/* ==========================================================================
   西安光影文化 · 无人机航拍官网
   1. 变量  2. Reset  3. 排版与工具  4. 按钮  5. 站点头部/导航
   6. 首屏  7. 区块与标题  8. 卡片  9. 流程/时间轴  10. 表格
   11. FAQ  12. 内页头/面包屑  13. 联系  14. 页脚  15. 移动端悬浮
   16. 动效  17. 响应式
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #0b1d33;
  --ink-2: #17334f;
  --ink-3: #24425f;
  --sky: #2e9bff;
  --sky-d: #1879dd;
  --sky-l: #e8f3ff;
  --gold: #d99b4e;
  --gold-l: #f7ecdb;
  --paper: #f6f9fd;
  --paper-2: #edf3fa;
  --line: #dfe8f3;
  --muted: #5d7590;
  --white: #fff;
  --shadow-s: 0 2px 8px rgba(16, 41, 68, .06);
  --shadow-m: 0 12px 32px rgba(16, 41, 68, .10);
  --shadow-l: 0 24px 60px rgba(16, 41, 68, .16);
  --r-s: 8px;
  --r-m: 14px;
  --r-l: 22px;
  --container: 1180px;
  --header-h: 76px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img, svg, video { max-width: 100%; display: block; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure { margin: 0; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; }

/* ---------- 3. 排版与工具 ---------- */
h1 { font-size: clamp(2rem, 4.4vw, 3.5rem); line-height: 1.18; letter-spacing: -.02em; font-weight: 700; }
h2 { font-size: clamp(1.5rem, 2.7vw, 2.25rem); line-height: 1.3; letter-spacing: -.01em; font-weight: 700; }
h3 { font-size: 1.1875rem; line-height: 1.5; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }
p { color: var(--ink-2); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.section--tight { padding: 64px 0; }
.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: var(--white); }
.section--ink p { color: rgba(255, 255, 255, .72); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.lead { font-size: 1.0625rem; color: var(--muted); max-width: 62ch; }
.gold { color: var(--gold); }
.text-center { text-align: center; }
.text-center .lead { margin-inline: auto; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 26px; border-radius: 999px;
  font-weight: 600; font-size: .9375rem; line-height: 1;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn--primary { background: var(--sky); color: #fff; box-shadow: 0 10px 24px rgba(46, 155, 255, .28); }
.btn--primary:hover { background: var(--sky-d); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(46, 155, 255, .34); }
.btn--ghost { border: 1px solid rgba(255, 255, 255, .38); color: #fff; backdrop-filter: blur(6px); }
.btn--ghost:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .7); }
.btn--line { border: 1px solid var(--line); color: var(--ink); background: #fff; }
.btn--line:hover { border-color: var(--sky); color: var(--sky-d); transform: translateY(-2px); }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- 5. 站点头部 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background-color .3s var(--ease), border-color .3s var(--ease),
    box-shadow .3s var(--ease), color .3s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .96);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(16, 41, 68, .06);
}
/* 首页首屏：未滚动时透明化 */
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) { background: transparent; color: #fff; }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .brand-name { color: #fff; }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .brand-sub { color: rgba(255, 255, 255, .62); }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .nav-link { color: rgba(255, 255, 255, .82); }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .nav-link:hover,
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .nav-link.is-active { color: #fff; }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .nav-toggle span { background: #fff; }
body.has-hero:not(.nav-open) .site-header:not(.is-scrolled) .btn--line { border-color: rgba(255, 255, 255, .4); color: #fff; background: transparent; }

.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; }
.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 1.0625rem; font-weight: 700; letter-spacing: .01em; color: var(--ink); }
.brand-sub { font-size: .6875rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative; padding: 10px 15px; border-radius: 999px;
  font-size: .9375rem; color: var(--ink-2); transition: color .2s, background-color .2s;
}
.nav-link:hover { color: var(--sky-d); background: rgba(46, 155, 255, .07); }
.nav-link.is-active { color: var(--sky-d); font-weight: 600; }
.nav-link.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  width: 16px; height: 2px; border-radius: 2px; background: var(--gold);
}
.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.header-phone { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: .9375rem; }
.header-phone svg { width: 16px; height: 16px; color: var(--gold); }

