@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap');

/* ==================================================================
   TekTale — 全站样式
   1. 设计变量 / 基础
   2. 顶栏与通用元素
   3. 首页：Hero / 跑马灯 / 服务 / 商品 / 编辑区 / 订阅 / 页脚
   4. 购物车抽屉 + 结账弹窗 + Toast
   5. 商品详情页
   6. 服务内页（35 / 38 / 42）
   7. 动效与响应式
================================================================== */

/* ---------- 1. 设计变量 / 基础 ---------- */

:root {
  --ink: #0d1820;
  --ink-soft: #56626a;
  --paper: #f4f1eb;
  --paper-deep: #e9e5dc;
  --white: #fffdf9;
  --lime: #d8ff68;
  --lime-dark: #9bbd26;
  --blue: #75a9ff;
  --blue-deep: #426fae;
  --line: rgba(13, 24, 32, 0.14);
  --radius: 24px;
  --display: 'Manrope', 'Helvetica Neue', Helvetica, 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  --mono: 'DM Mono', 'SFMono-Regular', Consolas, monospace;
  --shadow-soft: 0 18px 40px rgba(13, 24, 32, 0.08);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* 隐藏页面滚动条，但仍可滚轮 / 触摸 / 键盘滚动 */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar { width: 0; height: 0; display: none; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--display);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { border: 0; cursor: pointer; background: transparent; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, ol, ul { margin-top: 0; }
[hidden] { display: none !important; }

::selection { background: var(--lime); color: var(--ink); }

.site-shell { overflow: hidden; }
.section-pad { width: min(1400px, calc(100% - 112px)); margin: 0 auto; }

/* ---------- 2. 顶栏与通用元素 ---------- */

.topbar {
  width: min(1400px, calc(100% - 112px));
  height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative;
  z-index: 10;
  transition: box-shadow 0.3s var(--ease);
}

.topbar.is-scrolled { box-shadow: 0 1px 0 var(--line); }

.wordmark {
  font-size: 30px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.085em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.primary-nav a,
.text-link,
.cart-trigger {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-soft);
  transition: color 0.2s ease;
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a.active,
.text-link:hover { color: var(--ink); }

.primary-nav a.active { position: relative; }

.primary-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 2px;
  background: var(--lime-dark);
}

.topbar-actions { display: flex; align-items: center; gap: 24px; }

.text-link span,
.footer-contact span,
.underlined-link span,
.service-arrow span { display: inline-block; transition: transform 0.2s ease; }

.text-link:hover span,
.footer-contact:hover span,
.underlined-link:hover span,
.service-card:hover .service-arrow span { transform: translate(3px, -3px); }

.cart-trigger {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  padding: 0;
}

.cart-count {
  min-width: 21px;
  height: 21px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--lime);
  font: 10px var(--mono);
  transition: transform 0.2s var(--ease);
}

.cart-count.bump { transform: scale(1.22); }

.menu-toggle { display: none; padding: 7px 0 7px 8px; }
.menu-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--ink);
  margin: 5px 0;
  transition: transform 0.2s ease;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font: 10px var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  display: inline-block;
  border-radius: 50%;
  background: var(--lime-dark);
  flex: none;
}

h1, h2 {
  font-weight: 700;
  letter-spacing: -0.085em;
  line-height: 0.98;
}

h1 em, h2 span,
.section-heading h2 span,
.editorial-copy h2 span,
.service-callout h2 span { font-style: normal; color: var(--blue-deep); }

.button {
  min-height: 48px;
  padding: 0 19px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s ease;
}

.button:hover { transform: translateY(-3px); box-shadow: 0 11px 20px rgba(13, 24, 32, 0.12); }
.button span { font-size: 16px; line-height: 0; }
.button-lime { background: var(--lime); color: var(--ink); }
.button-ghost { border: 1px solid var(--line); color: var(--ink); }
.button-ghost:hover { background: var(--white); }
.button-dark { background: var(--ink); color: var(--paper); }
.button-blue { background: var(--blue-deep); color: var(--white); }
.full-width { width: 100%; }

.underlined-link {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  align-self: flex-start;
}

.breadcrumb {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--ink-soft);
  font: 10px var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.breadcrumb span { color: var(--ink); }

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 54px;
}

.section-heading h2 {
  font-size: clamp(46px, 5.2vw, 78px);
  margin: 22px 0 0;
}

.section-heading > p {
  max-width: 380px;
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.75;
}

/* ---------- 3. 首页 ---------- */

/* Hero */
.hero {
  min-height: 690px;
  display: grid;
  grid-template-columns: 0.94fr 1.06fr;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 72px;
  gap: 36px;
}

.hero-copy { position: relative; z-index: 2; padding-left: clamp(0px, 4vw, 58px); }

.hero h1 {
  font-size: clamp(56px, 8vw, 122px);
  margin: 29px 0 25px;
  max-width: 720px;
}

.hero h1 em { color: var(--lime-dark); }

.hero-intro {
  max-width: 470px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-proof {
  border-top: 1px solid var(--line);
  margin-top: 64px;
  padding-top: 16px;
  display: flex;
  gap: clamp(18px, 4vw, 56px);
  max-width: 500px;
}

.hero-proof div { display: flex; flex-direction: column; gap: 5px; }
.hero-proof strong { font-size: 22px; font-weight: 700; letter-spacing: -0.06em; }
.hero-proof span { color: var(--ink-soft); font-size: 10px; font-weight: 600; white-space: nowrap; }

.hero-visual {
  min-height: 590px;
  position: relative;
  display: grid;
  place-items: center;
}

.hero-glow {
  position: absolute;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 255, 104, 0.72) 0, rgba(216, 255, 104, 0.18) 42%, rgba(216, 255, 104, 0) 68%);
  filter: blur(5px);
}

.hero-ring {
  position: absolute;
  border: 1px solid rgba(13, 24, 32, 0.12);
  border-radius: 50%;
  transform: rotate(-20deg);
}

.hero-ring-one { width: 74%; aspect-ratio: 1; }
.hero-ring-two { width: 90%; aspect-ratio: 1; border-color: rgba(13, 24, 32, 0.07); }

.hero-main-product {
  width: min(76%, 510px);
  position: relative;
  z-index: 2;
  transform: rotate(3deg);
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-soft);
}

.hero-main-product img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.hero-product-caption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 6px 2px;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.hero-product-caption span { color: var(--ink-soft); font: 9px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }
.hero-product-caption strong { font-size: 14px; letter-spacing: -0.03em; }

.floating-tag {
  position: absolute;
  top: -14px;
  left: -14px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font: 9px var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.floating-tag i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.7); }
}

