:root {
  --ink: #102c22;
  --deep: #06271d;
  --cream: #f4f1e9;
  --paper: #fbfaf6;
  --gold: #cda957;
  --gold-light: #e8cb82;
  --line: rgba(16, 44, 34, 0.17);
  --muted: #62716b;
  --shell: min(1460px, calc(100% - 10vw));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
button, input, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.section-shell { width: var(--shell); margin-inline: auto; }

.site-header { height: 82px; padding: 0 4.5vw; display: grid; grid-template-columns: 250px 1fr auto; align-items: center; gap: 32px; background: rgba(251, 250, 246, .96); border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
.brand { width: 205px; height: 80px; display: flex; align-items: center; overflow: hidden; }
.brand img { width: 205px; height: 205px; max-width: none; flex: 0 0 205px; object-fit: contain; object-position: center; }
.primary-nav { display: flex; justify-content: center; gap: clamp(24px, 3.2vw, 58px); font-size: 13px; letter-spacing: .07em; }
.primary-nav a, .header-quote { position: relative; }
.primary-nav a::after, .header-quote::after { content: ""; position: absolute; height: 1px; left: 0; right: 100%; bottom: -7px; background: var(--gold); transition: right .25s ease; }
.primary-nav a:hover::after, .header-quote:hover::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 28px; }
.language-switch { display: flex; align-items: center; gap: 7px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: 11px; color: var(--muted); }
.language-switch button { border: 0; background: transparent; color: inherit; padding: 0; cursor: pointer; }
.language-switch button.is-active { color: var(--ink); font-weight: 700; }
.header-quote { font-weight: 700; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; white-space: nowrap; }

.home-hero { min-height: calc(100vh - 82px); display: grid; grid-template-columns: 52% 48%; align-items: stretch; background: var(--cream); overflow: hidden; }
.hero-copy { padding: clamp(68px, 9vh, 120px) 3vw clamp(64px, 8vh, 100px) 6vw; display: flex; flex-direction: column; justify-content: center; position: relative; z-index: 2; }
.hero-kicker, .model-code { margin: 0 0 24px; font-size: 11px; letter-spacing: .24em; font-weight: 700; color: var(--gold); }
.hero-copy h1 { max-width: 760px; margin: 0; font-size: clamp(54px, 5.35vw, 92px); line-height: .96; letter-spacing: -.065em; font-weight: 500; }
.hero-copy h1 span { display: block; white-space: nowrap; }
.hero-copy > p:not(.hero-kicker) { max-width: 610px; margin: 34px 0 0; font-size: clamp(15px, 1.1vw, 19px); line-height: 1.75; color: var(--muted); }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 34px; }
.button { min-height: 58px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; border: 0; cursor: pointer; font-size: 12px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.button-gold { background: var(--gold); color: var(--deep); }
.button-dark { background: var(--deep); color: white; }
.button:hover span { transform: translate(3px, -3px); }
.button span { transition: transform .2s ease; }
.text-link { display: inline-flex; gap: 28px; padding-bottom: 8px; border-bottom: 1px solid var(--ink); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.hero-visual { min-width: 0; position: relative; display: flex; align-items: center; justify-content: center; background: linear-gradient(140deg, #dfe5df 0%, #cbd9d1 58%, #a9c1b4 100%); overflow: hidden; }
.hero-visual::before { content: ""; position: absolute; width: 130%; height: 42%; bottom: -10%; left: -15%; background: rgba(6,39,29,.16); border-radius: 50%; transform: rotate(-4deg); filter: blur(2px); }
.hero-halo { position: absolute; width: min(54vw, 740px); aspect-ratio: 1; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; }
.hero-vehicle { width: min(59vw, 900px); max-width: 105%; position: relative; z-index: 2; filter: drop-shadow(0 28px 25px rgba(5, 40, 29, .24)); }
.hero-model-mark { position: absolute; left: 5%; bottom: 5%; display: flex; align-items: baseline; gap: 16px; color: white; z-index: 3; }
.hero-model-mark span { font-size: 56px; font-weight: 500; }
.hero-model-mark b { font-size: 11px; letter-spacing: .2em; }

