/* roulang page: index */
:root {
  --primary: #4E3E36;
  --primary-strong: #332A24;
  --accent: #7E9686;
  --accent-2: #B0926E;
  --bg: #F7F3EE;
  --bg-alt: #EAE3DA;
  --surface: #FFFFFF;
  --text: #2D2926;
  --text-muted: #6F655D;
  --border: #E2DACF;
  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-tag: 4px;
  --shadow-card: 0 2px 8px rgba(45, 41, 38, 0.04);
  --font-serif: "Noto Serif SC", Georgia, "Songti SC", serif;
  --font-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(--font-sans); background: var(--bg); color: var(--text); line-height: 1.8; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .3s ease; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; background: none; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-title { font-family: var(--font-serif); font-size: 30px; font-weight: 700; color: var(--primary-strong); text-align: center; line-height: 1.4; }
.section-sub { font-size: 14px; color: var(--text-muted); text-align: center; margin-top: 10px; letter-spacing: .5px; }
.section-break { width: 48px; height: 3px; background: var(--accent-2); border-radius: 2px; margin: 20px auto 0; }

.btn-primary { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 12px 32px; background: var(--primary); color: #fff; font-size: 15px; font-weight: 500; border-radius: var(--radius-btn); cursor: pointer; border: none; transition: background .3s ease, outline .3s ease, transform .2s ease; }
.btn-primary:hover { background: #3A2F28; outline: 2px solid rgba(126, 150, 134, .35); outline-offset: 2px; }
.btn-primary:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary:active { transform: scale(.98); }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 12px 32px; background: transparent; color: var(--primary); font-size: 15px; font-weight: 500; border: 1px solid var(--primary); border-radius: var(--radius-btn); cursor: pointer; transition: background .3s ease, transform .2s ease; }
.btn-secondary:hover { background: rgba(78, 62, 54, .05); outline: 2px solid rgba(126, 150, 134, .35); outline-offset: 2px; }
.btn-secondary:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-secondary:active { transform: scale(.98); }

header { position: fixed; top: 0; left: 0; right: 0; height: 72px; background: rgba(247, 243, 238, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); z-index: 1000; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 8px; font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--primary-strong); white-space: nowrap; }
.brand::after { content: ""; width: 8px; height: 8px; background: var(--accent-2); border-radius: 50%; display: inline-block; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 14px; font-weight: 400; color: var(--text); position: relative; padding: 8px 0; letter-spacing: .5px; }
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--primary-strong); font-weight: 500; }
.nav-links a.active::after { content: ""; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 16px; height: 3px; border-radius: 2px; background: var(--accent); }
.nav-cta { margin-left: 16px; }
.nav-cta a { display: inline-flex; align-items: center; min-height: 40px; padding: 0 20px; background: var(--primary); color: #fff; font-size: 14px; border-radius: var(--radius-btn); transition: background .3s ease, outline .3s ease; }
.nav-cta a:hover { background: #3A2F28; outline: 2px solid rgba(126, 150, 134, .3); outline-offset: 2px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 22px; height: 2px; background: var(--primary-strong); border-radius: 2px; }

.mobile-drawer { display: none; }
.mobile-drawer.open { display: flex; }
.mobile-drawer { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--bg); z-index: 2000; flex-direction: column; padding: 96px 32px 40px; }
.mobile-drawer a { font-family: var(--font-serif); font-size: 24px; color: var(--primary-strong); padding: 14px 0; border-bottom: 1px solid var(--border); }
.mobile-drawer .drawer-close { position: absolute; top: 20px; right: 24px; font-size: 32px; color: var(--text-muted); cursor: pointer; background: none; border: none; line-height: 1; padding: 8px; }
.mobile-drawer .drawer-contact { margin-top: auto; font-size: 14px; color: var(--text-muted); line-height: 2; }