.hero-mini-product {
  position: absolute;
  z-index: 3;
  bottom: 6%;
  left: 0;
  width: 172px;
  padding: 10px 10px 12px;
  border-radius: 16px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
  transform: rotate(-4deg);
}

.hero-mini-product img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.hero-mini-product span {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-signal-card {
  position: absolute;
  z-index: 3;
  top: 9%;
  right: 0;
  display: grid;
  gap: 3px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.hero-signal-card strong { font-size: 13px; letter-spacing: -0.03em; }
.hero-signal-card small { color: var(--ink-soft); font: 9px var(--mono); text-transform: uppercase; }

.signal-bars { display: flex; align-items: flex-end; gap: 2px; height: 14px; margin-bottom: 6px; }
.signal-bars i { width: 3px; background: var(--lime-dark); border-radius: 2px; }
.signal-bars i:nth-child(1) { height: 5px; }
.signal-bars i:nth-child(2) { height: 8px; }
.signal-bars i:nth-child(3) { height: 11px; }
.signal-bars i:nth-child(4) { height: 14px; }

.hero-coordinate {
  position: absolute;
  right: 4%;
  bottom: 8%;
  color: var(--ink-soft);
  font: 9px/1.5 var(--mono);
  letter-spacing: 0.05em;
  text-align: right;
}

.hero-coordinate span { color: rgba(86, 98, 106, 0.6); }

/* 跑马灯 */
.ticker {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
  background: var(--paper-deep);
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: 34px;
  width: max-content;
  animation: ticker 26s linear infinite;
}

.ticker-track span {
  font: 11px var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--ink);
}

.ticker-track b { color: var(--lime-dark); font-size: 13px; }

@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* 服务 */
.services { padding-top: 128px; padding-bottom: 120px; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 22px 24px 26px;
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft); }

.service-card-lime { background: var(--lime); }
.service-card-blue { background: var(--blue); }
.service-card-cream { background: var(--paper-deep); }

.service-topline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: rgba(13, 24, 32, 0.62);
  font: 9px var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.service-card h3 {
  font-size: clamp(26px, 2.4vw, 34px);
  line-height: 0.98;
  letter-spacing: -0.075em;
  margin: 0 0 14px;
}

.service-card p {
  max-width: 320px;
  color: rgba(13, 24, 32, 0.66);
  font-size: 12px;
  line-height: 1.65;
  margin-bottom: 24px;
}

.service-arrow {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 800;
}

.service-icon {
  position: relative;
  height: 132px;
  margin: 26px 0 auto;
  display: grid;
  place-items: center;
}

.icon-target span {
  width: 96px;
  height: 96px;
  border: 1px solid rgba(13, 24, 32, 0.3);
  border-radius: 50%;
  box-shadow: 0 0 0 17px rgba(13, 24, 32, 0.06), inset 0 0 0 24px rgba(255, 253, 249, 0.3);
}

.icon-wave span {
  position: absolute;
  width: 96px;
  height: 96px;
  border: 1px solid rgba(13, 24, 32, 0.32);
  border-radius: 50%;
}

.icon-wave span:nth-child(2) { width: 66px; height: 66px; }
.icon-wave span:nth-child(3) { width: 34px; height: 34px; background: rgba(255, 253, 249, 0.55); }

.icon-cloud span {
  width: 104px;
  height: 62px;
  border: 1px solid rgba(13, 24, 32, 0.3);
  border-radius: 40px 40px 26px 26px;
  background: rgba(255, 253, 249, 0.4);
  box-shadow: 0 0 0 12px rgba(13, 24, 32, 0.04);
}

/* 商品集合 */
.collection { padding-bottom: 120px; }
.collection-heading { align-items: flex-start; }
.collection-side { display: flex; flex-direction: column; gap: 18px; max-width: 380px; }
.collection-side p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.75; }

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.filter-chip {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.filter-chip:hover { border-color: var(--ink); color: var(--ink); }
.filter-chip.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px 22px;
  transition: opacity 0.2s ease;
}

.product-grid.is-swapping { opacity: 0.45; }

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid rgba(13, 24, 32, 0.07);
  border-radius: 18px;
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.product-card:hover {
  box-shadow: 0 22px 45px rgba(13, 24, 32, 0.09);
  transform: translateY(-3px);
}

.product-image {
  position: relative;
  display: block;
  border-radius: 0;
  overflow: hidden;
  background: #f4f1ea;
  aspect-ratio: 1 / 1;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  transition: transform 0.5s var(--ease);
}

.product-card:hover .product-image img { transform: scale(1.05); }

.product-badge {
  position: absolute;
  z-index: 2;
  top: 12px;
  left: 12px;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font: 8px var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 1px 0 rgba(13, 24, 32, 0.06);
}

.product-card-content { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }

.product-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.product-card h3 {
  font-size: 17px;
  letter-spacing: -0.045em;
  line-height: 1.2;
  margin: 0 0 7px;
}

.product-card h3 a:hover { color: var(--blue-deep); }

.product-card p {
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.product-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 16px; }

.product-tags span {
  padding: 5px 9px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: rgba(13, 24, 32, 0.055);
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 500;
}

.product-bottom {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-view-link {
  margin-right: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
}

.product-view-link span { display: inline-block; transition: transform 0.2s ease; }
.product-view-link:hover span { transform: translate(3px, -3px); }

.product-quick-link {
  width: 44px;
  height: 44px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  font-size: 14px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.product-quick-link:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.add-to-cart {
  padding: 13px 20px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  font-weight: 800;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.add-to-cart:hover { background: var(--blue-deep); border-color: var(--blue-deep); color: var(--paper); }
.add-to-cart.is-added { background: var(--lime); border-color: var(--lime); color: var(--ink); }

/* 编辑区 */
.editorial {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
  padding-bottom: 124px;
}

.editorial-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-deep);
  aspect-ratio: 4 / 3.4;
}

.editorial-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6%;
  mix-blend-mode: multiply;
}

.editorial-note {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255, 253, 249, 0.92);
  backdrop-filter: blur(5px);
}

.editorial-note span { display: block; color: var(--ink-soft); font: 9px var(--mono); margin-bottom: 6px; }
.editorial-note strong { font-size: 15px; letter-spacing: -0.05em; line-height: 1.1; display: block; }

.editorial-copy h2 {
  font-size: clamp(38px, 4.4vw, 66px);
  margin: 22px 0 22px;
}

.editorial-copy p {
  max-width: 430px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.editorial-quote {
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  max-width: 400px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

/* 订阅 */
.newsletter {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  padding-top: 74px;
  padding-bottom: 92px;
  border-top: 1px solid var(--line);
}

