/* ============================================================
   FastPOS — Company Website Styles
   高级质感：深色 Hero + 渐变 + 毛玻璃 + 微动效
   ============================================================ */

:root {
  --primary: #4f7cff;
  --primary-2: #7c5cff;
  --accent: #00d4ff;
  --ink: #0b1026;
  --ink-2: #151b3b;
  --text: #232946;
  --text-muted: #66708f;
  --bg: #ffffff;
  --bg-soft: #f5f7ff;
  --border: #e7eaf6;
  --radius: 18px;
  --shadow: 0 20px 50px rgba(23, 32, 90, 0.10);
  --shadow-lg: 0 30px 80px rgba(23, 32, 90, 0.16);
  --gradient: linear-gradient(135deg, #4f7cff 0%, #7c5cff 55%, #a85cff 100%);
  --gradient-soft: linear-gradient(135deg, rgba(79,124,255,.12), rgba(124,92,255,.12));
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 600; border-radius: 999px;
  cursor: pointer; border: none; transition: all .3s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 10px 26px rgba(96, 102, 255, .38); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(96, 102, 255, .5); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.35); color: #fff; background: rgba(255,255,255,.06); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.6); }
.btn-light { background: #fff; color: var(--ink); box-shadow: 0 12px 30px rgba(0,0,0,.25); }
.btn-light:hover { transform: translateY(-2px); }
.btn-ghost-dark { border: 1.5px solid rgba(255,255,255,.5); color: #fff; }
.btn-ghost-dark:hover { background: rgba(255,255,255,.12); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding: 16px 0;
  background: rgba(8, 12, 31, .78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  transition: background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.navbar.scrolled {
  background: rgba(8, 12, 31, .96);
  padding: 10px 0;
  box-shadow: 0 8px 30px rgba(0,0,0,.25);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-logo {
  width: 38px; height: 38px; border-radius: 12px;
  object-fit: cover;
  display: block;
  background: #fff;
  box-shadow: 0 6px 16px rgba(96,102,255,.45);
}
.brand-name { color: #fff; font-weight: 800; font-size: 20px; letter-spacing: .3px; }
.brand-accent { color: var(--accent); }

.nav-links { display: flex; gap: 34px; }
.nav-links a {
  color: rgba(255,255,255,.82); font-size: 15px; font-weight: 500;
  position: relative; padding: 4px 0; transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 2px; border-radius: 2px;
  background: var(--gradient); transition: width .3s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

.nav-right { display: flex; align-items: center; gap: 16px; }

.lang-switch {
  display: flex; background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px; padding: 4px; gap: 2px;
}
.lang-btn {
  background: none; border: none; color: rgba(255,255,255,.75);
  font-size: 13px; font-weight: 600; cursor: pointer;
  padding: 5px 12px; border-radius: 999px; transition: all .25s;
}
.lang-btn.active { background: #fff; color: var(--ink); box-shadow: 0 4px 12px rgba(0,0,0,.25); }
.lang-btn:not(.active):hover { color: #fff; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.menu-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: 100vh;
  background: radial-gradient(1200px 600px at 80% -10%, #1b2452 0%, var(--ink) 55%);
  color: #fff;
  display: flex; align-items: center;
  padding: 130px 0 80px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; }
.glow-1 { width: 560px; height: 560px; background: rgba(79,124,255,.55); top: -180px; right: -120px; animation: float 9s ease-in-out infinite; }
.glow-2 { width: 420px; height: 420px; background: rgba(168,92,255,.4); bottom: -140px; left: -100px; animation: float 11s ease-in-out infinite reverse; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, #000 30%, transparent 75%);
}
@keyframes float {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(34px) scale(1.05); }
}

