/* ============================================================
   水梦苍穹 · SHUI MENG CANG QIONG
   主样式：白天 / 夜间双主题 + 响应式
   ============================================================ */

:root {
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --max-w: 1200px;
  --radius: 20px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 白天 ---------- */
:root, [data-theme="light"] {
  --bg: #f6f7fa;
  --bg-soft: #eef1f6;
  --surface: rgba(255, 255, 255, .66);
  --surface-solid: #ffffff;
  --border: rgba(16, 38, 72, .10);
  --border-strong: rgba(16, 38, 72, .18);
  --text: #131f33;
  --text-dim: #5d6c85;
  --text-faint: #8b98ae;
  --primary: #1667e0;
  --primary-deep: #0a4bad;
  --accent: #e0245e;
  --grad-text: linear-gradient(110deg, #0d5bd1 0%, #1ba7e8 52%, #0a4bad 100%);
  --orb-1: rgba(27, 167, 232, .26);
  --orb-2: rgba(22, 103, 224, .18);
  --orb-3: rgba(224, 36, 94, .10);
  --shadow: 0 24px 60px -28px rgba(12, 40, 90, .28);
  --header-bg: rgba(250, 251, 253, .82);
  --line: rgba(16, 38, 72, .08);
  --veil: rgba(250, 252, 255, .04);
}

/* ---------- 夜间 ---------- */
[data-theme="dark"] {
  --bg: #060a12;
  --bg-soft: #0a101c;
  --surface: rgba(18, 27, 47, .58);
  --surface-solid: #0d1524;
  --border: rgba(140, 180, 255, .13);
  --border-strong: rgba(140, 180, 255, .26);
  --text: #e9eefb;
  --text-dim: #94a4c2;
  --text-faint: #6b7c9c;
  --primary: #4aa3ff;
  --primary-deep: #1f7ae0;
  --accent: #ff5c8a;
  --grad-text: linear-gradient(110deg, #7cc0ff 0%, #3ed3ff 50%, #a98cff 100%);
  --orb-1: rgba(31, 122, 224, .28);
  --orb-2: rgba(84, 58, 210, .22);
  --orb-3: rgba(255, 92, 138, .09);
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, .75);
  --header-bg: rgba(7, 11, 20, .76);
  --line: rgba(140, 180, 255, .10);
  --veil: rgba(4, 8, 16, .04);
}

/* ---------- 导航遮罩：整页虚化 ---------- */
.nav-veil {
  position: fixed; inset: 0; z-index: 98;
  opacity: 0; visibility: hidden; pointer-events: none;
  background: var(--veil);
  backdrop-filter: blur(3px) saturate(1.02);
  -webkit-backdrop-filter: blur(3px) saturate(1.02);
  transition: opacity .35s var(--ease), visibility .35s;
}
.nav-veil.open { opacity: 1; visibility: visible; }
.menu-open .site-header {
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: clip;
  transition: background .5s var(--ease), color .5s var(--ease);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.container { width: min(var(--max-w), 90%); margin: 0 auto; }
::selection { background: var(--primary); color: #fff; }

/* ---------- 背景 ---------- */
.bg-aurora {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(1100px 720px at 88% -12%, var(--orb-1), transparent 62%),
    radial-gradient(900px 620px at -12% 26%, var(--orb-2), transparent 62%),
    radial-gradient(760px 520px at 62% 112%, var(--orb-3), transparent 62%),
    var(--bg);
  transition: background .5s var(--ease);
}
.orb {
  position: absolute; border-radius: 50%; filter: blur(100px); opacity: .75;
  animation: drift 22s ease-in-out infinite alternate;
}
.orb-1 { width: 460px; height: 460px; left: 6%;  top: 8%;  background: var(--orb-1); }
.orb-2 { width: 560px; height: 560px; right: -8%; top: 34%; background: var(--orb-2); animation-delay: -7s; }
.orb-3 { width: 400px; height: 400px; left: 28%; bottom: -14%; background: var(--orb-3); animation-delay: -14s; }
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(70px, -60px) scale(1.16); }
}
.grid-lines {
  position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 10%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 10%, transparent 75%);
}
.grain {
  position: absolute; inset: 0; opacity: .035; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .4s var(--ease), box-shadow .4s var(--ease), backdrop-filter .4s;
}
.site-header.scrolled {
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow: 0 1px 0 var(--border), 0 12px 34px -24px rgba(0, 0, 0, .45);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 84px; gap: 28px; }

.brand { flex-shrink: 0; }
.brand-logo { height: 40px; width: auto; }
.logo-dark { display: none; }
[data-theme="dark"] .logo-dark { display: block; }
[data-theme="dark"] .logo-light { display: none; }

.nav-links { display: flex; gap: 4px; }
.nav-links a {
  position: relative; display: block; padding: 9px 15px;
  font-size: 14.5px; font-weight: 500; color: var(--text-dim);
  border-radius: 9px; transition: color .3s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px; height: 1.5px;
  background: var(--grad-text); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 11px;
  background: var(--surface); color: var(--text); cursor: pointer;
  transition: transform .3s var(--ease), border-color .3s, color .3s;
  backdrop-filter: blur(10px);
}
.icon-btn:hover { transform: translateY(-2px); border-color: var(--primary); color: var(--primary); }
.icon-btn:active { transform: scale(.94); }

.menu-btn {
  display: none; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
}
.menu-btn span {
  display: block; width: 16px; height: 1.6px; border-radius: 2px;
  background: var(--text);
  transition: transform .3s var(--ease), opacity .3s, width .3s var(--ease);
}
.menu-btn.open span:nth-child(1) { transform: translateY(0); }
.menu-btn.open span:nth-child(2) { width: 11px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 32px; border-radius: 999px; font-size: 15px; font-weight: 600;
  letter-spacing: .06em; cursor: pointer; border: none;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.btn-sm { padding: 10px 24px; font-size: 14px; }
.btn-primary {
  color: #fff; background: linear-gradient(115deg, var(--primary), var(--primary-deep));
  box-shadow: 0 12px 30px -12px var(--primary);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -14px var(--primary); }
.btn-ghost {
  color: var(--text); background: var(--surface); border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--primary); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center;
  padding: 132px 0 96px;
}
.hero-ornament { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: -1; }
.ring {
  position: absolute; left: 50%; top: 48%; transform: translate(-50%, -50%);
  border: 1px solid var(--border); border-radius: 50%;
}
.ring-1 { width: 56vmin; height: 56vmin; opacity: .55; }
.ring-2 { width: 82vmin; height: 82vmin; opacity: .32; border-style: dashed; animation: spin 80s linear infinite; }
.ring-3 { width: 108vmin; height: 108vmin; opacity: .18; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.hero-inner { text-align: center; width: min(920px, 92%); margin: 0 auto; }
.hero-eyebrow {
  display: inline-block; font-size: 11.5px; letter-spacing: .42em; text-transform: uppercase;
  color: var(--text-dim); padding: 9px 24px 9px 27px; border: 1px solid var(--border);
  border-radius: 999px; background: var(--surface); backdrop-filter: blur(10px);
  margin-bottom: 40px;
}
.hero-title {
  font-size: clamp(34px, 5.2vw, 64px); line-height: 1.24; font-weight: 800;
  letter-spacing: .04em;
}
.hero-title .line { display: block; }
.hero-rule { display: flex; justify-content: center; margin: 34px 0 30px; }
.hero-rule i {
  width: 72px; height: 1px; background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub {
  font-size: clamp(14px, 1.5vw, 16px); color: var(--text-dim);
  max-width: 580px; margin: 0 auto 38px; line-height: 1.95;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-meta {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-top: 64px; font-size: 11.5px; letter-spacing: .3em; color: var(--text-faint);
}
.hero-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--primary); }

