:root {
  --teal: #0f6e56;
  --teal-dark: #0a5342;
  --teal-deep: #04342c;
  --teal-50: #e1f5ee;
  --teal-100: #9fe1cb;
  --amber: #ba7517;
  --ink: #1c1c1a;
  --text: #2c2c2a;
  --muted: #5f5e5a;
  --hint: #8a887f;
  --line: #e3e1d9;
  --line-strong: #d3d1c7;
  --bg: #f7f6f2;
  --white: #ffffff;
  --red: #a32d2d;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --shadow: 0 1px 2px rgba(28, 28, 26, 0.04), 0 12px 32px -18px rgba(28, 28, 26, 0.22);
  --font: "Inter", "HarmonyOS Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.3; letter-spacing: -0.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--flush { padding-top: 48px; }
.section--bg { background: var(--bg); }
.section--dark { background: var(--teal-deep); color: #eaf3ef; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
  text-transform: uppercase;
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  display: block;
}
.section--dark .eyebrow { color: var(--teal-100); }

.h2 { font-size: 40px; margin: 18px 0 0; }
.lead { font-size: 17px; color: var(--muted); max-width: 620px; margin-top: 16px; line-height: 1.8; }
.section--dark .lead { color: #a9c6bd; }

.head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--teal); color: #fff; }
.btn--primary:hover { background: var(--teal-dark); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn--light { background: #fff; color: var(--teal-deep); }
.btn--light:hover { background: var(--teal-50); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal);
}
.link-arrow span { transition: transform 0.2s ease; display: inline-block; }
.link-arrow:hover span { transform: translateX(4px); }

/* ---------- header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--teal);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 500;
}
.brand__name { font-size: 16px; font-weight: 500; letter-spacing: 0.02em; line-height: 1.1; }
.brand__en { font-size: 10px; letter-spacing: 0.22em; color: var(--hint); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
  font-size: 14.5px;
  color: var(--muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.18s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--teal);
  transition: width 0.22s ease;
}
.nav a:hover, .nav a.is-active { color: var(--text); }
.nav a:hover::after, .nav a.is-active::after { width: 100%; }
.header__actions { display: flex; align-items: center; gap: 18px; }
.header__phone { font-size: 14px; color: var(--text); font-variant-numeric: tabular-nums; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--text); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: var(--text);
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

.drawer {
  display: none;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 12px 24px 20px;
}
.drawer.is-open { display: block; }
.drawer a { display: block; padding: 12px 0; font-size: 15px; border-bottom: 1px solid var(--line); color: var(--text); }
.drawer .btn { width: 100%; margin-top: 16px; color: #fff; }

/* ---------- hero ---------- */
.hero { background: var(--bg); padding: 72px 0 88px; overflow: hidden; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--teal);
  font-size: 12.5px;
  padding: 7px 14px;
  border-radius: 999px;
}
.hero__badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}
.hero h1 {
  font-size: 58px;
  line-height: 1.16;
  margin: 22px 0 20px;
  color: var(--ink);
  letter-spacing: -0.035em;
}
.hero h1 em { font-style: normal; color: var(--teal); }
.hero__desc { font-size: 17px; color: var(--muted); max-width: 500px; line-height: 1.85; }
.hero__cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.hero__media { position: relative; }
.hero__frame {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  background: var(--teal-deep);
}
.hero__frame video, .hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 52, 44, 0) 45%, rgba(4, 52, 44, 0.45) 100%);
}
.hero__tag {
  position: absolute;
  left: 18px;
  top: 18px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 5px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.hero__tag i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #7ee0b8;
  display: block;
}

.metric-card {
  position: absolute;
  right: -28px;
  bottom: -28px;
  width: 264px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.metric-card__note { font-size: 11px; letter-spacing: 0.1em; color: var(--hint); margin-bottom: 6px; }
.metric-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.metric-row:last-child { border-bottom: 0; padding-bottom: 2px; }
.metric-row b { font-size: 26px; font-weight: 500; color: var(--teal); line-height: 1; letter-spacing: -0.03em; }
.metric-row b i { font-size: 12px; font-style: normal; margin-left: 3px; letter-spacing: 0; }
.metric-row span { font-size: 12.5px; color: var(--muted); }

