/* =================================================================
 * KUMA 酷玛智能咖啡 · 企业站样式
 * 配色：深咖、奶油、金色
 * 风格：现代、高端、留白、丰富层次
 * ================================================================= */

/* ---------- 基础变量 ---------- */
:root {
  --c-bg: #FBF7F0;
  --c-bg-cream: #F5EEE3;
  --c-bg-deep: #1A1108;
  --c-coffee-1: #2A160A;
  --c-coffee-2: #3C1F0E;
  --c-coffee-3: #5A2E15;
  --c-coffee-4: #7C3D12;
  --c-gold-1: #C9A574;
  --c-gold-2: #B8860B;
  --c-gold-3: #D4B57E;
  --c-text: #2A1B10;
  --c-text-soft: #6B5944;
  --c-text-light: rgba(255, 255, 255, 0.78);
  --c-line: rgba(60, 31, 14, 0.12);
  --c-line-light: rgba(255, 255, 255, 0.16);

  --shadow-1: 0 8px 24px rgba(42, 22, 10, 0.06);
  --shadow-2: 0 24px 60px rgba(42, 22, 10, 0.12);
  --shadow-3: 0 40px 100px rgba(42, 22, 10, 0.22);

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", serif;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 24px;

  --container: 1240px;
  --header-h: 76px;

  --t-fast: 220ms cubic-bezier(.4,.0,.2,1);
  --t-base: 420ms cubic-bezier(.22,.61,.36,1);
  --t-slow: 800ms cubic-bezier(.22,.61,.36,1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; letter-spacing: .02em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 通用文字 ---------- */
.gradient-text {
  background: linear-gradient(120deg, #E8C896, #C9A574 40%, #FFFFFF 75%, #C9A574);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .28em;
  color: var(--c-gold-2);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section-eyebrow .line {
  width: 32px; height: 1px;
  background: currentColor;
  opacity: .6;
}
.section-eyebrow.center { justify-content: center; display: flex; }
.section-eyebrow.light { color: var(--c-gold-3); }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-coffee-1);
  letter-spacing: .02em;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--c-gold-2), var(--c-gold-1));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-title.light { color: #FFFFFF; }
.section-title.light em {
  background: linear-gradient(120deg, var(--c-gold-3), #FFFFFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-sub {
  font-size: 16px;
  color: var(--c-text-soft);
  max-width: 720px;
  margin: 18px auto 0;
}
.section-sub.light { color: var(--c-text-light); }

.section-head.center { text-align: center; margin-bottom: 60px; }
.section-head .section-eyebrow { margin-bottom: 14px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .08em;
  transition: all var(--t-base);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-coffee-4) 0%, var(--c-coffee-2) 100%);
  color: #FFFFFF;
  box-shadow: 0 10px 24px rgba(60, 31, 14, 0.35), inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(60, 31, 14, 0.45), inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-ghost {
  border: 1px solid rgba(255,255,255,.34);
  color: #fff;
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.55);
}
.btn-sm { padding: 10px 22px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; padding: 16px 30px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background var(--t-base), backdrop-filter var(--t-base), box-shadow var(--t-base);
}
.site-header.is-scrolled {
  background: rgba(255, 251, 245, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 rgba(60, 31, 14, 0.06);
}
.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand-mark { width: 40px; height: 40px; }
.brand-text {
  display: flex; flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: .18em;
  color: var(--c-coffee-2);
}
.brand-text em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .25em;
  color: var(--c-text-soft);
  margin-top: 2px;
}
.site-header:not(.is-scrolled) .brand-text strong { color: #fff; }
.site-header:not(.is-scrolled) .brand-text em { color: rgba(255,255,255,.7); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-link {
  position: relative;
  font-size: 14.5px;
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--c-text);
  padding: 6px 0;
}
.site-header:not(.is-scrolled) .nav-link { color: rgba(255, 255, 255, .82); }
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 2px;
  background: var(--c-gold-1);
  transition: all var(--t-base);
  transform: translateX(-50%);
}
.nav-link.active::after,
.nav-link:hover::after { width: 100%; }
.nav-link:hover { color: var(--c-coffee-3); }
.site-header:not(.is-scrolled) .nav-link:hover { color: #fff; }

.nav-actions { display: inline-flex; align-items: center; gap: 16px; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--t-fast);
}
.site-header.is-scrolled .nav-toggle span { background: var(--c-coffee-2); }

