/* roulang page: index */
:root {
  --mb-primary: #0D3B3A;
  --mb-primary-light: #167A72;
  --mb-primary-dark: #0A2E2D;
  --mb-gold: #C8A96A;
  --mb-gold-light: #E3CFA3;
  --mb-bg: #F6F4EE;
  --mb-surface: #FFFFFF;
  --mb-line: #E3DFD3;
  --mb-body: #26312F;
  --mb-muted: #5D6B67;
  --mb-success: #2A9D7F;
  --mb-error: #C2554F;
  --brand-gradient: linear-gradient(135deg, #0A2E2D, #0D3B3A 55%, #167A72);
  --gold-gradient: linear-gradient(135deg, #C8A96A, #E3CFA3);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 2px 12px rgba(10,46,45,.06);
  --shadow-hover: 0 8px 24px rgba(10,46,45,.10);
  --font-head: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", Arial, sans-serif;
  --space-section: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.8; color: var(--mb-body); background: var(--mb-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; background: var(--brand-gradient); }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.h2 { font-family: var(--font-head); font-size: clamp(24px, 2.6vw, 36px); font-weight: 700; line-height: 1.35; color: var(--mb-primary-dark); }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .08em; color: var(--mb-gold); background: rgba(200,169,106,.12); padding: 4px 16px; border-radius: 999px; margin-bottom: 16px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; gap: 24px; flex-wrap: wrap; }
.section-sub { color: var(--mb-muted); font-size: 15px; max-width: 560px; margin-top: 8px; }
.see-all { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--mb-primary); padding: 10px 22px; border: 1px solid var(--mb-line); border-radius: 999px; transition: all .25s ease; background: var(--mb-surface); }
.see-all:hover { border-color: var(--mb-primary); background: var(--mb-primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.see-all .arrow { transition: transform .25s; }
.see-all:hover .arrow { transform: translateX(4px); }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--mb-primary-dark); color: #fff; box-shadow: 0 4px 24px rgba(0,0,0,.16); }
.header-top { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { font-family: var(--font-head); font-size: 22px; font-weight: 700; letter-spacing: .04em; color: #fff; line-height: 1.2; }
.brand-badge { background: var(--gold-gradient); color: var(--mb-primary-dark); font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 999px; letter-spacing: .06em; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-wrap { position: relative; }
.search-input { width: 240px; height: 40px; border-radius: 999px; border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.12); padding: 0 16px 0 42px; color: #fff; font-size: 14px; outline: none; transition: all .25s ease; }
.search-input::placeholder { color: rgba(255,255,255,.68); }
.search-input:focus { background: rgba(255,255,255,.2); border-color: var(--mb-gold); box-shadow: 0 0 0 3px rgba(200,169,106,.2); }
.search-icon { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; }
.search-icon path { fill: transparent; stroke: rgba(255,255,255,.85); stroke-width: 2; }
.header-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--mb-gold); color: var(--mb-primary-dark); font-weight: 700; font-size: 14px; padding: 10px 24px; border-radius: 999px; transition: all .25s ease; }
.header-cta:hover { background: var(--gold-gradient); transform: translateY(-1px); }
.header-cta:active { transform: translateY(0); }
.header-nav { border-top: 1px solid rgba(255,255,255,.08); }
.nav-list { display: flex; align-items: center; gap: 10px; overflow-x: auto; scrollbar-width: none; padding: 10px 0; }
.nav-list::-webkit-scrollbar { display: none; }
.nav-link { display: inline-flex; align-items: center; white-space: nowrap; font-size: 15px; font-weight: 500; padding: 8px 22px; border-radius: 999px; border: 1px solid rgba(255,255,255,.22); color: rgba(255,255,255,.88); transition: all .22s ease; }
.nav-link:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.4); }
.nav-link.active { background: var(--mb-gold); color: var(--mb-primary-dark); border-color: var(--mb-gold); font-weight: 700; }
.menu-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid rgba(255,255,255,.2); background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: #fff; margin: 3px 0; border-radius: 2px; }

/* ===== Hero ===== */
.hero { background: var(--mb-primary-dark); color: #fff; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(200,169,106,.12) 1px, transparent 1px); background-size: 28px 28px; pointer-events: none; }
.hero .container { display: grid; grid-template-columns: 55% 45%; gap: 40px; align-items: center; padding-top: 80px; padding-bottom: 80px; position: relative; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(200,169,106,.15); border: 1px solid rgba(200,169,106,.35); color: var(--mb-gold-light); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px; margin-bottom: 20px; letter-spacing: .05em; }
.hero h1 { font-family: var(--font-head); font-size: clamp(28px, 3.6vw, 48px); font-weight: 700; line-height: 1.3; margin-bottom: 20px; color: #fff; }
.hero-sub { font-size: 16px; line-height: 1.85; color: rgba(255,255,255,.82); max-width: 520px; margin-bottom: 32px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 12px 32px; border-radius: 999px; background: var(--mb-gold); color: var(--mb-primary-dark); font-weight: 700; font-size: 15px; border: none; cursor: pointer; transition: all .25s ease; }
.btn-primary:hover { background: var(--gold-gradient); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200,169,106,.25); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 12px 32px; border-radius: 999px; background: transparent; color: #fff; font-weight: 600; font-size: 15px; border: 1px solid rgba(255,255,255,.6); cursor: pointer; transition: all .25s ease; }
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: #fff; transform: translateY(-2px); }
.btn-ghost:active { transform: translateY(0); }
.hero-divider { height: 1px; background: rgba(200,169,106,.25); margin-bottom: 24px; max-width: 420px; }
.hero-data { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-data-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.85); }
.hero-data-item .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mb-gold); flex-shrink: 0; }
.hero-data-item strong { font-family: var(--font-num); font-weight: 800; font-size: 16px; color: #fff; font-feature-settings: "tnum"; }
.hero-visual { border-radius: var(--radius-lg); overflow: hidden; position: relative; min-height: 340px; background: var(--brand-gradient); box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; opacity: .85; }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,46,45,0) 40%, rgba(10,46,45,.28)); }
.hero-ring { position: absolute; top: 24px; right: 24px; width: 80px; height: 80px; border-radius: 50%; border: 1px solid rgba(200,169,106,.5); z-index: 2; }
.hero-ring::after { content: ""; position: absolute; top: 12px; right: 12px; width: 54px; height: 54px; border-radius: 50%; border: 1px solid rgba(200,169,106,.3); }
.hero-watermark { position: absolute; bottom: 24px; left: 24px; z-index: 2; font-family: var(--font-head); font-size: 18px; font-weight: 700; color: rgba(255,255,255,.9); letter-spacing: .06em; }

/* ===== Services ===== */
.services-section { background: var(--mb-bg); padding: var(--space-section) 0; }
.services-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.service-card { background: var(--mb-surface); border-radius: var(--radius-lg); padding: 32px; border: 1px solid transparent; box-shadow: var(--shadow-card); transition: all .3s ease; }
.service-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: rgba(200,169,106,.5); }
.service-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--mb-primary); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; transition: all .3s ease; }
.service-icon svg { width: 22px; height: 22px; fill: none; stroke: var(--mb-gold); stroke-width: 1.8; }
.service-card:hover .service-icon { background: var(--gold-gradient); }
.service-card:hover .service-icon svg { stroke: var(--mb-primary-dark); }
.service-card h3 { font-family: var(--font-head); font-size: 20px; font-weight: 600; color: var(--mb-primary-dark); margin-bottom: 10px; }
.service-card p { color: var(--mb-muted); font-size: 14px; line-height: 1.8; margin-bottom: 16px; }
.service-link { font-size: 14px; font-weight: 600; color: var(--mb-primary); display: inline-flex; align-items: center; gap: 6px; transition: gap .25s; }
.service-link:hover { gap: 10px; color: var(--mb-primary-light); }