/* ---------- clients ---------- */
.clients { border-bottom: 1px solid var(--line); background: #fff; }
.clients__inner {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 26px 0;
  flex-wrap: wrap;
}
.clients__label { font-size: 12px; color: var(--hint); letter-spacing: 0.08em; flex-shrink: 0; }
.clients__list { display: flex; gap: 42px; flex-wrap: wrap; flex: 1; }
.clients__list span {
  font-size: 15px;
  color: #a8a69c;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}
.clients__list span:hover { color: var(--muted); }

/* ---------- services ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.svc {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.svc:hover { border-color: var(--teal); transform: translateY(-4px); box-shadow: var(--shadow); }
.svc__media { aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg); }
.svc__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.svc:hover .svc__media img { transform: scale(1.04); }
.svc__body { padding: 26px 28px 28px; }
.svc__head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.svc__no { font-size: 12px; color: var(--teal); letter-spacing: 0.12em; font-variant-numeric: tabular-nums; }
.svc__en { font-size: 11px; color: var(--hint); letter-spacing: 0.08em; text-transform: uppercase; margin-left: auto; }
.svc h3 { font-size: 22px; margin-bottom: 10px; }
.svc p { font-size: 14.5px; color: var(--muted); line-height: 1.75; }
.svc__points { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.svc__points li {
  font-size: 12px;
  color: var(--muted);
  background: var(--bg);
  border-radius: 999px;
  padding: 4px 11px;
}

/* ---------- method ---------- */
.method { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 72px; align-items: start; }
.method__media { border-radius: var(--r-lg); overflow: hidden; position: sticky; top: 100px; }
.method__media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.steps { display: flex; flex-direction: column; margin-top: 30px; }
.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.step:first-child { padding-top: 0; }
.step:last-child { border-bottom: 0; }
.step__no {
  font-size: 13px;
  color: var(--teal);
  letter-spacing: 0.1em;
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}
.step h4 { font-size: 18px; margin-bottom: 6px; }
.step p { font-size: 14.5px; color: var(--muted); }

/* ---------- industries ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ind {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: flex-end;
  transition: transform 0.3s ease;
}
.ind:hover { transform: translateY(-4px); }
.ind img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.ind:hover img { transform: scale(1.05); }
.ind::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 52, 44, 0) 34%, rgba(4, 52, 44, 0.58) 62%, rgba(4, 52, 44, 0.95) 100%);
}
.ind__body { position: relative; z-index: 2; padding: 24px; color: #fff; text-shadow: 0 1px 3px rgba(4, 52, 44, 0.4); }
.ind__body h4 { font-size: 19px; margin-bottom: 6px; }
.ind__body p { font-size: 13px; color: rgba(255, 255, 255, 0.78); line-height: 1.6; }
.ind__count { font-size: 11px; letter-spacing: 0.06em; color: var(--teal-100); margin-top: 10px; display: block; }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat { border-left: 1px solid rgba(255, 255, 255, 0.16); padding-left: 26px; }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b {
  display: block;
  font-size: 52px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.stat b i { font-size: 20px; font-style: normal; margin-left: 4px; color: var(--teal-100); }
.stat b span { display: inline; margin: 0; font-size: inherit; color: inherit; }
.stat > span { display: block; margin-top: 14px; font-size: 13.5px; color: #a9c6bd; }

/* ---------- cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.case:hover { border-color: var(--line-strong); transform: translateY(-4px); box-shadow: var(--shadow); }
.case__media { aspect-ratio: 16 / 10; overflow: hidden; }
.case__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.case:hover .case__media img { transform: scale(1.04); }
.case__body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.case__meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--hint); }
.tag {
  font-size: 11.5px;
  color: var(--teal);
  background: var(--teal-50);
  border-radius: 999px;
  padding: 3px 10px;
}
.case h3 { font-size: 17px; line-height: 1.5; }
.case__result { display: flex; gap: 22px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.case__result div b { display: block; font-size: 20px; font-weight: 500; color: var(--teal); letter-spacing: -0.02em; }
.case__result div span { font-size: 11.5px; color: var(--hint); }

