/* ==========================================================================
   科技城 AI 公园 — 官网样式表
   01 变量 / 02 基础 / 03 组件 / 04 页头 / 05 首屏 / 06 内容区块 /
   07 页脚 / 08 动效 / 09 响应式
   ========================================================================== */

/* ---------- 01 变量 ---------- */
:root {
  --ink-950: #05070f;
  --ink-900: #080d1a;
  --ink-800: #0e1526;
  --ink-700: #182238;
  --ink-600: #26334d;

  --brand-700: #1c3fa8;
  --brand-600: #2455d8;
  --brand-500: #2f6bff;
  --brand-400: #6a9bff;
  --brand-300: #a8c4ff;
  --violet:    #7c5cff;
  --cyan:      #22d3ee;
  --green:     #34d399;
  --amber:     #f5a524;

  --gray-800: #202a3d;
  --gray-700: #3c4761;
  --gray-600: #5b6880;
  --gray-500: #808b9f;
  --gray-400: #a9b1c1;
  --gray-300: #d2d7e0;
  --gray-200: #e7e9ef;
  --gray-100: #f1f3f7;
  --gray-050: #f7f8fb;
  --white: #fff;

  --text-strong: var(--ink-950);
  --text-body: var(--gray-700);
  --text-muted: var(--gray-600);
  --line: var(--gray-200);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
               -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", Arial, sans-serif;
  --font-num: "SF Pro Display", Inter, "Helvetica Neue", Arial, sans-serif;

  --container: 1300px;
  --gutter: 36px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 4px 16px rgba(5, 7, 15, .06);
  --shadow-md: 0 16px 44px rgba(5, 7, 15, .1);
  --shadow-lg: 0 32px 80px rgba(5, 7, 15, .18);

  --ease: cubic-bezier(.22, .61, .36, 1);
  --header-h: 74px;
}

/* ---------- 02 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--text-strong);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--brand-500); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 50%; top: -60px; transform: translateX(-50%);
  z-index: 200; background: var(--ink-950); color: #fff;
  padding: 10px 20px; border-radius: 0 0 8px 8px; transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

.container {
  width: 100%; max-width: var(--container);
  margin-inline: auto; padding-inline: var(--gutter);
}

/* ---------- 03 组件 ---------- */
.section { position: relative; padding: clamp(76px, 8.5vw, 136px) 0; }
.section--tint { background: var(--gray-050); }
.section--dark { background: var(--ink-950); color: var(--gray-400); overflow: hidden; }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }

/* 区块头：序号 / 标题 / 辅助说明 */
.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .8fr);
  column-gap: clamp(40px, 6vw, 96px);
  row-gap: 20px;
  margin-bottom: clamp(44px, 5.5vw, 76px);
}
.sec-index {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-num);
  font-size: 12.5px; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--brand-600);
}
.sec-index::after {
  content: ""; flex: 1; height: 1px; max-width: 200px;
  background: linear-gradient(90deg, currentColor, transparent);
  opacity: .5;
}
.sec-title {
  font-size: clamp(28px, 3.1vw, 43px);
  line-height: 1.26; letter-spacing: -.025em;
  /* 中文标题不要在词中断行 */
  line-break: strict; word-break: keep-all;
}
.sec-aside { align-self: end; display: grid; gap: 14px; }
.sec-aside p { font-size: 15.5px; color: var(--text-muted); line-height: 1.9; }
.sec-aside--cta { align-self: end; justify-items: end; }
.sec-head--light .sec-index { color: var(--brand-400); }
.sec-head--light .sec-aside p { color: var(--gray-500); }

.hl {
  background: linear-gradient(100deg, #7fb0ff 0%, #22d3ee 55%, #7ef5d8 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 标记：事实 / 愿景 */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; line-height: 1.6;
  padding: 3px 10px; border-radius: 999px; white-space: nowrap;
}
.badge::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor;
}
.badge--fact   { color: #0f8a5f; background: rgba(52, 211, 153, .14); }
.badge--vision { color: #9a6300; background: rgba(245, 165, 36, .16); }
.badge--soft   { color: var(--gray-600); background: var(--gray-100); }
.badge--soft::before { display: none; }
.section--dark .badge--fact { color: #5fe3b0; background: rgba(52, 211, 153, .14); }
.section--dark .badge--vision { color: #ffc768; background: rgba(245, 165, 36, .16); }

.legend {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px;
  font-size: 13px; color: var(--gray-500);
}

/* 按钮 */
.btn {
  --h: 48px;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: var(--h); padding: 0 26px;
  border: 1px solid transparent; border-radius: 999px;
  font-size: 15px; font-weight: 600; line-height: 1; white-space: nowrap;
  transition: transform .22s var(--ease), background-color .22s var(--ease),
              border-color .22s var(--ease), color .22s var(--ease), box-shadow .25s var(--ease);
}
.btn--sm { --h: 40px; padding: 0 20px; font-size: 14px; }
.btn--lg { --h: 54px; padding: 0 32px; font-size: 16px; }
.btn--block { width: 100%; }
.btn--primary {
  background: linear-gradient(115deg, var(--brand-600), var(--brand-500) 60%, #3f7dff);
  color: #fff; box-shadow: 0 10px 28px rgba(47, 107, 255, .3);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(47, 107, 255, .4); }
.btn--ghost {
  color: #fff; border-color: rgba(255, 255, 255, .32); background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .6); }
.btn--outline { color: var(--ink-800); border-color: var(--gray-300); }
.btn--outline:hover { border-color: var(--brand-500); color: var(--brand-600); }

