/* ============================================================
   灵动光标科技 Digital Cursor Tech — 官网设计系统
   深色科技 + 渐变光效 | 三语 (中/EN/AR-RTL)
   ============================================================ */

:root {
  /* Core palette */
  --bg-0: #05060f;
  --bg-1: #0a0c1b;
  --bg-2: #0f1226;
  --bg-glass: rgba(20, 24, 48, 0.55);
  --bg-glass-2: rgba(28, 33, 66, 0.42);
  --stroke: rgba(140, 160, 255, 0.14);
  --stroke-strong: rgba(150, 170, 255, 0.28);

  /* Text */
  --text-0: #f2f4ff;
  --text-1: #c3c8e6;
  --text-2: #8b91b8;
  --text-3: #5c6288;

  /* Accents */
  --violet: #7c5cff;
  --indigo: #4d6bff;
  --cyan: #22d3ee;
  --magenta: #f24bd6;
  --emerald: #34e5b0;
  --amber: #ffb648;

  /* Gradients */
  --grad-primary: linear-gradient(120deg, #7c5cff 0%, #4d6bff 45%, #22d3ee 100%);
  --grad-magenta: linear-gradient(120deg, #f24bd6 0%, #7c5cff 100%);
  --grad-aurora: linear-gradient(120deg, #22d3ee, #7c5cff 50%, #f24bd6);
  --grad-text: linear-gradient(100deg, #ffffff 0%, #c3c8ff 40%, #7cf0ff 100%);

  /* Layout */
  --maxw: 1200px;
  --radius: 20px;
  --radius-sm: 14px;
  --radius-lg: 30px;
  --nav-h: 74px;

  /* Motion */
  --ease: cubic-bezier(.22,.61,.36,1);

  --font-zh: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  --font-en: "Inter","Segoe UI",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --font-ar: "Segoe UI","Tahoma","Noto Naskh Arabic","Amiri",system-ui,sans-serif;
  --font: var(--font-zh);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
body[lang="en"] { --font: var(--font-en); }
body[lang="ar"] { --font: var(--font-ar); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: rgba(124,92,255,.4); color: #fff; }

/* ---------- Ambient background ---------- */
.bg-canvas {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(1100px 700px at 15% -5%, rgba(124,92,255,.22), transparent 60%),
    radial-gradient(1000px 800px at 95% 8%, rgba(34,211,238,.16), transparent 55%),
    radial-gradient(900px 900px at 60% 110%, rgba(242,75,214,.14), transparent 55%),
    var(--bg-0);
}
.bg-canvas::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 40%, transparent 80%);
}
.orb { position: fixed; border-radius: 50%; filter: blur(70px); opacity: .5; z-index: -1; pointer-events: none; }
.orb.a { width: 480px; height: 480px; background: radial-gradient(circle, #7c5cff, transparent 70%); top: -120px; left: -80px; animation: float 18s var(--ease) infinite; }
.orb.b { width: 420px; height: 420px; background: radial-gradient(circle, #22d3ee, transparent 70%); top: 40%; right: -140px; animation: float 22s var(--ease) infinite reverse; }
.orb.c { width: 380px; height: 380px; background: radial-gradient(circle, #f24bd6, transparent 70%); bottom: -140px; left: 30%; animation: float 26s var(--ease) infinite; }
@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(40px,-30px) scale(1.12); }
}

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; position: relative; }
.section.tight { padding: 80px 0; }