.scroll-hint {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  width: 22px; height: 40px; border: 1.5px solid var(--border-strong); border-radius: 999px;
  display: flex; justify-content: center; padding-top: 7px; opacity: .7;
}
.scroll-hint span {
  width: 3px; height: 7px; border-radius: 3px; background: var(--primary);
  animation: scrollDown 1.9s ease-in-out infinite;
}
@keyframes scrollDown {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(13px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- 词带 ---------- */
.marquee {
  overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: var(--surface); backdrop-filter: blur(8px);
  padding: 16px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex; align-items: center; gap: 34px; width: max-content;
  animation: marquee 34s linear infinite;
  font-size: 13px; letter-spacing: .32em; color: var(--text-faint);
}
.marquee-track b { color: var(--primary); font-size: 8px; }
@keyframes marquee { to { transform: translateX(-33.333%); } }

/* ---------- 数据 ---------- */
.stats { padding: 52px 0 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stat {
  text-align: center; padding: 38px 14px; position: relative;
}
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 28%; bottom: 28%; width: 1px;
  background: var(--border);
}
.stat strong { font-size: clamp(28px, 3vw, 38px); font-weight: 700; letter-spacing: -.02em; }
.stat em { font-style: normal; font-size: 18px; color: var(--primary); font-weight: 600; margin-left: 3px; }
.stat span { display: block; margin-top: 4px; font-size: 13px; color: var(--text-dim); letter-spacing: .18em; }

/* ---------- Section ---------- */
.section { padding: 68px 0; }
.section-alt { background: var(--bg-soft); transition: background .5s var(--ease); }
.section-eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: 13px; letter-spacing: .26em; color: var(--text-dim);
  font-weight: 500; margin-bottom: 20px;
}
.section-eyebrow span {
  font-family: var(--font-serif); font-size: 13px; color: var(--primary);
  letter-spacing: .1em; padding-right: 12px; border-right: 1px solid var(--border-strong);
}
.section h2 {
  font-size: clamp(25px, 3vw, 36px); line-height: 1.42; font-weight: 800;
  letter-spacing: .02em;
}
.section-desc { margin-top: 16px; color: var(--text-dim); font-size: 15px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.section-head .section-eyebrow { justify-content: center; }
.section-head .section-desc { max-width: 560px; margin-left: auto; margin-right: auto; }

/* ---------- 关于 ---------- */
.split { display: grid; grid-template-columns: 1.08fr .92fr; gap: 84px; align-items: center; }
.split-text p { color: var(--text-dim); margin-top: 20px; font-size: 15.5px; }
.split-text h2 { margin-bottom: 6px; }
.check-list { margin-top: 34px; }
.check-list li {
  position: relative; padding: 14px 0 14px 34px; font-size: 15px; font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.check-list li:last-child { border-bottom: none; }
.check-list li::before {
  content: ""; position: absolute; left: 2px; top: 23px;
  width: 12px; height: 1px; background: var(--primary);
}
.split-visual { position: relative; }
.glass-card {
  position: relative; padding: 64px 46px 56px; border-radius: 26px;
  background: var(--surface); border: 1px solid var(--border);
  backdrop-filter: blur(20px); box-shadow: var(--shadow); overflow: hidden;
}
.glass-card::after {
  content: ""; position: absolute; inset: 12px; border: 1px solid var(--border);
  border-radius: 18px; pointer-events: none;
}
.glass-glow {
  position: absolute; width: 260px; height: 260px; border-radius: 50%;
  top: -90px; right: -90px; filter: blur(70px); background: var(--orb-1);
}
.seal {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 8px;
  font-family: var(--font-serif); font-size: 24px; color: #fff;
  background: linear-gradient(140deg, var(--primary), var(--primary-deep));
  box-shadow: 0 10px 24px -12px var(--primary); margin-bottom: 30px;
}
.glass-quote {
  font-family: var(--font-serif); font-size: clamp(19px, 2vw, 24px);
  line-height: 1.9; font-weight: 700; letter-spacing: .05em;
}
.glass-sign { margin-top: 26px; color: var(--text-faint); font-size: 13px; letter-spacing: .14em; }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.card {
  position: relative; padding: 42px 30px 38px; background: var(--bg-soft);
  transition: background .4s var(--ease);
}
.section-alt .card { background: var(--bg-soft); }
.card:hover { background: var(--surface-solid); }
[data-theme="dark"] .card:hover { background: rgba(24, 36, 60, .9); }
.card-no {
  position: absolute; top: 26px; right: 26px;
  font-family: var(--font-serif); font-size: 15px; color: var(--text-faint);
  transition: color .4s;
}
.card:hover .card-no { color: var(--primary); }
.card-icon {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  color: var(--primary); margin-bottom: 26px;
  border: 1px solid var(--border-strong); background: var(--surface);
  transition: color .4s, transform .4s var(--ease), border-color .4s;
}
.card:hover .card-icon { color: #fff; border-color: transparent; transform: translateY(-3px);
  background: linear-gradient(135deg, var(--primary), var(--primary-deep)); }
.card h3 { font-size: 18.5px; margin-bottom: 12px; letter-spacing: .04em; }
.card p { font-size: 14px; color: var(--text-dim); line-height: 1.9; }