/* 箭头链接 */
.link-arrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 14px; font-weight: 600; color: var(--brand-600);
}
.link-arrow--light { color: var(--brand-300); }
.link-arrow i { width: 16px; height: 8px; position: relative; display: inline-block; transition: transform .25s var(--ease); }
.link-arrow i::before { content: ""; position: absolute; left: 0; top: 3px; width: 100%; height: 1.5px; background: currentColor; }
.link-arrow i::after {
  content: ""; position: absolute; right: 0; top: 0; width: 7px; height: 7px;
  border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor;
  transform: rotate(45deg); transform-origin: top right;
}
.link-arrow:hover i { transform: translateX(5px); }

/* 图片比例容器 —— 替换真实素材时不需要改动这里 */
.ratio {
  position: relative; width: 100%; overflow: hidden;
  border-radius: var(--radius);
  background: var(--gray-100) center/cover no-repeat;
}
.ratio::before { content: ""; display: block; }
.ratio--16x9::before { padding-top: 56.25%; }
.ratio--4x3::before  { padding-top: 75%; }
.ratio--3x2::before  { padding-top: 66.6667%; }
.ratio--1x1::before  { padding-top: 100%; }
.ratio img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.section--dark .ratio { background: rgba(255, 255, 255, .05); }

/* 勾选列表 */
.check-list { display: grid; gap: 13px; margin: 24px 0 30px; }
.check-list li { position: relative; padding-left: 30px; font-size: 15px; color: var(--text-body); }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 17px; height: 17px; border-radius: 50%; background: rgba(47, 107, 255, .1);
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 13px;
  width: 6px; height: 3px;
  border-left: 1.6px solid var(--brand-600); border-bottom: 1.6px solid var(--brand-600);
  transform: rotate(-45deg);
}

/* 小标签组 */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: 12.5px; padding: 5px 12px; border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .06); color: rgba(255, 255, 255, .84);
}

/* ---------- 04 页头 ---------- */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 100; transition: transform .35s var(--ease); }
.site-header.is-hidden { transform: translateY(-100%); }

.utility {
  height: 38px; overflow: hidden;
  background: var(--ink-950); color: var(--gray-500); font-size: 12.5px;
  transition: height .3s var(--ease), opacity .25s var(--ease);
}
.utility__inner { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.utility__note { display: flex; align-items: center; gap: 9px; }
.pulse {
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, .5); animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(34, 211, 238, .45); }
  70%  { box-shadow: 0 0 0 7px rgba(34, 211, 238, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); }
}
.utility__links { display: flex; align-items: center; gap: 14px; }
.utility__links a:hover { color: #fff; }
.utility__hours { font-family: var(--font-num); color: var(--gray-400); }
.utility .sep { width: 1px; height: 11px; background: rgba(255, 255, 255, .16); }

.lang { position: relative; }
.lang__btn { display: inline-flex; align-items: center; gap: 6px; background: none; border: 0; padding: 0; color: inherit; font-size: 12.5px; }
.lang__btn:hover { color: #fff; }
.lang__menu {
  position: absolute; right: 0; top: calc(100% + 10px); min-width: 170px;
  background: #fff; border-radius: 10px; box-shadow: var(--shadow-md);
  padding: 8px; display: grid; gap: 2px;
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: all .2s var(--ease);
}
.lang.is-open .lang__menu { opacity: 1; visibility: visible; transform: none; }
.lang__menu a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-radius: 6px; color: var(--gray-700); font-size: 13px;
}
.lang__menu a:hover { background: var(--gray-100); }
.lang__menu a.is-active { color: var(--brand-600); font-weight: 600; }
.lang__menu a.is-disabled { color: var(--gray-400); pointer-events: none; }
.lang__menu em { font-style: normal; font-size: 11px; color: var(--gray-400); }

.navbar {
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.navbar__inner { display: flex; align-items: center; gap: 40px; height: var(--header-h); }

.site-header:not(.is-stuck) .navbar { background: transparent; border-bottom-color: rgba(255, 255, 255, .12); }
.site-header:not(.is-stuck) .nav__link { color: #fff; }
.site-header:not(.is-stuck) .nav-toggle span { background: #fff; }
.site-header.is-stuck .utility { height: 0; opacity: 0; }
.site-header.is-stuck .navbar { box-shadow: 0 2px 22px rgba(5, 7, 15, .07); }

/* 品牌标识：首屏透明态用白色版，吸顶后用深色版 */
.brand { position: relative; display: inline-flex; align-items: center; flex-shrink: 0; }
.brand__logo { display: block; height: 26px; width: auto; }
.brand__logo--dark {
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  opacity: 0; transition: opacity .3s var(--ease);
}
.brand__logo--light { transition: opacity .3s var(--ease); }
.site-header.is-stuck .brand__logo--light { opacity: 0; }
.site-header.is-stuck .brand__logo--dark { opacity: 1; }