/* ---------- Hero 主视觉 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  padding-top: var(--header-h);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 70% 50%, rgba(124, 61, 18, .45) 0%, transparent 55%),
    linear-gradient(135deg, #1A1108 0%, #2A160A 40%, #3C1F0E 80%, #5A2E15 100%);
}
.hero-bg::before {
  content: "";
  position: absolute; inset: 0;
  background:
    /* 咖啡豆形状装饰 */
    radial-gradient(circle at 12% 18%, rgba(201, 165, 116, .14) 0 1px, transparent 2px),
    radial-gradient(circle at 88% 32%, rgba(201, 165, 116, .12) 0 1px, transparent 2px),
    radial-gradient(circle at 78% 78%, rgba(201, 165, 116, .14) 0 1px, transparent 2px),
    radial-gradient(circle at 22% 82%, rgba(201, 165, 116, .12) 0 1px, transparent 2px),
    radial-gradient(circle at 50% 50%, rgba(201, 165, 116, .08) 0 1px, transparent 2px);
  background-size: 400px 400px, 360px 360px, 380px 380px, 420px 420px, 320px 320px;
  opacity: .8;
}
.hero-bg::after {
  /* 模拟咖啡液体光晕 */
  content: "";
  position: absolute;
  right: -12%;
  top: 50%;
  transform: translateY(-50%);
  width: 720px;
  height: 720px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 35%, #C9A574 0%, #7C3D12 28%, transparent 56%);
  filter: blur(20px);
  opacity: .55;
  pointer-events: none;
}
.hero-grain {
  position: absolute; inset: 0;
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/></svg>");
  opacity: .35;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 80px 32px 120px;
  max-width: 1100px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--c-gold-3);
  font-size: 12.5px;
  letter-spacing: .42em;
  margin-bottom: 32px;
}
.hero-eyebrow .line { width: 48px; height: 1px; background: var(--c-gold-3); opacity: .8; }

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 6.2vw, 86px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: .03em;
  margin-bottom: 30px;
  text-shadow: 0 4px 30px rgba(0,0,0,.35);
}

.hero-sub {
  font-size: clamp(15px, 1.2vw, 17.5px);
  color: rgba(255,255,255,.78);
  max-width: 640px;
  margin-bottom: 44px;
  line-height: 1.95;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 72px; }

.hero-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 36px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.stat { display: flex; align-items: baseline; gap: 4px; }
.stat strong {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
}
.stat span {
  font-size: 18px;
  color: var(--c-gold-3);
  font-weight: 600;
}
.stat em {
  font-style: normal;
  font-size: 13px;
  color: rgba(255,255,255,.55);
  margin-left: 12px;
  letter-spacing: .1em;
}
.hero-stats .divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,.12);
}

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 24px;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center;
  color: rgba(255,255,255,.65);
  font-size: 11px;
  letter-spacing: .4em;
  z-index: 2;
}
.hero-scroll span {
  display: block;
  width: 1px; height: 50px;
  margin-bottom: 10px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,.8));
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 通用 Section ---------- */
.section { padding: 120px 0; position: relative; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

/* ---------- 品牌故事 ---------- */
.section-story { background: var(--c-bg); }
.story-media {
  position: relative;
  height: 600px;
}
.story-img {
  position: absolute;
  border-radius: var(--radius-l);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-2);
}
.story-img-1 {
  top: 0; left: 0;
  width: 70%; height: 70%;
  background-color: #3C1F0E;
  background-image:
    linear-gradient(135deg, rgba(60,31,14,.05), rgba(60,31,14,.15)),
    url("../images/story-1.jpg");
}
.story-img-2 {
  bottom: 0; right: 0;
  width: 55%; height: 55%;
  background-color: #5A2E15;
  background-image:
    linear-gradient(135deg, rgba(60,31,14,.05), rgba(60,31,14,.15)),
    url("../images/story-2.jpg");
  border: 8px solid var(--c-bg);
}
.story-badge {
  position: absolute;
  top: 50%; left: 5%;
  transform: translateY(-50%);
  background: linear-gradient(135deg, var(--c-coffee-2), var(--c-coffee-4));
  color: #fff;
  padding: 22px 28px;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-2);
  display: flex;
  flex-direction: column;
  z-index: 2;
}
.story-badge strong {
  font-family: var(--font-serif);
  font-size: 42px;
  line-height: 1;
  background: linear-gradient(120deg, var(--c-gold-3), #fff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.story-badge span {
  font-size: 12px;
  letter-spacing: .2em;
  color: rgba(255,255,255,.75);
  margin-top: 8px;
}
.story-text p {
  color: var(--c-text-soft);
  margin: 18px 0;
  line-height: 1.95;
}
.story-bullets { margin-top: 30px; display: flex; flex-direction: column; gap: 14px; }
.story-bullets li {
  display: flex; align-items: center; gap: 14px;
  color: var(--c-coffee-2);
  font-size: 15px;
}
.story-bullets li i {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--c-gold-1);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(201, 165, 116, .18);
}