.hero-inner {
  position: relative; display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.18);
  padding: 8px 18px; border-radius: 999px;
  font-size: 14px; color: #dbe4ff; margin-bottom: 24px;
  backdrop-filter: blur(6px);
}
.hero-title { font-size: clamp(38px, 5vw, 62px); font-weight: 800; line-height: 1.14; letter-spacing: -.5px; }
.gradient-text {
  background: linear-gradient(90deg, #5ea2ff, #7c5cff, #c46bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-subtitle { margin: 26px 0 34px; font-size: 17px; color: rgba(255,255,255,.72); max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 48px; margin-top: 52px;
  padding-top: 32px; border-top: 1px solid rgba(255,255,255,.12);
}
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 34px; font-weight: 800; background: linear-gradient(120deg,#fff,#a8c4ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-plus { font-size: 20px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 13.5px; color: rgba(255,255,255,.6); margin-top: 4px; }

/* ---------- Hero 收银台 Mockup（纯 CSS 占位演示图） ---------- */
.hero-visual { position: relative; }
.mockup {
  background: #10173a;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px;
  box-shadow: 0 40px 90px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.05) inset;
  overflow: hidden;
  transform: perspective(1200px) rotateY(-8deg) rotateX(3deg);
  transition: transform .6s ease;
}
.mockup:hover { transform: perspective(1200px) rotateY(-3deg) rotateX(1deg); }
.mockup-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; background: rgba(255,255,255,.05);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.mockup-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.red { background: #ff5f57; } .dot.yellow { background: #febc2e; } .dot.green { background: #28c840; }
.mockup-url { margin-left: 10px; font-size: 12px; color: rgba(255,255,255,.45); }

.mockup-body { display: flex; height: 340px; }
.mock-side { width: 82px; padding: 16px 12px; background: rgba(255,255,255,.03); border-right: 1px solid rgba(255,255,255,.07); display: flex; flex-direction: column; align-items: center; gap: 18px; }
.mock-logo { width: 36px; height: 36px; border-radius: 10px; background: var(--gradient); opacity: .9; }
.mock-menu { display: flex; flex-direction: column; gap: 12px; }
.mock-menu span { width: 44px; height: 9px; border-radius: 5px; background: rgba(255,255,255,.14); }
.mock-menu span.active { background: var(--gradient); }

.mock-main { flex: 1; padding: 16px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.mock-cats { display: flex; gap: 8px; flex-wrap: wrap; }
.mock-cats .c {
  font-size: 11px; padding: 5px 12px; border-radius: 999px;
  background: rgba(255,255,255,.08); color: rgba(255,255,255,.65);
}
.mock-cats .c.active { background: var(--gradient); color: #fff; }
.mock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; flex: 1; }
.mock-grid .cell { border-radius: 10px; background: linear-gradient(160deg, rgba(255,255,255,.13), rgba(255,255,255,.05)); border: 1px solid rgba(255,255,255,.08); position: relative; }
.mock-grid .cell::after {
  content: ""; position: absolute; inset: 12px; border-radius: 6px;
  background: linear-gradient(120deg, rgba(255,255,255,.2), rgba(255,255,255,.05));
}

.mock-cart { width: 150px; padding: 16px 14px; background: rgba(255,255,255,.045); border-left: 1px solid rgba(255,255,255,.07); display: flex; flex-direction: column; gap: 12px; }
.cart-head { width: 70%; height: 12px; border-radius: 6px; background: rgba(255,255,255,.2); }
.cart-line { width: 100%; height: 9px; border-radius: 5px; background: rgba(255,255,255,.12); }
.cart-line.w70 { width: 70%; }
.cart-total { margin-top: auto; display: flex; justify-content: space-between; align-items: baseline; }
.t-label { font-size: 11px; color: rgba(255,255,255,.55); }
.t-num { font-size: 17px; font-weight: 800; color: #7ef0c0; }
.cart-btn { height: 34px; border-radius: 10px; background: var(--gradient); box-shadow: 0 8px 20px rgba(96,102,255,.4); }

