/* ==========================================================================
   壹站推 · 设计系统
   风格取向：白底卡片企业站 / 淡青主色 + 深青渐变 + 圆角轻阴影
   对标 asl.com.cn 的企业站视觉语言
   ========================================================================== */

:root {
  /* 色彩 */
  --paper: #ffffff;
  --paper-2: #f4f9f9;
  --paper-3: #e2faf8;
  --ink: #333333;
  --ink-2: #666666;
  --muted: #999999;
  --line: #eeeeee;
  --line-2: #f0f3f3;
  --signal: #37bbca;
  --signal-ink: #045c66;
  --signal-soft: #e2faf8;
  --signal-grad: linear-gradient(135deg, #37bbca 0%, #045c66 100%);
  --night: linear-gradient(180deg, #045c66 0%, #053050 100%);
  --night-flat: #045c66;
  --night-2: #15595c;
  --night-line: rgba(255, 255, 255, 0.15);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 36px rgba(55, 187, 202, 0.18);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Source Han Sans SC",
    "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", STSong, SimSun, serif;
  --font-latin: Georgia, "Times New Roman", "Songti SC", serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* 尺度 */
  --shell: 1200px;
  --gut: clamp(20px, 4vw, 48px);
  --sec-y: clamp(64px, 8vw, 110px);
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 24px;
  --radius-pill: 66px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--signal);
  color: #fff;
}

.page {
  position: relative;
}

/* ------------------------------------------------------------- 版心与网格 */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.sec {
  padding: var(--sec-y) 0;
}

.sec--tight {
  padding: clamp(48px, 6vw, 80px) 0;
}

.rule {
  height: 1px;
  background: var(--line);
}

/* --------------------------------------------------------------- 文字体系 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--signal);
  border-radius: 2px;
}

.h-hero {
  font-size: clamp(34px, 5.5vw, 64px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink);
}

.h-sec {
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink);
}

.h-card {
  font-size: clamp(18px, 1.8vw, 21px);
  line-height: 1.5;
  letter-spacing: 0;
  font-weight: 600;
  color: var(--ink);
}

.lede {
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.9;
  color: var(--ink-2);
}

.body-sm {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.muted {
  color: var(--muted);
}

.serif {
  font-family: var(--font-serif);
  font-weight: 400;
}

.num {
  font-family: var(--font-latin);
  font-variant-numeric: tabular-nums;
}

.signal {
  color: var(--signal);
}

/* ------------------------------------------------------- 数字编号（01/02） */
.idx {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal);
}

/* ----------------------------------------------------------------- 导航栏 */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

.nav__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand__mark {
  width: 12px;
  height: 12px;
  background: var(--signal-grad);
  display: inline-block;
  border-radius: 3px;
}

.brand__logo {
  height: clamp(48px, 6.5vw, 60px);
  width: auto;
  display: block;
  border-radius: 4px;
}

.foot .brand__logo {
  height: 52px;
  margin-bottom: 4px;
}

.brand__en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  font-weight: 400;
}

.menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.menu a {
  position: relative;
  font-size: 15px;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 0.25s var(--ease);
}

.menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--signal);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s var(--ease);
}

.menu a:hover {
  color: var(--signal);
}

.menu a:hover::after,
.menu a[aria-current="page"]::after {
  transform: scaleX(1);
}

.menu a[aria-current="page"] {
  color: var(--signal-ink);
  font-weight: 600;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--signal-grad);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.nav__cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  position: relative;
}

.burger span {
  position: absolute;
  left: 9px;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.2s;
}

.burger span:nth-child(1) {
  top: 15px;
}

.burger span:nth-child(2) {
  top: 23px;
}

.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.burger[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* ------------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border: 0;
  border-radius: var(--radius-pill);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    background 0.3s var(--ease), color 0.3s var(--ease);
}

.btn svg {
  transition: transform 0.35s var(--ease);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--solid {
  background: var(--signal-grad);
  color: #fff;
}

