/* =========================================================
   奕宁信息科技 - 全站样式
   主色调：浅蓝 ｜ 企业大气风 ｜ 响应式
   ========================================================= */
:root {
  --brand-50: #EFF6FF;
  --brand-100: #DBEAFF;
  --brand-200: #BFDAFF;
  --brand-300: #93C3FF;
  --brand-400: #60A5FA;
  --brand-500: #3B82F6;
  --brand-600: #2563EB;
  --brand-700: #1D4ED8;
  --brand-800: #1E40AF;
  --brand-900: #1E3A8A;
  --navy: #0B1F3F;
  --ink: #10233F;
  --body: #46586F;
  --muted: #6B7C94;
  --bg: #FFFFFF;
  --bg-soft: #F4F9FF;
  --line: #E3EDF9;
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 26px;
  --shadow-sm: 0 2px 10px rgba(16, 35, 63, 0.06);
  --shadow-md: 0 12px 30px -12px rgba(37, 99, 235, 0.25);
  --shadow-lg: 0 30px 60px -24px rgba(30, 64, 175, 0.35);
  --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
section[id] { scroll-margin-top: 96px; }
::selection { background: var(--brand-200); color: var(--brand-900); }
:focus-visible { outline: 3px solid var(--brand-400); outline-offset: 2px; border-radius: 4px; }

.container { width: min(1200px, 92%); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 12px; z-index: 200; background: var(--brand-700); color: #fff; padding: 10px 18px; border-radius: 10px; }
.skip-link:focus { left: 12px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px; font-size: 16px; font-weight: 600;
  border: 0; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s;
  line-height: 1.2; font-family: inherit;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: linear-gradient(120deg, #3B82F6, #1D4ED8); color: #fff; box-shadow: 0 10px 24px -8px rgba(37, 99, 235, 0.55); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 32px -10px rgba(37, 99, 235, 0.6); }
.btn-ghost { background: transparent; color: var(--brand-700); border: 1.5px solid var(--brand-300); }
.btn-ghost:hover { background: var(--brand-50); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--brand-700); box-shadow: 0 10px 24px -10px rgba(4, 18, 46, 0.5); }
.btn-light:hover { transform: translateY(-2px); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 8px 30px -18px rgba(16, 35, 63, 0.25); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark { width: 42px; height: 42px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: 0.5px; }
.logo-text span { font-size: 11px; color: var(--muted); letter-spacing: 2.5px; text-transform: uppercase; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative; padding: 8px 13px; font-size: 15px; font-weight: 500; color: var(--ink);
  border-radius: 8px; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--brand-600); background: var(--brand-50); }
.nav-links a.active { color: var(--brand-700); font-weight: 700; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 3px;
  border-radius: 3px; background: linear-gradient(90deg, var(--brand-400), var(--brand-600));
}
.nav-cta { flex-shrink: 0; }
.nav-cta .btn { padding: 11px 24px; font-size: 15px; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 0 96px;
  background: linear-gradient(160deg, #EAF3FF 0%, #DCEEFF 48%, #F4F9FF 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(var(--brand-300) 1.4px, transparent 1.4px);
  background-size: 26px 26px; opacity: 0.35;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.6), transparent 75%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.6), transparent 75%);
}
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.8); border: 1px solid var(--brand-200); color: var(--brand-700);
  font-size: 13.5px; font-weight: 600; letter-spacing: 0.06em;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand-500); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18); }
.hero h1 { font-size: clamp(2.15rem, 4.6vw, 3.35rem); line-height: 1.24; font-weight: 800; color: var(--ink); margin: 22px 0 18px; letter-spacing: 0.5px; }
.grad-text { background: linear-gradient(92deg, #1D4ED8, #2563EB 55%, #38BDF8); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 17px; max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags li {
  padding: 7px 15px; border-radius: 999px; background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--brand-100); color: var(--brand-800); font-size: 13.5px; font-weight: 600;
}
.hero-media { position: relative; }
.hero-media::before {
  content: ""; position: absolute; inset: -18px -18px auto auto; width: 60%; height: 60%;
  border-radius: 50%; background: radial-gradient(circle, rgba(96, 165, 250, 0.35), transparent 70%);
  z-index: 0;
}
.hero-media::after {
  content: ""; position: absolute; left: -26px; bottom: -26px; width: 150px; height: 150px;
  border-radius: 32px; background: linear-gradient(135deg, rgba(77, 184, 255, 0.5), rgba(37, 99, 235, 0.35));
  transform: rotate(18deg); z-index: 0;
}
.hero-media img { position: relative; z-index: 1; border-radius: 26px; box-shadow: var(--shadow-lg); aspect-ratio: 16 / 9; width: 100%; height: auto; object-fit: cover; }

/* ---------- 通用区块 ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; color: var(--ink); line-height: 1.3; letter-spacing: 0.3px; }
.section-head p { margin-top: 14px; font-size: 16.5px; }