.mockup-float {
  position: absolute; background: rgba(255,255,255,.97); color: var(--ink);
  border-radius: 14px; box-shadow: 0 18px 40px rgba(0,0,0,.35);
  padding: 12px 16px; display: flex; align-items: center; gap: 10px;
  animation: bob 4.5s ease-in-out infinite;
}
.float-card { top: 10%; left: -46px; }
.float-card b { display: block; font-size: 13.5px; }
.float-card small { color: var(--text-muted); font-size: 11.5px; }
.fc-icon { width: 30px; height: 30px; border-radius: 50%; background: #23c98b; color: #fff; display: grid; place-items: center; font-size: 15px; }
.float-receipt { bottom: 8%; right: -38px; animation-delay: 1.6s; }
.rc-line { width: 74px; height: 6px; border-radius: 3px; background: #dde3f5; margin-bottom: 5px; }
.rc-line.w60 { width: 50px; }
.rc-amount { font-weight: 800; font-size: 15px; margin-top: 4px; color: #232946; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ============================================================
   SECTION 通用
   ============================================================ */
.section { padding: 104px 0; }
section[id] { scroll-margin-top: 84px; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-tag {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--primary);
  background: var(--gradient-soft); border: 1px solid rgba(79,124,255,.25);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 18px;
}
.section-tag.light { color: var(--accent); background: rgba(0,212,255,.1); border-color: rgba(0,212,255,.3); }
.section-title { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -.4px; color: var(--ink); line-height: 1.2; }
.section-desc { margin-top: 14px; font-size: 16.5px; color: var(--text-muted); }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }

/* ============================================================
   SOLUTIONS
   ============================================================ */
.solutions { background: var(--bg); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 30px;
  box-shadow: var(--shadow);
  transition: transform .35s ease, box-shadow .35s ease;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--gradient); transform: scaleX(0); transform-origin: left;
  transition: transform .4s ease;
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.card:hover::before { transform: scaleX(1); }
.card-icon {
  width: 56px; height: 56px; border-radius: 16px;
  display: grid; place-items: center; margin-bottom: 22px; color: #fff;
}
.card-icon.retail { background: linear-gradient(135deg,#4f7cff,#5ea2ff); box-shadow: 0 10px 24px rgba(79,124,255,.35); }
.card-icon.restaurant { background: linear-gradient(135deg,#ff7a5c,#ff9a5c); box-shadow: 0 10px 24px rgba(255,122,92,.35); }
.card-icon.enterprise { background: linear-gradient(135deg,#7c5cff,#a85cff); box-shadow: 0 10px 24px rgba(124,92,255,.35); }
.solution-card h3 { font-size: 21px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.solution-card > p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 18px; }
.check-list li {
  position: relative; padding-left: 26px; font-size: 14.5px;
  color: var(--text); margin-bottom: 10px;
}
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(79,124,255,.12); color: var(--primary);
  font-size: 11px; font-weight: 800;
  display: grid; place-items: center;
}
.card-link { display: inline-block; margin-top: 12px; font-weight: 600; font-size: 14.5px; color: var(--primary); transition: gap .25s, color .25s; }
.card-link:hover { color: #3b63e8; }

/* ============================================================
   FEATURES
   ============================================================ */
.features { background: var(--bg-soft); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(79,124,255,.4); }
.feature-icon {
  width: 48px; height: 48px; border-radius: 14px; margin-bottom: 18px;
  display: grid; place-items: center;
  background: var(--gradient-soft); color: var(--primary);
  border: 1px solid rgba(79,124,255,.2);
}
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.feature-card p { font-size: 13.8px; color: var(--text-muted); line-height: 1.6; }

/* ============================================================
   MOBILE APP
   ============================================================ */
.app { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%); }
.app-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.app-info .section-title { margin-bottom: 14px; }
.app-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 34px 0; }
.app-feature {
  display: flex; gap: 14px; align-items: flex-start;
  background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 16px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.app-feature:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.app-feature .feature-icon { margin-bottom: 0; flex-shrink: 0; }
.app-feature h3 { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.app-feature p { font-size: 13px; color: var(--text-muted); line-height: 1.55; }

