/* ============================================================
   中大工业地产 · 官网
   设计语言：白 / 浅灰 / 纯黑三色交替，超大中文标题，克制蓝 CTA
   ============================================================ */

:root {
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --ink-4: #a1a1a6;
  --line: #d2d2d7;
  --line-soft: rgba(0, 0, 0, 0.08);
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --blue: #0071e3;
  --blue-dark: #0062c4;
  --gold: #a98b5d;
  --gold-2: #c8ac7e;

  --font: "SF Pro SC", "SF Pro Text", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Source Han Sans SC",
    "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --gutter: clamp(20px, 7.4vw, 120px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 64px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
::selection { background: rgba(169, 139, 93, 0.22); }

/* ---------- 布局 ---------- */
.wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(72px, 9vw, 128px); }
.section--soft { background: var(--bg-soft); }
.section--dark { background: #000; color: #fff; }
.section--tight { padding-block: clamp(56px, 6vw, 88px); }

.eyebrow {
  font-size: 13.5px;
  letter-spacing: 0.01em;
  color: var(--gold);
  font-weight: 500;
  margin: 0;
}
.section--dark .eyebrow { color: var(--gold-2); }

.h1 {
  font-size: clamp(46px, 6.6vw, 88px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0;
}
.h2 {
  font-size: clamp(30px, 3.5vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0;
}
.h3 {
  font-size: clamp(24px, 2.1vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.015em;
  font-weight: 700;
  margin: 0;
}
.lead {
  font-size: clamp(16px, 1.32vw, 20px);
  line-height: 1.75;
  color: var(--ink-2);
  margin: 0;
}
.section--dark .lead { color: var(--ink-3); }
.body { font-size: 16.5px; line-height: 1.95; color: var(--ink-2); margin: 0; }
.num { font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

.sec-head { max-width: 860px; }
.sec-head .h2 { margin-top: 15px; }
.sec-head .lead { margin-top: 20px; max-width: 720px; }
.sec-head--center { margin-inline: auto; text-align: center; }
.sec-head--center .lead { margin-inline: auto; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto;
  height: var(--nav-h);
  z-index: 90;
  display: flex;
  align-items: center;
  padding-inline: clamp(20px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.001);
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--line-soft);
}
.nav__inner {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 9px; flex: none; }
.brand svg { flex: none; }
.brand__name {
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.nav__links { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 38px); }
.nav__link {
  position: relative;
  font-size: 13.5px;
  color: var(--ink);
  padding: 6px 0;
  white-space: nowrap;
  transition: color 0.25s ease, opacity 0.25s ease;
  opacity: 0.82;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1.5px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.nav__link:hover { opacity: 1; }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { opacity: 1; }
.nav__right { display: flex; align-items: center; gap: 20px; flex: none; }
.nav__tel {
  font-size: 13.5px;
  color: var(--ink-2);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  transition: color 0.25s ease;
}
.nav__tel:hover { color: var(--ink); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 30px;
  border-radius: 980px;
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), background 0.25s ease,
    color 0.25s ease, box-shadow 0.35s ease, border-color 0.25s ease;
  will-change: transform;
}
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: 0 10px 26px rgba(0, 113, 227, 0.28); }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.24); }
.btn--ghost { border: 1px solid rgba(255, 255, 255, 0.34); color: #fff; }
.btn--ghost:hover { border-color: rgba(255, 255, 255, 0.7); }
.btn--sm { height: 34px; padding: 0 17px; font-size: 13px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15.5px;
  color: var(--blue);
  transition: gap 0.3s var(--ease);
}
.link-arrow:hover { gap: 11px; }
.link-arrow svg { flex: none; }

