/* =============================================================
   思诺新材 SINO — 企业官网样式
   设计语言：深蓝科技 + 石墨绿点缀 · 六边形晶格母题 · 产品摄影主导
   ============================================================= */

:root {
  --ink: #101C33;
  --ink-2: #3D4A63;
  --muted: #6B7793;
  --brand-900: #081F4D;
  --brand-800: #0A2A66;
  --brand-700: #0E4DAE;
  --brand-600: #1259C3;
  --brand-500: #1565D8;
  --brand-100: #DCE8FA;
  --brand-50: #EFF4FC;
  --green: #1FA566;
  --green-600: #178A55;
  --bg: #F5F7FA;
  --surface: #FFFFFF;
  --line: #E4E9F2;
  --shadow-sm: 0 2px 10px rgba(16, 28, 51, .06);
  --shadow-md: 0 10px 30px rgba(10, 42, 102, .10);
  --shadow-lg: 0 24px 60px rgba(8, 31, 77, .18);
  --radius: 14px;
  --radius-lg: 20px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --dur: .5s;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

::selection { background: var(--brand-500); color: #fff; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 通用文字 ---------- */
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; letter-spacing: .01em; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--green-600); font-size: 13px; font-weight: 600;
  letter-spacing: .35em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--green); }

.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow::before { display: none; }
.section-head h2 { font-size: clamp(24px, 3.2vw, 36px); margin: 10px 0 12px; }
.section-head p { color: var(--muted); font-size: 16px; }
.section-head .en { color: var(--brand-500); font-size: 12px; letter-spacing: .3em; text-transform: uppercase; font-weight: 600; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 10px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .2s var(--ease);
  white-space: nowrap;
}
.btn:disabled { cursor: wait; opacity: .72; transform: none; box-shadow: none; }
.btn.btn-primary { background: linear-gradient(135deg, var(--brand-700), var(--brand-500)); color: #fff; box-shadow: 0 8px 20px rgba(21, 101, 216, .35); }
.btn.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(21, 101, 216, .45); }
.btn.btn-ghost { border-color: rgba(255, 255, 255, .55); color: #fff; background: rgba(255, 255, 255, .08); backdrop-filter: blur(4px); }
.btn.btn-ghost:hover { background: rgba(255, 255, 255, .18); transform: translateY(-2px); }
.btn.btn-outline { border-color: var(--brand-500); color: var(--brand-600); background: #fff; }
.btn.btn-outline:hover { background: var(--brand-50); transform: translateY(-2px); }
.btn.btn-green { background: linear-gradient(135deg, var(--green-600), var(--green)); color: #fff; box-shadow: 0 8px 20px rgba(31, 165, 102, .3); }
.btn.btn-green:hover { transform: translateY(-2px); }

/* ---------- 顶部信息条 ---------- */
.topbar { background: var(--brand-900); color: rgba(255, 255, 255, .85); font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 34px; gap: 16px; }
.topbar span { display: inline-flex; align-items: center; gap: 6px; }
.topbar .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); display: inline-block; }
.topbar a:hover { color: #fff; }

/* ---------- 导航 ---------- */
.header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); transition: box-shadow .25s; }
.header.scrolled { box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 44px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text b { font-size: 19px; color: var(--brand-800); letter-spacing: .06em; }
.brand-text span { font-size: 11px; color: var(--muted); letter-spacing: .28em; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  position: relative; padding: 10px 18px; font-size: 15.5px; font-weight: 500; color: var(--ink-2);
  border-radius: 8px; transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 4px; height: 2px;
  background: var(--brand-500); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--brand-600); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta { margin-left: 14px; padding: 10px 22px !important; }
.nav-links a.nav-cta, .nav-links a.nav-cta:hover, .nav-links a.nav-cta.active { color: #fff; }
.nav-links a.nav-cta::after { display: none; }