/* ---------- film ---------- */
.film { position: relative; background: var(--teal-deep); overflow: hidden; }
.film__frame { position: relative; aspect-ratio: 21 / 9; }
.film__frame video, .film__frame img { width: 100%; height: 100%; object-fit: cover; }
.film__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 52, 44, 0.96) 0%, rgba(4, 52, 44, 0.82) 42%, rgba(4, 52, 44, 0.3) 100%);
  display: flex;
  align-items: center;
}
.film__body { max-width: 480px; color: #fff; }
.film .eyebrow, .cta .eyebrow { color: var(--teal-100); }
.film__body h2 { font-size: 36px; margin: 16px 0 14px; }
.film__body p { font-size: 15px; color: rgba(255, 255, 255, 0.72); line-height: 1.8; }
.play-btn {
  position: absolute;
  right: 64px;
  bottom: 56px;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.2s ease;
}
.play-btn:hover { background: rgba(255, 255, 255, 0.22); transform: scale(1.04); }
.play-btn svg { width: 22px; height: 22px; margin-left: 3px; }

/* ---------- insights ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.post { display: flex; flex-direction: column; gap: 14px; }
.post__media { aspect-ratio: 16 / 10; border-radius: var(--r-md); overflow: hidden; }
.post__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.post:hover .post__media img { transform: scale(1.04); }
.post__meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--hint); }
.post h3 { font-size: 18px; line-height: 1.55; }
.post:hover h3 { color: var(--teal); }
.post p { font-size: 14px; color: var(--muted); line-height: 1.75; }

/* ---------- cta ---------- */
.cta { background: var(--teal); color: #fff; }
.cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 64px 0;
  flex-wrap: wrap;
}
.cta h2 { font-size: 34px; margin-bottom: 12px; }
.cta p { font-size: 15px; color: rgba(255, 255, 255, 0.78); max-width: 520px; }
.cta__actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.cta__phone { font-size: 15px; color: #fff; }
.cta__phone b { font-size: 24px; font-weight: 500; letter-spacing: -0.02em; display: block; }
.cta__phone span { font-size: 12px; color: rgba(255, 255, 255, 0.7); }

/* ---------- forms ---------- */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px;
}
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(15, 110, 86, 0.1);
}
.field textarea { resize: vertical; min-height: 96px; }
.field .err { font-size: 12.5px; color: var(--red); margin-top: 6px; display: none; }
.field.is-error input, .field.is-error select { border-color: var(--red); }
.field.is-error .err { display: block; }
.form-note { font-size: 12px; color: var(--hint); margin-top: 14px; line-height: 1.7; }
.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.is-on { display: block; }
.form-success__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--teal-50);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}
.form-success h3 { font-size: 20px; margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--muted); }

/* ---------- page hero ---------- */
.page-hero { background: var(--bg); padding: 64px 0 56px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 46px; margin: 16px 0 14px; letter-spacing: -0.03em; }
.page-hero p { font-size: 16px; color: var(--muted); max-width: 640px; }

/* ---------- service detail blocks ---------- */
.svc-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}
.svc-block:last-child { border-bottom: 0; }
.svc-block:first-child { padding-top: 12px; }
.svc-block:nth-child(even) .svc-block__media { order: 2; }
.svc-block__media { border-radius: var(--r-lg); overflow: hidden; aspect-ratio: 4 / 3; }
.svc-block__media img { width: 100%; height: 100%; object-fit: cover; }
.svc-block h3 { font-size: 30px; margin: 12px 0 14px; }
.svc-block p { font-size: 15px; color: var(--muted); line-height: 1.85; }
.check-list { margin-top: 22px; display: grid; gap: 10px; }
.check-list li { display: flex; gap: 10px; font-size: 14.5px; color: var(--text); align-items: flex-start; }
.check-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  margin-top: 10px;
  flex-shrink: 0;
}

