:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --faint: #86868b;
  --line: #d2d2d7;
  --bg: #fff;
  --bg2: #f5f5f7;
  --blue: #0071e3;
  --blue-link: #0066cc;
  --grad: linear-gradient(100deg, #0a84ff 0%, #6e5cff 38%, #c445f5 68%, #ff5fa2 100%);
  --grad-soft: linear-gradient(135deg, #eaf2ff 0%, #f3ecff 50%, #ffeef6 100%);
  --radius: 28px;
  --shadow-lg: 0 30px 60px -20px rgba(29, 29, 31, 0.28), 0 12px 24px -12px rgba(29, 29, 31, 0.12);
  --shadow-md: 0 18px 40px -18px rgba(29, 29, 31, 0.22);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 17px;
  line-height: 1.47;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.home { padding-top: 0; }
body:not(.home) { padding-top: 48px; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; }
button { cursor: pointer; }
a { color: inherit; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.skip { position: absolute; left: 16px; top: -48px; background: #fff; padding: 8px 12px; z-index: 200; border-radius: 8px; }
.skip:focus { top: 8px; }

/* 渐变文字 */
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 全局导航（浅色玻璃） ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: 48px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: rgba(255, 255, 255, 0.72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  color: var(--ink);
}
.wordmark, .nav-aside, .nav-toggle { position: relative; z-index: 2; }
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.wordmark::before {
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--grad);
}
.nav-links {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  pointer-events: none;
}
.nav-links > a, .has-sub, .sub, .sub a { pointer-events: auto; }
.nav-links > a, .has-sub > a {
  color: rgba(0, 0, 0, 0.72);
  text-decoration: none;
  font-size: 13px;
  line-height: 48px;
  transition: color 150ms ease;
}
.nav-links > a:hover, .has-sub > a:hover,
.nav-links > a[aria-current="page"], .has-sub > a[aria-current="page"],
.nav-aside a:hover, .nav-aside a[aria-current="page"] { color: var(--ink); }
.nav-aside a {
  display: inline-block;
  color: #fff;
  background: var(--ink);
  text-decoration: none;
  font-size: 12px;
  line-height: 1;
  padding: 8px 14px;
  border-radius: 980px;
  transition: transform 100ms ease, background 150ms ease;
}
.nav-aside a:hover, .nav-aside a[aria-current="page"] { background: var(--blue); color: #fff; }
.nav-aside a:active { transform: scale(0.96); }

.has-sub { height: 48px; }
.sub {
  display: none;
  position: absolute;
  left: 0; right: 0; top: 48px;
  padding: 30px 24px 38px;
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.25);
}
.has-sub:hover .sub, .has-sub:focus-within .sub { display: block; animation: drop 260ms var(--ease); }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.sub-inner { max-width: 980px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px 36px; }
.sub a { display: flex; flex-direction: column; gap: 4px; padding: 10px 12px; margin: 0 -12px; border-radius: 12px; text-decoration: none; line-height: 1.3; transition: background 150ms ease; }
.sub a:hover { background: rgba(0, 0, 0, 0.04); }
.sub strong { font-size: 15px; font-weight: 600; }
.sub span { font-size: 12px; color: var(--muted); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px; margin-right: -12px;
  border: 0; padding: 0; background: transparent; color: var(--ink);
  align-items: center; justify-content: center;
}
.nav-toggle svg { display: block; }
.nav-toggle .icon-close { display: none; }
body.menu-open .nav-toggle .icon-menu { display: none; }
body.menu-open .nav-toggle .icon-close { display: block; }

.drawer {
  display: none;
  position: fixed; inset: 48px 0 0 0; z-index: 90;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  padding: 18px 28px 48px; overflow: auto;
}
body.menu-open .drawer { display: block; }
body.menu-open { overflow: hidden; }
.drawer a { display: block; text-decoration: none; font-size: 24px; font-weight: 600; letter-spacing: -0.02em; padding: 12px 0; }
.drawer a.minor { font-size: 15px; font-weight: 400; color: var(--muted); padding: 5px 0 5px 2px; }
.drawer .group { padding: 8px 0 16px; border-bottom: 1px solid var(--line); }