.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; align-items: center; justify-content: center; }
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px;
  position: relative; transition: transform .3s var(--ease), background-color .3s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: inherit; border-radius: 2px;
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before,
body.nav-open .nav-toggle span::after { background: var(--ink); }
body.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

/* 移动端抽屉 */
@media (max-width: 980px) {
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 0; padding: 12px 24px 26px; background: #fff;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-m);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease);
  }
  body.nav-open .nav { opacity: 1; transform: none; pointer-events: auto; }
  body.nav-open .site-header { background: #fff; color: var(--ink); }
  body.nav-open .site-header .brand-name { color: var(--ink); }
  body.nav-open .site-header .brand-sub { color: var(--muted); }
  body.nav-open .site-header .nav-toggle span { background: transparent; }
  .nav-link { padding: 14px 4px; border-radius: 0; font-size: 1rem; border-bottom: 1px solid var(--paper-2); color: var(--ink); }
  .nav-link.is-active::after { display: none; }
  .nav-link.is-active { color: var(--sky-d); }
  .nav-toggle { display: flex; }
  .header-phone { display: none; }
}

/* 窄屏隐藏头部 CTA，避免与汉堡按钮挤压 */
@media (max-width: 620px) {
  .header-actions .btn--line { display: none; }
  .header-inner { gap: 12px; }
  .brand-name { font-size: 1rem; }
  .brand-sub { font-size: .625rem; letter-spacing: .12em; }
}

/* ---------- 6. 首屏 ---------- */
.hero {
  position: relative; min-height: 100svh;
  padding: calc(var(--header-h) + 72px) 0 0; overflow: hidden;
  background: var(--ink);
}
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(6, 20, 36, .92) 0%, rgba(6, 20, 36, .72) 38%, rgba(6, 20, 36, .18) 72%, rgba(6, 20, 36, .34) 100%),
    linear-gradient(0deg, rgba(6, 20, 36, .78) 0%, rgba(6, 20, 36, 0) 45%);
}
.hero .container {
  position: relative; z-index: 2; width: 100%;
  display: flex; flex-direction: column;
  min-height: calc(100svh - var(--header-h) - 72px);
}
.hero-main { max-width: 660px; color: #fff; margin-top: auto; margin-bottom: auto; padding: 24px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: .8125rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--gold); font-weight: 600; margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; opacity: .8; }
.hero h1 { color: #fff; }
.hero h1 em { font-style: normal; color: #ffd9a3; }
.hero-desc {
  margin-top: 22px; font-size: 1.0625rem; color: rgba(255, 255, 255, .8);
  max-width: 52ch; line-height: 1.85;
}
.hero .btn-row { margin-top: 34px; }

.hero-stats {
  position: relative; z-index: 2; margin-top: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255, 255, 255, .14); border-radius: var(--r-m) var(--r-m) 0 0; overflow: hidden;
}
.hero-stat { background: rgba(8, 26, 46, .62); backdrop-filter: blur(10px); padding: 22px 24px; }
.hero-stat b { display: block; font-size: 1.75rem; line-height: 1.2; color: #fff; letter-spacing: -.01em; }
.hero-stat b small { font-size: .875rem; font-weight: 500; margin-left: 3px; color: rgba(255, 255, 255, .7); }
.hero-stat span { font-size: .8125rem; color: rgba(255, 255, 255, .62); }

@media (max-width: 860px) {
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 56px); }
  .hero .container { min-height: 0; }
  .hero-main { margin-top: 0; margin-bottom: 0; padding-bottom: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); border-radius: var(--r-m) var(--r-m) 0 0; }
  .hero-stat { padding: 16px 18px; }
  .hero-stat b { font-size: 1.375rem; }
}