.app-badges { display: flex; gap: 14px; flex-wrap: wrap; }
.store-badge {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--ink); color: #fff;
  border-radius: 14px; padding: 12px 20px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.store-badge:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(11,16,38,.3); }
.store-badge svg { color: var(--accent); }
.store-badge b { display: block; font-size: 15px; line-height: 1.2; }
.store-badge small { font-size: 12px; color: rgba(255,255,255,.6); }

/* 手机 Mockup（纯 CSS 占位演示图） */
.app-visual { position: relative; display: grid; place-items: center; }
.phone-glow {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(79,124,255,.35), rgba(124,92,255,.12) 60%, transparent 75%);
  filter: blur(30px);
}
.phone {
  position: relative; width: 290px; border-radius: 42px;
  background: linear-gradient(160deg, #171d3d, #0b1026);
  padding: 14px; border: 2px solid rgba(255,255,255,.18);
  box-shadow: 0 40px 90px rgba(11,16,38,.45), inset 0 0 0 1px rgba(255,255,255,.06);
  z-index: 1;
  animation: float 8s ease-in-out infinite;
}
.phone-notch {
  position: absolute; top: 24px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 22px; border-radius: 14px; background: #0b1026;
  z-index: 2; border: 1px solid rgba(255,255,255,.1);
}
.phone-screen {
  background: linear-gradient(175deg, #f5f7ff, #e9edfb);
  border-radius: 30px; padding: 14px;
  display: flex; flex-direction: column; gap: 10px; height: 560px; overflow: hidden;
}
.ph-status { display: flex; justify-content: space-between; font-size: 11px; font-weight: 600; color: var(--ink); padding: 2px 4px; }
.ph-header { display: flex; align-items: center; gap: 10px; background: #fff; border-radius: 14px; padding: 10px 12px; box-shadow: 0 4px 12px rgba(23,32,90,.05); }
.ph-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--gradient); flex-shrink: 0; }
.ph-header b { display: block; font-size: 13.5px; color: var(--ink); line-height: 1.2; }
.ph-header small { font-size: 11px; color: #23c98b; }
.ph-bell { width: 22px; height: 22px; border-radius: 50%; background: var(--gradient-soft); margin-left: auto; position: relative; }
.ph-bell::after { content: ""; position: absolute; inset: 6px; border-radius: 50%; background: #ff7a5c; }
.ph-stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ph-stat { background: #fff; border-radius: 14px; padding: 12px; box-shadow: 0 4px 12px rgba(23,32,90,.05); }
.ph-stat small { display: block; font-size: 11px; color: var(--text-muted); margin-bottom: 4px; }
.ph-stat b { font-size: 17px; color: var(--ink); }
.ph-stat i { display: block; width: 70%; height: 6px; border-radius: 3px; background: var(--gradient); margin-top: 8px; }
.ph-stat:nth-child(2) i { width: 45%; }
.ph-chart {
  background: #fff; border-radius: 14px; padding: 12px;
  display: flex; align-items: flex-end; gap: 8px; height: 92px;
  box-shadow: 0 4px 12px rgba(23,32,90,.05);
}
.ph-chart span { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, #7c5cff, #b78bff); opacity: .8; }
.ph-chart span:nth-child(3n) { background: linear-gradient(180deg, #4f7cff, #7ab4ff); }
.ph-menu { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.ph-item { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.ph-item small { font-size: 10.5px; color: var(--text-muted); }
.pi { width: 34px; height: 34px; border-radius: 12px; background: var(--gradient-soft); }
.pi.i2 { background: rgba(255,122,92,.15); } .pi.i3 { background: rgba(35,201,139,.15); } .pi.i4 { background: rgba(0,212,255,.15); }
.ph-alert {
  display: flex; gap: 10px; align-items: flex-start;
  background: #fff7f0; border: 1px solid #ffe1c6; border-radius: 14px; padding: 10px 12px;
}
.pa-dot { width: 10px; height: 10px; border-radius: 50%; background: #ff7a5c; margin-top: 4px; flex-shrink: 0; box-shadow: 0 0 0 4px rgba(255,122,92,.18); }
.ph-alert b { display: block; font-size: 12.5px; color: var(--ink); }
.ph-alert small { font-size: 11px; color: var(--text-muted); }
.ph-tabbar {
  margin-top: auto; display: flex; justify-content: space-around;
  background: #fff; border-radius: 14px; padding: 10px 14px;
  box-shadow: 0 4px 12px rgba(23,32,90,.06);
}
.ph-tabbar span { width: 18px; height: 6px; border-radius: 3px; background: #dde3f5; }
.ph-tabbar span.on { width: 26px; background: var(--gradient); }