.newsletter h2 { font-size: clamp(38px, 4.4vw, 64px); margin: 22px 0 0; }

.newsletter-form { display: flex; flex-direction: column; gap: 12px; }
.newsletter-form label { color: var(--ink-soft); font: 10px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }

.input-line {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 10px;
}

.input-line input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 6px 0;
  font-size: 15px;
  outline: none;
}

.input-line input::placeholder { color: rgba(86, 98, 106, 0.65); }

.input-line button {
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--lime);
  font-size: 14px;
  transition: transform 0.2s var(--ease);
}

.input-line button:hover { transform: translate(2px, -2px); }
.newsletter-form p { margin: 0; color: var(--ink-soft); font-size: 11px; }

/* 页脚 */
.footer {
  border-top: 1px solid var(--line);
  padding-top: 54px;
  padding-bottom: 34px;
}

.footer-main {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 46px;
  border-bottom: 1px solid var(--line);
}

.footer-wordmark { font-size: 40px; }
.footer-main p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.7; }

.footer-contact {
  font-size: 12px;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
  white-space: nowrap;
}

.footer-links { display: flex; gap: 90px; padding: 40px 0 46px; }
.footer-links > div { display: flex; flex-direction: column; gap: 9px; }

.footer-label {
  color: var(--ink-soft);
  font: 9px var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.footer-links a { font-size: 12px; font-weight: 600; color: rgba(13, 24, 32, 0.78); }
.footer-links a:hover { color: var(--blue-deep); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font: 9px var(--mono);
  letter-spacing: 0.03em;
}

/* ---------- 4. 抽屉 / 结算 / Toast ---------- */

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(13, 24, 32, 0.42);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-backdrop.open { opacity: 1; pointer-events: auto; }

.cart-drawer {
  position: fixed;
  z-index: 45;
  top: 0;
  right: 0;
  height: 100%;
  width: min(430px, 100%);
  display: flex;
  flex-direction: column;
  background: var(--white);
  transform: translateX(102%);
  transition: transform 0.4s var(--ease);
  box-shadow: -20px 0 60px rgba(13, 24, 32, 0.14);
}

.cart-drawer.open { transform: translateX(0); }

.drawer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 26px 24px 20px;
  border-bottom: 1px solid var(--line);
}

.drawer-header h2 { font-size: 26px; margin: 10px 0 0; display: flex; align-items: baseline; gap: 8px; }
.drawer-header h2 span { color: var(--blue-deep); font: 12px var(--mono); }

.close-button {
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  font-size: 17px;
  line-height: 1;
  transition: background 0.2s ease;
}

.close-button:hover { background: var(--paper); }

.drawer-body { flex: 1; overflow-y: auto; padding: 20px 24px; }

.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 46px 0;
}
.empty-cart strong { font-size: 17px; letter-spacing: -0.04em; }
.empty-cart span { color: var(--ink-soft); font-size: 12px; }
.empty-cart .underlined-link { margin-top: 16px; font-size: 11px; border: 0; padding: 0; color: var(--ink-soft); }

.cart-line {
  display: grid;
  grid-template-columns: 74px 1fr auto;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.cart-line-image { border-radius: 10px; background: var(--paper); overflow: hidden; aspect-ratio: 1; }
.cart-line-image img { width: 100%; height: 100%; object-fit: contain; padding: 8%; mix-blend-mode: multiply; }
.cart-line-info p { margin: 0 0 3px; color: var(--ink-soft); font: 8px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }
.cart-line-info h3 { font-size: 13px; letter-spacing: -0.03em; margin: 0 0 10px; line-height: 1.3; }

.qty-control {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.qty-control button { width: 26px; height: 26px; display: grid; place-items: center; font-size: 13px; color: var(--ink-soft); }
.qty-control button:hover { background: var(--paper); color: var(--ink); }
.qty-control span { min-width: 20px; text-align: center; font: 11px var(--mono); }

.cart-line-side { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.cart-line-total { font-size: 13px; font-weight: 700; letter-spacing: -0.03em; }
.remove-line { font-size: 10px; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; }
.remove-line:hover { color: var(--ink); }

.drawer-footer { padding: 18px 24px 24px; border-top: 1px solid var(--line); background: var(--white); }
.subtotal-row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.subtotal-row span { color: var(--ink-soft); font: 10px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }
.subtotal-row strong { font-size: 20px; letter-spacing: -0.05em; }
.demo-note { margin: 0 0 16px; color: var(--ink-soft); font: 9px var(--mono); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(13, 24, 32, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.open { opacity: 1; pointer-events: auto; }

.checkout-modal {
  position: fixed;
  z-index: 55;
  top: 50%;
  left: 50%;
  width: min(560px, calc(100% - 32px));
  max-height: 92vh;
  overflow-y: auto;
  padding: 26px 28px 30px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 30px 80px rgba(13, 24, 32, 0.3);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -46%) scale(0.97);
  transition: opacity 0.28s ease, transform 0.28s var(--ease);
}

.checkout-modal.open { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%) scale(1); }

.checkout-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.checkout-header h2 { font-size: 30px; margin: 9px 0 0; }

.checkout-steps {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.checkout-steps span { display: inline-flex; align-items: center; gap: 6px; transition: color 0.2s ease; }
.checkout-steps span b { font-weight: 500; }
.checkout-steps span.active { color: var(--ink); }
.checkout-steps span.done { color: var(--lime-dark); }
.checkout-steps i { flex: 1; height: 1px; background: var(--line); }

.checkout-form { display: flex; flex-direction: column; gap: 14px; }
[data-checkout-panel] { display: flex; flex-direction: column; gap: 14px; }
.checkout-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.checkout-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.checkout-form input {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  padding: 12px 13px;
  font-size: 13px;
  font-family: var(--display);
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.checkout-form input:focus { border-color: var(--ink); background: var(--white); }
.checkout-form input::placeholder { color: rgba(86, 98, 106, 0.55); }

.checkout-divider {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 6px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.payment-icons { color: rgba(86, 98, 106, 0.75); }

.card-input { position: relative; display: flex; align-items: center; }
.card-input input { flex: 1; padding-right: 40px; }
.card-input > span { position: absolute; right: 13px; display: flex; align-items: center; color: var(--ink-soft); pointer-events: none; }
.card-input > span svg { display: block; }

.checkout-summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 0 4px;
  border-top: 1px solid var(--line);
  margin-top: 4px;
}

.checkout-summary span { color: var(--ink-soft); font: 10px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }
.checkout-summary strong { font-size: 20px; letter-spacing: -0.05em; }