.nav { margin-right: auto; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__link {
  position: relative; display: inline-flex; align-items: center;
  height: var(--header-h); padding: 0 17px;
  font-size: 15px; font-weight: 500; color: var(--ink-800);
}
.nav__link::after {
  content: ""; position: absolute; left: 17px; right: 17px; bottom: 20px; height: 2px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .28s var(--ease);
}
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-current { color: var(--brand-500); }
.nav__link.is-current::after { transform: scaleX(1); background: var(--brand-500); }
.site-header:not(.is-stuck) .nav__link.is-current { color: #fff; }

.navbar__actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border: 0; background: none;
  padding: 11px 8px; flex-direction: column; justify-content: space-between;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink-950); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.scroll-progress {
  height: 2px; width: 0;
  background: linear-gradient(90deg, var(--brand-500), var(--cyan));
  transition: width .1s linear;
}

.scrim {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(5, 7, 15, .45); backdrop-filter: blur(2px);
  opacity: 0; transition: opacity .3s var(--ease);
}
.scrim.is-visible { opacity: 1; }

/* ---------- 05 首屏 ---------- */
.hero {
  position: relative; isolation: isolate;
  min-height: min(100vh, 940px);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-top: calc(var(--header-h) + 120px);
  background: var(--ink-950); overflow: hidden;
}
/* 首屏轮播：背景层交叉淡入，文字层叠放在同一网格单元 */
.hero__bgs { position: absolute; inset: 0; z-index: -3; background: var(--ink-900); }
.hero__bg {
  position: absolute; inset: 0;
  background: var(--ink-900) center/cover no-repeat;
  opacity: 0; transform: scale(1.06);
  transition: opacity 1.2s var(--ease);
}
.hero__bg.is-active { opacity: 1; animation: heroZoom 9s ease-out forwards; }
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero__veil {
  position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(90deg, rgba(5, 7, 15, .9) 0%, rgba(5, 7, 15, .66) 36%, rgba(5, 7, 15, .2) 70%, rgba(5, 7, 15, .12) 100%),
    linear-gradient(180deg, rgba(5, 7, 15, .6) 0%, rgba(5, 7, 15, 0) 24%, rgba(5, 7, 15, 0) 58%, rgba(5, 7, 15, .88) 100%),
    radial-gradient(70% 60% at 12% 70%, rgba(36, 85, 216, .34) 0%, transparent 70%);
}
.hero__mesh {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(110% 90% at 30% 45%, #000 15%, transparent 75%);
  -webkit-mask-image: radial-gradient(110% 90% at 30% 45%, #000 15%, transparent 75%);
}

.hero__inner { position: relative; padding-bottom: clamp(56px, 7vw, 92px); }
.hero__kicker { margin-bottom: 26px; }
.tagline {
  display: inline-flex; align-items: center;
  font-size: 13px; font-weight: 600; letter-spacing: .1em;
  color: rgba(255, 255, 255, .86);
  padding: 7px 18px 7px 16px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(6px);
}
.tagline::before {
  content: ""; width: 16px; height: 1px; margin-right: 12px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}
.hero__title {
  color: #fff; max-width: 15ch;
  font-size: clamp(40px, 6.4vw, 88px);
  line-height: 1.1; letter-spacing: -.035em;
  margin-bottom: 30px;
}
.hero__lede {
  max-width: 56ch; font-size: clamp(15px, 1.2vw, 17.5px);
  line-height: 1.95; color: rgba(255, 255, 255, .72);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }

.hero__stage { display: grid; grid-template-columns: minmax(0, 1fr); }
/* 旧文字先淡出（.3s），新文字随后依次进入，二者不重叠 */
.hero__slide { grid-area: 1 / 1; min-width: 0; visibility: hidden; transition: visibility 0s .3s; }
.hero__slide.is-active { visibility: visible; transition: none; }
.hero__slide > * {
  opacity: 0; transform: translateY(-10px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.hero__slide.is-active > * {
  opacity: 1; transform: none; transition: none;
  animation: heroTextIn .8s var(--ease) .3s both;
}
.hero__slide.is-active > :nth-child(2) { animation-delay: .38s; }
.hero__slide.is-active > :nth-child(3) { animation-delay: .46s; }
.hero__slide.is-active > :nth-child(4) { animation-delay: .54s; }
@keyframes heroTextIn { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.hero__title { text-shadow: 0 2px 30px rgba(5, 7, 15, .35); }
.hero__lede { text-shadow: 0 1px 12px rgba(5, 7, 15, .5); }

