/* roulang page: index */
:root {
  --dark: #0F1216;
  --dark-2: #171B20;
  --dark-3: #1E242B;
  --paper: #F6F6F4;
  --white: #FFFFFF;
  --lime: #C8F135;
  --lime-dark: #5C6E15;
  --lime-soft: rgba(200,241,53,.08);
  --orange: #E86A3C;
  --text-main: #202428;
  --text-sub: #667078;
  --text-dark-main: #F1F3F5;
  --text-dark-sub: #99A3AD;
  --border: #E4E6E8;
  --border-dark: rgba(255,255,255,.08);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 28px rgba(0,0,0,.12);
  --shadow-dark: 0 8px 24px rgba(0,0,0,.35);
  --container: 1200px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --transition: all .25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.75; color: var(--text-main); background: var(--white); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; background: none; outline: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.text-lime { color: var(--lime); }
.text-orange { color: var(--orange); }
.section { padding: 88px 0; }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; letter-spacing: 2px; color: var(--lime-dark); text-transform: uppercase; margin-bottom: 12px; }
.section-label::before { content: ''; width: 18px; height: 2px; background: var(--lime); display: inline-block; }
.section-title { font-size: 32px; font-weight: 700; line-height: 1.3; color: var(--text-main); margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--text-sub); max-width: 640px; line-height: 1.8; }
.text-center { text-align: center; }
.text-center .section-desc { margin-left: auto; margin-right: auto; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 32px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; line-height: 1.4; cursor: pointer; transition: var(--transition); border: 1px solid transparent; white-space: nowrap; }
.btn-primary { background: var(--lime); color: var(--dark); }
.btn-primary:hover { background: #d4f65f; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(200,241,53,.25); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { background: transparent; color: var(--text-dark-main); border: 1px solid rgba(255,255,255,.3); }
.btn-secondary:hover { border-color: var(--lime); color: var(--lime); transform: translateY(-2px); }
.btn-light { background: var(--dark); color: #fff; }
.btn-light:hover { background: var(--lime-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.18); }
.btn-block { width: 100%; }

/* ===== Scroll Progress ===== */
.scroll-progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: var(--lime); z-index: 9999; transition: width .1s linear; }

/* ===== Header ===== */
body { padding-top: 104px; }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: var(--dark); transition: var(--transition); border-bottom: 1px solid rgba(255,255,255,.05); }
.site-header.stuck { box-shadow: var(--shadow-dark); border-bottom-color: var(--lime); }
.header-brand-bar { background: rgba(0,0,0,.3); border-bottom: 1px solid rgba(255,255,255,.06); }
.header-brand-row { max-width: var(--container); margin: 0 auto; padding: 0 24px; height: 56px; display: flex; align-items: center; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { width: 32px; height: 32px; border-radius: 8px; background: var(--lime); color: var(--dark); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; letter-spacing: -1px; }
.logo-text { font-size: 18px; font-weight: 800; color: var(--text-dark-main); letter-spacing: 1px; white-space: nowrap; }
.logo-text b { color: var(--lime); font-weight: 800; }
.header-trends { display: flex; align-items: center; gap: 8px; margin-left: 8px; overflow: hidden; }
.trend-tag { font-size: 12px; padding: 4px 12px; border-radius: 999px; background: var(--lime-soft); color: var(--lime); border: 1px solid rgba(200,241,53,.2); white-space: nowrap; transition: var(--transition); cursor: pointer; }
.trend-tag:hover { background: rgba(200,241,53,.16); border-color: var(--lime); }
.trend-tag i { color: var(--orange); font-style: normal; margin-right: 4px; }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.search-toggle { width: 40px; height: 40px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-dark-sub); transition: var(--transition); background: rgba(255,255,255,.06); }
.search-toggle:hover { color: var(--lime); background: rgba(255,255,255,.1); }
.search-toggle svg { width: 18px; height: 18px; }
.search-panel { position: absolute; top: 100%; right: 0; left: 0; background: var(--dark-2); padding: 20px 0; border-bottom: 1px solid var(--border-dark); display: none; box-shadow: var(--shadow-dark); }
.search-panel.open { display: block; }
.search-panel-row { max-width: var(--container); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 12px; }
.search-panel input { flex: 1; height: 48px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius-sm); padding: 0 18px; color: var(--text-dark-main); font-size: 15px; transition: var(--transition); }
.search-panel input:focus { border-color: var(--lime); background: rgba(255,255,255,.08); }
.search-panel input::placeholder { color: var(--text-dark-sub); }
.search-panel .btn { height: 48px; padding: 0 28px; }
.header-nav-bar { background: var(--dark); }
.header-nav-row { max-width: var(--container); margin: 0 auto; padding: 0 24px; height: 48px; display: flex; align-items: center; gap: 4px; }
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav-links a { color: var(--text-dark-sub); font-size: 15px; font-weight: 500; padding: 10px 16px; border-radius: var(--radius-sm); transition: var(--transition); white-space: nowrap; }
.nav-links a:hover { color: var(--text-dark-main); background: rgba(255,255,255,.06); }
.nav-links a.active { color: var(--lime); background: var(--lime-soft); }
.nav-contact { background: var(--lime); color: var(--dark) !important; font-weight: 700; border-radius: var(--radius-sm); padding: 8px 20px !important; }
.nav-contact:hover { background: #d4f65f; color: var(--dark) !important; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: var(--radius-sm); align-items: center; justify-content: center; cursor: pointer; color: var(--text-dark-main); }
.nav-toggle svg { width: 22px; height: 22px; }

