/* roulang page: index */
:root {
  --primary: #0A58CA;
  --primary-deep: #0847a6;
  --primary-2: #0093E9;
  --grad: linear-gradient(135deg, #0A58CA 0%, #0093E9 100%);
  --accent: #10B981;
  --accent-deep: #047857;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --ink: #0F172A;
  --text: #334155;
  --muted: #64748B;
  --line: rgba(226, 232, 240, 0.8);
  --line-strong: #E2E8F0;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 18px 36px -16px rgba(10, 88, 202, 0.28);
  --radius: 20px;
  --radius-sm: 14px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --header: 112px;
  --max: 1160px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: 16px; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3 { color: var(--ink); line-height: 1.25; font-weight: 760; letter-spacing: -0.02em; }
ul { margin: 0; padding: 0; list-style: none; }
.skip {
  position: absolute; left: 12px; top: -40px; z-index: 80;
  background: var(--ink); color: #fff; padding: 8px 12px; border-radius: 8px;
}
.skip:focus { top: 8px; }
.container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { border-bottom-color: var(--line-strong); box-shadow: 0 8px 24px rgba(15,23,42,.05); }
.topbar { background: #F1F5F9; color: var(--muted); font-size: 13px; }
.topbar-inner, .navwrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.topbar-inner { min-height: 38px; }
.topbar strong { color: var(--primary); font-weight: 700; }
.lang-flag {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line-strong); background: #fff; border-radius: 999px;
  padding: 2px 10px; color: var(--ink); font-weight: 650;
}
.navwrap { min-height: 74px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; font-size: 18px; letter-spacing: -0.03em; }
.logo svg { flex: 0 0 auto; }
.nav-toggle {
  display: none; min-width: 44px; min-height: 44px; border-radius: 12px;
  border: 1px solid var(--line-strong); background: #fff; color: var(--ink); padding: 0 12px; font-weight: 700;
}
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  color: var(--text); font-weight: 620; font-size: 15px;
  padding: 8px 10px; border-radius: 999px; min-height: 44px;
  display: inline-flex; align-items: center;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.nav a:hover, .nav a.active { color: var(--primary); background: rgba(10,88,202,.08); }
.nav a:focus-visible, .btn:focus-visible, .chip:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .faq-item button:focus-visible, .nav-toggle:focus-visible {
  outline: 3px solid rgba(10,88,202,.35); outline-offset: 2px;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 720; cursor: pointer; transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 20px -12px rgba(10,88,202,.9); }
.btn-primary:hover { box-shadow: 0 16px 28px -12px rgba(10,88,202,.7); }
.btn-ghost { background: #fff; color: var(--primary); border-color: rgba(10,88,202,.28); }
.btn-ghost:hover { border-color: var(--primary); background: #F8FBFF; }
.nav .btn { margin-left: 8px; color: #fff; background: var(--grad); }
.nav .btn:hover { color: #fff; background: var(--grad); }
.hero {
  position: relative;
  padding: 54px 0 36px;
  background:
    linear-gradient(180deg, rgba(248,250,252,.94) 0%, rgba(248,250,252,.9) 42%, rgba(248,250,252,.96) 100%),
    url("/assets/images/e8933549960928e0.webp") center/cover no-repeat;
  overflow: hidden;
}
.hero-copy { max-width: 860px; margin: 0 auto; text-align: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(16,185,129,.12); color: var(--accent-deep);
  border-radius: 999px; padding: 6px 12px; font-weight: 760; font-size: 13px;
}
.hero h1 { margin: 16px 0 14px; font-size: clamp(32px, 4.4vw, 52px); }
.lead { color: var(--text); font-size: 17px; }
.searchbar {
  margin: 26px auto 0; width: min(740px, 100%);
  display: flex; gap: 8px; padding: 8px; background: #fff;
  border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--shadow);
}
.searchbar input {
  flex: 1; border: 0; min-height: 44px; padding: 0 16px; background: transparent; color: var(--ink);
}
.searchbar input::placeholder { color: #94A3B8; }
.searchbar button { border: 0; }
.search-note { min-height: 1.4em; margin-top: 10px; color: var(--primary); font-weight: 680; font-size: 14px; }
.chip-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 16px; }
.chip {
  display: inline-flex; align-items: center; min-height: 40px; padding: 6px 14px;
  border-radius: 999px; background: rgba(255,255,255,.86); border: 1px solid var(--line);
  color: var(--ink); font-weight: 680; font-size: 14px;
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.chip:hover { transform: translateY(-2px); border-color: rgba(10,88,202,.45); box-shadow: var(--shadow); color: var(--primary); }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.seal-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 760;
  background: rgba(10,88,202,.1); color: var(--primary);
}
.pill.green { background: rgba(16,185,129,.14); color: var(--accent-deep); }
.pill.soft { background: #EEF2FF; color: #3730A3; }
.stage {
  margin-top: 34px; background: #fff; border: 1px solid var(--line); border-radius: 24px;
  box-shadow: var(--shadow); padding: 14px; position: relative;