/* ===== Stats ===== */
.stats-section { background: var(--mb-primary-dark); padding: 64px 0; position: relative; overflow: hidden; }
.stats-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(rgba(200,169,106,.08) 1px, transparent 1px); background-size: 24px 24px; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; position: relative; }
.stat-item { text-align: center; padding: 16px 8px; position: relative; }
.stat-item:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 20%; height: 60%; width: 1px; background: rgba(200,169,106,.2); }
.stat-num { font-family: var(--font-num); font-size: clamp(32px, 4vw, 52px); font-weight: 800; color: var(--mb-gold); font-feature-settings: "tnum"; line-height: 1.2; }
.stat-num .unit { font-size: .5em; font-weight: 700; margin-left: 2px; color: var(--mb-gold-light); }
.stat-label { color: rgba(255,255,255,.75); font-size: 14px; margin-top: 8px; position: relative; }
.stat-label::before { content: ""; display: block; width: 28px; height: 1px; background: rgba(200,169,106,.5); margin: 10px auto 12px; }

/* ===== Cases ===== */
.cases-section { background: var(--mb-bg); padding: var(--space-section) 0; }
.case-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 64px; }
.case-feature:nth-child(even) .case-img { order: 2; }
.case-img { border-radius: var(--radius-lg); overflow: hidden; position: relative; aspect-ratio: 4/3; box-shadow: var(--shadow-card); }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-feature:hover .case-img img { transform: scale(1.03); }
.case-body .case-tag { display: inline-block; background: rgba(200,169,106,.15); color: var(--mb-gold); font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 999px; margin-bottom: 14px; border: 1px solid rgba(200,169,106,.3); }
.case-body h3 { font-family: var(--font-head); font-size: 22px; font-weight: 700; color: var(--mb-primary-dark); margin-bottom: 12px; line-height: 1.4; }
.case-body p { color: var(--mb-muted); font-size: 15px; line-height: 1.85; margin-bottom: 20px; }
.case-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--mb-primary); font-size: 15px; transition: gap .25s; }
.case-link:hover { gap: 10px; color: var(--mb-primary-light); }
.case-subrows { border-top: 1px solid var(--mb-line); }
.case-subrow { display: grid; grid-template-columns: 120px 1fr auto; align-items: center; gap: 24px; padding: 20px 8px; border-bottom: 1px solid var(--mb-line); transition: background .25s; }
.case-subrow:hover { background: rgba(255,255,255,.8); }
.case-subrow time { font-family: var(--font-num); color: var(--mb-muted); font-size: 14px; font-feature-settings: "tnum"; }
.case-subrow h4 { font-size: 16px; font-weight: 600; color: var(--mb-primary-dark); }
.case-subrow a { color: var(--mb-primary); font-size: 14px; font-weight: 600; }
.case-subrow a:hover { text-decoration: underline; }

/* ===== News ===== */
.news-section { background: var(--mb-surface); padding: var(--space-section) 0; }
.news-feature { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; background: var(--mb-bg); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 40px; }
.news-feature-thumb { position: relative; min-height: 260px; }
.news-feature-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-feature-body { padding: 36px; display: flex; flex-direction: column; justify-content: center; }
.news-cat { font-size: 13px; font-weight: 600; color: var(--mb-gold); background: rgba(200,169,106,.12); padding: 3px 12px; border-radius: 999px; display: inline-block; align-self: flex-start; margin-bottom: 14px; }
.news-feature-body h3 { font-family: var(--font-head); font-size: 24px; font-weight: 700; color: var(--mb-primary-dark); margin-bottom: 12px; line-height: 1.4; }
.news-feature-body p { color: var(--mb-muted); font-size: 15px; margin-bottom: 18px; }
.news-meta { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--mb-muted); }
.news-meta time { font-family: var(--font-num); font-feature-settings: "tnum"; }
.news-meta a { font-weight: 600; color: var(--mb-primary); }
.news-list { display: flex; flex-direction: column; }
.news-row { display: grid; grid-template-columns: 140px 90px 1fr auto; gap: 20px; align-items: center; padding: 20px 8px; border-bottom: 1px solid var(--mb-line); transition: background .2s; }
.news-row:hover { background: var(--mb-bg); border-radius: var(--radius-sm); }
.news-row time { font-family: var(--font-num); color: var(--mb-muted); font-size: 14px; font-feature-settings: "tnum"; }
.news-row .news-summary { color: var(--mb-muted); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 260px; }
.news-row .news-link { font-size: 14px; font-weight: 600; color: var(--mb-primary); }
.news-empty { border: 2px dashed var(--mb-line); border-radius: var(--radius-lg); background: var(--mb-bg); padding: 60px 20px; text-align: center; color: var(--mb-muted); font-size: 15px; }
.news-empty svg { width: 40px; height: 40px; margin-bottom: 12px; stroke: var(--mb-muted); fill: none; stroke-width: 1.5; }

/* ===== Solutions ===== */
.solutions-section { background: var(--mb-primary-dark); padding: var(--space-section) 0; position: relative; overflow: hidden; }
.solutions-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(rgba(200,169,106,.06) 1px, transparent 1px); background-size: 32px 32px; }
.solutions-section .section-head .h2 { color: #fff; }
.solutions-section .section-sub { color: rgba(255,255,255,.65); }
.solution-row { display: grid; grid-template-columns: 80px 1fr auto; gap: 24px; align-items: center; padding: 36px 16px; border-bottom: 1px solid rgba(255,255,255,.1); transition: background .25s; position: relative; }
.solution-row:first-child { border-top: 1px solid rgba(255,255,255,.1); }
.solution-row:hover { background: rgba(255,255,255,.05); }
.solution-num { font-family: var(--font-num); font-size: 42px; font-weight: 800; color: var(--mb-gold); font-feature-settings: "tnum"; }
.solution-body h3 { font-family: var(--font-head); font-size: 20px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.solution-body p { color: rgba(255,255,255,.7); font-size: 14px; line-height: 1.75; }
.solution-arrow { width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; transition: all .25s ease; }
.solution-row:hover .solution-arrow { background: var(--mb-gold); border-color: var(--mb-gold); color: var(--mb-primary-dark); transform: translateX(4px); }