/* ---------- 流程 ---------- */
.process {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative;
}
.process::before {
  content: ""; position: absolute; left: 0; right: 0; top: 27px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong) 8%, var(--border-strong) 92%, transparent);
}
.step { position: relative; padding-top: 68px; }
.step-no {
  position: absolute; top: 0; left: 0;
  width: 54px; height: 54px; display: grid; place-items: center; border-radius: 50%;
  font-family: var(--font-serif); font-size: 17px; color: var(--text);
  background: var(--bg); border: 1px solid var(--border-strong);
  transition: color .4s, border-color .4s, background .4s, transform .4s var(--ease);
}
.step:hover .step-no {
  color: #fff; border-color: transparent; transform: translateY(-4px);
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
}
.step h3 { font-size: 19px; margin-bottom: 10px; letter-spacing: .12em; }
.step p { font-size: 14px; color: var(--text-dim); line-height: 1.9; }

/* ---------- CTA ---------- */
.cta-panel {
  position: relative; text-align: center; padding: 76px 44px; border-radius: 30px;
  overflow: hidden; border: 1px solid var(--border);
  background:
    radial-gradient(620px 320px at 18% -6%, var(--orb-1), transparent 70%),
    radial-gradient(620px 320px at 88% 106%, var(--orb-2), transparent 70%),
    var(--surface);
  backdrop-filter: blur(18px); box-shadow: var(--shadow);
}
.cta-panel .section-eyebrow { justify-content: center; }
.cta-panel h2 { font-size: clamp(25px, 3.2vw, 38px); line-height: 1.5; letter-spacing: .02em; }
.cta-panel > p:not(.section-eyebrow) { margin: 20px auto 34px; color: var(--text-dim); font-size: 14px; max-width: 520px; }
.cta-glow {
  position: absolute; width: 340px; height: 340px; left: 50%; top: -160px;
  transform: translateX(-50%); border-radius: 50%; filter: blur(80px);
  background: var(--orb-1); pointer-events: none;
}
.cta-actions { display: flex; justify-content: center; }
.cta-note { margin-top: 26px !important; font-size: 12.5px !important; letter-spacing: .22em; color: var(--text-faint) !important; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border); background: var(--bg-soft);
  transition: background .5s var(--ease); padding: 52px 0 30px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 40px; flex-wrap: wrap; padding-bottom: 44px;
}
.footer-logo { height: 34px; width: auto; }
.footer-slogan { margin-top: 18px; font-size: 12px; letter-spacing: .3em; color: var(--text-faint); }
.footer-nav { display: flex; gap: 34px; flex-wrap: wrap; }
.footer-nav a { font-size: 14px; color: var(--text-dim); transition: color .3s; }
.footer-nav a:hover { color: var(--primary); }

.footer-beian {
  border-top: 1px solid var(--border); padding-top: 26px;
  text-align: center; color: var(--text-faint); font-size: 13px;
}
.beian-line { margin: 7px 0; }
.beian-line a { color: var(--text-faint); transition: color .3s; }
.beian-line a:hover { color: var(--primary); }
.beian-gov { display: inline-flex; align-items: center; gap: 7px; }
.beian-icon { width: 18px; height: auto; display: inline-block; }

/* ---------- 动效 ---------- */
.reveal {
  opacity: 0; transform: translate3d(0, 54px, 0) scale(.985);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  transition-delay: var(--rd, 0s);
  will-change: opacity, transform;
}
.reveal.visible { opacity: 1; transform: none; will-change: auto; }

/* 顶部滚动进度 */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 200;
  width: 0; height: 2px; background: var(--grad-text);
  box-shadow: 0 0 12px color-mix(in srgb, var(--primary) 55%, transparent);
  transition: width .08s linear;
}

/* 首屏渐显 */
@keyframes pageIn { from { opacity: 0; } to { opacity: 1; } }
body { animation: pageIn .7s var(--ease) both; }

/* 渐变文字缓慢流动 */
.grad-text {
  background-size: 190% 100%;
  animation: gradShift 9s ease-in-out infinite alternate;
}
@keyframes gradShift {
  from { background-position: 0% 50%; }
  to   { background-position: 100% 50%; }
}

/* 按钮扫光 */
.btn { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ""; position: absolute; top: 0; left: -140%; width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .34), transparent);
  transform: skewX(-18deg); transition: left .65s var(--ease); pointer-events: none;
}
.btn-primary:hover::after { left: 140%; }

/* 卡片光晕 */
.card { overflow: hidden; }
.card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(125deg, transparent 32%, color-mix(in srgb, var(--primary) 9%, transparent) 52%, transparent 72%);
  opacity: 0; transition: opacity .55s var(--ease);
}
.card:hover::after { opacity: 1; }

/* 词带悬停暂停 */
.marquee:hover .marquee-track { animation-play-state: paused; }

/* 品牌 logo 微动 */
.brand .brand-logo { transition: transform .45s var(--ease); }
.brand:hover .brand-logo { transform: scale(1.035); }

/* 案例与手记悬停 */
.work-index { transition: color .35s; }
.work:hover .work-index { color: var(--primary); }
.post { transition: background .4s var(--ease), transform .45s var(--ease); }
.post:hover { transform: translateY(-4px); }
.post:hover h3 { color: var(--primary); }
.post h3 { transition: color .35s; }

/* 问答展开动画 */
@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}
.faq-item[open] p { animation: faqIn .4s var(--ease) both; }

/* 滑块按钮按压 */
.slider-btn:active { transform: scale(.9); }

/* ---------- 强化动效 ---------- */
/* 首屏标题逐行揭示 */
.hero-title .line { display: block; overflow: hidden; padding-bottom: .08em; }
.hero-title .line-in { display: block; transform: translateY(112%); transition: transform 1.05s var(--ease); }
.hero-title .line:nth-child(2) .line-in { transition-delay: .14s; }
.hero-title.visible .line-in { transform: none; }
.hero-title.visible { transition: transform .35s ease-out, opacity .85s var(--ease); will-change: transform; }

/* 首屏分隔线生长 */
.hero-rule i { transform: scaleX(0); transition: transform .95s var(--ease) .35s; }
.hero-title.visible ~ .hero-rule i { transform: scaleX(1); }

