/* roulang page: index */
:root {
  --c-primary: #1F6AA8;
  --c-primary-deep: #1C619B;
  --c-accent: #139BB3;
  --bg: #F5F8FC;
  --bg-alt: #EAF1F8;
  --card: #FFFFFF;
  --text: #1C2430;
  --muted: #5B6775;
  --line: #D7E2EC;
  --metal: #8A97A6;
  --dark: #102536;
  --dark-2: #173044;
  --on-dark: #F3F7FB;
  --danger: #B44545;
  --ok: #2A7A62;
  --radius: 10px;
  --shadow: 0 8px 28px rgba(31, 106, 168, .10);
  --shadow-hover: 0 12px 32px rgba(31, 106, 168, .16);
  --container: 1240px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --section: 104px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--c-primary-deep); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: 0; background: none; }
ul, ol, dl, p, h1, h2, h3, figure { margin: 0; }
h1, h2, h3 { line-height: 1.28; font-weight: 650; letter-spacing: .01em; color: var(--text); }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; }
.skip {
  position: absolute; left: -999px; top: 0; background: #fff; padding: 8px 12px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }
.container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
.num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 22px; border-radius: 8px; font-weight: 600;
  letter-spacing: .02em; transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 8px 18px rgba(31,106,168,.22); }
.btn-primary:hover { background: var(--c-primary-deep); color: #fff; }
.btn-ghost { background: transparent; color: var(--c-primary); border: 1px solid var(--c-primary); }
.btn-ghost:hover { background: rgba(31,106,168,.06); color: var(--c-primary-deep); border-color: var(--c-primary-deep); }
.btn-text { color: var(--c-accent); padding: 0; min-height: 36px; border-radius: 0; box-shadow: none; text-decoration: underline; text-underline-offset: 4px; }
.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { background: #f3f8fc; color: var(--c-primary-deep); }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 10px; border-radius: 6px; font-size: 12px; color: var(--c-primary);
  background: rgba(31,106,168,.08); border: 1px solid rgba(31,106,168,.16);
}
.tag {
  display: inline-flex; align-items: center; height: 26px; padding: 0 9px;
  border-radius: 4px; font-size: 12px; color: #2d5f7a; background: #e8f3f8; border: 1px solid #d3e6ef;
}

.site-header { position: sticky; top: 0; z-index: 50; background: #fff; }
.site-header.is-stuck .navbar { box-shadow: 0 8px 20px rgba(16,37,54,.08); }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 36px; padding: 6px 0; background: #E8EEF4; color: #3d4c5a; font-size: 12.5px;
}
.topbar a { color: #3d4c5a; }
.topbar a:hover { color: var(--c-primary); }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.dot-split { width: 1px; height: 12px; background: #c5d2de; display: inline-block; }
.navbar {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  min-height: 68px; background: #fff; border-bottom: 1px solid var(--line);
}
.logo {
  display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 16px; font-weight: 700; letter-spacing: .04em; white-space: nowrap;
}
.logo-mark {
  width: 28px; height: 28px; border-radius: 6px; position: relative;
  background: linear-gradient(180deg, #2a86c9, var(--c-primary));
  box-shadow: 0 0 0 1px rgba(19,155,179,.25);
}
.logo-mark::after {
  content: ""; position: absolute; left: 6px; right: 6px; top: 13px; height: 2px;
  background: #d9f4f8; box-shadow: 0 0 8px #9be7f2;
}
.menu { display: flex; align-items: center; gap: 4px; list-style: none; padding: 0; margin: 0; }
.menu a {
  position: relative; display: inline-flex; align-items: center; min-height: 44px;
  padding: 0 12px; color: var(--text); font-size: 15px;
}
.menu a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 10px; height: 2px;
  background: var(--c-primary); transform: scaleX(0); transform-origin: left; transition: transform .2s var(--ease);
}
.menu a:hover, .menu a.is-active { color: var(--c-primary); }
.menu a:hover::after, .menu a.is-active::after { transform: scaleX(1); }
.nav-cta { flex-shrink: 0; }
.menu-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 8px; position: relative;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  position: absolute; left: 12px; width: 18px; height: 2px; background: var(--text); border-radius: 1px; transition: .2s var(--ease);
}
.menu-toggle span { top: 21px; }
.menu-toggle span::before, .menu-toggle span::after { content: ""; left: 0; }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }
body.nav-open .menu-toggle span { background: transparent; }
body.nav-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }
.drawer-mask {
  display: none; position: fixed; inset: 0; background: rgba(16,37,54,.42); z-index: 70;
}
.drawer {
  position: fixed; top: 0; right: 0; width: min(86vw, 360px); height: 100%;
  background: #fff; z-index: 80; transform: translateX(100%); transition: transform .3s var(--ease);
  padding: 88px 24px 32px; display: flex; flex-direction: column; gap: 8px;
  box-shadow: -12px 0 32px rgba(16,37,54,.12);
}
body.nav-open { overflow: hidden; }
body.nav-open .drawer { transform: none; }
body.nav-open .drawer-mask { display: block; }
.drawer a { color: var(--text); min-height: 48px; display: flex; align-items: center; border-bottom: 1px solid var(--line); font-size: 16px; }
.drawer .btn { margin-top: 16px; width: 100%; }

