/* ==========================================================================
   鹏程新材 · 官网主样式
   淡蓝基调 / 无外部依赖 / 系统字体 / 移动优先
   ========================================================================== */

:root {
  --bg: #eef7fd;
  --bg-soft: #f6fbff;
  --bg-deep: #e2f1fb;
  --surface: #ffffff;
  --ink: #0b2c44;
  --ink-2: #163f5c;
  --muted: #4f6f88;
  --line: #d7e8f4;
  --line-strong: #c2dcee;
  --primary: #0d6ea8;
  --primary-600: #0b5d90;
  --primary-700: #084a73;
  --sky: #2b9bc4;
  --teal: #14859c;
  --green: #2f8f63;
  --green-soft: #eaf6ef;
  --shadow-sm: 0 1px 2px rgba(11, 44, 68, .04), 0 8px 24px -16px rgba(11, 44, 68, .28);
  --shadow-md: 0 2px 6px rgba(11, 44, 68, .05), 0 24px 48px -28px rgba(9, 64, 100, .35);
  --shadow-lg: 0 40px 80px -40px rgba(8, 58, 92, .45);
  --radius: 18px;
  --radius-lg: 26px;
  --wrap: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei",
          "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system,
          "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg-soft);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
@supports (overflow-x: clip) {
  body { overflow-x: clip; }
}
img, svg, video { max-width: 100%; height: auto; display: block; }
img { background-color: transparent; }
h1, h2, h3, h4, p, ul, ol, dl, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--primary-600); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 3px solid rgba(13, 110, 168, .45); outline-offset: 3px; border-radius: 6px; }
[id] { scroll-margin-top: 92px; }
::selection { background: #b9e0f6; color: #06293f; }

/* ---------- Layout ---------- */
.wrap { width: min(var(--wrap), calc(100% - 40px)); margin-inline: auto; }
.grid > *, .split > *, .table-grid > *, .product-panel > *, .contact-layout > *, .cta-band > * { min-width: 0; }
.split-body, .split-media { min-width: 0; }
.section { padding: clamp(56px, 7vw, 92px) 0; }
.section--tight { padding-top: 0; }
.section--blue { background: linear-gradient(180deg, #eaf5fd 0%, #f4faff 100%); }
.section--deep { background: linear-gradient(160deg, #e3f2fc 0%, #edf7fe 55%, #e7f4fc 100%); }
.section--green { background: linear-gradient(160deg, #eef8f1 0%, #f6fbf7 100%); }
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 200;
  background: var(--primary-700); color: #fff; padding: 10px 18px; border-radius: 999px;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; color: #fff; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; letter-spacing: -.01em; }
h2 { font-size: clamp(1.65rem, 2.9vw, 2.35rem); }
h3 { font-size: clamp(1.1rem, 1.6vw, 1.3rem); }
.lead { color: var(--muted); font-size: clamp(1rem, 1.25vw, 1.1rem); line-height: 1.85; }
small { font-size: .82rem; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 14px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--sky));
}
.section-head { max-width: 760px; margin-bottom: clamp(28px, 4vw, 44px); }
.section-head .lead { margin-top: 14px; }
.section-head--center { text-align: center; margin-inline: auto; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .eyebrow::after {
  content: ""; width: 26px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--sky), var(--primary));
}
.section-head--center .eyebrow::before {
  background: linear-gradient(90deg, var(--primary), var(--sky));
}
.text-gradient {
  background: linear-gradient(115deg, #0a4f7c 10%, #1287b4 55%, #18a0ad 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-foot { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  font-size: .95rem; font-weight: 600; letter-spacing: .01em; line-height: 1.2;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
  white-space: nowrap;
}
.btn svg { flex: 0 0 auto; }
.btn-primary {
  background: linear-gradient(135deg, #1281bb, #0a5b8d);
  color: #fff; box-shadow: 0 12px 26px -14px rgba(9, 91, 141, .9);
}
.btn-primary:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 18px 32px -14px rgba(9, 91, 141, .85); }
.btn-ghost { background: #fff; border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { transform: translateY(-2px); border-color: #9fcbe6; color: var(--primary-700); box-shadow: var(--shadow-sm); }
.btn-light { background: #fff; color: var(--primary-700); }
.btn-light:hover { transform: translateY(-2px); color: var(--primary-700); box-shadow: 0 18px 34px -18px rgba(0, 0, 0, .5); }
.btn-outline-light { border-color: rgba(255, 255, 255, .45); color: #eaf6ff; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 9px 16px; font-size: .86rem; }
.link-arrow { display: inline-flex; align-items: center; gap: 7px; font-weight: 600; font-size: .94rem; }
.link-arrow svg { transition: transform .22s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(194, 220, 238, .55);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 10px 30px -22px rgba(9, 60, 95, .45); background: rgba(255, 255, 255, .95); }
.header-inner { display: flex; align-items: center; gap: 26px; min-height: 74px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 12px; }
.brand img { width: 176px; height: auto; background: transparent; }
.brand-slogan { display: none; padding-left: 13px; border-left: 1px solid #cfe4f3; font-size: .76rem; font-weight: 600; line-height: 1.5; color: #345873; letter-spacing: .02em; white-space: nowrap; }
@media (min-width: 1200px) { .brand-slogan { display: block; } }
.nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav a {
  position: relative; padding: 9px 13px; border-radius: 999px;
  font-size: .94rem; font-weight: 500; color: var(--ink-2); white-space: nowrap;
  transition: background .2s ease, color .2s ease;
}
.nav a:hover { background: #eef7fd; color: var(--primary-700); }
.nav a[aria-current="page"] { color: var(--primary-700); background: #e7f3fc; font-weight: 700; }
.header-cta { margin-left: 6px; }
.nav-toggle {
  display: none; width: 42px; height: 42px; margin-left: auto;
  align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--line-strong); border-radius: 12px; color: var(--ink);
}
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(44px, 6vw, 78px) 0 clamp(30px, 4vw, 46px);
  background:
    radial-gradient(900px 420px at 88% -12%, #ffffff 0%, rgba(255, 255, 255, 0) 62%),
    radial-gradient(700px 460px at 4% 8%, #ffffff 0%, rgba(255, 255, 255, 0) 58%),
    linear-gradient(160deg, #f7fcff 0%, #e9f4fd 46%, #ddeffb 100%);
}
.hero::after {
  content: ""; position: absolute; inset: auto -10% -160px -10%; height: 260px;
  background: radial-gradient(50% 100% at 50% 0%, rgba(255, 255, 255, .85), rgba(255, 255, 255, 0));
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(32px, 5vw, 64px); align-items: center;
}
.hero-copy h1 {
  font-size: clamp(2.25rem, 4.6vw, 3.7rem); line-height: 1.16; letter-spacing: -.02em;
  margin: 6px 0 0;
}
.hero-copy h1 em { font-style: normal; color: var(--primary); }
.hero-copy .lead { margin-top: 20px; max-width: 34em; font-size: clamp(1rem, 1.2vw, 1.08rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 26px; }
.hero-points li {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .88rem; color: var(--ink-2); font-weight: 500;
}
.hero-points svg { color: var(--green); flex: 0 0 auto; }
.hero-visual { position: relative; }
.hero-photo {
  position: relative; margin: 0; border-radius: var(--radius-lg); overflow: hidden;
  border: 7px solid #fff; box-shadow: var(--shadow-lg);
  aspect-ratio: 5 / 4; background: #dceefa;
  transform: rotate(.6deg);
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 52% 58%; }
.hero-photo figcaption {
  position: absolute; left: 16px; bottom: 14px; z-index: 2;
  background: rgba(8, 42, 64, .62); color: #eaf6ff;
  font-size: .74rem; padding: 5px 11px; border-radius: 999px; letter-spacing: .04em;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.float-card {
  position: absolute; z-index: 3; display: flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, .93); border: 1px solid rgba(194, 220, 238, .9);
  border-radius: 14px; padding: 10px 15px; box-shadow: 0 18px 34px -22px rgba(8, 58, 92, .55);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.float-card strong { font-size: 1.32rem; line-height: 1; color: var(--primary-700); letter-spacing: -.02em; }
.float-card span { font-size: .76rem; color: var(--muted); line-height: 1.35; }
.float-card.fc-1 { left: -18px; top: 46%; }
.float-card.fc-2 { right: -10px; bottom: 34px; }
.float-card.fc-3 { left: 22px; bottom: -18px; }
.hero-note {
  position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 8px 22px;
  margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(173, 209, 233, .55);
  font-size: .82rem; color: var(--ink-2);
}
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--sky); }