.nav-toggle { display: none; background: none; border: 0; width: 42px; height: 42px; cursor: pointer; position: relative; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 8px; width: 26px; height: 2px; background: var(--ink); transition: .3s;
}
.nav-toggle span { top: 20px; }
.nav-toggle span::before { top: -8px; left: 0; }
.nav-toggle span::after { top: 8px; left: 0; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 页头（内页） ---------- */
.page-hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(120deg, var(--brand-900) 0%, var(--brand-800) 55%, var(--brand-600) 100%);
  padding: clamp(56px, 8vw, 96px) 0;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='64' viewBox='0 0 56 64'%3E%3Cpath d='M28 2 52 16v28L28 58 4 44V16z' fill='none' stroke='rgba(255,255,255,.10)' stroke-width='1.5'/%3E%3C/svg%3E");
  background-size: 56px 64px;
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { font-size: 13px; color: rgba(255, 255, 255, .65); margin-bottom: 14px; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); }
.page-hero h1 .en { display: block; font-size: clamp(15px, 1.6vw, 20px); font-weight: 600; letter-spacing: .18em; color: rgba(255, 255, 255, .55); text-transform: uppercase; margin-top: 8px; }
.page-hero p.lead { margin-top: 14px; max-width: 640px; color: rgba(255, 255, 255, .82); font-size: 16px; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(115deg, var(--brand-900) 0%, var(--brand-800) 48%, var(--brand-700) 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .55; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='64' viewBox='0 0 56 64'%3E%3Cpath d='M28 2 52 16v28L28 58 4 44V16z' fill='none' stroke='rgba(255,255,255,.09)' stroke-width='1.5'/%3E%3C/svg%3E");
  background-size: 56px 64px;
}
.hero::after {
  content: ""; position: absolute; right: -180px; top: -180px; width: 560px; height: 560px;
  border-radius: 50%; background: radial-gradient(circle, rgba(31,165,102,.28), transparent 62%); pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 4vw, 64px); align-items: center; padding: clamp(56px, 7vw, 104px) 0;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .22);
  font-size: 13px; letter-spacing: .12em; margin-bottom: 22px;
}
.hero-tag i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.hero h1 { font-size: clamp(30px, 4.6vw, 52px); letter-spacing: .02em; }
.hero h1 em { font-style: normal; color: #7CE0AE; }
.hero .lead { margin: 20px 0 30px; color: rgba(255, 255, 255, .82); font-size: clamp(15px, 1.4vw, 17px); max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 26px; margin-top: 38px; flex-wrap: wrap; }
.hero-points div { display: flex; flex-direction: column; }
.hero-points b { font-size: 22px; color: #7CE0AE; }
.hero-points span { font-size: 13px; color: rgba(255, 255, 255, .66); }

.hero-visual { position: relative; }
.hero-visual .photo {
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .16); transform: rotate(1.2deg);
}
.hero-visual .photo img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 5/4; }
.hero-chip {
  position: absolute; background: rgba(255, 255, 255, .96); color: var(--ink);
  border-radius: 12px; padding: 12px 18px; box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 600;
  animation: floaty 6s ease-in-out infinite;
}
.hero-chip i { width: 34px; height: 34px; border-radius: 9px; background: var(--brand-50); color: var(--brand-600); display: flex; align-items: center; justify-content: center; font-style: normal; font-size: 16px; }
.hero-chip small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }
.hero-chip.c1 { top: -22px; right: 6%; }
.hero-chip.c2 { bottom: -20px; left: -14px; animation-delay: 1.6s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ---------- 数据条 ---------- */
.stats { background: #fff; border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 34px 12px; text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: 0; top: 30%; height: 40%; width: 1px; background: var(--line); }
.stat b { font-size: clamp(28px, 3vw, 38px); color: var(--brand-700); font-variant-numeric: tabular-nums; }
.stat b i { font-style: normal; color: var(--green-600); font-size: .68em; margin-left: 2px; }
.stat > span { display: block; color: var(--muted); font-size: 14px; margin-top: 4px; }

/* ---------- 区块 ---------- */
.section { padding: clamp(64px, 8vw, 104px) 0; scroll-margin-top: 90px; }
[id] { scroll-margin-top: 90px; }
.section.alt { background: #fff; }
.section.tint { background: linear-gradient(180deg, var(--brand-50), #fff 60%); }