/* ---------- Typography ---------- */
h1,h2,h3,h4 { color: var(--text-0); line-height: 1.2; font-weight: 800; letter-spacing: -.01em; }
.display { font-size: clamp(2.4rem, 6vw, 4.6rem); font-weight: 850; line-height: 1.08; letter-spacing: -.03em; }
.h-section { font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 820; letter-spacing: -.02em; }
.grad-text { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad-brand { background: var(--grad-aurora); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--cyan); padding: 7px 14px; border-radius: 100px;
  background: rgba(34,211,238,.08); border: 1px solid rgba(34,211,238,.22);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.lead { font-size: clamp(1rem, 1.4vw, 1.18rem); color: var(--text-1); max-width: 620px; }
.muted { color: var(--text-2); }
.section-head { max-width: 680px; margin-bottom: 56px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .h-section { margin: 18px 0 14px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 26px; border-radius: 100px; font-weight: 700; font-size: .96rem;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-primary); color: #fff; box-shadow: 0 10px 30px -8px rgba(124,92,255,.6); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 44px -8px rgba(124,92,255,.75); }
.btn-ghost { background: rgba(255,255,255,.04); color: var(--text-0); border: 1px solid var(--stroke-strong); }
.btn-ghost:hover { background: rgba(255,255,255,.09); transform: translateY(-3px); }
.btn-lg { padding: 17px 34px; font-size: 1.02rem; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed; inset-inline: 0; top: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8,10,22,.72); backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%); border-bottom-color: var(--stroke);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; color: var(--text-0); font-size: 1.06rem; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 12px; position: relative; flex-shrink: 0;
  background: var(--grad-primary); display: grid; place-items: center;
  box-shadow: 0 6px 20px -6px rgba(124,92,255,.7);
}
.brand .logo svg { width: 22px; height: 22px; }
.brand small { display: block; font-size: .64rem; letter-spacing: .18em; color: var(--text-2); font-weight: 600; margin-top: 1px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 15px; border-radius: 100px; font-size: .93rem; font-weight: 600; color: var(--text-1);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text-0); background: rgba(255,255,255,.05); }
.nav-links a.active { color: var(--text-0); background: rgba(124,92,255,.16); }
.nav-right { display: flex; align-items: center; gap: 12px; }

/* Language switcher */
.lang-switch { display: flex; gap: 2px; padding: 4px; border-radius: 100px; background: rgba(255,255,255,.05); border: 1px solid var(--stroke); }
.lang-switch button {
  padding: 5px 11px; border-radius: 100px; font-size: .8rem; font-weight: 700; color: var(--text-2);
  transition: color .2s, background .2s;
}
.lang-switch button.active { color: #fff; background: var(--grad-primary); }
.lang-switch button:hover:not(.active) { color: var(--text-0); }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--stroke); background: rgba(255,255,255,.04); }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text-0); margin: 3px auto; border-radius: 2px; transition: .3s; }

/* ---------- Hero ---------- */
.hero { padding-top: calc(var(--nav-h) + 70px); padding-bottom: 90px; position: relative; }
.hero-inner { max-width: 900px; }
.hero .display { margin: 26px 0 22px; }
.hero .lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); margin-bottom: 36px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 46px; }
.hero-tags span {
  padding: 9px 17px; border-radius: 100px; font-size: .88rem; font-weight: 600; color: var(--text-1);
  background: var(--bg-glass); border: 1px solid var(--stroke); backdrop-filter: blur(8px);
}

/* ---------- Stats ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.stat {
  padding: 32px 26px; border-radius: var(--radius); text-align: center;
  background: var(--bg-glass); border: 1px solid var(--stroke); backdrop-filter: blur(10px);
  transition: transform .3s var(--ease), border-color .3s;
}
.stat:hover { transform: translateY(-6px); border-color: var(--stroke-strong); }
.stat .num { font-size: clamp(2rem,3.4vw,2.9rem); font-weight: 850; line-height: 1; }
.stat .lbl { color: var(--text-2); font-size: .92rem; margin-top: 12px; font-weight: 600; }

/* ---------- Cards grid ---------- */
.grid { display: grid; gap: 22px; }
.grid.cols-2 { grid-template-columns: repeat(2,1fr); }
.grid.cols-3 { grid-template-columns: repeat(3,1fr); }
.grid.cols-4 { grid-template-columns: repeat(4,1fr); }

.card {
  position: relative; padding: 30px; border-radius: var(--radius);
  background: var(--bg-glass); border: 1px solid var(--stroke);
  backdrop-filter: blur(12px); overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s, box-shadow .35s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad-primary); opacity: 0;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; transition: opacity .35s;
}
.card:hover { transform: translateY(-8px); box-shadow: 0 26px 60px -24px rgba(0,0,0,.7); }
.card:hover::before { opacity: .9; }

/* Service card */
.svc-icon {
  width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 22px;
  background: rgba(124,92,255,.12); border: 1px solid var(--stroke-strong);
}
.svc-icon svg { width: 28px; height: 28px; stroke: var(--cyan); }
.card h3 { font-size: 1.28rem; margin-bottom: 12px; }
.card p { color: var(--text-2); font-size: .96rem; }
.svc-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.svc-tags span { font-size: .76rem; color: var(--text-3); padding: 4px 11px; border-radius: 100px; border: 1px solid var(--stroke); }
.svc-num { position: absolute; top: 24px; inset-inline-end: 28px; font-size: 1rem; font-weight: 800; color: var(--text-3); }