/* ---------- Stats ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 22px;
  box-shadow: var(--shadow-md); padding: 8px 6px; margin-top: clamp(28px, 4vw, 40px);
}
.stat { padding: 20px 22px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat strong {
  display: block; font-size: clamp(1.7rem, 2.6vw, 2.15rem); line-height: 1.1;
  letter-spacing: -.02em; color: var(--primary-700);
}
.stat strong small { font-size: .52em; font-weight: 700; margin-left: 2px; color: var(--sky); }
.stat span { display: block; margin-top: 6px; font-size: .84rem; color: var(--muted); }

/* ---------- Page hero ---------- */
.page-hero {
  position: relative; overflow: hidden;
  padding: clamp(38px, 5vw, 64px) 0 clamp(30px, 4vw, 48px);
  background:
    radial-gradient(760px 320px at 84% -30%, #fff 0%, rgba(255,255,255,0) 70%),
    linear-gradient(160deg, #f7fcff 0%, #e8f4fd 60%, #e1f0fb 100%);
  border-bottom: 1px solid rgba(194, 220, 238, .5);
}
.page-hero--image { background-position: center; background-size: cover; }
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin-top: 6px; }
.page-hero .lead { margin-top: 16px; max-width: 46em; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .8rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb [aria-current="page"] { color: var(--ink-2); font-weight: 600; }
.breadcrumb .sep { opacity: .55; }
.page-hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }

/* ---------- Chips / badges ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px; font-size: .78rem; font-weight: 500;
  background: #eef7fd; color: #1c5b80; border: 1px solid #d9ecf8; white-space: nowrap;
}
.chip--green { background: var(--green-soft); color: #256f4c; border-color: #cfe9d8; }
.chip--white { background: rgba(255, 255, 255, .14); color: #eaf6ff; border-color: rgba(255, 255, 255, .28); }
.badge-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 14px; font-size: .82rem; font-weight: 600; color: var(--ink-2);
  box-shadow: var(--shadow-sm);
}
.badge svg { color: var(--primary); }