.hero {
  position: relative; min-height: 640px; color: var(--on-dark); overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), 0 100%);
}
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide {
  background: #102536 center/cover no-repeat;
  opacity: 0; transition: opacity 450ms var(--ease); z-index: 0;
}
.hero-slide.is-on { opacity: 1; z-index: 1; }
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(16,37,54,.72) 0%, rgba(16,37,54,.42) 48%, rgba(16,37,54,.18) 100%),
    repeating-linear-gradient(90deg, rgba(215,226,236,.08) 0 1px, transparent 1px 48px);
}
.hero-inner { position: relative; z-index: 3; padding: 54px 0 92px; }
.series-nav {
  display: flex; gap: 6px; overflow-x: auto; margin-bottom: 28px; padding-bottom: 4px;
  scrollbar-width: none;
}
.series-nav::-webkit-scrollbar { display: none; }
.series-nav button, .series-nav a {
  flex: 0 0 auto; min-height: 36px; padding: 0 14px; border-radius: 6px;
  color: #e8f2f6; border: 1px solid rgba(255,255,255,.22); background: rgba(16,37,54,.28);
  font-size: 13px; white-space: nowrap;
}
.series-nav button.is-on, .series-nav a:hover, .series-nav button:hover {
  background: rgba(19,155,179,.22); border-color: var(--c-accent); color: #fff;
}
.brand-kicker { font-size: 14px; letter-spacing: .18em; color: #bfe4ec; margin-bottom: 12px; }
.hero h1 { font-size: 44px; color: #fff; max-width: 16ch; margin-bottom: 12px; }
.hero-sub { font-size: 18px; color: #dceaf1; margin-bottom: 16px; max-width: 28ch; }
.hero-lead { max-width: 62ch; color: #d5e3eb; font-size: 16px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-ctrl {
  position: absolute; z-index: 4; left: 0; right: 0; bottom: 64px;
  display: flex; align-items: center; justify-content: space-between;
  width: min(100% - 40px, var(--container)); margin: 0 auto;
}
.hero-arrows { display: flex; gap: 8px; }
.hero-arrows button, .dots button {
  width: 44px; height: 44px; border-radius: 8px; border: 1px solid rgba(255,255,255,.28);
  color: #fff; background: rgba(16,37,54,.28);
}
.hero-arrows button:hover, .dots button:hover { border-color: var(--c-accent); }
.dots { display: flex; gap: 8px; }
.dots button { width: 10px; height: 10px; min-width: 10px; padding: 0; border-radius: 50%; height: 10px; width: 10px; min-height: 10px; }
.dots button.is-on { background: var(--c-accent); border-color: var(--c-accent); }

.section { padding: var(--section) 0; position: relative; }
.section-head { max-width: 760px; margin-bottom: 36px; }
.section-head h2 { font-size: 28px; margin-bottom: 12px; }
.section-head h2::after {
  content: ""; display: block; width: 36px; height: 2px; background: var(--c-primary); margin-top: 12px;
}
.section-head p { color: var(--muted); }
.bg-white { background: #fff; }
.bg-soft { background: var(--bg); }
.bg-alt { background: var(--bg-alt); }

.intro-grid {
  display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center;
}
.intro-visual { position: relative; }
.intro-visual img { width: 100%; height: 460px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); }
.beam-line {
  position: absolute; left: -12px; top: 28px; width: 2px; height: 120px;
  background: linear-gradient(to bottom, var(--c-accent), transparent);
}
.spot {
  position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); opacity: .45;
}
.spot-a { right: 18px; top: 18px; }
.spot-b { left: 24px; bottom: 36px; width: 6px; height: 6px; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
.spec-table {
  width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.spec-table th, .spec-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.spec-table th { width: 34%; color: var(--muted); font-weight: 500; background: #f7fafc; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.compare {
  margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.compare article {
  padding: 16px 18px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line);
}
.compare h3 { font-size: 16px; margin-bottom: 6px; }
.compare p { font-size: 14px; color: var(--muted); }

.bento {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-auto-rows: minmax(160px, auto); gap: 16px;
}
.bento-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.bento-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
.bento-wide { grid-column: 1; grid-row: 1 / span 2; padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.bento-wide img { width: 100%; height: 230px; object-fit: cover; }
.bento-wide .pad { padding: 22px; }
.bento-item h3 { font-size: 18px; margin-bottom: 10px; }
.bento-item ul { padding-left: 18px; color: var(--muted); font-size: 14.5px; }
.bento-item li + li { margin-top: 4px; }

.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.adv-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.adv-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
.adv-no { font-size: 13px; color: var(--c-accent); letter-spacing: .12em; margin-bottom: 8px; }
.adv-card h3 { font-size: 18px; margin-bottom: 8px; }
.adv-card p { color: var(--muted); font-size: 14.5px; min-height: 4.8em; }
.microbar {
  margin-top: 16px; height: 6px; border-radius: 99px; background: #e4eef4; overflow: hidden;
}
.microbar span { display: block; height: 100%; width: var(--w, 70%); background: linear-gradient(90deg, var(--c-accent), #7fd0dc); }

.metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.metric {
  background: #fff; padding: 28px 22px; text-align: left;
}
.metric strong { display: block; font-size: 36px; color: var(--c-primary); line-height: 1.1; margin-bottom: 8px; }
.metric span { color: var(--muted); font-size: 14px; }
.metric em { font-style: normal; font-size: 16px; color: var(--c-accent); margin-left: 4px; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.product:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
.product img { width: 100%; height: 210px; object-fit: cover; }
.product-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.product h3 { font-size: 18px; }
.product dl { display: grid; grid-template-columns: 88px 1fr; gap: 6px 10px; font-size: 14px; }
.product dt { color: var(--muted); }
.product dd { margin: 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.product .btn { margin-top: auto; align-self: flex-start; }

.timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 0; right: 0; top: 18px; height: 1px; background: var(--line);
}
.step { padding: 0 14px 0 0; position: relative; }
.step-index {
  width: 36px; height: 36px; border-radius: 50%; background: #fff; border: 1px solid var(--c-primary);
  color: var(--c-primary); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
  position: relative; z-index: 1; margin-bottom: 16px;
}
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14px; }
.io { margin-top: 10px; font-size: 12.5px; color: #3e6a7e; background: #eaf5f8; display: inline-block; padding: 4px 8px; border-radius: 4px; }