.catalog-section { padding-block: 128px; }
.section-heading { margin-bottom: 54px; }
.split-heading { display: grid; grid-template-columns: 1.25fr .75fr; gap: 10vw; align-items: end; }
.section-index, .section-eyebrow { margin: 0 0 20px; font-size: 11px; letter-spacing: .2em; color: var(--gold); font-weight: 700; }
.section-index.light, .section-eyebrow.light { color: var(--gold-light); }
.section-heading h2, .factory-copy h2, .solution-panel h2, .contact-section h2, .inquiry-intro h2, .model-hero h1, .model-viewer h2 { margin: 0; font-size: clamp(44px, 5.3vw, 82px); line-height: 1.04; letter-spacing: -.05em; font-weight: 500; }
.split-heading > p, .factory-copy > p:last-child, .solution-panel > p:not(.section-index):not(.section-eyebrow), .contact-section > div > p:last-child, .inquiry-intro > p:last-child { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.category-tabs { display: flex; flex-wrap: wrap; gap: 4px; padding: 6px; margin-bottom: 48px; width: fit-content; border: 1px solid var(--line); }
.category-tabs button { border: 0; background: transparent; padding: 13px 21px; color: var(--muted); cursor: pointer; font-size: 12px; letter-spacing: .05em; }
.category-tabs button.is-active { background: var(--deep); color: white; }
.series-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 28px; align-items: start; }
.series-card { grid-column: span 6; border-top: 1px solid var(--line); padding-top: 18px; }
.series-card:nth-child(5n + 1) { grid-column: span 7; }
.series-card:nth-child(5n + 2) { grid-column: span 5; }
.series-image { height: clamp(360px, 40vw, 610px); display: flex; align-items: center; justify-content: center; background: #e6ebe7; overflow: hidden; }
.series-card:nth-child(even) .series-image { background: #e9e5da; }
.series-image img { width: 92%; height: 92%; object-fit: contain; transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.series-image:hover img { transform: scale(1.035); }
.series-meta { padding: 14px 2px 12px; display: flex; justify-content: space-between; font-size: 10px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; border-bottom: 1px solid var(--line); }
.series-copy { padding: 22px 2px 48px; display: grid; grid-template-columns: 1fr auto; gap: 18px; }
.series-copy p { margin: 0 0 9px; color: var(--gold); font-size: 10px; font-weight: 700; letter-spacing: .17em; }
.series-copy h3 { margin: 0; font-size: clamp(25px, 2.5vw, 39px); line-height: 1.15; font-weight: 500; letter-spacing: -.03em; }
.series-copy div > span { display: block; max-width: 510px; margin-top: 13px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.series-copy > a { width: 54px; height: 54px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: 20px; transition: background .2s, color .2s; }
.series-copy > a:hover { background: var(--deep); color: white; }

.factory-section { padding-block: 125px; background: var(--deep); color: white; overflow: hidden; }
.factory-section .section-shell { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 38px 28px; align-items: stretch; }
.factory-copy { grid-column: 1 / -1; padding: 0; display: grid; grid-template-columns: minmax(0, .88fr) minmax(320px, .62fr); gap: 7vw; align-items: end; }
.factory-copy > p:last-child { max-width: 660px; justify-self: end; }
.factory-copy > p:last-child { margin-top: 28px; color: #b8c7c0; }
.factory-section figure { margin: 0; }
.factory-primary, .factory-secondary { width: 100%; min-width: 0; }
.factory-primary img, .factory-secondary img { width: 100%; height: clamp(360px, 31vw, 520px); display: block; object-fit: cover; }
.factory-section figcaption { margin-top: 11px; color: #aebfb7; font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }

.solutions-section { padding-block: 132px; display: grid; grid-template-columns: .85fr 1.15fr; gap: 5vw; align-items: center; }
.solution-panel > p:not(.section-index):not(.section-eyebrow) { margin-top: 28px; max-width: 610px; }
.solution-panel .button { margin-top: 36px; }
.solution-images { height: 590px; display: grid; grid-template-columns: 1.2fr .8fr; grid-template-rows: 1fr 1fr; gap: 16px; }
.solution-images img { width: 100%; height: 100%; object-fit: contain; background: #e4e9e5; }
.solution-images img:first-child { grid-row: 1 / 3; }
.solution-images img:nth-child(2) { background: #ede7da; }