/* ===== FAQ ===== */
.faq-section { background: var(--mb-bg); padding: var(--space-section) 0; }
.faq-wrap { max-width: 880px; margin: 0 auto; }
.faq-item { background: var(--mb-surface); border-radius: var(--radius-md); margin-bottom: 16px; box-shadow: var(--shadow-card); overflow: hidden; }
.faq-item summary { list-style: none; display: flex; align-items: center; gap: 16px; padding: 22px 28px; cursor: pointer; font-weight: 600; color: var(--mb-primary-dark); font-size: 16px; transition: background .2s; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: rgba(246,244,238,.6); }
.faq-item .faq-icon { width: 20px; height: 20px; border-radius: 6px; background: var(--mb-gold); color: var(--mb-primary-dark); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; flex-shrink: 0; transition: background .2s; }
.faq-item[open] .faq-icon { background: var(--mb-primary); color: var(--mb-gold); }
.faq-item .faq-mark { margin-left: auto; font-size: 22px; color: var(--mb-gold); font-weight: 300; line-height: 1; }
.faq-item[open] .faq-mark { transform: rotate(45deg); }
.faq-answer { padding: 0 28px 24px 64px; color: var(--mb-muted); font-size: 15px; line-height: 1.85; border-left: 2px solid var(--mb-gold); margin: 0 28px 24px 28px; }

/* ===== Contact ===== */
.contact-section { background: var(--mb-surface); padding: var(--space-section) 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.contact-info h2 { margin-bottom: 20px; }
.contact-info p { color: var(--mb-muted); font-size: 15px; margin-bottom: 28px; max-width: 420px; }
.contact-meta { display: flex; flex-direction: column; gap: 18px; }
.contact-meta-item { display: flex; align-items: flex-start; gap: 14px; }
.contact-meta-item .icon { width: 42px; height: 42px; border-radius: 12px; background: rgba(13,59,58,.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-meta-item .icon svg { width: 20px; height: 20px; fill: none; stroke: var(--mb-primary); stroke-width: 1.8; }
.contact-meta-item h4 { font-size: 14px; font-weight: 600; color: var(--mb-primary-dark); margin-bottom: 2px; }
.contact-meta-item p { font-size: 15px; color: var(--mb-body); margin: 0; }
.contact-form { background: var(--mb-bg); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-card); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--mb-primary-dark); margin-bottom: 8px; }
.form-control { width: 100%; background: #fff; border: 1px solid var(--mb-line); border-radius: var(--radius-sm); padding: 12px 16px; font-size: 15px; color: var(--mb-body); outline: none; transition: all .2s ease; }
.form-control:focus { border-color: var(--mb-primary-light); box-shadow: 0 0 0 3px rgba(22,122,114,.12); }
.form-control.is-invalid { border-color: var(--mb-error); }
.form-control.is-invalid:focus { box-shadow: 0 0 0 3px rgba(194,85,79,.1); }
.form-error { color: var(--mb-error); font-size: 13px; margin-top: 6px; display: none; }
.form-control.is-invalid ~ .form-error { display: block; }
textarea.form-control { min-height: 110px; resize: vertical; }
.contact-form .btn-primary { width: 100%; margin-top: 8px; }
.form-note { font-size: 13px; color: var(--mb-muted); text-align: center; margin-top: 14px; }

/* ===== Footer ===== */
.site-footer { background: var(--mb-primary-dark); color: rgba(255,255,255,.78); padding-top: 72px; position: relative; }
.site-footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, transparent, var(--mb-gold), transparent); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 56px; padding-bottom: 48px; }
.footer-brand h3 { font-family: var(--font-head); font-size: 24px; color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.85; color: rgba(255,255,255,.65); max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--mb-gold); margin-bottom: 18px; letter-spacing: .05em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,.68); transition: color .2s; }
.footer-col ul a:hover { color: var(--mb-gold); }
.footer-col .contact-text { font-size: 14px; line-height: 2; color: rgba(255,255,255,.68); }
.footer-divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(200,169,106,.4), transparent); }
.footer-bottom { padding: 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.5); }
.footer-bottom .brand-name { color: rgba(255,255,255,.75); font-weight: 600; }
.footer-bottom .domain { font-family: var(--font-num); font-feature-settings: "tnum"; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; padding-top: 60px; }
  .hero-visual { min-height: 280px; }
  .case-feature { grid-template-columns: 1fr; gap: 24px; }
  .case-feature:nth-child(even) .case-img { order: 0; }
  .news-feature { grid-template-columns: 1fr; }
  .news-feature-thumb { min-height: 200px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .search-wrap { display: none; }
  .header-cta { display: none; }
  .header-cta.mobile-only { display: inline-flex; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 32px; }
  .stat-item:not(:last-child)::after { right: auto; bottom: -16px; top: auto; left: 30%; height: 1px; width: 40%; }
  .news-row { grid-template-columns: 1fr 1fr; gap: 8px 16px; }
  .news-row .news-link { grid-column: 1 / -1; }
  .news-row .news-summary { max-width: 100%; }
  .solution-row { grid-template-columns: 60px 1fr; }
  .solution-arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-subrow { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .header-top { height: 64px; }
  .brand-logo { font-size: 18px; }
  .hero .container { padding-top: 48px; padding-bottom: 48px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; }
  .hero-data { gap: 16px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .contact-form { padding: 24px; }
  .faq-item summary { padding: 18px 16px; }
  .faq-answer { padding-left: 48px; margin: 0 16px 20px 16px; }
  .news-feature-body { padding: 24px; }
  .case-feature { margin-bottom: 40px; }
}