/* ---------- filter ---------- */
.filter { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.chip {
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 13.5px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.18s ease;
}
.chip:hover { border-color: var(--teal); color: var(--teal); }
.chip.is-on { background: var(--teal); border-color: var(--teal); color: #fff; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.about-media { border-radius: var(--r-lg); overflow: hidden; }
.about-media img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; }
.timeline { margin-top: 32px; }
.tl-item { display: grid; grid-template-columns: 76px 1fr; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); }
.tl-item b { font-size: 15px; color: var(--teal); font-weight: 500; }
.tl-item p { font-size: 14.5px; color: var(--muted); }
.cert-list { display: grid; gap: 12px; margin-top: 24px; }
.cert-list li { display: flex; gap: 10px; align-items: center; font-size: 14.5px; color: var(--muted); }
.cert-list li::before {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--teal);
  flex-shrink: 0;
  background: radial-gradient(circle, var(--teal) 0 3px, transparent 3px);
}
.city-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin-top: 28px; }
.city {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 14px 8px;
  text-align: center;
  font-size: 13.5px;
  color: var(--muted);
  background: #fff;
}

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact-item { padding: 22px 0; border-bottom: 1px solid var(--line); }
.contact-item span { font-size: 12px; color: var(--hint); letter-spacing: 0.06em; }
.contact-item b { display: block; font-size: 18px; font-weight: 500; margin-top: 6px; letter-spacing: -0.01em; }
.contact-item p { font-size: 14.5px; color: var(--muted); margin-top: 4px; }

/* ---------- article ---------- */
.article { max-width: 760px; margin: 0 auto; }
.article__meta { display: flex; gap: 12px; align-items: center; color: var(--hint); font-size: 13px; }
.article h1 { font-size: 40px; margin: 18px 0 28px; letter-spacing: -0.03em; }
.article__cover { border-radius: var(--r-lg); overflow: hidden; margin-bottom: 36px; }
.article__cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article__body p { font-size: 16.5px; color: #3a3a37; line-height: 1.95; margin-bottom: 22px; }
.article__body p:first-child { font-size: 18px; color: var(--text); }

/* ---------- footer ---------- */
.footer { background: #14140f; color: #9c9a92; padding: 72px 0 0; }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 56px; }
.footer .brand__name { color: #fff; }
.footer .brand__mark { background: var(--teal); }
.footer__desc { font-size: 13.5px; line-height: 1.9; margin-top: 18px; max-width: 300px; color: #8a887f; }
.footer__col h5 { font-size: 13px; color: #fff; font-weight: 500; margin: 0 0 18px; letter-spacing: 0.06em; }
.footer__col a, .footer__col p { display: block; font-size: 13.5px; color: #9c9a92; margin-bottom: 12px; transition: color 0.18s ease; }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: #6e6c65;
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal.no-anim { transition: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .svc__media img, .case__media img, .post__media img, .ind img { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav, .header__phone { display: none; }
  .nav-toggle { display: flex; }
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .hero h1 { font-size: 44px; }
  .hero__media { max-width: 520px; }
  .metric-card { right: 0; bottom: -20px; }
  .method { grid-template-columns: 1fr; gap: 40px; }
  .method__media { position: static; max-width: 480px; }
  .svc-grid, .case-grid, .post-grid { grid-template-columns: repeat(2, 1fr); }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-grid, .contact-grid, .svc-block { grid-template-columns: 1fr; gap: 36px; }
  .svc-block:nth-child(even) .svc-block__media { order: 0; }
  .film__frame { aspect-ratio: 16 / 9; }
  .play-btn { right: 32px; bottom: 32px; width: 64px; height: 64px; }
}

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .h2 { font-size: 30px; }
  .hero { padding: 48px 0 64px; }
  .hero h1 { font-size: 34px; }
  .hero__desc { font-size: 15.5px; }
  .hero__cta .btn { flex: 1; }
  .metric-card { position: static; width: 100%; margin-top: 16px; box-shadow: none; }
  .hero__frame { aspect-ratio: 4 / 3.6; }
  .svc-grid, .case-grid, .post-grid, .ind-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .stat { border-left: 0; padding-left: 0; }
  .stat b { font-size: 38px; }
  .city-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__top { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 32px; }
  .form-card { padding: 24px; }
  .film__overlay { background: linear-gradient(180deg, rgba(4, 52, 44, 0.55) 0%, rgba(4, 52, 44, 0.92) 100%); align-items: flex-end; padding-bottom: 24px; }
  .film__body h2 { font-size: 24px; }
  .film__frame { aspect-ratio: 4 / 5; }
  .play-btn { display: none; }
  .cta__inner { padding: 48px 0; }
  .cta h2 { font-size: 26px; }
  .article h1 { font-size: 28px; }
  .clients__inner { gap: 20px; }
  .clients__list { gap: 24px; }
}