.contact-section { padding-block: 118px; border-top: 1px solid var(--line); display: grid; grid-template-columns: .9fr 1.1fr; gap: 8vw; }
.contact-section > div > p:last-child { margin-top: 26px; max-width: 560px; }
.contact-list { border-top: 1px solid var(--line); }
.contact-list a { min-height: 118px; display: grid; grid-template-columns: .55fr 1fr auto; gap: 24px; align-items: center; border-bottom: 1px solid var(--line); }
.contact-list span { color: var(--muted); font-size: 13px; }
.contact-list strong { font-size: clamp(18px, 2vw, 30px); font-weight: 500; font-variant-numeric: tabular-nums; white-space: nowrap; }
.contact-list i { font-style: normal; font-size: 24px; white-space: nowrap; }

.home-inquiry, .model-inquiry { padding-block: 120px; background: #d8c28f; }
.inquiry-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 8vw; }
.inquiry-intro h2 { max-width: 570px; }
.inquiry-intro > p:last-of-type { margin-top: 26px; max-width: 520px; color: #445a51; }
.inquiry-form { width: 100%; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 22px; }
.inquiry-form label { display: flex; flex-direction: column; gap: 8px; }
.inquiry-form label span { font-size: 10px; letter-spacing: .13em; font-weight: 700; text-transform: uppercase; }
.inquiry-form input, .inquiry-form textarea { width: 100%; padding: 11px 2px; border: 0; border-bottom: 1px solid rgba(16,44,34,.45); border-radius: 0; color: var(--ink); background: transparent; outline: 0; }
.inquiry-form input:focus, .inquiry-form textarea:focus { border-bottom-color: var(--ink); box-shadow: 0 1px 0 var(--ink); }
.inquiry-form textarea { resize: vertical; }
.form-wide { grid-column: 1 / -1; }
.form-submit { margin-top: 30px; }
.form-submit:disabled { opacity: .6; cursor: wait; }
.form-message { margin: 18px 0 0; font-size: 13px; }
.form-message.success { color: #174b34; }
.form-message.error { color: #8a2a24; }

.site-footer { padding: 54px 5vw; display: grid; grid-template-columns: 1fr auto; gap: 50px; align-items: end; background: var(--deep); color: white; }
.site-footer > div:first-child img { width: 210px; height: 90px; padding: 8px; object-fit: contain; background: white; }
.site-footer p { margin: 18px 0 0; color: #96aaa0; font-size: 11px; letter-spacing: .05em; }
.site-footer > div:nth-child(2) { display: flex; gap: 30px; font-size: 12px; }
.site-footer > p { grid-column: 1 / -1; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.15); }

.model-hero { padding-block: 88px 76px; }
.back-link { display: inline-block; margin-bottom: 70px; color: var(--muted); font-size: 12px; letter-spacing: .06em; }
.model-hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 8vw; align-items: end; }
.model-hero h1 { font-size: clamp(58px, 7vw, 112px); }
.model-summary p { margin: 0; font-size: 18px; line-height: 1.75; }
.model-summary span { display: block; margin-top: 20px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.model-viewer { padding-block: 76px 120px; border-top: 1px solid var(--line); }
.viewer-heading { margin-bottom: 42px; display: flex; justify-content: space-between; gap: 40px; align-items: end; }
.model-viewer h2 { font-size: clamp(38px, 4.2vw, 62px); }
.variant-tabs { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; max-width: 58%; }
.variant-tabs button { padding: 11px 16px; border: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; }
.variant-tabs button.is-active { background: var(--deep); border-color: var(--deep); color: white; }
.gallery-layout { display: grid; grid-template-columns: 1fr 138px; gap: 18px; }
.gallery-main { height: clamp(500px, 68vh, 680px); min-height: 0; padding: 30px; display: flex; flex-direction: column; background: #e4eae5; overflow: hidden; }
.gallery-main > img { flex: 1; min-height: 0; width: 100%; object-fit: contain; }
.gallery-caption { padding-top: 18px; display: flex; justify-content: space-between; font-size: 11px; letter-spacing: .1em; color: var(--muted); }
.gallery-thumbs { height: clamp(500px, 68vh, 680px); max-height: none; display: flex; flex-direction: column; gap: 10px; overflow-y: auto; }
.gallery-thumbs button { flex: 0 0 104px; padding: 4px; border: 1px solid transparent; background: #ecebe5; cursor: pointer; }
.gallery-thumbs button.is-active { border-color: var(--gold); }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: contain; }
.compact-footer { grid-template-columns: auto 1fr; }
.compact-footer > img { width: 190px; height: 78px; padding: 7px; object-fit: contain; background: white; }
.compact-footer p { margin: 0; }
.is-hidden { display: none !important; }