.hero__controls {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px;
  margin-top: clamp(40px, 5vw, 64px);
}
.hero__tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 170px)); gap: 20px; }
.hero__tab {
  display: grid; grid-template-columns: auto 1fr; column-gap: 10px; row-gap: 12px;
  padding: 0; border: 0; background: none; text-align: left;
  color: rgba(255, 255, 255, .5); transition: color .25s var(--ease);
}
.hero__tab:hover, .hero__tab.is-active { color: #fff; }
.hero__tab-num { font-family: var(--font-num); font-size: 12px; font-weight: 600; letter-spacing: .1em; }
.hero__tab-label { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hero__tab-bar {
  grid-column: 1 / -1; height: 2px; overflow: hidden;
  background: rgba(255, 255, 255, .22); border-radius: 2px;
}
.hero__tab-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #fff, var(--cyan)); }
.hero__tab.is-done .hero__tab-bar i { width: 100%; background: rgba(255, 255, 255, .6); }
.hero__tab.is-active .hero__tab-bar i { width: 100%; background: linear-gradient(90deg, #fff, var(--cyan)); }
.hero.is-autoplay .hero__tab.is-active .hero__tab-bar i {
  width: 0; animation: heroProgress var(--hero-interval, 7s) linear forwards;
}
.hero.is-paused .hero__tab.is-active .hero__tab-bar i { animation-play-state: paused; }
@keyframes heroProgress { to { width: 100%; } }

.hero__arrows { display: flex; gap: 10px; flex-shrink: 0; }
.hero__arrow {
  display: grid; place-items: center; width: 44px; height: 44px;
  border: 1px solid rgba(255, 255, 255, .26); border-radius: 50%;
  background: rgba(5, 7, 15, .25); color: #fff; backdrop-filter: blur(6px);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}
.hero__arrow:hover { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .5); }

.hero__facts {
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, .12);
  background: rgba(5, 7, 15, .42);
  backdrop-filter: blur(10px);
}
.hero__facts-inner {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px; padding-top: 30px; padding-bottom: 30px;
}
.fact { display: grid; gap: 7px; padding-right: 20px; }
.fact strong {
  display: flex; align-items: baseline;
  font-family: var(--font-num); font-weight: 600;
  font-size: clamp(26px, 2.8vw, 38px); line-height: 1;
  color: #fff; letter-spacing: -.02em;
}
.fact i { font-style: normal; font-size: 14px; margin-left: 6px; color: var(--cyan); font-family: var(--font-sans); font-weight: 600; }
.fact span { font-size: 13px; color: rgba(255, 255, 255, .55); line-height: 1.6; }

/* ---------- 06 内容区块 ---------- */

/* 06.1 从算力到应用 */
.narrative__glow {
  position: absolute; top: -18%; left: 50%; transform: translateX(-50%);
  width: 1200px; height: 760px; pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(36, 85, 216, .26) 0%, transparent 70%);
}
.narrative .container { position: relative; }

.chain {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px; background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg); overflow: hidden;
}
.chain__node {
  position: relative; padding: 34px 30px 38px;
  background: var(--ink-950);
  transition: background-color .3s var(--ease);
}
.chain__node:hover { background: var(--ink-800); }
.chain__node:nth-child(n+3) {
  background: linear-gradient(170deg, rgba(47, 107, 255, .14), rgba(5, 7, 15, .2) 70%);
}
.chain__node:nth-child(n+3):hover { background: linear-gradient(170deg, rgba(47, 107, 255, .22), rgba(5, 7, 15, .2) 70%); }
.chain__idx {
  display: block; font-family: var(--font-num); font-size: 12px; font-weight: 600;
  letter-spacing: .16em; color: var(--gray-600); margin-bottom: 18px;
}
.chain__node h3 { font-size: 19px; margin-bottom: 10px; }
.chain__node p { font-size: 14px; color: var(--gray-500); line-height: 1.8; }
.chain__tag {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px; font-size: 12px; font-weight: 600;
  color: var(--cyan);
}
.chain__tag::before { content: ""; width: 14px; height: 1px; background: currentColor; }

.region-data {
  margin-top: 56px; padding: 40px 44px 34px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .025);
}
.region-data__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 20px; margin-bottom: 30px; }
.region-data__head h4 { font-size: 17px; }
.region-data__head p { font-size: 13px; color: var(--gray-600); }
.region-data__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 36px; }
.region-data__grid dt {
  font-family: var(--font-num); font-size: clamp(20px, 2vw, 27px); font-weight: 600;
  color: #fff; letter-spacing: -.01em; line-height: 1.2; margin-bottom: 8px;
}
.region-data__grid dd { font-size: 13.5px; color: var(--gray-500); line-height: 1.7; }
.source-note {
  margin-top: 30px; padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 12.5px; color: var(--gray-600); line-height: 1.8;
}

/* 06.2 四个方向 */
.dirs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.dir {
  position: relative; overflow: hidden;
  border-radius: var(--radius-lg);
  min-height: 420px;
  display: flex; align-items: flex-end;
  isolation: isolate;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.dir:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.dir__media {
  position: absolute; inset: 0; z-index: -2;
  background: var(--ink-800) center/cover no-repeat;
  transition: transform .8s var(--ease);
}
.dir:hover .dir__media { transform: scale(1.06); }
.dir::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(5, 7, 15, .12) 0%, rgba(5, 7, 15, .72) 52%, rgba(5, 7, 15, .95) 100%);
  transition: opacity .4s var(--ease);
}
.dir__body { padding: 28px 26px 30px; width: 100%; }
.dir__body h3 { color: #fff; font-size: 23px; margin: 14px 0 6px; letter-spacing: .01em; }
.dir__short { font-size: 14px; color: rgba(255, 255, 255, .62); }
.dir__more {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows .45s var(--ease), opacity .35s var(--ease), margin-top .45s var(--ease);
  opacity: 0; margin-top: 0;
}
.dir__more > p {
  overflow: hidden;
  font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .78);
}
.dir:hover .dir__more,
.dir:focus-within .dir__more,
.dir.is-active .dir__more { grid-template-rows: 1fr; opacity: 1; margin-top: 14px; }