/* roulang page: category1 */
:root{
  --mb-primary:#0D3B3A;
  --mb-primary-light:#167A72;
  --mb-primary-dark:#0A2E2D;
  --mb-gold:#C8A96A;
  --mb-gold-light:#E3CFA3;
  --mb-bg:#F6F4EE;
  --mb-surface:#FFFFFF;
  --mb-line:#E3DFD3;
  --mb-body:#26312F;
  --mb-muted:#5D6B67;
  --mb-success:#2A9D7F;
  --mb-error:#C2554F;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 2px 12px rgba(10,46,45,.06);
  --shadow-hover:0 8px 24px rgba(10,46,45,.10);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;color:var(--mb-body);background:var(--mb-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:16px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--mb-gold);outline-offset:2px;
}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.btn-gold{
  background:var(--mb-gold);color:var(--mb-primary-dark);padding:14px 32px;
  border-radius:999px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;
  font-weight:600;font-size:15px;transition:background .3s,transform .15s;border:1px solid transparent;
}
.btn-gold:hover{background:linear-gradient(135deg,#C8A96A,#E3CFA3)}
.btn-gold:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);
  padding:14px 32px;border-radius:999px;min-height:44px;display:inline-flex;align-items:center;
  justify-content:center;font-weight:500;font-size:15px;transition:background .3s;
}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.site-header{
  position:sticky;top:0;z-index:100;background:var(--mb-primary-dark);
  box-shadow:0 2px 8px rgba(0,0,0,.18);
}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px}
.brand-logo{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:21px;font-weight:700;color:#fff;letter-spacing:.5px;
}
.brand-badge{
  background:var(--mb-gold);color:var(--mb-primary-dark);font-size:12px;
  padding:2px 10px;border-radius:999px;font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:16px}
.search-wrap{
  display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:0 16px;height:38px;
}
.search-icon{stroke:rgba(255,255,255,.8);fill:none;flex-shrink:0}
.search-input{
  background:transparent;border:none;outline:none;color:#fff;width:150px;font-size:14px;
}
.search-input::placeholder{color:rgba(255,255,255,.55)}
.header-cta{
  background:var(--mb-gold);color:var(--mb-primary-dark);font-size:14px;font-weight:600;
  padding:8px 20px;border-radius:999px;height:38px;display:inline-flex;align-items:center;
  transition:background .3s;white-space:nowrap;
}
.header-cta:hover{background:var(--mb-gold-light)}
.header-nav{background:var(--mb-primary-dark);border-top:1px solid rgba(255,255,255,.06)}
.nav-list{
  display:flex;gap:8px;padding:10px 0;overflow-x:auto;scrollbar-width:none;white-space:nowrap;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-link{
  display:inline-block;padding:8px 22px;border-radius:999px;color:rgba(255,255,255,.88);
  font-size:15px;border:1px solid rgba(255,255,255,.34);transition:background .2s,color .2s;
}
.nav-link:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-link.active{background:var(--mb-gold);color:var(--mb-primary-dark);border-color:var(--mb-gold);font-weight:600}
/* Hero */
.cat-hero{
  background:linear-gradient(135deg,#0A2E2D,#0D3B3A 55%,#167A72);
  background-size:cover;background-position:center;position:relative;padding:76px 0 68px;overflow:hidden;
}
.cat-hero::before{
  content:'';position:absolute;inset:0;
  background-image:linear-gradient(rgba(200,169,106,.12) 1px,transparent 1px),
  linear-gradient(90deg,rgba(200,169,106,.12) 1px,transparent 1px);
  background-size:28px 28px;pointer-events:none;
}
.cat-hero::after{
  content:'';position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  border:1px solid rgba(200,169,106,.25);pointer-events:none;
}
.cat-hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:1;
}
.cat-hero-tag{
  display:inline-block;color:var(--mb-gold);font-size:13px;letter-spacing:3px;
  font-weight:600;margin-bottom:12px;text-transform:uppercase;
}
.cat-hero h1{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:clamp(30px,3.6vw,48px);color:#fff;line-height:1.3;margin-bottom:18px;font-weight:700;
}
.cat-hero-sub{
  color:rgba(255,255,255,.82);font-size:16px;line-height:1.85;margin-bottom:30px;max-width:520px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.cat-hero-media{position:relative}
.cat-hero-media img{
  border-radius:var(--radius-lg);box-shadow:0 20px 40px rgba(0,0,0,.35);
  aspect-ratio:4/3;object-fit:cover;width:100%;
}
/* 图文模块 */
.cat-section{padding:88px 0}
.cat-section.alt{background:var(--mb-surface)}
.section-head{margin-bottom:56px;text-align:left}
.section-tag{color:var(--mb-gold);font-size:13px;letter-spacing:3px;font-weight:600}
.section-head h2{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:clamp(26px,2.6vw,38px);color:var(--mb-primary-dark);margin-top:8px;line-height:1.35;
}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:72px;
}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-text{order:2}
.feature-row.reverse .feature-media{order:1}
.feature-text h3{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:26px;color:var(--mb-primary-dark);margin-bottom:14px;line-height:1.4;
}
.feature-text p{color:var(--mb-muted);margin-bottom:16px;line-height:1.85;max-width:520px}
.feature-text .text-link{
  display:inline-block;color:var(--mb-primary-light);font-weight:600;font-size:15px;
  margin-top:6px;transition:color .2s;
}
.feature-text .text-link:hover{color:var(--mb-gold)}
.feature-media img{
  border-radius:var(--radius-lg);aspect-ratio:4/3;object-fit:cover;
  box-shadow:0 10px 28px rgba(10,46,45,.12);width:100%;
}
/* 数据条 */
.metric-bar{background:var(--mb-primary-dark);padding:52px 0}
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;text-align:center}
.metric-item{position:relative;padding:0 16px}
.metric-item:not(:last-child)::after{
  content:'';position:absolute;right:-20px;top:50%;transform:translateY(-50%);
  width:1px;height:52px;background:rgba(200,169,106,.22);
}
.metric-num{
  font-family:"DIN Alternate","Bahnschrift","Segoe UI",Arial,sans-serif;
  font-size:clamp(34px,4vw,52px);font-weight:800;color:var(--mb-gold);
  font-feature-settings:"tnum";line-height:1.1;
}
.metric-label{color:rgba(255,255,255,.72);margin-top:10px;font-size:14px;letter-spacing:.5px}
/* 服务细节 */
.cat-services{padding:88px 0;background:var(--mb-bg)}
.services-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.service-card{
  background:var(--mb-surface);border-radius:var(--radius-lg);padding:36px 32px;
  border:1px solid var(--mb-line);box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s,border-color .3s;
}
.service-card:hover{
  box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--mb-gold);
}
.service-icon{
  width:44px;height:44px;background:var(--mb-primary);border-radius:12px;
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.service-card h3{font-size:19px;color:var(--mb-primary-dark);margin-bottom:10px;font-weight:600}
.service-card p{color:var(--mb-muted);font-size:15px;line-height:1.75}
/* FAQ */
.cat-faq{padding:88px 0;background:var(--mb-surface)}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:var(--mb-bg);border:1px solid var(--mb-line);border-radius:var(--radius-md);
  padding:22px 28px;transition:border-color .2s;
}
.faq-item.open{border-color:var(--mb-gold)}
.faq-q{
  cursor:pointer;font-weight:600;font-size:16px;color:var(--mb-body);
  display:flex;justify-content:space-between;align-items:center;gap:16px;line-height:1.5;
}
.faq-q .faq-icon{
  width:24px;height:24px;background:var(--mb-gold);color:var(--mb-primary-dark);
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;flex-shrink:0;
}
.faq-a{
  display:none;margin-top:16px;padding-left:18px;border-left:2px solid var(--mb-gold);
  color:var(--mb-muted);font-size:15px;line-height:1.85;
}
.faq-item.open .faq-a{display:block}
/* CTA */
.cat-cta{
  background:var(--mb-primary);padding:72px 0;text-align:center;position:relative;overflow:hidden;
}
.cat-cta::before{
  content:'';position:absolute;inset:0;
  background-image:linear-gradient(rgba(200,169,106,.08) 1px,transparent 1px),
  linear-gradient(90deg,rgba(200,169,106,.08) 1px,transparent 1px);
  background-size:28px 28px;pointer-events:none;
}
.cat-cta .container{position:relative;z-index:1}
.cat-cta h2{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:clamp(26px,2.6vw,36px);color:#fff;margin-bottom:12px;
}
.cat-cta p{color:rgba(255,255,255,.72);font-size:16px;margin-bottom:30px}
/* Footer */
.site-footer{background:var(--mb-primary-dark);color:rgba(255,255,255,.82);padding:52px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:56px}
.footer-brand h3{
  font-family:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  font-size:21px;color:#fff;margin-bottom:14px;
}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);line-height:1.85;max-width:560px}
.footer-col h4{color:var(--mb-gold);font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.7);transition:color .2s}
.footer-col a:hover{color:var(--mb-gold)}
.contact-text li{color:rgba(255,255,255,.65)}
.footer-divider{border-top:1px solid rgba(200,169,106,.28);margin:36px 0 22px}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;
  gap:12px;font-size:13px;color:rgba(255,255,255,.5);
}
.brand-name{color:var(--mb-gold);font-weight:600}
.domain{font-family:"DIN Alternate","Bahnschrift","Segoe UI",Arial,sans-serif;letter-spacing:.4px}
/* 响应式 */
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:1fr;gap:36px}
  .cat-hero-media{display:none}
  .feature-row{grid-template-columns:1fr;gap:36px}
  .feature-row.reverse .feature-text{order:1}
  .feature-row.reverse .feature-media{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px}
  .header-top .search-wrap{display:none}
  .header-cta{padding:7px 14px;font-size:13px}
  .nav-list{overflow-x:auto}
  .cat-hero{padding:56px 0 48px}
  .cat-section{padding:56px 0}
  .cat-services{padding:56px 0}
  .cat-faq{padding:56px 0}
  .cat-cta{padding:52px 0}
  .metric-grid{grid-template-columns:1fr;gap:32px}
  .metric-item:not(:last-child)::after{display:none}
  .services-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .feature-text p{max-width:100%}
}
@media (max-width:520px){
  .hero-actions{width:100%}
  .hero-actions .btn-gold,.hero-actions .btn-ghost{width:100%}
  .brand-logo{font-size:18px}
  .brand-badge{font-size:11px}
  .feature-text h3{font-size:22px}
  .service-card{padding:24px 20px}
  .cat-cta p{font-size:15px}
}