/* 漂浮水珠 */
.hero-drops { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: -1; }
.hero-drops span {
  position: absolute; bottom: -8%; width: 5px; height: 5px; border-radius: 50%;
  background: color-mix(in srgb, var(--primary) 32%, transparent);
  filter: blur(.5px); opacity: 0; animation: dropRise 18s linear infinite;
}
.hero-drops span:nth-child(1) { left: 9%;  animation-delay: 0s;   animation-duration: 19s; }
.hero-drops span:nth-child(2) { left: 21%; animation-delay: 3.4s; width: 7px; height: 7px; }
.hero-drops span:nth-child(3) { left: 33%; animation-delay: 7.1s; animation-duration: 22s; }
.hero-drops span:nth-child(4) { left: 47%; animation-delay: 1.6s; width: 4px; height: 4px; }
.hero-drops span:nth-child(5) { left: 58%; animation-delay: 9.2s; animation-duration: 20s; }
.hero-drops span:nth-child(6) { left: 69%; animation-delay: 5.3s; width: 8px; height: 8px; }
.hero-drops span:nth-child(7) { left: 81%; animation-delay: 11.4s; animation-duration: 17s; }
.hero-drops span:nth-child(8) { left: 92%; animation-delay: 2.2s; width: 4px; height: 4px; }
@keyframes dropRise {
  0%   { transform: translate(0, 0) scale(.6); opacity: 0; }
  12%  { opacity: .75; }
  80%  { opacity: .35; }
  100% { transform: translate(34px, -92vh) scale(1.1); opacity: 0; }
}

/* 区块标题渐变短线 */
.section-head h2 { padding-bottom: 16px; }
.section-head h2::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 46px; height: 2px;
  border-radius: 2px; background: var(--grad-text);
  transform: translateX(-50%) scaleX(0); transform-origin: center;
  transition: transform .85s var(--ease) .25s;
}
.section-head h2 { position: relative; }
.section-head.visible h2::after { transform: translateX(-50%) scaleX(1); }

/* 流程进度线绘制 + 序号弹出 */
.process::before {
  transform: scaleX(0); transform-origin: left;
  transition: transform 1.25s var(--ease) .2s;
}
.process.visible::before { transform: scaleX(1); }
.process.visible .step-no { animation: stepPop .6s var(--ease) both; }
.process.visible .step:nth-child(2) .step-no { animation-delay: .14s; }
.process.visible .step:nth-child(3) .step-no { animation-delay: .28s; }
.process.visible .step:nth-child(4) .step-no { animation-delay: .42s; }
@keyframes stepPop {
  from { opacity: .2; transform: translateY(8px) scale(.88); }
  to   { opacity: 1; transform: none; }
}

/* 间奏圆环呼吸 */
.interlude-rings span:nth-child(1),
.interlude-rings span:nth-child(2) { animation: ringPulse 8s ease-in-out infinite; }
.interlude-rings span:nth-child(2) { animation-delay: -2.5s; }
@keyframes ringPulse {
  0%, 100% { opacity: .22; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: .5;  transform: translate(-50%, -50%) scale(1.035); }
}

/* 鼠标光晕 */
.cursor-glow {
  position: fixed; left: 0; top: 0; width: 420px; height: 420px; border-radius: 50%;
  pointer-events: none; z-index: -1; opacity: 0; will-change: transform;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 14%, transparent) 0%, transparent 62%);
  filter: blur(18px);
  transition: opacity .6s var(--ease);
}
body.cursor-ready .cursor-glow { opacity: 1; }
body.menu-open .cursor-glow { opacity: 0; }

/* 卡片 3D 跟随 */
.cards { perspective: 1000px; }
.card { transition: transform .22s var(--ease), background .4s var(--ease); }

/* 翻页自动进度 */
.slider-progress {
  position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: var(--grad-text); opacity: .9;
  transform: scaleX(0); transform-origin: left;
}
.slider-progress.run { animation: slideProgress 6.5s linear forwards; }
.theme-slider:hover .slider-progress { animation-play-state: paused; }
@keyframes slideProgress { to { transform: scaleX(1); } }

/* 页脚渐变流光 */
.site-footer { position: relative; }
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  background-size: 200% 100%;
  animation: footerLine 7s linear infinite; opacity: .5;
}
@keyframes footerLine {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

/* 细节悬停 */
.step h3 { transition: color .3s; }
.step:hover h3 { color: var(--primary); }
.faq-item summary { transition: color .3s, padding-left .35s var(--ease); }
.faq-item summary:hover { padding-left: 6px; }
.btn:active { transform: translateY(-1px) scale(.985); }
.work { transition: padding .45s var(--ease), background .45s var(--ease), transform .45s var(--ease); }
.work:hover { transform: translateX(3px); }

/* ---------- 第二轮强化动效 ---------- */
/* 加载动画 */
.preloader {
  position: fixed; inset: 0; z-index: 9500; display: grid; place-items: center;
  background: var(--bg);
  animation: preloaderOut .7s var(--ease) 1.15s forwards;
}
.preloader-inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.preloader-logo { height: 40px; width: auto; animation: logoFloat 1.8s ease-in-out infinite; }
.preloader-line { width: 132px; height: 1px; background: var(--border); overflow: hidden; }
.preloader-line i {
  display: block; height: 100%; width: 0; background: var(--grad-text);
  animation: preloadBar 1.05s var(--ease) forwards;
}
@keyframes preloadBar { to { width: 100%; } }
@keyframes preloaderOut { to { opacity: 0; visibility: hidden; } }
@keyframes logoFloat {
  0%, 100% { transform: translateY(0); opacity: .9; }
  50% { transform: translateY(-4px); opacity: 1; }
}

/* 全站气泡 */
.bubbles { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bubbles span {
  position: absolute; bottom: -6%; width: 10px; height: 10px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
  background: radial-gradient(circle at 32% 30%, color-mix(in srgb, var(--primary) 26%, transparent), transparent 70%);
  animation: bubbleUp 26s linear infinite;
}
.bubbles span:nth-child(1)  { left: 4%;  width: 8px;  height: 8px;  animation-delay: 0s;   animation-duration: 24s; }
.bubbles span:nth-child(2)  { left: 13%; width: 14px; height: 14px; animation-delay: 5s;   }
.bubbles span:nth-child(3)  { left: 22%; width: 6px;  height: 6px;  animation-delay: 11s;  animation-duration: 30s; }
.bubbles span:nth-child(4)  { left: 31%; width: 11px; height: 11px; animation-delay: 2s;   animation-duration: 22s; }
.bubbles span:nth-child(5)  { left: 42%; width: 7px;  height: 7px;  animation-delay: 15s;  }
.bubbles span:nth-child(6)  { left: 51%; width: 16px; height: 16px; animation-delay: 7s;   animation-duration: 32s; }
.bubbles span:nth-child(7)  { left: 61%; width: 5px;  height: 5px;  animation-delay: 19s;  }
.bubbles span:nth-child(8)  { left: 70%; width: 12px; height: 12px; animation-delay: 9s;   animation-duration: 25s; }
.bubbles span:nth-child(9)  { left: 79%; width: 8px;  height: 8px;  animation-delay: 1.5s; animation-duration: 28s; }
.bubbles span:nth-child(10) { left: 87%; width: 15px; height: 15px; animation-delay: 13s;  }
.bubbles span:nth-child(11) { left: 93%; width: 6px;  height: 6px;  animation-delay: 21s;  animation-duration: 29s; }
.bubbles span:nth-child(12) { left: 38%; width: 9px;  height: 9px;  animation-delay: 24s;  animation-duration: 34s; }
@keyframes bubbleUp {
  0%   { transform: translate(0, 0) scale(.7); opacity: 0; }
  12%  { opacity: .65; }
  85%  { opacity: .3; }
  100% { transform: translate(40px, -106vh) scale(1.15); opacity: 0; }
}