/* ---------- Cards & grids ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.card:hover { transform: translateY(-4px); border-color: #b9d9ee; box-shadow: 0 26px 50px -34px rgba(9, 64, 100, .45); }
.card-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #eaf4fb; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .card-media img { transform: scale(1.035); }
.card-body { display: flex; flex-direction: column; gap: 10px; padding: 20px 22px 22px; flex: 1; }
.card-body h3 { font-size: 1.12rem; }
.card-body p { color: var(--muted); font-size: .9rem; line-height: 1.7; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
.card-link { margin-top: 8px; }

/* Feature card (icon) */
.feature {
  display: flex; flex-direction: column; gap: 12px;
  padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.feature:hover { transform: translateY(-3px); border-color: #bfdcef; box-shadow: var(--shadow-sm); }
.feature-icon {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(140deg, #e5f3fc, #d3ebf9); color: var(--primary-700);
}
.feature-icon--green { background: linear-gradient(140deg, #e8f6ed, #d5eede); color: var(--green); }
.feature h3 { font-size: 1.04rem; }
.feature p { color: var(--muted); font-size: .88rem; line-height: 1.72; }
.feature ul { display: grid; gap: 6px; margin-top: 2px; }
.feature li { position: relative; padding-left: 16px; font-size: .86rem; color: var(--ink-2); }
.feature li::before {
  content: ""; position: absolute; left: 2px; top: .65em; width: 5px; height: 5px;
  border-radius: 50%; background: var(--sky);
}

/* Split */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 60px); align-items: center; }
.split--reverse .split-media { order: 2; }
.split-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4 / 3; }
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-media--wide { aspect-ratio: 16 / 10; }
.split-body h2 { margin-bottom: 16px; }
.split-body .lead { margin-bottom: 18px; }
.checklist { display: grid; gap: 12px; margin: 20px 0 26px; }
.checklist li { display: grid; grid-template-columns: 24px 1fr; gap: 10px; font-size: .93rem; color: var(--ink-2); }
.checklist li svg { margin-top: 3px; color: var(--green); }
.checklist b { color: var(--ink); font-weight: 600; }

/* ---------- Product filter ---------- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px;
  padding: 8px; background: #fff; border: 1px solid var(--line); border-radius: 999px;
  width: fit-content; max-width: 100%;
}
.filter-btn {
  border: 0; background: transparent; padding: 9px 16px; border-radius: 999px;
  font-size: .86rem; font-weight: 600; color: var(--muted); transition: background .2s ease, color .2s ease;
}
.filter-btn:hover { background: #eef7fd; color: var(--primary-700); }
.filter-btn[aria-pressed="true"] { background: linear-gradient(135deg, #1281bb, #0a5b8d); color: #fff; }
.product-group { scroll-margin-top: 100px; }
.product-group + .product-group { margin-top: clamp(36px, 5vw, 56px); }
.product-group-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 18px; margin-bottom: 18px; }
.product-group-head h2 { font-size: clamp(1.35rem, 2.2vw, 1.75rem); }
.product-group-head p { color: var(--muted); font-size: .9rem; }
.product-panel {
  display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm);
}
.product-panel-media { position: relative; min-height: 320px; background: #eaf4fb; }
.product-panel-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.product-panel-body { padding: clamp(22px, 3vw, 34px); }
.product-panel-body h3 { font-size: 1.05rem; margin: 18px 0 8px; }
.product-panel-body h3:first-child { margin-top: 0; }
.spec-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 18px; margin: 12px 0 0; }
.spec-list div { display: flex; gap: 8px; font-size: .86rem; color: var(--ink-2); }
.spec-list dt { color: var(--muted); flex: 0 0 auto; }
.spec-list dd { margin: 0; font-weight: 500; }
.tick-list { display: grid; gap: 7px; margin: 10px 0 0; }
.tick-list li { position: relative; padding-left: 18px; font-size: .88rem; color: var(--ink-2); }
.tick-list li::before {
  content: ""; position: absolute; left: 2px; top: .62em; width: 7px; height: 7px;
  border: 1.5px solid var(--sky); border-radius: 2px; transform: rotate(45deg);
}
.product-panel .chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }

/* ---------- Tables ---------- */
.table-wrap {
  overflow-x: auto; background: #fff; border: 1px solid var(--line);
  border-radius: 16px; box-shadow: var(--shadow-sm); -webkit-overflow-scrolling: touch;
  max-width: 100%;
}
table.data { min-width: 520px; font-size: .88rem; }
table.data caption { text-align: left; padding: 16px 18px 0; font-weight: 700; color: var(--ink); font-size: .95rem; }
table.data th, table.data td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #e8f2f9; vertical-align: top; }
table.data thead th { background: #eef7fd; color: var(--primary-700); font-weight: 700; font-size: .82rem; letter-spacing: .02em; white-space: nowrap; }
table.data tbody tr:nth-child(even) { background: #fbfdff; }
table.data tbody tr:last-child td { border-bottom: 0; }
table.data td strong { color: var(--ink); }
.table-note { margin-top: 10px; font-size: .78rem; color: var(--muted); }
.table-hint { display: none; margin-top: 6px; font-size: .76rem; color: var(--primary); }
@media (max-width: 640px) { .table-hint { display: block; } }
.table-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }

/* ---------- Spec / scheme cards ---------- */
.scheme-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.scheme {
  position: relative; display: flex; flex-direction: column; gap: 10px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.scheme:hover { transform: translateY(-3px); border-color: #b6d8ee; box-shadow: var(--shadow-sm); }
.scheme--featured { border-color: #a9d2ea; box-shadow: 0 22px 40px -32px rgba(9, 64, 100, .45); }
.scheme--featured::before {
  content: "推荐"; position: absolute; top: -11px; right: 18px;
  background: linear-gradient(135deg, #1281bb, #0a5b8d); color: #fff;
  font-size: .68rem; font-weight: 700; letter-spacing: .08em; padding: 3px 10px; border-radius: 999px;
}
.scheme .num {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: #e7f3fc; color: var(--primary-700); font-weight: 800; font-size: .95rem;
}
.scheme h3 { font-size: 1.05rem; }
.scheme p { font-size: .87rem; color: var(--muted); line-height: 1.7; }
.scheme dl { display: grid; gap: 6px; margin-top: auto; padding-top: 10px; border-top: 1px dashed var(--line); }
.scheme dl div { display: flex; justify-content: space-between; gap: 10px; font-size: .82rem; }
.scheme dt { color: var(--muted); }
.scheme dd { margin: 0; font-weight: 600; color: var(--ink); text-align: right; }

/* ---------- Timeline ---------- */
.timeline { position: relative; display: grid; gap: 0; margin-top: 10px; }
.timeline::before {
  content: ""; position: absolute; left: 86px; top: 12px; bottom: 12px; width: 2px;
  background: linear-gradient(180deg, #b9dcf1, #dcecf8); border-radius: 2px;
}
.timeline-item { position: relative; display: grid; grid-template-columns: 86px 1fr; gap: 26px; padding: 14px 0; }
.timeline-year { text-align: right; padding-right: 16px; font-weight: 800; color: var(--primary-700); font-size: .95rem; padding-top: 2px; letter-spacing: .01em; }
.timeline-item::after {
  content: ""; position: absolute; left: 80px; top: 22px; width: 10px; height: 10px;
  border-radius: 50%; background: #fff; border: 3px solid var(--primary); box-shadow: 0 0 0 4px #eaf5fd;
}
.timeline-body { padding: 0 0 4px 12px; }
.timeline-body h3 { font-size: 1rem; margin-bottom: 4px; }
.timeline-body p { color: var(--muted); font-size: .88rem; }

/* ---------- Gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.gallery-item {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden; padding: 0; text-align: left;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.gallery-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); border-color: #b9d9ee; }
.gallery-thumb { display: block; padding: 0; background: #f7fbfe; }
.gallery-thumb img { width: 100%; height: 252px; object-fit: cover; object-position: top center; }
.gallery-cap { display: block; padding: 0 14px 15px; font-size: .82rem; font-weight: 600; color: var(--ink-2); line-height: 1.5; }
.gallery-cap small { display: block; font-weight: 400; color: var(--muted); margin-top: 2px; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 10px; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 0 20px; transition: border-color .2s ease, box-shadow .2s ease;
}
.faq details[open] { border-color: #b9d9ee; box-shadow: var(--shadow-sm); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 17px 0; cursor: pointer; font-weight: 600; font-size: .95rem; color: var(--ink);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center; background: #eef7fd; color: var(--primary);
  font-weight: 400; font-size: 1.15rem; line-height: 1; transition: transform .25s ease, background .25s ease;
}
.faq details[open] summary::after { content: "−"; transform: rotate(180deg); background: #dcefff; }
.faq .faq-a { padding: 0 0 18px; color: var(--muted); font-size: .9rem; line-height: 1.8; }
.faq .faq-a p + p { margin-top: 8px; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(115deg, #082f4b 0%, #0a4f78 46%, #0d7595 100%);
  border-radius: var(--radius-lg); padding: clamp(32px, 5vw, 54px);
  color: #eaf6ff; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  gap: 28px; align-items: center; box-shadow: var(--shadow-lg);
}
.cta-band::before {
  content: ""; position: absolute; right: -120px; top: -140px; width: 420px; height: 420px;
  border-radius: 50%; background: radial-gradient(circle, rgba(88, 190, 226, .35), transparent 68%);
}
.cta-band::after {
  content: ""; position: absolute; left: 10%; bottom: -180px; width: 520px; height: 320px;
  border-radius: 50%; background: radial-gradient(circle, rgba(46, 160, 200, .22), transparent 70%);
}
.cta-band > * { position: relative; z-index: 2; }
.cta-band h2 { color: #fff; font-size: clamp(1.45rem, 2.4vw, 2rem); }
.cta-band p { color: #c4e2f2; margin-top: 10px; font-size: .94rem; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

/* ---------- Clients ---------- */
.client-strip { display: flex; flex-wrap: wrap; gap: 8px; }
.client-strip .chip { background: #fff; }
.client-figure { margin-top: 26px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 16px; }
.client-figure img { width: 100%; height: auto; }
.client-figure figcaption { margin-top: 8px; font-size: .75rem; color: var(--muted); text-align: center; }

