:root{
  --bg:#FAF7F2;
  --surface:#FFFFFF;
  --surface-warm:#F3EDE4;
  --ink:#2B2622;
  --ink-soft:#6B625A;
  --primary:#B5462E;
  --primary-dark:#8F3422;
  --gold:#C8A15A;
  --border:rgba(43,38,34,0.12);
  --border-soft:rgba(43,38,34,0.08);
  --radius:18px;
  --radius-lg:24px;
  --shadow:0 10px 34px rgba(43,38,34,0.08);
  --shadow-soft:0 4px 18px rgba(43,38,34,0.06);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
* {box-sizing:border-box;margin:0;padding:0;}
html {scroll-behavior:smooth;}
body {font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
.wrap {max-width:1180px;margin:0 auto;padding:0 24px;}
h1,h2,h3 {font-family:var(--serif);font-weight:700;line-height:1.3;}
a {color:inherit;text-decoration:none;}
img {max-width:100%;}

/* utility */
.eyebrow {display:inline-block;font-size:13px;letter-spacing:2px;color:var(--primary);font-weight:500;margin-bottom:14px;text-transform:uppercase;}
.btn {display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;font-weight:500;font-size:16px;border:1px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;}
.btn-primary {background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(181,70,46,0.28);}
.btn-primary:hover {background:var(--primary-dark);transform:translateY(-2px);}
.btn-ghost {background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover {background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-gold {background:transparent;border-color:var(--gold);color:var(--gold);}
.btn-gold:hover {background:var(--gold);color:#fff;transform:translateY(-2px);}
.ph {background:repeating-linear-gradient(45deg,var(--surface-warm),var(--surface-warm) 12px,#efe6d8 12px,#efe6d8 24px);border:1px dashed var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:13px;text-align:center;padding:12px;}
img.cover {width:100%;height:100%;object-fit:cover;display:block;}

/* nav */
header.nav {position:sticky;top:0;z-index:50;background:rgba(250,247,242,0.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft);}
.nav-inner {display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand {display:flex;align-items:center;gap:12px;font-family:var(--serif);font-weight:700;font-size:19px;}
.brand .logo {width:40px;height:40px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;}
.brand .logo-img {width:48px;height:48px;border-radius:14px;object-fit:contain;background:#fff;border:1px solid var(--border-soft);padding:2px;display:block;box-shadow:0 1px 4px rgba(43,38,34,0.06);}
.nav-links {display:flex;gap:30px;align-items:center;}
.nav-links a {font-size:15px;color:var(--ink-soft);transition:color .2s;position:relative;}
.nav-links a:hover {color:var(--primary);}
.nav-links a.active {color:var(--primary);font-weight:500;}
.nav-links a.active::after {content:"";position:absolute;bottom:-6px;left:0;width:100%;height:2px;background:var(--primary);border-radius:1px;}
.nav-cta {display:flex;align-items:center;gap:14px;}
.mobile-menu {display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink);}

/* hero */
.hero {padding:64px 0 72px;}
.hero-grid {display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center;}
.hero h1 {font-size:clamp(38px,5vw,60px);letter-spacing:1px;}
.hero h1 .accent {color:var(--primary);}
.hero p.lead {font-size:18px;color:var(--ink-soft);margin:22px 0 14px;max-width:32em;}
.hero .tags {display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 30px;}
.tag {background:var(--surface-warm);border:1px solid var(--border-soft);border-radius:999px;padding:7px 16px;font-size:14px;color:var(--ink-soft);}
.hero-actions {display:flex;gap:16px;flex-wrap:wrap;}
.hero-img {height:420px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);}
.hero-sm {padding:56px 0 60px;text-align:center;}
.hero-sm h1 {font-size:clamp(32px,4.5vw,52px);}
.hero-sm p.lead {max-width:640px;margin:18px auto 0;color:var(--ink-soft);font-size:18px;}