/* ---------- 页内二级导航 ---------- */
.subnav-wrap {
  position: sticky; top: 48px; z-index: 40;
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.subnav { height: 52px; max-width: 1120px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 22px; }
.subnav-title { flex: none; text-decoration: none; font-size: 21px; font-weight: 600; letter-spacing: -0.02em; }
.subnav-links { flex: 1; min-width: 0; display: flex; justify-content: flex-end; gap: 24px; overflow-x: auto; scrollbar-width: none; }
.subnav-links::-webkit-scrollbar { display: none; }
.subnav-links a { flex: none; color: rgba(0, 0, 0, 0.56); text-decoration: none; font-size: 12px; padding: 16px 0; border-bottom: 1.5px solid transparent; transition: color 150ms ease; }
.subnav-links a.is-active, .subnav-links a:hover { color: var(--ink); }
.subnav-links a.is-active { border-color: var(--ink); }
.subnav-cta { flex: none; background: var(--blue); color: #fff; text-decoration: none; font-size: 12px; line-height: 1; padding: 8px 14px; border-radius: 980px; transition: transform 100ms ease, background 150ms ease; }
.subnav-cta:hover { background: #0077ed; }
.subnav-cta:active { transform: scale(0.96); }
main section[id], main article[id] { scroll-margin-top: 116px; }

/* ---------- 通用标题 ---------- */
.hero h1, .page-hero h1, .tile h2, .steps h2, .close h2, .film-head h2, .story h2, .solution h2 {
  font-weight: 600; letter-spacing: -0.03em; line-height: 1.06;
}
.eyebrow { font-size: 17px; font-weight: 600; color: var(--muted); }
.kicker { color: var(--muted); font-size: 14px; letter-spacing: 0.01em; }
.dek { margin-top: 14px; font-size: clamp(19px, 2.2vw, 24px); line-height: 1.4; color: var(--muted); max-width: 30em; }
.links { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 28px; margin-top: 22px; font-size: 19px; }
.links a { color: var(--blue-link); text-decoration: none; }
.links a:hover { text-decoration: underline; }
.text-link { display: inline-block; margin-top: 18px; color: var(--blue-link); text-decoration: none; font-size: 17px; }
.text-link:hover { text-decoration: underline; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 26px; margin-top: 28px;
  border: 0; border-radius: 980px; background: var(--blue); color: #fff;
  text-decoration: none; font-size: 17px;
  box-shadow: 0 10px 24px -10px rgba(0, 113, 227, 0.6);
  transition: transform 100ms ease, background 150ms ease, box-shadow 150ms ease;
}
.btn:hover { background: #0077ed; box-shadow: 0 14px 30px -10px rgba(0, 113, 227, 0.7); }
.btn:active { transform: scale(0.97); }
.btn-ghost { background: #fff; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); margin-left: 10px; }
.btn-ghost:hover { background: var(--bg2); box-shadow: inset 0 0 0 1px var(--line); }

/* ---------- 首页 Hero：白底 + 极光光晕 ---------- */
.hero {
  position: relative;
  min-height: min(100svh, 960px);
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 120px 24px 0;
  overflow: hidden;
  background: #fff;
}
.hero::before, .hero::after, .aurora i {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.75;
}
.hero::before { width: 680px; height: 680px; left: -180px; top: -140px; opacity: 0.9; background: radial-gradient(circle, #6fb8ff 0%, rgba(111, 184, 255, 0) 70%); }
.hero::after { width: 720px; height: 720px; right: -240px; top: 40px; opacity: 0.9; background: radial-gradient(circle, #d59bff 0%, rgba(213, 155, 255, 0) 70%); }
.aurora { position: absolute; inset: 0; pointer-events: none; }
.aurora i:nth-child(1) { width: 560px; height: 560px; left: 28%; top: 40%; background: radial-gradient(circle, #ffa8c9 0%, rgba(255, 168, 201, 0) 70%); animation: drift 14s ease-in-out infinite alternate; }
.aurora i:nth-child(2) { width: 480px; height: 480px; left: 56%; top: 16%; background: radial-gradient(circle, #8fe6ff 0%, rgba(143, 230, 255, 0) 70%); animation: drift 18s ease-in-out infinite alternate-reverse; }
.aurora i:nth-child(3) { width: 420px; height: 420px; left: 10%; top: 55%; background: radial-gradient(circle, #ffd58a 0%, rgba(255, 213, 138, 0) 70%); animation: drift 20s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate(0, 0); } to { transform: translate(60px, -40px); } }
.hero > * { position: relative; z-index: 1; }
.hero h1 { font-size: clamp(44px, 7.2vw, 88px); margin-top: 8px; }
.hero .dek { margin-left: auto; margin-right: auto; }
.hero-visual { flex: 1; width: 100%; display: flex; justify-content: center; align-items: flex-end; margin-top: 44px; }