/* ---------- Media / video ---------- */
.media-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: #0a2b41; box-shadow: var(--shadow-md); }
.media-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; opacity: .92; }
.media-card video { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; background: #061e2e; }
.play-btn {
  position: absolute; inset: 0; display: grid; place-items: center;
  border: 0; background: linear-gradient(180deg, rgba(4, 30, 46, .05), rgba(4, 30, 46, .45));
  color: #fff; transition: background .25s ease;
}
.play-btn:hover { background: linear-gradient(180deg, rgba(4, 30, 46, .1), rgba(4, 30, 46, .55)); }
.play-btn span {
  display: grid; place-items: center; width: 74px; height: 74px; border-radius: 50%;
  background: rgba(255, 255, 255, .94); color: var(--primary-700);
  box-shadow: 0 18px 40px -16px rgba(0, 0, 0, .6); transition: transform .25s ease;
}
.play-btn:hover span { transform: scale(1.06); }
.play-btn em { position: absolute; bottom: 18px; left: 20px; font-style: normal; font-size: .8rem; color: #e9f6ff; }
.download-grid { display: grid; gap: 12px; }
.download {
  display: grid; grid-template-columns: 42px 1fr auto; gap: 14px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.download:hover { border-color: #b9d9ee; box-shadow: var(--shadow-sm); transform: translateY(-2px); color: var(--ink); }
.download-icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: #eef7fd; color: var(--primary); }
.download b { display: block; font-size: .9rem; color: var(--ink); }
.download small { color: var(--muted); font-size: .76rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.contact-card h3 { font-size: .95rem; color: var(--muted); font-weight: 600; margin-bottom: 8px; }
.contact-card p, .contact-card a { font-size: 1rem; color: var(--ink); font-weight: 600; line-height: 1.6; word-break: break-word; }
.contact-card a:hover { color: var(--primary); }
.contact-card small { display: block; margin-top: 6px; color: var(--muted); font-weight: 400; }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 44px); align-items: start; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(22px, 3vw, 34px); box-shadow: var(--shadow-sm); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field { display: grid; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink-2); }
.field label .req { color: #c24b4b; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 10px;
  background: #fbfdff; font-size: .9rem; transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: #7ab9de; background: #fff; box-shadow: 0 0 0 4px rgba(43, 155, 196, .12);
}
.field textarea { min-height: 120px; resize: vertical; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 18px; }
.form-note { font-size: .76rem; color: var(--muted); }
.map-card {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background:
    radial-gradient(circle at 20% 30%, #ffffff 0%, transparent 55%),
    linear-gradient(150deg, #e8f4fc, #dceefa);
  min-height: 300px; display: grid; place-items: center; padding: 28px; text-align: center;
}
.map-card::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 42px 42px;
}
.map-card > * { position: relative; z-index: 2; }
.map-pin { width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; background: #fff; color: var(--primary); box-shadow: var(--shadow-sm); margin: 0 auto 12px; }
.map-card h3 { font-size: 1.05rem; }
.map-card p { color: var(--muted); font-size: .88rem; margin-top: 6px; }
.map-links { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 18px; }
.info-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.info-table th, .info-table td { padding: 12px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.info-table th { width: 34%; font-weight: 500; color: var(--muted); }
.info-table td { font-weight: 600; color: var(--ink); }
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: 0; }

/* ---------- Footer ---------- */
.site-footer { background: #07283d; color: #a9c6da; margin-top: clamp(50px, 7vw, 90px); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 36px; padding: clamp(38px, 5vw, 58px) 0 34px; }
.site-footer h3 { color: #fff; font-size: .92rem; margin-bottom: 14px; letter-spacing: .04em; }
.site-footer p { font-size: .84rem; line-height: 1.8; color: #93b3c9; }
.footer-brand .brand-tile { display: inline-flex; background: #fff; border-radius: 12px; padding: 10px 16px; margin-bottom: 16px; box-shadow: 0 14px 28px -20px rgba(0, 0, 0, .75); }
.footer-brand .brand-tile img { width: 156px; height: auto; background: transparent; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { color: #a9c6da; font-size: .86rem; }
.footer-links a:hover { color: #fff; }
.footer-contact { display: grid; gap: 9px; font-size: .84rem; }
.footer-contact span { display: grid; grid-template-columns: 18px 1fr; gap: 8px; color: #93b3c9; }
.footer-contact svg { margin-top: 3px; color: #5fa9cc; }
.footer-contact a { color: #cfe7f5; }
.footer-contacts { margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(255, 255, 255, .1); display: grid; gap: 5px; }
.footer-contacts-title { font-size: .7rem; letter-spacing: .1em; color: #6f94ac; }
.footer-contacts ul { display: grid; gap: 5px; margin-top: 2px; }
.footer-contacts li { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; font-size: .84rem; }
.footer-contacts li span { color: #a9c6da; }
.footer-contacts li a { color: #e2f1fa; font-variant-numeric: tabular-nums; }
.footer-contacts li a:hover { color: #fff; }
.contact-card--person h3 { color: var(--ink); font-size: 1.05rem; }
.footer-qr { display: flex; gap: 14px; align-items: center; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .1); }
.footer-qr img { width: 78px; height: 78px; border-radius: 8px; background: #fff; padding: 4px; }
.footer-qr small { display: block; font-size: .74rem; color: #7fa2ba; line-height: 1.5; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; align-items: center;
  padding: 16px 0 22px; border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: .76rem; color: #7396ad;
}
.footer-bottom a { color: #93b3c9; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; }
.footer-legal a { color: #93b3c9; }
.footer-legal a:hover { color: #fff; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 20px; bottom: 22px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, .94); color: var(--primary-700);
  display: grid; place-items: center; box-shadow: var(--shadow-sm);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: #fff; }