/* trust strip */
.trust {border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);background:var(--surface);}
.trust-inner {display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 0;flex-wrap:wrap;}
.trust .label {font-size:14px;color:var(--ink-soft);}
.brands {display:flex;gap:12px;flex-wrap:wrap;align-items:center;}
.brands span {font-family:var(--serif);font-weight:700;font-size:20px;color:var(--ink);opacity:.78;letter-spacing:1px;display:inline-flex;align-items:center;gap:9px;}
.brands .bmw-roundel {display:block;flex:none;opacity:1;}

/* stats */
.stats {background:var(--surface-warm);border-bottom:1px solid var(--border-soft);}
.stats-grid {display:grid;grid-template-columns:repeat(5,1fr);gap:20px;padding:42px 0;text-align:center;}
.stat .num {font-family:var(--serif);font-size:42px;color:var(--primary);font-weight:700;line-height:1;}
.stat .unit {font-size:16px;color:var(--primary);font-weight:500;}
.stat p {font-size:14px;color:var(--ink-soft);margin-top:8px;}

/* section */
section.block {padding:80px 0;}
.sec-head {max-width:680px;margin-bottom:48px;}
.sec-head h2 {font-size:clamp(28px,3.4vw,40px);margin-bottom:14px;}
.sec-head p {color:var(--ink-soft);font-size:17px;}
.sec-head.center {text-align:center;margin-left:auto;margin-right:auto;}

/* cards */
.cards {display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card {background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-soft);transition:transform .3s ease,box-shadow .3s ease;}
.card:hover {transform:translateY(-4px);box-shadow:var(--shadow);}
.card .ic {width:52px;height:52px;border-radius:14px;background:var(--surface-warm);border:1px solid var(--border-soft);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:13px;margin-bottom:18px;font-weight:500;}
.card h3 {font-size:19px;margin-bottom:8px;}
.card p {color:var(--ink-soft);font-size:15px;}
.card-img-top {border-radius:var(--radius-lg) var(--radius-lg) 0 0;overflow:hidden;height:200px;}
.card-img-top img {width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-img-top img {transform:scale(1.04);}
.card-body {padding:22px 24px;}

/* why */
.why {background:var(--surface);}
.why-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.why-item {text-align:left;}
.why-item .num {font-family:var(--serif);font-size:34px;color:var(--gold);font-weight:700;margin-bottom:10px;}
.why-item h3 {font-size:17px;margin-bottom:8px;}
.why-item p {color:var(--ink-soft);font-size:14px;}

/* about */
.about-grid {display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-img {height:360px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);}
.about-txt h2 {font-size:clamp(28px,3.4vw,38px);margin-bottom:18px;}
.about-txt p {color:var(--ink-soft);margin-bottom:14px;}
.about-txt .quote {font-family:var(--serif);font-size:22px;color:var(--primary);margin-top:22px;padding-left:18px;border-left:3px solid var(--gold);line-height:1.5;}

/* cases */
.case-grid {display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.case {background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft);transition:transform .3s ease;}
.case:hover {transform:translateY(-4px);}
.case .img {height:220px;overflow:hidden;}
.case .img img {width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case:hover .img img {transform:scale(1.04);}
.case .body {padding:22px 24px;}
.case .body .eyebrow {margin-bottom:8px;}
.case .body h3 {font-size:18px;margin-bottom:8px;}
.case .body p {color:var(--ink-soft);font-size:14px;}

.case-detail {background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-soft);border:1px solid var(--border-soft);}
.case-row {display:grid;grid-template-columns:1fr 1fr;align-items:stretch;}
.case-row:nth-child(even) .case-detail-img {order:2;}
.case-detail-img {min-height:280px;}
.case-detail-txt {padding:42px 44px;display:flex;flex-direction:column;justify-content:center;}
.case-detail-txt .eyebrow {margin-bottom:10px;}
.case-detail-txt h3 {font-size:24px;margin-bottom:16px;}
.case-detail-txt p {color:var(--ink-soft);margin-bottom:14px;font-size:15px;}
.case-result {background:var(--surface-warm);border-left:3px solid var(--gold);padding:14px 18px;border-radius:0 12px 12px 0;margin-top:8px;}
.case-result strong {color:var(--primary);}