.secure-line { margin: 2px 0 0; text-align: center; color: var(--ink-soft); font: 9px var(--mono); }

.checkout-actions { display: flex; gap: 10px; margin-top: 6px; }
.checkout-actions .button { flex: 1; }

.checkout-success { text-align: center; padding: 18px 0 8px; }
.success-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--ink);
  font-size: 24px;
  animation: pop 0.45s var(--ease);
}

@keyframes pop {
  0% { transform: scale(0.4); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.checkout-success .eyebrow { justify-content: center; }
.checkout-success h3 { font-size: 28px; letter-spacing: -0.06em; margin: 14px 0 10px; }
.checkout-success p { color: var(--ink-soft); font-size: 12px; line-height: 1.7; max-width: 330px; margin: 0 auto 22px; }
.checkout-success p strong { color: var(--ink); font-family: var(--mono); }

.toast {
  position: fixed;
  z-index: 60;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 20px);
  max-width: calc(100% - 32px);
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s var(--ease);
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 38;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  box-shadow: 0 12px 24px rgba(13, 24, 32, 0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s ease, color 0.2s ease, visibility 0.25s ease;
}

.back-to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { background: var(--lime); color: var(--ink); }
.back-to-top svg { display: block; }

/* ---------- 5. 商品详情页 ---------- */

.product-detail {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  padding-top: 26px;
  padding-bottom: 100px;
  align-items: start;
}

.detail-gallery-label {
  display: flex;
  justify-content: space-between;
  color: var(--ink-soft);
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.detail-main-image {
  position: relative;
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
  aspect-ratio: 1;
}

.detail-main-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8%;
  mix-blend-mode: multiply;
}

.detail-thumbs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.detail-thumb {
  border-radius: 10px;
  overflow: hidden;
  background: var(--white);
  aspect-ratio: 1;
  border: 1px solid transparent;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.detail-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 8%; mix-blend-mode: multiply; }
.detail-thumb:hover { transform: translateY(-2px); }
.detail-thumb.active { border-color: var(--ink); }

.product-detail-copy { padding-top: 26px; }
.product-detail-copy .eyebrow { margin-bottom: 16px; }

.product-detail-copy h1 {
  font-size: clamp(34px, 3.6vw, 54px);
  margin-bottom: 10px;
}

.detail-product-name { color: var(--ink-soft); font-size: 13px; margin-bottom: 18px; }

.detail-price {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.06em;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.detail-description { color: var(--ink-soft); font-size: 14px; line-height: 1.8; max-width: 420px; margin-bottom: 26px; }
.detail-add-button { min-width: 220px; }

.detail-note {
  margin-top: 16px;
  color: var(--ink-soft);
  font: 9px var(--mono);
  line-height: 1.6;
  max-width: 340px;
}

.product-specs { padding-bottom: 100px; }

.product-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 40px;
  border-top: 1px solid var(--line);
}

.product-bullets li { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.product-bullets li span { color: var(--ink-soft); font: 10px var(--mono); flex: none; padding-top: 3px; }
.product-bullets li p { margin: 0; font-size: 13px; line-height: 1.7; }
.product-bullets li p strong { font-weight: 700; color: var(--ink); }

.product-detail-cta {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding-top: 54px;
  padding-bottom: 90px;
  border-top: 1px solid var(--line);
}

.product-detail-cta h2 { font-size: clamp(36px, 4vw, 58px); margin: 20px 0 0; }

/* ---------- 6. 服务内页 ---------- */

.service-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1400px, calc(100% - 112px));
  margin: 0 auto 26px;
  padding: 11px 16px;
  border-radius: 999px;
  font: 9px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.service-banner-blue { background: rgba(117, 169, 255, 0.16); color: var(--blue-deep); }
.service-banner-cloud { background: rgba(66, 111, 174, 0.12); color: #2768dc; }
.service-banner a { color: inherit; }
.service-banner b { margin-left: 6px; }

/* 通用服务 Hero（Marketing） */
.service-page-hero {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  align-items: center;
  gap: 50px;
  padding-top: 30px;
  padding-bottom: 90px;
}

.service-page-copy h1 { font-size: clamp(42px, 5vw, 74px); margin: 26px 0 24px; }
.service-page-copy h1 em { font-style: normal; color: var(--blue-deep); }
.service-page-copy p { max-width: 440px; color: var(--ink-soft); font-size: 14px; line-height: 1.78; margin-bottom: 28px; }

.service-page-art {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3.4;
  background: linear-gradient(150deg, #dcebf6, #eae6dc);
  display: grid;
  place-items: center;
}

.service-page-art img {
  width: 72%;
  object-fit: contain;
  mix-blend-mode: multiply;
  position: relative;
  z-index: 2;
}

.art-grid {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image: linear-gradient(rgba(13, 24, 32, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(13, 24, 32, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 20%, transparent 80%);
}

.art-sticker {
  position: absolute;
  z-index: 3;
  left: 18px;
  top: 18px;
  padding: 12px 15px;
  border-radius: 12px;
  background: rgba(255, 253, 249, 0.92);
  font: 9px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.art-sticker strong { font-size: 14px; letter-spacing: -0.04em; text-transform: none; }

.art-caption {
  position: absolute;
  z-index: 3;
  right: 18px;
  bottom: 18px;
  text-align: right;
  color: rgba(13, 24, 32, 0.55);
  font: 9px/1.6 var(--mono);
}

/* 服务介绍条 */
.service-intro {
  display: grid;
  grid-template-columns: 0.35fr 1fr 0.6fr;
  gap: 40px;
  align-items: start;
  padding-top: 80px;
  padding-bottom: 80px;
  border-top: 1px solid var(--line);
}

.big-index {
  color: var(--paper-deep);
  font-size: clamp(90px, 12vw, 160px);
  font-weight: 800;
  letter-spacing: -0.09em;
  line-height: 0.8;
  -webkit-text-stroke: 1px rgba(13, 24, 32, 0.16);
}

.service-intro h2 { font-size: clamp(34px, 3.8vw, 54px); margin: 20px 0 18px; }
.service-intro p { max-width: 420px; color: var(--ink-soft); font-size: 13px; line-height: 1.78; margin: 0; }

.service-stat-list { display: flex; flex-direction: column; gap: 0; }
.service-stat-list div { display: flex; gap: 14px; align-items: baseline; padding: 13px 0; border-bottom: 1px solid var(--line); }
.service-stat-list strong { color: var(--ink-soft); font: 9px var(--mono); }
.service-stat-list span { font-size: 13px; font-weight: 600; letter-spacing: -0.03em; }