/* ---------- 首页拼贴区块 ---------- */
.mosaic { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 14px; background: #fff; }
.tile {
  position: relative;
  min-height: 700px;
  padding: 64px 24px 0;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  overflow: hidden;
  background: var(--bg2);
  border-radius: var(--radius);
  color: var(--ink);
}
.tile-span { grid-column: 1 / -1; }
.tile-light { background: #fff; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05); }
.tile-tint { background: var(--grad-soft); }
.tile-blue { background: linear-gradient(180deg, #eaf3ff 0%, #f5f9ff 100%); }
.tile-teal { background: linear-gradient(180deg, #e6faf6 0%, #f3fdfb 100%); }
.tile::after {
  content: "";
  position: absolute;
  width: 70%; height: 50%;
  left: 15%; bottom: -25%;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  pointer-events: none;
  background: radial-gradient(circle, #cfe4ff 0%, rgba(207, 228, 255, 0) 70%);
}
.tile-teal::after { background: radial-gradient(circle, #b8f1e5 0%, rgba(184, 241, 229, 0) 70%); }
.tile-dark { background: linear-gradient(160deg, #0b1b3a 0%, #1b2f7a 48%, #6a2cc4 100%); color: #fff; }
.tile-dark .dek { color: rgba(255, 255, 255, 0.78); }
.tile-dark .links a { color: #8fd0ff; }
.tile-dark::after { background: radial-gradient(circle, #4f8cff 0%, rgba(79, 140, 255, 0) 70%); opacity: 0.8; }
.tile-blue::after { background: radial-gradient(circle, #9cc8ff 0%, rgba(156, 200, 255, 0) 70%); opacity: 0.8; }
.tile-tint::after { background: radial-gradient(circle, #f6c6ff 0%, rgba(246, 198, 255, 0) 70%); }
.tile > * { position: relative; z-index: 1; }
.tile h2 { font-size: clamp(36px, 5vw, 60px); }
.tile .dek { font-size: 21px; max-width: 22em; margin-left: auto; margin-right: auto; }
.tile .visual { width: 100%; flex: 1; display: flex; justify-content: center; align-items: flex-start; margin-top: 30px; }

/* ---------- 四步 ---------- */
.steps { padding: 130px 24px 90px; text-align: center; }
.steps h2 { font-size: clamp(34px, 4.4vw, 56px); }
.steps .intro { margin: 14px auto 0; max-width: 36em; color: var(--muted); }
.steps ol { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 1120px; margin: 60px auto 0; text-align: left; }
.steps li {
  background: var(--bg2);
  border-radius: 22px;
  padding: 28px 26px 30px;
  transition: transform 400ms var(--ease), box-shadow 400ms var(--ease);
}
.steps li:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.steps li span {
  display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center;
  border-radius: 12px; color: #fff; font-size: 14px; font-weight: 600;
  background: var(--grad);
}
.steps li:nth-child(2) span { background: linear-gradient(135deg, #32ade6, #5e5ce6); }
.steps li:nth-child(3) span { background: linear-gradient(135deg, #30d158, #34c7a3); }
.steps li:nth-child(4) span { background: linear-gradient(135deg, #ff9f0a, #ff375f); }
.steps h3 { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; margin: 18px 0 8px; }
.steps p { color: var(--muted); font-size: 15px; line-height: 1.55; }

/* ---------- 作品胶片 ---------- */
.film-wrap { padding: 40px 0 110px; }
.film-head { text-align: center; padding: 0 24px; }
.film-head h2 { font-size: clamp(34px, 4.4vw, 56px); }
.film-head p { margin-top: 10px; color: var(--muted); font-size: 15px; }
.film { display: flex; gap: 18px; overflow-x: auto; padding: 32px 6vw 24px; scroll-snap-type: x mandatory; scrollbar-width: none; cursor: grab; }
.film::-webkit-scrollbar { display: none; }
.film.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.film a {
  position: relative;
  flex: 0 0 min(400px, 80vw); height: 520px; scroll-snap-align: start;
  border-radius: 28px; padding: 30px; overflow: hidden;
  display: flex; flex-direction: column;
  text-decoration: none; color: #fff;
  background: #1d1d1f;
  box-shadow: var(--shadow-md);
  transition: transform 400ms var(--ease), box-shadow 400ms var(--ease);
}
.film img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease); }
.film a::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0.05) 30%, rgba(0, 0, 0, 0.72) 100%); }
.film a > * { position: relative; z-index: 1; }
.film a:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.film a:hover img { transform: scale(1.05); }
.film.is-dragging a { transform: none; }
.film em { font-style: normal; font-size: 13px; padding: 6px 12px; border-radius: 980px; background: rgba(255, 255, 255, 0.18); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); align-self: flex-start; }
.film strong { margin-top: auto; font-size: 34px; font-weight: 600; letter-spacing: -0.03em; line-height: 1.12; }
.film span { display: block; margin-top: 10px; font-size: 15px; color: rgba(255, 255, 255, 0.82); max-width: 18em; }