.hero { position: relative; padding: 160px 0 100px; background: linear-gradient(180deg, rgba(51, 42, 36, .55), rgba(51, 42, 36, .72)), url("/assets/images/backpic/back-1.jpg") center / cover no-repeat; color: #fff; }
.hero-content { max-width: 780px; }
.hero h1 { font-family: var(--font-serif); font-size: 42px; font-weight: 700; line-height: 1.3; letter-spacing: 2px; margin-bottom: 20px; }
.hero-sub { font-size: 16px; line-height: 1.9; color: rgba(255, 255, 255, .9); max-width: 600px; margin-bottom: 36px; }
.hero-cta { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.hero-cta .btn-primary { background: #fff; color: var(--primary-strong); font-weight: 600; }
.hero-cta .btn-primary:hover { background: var(--bg); outline: 2px solid rgba(255, 255, 255, .4); }
.hero-text-link { color: #fff; font-size: 15px; text-decoration: underline; text-underline-offset: 6px; transition: color .3s; }
.hero-text-link:hover { color: var(--accent); }
.hero-meta { margin-top: 56px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .2); font-size: 13px; color: rgba(255, 255, 255, .7); letter-spacing: 3px; }
.hero-meta span { margin: 0 10px; }

.metrics { background: var(--surface); border-bottom: 1px solid var(--border); }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric-item { text-align: center; padding: 48px 16px; border-left: 1px solid var(--border); }
.metric-item:first-child { border-left: none; }
.metric-num { font-family: var(--font-serif); font-size: 38px; font-weight: 700; color: var(--primary-strong); font-variant-numeric: tabular-nums; line-height: 1.2; }
.metric-label { font-size: 13px; color: var(--text-muted); margin-top: 8px; letter-spacing: 1px; }

.services { padding: 100px 0; background: var(--bg); }
.services .container { max-width: 1200px; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px 32px; margin-top: 56px; }
.service-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease; position: relative; }
.service-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(45, 41, 38, .08); }
.service-card:nth-child(2), .service-card:nth-child(3) { transform: translateY(24px); }
.service-card:nth-child(2):hover, .service-card:nth-child(3):hover { transform: translateY(20px); border-color: var(--accent); }
.service-photo { position: relative; overflow: hidden; aspect-ratio: 3 / 2; }
.service-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.service-card:hover .service-photo img { transform: scale(1.03); }
.service-num { position: absolute; top: 16px; right: 16px; font-family: var(--font-serif); font-size: 15px; font-weight: 700; color: var(--accent-2); background: rgba(255, 255, 255, .9); border-radius: 4px; padding: 4px 10px; letter-spacing: 1px; z-index: 2; }
.service-body { padding: 28px 28px 24px; }
.service-body h3 { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--primary-strong); margin-bottom: 10px; }
.service-body p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin-bottom: 18px; }
.service-meta-row { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 16px; }
.service-meta { font-size: 13px; color: var(--text-muted); letter-spacing: .5px; }
.service-link { font-size: 14px; color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; transition: color .3s; }
.service-link:hover { color: var(--accent); }
.service-link::after { content: "→"; display: inline-block; transition: transform .3s ease; }
.service-link:hover::after { transform: translateX(3px); }

.comparison { padding: 100px 0; background: var(--bg-alt); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 56px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.compare-col { padding: 40px 32px; }
.compare-col.premium { border-left: 1px solid var(--border); border: 1px solid var(--accent); position: relative; background: var(--surface); box-shadow: 0 2px 12px rgba(45, 41, 38, .05); }
.compare-col.premium .premium-badge { position: absolute; top: 16px; left: -12px; background: var(--accent-2); color: #fff; font-size: 12px; font-weight: 500; padding: 4px 16px; border-radius: 2px; letter-spacing: 2px; transform: rotate(-90deg); transform-origin: left top; }
.compare-col.premium .premium-badge::after { content: ""; position: absolute; top: 100%; left: 0; border: 4px solid transparent; border-top-color: var(--accent-2); }
.compare-head { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--primary-strong); margin-bottom: 28px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.compare-col.premium .compare-head { color: var(--accent); }
.compare-row { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.compare-row:last-child { border-bottom: none; }
.compare-label { width: 84px; flex-shrink: 0; font-size: 14px; color: var(--text-muted); }
.compare-value { font-size: 14px; color: var(--text); line-height: 1.7; }
.compare-col.premium .compare-value { color: var(--primary-strong); font-weight: 500; }