/* ---------- 服务卡片 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 26px 26px; display: flex; flex-direction: column; gap: 14px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--brand-200); }
.icon-tile {
  width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center;
  background: var(--tile-bg, var(--brand-100)); color: var(--accent, var(--brand-600));
}
.icon-tile svg { width: 30px; height: 30px; }
.service-card h3 { font-size: 19px; font-weight: 700; color: var(--ink); }
.service-card p { font-size: 14.5px; flex: 1; }
.service-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.service-tags li { font-size: 12.5px; color: var(--brand-800); background: var(--brand-50); border: 1px solid var(--brand-100); padding: 4px 11px; border-radius: 999px; }
.card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14.5px; font-weight: 700; color: var(--brand-600); margin-top: 4px; }
.card-link svg { width: 15px; height: 15px; transition: transform .2s; }
.card-link:hover svg { transform: translateX(4px); }

/* 平台强调色 */
.svc-douyin { --accent: #FE2C55; --tile-bg: rgba(254, 44, 85, 0.1); }
.svc-xiaohongshu { --accent: #FF2442; --tile-bg: rgba(255, 36, 66, 0.1); }
.svc-tencent { --accent: #1470CC; --tile-bg: rgba(20, 112, 204, 0.12); }
.svc-baidu { --accent: #2932E1; --tile-bg: rgba(41, 50, 225, 0.1); }

/* ---------- 价值卡片 ---------- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; display: flex; gap: 18px; transition: transform .25s, box-shadow .25s; }
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.value-icon { flex-shrink: 0; width: 48px; height: 48px; border-radius: 14px; background: var(--brand-50); color: var(--brand-600); display: grid; place-items: center; }
.value-icon svg { width: 24px; height: 24px; }
.value-card h3 { font-size: 17.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.value-card p { font-size: 14.5px; }

/* ---------- 流程时间轴 ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.steps::before {
  content: ""; position: absolute; top: 27px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, var(--brand-200), var(--brand-400));
}
.step { text-align: center; position: relative; }
.step-num {
  width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%; position: relative; z-index: 1;
  background: linear-gradient(135deg, #4DB8FF, #2563EB); color: #fff;
  display: grid; place-items: center; font-size: 20px; font-weight: 800;
  box-shadow: 0 10px 22px -8px rgba(37, 99, 235, 0.6);
}
.step h3 { font-size: 17.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.step p { font-size: 14px; max-width: 26em; margin-inline: auto; }

/* ---------- 平台页面 Hero ---------- */
.page-hero { position: relative; overflow: hidden; padding: 64px 0 72px; background: linear-gradient(160deg, #EAF3FF, #DCEEFF 60%, #F4F9FF); }
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(var(--brand-300) 1.4px, transparent 1.4px);
  background-size: 26px 26px; opacity: 0.3;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.5), transparent 80%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.5), transparent 80%);
}
.page-hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.page-hero.center .container { grid-template-columns: 1fr; text-align: center; max-width: 860px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--brand-600); font-weight: 500; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--brand-300); }
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; color: var(--ink); line-height: 1.25; margin-bottom: 16px; }
.page-hero p.lead { font-size: 16.5px; max-width: 36em; }
.page-hero .hero-cta { margin: 26px 0 0; }
.page-hero-media img { border-radius: 22px; box-shadow: var(--shadow-md); aspect-ratio: 16 / 9; width: 100%; height: auto; object-fit: cover; }

/* ---------- 双栏内容 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-media img { border-radius: 22px; box-shadow: var(--shadow-md); width: 100%; height: auto; object-fit: cover; }
.split h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); font-weight: 800; color: var(--ink); margin: 14px 0 16px; line-height: 1.3; }
.split p { margin-bottom: 14px; }
.check-list li { position: relative; padding-left: 30px; margin-bottom: 12px; font-size: 15.5px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--brand-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center / 10px no-repeat;
}

/* ---------- 行业标签 ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; }
.chips li { padding: 10px 20px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--ink); font-size: 14.5px; font-weight: 600; box-shadow: var(--shadow-sm); }
.chips li::before { content: "·"; color: var(--brand-500); font-weight: 800; margin-right: 6px; }

/* ---------- 资讯卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-thumb { aspect-ratio: 16 / 9; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.news-cat { color: var(--brand-600); background: var(--brand-50); border: 1px solid var(--brand-100); padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.news-body h3 { font-size: 17.5px; font-weight: 700; color: var(--ink); line-height: 1.5; }
.news-body p { font-size: 14.5px; flex: 1; }
.news-body .card-link { margin-top: 4px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin-inline: auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.faq-item.open { border-color: var(--brand-300); box-shadow: var(--shadow-sm); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; background: none; border: 0; cursor: pointer; text-align: left; font-family: inherit; font-size: 16.5px; font-weight: 700; color: var(--ink); }
.faq-q .faq-icon { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--brand-50); color: var(--brand-600); display: grid; place-items: center; transition: transform .25s, background .25s, color .25s; }
.faq-q .faq-icon svg { width: 14px; height: 14px; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--brand-600); color: #fff; }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.faq-a > div { overflow: hidden; }
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a p { padding: 0 24px 22px; font-size: 15px; color: var(--body); }