@media (max-width: 1100px) {
  :root { --shell: min(100% - 48px, 1000px); }
  .site-header { grid-template-columns: 190px 1fr auto; padding-inline: 24px; }
  .primary-nav { gap: 20px; }
  .header-quote { display: none; }
  .home-hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { min-height: 610px; padding-inline: 8vw; }
  .hero-copy h1 { font-size: clamp(58px, 11vw, 96px); }
  .hero-visual { min-height: 560px; }
  .hero-vehicle { width: min(85vw, 850px); }
  .factory-section .section-shell { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .factory-copy { grid-template-columns: 1fr; gap: 18px; }
  .factory-copy > p:last-child { justify-self: start; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100% - 32px); }
  .site-header { height: 70px; grid-template-columns: 1fr auto; gap: 12px; padding-inline: 16px; }
  .brand { width: 142px; height: 68px; }
  .brand img { width: 160px; height: 160px; flex-basis: 160px; }
  .primary-nav { display: none; }
  .header-actions { gap: 0; }
  .language-switch { padding: 7px 10px; }
  .home-hero { min-height: calc(100svh - 70px); grid-template-rows: auto 42vh; }
  .hero-copy { min-height: auto; padding: 56px 22px 30px; justify-content: flex-start; }
  .hero-copy h1 { max-width: 620px; font-size: clamp(39px, 11.5vw, 62px); line-height: .98; }
  .hero-copy > p:not(.hero-kicker) { margin-top: 22px; font-size: 14px; line-height: 1.65; }
  .hero-actions { margin-top: 28px; gap: 20px; flex-wrap: wrap; }
  .button { min-height: 52px; padding-inline: 18px; }
  .hero-visual { min-height: 0; }
  .hero-vehicle { width: 100vw; max-width: none; }
  .hero-model-mark span { font-size: 36px; }
  .catalog-section, .solutions-section, .contact-section { padding-block: 84px; }
  .split-heading, .solutions-section, .contact-section, .inquiry-layout, .model-hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .section-heading h2, .factory-copy h2, .solution-panel h2, .contact-section h2, .inquiry-intro h2 { font-size: 44px; }
  .category-tabs { width: 100%; flex-wrap: nowrap; overflow-x: auto; }
  .category-tabs button { white-space: nowrap; }
  .series-grid { display: block; }
  .series-card { margin-bottom: 18px; }
  .series-image { height: 365px; }
  .series-copy { padding-bottom: 42px; }
  .series-copy h3 { font-size: 29px; }
  .factory-section { padding-block: 84px; }
  .factory-section .section-shell { grid-template-columns: 1fr; }
  .factory-copy { grid-column: auto; padding: 0; }
  .factory-primary img, .factory-secondary img { height: auto; aspect-ratio: 16 / 10; }
  .solution-images { height: 420px; }
  .contact-list a { grid-template-columns: 1fr auto; gap: 8px; padding-block: 18px; }
  .contact-list strong { grid-column: 1; }
  .contact-list i { grid-column: 2; grid-row: 1 / 3; }
  .home-inquiry, .model-inquiry { padding-block: 84px; }
  .form-grid { grid-template-columns: 1fr; gap: 20px; }
  .form-wide { grid-column: auto; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer > div:nth-child(2) { flex-wrap: wrap; }
  .model-hero { padding-block: 52px 62px; }
  .back-link { margin-bottom: 48px; }
  .model-hero h1 { font-size: 54px; }
  .viewer-heading { display: block; }
  .variant-tabs { max-width: 100%; justify-content: flex-start; margin-top: 28px; }
  .gallery-layout { grid-template-columns: 1fr; }
  .gallery-main { height: auto; min-height: 400px; padding: 14px; overflow: visible; }
  .gallery-thumbs { height: auto; flex-direction: row; max-height: none; overflow-x: auto; }
  .gallery-thumbs button { flex-basis: 92px; height: 78px; }
  .compact-footer { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* V7.3 refinement: cache-safe hero, compact galleries and divider-based contacts. */
.site-header { grid-template-columns: 230px 1fr auto; }
.primary-nav { gap: clamp(22px, 2.65vw, 48px); }
.header-quote { display: inline-flex; align-items: center; gap: 16px; }
.header-quote > span[aria-hidden="true"] { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--deep); color: white; font-size: 15px; }