/* gallery */
.gallery-grid {display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.gallery-item {border-radius:var(--radius-lg);overflow:hidden;height:220px;box-shadow:var(--shadow-soft);transition:transform .3s ease;position:relative;}
.gallery-item:hover {transform:translateY(-3px);}
.gallery-item img {width:100%;height:100%;object-fit:cover;}
.gallery-item .cap {position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(43,38,34,0.75));color:#fff;font-size:14px;padding:34px 14px 14px;}

/* cta band */
.cta-band {padding:0 0 80px;}
.cta-card {background:linear-gradient(135deg,#fff,#fbf3ec);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:54px 48px;box-shadow:var(--shadow);text-align:center;}
.cta-card h2 {font-size:clamp(26px,3vw,36px);margin-bottom:12px;}
.cta-card p {color:var(--ink-soft);margin-bottom:26px;font-size:17px;}

/* inner feature list */
.feature-list {list-style:none;}
.feature-list li {padding:12px 0 12px 30px;position:relative;color:var(--ink-soft);border-bottom:1px solid var(--border-soft);}
.feature-list li:last-child {border-bottom:none;}
.feature-list li::before {content:"✓";position:absolute;left:0;color:var(--primary);font-weight:700;}

/* timeline */
.timeline {position:relative;padding-left:32px;}
.timeline::before {content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border);}
.timeline-item {position:relative;margin-bottom:28px;}
.timeline-item::before {content:"";position:absolute;left:-32px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--primary);border:3px solid var(--bg);}
.timeline-item h4 {font-family:var(--serif);font-size:18px;margin-bottom:6px;}
.timeline-item p {color:var(--ink-soft);font-size:14px;}

/* contact */
.contact-grid {display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:start;}
.contact-card {background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-soft);margin-bottom:24px;}
.contact-card h3 {font-size:20px;margin-bottom:18px;}
.contact-item {display:flex;gap:14px;margin-bottom:18px;align-items:flex-start;}
.contact-item .icon {width:42px;height:42px;border-radius:12px;background:var(--surface-warm);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0;font-weight:700;}
.contact-item .txt h4 {font-size:15px;margin-bottom:4px;}
.contact-item .txt p {color:var(--ink-soft);font-size:14px;line-height:1.6;}
.map-box {height:220px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-soft);background:var(--surface-warm);display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:13px;text-align:center;}

/* form */
.form-card {background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow);}
.form-group {margin-bottom:20px;}
.form-group label {display:block;font-size:14px;margin-bottom:7px;color:var(--ink);font-weight:500;}
.form-group input,.form-group select,.form-group textarea {width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:var(--bg);font-family:inherit;font-size:15px;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus {border-color:var(--primary);box-shadow:0 0 0 3px rgba(181,70,46,0.12);}
.form-group textarea {min-height:110px;resize:vertical;}
.form-row {display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-hint {font-size:13px;color:var(--ink-soft);margin-top:6px;}

/* process */
.process-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.process-step {background:var(--surface);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:24px;text-align:center;box-shadow:var(--shadow-soft);}
.process-step .num {width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:700;margin:0 auto 14px;font-size:18px;}
.process-step h4 {font-size:16px;margin-bottom:8px;}
.process-step p {font-size:14px;color:var(--ink-soft);}