/* ---------- 收尾 CTA ---------- */
.close {
  position: relative; text-align: center; padding: 150px 24px; overflow: hidden;
  background: var(--grad-soft);
}
.close::before, .close::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.7; pointer-events: none;
}
.close::before { width: 520px; height: 520px; left: -140px; bottom: -200px; background: radial-gradient(circle, #a9d4ff, rgba(169, 212, 255, 0) 70%); }
.close::after { width: 520px; height: 520px; right: -140px; top: -200px; background: radial-gradient(circle, #ffc7de, rgba(255, 199, 222, 0) 70%); }
.close > * { position: relative; z-index: 1; }
.close h2 { font-size: clamp(36px, 5vw, 64px); max-width: 14em; margin: 0 auto; }
.close .dek { margin-left: auto; margin-right: auto; }
.close-phone { margin-top: 18px; }
.close-phone a { color: var(--blue-link); text-decoration: none; font-size: 21px; }
.close-phone a:hover { text-decoration: underline; }

/* ---------- 内页 ---------- */
.page-hero { position: relative; text-align: center; padding: 84px 24px 40px; overflow: hidden; }
.page-hero::before {
  content: ""; position: absolute; left: 50%; top: -260px; width: 900px; height: 520px;
  transform: translateX(-50%); border-radius: 50%; filter: blur(90px); opacity: 0.5; pointer-events: none;
  background: radial-gradient(ellipse, #d9e8ff 0%, #f2e6ff 45%, rgba(255, 255, 255, 0) 75%);
}
.page-hero > * { position: relative; }
.page-hero h1 { font-size: clamp(40px, 6vw, 72px); margin-top: 8px; }
.page-hero .dek { margin-left: auto; margin-right: auto; }

.band { background: var(--bg2); }
.feature { max-width: 1120px; margin: 0 auto; padding: 110px 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-alt .feature-visual { order: -1; }
.feature h2 { font-size: clamp(32px, 4vw, 44px); font-weight: 600; letter-spacing: -0.025em; line-height: 1.12; }
.lead, .prose p, .story-grid p, .people p, .modules p, .faq p { color: var(--muted); font-size: 17px; line-height: 1.55; }
.feature .lead { margin-top: 14px; }
.feature .lead + .lead { margin-top: 12px; }
.solution .lead { margin-top: 14px; max-width: 36em; }
.spec { margin-top: 30px; border-top: 1px solid var(--line); }
.spec div { display: grid; grid-template-columns: 72px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.spec dt { color: var(--muted); }
.spec dd { margin: 0; }

.section-intro { max-width: 760px; margin: 0 auto; padding: 80px 24px 10px; }
.section-intro h2 { font-size: clamp(32px, 4vw, 44px); font-weight: 600; letter-spacing: -0.025em; }
.section-intro p { margin-top: 12px; color: var(--muted); }
.modules { list-style: none; max-width: 860px; margin: 8px auto 0; padding: 0 24px 90px; }
.modules li { padding: 24px 0; border-top: 1px solid var(--line); }
.modules h3 { font-size: 21px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 6px; }

.solution { max-width: 1120px; margin: 0 auto; padding: 28px 24px 96px; }
.solution + .solution { border-top: 1px solid var(--line); }
.solution-head { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; padding-top: 64px; }
.solution h2 { font-size: clamp(36px, 5vw, 56px); margin-top: 8px; }

.story { max-width: 980px; margin: 0 auto; padding: 96px 24px; }
.story + .story { border-top: 1px solid var(--line); }
.story h2 { font-size: clamp(40px, 6vw, 72px); margin-top: 8px; }
.story > .dek { font-size: 21px; }
.story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 44px; }
.story-grid h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.metrics { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.metrics li { background: var(--bg2); border-radius: 20px; padding: 24px 22px; }
.metrics strong { display: block; font-size: clamp(30px, 3.4vw, 44px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.1; }
.metrics strong { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metrics span { display: block; margin-top: 6px; color: var(--muted); font-size: 14px; }
.note { margin-top: 18px; color: var(--faint); font-size: 12px; line-height: 1.5; max-width: 70em; }