.quote {
  margin: clamp(56px, 6vw, 88px) 0 0;
  padding: clamp(36px, 4vw, 56px) clamp(28px, 4vw, 64px);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--gray-050), #eef2fb);
  border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.quote::before {
  content: "“"; position: absolute; top: -30px; left: 22px;
  font-size: 160px; line-height: 1; color: var(--brand-500); opacity: .1;
  font-family: Georgia, serif;
}
.quote blockquote {
  margin: 0; position: relative;
  font-size: clamp(17px, 1.7vw, 23px); line-height: 1.85;
  color: var(--ink-800); font-weight: 500; letter-spacing: -.005em;
}
.quote figcaption { display: flex; align-items: baseline; gap: 12px; margin-top: 26px; }
.quote figcaption strong { font-size: 15px; color: var(--ink-900); }
.quote figcaption span { font-size: 13.5px; color: var(--gray-600); }

/* 06.3 走进公园 */
.zones { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 28px; }
.zones__nav { display: grid; align-content: start; gap: 10px; }
.zone-btn {
  display: grid; gap: 3px; text-align: left;
  padding: 20px 22px; border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius); background: rgba(255, 255, 255, .03);
  transition: all .28s var(--ease);
}
.zone-btn:hover { background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .2); }
.zone-btn.is-active {
  background: linear-gradient(100deg, rgba(47, 107, 255, .22), rgba(34, 211, 238, .08));
  border-color: rgba(106, 155, 255, .5);
}
.zone-btn__num { font-family: var(--font-num); font-size: 11.5px; letter-spacing: .16em; color: var(--gray-600); }
.zone-btn.is-active .zone-btn__num { color: var(--cyan); }
.zone-btn__name { font-size: 18px; font-weight: 700; color: #fff; letter-spacing: .04em; }
.zone-btn__sub { font-size: 12.5px; color: var(--gray-500); }

.zones__stage { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 460px; }
.zone { display: none; position: relative; min-height: 460px; height: 100%; }
.zone.is-active { display: block; animation: fadeUp .55s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.zone__media { position: absolute; inset: 0; background: var(--ink-800) center/cover no-repeat; }
.zone__caption {
  position: absolute; inset: auto 0 0 0;
  padding: clamp(28px, 4vw, 46px);
  background: linear-gradient(180deg, transparent, rgba(5, 7, 15, .82) 42%, rgba(5, 7, 15, .96));
}
.zone__caption h3 { font-size: clamp(22px, 2.4vw, 32px); letter-spacing: .04em; margin-bottom: 12px; }
.zone__caption p { max-width: 60ch; font-size: 14.5px; line-height: 1.9; color: rgba(255, 255, 255, .76); margin-bottom: 20px; }

/* 园区影像拼贴 */
.gallery-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  margin: clamp(56px, 6vw, 88px) 0 22px;
  padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, .1);
}
.gallery-head h3 { font-size: 20px; letter-spacing: .04em; }
.gallery-head p { font-size: 13px; color: var(--gray-500); }

.gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: clamp(170px, 17vw, 240px);
  grid-template-areas:
    "a a b c"
    "a a d c"
    "e f f g"
    "e h i g";
  gap: 14px;
}
.g-a { grid-area: a; } .g-b { grid-area: b; } .g-c { grid-area: c; }
.g-d { grid-area: d; } .g-e { grid-area: e; } .g-f { grid-area: f; }
.g-g { grid-area: g; } .g-h { grid-area: h; } .g-i { grid-area: i; }

.gallery__item {
  position: relative; overflow: hidden; padding: 0; border: 0;
  border-radius: var(--radius); background: rgba(255, 255, 255, .05);
  cursor: zoom-in; isolation: isolate;
}
.gallery__img, .gallery__img img { position: absolute; inset: 0; width: 100%; height: 100%; }
.gallery__img img { object-fit: cover; transition: transform .8s var(--ease), filter .5s var(--ease); }
.gallery__item::after {
  content: attr(data-caption);
  position: absolute; inset: auto 0 0 0; z-index: 1;
  padding: 36px 18px 14px; text-align: left;
  font-size: 13px; font-weight: 600; letter-spacing: .04em; color: #fff;
  background: linear-gradient(180deg, transparent, rgba(5, 7, 15, .78));
  opacity: 0; transform: translateY(6px);
  transition: opacity .35s var(--ease), transform .35s var(--ease);
}
.gallery__item:hover img, .gallery__item:focus-visible img { transform: scale(1.05); }
.gallery__item:hover::after, .gallery__item:focus-visible::after { opacity: 1; transform: none; }

.park__note {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 32px;
  margin-top: 26px;
}
.park__note p { font-size: 14px; color: var(--gray-500); line-height: 1.85; }