.home-hero.hero-course {
  min-height: calc(100vh - 82px);
  display: block;
  position: relative;
  color: white;
  background: var(--deep);
  overflow: hidden;
}
.hero-background { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: center; }
.hero-scrim { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(5,37,28,.94) 0%, rgba(5,37,28,.82) 33%, rgba(5,37,28,.24) 62%, rgba(5,37,28,0) 84%); pointer-events: none; }
.hero-course .hero-copy { min-height: calc(100vh - 82px); width: min(820px, 61vw); padding: clamp(80px, 10vh, 124px) 3vw clamp(70px, 8vh, 104px) 7.5vw; justify-content: center; z-index: 2; }
.hero-course .hero-kicker { color: #f4d98e; }
.hero-course .hero-kicker::before { content: ""; width: 38px; height: 1px; margin-right: 15px; display: inline-block; vertical-align: middle; background: var(--gold); }
.hero-course .hero-copy h1 { display: grid; row-gap: .035em; color: white; font-family: Georgia, "Times New Roman", serif; font-size: clamp(66px, 7.15vw, 126px); line-height: .96; letter-spacing: -.06em; }
.hero-course .hero-copy h1 span { white-space: nowrap; }
html[lang="zh-CN"] .hero-course .hero-copy h1 span:empty { display: none; }
.hero-course .hero-copy > p:not(.hero-kicker) { max-width: 610px; margin-top: 44px; color: rgba(255,255,255,.92); font-size: clamp(15px, 1.12vw, 20px); line-height: 1.72; }
.hero-course .hero-actions { margin-top: 48px; }
.hero-course[data-language="zh"] .hero-copy h1, main[data-language="zh"] .hero-course .hero-copy h1 { row-gap: .12em; font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif; font-size: clamp(58px, 6.25vw, 106px); line-height: 1.14; letter-spacing: -.035em; }
.hero-course .text-link { color: white; border-color: rgba(255,255,255,.7); }

.factory-section { padding-block: 112px; }
.catalog-section { padding-block: 110px; }
.split-heading { grid-template-columns: 1.05fr .95fr; gap: 7vw; align-items: end; }
.section-heading h2 { max-width: 850px; font-size: clamp(44px, 4.7vw, 76px); }
.series-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 42px 24px; }
.series-card, .series-card:nth-child(5n + 1), .series-card:nth-child(5n + 2) { grid-column: auto; padding-top: 12px; }
.series-image, .series-card:nth-child(even) .series-image { height: clamp(250px, 22vw, 340px); padding: 14px; background: #fff; border: 1px solid rgba(16,44,34,.12); }
.series-image img { width: 100%; height: 100%; object-fit: contain; }
.series-meta { padding-block: 11px; }
.series-copy { padding: 17px 2px 14px; }
.series-copy h3 { font-size: clamp(23px, 1.9vw, 31px); }
.series-copy div > span { margin-top: 9px; font-size: 12px; line-height: 1.6; }
.series-copy > a { width: 46px; height: 46px; }

.contact-list a { grid-template-columns: .5fr 1fr auto; }
.contact-list i { color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }

.site-footer { padding: 42px 5vw 30px; gap: 34px; }
.site-footer .footer-brand { display: block; }
.footer-logo { width: 240px; height: 124px; overflow: hidden; position: relative; background: #f7f5ef; border: 0; }
.footer-logo img { width: 320px !important; height: 320px !important; max-width: none; padding: 0 !important; position: absolute; left: -42px; top: -99px; object-fit: contain; background: transparent !important; }
.site-footer .footer-nav { display: flex; gap: 30px; font-size: 12px; }
.site-footer > p { margin-top: 0; padding-top: 25px; }