/* Feature / why card */
.feature { padding: 28px; }
.feature .svc-icon { width: 50px; height: 50px; border-radius: 14px; margin-bottom: 18px; }
.feature .svc-icon svg { width: 24px; height: 24px; }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; }
.step { padding: 30px 26px; border-radius: var(--radius); background: var(--bg-glass); border: 1px solid var(--stroke); position: relative; }
.step .idx {
  font-size: 2.4rem; font-weight: 850; line-height: 1;
  background: var(--grad-aurora); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 16px;
}
.step h4 { font-size: 1.12rem; margin-bottom: 10px; }
.step p { color: var(--text-2); font-size: .9rem; }

/* ---------- Case cards ---------- */
.case-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; justify-content: center; }
.case-filters button {
  padding: 10px 20px; border-radius: 100px; font-size: .9rem; font-weight: 600; color: var(--text-2);
  border: 1px solid var(--stroke); background: rgba(255,255,255,.03); transition: .25s;
}
.case-filters button.active { color: #fff; background: var(--grad-primary); border-color: transparent; }
.case-filters button:hover:not(.active) { color: var(--text-0); border-color: var(--stroke-strong); }

.case {
  position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--stroke);
  background: var(--bg-glass); backdrop-filter: blur(12px);
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s;
}
.case:hover { transform: translateY(-8px); border-color: var(--stroke-strong); box-shadow: 0 30px 70px -30px rgba(0,0,0,.75); }
.case-visual {
  height: 190px; position: relative; overflow: hidden; display: grid; place-items: center;
}
.case-visual .mesh { position: absolute; inset: 0; opacity: .95; transition: transform .5s var(--ease); }
.case:hover .case-visual .mesh { transform: scale(1.08); }
.case-visual .badge {
  position: relative; z-index: 2; font-size: 2.1rem; font-weight: 850; color: #fff;
  text-shadow: 0 4px 30px rgba(0,0,0,.4); letter-spacing: -.02em;
}
.case-visual .badge small { display: block; font-size: .72rem; font-weight: 600; letter-spacing: .1em; opacity: .85; margin-top: 4px; }
.case-body { padding: 24px 26px 28px; }
.case-cat { font-size: .74rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--cyan); }
.case-body h3 { font-size: 1.24rem; margin: 10px 0 10px; }
.case-body p { color: var(--text-2); font-size: .92rem; }
.case-tags { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 16px; }
.case-tags span { font-size: .73rem; color: var(--text-3); padding: 4px 10px; border-radius: 100px; border: 1px solid var(--stroke); }
.case.hidden { display: none; }

/* Result metric chips */
.results-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 16px; }
.result {
  padding: 26px 18px; border-radius: var(--radius-sm); text-align: center;
  background: var(--bg-glass); border: 1px solid var(--stroke); transition: transform .3s, border-color .3s;
}
.result:hover { transform: translateY(-5px); border-color: var(--stroke-strong); }
.result .r-num { font-size: 1.7rem; font-weight: 850; line-height: 1; }
.result .r-lbl { font-size: .8rem; color: var(--text-2); margin-top: 10px; }

