/* 思湖文化 · 数钥通官网样式表
   基于品牌视觉规范：主色 #5C9291 龙泉梅子青 */
:root {
  --primary: #5C9291;
  --primary-dark: #3D7A6A;
  --primary-light: #8BB8B7;
  --cream: #F5F3F0;
  --gold: #C49A6C;
  --gold-light: #D4B28A;
  --ink: #2C2C2C;
  --gray-900: #333333;
  --gray-700: #666666;
  --gray-500: #999999;
  --gray-200: #E5E5E5;
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --max-width: 1200px;
  --nav-height: 72px;
  --nav-height-mobile: 64px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "思源宋体", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "思源黑体", system-ui, sans-serif;
  --font-en: "Cormorant Garamond", "Playfair Display", Georgia, serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5 { font-family: var(--font-serif); font-weight: 700; line-height: 1.4; color: var(--ink); }
p { margin-bottom: 1em; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul { padding-left: 1.5em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  height: var(--nav-height);
}
/* 现代浏览器启用毛玻璃效果（不影响华为等老内核） */
@supports (backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px)) {
  .site-header { background: rgba(255,255,255,0.96); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}
.brand img {
  height: 48px;
  width: 48px;
  object-fit: contain;
  border-radius: 8px;
}
.brand-text .name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  display: block;
  line-height: 1.2;
}
.brand-text .sub {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--gray-500);
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 15px;
  color: var(--gray-900);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width .3s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary-dark);
}
.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}
.nav-kf-icon {
  width: 15px;
  height: 15px;
  margin-right: 4px;
  vertical-align: -2px;
}
.nav-cta { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  color: var(--ink);
  -webkit-tap-highlight-color: rgba(0,0,0,0.05);
}
.menu-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all .25s ease;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: var(--font-sans);
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-gold {
  background: var(--gold);
  color: var(--white);
}
.btn-gold:hover {
  background: #B08A5A;
  color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-ghost:hover {
  background: var(--white);
  color: var(--primary);
}
.btn-celadon {
  background: var(--cream);
  color: var(--primary-dark);
}
.btn-celadon:hover {
  background: var(--primary);
  color: var(--white);
}

/* ===== Hero Carousel ===== */
.hero {
  position: relative;
  overflow: hidden;
}
.hero-stage {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
}
.hero-carousel {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 560px;
  height: auto;
  background: var(--gray-900);
}
.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1), transform 6s linear;
  transform: scale(1.05);
}
.hero-slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(26,42,36,0.82) 0%, rgba(26,42,36,0.5) 50%, rgba(26,42,36,0.15) 100%),
    linear-gradient(180deg, rgba(26,42,36,0.35) 0%, rgba(26,42,36,0) 35%, rgba(26,42,36,0) 65%, rgba(26,42,36,0.45) 100%);
}
.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  width: 100%;
  padding-top: 32px;
  padding-bottom: 96px; /* 为底部 dots 预留空间，避免极端情况覆盖 */
}
.hero-left {
  max-width: 640px;
  color: var(--white);
  padding-left: 24px;
}
.hero-carousel .badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(255,255,255,0.14);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.18);
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 50px;
  margin-bottom: 20px;
  line-height: 1.18;
  color: var(--white);
  text-shadow: 0 2px 16px rgba(0,0,0,0.25);
}
.hero .sub {
  font-size: 18px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 32px;
  line-height: 1.75;
  text-shadow: 0 1px 8px rgba(0,0,0,0.2);
}
.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 38px;
  flex-wrap: wrap;
}
.hero-carousel .btn-primary {
  background: var(--white);
  color: var(--primary-dark);
  border-color: var(--white);
}
.hero-carousel .btn-primary:hover {
  background: var(--cream);
  border-color: var(--cream);
  color: var(--primary-dark);
}
.hero-carousel .btn-outline {
  border-color: rgba(255,255,255,0.55);
  color: var(--white);
}
.hero-carousel .btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
}
.trust-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255,255,255,0.82);
}
.trust-row span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.trust-row span::before {
  content: '✓';
  color: var(--gold);
  font-weight: 700;
}
.hero-dots {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
}
.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all .3s;
  padding: 0;
}
.hero-dots button.active,
.hero-dots button:hover {
  background: var(--gold);
  transform: scale(1.25);
}
.hero-arrow {
  position: absolute;
  z-index: 4;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.08);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .25s;
  backdrop-filter: blur(4px);
}
.hero-arrow:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.6);
}
.hero-arrow svg { width: 22px; height: 22px; }
.hero-prev { left: 24px; }
.hero-next { right: 24px; }