/* ============================================================
   GALLERY（真实功能截图，按语言切换）
   ============================================================ */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.gallery-item { text-align: center; }
.g-image {
  display: block;
  background: linear-gradient(160deg, #eef1fb, #e4e9f8);
  border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 14px;
  transition: transform .35s ease, box-shadow .35s ease;
}
.g-image:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.g-image img {
  width: 100%; height: auto; display: block;
  object-fit: cover; aspect-ratio: 16 / 10;
  background: #fff;
}
.g-label { font-size: 15px; font-weight: 600; color: var(--ink); margin-top: 4px; }

/* ============================================================
   VIDEOS（视频教程）
   ============================================================ */
.videos-section { background: var(--bg-soft); }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.video-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(23,32,90,.08);
  display: flex; flex-direction: column;
  transition: transform .35s ease, box-shadow .35s ease;
}
.video-item:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(23,32,90,.14); }
.video-frame { position: relative; background: #0b1026; aspect-ratio: 16 / 9; }
.video-frame video { width: 100%; height: 100%; display: block; }
.video-label {
  padding: 16px 18px 18px;
  font-size: 16px; font-weight: 700; color: var(--ink);
  margin: 0; line-height: 1.4;
}

/* ============================================================
   POSTER STRIP（海报氛围条，置于 Hero 与 Solutions 之间）
   - 无标题、无板块语义，仅作为页面氛围展示
   - 自动横滑，无缝循环
   ============================================================ */
.poster-strip {
  position: relative;
  background: linear-gradient(180deg, var(--bg) 0%, #f6f8ff 100%);
  padding: 36px 0 40px;
  overflow: hidden;
}
.poster-strip-track {
  display: flex;
  gap: 22px;
  width: max-content;
  animation: poster-scroll 40s linear infinite;
  will-change: transform;
}
.poster-strip:hover .poster-strip-track { animation-play-state: paused; }
@keyframes poster-scroll {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-50%, 0, 0); }
}
.poster-slide {
  flex-shrink: 0;
  width: 220px;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 10px 24px rgba(23,32,90,.10);
  transition: transform .35s ease, box-shadow .35s ease;
}
.poster-slide:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(23,32,90,.18); }
.poster-slide img { display: block; width: 100%; height: 280px; object-fit: cover; }
.poster-strip-fade {
  position: absolute; top: 0; bottom: 0; width: 100px;
  pointer-events: none; z-index: 1;
}
.poster-strip-fade-left  { left: 0;  background: linear-gradient(90deg, var(--bg), transparent); }
.poster-strip-fade-right { right: 0; background: linear-gradient(270deg, #f6f8ff, transparent); }