/* roulang page: article */
:root {
  --mb-primary: #0D3B3A;
  --mb-primary-light: #167A72;
  --mb-primary-dark: #0A2E2D;
  --mb-gold: #C8A96A;
  --mb-gold-light: #E3CFA3;
  --mb-bg: #F6F4EE;
  --mb-surface: #FFFFFF;
  --mb-line: #E3DFD3;
  --mb-body: #26312F;
  --mb-muted: #5D6B67;
  --mb-success: #2A9D7F;
  --mb-error: #C2554F;
  --font-title: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", Arial, sans-serif;
  --container-w: 1200px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 2px 12px rgba(10,46,45,.06);
  --shadow-hover: 0 8px 24px rgba(10,46,45,.10);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mb-body);
  background: var(--mb-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
ul, ol { list-style-position: inside; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--mb-gold);
  outline-offset: 2px;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--mb-primary-dark);
  color: #FFFFFF;
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #FFFFFF;
}
.brand-badge {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, var(--mb-gold), var(--mb-gold-light));
  color: var(--mb-primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  line-height: 1.4;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  padding: 8px 16px;
  min-width: 260px;
  transition: border-color .25s ease, background .25s ease;
}
.search-wrap:focus-within {
  border-color: var(--mb-gold);
  background: rgba(255,255,255,.18);
}
.search-icon { flex-shrink: 0; stroke: rgba(255,255,255,.8); }
.search-input {
  background: transparent;
  border: none;
  width: 100%;
  color: #FFFFFF;
  font-size: 14px;
}
.search-input::placeholder { color: rgba(255,255,255,.55); }
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .25s ease, transform .15s ease;
}
.header-cta:hover { background: var(--mb-gold-light); }
.header-cta:active { transform: translateY(1px); }
.header-nav {
  border-top: 1px solid rgba(255,255,255,.08);
  background: rgba(0,0,0,.08);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-list::-webkit-scrollbar { display: none; }
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.9);
  font-size: 15px;
  white-space: nowrap;
  transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.nav-link:hover {
  background: rgba(255,255,255,.08);
  color: #FFFFFF;
}
.nav-link.active {
  background: var(--mb-gold);
  border-color: var(--mb-gold);
  color: var(--mb-primary-dark);
  font-weight: 600;
}
.article-main {
  padding: 48px 0 80px;
}
.article-wrapper {
  max-width: 860px;
  margin: 0 auto;
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--mb-muted);
  margin-bottom: 24px;
}
.article-breadcrumb .sep { color: var(--mb-line); }
.article-breadcrumb a:hover { color: var(--mb-primary-light); }
.article-breadcrumb .current {
  color: var(--mb-primary);
  font-weight: 600;
}
.article-detail {
  background: var(--mb-surface);
  border: 1px solid var(--mb-line);
  border-radius: var(--radius-lg);
  padding: 56px 64px;
  box-shadow: var(--shadow-card);
}
.article-title {
  font-family: var(--font-title);
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--mb-primary-dark);
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 14px;
  color: var(--mb-muted);
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--mb-line);
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--mb-body);
  word-break: break-word;
}
.article-content p { margin-bottom: 20px; }
.article-content h2 {
  font-family: var(--font-title);
  font-size: 24px;
  line-height: 1.4;
  color: var(--mb-primary-dark);
  margin: 40px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--mb-line);
}
.article-content h3 {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--mb-primary);
  margin: 32px 0 14px;
}
.article-content h4 {
  font-size: 17px;
  color: var(--mb-primary-dark);
  margin: 24px 0 12px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 20px;
  padding-left: 1.4em;
}
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  background: var(--mb-bg);
  border-left: 4px solid var(--mb-gold);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 12px 12px 0;
  font-family: var(--font-title);
  color: var(--mb-primary-dark);
}
.article-content img {
  margin: 28px auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  background: linear-gradient(135deg, #0A2E2D, #167A72);
}
.article-content a {
  color: var(--mb-primary-light);
  border-bottom: 1px solid rgba(22,122,114,.3);
}
.article-content a:hover { color: var(--mb-primary); }
.article-content code {
  background: var(--mb-bg);
  border: 1px solid var(--mb-line);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: .9em;
}
.article-content pre {
  background: var(--mb-primary-dark);
  color: #E8E4D8;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.7;
}
.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--mb-line);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--mb-bg);
  font-weight: 600;
  color: var(--mb-primary-dark);
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--mb-line);
  margin: 36px 0;
}
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--mb-line);
}
.tag {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  background: var(--mb-bg);
  border: 1px solid var(--mb-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--mb-muted);
  white-space: nowrap;
}
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.pager-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--mb-surface);
  border: 1px solid var(--mb-line);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-size: 15px;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.pager-link:hover {
  border-color: var(--mb-primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.pager-link span {
  font-size: 13px;
  color: var(--mb-muted);
}
.pager-link.next { text-align: right; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .25s ease, color .25s ease, transform .15s ease;
}
.btn-primary {
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--mb-gold), var(--mb-gold-light));
}
.btn-primary:active { transform: translateY(1px); }
.related-section {
  margin-top: 56px;
}
.related-section .section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.related-section h2 {
  font-family: var(--font-title);
  font-size: 28px;
  color: var(--mb-primary-dark);
  position: relative;
  padding-left: 16px;
}
.related-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--mb-gold);
  border-radius: 2px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.related-card {
  background: var(--mb-surface);
  border: 1px solid var(--mb-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--mb-gold);
}
.related-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: linear-gradient(135deg, #0A2E2D, #167A72);
}
.related-body {
  padding: 16px 18px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-body h3 {
  font-size: 16px;
  line-height: 1.5;
  color: var(--mb-body);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-body span {
  font-size: 13px;
  color: var(--mb-muted);
  font-family: var(--font-num);
  font-feature-settings: "tnum";
  margin-top: auto;
}
.back-to-list {
  margin-top: 40px;
  text-align: center;
}
.article-not-found {
  text-align: center;
  padding: 100px 24px;
  background: var(--mb-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--mb-line);
  box-shadow: var(--shadow-card);
}
.article-not-found h1 {
  font-family: var(--font-title);
  font-size: 36px;
  color: var(--mb-primary-dark);
  margin-bottom: 16px;
}
.article-not-found p {
  color: var(--mb-muted);
  margin-bottom: 32px;
}
.site-footer {
  background: var(--mb-primary-dark);
  color: rgba(255,255,255,.82);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
}
.footer-brand h3 {
  font-family: var(--font-title);
  font-size: 22px;
  color: #FFFFFF;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.65);
  max-width: 360px;
}
.footer-col h4 {
  font-size: 16px;
  color: #FFFFFF;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  color: rgba(255,255,255,.7);
  font-size: 14px;
  transition: color .25s ease;
}
.footer-col a:hover { color: var(--mb-gold-light); }
.contact-text li {
  color: rgba(255,255,255,.7);
  font-size: 14px;
}
.footer-divider {
  border-top: 1px solid rgba(200,169,106,.25);
  margin: 40px 0 24px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: rgba(255,255,255,.55);
}
.brand-name { color: var(--mb-gold-light); }
.domain {
  font-family: var(--font-num);
  font-feature-settings: "tnum";
}
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-detail { padding: 40px 36px; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-top { padding: 12px 0; }
  .brand-logo { font-size: 20px; }
  .search-wrap { min-width: 40px; width: 40px; padding: 8px 10px; }
  .search-input { width: 0; padding: 0; }
  .header-cta { padding: 0 16px; font-size: 13px; }
  .article-main { padding: 32px 0 56px; }
  .article-wrapper { max-width: 100%; }
  .article-detail { padding: 28px 20px; border-radius: var(--radius-md); }
  .article-title { font-size: 26px; }
  .article-meta { gap: 8px 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 520px) {
  .header-cta { display: none; }
  .header-actions { gap: 8px; }
  .brand-logo { font-size: 18px; }
  .brand-badge { display: none; }
  .nav-link { height: 34px; padding: 0 16px; font-size: 14px; }
  .article-meta { font-size: 13px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-pager { grid-template-columns: 1fr; }
  .article-detail { padding: 22px 16px; }
  .article-content { font-size: 15px; }
  .article-breadcrumb { font-size: 13px; }
}