.partner-brand-note {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
  padding: 12px 15px;
  border: 1px solid rgba(13, 24, 32, 0.16);
  border-left: 4px solid var(--blue-deep);
  background: rgba(255, 253, 249, 0.65);
}

.partner-brand-note > span { color: var(--blue-deep); font: 10px var(--mono); font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap; }
.partner-brand-note p { color: var(--ink-soft); font-size: 11px; margin: 0; }

.service-callout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 40px 60px;
  margin-top: 60px;
  margin-bottom: 100px;
  padding: 46px 44px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
}

.service-callout .eyebrow { color: rgba(244, 241, 235, 0.6); }
.service-callout h2 { font-size: clamp(32px, 3.6vw, 52px); margin: 18px 0 0; }
.service-callout h2 span { color: var(--lime); }
.service-callout > p { grid-column: 1; max-width: 420px; margin: 0; color: rgba(244, 241, 235, 0.66); font-size: 12px; line-height: 1.7; }
.service-callout > .button { grid-column: 2; grid-row: 1 / span 2; align-self: end; }

/* 传输 / 云 Hero */
.transmission-hero,
.technology-hero {
  min-height: 640px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
  background: var(--white);
}

.transmission-copy,
.technology-copy { align-self: center; padding: 40px 42px 62px 58px; }
.transmission-copy .breadcrumb,
.technology-copy .breadcrumb { margin-bottom: 52px; }
.transmission-copy h1,
.technology-copy h1 { max-width: 610px; margin: 23px 0 22px; font-size: clamp(40px, 5vw, 72px); }
.transmission-copy h1 em { font-style: normal; color: var(--blue-deep); }
.technology-copy h1 em { font-style: normal; color: #2768dc; }
.transmission-copy p,
.technology-copy p { max-width: 440px; color: var(--ink-soft); line-height: 1.78; font-size: 13px; margin-bottom: 29px; }
.service-hero-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }

/* 网络可视化 */
.network-visual {
  min-height: 640px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 52% 47%, #1c425c 0, #102c40 34%, #0c1c2a 76%);
}

.network-grid,
.architecture-grid {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: linear-gradient(rgba(127, 190, 232, 0.15) 1px, transparent 1px), linear-gradient(90deg, rgba(127, 190, 232, 0.15) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 15%, transparent 78%);
}

.network-visual::before,
.network-visual::after {
  content: '';
  position: absolute;
  border: 1px solid rgba(137, 201, 239, 0.18);
  border-radius: 50%;
}

.network-visual::before { inset: 14% 10%; transform: rotate(-18deg) scaleY(0.55); }
.network-visual::after { inset: 25% 2%; border-color: rgba(137, 201, 239, 0.12); transform: rotate(21deg) scaleY(0.55); }

.network-route {
  position: absolute;
  z-index: 1;
  height: 1px;
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(216, 255, 104, 0.05), rgba(216, 255, 104, 0.9), rgba(117, 169, 255, 0.25));
  box-shadow: 0 0 11px rgba(216, 255, 104, 0.32);
}

.network-route i {
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(216, 255, 104, 0.12);
  animation: pulse 2.4s ease-in-out infinite;
}

.route-a { width: 220px; left: 8%; top: 39%; transform: rotate(10deg); }
.route-b { width: 245px; left: 27%; top: 39%; transform: rotate(-22deg); }
.route-c { width: 232px; left: 53%; top: 41%; transform: rotate(-10deg); }
.route-d { width: 238px; left: 51%; top: 57%; transform: rotate(22deg); }

.network-node {
  position: absolute;
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: rgba(244, 241, 235, 0.78);
  font: 8px var(--mono);
  letter-spacing: 0.04em;
}

.network-node span {
  width: 14px;
  height: 14px;
  margin-bottom: 4px;
  border: 1px solid var(--lime);
  border-radius: 50%;
  background: #112d41;
  box-shadow: 0 0 0 5px rgba(216, 255, 104, 0.08), 0 0 19px rgba(216, 255, 104, 0.45);
}

.network-node strong { color: var(--white); font-weight: 500; }
.network-node small { color: rgba(244, 241, 235, 0.48); font: 8px var(--mono); text-transform: uppercase; }

.node-source { left: 8%; top: 34%; }
.node-east { right: 10%; top: 36%; }
.node-west { left: 18%; bottom: 21%; }
.node-north { right: 20%; bottom: 24%; }

.network-core {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 47%;
  width: 165px;
  height: 165px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(216, 255, 104, 0.6);
  border-radius: 50%;
  background: rgba(10, 28, 41, 0.72);
  color: var(--white);
  text-align: center;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 17px rgba(216, 255, 104, 0.035), 0 0 0 42px rgba(117, 169, 255, 0.035), inset 0 0 34px rgba(117, 169, 255, 0.15);
}

.network-core::before {
  content: '';
  position: absolute;
  inset: 11px;
  border: 1px dashed rgba(117, 169, 255, 0.47);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

.network-core span { color: var(--lime); font-size: 19px; font-weight: 800; letter-spacing: -0.08em; }
.network-core strong { font: 10px/1.3 var(--mono); letter-spacing: 0.04em; }
.network-core small { color: rgba(244, 241, 235, 0.55); font: 8px var(--mono); }

.network-packet {
  position: absolute;
  z-index: 5;
  padding: 7px 9px;
  border: 1px solid rgba(216, 255, 104, 0.48);
  border-radius: 4px;
  background: rgba(13, 24, 32, 0.72);
  color: var(--lime);
  font: 9px var(--mono);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.packet-a { left: 23%; top: 32%; transform: rotate(-12deg); }
.packet-b { right: 13%; bottom: 31%; transform: rotate(12deg); }

.network-label { position: absolute; z-index: 3; color: rgba(244, 241, 235, 0.43); font: 8px var(--mono); letter-spacing: 0.05em; }
.label-source { left: 8%; bottom: 11%; }
.label-destination { right: 8%; top: 17%; }
.network-caption { position: absolute; z-index: 4; right: 25px; bottom: 25px; color: rgba(244, 241, 235, 0.52); font: 9px var(--mono); }

/* 云架构可视化 */
.cloud-architecture {
  min-height: 640px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 48% 35%, #3d8de0 0, #165eb7 27%, #0c3470 67%, #081c42 100%);
}

.cloud-architecture::before,
.cloud-architecture::after {
  content: '';
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
}

.cloud-architecture::before { width: 74%; height: 42%; left: 14%; top: 24%; transform: rotate(-18deg); }
.cloud-architecture::after { width: 104%; height: 56%; left: -1%; top: 18%; border-color: rgba(255, 255, 255, 0.11); transform: rotate(19deg); }

