:root {
  --red: #d0122b;
  --red-dark: #d0122b;
  --red-deep: #d0122b;
  --red-soft: #fff1f3;
  --ink: #1a1a1a;
  --muted: #5c5656;
  --line: #efe4e4;
  --paper: #fff;
  --white: #fff;
  --shadow: 0 18px 50px rgba(80, 10, 20, 0.08);
  --max: 1160px;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: var(--red); text-decoration: none; }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.skip {
  position: absolute; left: 12px; top: -40px; background: var(--ink); color: #fff;
  padding: 8px 12px; z-index: 80;
}
.skip:focus { top: 12px; }

.topbar { background: var(--red); color: #fff; font-size: 13px; letter-spacing: 0.04em; }
.topbar-inner { display: flex; justify-content: center; gap: 16px; padding: 8px 0; }
.topbar a { color: #fff; font-weight: 700; }

.nav {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px); border-bottom: 1px solid transparent;
}
.nav.is-stuck { border-bottom-color: var(--line); box-shadow: 0 8px 24px rgba(0,0,0,0.04); }
.nav-inner { display: flex; align-items: center; gap: 28px; min-height: 78px; }
.brand { display: flex; align-items: center; margin-right: auto; }
.brand img { height: 62px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.nav-links a { position: relative; padding: 6px 0; color: var(--red); }
.nav-links a.is-active, .nav-links a:hover { color: var(--red); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--red);
  transform: scaleX(0); transform-origin: left; transition: transform 0.28s ease;
}
.nav-links a.is-active::after, .nav-links a:hover::after { transform: scaleX(1); }
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 5px 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 20px; border-radius: 999px; border: 1px solid transparent;
  background: var(--red); color: #fff; font-weight: 700; cursor: pointer;
  transition: transform 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}
.btn:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 12px 24px rgba(208, 18, 43, 0.28); }
.btn-light { background: #fff; color: var(--red); }
.btn-light:hover { background: var(--red-soft); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.7); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn-line { background: #fff; color: var(--red); border-color: var(--red); }
.btn-line:hover { background: var(--red-soft); }

.hero { background: var(--red); color: #fff; overflow: hidden; position: relative; }
.hero::before {
  content: ""; position: absolute; right: -80px; top: -120px; width: 420px; height: 420px;
  border: 70px solid rgba(255,255,255,0.08); border-radius: 50%;
  animation: drift 26s linear infinite;
}
.hero-grid {
  width: min(var(--max), calc(100% - 40px)); margin: 0 auto;
  display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 36px; align-items: center;
  min-height: 620px; position: relative; z-index: 1;
}
.kicker { margin: 0 0 14px; letter-spacing: 0.18em; font-size: 13px; opacity: 0.92; }
.hero h1 {
  margin: 0; font-family: var(--serif); font-weight: 700; font-size: clamp(46px, 6vw, 76px);
  line-height: 1.12; letter-spacing: 0.04em;
}
.hero .en { margin: 14px 0 0; font-size: 15px; letter-spacing: 0.04em; opacity: 0.86; }
.hero .lead { max-width: 540px; font-size: 17px; line-height: 1.8; color: rgba(255,255,255,0.92); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media { position: relative; min-height: 460px; }
.hero-media img {
  width: 100%; height: 540px; object-fit: contain; object-position: center;
  animation: floaty 5.5s ease-in-out infinite;
}
.hero-card {
  position: absolute; left: 0; bottom: 36px; width: 230px; background: #fff; color: var(--ink);
  padding: 16px 16px 14px; box-shadow: var(--shadow);
}
.hero-card strong { display: block; color: var(--red); font-size: 20px; line-height: 1.3; }
.hero-card span { color: var(--muted); font-size: 13px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--red); color: #fff; }
.stat { padding: 28px 18px; text-align: center; border-right: 1px solid rgba(255,255,255,0.08); transition: background 0.3s ease; }
.stat:hover { background: rgba(255,255,255,0.06); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-family: var(--serif); font-size: 34px; color: #fff; letter-spacing: 0.03em; }
.stat span { color: rgba(255,255,255,0.72); font-size: 14px; }

.section { padding: 88px 0; }
.section-paper { background: #fff; }
.sec-head { margin-bottom: 32px; }
.sec-head .en {
  margin: 0; color: var(--red); letter-spacing: 0.16em; font-size: 12px; font-weight: 700;
}
.sec-head h2 { margin: 6px 0 0; font-family: var(--serif); font-size: clamp(30px, 4vw, 42px); line-height: 1.25; }
.sec-head p { margin: 10px 0 0; color: var(--muted); max-width: 680px; }