/* 首屏水字水印 */
.hero-watermark {
  position: absolute; right: -3%; top: 4%;
  font-family: var(--font-serif); font-size: min(54vmin, 600px); line-height: 1;
  font-weight: 700; color: transparent;
  -webkit-text-stroke: 1px var(--border-strong);
  opacity: .45; transform: rotate(-6deg);
  animation: watermarkFloat 16s ease-in-out infinite;
}
@keyframes watermarkFloat {
  0%, 100% { transform: rotate(-6deg) translateY(0) scale(1); opacity: .3; }
  50%      { transform: rotate(-3deg) translateY(-18px) scale(1.02); opacity: .5; }
}

/* 首屏光晕与浮动水波 */
.hero-inner { position: relative; }
.hero-inner::before {
  content: ""; position: absolute; left: 50%; top: 42%;
  width: min(560px, 90vw); height: min(560px, 90vw);
  transform: translate(-50%, -50%); border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 13%, transparent), transparent 65%);
  filter: blur(28px); z-index: -1; pointer-events: none;
  animation: haloPulse 9s ease-in-out infinite;
}
@keyframes haloPulse {
  0%, 100% { opacity: .45; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: .85; transform: translate(-50%, -50%) scale(1.06); }
}
.hero-wave {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 108px;
  z-index: 0; pointer-events: none; overflow: hidden;
}
.hero-wave svg { display: block; width: 100%; height: 100%; }
.wave-a { fill: color-mix(in srgb, var(--primary) 9%, transparent); animation: waveShift 13s ease-in-out infinite; }
.wave-b { fill: color-mix(in srgb, var(--primary) 5%, transparent); animation: waveShift 9s ease-in-out infinite reverse; }
@keyframes waveShift {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(-26px); }
}

/* 滚动提示脉冲 */
.scroll-hint::after {
  content: ""; position: absolute; inset: -6px; border-radius: 999px;
  border: 1px solid var(--border-strong);
  animation: hintPulse 2.6s ease-out infinite;
}
@keyframes hintPulse {
  0%   { transform: scale(.92); opacity: .55; }
  70%  { transform: scale(1.22); opacity: 0; }
  100% { transform: scale(1.22); opacity: 0; }
}

/* 整卡流光边框 */
.cta-panel::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(115deg, transparent 28%, color-mix(in srgb, var(--primary) 60%, transparent) 50%, transparent 72%) border-box;
  background-size: 240% 100%;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  animation: borderFlow 9s linear infinite;
  pointer-events: none;
}
@keyframes borderFlow {
  from { background-position: 0% 0; }
  to   { background-position: 240% 0; }
}

/* 导航随滚动收窄 */
.site-header .nav { transition: height .4s var(--ease); }
.site-header.scrolled .nav { height: 68px; }
.site-header .brand-logo { transition: height .4s var(--ease), transform .45s var(--ease); }
.site-header.scrolled .brand-logo { height: 34px; }

/* 卡片光标聚光 */
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--primary) 13%, transparent), transparent 62%);
  transition: opacity .45s var(--ease);
}
.card:hover::before { opacity: 1; }

/* 标题逐字 */
.char {
  display: inline-block; opacity: 0;
  transform: translateY(.55em) rotate(2.5deg);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  transition-delay: var(--ci, 0s);
}
.reveal.visible .char { opacity: 1; transform: none; }

/* 翻页内容分层进入 */
.slide.is-active .slide-head { animation: slideItemIn .6s var(--ease) both; }
.slide.is-active .glass-quote { animation: slideItemIn .7s var(--ease) .06s both; }
.slide.is-active .slide-desc { animation: slideItemIn .7s var(--ease) .14s both; }
.slide.is-active .glass-sign { animation: slideItemIn .7s var(--ease) .2s both; }
@keyframes slideItemIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* 间奏逐行 */
.interlude-text span {
  display: block; opacity: .18; transform: translateY(12px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.interlude-inner.visible .interlude-text span { opacity: 1; transform: none; }
.interlude-inner.visible .interlude-text span:nth-child(2) { transition-delay: .16s; }
.interlude-inner.visible .interlude-text span:nth-child(3) { transition-delay: .32s; }

/* 数字弹出 */
.stat.reveal.visible strong { animation: statPop .8s var(--ease) .15s both; }
@keyframes statPop {
  from { opacity: .3; transform: translateY(10px) scale(.92); }
  to   { opacity: 1; transform: none; }
}

/* 联系面板光斑呼吸 */
.cta-glow { animation: ctaBreathe 7s ease-in-out infinite; }
@keyframes ctaBreathe {
  0%, 100% { opacity: .5; transform: translateX(-50%) scale(1); }
  50%      { opacity: .9; transform: translateX(-50%) scale(1.16); }
}

/* 导航悬停发光 */
.nav-links a { transition: color .3s, text-shadow .35s; }
.nav-links a:hover { text-shadow: 0 0 14px color-mix(in srgb, var(--primary) 45%, transparent); }

/* 页头随滚动自动隐藏 */
.site-header { top: 0; transition: top .45s var(--ease), background .4s var(--ease), box-shadow .4s var(--ease), backdrop-filter .4s; }
.site-header.auto-hide { top: -104px; }

/* 分栏左右错向进入 */
.split-text.reveal { transform: translate3d(-46px, 34px, 0) scale(.985); }
.split-visual.reveal { transform: translate3d(46px, 34px, 0) scale(.985); }
.split-text.reveal.visible, .split-visual.reveal.visible { transform: none; }

/* 问答逐条浮现 */
@keyframes rowIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}
.faq.reveal.visible .faq-item { animation: rowIn .55s var(--ease) both; }
.faq.reveal.visible .faq-item:nth-child(1) { animation-delay: .04s; }
.faq.reveal.visible .faq-item:nth-child(2) { animation-delay: .12s; }
.faq.reveal.visible .faq-item:nth-child(3) { animation-delay: .20s; }
.faq.reveal.visible .faq-item:nth-child(4) { animation-delay: .28s; }
.faq.reveal.visible .faq-item:nth-child(5) { animation-delay: .36s; }