/* ---------- Lightbox ---------- */
dialog.lightbox {
  width: min(920px, calc(100vw - 32px)); max-height: 92vh; padding: 0;
  border: 0; border-radius: 18px; background: #fff; color: var(--ink);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .55);
}
dialog.lightbox::backdrop { background: rgba(4, 22, 36, .66); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }
.lightbox-body { position: relative; display: flex; flex-direction: column; }
.lightbox-img { background: #f5fafe; padding: 18px; }
.lightbox-img img { width: 100%; max-height: 68vh; object-fit: contain; }
.lightbox-cap { padding: 12px 20px 18px; font-size: .86rem; color: var(--muted); }
.lightbox-close {
  position: absolute; top: 10px; right: 10px; z-index: 3;
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line);
  background: rgba(255, 255, 255, .95); color: var(--ink); display: grid; place-items: center;
}
.lightbox-close:hover { background: #eef7fd; }

/* ---------- Reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .65s cubic-bezier(.2, .7, .2, 1), transform .65s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: .07s; }
.js .reveal[data-delay="2"] { transition-delay: .14s; }
.js .reveal[data-delay="3"] { transition-delay: .21s; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .card, .feature, .scheme, .gallery-item, .btn { transition: none; }
}

/* ---------- 404 ---------- */
.error-page { min-height: 100vh; display: flex; flex-direction: column; }
.error-page main { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.error-page .site-footer { margin-top: 0; }

/* ---------- Helpers ---------- */
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
[hidden] { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .header-inner { gap: 16px; }
  .nav a { padding: 9px 10px; font-size: .9rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 660px; width: 100%; margin-inline: auto; }
  .hero-photo { transform: none; }
  .hero-copy .lead { max-width: none; }
  .float-card.fc-1 { left: 8px; }
  .float-card.fc-2 { right: 8px; }
  .cta-band { grid-template-columns: 1fr; }
  .cta-actions { justify-content: flex-start; }
}

@media (max-width: 960px) {
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    display: none; flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px; box-shadow: 0 26px 40px -30px rgba(9, 60, 95, .4);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 14px; border-radius: 10px; font-size: .96rem; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split--reverse .split-media { order: 0; }
  .product-panel { grid-template-columns: 1fr; }
  .product-panel-media { min-height: 0; aspect-ratio: 16 / 9; }
  .product-panel-media img { position: static; }
  .scheme-grid { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .table-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .filter-bar { border-radius: 18px; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .wrap { width: calc(100% - 32px); }
  .brand img { width: 142px; }
  .header-inner { min-height: 64px; }
  .hero { padding-top: 30px; }
  .hero-copy h1 { font-size: clamp(2rem, 9vw, 2.6rem); }
  .hero-actions .btn { flex: 1 1 100%; }
  .float-card.fc-1 { top: 12px; left: 6px; padding: 8px 12px; }
  .float-card.fc-2 { bottom: 18px; right: 6px; padding: 8px 12px; }
  .hero-photo { aspect-ratio: 4 / 3; border-width: 5px; }
  .hero-photo figcaption { max-width: 62%; left: 12px; bottom: 10px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .scheme-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .gallery-thumb img { height: 190px; }
  .stats { border-radius: 18px; }
  .stat { padding: 16px; }
  .timeline::before { left: 12px; }
  .timeline-item { grid-template-columns: 1fr; gap: 2px; padding-left: 34px; }
  .timeline-year { text-align: left; padding-right: 0; }
  .timeline-item::after { left: 6px; top: 20px; }
  .timeline-body { padding-left: 0; }
  .spec-list { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-band { padding: 28px 22px; border-radius: 20px; }
  .cta-actions .btn { flex: 1 1 100%; }
  .to-top { right: 14px; bottom: 14px; }
  .section-head--center { text-align: left; }
  .section-head--center .eyebrow { justify-content: flex-start; }
}


/* ==========================================================================
   Motion system — 复合软包装 / 覆膜质感转场
   ========================================================================== */
:root { --ease-film: cubic-bezier(.22, 1, .36, 1); --ease-sheet: cubic-bezier(.76, 0, .24, 1); }

/* 页面转场：三层膜材依次覆盖 / 揭起 */
.pt { position: fixed; inset: 0; z-index: 1200; visibility: hidden; pointer-events: none; overflow: hidden; }
.pt__layer { position: absolute; top: -28px; right: 0; bottom: 0; left: 0; transform: translate3d(0, 104%, 0); border-radius: 30px 30px 0 0; will-change: transform; }
.pt__layer::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 34%, rgba(255, 255, 255, .16) 48%, transparent 62%); }
.pt__layer--1 { background: linear-gradient(165deg, #f4fbff 0%, #d6ecfa 100%); }
.pt__layer--2 { background: linear-gradient(165deg, #1a8fb8 0%, #0a638c 100%); }
.pt__layer--3 { background: linear-gradient(165deg, #0b3d5b 0%, #07283d 100%); }
html.is-leaving .pt, html.is-entering .pt { visibility: visible; }
html.is-leaving .pt { pointer-events: auto; }
html.is-leaving .pt__layer { animation: ptSheetIn .5s var(--ease-sheet) both; }
html.is-leaving .pt__layer--2 { animation-delay: .05s; }
html.is-leaving .pt__layer--3 { animation-delay: .1s; }
html.is-entering .pt__layer { animation: ptSheetOut .6s var(--ease-sheet) both; }
html.is-entering .pt__layer--3 { animation-delay: 0s; }
html.is-entering .pt__layer--2 { animation-delay: .07s; }
html.is-entering .pt__layer--1 { animation-delay: .14s; }
@keyframes ptSheetIn { from { transform: translate3d(0, 104%, 0); } to { transform: translate3d(0, 0, 0); } }
@keyframes ptSheetOut { from { transform: translate3d(0, 0, 0); } to { transform: translate3d(0, -104%, 0); } }