/* ---------- 7. 区块与标题 ---------- */
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head .eyebrow { color: var(--gold); margin-bottom: 16px; }
.section-head h2 + .lead { margin-top: 16px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--split {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 40px;
  max-width: none;
}
.section-head--split .section-head-text { max-width: 660px; }
@media (max-width: 860px) { .section-head--split { flex-direction: column; align-items: flex-start; gap: 24px; } }

/* ---------- 8. 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-m);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); border-color: #cfe0f4; }
.card-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-body p { font-size: .9375rem; color: var(--muted); line-height: 1.75; }
.card-link { margin-top: auto; padding-top: 8px; display: inline-flex; align-items: center; gap: 6px; font-size: .9375rem; font-weight: 600; color: var(--sky-d); }
.card-link svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.card:hover .card-link svg { transform: translateX(4px); }
.card-tag {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-size: .75rem; font-weight: 600; letter-spacing: .04em;
  padding: 5px 11px; border-radius: 999px; color: #fff;
  background: rgba(11, 29, 51, .62); backdrop-filter: blur(6px);
}
.card-tag--gold { background: rgba(217, 155, 78, .92); }
.card--ink { background: var(--ink-2); border-color: transparent; }
.card--ink h3, .card--ink .card-link { color: #fff; }
.card--ink p { color: rgba(255, 255, 255, .68); }

/* 数据条 */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-m); overflow: hidden; }
.stat-cell { background: #fff; padding: 28px 24px; }
.stat-cell b { display: block; font-size: 1.875rem; color: var(--ink); line-height: 1.2; letter-spacing: -.02em; }
.stat-cell b small { font-size: .875rem; color: var(--gold); margin-left: 2px; font-weight: 600; }
.stat-cell span { font-size: .875rem; color: var(--muted); }
@media (max-width: 780px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }

/* 优势列表 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-m); overflow: hidden; }
.feature-item { background: #fff; padding: 30px 32px; display: flex; gap: 18px; }
.feature-num { font-size: .8125rem; font-weight: 700; color: var(--gold); letter-spacing: .06em; padding-top: 4px; flex: none; }
.feature-item h3 { margin-bottom: 8px; }
.feature-item p { font-size: .9375rem; color: var(--muted); margin: 0; line-height: 1.75; }
@media (max-width: 780px) { .feature-list { grid-template-columns: 1fr; } .feature-item { padding: 24px; } }

/* 行业胶囊 */
.pill-row { display: flex; flex-wrap: wrap; gap: 12px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px; background: #fff;
  border: 1px solid var(--line); font-size: .9375rem; color: var(--ink-2);
  transition: border-color .2s, color .2s, transform .2s;
}
.pill:hover { border-color: var(--sky); color: var(--sky-d); transform: translateY(-2px); }
.pill svg { width: 15px; height: 15px; color: var(--gold); }

/* ---------- 9. 流程 / 时间轴 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding-top: 34px; }
.step::before {
  content: ""; position: absolute; top: 13px; left: 41px; right: -20px; height: 1px;
  background: linear-gradient(90deg, var(--line), var(--line) 70%, transparent);
}
.step:last-child::before { display: none; }
.step-num {
  position: absolute; top: 0; left: 0; width: 34px; height: 26px; border-radius: 6px;
  background: var(--sky-l); color: var(--sky-d); font-size: .8125rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: .875rem; color: var(--muted); margin: 0; line-height: 1.7; }
@media (max-width: 980px) { .steps { grid-template-columns: repeat(2, 1fr); row-gap: 30px; } .step::before { display: none; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.steps--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 780px) { .steps--3 { grid-template-columns: 1fr; } }

.timeline { position: relative; padding-left: 26px; border-left: 1px solid var(--line); display: grid; gap: 28px; }
.timeline li { position: relative; }
.timeline li::before {
  content: ""; position: absolute; left: -31px; top: 9px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(217, 155, 78, .16);
}
.timeline b { display: block; font-size: .8125rem; letter-spacing: .08em; color: var(--gold); margin-bottom: 4px; }
.timeline p { margin: 0; font-size: .9375rem; color: var(--muted); }