/* roulang page: category2 */
:root {
            --mb-primary: #0D3B3A;
            --mb-primary-light: #167A72;
            --mb-primary-dark: #0A2E2D;
            --mb-gold: #C8A96A;
            --mb-gold-light: #E3CFA3;
            --mb-bg: #F6F4EE;
            --mb-surface: #FFFFFF;
            --mb-line: #E3DFD3;
            --mb-body: #26312F;
            --mb-muted: #5D6B67;
            --mb-success: #2A9D7F;
            --mb-error: #C2554F;
            --radius-large: 24px;
            --radius-normal: 16px;
            --radius-small: 12px;
            --shadow-card: 0 2px 12px rgba(10, 46, 45, .06);
            --shadow-hover: 0 8px 24px rgba(10, 46, 45, .10);
            --font-title: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--mb-body);
            background: var(--mb-surface);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
            background: linear-gradient(135deg, #0A2E2D, #167A72);
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            list-style: none;
        }

        input,
        button,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
            text-align: center;
        }

        .btn-primary {
            background: var(--mb-gold);
            color: var(--mb-primary-dark);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--mb-gold), var(--mb-gold-light));
            box-shadow: 0 4px 16px rgba(200, 169, 106, .30);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            background: var(--mb-primary);
            color: #fff;
        }

        .btn-secondary:hover {
            background: var(--mb-primary-light);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, .65);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .08);
        }

        .btn-large {
            min-height: 52px;
            padding: 14px 40px;
            font-size: 16px;
        }

        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--mb-primary-light);
            outline-offset: 3px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--mb-primary-dark);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .18);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 16px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .brand-logo {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
        }

        .brand-badge {
            background: linear-gradient(135deg, var(--mb-gold), var(--mb-gold-light));
            color: var(--mb-primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-icon {
            position: absolute;
            left: 14px;
            stroke: rgba(255, 255, 255, .75);
            fill: none;
            stroke-width: 2;
            pointer-events: none;
        }

        .search-input {
            width: 230px;
            height: 40px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .18);
            background: rgba(255, 255, 255, .12);
            color: #fff;
            padding-left: 40px;
            padding-right: 16px;
            font-size: 14px;
            transition: all .25s ease;
        }

        .search-input::placeholder {
            color: rgba(255, 255, 255, .65);
        }

        .search-input:focus {
            outline: none;
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .35);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 22px;
            border-radius: 999px;
            background: var(--mb-gold);
            color: var(--mb-primary-dark);
            font-size: 14px;
            font-weight: 600;
            transition: all .25s ease;
        }

        .header-cta:hover {
            background: linear-gradient(135deg, var(--mb-gold), var(--mb-gold-light));
        }

        .header-nav {
            background: rgba(255, 255, 255, .04);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            height: 40px;
            padding: 0 20px;
            border-radius: 999px;
            color: rgba(255, 255, 255, .85);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, .16);
            background: transparent;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, .08);
            color: #fff;
        }

        .nav-link.active {
            background: var(--mb-gold);
            color: var(--mb-primary-dark);
            border-color: var(--mb-gold);
            font-weight: 600;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: var(--mb-bg);
            border-bottom: 1px solid var(--mb-line);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            border: 1px solid rgba(200, 169, 106, .18);
            border-radius: 50%;
            top: -140px;
            right: -80px;
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border: 1px solid rgba(200, 169, 106, .12);
            border-radius: 50%;
            bottom: -100px;
            left: 10%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--mb-primary-light);
            letter-spacing: 2px;
            margin-bottom: 20px;
        }

        .hero-tag::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--mb-gold);
            display: inline-block;
        }

        .page-hero h1 {
            font-family: var(--font-title);
            font-size: clamp(28px, 3.6vw, 44px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--mb-primary-dark);
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 16px;
            line-height: 1.85;
            color: var(--mb-muted);
            max-width: 540px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-media {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(10, 46, 45, .10);
            position: relative;
        }

        .hero-media img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: var(--radius-large);
        }

        /* ===== Section Header ===== */
        .section-header {
            margin-bottom: 48px;
        }

        .section-header.center {
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--mb-primary-light);
            letter-spacing: 2px;
            margin-bottom: 12px;
        }

        .section-tag::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--mb-gold);
        }

        .section-header.center .section-tag::after {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--mb-gold);
        }

        .section-header h2 {
            font-family: var(--font-title);
            font-size: clamp(24px, 2.6vw, 36px);
            font-weight: 700;
            color: var(--mb-primary-dark);
            line-height: 1.35;
        }

        .section-header p {
            margin-top: 12px;
            color: var(--mb-muted);
            font-size: 16px;
            max-width: 640px;
        }

        /* ===== Feature Section ===== */
        .feature-section {
            padding: 96px 0;
            background: var(--mb-surface);
        }

        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-row.reverse .feature-image {
            order: 2;
        }

        .feature-row.reverse .feature-text {
            order: 1;
        }

        .feature-image {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .feature-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform .45s ease;
        }

        .feature-image:hover img {
            transform: scale(1.02);
        }

        .feature-number {
            font-family: var(--font-num);
            font-size: 15px;
            font-weight: 700;
            color: var(--mb-gold);
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: block;
        }