.btn--solid:hover {
  opacity: 0.92;
  transform: translateY(-2px);
}

.btn--ghost {
  background: var(--paper-3);
  color: var(--signal-ink);
}

.btn--ghost:hover {
  background: var(--signal);
  color: #fff;
  transform: translateY(-2px);
}

.btn--light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid var(--night-line);
}

.btn--light:hover {
  background: #fff;
  color: var(--signal-ink);
  border-color: #fff;
}

/* --------------------------------------------------------------- 首页 Hero */
.hero {
  padding: clamp(56px, 8vw, 100px) 0 var(--sec-y);
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: end;
}

.hero__title em {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 700;
  color: var(--signal);
}

.hero__sub {
  margin-top: 26px;
  max-width: 48ch;
}

.hero__acts {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__side {
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(24px, 3vw, 36px);
  border-top: 3px solid var(--signal);
}

.hero__side dl {
  margin: 0;
}

.hero__side dt {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-top: 22px;
  font-weight: 500;
}

.hero__side dt:first-child {
  margin-top: 0;
}

.hero__side dd {
  margin: 6px 0 0;
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
}

/* ------------------------------------------------------------- 滚动跑马灯 */
.marquee {
  background: var(--paper-3);
  padding: 18px 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee__track {
  display: inline-flex;
  gap: 46px;
  padding-left: 46px;
  animation: slide 34s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__item {
  font-size: 15px;
  color: var(--signal-ink);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 46px;
}

.marquee__item::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--signal);
  border-radius: 50%;
}

@keyframes slide {
  to {
    transform: translateX(-50%);
  }
}

/* --------------------------------------------------------------- 区块标题 */
.head {
  display: grid;
  grid-template-columns: minmax(0, 0.36fr) minmax(0, 0.64fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
  margin-bottom: clamp(36px, 5vw, 60px);
}

.head__title {
  max-width: 20ch;
}

.head__note {
  max-width: 62ch;
  padding-top: 8px;
}

/* --------------------------------------------------------------- 卡片网格 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.cell {
  padding: clamp(24px, 3vw, 36px);
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  border-top: 3px solid transparent;
}

.cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--signal-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}

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

.cell:hover::before {
  transform: scaleX(1);
}

.cell__idx {
  display: inline-block;
  font-family: var(--font-latin);
  font-style: italic;
  font-size: 14px;
  color: var(--signal);
  font-weight: 700;
}

.cell__title {
  margin: 14px 0 12px;
}

.cell__txt {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.cell__tags {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  color: var(--signal-ink);
  background: var(--paper-3);
  font-weight: 500;
}

/* --------------------------------------------------------------- Logo 墙 */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}

.logo-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 26px 16px;
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.logo-cell:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.logo-cell__icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 24px;
  flex-shrink: 0;
}

.logo-cell__name {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.logo-cell__desc {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* --------------------------------------------------------------- 优势要点列表 */
.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.check-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 22px 20px;
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.check-list__dot {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--signal-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.check-list__dot::before {
  content: "";
  width: 13px;
  height: 7px;
  border-left: 2px solid var(--signal);
  border-bottom: 2px solid var(--signal);
  transform: rotate(-45deg);
  margin-top: -3px;
}

.check-list .h-card {
  margin-bottom: 4px;
}

/* --------------------------------------------------------------- CTA 卡片 */
.cta-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 32px;
}

/* --------------------------------------------------------------- 深色区块 */
.night {
  background: var(--night);
  color: #fff;
}

.night .h-sec,
.night .h-card {
  color: #fff;
}

.night .lede,
.night .body-sm {
  color: rgba(255, 255, 255, 0.78);
}

.night .eyebrow {
  color: var(--signal);
}

.night .eyebrow::before {
  background: var(--signal);
}

.night .rule {
  background: var(--night-line);
}

/* ============================================================ 科技感增强 ===
   网格底纹 / 发光节点 / 数据流光晕 / 脉冲动画
   ========================================================================== */