.people { list-style: none; max-width: 1080px; margin: 12px auto 0; padding: 0 24px 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.people li { background: var(--bg2); border-radius: 22px; padding: 28px 26px 30px; transition: transform 400ms var(--ease), box-shadow 400ms var(--ease); }
.people li:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.people li::before { content: ""; display: block; width: 44px; height: 44px; border-radius: 14px; background: var(--grad); margin-bottom: 18px; }
.people li:nth-child(2)::before { background: linear-gradient(135deg, #32ade6, #5e5ce6); }
.people li:nth-child(3)::before { background: linear-gradient(135deg, #ff9f0a, #ff375f); }
.people li:nth-child(4)::before { background: linear-gradient(135deg, #30d158, #34c7a3); }
.people li:nth-child(5)::before { background: linear-gradient(135deg, #64d2ff, #0a84ff); }
.people li:nth-child(6)::before { background: linear-gradient(135deg, #bf5af2, #ff2d55); }
.people h3 { font-size: 21px; font-weight: 600; letter-spacing: -0.02em; }
.people .role { color: var(--muted); font-size: 14px; margin: 4px 0 10px; }

.studio { max-width: 980px; margin: 0 auto; padding: 20px 24px 110px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.studio > div { background: var(--bg2); border-radius: 22px; padding: 28px 26px; }
.studio h3 { font-size: 21px; font-weight: 600; margin-bottom: 8px; }
.studio p { color: var(--muted); }
.studio a { color: var(--blue-link); text-decoration: none; }
.studio a:hover { text-decoration: underline; }

/* ---------- 预算 ---------- */
.estimate { max-width: 1100px; margin: 0 auto; padding: 40px 24px 120px; }
.estimate-grid { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 28px; margin-top: 28px; }
.picks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pick-label { font-size: 14px; font-weight: 600; margin: 18px 0 10px; }
.pick {
  text-align: left; border: 1px solid transparent; background: #fff; border-radius: 16px; padding: 16px 16px 18px;
  transition: transform 100ms ease, border-color 150ms ease, box-shadow 150ms ease;
}
.pick small { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }
.pick[aria-pressed="true"] { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue), 0 10px 24px -14px rgba(0, 113, 227, 0.6); }
.pick:active { transform: scale(0.98); }
.est-result { background: #fff; border-radius: 22px; padding: 30px 26px; align-self: start; position: sticky; top: 116px; box-shadow: var(--shadow-md); }
.est-price { font-size: clamp(30px, 3.2vw, 40px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.15; margin-top: 8px; }
.est-time { margin-top: 8px; font-size: 19px; }

/* ---------- 咨询 ---------- */
.contact-grid { max-width: 1100px; margin: 0 auto; padding: 12px 24px 40px; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; text-align: left; }
label { display: block; font-size: 14px; font-weight: 600; margin: 16px 0 6px; }
input, select, textarea { width: 100%; border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 12px 14px; font-size: 17px; }
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; border-color: transparent; }
.form-error { color: #b00020; font-size: 13px; margin-top: 6px; }
.form-success { margin-top: 18px; padding: 16px 18px; background: var(--bg2); border-radius: 14px; }
.form-success a { color: var(--blue-link); }
.side-block { background: var(--bg2); border-radius: 22px; padding: 24px 24px 26px; }
.side-block + .side-block { margin-top: 14px; }
.side-block h2 { font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.side-block p, .side-block li { color: var(--muted); font-size: 15px; line-height: 1.5; }
.side-block ul { list-style: none; margin-top: 10px; }
.side-block li + li { margin-top: 8px; }
.side-block a { color: var(--blue-link); text-decoration: none; }
.side-block a:hover { text-decoration: underline; }
.qr { margin-top: 12px; width: 180px; height: 180px; object-fit: cover; border-radius: 14px; background: #fff; cursor: zoom-in; box-shadow: var(--shadow-md); }
.qr-dialog { border: 0; border-radius: 22px; padding: 22px 22px 28px; text-align: center; max-width: 92vw; box-shadow: var(--shadow-lg); }
.qr-dialog::backdrop { background: rgba(0, 0, 0, 0.4); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.qr-dialog img { width: min(320px, 72vw); height: auto; margin: 8px auto 0; border-radius: 12px; }
.qr-dialog p { color: var(--muted); margin-top: 12px; font-size: 15px; }
.icon-x { margin-left: auto; display: flex; width: 32px; height: 32px; border: 0; border-radius: 50%; background: var(--bg2); align-items: center; justify-content: center; font-size: 18px; }

.faq { max-width: 760px; margin: 0 auto; padding: 30px 24px 110px; }
.faq h2 { font-size: 32px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 8px; }
details { border-top: 1px solid var(--line); padding: 16px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--faint); font-weight: 400; font-size: 22px; line-height: 1; }
details[open] summary::after { content: "–"; }
.faq p { margin-top: 8px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg2); color: var(--muted); font-size: 12px; line-height: 1.45; padding: 20px 24px 30px; }
.footer-inner { max-width: 980px; margin: 0 auto; }
.footer-note { padding: 8px 0 18px; }
.footer-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px 24px; border-top: 1px solid var(--line); padding: 22px 0; }
.footer h2 { font-size: 12px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer a { color: #424245; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer-legal { border-top: 1px solid var(--line); padding-top: 14px; display: flex; justify-content: space-between; gap: 10px 18px; flex-wrap: wrap; }