/* ---------- Hero ---------- */
.hero { padding-top: calc(var(--nav-h) + clamp(48px, 8vw, 92px)); text-align: center; }
.hero__head { max-width: 980px; margin-inline: auto; padding-inline: var(--gutter); }
.hero__title { margin-top: 22px; }
.hero__title span { display: block; }
.hero__sub {
  max-width: 860px;
  margin: 26px auto 0;
  font-size: clamp(16px, 1.4vw, 21px);
  line-height: 1.72;
  color: var(--ink-2);
  text-wrap: pretty;
  text-wrap: balance;
}
.hero__actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
}
.hero__media {
  margin-top: clamp(40px, 5vw, 66px);
  position: relative;
  overflow: hidden;
  background: var(--bg-soft);
  height: clamp(300px, 46vw, 620px);
}
.hero__media img {
  width: 100%;
  height: 112%;
  object-fit: cover;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}
.hero__caption {
  padding: 22px var(--gutter) clamp(40px, 5vw, 62px);
  text-align: center;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--ink-3);
  letter-spacing: 0.01em;
}

/* ---------- 关于 ---------- */
.about__row {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
.about__left .h2 { margin-top: 16px; }
.about__right { display: grid; gap: 20px; }
.about__right .body:first-child { color: var(--ink); font-size: 18px; line-height: 1.85; }
.stats {
  margin-top: clamp(52px, 6vw, 84px);
  padding-top: 40px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}
.stat__num {
  font-size: clamp(38px, 4.2vw, 56px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat__label { margin-top: 14px; font-size: 13.5px; line-height: 1.6; color: var(--ink-2); }
.values {
  margin-top: 44px;
  font-size: 14px;
  letter-spacing: 0.42em;
  color: var(--ink-3);
  font-weight: 500;
}

/* ---------- 业务卡 ---------- */
.cards3 {
  margin-top: clamp(38px, 4.6vw, 64px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.bcard {
  display: flex;
  flex-direction: column;
  padding: clamp(28px, 3vw, 44px) clamp(24px, 2.6vw, 40px) clamp(26px, 2.4vw, 38px);
  border-radius: 24px;
  background: var(--bg-soft);
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease), background 0.4s ease;
  min-height: 320px;
}
.bcard:hover { transform: translateY(-6px); box-shadow: 0 22px 50px rgba(0, 0, 0, 0.09); }
.bcard__no {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.bcard__title { margin-top: 18px; }
.bcard__desc { margin-top: 16px; font-size: 15px; line-height: 1.9; color: var(--ink-2); flex: 1; }
.bcard__tags {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.bcard--dark { background: var(--ink); }
.bcard--dark .bcard__no { color: var(--gold-2); }
.bcard--dark .bcard__title { color: #fff; }
.bcard--dark .bcard__desc { color: var(--ink-4); }
.bcard--dark .bcard__tags { color: #fff; border-top-color: rgba(255, 255, 255, 0.16); }

/* ---------- 园区（交互） ---------- */
.parks {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(32px, 5.4vw, 76px);
  align-items: center;
  margin-top: clamp(40px, 5vw, 64px);
}
.parks__list { margin: 0; padding: 0; list-style: none; }
.prow {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  text-align: left;
  padding: 26px 0;
  border-top: 1px solid #2c2c2e;
  transition: opacity 0.4s ease;
  position: relative;
}
.prow:last-child { border-bottom: 1px solid #2c2c2e; }
.prow::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -1px;
  height: 1px;
  background: var(--gold-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.65s var(--ease);
}
.prow:hover::before,
.prow.is-active::before { transform: scaleX(1); }
.prow__name {
  font-size: clamp(19px, 1.7vw, 24px);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: #fff;
  transition: color 0.3s ease;
}
.prow__ind {
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-3);
}
.prow__area {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.parks__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  opacity: 0.86;
  transition: opacity 0.3s ease, gap 0.35s var(--ease);
}
.parks__link:hover { opacity: 1; gap: 14px; }

.parks__media {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  aspect-ratio: 6 / 5;
  background: #111;
}
.parks__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: calc(100% + 1px);
  object-fit: cover;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 0.9s ease, transform 1.4s var(--ease);
}
.parks__media img.on { opacity: 1; transform: scale(1); }
.parks__tag {
  position: absolute;
  left: 18px; bottom: 18px;
  padding: 7px 14px;
  border-radius: 980px;
  font-size: 12px;
  color: #fff;
  background: rgba(0, 0, 0, 0.42);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