/* ============================================================
   VIDEOS（功能操作视频）
   ============================================================ */
.videos-section { background: var(--bg); }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.video-item { text-align: center; }
.video-frame {
  position: relative;
  background: #0b1026;
  border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 14px;
  aspect-ratio: 16 / 9;
}
.video-frame video {
  width: 100%; height: 100%; display: block; object-fit: cover; background: #000;
}
.video-label { font-size: 15px; font-weight: 600; color: var(--ink); }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials { background: var(--bg-soft); }
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testi-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: 0 12px 30px rgba(23,32,90,.06);
  display: flex; flex-direction: column; gap: 18px;
}
.testi-stars { color: #ffb400; font-size: 15px; letter-spacing: 3px; }
.testi-text { font-size: 15px; color: var(--text); line-height: 1.7; flex: 1; }
.testi-person { display: flex; align-items: center; gap: 12px; }
.testi-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 15px;
}
.testi-name { font-weight: 700; font-size: 14.5px; color: var(--ink); }
.testi-role { font-size: 12.5px; color: var(--text-muted); }

/* ============================================================
   CTA / CONTACT
   ============================================================ */
.cta {
  position: relative;
  background: radial-gradient(900px 500px at 50% 0%, #232d63 0%, var(--ink) 65%);
  color: #fff; text-align: center; padding: 110px 0;
  overflow: hidden;
}
.cta-glow { position: absolute; width: 480px; height: 480px; border-radius: 50%; background: rgba(79,124,255,.4); filter: blur(100px); top: -160px; left: 50%; transform: translateX(-50%); }
.cta-inner { position: relative; }
.cta-title { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; letter-spacing: -.5px; }
.cta-desc { margin: 18px auto 38px; max-width: 560px; font-size: 16.5px; color: rgba(255,255,255,.7); }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-contact { margin-top: 46px; display: flex; justify-content: center; align-items: center; gap: 48px; flex-wrap: wrap; }
.cta-phone { display: inline-flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 700; color: #fff; text-decoration: none; transition: color .25s; }
.cta-phone:hover { color: var(--accent); }
.cta-wechat { text-align: center; }
.cta-wechat img { width: 120px; height: 120px; border-radius: 10px; display: block; margin-bottom: 8px; }
.cta-wechat span { font-size: 13px; color: rgba(255,255,255,.6); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: #080c1f; color: rgba(255,255,255,.72); padding-top: 70px; }
.footer-inner {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px; padding-bottom: 54px;
}
.footer-brand p { margin-top: 16px; font-size: 14.5px; color: rgba(255,255,255,.5); max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14.5px; color: rgba(255,255,255,.6); margin-bottom: 12px; transition: color .25s; }
.footer-col a:hover { color: var(--accent); }
.footer-wechat { margin-top: 6px; }
.footer-wechat img { width: 110px; height: 110px; border-radius: 8px; display: block; margin-bottom: 8px; }
.footer-wechat span { font-size: 13px; color: rgba(255,255,255,.5); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13.5px; color: rgba(255,255,255,.42); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 70px; }
  .hero { padding: 120px 0 90px; }
  .hero-visual { max-width: 620px; margin: 0 auto; width: 100%; }
  .app-inner { grid-template-columns: 1fr; gap: 60px; }
  .app-visual { order: -1; }
  .cards, .testi-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%; height: 100vh; width: min(320px, 82%);
    background: rgba(11,16,38,.97); flex-direction: column; gap: 8px;
    padding: 90px 30px; transition: right .35s ease; z-index: 98;
    backdrop-filter: blur(16px);
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 17px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.07); }
  .menu-toggle { display: flex; }
  .nav-cta { display: none; }
  .section { padding: 76px 0; }
  .cards, .testi-grid, .feature-grid, .gallery-grid, .video-grid { grid-template-columns: 1fr; }
  .poster-strip { padding: 28px 0 32px; }
  .poster-slide { width: 170px; }
  .poster-slide img { height: 220px; }
  .hero-stats { gap: 28px; flex-wrap: wrap; }
  .mockup { transform: none; }
  .float-card { left: -8px; }
  .float-receipt { right: -8px; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 34px; }
  .mockup-body { height: 280px; }
  .mock-cart { width: 120px; }
  .btn-lg { padding: 13px 26px; font-size: 15px; }
  .app-features { grid-template-columns: 1fr; }
  .phone { width: 250px; }
  .phone-screen { height: 500px; }
}