/* 联系信息依次出现 */
.cta-panel.visible .contact-item { animation: rowIn .55s var(--ease) both; }
.cta-panel.visible .contact-item:nth-child(1) { animation-delay: .10s; }
.cta-panel.visible .contact-item:nth-child(2) { animation-delay: .18s; }
.cta-panel.visible .contact-item:nth-child(3) { animation-delay: .26s; }
.cta-panel.visible .contact-item:nth-child(4) { animation-delay: .34s; }

/* 数据项悬停 */
.stat { transition: transform .35s var(--ease); }
.stat:hover { transform: translateY(-4px); }

/* 翻页卡流光描边 */
.theme-slider::before {
  content: ""; position: absolute; inset: 0; border-radius: 26px; padding: 1px;
  background: linear-gradient(120deg, transparent 30%, color-mix(in srgb, var(--primary) 55%, transparent) 50%, transparent 70%) border-box;
  background-size: 220% 100%;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  animation: borderFlow 8s linear infinite;
  pointer-events: none; z-index: 3;
}

/* 右侧章节进度 */
.section-rail {
  position: fixed; right: 24px; top: 50%; transform: translateY(-50%);
  z-index: 70; display: flex; flex-direction: column; gap: 15px;
  align-items: flex-end;
}
.section-rail a {
  position: relative; display: flex; align-items: center; justify-content: flex-end;
  padding: 2px 0;
}
.section-rail i {
  display: block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--border-strong);
  transition: width .4s var(--ease), height .4s var(--ease),
              background .4s, box-shadow .4s, transform .4s var(--ease);
}
.section-rail a:hover i { background: var(--text-dim); transform: scale(1.25); }
.section-rail a.active i {
  width: 8px; height: 22px; border-radius: 4px; background: var(--primary);
  box-shadow: 0 0 14px color-mix(in srgb, var(--primary) 55%, transparent);
}
.rail-label {
  position: absolute; right: 22px; white-space: nowrap;
  font-size: 11px; letter-spacing: .12em; color: var(--text-dim);
  background: var(--surface); border: 1px solid var(--border);
  padding: 4px 9px; border-radius: 7px;
  opacity: 0; transform: translateX(8px);
  transition: opacity .3s, transform .3s var(--ease);
  backdrop-filter: blur(10px); pointer-events: none;
}
.section-rail a:hover .rail-label { opacity: 1; transform: none; }

@media (max-width: 1100px) {
  .section-rail { display: none; }
}

/* 返回顶部 */
.to-top {
  position: fixed; right: 26px; bottom: 28px; z-index: 90;
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 15px; backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: opacity .4s var(--ease), transform .4s var(--ease), visibility .4s, border-color .3s, color .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); border-color: var(--primary); color: var(--primary); }

/* 动效全量呈现：不随系统“减少动态效果”关闭 */

/* ---------- 标签 / 卡片清单 / 卡片数据 ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.tags span {
  font-size: 12px; letter-spacing: .08em; padding: 6px 13px;
  border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-dim); background: var(--surface);
}
.glass-meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
  margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--border);
}
.glass-meta div { display: flex; align-items: baseline; gap: 8px; }
.glass-meta strong { font-size: 22px; font-weight: 700; }
.glass-meta span { font-size: 11.5px; color: var(--text-faint); letter-spacing: .06em; }

/* ---------- 水梦苍穹翻页卡 ---------- */
.theme-slider { overflow: hidden; }
.slider-viewport { display: grid; }
.slide {
  grid-area: 1 / 1; opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .55s var(--ease), transform .55s var(--ease), visibility .55s;
}
.slide.is-active { opacity: 1; visibility: visible; transform: none; }
@keyframes sealPop {
  0% { transform: scale(.82); opacity: .35; }
  100% { transform: scale(1); opacity: 1; }
}
.slide.is-active .seal { animation: sealPop .55s var(--ease) both; }
.slide-head { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.slide-head .seal {
  width: auto; min-width: 42px; padding: 0 11px; height: 42px;
  font-size: 21px; margin-bottom: 0;
}
.slide-tag { font-size: 11px; letter-spacing: .22em; color: var(--text-faint); }
.slide-desc { margin-top: 16px; font-size: 13.5px; color: var(--text-dim); line-height: 1.9; }
.slider-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--border);
}
.slider-dots { display: flex; align-items: center; gap: 7px; }
.dot {
  width: 6px; height: 6px; padding: 0; border: none; border-radius: 999px;
  background: var(--border-strong); cursor: pointer;
  transition: width .35s var(--ease), background .35s;
}
.dot.is-active { width: 22px; background: var(--primary); }
.slider-nav { display: flex; align-items: center; gap: 12px; }
.slider-btn {
  width: 28px; height: 28px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 50%;
  background: transparent; color: var(--text-dim); cursor: pointer;
  font-size: 12px; line-height: 1;
  transition: color .3s, border-color .3s, transform .3s var(--ease);
}
.slider-btn:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-1px); }
.slider-count { display: flex; align-items: center; gap: 4px; font-size: 11px; letter-spacing: .14em; color: var(--text-faint); }
.slider-count b { color: var(--text); font-weight: 600; }
.slider-count i { font-style: normal; opacity: .45; }

.card-list { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
.card-list li { position: relative; padding-left: 13px; font-size: 12.5px; color: var(--text-faint); line-height: 2.1; }
.card-list li::before { content: ""; position: absolute; left: 0; top: .95em; width: 5px; height: 1px; background: var(--text-faint); }

/* ---------- 案例 ---------- */
.work-list { border-top: 1px solid var(--border); }
.work {
  display: grid; grid-template-columns: 56px 1fr 34px; gap: 24px; align-items: center;
  padding: 32px 8px; border-bottom: 1px solid var(--border);
  transition: padding .45s var(--ease), background .45s var(--ease);
}
.work:hover { padding-left: 22px; background: linear-gradient(90deg, var(--surface), transparent 72%); }
.work-index { font-family: var(--font-serif); font-size: 13px; color: var(--text-faint); letter-spacing: .1em; }
.work-meta { font-size: 11px; letter-spacing: .18em; color: var(--text-faint); margin-bottom: 7px; }
.work h3 { font-size: 18px; font-weight: 600; letter-spacing: .03em; margin-bottom: 7px; transition: color .3s; }
.work:hover h3 { color: var(--primary); }
.work-info > p:last-child { font-size: 13.5px; color: var(--text-dim); max-width: 640px; }
.work-arrow { font-size: 16px; color: var(--text-faint); transition: transform .45s var(--ease), color .45s; }
.work:hover .work-arrow { transform: translate(4px, -4px); color: var(--primary); }