.architecture-cloud {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 29%;
  width: 224px;
  height: 132px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid rgba(216, 255, 104, 0.72);
  border-radius: 50%;
  background: rgba(8, 30, 66, 0.78);
  color: var(--white);
  transform: translateX(-50%);
  box-shadow: 0 0 0 10px rgba(216, 255, 104, 0.04), 0 18px 32px rgba(0, 0, 0, 0.22);
}

.architecture-cloud::before {
  content: '';
  position: absolute;
  inset: -24px;
  border: 1px dashed rgba(216, 255, 104, 0.32);
  border-radius: 50%;
}

.architecture-cloud::after { content: none; }
.architecture-cloud i { display: none; }

.architecture-cloud span { position: relative; z-index: 2; color: var(--lime); font-size: 19px; font-weight: 800; letter-spacing: -0.08em; }
.architecture-cloud strong { position: relative; z-index: 2; font: 8px var(--mono); letter-spacing: 0.06em; color: rgba(244, 241, 235, 0.72); }

.architecture-rack {
  position: absolute;
  z-index: 3;
  bottom: 14%;
  width: 112px;
  height: 146px;
  padding: 15px 12px 26px;
  border: 1px solid rgba(216, 255, 104, 0.22);
  border-radius: 8px;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.16), rgba(7, 24, 56, 0.66));
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.28);
}

.rack-a { left: 11%; transform: perspective(420px) rotateY(7deg); }
.rack-b { right: 11%; transform: perspective(420px) rotateY(-7deg); }

.architecture-rack span {
  position: relative;
  display: block;
  height: 13px;
  margin-bottom: 9px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.14);
}

.architecture-rack span::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 24%;
  border-radius: 3px;
  background: var(--lime);
  opacity: 0.8;
}

.architecture-rack b { position: absolute; left: 12px; bottom: 10px; color: rgba(255, 255, 255, 0.55); font: 8px var(--mono); letter-spacing: 0.05em; }

.architecture-node {
  position: absolute;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 7px 10px;
  border: 1px solid rgba(216, 255, 104, 0.26);
  border-radius: 999px;
  background: rgba(6, 24, 56, 0.62);
  color: rgba(255, 255, 255, 0.78);
  font: 9px var(--mono);
  letter-spacing: 0.04em;
}

.architecture-node i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(216, 255, 104, 0.14);
}

.arch-node-a { left: 10%; top: 11%; }
.arch-node-b { right: 10%; top: 11%; }
.arch-node-c { left: 50%; bottom: 4%; transform: translateX(-50%); }

.architecture-label { position: absolute; right: 24px; bottom: 23px; color: rgba(255, 255, 255, 0.42); font: 9px var(--mono); letter-spacing: 0.08em; }

/* 服务范围 */
.service-scope { padding-top: 120px; padding-bottom: 110px; }

.scope-intro { display: grid; grid-template-columns: 0.28fr 1fr; gap: 44px; align-items: start; margin-bottom: 54px; }

.scope-number {
  color: transparent;
  font-size: clamp(52px, 7vw, 96px);
  font-weight: 800;
  letter-spacing: -0.09em;
  line-height: 0.85;
  -webkit-text-stroke: 1px rgba(13, 24, 32, 0.2);
}

.scope-intro h2 { font-size: clamp(34px, 4vw, 58px); margin: 20px 0 18px; }
.scope-38 .scope-intro h2 span { color: var(--blue-deep); }
.scope-42 .scope-intro h2 span { color: #2768dc; }
.scope-intro p { max-width: 520px; color: var(--ink-soft); font-size: 13px; line-height: 1.78; margin: 0; }

.scope-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.scope-card-grid article { padding: 18px 0 0; border-top: 1px solid var(--line); }
.scope-card-grid article strong { color: var(--ink-soft); font: 9px var(--mono); letter-spacing: 0.05em; }
.scope-card-grid h3 { font-size: 16px; letter-spacing: -0.04em; line-height: 1.25; margin: 26px 0 10px; }
.scope-card-grid p { margin: 0; color: var(--ink-soft); font-size: 11px; line-height: 1.65; }

/* 指示器 / 指标 */
.service-indicators,
.technology-metrics {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 70px;
  align-items: start;
  padding: 76px clamp(26px, 3.6vw, 56px) 78px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
}

.technology-metrics { background: #16365c; }

.indicator-heading h2,
.metric-heading h2 { font-size: clamp(34px, 4vw, 60px); margin: 21px 0 17px; }
.indicator-heading h2 span,
.metric-heading h2 span { color: var(--lime); }
.indicator-heading p,
.metric-heading p { max-width: 330px; color: rgba(244, 241, 235, 0.62); font-size: 11px; line-height: 1.7; margin: 0; }
.indicator-heading .eyebrow,
.metric-heading .eyebrow { color: rgba(244, 241, 235, 0.58); }

.indicator-grid,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 24px;
  border-top: 1px solid rgba(244, 241, 235, 0.2);
}

.indicator-grid article,
.metric-grid article { padding: 18px 0 20px; border-bottom: 1px solid rgba(244, 241, 235, 0.2); }
.indicator-grid article > span,
.metric-grid article > span { color: rgba(244, 241, 235, 0.54); font: 9px var(--mono); letter-spacing: 0.05em; }
.indicator-grid article strong { display: block; margin: 19px 0 8px; color: var(--lime); font-size: 34px; letter-spacing: -0.08em; }
.indicator-grid article p,
.metric-grid article p { max-width: 190px; color: rgba(244, 241, 235, 0.61); font-size: 11px; line-height: 1.55; margin: 0; }

.metric-grid article strong { display: block; margin: 18px 0 8px; color: var(--lime); font-size: 27px; letter-spacing: -0.06em; }
.consultation-button { grid-column: 2; justify-self: start; margin-top: 28px; }

/* 原理 / 技术服务 */
.transmission-principles,
.technology-services {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 120px;
}

.principle-visual {
  min-height: 380px;
  position: relative;
  display: grid;
  place-items: center;
  background: #dcebf6;
  border-radius: var(--radius);
  overflow: hidden;
}

.principle-visual::before {
  content: '';
  position: absolute;
  width: 62%;
  aspect-ratio: 1;
  border: 1px solid rgba(66, 111, 174, 0.16);
  border-radius: 50%;
}

.principle-orbit {
  position: absolute;
  width: 78%;
  height: 38%;
  border: 1px solid rgba(66, 111, 174, 0.36);
  border-radius: 50%;
  transform: rotate(-25deg);
}

.orbit-38-b { width: 96%; transform: rotate(26deg); border-color: rgba(66, 111, 174, 0.19); }

