:root {
  --green-950: #081f18;
  --green-900: #0c3b2e;
  --green-800: #12523d;
  --green-700: #14693f;
  --green-600: #1b7a4b;
  --green-500: #2e8f5e;
  --green-400: #3e9e6d;
  --green-300: #7fc9a4;
  --green-200: #bce4cf;
  --green-100: #e2f3ea;
  --green-050: #f1f8f3;
  --teal: #1f8a8f;
  --teal-100: #ddf0f0;
  --sand: #f5f3ec;
  --cream: #ffffff;
  --amber: #e8b45f;
  --amber-100: #faeedd;
  --ink: #16261e;
  --ink-soft: #3e5248;
  --muted: #5e7268;
  --line: #e4ede7;
  --white: #ffffff;
  --shadow-sm: 0 2px 12px rgba(12, 59, 46, 0.06);
  --shadow-md: 0 12px 34px rgba(12, 59, 46, 0.1);
  --shadow-lg: 0 28px 70px rgba(12, 59, 46, 0.15);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --container: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: min(var(--container), 92%); margin: 0 auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 6px 24px rgba(12, 59, 46, 0.08);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 36px; width: auto; }
.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name strong { font-size: 18px; color: var(--green-800); letter-spacing: 0.5px; }
.brand-name span { font-size: 11px; color: var(--muted); letter-spacing: 1.5px; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--green-500);
  transition: width 0.25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--green-700); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links .btn, .nav-links .btn:hover { color: #fff; }
.nav-cta { margin-left: 6px; }
.lang-toggle {
  margin-left: 10px;
  min-width: 46px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--green-400);
  background: rgba(255, 255, 255, 0.9);
  color: var(--green-700);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.lang-toggle:hover { background: var(--green-600); color: #fff; transform: translateY(-1px); }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--green-800);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  border: 0;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-primary { background: var(--green-600); color: #fff; box-shadow: 0 8px 20px rgba(42, 122, 78, 0.3); }
.btn-primary { background: var(--green-700); box-shadow: 0 10px 24px rgba(20, 105, 63, 0.32); }
.btn-primary:hover { background: var(--green-800); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(18, 82, 61, 0.4); }
.btn-ghost { background: rgba(255, 255, 255, 0.9); color: var(--green-800); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-light { background: #fff; color: var(--green-800); box-shadow: var(--shadow-md); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; color: var(--green-700); border: 1.5px solid var(--green-400); }
.btn-outline:hover { background: var(--green-100); transform: translateY(-2px); }
.btn .arrow { transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(4px); }
.btn .arrow { font-size: 17px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 76vh;
  padding: 120px 0 140px;
  background:
    radial-gradient(1000px 480px at 88% -10%, rgba(127, 201, 164, 0.4), transparent 62%),
    radial-gradient(760px 420px at -8% 32%, rgba(221, 240, 240, 0.75), transparent 58%),
    linear-gradient(155deg, #f4faf6 0%, #e9f6ee 48%, #e0f1e7 100%);
}
.hero-bg {
  position: absolute;
  right: -70px;
  top: 50%;
  transform: translateY(-50%);
  width: 46vw;
  max-width: 820px;
  opacity: 0.55;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 60%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 60%);
}
.hero::before, .hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.55;
}
.hero::before {
  width: 420px; height: 420px;
  right: -120px; top: -120px;
  background: radial-gradient(circle, rgba(147, 209, 174, 0.55), transparent 70%);
}
.hero::after {
  width: 300px; height: 300px;
  left: -110px; bottom: -90px;
  background: radial-gradient(circle, rgba(58, 168, 160, 0.35), transparent 70%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: block;
  padding: 0;
}
.hero-copy { max-width: 780px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(147, 209, 174, 0.6);
  color: var(--green-700);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.hero h1 {
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.15;
  color: var(--green-900);
  font-weight: 800;
  letter-spacing: 0.5px;
}
.hero h1 em {
  font-style: normal;
  color: var(--green-500);
  position: relative;
}
.hero-sub {
  margin: 24px 0 36px;
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 620px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-metrics {
  display: flex;
  gap: 34px;
  margin-top: 52px;
}
.hero-metrics .metric { display: flex; flex-direction: column; gap: 2px; }
.hero-metrics .metric strong {
  display: block;
  font-size: 32px;
  color: var(--green-800);
  font-weight: 800;
  white-space: nowrap;
}
.hero-metrics .metric span {
  font-size: 14px;
  color: #55695e;
}
.hero-visual {
  position: relative;
}
.hero-visual { display: none; }
.hero-visual .img-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid rgba(255, 255, 255, 0.75);
  transform: rotate(1.2deg);
}
.hero-visual .img-frame img { width: 100%; height: auto; aspect-ratio: 900 / 760; }
.hero-float-card {
  position: absolute;
  right: 40px;
  bottom: 44px;
  left: auto;
  background: rgba(255, 255, 255, 0.94);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  backdrop-filter: blur(6px);
}
.hero-float-card .dot {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--green-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
  font-size: 20px;
}
.hero-float-card strong { font-size: 14px; color: var(--green-900); display: block; }
.hero-float-card span { font-size: 12px; color: var(--muted); }

/* ---------- Section shells ---------- */
.section { padding: 96px 0; }
.section.tint { background: #f5f8f6; }
.section.white { background: #fff; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.eyebrow {
  display: inline-block;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  color: var(--green-900);
  font-weight: 800;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 20px;
}
.section-head h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 58px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--green-700), var(--teal));
}
.section-head p { margin-top: 14px; color: var(--ink-soft); font-size: 16px; }

/* ---------- Board cards ---------- */
.board-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.board-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
}
.board-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.board-card .thumb {
  height: 240px;
  overflow: hidden;
  position: relative;
}
.board-card .thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.board-card:hover .thumb img { transform: scale(1.06); }
.board-card .thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(8, 31, 24, 0.55));
}
.board-card .num {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--green-700);
  font-weight: 800;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
}
.board-card .body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.board-card .body h3 { font-size: 21px; color: var(--green-900); font-weight: 800; margin-bottom: 8px; }
.board-card .body .en { font-size: 12px; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 12px; }
.board-card .body p {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.board-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 22px; }
.board-card .tags { min-height: 60px; align-content: flex-start; }
.board-card .tags span {
  font-size: 12.5px;
  color: #fff;
  background: var(--green-700);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  font-weight: 700;
}
.board-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--green-600);
}
.board-link .arrow { transition: transform 0.25s ease; }
.board-card:hover .board-link .arrow { transform: translateX(5px); }

/* ---------- Feature / split rows ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.reverse .media { order: 2; }
.split .media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 5px solid #fff;
  position: relative;
  background: var(--green-050);
}
.split .media img { width: 100%; height: 380px; object-fit: cover; }
.split .media.contain img { object-fit: contain; }
.split .media.portrait img { height: auto; }
.split .content .eyebrow { margin-bottom: 10px; }
.split .content h2 { font-size: clamp(26px, 3vw, 36px); color: var(--green-900); font-weight: 800; margin-bottom: 16px; }
.split .content p { color: var(--ink-soft); margin-bottom: 16px; }
.check-list { margin-top: 18px; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--ink); }
.check-list .check {
  flex: 0 0 22px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--green-100);
  color: var(--green-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-top: 3px;
}

/* ---------- Feature cards ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-card .icon {
  width: 54px; height: 54px;
  border-radius: 16px;
  background: var(--green-100);
  color: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
}
.feature-card:nth-child(2n) .icon { background: var(--teal-100); color: var(--teal); }
.feature-card h3 { font-size: 18px; color: var(--green-900); font-weight: 700; margin-bottom: 8px; }
.feature-card h4 { font-size: 18px; color: var(--green-900); font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 15px; color: var(--ink-soft); line-height: 1.9; flex: 1; }
.feature-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Cert gallery ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cert-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 14px 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.cert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.cert-card img { height: 210px; object-fit: contain; margin: 0 auto; }
.cert-card figcaption { font-size: 12.5px; color: var(--muted); margin-top: 12px; line-height: 1.5; }

/* ---------- Gallery ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 34px; }
.gallery-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.gallery-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.gallery-card img { width: 100%; height: 200px; object-fit: cover; }
.gallery-card img { filter: brightness(1.12) contrast(1.03); }
.media.soft img { filter: saturate(0.88) brightness(1.12); }
.gallery-card figcaption { padding: 12px 14px; font-size: 14px; font-weight: 600; color: var(--green-900); }

/* ---------- Case covers (two-up large) ---------- */
.case-feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 16px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.step .step-num {
  width: 34px; height: 34px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--green-600);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step .step-icon { font-size: 26px; margin-bottom: 10px; display: block; }
.step h4 { font-size: 15px; color: var(--green-900); font-weight: 700; margin-bottom: 6px; }
.step p { font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.step::after {
  content: "";
  position: absolute;
  right: -13px; top: 50%;
  width: 12px; height: 2px;
  background: var(--green-300);
}
.step:last-child::after { display: none; }

/* ---------- Stats ---------- */
.stats-band {
  background: linear-gradient(120deg, #0c3b2e, #1b7a4b);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.stats-band .stat { text-align: center; }
.stats-band .stat strong {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  margin-bottom: 4px;
}
.stats-band .stat span { font-size: 13.5px; opacity: 0.85; }

/* ---------- Compare table ---------- */
.compare-wrap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td {
  padding: 16px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.compare-table thead th {
  background: var(--green-900);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
}
.compare-table thead th:first-child { background: var(--green-950); }
.compare-table tbody tr:last-child td { border-bottom: 0; }
.compare-table tbody tr:nth-child(even) { background: var(--green-050); }
.compare-table td:first-child { font-weight: 600; color: var(--green-900); }
.compare-table th:first-child, .compare-table td:first-child { min-width: 120px; }
.compare-table .bad { color: #b05c3f; }
.compare-table .good { color: var(--green-600); font-weight: 600; }

/* ---------- Product cards ---------- */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.product-card .thumb { height: 300px; background: var(--green-050); display: flex; align-items: center; justify-content: center; }
.product-card .thumb img { max-height: 100%; object-fit: contain; padding: 24px; }
.product-card .body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.product-card .body h3 { font-size: 21px; color: var(--green-900); font-weight: 800; }
.product-card .body .sub { color: var(--muted); font-size: 13px; margin: 4px 0 16px; }
.spec-list { display: grid; gap: 9px; flex: 1; }
.spec-list li { display: flex; align-items: baseline; gap: 12px; font-size: 13.5px; border-bottom: 1px dashed var(--line); padding-bottom: 8px; }
.spec-list li span:first-child { flex: 0 0 108px; }
.spec-list li span:first-child { color: var(--muted); }
.spec-list li span:last-child { flex: 1; color: var(--ink); font-weight: 600; text-align: left; }

/* ---------- Scenario / case grids ---------- */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scenario {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.scenario:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.scenario .icon { font-size: 28px; margin-bottom: 14px; }
.scenario h4 { color: var(--green-900); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.scenario p { font-size: 14px; color: var(--ink-soft); }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 230px;
  box-shadow: var(--shadow-sm);
}
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.case-card:hover img { transform: scale(1.06); }
.case-card figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 40px 18px 16px;
  background: linear-gradient(transparent, rgba(14, 46, 31, 0.82));
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
}

/* ---------- Timeline ---------- */
.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--green-300), var(--green-100));
}
.timeline li { position: relative; padding: 0 0 34px 22px; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -30px; top: 6px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--green-500);
  box-shadow: var(--shadow-sm);
}
.timeline li:last-child { padding-bottom: 0; }
.timeline h4 { color: var(--green-900); font-size: 17px; font-weight: 700; }
.timeline p { color: var(--ink-soft); font-size: 14px; margin-top: 4px; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(600px 300px at 90% 0%, rgba(147, 209, 174, 0.5), transparent 60%),
    linear-gradient(120deg, var(--green-800), var(--green-600));
  padding: 64px 56px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 10px; }
.cta-band p { opacity: 0.9; font-size: 15px; max-width: 560px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--green-950); color: rgba(255, 255, 255, 0.78); padding: 64px 0 30px; margin-top: 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-grid .brand { margin-bottom: 16px; }
.footer-grid .brand img {
  filter: brightness(0) invert(1);
  opacity: 0.95;
}
.footer-grid .brand-name strong { color: #fff; }
.footer-grid .brand-name span { color: rgba(255, 255, 255, 0.5); }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255, 255, 255, 0.7); font-size: 14px; padding: 5px 0; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--green-300); }
.footer-col p { font-size: 14px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; padding: 6px 0; }
.footer-contact .ic { color: var(--green-300); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 96px;
  background:
    radial-gradient(900px 400px at 90% 0%, rgba(147, 209, 174, 0.55), transparent 60%),
    radial-gradient(700px 360px at 0% 100%, rgba(216, 240, 238, 0.7), transparent 55%),
    linear-gradient(150deg, #f3faf4, #e6f5ec 60%, #ddeef4 130%);
}
.page-hero .crumb { font-size: 14px; color: var(--green-800); font-weight: 600; margin-bottom: 14px; display: inline-flex; gap: 8px; align-items: center; }
.page-hero .crumb a:hover { text-decoration: underline; }
.page-hero h1 { font-size: clamp(32px, 4.4vw, 52px); color: var(--green-900); font-weight: 800; letter-spacing: 1px; line-height: 1.2; }
.page-hero h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin-top: 20px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--green-700), var(--teal));
}
.page-hero p { margin-top: 16px; color: var(--ink-soft); font-size: 17px; max-width: 680px; }
.page-hero .hero-pills { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.page-hero .hero-pills span {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(147, 209, 174, 0.7);
  color: var(--green-700);
  font-size: 14px;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
}