/* ---------- 案例 ---------- */
.filters {
  margin-top: clamp(30px, 3.4vw, 44px);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  height: 36px;
  padding: 0 18px;
  border-radius: 980px;
  font-size: 13px;
  color: var(--ink-2);
  background: var(--bg-soft);
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s var(--ease);
}
.chip:hover { color: var(--ink); transform: translateY(-1px); }
.chip.is-on { background: var(--ink); color: #fff; }

.cases {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.case {
  display: flex;
  flex-direction: column;
  padding: 30px 28px 26px;
  border-radius: 22px;
  background: var(--bg-soft);
  transition: transform 0.55s var(--ease), box-shadow 0.55s var(--ease),
    opacity 0.45s ease, background 0.4s ease;
  min-height: 240px;
}
.case:hover { transform: translateY(-5px); box-shadow: 0 20px 44px rgba(0, 0, 0, 0.1); }
.case__meta { font-size: 11.5px; color: var(--ink-3); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.case__name {
  margin-top: 13px;
  font-size: 20px;
  line-height: 1.42;
  font-weight: 700;
  letter-spacing: -0.015em;
}
.case__spec { margin-top: auto; padding-top: 22px; font-size: 13px; line-height: 1.85; color: var(--ink-2); }
.case__spec b { display: block; color: var(--ink); font-weight: 500; font-size: 13.5px; margin-top: 3px; }
.case--dark { background: var(--ink); }
.case--dark .case__meta { color: var(--ink-3); }
.case--dark .case__name { color: #fff; }
.case--dark .case__spec { color: var(--ink-4); }
.case--dark .case__spec b { color: #fff; }
.case.is-hidden { display: none; }
.cases__note {
  margin-top: 28px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-4);
  line-height: 1.9;
}

/* ---------- 时间轴 ---------- */
.timeline {
  margin-top: clamp(36px, 4vw, 54px);
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.step { padding-top: 20px; border-top: 1px solid var(--line); position: relative; }
.step::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  height: 1px; width: 100%;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.9s var(--ease);
  transition-delay: var(--d, 0s);
}
.step.in::before { transform: scaleX(1); }
.step__no { font-size: 11.5px; font-weight: 600; color: var(--gold); letter-spacing: 0.06em; }
.step__name { margin-top: 8px; font-size: 17.5px; font-weight: 700; letter-spacing: -0.01em; }
.step__desc { margin-top: 8px; font-size: 12.8px; line-height: 1.85; color: var(--ink-2); }
.timeline__media {
  margin-top: clamp(38px, 4.4vw, 58px);
  border-radius: 22px;
  overflow: hidden;
  height: clamp(240px, 32vw, 460px);
}
.timeline__media img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 背书 ---------- */
.proof {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(36px, 6vw, 88px);
  margin-top: clamp(40px, 5vw, 62px);
  align-items: start;
}
.proof__quote {
  font-size: clamp(20px, 1.72vw, 25px);
  line-height: 1.72;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.proof__src { margin-top: 22px; font-size: 13px; line-height: 1.95; color: var(--ink-3); }
.plist { margin: 0; padding: 0; list-style: none; }
.pitem { padding: 24px 0; border-top: 1px solid var(--line); }
.pitem:last-child { border-bottom: 1px solid var(--line); }
.pitem__t { font-size: 17.5px; font-weight: 700; letter-spacing: -0.01em; }
.pitem__d { margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: var(--ink-2); }

/* ---------- CTA ---------- */
.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.cta__title { margin-top: 20px; }
.cta__sub { margin-top: 22px; max-width: 520px; }
.contact { margin-top: 30px; display: grid; gap: 6px; }
.contact__name { font-size: 15px; color: #fff; font-weight: 500; }
.contact__tel {
  font-size: clamp(21px, 1.9vw, 24px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.contact__addr { font-size: 12.5px; line-height: 1.85; color: var(--ink-3); }
.cta__actions { margin-top: 28px; display: flex; gap: 16px; flex-wrap: wrap; }