}
.stage-top { display: flex; justify-content: space-between; align-items: center; padding: 4px 8px 12px; color: var(--ink); font-weight: 760; }
.dots { display: flex; gap: 8px; }
.dots button, .slide-nav button {
  width: 44px; height: 10px; border: 0; border-radius: 999px; background: #DBE7F7; cursor: pointer;
}
.dots button.active { background: var(--primary); }
.slides { position: relative; aspect-ratio: 16/8.2; border-radius: 18px; overflow: hidden; background: #E2E8F0; }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity .45s var(--ease); }
.slide.active { opacity: 1; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.metric-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin: -34px 18px 8px; position: relative; z-index: 2;
}
.metric {
  background: rgba(255,255,255,.95); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow); padding: 14px 14px 12px; text-align: left;
}
.metric b { display: block; color: var(--primary); font-size: 26px; line-height: 1.15; letter-spacing: -0.03em; }
.metric span { display: block; color: var(--muted); font-size: 13px; margin-top: 4px; }
.metric-note { margin: 8px 8px 4px; color: var(--muted); font-size: 12px; }
section { scroll-margin-top: 124px; }
.block { padding: 88px 0; }
.block.alt { background: #fff; }
.block h2 { font-size: clamp(28px, 3vw, 38px); margin-bottom: 12px; }
.intro { max-width: 760px; margin-bottom: 28px; }
.split { display: grid; grid-template-columns: 1.02fr .98fr; gap: 42px; align-items: center; }
.media-frame { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: #E8EEF6; }
.media-frame img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.float-badge {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(255,255,255,.94); border-radius: 14px; padding: 10px 12px;
  box-shadow: var(--shadow); color: var(--ink); font-weight: 760; font-size: 13px;
}
.float-badge small { display: block; color: var(--muted); font-weight: 600; }
.spec-list { display: grid; gap: 10px; margin-top: 18px; }
.spec-list div {
  display: grid; grid-template-columns: 108px 1fr; gap: 10px;
  background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px;
}
.spec-list dt { color: var(--primary); font-weight: 780; }
.spec-list dd { margin: 0; color: var(--text); }
.grid-3, .grid-4, .grid-2 { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  box-shadow: var(--shadow); padding: 22px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(10,88,202,.35); }
.icon-blob {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center;
  background: var(--grad); color: #fff; margin-bottom: 14px;
}
.card h3 { font-size: 20px; margin-bottom: 8px; }
.card p { color: var(--text); }
.card .pill { margin-bottom: 12px; }
.sol-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.sol-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.sol-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.checks li { position: relative; padding: 6px 0 6px 26px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 12px; width: 14px; height: 8px;
  border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg);
}
.sol-card .btn { align-self: flex-start; margin-top: auto; }
#philosophy {
  background:
    linear-gradient(180deg, rgba(15,23,42,.94), rgba(15,23,42,.9)),
    url("/assets/images/f4e8beb76b1c9d24.webp") center/cover no-repeat;
  color: #CBD5E1;
}
#philosophy h2, #philosophy h3 { color: #fff; }
#philosophy .intro { color: #CBD5E1; }
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 22px; }
.pillar {
  border-radius: 20px; padding: 22px; border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.04);
}
.pillar strong { display: block; color: #fff; font-size: 20px; margin-bottom: 6px; }
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 8px; }
.flow li {
  background: rgba(255,255,255,.04); border: 1px solid rgba(148,163,184,.25);
  border-radius: 18px; padding: 16px; min-height: 150px;
}
.flow b {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--grad); color: #fff; font-size: 14px; margin-bottom: 10px;
}
.flow span { display: block; color: #fff; font-weight: 760; margin-bottom: 6px; }
.cmp { display: grid; gap: 12px; }
.cmp-head, .cmp-row { display: grid; grid-template-columns: 180px 1fr 1fr; gap: 12px; }
.cmp-head { color: var(--muted); font-size: 13px; font-weight: 760; padding: 0 8px; }
.cmp-row { align-items: stretch; }
.cmp-label, .cmp-old, .cmp-new {
  border-radius: 16px; padding: 16px; border: 1px solid var(--line); background: #fff;
}
.cmp-label { display: flex; align-items: center; font-weight: 800; color: var(--ink); background: transparent; }
.cmp-new { background: #F0FDF8; border-color: rgba(16,185,129,.28); }
.cmp-new strong, .percent { color: var(--accent-deep); }
.case { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; margin-top: 28px; }
.case + .case { margin-top: 42px; }
.case.reverse .media-frame { order: 2; }
.percent { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 0; right: 0; top: 27px; height: 2px;
  background: linear-gradient(90deg, #0A58CA, #10B981);
}
.mile { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 18px; box-shadow: var(--shadow); }
.mile i {