/* ---------- 产品系列 ---------- */
.section-products {
  background: var(--c-bg-cream);
  background-image:
    radial-gradient(circle at 8% 12%, rgba(124, 61, 18, .04) 0 1px, transparent 2px),
    radial-gradient(circle at 80% 80%, rgba(124, 61, 18, .04) 0 1px, transparent 2px);
  background-size: 60px 60px;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 20px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform var(--t-base), box-shadow var(--t-base);
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2);
}
.product-img {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 280px;
}
.product-img::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(42,22,10,.0), rgba(42,22,10,.35));
}
.product-img .tag {
  position: absolute;
  top: 18px; left: 18px;
  background: linear-gradient(135deg, var(--c-coffee-3), var(--c-coffee-2));
  color: #fff;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 11px;
  letter-spacing: .22em;
  z-index: 1;
}
.product-img .tag-light {
  background: rgba(255,255,255,.92);
  color: var(--c-coffee-2);
}
.p-img-1 { background-color: #3C1F0E; background-image: linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.25)), url("../images/product-1.jpg"); }
.p-img-2 { background-color: #3C1F0E; background-image: linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.25)), url("../images/product-2.jpg"); }
.p-img-3 { background-color: #3C1F0E; background-image: linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.25)), url("../images/product-3.jpg"); }
.p-img-4 { background-color: #3C1F0E; background-image: linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.25)), url("../images/product-4.jpg"); }

.product-body {
  padding: 36px 32px;
  display: flex; flex-direction: column;
  justify-content: space-between;
}
.product-body h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--c-coffee-1);
  margin-bottom: 12px;
}
.product-desc { color: var(--c-text-soft); font-size: 14.5px; line-height: 1.85; margin-bottom: 18px; }
.product-specs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.product-specs span {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-coffee-3);
  background: rgba(124, 61, 18, .07);
  padding: 4px 10px;
  border-radius: 4px;
}
.product-more {
  font-size: 14px;
  color: var(--c-coffee-3);
  font-weight: 500;
  align-self: flex-start;
  letter-spacing: .08em;
  position: relative;
  padding-bottom: 4px;
}
.product-more::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--c-gold-1);
  transform: scaleX(.4);
  transform-origin: left;
  transition: transform var(--t-base);
}
.product-more:hover { color: var(--c-coffee-1); }
.product-more:hover::after { transform: scaleX(1); }

/* ---------- 智能科技 ---------- */
.section-tech {
  background: var(--c-coffee-1);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.tech-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(201, 165, 116, .12), transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(124, 61, 18, .35), transparent 60%);
  z-index: 0;
}
.section-tech .container { position: relative; z-index: 1; }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}
.tech-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-l);
  padding: 36px 32px;
  transition: all var(--t-base);
  position: relative;
  overflow: hidden;
}
.tech-item::before {
  content: "";
  position: absolute;
  top: -50%; right: -50%;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(201, 165, 116, .14), transparent 70%);
  opacity: 0;
  transition: opacity var(--t-base);
}
.tech-item:hover {
  border-color: rgba(201, 165, 116, 0.32);
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.06);
}
.tech-item:hover::before { opacity: 1; }
.tech-ico {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(201, 165, 116, .18), rgba(201, 165, 116, .04));
  color: var(--c-gold-3);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}
.tech-ico svg { width: 28px; height: 28px; }
.tech-item h4 {
  font-family: var(--font-serif);
  font-size: 19px;
  color: #fff;
  margin-bottom: 10px;
}
.tech-item p { color: rgba(255,255,255,.65); font-size: 14px; line-height: 1.85; }