.principle-core {
  position: relative;
  z-index: 2;
  width: 152px;
  height: 152px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 9px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  box-shadow: 0 15px 30px rgba(13, 24, 32, 0.19);
}

.principle-core span { color: var(--lime); font-size: 36px; font-weight: 800; letter-spacing: -0.08em; }
.principle-core strong { font: 9px/1.25 var(--mono); }

.principle-node {
  position: absolute;
  z-index: 3;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 7px rgba(216, 255, 104, 0.2);
}

.principle-node::after {
  content: attr(data-label);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  font: 9px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(19, 44, 76, 0.62);
}

.p-node-a { left: 15%; top: 30%; }
.p-node-a::after { left: 22px; }
.p-node-b { right: 15%; top: 24%; background: var(--blue-deep); box-shadow: 0 0 0 7px rgba(66, 111, 174, 0.18); }
.p-node-b::after,
.p-node-c::after { right: 22px; }
.p-node-c { right: 22%; bottom: 21%; }

.principle-caption {
  position: absolute;
  z-index: 3;
  left: 26px;
  bottom: 22px;
  font: 9px var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(19, 44, 76, 0.45);
}

.principle-caption i { font-style: normal; color: rgba(19, 44, 76, 0.3); padding: 0 2px; }

.principle-copy h2,
.technology-service-copy h2 { font-size: clamp(36px, 4.4vw, 64px); margin: 21px 0 22px; }
.principle-copy h2 span,
.technology-service-copy h2 span { color: var(--blue-deep); }
.principle-copy p,
.technology-service-copy p { max-width: 430px; color: var(--ink-soft); line-height: 1.75; font-size: 13px; }

.term-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 26px; }
.term-list span { padding: 6px 11px; border: 1px solid var(--line); border-radius: 999px; font: 9px var(--mono); color: var(--ink-soft); }

.technology-service-map {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 25px;
  border-top: 1px solid var(--line);
}

.technology-service-map > div { min-height: 140px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.technology-service-map strong { display: block; color: #2768dc; font: 10px var(--mono); }
.technology-service-map span { display: block; margin-top: 36px; font-size: 16px; font-weight: 700; letter-spacing: -0.04em; }
.technology-service-map i { display: block; width: 58px; height: 1px; margin-top: 13px; background: #2768dc; }

/* 条款 / 能力清单 */
.service-terms,
.technical-terms {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
  margin-top: clamp(48px, 5.6vw, 84px);
  padding: 74px clamp(26px, 3.6vw, 56px);
  border-radius: var(--radius);
  background: var(--white);
}

.terms-heading h2 { font-size: clamp(32px, 3.6vw, 52px); margin: 20px 0 0; }
.terms-heading h2 span,
.technical-terms h2 span { color: var(--blue-deep); }
.terms-copy p { color: var(--ink-soft); font-size: 13px; margin-bottom: 16px; }
.terms-copy ul { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
.terms-copy li { padding: 11px 0 11px 16px; border-bottom: 1px solid var(--line); font-size: 12px; line-height: 1.6; position: relative; }
.terms-copy li::before { content: '↗'; position: absolute; left: 0; color: var(--lime-dark); font-size: 10px; }

/* FAQ */
.faq-section { padding-top: 96px; padding-bottom: 96px; }
.faq-section h2 { font-size: clamp(34px, 4vw, 58px); margin: 20px 0 34px; }
.faq-section h2 span { color: var(--blue-deep); }
.faq-list { border-top: 1px solid var(--line); max-width: 880px; }

.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.03em;
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { color: var(--ink-soft); font-size: 16px; transition: transform 0.25s var(--ease); }
.faq-item[open] summary span { transform: rotate(45deg); }
.faq-item p { margin: 0 0 22px; max-width: 700px; color: var(--ink-soft); font-size: 13px; line-height: 1.75; }

/* 场景图 */
.terminal-scenes,
.industry-scenes { padding-top: 100px; padding-bottom: 110px; }
.terminal-scene-grid,
.industry-scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.terminal-scene-grid article,
.industry-scene-grid article { display: flex; flex-direction: column; gap: 6px; }

.terminal-image,
.industry-image {
  height: 300px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 15px;
  background: #dcebf6;
}

.terminal-scene-grid article:nth-child(2) .terminal-image,
.industry-scene-grid article:nth-child(2) .industry-image { background: #e9e3d7; }

.terminal-image img,
.industry-image img { width: 82%; height: 88%; object-fit: contain; mix-blend-mode: multiply; }

.terminal-scene-grid article > span,
.industry-scene-grid article > span { margin-top: 9px; color: var(--ink-soft); font: 9px var(--mono); text-transform: uppercase; }
.terminal-scene-grid article > strong,
.industry-scene-grid article > strong { font-size: 16px; letter-spacing: -0.05em; }

.industry-image { height: 315px; }

/* ---------- 7. 动效 / 响应式 ---------- */

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

.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in-view { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track { animation: none; }
  .network-core::before { animation: none; }
}

@media (max-width: 1180px) {
  .section-pad,
  .topbar,
  .service-banner { width: calc(100% - 64px); }

  .hero { grid-template-columns: 1fr; min-height: auto; padding-bottom: 46px; }
  .hero-copy { padding-left: 0; }
  .hero-visual { min-height: 470px; }
  .hero-mini-product { width: 140px; left: 2%; }

  .service-grid { grid-template-columns: 1fr 1fr; }
  .service-card { min-height: 360px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .editorial { grid-template-columns: 1fr; gap: 40px; }
  .newsletter { grid-template-columns: 1fr; gap: 34px; align-items: start; }

  .service-page-hero { grid-template-columns: 1fr; gap: 36px; }
  .service-intro { grid-template-columns: 1fr; gap: 26px; }
  .service-intro .big-index { display: none; }
  .scope-card-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .service-indicators,
  .technology-metrics { grid-template-columns: 1fr; gap: 40px; }
  .consultation-button { grid-column: 1; }
  .transmission-hero,
  .technology-hero { grid-template-columns: 1fr; border-radius: 0; }
  .network-visual,
  .cloud-architecture { min-height: 470px; }

  .cloud-architecture { min-height: 560px; }
  .transmission-principles,
  .technology-services { grid-template-columns: 1fr; gap: 40px; }
  .service-terms,
  .technical-terms { grid-template-columns: 1fr; gap: 30px; }
  .product-detail { grid-template-columns: 1fr; gap: 34px; }
  .product-bullets { grid-template-columns: 1fr; }
  .service-callout { grid-template-columns: 1fr; padding: 38px 30px; }
  .service-callout > .button { grid-column: 1; grid-row: auto; }
  .footer-links { gap: 60px; }
}