/* ---------- Global reach ---------- */
.reach-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.reach {
  padding: 34px 30px; border-radius: var(--radius); background: var(--bg-glass); border: 1px solid var(--stroke);
  transition: transform .3s, border-color .3s;
}
.reach:hover { transform: translateY(-6px); border-color: var(--stroke-strong); }
.reach .glyph { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
.reach h4 { font-size: 1.15rem; margin-bottom: 10px; }
.reach p { color: var(--text-2); font-size: .92rem; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  padding: 70px 50px; text-align: center;
  background: linear-gradient(120deg, rgba(124,92,255,.22), rgba(34,211,238,.14));
  border: 1px solid var(--stroke-strong);
}
.cta-band::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(600px 300px at 50% -20%, rgba(124,92,255,.4), transparent 70%);
}
.cta-band h2 { font-size: clamp(1.8rem,3.4vw,2.8rem); margin-bottom: 16px; }
.cta-band p { color: var(--text-1); max-width: 560px; margin: 0 auto 32px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: start; }
.info-list { display: grid; gap: 18px; margin-top: 30px; }
.info-item { display: flex; gap: 16px; align-items: flex-start; padding: 20px; border-radius: var(--radius-sm); background: var(--bg-glass); border: 1px solid var(--stroke); }
.info-item .ic { width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0; display: grid; place-items: center; background: rgba(124,92,255,.12); border: 1px solid var(--stroke-strong); }
.info-item .ic svg { width: 20px; height: 20px; stroke: var(--cyan); }
.info-item .t { font-size: .8rem; color: var(--text-2); font-weight: 600; }
.info-item .v { color: var(--text-0); font-weight: 600; margin-top: 3px; }
.form-card { padding: 34px; border-radius: var(--radius); background: var(--bg-glass); border: 1px solid var(--stroke); backdrop-filter: blur(12px); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .85rem; color: var(--text-1); font-weight: 600; margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm); font-family: inherit; font-size: .95rem;
  background: rgba(255,255,255,.04); border: 1px solid var(--stroke); color: var(--text-0); transition: border-color .2s, background .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--violet); background: rgba(124,92,255,.06); }
.field textarea { resize: vertical; min-height: 120px; }
.field select option { background: var(--bg-2); }
.form-note { font-size: .82rem; color: var(--text-3); margin-top: 6px; }
.form-ok { display: none; padding: 14px 18px; border-radius: var(--radius-sm); background: rgba(52,229,176,.1); border: 1px solid rgba(52,229,176,.3); color: var(--emerald); font-weight: 600; font-size: .92rem; margin-top: 8px; }
.form-ok.show { display: block; }

/* ---------- Split / about ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.mvv { display: grid; gap: 16px; }
.mvv-item { padding: 24px; border-radius: var(--radius-sm); background: var(--bg-glass); border: 1px solid var(--stroke); }
.mvv-item .k { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); font-weight: 700; }
.mvv-item h4 { font-size: 1.1rem; margin: 8px 0 6px; }
.mvv-item p { color: var(--text-2); font-size: .92rem; }

/* Decorative panel */
.panel-visual {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 380px;
  border: 1px solid var(--stroke-strong); background: linear-gradient(135deg, rgba(124,92,255,.16), rgba(34,211,238,.08));
  display: grid; place-items: center;
}
.panel-visual .rings { position: absolute; inset: 0; }
.panel-visual .ring { position: absolute; border-radius: 50%; border: 1px solid rgba(140,160,255,.2); top: 50%; left: 50%; transform: translate(-50%,-50%); }
.panel-visual .cursor-mark { position: relative; z-index: 2; width: 120px; height: 120px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--stroke); padding: 66px 0 34px; margin-top: 40px; background: rgba(6,8,18,.6); }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer .brand { margin-bottom: 18px; }
.footer-col h5 { font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-2); margin-bottom: 16px; font-weight: 700; }
.footer-col a { display: block; color: var(--text-1); font-size: .92rem; padding: 6px 0; transition: color .2s; }
.footer-col a:hover { color: var(--cyan); }
.footer-about { color: var(--text-2); font-size: .92rem; max-width: 320px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 26px; border-top: 1px solid var(--stroke); flex-wrap: wrap; }
.footer-bottom p { color: var(--text-3); font-size: .86rem; }
.socials { display: flex; gap: 10px; }
.socials a { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; border: 1px solid var(--stroke); color: var(--text-2); transition: .25s; }
.socials a:hover { color: #fff; border-color: var(--stroke-strong); background: rgba(124,92,255,.14); }
.socials svg { width: 18px; height: 18px; }

/* ---------- Page header (inner pages) ---------- */
.page-hero { padding-top: calc(var(--nav-h) + 80px); padding-bottom: 40px; text-align: center; }
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero h1 { font-size: clamp(2.2rem,5vw,3.6rem); margin-bottom: 18px; }
.page-hero p { max-width: 620px; margin: 0 auto; }
.breadcrumb { display: flex; gap: 8px; justify-content: center; margin-bottom: 22px; font-size: .85rem; color: var(--text-3); }
.breadcrumb a:hover { color: var(--cyan); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* ---------- RTL ---------- */
[dir="rtl"] .hero-inner, [dir="rtl"] .section-head { text-align: right; }
[dir="rtl"] .section-head.center, [dir="rtl"] .page-hero { text-align: center; }
[dir="rtl"] .eyebrow { letter-spacing: 0; }
[dir="rtl"] .btn svg, [dir="rtl"] .arrow-flip { transform: scaleX(-1); }
[dir="rtl"] .display, [dir="rtl"] .h-section { letter-spacing: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .nav-links, .footer-top { display: none; }
  .footer-top.mobile-show { display: grid; grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: stretch; gap: 4px;
    position: absolute; top: var(--nav-h); inset-inline: 12px; padding: 14px;
    background: rgba(10,12,26,.96); backdrop-filter: blur(18px); border: 1px solid var(--stroke); border-radius: var(--radius);
  }
  .nav-links.open a { padding: 12px 16px; }
  .stats-grid, .results-grid { grid-template-columns: repeat(2,1fr); }
  .grid.cols-3, .grid.cols-4, .steps, .reach-grid { grid-template-columns: repeat(2,1fr); }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .panel-visual { min-height: 300px; }
}
@media (max-width: 620px) {
  .section { padding: 78px 0; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .stats-grid, .steps, .reach-grid, .results-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: repeat(2,1fr); }
  .cta-band { padding: 48px 26px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; }
  .reveal { transition: none; opacity: 1; transform: none; }
}