  display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 4px solid #0A58CA; margin-bottom: 12px; position: relative; z-index: 1;
}
.mile h3 { font-size: 18px; margin-bottom: 8px; }
.quote header { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; margin-bottom: 12px; }
.quote h3 { font-size: 18px; }
.quote .who { color: var(--muted); font-size: 13px; margin-top: 12px; }
.news { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.news-feature { padding: 0; overflow: hidden; }
.news-feature img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.news-feature div, .news-item { padding: 18px 18px 16px; }
.news-list { display: grid; gap: 12px; }
.news-item { display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: center; }
.news-item img { width: 92px; height: 72px; object-fit: cover; border-radius: 12px; }
.date { color: var(--muted); font-size: 13px; font-weight: 700; }
#faq { background:
  linear-gradient(180deg, rgba(248,250,252,.92), rgba(248,250,252,.94)),
  url("/assets/images/8c97569c08cb475c.webp") center/cover;
}
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-wrap .intro { margin-inline: auto; text-align: center; }
.faq-wrap h2 { text-align: center; }
.faq-list { display: grid; gap: 10px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
.faq-item button {
  width: 100%; text-align: left; background: transparent; border: 0; color: var(--ink);
  font-weight: 780; min-height: 58px; padding: 14px 18px; cursor: pointer;
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.faq-item button span { color: var(--primary); font-size: 22px; line-height: 1; }
.faq-item .answer { display: none; padding: 0 18px 16px; color: var(--text); }
.faq-item.open .answer { display: block; }
.faq-item.open { border-color: rgba(10,88,202,.35); }
.contact-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 24px; align-items: stretch; }
.contact-side {
  border-radius: 24px; padding: 28px; color: #E2E8F0; min-height: 100%;
  background:
    linear-gradient(160deg, rgba(10,88,202,.92), rgba(15,23,42,.88)),
    url("/assets/images/90b9dc476386f19f.webp") center/cover;
}
.contact-side h2, .contact-side h3 { color: #fff; }
.contact-side p { color: #E2E8F0; }
.contact-side ul { margin-top: 18px; display: grid; gap: 10px; }
.contact-side li { background: rgba(255,255,255,.08); border-radius: 14px; padding: 12px 14px; }
.form-card h2 { display: none; }
.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field label { font-weight: 720; color: var(--ink); font-size: 14px; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 46px; border-radius: 12px; border: 1px solid #D6DEE8;
  background: #fff; color: var(--ink); padding: 10px 12px;
}
.field textarea { min-height: 96px; resize: vertical; }
.form-note { color: var(--muted); font-size: 13px; margin: 8px 0 12px; }
.form-success { display: none; background: rgba(16,185,129,.12); color: var(--accent-deep); border-radius: 12px; padding: 12px; font-weight: 720; }
.form-success.show { display: block; margin-bottom: 12px; }
.site-footer { background: #0F172A; color: #CBD5E1; padding: 56px 0 22px; }
.foot-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr .9fr; gap: 24px; }
.site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
.site-footer a { display: inline-flex; min-height: 32px; align-items: center; color: #E2E8F0; }
.site-footer a:hover { color: #7DD3FC; }
.site-footer .logo { color: #fff; margin-bottom: 10px; }
.legal {
  margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(148,163,184,.25);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  color: #94A3B8; font-size: 13px;
}
@media (max-width: 1280px) {
  .nav a { padding: 8px; font-size: 14px; }
  .metric b { font-size: 22px; }
}
@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav {
    display: none; position: fixed; inset: 112px 0 0 0; z-index: 39;
    background: rgba(255,255,255,.98); flex-direction: column; align-items: stretch;
    padding: 16px; gap: 4px; overflow: auto;
  }
  .site-header.open .nav { display: flex; }
  .nav a, .nav .btn { width: 100%; margin: 0; justify-content: flex-start; }
  .grid-3, .news, .split, .contact-grid, .pillars, .case, .case.reverse { grid-template-columns: 1fr; }
  .case.reverse .media-frame { order: 0; }
  .grid-4, .flow, .timeline { grid-template-columns: 1fr 1fr; }
  .timeline::before { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .top-mid { display: none; }
}
@media (max-width: 768px) {
  .container, .topbar-inner, .navwrap { width: min(var(--max), calc(100% - 28px)); }
  .block { padding: 60px 0; }
  .hero { padding-top: 32px; }
  .metric-bar, .cmp-head, .cmp-row, .grid-4, .flow, .timeline, .grid-2, .news-item { grid-template-columns: 1fr; }
  .cmp-head { display: none; }
  .spec-list div { grid-template-columns: 1fr; gap: 4px; }
  .hero-actions .btn, .searchbar { width: 100%; }
  .searchbar { border-radius: 20px; flex-direction: column; }
  .slides { aspect-ratio: 4/3; }
  .foot-grid, .legal { grid-template-columns: 1fr; display: grid; }
}
@media (max-width: 375px) {
  .hero h1 { font-size: 28px; }
  .logo span { font-size: 16px; }
  .metric b { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}