/* 关于摘要 */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 72px); align-items: center; }
.about-media { position: relative; }
.about-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 16/7.2; object-fit: cover; width: 100%; }
.about-media .badge {
  position: absolute; right: -14px; bottom: -22px; background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
  color: #fff; border-radius: var(--radius); padding: 16px 22px; box-shadow: var(--shadow-md); text-align: center;
}
.about-media .badge b { font-size: 24px; display: block; }
.about-media .badge span { font-size: 12.5px; color: rgba(255, 255, 255, .8); }
.about-copy h2 { font-size: clamp(24px, 3vw, 34px); margin: 10px 0 18px; }
.about-copy p { color: var(--ink-2); margin-bottom: 14px; }
.about-list { margin: 20px 0 28px; display: grid; gap: 10px; }
.about-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink-2); }
.about-list li::before { content: ""; flex: 0 0 auto; width: 18px; height: 18px; margin-top: 5px; border-radius: 50%; background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4 10-10'/%3E%3C/svg%3E") center/12px no-repeat; }

/* 核心业务双卡 */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.duo-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 380px;
  display: flex; align-items: flex-end; color: #fff; box-shadow: var(--shadow-md); transition: transform .3s var(--ease), box-shadow .3s;
}
.duo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.duo-card .bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.duo-card:hover .bg { transform: scale(1.05); }
.duo-card .veil { position: absolute; inset: 0; background: linear-gradient(200deg, rgba(8,31,77,.05) 30%, rgba(8,31,77,.88) 88%); }
.duo-card .body { position: relative; padding: 30px; }
.duo-card .num {
  position: absolute; top: 22px; right: 24px; font-size: 15px; font-weight: 700; letter-spacing: .1em;
  color: rgba(255,255,255,.85); border: 1px solid rgba(255,255,255,.4); padding: 4px 12px; border-radius: 999px;
}
.duo-card h3 { font-size: 24px; margin-bottom: 8px; }
.duo-card p { color: rgba(255, 255, 255, .82); font-size: 14.5px; margin-bottom: 16px; max-width: 420px; }
.duo-card .more { display: inline-flex; align-items: center; gap: 6px; color: #7CE0AE; font-weight: 600; font-size: 14px; }
.duo-card .more:hover { gap: 10px; } .duo-card .more { transition: gap .2s; }

/* 产品网格 */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.p-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: transform .28s var(--ease), box-shadow .28s, border-color .28s;
}
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-100); }
.p-card .thumb { background: #F2F5F9; aspect-ratio: 1/ .9; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.p-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.p-card:hover .thumb img { transform: scale(1.06); }
.p-card .meta { padding: 16px 18px 18px; border-top: 1px solid var(--line); }
.p-card .meta h3 { font-size: 16px; color: var(--ink); }
.p-card .meta span { font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }

.p-group-title { display: flex; align-items: center; gap: 14px; margin: 52px 0 24px; }
.p-group-title:first-of-type { margin-top: 0; }
.p-group-title .hex {
  width: 40px; height: 44px; background: linear-gradient(135deg, var(--brand-700), var(--brand-500)); color: #fff;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px;
}
.p-group-title h3 { font-size: 21px; }
.p-group-title small { color: var(--muted); font-weight: 400; }
.center-btn { text-align: center; margin-top: 44px; }

/* 石英暗色卡 */
.p-card.dark .thumb { background: #0E1420; }

/* 应用 */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.a-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 260px;
  display: flex; align-items: flex-end; color: #fff; box-shadow: var(--shadow-sm);
}
.a-card .bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.a-card:hover .bg { transform: scale(1.06); }
.a-card .veil { position: absolute; inset: 0; background: linear-gradient(200deg, rgba(8,31,77,.08) 25%, rgba(8,31,77,.86) 90%); }
.a-card .body { position: relative; padding: 24px; }
.a-card h3 { font-size: 19px; margin-bottom: 6px; }
.a-card p { font-size: 13.5px; color: rgba(255, 255, 255, .8); }
.a-card .k {
  display: inline-block; font-size: 11.5px; letter-spacing: .14em; color: #7CE0AE; margin-bottom: 8px; font-weight: 600;
}

/* 服务 */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.s-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 28px;
  position: relative; transition: transform .28s var(--ease), box-shadow .28s;
}
.s-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.s-card .step {
  position: absolute; top: 26px; right: 26px; font-size: 40px; font-weight: 800; color: var(--brand-50);
  font-variant-numeric: tabular-nums; line-height: 1;
}
.s-card .ico {
  width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
  color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px;
}
.s-card h3 { font-size: 19px; margin-bottom: 10px; }
.s-card p { color: var(--muted); font-size: 14.5px; }