@media (max-width: 780px) {
  .section-pad,
  .topbar,
  .service-banner { width: calc(100% - 36px); }

  .topbar { height: 74px; }
  .wordmark { font-size: 24px; }

  .menu-toggle { display: block; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 18px 18px;
    border-radius: 16px;
    background: var(--white);
    box-shadow: var(--shadow-soft);
    margin: 0;
  }

  .topbar.menu-open .primary-nav { display: flex; }
  .primary-nav a { padding: 9px 0; font-size: 14px; }
  .primary-nav a.active::after { display: none; }
  .topbar-actions { gap: 16px; margin-left: auto; }
  .text-link { display: none; }

  .hero { padding-top: 18px; padding-bottom: 30px; gap: 24px; }
  .hero h1 { font-size: clamp(46px, 13vw, 76px); margin: 20px 0 18px; }
  .hero-intro { font-size: 14px; margin-bottom: 26px; }
  .hero-proof { margin-top: 40px; gap: 24px; flex-wrap: wrap; }
  .hero-visual { min-height: 380px; }
  .hero-mini-product { display: none; }
  .hero-signal-card { top: 2%; right: 2%; padding: 10px 12px; }
  .hero-coordinate { display: none; }
  .hero-main-product { width: 82%; padding: 12px; }

  .ticker-track span { font-size: 9px; letter-spacing: 0.14em; }

  .services { padding-top: 74px; padding-bottom: 70px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 22px; margin-bottom: 34px; }
  .section-heading h2 { font-size: clamp(36px, 10vw, 54px); }
  .service-grid { grid-template-columns: 1fr; gap: 12px; }
  .service-card { min-height: 320px; padding: 20px 20px 24px; }
  .service-icon { height: 108px; }

  .collection { padding-bottom: 70px; }
  .product-grid { grid-template-columns: 1fr; gap: 34px; }
  .back-to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .product-card-content { padding: 16px 16px 18px; }
  .product-price { font-size: 20px; }
  .product-quick-link { width: 40px; height: 40px; }
  .add-to-cart { padding: 11px 16px; }
  .editorial { padding-bottom: 74px; }
  .editorial-copy h2 { font-size: clamp(32px, 9.4vw, 48px); }
  .editorial-quote { margin-top: 30px; }

  .newsletter { padding-top: 54px; padding-bottom: 60px; }
  .newsletter h2 { font-size: clamp(32px, 9vw, 48px); }

  .footer { padding-top: 40px; padding-bottom: 26px; }
  .footer-main { flex-direction: column; gap: 18px; padding-bottom: 30px; }
  .footer-wordmark { font-size: 32px; }
  .footer-links { flex-direction: column; gap: 26px; padding: 30px 0; }
  .footer-bottom { flex-direction: column; gap: 7px; }

  .cart-drawer { width: 100%; }
  .checkout-modal { padding: 22px 18px 24px; max-height: 94vh; }
  .checkout-header h2 { font-size: 24px; }
  .checkout-grid { grid-template-columns: 1fr; }

  .product-detail { padding-bottom: 60px; }
  .detail-thumbs { grid-template-columns: repeat(5, 1fr); }
  .product-detail-copy h1 { font-size: clamp(30px, 9vw, 42px); }
  .product-detail-cta { flex-direction: column; align-items: flex-start; gap: 24px; padding-bottom: 60px; }

  .service-banner { margin-bottom: 18px; padding: 10px 14px; font-size: 8px; }
  .service-page-hero { padding-bottom: 60px; }
  .service-page-copy h1 { font-size: clamp(36px, 10vw, 54px); }

  .transmission-hero,
  .technology-hero { min-height: auto; }
  .transmission-copy,
  .technology-copy { padding: 28px 20px 44px; }
  .transmission-copy .breadcrumb,
  .technology-copy .breadcrumb { margin-bottom: 46px; }
  .transmission-copy h1,
  .technology-copy h1 { font-size: clamp(32px, 9.6vw, 48px); }
  .network-visual,
  .cloud-architecture { min-height: 420px; }

  .cloud-architecture { min-height: 520px; }
  .architecture-cloud { top: 23%; width: 190px; height: 112px; }
  .architecture-cloud span { font-size: 17px; }
  .architecture-rack { bottom: 11%; }
  .architecture-node { padding: 6px 10px 6px 9px; font-size: 8px; }
  .arch-node-c { bottom: 3%; }
  .network-core { width: 126px; height: 126px; }
  .network-core span { font-size: 16px; }

  .service-scope { padding-top: 74px; padding-bottom: 74px; }
  .scope-intro { grid-template-columns: 1fr; gap: 20px; margin-bottom: 34px; }
  .scope-number { font-size: 46px; }
  .scope-card-grid { grid-template-columns: 1fr; gap: 0; }
  .scope-card-grid article { padding-bottom: 22px; }
  .scope-card-grid h3 { margin: 20px 0 8px; }

  .service-indicators,
  .technology-metrics { padding: 46px 24px 50px; }
  .indicator-grid article strong { font-size: 26px; }
  .transmission-principles,
  .technology-services { padding-top: 74px; padding-bottom: 74px; }
  .principle-visual { min-height: 300px; }
  .principle-core { width: 130px; height: 130px; }
  .principle-core span { font-size: 28px; }
  .technology-service-map { grid-template-columns: 1fr 1fr; gap: 0 16px; }
  .technology-service-map > div { min-height: 120px; }
  .technology-service-map span { margin-top: 26px; font-size: 14px; }

  .service-terms,
  .technical-terms { padding: 40px 22px; border-radius: 18px; }
  .terms-copy ul { grid-template-columns: 1fr; }

  .faq-section { padding-top: 66px; padding-bottom: 66px; }
  .faq-item summary { font-size: 14px; padding: 17px 0; }

  .terminal-scenes,
  .industry-scenes { padding-top: 60px; padding-bottom: 74px; }
  .terminal-scene-grid,
  .industry-scene-grid { grid-template-columns: 1fr; gap: 22px; }
  .terminal-image,
  .industry-image { height: 240px; }

  .service-callout { margin-top: 40px; margin-bottom: 70px; padding: 32px 22px; }
  .service-callout h2 { font-size: clamp(28px, 8.4vw, 40px); }

  .partner-brand-note { display: block; }
  .partner-brand-note > span { display: block; margin-bottom: 7px; }
}

@media (max-width: 420px) {
  .hero-actions .button { flex: 1; }
  .checkout-steps { gap: 8px; font-size: 8px; }
  .detail-thumbs { grid-template-columns: repeat(4, 1fr); }
}