/* 大图浏览 */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  display: grid; grid-template-columns: 72px minmax(0, 1fr) 72px; align-items: center;
  background: rgba(5, 7, 15, .94); backdrop-filter: blur(6px);
  opacity: 0; transition: opacity .3s var(--ease);
}
.lightbox.is-open { opacity: 1; }
.lightbox[hidden] { display: none; }
.lightbox__figure { margin: 0; display: grid; justify-items: center; gap: 16px; }
.lightbox__img {
  max-width: 100%; max-height: calc(100vh - 150px);
  border-radius: 10px; box-shadow: var(--shadow-lg);
}
.lightbox__cap { display: flex; gap: 18px; font-size: 14px; color: rgba(255, 255, 255, .8); }
.lightbox__count { font-family: var(--font-num); color: var(--gray-500); }
.lightbox__nav, .lightbox__close {
  display: grid; place-items: center; width: 48px; height: 48px; justify-self: center;
  border: 1px solid rgba(255, 255, 255, .18); border-radius: 50%;
  background: rgba(255, 255, 255, .06); color: #fff;
  transition: background-color .2s var(--ease);
}
.lightbox__nav:hover, .lightbox__close:hover { background: rgba(255, 255, 255, .16); }
.lightbox__close { position: absolute; top: 20px; right: 20px; }

/* 06.4 未来教育 */
.edu { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr); gap: clamp(32px, 4.5vw, 64px); align-items: center; }
.edu__main .ratio { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.edu__model-label {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .06em;
  color: var(--brand-600); background: rgba(47, 107, 255, .08);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 28px;
}
.steps { display: grid; gap: 26px; }
.steps li { display: flex; gap: 20px; }
.steps__num {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-num); font-size: 13px; font-weight: 600;
  color: var(--brand-600); background: rgba(47, 107, 255, .09);
  border: 1px solid rgba(47, 107, 255, .18);
}
.steps h4 { font-size: 17px; margin-bottom: 6px; }
.steps p { font-size: 14.5px; color: var(--text-muted); line-height: 1.85; }

.edu__grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px;
  margin-top: clamp(48px, 5vw, 72px);
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
}
.edu-card { background: #fff; padding: 32px 28px 34px; transition: background-color .3s var(--ease); }
.edu-card:hover { background: var(--gray-050); }
.edu-card h4 { font-size: 16px; margin-bottom: 12px; }
.edu-card h4::before {
  content: ""; display: block; width: 22px; height: 2px; margin-bottom: 14px;
  background: linear-gradient(90deg, var(--brand-500), var(--cyan));
}
.edu-card p { font-size: 14px; color: var(--text-muted); line-height: 1.85; }

/* 06.5 企业与产业 */
.path { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.path__line {
  position: absolute; left: 0; right: 0; top: 7px; height: 1px;
  background: linear-gradient(90deg, var(--brand-500), rgba(124, 92, 255, .6) 55%, rgba(47, 107, 255, .12));
}
.path__step { position: relative; padding-top: 34px; }
.path__dot {
  position: absolute; top: 0; left: 0;
  width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 3px solid var(--brand-500);
  box-shadow: 0 0 0 5px rgba(47, 107, 255, .1);
  transition: transform .3s var(--ease);
}
.path__step:hover .path__dot { transform: scale(1.25); }
.path__stage {
  font-family: var(--font-num); font-size: 12px; font-weight: 600;
  letter-spacing: .14em; color: var(--brand-600); margin-bottom: 10px;
}
.path__step h3 { font-size: 19px; margin-bottom: 10px; }
.path__step p { font-size: 14.5px; color: var(--text-muted); line-height: 1.85; }

.ent-cta {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
  margin-top: clamp(56px, 6vw, 88px);
  padding-top: clamp(48px, 5vw, 72px);
  border-top: 1px solid var(--line);
}
.ent-cta__media .ratio { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.ent-cta__body h3 { font-size: clamp(21px, 2.2vw, 28px); }

/* 06.6 区域与生态 */
.region { isolation: isolate; }
.region__bg { position: absolute; inset: 0; z-index: -2; background: var(--ink-900) center/cover no-repeat; }
.region__veil {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(5, 7, 15, .92) 0%, rgba(5, 7, 15, .74) 55%, rgba(5, 7, 15, .9) 100%),
    radial-gradient(70% 60% at 82% 24%, rgba(36, 85, 216, .4), transparent 68%);
}
.region__inner { position: relative; }
.eco { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.eco__card {
  padding: 32px 28px 36px;
  border: 1px solid rgba(255, 255, 255, .11);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .04);
  backdrop-filter: blur(4px);
  transition: border-color .3s var(--ease), background-color .3s var(--ease), transform .3s var(--ease);
}
.eco__card:hover { border-color: rgba(106, 155, 255, .45); background: rgba(47, 107, 255, .1); transform: translateY(-4px); }
.eco__card h4 { font-size: 17px; margin-bottom: 12px; }
.eco__card p { font-size: 14px; color: var(--gray-500); line-height: 1.85; }