/* 牌号表 */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
table.grades { width: 100%; border-collapse: collapse; min-width: 860px; font-variant-numeric: tabular-nums; }
table.grades th, table.grades td { padding: 13px 16px; text-align: center; font-size: 14px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.grades thead th { background: var(--brand-800); color: #fff; font-weight: 600; position: sticky; top: 0; }
table.grades thead tr.sub th { background: var(--brand-700); font-size: 12.5px; font-weight: 400; color: rgba(255,255,255,.85); }
table.grades tbody tr:hover td { background: var(--brand-50); }
table.grades td.name { font-weight: 700; color: var(--brand-800); }
table.grades tr.cat td { background: #F2F6FC; font-weight: 600; color: var(--brand-700); text-align: left; font-size: 13px; letter-spacing: .08em; }
.table-note { color: var(--muted); font-size: 13px; margin-top: 14px; }

/* CTA 条 */
.cta-band { background: linear-gradient(115deg, var(--brand-900), var(--brand-700)); color: #fff; position: relative; overflow: hidden; }
.cta-band::after {
  content: ""; position: absolute; inset: 0; opacity: .4; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='64' viewBox='0 0 56 64'%3E%3Cpath d='M28 2 52 16v28L28 58 4 44V16z' fill='none' stroke='rgba(255,255,255,.12)' stroke-width='1.5'/%3E%3C/svg%3E");
  background-size: 56px 64px;
}
.cta-band .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 46px 0; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(21px, 2.6vw, 30px); }
.cta-band p { color: rgba(255, 255, 255, .75); margin-top: 6px; font-size: 15px; }
.cta-band .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-band .tel { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; color: #7CE0AE; font-variant-numeric: tabular-nums; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 56px; }
.c-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 26px; text-align: center; transition: transform .28s var(--ease), box-shadow .28s; }
.c-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.c-card .ico { width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%; background: var(--brand-50); color: var(--brand-600); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.c-card h3 { font-size: 17px; margin-bottom: 8px; }
.c-card p { color: var(--ink-2); font-size: 15px; }
.c-card a.tel-link { font-size: 21px; font-weight: 800; color: var(--brand-700); font-variant-numeric: tabular-nums; }
.c-card a.tel-link:hover { color: var(--brand-500); }
.c-card img.qr { width: 132px; height: 132px; object-fit: cover; margin: 8px auto 6px; border-radius: 10px; border: 1px solid var(--line); }
.c-card small { color: var(--muted); }
.c-card p.mails { display: grid; grid-template-columns: minmax(0, 1fr); justify-items: center; gap: 4px; width: 100%; margin: 0; text-align: center; }
.c-card .mail-label { display: block; font-size: 12px; line-height: 1.4; color: var(--muted); margin-top: 8px; }
.c-card .mail-label:first-child { margin-top: 0; }
.c-card a.mail-link { max-width: 100%; font-size: 14.5px; font-weight: 600; color: var(--brand-700); overflow-wrap: anywhere; }
.c-card a.mail-link:hover { color: var(--brand-500); }
.c-card p.mails + small { display: block; margin-top: 12px; line-height: 1.6; }
.c-card.map-link { cursor: pointer; }
.c-card.map-link:hover small { color: var(--brand-600); }

.contact-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: start; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 21px; margin-bottom: 6px; }
.form-card > p { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.field label i { color: #D64545; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 14.5px;
  font-family: inherit; background: #FBFCFE; color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(21, 101, 216, .14); background: #fff;
}
.field textarea { min-height: 110px; resize: vertical; }
.form-msg { display: none; margin-top: 14px; padding: 13px 16px; border-radius: 10px; background: #EAF7F0; color: var(--green-600); font-size: 14px; border: 1px solid #BFE8D2; }
.form-msg.error { background: #FFF3F1; color: #A83232; border-color: #F0C4BE; }
.form-msg .manual-copy { margin-top: 10px; padding: 10px 12px; background: #F5F7FA; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-2); font-size: 13px; white-space: pre-wrap; user-select: all; }
.form-msg.show { display: block; animation: fadeUp .4s var(--ease); }
.hp-field { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