.model-viewer { padding-bottom: 0; }
.model-guidance { margin-top: 84px; padding: 72px 0 104px; border-top: 1px solid var(--line); }
.guidance-heading { display: grid; grid-template-columns: 1fr 2fr; align-items: end; gap: 40px; margin-bottom: 42px; }
.guidance-heading h2 { max-width: 850px; font-size: clamp(40px, 4.4vw, 68px); }
.guidance-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.guidance-grid article { min-height: 250px; padding: 30px 36px 34px 0; }
.guidance-grid article + article { padding-left: 36px; border-left: 1px solid var(--line); }
.guidance-grid article > span { color: var(--gold); font-size: 11px; letter-spacing: .15em; }
.guidance-grid h3 { margin: 4px 0 15px; font-size: 13px; letter-spacing: .11em; text-transform: uppercase; }
.guidance-grid p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }

.detail-contact-section { padding-block: 112px; color: var(--ink); background: #edf1ed; border-top: 16px solid var(--paper); }
.detail-contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 8vw; align-items: start; }
.detail-contact-layout h2 { max-width: 650px; margin: 0; font-size: clamp(44px, 5vw, 76px); line-height: 1.03; letter-spacing: -.05em; font-weight: 500; }
.detail-contact-layout > div:first-child > p:last-child { max-width: 520px; margin: 25px 0 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.detail-contact-section .section-eyebrow { color: var(--gold); }
.detail-contact-list { margin-top: 4px; }
.detail-contact-list a { min-height: 126px; grid-template-columns: .48fr minmax(230px, 1fr) auto; }
.detail-contact-list strong { font-size: clamp(20px, 2vw, 30px); }
.detail-contact-list i { color: var(--ink); }
.model-inquiry { background: #d8c28f; }
.model-inquiry .section-index, .model-inquiry .section-eyebrow { color: var(--ink); }
.compact-footer { grid-template-columns: auto 1fr; align-items: center; }
.compact-footer > p { grid-column: auto; padding: 0; border: 0; }

@media (max-width: 1100px) {
  .site-header { grid-template-columns: 190px 1fr auto; }
  .primary-nav { gap: 16px; }
  .primary-nav a { font-size: 11px; }
  .hero-course .hero-copy { width: min(730px, 70vw); padding-left: 7vw; }
  .hero-course .hero-copy h1 { font-size: clamp(68px, 9vw, 102px); }
  .series-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .series-image { height: 330px; }
}

@media (max-width: 760px) {
  .header-quote { display: none; }
  .home-hero.hero-course { min-height: calc(100dvh - 70px); }
  .home-hero.hero-course::after { content: none; }
  .hero-background { object-position: 62% center; }
  .hero-scrim { background: linear-gradient(180deg, rgba(5,37,28,.92) 0%, rgba(5,37,28,.74) 58%, rgba(5,37,28,.36) 100%); }
  .hero-course .hero-copy { min-height: calc(100dvh - 70px); width: 100%; padding: 64px 22px 48px; position: relative; z-index: 2; justify-content: center; }
  .hero-course .hero-copy h1 { font-size: clamp(52px, 16.5vw, 74px); line-height: 1; row-gap: .06em; }
  main[data-language="zh"] .hero-course .hero-copy h1 { font-size: clamp(45px, 14vw, 62px); line-height: 1.16; row-gap: .16em; }
  .hero-course .hero-copy > p:not(.hero-kicker) { max-width: 96%; margin-top: 34px; line-height: 1.72; }
  .hero-course .hero-actions { margin-top: 36px; display: grid; justify-items: start; gap: 22px; }
  .factory-section { padding-block: 78px; }
  .catalog-section { padding-block: 80px; }
  .series-grid { grid-template-columns: 1fr; }
  .series-card { margin-bottom: 0; }
  .series-image { height: 300px; }
  .guidance-heading, .guidance-grid, .detail-contact-layout { grid-template-columns: 1fr; }
  .model-guidance { margin-top: 60px; padding: 58px 0 76px; }
  .guidance-grid article { min-height: 0; padding: 28px 0; }
  .guidance-grid article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .guidance-grid h3 { margin-top: 23px; }
  .detail-contact-section { padding-block: 78px; border-top-width: 10px; }
  .detail-contact-list { margin-top: 10px; }
  .detail-contact-list a { min-height: 112px; grid-template-columns: minmax(0, 1fr) auto; gap: 10px 16px; padding-block: 20px; }
  .detail-contact-list span { grid-column: 1; grid-row: 1; }
  .detail-contact-list strong { grid-column: 1; grid-row: 2; font-size: 18px; }
  .detail-contact-list i { grid-column: 2; grid-row: 1 / 3; align-self: center; font-size: 11px; }
  .footer-logo { width: 210px; height: 108px; }
  .footer-logo img { width: 280px !important; height: 280px !important; left: -37px; top: -86px; }
}