.qr-card {
  width: 340px;
  padding: 30px 30px 26px;
  border-radius: 26px;
  background: #fff;
  color: var(--ink);
  display: grid;
  justify-items: center;
  gap: 16px;
  text-align: center;
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease);
}
.qr-card:hover { transform: translateY(-4px); box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5); }
.qr-card__eyebrow { font-size: 11.5px; color: var(--ink-3); letter-spacing: 0.14em; }
.qr-frame {
  position: relative;
  width: 232px;
  height: 232px;
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
  display: grid;
  place-items: center;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
}
.qr-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
}
.qr-frame.is-broken img { display: none; }
.qr-frame.is-broken::after {
  content: "二维码加载失败，请拨打 139 2335 2866";
  padding: 0 20px;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink-3);
  text-align: center;
}
.qr-tip { font-size: 11.5px; line-height: 1.7; color: var(--ink-3); letter-spacing: 0.02em; }
.qr-card__t { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.qr-card__d { font-size: 12px; color: var(--ink-3); }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-soft); padding-top: clamp(56px, 6vw, 76px); padding-bottom: 40px; }
.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(36px, 5vw, 60px);
  align-items: start;
}
.footer__brand { max-width: 340px; }
.footer__tag { margin-top: 16px; font-size: 12.8px; line-height: 1.9; color: var(--ink-3); }
.footer__cols { display: flex; gap: clamp(40px, 6vw, 80px); }
.fcol { display: grid; gap: 11px; align-content: start; }
.fcol__h { font-size: 12px; font-weight: 700; color: var(--ink); margin-bottom: 3px; }
.fcol a, .fcol span { font-size: 12.8px; color: var(--ink-2); transition: color 0.25s ease; }
.fcol a:hover { color: var(--ink); }
.wordmark {
  margin-top: clamp(48px, 6vw, 80px);
  padding-top: 0.08em;
  font-size: clamp(56px, 11vw, 132px);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.045em;
  color: #e2e2e7;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
}
.footer__rule { height: 1px; background: var(--line); margin-top: 28px; }
.footer__bottom {
  margin-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 11.8px;
  color: var(--ink-3);
}

/* ---------- 二级页面 ---------- */
.subnav { background: rgba(255, 255, 255, 0.92); }
.crumb { font-size: 12.5px; color: var(--ink-3); }
.crumb a:hover { color: var(--ink); }
.page-hero { padding-top: calc(var(--nav-h) + clamp(36px, 5vw, 56px)); padding-bottom: clamp(36px, 4vw, 52px); }
.page-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.page-hero__media {
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 6 / 5;
  background: var(--bg-soft);
}
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.page-hero .h1 { font-size: clamp(36px, 4.4vw, 58px); }
.page-hero__claim {
  margin-top: 20px;
  font-size: clamp(18px, 1.6vw, 23px);
  line-height: 1.62;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-hero__desc { margin-top: 18px; max-width: 520px; font-size: 15.5px; line-height: 1.9; color: var(--ink-2); }
.page-hero__actions { margin-top: 28px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }

.switcher { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 22px; }
.switcher a {
  height: 31px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 980px;
  font-size: 12.5px;
  color: var(--ink-2);
  border: 1px solid var(--line);
  transition: all 0.3s ease;
}
.switcher a:hover { border-color: var(--ink-3); color: var(--ink); }
.switcher a.on { background: var(--ink); border-color: var(--ink); color: #fff; }

.specbar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px;
  padding: 32px 0 6px;
  border-top: 1px solid var(--line);
}
.spec__l { font-size: 11.8px; color: var(--ink-3); }
.spec__v { margin-top: 8px; font-size: 17.5px; font-weight: 700; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.split__media { border-radius: 24px; overflow: hidden; aspect-ratio: 6 / 4; }
.split__media img { width: 100%; height: 100%; object-fit: cover; }
.bullets { margin: 26px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.bullets li { position: relative; padding-left: 18px; font-size: 14px; color: var(--ink); line-height: 1.7; }
.bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.68em;
  width: 5px; height: 5px;
  background: var(--gold);
}