        .feature-text h3 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--mb-primary-dark);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .feature-text p {
            color: var(--mb-muted);
            line-height: 1.85;
            margin-bottom: 16px;
            font-size: 15px;
        }

        .feature-text p:last-child {
            margin-bottom: 0;
        }

        /* ===== Data Strip ===== */
        .data-strip {
            background: var(--mb-primary-dark);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .data-strip::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: .12;
            pointer-events: none;
        }

        .data-strip .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
        }

        .data-desc {
            flex: 1;
            min-width: 260px;
            max-width: 540px;
            color: rgba(255, 255, 255, .85);
            font-size: 16px;
            line-height: 1.85;
        }

        .data-items {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .data-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0 40px;
        }

        .data-item:first-child {
            padding-left: 0;
        }

        .data-item:last-child {
            padding-right: 0;
        }

        .data-item + .data-item {
            border-left: 1px solid rgba(200, 169, 106, .22);
        }

        .data-num {
            font-family: var(--font-num);
            font-size: clamp(32px, 4vw, 50px);
            font-weight: 800;
            color: var(--mb-gold);
            line-height: 1.1;
            font-feature-settings: "tnum";
        }

        .data-label {
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            margin-top: 8px;
            letter-spacing: 1px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 96px 0;
            background: var(--mb-bg);
        }

        .faq-list {
            max-width: 880px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--mb-surface);
            border-radius: var(--radius-normal);
            border: 1px solid var(--mb-line);
            overflow: hidden;
            transition: box-shadow .25s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 22px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 16px;
            font-weight: 600;
            color: var(--mb-body);
            list-style: none;
            transition: background .25s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: rgba(246, 244, 238, .6);
        }

        .faq-item summary::before {
            content: "";
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--mb-gold);
        }

        .faq-item summary::after {
            content: "+";
            margin-left: auto;
            font-size: 24px;
            font-weight: 400;
            color: var(--mb-gold);
            transition: transform .3s ease;
        }

        .faq-item[open] summary::after {
            content: "−";
        }

        .faq-content {
            padding: 0 24px 22px 46px;
            color: var(--mb-muted);
            line-height: 1.85;
            font-size: 15px;
            border-left: 2px solid var(--mb-gold);
            margin: 0 24px 22px 24px;
        }

        .faq-content p {
            margin-bottom: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--mb-primary-dark);
            padding: 88px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            border: 1px solid rgba(200, 169, 106, .15);
            border-radius: 50%;
            top: -120px;
            left: -80px;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            border: 1px solid rgba(200, 169, 106, .12);
            border-radius: 50%;
            bottom: -80px;
            right: 8%;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-title);
            font-size: clamp(24px, 2.6vw, 36px);
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, .75);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto 36px;
            line-height: 1.85;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--mb-primary-dark);
            color: rgba(255, 255, 255, .7);
            padding-top: 72px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 56px;
        }

        .footer-brand h3 {
            font-family: var(--font-title);
            font-size: 20px;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 18px;
            font-weight: 600;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            transition: color .25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--mb-gold);
        }

        .contact-text li {
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            line-height: 1.8;
        }

        .footer-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(200, 169, 106, .35), transparent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 24px 0 32px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        .brand-name {
            color: rgba(255, 255, 255, .75);
        }

        .domain {
            font-family: var(--font-num);
            letter-spacing: 1px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .feature-row {
                gap: 40px;
            }

            .data-strip .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 32px;
            }

            .data-desc {
                max-width: 100%;
            }

            .data-items {
                width: 100%;
                justify-content: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 56px 0;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-media img {
                height: 260px;
            }

            .hero-actions {
                flex-wrap: wrap;
            }

            .feature-section {
                padding: 64px 0;
            }

            .feature-row {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 56px;
            }

            .feature-row.reverse .feature-image {
                order: 1;
            }

            .feature-row.reverse .feature-text {
                order: 2;
            }

            .feature-image img {
                height: 240px;
            }

            .data-strip {
                padding: 48px 0;
            }

            .data-items {
                flex-wrap: wrap;
                gap: 24px 0;
            }

            .data-item {
                flex: 1 1 33.33%;
                padding: 0 16px;
            }

            .data-item:first-child {
                padding-left: 0;
            }

            .data-item:last-child {
                padding-right: 0;
            }

            .faq-section {
                padding: 64px 0;
            }

            .cta-section {
                padding: 64px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 40px;
            }

            .search-input {
                width: 160px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-top {
                padding: 12px 0;
            }

            .brand-logo {
                font-size: 17px;
            }

            .search-input {
                display: none;
            }

            .search-icon {
                position: static;
                width: 40px;
                height: 40px;
                display: flex;
                align-items: center;
                justify-content: center;
                border-radius: 50%;
                background: rgba(255, 255, 255, .10);
                padding: 10px;
            }

            .header-cta {
                display: none;
            }

            .nav-list {
                overflow-x: auto;
                scrollbar-width: none;
                gap: 6px;
                padding: 8px 0;
            }

            .nav-list::-webkit-scrollbar {
                display: none;
            }

            .nav-link {
                flex-shrink: 0;
                height: 36px;
                padding: 0 16px;
                font-size: 14px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .data-item {
                flex: 1 1 50%;
                padding: 16px;
            }

            .data-item + .data-item {
                border-left: none;
            }

            .data-item:nth-child(2) {
                border-left: 1px solid rgba(200, 169, 106, .22);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .data-items {
                flex-direction: column;
                align-items: stretch;
            }

            .data-item {
                padding: 12px 0 !important;
                border-left: none !important;
                border-bottom: 1px solid rgba(200, 169, 106, .12);
            }

            .data-item:last-child {
                border-bottom: none;
            }

            .data-link {
                flex-direction: row;
                justify-content: space-between;
            }
        }

/* roulang page: category3 */
:root {
  --mb-primary: #0D3B3A;
  --mb-primary-light: #167A72;
  --mb-primary-dark: #0A2E2D;
  --mb-gold: #C8A96A;
  --mb-gold-light: #E3CFA3;
  --mb-bg: #F6F4EE;
  --mb-surface: #FFFFFF;
  --mb-line: #E3DFD3;
  --mb-body: #26312F;
  --mb-muted: #5D6B67;
  --mb-success: #2A9D7F;
  --mb-error: #C2554F;
  --brand-gradient: linear-gradient(135deg, #0A2E2D, #0D3B3A 55%, #167A72);
  --gold-gradient: linear-gradient(135deg, #C8A96A, #E3CFA3);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 2px 12px rgba(10,46,45,.06);
  --shadow-hover: 0 8px 24px rgba(10,46,45,.10);
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--mb-bg);
  color: var(--mb-body);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
  background: linear-gradient(135deg, #0A2E2D, #167A72);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(200,169,106,.5);
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
}

/* ========== Header ========== */
.site-header {
  background: var(--mb-primary-dark);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0,0,0,.12);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  white-space: nowrap;
}

.brand-badge {
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  letter-spacing: 1px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  color: rgba(255,255,255,.7);
  pointer-events: none;
}

.search-input {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  padding: 9px 18px 9px 36px;
  color: #fff;
  font-size: 14px;
  width: 220px;
  outline: none;
  transition: all .25s ease;
}