/* ---------- CTA 横幅 ---------- */
.cta-band { padding: 96px 0; background: var(--bg-soft); }
.cta-card {
  position: relative; overflow: hidden; border-radius: 30px; padding: 64px 56px;
  background: linear-gradient(120deg, #0B2A5B 0%, #123F7A 55%, #0E63B8 100%);
  color: #fff; text-align: center;
}
.cta-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(147, 195, 255, 0.4) 1.4px, transparent 1.4px);
  background-size: 30px 30px; opacity: 0.35;
}
.cta-card h2 { position: relative; font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: 0.5px; }
.cta-card p { position: relative; margin: 14px auto 30px; max-width: 34em; color: rgba(255, 255, 255, 0.85); font-size: 16px; }
.cta-card .btn { position: relative; }
.cta-phone { position: relative; margin-top: 22px; font-size: 15px; color: rgba(255, 255, 255, 0.75); }
.cta-phone a { color: #fff; font-weight: 700; font-size: 20px; letter-spacing: 0.5px; margin-left: 8px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: #A9BBD6; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 48px; }
.footer-brand .logo-text strong { color: #fff; }
.footer-brand .logo-text span { color: #7C93B5; }
.footer-brand p { margin-top: 18px; font-size: 14.5px; max-width: 30em; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; letter-spacing: 0.5px; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul a { font-size: 14.5px; transition: color .2s, padding-left .2s; }
.footer-col ul a:hover { color: var(--brand-200); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; font-size: 14.5px; margin-bottom: 13px; align-items: flex-start; }
.footer-contact svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 4px; color: var(--brand-300); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: 13.5px; color: #7C93B5; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card { display: flex; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.contact-card .value-icon { width: 50px; height: 50px; }
.contact-card h3 { font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.contact-card p { font-size: 15px; color: var(--body); }
.contact-card a { color: var(--brand-600); font-weight: 600; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 32px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 20px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.form-card > p { font-size: 14.5px; margin-bottom: 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .field-full { grid-column: 1 / -1; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 7px; }
.field label em { color: #E5484D; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--line); border-radius: 12px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #FBFDFF; transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand-400); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.14); background: #fff; }
.field .err-msg { display: none; font-size: 12.5px; color: #E5484D; margin-top: 5px; }
.field.invalid input, .field.invalid textarea { border-color: #F87171; }
.field.invalid .err-msg { display: block; }
.form-tip { font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.map-card { margin-top: 48px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px 28px; display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
.map-card h3 { font-size: 18px; font-weight: 800; color: var(--ink); }
.map-card p { font-size: 14.5px; margin-top: 6px; }

/* ---------- 关于页 ---------- */
.mission-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mission-card { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 26px; }
.mission-card .icon-tile { margin: 0 auto 18px; }
.mission-card h3 { font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.mission-card p { font-size: 14.5px; }

/* ---------- 页内锚点 ---------- */
.anchor-nav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.anchor-nav a { padding: 9px 18px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--ink); transition: all .2s; }
.anchor-nav a:hover { border-color: var(--brand-300); color: var(--brand-700); background: var(--brand-50); }

/* ---------- 全局提示 ---------- */
.toast {
  position: fixed; left: 50%; bottom: 34px; z-index: 300;
  transform: translateX(-50%) translateY(16px);
  background: var(--navy); color: #fff; padding: 13px 26px; border-radius: 999px;
  font-size: 14.5px; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transition: opacity .3s, transform .3s, visibility .3s;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-links a { padding: 8px 10px; font-size: 14px; }
}
@media (max-width: 1100px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 76px; left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 14px 4vw 20px; display: none;
  }
  .nav-open .nav-links { display: flex; }
  .nav-links a { padding: 13px 16px; font-size: 15.5px; border-radius: 10px; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: var(--brand-50); }
  .nav-cta { display: none; }
  .hero .container, .page-hero .container, .split { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 72px; }
  .hero-media { order: -1; max-width: 560px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid, .mission-cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
  .steps::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .services-grid, .values-grid, .news-grid, .mission-cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { display: grid; grid-template-columns: 64px 1fr; gap: 0 18px; text-align: left; }
  .step-num { margin: 0; }
  .step h3 { margin-bottom: 4px; }
  .hero-tags { gap: 8px; }
  .cta-card { padding: 44px 26px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .page-hero { padding: 48px 0 56px; }
  .page-hero .hero-cta .btn { padding: 12px 22px; font-size: 15px; }
}

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