.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.split img { width: 100%; height: 420px; object-fit: cover; transition: transform 0.6s ease; }
.split img:hover { transform: scale(1.04); }
.prose p { margin: 0 0 14px; }
.ticks { display: grid; gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; }
.ticks li { padding-left: 18px; position: relative; }
.ticks li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--red); position: absolute; left: 0; top: 0.65em; }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step { background: #fff; border: 1px solid var(--line); padding: 22px 16px 20px; min-height: 240px; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.step:hover { transform: translateY(-6px); box-shadow: inset 0 3px 0 var(--red), var(--shadow); }
.step i { transition: transform 0.3s ease; }
.step:hover i { transform: scale(1.08); }
.step i {
  display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%;
  background: var(--red); color: #fff; font-style: normal; font-weight: 800; margin-bottom: 14px;
}
.step:nth-child(even) i { background: var(--red); }
.step h3 { margin: 0 0 8px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

.fields { display: grid; grid-template-columns: 280px 1fr; gap: 28px; align-items: center; }
.field-core {
  background: var(--red); color: #fff; min-height: 280px; display: grid; place-items: center; text-align: center; padding: 24px;
}
.field-core strong { font-family: var(--serif); font-size: 36px; display: block; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field {
  background: #fff; border: 1px solid var(--line); padding: 16px 16px 14px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.field:hover { transform: translateY(-4px); box-shadow: inset 0 3px 0 var(--red), var(--shadow); }
.field b { display: block; color: var(--red); }
.field span { color: var(--muted); font-size: 13px; }
.field p { margin: 6px 0 0; font-size: 14px; }

.series { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.series article { display: grid; grid-template-columns: 168px 1fr; background: #fff; border: 1px solid var(--line); overflow: hidden; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.series article:hover { transform: translateY(-4px); box-shadow: inset 0 3px 0 var(--red), var(--shadow); }
.series img { width: 100%; height: 100%; object-fit: cover; min-height: 180px; }
.series div { padding: 18px 18px 16px; }
.series h3 { margin: 0 0 6px; font-size: 20px; }
.series .more { color: var(--red); font-weight: 700; }
.series p { margin: 0; color: var(--muted); font-size: 14px; }
.tag { display: inline-block; color: var(--red); font-size: 12px; letter-spacing: 0.08em; font-weight: 700; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: #fff; border: 1px solid var(--line); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: inset 0 3px 0 var(--red), var(--shadow); }
.card img { width: 100%; height: 210px; object-fit: cover; background: var(--paper); }
.card div { padding: 16px 16px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { margin: 0; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; flex: 1; }
.card .more, .series .more {
  color: var(--red); font-weight: 700; font-size: 14px;
  background: transparent; border: 0; padding: 0; cursor: pointer; text-align: left;
}

.creds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cred { background: #fff; border-left: 4px solid var(--red); padding: 16px 16px 14px; box-shadow: 0 1px 0 var(--line); }
.cred b { display: block; }
.cred span { color: var(--muted); font-size: 13px; }

.gallery, .places { display: grid; gap: 12px; }
.gallery { grid-template-columns: repeat(3, 1fr); }
.places { grid-template-columns: 1.25fr 0.75fr; }
.gallery figure, .places figure { margin: 0; position: relative; overflow: hidden; background: #111; }
.gallery img, .places img, .card img, .series img, .labs img {
  width: 100%; object-fit: cover; transition: transform 0.55s ease;
}
.gallery img, .places img { height: 240px; }
.places img { height: 420px; }
.gallery figure:hover img, .places figure:hover img, .card:hover img, .series article:hover img, .labs img:hover {
  transform: scale(1.08);
}
.gallery figcaption, .places figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; margin: 0; z-index: 1;
  padding: 28px 12px 10px; color: #fff; font-size: 14px;
  background: linear-gradient(transparent, rgba(0,0,0,0.62));
  transition: transform 0.35s ease;
}
.gallery figure:hover figcaption, .places figure:hover figcaption { transform: translateY(-4px); }
.life-hero { grid-column: 1 / -1; }
.life-hero img { height: 460px; }

.partners { display: flex; flex-wrap: wrap; gap: 10px; }
.partners span {
  background: #fff; border: 1px solid var(--line); padding: 10px 14px; font-weight: 700; font-size: 14px;
  transition: transform 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}
.partners span:hover { color: var(--red); border-color: var(--red); transform: translateY(-3px); }