.case-band {
  background: var(--dark) url("/assets/images/7bdddde6a40d80af.webp") center/cover no-repeat;
  color: var(--on-dark); padding: 72px 0; position: relative;
}
.case-band::before {
  content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(16,37,54,.92), rgba(16,37,54,.78) 55%, rgba(16,37,54,.6));
}
.case-band .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.case-band h2 { color: #fff; font-size: 28px; }
.case-band h2::after { background: var(--c-accent); }
.case-band p { color: #d5e3eb; }
.idea-list { list-style: none; padding: 0; display: grid; gap: 12px; }
.idea-list li {
  padding-left: 18px; border-left: 2px solid var(--c-accent); color: #e7eef3; font-size: 15px;
}
.case-wall {
  display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-template-rows: 220px 220px 240px; gap: 16px; margin-top: 28px;
}
.case-card {
  position: relative; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line); background: #0f2433;
}
.case-a { grid-column: 1; grid-row: 1 / span 2; }
.case-b { grid-column: 2; grid-row: 1; }
.case-c { grid-column: 3; grid-row: 1; }
.case-d { grid-column: 2; grid-row: 2; }
.case-e { grid-column: 3; grid-row: 2; }
.case-f { grid-column: 1 / span 3; grid-row: 3; }
.case-card img { width: 100%; height: 100%; object-fit: cover; opacity: .88; }
.case-meta {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 18px;
  background: linear-gradient(transparent, rgba(16,37,54,.88)); color: #fff;
}
.case-meta h3 { color: #fff; font-size: 16px; margin-bottom: 4px; }
.case-meta p { color: #d5e3eb; font-size: 13px; }

.stories { display: grid; grid-template-columns: 1.55fr .9fr; gap: 20px; }
.story-main, .story-side article {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.story-main img { width: 100%; height: 280px; object-fit: cover; }
.story-main .pad, .story-side .pad { padding: 22px; }
.quote { font-size: 18px; line-height: 1.7; margin-bottom: 12px; }
.story-side { display: grid; gap: 16px; }
.story-side h3, .story-main h3 { font-size: 18px; margin-bottom: 8px; }
.story-side p, .story-main p { color: var(--muted); font-size: 14.5px; }

.stats-wrap { border-top: 2px solid var(--c-primary); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 8px 8px; }
.stats { display: grid; grid-template-columns: repeat(5, 1fr); }
.stat { padding: 24px 16px; text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 1px; background: var(--line);
}
.stat strong { display: block; font-size: 32px; color: var(--c-primary); }
.stat span { color: var(--muted); font-size: 13.5px; }

.review-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; }
.review {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px;
}
.stars { color: #d39b2f; letter-spacing: 2px; font-size: 14px; margin-bottom: 10px; }
.review p { color: var(--text); font-size: 15px; margin-bottom: 14px; }
.review-who { color: var(--muted); font-size: 13px; }

.news-layout { display: grid; grid-template-columns: 1.25fr .85fr; gap: 20px; }
.news-feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.news-feature img { width: 100%; height: 260px; object-fit: cover; }
.news-feature .pad, .news-list a .pad { padding: 20px 22px; }
.news-list { display: grid; gap: 12px; }
.news-list a {
  display: grid; grid-template-columns: 118px 1fr; gap: 12px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: var(--text);
  box-shadow: var(--shadow); transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.news-list a:hover { border-color: rgba(31,106,168,.35); transform: translateY(-2px); color: var(--text); }
.news-list img { width: 118px; height: 100%; object-fit: cover; min-height: 108px; }
.date { font-size: 12px; color: var(--c-accent); margin-bottom: 6px; }
.news-feature h3, .news-list h3 { font-size: 18px; margin-bottom: 8px; }
.news-feature p, .news-list p { color: var(--muted); font-size: 14px; }

.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.partner {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px;
  min-height: 118px; transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.partner:hover { border-color: var(--c-accent); transform: translateY(-2px); }
.partner h3 { font-size: 16px; margin-bottom: 6px; }
.partner p { font-size: 13.5px; color: var(--muted); }

.faq-list { display: grid; gap: 10px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.faq-item button {
  width: 100%; text-align: left; min-height: 56px; padding: 14px 52px 14px 20px; position: relative; color: var(--text); font-weight: 600;
}
.faq-item button::after {
  content: ""; position: absolute; right: 20px; top: 50%; width: 10px; height: 10px;
  border-right: 2px solid var(--c-primary); border-bottom: 2px solid var(--c-primary);
  transform: translateY(-70%) rotate(45deg); transition: transform .2s var(--ease);
}
.faq-item button[aria-expanded="true"]::after { transform: translateY(-20%) rotate(225deg); }
.faq-panel { display: none; padding: 0 20px 18px; color: var(--muted); }
.faq-item.is-open .faq-panel { display: block; }

.guarantee {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  background: #eaf3f9; border: 1px solid #d5e4ef; border-radius: var(--radius); padding: 18px;
}
.g-item { display: grid; grid-template-columns: 36px 1fr; gap: 10px; align-items: start; min-height: 72px; }
.g-ico {
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid #b9d3e4; display: flex; align-items: center; justify-content: center; color: var(--c-primary);
}
.g-item h3 { font-size: 16px; margin-bottom: 4px; }
.g-item p { font-size: 13.5px; color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
.contact-card, .form-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.contact-card { padding: 28px; }
.form-card { padding: 28px; }
.slots { display: grid; gap: 8px; margin: 18px 0; }
.slot {
  display: flex; justify-content: space-between; gap: 12px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; font-size: 14px; background: #f8fbfd;
}
.slot b { font-weight: 650; }
.ok { color: var(--ok); }
.warn { color: #a15c12; }
.muted { color: var(--muted); }
.contact-list { list-style: none; padding: 0; display: grid; gap: 8px; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; color: var(--text); }
.req { color: var(--danger); margin-left: 2px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; min-height: 44px; padding: 8px 12px; background: #fff; color: var(--text);
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--c-accent); }
.field.is-error input, .field.is-error select { border-color: var(--danger); }
.form-note { margin-top: 10px; font-size: 13px; color: var(--muted); }
.form-ok, .form-bad {
  padding: 12px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px;
}
.form-ok { background: #e8f6f0; color: #215e4c; border: 1px solid #b7dece; }
.form-bad { background: #fdeeee; color: #8a3030; border: 1px solid #f0c7c7; }
.form-card .btn { margin-top: 8px; }