/* Hero 区：网格底纹 + 双向光晕 */
.hero {
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 72% 28%, #000 0%, transparent 78%);
  mask-image: radial-gradient(ellipse 75% 60% at 72% 28%, #000 0%, transparent 78%);
  opacity: 0.45;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(720px 380px at 92% 10%, rgba(55, 187, 202, 0.18), transparent 70%),
    radial-gradient(620px 320px at 4% 90%, rgba(4, 92, 102, 0.12), transparent 70%);
  pointer-events: none;
}
.hero > .shell {
  position: relative;
  z-index: 1;
}

/* Hero 标题强调字发光 */
.h-hero em {
  text-shadow: 0 0 28px rgba(55, 187, 202, 0.3);
}

/* 深色 night 区：网点底纹 */
.night {
  position: relative;
}
.night::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
.night > .shell {
  position: relative;
  z-index: 1;
}

/* 数据指标数字发光 + 顶部扫描线 */
.stat {
  position: relative;
  overflow: hidden;
}
.stat::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal), transparent);
  opacity: 0.7;
}
.stat__k {
  filter: drop-shadow(0 2px 10px rgba(55, 187, 202, 0.28));
}

/* 品牌方块脉冲 */
.brand__mark {
  animation: brandPulse 2.6s var(--ease) infinite;
}
@keyframes brandPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(55, 187, 202, 0.5);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(55, 187, 202, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(55, 187, 202, 0);
  }
}

/* eyebrow 前缀线发光 */
.eyebrow::before {
  box-shadow: 0 0 8px rgba(55, 187, 202, 0.55);
}

/* ----------------------------------------------------------- 对比流程条 */
.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.flow__step {
  padding: 28px 24px 32px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  border: 1px solid var(--night-line);
  transition: background 0.4s var(--ease), transform 0.4s var(--ease);
}

.flow__step:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
}

.flow__n {
  font-size: 22px;
  color: var(--signal);
  line-height: 1;
  font-weight: 700;
}

.flow__t {
  margin: 18px 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}

.flow__d {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

/* ----------------------------------------------------------- 左右图文分栏 */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.split--top {
  align-items: start;
}

.figure {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}

.figure svg.fig-svg {
  width: 100%;
  height: 100%;
  display: block;
  transition: transform 0.9s var(--ease);
}

.figure:hover img,
.figure:hover svg.fig-svg {
  transform: scale(1.04);
}

.figure--tall img,
.figure--tall svg.fig-svg {
  aspect-ratio: 4 / 5;
}

.figure--wide img,
.figure--wide svg.fig-svg {
  aspect-ratio: 16 / 10;
}

.figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 14px 18px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(to top, rgba(4, 92, 102, 0.85), transparent);
}

/* ------------------------------------------------------------- 列表式条目 */
.list {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--paper);
}

.list__row {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(16px, 3vw, 40px);
  padding: 28px clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: background 0.4s var(--ease);
}

.list__row:last-child {
  border-bottom: 0;
}

.list__row:hover {
  background: var(--paper-2);
}

.list__n {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: 15px;
  color: var(--signal);
  padding-top: 4px;
  font-weight: 700;
}

.list__t {
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
}

/* --------------------------------------------------------------- 指标横条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.stat {
  padding: 30px clamp(20px, 2.4vw, 28px) 32px;
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.4s var(--ease);
}

.stat:hover {
  transform: translateY(-4px);
}

.stat__k {
  font-family: var(--font-latin);
  font-size: clamp(34px, 3.4vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 700;
  background: var(--signal-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__k small {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  margin-left: 4px;
}

.stat__l {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.7;
}

/* ------------------------------------------------------------------- 引用 */
.quote {
  font-family: var(--font-serif);
  font-size: clamp(21px, 2.4vw, 30px);
  line-height: 1.6;
  letter-spacing: -0.01em;
  max-width: 30ch;
}

/* --------------------------------------------------------------- 联系信息 */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
}

.info__row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.info__k {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding-top: 6px;
  font-weight: 500;
}