/* ---------- 应用场景 ---------- */
.section-scenarios { background: var(--c-bg); }
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario-card {
  position: relative;
  height: 320px;
  border-radius: var(--radius-l);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  transition: transform var(--t-base);
}
.scenario-card:hover { transform: translateY(-4px); }
.scenario-card:hover .scenario-info { transform: translateY(-8px); }
.scenario-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(26,17,8,.85) 100%);
}
.scenario-info {
  position: absolute;
  left: 28px; bottom: 26px; right: 28px;
  color: #fff;
  z-index: 1;
  transition: transform var(--t-base);
}
.scenario-info h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  margin-bottom: 6px;
}
.scenario-info p { font-size: 13.5px; color: rgba(255,255,255,.75); }

.s-card-1 { background-color: #3C1F0E; background-image: url("../images/scene-office.jpg"); }
.s-card-2 { background-color: #3C1F0E; background-image: url("../images/scene-mall.jpg"); }
.s-card-3 { background-color: #3C1F0E; background-image: url("../images/scene-hotel.jpg"); }
.s-card-4 { background-color: #3C1F0E; background-image: url("../images/scene-campus.jpg"); }
.s-card-5 { background-color: #3C1F0E; background-image: url("../images/scene-hospital.jpg"); }
.s-card-6 { background-color: #3C1F0E; background-image: url("../images/scene-airport.jpg"); }

/* ---------- 服务支持 ---------- */
.section-service {
  background: linear-gradient(180deg, var(--c-bg-cream) 0%, var(--c-bg) 100%);
}
.service-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  margin-top: 20px;
}
.step {
  background: #fff;
  border-radius: var(--radius-m);
  padding: 36px 26px;
  border-top: 3px solid var(--c-gold-1);
  box-shadow: var(--shadow-1);
  transition: all var(--t-base);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); }
.step-num {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  background: linear-gradient(120deg, var(--c-gold-2), var(--c-coffee-4));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.step h4 {
  font-size: 18px;
  font-family: var(--font-serif);
  color: var(--c-coffee-1);
  margin-bottom: 10px;
}
.step p { color: var(--c-text-soft); font-size: 13.5px; line-height: 1.8; }

/* ---------- 数据看板 ---------- */
.section-numbers {
  background: linear-gradient(135deg, var(--c-coffee-2) 0%, var(--c-coffee-4) 60%, var(--c-coffee-3) 100%);
  padding: 80px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-numbers::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 50%, rgba(201, 165, 116, .25), transparent 50%);
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.num-item strong {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  background: linear-gradient(120deg, #FFFFFF, var(--c-gold-3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.num-item span {
  font-size: 18px;
  color: var(--c-gold-3);
  font-weight: 600;
  margin-left: 4px;
}
.num-item em {
  display: block;
  font-style: normal;
  font-size: 14px;
  color: rgba(255,255,255,.7);
  margin-top: 10px;
  letter-spacing: .15em;
}

/* ---------- 联系我们 ---------- */
.section-contact { background: var(--c-bg); padding-top: 120px; padding-bottom: 120px; }
.grid-contact {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 80px;
  align-items: start;
}
.contact-left .section-title { margin-bottom: 24px; }
.contact-left > p { color: var(--c-text-soft); margin-bottom: 36px; }

.contact-list {
  display: flex; flex-direction: column;
  gap: 24px;
}
.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 24px;
  border-radius: var(--radius-m);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--c-line);
  transition: all var(--t-base);
}
.contact-list li:hover {
  background: #fff;
  border-color: var(--c-gold-1);
  transform: translateX(4px);
}
.contact-list .ci {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-coffee-3), var(--c-coffee-2));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.contact-list .ci svg { width: 22px; height: 22px; }
.contact-list em { display: block; font-style: normal; font-size: 12px; color: var(--c-text-soft); letter-spacing: .12em; margin-bottom: 4px; }
.contact-list strong { font-size: 17px; color: var(--c-coffee-1); font-weight: 500; }