.site-footer { background: #0f2433; color: #d5e3eb; padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap: 28px; padding-bottom: 36px; }
.footer-logo { color: #fff; font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.site-footer h3 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.site-footer a { color: #d5e3eb; }
.site-footer a:hover { color: #fff; }
.foot-links { list-style: none; padding: 0; display: grid; gap: 8px; }
.copy {
  border-top: 1px solid rgba(215,226,236,.16); padding: 16px 0 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: #9aafbd;
}

@media (max-width: 1280px) {
  :root { --section: 92px; }
  .hero h1 { font-size: 40px; }
  .case-wall { grid-template-rows: 200px 200px 220px; }
}
@media (max-width: 1024px) {
  :root { --section: 80px; }
  .menu { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .intro-grid, .case-band .container, .stories, .news-layout, .contact-grid { grid-template-columns: 1fr; }
  .bento { grid-template-columns: 1fr 1fr; }
  .bento-wide { grid-column: 1 / span 2; grid-row: auto; }
  .adv-grid, .product-grid, .partner-grid { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; gap: 22px; }
  .timeline::before { display: none; }
  .metrics, .stats { grid-template-columns: 1fr 1fr; }
  .stat + .stat::before { display: none; }
  .review-grid { grid-template-columns: 1fr 1fr; }
  .case-wall { grid-template-columns: 1fr 1fr; grid-template-rows: 220px 180px 180px 220px; }
  .case-a { grid-column: 1 / span 2; grid-row: 1; }
  .case-b { grid-column: 1; grid-row: 2; }
  .case-c { grid-column: 2; grid-row: 2; }
  .case-d { grid-column: 1; grid-row: 3; }
  .case-e { grid-column: 2; grid-row: 3; }
  .case-f { grid-column: 1 / span 2; grid-row: 4; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 580px; }
  .intro-visual img { height: 360px; }
}
@media (max-width: 768px) {
  :root { --section: 64px; }
  .container { width: min(100% - 32px, var(--container)); }
  .topbar { font-size: 12px; }
  .hero { min-height: 560px; clip-path: none; }
  .hero h1 { font-size: 30px; max-width: none; }
  .hero-sub { font-size: 16px; }
  .hero-lead { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .hero-inner { padding: 36px 0 86px; }
  .section-head h2, .case-band h2 { font-size: 24px; }
  .bento, .adv-grid, .product-grid, .partner-grid, .metrics, .stats, .review-grid, .guarantee, .form-grid, .compare { grid-template-columns: 1fr; }
  .bento-wide { grid-column: auto; }
  .timeline { grid-template-columns: 1fr; }
  .case-wall { grid-template-columns: 1fr; grid-template-rows: none; }
  .case-a, .case-b, .case-c, .case-d, .case-e, .case-f { grid-column: auto; grid-row: auto; min-height: 210px; }
  .news-list a { grid-template-columns: 96px 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .copy { flex-direction: column; }
  .product .btn, .form-card .btn { width: 100%; }
  .intro-visual img, .story-main img { height: 240px; }
}
@media (max-width: 375px) {
  .hero h1 { font-size: 28px; }
  .topbar-left span:nth-child(3), .dot-split { display: none; }
  .guarantee { grid-template-columns: 1fr 1fr; }
  .metric strong, .stat strong { font-size: 28px; }
  .btn { width: 100%; }
  .hero-actions .btn { width: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* roulang page: index */
:root {
      --c-primary: #1F6AA8;
      --c-primary-dark: #185A90;
      --c-primary-deep: #154E7C;
      --c-accent: #139BB3;
      --c-accent-soft: #D7F1F5;
      --bg: #F5F8FC;
      --bg-soft: #EEF4FA;
      --card: #FFFFFF;
      --text: #1C2430;
      --muted: #5B6775;
      --line: #D7E2EC;
      --metal: #8A97A6;
      --dark: #102536;
      --dark-2: #16344A;
      --near-white: #F4F8FB;
      --danger: #B4232C;
      --ok: #1F7A4D;
      --radius: 10px;
      --shadow: 0 8px 28px rgba(31, 106, 168, .10);
      --shadow-hover: 0 12px 32px rgba(31, 106, 168, .16);
      --container: 1220px;
      --nav-h: 112px;
      --ease: cubic-bezier(.22, .7, .28, 1);
      --pad-y: 104px;
      --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      overflow-x: hidden;
    }
    body.is-locked { overflow: hidden; }
    img { max-width: 100%; height: auto; display: block; border: 0; }
    a { color: var(--c-primary); text-decoration: none; transition: color .2s var(--ease), opacity .2s var(--ease); }
    a:hover { color: var(--c-primary-deep); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; }
    ul { padding: 0; list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible {
      outline: 2px solid var(--c-accent);
      outline-offset: 3px;
    }
    .skip {
      position: absolute; left: -999px; top: 0;
      background: var(--c-primary); color: #fff; padding: 8px 14px; z-index: 100;
    }
    .skip:focus { left: 12px; top: 12px; }
    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky; top: 0; z-index: 50; background: #fff;
    }
    .topbar {
      background: #E8F0F7;
      color: #3E4C5A;
      font-size: 13px;
      line-height: 1.4;
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 38px; gap: 16px;
    }
    .topbar a { color: #3E4C5A; }
    .topbar a:hover { color: var(--c-primary); }
    .top-left, .top-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .dot-split::before {
      content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%;
      background: var(--c-accent); margin-right: 8px; vertical-align: middle;
    }
    .mainbar {
      background: #fff; border-bottom: 1px solid var(--line);
      transition: box-shadow .25s var(--ease);
    }
    .site-header.is-stuck .mainbar { box-shadow: 0 8px 20px rgba(16, 37, 54, .06); }
    .mainbar-inner {
      min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--text); flex-shrink: 0;
      font-size: 16px; font-weight: 700; letter-spacing: .04em;
    }
    .logo:hover { color: var(--c-primary); }
    .logo-mark {
      width: 28px; height: 28px; position: relative; display: grid; place-items: center;
    }