/* 06.7 新闻 */
.news-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 4vw, 56px); }
.meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--gray-500); font-family: var(--font-num); }
.news-lead__media { border-radius: var(--radius-lg); overflow: hidden; }
.news-lead__media .ratio { transition: transform .7s var(--ease); }
.news-lead:hover .news-lead__media .ratio { transform: scale(1.04); }
.news-lead__body { padding-top: 24px; }
.news-lead__body h3 { font-size: clamp(20px, 2vw, 26px); line-height: 1.45; margin: 14px 0 12px; transition: color .2s var(--ease); }
.news-lead:hover h3 { color: var(--brand-600); }
.news-lead__body > p { font-size: 14.5px; color: var(--text-muted); line-height: 1.85; margin-bottom: 18px; }

.news-side { display: grid; align-content: start; }
.news-item {
  display: grid; grid-template-columns: 148px minmax(0, 1fr); gap: 20px;
  padding: 22px 0; border-bottom: 1px solid var(--line);
  transition: padding-left .3s var(--ease);
}
.news-side .news-item:first-child { padding-top: 0; }
.news-item:hover { padding-left: 8px; }
.news-item--text { grid-template-columns: 1fr; }
.news-item__media .ratio { border-radius: 10px; }
.news-item h4 { font-size: 16.5px; line-height: 1.55; margin: 9px 0 7px; transition: color .2s var(--ease); }
.news-item:hover h4 { color: var(--brand-600); }
.news-item p { font-size: 13.5px; color: var(--text-muted); line-height: 1.75; }

/* 06.8 参观与合作 */
.visit__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: clamp(36px, 5vw, 72px); }
.info-block + .info-block { margin-top: 36px; padding-top: 36px; border-top: 1px solid var(--line); }
.info-block h4 { font-size: 17px; margin-bottom: 20px; }
.info-list { display: grid; gap: 16px; }
.info-list li { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 20px; align-items: baseline; }
.info-list span { font-size: 13.5px; color: var(--gray-500); }
.info-list strong { font-size: 15px; color: var(--ink-800); font-weight: 600; line-height: 1.7; }

.visit__form {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 34px 32px 30px;
  box-shadow: var(--shadow-sm);
}
.visit__form-title { font-size: 18px; font-weight: 700; color: var(--ink-900); margin-bottom: 24px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 500; color: var(--gray-700); margin-bottom: 7px; }
.field label i { font-style: normal; color: #e2573c; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--gray-300); border-radius: 10px;
  font-family: inherit; font-size: 14.5px; line-height: 1.5;
  color: var(--ink-900); background: #fff; appearance: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input, .field select { height: 46px; padding-block: 0; }
.field textarea { resize: vertical; min-height: 84px; }
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235b6880' stroke-width='1.4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
}
.field input::placeholder, .field textarea::placeholder { color: var(--gray-400); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(47, 107, 255, .12);
}
.field.is-error input, .field.is-error select { border-color: #e2573c; }
.visit__form .btn { margin-top: 8px; }
.form-status { font-size: 13px; margin-top: 10px; min-height: 20px; }
.form-status.is-ok { color: #0f8a5f; }
.form-status.is-bad { color: #e2573c; }
.visit__form-note { font-size: 12px; color: var(--gray-500); line-height: 1.7; margin-top: 12px; }

/* 06.9 结尾陈述 */
.closing {
  background: var(--ink-950); color: #fff;
  padding: clamp(72px, 9vw, 130px) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.closing__text {
  margin: 0 auto;
  font-size: clamp(22px, 3.1vw, 42px); font-weight: 700;
  line-height: 1.62; letter-spacing: -.02em; color: #fff;
  line-break: strict; word-break: keep-all;
}
.closing__sign {
  margin-top: 36px; font-family: var(--font-num);
  font-size: 12px; letter-spacing: .24em; color: var(--gray-600);
}

/* ---------- 07 页脚 ---------- */
.footer { background: var(--ink-950); color: var(--gray-500); padding: clamp(56px, 6vw, 86px) 0 0; font-size: 14px; border-top: 1px solid rgba(255, 255, 255, .07); }
.footer__top {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 2.3fr) minmax(0, .8fr);
  gap: 56px; padding-bottom: 54px;
}
.brand--footer .brand__logo { height: 30px; }
.footer__en {
  margin-top: 12px; font-family: var(--font-num);
  font-size: 11px; letter-spacing: .28em; color: var(--gray-600);
}
.footer__slogan { margin: 22px 0 20px; color: var(--gray-400); font-size: 15px; }
.footer__addr { display: grid; gap: 10px; font-size: 13px; color: var(--gray-600); line-height: 1.8; }
.footer__nav { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 30px; }
.footer__col { display: grid; align-content: start; gap: 12px; }
.footer__col h5 { font-size: 14px; color: #fff; margin-bottom: 6px; }
.footer__col a { font-size: 13.5px; color: var(--gray-500); }
.footer__col a:hover { color: #fff; }
.footer__side h5 { font-size: 14px; color: #fff; margin-bottom: 18px; }
.qr { display: grid; gap: 10px; justify-items: start; }
.qr__img {
  width: 108px; height: 108px; border-radius: 10px;
  background: rgba(255, 255, 255, .06) center/cover no-repeat;
  border: 1px dashed rgba(255, 255, 255, .2);
  display: grid; place-items: center;
}
.qr__img span { font-size: 11px; color: var(--gray-600); text-align: center; line-height: 1.5; }
.qr__img.has-img span { display: none; }
.qr__img.has-img { border-style: solid; border-color: transparent; }
.qr p { font-size: 12.5px; color: var(--gray-600); }

