:root {
  --bg: #f4f2ee;
  --bg-soft: #faf9f6;
  --paper: #ffffff;
  --ink: #14202b;
  --muted: #5c6a74;
  --line: #e4e0d8;
  --teal: #0d3c48;
  --teal-2: #145866;
  --accent: #1b6d78;
  --shadow: 0 18px 50px rgba(20, 32, 43, 0.06);
  --radius: 18px;
  --header: 76px;
  --max: 1120px;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.75;
  font-weight: 400;
}
img, video { max-width: 100%; display: block; }
a { color: var(--teal-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
button, input, select, textarea { font-family: inherit; }
.skip {
  position: absolute; left: 12px; top: -40px; background: var(--teal); color: #fff;
  padding: 8px 12px; z-index: 100; border-radius: 8px;
}
.skip:focus { top: 12px; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.wrap-wide { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }

header.site {
  position: sticky; top: 0; z-index: 40;
  background: rgba(244, 242, 238, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  height: var(--header);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand img { height: 34px; width: auto; }
.brand span { font-weight: 600; letter-spacing: 0.04em; font-size: 14px; color: var(--muted); }
.menu { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.menu > li { position: relative; }
.menu a, .menu button.navbtn {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--ink); text-decoration: none; background: none; border: 0;
  padding: 10px 12px; font-size: 15px; cursor: pointer; border-radius: 999px;
}
.menu a:hover, .menu button.navbtn:hover, .menu a[aria-current="page"] {
  background: rgba(13, 60, 72, 0.06); color: var(--teal);
}
.caret { width: 8px; height: 8px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); }
.dropdown {
  position: absolute; top: calc(100% - 4px); left: 0; min-width: 240px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: .18s ease;
}
.menu > li:hover > .dropdown,
.menu > li:focus-within > .dropdown,
.menu > li.open > .dropdown {
  opacity: 1; visibility: visible; transform: none;
}
.dropdown a { display: block; border-radius: 10px; padding: 12px 14px; }
.dropdown a small { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.4; }
.nav-cta {
  background: var(--teal) !important; color: #fff !important; border-radius: 999px !important;
  padding: 10px 16px !important;
}
.nav-cta:hover { background: var(--teal-2) !important; color: #fff !important; }
.burger {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--paper); cursor: pointer;
}
.burger span { display: block; height: 1.5px; margin: 5px 10px; background: var(--ink); }

.hero { padding: 28px 0 10px; }
.hero-frame {
  position: relative; border-radius: 28px; overflow: hidden; background: #0e1c22;
  min-height: 560px;
}
.hero .slide {
  min-height: 560px; position: relative;
  background: #10242b center/cover no-repeat;
}
.hero .slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(10, 22, 28, 0.78) 0%, rgba(10, 22, 28, 0.28) 58%, rgba(10, 22, 28, 0.12) 100%);
}
.hero-copy {
  position: relative; z-index: 1; color: #f7f4ee;
  width: min(640px, 90%); padding: 88px 64px;
}
.eyebrow {
  font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin: 0 0 12px;
}
.hero .eyebrow { color: #9fd4d4; }
h1, h2, h3 { font-weight: 500; letter-spacing: -0.03em; line-height: 1.15; margin: 0; }
.hero h1 { font-size: clamp(40px, 5.4vw, 68px); color: #fff; }
.lead { font-size: 18px; color: var(--muted); margin: 16px 0 0; max-width: 46rem; }
.hero .lead { color: rgba(247, 244, 238, 0.86); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 12px 18px; text-decoration: none; border: 1px solid transparent;
  font-size: 15px; cursor: pointer;
}
.btn-solid { background: #fff; color: var(--teal); }
.btn-solid:hover { background: #e7f3f3; color: var(--teal); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.45); }
.btn-ghost:hover { background: rgba(255,255,255,.08); color: #fff; }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-2); color: #fff; }
.btn-line { background: transparent; color: var(--teal); border-color: #c9d5d4; }
.btn-line:hover { background: #fff; }

.carousel { position: relative; }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel .slide { min-width: 100%; }
.car-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35);
  background: rgba(13, 28, 34, .35); color: #fff; cursor: pointer; z-index: 2;
}
.car-btn:hover { background: rgba(13, 28, 34, .6); }
.car-btn.prev { left: 16px; } .car-btn.next { right: 16px; }
.dots { position: absolute; left: 64px; bottom: 28px; display: flex; gap: 8px; z-index: 2; }
.dots button {
  width: 28px; height: 3px; border: 0; background: rgba(255,255,255,.4); cursor: pointer; padding: 0;
}
.dots button[aria-current="true"] { background: #fff; }