/* ============================================================
   移动端专项优化（≤720px）
   仅覆盖手机布局，不影响桌面端
   ============================================================ */

.mobile-bar { display: none; }
.header__tel { display: none; }

@media (max-width: 720px) {
  html { -webkit-text-size-adjust: 100%; }
  body { -webkit-tap-highlight-color: transparent; }
  body.has-mobile-bar { padding-bottom: calc(66px + env(safe-area-inset-bottom)); }

  .container { padding: 0 18px; }
  .section { padding: 52px 0; }
  .section--tight { padding: 44px 0; }
  .section--flush { padding-top: 30px; }

  .h2 { font-size: 25px; line-height: 1.35; margin-top: 12px; text-wrap: balance; }
  .lead { font-size: 14.5px; line-height: 1.8; margin-top: 12px; }
  .eyebrow { font-size: 11px; letter-spacing: 0.1em; gap: 8px; }
  .eyebrow::before { width: 16px; }
  .head-row { margin-bottom: 26px; gap: 14px; }
  .link-arrow { font-size: 13.5px; }

  /* ---------- 顶部导航 ---------- */
  .header__inner { height: 58px; gap: 10px; }
  .brand { gap: 8px; }
  .brand__mark { width: 30px; height: 30px; border-radius: 8px; font-size: 15px; }
  .brand__name { font-size: 15px; }
  .brand__en { font-size: 9px; letter-spacing: 0.18em; }
  .header__actions { gap: 8px; }
  .header__actions .btn--sm { display: none; }
  .header__tel {
    display: flex;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    align-items: center;
    justify-content: center;
    color: var(--teal);
  }
  .header__tel svg { width: 17px; height: 17px; }
  .nav-toggle { width: 38px; height: 38px; border-radius: 10px; }
  .drawer { padding: 6px 18px 18px; }
  .drawer a { padding: 14px 0; font-size: 15.5px; }
  .drawer .btn {
    display: flex;
    width: auto;
    height: 46px;
    margin: 18px 0 0;
    align-items: center;
    justify-content: center;
    border-bottom: 0;
  }

  /* ---------- 首屏 ---------- */
  .hero { padding: 26px 0 34px; }
  .hero__grid { gap: 26px; }
  .hero__badge { font-size: 11.5px; padding: 6px 12px; }
  .hero h1 { font-size: 30px; line-height: 1.3; margin: 16px 0 12px; letter-spacing: -0.03em; }
  .hero__desc { font-size: 14.5px; line-height: 1.8; max-width: none; }
  .hero__cta { margin-top: 22px; gap: 8px; }
  .hero__cta .btn { flex: 1 1 0; height: 46px; font-size: 14px; padding: 0 8px; }
  .hero__media { max-width: none; }
  .hero__frame { aspect-ratio: 4 / 3; border-radius: 14px; }
  .hero__tag { top: 12px; left: 12px; font-size: 10px; padding: 4px 8px; }

  /* 指标卡改为三列 KPI 条，省去纵向堆叠 */
  .metric-card {
    width: 100%;
    margin-top: 12px;
    padding: 14px 16px 12px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .metric-card__note { grid-column: 1 / -1; font-size: 10.5px; letter-spacing: 0.08em; margin-bottom: 12px; }
  .metric-row {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0 0 0 12px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }
  .metric-card__note + .metric-row { border-left: 0; padding-left: 0; }
  .metric-row:last-child { padding-bottom: 0; }
  .metric-row b { font-size: 21px; }
  .metric-row b i { font-size: 11px; }
  .metric-row span { font-size: 11px; margin-top: 6px; line-height: 1.35; }

  /* ---------- 客户墙 ---------- */
  .clients__inner { flex-direction: column; align-items: flex-start; gap: 12px; padding: 20px 0 22px; }
  .clients__label { font-size: 11px; letter-spacing: 0.06em; }
  .clients__list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 8px; width: 100%; }
  .clients__list span { font-size: 12.5px; letter-spacing: 0; }