    .logo-mark span {
      position: absolute; background: var(--c-primary); border-radius: 1px;
    }
    .logo-mark .l1 { width: 18px; height: 2px; top: 8px; left: 5px; }
    .logo-mark .l2 { width: 12px; height: 2px; top: 14px; left: 8px; background: var(--c-accent); }
    .logo-mark .dot { width: 5px; height: 5px; border-radius: 50%; right: 3px; top: 6px; background: var(--c-accent); left: auto; }
    .nav-desktop { display: flex; align-items: center; gap: 4px; }
    .nav-desktop a {
      position: relative; color: var(--text); font-size: 15px; padding: 10px 12px; white-space: nowrap;
    }
    .nav-desktop a::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px;
      background: var(--c-primary); transform: scaleX(0); transform-origin: left; transition: transform .2s var(--ease);
    }
    .nav-desktop a:hover, .nav-desktop a.is-active { color: var(--c-primary); }
    .nav-desktop a:hover::after, .nav-desktop a.is-active::after { transform: scaleX(1); }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 20px; border-radius: 8px; font-weight: 600; font-size: 15px;
      transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
      border: 1px solid transparent;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-primary { background: var(--c-primary); color: #fff; }
    .btn-primary:hover { background: var(--c-primary-dark); color: #fff; box-shadow: var(--shadow); }
    .btn-ghost { background: transparent; color: var(--c-primary); border-color: var(--c-primary); }
    .btn-ghost:hover { background: rgba(31,106,168,.06); color: var(--c-primary-deep); }
    .btn-light { background: #fff; color: var(--c-primary-deep); }
    .btn-light:hover { color: var(--c-primary); }
    .btn-text { color: var(--c-accent); padding: 0; min-height: auto; border-radius: 0; background: none; box-shadow: none; }
    .btn-text:hover { color: var(--c-primary); transform: none; text-decoration: underline; text-underline-offset: 4px; }
    .nav-cta { flex-shrink: 0; }
    .burger {
      display: none; width: 44px; height: 44px; place-items: center; border-radius: 8px; border: 1px solid var(--line);
    }
    .burger span, .burger::before, .burger::after {
      display: block; width: 18px; height: 2px; background: var(--text); content: ""; transition: transform .2s var(--ease), opacity .2s;
    }
    .burger span { margin: 4px 0; }
    .drawer {
      position: fixed; inset: 0 0 0 auto; width: min(86vw, 360px); background: #fff;
      z-index: 80; transform: translateX(100%); transition: transform .28s var(--ease);
      box-shadow: -12px 0 40px rgba(16,37,54,.12); padding: 24px 22px 40px; display: flex; flex-direction: column; gap: 8px;
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer-backdrop {
      position: fixed; inset: 0; background: rgba(16,37,54,.35); z-index: 70; opacity: 0; pointer-events: none; transition: opacity .28s;
    }
    .drawer-backdrop.is-open { opacity: 1; pointer-events: auto; }
    .drawer a {
      display: block; color: var(--text); padding: 12px 8px; border-bottom: 1px solid var(--line); font-size: 16px;
    }
    .drawer a:hover { color: var(--c-primary); }
    .drawer .btn { margin-top: 16px; width: 100%; }
    .hero {
      position: relative; min-height: 640px; color: #F7FBFE; overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 94%, 0 100%);
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      transition: opacity .45s var(--ease), visibility .45s;
      background-size: cover; background-position: center;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(16,37,54,.62) 0%, rgba(16,37,54,.28) 48%, rgba(245,248,252,.12) 100%);
    }
    .slide-1 { background-image: url("/assets/images/15133a7ba83c3592.webp"); }
    .slide-2 { background-image: url("/assets/images/b9308453c90904a5.webp"); }
    .slide-3 { background-image: url("/assets/images/f74b600c8bd2ff42.webp"); }
    .hero-grid {
      position: relative; z-index: 2; min-height: 640px;
      display: grid; align-content: end; padding: 84px 0 92px;
    }
    .hero-kicker {
      display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: .12em;
      color: #D7F3F7; margin-bottom: 14px;
    }
    .hero-kicker::before { content: ""; width: 28px; height: 1px; background: var(--c-accent); }
    .hero h1, .slide-title {
      font-size: 44px; line-height: 1.22; font-weight: 700; max-width: 16em; color: #fff;
    }
    .hero-lead {
      margin-top: 18px; max-width: 640px; color: #E7EEF4; font-size: 16px; line-height: 1.75;
      display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .series-bar {
      margin-top: 36px; display: flex; flex-wrap: wrap; gap: 8px;
      padding: 10px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
      backdrop-filter: blur(6px); border-radius: 10px; width: fit-content; max-width: 100%;
    }
    .series-bar button, .series-bar a {
      color: #F4FBFD; font-size: 13px; padding: 8px 12px; border-radius: 6px; min-height: 36px;
      display: inline-flex; align-items: center; border: 1px solid transparent;
    }
    .series-bar button.is-on, .series-bar a:hover, .series-bar button:hover {
      background: rgba(19,155,179,.28); border-color: rgba(19,155,179,.7); color: #fff;
    }
    .hero-ctrl {
      position: absolute; z-index: 3; right: max(20px, calc((100% - var(--container)) / 2));
      bottom: 78px; display: flex; align-items: center; gap: 10px;
    }
    .hero-arrow {
      width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.45);
      color: #fff; display: grid; place-items: center; background: rgba(16,37,54,.25);
    }
    .hero-arrow:hover { background: var(--c-primary); border-color: var(--c-primary); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 22px; height: 4px; border-radius: 4px; background: rgba(255,255,255,.4);
    }
    .hero-dots button.is-on { background: var(--c-accent); width: 32px; }
    .beam {
      position: absolute; pointer-events: none; z-index: 2;