.search-input::placeholder {
  color: rgba(255,255,255,.6);
}

.search-input:focus {
  background: rgba(255,255,255,.2);
  border-color: var(--mb-gold);
}

.header-cta {
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  transition: background .25s ease, transform .2s ease;
  white-space: nowrap;
}

.header-cta:hover {
  background: var(--mb-gold-light);
  transform: translateY(-1px);
}

.header-nav {
  border-top: 1px solid rgba(255,255,255,.1);
}

.nav-list {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-link {
  flex: 0 0 auto;
  padding: 8px 22px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.3);
  color: rgba(255,255,255,.9);
  font-size: 15px;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.nav-link:hover {
  background: rgba(255,255,255,.08);
}

.nav-link.active {
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
  border-color: var(--mb-gold);
  font-weight: 600;
}

/* ========== Page Hero ========== */
.page-hero {
  background: var(--brand-gradient);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  opacity: .1;
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,106,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,106,.08) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
  padding: 88px 0 96px;
}

.hero-kicker {
  display: inline-block;
  background: rgba(200,169,106,.15);
  color: var(--mb-gold-light);
  border: 1px solid rgba(200,169,106,.4);
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.page-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,.88);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.18);
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.85);
}

.hero-meta i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mb-gold);
  flex: 0 0 8px;
}

.hero-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.32);
  border: 1px solid rgba(255,255,255,.14);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ========== Section ========== */
.section {
  padding: 96px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.tag-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--mb-gold);
  font-weight: 600;
  letter-spacing: 3px;
  font-size: 13px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.tag-label::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--mb-gold);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--mb-primary-dark);
}

.section-note {
  color: var(--mb-muted);
  max-width: 460px;
  text-align: right;
  font-size: 14px;
  line-height: 1.75;
}

/* ========== Cases ========== */
.cases {
  background: var(--mb-bg);
}

.case-list {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  background: var(--mb-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--mb-line);
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, transform .3s ease;
}

.case-row:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.case-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.case-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.case-kicker {
  display: inline-block;
  color: var(--mb-gold);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.case-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--mb-primary-dark);
  margin-bottom: 16px;
}

.case-text p {
  color: var(--mb-body);
  margin-bottom: 14px;
  line-height: 1.85;
  font-size: 15px;
}

.case-text p:last-child {
  margin-bottom: 0;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.case-tags span {
  background: var(--mb-bg);
  border: 1px solid var(--mb-line);
  color: var(--mb-muted);
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 999px;
  transition: border-color .2s ease, color .2s ease;
}

.case-tags span:hover {
  border-color: var(--mb-gold);
  color: var(--mb-primary);
}

/* ========== Band ========== */
.band {
  background: var(--mb-primary-dark);
  color: #fff;
  padding: 56px 0;
}

.band-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(200,169,106,.3);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
}

.band-icon {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--gold-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mb-primary-dark);
}

.band-text {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,.92);
}

/* ========== Steps ========== */
.steps {
  background: var(--mb-surface);
}

.steps-list {
  border-top: 1px solid var(--mb-line);
}

.step-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 28px;
  padding: 32px 8px;
  border-bottom: 1px solid var(--mb-line);
  transition: background .25s ease;
  align-items: center;
}

.step-row:hover {
  background: rgba(246,244,238,.6);
}

.step-num {
  font-family: var(--font-num);
  font-feature-settings: "tnum";
  font-size: 36px;
  font-weight: 800;
  color: var(--mb-gold);
  letter-spacing: 1px;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--mb-primary-dark);
  margin-bottom: 6px;
}

.step-desc {
  color: var(--mb-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ========== FAQ ========== */
.faq {
  background: var(--mb-bg);
}

.faq-list {
  max-width: 880px;
}

.faq-item {
  background: var(--mb-surface);
  border: 1px solid var(--mb-line);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .25s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  color: var(--mb-body);
  cursor: pointer;
  list-style: none;
  transition: background .2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--mb-gold);
  border-radius: 2px;
  flex: 0 0 10px;
}

.faq-item summary:hover {
  background: #FAF8F2;
}

.faq-mark {
  margin-left: auto;
  color: var(--mb-gold);
  font-size: 22px;
  line-height: 1;
  font-weight: 600;
}

.faq-answer {
  padding: 0 60px 22px 48px;
  border-left: 2px solid var(--mb-gold);
  margin: 0 24px 20px 36px;
  color: var(--mb-muted);
  font-size: 15px;
  line-height: 1.85;
}

.faq-answer p {
  margin-bottom: 8px;
}

/* ========== CTA ========== */
.cta-band {
  background: var(--brand-gradient);
  color: #fff;
  text-align: center;
  padding: 80px 0;
  position: relative;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,106,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,106,.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.cta-band .container {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 700;
  margin-bottom: 14px;
}

.cta-sub {
  color: rgba(255,255,255,.85);
  font-size: 16px;
  margin-bottom: 32px;
}

.btn-primary {
  display: inline-block;
  background: var(--mb-gold);
  color: var(--mb-primary-dark);
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
}

.btn-primary:hover {
  background: var(--gold-gradient);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,169,106,.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ========== Footer ========== */
.site-footer {
  background: var(--mb-primary-dark);
  color: rgba(255,255,255,.85);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand h3 {
  color: #fff;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.footer-brand p {
  color: rgba(255,255,255,.65);
  font-size: 14px;
  line-height: 1.85;
  max-width: 400px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-col a {
  color: rgba(255,255,255,.65);
  transition: color .2s ease;
}

.footer-col a:hover {
  color: var(--mb-gold);
}

.contact-text li {
  color: rgba(255,255,255,.65);
  line-height: 1.8;
}

.footer-divider {
  border-top: 1px solid rgba(200,169,106,.3);
  margin: 40px 0 24px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.55);
}

.brand-name {
  color: var(--mb-gold-light);
  font-weight: 600;
}

.domain {
  font-family: var(--font-num);
  font-feature-settings: "tnum";
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .case-row {
    gap: 36px;
    padding: 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 36px;
  }

  .section-note {
    text-align: left;
  }

  .page-hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 56px 0 64px;
  }

  .hero-visual {
    order: -1;
  }

  .hero-meta {
    gap: 12px 20px;
  }

  .case-row,
  .case-row.reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .case-row .case-visual,
  .case-row.reverse .case-visual {
    order: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .band-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px;
  }

  .step-row {
    grid-template-columns: 56px 1fr;
    gap: 18px;
    padding: 24px 0;
  }

  .step-num {
    font-size: 28px;
  }

  .faq-answer {
    padding: 0 24px 20px 32px;
    margin: 0 20px 16px 28px;
  }

  .cta-band {
    padding: 64px 0;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .search-input {
    display: none;
  }

  .search-wrap {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,.3);
    border-radius: 999px;
    justify-content: center;
  }

  .search-icon {
    position: static;
  }

  .header-cta {
    display: none;
  }

  .brand-logo {
    font-size: 19px;
  }

  .case-row {
    padding: 20px;
  }

  .case-title {
    font-size: 21px;
  }

  .page-title {
    font-size: 28px;
  }

  .page-subtitle {
    font-size: 15px;
  }

  .hero-meta {
    flex-direction: column;
    gap: 10px;
  }

  .steps-list {
    border-top: 0;
  }

  .step-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 22px 0;
  }
}