.section { padding: 88px 0; }
.section h2 { font-size: clamp(32px, 4vw, 48px); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 36px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); color: inherit; text-decoration: none;
  display: flex; flex-direction: column;
}
.card:hover { color: inherit; transform: translateY(-2px); transition: .2s ease; }
.card img.cover { width: 100%; height: 260px; object-fit: cover; background: #e9e6df; }
.card .pad { padding: 26px 26px 30px; }
.card h3 { font-size: 28px; }
.kicker { color: var(--accent); font-weight: 600; margin: 8px 0 0; }

.quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.quote {
  background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 24px;
}
.quote p { margin: 0; font-size: 15.5px; }
.who { display: flex; gap: 12px; align-items: center; margin-top: 16px; }
.who img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; background: #eee; }
.who strong { display: block; font-weight: 600; }
.who span { color: var(--muted); font-size: 13.5px; }

.news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.news a.card img.cover { height: 190px; object-fit: cover; }
.meta { color: var(--muted); font-size: 13.5px; margin-top: 8px; }

.marquee { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.marquee-track { display: flex; gap: 56px; align-items: center; width: max-content; animation: slide 46s linear infinite; padding: 22px 0; }
.marquee img { height: 48px; width: auto; max-width: 160px; object-fit: contain; filter: grayscale(1); opacity: .8; }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.page-hero { padding: 42px 0 10px; }
.page-hero .banner {
  border-radius: 28px; overflow: hidden; min-height: 280px;
  background: #10242b center/cover no-repeat; position: relative;
}
.page-hero .banner .inner { position: relative; z-index: 1; padding: 72px 56px; color: #fff; max-width: 760px; }
.page-hero .banner::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,18,24,.72), rgba(8,18,24,.18));
}
/* 背景图主体在右侧（经销商页），文字区保持纯深色，避免与标题重叠 */
.page-hero .banner .lead { color: rgba(247, 244, 238, 0.88); }
.page-hero .banner.banner-right { background-position: right center; }
.page-hero .banner.banner-right .inner { max-width: 46%; }
.crumbs { color: rgba(255,255,255,.75); font-size: 13.5px; margin-bottom: 10px; }
.crumbs a { color: #fff; text-decoration: none; }

.prose { max-width: 760px; }
.prose p { margin: 0 0 14px; }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.split img, .frame {
  border-radius: 20px; width: 100%; height: auto; background: #fff; border: 1px solid var(--line);
}
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 22px 0 8px; }
.tabs button {
  border: 1px solid var(--line); background: transparent; border-radius: 999px;
  padding: 8px 14px; cursor: pointer; color: var(--ink);
}
.tabs button[aria-selected="true"] { background: var(--teal); color: #fff; border-color: var(--teal); }
.tabpanel[hidden] { display: none; }
.checklist { margin: 8px 0 0; padding: 0; list-style: none; }
.checklist li { padding: 10px 0; border-bottom: 1px solid var(--line); }

/* 折叠卡片：参照英国官网（悬停阴影 0.3s，展开/收起 0.5s，一次只展开一项） */
.acc { margin-top: 8px; }
.acc-item {
  border: 1px solid var(--line); border-radius: 12px; background: var(--paper); margin-top: 14px;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.acc-item:hover, .acc-item:focus-within { box-shadow: 1px 5px 20px 0 rgba(37, 82, 91, 0.2); border-color: #d6dfe0; }
.acc-item.open { box-shadow: 1px 5px 20px 0 rgba(37, 82, 91, 0.12); }
.acc-item button.head {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 18px 22px; display: flex; justify-content: space-between; gap: 16px; align-items: center;
  font-size: 20px; letter-spacing: -0.02em; color: var(--ink);
}
.acc-item button.head span.plus {
  color: var(--accent); font-weight: 400; font-size: 26px; line-height: 1;
  display: inline-block; width: 1em; text-align: center; flex: none; transition: transform .5s ease-in-out;
}
.acc-item.open button.head span.plus { transform: rotate(180deg); }
.acc-panel { padding: 0 22px; overflow: hidden; transition: height .5s ease-in-out, opacity .5s ease-in-out; }
.acc-panel::after { content: ""; display: block; height: 26px; }
.acc-panel[hidden] { display: none; }
@media (prefers-reduced-motion: reduce) {
  .acc-item, .acc-item button.head span.plus, .acc-panel { transition: none; }
}
.media-row { display: grid; grid-template-columns: minmax(240px, 380px) 1fr; gap: 28px; align-items: start; }
.gallery { border-radius: 16px; overflow: hidden; background: #fff; border: 1px solid var(--line); position: relative; }
.gallery img, .gallery video { width: 100%; height: 280px; object-fit: contain; background: #f7f5f1; }
.gallery .car-btn { background: var(--paper); color: var(--ink); border-color: var(--line); }
.play {
  margin-top: 12px; display: inline-flex; align-items: center; gap: 8px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 6px 10px; font-size: 13.5px; color: var(--ink); }

table.specs, table.dist {
  width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--line); margin-top: 18px;
}
table.specs th, table.specs td, table.dist th, table.dist td {
  text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: middle;
}
table.specs th { width: 34%; color: var(--muted); font-weight: 500; background: #fbfaf7; }
table.dist img { height: 54px; width: auto; max-width: 180px; object-fit: contain; }
caption { text-align: left; font-size: 13px; color: var(--muted); padding-bottom: 8px; }

