

  .video-container {
    padding: 0 1.5rem;
  }

  .video-header {
    margin-bottom: 2rem;
  }

  .video-wrapper {
    border-radius: 10px;
  }

  .video-player {
    max-height: 300px;
  }

  .video-play-btn svg {
    width: 60px;
    height: 60px;
  }

  .video-caption {
    font-size: 1.05rem;
    margin-top: 1.2rem;
  }
}

/* ============================================
   Responsive - Small Mobile (max-width: 380px)
   ============================================ */
@media (max-width: 380px) {
  :root {
    font-size: 13px;
  }

  .hero-title {
    font-size: 2.2rem;
    letter-spacing: 0.1em;
  }

  .hero-subtitle {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
  }

  .plant-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .stat-num {
    font-size: 1.4rem;
  }

  .process-steps {
    gap: 0.4rem;
  }

  .step {
    padding: 0.6rem 0.3rem;
  }
}