/* contact modal fallback for desktop tel: links */
.bq-modal {position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;}
.bq-modal.open {display:flex;}
.bq-modal-backdrop {position:absolute;inset:0;background:rgba(43,38,34,0.55);backdrop-filter:blur(4px);}
.bq-modal-card {position:relative;background:var(--surface);border-radius:var(--radius-lg);padding:34px 30px;width:100%;max-width:420px;box-shadow:0 24px 60px rgba(43,38,34,0.18);text-align:center;animation:bqModalIn .25s ease;}
@keyframes bqModalIn {from {opacity:0;transform:translateY(18px);} to {opacity:1;transform:translateY(0);}}
.bq-modal-close {position:absolute;top:14px;right:18px;background:none;border:none;font-size:28px;line-height:1;color:var(--ink-soft);cursor:pointer;}
.bq-modal-close:hover {color:var(--primary);}
.bq-modal-card h3 {font-size:24px;margin-bottom:6px;}
.bq-modal-sub {font-size:13px;color:var(--ink-soft);margin-bottom:24px;}
.bq-modal-row {display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg);border:1px solid var(--border-soft);border-radius:12px;padding:14px 16px;margin-bottom:12px;}
.bq-modal-label {font-size:13px;color:var(--ink-soft);min-width:3em;text-align:left;}
.bq-modal-value {font-size:17px;font-weight:500;color:var(--ink);flex:1;text-align:left;}
.bq-modal-copy {background:transparent;border:1px solid var(--primary);color:var(--primary);border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer;transition:all .2s;}
.bq-modal-copy:hover {background:var(--primary);color:#fff;}
.bq-modal-call {margin-top:18px;width:100%;justify-content:center;}
.bq-modal-form {margin-top:10px;width:100%;justify-content:center;background:transparent;color:var(--primary);border:1px solid var(--primary);}
.bq-modal-form:hover {background:var(--primary);color:#fff;}

/* footer */
footer {background:var(--ink);color:#EDE6DD;padding:60px 0 30px;}
.foot-grid {display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
footer h3 {font-family:var(--serif);font-size:18px;color:#fff;margin-bottom:16px;}
footer p,footer a {color:#C9BFB4;font-size:14px;line-height:1.9;}
footer a:hover {color:var(--gold);}
.foot-map {height:160px;border-radius:var(--radius);overflow:hidden;position:relative;background:#e8dfd3;}
.foot-map iframe {width:100%;height:100%;border:none;display:block;}
.foot-map .map-overlay {position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(240,234,226,0.92);pointer-events:none;}
.foot-map .map-overlay span {color:var(--ink);font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:2px;padding:0 16px;text-align:center;}
.foot-map .map-nav {position:absolute;bottom:10px;left:10px;right:10px;display:flex;gap:8px;justify-content:center;z-index:2;}
.foot-map .map-nav a {background:rgba(43,38,34,0.85);color:#fff;padding:8px 14px;border-radius:999px;font-size:13px;text-decoration:none;backdrop-filter:blur(4px);}
.foot-map .map-nav a:hover {background:var(--primary);}
.foot-bottom {border-top:1px solid rgba(255,255,255,0.1);margin-top:40px;padding-top:20px;font-size:13px;color:#9C9186;text-align:center;}

@media(max-width:980px){
  .nav-links {display:none;position:absolute;top:72px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border-soft);padding:16px 24px;flex-direction:column;align-items:flex-start;gap:10px;}
  .nav-links.open {display:flex;}
  .mobile-menu {display:block;}
  .hero-grid {grid-template-columns:1fr;gap:30px;}
  .hero-img {height:280px;}
  .cards {grid-template-columns:1fr 1fr;}
  .why-grid {grid-template-columns:1fr 1fr;}
  .case-grid {grid-template-columns:1fr;}
  .gallery-grid {grid-template-columns:1fr 1fr;}
  .about-grid {grid-template-columns:1fr;}
  .stats-grid {grid-template-columns:1fr 1fr 1fr;}
  .foot-grid {grid-template-columns:1fr 1fr;}
  .case-row {grid-template-columns:1fr;}
  .case-row:nth-child(even) .case-detail-img {order:0;}
  .contact-grid {grid-template-columns:1fr;}
  .process-grid {grid-template-columns:1fr 1fr;}
  .form-row {grid-template-columns:1fr;}
}
@media(max-width:580px){
  .cards,.why-grid,.foot-grid,.stats-grid,.gallery-grid,.process-grid {grid-template-columns:1fr;}
  .cta-card {padding:40px 24px;}
  .case-detail-txt {padding:28px 24px;}
  .brand {font-size:16px;gap:9px;}
  .brand .logo-img {width:42px;height:42px;border-radius:12px;}
}