  /* ---------- 服务卡 ---------- */
  .svc-grid { gap: 14px; }
  .svc { border-radius: 14px; }
  .svc__media { aspect-ratio: 16 / 10; }
  .svc__body { padding: 18px 18px 20px; }
  .svc h3 { font-size: 19px; margin-bottom: 8px; }
  .svc p { font-size: 13.5px; line-height: 1.7; }
  .svc__points { margin-top: 12px; gap: 6px; }
  .svc__points li { font-size: 11.5px; padding: 3px 10px; }
  .svc__points li:nth-child(n + 3) { display: none; }

  /* ---------- 交付方法 ---------- */
  .method { gap: 22px; }
  .method__media { order: 2; max-width: none; border-radius: 14px; }
  .method__media img { aspect-ratio: 16 / 10; }
  .steps { margin-top: 22px; }
  .step { grid-template-columns: 32px 1fr; gap: 10px; padding: 16px 0; }
  .step__no { font-size: 11.5px; padding-top: 3px; }
  .step h4 { font-size: 16px; margin-bottom: 4px; }
  .step p { font-size: 13.5px; line-height: 1.7; }

  /* ---------- 行业 ---------- */
  .ind-grid { gap: 12px; }
  .ind { border-radius: 12px; aspect-ratio: 16 / 11; }
  .ind__body { padding: 16px; }
  .ind__body h4 { font-size: 16px; margin-bottom: 4px; }
  .ind__body p { font-size: 12px; line-height: 1.5; }
  .ind__count { font-size: 10.5px; margin-top: 6px; }

  /* ---------- 数据 ---------- */
  .stats { gap: 24px 16px; }
  .stat b { font-size: 32px; }
  .stat b i { font-size: 14px; }
  .stat > span { font-size: 12px; margin-top: 8px; }

  /* ---------- 案例 ---------- */
  .case-grid { gap: 14px; }
  .case { border-radius: 14px; }
  .case__body { padding: 18px; gap: 8px; }
  .case__media { aspect-ratio: 16 / 9; }
  .case h3 { font-size: 15.5px; line-height: 1.55; text-wrap: balance; }
  .case__result { gap: 14px; padding-top: 12px; }
  .case__result div b { font-size: 17px; }
  .case__result div span { font-size: 11px; }
  .tag { font-size: 11px; padding: 2px 8px; }

  /* ---------- 品牌影片：视频在上，文案转到底部 ---------- */
  .film__frame { aspect-ratio: auto; }
  .film__frame video { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
  .film__overlay {
    position: static;
    background: var(--teal-deep);
    padding: 22px 0 26px;
    align-items: flex-start;
  }
  .film__body { max-width: none; }
  .film__body h2 { font-size: 22px; margin: 10px 0 10px; }
  .film__body p { font-size: 13.5px; line-height: 1.75; }

  /* ---------- 文章列表 ---------- */
  .post-grid { gap: 22px; }
  .post { gap: 10px; }
  .post__media { aspect-ratio: 16 / 9; border-radius: 12px; }
  .post h3 { font-size: 16px; text-wrap: balance; }
  .post p { font-size: 13px; line-height: 1.7; }

  /* ---------- CTA ---------- */
  .cta__inner { padding: 40px 18px 44px; flex-direction: column; align-items: stretch; gap: 22px; }
  .cta h2 { font-size: 22px; margin-bottom: 10px; }
  .cta p { font-size: 13.5px; line-height: 1.75; }
  .cta__actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .cta__actions .btn { width: 100%; height: 46px; }
  .cta__phone { display: flex; align-items: baseline; gap: 10px; }
  .cta__phone b { font-size: 20px; }
  .cta__phone span { font-size: 11.5px; }