.contact-form {
  background: #fff;
  padding: 48px;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-2);
  border: 1px solid var(--c-line);
}
.contact-form h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--c-coffee-1);
  margin-bottom: 8px;
}
.form-sub { color: var(--c-text-soft); font-size: 14px; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-block { display: block; margin-bottom: 18px; }
.contact-form label > span {
  display: block;
  font-size: 13px;
  color: var(--c-text-soft);
  margin-bottom: 8px;
  letter-spacing: .08em;
}
.contact-form label > span i { color: #C04A2B; font-style: normal; margin-left: 4px; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--c-line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 14px;
  color: var(--c-text);
  background: #FBF7F0;
  transition: all var(--t-fast);
  resize: vertical;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--c-gold-1);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(201, 165, 116, .15);
}
.form-tip { font-size: 12px; color: var(--c-text-soft); margin-top: 12px; text-align: center; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-coffee-1);
  color: rgba(255,255,255,.75);
  padding-top: 80px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .brand .brand-text strong { color: #fff; }
.footer-brand .brand .brand-text em { color: rgba(255,255,255,.55); }
.footer-brand p { margin-top: 22px; line-height: 1.95; color: rgba(255,255,255,.6); font-size: 14px; }
.socials { display: flex; gap: 10px; margin-top: 24px; }
.socials a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.75);
  transition: all var(--t-fast);
}
.socials a:hover { background: var(--c-gold-1); color: var(--c-coffee-1); }
.socials svg { width: 18px; height: 18px; }

.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links h5 {
  font-size: 14px;
  letter-spacing: .12em;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 500;
}
.footer-links a {
  font-size: 13.5px;
  color: rgba(255,255,255,.6);
}
.footer-links a:hover { color: var(--c-gold-3); }

.footer-qr .qr-box {
  display: flex; flex-direction: column; align-items: center;
}
.qr-img {
  width: 110px; height: 110px;
  background: #fff; border-radius: 10px;
  padding: 8px;
  display: flex; align-items: center; justify-content: center;
}
.qr-img svg { width: 100%; height: 100%; }
.footer-qr span {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,.55);
  margin-top: 12px;
  letter-spacing: .1em;
}

.footer-bottom { padding: 24px 0; background: rgba(0,0,0,.18); }
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: rgba(255,255,255,.5);
}
.beian a { color: rgba(255,255,255,.7); transition: color var(--t-fast); }
.beian a:hover { color: var(--c-gold-3); }
.beian .sep { margin: 0 12px; color: rgba(255,255,255,.2); }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 32px; bottom: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--c-coffee-2);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all var(--t-base);
  z-index: 90;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:hover { background: var(--c-coffee-4); transform: translateY(-4px); }
.back-top svg { width: 20px; height: 20px; }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .section { padding: 90px 0; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-qr { grid-column: 1 / -1; align-items: flex-start; }
  .service-steps { grid-template-columns: repeat(3, 1fr); }
  .grid-2 { grid-template-columns: 1fr; gap: 60px; }
  .grid-contact { grid-template-columns: 1fr; gap: 60px; }
  .products-grid { grid-template-columns: 1fr; }
  .product-card { grid-template-columns: 1fr; }
  .product-img { min-height: 220px; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .container { padding: 0 20px; }
  .section { padding: 70px 0; }

  .nav-menu {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    background: rgba(255,251,245,.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    gap: 0;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--c-line);
    transform: translateY(-110%);
    transition: transform var(--t-base);
  }
  .nav-menu.show { transform: translateY(0); }
  .nav-menu .nav-link {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--c-line);
    color: var(--c-coffee-2);
  }
  .site-header:not(.is-scrolled) .nav-menu .nav-link { color: var(--c-coffee-2); }
  .nav-toggle { display: flex; }
  .nav-actions .btn { display: none; }

  .hero-inner { padding: 60px 20px 100px; }
  .hero-title { font-size: clamp(34px, 8vw, 56px); }
  .hero-stats { gap: 18px; }
  .hero-stats .divider { display: none; }
  .stat strong { font-size: 28px; }
  .stat em { margin-left: 8px; font-size: 12px; }

  .story-media { height: 460px; }
  .story-badge { padding: 16px 20px; }
  .story-badge strong { font-size: 32px; }

  .tech-grid { grid-template-columns: 1fr; gap: 16px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card { height: 240px; }

  .service-steps { grid-template-columns: 1fr 1fr; }

  .numbers-grid { grid-template-columns: 1fr 1fr; gap: 36px 16px; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; padding-bottom: 40px; }
  .footer-brand, .footer-qr { grid-column: 1 / -1; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; text-align: left; }
  .beian { line-height: 2; }

  .contact-form { padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }

  .back-top { right: 16px; bottom: 16px; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .service-steps { grid-template-columns: 1fr; }
}