/* ---------- 客户评价 ---------- */
.voices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.voice {
  margin: 0; padding: 28px 24px; border: 1px solid var(--border);
  border-radius: 16px; background: var(--surface); backdrop-filter: blur(12px);
  transition: transform .45s var(--ease), border-color .45s;
}
.voice:hover { transform: translateY(-5px); border-color: var(--border-strong); }
.voice blockquote {
  font-family: var(--font-serif); font-size: 15.5px; line-height: 1.95;
  letter-spacing: .03em;
}
.voice blockquote::before { content: "“"; color: var(--primary); margin-right: 2px; }
.voice-desc { margin-top: 12px; font-size: 12.5px; color: var(--text-faint); line-height: 1.85; }
.voice figcaption { margin-top: 16px; font-size: 11.5px; color: var(--text-faint); letter-spacing: .08em; }
.voice figcaption span { color: var(--text-dim); margin-right: 8px; }

/* ---------- 手记 ---------- */
.journal {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border);
  border-radius: 18px; overflow: hidden;
}
.post {
  display: flex; flex-direction: column; padding: 34px 28px;
  background: var(--bg-soft); transition: background .4s var(--ease);
}
.post:hover { background: var(--surface-solid); }
[data-theme="dark"] .post:hover { background: rgba(24, 36, 60, .92); }
.post-meta { font-size: 11px; letter-spacing: .18em; color: var(--text-faint); }
.post h3 { font-size: 15.5px; line-height: 1.75; font-weight: 600; margin: 13px 0 11px; letter-spacing: .02em; }
.post p { font-size: 13px; color: var(--text-dim); line-height: 1.95; flex: 1; }
.post-more { margin-top: 20px; font-size: 12px; color: var(--primary); letter-spacing: .06em; }

/* ---------- 联系信息 ---------- */
.contact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border);
  text-align: left;
}
.contact-label { display: block; font-size: 11px; letter-spacing: .2em; color: var(--text-faint); margin-bottom: 7px; }
.contact-item a, .contact-item p { font-size: 13px; color: var(--text); word-break: break-all; line-height: 1.7; }
.contact-item a:hover { color: var(--primary); }

/* ---------- 页脚栏目 ---------- */
.footer-desc { margin-top: 16px; font-size: 12.5px; color: var(--text-faint); line-height: 1.95; }
.footer-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.footer-col h4 { font-size: 11.5px; font-weight: 500; letter-spacing: .18em; color: var(--text-faint); margin-bottom: 15px; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { font-size: 13px; color: var(--text-dim); transition: color .3s; }
.footer-col a:hover { color: var(--primary); }

/* ---------- 主题间奏 ---------- */
.interlude {
  position: relative; overflow: hidden; padding: 82px 0; text-align: center;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background:
    radial-gradient(700px 320px at 50% 120%, var(--orb-1), transparent 70%),
    linear-gradient(120deg, color-mix(in srgb, var(--primary) 7%, transparent), transparent 55%, color-mix(in srgb, var(--accent) 5%, transparent));
}
.interlude-rings { position: absolute; inset: 0; pointer-events: none; }
.interlude-rings span {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  border: 1px solid var(--border-strong); border-radius: 50%;
}
.interlude-rings span:nth-child(1) { width: 300px; height: 300px; opacity: .5; }
.interlude-rings span:nth-child(2) { width: 520px; height: 520px; opacity: .3; }
.interlude-rings span:nth-child(3) { width: 760px; height: 760px; opacity: .16; }
.interlude-inner { position: relative; z-index: 1; }
.interlude-text {
  font-family: var(--font-serif); font-size: clamp(19px, 2.3vw, 28px);
  line-height: 2.05; letter-spacing: .09em; font-weight: 700;
}
.interlude-sign { margin-top: 24px; font-size: 11.5px; letter-spacing: .28em; color: var(--text-faint); }

/* ---------- 问答 ---------- */
.faq { max-width: 860px; margin: 0 auto; border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary {
  position: relative; padding: 21px 46px 21px 0; cursor: pointer;
  font-size: 15.5px; font-weight: 600; letter-spacing: .02em;
  list-style: none; transition: color .3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::-moz-list-bullet { list-style: none; }
.faq-item summary::after {
  content: ""; position: absolute; right: 10px; top: 50%; width: 9px; height: 9px;
  margin-top: -6px; border-right: 1.5px solid var(--text-dim); border-bottom: 1.5px solid var(--text-dim);
  transform: rotate(45deg); transition: transform .35s var(--ease), border-color .3s;
}
.faq-item[open] summary::after { transform: rotate(-135deg); border-color: var(--primary); }
.faq-item summary:hover, .faq-item[open] summary { color: var(--primary); }
.faq-item p { padding: 0 46px 24px 0; font-size: 13.8px; color: var(--text-dim); line-height: 1.95; }

/* ---------- 点击粒子 ---------- */
.meteor-layer {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: 9000; pointer-events: none;
}
.fx-spark {
  position: fixed; border-radius: 50%; pointer-events: none; z-index: 9001;
  background: #bfe6ff; box-shadow: 0 0 6px color-mix(in srgb, var(--primary) 60%, transparent);
}

.fx-layer { position: fixed; inset: 0; z-index: 9999; pointer-events: none; overflow: hidden; }
.fx-particle, .fx-ring { position: absolute; will-change: transform, opacity; }
.fx-particle { border-radius: 50%; }
.fx-ring {
  border-radius: 50%; border: 1.5px solid var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 20%, transparent);
}

/* ============================================================
   平板
   ============================================================ */
@media (max-width: 980px) {
  /* 导航折叠 */
  .nav { height: 72px; }
  .nav-cta { display: none; }
  .menu-btn { display: flex; }
  .nav-links {
    position: fixed; top: 84px; right: 4%; left: auto;
    width: auto; min-width: 132px; max-width: 56vw; z-index: 99;
    display: flex; flex-direction: column; gap: 2px; padding: 8px;
    background: color-mix(in srgb, var(--bg) 62%, transparent);
    border: 1px solid var(--border); border-radius: 18px;
    box-shadow: 0 26px 60px -28px rgba(10, 25, 55, .38), inset 0 1px 0 rgba(255, 255, 255, .22);
    transform-origin: top right;
    transform: translateY(-8px) scale(.97); opacity: 0; visibility: hidden; pointer-events: none;
    transition: transform .32s var(--ease), opacity .25s, visibility .25s;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; pointer-events: auto; }
  .nav-links li { width: 100%; }
  .nav-links a {
    padding: 11px 18px; font-size: 14.5px; border-radius: 11px;
    border-bottom: none; text-align: center;
  }
  .nav-links a:hover, .nav-links a.active {
    color: var(--text);
    background: color-mix(in srgb, var(--primary) 10%, transparent);
  }
  .nav-links a::after { display: none; }