.footer__bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px;
  padding: 22px 0 28px; border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 12.5px; color: var(--gray-600);
}
.footer__legal { display: flex; flex-wrap: wrap; gap: 24px; }
.footer__legal a:hover { color: var(--gray-300); }

.to-top {
  position: fixed; right: 28px; bottom: 28px; z-index: 80;
  width: 46px; height: 46px; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 50%;
  background: #fff; color: var(--ink-800); box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .3s var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--ink-950); color: #fff; border-color: var(--ink-950); }

/* ---------- 08 动效 ---------- */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 09 响应式 ---------- */
@media (max-width: 1240px) {
  :root { --gutter: 28px; }
  .dirs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dir { min-height: 340px; }
  .dir__more { grid-template-rows: 1fr; opacity: 1; margin-top: 14px; }
  .chain, .region-data__grid, .eco, .edu__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .path { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .path__line { display: none; }
  .zones { grid-template-columns: 260px minmax(0, 1fr); }
  .footer__top { grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr); }
  .footer__side { grid-column: 1 / -1; }
}

@media (max-width: 1024px) {
  .nav-toggle { display: flex; }

  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(340px, 84vw); z-index: 95;
    background: #fff; padding: calc(var(--header-h) + 28px) 26px 40px;
    overflow-y: auto; transform: translateX(100%);
    transition: transform .34s var(--ease);
    box-shadow: -20px 0 60px rgba(5, 7, 15, .18);
  }
  .nav.is-open { transform: none; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__item { border-bottom: 1px solid var(--line); }
  .nav__link { width: 100%; height: auto; padding: 16px 2px; color: var(--ink-900) !important; font-size: 16px; }
  .nav__link::after { display: none; }
  .site-header:not(.is-stuck) .navbar { background: rgba(5, 7, 15, .3); }

  .sec-head { grid-template-columns: 1fr; }
  .sec-aside { align-self: start; }
  .sec-aside--cta { justify-items: start; }

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

  .zones { grid-template-columns: 1fr; }
  .zones__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .zone-btn { padding: 14px 16px; }
  .zone-btn__name { font-size: 16px; }
  .zones__stage, .zone { min-height: 400px; }

  .edu, .ent-cta, .news-grid, .visit__grid { grid-template-columns: 1fr; }
  .edu__main { order: -1; }
  .footer__top { grid-template-columns: 1fr; gap: 40px; }
  .footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  :root { --gutter: 20px; --header-h: 64px; }
  .utility__note { display: none; }
  .utility__inner { justify-content: flex-end; }
  .navbar__actions .btn { display: none; }

  .hero { min-height: auto; padding-top: calc(var(--header-h) + 90px); }
  .hero__title { font-size: clamp(32px, 9vw, 46px); max-width: none; }
  .hero__veil {
    background:
      linear-gradient(180deg, rgba(5, 7, 15, .72) 0%, rgba(5, 7, 15, .55) 40%, rgba(5, 7, 15, .92) 100%),
      radial-gradient(90% 60% at 20% 70%, rgba(36, 85, 216, .3) 0%, transparent 70%);
  }
  .hero__controls { gap: 16px; align-items: center; }
  .hero__tabs { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; flex: 1; min-width: 0; }
  .tagline { max-width: 100%; font-size: 12px; letter-spacing: .06em; line-height: 1.5; }
  .hero__tab { row-gap: 8px; }
  .hero__tab-label { display: none; }
  .hero__arrow { width: 38px; height: 38px; }
  .brand__logo { height: 21px; }
  .hero__actions .btn { flex: 1 1 auto; }
  .hero__facts-inner { padding-block: 24px; }
  .fact strong { font-size: 25px; }

  .chain, .region-data__grid, .eco, .edu__grid, .dirs, .path { grid-template-columns: 1fr; }
  .dir { min-height: 300px; }
  .region-data { padding: 28px 22px 26px; }
  .zones__nav { grid-template-columns: 1fr; }
  .zones__stage, .zone { min-height: 340px; }
  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: 150px;
    grid-template-areas:
      "a a" "a a"
      "b c" "d c"
      "e g" "e g"
      "f f"
      "h i";
    gap: 10px;
  }
  .gallery__item::after { opacity: 1; transform: none; padding: 28px 12px 10px; font-size: 12px; }
  .lightbox { grid-template-columns: 1fr; padding: 0 12px; }
  .lightbox__nav { position: absolute; bottom: 24px; }
  .lightbox__nav--prev { left: calc(50% - 60px); }
  .lightbox__nav--next { right: calc(50% - 60px); }
  .lightbox__img { max-height: calc(100vh - 200px); }

  .news-item { grid-template-columns: 110px minmax(0, 1fr); gap: 14px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .info-list li { grid-template-columns: 1fr; gap: 2px; }
  .visit__form { padding: 26px 20px; }

  .footer__nav { grid-template-columns: 1fr; gap: 26px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .to-top { right: 14px; bottom: 14px; }
}