/* ---------- 10. 表格 ---------- */
.table-wrap { border: 1px solid var(--line); border-radius: var(--r-m); overflow: hidden; background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
thead th {
  background: var(--paper); text-align: left; font-weight: 600; font-size: .8125rem;
  letter-spacing: .06em; color: var(--muted); padding: 15px 20px; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
tbody td { padding: 18px 20px; border-bottom: 1px solid var(--paper-2); color: var(--ink-2); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody td strong { color: var(--ink); font-weight: 600; }
@media (max-width: 780px) {
  .table-wrap { border: 0; background: transparent; }
  table, thead, tbody, tr, td { display: block; width: 100%; }
  thead { display: none; }
  tbody tr { background: #fff; border: 1px solid var(--line); border-radius: var(--r-m); margin-bottom: 14px; overflow: hidden; }
  tbody td { border-bottom: 1px solid var(--paper-2); padding: 14px 18px; }
  tbody td::before {
    content: attr(data-label); display: block; font-size: .75rem; letter-spacing: .06em;
    color: var(--muted); margin-bottom: 3px;
  }
}

/* ---------- 11. FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px 4px; cursor: pointer; font-weight: 600; font-size: 1rem; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 26px; height: 26px; border-radius: 50%;
  border: 1px solid var(--line); display: flex; align-items: center; justify-content: center;
  font-weight: 400; font-size: 1.05rem; color: var(--sky-d); transition: transform .25s var(--ease), background-color .25s;
}
.faq details[open] summary::after { content: "−"; background: var(--sky-l); transform: rotate(180deg); }
.faq-answer { padding: 0 4px 24px; color: var(--muted); font-size: .9375rem; max-width: 76ch; line-height: 1.85; }

/* ---------- 12. 内页头 / 面包屑 ---------- */
.page-hero {
  position: relative; padding: calc(var(--header-h) + 76px) 0 64px;
  background: var(--ink); color: #fff; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 420px at 82% 0%, rgba(46, 155, 255, .22), transparent 62%),
    radial-gradient(600px 320px at 8% 100%, rgba(217, 155, 78, .14), transparent 65%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; max-width: 20ch; }
.page-hero .lead { color: rgba(255, 255, 255, .74); margin-top: 18px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .8125rem; color: rgba(255, 255, 255, .58); margin-bottom: 22px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: .5; }
@media (max-width: 860px) { .page-hero { padding: calc(var(--header-h) + 52px) 0 48px; } }

/* 侧边锚点 */
.anchor-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.anchor-nav a {
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; font-size: .875rem; color: var(--ink-2); transition: all .2s;
}
.anchor-nav a:hover { border-color: var(--sky); color: var(--sky-d); background: var(--sky-l); }

/* 服务详情块 */
.svc { padding: 56px 0; border-top: 1px solid var(--line); scroll-margin-top: 96px; }
.svc:first-of-type { border-top: 0; }
.svc-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.svc-grid--reverse .svc-text { order: 2; }
.svc-media { border-radius: var(--r-l); overflow: hidden; box-shadow: var(--shadow-m); }
.svc-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.svc-text h2 { margin-bottom: 6px; }
.svc-kicker { font-size: .8125rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin-bottom: 14px; }
.svc-text p { color: var(--muted); margin-top: 14px; font-size: .9688rem; line-height: 1.85; }
.svc-list { margin-top: 20px; display: grid; gap: 10px; }
.svc-list li { display: flex; gap: 10px; font-size: .9375rem; color: var(--ink-2); }
.svc-list li svg { width: 17px; height: 17px; flex: none; margin-top: 5px; color: var(--sky); }
.svc-meta { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }
.svc-meta span {
  font-size: .8125rem; padding: 6px 13px; border-radius: 6px;
  background: var(--paper); border: 1px solid var(--line); color: var(--muted);
}
@media (max-width: 900px) {
  .svc-grid { grid-template-columns: 1fr; gap: 28px; }
  .svc-grid--reverse .svc-text { order: 0; }
}