/* ===== Trust Bar ===== */
.trust-bar {
  flex-shrink: 0;
  background: var(--primary);
  color: var(--white);
  padding: 24px 0;
}
.trust-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.trust-item b {
  display: block;
  font-size: 18px;
  font-family: var(--font-serif);
  margin-bottom: 4px;
}
.trust-item small {
  font-size: 13px;
  opacity: .9;
  line-height: 1.5;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
}
.trust-icon {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .25s ease;
}
.trust-item:hover .trust-icon {
  background: rgba(255,255,255,0.18);
}
.trust-icon svg {
  width: 18px;
  height: 18px;
}
.trust-text b {
  margin-bottom: 3px;
  font-size: 22px;
}
.trust-text small {
  font-size: 14px;
  opacity: .72;
  line-height: 1.45;
}

/* ===== Section ===== */
.section { padding: 80px 0; }
.section.bg-white { background: var(--white); }
.section.bg-cream { background: var(--cream); }
.sec-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.h2 {
  font-size: 36px;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}
.h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gold);
  margin: 12px auto 0;
}
.sec-head p { color: var(--gray-700); font-size: 17px; }

/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* Five Guarantees: 2 cards in first row, 3 in second row */
.grid-guarantees { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.grid-guarantees .card:nth-child(1),
.grid-guarantees .card:nth-child(2) { grid-column: span 3; }
.grid-guarantees .card:nth-child(3),
.grid-guarantees .card:nth-child(4),
.grid-guarantees .card:nth-child(5) { grid-column: span 2; }

/* ===== Cards ===== */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
  border-top: 3px solid var(--gold);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.card .ico {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(92,146,145,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}
.card p { color: var(--gray-700); font-size: 15px; margin-bottom: 0; }
.value-num {
  position: absolute;
  right: 24px;
  top: 24px;
  font-family: var(--font-en);
  font-size: 48px;
  color: rgba(92,146,145,0.12);
  font-weight: 700;
  line-height: 1;
}
.card { position: relative; }

/* ===== Engine ===== */
/* ===== Three Malls ===== */
.malls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.mall-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform .3s, box-shadow .3s;
}
.mall-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.mall-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(92,146,145,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.mall-icon svg { width: 28px; height: 28px; }
.mall-label {
  display: block;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--gold);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.mall-card h3 {
  font-size: 26px;
  color: var(--primary-dark);
  margin-bottom: 14px;
}
.mall-card > p {
  color: var(--gray-700);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 24px;
}
.mall-features {
  list-style: none;
  padding: 20px 0 0 0;
  margin: 0;
  border-top: 1px solid var(--gray-200);
}
.mall-features li {
  position: relative;
  padding-left: 22px;
  color: var(--gray-700);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 10px;
}
.mall-features li:last-child { margin-bottom: 0; }
.mall-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: transparent;
}
.mall-bar {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 22px 32px;
  text-align: center;
}
.mall-bar p {
  color: var(--gray-700);
  font-size: 15px;
  margin: 0;
}
.mall-bar strong { color: var(--primary); font-weight: 600; }

/* ===== Master Cards ===== */
.master-card {
  display: block;
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
}
.master-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.master-card .ph {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--cream);
}
.master-card .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.master-card:hover .ph img { transform: scale(1.06); }
.master-card .info { padding: 22px; }
.master-card .role {
  font-size: 12px;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.titles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.title-tag {
  font-size: 12.5px;
  line-height: 1;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(92,146,145,0.10);
  border: 1px solid rgba(92,146,145,0.25);
  font-weight: 500;
  letter-spacing: .3px;
  white-space: nowrap;
}
.title-tag.top {
  color: #fff;
  background: linear-gradient(135deg, var(--gold) 0%, #b8895a 100%);
  border-color: transparent;
  font-weight: 700;
  letter-spacing: .5px;
  box-shadow: 0 5px 14px rgba(196,154,108,0.38);
}
.master-card h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.master-card p {
  font-size: 14px;
  color: var(--gray-700);
  margin-bottom: 14px;
  line-height: 1.6;
}
.master-card .more {
  font-size: 14px;
  color: var(--gold);
  font-weight: 600;
}
.master-card:hover .more { color: var(--primary-dark); }