html.is-entering main { animation: pageEnter .6s var(--ease-film) both; animation-delay: .16s; }
@keyframes pageEnter { from { opacity: 0; transform: translate3d(0, 10px, 0); } to { opacity: 1; transform: none; } }

/* 阅读进度条 */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 1100; pointer-events: none; background: rgba(13, 110, 168, .06); }
.scroll-progress span { display: block; height: 100%; transform: scaleX(0); transform-origin: 0 50%; background: linear-gradient(90deg, #0d6ea8, #2b9bc4 55%, #3f9d6b); transition: transform .12s linear; }

/* 首屏 / 内页标题入场 */
@media (prefers-reduced-motion: no-preference) {
  .hero .eyebrow { animation: riseIn .7s .06s var(--ease-film) both; }
  .hero h1 { animation: riseIn .85s .12s var(--ease-film) both; }
  .hero .lead { animation: riseIn .85s .2s var(--ease-film) both; }
  .hero-actions { animation: riseIn .8s .28s var(--ease-film) both; }
  .hero-points { animation: riseIn .8s .34s var(--ease-film) both; }
  .hero-visual { animation: visualIn .95s .18s var(--ease-film) both; }
  .hero-note { animation: fadeIn .8s .52s ease both; }
  .page-hero h1 { animation: riseIn .8s .06s var(--ease-film) both; }
  .page-hero .lead { animation: riseIn .8s .14s var(--ease-film) both; }
  .page-hero-tags { animation: fadeIn .7s .22s ease both; }
}
@keyframes riseIn { from { opacity: 0; transform: translate3d(0, 24px, 0); } to { opacity: 1; transform: none; } }
@keyframes visualIn { from { opacity: 0; transform: translate3d(0, 28px, 0) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* 滚动出现：更柔和的位移 + 图片“覆膜展开” */
.js .reveal { opacity: 0; transform: translate3d(0, 22px, 0); transition: opacity .7s var(--ease-film), transform .8s var(--ease-film); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .reveal[data-reveal="left"] { transform: translate3d(-26px, 0, 0); }
.js .reveal[data-reveal="right"] { transform: translate3d(26px, 0, 0); }
.js .reveal[data-reveal="zoom"] { transform: scale(.965); }

.js .card.reveal .card-media img,
.js .reveal .split-media img,
.js .split-media.reveal img,
.js .gallery-item.reveal .gallery-thumb img,
.js .client-figure.reveal img,
.js .media-card.reveal img {
  clip-path: inset(0 0 0 100%);
  transition: clip-path .95s var(--ease-sheet), transform .6s ease;
}
.js .card.reveal.is-in .card-media img,
.js .reveal.is-in .split-media img,
.js .split-media.reveal.is-in img,
.js .gallery-item.reveal.is-in .gallery-thumb img,
.js .client-figure.reveal.is-in img,
.js .media-card.reveal.is-in img {
  clip-path: inset(0 0 0 0);
}

/* 覆膜高光与按钮流光 */
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .card-media::after { content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(115deg, transparent 32%, rgba(255, 255, 255, .34) 47%, transparent 62%); transform: translate3d(-130%, 0, 0); transition: transform .9s var(--ease-film); }
  .card:hover .card-media::after { transform: translate3d(130%, 0, 0); }
  .btn-primary { position: relative; overflow: hidden; }
  .btn-primary::after { content: ""; position: absolute; top: -40%; bottom: -40%; left: 0; width: 40%; background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .35), transparent); transform: translate3d(-150%, 0, 0) skewX(-18deg); transition: transform .7s var(--ease-film); pointer-events: none; }
  .btn-primary:hover::after { transform: translate3d(450%, 0, 0) skewX(-18deg); }
}
@media (min-width: 961px) and (hover: hover) {
  .nav a::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 5px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--primary), var(--sky)); transform: scaleX(0); transform-origin: left center; transition: transform .35s var(--ease-film); }
  .nav a:hover::after { transform: scaleX(1); }
  .nav a[aria-current="page"]::after { display: none; }
}

/* 产品筛选 / 灯箱 / FAQ */
.filter-in { animation: filterIn .5s var(--ease-film) both; }
@keyframes filterIn { from { opacity: 0; transform: translate3d(0, 14px, 0) scale(.996); } to { opacity: 1; transform: none; } }
dialog.lightbox[open] { animation: dialogIn .4s var(--ease-film) both; }
dialog.lightbox[open]::backdrop { animation: fadeIn .3s ease both; }
@keyframes dialogIn { from { opacity: 0; transform: translate3d(0, 14px, 0) scale(.985); } to { opacity: 1; transform: none; } }