/* ============================================================
   案例详情模板 · 仿真 UI 模型
   ============================================================ */
.case { cursor: pointer; }
.case-body .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; color: var(--cyan); font-weight: 600; font-size: .88rem; }
.case-body .more svg { width: 15px; height: 15px; }

/* --- Detail hero --- */
.cd-hero { padding-top: calc(var(--nav-h) + 56px); padding-bottom: 24px; }
.cd-back { display: inline-flex; align-items: center; gap: 7px; font-size: .88rem; color: var(--text-2); font-weight: 600; margin-bottom: 22px; transition: color .2s; }
.cd-back:hover { color: var(--cyan); }
.cd-back svg { width: 16px; height: 16px; }
.cd-cat { font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); }
.cd-title { font-size: clamp(2rem,4.4vw,3.2rem); margin: 14px 0 16px; }
.cd-sub { max-width: 640px; }

/* --- Meta bar --- */
.cd-meta { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin: 40px 0 10px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--stroke); background: var(--stroke); }
.cd-meta .m { background: var(--bg-1); padding: 22px 24px; }
.cd-meta .m .k { font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); font-weight: 700; }
.cd-meta .m .v { color: var(--text-0); font-weight: 700; margin-top: 6px; font-size: 1.02rem; }

/* --- Device stage --- */
.device-stage {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; padding: 48px 40px;
  border: 1px solid var(--stroke-strong); display: grid; place-items: center; min-height: 420px;
}
.device-stage .glow { position: absolute; inset: 0; opacity: .5; filter: blur(30px); }
.device-stage .grid-fade { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px); background-size: 40px 40px; mask-image: radial-gradient(ellipse at center,#000,transparent 75%); }

/* Browser mockup */
.mock-browser { position: relative; z-index: 2; width: 100%; max-width: 640px; border-radius: 14px; overflow: hidden; background: #0c1024; border: 1px solid rgba(160,180,255,.22); box-shadow: 0 40px 90px -30px rgba(0,0,0,.8); }
.mock-browser .bar { display: flex; align-items: center; gap: 8px; padding: 11px 14px; background: #141a33; border-bottom: 1px solid rgba(160,180,255,.14); }
.mock-browser .bar i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.mock-browser .bar i:nth-child(1){ background:#ff5f57;} .mock-browser .bar i:nth-child(2){ background:#febc2e;} .mock-browser .bar i:nth-child(3){ background:#28c840;}
.mock-browser .bar .url { flex: 1; margin-inline-start: 10px; height: 20px; border-radius: 6px; background: rgba(255,255,255,.07); }
.mock-browser .view { position: relative; }
.mock-browser .top { height: 46px; display: flex; align-items: center; gap: 10px; padding: 0 18px; background: rgba(255,255,255,.03); border-bottom: 1px solid rgba(255,255,255,.05); }
.mock-browser .top .logo { width: 22px; height: 22px; border-radius: 6px; }
.mock-browser .top .navdot { width: 34px; height: 7px; border-radius: 4px; background: rgba(255,255,255,.12); }
.mock-browser .hero { padding: 26px 20px; }
.mock-browser .hero .h { height: 15px; border-radius: 5px; margin-bottom: 9px; }
.mock-browser .hero .h.w1{ width: 62%;} .mock-browser .hero .h.w2{ width: 44%;}
.mock-browser .hero .line { height: 7px; border-radius: 4px; background: rgba(255,255,255,.1); margin-bottom: 6px; }
.mock-browser .hero .line.s{ width: 70%;}
.mock-browser .hero .pill { display: inline-block; width: 96px; height: 26px; border-radius: 100px; margin-top: 12px; }
.mock-browser .row { display: flex; gap: 10px; padding: 0 20px 24px; }
.mock-browser .row .tile { flex: 1; height: 66px; border-radius: 9px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.06); }