/* ===== Certificate Features ===== */
.cert-feat {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform .3s;
}
.cert-feat:hover { transform: translateY(-4px); }
.cert-feat .ico {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(92,146,145,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.cert-feat h4 { font-size: 18px; margin-bottom: 6px; }
.cert-feat p { font-size: 14px; color: var(--gray-700); margin-bottom: 0; }

/* ===== Rights (5 certificates) ===== */
.rights-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}
.right-card {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 28px 24px;
  border-top: 3px solid var(--primary);
  transition: transform .3s, box-shadow .3s;
}
.right-card:nth-child(1),
.right-card:nth-child(2) { grid-column: span 3; }
.right-card:nth-child(3),
.right-card:nth-child(4),
.right-card:nth-child(5) { grid-column: span 2; }
.right-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.rc-top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.rc-num { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--primary); line-height: 1; }
.rc-ico {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 50%;
  background: rgba(92,146,145,.1);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.right-card h4 { font-size: 19px; margin-bottom: 10px; color: var(--gray-900); }
.right-card p { font-size: 14px; color: var(--gray-700); line-height: 1.7; margin-bottom: 14px; }
.rc-highlight {
  font-size: 13px; font-weight: 600;
  color: #8a6d3b;
  background: rgba(196,154,108,.12);
  padding: 8px 12px; border-radius: 8px;
  margin-bottom: 14px;
}
.rc-points { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.rc-points li {
  font-size: 12px; color: var(--primary-dark);
  background: rgba(92,146,145,.08);
  padding: 5px 11px; border-radius: 999px;
}
@media (max-width: 768px) {
  .rights-grid { grid-template-columns: 1fr; }
  .right-card { grid-column: auto; }
}

/* ===== Channel Advantages ===== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.adv-card {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  border-left: 4px solid var(--primary);
  transition: transform .3s, box-shadow .3s;
}
.adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.adv-card h4 { font-size: 20px; margin-bottom: 12px; color: var(--gray-900); }
.adv-card p { font-size: 15px; color: var(--gray-700); line-height: 1.8; margin-bottom: 0; }
@media (max-width: 768px) {
  .adv-grid { grid-template-columns: 1fr; }
  .adv-card { padding: 24px; }
  .adv-card h4 { font-size: 18px; }
}

/* ===== News ===== */
.news-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-card .date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
  padding: 10px;
  background: var(--cream);
  border-radius: var(--radius-md);
}
.news-card .date b {
  display: block;
  font-size: 28px;
  color: var(--primary);
  line-height: 1;
}
.news-card .date small {
  font-size: 12px;
  color: var(--gray-500);
}
.news-card h4 {
  font-size: 18px;
  margin-bottom: 8px;
  transition: color .2s;
}
.news-card:hover h4 { color: var(--primary); }
.news-card p { font-size: 14px; color: var(--gray-700); margin-bottom: 0; }
.chip {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(196,154,108,0.12);
  color: var(--gold);
  font-size: 12px;
  margin-bottom: 8px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  text-align: center;
  color: var(--white);
}
.cta-banner h2 {
  color: var(--white);
  font-size: 32px;
  margin-bottom: 14px;
}
.cta-banner p { opacity: .9; margin-bottom: 28px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .name {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--white);
  margin-bottom: 14px;
}
.footer-brand p { font-size: 14px; line-height: 1.8; margin-bottom: 0; }
.footer-top h5 {
  color: var(--white);
  font-size: 15px;
  margin-bottom: 18px;
  font-family: var(--font-sans);
  font-weight: 700;
}
.footer-top a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  padding: 6px 0;
}
.footer-top a:hover { color: var(--gold-light); }
.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: var(--gold-light); }

/* ===== Back to top ===== */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 90px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  border: none;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all .3s;
  z-index: 99;
  box-shadow: var(--shadow-md);
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(18,28,24,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 40px;
}
.lightbox.active { display: flex; }
.lightbox .lb-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  max-width: 100%;
}
.lightbox img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-sm);
  border: 3px solid rgba(255,255,255,0.12);
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(196,154,108,0.4);
  background: #111;
}
.lightbox .lb-cap {
  color: #fff;
  font-size: 17px;
  letter-spacing: .5px;
  font-family: var(--font-serif);
  padding: 9px 24px;
  border-radius: 22px;
  background: rgba(196,154,108,0.16);
  border: 1px solid rgba(196,154,108,0.4);
}
.lightbox .lb-hint {
  color: rgba(255,255,255,0.45);
  font-size: 12px;
  letter-spacing: 2px;
}
.lightbox .close {
  position: absolute;
  top: 24px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 30px;
  cursor: pointer;
  line-height: 1;
  transition: background .3s, transform .3s;
}
.lightbox .close:hover { background: rgba(196,154,108,0.45); transform: rotate(90deg); }

/* ===== Inner Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 64px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header .container {
  position: relative;
  z-index: 1;
}

/* 龙泉青瓷冰裂纹质感 · 纯 CSS 实现（不依赖图片） */
.page-header.crackle-bg::before,
.page-header.crackle-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.page-header.crackle-bg::before {
  background:
    radial-gradient(circle at 18% 28%, rgba(255,255,255,.10) 0%, transparent 42%),
    radial-gradient(circle at 82% 72%, rgba(255,255,255,.08) 0%, transparent 48%),
    radial-gradient(circle at 52% 92%, rgba(255,255,255,.06) 0%, transparent 36%),
    radial-gradient(circle at 75% 18%, rgba(255,255,255,.07) 0%, transparent 40%);
  opacity: .7;
}
.page-header.crackle-bg::after {
  background-image:
    repeating-linear-gradient(112deg, transparent 0, transparent 20px, rgba(255,255,255,.07) 20px, rgba(255,255,255,.07) 21px, transparent 21px, transparent 52px),
    repeating-linear-gradient(22deg, transparent 0, transparent 28px, rgba(255,255,255,.05) 28px, rgba(255,255,255,.05) 29px, transparent 29px, transparent 64px),
    repeating-linear-gradient(82deg, transparent 0, transparent 34px, rgba(255,255,255,.04) 34px, rgba(255,255,255,.04) 35px, transparent 35px, transparent 78px),
    repeating-linear-gradient(158deg, transparent 0, transparent 24px, rgba(255,255,255,.05) 24px, rgba(255,255,255,.05) 25px, transparent 25px, transparent 56px),
    repeating-linear-gradient(46deg, transparent 0, transparent 38px, rgba(255,255,255,.03) 38px, rgba(255,255,255,.03) 39px, transparent 39px, transparent 82px);
  opacity: .85;
}
.page-header h1 {
  color: var(--white);
  font-size: 40px;
  margin-bottom: 14px;
}
.page-header p {
  opacity: .9;
  max-width: 640px;
  margin: 0 auto;
  font-size: 17px;
}
.breadcrumb {
  font-size: 13px;
  opacity: .8;
  margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: var(--gold-light); }
.breadcrumb span { margin: 0 8px; }

/* ===== Content Blocks ===== */
.content-block {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.content-block h3 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--primary-dark);
}
.content-block p { color: var(--gray-700); }
.content-block ul { color: var(--gray-700); }
.content-block li { margin-bottom: 8px; }

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--gold) 100%);
}
.timeline-item {
  position: relative;
  padding: 24px 28px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  transition: transform .3s, box-shadow .3s;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 30px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-item .year {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(92,146,145,0.1);
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.timeline-item p { color: var(--gray-700); margin: 0; line-height: 1.7; }

/* ===== Master Detail ===== */
.master-hero {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
  background: linear-gradient(135deg, #ffffff 0%, var(--cream) 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(92,146,145,0.1);
}
.master-hero .m-portrait {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(196,154,108,0.4);
}
.master-hero .m-portrait::after {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255,255,255,0.45);
  border-radius: 8px;
  pointer-events: none;
}
.master-hero .m-portrait img {
  width: 100%;
  display: block;
}
.master-hero .tag {
  display: inline-block;
  color: var(--primary);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.master-hero h2 {
  font-size: 38px;
  margin-bottom: 14px;
  color: var(--primary-dark);
}
.master-hero .titles { margin-bottom: 20px; }
.master-hero .title-tag { font-size: 13px; padding: 8px 13px; }
.master-hero p { color: var(--gray-700); margin-bottom: 14px; line-height: 1.8; }
.master-hero .meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 26px;
}
.master-hero .meta div {
  flex: 1;
  min-width: 110px;
  text-align: center;
  padding: 16px 14px;
  background: rgba(92,146,145,0.06);
  border: 1px solid rgba(92,146,145,0.12);
  border-radius: var(--radius-md);
}
.master-hero .meta div b {
  display: block;
  color: var(--primary);
  font-size: 17px;
  margin-bottom: 4px;
}
.master-hero .meta div span { font-size: 12.5px; color: var(--gray-700); letter-spacing: .3px; }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  background: #fff;
  border: 1px solid rgba(92,146,145,0.14);
  box-shadow: 0 8px 24px rgba(26,42,36,0.08);
  transition: transform .4s, box-shadow .4s;
}
.gallery-item:hover { transform: translateY(-4px); box-shadow: 0 16px 38px rgba(26,42,36,0.16); }
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s;
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item .cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 14px 14px;
  background: linear-gradient(transparent, rgba(18,28,24,0.82));
  color: #fff;
  font-size: 14px;
  letter-spacing: .5px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s, transform .35s;
  display: flex;
  align-items: center;
  gap: 9px;
}
.gallery-item .cap::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--gold);
  flex: none;
}
.gallery-item:hover .cap { opacity: 1; transform: translateY(0); }

/* ===== Forms ===== */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--gray-700);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color .2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ===== Tables ===== */
.table-wrap { overflow-x: auto; }
.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}
.table-wrap th,
.table-wrap td {
  padding: 14px 16px;
  border: 1px solid var(--gray-200);
  text-align: left;
}
.table-wrap th {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
}
.table-wrap tr:nth-child(even) { background: var(--cream); }

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.contact-info-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(92,146,145,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-info-item h4 { margin-bottom: 6px; }
.contact-info-item p { margin-bottom: 0; font-size: 14px; color: var(--gray-700); }

/* ===== QR Contact Page ===== */
.qr-section { padding: 80px 0; }
.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 1080px;
  margin: 0 auto;
}
.qr-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 40px 36px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.qr-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.qr-card .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.qr-card .tag.gold { background: rgba(196,154,108,0.12); color: var(--gold); }
.qr-card .tag.primary { background: rgba(92,146,145,0.12); color: var(--primary); }
.qr-card .qr-frame {
  width: 240px;
  height: 240px;
  margin-bottom: 28px;
  padding: 14px;
  background: var(--cream);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.qr-card .qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: pointer;
  transition: transform .3s;
}
.qr-card .qr-frame img:hover { transform: scale(1.02); }
.qr-card h2 {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--primary-dark);
}
.qr-card .lead {
  font-size: 16px;
  color: var(--gray-700);
  margin-bottom: 24px;
  line-height: 1.7;
}
.qr-card .steps {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.qr-card .step {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--gray-700);
  background: var(--cream);
  padding: 8px 14px;
  border-radius: 999px;
}
.qr-card .step b {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-card .hint {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: auto;
}
.qr-card .hint a { color: var(--primary); }
.qr-contact-info {
  max-width: 720px;
  margin: 48px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.qr-contact-info .item {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.qr-contact-info .item h4 {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 8px;
  font-weight: 500;
}
.qr-contact-info .item p {
  font-size: 15px;
  color: var(--gray-900);
  margin: 0;
  font-weight: 600;
}

@media (max-width: 1024px) {
  .qr-grid { gap: 24px; }
  .qr-card { padding: 32px 24px; }
  .qr-card .qr-frame { width: 220px; height: 220px; }
}

@media (max-width: 768px) {
  .qr-section { padding: 48px 0; }
  .qr-grid { grid-template-columns: 1fr; gap: 24px; }
  .qr-card { padding: 32px 24px; }
  .qr-card .qr-frame { width: 200px; height: 200px; }
  .qr-card h2 { font-size: 22px; }
  .qr-card .lead { font-size: 15px; }
  .qr-card .steps { gap: 8px; }
  .qr-card .step { font-size: 12px; padding: 6px 12px; }
  .qr-contact-info { grid-template-columns: 1fr; margin-top: 32px; }
}

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 14px; }
  .nav-cta .btn-gold { padding: 8px 16px; font-size: 14px; }
}

@media (max-width: 1024px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
  .nav-cta { gap: 10px; }
  .nav-cta .btn-gold { padding: 7px 12px; font-size: 13px; }
  .hero h1 { font-size: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: var(--nav-height-mobile); }
  .site-header { height: var(--nav-height-mobile); }
  .menu-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-height-mobile);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: transform .35s ease;
    align-items: stretch;
  }
  .nav-links.open { transform: translateY(0); z-index: 1000; }
  .nav-links a {
    font-size: 16px;
    padding: 16px 4px;
    border-bottom: 1px solid var(--gray-200);
  }
  .nav-links a::after { display: none; }
  .nav-cta { display: flex; }
  .nav-cta .btn-gold { display: none; }
  /* 移动端菜单遮罩层 */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(26,42,36,0.45);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
    z-index: 999;
  }
  .nav-backdrop.show { opacity: 1; visibility: visible; }
  .hero-carousel { min-height: 640px; }
  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(26,42,36,0.55) 0%, rgba(26,42,36,0.25) 35%, rgba(26,42,36,0.35) 65%, rgba(26,42,36,0.72) 100%),
      linear-gradient(90deg, rgba(26,42,36,0.5) 0%, rgba(26,42,36,0.2) 100%);
  }
  .hero-inner { padding-top: 48px; padding-bottom: 96px; text-align: center; justify-content: center; }
  .hero-left { margin: 0 auto; padding-left: 0; }
  .hero h1 { font-size: 32px; }
  .hero .sub { font-size: 16px; }
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-carousel .btn { width: min(100%, 280px); }
  .trust-row { display: none; }
  .hero-cta { margin-bottom: 24px; }
  .hero-dots { bottom: 24px; }
  .hero-arrow { display: none; }
  .btn { width: 100%; }
  .trust-bar .container { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .trust-item b { font-size: 16px; }
  .section { padding: 56px 0; }
  .h2 { font-size: 26px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-guarantees { grid-template-columns: 1fr; }
  .grid-guarantees .card { grid-column: auto; }
  .malls { grid-template-columns: 1fr; }
  .mall-card { padding: 28px; }
  .mall-card h3 { font-size: 22px; }
  .mall-bar { padding: 18px 24px; }
  .stats { padding: 40px 24px; }
  .stats .num { font-size: 36px; }
  .news-card { flex-direction: column; }
  .news-card .date { width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px; }
  .cta-banner { padding: 44px 24px; }
  .cta-banner h2 { font-size: 24px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .page-header { padding: 48px 0 40px; }
  .page-header h1 { font-size: 28px; }
  .content-block { padding: 24px; }
  .master-hero { grid-template-columns: 1fr; }
  .master-hero h2 { font-size: 28px; }
  .master-hero .meta { justify-content: center; }
  .gallery { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .contact-grid { grid-template-columns: 1fr; }
  .to-top { right: 16px; bottom: 80px; }
  .lightbox { padding: 16px; }
}

@media (max-width: 480px) {
  .gallery { grid-template-columns: 1fr; }
  .trust-bar .container { grid-template-columns: 1fr; }
  .master-hero .meta { flex-direction: column; gap: 12px; }
  .master-hero .meta div { width: 100%; }
  .hero h1 { font-size: 26px; }
  .hero-carousel { min-height: 600px; }
}