.faq { display: grid; gap: 10px; }
.faq details { background: #fff; border: 1px solid var(--line); padding: 12px 16px; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 8px 0 0; color: var(--muted); }

.culture { background: var(--red); color: #fff; }
.culture .sec-head .en, .culture .sec-head h2 { color: #fff; }
.culture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.culture article { border: 1px solid rgba(255,255,255,0.28); padding: 22px; }
.culture h3 { margin: 0 0 8px; font-size: 20px; }
.culture p { margin: 0; color: rgba(255,255,255,0.9); }

.cta { background: var(--red); color: #fff; }
.cta .btn { background: #fff; color: var(--red); }
.cta-inner { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.cta h2 { margin: 0 0 8px; font-family: var(--serif); font-size: 34px; }
.cta p { margin: 0; color: rgba(255,255,255,0.75); }
.page-hero { background: var(--red); color: #fff; padding: 54px 0 46px; }
.page-hero h1 { margin: 8px 0 0; font-family: var(--serif); font-size: clamp(34px, 5vw, 52px); }
.crumbs { margin: 0; font-size: 13px; letter-spacing: 0.08em; opacity: 0.85; }
.crumbs a { color: #fff; }

.labs { display: grid; grid-template-columns: 1.3fr 1fr; grid-template-rows: 220px 220px; gap: 12px; }
.labs img { width: 100%; height: 100%; object-fit: cover; }
.labs img:first-child { grid-row: 1 / span 2; }
.hero-card a { color: var(--red); font-weight: 800; font-size: 22px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.filters button, .search {
  border: 1px solid var(--line); background: #fff; min-height: 40px; padding: 0 14px; cursor: pointer; border-radius: 999px;
}
.filters button.is-on, .filters button:hover { background: var(--red); color: #fff; border-color: var(--red); }
.toolbar { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.search { border-radius: 999px; min-width: min(320px, 100%); }
.result-count { color: var(--muted); font-size: 14px; }
.catalog { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.empty { padding: 40px 0; color: var(--muted); }

dialog {
  width: min(860px, calc(100% - 24px)); border: 0; padding: 0; border-radius: 0;
  box-shadow: 0 30px 80px rgba(0,0,0,0.25);
}
dialog::backdrop { background: rgba(20, 6, 8, 0.55); }
.dlg { display: grid; grid-template-columns: 280px 1fr; }
.dlg img { width: 100%; height: 100%; object-fit: cover; min-height: 240px; background: var(--paper); }
.dlg-body { padding: 22px 22px 26px; max-height: min(78vh, 760px); overflow: auto; }
.dlg-body h3 { margin: 6px 0; font-family: var(--serif); font-size: 30px; }
.dlg-close {
  float: right; border: 0; background: var(--paper); width: 36px; height: 36px; cursor: pointer; font-size: 20px;
}
.spec { margin: 12px 0; padding: 0; }
.spec div { display: grid; grid-template-columns: 88px 1fr; gap: 8px; padding: 7px 0; border-bottom: 1px solid var(--line); }
.spec dt { color: var(--muted); }
.spec dd { margin: 0; }
.models { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; }
.models th { background: var(--red); color: #fff; text-align: left; padding: 8px 10px; font-weight: 600; }
.models td { padding: 8px 10px; border-bottom: 1px solid var(--line); }
.models tr:nth-child(even) td { background: #fff7f8; }

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 28px; }
.info-list { display: grid; gap: 12px; }
.info-list article { background: var(--paper); padding: 16px 18px; }
.info-list span { display: block; color: var(--muted); font-size: 13px; }
.info-list a, .info-list strong { font-size: 20px; color: var(--red); }
.qrs { display: flex; gap: 18px; margin-top: 18px; }
.qrs figure { margin: 0; text-align: center; font-size: 13px; color: var(--muted); }
.qrs img { width: 120px; height: 120px; object-fit: cover; background: #fff; border: 1px solid var(--line); margin-bottom: 6px; }
form { display: grid; gap: 12px; }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 700; }
input, select, textarea {
  width: 100%; border: 1px solid #e5d8d8; background: #fff; padding: 12px 12px; border-radius: 0;
}
textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-error { color: var(--red); margin: 0; font-size: 14px; }
.done { background: var(--red-soft); padding: 22px; border-left: 4px solid var(--red); }
.done a { color: var(--red); font-weight: 800; }