/* Phone mockup */
.mock-phone { position: relative; z-index: 2; width: 260px; height: 540px; border-radius: 40px; padding: 12px; background: linear-gradient(160deg,#1b2140,#0b0f22); border: 1px solid rgba(160,180,255,.25); box-shadow: 0 45px 90px -30px rgba(0,0,0,.85); }
.mock-phone .notch { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); width: 92px; height: 20px; border-radius: 0 0 14px 14px; background: #0b0f22; z-index: 3; }
.mock-phone .screen { position: relative; width: 100%; height: 100%; border-radius: 30px; overflow: hidden; background: #0c1024; }
.mock-phone .p-top { height: 120px; padding: 34px 18px 0; position: relative; }
.mock-phone .p-top .t { height: 13px; width: 55%; border-radius: 5px; background: rgba(255,255,255,.85); }
.mock-phone .p-top .s { height: 7px; width: 40%; border-radius: 4px; background: rgba(255,255,255,.5); margin-top: 8px; }
.mock-phone .p-body { padding: 16px; }
.mock-phone .p-card { height: 84px; border-radius: 14px; margin-bottom: 12px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.07); display: flex; gap: 10px; padding: 12px; align-items: center; }
.mock-phone .p-card .av { width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0; }
.mock-phone .p-card .ll { flex: 1; }
.mock-phone .p-card .ll b { display: block; height: 8px; width: 70%; border-radius: 4px; background: rgba(255,255,255,.22); margin-bottom: 7px; }
.mock-phone .p-card .ll i { display: block; height: 6px; width: 45%; border-radius: 4px; background: rgba(255,255,255,.13); }
.mock-phone .p-tab { position: absolute; bottom: 0; inset-inline: 0; height: 58px; background: rgba(12,16,36,.9); border-top: 1px solid rgba(255,255,255,.08); display: flex; justify-content: space-around; align-items: center; padding: 0 22px; }
.mock-phone .p-tab span { width: 22px; height: 22px; border-radius: 7px; background: rgba(255,255,255,.14); }
.mock-phone .p-tab span.on { background: #fff; }

/* Login card mockup */
.mock-login { position: relative; z-index: 2; width: 320px; border-radius: 20px; padding: 34px 30px; background: rgba(18,22,44,.75); border: 1px solid rgba(160,180,255,.28); backdrop-filter: blur(14px); box-shadow: 0 40px 90px -30px rgba(0,0,0,.8); }
.mock-login .lg { width: 48px; height: 48px; border-radius: 14px; margin: 0 auto 20px; }
.mock-login .ttl { height: 14px; width: 55%; border-radius: 5px; background: rgba(255,255,255,.8); margin: 0 auto 8px; }
.mock-login .desc { height: 7px; width: 75%; border-radius: 4px; background: rgba(255,255,255,.4); margin: 0 auto 24px; }
.mock-login .inp { height: 42px; border-radius: 11px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); margin-bottom: 12px; }
.mock-login .sub { height: 44px; border-radius: 11px; margin-top: 6px; }
.mock-login .alt { height: 6px; width: 50%; border-radius: 4px; background: rgba(255,255,255,.22); margin: 18px auto 0; }

/* Marketing KV mockup */
.mock-kv { position: relative; z-index: 2; width: 100%; max-width: 560px; aspect-ratio: 16/10; border-radius: 18px; overflow: hidden; border: 1px solid rgba(160,180,255,.22); box-shadow: 0 40px 90px -30px rgba(0,0,0,.8); display: flex; flex-direction: column; justify-content: space-between; padding: 30px; }
.mock-kv .badge2 { align-self: flex-start; padding: 6px 14px; border-radius: 100px; background: rgba(255,255,255,.9); height: 24px; width: 90px; }
.mock-kv .big { }
.mock-kv .big .h { height: 22px; border-radius: 6px; background: rgba(255,255,255,.92); margin-bottom: 10px; }
.mock-kv .big .h.w1{ width: 70%;} .mock-kv .big .h.w2{ width: 48%;}
.mock-kv .big .l { height: 8px; width: 55%; border-radius: 4px; background: rgba(255,255,255,.55); margin-top: 14px; }
.mock-kv .cta2 { align-self: flex-start; margin-top: 16px; height: 34px; width: 120px; border-radius: 100px; background: #fff; }