/* ---------- Reveal animation ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.in-view { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: 0.08s; }
.js .reveal[data-delay="2"] { transition-delay: 0.16s; }
.js .reveal[data-delay="3"] { transition-delay: 0.24s; }

@media print {
  .js .reveal { opacity: 1 !important; transform: none !important; }
  .site-header { position: static; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .board-grid, .feature-grid, .scenario-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .case-feature-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .step::after { display: none; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse .media { order: 0; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-bg { width: 62vw; opacity: 0.4; }
}
@media (max-width: 720px) {
  .brand { gap: 8px; }
  .brand img { height: 28px; }
  .brand-name { white-space: nowrap; }
  .brand-name strong { font-size: 16px; }
  .lang-toggle { margin-left: 8px; }
  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--cream);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    align-items: stretch;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 14px 0 0; }
  .nav-toggle { display: flex; }
  .hero { padding: 96px 0 110px; min-height: 0; }
  .hero-inner { padding: 0; }
  .hero-metrics { gap: 16px 30px; flex-wrap: wrap; }
  .board-grid, .feature-grid, .scenario-grid, .case-grid, .product-grid, .feature-grid.cols-4 { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .cert-card img { height: 160px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .gallery-card img { height: 130px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: 1fr 1fr; padding: 36px 24px; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 40px 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; }
  .compare-table { font-size: 13px; }
  .compare-table th, .compare-table td { padding: 12px 14px; }
  .compare-wrap { overflow-x: auto; }
  .compare-table { min-width: 560px; }
  .section { padding: 64px 0; }
  .hero-float-card { position: static; right: auto; bottom: auto; margin-top: 30px; padding: 12px 16px; }
  .hero-bg { right: -130px; width: 115vw; opacity: 0.28; }
}

@media (max-width: 360px) {
  .site-header .brand-name { display: none; }
  .stats-band { padding: 32px 14px; gap: 16px; }
  .stats-band .stat strong { font-size: 19px; }
}

/* ---------- English layout tweaks ---------- */
html[lang="en"] .nav-links { gap: 24px; }
html[lang="en"] .nav-links a { font-size: 14px; }
html[lang="en"] .board-card .body h3 { font-size: 19px; }
html[lang="en"] .board-card .body p { -webkit-line-clamp: unset; }
html[lang="en"] .board-card .tags { min-height: 0; gap: 10px; }
html[lang="en"] .spec-list li { font-size: 12.5px; }
html[lang="en"] .spec-list li { gap: 10px; }
html[lang="en"] .section-head p { font-size: 15.5px; }
html[lang="en"] .hero-sub { font-size: 16px; }
html[lang="en"] .hero h1 { font-size: clamp(32px, 3.9vw, 50px); }

/* ---------- Text balancing ---------- */
.cta-band p,
.site-footer .footer-grid > div:first-child > p,
.step p,
.feature-card p {
  text-wrap: balance;
}
html[lang="en"] .feature-card p { line-height: 1.9; }
html[lang="en"] .compare-table th, html[lang="en"] .compare-table td { font-size: 13.5px; padding: 13px 16px; }
html[lang="en"] .btn { white-space: nowrap; }
html[lang="en"] .step h4 { font-size: 13.5px; }
html[lang="en"] .timeline p { font-size: 13.5px; }