  /* ---------- 页脚 ---------- */
  .footer { padding-top: 40px; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 24px 18px; padding-bottom: 28px; }
  .footer__top > div:first-child { grid-column: 1 / -1; }
  .footer__desc { margin-top: 10px; font-size: 12.5px; line-height: 1.8; max-width: none; }
  .footer__col h5 { font-size: 12px; margin-bottom: 10px; }
  .footer__col a, .footer__col p { font-size: 12.5px; margin-bottom: 8px; line-height: 1.6; }
  .footer__bottom { flex-direction: column; gap: 6px; font-size: 11.5px; padding: 16px 0 20px; }

  /* ---------- 内页头 ---------- */
  .page-hero { padding: 34px 0 30px; }
  .page-hero h1 { font-size: 25px; line-height: 1.35; margin: 10px 0 10px; text-wrap: balance; }
  .page-hero p { font-size: 13.5px; line-height: 1.75; }

  /* ---------- 服务详情块 ---------- */
  .svc-block { padding: 36px 0; gap: 18px; }
  .svc-block:first-child { padding-top: 4px; }
  .svc-block__media { aspect-ratio: 16 / 10; border-radius: 14px; }
  .svc-block h3 { font-size: 22px; margin: 8px 0 10px; }
  .svc-block p { font-size: 14px; line-height: 1.8; }
  .check-list { margin-top: 16px; gap: 8px; }
  .check-list li { font-size: 13.5px; line-height: 1.6; }

  /* ---------- 筛选 ---------- */
  .filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    margin-bottom: 22px;
    padding-bottom: 2px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .filter::-webkit-scrollbar { display: none; }
  .chip { flex: 0 0 auto; padding: 7px 14px; font-size: 13px; }

  /* ---------- 关于 ---------- */
  .about-grid { gap: 24px; }
  .about-media { border-radius: 14px; }
  .about-media img { aspect-ratio: 16 / 10; }
  .timeline { margin-top: 22px; }
  .tl-item { grid-template-columns: 54px 1fr; gap: 10px; padding: 14px 0; }
  .tl-item b { font-size: 14px; }
  .tl-item p { font-size: 13.5px; line-height: 1.65; }
  .cert-list { margin-top: 18px; gap: 10px; }
  .cert-list li { font-size: 13.5px; }
  .city-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 20px; }
  .city { padding: 10px 4px; font-size: 12.5px; border-radius: 7px; }

  /* ---------- 联系我们：表单前置 ---------- */
  .contact-grid { display: flex; flex-direction: column; gap: 20px; }
  .contact-grid > div:first-child { display: contents; }
  .contact-list { order: 3; margin-top: 8px !important; }
  .form-card { order: 2; padding: 20px 18px; border-radius: 14px; }
  .contact-item { padding: 14px 0; }
  .contact-item span { font-size: 11.5px; }
  .contact-item b { font-size: 17px; margin-top: 4px; }
  .contact-item p { font-size: 12.5px; line-height: 1.6; }
  .field { margin-bottom: 14px; }
  .field label { font-size: 12.5px; margin-bottom: 6px; }
  .field input, .field select, .field textarea { font-size: 16px; padding: 12px 13px; border-radius: 9px; }
  .field textarea { min-height: 88px; }
  .form-note { font-size: 11.5px; }

  /* ---------- 文章正文 ---------- */
  .article h1 { font-size: 24px; margin-bottom: 18px; }
  .article__meta { font-size: 12px; flex-wrap: wrap; gap: 8px; }
  .article__cover { border-radius: 12px; margin-bottom: 22px; }
  .article__body p { font-size: 15.5px; line-height: 1.9; margin-bottom: 18px; }
  .article__body p:first-child { font-size: 16px; }

  /* ---------- 底部操作条 ---------- */
  .mobile-bar {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    gap: 10px;
    padding: 9px 14px calc(9px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--line);
  }
  .mobile-bar a {
    flex: 1;
    height: 46px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-size: 14.5px;
    font-weight: 500;
  }
  .mobile-bar svg { width: 16px; height: 16px; }
  .mobile-bar__ghost { border: 1px solid var(--line-strong); color: var(--text); background: #fff; }
  .mobile-bar__primary { background: var(--teal); color: #fff; }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 27px; }
  .h2 { font-size: 23px; }
  .hero__cta .btn { font-size: 13px; }
  .clients__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__top { grid-template-columns: 1fr; }
  .metric-row b { font-size: 19px; }
}