.note {
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 12px; padding: 16px 18px; color: var(--muted);
}
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; }
form.card { padding: 28px; }
label { display: block; font-size: 13.5px; color: var(--muted); margin: 12px 0 6px; }
input, select, textarea {
  width: 100%; border: 1px solid var(--line); background: var(--bg-soft); border-radius: 12px;
  padding: 12px 14px; color: var(--ink); font-size: 15px;
}
textarea { min-height: 120px; resize: vertical; }
.form-ok { display: none; margin-top: 14px; }
.form-err { display: none; margin-top: 14px; padding: 12px 16px; border-radius: 12px; background: #fdecea; color: #a1281b; font-size: 14.5px; }
.hp { position: absolute !important; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
form.inquiry { position: relative; }
.map {
  margin-top: 18px; border: 0; width: 100%; height: 280px; border-radius: 16px; background: #e7e4de;
}

footer.site { background: #102028; color: #d5ddd8; padding: 64px 0 24px; margin-top: 20px; }
footer.site a { color: #e7f2f0; }
.foot-grid { display: grid; grid-template-columns: 1.3fr .8fr .9fr .9fr; gap: 28px; }
footer h2, footer h3 { color: #fff; font-size: 15px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; }
footer p, footer li { color: #c5d0cc; font-size: 14.5px; }
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin: 8px 0; }
.cn-legal { margin-bottom: 6px; }
.cn-legal strong { color: #fff; font-weight: 600; }
.en-name { font-size: 12.5px; letter-spacing: .03em; line-height: 1.5; }
.card .en-name { color: var(--muted); margin-top: -4px; }
.foot-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.12); margin-top: 28px; padding-top: 16px; font-size: 13px; color: #9eada8; }
.foot-left { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 18px; }
.foot-bottom .icp { color: #8d9c97; }
.foot-bottom .icp a { color: #b6c3be; text-decoration: none; }
.foot-bottom .icp a:hover, .foot-bottom .icp a:focus-visible { color: #fff; text-decoration: underline; }
@media (max-width: 640px) {
  .foot-bottom { flex-direction: column; }
  .foot-left { flex-direction: column; gap: 6px; }
}
/* 页脚图片：与英国官网一致，白色透明 PNG 直接放在深色底上 */
.foot-logo { width: 145px; height: auto; margin-bottom: 4px; }
.awards { width: 100%; max-width: 235px; height: auto; margin-top: 16px; padding: 3px; }

.lb {
  position: fixed; inset: 0; background: rgba(10, 16, 20, .86); z-index: 80;
  display: none; align-items: center; justify-content: center; padding: 24px;
}
.lb.open { display: flex; }
.lb img, .lb video { max-width: min(1100px, 92vw); max-height: 86vh; object-fit: contain; background: #000; }
.lb button.x {
  position: absolute; top: 16px; right: 16px; background: #fff; border: 0; border-radius: 999px;
  width: 40px; height: 40px; cursor: pointer;
}

@media (max-width: 980px) {
  .burger { display: inline-block; }
  .menu {
    display: none; position: absolute; top: var(--header); left: 0; right: 0;
    background: var(--bg-soft); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 10px 16px 18px;
  }
  header.site.open .menu { display: flex; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; display: none; box-shadow: none; border: 0; padding: 0 0 0 12px; }
  .menu > li.open > .dropdown { display: block; }
  .nav-cta { text-align: center; }
  .grid-2, .quotes, .news, .split, .media-row, .contact-grid, .foot-grid { grid-template-columns: 1fr; }
  .hero-copy, .page-hero .banner .inner { padding: 48px 24px; }
  .dots { left: 24px; }
  .hero-frame, .hero .slide { min-height: 460px; }
  /* 窄屏时文字会覆盖图案：改为纯深色底 */
  .page-hero .banner.banner-right { background-image: none !important; }
  .page-hero .banner.banner-right .inner { max-width: none; }
}

.banner.plain { background: #0d3c48; }
.banner.plain::after { display: none; }
.section-head { max-width: 720px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.soft-list { margin: 10px 0 0; padding-left: 1.1em; }
.soft-list li { margin: 6px 0; }
@media (max-width: 980px) {
  .two-col { grid-template-columns: 1fr; }
}