      background: linear-gradient(90deg, transparent, rgba(19,155,179,.7), transparent); height: 1px;
    }
    .beam-a { left: 8%; right: 30%; top: 18%; }
    .spot {
      position: absolute; width: 8px; height: 8px; border-radius: 50%; background: rgba(19,155,179,.7);
      box-shadow: 0 0 16px rgba(19,155,179,.6); z-index: 2; pointer-events: none;
    }
    .spot-a { top: 16%; left: 18%; }
    main { overflow: hidden; }
    .section { padding: var(--pad-y) 0; position: relative; }
    .section-head { max-width: 720px; margin-bottom: 36px; }
    .section-head h2 {
      font-size: 28px; line-height: 1.3; font-weight: 700; color: var(--text);
    }
    .section-head p { margin-top: 12px; color: var(--muted); }
    .eyebrow {
      font-size: 13px; color: var(--c-primary); letter-spacing: .08em; margin-bottom: 8px; display: inline-block;
    }
    .intro { background: #fff; }
    .intro-grid {
      display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center;
    }
    .intro-photo {
      position: relative; border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow); border: 1px solid var(--line);
    }
    .intro-photo img { width: 100%; height: 460px; object-fit: cover; }
    .intro-photo::after {
      content: ""; position: absolute; left: 18px; top: 18px; bottom: 18px; width: 1px; background: var(--c-accent);
    }
    .badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 6px;
      background: var(--bg-soft); color: var(--c-primary-deep); border: 1px solid var(--line); font-size: 13px;
    }
    .badge i {
      width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); display: inline-block;
    }
    .spec-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
    .spec-table th, .spec-table td {
      padding: 10px 14px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--line);
    }
    .spec-table th { width: 38%; background: var(--bg-soft); color: var(--muted); font-weight: 500; }
    .spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
    .capability { background: var(--bg); }
    .bento {
      display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-auto-rows: minmax(160px, auto); gap: 16px;
    }
    .bento-item {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px; transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;
    }
    .bento-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
    .bento-wide {
      grid-column: 1 / 2; grid-row: 1 / 3; padding: 0; overflow: hidden; display: flex; flex-direction: column;
    }
    .bento-wide img { width: 100%; height: 230px; object-fit: cover; }
    .bento-wide .pad { padding: 22px; }
    .bento-item h3 { font-size: 18px; margin-bottom: 10px; }
    .bento-item li {
      position: relative; padding-left: 14px; color: var(--muted); font-size: 14px; line-height: 1.7;
    }
    .bento-item li::before {
      content: ""; position: absolute; left: 0; top: .7em; width: 6px; height: 1px; background: var(--c-accent);
    }
    .more-link { display: inline-block; margin-top: 12px; font-size: 14px; color: var(--c-accent); }
    .advantages { background: #fff; }
    .card-grid-3 {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
    }
    .adv-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 22px; min-height: 100%;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;
    }
    .adv-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
    .adv-no {
      font-variant-numeric: tabular-nums; font-size: 13px; color: var(--c-primary); letter-spacing: .08em;
      display: flex; align-items: center; gap: 8px; margin-bottom: 10px;
    }
    .adv-no::after { content: ""; flex: 1; height: 1px; background: var(--line); }
    .adv-card h3 { font-size: 18px; margin-bottom: 8px; }
    .adv-card p { color: var(--muted); font-size: 15px; min-height: 4.8em; }
    .micro-bar {
      margin-top: 16px; background: var(--c-accent-soft); color: #0F5E6C; font-size: 12px;
      padding: 8px 10px; border-radius: 6px; font-variant-numeric: tabular-nums;
    }
    .metrics { background: var(--bg-soft); padding: 56px 0; }
    .metrics-row {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line);
      border-radius: var(--radius); background: #fff; overflow: hidden;
    }
    .metric {
      padding: 28px 22px; text-align: left; border-right: 1px solid var(--line);
    }
    .metric:last-child { border-right: 0; }
    .metric strong {
      display: block; font-size: 36px; line-height: 1.1; color: var(--c-primary);
      font-variant-numeric: tabular-nums; font-weight: 700;
    }
    .metric span { color: var(--muted); font-size: 14px; display: block; margin-top: 6px; }
    .metric em { font-style: normal; font-size: 16px; margin-left: 4px; color: var(--c-accent); }
    .products { background: var(--bg); }
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .product-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
      box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;
    }
    .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(31,106,168,.35); }
    .product-card img { width: 100%; height: 210px; object-fit: cover; }
    .product-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
    .product-body h3 { font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .tags { display: flex; flex-wrap: wrap; gap: 6px; }
    .tag {
      font-size: 12px; color: var(--c-primary-deep); background: var(--bg-soft); border: 1px solid var(--line);
      padding: 3px 8px; border-radius: 999px;
    }
    .params { display: grid; gap: 6px; }
    .params div { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; border-bottom: 1px dashed var(--line); padding-bottom: 4px; }
    .params dt { color: var(--muted); }
    .params dd { margin: 0; color: var(--text); font-variant-numeric: tabular-nums; }
    .process { background: #fff; }
    .timeline {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative;
    }
    .timeline::before {