.footer { background: var(--red); color: rgba(255,255,255,0.92); padding: 48px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.footer h2, .footer h3 { color: #fff; margin: 0 0 10px; font-family: var(--serif); }
.footer a { color: #fff; }
.footer ul { margin: 0; padding: 0; list-style: none; }
.footer li { margin: 6px 0; }
.legal { margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 13px; }

@media (max-width: 980px) {
  .hero-grid, .split, .fields, .contact-grid, .dlg, .labs, .gallery, .places { grid-template-columns: 1fr; }
  .stats, .steps, .cards, .creds, .catalog, .series { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-media { min-height: 0; }
  .hero-media img { height: 320px; }
  .hero-card { position: static; width: auto; margin-top: 12px; }
  .labs, .gallery { grid-template-rows: none; }
  .labs img, .labs img:first-child, .gallery img, .places img, .life-hero img { height: 220px; grid-row: auto; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 760px) {
  .topbar-inner { display: none; }
  .nav-toggle { display: block; }
  .nav-inner { min-height: 68px; position: relative; }
  .nav-links {
    display: none; position: absolute; left: -20px; right: -20px; top: 100%;
    background: #fff; flex-direction: column; align-items: flex-start; padding: 8px 20px 16px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav-links.is-open { display: flex; }
  .stats, .steps, .cards, .creds, .catalog, .series, .field-grid, .culture-grid, .footer-grid, .form-row {
    grid-template-columns: 1fr;
  }
  .series article { grid-template-columns: 1fr; }
  .series img { height: 180px; }
  .section { padding: 64px 0; }
  .brand img { height: 50px; }
  .nav-toggle span { background: var(--red); }
  .hero, .page-hero, .stats, .culture, .cta, .footer { background: var(--red); color: #fff; }
  .nav-links a, .footer a, .page-hero a, .crumbs a { color: var(--red); }
  .footer a, .page-hero a, .crumbs a, .hero, .page-hero, .stats, .culture, .cta, .footer { color: #fff; }
  .nav-links { background: #fff; }
  .nav-links a { color: var(--red); }
}
.reveal { opacity: 0; transform: translateY(24px); }
.reveal.is-in { opacity: 1; transform: none; transition: opacity 0.7s ease, transform 0.7s ease; }
.card.reveal.is-in:hover, .series article.reveal.is-in:hover, .field.reveal.is-in:hover { transform: translateY(-6px); }
.step.reveal.is-in:hover { transform: translateY(-6px); }
.partners span.reveal.is-in:hover { transform: translateY(-3px); }

@keyframes drift { to { transform: rotate(360deg); } }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.qa-bar { margin: 0 0 14px; }
.qa-label { display: block; font-size: 13px; color: var(--muted); }
.qa-label input {
  display: block; width: 100%; margin-top: 6px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 14px 16px;
}
.qa-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.qa-chips button {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 6px 12px; cursor: pointer;
}
.qa-chips button:hover { background: var(--red); color: #fff; border-color: var(--red); }
.qa-list { display: grid; gap: 12px; margin-bottom: 18px; }
.qa-item { background: var(--red-soft); padding: 18px 20px; }
.qa-item h2, .qa-item h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.4; }
.qa-item p { margin: 0; }
.qa-item.is-hidden { display: none; }
.qa-miss { margin: 0 0 16px; }

.section:not(.culture):not(.cta) {
  background-color: #fff;
  background-image:
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-size: 46px 3px, 3px 46px, 46px 3px, 3px 46px;
  background-position: 18px 18px, 18px 18px, right 18px bottom 18px, right 18px bottom 18px;
}
.section-paper:not(.culture):not(.cta) { background-color: #fff7f8; }
.stats + .section,
.page-hero + .section {
  background-image:
    linear-gradient(180deg, rgba(208, 18, 43, 0.2), rgba(208, 18, 43, 0) 96px),
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red)),
    linear-gradient(var(--red), var(--red));
  background-size: 100% 100%, 46px 3px, 3px 46px, 46px 3px, 3px 46px;
  background-position: center, 18px 18px, 18px 18px, right 18px bottom 18px, right 18px bottom 18px;
}
.section:not(.culture):not(.cta) .sec-head h2 {
  padding-bottom: 10px;
  background-image: linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-size: 56px 3px;
  background-position: left bottom;
}
.step, .card, .series article, .field, .faq details, .info-list article, .qa-item {
  box-shadow: inset 0 3px 0 var(--red);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}