/* Screen thumbnails */
.cd-thumbs { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 22px; }
.cd-thumb { border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--stroke); background: var(--bg-glass); }
.cd-thumb .pic { height: 120px; position: relative; }
.cd-thumb .cap { padding: 12px 16px; font-size: .84rem; color: var(--text-2); font-weight: 600; }

/* Two-column detail */
.cd-cols { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.cd-block h3 { font-size: 1.3rem; margin-bottom: 14px; }
.cd-block p { color: var(--text-1); }
.sol-list { display: grid; gap: 12px; margin-top: 6px; }
.sol-list .s { display: flex; gap: 12px; align-items: flex-start; padding: 16px 18px; border-radius: var(--radius-sm); background: var(--bg-glass); border: 1px solid var(--stroke); }
.sol-list .s .n { width: 26px; height: 26px; border-radius: 8px; flex-shrink: 0; display: grid; place-items: center; font-size: .78rem; font-weight: 800; color: #fff; background: var(--grad-primary); }
.sol-list .s p { color: var(--text-1); font-size: .94rem; }

.cd-metrics { display: grid; gap: 14px; }
.cd-metrics .r { padding: 22px 24px; border-radius: var(--radius-sm); background: var(--bg-glass); border: 1px solid var(--stroke); }
.cd-metrics .r .n { font-size: 1.9rem; font-weight: 850; line-height: 1; }
.cd-metrics .r .l { color: var(--text-2); font-size: .9rem; margin-top: 8px; }

.deliver { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 8px; }
.deliver span { font-size: .82rem; color: var(--text-1); padding: 7px 14px; border-radius: 100px; background: rgba(255,255,255,.04); border: 1px solid var(--stroke); }

/* Testimonial */
.cd-quote { position: relative; border-radius: var(--radius-lg); padding: 50px; border: 1px solid var(--stroke-strong); overflow: hidden; background: linear-gradient(120deg, rgba(124,92,255,.14), rgba(34,211,238,.08)); }
.cd-quote .mark { font-size: 5rem; line-height: .6; color: rgba(140,160,255,.35); font-weight: 800; }
.cd-quote blockquote { font-size: clamp(1.15rem,2vw,1.55rem); color: var(--text-0); font-weight: 600; line-height: 1.5; margin: 8px 0 26px; max-width: 820px; }
.cd-quote .who { display: flex; align-items: center; gap: 14px; }
.cd-quote .who .ava { width: 48px; height: 48px; border-radius: 50%; background: var(--grad-primary); display: grid; place-items: center; color: #fff; font-weight: 800; }
.cd-quote .who .nm { color: var(--text-0); font-weight: 700; }
.cd-quote .who .rl { color: var(--text-2); font-size: .88rem; }

/* Next case */
.cd-next { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 34px 38px; border-radius: var(--radius); border: 1px solid var(--stroke); background: var(--bg-glass); transition: border-color .3s, transform .3s; }
.cd-next:hover { border-color: var(--stroke-strong); transform: translateY(-3px); }
.cd-next .k { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); font-weight: 700; }
.cd-next .t { color: var(--text-0); font-size: 1.3rem; font-weight: 800; margin-top: 6px; }
.cd-next .go { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; background: var(--grad-primary); flex-shrink: 0; }
.cd-next .go svg { width: 22px; height: 22px; stroke: #fff; }

@media (max-width: 980px) {
  .cd-meta { grid-template-columns: repeat(2,1fr); }
  .cd-cols { grid-template-columns: 1fr; gap: 30px; }
  .cd-thumbs { grid-template-columns: 1fr; }
  .device-stage { padding: 34px 20px; min-height: 340px; }
  .cd-quote { padding: 34px 26px; }
}

/* ============================================================
   真实截图占位槽 · 详情页翻页 · 返回顶部 · 客户 Logo 墙
   ============================================================ */
/* screenshot slots (auto-upgrade: 有图显示图，无图显示示意模型) */
.mock-browser .view, .mock-phone .screen, .mock-login, .mock-kv, .cd-thumb .pic { position: relative; }
.scr { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 6; background: #0c1024; }
.mock-login .scr, .mock-kv .scr { border-radius: inherit; }
.mock-phone .screen .scr { border-radius: 30px; }