      content: ""; position: absolute; left: 0; right: 0; top: 18px; height: 1px; background: var(--line);
    }
    .step { padding: 0 16px 0 0; position: relative; }
    .step-index {
      width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--c-primary);
      background: #fff; color: var(--c-primary); display: grid; place-items: center;
      font-size: 13px; font-variant-numeric: tabular-nums; position: relative; z-index: 1;
    }
    .step h3 { font-size: 18px; margin: 16px 0 8px; }
    .step p { color: var(--muted); font-size: 14px; }
    .io {
      margin-top: 10px; font-size: 12px; color: #0F5E6C; background: var(--c-accent-soft); padding: 8px 10px; border-radius: 6px;
    }
    .cases { padding-top: 0; }
    .dark-band {
      background: var(--dark) url("/assets/images/7bdddde6a40d80af.webp") center/cover no-repeat;
      color: var(--near-white); padding: 72px 0 64px; position: relative;
    }
    .dark-band::before {
      content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(16,37,54,.92), rgba(16,37,54,.78) 55%, rgba(16,37,54,.55));
    }
    .dark-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
    .dark-inner h2 { font-size: 28px; color: #fff; }
    .dark-inner p { margin-top: 12px; color: #D5E0E8; }
    .idea-list { display: grid; gap: 14px; }
    .idea-list li {
      border-left: 2px solid var(--c-accent); padding: 8px 0 8px 14px; color: #E7EEF4;
    }
    .case-wall { padding: 56px 0 0; }
    .masonry {
      display: grid; grid-template-columns: 1.3fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .case-card {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
      transition: transform .2s var(--ease), box-shadow .2s var(--ease);
    }
    .case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
    .case-card img { width: 100%; height: 180px; object-fit: cover; }
    .case-big { grid-column: 1 / 2; grid-row: 1 / 3; }
    .case-big img { height: 100%; min-height: 320px; max-height: 460px; }
    .case-meta { padding: 16px 18px 18px; }
    .case-meta h3 { font-size: 18px; margin-bottom: 6px; }
    .case-meta p { color: var(--muted); font-size: 14px; }
    .kpi { margin-top: 8px; color: var(--c-primary); font-size: 13px; font-variant-numeric: tabular-nums; }
    .stories { background: #fff; }
    .story-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 24px; }
    .story-main {
      display: grid; grid-template-columns: 1.1fr .9fr; background: var(--bg); border: 1px solid var(--line);
      border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
    }
    .story-main img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; }
    .quote { padding: 28px 26px; }
    .quote blockquote { font-size: 18px; line-height: 1.7; color: var(--text); }
    .quote cite { display: block; margin-top: 16px; color: var(--muted); font-style: normal; font-size: 14px; }
    .story-side { display: grid; gap: 16px; }
    .story-mini {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
    }
    .story-mini h3 { font-size: 18px; margin-bottom: 8px; }
    .story-mini p { color: var(--muted); font-size: 14px; }
    .stats { background: #fff; padding-top: 24px; }
    .stats-box {
      border-top: 2px solid var(--c-primary); background: linear-gradient(180deg, #F3F8FC, #fff);
      border: 1px solid var(--line); border-top-width: 2px; border-radius: var(--radius);
      display: grid; grid-template-columns: repeat(5, 1fr);
    }
    .stat-item { padding: 28px 18px; text-align: center; position: relative; }
    .stat-item:not(:last-child)::after {
      content: ""; position: absolute; right: 0; top: 24px; bottom: 24px; width: 1px; background: var(--line);
    }
    .stat-item strong {
      display: block; font-size: 32px; color: var(--text); font-variant-numeric: tabular-nums;
    }
    .stat-item span { color: var(--muted); font-size: 14px; }
    .reviews { background: var(--bg); }
    .review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .review {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px;
    }
    .stars { color: var(--c-primary); letter-spacing: 2px; font-size: 13px; margin-bottom: 8px; }
    .review p { color: var(--text); font-size: 15px; min-height: 6.2em; }
    .review .who { margin-top: 14px; color: var(--muted); font-size: 13px; }
    .news { background: #fff; }
    .news-layout { display: grid; grid-template-columns: 1.15fr 1fr; gap: 20px; }
    .news-feature {
      border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff;
    }
    .news-feature img { width: 100%; height: 280px; object-fit: cover; }
    .news-feature .pad, .news-item { padding: 18px 20px 22px; }
    .news-list { display: grid; gap: 12px; }
    .news-item {
      display: grid; grid-template-columns: 140px 1fr; gap: 14px; align-items: center;
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 0;
    }
    .news-item img { width: 140px; height: 108px; object-fit: cover; border-radius: 10px 0 0 10px; }
    .news-item .txt { padding: 12px 14px 12px 0; }
    .date { font-size: 12px; color: var(--metal); font-variant-numeric: tabular-nums; }
    .news h3 { font-size: 18px; margin: 4px 0 6px; }
    .news p { color: var(--muted); font-size: 14px; }
    .partners { background: var(--bg-soft); }
    .partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .partner {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px;
    }
    .partner h3 { font-size: 16px; margin-bottom: 6px; }
    .partner p { color: var(--muted); font-size: 14px; }
    .faq { background: #fff; }
    .faq-list { display: grid; gap: 10px; max-width: 920px; }
    .faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; padding: 16px 48px 16px 18px; position: relative; color: var(--text);
      font-size: 16px; font-weight: 600; min-height: 56px;
    }
    .faq-item button::after {
      content: ""; position: absolute; right: 20px; top: 50%; width: 10px; height: 10px;