/* ---------- 设备模型 ---------- */
.desk, .phone, .chat { text-align: left; color: var(--ink); }
.desk {
  width: min(880px, 94%);
  background: linear-gradient(180deg, #3a3a3c, #1d1d1f);
  border-radius: 18px; padding: 10px;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.hero .desk { margin-bottom: -40px; }
.tile .desk { margin-bottom: -80px; }
.desk-top { height: 28px; display: flex; align-items: center; gap: 6px; padding: 0 8px; }
.desk-top i { width: 9px; height: 9px; border-radius: 50%; background: #ff5f57; }
.desk-top i:nth-child(2) { background: #febc2e; }
.desk-top i:nth-child(3) { background: #28c840; }
.desk-top em { margin-left: 8px; font-style: normal; color: #a1a1a6; font-size: 12px; }
.desk-layout { display: grid; grid-template-columns: 156px 1fr; min-height: 340px; background: #fff; border-radius: 12px; overflow: hidden; }
.desk-layout nav { background: var(--bg2); padding: 16px 12px; display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.desk-layout nav b { color: var(--ink); font-size: 13px; margin-bottom: 8px; }
.desk-layout nav span { padding: 6px 10px; border-radius: 8px; }
.desk-layout nav span:first-of-type { background: #fff; color: var(--blue-link); font-weight: 500; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); }
.desk-main { padding: 16px; }
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.kpis div { background: var(--bg2); border-radius: 12px; padding: 12px 14px; position: relative; overflow: hidden; }
.kpis div::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--grad); }
.kpis div:nth-child(2)::before { background: linear-gradient(180deg, #30d158, #34c7a3); }
.kpis div:nth-child(3)::before { background: linear-gradient(180deg, #ff9f0a, #ff375f); }
.kpis small { color: var(--muted); font-size: 12px; }
.kpis strong { display: block; font-size: 24px; letter-spacing: -0.03em; margin-top: 2px; }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 96px; margin: 18px 0; }
.bars span { flex: 1; height: var(--h); border-radius: 6px 6px 3px 3px; background: linear-gradient(180deg, #0a84ff, #64d2ff); }
.bars span:nth-child(even) { background: linear-gradient(180deg, #6e5cff, #bf5af2); }
.rows { list-style: none; font-size: 13px; }
.rows li { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 8px; padding: 9px 0; border-top: 1px solid #e8e8ed; align-items: center; }
.rows em { font-style: normal; color: var(--muted); }
.rows b { font-weight: 500; color: var(--blue-link); background: #eaf3ff; padding: 2px 8px; border-radius: 980px; font-size: 12px; }

.phone {
  width: 272px;
  background: linear-gradient(180deg, #3a3a3c, #1d1d1f);
  border-radius: 40px; padding: 10px;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.14);
  margin-bottom: -90px;
}
.phone-screen { background: #fff; border-radius: 32px; min-height: 500px; padding: 14px 14px 20px; overflow: hidden; position: relative; }
.phone-screen::before { content: ""; position: absolute; left: 50%; top: 10px; width: 84px; height: 24px; transform: translateX(-50%); background: #1d1d1f; border-radius: 980px; }
.ph-status { font-size: 12px; font-weight: 600; padding-top: 4px; }
.ph-title { font-size: 28px; font-weight: 600; letter-spacing: -0.03em; margin-top: 24px; }
.ph-sub { color: var(--muted); font-size: 13px; margin: 4px 0 14px; }
.ph-card, .ph-doc, .goods article { background: var(--bg2); border-radius: 16px; padding: 12px; margin-bottom: 8px; }
.ph-card { background: linear-gradient(135deg, #eaf3ff, #f3ecff); }
.ph-card b, .ph-doc b, .goods b { display: block; font-size: 14px; }
.ph-card span, .ph-doc span, .goods span { color: var(--muted); font-size: 12px; }
.ph-doc { display: flex; align-items: center; gap: 10px; }
.ph-doc i, .avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--grad); flex: none; }
.ph-doc:nth-of-type(even) i { background: linear-gradient(135deg, #30d158, #64d2ff); }
.ph-doc em { margin-left: auto; font-style: normal; color: var(--blue-link); font-size: 12px; font-weight: 500; }
.goods { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.swatch { height: 72px; border-radius: 12px; background: linear-gradient(160deg, #0a84ff, #bf5af2); margin-bottom: 8px; }
.swatch.alt { background: linear-gradient(160deg, #ff9f0a, #ff5fa2); }