@media (max-width: 960px) and (prefers-reduced-motion: no-preference) {
  .nav.is-open { animation: menuIn .28s var(--ease-film) both; }
}
@keyframes menuIn { from { transform: translate3d(0, -8px, 0); } to { transform: none; } }
details[open] .faq-a { animation: riseIn .4s var(--ease-film) both; }

.hero-photo img { will-change: transform; }

/* 降级与打印 */
html.no-motion .reveal,
html.no-motion .reveal .card-media img,
html.no-motion .reveal .split-media img,
html.no-motion .gallery-thumb img,
html.no-motion .client-figure img,
html.no-motion .media-card img {
  opacity: 1 !important; transform: none !important; clip-path: none !important; transition: none !important;
}
@media (prefers-reduced-motion: reduce) {
  .pt, .scroll-progress { display: none !important; }
  .js .reveal, .js .reveal.is-in, .js .reveal .split-media img, .js .reveal .card-media img, .js .reveal .gallery-thumb img, .js .client-figure.reveal img, .js .media-card.reveal img {
    opacity: 1 !important; transform: none !important; clip-path: none !important; transition: none !important;
  }
  .hero .eyebrow, .hero h1, .hero .lead, .hero-actions, .hero-points, .hero-visual, .hero-note,
  .page-hero h1, .page-hero .lead, .page-hero-tags { animation: none !important; opacity: 1 !important; transform: none !important; }
  .filter-in, dialog.lightbox[open], details[open] .faq-a { animation: none !important; }
}
@media print {
  .pt, .scroll-progress { display: none !important; }
  .js .reveal, .js .reveal .card-media img, .js .reveal .split-media img, .js .reveal .gallery-thumb img, .js .client-figure.reveal img, .js .media-card.reveal img { opacity: 1 !important; transform: none !important; clip-path: none !important; }
}


/* 手卷袋正确用法演示 */
.howto { display: grid; gap: 0; margin: 20px 0 24px; border-top: 1px solid var(--line); }
.howto li { display: grid; grid-template-columns: 86px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.howto b { color: var(--primary-700); font-size: .92rem; font-weight: 700; }
.howto span { color: var(--muted); font-size: .9rem; line-height: 1.7; }
.media-card--portrait { max-width: 320px; margin-inline: auto; }
.media-card--portrait img, .media-card--portrait video { aspect-ratio: 272 / 480; object-fit: cover; }
.media-card--portrait .play-btn em { left: 14px; right: 14px; bottom: 14px; }


/* 语言切换 */
.lang-switch { position: relative; flex: 0 0 auto; margin-left: 2px; }
.lang-switch summary { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 11px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--ink-soft); font-size: .78rem; font-weight: 600; line-height: 1; cursor: pointer; list-style: none; white-space: nowrap; }
.lang-switch summary::-webkit-details-marker { display: none; }
.lang-switch summary::marker { content: ""; }
.lang-switch summary:hover { border-color: var(--primary-300); color: var(--primary-700); }
.lang-switch[open] summary { border-color: var(--primary-400); color: var(--primary-700); box-shadow: 0 0 0 3px rgba(13, 110, 168, .06); }
.lang-switch summary svg:last-child { transition: transform .25s var(--ease-film); }
.lang-switch[open] summary svg:last-child { transform: rotate(180deg); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); z-index: 140; min-width: 144px; padding: 6px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 18px 40px rgba(8, 52, 79, .16); }
.lang-menu a { display: flex; justify-content: space-between; gap: 12px; padding: 8px 10px; border-radius: 8px; color: var(--ink); font-size: .82rem; }
.lang-menu a:hover { background: var(--sky-50); color: var(--primary-700); }
.lang-menu a[aria-current="true"] { background: var(--sky-50); color: var(--primary-700); font-weight: 700; }
.lang-mobile { display: none; }
@media (min-width: 961px) and (max-width: 1120px) {
  .header-inner { gap: 12px; }
  .nav { gap: 0; }
  .nav a { padding: 8px 9px; font-size: .84rem; }
  .lang-switch summary { padding: 0 9px; }
}
@media (max-width: 960px) {
  .lang-switch { display: none; }
  .lang-mobile { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 10px; padding-top: 12px; border-top: 1px solid var(--line); }
  .lang-mobile a { display: flex; justify-content: center; padding: 9px 8px; border: 1px solid var(--line); border-radius: 9px; font-size: .82rem; color: var(--ink-soft); background: #fff; }
  .lang-mobile a[aria-current="true"] { border-color: var(--primary-300); color: var(--primary-700); background: var(--sky-50); font-weight: 700; }
  .lang-mobile a:last-child { grid-column: 1 / -1; }
}


/* 6 项数据（三语关于页） */
.stats.stats--six { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stats.stats--six .stat strong { font-size: clamp(1.35rem, 2.2vw, 1.9rem); }
@media (max-width: 720px) {
  .stats.stats--six { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 420px) {
  .stats.stats--six { grid-template-columns: 1fr; }
}


/* 俄文长词不撑破参数表 */
.spec-list dd { overflow-wrap: anywhere; }

/* ---------- Print ---------- */
@media print {
  .site-header, .to-top, .cta-band, .site-footer, .filter-bar { display: none !important; }
  body { background: #fff; }
  .card, .product-panel, .table-wrap { box-shadow: none; }
  a { color: #000; }
}