.solution-panel > .section-eyebrow { margin: 0 0 20px; color: var(--gold); font-size: 11px; line-height: 1; }

/* V17: 99 finished vehicle renders, one exact image for every colour and wheel pairing. */
.customizer-section { padding-block: 126px; display: grid; grid-template-columns: .72fr 1.28fr; gap: 6vw; align-items: start; }
.customizer-copy { position: sticky; top: 42px; padding-top: 20px; }
.customizer-copy h2, .specification-heading h2 { margin: 0; font-size: clamp(44px, 4.8vw, 76px); line-height: 1.04; letter-spacing: -.05em; font-weight: 500; }
.customizer-copy > p:not(.section-eyebrow) { max-width: 570px; margin: 28px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.selected-combination { margin: 38px 0 28px; padding: 18px 0; display: grid; gap: 8px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.selected-combination span { color: var(--muted); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.selected-combination strong { font-size: 17px; font-weight: 600; }
.customizer-card { min-width: 0; padding: 18px; background: #e8ede9; }
.customizer-stage { position: relative; isolation: isolate; aspect-ratio: 1276 / 850; overflow: hidden; background: #fff; border: 1px solid rgba(16,44,34,.12); }
.customizer-vehicle { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: contain; animation: vehicle-finish-change .3s ease both; }
.preview-change { position: absolute; z-index: 2; inset: 0; border: 3px solid rgba(205,169,87,.64); pointer-events: none; animation: configuration-change .42s ease both; }
@keyframes configuration-change { 0% { opacity: 0; transform: scale(.992); } 35% { opacity: 1; } 100% { opacity: 0; transform: scale(1); } }
@keyframes vehicle-finish-change { from { opacity: .76; } to { opacity: 1; } }
.customizer-controls { display: grid; grid-template-columns: .58fr 1.42fr; gap: 24px; padding: 24px 4px 6px; }
.customizer-controls fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.customizer-controls legend { margin-bottom: 14px; font-size: 10px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.color-options > div { display: flex; flex-wrap: wrap; gap: 8px; }
.color-options button { width: 42px; height: 42px; padding: 4px; border: 1px solid var(--line); border-radius: 50%; background: white; cursor: pointer; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.color-options button span { width: 100%; height: 100%; display: block; border-radius: 50%; border: 1px solid rgba(16,44,34,.13); }
.color-options button:hover { transform: translateY(-2px); }
.color-options button:active { transform: scale(.96); }
.color-options button:focus-visible, .wheel-options button:focus-visible { outline: 3px solid rgba(16,44,34,.35); outline-offset: 3px; }
.color-options button.is-active { border-color: var(--deep); box-shadow: 0 0 0 3px #fff, 0 0 0 5px var(--deep); }
.color-options > strong { display: block; margin-top: 13px; color: var(--muted); font-size: 12px; font-weight: 500; }
.wheel-options > div { display: grid; grid-template-columns: repeat(4, minmax(74px, 1fr)); gap: 10px; }
.wheel-options button { min-width: 0; padding: 7px 7px 8px; border: 1px solid rgba(16,44,34,.22); background: #fff; cursor: pointer; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.wheel-options button > span { position: relative; width: 100%; aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; background: #1b201e; }
.wheel-options button > span::before { content: ""; position: absolute; width: 86%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, #242927 0 59%, #111514 61% 75%, #080a09 78% 100%); box-shadow: inset 0 0 0 5px rgba(2,4,3,.82), 0 3px 10px rgba(3,10,7,.3); }
.wheel-options button > span img { position: relative; z-index: 1; width: 68%; height: 68%; object-fit: contain; filter: contrast(1.12) saturate(.9); }
.wheel-options button small { display: block; margin-top: 6px; color: var(--muted); font-size: 9px; letter-spacing: .1em; }
.wheel-options button:hover { transform: translateY(-2px); }
.wheel-options button:active { transform: scale(.98); }
.wheel-options button.is-active { border-color: var(--deep); box-shadow: inset 0 0 0 2px var(--deep); }
.customizer-note { margin: 16px 4px 0; color: var(--muted); font-size: 11px; line-height: 1.65; }