.chat {
  width: min(420px, 92%);
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-radius: 24px; padding: 18px;
  box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  margin-bottom: -48px;
}
.chat header { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.chat header::before { content: ""; width: 20px; height: 20px; border-radius: 7px; background: var(--grad); }
.bubble { border-radius: 18px; padding: 10px 14px; font-size: 14px; line-height: 1.45; margin-top: 8px; background: var(--bg2); }
.bubble.me { background: var(--blue); color: #fff; margin-left: 40px; }
.cite { margin-top: 8px; font-size: 12px; color: var(--blue-link); }

/* ---------- 图片 ---------- */
.photo { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--bg2); }
.photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease); }
.photo:hover img { transform: scale(1.03); }
.photo figcaption { position: absolute; left: 28px; right: 28px; bottom: 24px; color: #fff; font-size: 15px; text-shadow: 0 1px 12px rgba(0, 0, 0, 0.45); }
.photo.shade::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 45%, rgba(0, 0, 0, 0.5) 100%); pointer-events: none; }
.cover { max-width: 1280px; margin: 28px auto 0; padding: 0 24px; }
.cover .photo { aspect-ratio: 21 / 9; }
.feature-visual .photo, .solution-head .photo { aspect-ratio: 4 / 3; }
.story-cover { margin-top: 40px; aspect-ratio: 21 / 9; }

/* ---------- 首页附加板块 ---------- */
.section-head { text-align: center; max-width: 760px; margin: 0 auto; padding: 0 24px; }
.section-head h2 { font-size: clamp(34px, 4.4vw, 56px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.06; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 19px; }

.stats { max-width: 1120px; margin: 0 auto; padding: 84px 24px 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; text-align: center; }
.stats li { list-style: none; }
.stats strong { display: block; font-size: clamp(38px, 4.4vw, 60px); font-weight: 600; letter-spacing: -0.04em; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats span { display: block; margin-top: 10px; color: var(--muted); font-size: 14px; }

.industries { max-width: 1280px; margin: 0 auto; padding: 48px 24px 110px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.industries a { position: relative; grid-column: span 2; aspect-ratio: 4 / 5; border-radius: 26px; overflow: hidden; text-decoration: none; color: #fff; display: flex; align-items: flex-end; padding: 28px; background: #1d1d1f; box-shadow: var(--shadow-md); transition: transform 400ms var(--ease), box-shadow 400ms var(--ease); }
.industries a:nth-child(1), .industries a:nth-child(2) { grid-column: span 3; aspect-ratio: 16 / 10; }
.industries a:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.industries img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease); }
.industries a:hover img { transform: scale(1.05); }
.industries a::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 35%, rgba(0, 0, 0, 0.66) 100%); }
.industries div { position: relative; z-index: 1; }
.industries em { font-style: normal; font-size: 13px; opacity: 0.85; }
.industries strong { display: block; font-size: 30px; font-weight: 600; letter-spacing: -0.025em; margin-top: 4px; line-height: 1.1; }
.industries span { display: block; font-size: 14px; opacity: 0.85; margin-top: 8px; max-width: 24em; }

.band-photo { position: relative; min-height: 600px; margin: 0 14px; border-radius: var(--radius); overflow: hidden; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; background: #1d1d1f; }
.band-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.band-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8, 18, 40, 0.35) 0%, rgba(8, 18, 40, 0.7) 100%); }
.band-photo div { position: relative; z-index: 1; padding: 90px 24px; max-width: 820px; }
.band-photo .kicker { color: rgba(255, 255, 255, 0.75); }
.band-photo h2 { font-size: clamp(34px, 4.6vw, 60px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.06; margin-top: 8px; }
.band-photo p.dek { color: rgba(255, 255, 255, 0.85); margin-left: auto; margin-right: auto; }
.band-photo .links a { color: #fff; }

.why { max-width: 1120px; margin: 0 auto; padding: 100px 24px 110px; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 52px; }
.why-grid article { background: #fff; border-radius: 22px; padding: 30px 28px 32px; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05); transition: transform 400ms var(--ease), box-shadow 400ms var(--ease); }
.why-grid article:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.why-grid i { display: flex; width: 48px; height: 48px; border-radius: 15px; align-items: center; justify-content: center; color: #fff; background: var(--grad); }
.why-grid article:nth-child(2) i { background: linear-gradient(135deg, #32ade6, #5e5ce6); }
.why-grid article:nth-child(3) i { background: linear-gradient(135deg, #30d158, #34c7a3); }
.why-grid article:nth-child(4) i { background: linear-gradient(135deg, #ff9f0a, #ff375f); }
.why-grid article:nth-child(5) i { background: linear-gradient(135deg, #64d2ff, #0a84ff); }
.why-grid article:nth-child(6) i { background: linear-gradient(135deg, #bf5af2, #ff2d55); }
.why-grid svg { width: 22px; height: 22px; }
.why-grid h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; margin: 20px 0 8px; }
.why-grid p { color: var(--muted); font-size: 15px; line-height: 1.55; }