.parcels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: clamp(34px, 4vw, 48px);
}
.parcel { padding: 28px 26px; border-radius: 20px; background: #fff; display: grid; gap: 8px; }
.parcel__tag { font-size: 11.5px; font-weight: 600; color: var(--gold); letter-spacing: 0.06em; }
.parcel__area { font-size: 30px; font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.parcel__line { font-size: 13.5px; color: var(--ink-2); }
.parcel__fit { margin-top: 10px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 13px; font-weight: 500; }
.parcel--dark { background: var(--ink); }
.parcel--dark .parcel__tag { color: var(--gold-2); }
.parcel--dark .parcel__area { color: #fff; }
.parcel--dark .parcel__line { color: var(--ink-4); }
.parcel--dark .parcel__fit { color: #fff; border-top-color: rgba(255, 255, 255, 0.16); }

.amenities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 40px;
  margin-top: clamp(30px, 3.4vw, 44px);
}
.amenity { padding-top: 18px; border-top: 1px solid var(--line); }
.amenity__n { font-size: 14px; font-weight: 700; }
.amenity__d { margin-top: 7px; font-size: 13.5px; line-height: 1.8; color: var(--ink-2); }

.flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; margin-top: clamp(30px, 3.4vw, 44px); }
.flow .step { padding-right: 12px; }

/* 案例详情 */
.casehero__meta { margin-top: 20px; font-size: 13.5px; font-weight: 500; color: var(--ink); }
.casehero__meta span { color: var(--ink-4); margin: 0 8px; }
.casemedia { height: clamp(280px, 42vw, 520px); overflow: hidden; }
.casemedia img { width: 100%; height: calc(100% + 1px); object-fit: cover; }
.databar {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 20px;
  padding: clamp(36px, 4vw, 52px) var(--gutter) 8px;
  max-width: 1440px;
  margin: 0 auto;
}
.data__n { font-size: clamp(26px, 2.7vw, 40px); font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.data__l { margin-top: 9px; font-size: 12.5px; color: var(--ink-3); }
.data--gold .data__n { color: var(--gold); }

.artrow { display: grid; grid-template-columns: 370px minmax(0, 1fr); gap: clamp(28px, 4vw, 72px); align-items: start; }
.worklist { margin-top: 26px; border-bottom: 1px solid var(--line); }
.work { padding: 24px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 44px 260px minmax(0, 1fr); gap: 24px; align-items: start; }
.work__no { font-size: 11.5px; font-weight: 600; color: var(--gold); letter-spacing: 0.06em; padding-top: 5px; }
.work__t { font-size: 18.5px; font-weight: 700; letter-spacing: -0.01em; }
.work__d { font-size: 14px; line-height: 1.85; color: var(--ink-2); }

.resultband { background: #000; color: #fff; padding-block: clamp(48px, 5vw, 68px); }
.resultband__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.resultband__n { font-size: clamp(26px, 3vw, 36px); font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; color: #fff; }
.resultband__n.gold { color: var(--gold-2); }
.resultband__l { margin-top: 10px; font-size: 12.5px; color: var(--ink-3); }
.resultband__note { margin-top: 30px; font-size: 11.8px; color: var(--ink-2); }

.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: clamp(36px, 4vw, 50px); }
.gallery div { border-radius: 16px; overflow: hidden; aspect-ratio: 4 / 3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.gallery div:hover img { transform: scale(1.05); }

.related[data-p-others] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rcard .case__meta, .rcard .case__name, .rcard .case__spec { margin-top: 0; }
.rcard .case__spec { padding-top: 0; }
.related { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 30px; }
.rcard { padding: 24px 22px; border-radius: 18px; background: #fff; display: grid; gap: 9px; transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease); }
.rcard:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08); }