.info__v {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
}

.info__v a:hover {
  color: var(--signal);
}

.tel {
  font-family: var(--font-latin);
  font-size: clamp(26px, 3.2vw, 38px);
  letter-spacing: -0.01em;
  line-height: 1.2;
  font-weight: 700;
  color: var(--signal-ink);
}

.copy-btn {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.copy-btn:hover {
  color: var(--signal);
  border-color: var(--signal);
}

.map-box {
  border-radius: var(--radius);
  background: var(--paper-3);
  padding: clamp(24px, 3vw, 36px);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 26px;
  box-shadow: var(--shadow);
}

.map-box__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 26px;
  gap: 6px;
}

.map-box__grid i {
  background: rgba(55, 187, 202, 0.15);
  border-radius: 4px;
  display: block;
}

.map-box__grid i.on {
  background: var(--signal);
}

/* -------------------------------------------------------- 时间轴（历程） */
.tl {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--paper);
}

.tl__row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: clamp(16px, 3vw, 40px);
  padding: 26px clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}

.tl__row:last-child {
  border-bottom: 0;
}

.tl__d {
  font-family: var(--font-latin);
  font-style: italic;
  font-size: 17px;
  color: var(--signal);
  font-weight: 700;
}

/* ---------------------------------------------------------------- 页头条 */
.phead {
  padding: clamp(52px, 7vw, 88px) 0 clamp(32px, 4vw, 48px);
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--line);
}

.crumb {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 22px;
}

.crumb span {
  color: var(--signal);
}

.phead__t {
  max-width: 24ch;
}

.phead__d {
  margin-top: 22px;
  max-width: 58ch;
}

/* ------------------------------------------------------------------ 页脚 */
.foot {
  background: var(--night);
  color: rgba(255, 255, 255, 0.72);
  padding: clamp(52px, 6vw, 76px) 0 34px;
}

.foot__top {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: 40px;
  border-bottom: 1px solid var(--night-line);
}

.foot .brand {
  color: #fff;
}

.foot__t {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 18px;
  font-weight: 500;
}

.foot__links a {
  display: block;
  padding: 5px 0;
  font-size: 14.5px;
  transition: color 0.25s var(--ease);
}

.foot__links a:hover {
  color: var(--signal);
}

.foot__bot {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  justify-content: space-between;
  padding-top: 26px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.5);
}

.foot__bot a:hover {
  color: var(--signal);
}

/* ------------------------------------------------------------- 滚动进入 */
.rv {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.rv.in {
  opacity: 1;
  transform: none;
}

/* 首屏载入错峰显现 */
.load > * {
  animation: rise 0.95s var(--ease) both;
}

.load > *:nth-child(1) {
  animation-delay: 0.05s;
}

.load > *:nth-child(2) {
  animation-delay: 0.14s;
}

.load > *:nth-child(3) {
  animation-delay: 0.23s;
}

.load > *:nth-child(4) {
  animation-delay: 0.32s;
}

.load > *:nth-child(5) {
  animation-delay: 0.41s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(26px);
  }
}

/* --------------------------------------------------------------- 响应式 */
@media (max-width: 1000px) {
  .hero__grid,
  .head,
  .split,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__side {
    border-top: 3px solid var(--signal);
  }

  .head__note {
    padding-top: 0;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .foot__top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .menu {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
    padding: 8px var(--gut) 22px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .menu.open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .menu a {
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }

  .menu a::after {
    display: none;
  }

  .nav__cta {
    display: none;
  }

  .burger {
    display: block;
  }

  .grid-3,
  .grid-2,
  .stats,
  .flow {
    grid-template-columns: minmax(0, 1fr);
  }

  .list__row {
    grid-template-columns: 46px minmax(0, 1fr);
  }

  .list__row .list__d {
    grid-column: 2;
  }

  .foot__top {
    grid-template-columns: minmax(0, 1fr);
  }

  .info__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .tl__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .rv {
    opacity: 1;
    transform: none;
  }
}