/* 价格卡 */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.price {
  border: 1px solid var(--line); border-radius: var(--r-m); background: #fff;
  padding: 30px 28px; display: flex; flex-direction: column; gap: 14px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.price:hover { transform: translateY(-4px); box-shadow: var(--shadow-m); }
.price--feature { border-color: var(--sky); box-shadow: 0 16px 40px rgba(46, 155, 255, .14); }
.price h3 { font-size: 1.0625rem; }
.price-amount { font-size: 1.75rem; font-weight: 700; color: var(--ink); letter-spacing: -.02em; }
.price-amount span { font-size: .8125rem; font-weight: 500; color: var(--muted); margin-left: 4px; }
.price ul { display: grid; gap: 9px; font-size: .9rem; color: var(--muted); }
.price ul li { display: flex; gap: 9px; }
.price ul li::before { content: "✓"; color: var(--sky); font-weight: 700; flex: none; }
.price .btn { margin-top: auto; }
@media (max-width: 860px) { .price-grid { grid-template-columns: 1fr; } }

/* 案例筛选 + 灯箱 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.filter-btn {
  padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; font-size: .875rem; color: var(--ink-2); transition: all .2s;
}
.filter-btn:hover { border-color: var(--sky); color: var(--sky-d); }
.filter-btn.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 980px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .case-grid { grid-template-columns: 1fr; } }
.case-card { cursor: pointer; text-align: left; padding: 0; }
.case-card .card-media { aspect-ratio: 3 / 2; }
.case-card[hidden] { display: none; }
.case-play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(0deg, rgba(6, 20, 36, .45), rgba(6, 20, 36, .05));
  opacity: 0; transition: opacity .3s var(--ease);
}
.case-play span {
  width: 54px; height: 54px; border-radius: 50%; background: rgba(255, 255, 255, .92);
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-m);
}
.case-play svg { width: 18px; height: 18px; color: var(--ink); margin-left: 3px; }
.case-card:hover .case-play { opacity: 1; }

dialog.lightbox {
  border: 0; border-radius: var(--r-l); padding: 0; max-width: 780px; width: calc(100% - 40px);
  box-shadow: var(--shadow-l); background: #fff; color: var(--ink);
}
dialog.lightbox::backdrop { background: rgba(6, 20, 36, .72); backdrop-filter: blur(3px); }
.lightbox-media { background: var(--ink); }
.lightbox-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.lightbox-body { padding: 26px 30px 30px; }
.lightbox-body h3 { margin-bottom: 8px; }
.lightbox-body p { font-size: .9375rem; color: var(--muted); }
.lightbox-close {
  position: absolute; top: 14px; right: 14px; width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255, 255, 255, .92); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-s);
}
.lightbox-spec { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.lightbox-spec span { font-size: .75rem; padding: 5px 11px; background: var(--paper); border-radius: 6px; color: var(--muted); }

/* ---------- 13. 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; gap: 36px; } }
.contact-cards { display: grid; gap: 14px; }
.contact-card {
  display: flex; gap: 16px; padding: 22px 24px; border: 1px solid var(--line);
  border-radius: var(--r-m); background: #fff; align-items: flex-start;
}
.contact-card .ico {
  width: 42px; height: 42px; border-radius: 11px; background: var(--sky-l);
  display: flex; align-items: center; justify-content: center; flex: none; color: var(--sky-d);
}
.contact-card .ico svg { width: 19px; height: 19px; }
.contact-card h4 { font-size: .8125rem; letter-spacing: .1em; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; font-weight: 600; }
.contact-card strong { font-size: 1.0625rem; font-weight: 600; color: var(--ink); word-break: break-all; }
.contact-card p { font-size: .875rem; color: var(--muted); margin: 2px 0 0; }
.contact-card .copy-btn {
  margin-left: auto; font-size: .8125rem; color: var(--sky-d); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; flex: none; transition: all .2s;
}
.contact-card .copy-btn:hover { border-color: var(--sky); background: var(--sky-l); }