/* mock note chip on device stage */
.mock-note {
  position: absolute; z-index: 8; top: 16px; inset-inline-end: 16px;
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 13px; border-radius: 100px;
  font-size: .74rem; font-weight: 600; color: var(--text-1);
  background: rgba(8,10,22,.72); border: 1px solid var(--stroke-strong); backdrop-filter: blur(8px);
}
.mock-note svg { width: 13px; height: 13px; stroke: var(--cyan); }
.cd-thumb .pic .tag {
  position: absolute; z-index: 7; bottom: 8px; inset-inline-start: 8px;
  font-size: .66rem; font-weight: 600; color: var(--text-2);
  background: rgba(8,10,22,.6); padding: 3px 8px; border-radius: 6px; border: 1px solid var(--stroke);
}

/* detail pager (prev / next) */
.cd-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cd-nav {
  display: flex; align-items: center; gap: 16px; padding: 26px 30px; border-radius: var(--radius);
  border: 1px solid var(--stroke); background: var(--bg-glass); transition: border-color .3s, transform .3s, background .3s;
}
.cd-nav:hover { border-color: var(--stroke-strong); transform: translateY(-3px); background: var(--bg-glass-2); }
.cd-nav.next { justify-content: flex-end; text-align: end; }
.cd-nav .k { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); font-weight: 700; }
.cd-nav .t { color: var(--text-0); font-size: 1.12rem; font-weight: 800; margin-top: 5px; }
.cd-nav .go { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--grad-primary); flex-shrink: 0; }
.cd-nav .go svg { width: 20px; height: 20px; stroke: #fff; }
.cd-nav.prev .go { background: rgba(255,255,255,.06); border: 1px solid var(--stroke-strong); }
.cd-nav.prev .go svg { stroke: var(--text-0); }
.cd-nav.prev:hover .go { background: var(--grad-primary); }
.cd-nav.prev:hover .go svg { stroke: #fff; }

/* back to top */
.to-top {
  position: fixed; z-index: 90; bottom: 26px; inset-inline-end: 26px; width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center; background: var(--grad-primary); box-shadow: 0 12px 30px -8px rgba(124,92,255,.6);
  opacity: 0; visibility: hidden; transform: translateY(14px) scale(.9); transition: all .3s var(--ease);
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -8px rgba(124,92,255,.8); }
.to-top svg { width: 22px; height: 22px; stroke: #fff; }

/* client logo wall */
.clients-note { text-align: center; color: var(--text-2); font-size: .95rem; margin-bottom: 40px; }
.logo-wall { display: grid; grid-template-columns: repeat(6,1fr); gap: 1px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--stroke); background: var(--stroke); }
.logo-cell {
  background: var(--bg-1); min-height: 110px; display: flex; align-items: center; justify-content: center; gap: 10px;
  color: var(--text-2); transition: background .3s, color .3s; padding: 16px;
}
.logo-cell:hover { background: var(--bg-2); color: var(--text-0); }
.logo-cell .mk { width: 26px; height: 26px; flex-shrink: 0; opacity: .8; transition: opacity .3s; }
.logo-cell:hover .mk { opacity: 1; }
.logo-cell .mk svg { width: 100%; height: 100%; }
.logo-cell .nm { font-weight: 800; font-size: 1.02rem; letter-spacing: -.01em; white-space: nowrap; }
.logo-cell .nm small { display: block; font-size: .58rem; letter-spacing: .1em; font-weight: 600; opacity: .7; }

@media (max-width: 980px) {
  .cd-pager { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 620px) {
  .logo-wall { grid-template-columns: repeat(2,1fr); }
  .logo-cell { min-height: 92px; }
}

/* ---------- 案例卡片真实封面 ---------- */
.case-visual .mesh { position: absolute; inset: 0; z-index: 0; }
.case-visual .cover { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; }
.case-visual .cv-scrim { position: absolute; inset: 0; z-index: 2; background: linear-gradient(to top, rgba(5,6,15,.82), rgba(5,6,15,.15) 55%, transparent); }
.case-visual .cv-metric { position: absolute; z-index: 3; inset-inline-start: 20px; bottom: 16px; display: flex; align-items: baseline; gap: 9px; }
.case-visual .cv-metric b { font-size: 1.7rem; font-weight: 850; color: #fff; letter-spacing: -.02em; line-height: 1; text-shadow: 0 2px 16px rgba(0,0,0,.5); }
.case-visual .cv-metric span { font-size: .8rem; color: rgba(255,255,255,.9); font-weight: 600; }
.case-visual { height: 200px; }