/* 二维码弹层 */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.62);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.modal.open { opacity: 1; pointer-events: auto; }
.modal__box {
  width: min(400px, 100%);
  background: #fff;
  border-radius: 26px;
  padding: 34px 32px 28px;
  display: grid;
  justify-items: center;
  gap: 15px;
  text-align: center;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.5s var(--ease);
}
.modal.open .modal__box { transform: none; }
.modal__close {
  position: absolute;
  top: 22px; right: 22px;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 18px;
  line-height: 1;
}
.modal__close:hover { background: rgba(255, 255, 255, 0.3); }
.modal .qr-frame { width: 276px; height: 276px; }
.modal__row { display: flex; gap: 10px; margin-top: 4px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 20px);
  background: rgba(29, 29, 31, 0.94);
  color: #fff;
  font-size: 13px;
  padding: 11px 20px;
  border-radius: 980px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.45s var(--ease);
  z-index: 300;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 移动菜单 */
.burger { display: none; width: 34px; height: 34px; place-items: center; gap: 5px; }
.burger span { display: block; width: 17px; height: 1.4px; background: var(--ink); transition: transform 0.4s var(--ease), opacity 0.3s ease; }
.nav.open .burger span:nth-child(1) { transform: translateY(6.4px) rotate(45deg); }
.nav.open .burger span:nth-child(2) { opacity: 0; }
.nav.open .burger span:nth-child(3) { transform: translateY(-6.4px) rotate(-45deg); }
.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 auto;
  z-index: 89;
  background: rgba(255, 255, 255, 0.98);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line-soft);
  padding: 18px var(--gutter) 28px;
  display: grid;
  gap: 2px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.45s var(--ease);
}
.mobile-menu.open { opacity: 1; transform: none; pointer-events: auto; }
.mobile-menu a { padding: 14px 0; font-size: 17px; font-weight: 500; border-bottom: 1px solid var(--line-soft); }
.mobile-menu .btn { margin-top: 18px; width: 100%; }

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.95s var(--ease), transform 0.95s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* 交互卡在入场之后仍保留 hover 位移 */
.bcard.reveal.in:hover,
.case.reveal.in:hover { transform: translateY(-6px); box-shadow: 0 22px 50px rgba(0, 0, 0, 0.09); }
.qr-card.reveal.in:hover { transform: translateY(-4px); box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* 锚点滚动避开固定导航 */
section[id], .page-hero[id], main[id] { scroll-margin-top: calc(var(--nav-h) + 18px); }

/* 区段标题行（左标题 + 右说明） */
.sec-head-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: end;
}
.sec-head-row .lead { max-width: 420px; font-size: 15.5px; }
@media (max-width: 900px) {
  .sec-head-row { grid-template-columns: 1fr; gap: 20px; align-items: start; }
  .sec-head-row .lead { max-width: 100%; }
}
.row-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .row-head { flex-direction: column; align-items: flex-start; }
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav__links, .nav__tel { display: none; }
  .burger { display: grid; }
  .about__row { grid-template-columns: 1fr; gap: 32px; }
  .cards3 { grid-template-columns: 1fr; }
  .bcard { min-height: 0; }
  .parks { grid-template-columns: 1fr; }
  .parks__media { order: -1; aspect-ratio: 16 / 10; }
  .cases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px 16px; }
  .proof { grid-template-columns: 1fr; gap: 34px; }
  .cta { grid-template-columns: 1fr; }
  .qr-card { width: 100%; max-width: 400px; }
  .page-hero__grid { grid-template-columns: 1fr; }
  .page-hero__media { order: -1; aspect-ratio: 16 / 10; }
  .split { grid-template-columns: 1fr; }
  .specbar { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px 18px; }
  .parcels { grid-template-columns: 1fr; }
  .amenities { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .databar { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 18px; }
  .artrow { grid-template-columns: 1fr; gap: 26px; }
  .work { grid-template-columns: 36px 1fr; gap: 12px 16px; }
  .work__d { grid-column: 2; }
  .gallery { grid-template-columns: 1fr; }
  .related { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .resultband__grid { grid-template-columns: 1fr; gap: 22px; }
}

@media (max-width: 720px) {
  :root { --nav-h: 58px; }
  .hero { padding-top: calc(var(--nav-h) + 44px); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 20px; }
  .cases { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__cols { gap: 32px; flex-wrap: wrap; }
  .qr-card { padding: 26px 22px 22px; }
  .qr-frame { width: 200px; height: 200px; }
  .hero__actions { gap: 18px; }
  .btn { height: 44px; padding: 0 24px; font-size: 15px; }
  .specbar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__bottom { flex-direction: column; gap: 8px; }
}