.specification-section { margin-top: 62px; padding: 64px clamp(22px, 4vw, 58px); background: #edf1ed; border-top: 8px solid var(--deep); }
.specification-heading { margin-bottom: 48px; display: grid; grid-template-columns: 1.08fr .92fr; gap: 8vw; align-items: end; }
.specification-heading h2 { font-size: clamp(38px, 4vw, 64px); }
.specification-heading > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.specification-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 42px; }
.specification-card { min-width: 0; padding: 24px; background: #fff; border-top: 3px solid var(--ink); }
.specification-card h3 { margin: 0 0 18px; color: var(--gold); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.specification-card dl { margin: 0; }
.specification-card dl > div { min-height: 54px; padding: 12px 0; display: grid; grid-template-columns: minmax(130px, .8fr) 1.2fr; gap: 20px; align-items: start; border-top: 1px solid var(--line); }
.specification-card dt { color: var(--muted); font-size: 12px; line-height: 1.55; }
.specification-card dd { margin: 0; font-size: 13px; font-weight: 600; line-height: 1.55; overflow-wrap: anywhere; }
.parameter-sheet-block { margin-top: 52px; padding: 30px; display: grid; grid-template-columns: .42fr .58fr; gap: 40px; align-items: center; background: #edf1ed; }
.parameter-sheet-block h3 { margin: 0 0 20px; font-size: clamp(28px, 3vw, 46px); font-weight: 500; }
.parameter-sheet-block > div > a { display: inline-flex; padding-bottom: 6px; border-bottom: 1px solid var(--ink); font-size: 12px; font-weight: 700; }
.parameter-sheet-frame { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: white; border: 1px solid var(--line); }
.parameter-sheet-frame img { position: absolute; width: 75%; height: auto; max-width: none; left: 50%; top: 50%; transform: translate(-50%,-50%) rotate(90deg); }

@media (max-width: 1100px) {
  .customizer-section { grid-template-columns: 1fr; gap: 52px; }
  .customizer-copy { position: static; max-width: 800px; }
}

@media (max-width: 760px) {
  .customizer-section { padding-block: 82px; }
  .customizer-copy h2, .specification-heading h2 { font-size: 43px; }
  .customizer-card { padding: 10px; }
  .customizer-stage { aspect-ratio: 1276 / 850; }
  .customizer-vehicle { object-fit: contain; }
  .customizer-controls { grid-template-columns: 1fr; gap: 18px; padding: 18px 2px 4px; }
  .customizer-controls legend { margin-bottom: 10px; }
  .wheel-options > div { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
  .wheel-options button { padding: 4px 3px 5px; }
  .wheel-options button small { margin-top: 3px; font-size: 8px; letter-spacing: .06em; }
  .wheel-options button > span::before { width: 88%; box-shadow: inset 0 0 0 3px rgba(2,4,3,.82), 0 2px 6px rgba(3,10,7,.24); }
  .wheel-options button > span img { width: 70%; height: 70%; }
  .specification-section { margin-top: 62px; padding-top: 58px; }
  .specification-heading, .specification-groups, .parameter-sheet-block { grid-template-columns: 1fr; }
  .specification-heading { gap: 22px; margin-bottom: 38px; }
  .specification-groups { gap: 32px; }
  .specification-card dl > div { grid-template-columns: minmax(110px, .8fr) 1.2fr; gap: 14px; }
  .parameter-sheet-block { padding: 18px; }
}