.faq { padding: 100px 0; background: var(--bg); }
.faq-layout { max-width: 820px; margin: 56px auto 0; }
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-item:last-child { border-bottom: none; }
.accordion-title { display: flex; align-items: center; justify-content: space-between; width: 100%; text-align: left; padding: 26px 0; font-size: 18px; font-weight: 600; color: var(--primary-strong); cursor: pointer; background: none; border: none; transition: color .3s ease; }
.accordion-title:hover { color: var(--accent); }
.accordion-title:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.accordion-icon { width: 22px; height: 22px; border: 1.5px solid var(--border); border-radius: 50%; position: relative; flex-shrink: 0; transition: transform .3s ease, border-color .3s ease; }
.accordion-icon::before, .accordion-icon::after { content: ""; position: absolute; background: var(--primary); border-radius: 1px; transition: background .3s ease; }
.accordion-icon::before { width: 10px; height: 1.5px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.accordion-icon::after { width: 1.5px; height: 10px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.accordion-item.open .accordion-icon { transform: rotate(45deg); border-color: var(--accent); }
.accordion-item.open .accordion-icon::before, .accordion-item.open .accordion-icon::after { background: var(--accent); }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; padding: 0 40px 0 0; }
.accordion-content-inner { padding-bottom: 24px; font-size: 15px; color: var(--text-muted); line-height: 1.8; }
.accordion-content-inner p { margin-bottom: 12px; }
.accordion-content-inner p:last-child { margin-bottom: 0; }

.contact-section { padding: 100px 0; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; margin-top: 48px; }
.form-wrap { background: var(--bg); border-radius: 8px; padding: 40px; border: 1px solid var(--border); }
.form-wrap h3 { font-family: var(--font-serif); font-size: 24px; color: var(--primary-strong); margin-bottom: 8px; }
.form-wrap .form-tip { font-size: 13px; color: var(--text-muted); margin-bottom: 32px; }
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--text); margin-bottom: 8px; }
.form-group label .required { color: var(--accent-2); margin-left: 2px; }
.form-group input[type="text"], .form-group input[type="tel"], .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; font-size: 14px; color: var(--text); transition: border-color .3s ease, box-shadow .3s ease; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(126, 150, 134, .12); }
.form-group textarea { resize: vertical; min-height: 88px; }
.form-submit { margin-top: 12px; }
.form-submit .btn-primary { width: 100%; }
.form-success, .form-error { display: none; margin-top: 16px; padding: 16px 20px; border-radius: 6px; font-size: 14px; }
.form-success { background: rgba(126, 150, 134, .12); border: 1px solid var(--accent); color: var(--primary-strong); }
.form-error { background: rgba(176, 92, 76, .1); border: 1px solid #B05C4C; color: #8A3A2C; }
.contact-info-wrap { display: flex; flex-direction: column; justify-content: space-between; }
.contact-info-list { margin-bottom: 32px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid var(--border); }
.contact-info-item:first-child { padding-top: 0; }
.contact-info-item .icon { width: 20px; height: 20px; flex-shrink: 0; margin-top: 3px; }
.contact-info-item .icon svg { width: 100%; height: 100%; stroke: var(--accent); fill: none; stroke-width: 1.8; }
.contact-info-item .info-label { font-size: 13px; color: var(--text-muted); }
.contact-info-item .info-value { font-size: 15px; font-weight: 500; color: var(--text); }
.contact-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; padding: 8px 18px; border: 1px solid var(--accent); border-radius: 24px; font-size: 13px; color: var(--accent); background: rgba(126, 150, 134, .06); letter-spacing: 1px; }