.qr-box {
  border: 1px solid var(--line); border-radius: var(--r-m); padding: 26px;
  background: #fff; text-align: center;
}
.qr-box img { width: 176px; height: 176px; margin: 0 auto 14px; border-radius: 10px; }
.qr-svg { display: block; width: 176px; height: 176px; margin: 0 auto 14px; border-radius: 10px; background: #fff; }
.qr-box p { font-size: .875rem; color: var(--muted); margin: 0; }

.map-box { border-radius: var(--r-m); overflow: hidden; border: 1px solid var(--line); background: var(--paper); }
.map-box .map-fallback {
  aspect-ratio: 16 / 9; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; color: var(--muted); font-size: .9375rem; text-align: center; padding: 24px;
  background:
    radial-gradient(600px 240px at 50% 0%, rgba(46, 155, 255, .10), transparent 70%),
    repeating-linear-gradient(45deg, #f2f7fd 0 12px, #eef5fc 12px 24px);
}
.map-box .map-fallback svg { width: 30px; height: 30px; color: var(--sky); }

/* CTA 横幅 */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--r-l);
  background: linear-gradient(120deg, #0b1d33 0%, #143553 58%, #1b4a72 100%);
  color: #fff; padding: 52px 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; top: -120px; width: 380px; height: 380px;
  border-radius: 50%; background: radial-gradient(circle, rgba(46, 155, 255, .34), transparent 68%);
}
.cta-band h2 { color: #fff; max-width: 22ch; }
.cta-band p { color: rgba(255, 255, 255, .72); margin-top: 12px; max-width: 46ch; }
.cta-band .btn-row { position: relative; z-index: 1; flex: none; }
@media (max-width: 860px) { .cta-band { flex-direction: column; align-items: flex-start; padding: 36px 28px; } }

/* ---------- 14. 页脚 ---------- */
.site-footer { background: #071627; color: rgba(255, 255, 255, .66); padding: 68px 0 0; font-size: .9375rem; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 52px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: rgba(255, 255, 255, .45); }
.footer-about { margin-top: 18px; font-size: .875rem; line-height: 1.85; max-width: 34ch; color: rgba(255, 255, 255, .58); }
.footer-col h4 { color: #fff; font-size: .875rem; letter-spacing: .08em; margin-bottom: 16px; font-weight: 600; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255, 255, 255, .64); font-size: .9rem; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; font-size: .9rem; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 5px; color: var(--gold); }
.footer-contact strong { color: #fff; font-weight: 600; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  font-size: .8125rem; color: rgba(255, 255, 255, .48);
}
.footer-bottom a { color: rgba(255, 255, 255, .62); }
.footer-bottom a:hover { color: #fff; text-decoration: underline; }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
@media (max-width: 980px) { .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }

/* ---------- 15. 移动端悬浮操作条 ---------- */
.mobile-bar { display: none; }
@media (max-width: 900px) {
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, .96); backdrop-filter: blur(14px);
    border-top: 1px solid var(--line);
  }
  .mobile-bar .btn { min-height: 46px; font-size: .9375rem; }
  body { padding-bottom: 74px; }
}

/* ---------- 16. 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- 17. 细节修正 ---------- */
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }
.note { font-size: .8125rem; color: var(--muted); line-height: 1.8; }
.note--box { padding: 16px 20px; background: var(--paper); border-left: 3px solid var(--gold); border-radius: 0 var(--r-s) var(--r-s) 0; margin-top: 24px; }
.prose h2 { margin-top: 40px; margin-bottom: 14px; }
.prose h3 { margin-top: 28px; margin-bottom: 10px; }
.prose p { margin-bottom: 14px; color: var(--muted); line-height: 1.9; }