.team-preview { list-style: none; max-width: 1120px; margin: 0 auto; padding: 48px 24px 60px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; text-align: center; }
.team-preview img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 50%; box-shadow: var(--shadow-md); transition: transform 400ms var(--ease); }
.team-preview li:hover img { transform: translateY(-6px); }
.team-preview b { display: block; margin-top: 16px; font-size: 16px; font-weight: 600; }
.team-preview span { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.team-more { text-align: center; padding-bottom: 110px; }

.quotes { background: var(--bg2); padding: 110px 24px; }
.quotes-grid { max-width: 1120px; margin: 52px auto 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.quotes blockquote { margin: 0; background: #fff; border-radius: 22px; padding: 30px 28px; font-size: 17px; line-height: 1.6; display: flex; flex-direction: column; }
.quotes blockquote p::before { content: "“"; display: block; font-size: 56px; line-height: 0.6; margin-bottom: 14px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.quotes footer { margin-top: auto; padding-top: 22px; display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--muted); }
.quotes footer img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.quotes footer b { display: block; color: var(--ink); font-weight: 600; }

.stack { max-width: 960px; margin: 0 auto; padding: 100px 24px; text-align: center; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 32px; }
.chips span { padding: 10px 18px; border-radius: 980px; background: var(--bg2); font-size: 14px; font-weight: 500; }

.people li img { width: 76px; height: 76px; border-radius: 50%; object-fit: cover; margin-bottom: 18px; box-shadow: var(--shadow-md); }
.people li:has(img)::before { display: none; }

/* ---------- 动效 ---------- */
.rise { opacity: 0; transform: translateY(18px); animation: rise 800ms var(--ease) forwards; }
.d1 { animation-delay: 80ms; }
.d2 { animation-delay: 160ms; }
.d3 { animation-delay: 240ms; }
@keyframes rise { to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 800ms var(--ease), transform 800ms var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .nav-links, .nav-aside { display: none; }
  .nav-toggle { display: inline-flex; }
  .mosaic, .feature, .solution-head, .story-grid, .metrics, .steps ol, .people, .studio, .estimate-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .tile-span { grid-column: auto; }
  .feature-alt .feature-visual { order: 0; }
  .tile { min-height: 600px; }
  .hero { min-height: min(100svh, 820px); }
  .desk-layout { grid-template-columns: 1fr; }
  .desk-layout nav { display: none; }
  .picks { grid-template-columns: 1fr 1fr; }
  .subnav-title { font-size: 17px; }
  .est-result { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero::before, .hero::after { width: 380px; height: 380px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .industries { grid-template-columns: 1fr 1fr; }
  .industries a, .industries a:nth-child(1), .industries a:nth-child(2) { grid-column: auto; aspect-ratio: 4 / 5; }
  .why-grid, .quotes-grid { grid-template-columns: 1fr; }
  .team-preview { grid-template-columns: repeat(3, 1fr); }
  .band-photo { min-height: 520px; }
  .cover .photo, .story-cover { aspect-ratio: 16 / 10; }
}
@media (max-width: 640px) {
  .people, .picks, .footer-grid, .metrics, .story-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 96px; }
  .hero h1 { font-size: 42px; }
  .mosaic { padding: 10px; gap: 10px; }
  .tile { border-radius: 22px; padding-top: 48px; }
  .close { padding: 100px 20px; }
  .feature, .story, .steps { padding-left: 20px; padding-right: 20px; }
  .desk { width: 100%; }
  .desk-main { padding: 12px; }
  .kpis { gap: 6px; }
  .kpis div { padding: 10px; }
  .kpis strong { font-size: 20px; }
  .rows li { grid-template-columns: 40px minmax(0, 1fr) auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise, .reveal { animation: none; opacity: 1; transform: none; transition: none; }
  .aurora i { animation: none; }
  .film a, .btn, .pick, .steps li, .people li, .photo img, .industries a, .industries img, .why-grid article, .team-preview img { transition: none; }
  .film a:hover, .steps li:hover, .people li:hover, .industries a:hover, .why-grid article:hover { transform: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav, .sub, .drawer, .subnav-wrap, .chat { background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; }
}