.contact-side { display: grid; gap: 24px; }
.map-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.map-card .map-visual {
  height: 190px; position: relative;
  background: linear-gradient(140deg, var(--brand-800), var(--brand-600));
}
.map-card .map-visual::after {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='64' viewBox='0 0 56 64'%3E%3Cpath d='M28 2 52 16v28L28 58 4 44V16z' fill='none' stroke='rgba(255,255,255,.13)' stroke-width='1.5'/%3E%3C/svg%3E");
  background-size: 56px 64px;
}
.map-card .pin {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -100%); z-index: 1; text-align: center;
}
.map-card .pin i {
  display: block; width: 22px; height: 22px; margin: 0 auto; background: var(--green); border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg); box-shadow: 0 0 0 8px rgba(31,165,102,.25);
}
.map-card .map-body { padding: 22px 24px; }
.map-card h3 { font-size: 17px; margin-bottom: 8px; }
.map-card p { color: var(--ink-2); font-size: 14.5px; margin-bottom: 14px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--brand-900); color: rgba(255, 255, 255, .72); margin-top: 0; }
.footer-main { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.15fr; gap: 40px; padding: 64px 0 44px; }
.footer .fbrand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer .fbrand .logo-text b { font-size: 20px; color: #fff; letter-spacing: .08em; display: block; line-height: 1.25; }
.footer .fbrand .logo-text span { font-size: 11px; letter-spacing: .3em; color: rgba(255, 255, 255, .5); }
.footer .fbrand .mark {
  width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--brand-500), var(--green));
  display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; font-size: 19px;
}
.footer h4 { color: #fff; font-size: 15.5px; margin-bottom: 18px; letter-spacing: .06em; }
.footer ul { display: grid; gap: 10px; font-size: 14px; }
.footer ul a:hover { color: #7CE0AE; }
.footer .fabout p { font-size: 13.8px; line-height: 1.9; }
.footer .fcontact li { display: flex; gap: 9px; align-items: flex-start; }
.footer .fcontact i { font-style: normal; color: #7CE0AE; margin-top: 1px; }
.footer .fqr { display: flex; gap: 14px; align-items: center; margin-top: 18px; }
.footer .fqr img { width: 84px; height: 84px; border-radius: 10px; background: #fff; padding: 4px; }
.footer .fqr span { font-size: 12.5px; color: rgba(255, 255, 255, .6); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 20px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .45); }
.footer-bottom a:hover { color: #fff; }

/* 返回顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px; border-radius: 12px; border: 0; cursor: pointer;
  background: var(--brand-700); color: #fff; font-size: 19px; box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none; transform: translateY(12px); transition: .3s var(--ease); z-index: 90;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--brand-500); }

/* ---------- 动效 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }

.hero .anim { opacity: 0; animation: fadeUp .8s var(--ease) forwards; }
.hero .anim.d1 { animation-delay: .1s; }
.hero .anim.d2 { animation-delay: .22s; }
.hero .anim.d3 { animation-delay: .34s; }
.hero .anim.d4 { animation-delay: .46s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important; animation-iteration-count: 1 !important;
    transition-duration: .001ms !important; scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero .anim { opacity: 1; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .contact-split { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .topbar .container span.hide-m { display: none; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff;
    flex-direction: column; align-items: stretch; padding: 12px 5% 20px; gap: 4px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 10px; border-radius: 10px; }
  .nav-links a::after { display: none; }
  .nav-links a:hover, .nav-links a.active { background: var(--brand-50); }
  .nav-cta { margin: 8px 10px 0; text-align: center; }
  .nav-links a.nav-cta, .nav-links a.nav-cta:hover, .nav-links a.nav-cta.active { background: linear-gradient(135deg, var(--brand-700), var(--brand-500)); color: #fff; }
  .hero-inner { grid-template-columns: 1fr; padding-bottom: 76px; }
  .hero-visual { max-width: 560px; }
  .hero-chip.c2 { left: 6px; }
  .about-grid { grid-template-columns: 1fr; }
  .duo { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3)::before { display: none; }
  .service-grid, .app-grid, .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .product-grid, .product-grid.cols-3 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .p-card .meta { padding: 12px 13px 14px; }
  .p-card .meta h3 { font-size: 14px; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .about-media .badge { right: 8px; bottom: -18px; }
  .stat b { font-size: 26px; }
}