      border-right: 2px solid var(--c-primary); border-bottom: 2px solid var(--c-primary);
      transform: translateY(-70%) rotate(45deg); transition: transform .2s var(--ease);
    }
    .faq-item.is-open button::after { transform: translateY(-20%) rotate(225deg); }
    .faq-panel { display: none; padding: 0 18px 16px; color: var(--muted); }
    .faq-item.is-open .faq-panel { display: block; }
    .guarantee { background: #EAF3FA; padding: 36px 0; }
    .g-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .g-item {
      display: grid; grid-template-columns: 36px 1fr; gap: 10px; align-items: start; padding: 8px;
    }
    .g-ico {
      width: 36px; height: 36px; border: 1px solid var(--c-accent); border-radius: 8px; position: relative;
    }
    .g-ico::before, .g-ico::after {
      content: ""; position: absolute; background: var(--c-accent);
    }
    .g-ico::before { width: 14px; height: 1px; left: 10px; top: 17px; }
    .g-ico::after { width: 1px; height: 14px; left: 17px; top: 10px; }
    .g-item h3 { font-size: 16px; }
    .g-item p { font-size: 14px; color: var(--muted); }
    .contact { background: #fff; }
    .contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
    .contact-aside {
      background: var(--dark); color: #E7EEF4; border-radius: var(--radius); padding: 28px 26px;
      background-image: linear-gradient(180deg, rgba(16,37,54,.92), rgba(16,37,54,.88)), url("/assets/images/12a1824c849eeee8.jpg");
      background-size: cover; background-position: center;
    }
    .contact-aside h2 { color: #fff; font-size: 28px; }
    .contact-aside p { margin-top: 12px; color: #D5E0E8; }
    .contact-aside dl { margin-top: 24px; display: grid; gap: 10px; }
    .contact-aside dt { font-size: 12px; color: var(--c-accent); }
    .contact-aside dd { margin: 0; color: #fff; }
    .form {
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px;
    }
    .form-row { margin-bottom: 14px; }
    .form label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--text); }
    .req { color: var(--danger); margin-left: 4px; }
    .form input, .form select, .form textarea {
      width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; min-height: 44px;
      background: #fff; color: var(--text);
    }
    .form textarea { min-height: 110px; resize: vertical; }
    .form input:focus, .form select:focus, .form textarea:focus {
      border-color: var(--c-accent); outline: 2px solid rgba(19,155,179,.25); outline-offset: 0;
    }
    .form .is-error { border-color: var(--danger); }
    .form-msg {
      display: none; margin-top: 12px; padding: 10px 12px; border-radius: 8px; background: #E8F6EE; color: var(--ok);
    }
    .form-msg.is-show { display: block; }
    .site-footer { background: #0F2130; color: #C9D6E0; padding: 48px 0 0; }
    .foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap: 28px; padding-bottom: 28px; }
    .foot-brand .logo { color: #fff; margin-bottom: 12px; }
    .foot-grid h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .foot-grid a { color: #C9D6E0; display: block; padding: 4px 0; font-size: 14px; }
    .foot-grid a:hover { color: #fff; }
    .copy {
      border-top: 1px solid rgba(215,226,236,.15); padding: 16px 0 22px; font-size: 13px; color: #8FA3B3;
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
    }
    @media (max-width: 1280px) {
      .hero h1, .slide-title { font-size: 40px; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 1024px) {
      :root { --pad-y: 80px; }
      .nav-desktop, .nav-cta { display: none; }
      .burger { display: grid; }
      .intro-grid, .dark-inner, .story-grid, .news-layout, .contact-grid, .foot-grid {
        grid-template-columns: 1fr;
      }
      .bento { grid-template-columns: 1fr 1fr; }
      .bento-wide { grid-column: 1 / -1; grid-row: auto; }
      .card-grid-3, .product-grid, .partner-grid { grid-template-columns: 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; gap: 18px; }
      .timeline::before { display: none; }
      .metrics-row, .stats-box { grid-template-columns: 1fr 1fr; }
      .metric { border-right: 0; border-bottom: 1px solid var(--line); }
      .stat-item:not(:last-child)::after { display: none; }
      .masonry { grid-template-columns: 1fr 1fr; }
      .case-big { grid-column: 1 / -1; grid-row: auto; }
      .story-main { grid-template-columns: 1fr; }
      .g-grid { grid-template-columns: 1fr 1fr; }
      .hero, .hero-grid { min-height: 560px; }
      .hero-ctrl { bottom: 64px; }
    }
    @media (max-width: 768px) {
      :root { --pad-y: 64px; }
      .container { width: min(var(--container), calc(100% - 32px)); }
      .top-left, .top-right { gap: 10px; }
      .hero { clip-path: none; min-height: 520px; }
      .hero-grid { min-height: 520px; padding: 72px 0 84px; }
      .hero h1, .slide-title { font-size: 30px; }
      .section-head h2, .dark-inner h2, .contact-aside h2 { font-size: 24px; }
      .bento, .card-grid-3, .product-grid, .partner-grid, .review-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .news-item { grid-template-columns: 110px 1fr; }
      .intro-photo img, .story-main img { height: 240px; min-height: 240px; }
      .form .btn { width: 100%; }
      .copy { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .topbar { font-size: 12px; }
      .top-right .hide-sm { display: none; }
      .hero h1, .slide-title { font-size: 28px; }
      .metrics-row, .stats-box, .masonry, .g-grid { grid-template-columns: 1fr 1fr; }
      .hero-actions .btn { flex: 1 1 100%; }
      .series-bar { width: 100%; }
      .news-item { grid-template-columns: 1fr; }
      .news-item img { width: 100%; height: 160px; border-radius: 10px 10px 0 0; }
      .news-item .txt { padding: 12px 14px 14px; }
    }
    @media (max-width: 375px) {
      .container { width: calc(100% - 24px); }
      .metric, .stat-item { padding: 18px 12px; }
      .metric strong, .stat-item strong { font-size: 26px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }