/* =====================================================
   铭赞网络 法语网站建设 营销站
   风格:法式优雅 + 东方克制 / 极简商务
   ===================================================== */

/* ---------- 重置与基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Arial,
    "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 600; line-height: 1.3; }
p { margin: 0; }
hr { border: 0; height: 1px; background: var(--c-line); margin: 0; }

/* ---------- 设计令牌 ---------- */
:root {
  --c-bg: #F7F4EE;        /* 米白主背景 */
  --c-bg-soft: #EFE9DF;   /* 浅米色 */
  --c-bg-dark: #0E2A47;   /* 深海军蓝 */
  --c-bg-darker: #091A2D;
  --c-text: #1F2A37;      /* 主文字 */
  --c-text-soft: #4B5563; /* 次文字 */
  --c-text-light: #6B7280;/* 浅文字 */
  --c-text-on-dark: #F1ECE0;
  --c-line: #E2DCCE;     /* 描边 */
  --c-line-dark: rgba(241, 236, 224, 0.14);
  --c-gold: #C9A961;     /* 金色 */
  --c-gold-deep: #A8884A;/* 深金 */
  --c-wine: #7A2E3A;     /* 勃艮第红 */
  --c-shadow: 0 12px 40px rgba(14, 42, 71, 0.10);
  --c-shadow-hover: 0 20px 50px rgba(14, 42, 71, 0.16);
  --c-radius: 4px;
  --c-radius-lg: 10px;
  --container: 1200px;
  --pad-x: clamp(20px, 4vw, 48px);
  --header-h: 72px;
  --ease: cubic-bezier(.4,.0,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

/* ---------- 容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(14, 42, 71, 0.0);
  border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), border-color .4s var(--ease),
              box-shadow .4s var(--ease), height .4s var(--ease);
  backdrop-filter: blur(0px);
}

.site-header.is-scrolled {
  background: rgba(14, 42, 71, 0.94);
  border-bottom-color: var(--c-line-dark);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
  backdrop-filter: saturate(160%) blur(10px);
}

.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-mark {
  display: inline-flex;
  align-items: flex-start;
  font-size: 22px;
  line-height: 1;
}
.brand-cn { font-weight: 700; }
.brand-r {
  font-size: 12px;
  color: var(--c-gold);
  margin-left: 2px;
  transform: translateY(-6px);
  font-weight: 500;
}
.brand-divider {
  color: var(--c-gold);
  font-size: 18px;
  font-weight: 300;
  opacity: 0.85;
}
.brand-key {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-on-dark);
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border: 1px solid var(--c-line-dark);
  border-radius: 2px;
}

/* 主导航 */
.nav-main {
  margin-left: auto;
}
.nav-main ul {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-main a {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  color: var(--c-text-on-dark);
  font-size: 14.5px;
  letter-spacing: 0.05em;
  transition: color .3s var(--ease);
}
.nav-main a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .35s var(--ease);
}
.nav-main a:hover { color: var(--c-gold); }
.nav-main a:hover::after { transform: scaleX(1); }

/* 顶部 CTA */
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: var(--c-gold);
  color: var(--c-bg-dark);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: all .3s var(--ease);
}
.nav-cta:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(201, 169, 97, 0.32);
}

/* 移动端切换 */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: #fff;
  transition: all .3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--header-h) + 40px) 0 80px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0E2A47 0%, #0A1F36 50%, #0E2A47 100%);
  color: var(--c-text-on-dark);
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  animation: float 12s ease-in-out infinite;
}
.shape-1 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(201, 169, 97, 0.55), transparent 60%);
  top: -120px; right: -80px;
}
.shape-2 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(122, 46, 58, 0.45), transparent 60%);
  bottom: -120px; left: -100px;
  animation-delay: -4s;
}
.shape-3 {
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(201, 169, 97, 0.30), transparent 60%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -8s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.08); }
}
.shape-3 { animation-name: floatMid; }
@keyframes floatMid {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.15); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 169, 97, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 169, 97, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.hero-inner {
  position: relative;
  text-align: left;
  max-width: 980px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 32px;
  font-weight: 500;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px;
  background: var(--c-gold);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(201, 169, 97, 0.15);
  animation: pulse 2.2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(201, 169, 97, 0.15); }
  50%      { box-shadow: 0 0 0 8px rgba(201, 169, 97, 0.05); }
}

.hero-title {
  font-family: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", serif;
  font-weight: 600;
  letter-spacing: 0.005em;
  margin-bottom: 24px;
}
.hero-title-fr {
  display: block;
  font-size: clamp(40px, 7.2vw, 92px);
  line-height: 1.05;
  color: #fff;
  font-style: italic;
  letter-spacing: 0.01em;
}
.hero-title-cn {
  display: block;
  font-size: clamp(20px, 2.4vw, 30px);
  color: var(--c-gold);
  font-weight: 500;
  margin-top: 16px;
  letter-spacing: 0.18em;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Serif SC", serif;
}

.hero-sub {
  max-width: 680px;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.9;
  color: rgba(241, 236, 224, 0.82);
  margin-bottom: 36px;
}

.hero-words {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
}
.hero-words .word {
  padding: 6px 14px;
  font-size: 13px;
  border: 1px solid var(--c-line-dark);
  border-radius: 2px;
  color: rgba(241, 236, 224, 0.85);
  letter-spacing: 0.08em;
  transition: all .3s var(--ease);
}
.hero-words .word:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: all .3s var(--ease);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-gold);
  color: var(--c-bg-dark);
  border-color: var(--c-gold);
}
.btn-primary:hover {
  background: #fff;
  border-color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(201, 169, 97, 0.34);
}
.btn-ghost {
  background: transparent;
  color: var(--c-text-on-dark);
  border-color: var(--c-line-dark);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--c-gold);
  color: var(--c-gold);
}
.btn-block { width: 100%; }

.hero-trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 36px;
  border-top: 1px solid var(--c-line-dark);
  max-width: 820px;
}
.hero-trust li {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(241, 236, 224, 0.7);
}
.hero-trust strong {
  display: block;
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: clamp(28px, 3.4vw, 40px);
  color: var(--c-gold);
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 38px;
  border: 1px solid var(--c-line-dark);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.hero-scroll span {
  display: block;
  width: 2px; height: 8px;
  background: var(--c-gold);
  border-radius: 2px;
  animation: scroll 1.6s var(--ease) infinite;
}
@keyframes scroll {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

/* ---------- 通用 section ---------- */
.section {
  padding: clamp(80px, 10vw, 140px) 0;
  position: relative;
}
.section-head {
  max-width: 780px;
  margin: 0 auto 70px;
  text-align: center;
}
.section-eyebrow {
  font-size: 12.5px;
  letter-spacing: 0.32em;
  color: var(--c-gold-deep);
  font-weight: 600;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.section-title {
  font-family: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  color: var(--c-bg-dark);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.005em;
}
.section-desc {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-text-soft);
  max-width: 720px;
  margin: 0 auto;
}
.section-head.light .section-title { color: #fff; }
.section-head.light .section-desc { color: rgba(241, 236, 224, 0.75); }
.section-head.light .section-eyebrow { color: var(--c-gold); }

/* ---------- 数据实力 ---------- */
.stats {
  background: var(--c-bg-soft);
  padding: 60px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat {
  text-align: center;
  position: relative;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0; top: 12px; bottom: 12px;
  width: 1px;
  background: var(--c-line);
}
.stat-num {
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: clamp(48px, 5vw, 68px);
  font-weight: 600;
  color: var(--c-bg-dark);
  line-height: 1;
  display: inline-block;
}
.stat-suffix {
  display: inline-block;
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(28px, 3vw, 36px);
  color: var(--c-gold);
  font-weight: 600;
  margin-left: 2px;
  vertical-align: top;
}
.stat-label {
  margin-top: 10px;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--c-text-soft);
}

/* ---------- 服务卡片 ---------- */
.services { background: var(--c-bg); }
.cards {
  display: grid;
  gap: 24px;
}
.services-grid {
  grid-template-columns: repeat(3, 1fr);
}
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--c-radius-lg);
  padding: 36px 30px 32px;
  transition: all .4s var(--ease);
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 169, 97, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--c-shadow-hover);
  border-color: var(--c-gold);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #F7F4EE, #EFE9DF);
  color: var(--c-bg-dark);
  border-radius: 50%;
  margin-bottom: 22px;
  transition: all .4s var(--ease);
}
.card-icon svg { width: 28px; height: 28px; }
.card:hover .card-icon {
  background: var(--c-bg-dark);
  color: var(--c-gold);
  transform: rotate(-6deg);
}
.card h3 {
  font-size: 19px;
  color: var(--c-bg-dark);
  margin-bottom: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.card p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-text-soft);
  margin-bottom: 18px;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.card-tags li {
  font-size: 12px;
  padding: 4px 10px;
  background: var(--c-bg-soft);
  color: var(--c-text-soft);
  border-radius: 2px;
  letter-spacing: 0.06em;
}
.card:hover .card-tags li {
  background: rgba(201, 169, 97, 0.12);
  color: var(--c-gold-deep);
}

/* ---------- 15年+优势 ---------- */
.advantage {
  background:
    linear-gradient(180deg, rgba(14, 42, 71, 0.96), rgba(10, 31, 54, 0.96)),
    radial-gradient(ellipse at top, rgba(201, 169, 97, 0.12), transparent 60%);
  color: var(--c-text-on-dark);
  position: relative;
  overflow: hidden;
}
.advantage::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.advantage::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.adv {
  position: relative;
  padding: 38px 30px 32px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-line-dark);
  border-radius: var(--c-radius-lg);
  transition: all .4s var(--ease);
  overflow: hidden;
}
.adv:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--c-gold);
  transform: translateY(-4px);
}
.adv-num {
  position: absolute;
  top: 18px; right: 22px;
  font-family: "Cormorant Garamond", serif;
  font-size: 42px;
  font-style: italic;
  color: var(--c-gold);
  opacity: 0.35;
  line-height: 1;
  font-weight: 500;
  transition: opacity .4s var(--ease);
}
.adv:hover .adv-num { opacity: 0.85; }
.adv h3 {
  font-size: 19px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.adv p {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(241, 236, 224, 0.78);
}

/* ---------- 流程 ---------- */
.process { background: var(--c-bg-soft); }
.process-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}
.process-track::before {
  content: "";
  position: absolute;
  top: 28px; left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), var(--c-gold), transparent);
  z-index: 0;
}
.process-track li {
  position: relative;
  z-index: 1;
  padding: 0 8px;
  text-align: center;
}
.process-track .step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  background: #fff;
  border: 1px solid var(--c-gold);
  color: var(--c-gold-deep);
  font-family: "Cormorant Garamond", serif;
  font-size: 22px;
  font-weight: 600;
  border-radius: 50%;
  margin-bottom: 18px;
  font-style: italic;
  transition: all .35s var(--ease);
}
.process-track li:hover .step {
  background: var(--c-bg-dark);
  color: var(--c-gold);
  border-color: var(--c-bg-dark);
  transform: scale(1.08);
}
.process-track h4 {
  font-size: 16px;
  color: var(--c-bg-dark);
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.process-track p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* ---------- 行业方案 ---------- */
.cases { background: var(--c-bg); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.case {
  position: relative;
  padding: 32px 24px 26px;
  background: linear-gradient(135deg, #fff, var(--c-bg-soft));
  border: 1px solid var(--c-line);
  border-radius: var(--c-radius-lg);
  transition: all .35s var(--ease);
  overflow: hidden;
}
.case::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 3px;
  background: var(--c-gold);
  transition: width .5s var(--ease);
}
.case:hover {
  border-color: var(--c-gold);
  transform: translateY(-4px);
  box-shadow: var(--c-shadow);
}
.case:hover::before { width: 100%; }
.case span {
  display: block;
  font-size: 18px;
  color: var(--c-bg-dark);
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.case p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* ---------- FAQ ---------- */
.faq { background: var(--c-bg-soft); }
.faq-list {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--c-radius-lg);
  transition: all .3s var(--ease);
  overflow: hidden;
}
.faq-item[open] {
  border-color: var(--c-gold);
  box-shadow: var(--c-shadow);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q {
  font-size: 16px;
  color: var(--c-bg-dark);
  font-weight: 600;
  letter-spacing: 0.01em;
  flex: 1;
  line-height: 1.6;
}
.faq-icon {
  width: 26px; height: 26px;
  position: relative;
  flex-shrink: 0;
  transition: transform .35s var(--ease);
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--c-gold-deep);
  border-radius: 1px;
  transition: transform .35s var(--ease), background .3s var(--ease);
}
.faq-icon::before {
  top: 50%; left: 4px; right: 4px;
  height: 1.5px;
  transform: translateY(-50%);
}
.faq-icon::after {
  left: 50%; top: 4px; bottom: 4px;
  width: 1.5px;
  transform: translateX(-50%);
}
.faq-item[open] .faq-icon::after {
  transform: translateX(-50%) scaleY(0);
}
.faq-item[open] .faq-icon {
  background: var(--c-bg-dark);
  border-radius: 50%;
  width: 26px; height: 26px;
}
.faq-item[open] .faq-icon::before { background: var(--c-gold); }
.faq-a {
  padding: 0 26px 24px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--c-text-soft);
  border-top: 1px dashed var(--c-line);
  padding-top: 18px;
  margin-top: 2px;
  animation: fadeIn .4s var(--ease);
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- 联系方式 ---------- */
.contact { background: var(--c-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: stretch;
}
.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 24px;
  align-content: start;
}
.ci-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--c-radius-lg);
  transition: all .3s var(--ease);
}
.ci-item:hover {
  border-color: var(--c-gold);
  transform: translateY(-2px);
  box-shadow: var(--c-shadow);
}
.ci-ico {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-bg-soft);
  color: var(--c-bg-dark);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all .3s var(--ease);
}
.ci-ico svg { width: 20px; height: 20px; }
.ci-item:hover .ci-ico {
  background: var(--c-bg-dark);
  color: var(--c-gold);
}
.ci-label {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--c-text-light);
  margin-bottom: 4px;
  text-transform: uppercase;
}
.ci-value {
  font-size: 15.5px;
  color: var(--c-bg-dark);
  font-weight: 600;
  letter-spacing: 0.01em;
  word-break: break-all;
  transition: color .3s var(--ease);
}
a.ci-value:hover { color: var(--c-gold-deep); }

.contact-qr {
  display: flex;
  align-items: stretch;
}
.qr-card {
  width: 100%;
  background: var(--c-bg-dark);
  color: var(--c-text-on-dark);
  border-radius: var(--c-radius-lg);
  padding: 32px 28px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}
.qr-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 0%, rgba(201, 169, 97, 0.18), transparent 50%),
    radial-gradient(circle at 0% 100%, rgba(122, 46, 58, 0.16), transparent 50%);
  z-index: 0;
}
.qr-card > * { position: relative; z-index: 1; }
.qr-img {
  background: #fff;
  border-radius: 6px;
  padding: 10px;
  display: inline-block;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}
.qr-img img {
  width: 200px; height: 200px;
  object-fit: contain;
  display: block;
}
.qr-tip {
  font-size: 18px;
  color: var(--c-gold);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.qr-sub {
  font-size: 13px;
  color: rgba(241, 236, 224, 0.7);
  line-height: 1.7;
  margin-bottom: 22px;
}

/* ---------- 业务矩阵 ---------- */
.business { background: var(--c-bg-soft); }
.biz-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
}
.biz-grid li a {
  display: block;
  text-align: center;
  padding: 14px 8px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  font-size: 13.5px;
  color: var(--c-text);
  letter-spacing: 0.04em;
  transition: all .3s var(--ease);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.biz-grid li a:hover {
  background: var(--c-bg-dark);
  color: var(--c-gold);
  border-color: var(--c-bg-dark);
  transform: translateY(-2px);
}
.biz-grid li a.biz-current {
  background: var(--c-bg-dark);
  color: var(--c-gold);
  border-color: var(--c-gold);
  position: relative;
}
.biz-grid li a.biz-current::after {
  content: "当前";
  position: absolute;
  top: -6px; right: -6px;
  font-size: 10px;
  padding: 2px 6px;
  background: var(--c-gold);
  color: var(--c-bg-dark);
  border-radius: 8px;
  font-weight: 600;
}

/* ---------- 底部 ---------- */
.site-footer {
  background: var(--c-bg-darker);
  color: var(--c-text-on-dark);
  padding: 80px 0 30px;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 50px;
}
.footer-brand .brand {
  margin-bottom: 18px;
  font-size: 18px;
}
.footer-tag {
  font-size: 14px;
  color: var(--c-gold);
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}
.footer-tip {
  font-size: 13px;
  color: rgba(241, 236, 224, 0.6);
  line-height: 1.8;
}
.footer-col h5 {
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--c-gold);
  margin-bottom: 18px;
  font-weight: 600;
  text-transform: uppercase;
}
.footer-col ul li {
  margin-bottom: 10px;
  font-size: 13.5px;
  color: rgba(241, 236, 224, 0.7);
}
.footer-col ul li a {
  transition: color .3s var(--ease);
}
.footer-col ul li a:hover { color: var(--c-gold); }
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--c-line-dark);
  font-size: 12.5px;
  color: rgba(241, 236, 224, 0.6);
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 2;
}
.footer-bottom a {
  color: rgba(241, 236, 224, 0.85);
  transition: color .3s var(--ease);
}
.footer-bottom a:hover { color: var(--c-gold); }
.footer-bottom .sep {
  margin: 0 8px;
  color: var(--c-gold);
  opacity: 0.5;
}
.footer-safe {
  margin-top: 4px;
  font-size: 12px;
  color: rgba(241, 236, 224, 0.45);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .nav-main a { padding: 8px 10px; }
  .hero-trust { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 992px) {
  :root { --header-h: 64px; }
  .nav-main {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--c-bg-darker);
    padding: 24px var(--pad-x) 40px;
    transform: translateY(-110%);
    transition: transform .4s var(--ease);
    border-top: 1px solid var(--c-line-dark);
  }
  .nav-main.is-open { transform: translateY(0); }
  .nav-main ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-main a {
    padding: 16px 0;
    border-bottom: 1px solid var(--c-line-dark);
    display: block;
  }
  .nav-main a::after { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .process-track { grid-template-columns: repeat(3, 1fr); gap: 32px 12px; }
  .process-track::before { display: none; }
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .biz-grid { grid-template-columns: repeat(5, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 16px; }
  .stat + .stat::before { display: none; }
}

@media (max-width: 768px) {
  .hero { padding-top: calc(var(--header-h) + 30px); padding-bottom: 100px; min-height: auto; }
  .hero-eyebrow { font-size: 12px; margin-bottom: 24px; }
  .hero-title-fr { font-size: clamp(36px, 9vw, 56px); }
  .hero-sub { font-size: 15px; }
  .hero-words .word { font-size: 12px; }
  .hero-actions { margin-bottom: 40px; }
  .btn { padding: 12px 22px; font-size: 14px; }
  .hero-trust { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .section { padding: 70px 0; }
  .section-head { margin-bottom: 50px; }
  .services-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-info { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .biz-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-bottom { font-size: 11.5px; }
  .footer-bottom .sep { display: block; margin: 0; height: 0; }
  .hero-scroll { display: none; }
  .qr-img img { width: 180px; height: 180px; }
  .brand { font-size: 14px; }
  .brand-mark { font-size: 18px; }
  .brand-key { font-size: 12px; padding: 3px 7px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero-words { gap: 6px; }
  .hero-words .word { padding: 4px 10px; font-size: 11.5px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-item summary { padding: 18px 18px; }
  .faq-q { font-size: 14.5px; }
  .faq-a { padding: 0 18px 18px; font-size: 13.5px; }
}

/* ---------- 滚动入场动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}