  /* 展开时菜单项依次滑入 */
  .nav-links li { opacity: 0; transform: translateY(-6px); transition: opacity .3s var(--ease), transform .3s var(--ease); }
  .nav-links.open li { opacity: 1; transform: none; }
  .nav-links.open li:nth-child(1) { transition-delay: .05s; }
  .nav-links.open li:nth-child(2) { transition-delay: .09s; }
  .nav-links.open li:nth-child(3) { transition-delay: .13s; }
  .nav-links.open li:nth-child(4) { transition-delay: .17s; }
  .nav-links.open li:nth-child(5) { transition-delay: .21s; }
  .nav-links.open li:nth-child(6) { transition-delay: .25s; }
  .nav-links.open li:nth-child(7) { transition-delay: .29s; }

  .split { grid-template-columns: 1fr; gap: 48px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); gap: 34px 26px; }
  .process::before { display: none; }
  .step { padding-top: 62px; }
  .voices { grid-template-columns: 1fr; gap: 16px; }
  .journal { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 20px; }
  .footer-cols { gap: 44px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3)::before, .stat:nth-child(1)::before { display: none; }
  .stat { border-bottom: 1px solid var(--border); }
  .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }
}

/* ============================================================
   手机
   ============================================================ */
@media (max-width: 720px) {
  .section { padding: 54px 0; }
  .nav { height: 68px; }
  .brand-logo { height: 33px; }
  .nav-cta { display: none; }
  .menu-btn { display: flex; }

  .nav-links {
    top: 78px; right: 6%;
    width: auto; min-width: 124px; max-width: 52vw;
    padding: 7px;
  }
  .nav-links a { padding: 11px 16px; font-size: 14.5px; text-align: center; }

  .preloader-logo { height: 34px; }
  .hero-watermark { font-size: 78vmin; right: -14%; top: 12%; opacity: .28; }
  .hero-wave { height: 64px; }
  .to-top { right: 16px; bottom: 18px; width: 40px; height: 40px; font-size: 14px; }

  .hero { padding: 112px 0 84px; min-height: 92svh; }
  .hero-inner { width: 92%; }
  .hero-title { font-size: clamp(30px, 8.4vw, 40px); letter-spacing: .02em; line-height: 1.3; }
  .hero-eyebrow { font-size: 9.5px; letter-spacing: .22em; padding: 8px 15px 8px 18px; margin-bottom: 26px; }
  .hero-sub { font-size: 13.5px; line-height: 1.95; margin-bottom: 32px; }
  .hero-sub br { display: none; }
  .hero-meta { margin-top: 46px; font-size: 9.5px; letter-spacing: .16em; gap: 10px; }
  .hero-rule { margin: 26px 0 24px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .ring-1 { width: 90vmin; height: 90vmin; }
  .ring-2 { width: 130vmin; height: 130vmin; }
  .ring-3 { display: none; }
  .scroll-hint { display: none; }

  .marquee { padding: 13px 0; }
  .marquee-track { font-size: 11px; letter-spacing: .22em; gap: 24px; }

  .stats { padding-top: 42px; }
  .stat { padding: 24px 10px; }
  .stat span { font-size: 11.5px; letter-spacing: .1em; }

  .section-head { margin-bottom: 32px; }
  .section-desc { font-size: 13px; }
  .section h2 { font-size: clamp(22px, 6.4vw, 27px); }

  .split { gap: 38px; }
  .split-text p { font-size: 14.5px; }
  .glass-card { padding: 44px 26px 40px; }
  .glass-card::after { inset: 9px; }
  .seal { width: 38px; height: 38px; font-size: 21px; margin-bottom: 22px; }
  .slide-head { margin-bottom: 18px; gap: 12px; }
  .slide-head .seal { min-width: 36px; height: 36px; padding: 0 9px; font-size: 18px; }
  .slide-tag { font-size: 10px; letter-spacing: .16em; }
  .slide-desc { margin-top: 14px; font-size: 12.5px; }
  .slider-bar { margin-top: 22px; padding-top: 16px; }
  .check-list li { font-size: 14px; padding: 13px 0 13px 28px; }
  .check-list li::before { top: 22px; width: 10px; }

  .cards { grid-template-columns: 1fr; }
  .card { padding: 32px 24px; }
  .card-icon { margin-bottom: 20px; }

  .process { grid-template-columns: 1fr; gap: 30px; }
  .step { padding-top: 0; padding-left: 66px; }
  .step-no { top: 0; }

  .interlude { padding: 56px 0; }
  .interlude-text { font-size: clamp(16px, 4.8vw, 20px); letter-spacing: .05em; line-height: 2.15; }
  .interlude-rings span:nth-child(3) { display: none; }
  .interlude-rings span:nth-child(1) { width: 220px; height: 220px; }
  .interlude-rings span:nth-child(2) { width: 380px; height: 380px; }

  .faq-item summary { font-size: 14.5px; padding: 18px 40px 18px 0; }
  .faq-item p { font-size: 13px; padding: 0 24px 20px 0; }

  .work { grid-template-columns: 32px 1fr; gap: 14px; padding: 24px 2px; }
  .work:hover { padding-left: 4px; }
  .work-arrow { display: none; }
  .work h3 { font-size: 16px; }
  .work-info > p:last-child { font-size: 13px; }

  .voice { padding: 24px 20px; }
  .post { padding: 28px 22px; }
  .contact-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 34px; padding-top: 26px; }

  .cta-panel { padding: 46px 20px; border-radius: 20px; }
  .cta-panel > p { font-size: 13px; margin-bottom: 26px; }
  .cta-actions .btn { width: 100%; padding: 14px 14px; font-size: 13px; word-break: break-all; letter-spacing: 0; }
  .cta-note { font-size: 11px !important; letter-spacing: .14em; }

  .site-footer { padding-top: 38px; }
  .footer-inner { flex-direction: column; gap: 32px; padding-bottom: 30px; }
  .footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; width: 100%; }
  .footer-col h4 { font-size: 11px; margin-bottom: 12px; }
  .footer-col a { font-size: 12.5px; }
  .footer-slogan { margin-top: 14px; }
  .footer-beian { font-size: 11.5px; line-height: 1.9; }
}