.news { padding: 100px 0; background: var(--bg); }
.news-ribbon { background: linear-gradient(135deg, rgba(51, 42, 36, .85), rgba(51, 42, 36, .7)), url("/assets/images/backpic/back-2.jpg") center / cover no-repeat; border-radius: 8px; padding: 32px 40px; color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.news-ribbon p { font-family: var(--font-serif); font-size: 20px; font-weight: 600; letter-spacing: 1px; }
.news-ribbon .btn-tea { background: var(--accent-2); color: var(--primary-strong); border: none; padding: 10px 24px; border-radius: 6px; font-size: 14px; font-weight: 500; cursor: pointer; transition: background .3s; display: inline-flex; align-items: center; min-height: 44px; }
.news-ribbon .btn-tea:hover { background: #9A7B5A; }
.news-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: start; }
.news-list { border-top: 1px solid var(--border); }
.news-item { display: flex; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--border); transition: background .3s ease; }
.news-item:hover { background: rgba(126, 150, 134, .03); padding-left: 12px; }
.news-item .date { font-size: 14px; color: var(--text-muted); min-width: 90px; font-variant-numeric: tabular-nums; line-height: 1.6; }
.news-item h4 { font-family: var(--font-serif); font-size: 17px; font-weight: 600; color: var(--primary-strong); margin-bottom: 8px; }
.news-item p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.news-item a span { color: var(--accent); font-size: 13px; display: inline-block; margin-top: 8px; }
.news-side { position: sticky; top: 96px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 28px; }
.news-side h4 { font-family: var(--font-serif); font-size: 17px; font-weight: 700; color: var(--primary-strong); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.news-side ul { margin-bottom: 28px; }
.news-side li { padding: 6px 0; font-size: 14px; color: var(--text); }
.news-side li::before { content: "·"; color: var(--accent-2); font-weight: 700; margin-right: 8px; }
.news-side .tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.news-side .tag-list span { display: inline-block; padding: 6px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; font-size: 12px; color: var(--text-muted); transition: border-color .3s, color .3s; cursor: default; }
.news-side .tag-list span:hover { border-color: var(--accent); color: var(--accent); }

.footer { background: var(--primary-strong); color: #EAE3DA; padding-top: 72px; }
.footer-top { border-top: 2px solid var(--accent-2); padding-top: 48px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand h4 { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.footer-brand h4::after { content: ""; width: 8px; height: 8px; background: var(--accent-2); border-radius: 50%; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #C4B8AC; margin-bottom: 24px; max-width: 300px; }
.footer-contact { font-size: 14px; line-height: 2; color: #EAE3DA; }
.footer-contact span { color: #C4B8AC; margin-right: 8px; font-size: 13px; }
.footer-col h5 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-col ul li { padding: 6px 0; }
.footer-col a { font-size: 14px; color: #C4B8AC; transition: color .3s; }
.footer-col a:hover { color: var(--accent); }
.footer-visit { font-size: 14px; color: #C4B8AC; line-height: 2; }
.footer-visit .hours { margin-top: 16px; font-family: var(--font-serif); color: #EAE3DA; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; font-size: 13px; color: #C4B8AC; text-align: center; letter-spacing: 1px; }

@media (max-width: 1024px) {
  .hero { padding: 130px 0 80px; }
  .hero h1 { font-size: 34px; }
  .nav-links { gap: 20px; }
  .service-grid { gap: 24px; }
  .service-card:nth-child(2), .service-card:nth-child(3) { transform: translateY(12px); }
  .service-card:nth-child(2):hover, .service-card:nth-child(3):hover { transform: translateY(10px); }
  .contact-grid { gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 100px 0 60px; }
  .hero h1 { font-size: 28px; line-height: 1.4; }
  .hero-sub { font-size: 14px; }
  .hero-meta { letter-spacing: 1px; font-size: 12px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-item { padding: 32px 12px; border-left: none; border-bottom: 1px solid var(--border); }
  .metric-item:nth-child(odd) { border-right: 1px solid var(--border); }
  .metric-num { font-size: 30px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card:nth-child(2), .service-card:nth-child(3) { transform: none; }
  .service-card:nth-child(2):hover, .service-card:nth-child(3):hover { transform: translateY(-2px); }
  .compare-grid { grid-template-columns: 1fr; }
  .compare-col.premium { border-left: none; border-top: 2px solid var(--accent); }
  .compare-col.premium .premium-badge { top: -12px; left: 16px; transform: none; border-radius: 4px; }
  .compare-col.premium .premium-badge::after { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-wrap { padding: 24px; }
  .news-layout { grid-template-columns: 1fr; }
  .news-side { position: static; margin-top: 40px; }
  .news-ribbon { flex-direction: column; align-items: flex-start; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-top { padding-top: 32px; }
  .section-title { font-size: 24px; }
  .accordion-title { font-size: 16px; padding: 20px 0; }
}