/* ===== Hero ===== */
.hero { background: linear-gradient(135deg, rgba(15,18,22,.96) 0%, rgba(23,27,32,.92) 60%, rgba(15,18,22,.85) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat; color: var(--text-dark-main); min-height: 560px; display: flex; align-items: center; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -100px; right: -100px; width: 420px; height: 420px; background: radial-gradient(circle, rgba(200,241,53,.22) 0%, transparent 70%); filter: blur(80px); pointer-events: none; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(rgba(15,18,22,0) 0%, rgba(15,18,22,.3) 100%); pointer-events: none; }
.hero .container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; position: relative; z-index: 2; padding-top: 56px; padding-bottom: 56px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(200,241,53,.1); border: 1px solid rgba(200,241,53,.25); color: var(--lime); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px; margin-bottom: 24px; }
.hero-eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--lime); animation: pulse-dot 1.6s infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
.hero h1 { font-size: 46px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; color: var(--text-dark-main); letter-spacing: 1px; }
.hero h1 .highlight { color: var(--lime); }
.hero-sub { font-size: 17px; color: var(--text-dark-sub); line-height: 1.8; margin-bottom: 36px; max-width: 480px; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-trust { display: flex; gap: 28px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-dark-sub); }
.trust-item::before { content: '✓'; color: var(--lime); font-weight: 700; }
.hero-visual { position: relative; }
.hero-visual-frame { border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 24px 60px rgba(0,0,0,.5); position: relative; border: 1px solid rgba(255,255,255,.08); }
.hero-visual-frame img { width: 100%; height: 360px; object-fit: cover; }
.hero-visual-badge { position: absolute; bottom: 20px; left: -20px; background: var(--dark-2); border: 1px solid rgba(200,241,53,.3); border-radius: var(--radius); padding: 14px 20px; display: flex; align-items: center; gap: 12px; box-shadow: var(--shadow-dark); }
.hero-visual-badge .icon { width: 38px; height: 38px; border-radius: 10px; background: var(--lime); color: var(--dark); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; }
.hero-visual-badge .txt b { display: block; color: var(--text-dark-main); font-size: 16px; line-height: 1.3; }
.hero-visual-badge .txt span { font-size: 12px; color: var(--text-dark-sub); }
.hero-scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 2; color: var(--text-dark-sub); font-size: 13px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.hero-scroll::after { content: ''; width: 1px; height: 36px; background: linear-gradient(to bottom, var(--lime) 0%, transparent 100%); animation: scroll-line 1.8s infinite; }
@keyframes scroll-line { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ===== Latest News ===== */
.latest-section { background: var(--paper); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; flex-wrap: wrap; }
.sort-links { display: flex; gap: 4px; background: rgba(0,0,0,.04); padding: 4px; border-radius: 999px; }
.sort-links a { font-size: 13px; color: var(--text-sub); padding: 6px 18px; border-radius: 999px; transition: var(--transition); }
.sort-links a:hover { color: var(--text-main); }
.sort-links a.active { background: var(--white); color: var(--dark); box-shadow: var(--shadow); font-weight: 600; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid rgba(0,0,0,.04); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(200,241,53,.4); }
.news-card-media { position: relative; overflow: hidden; }
.news-card-media img { width: 100%; height: 190px; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card-media img { transform: scale(1.05); }
.news-card-media .hot-badge { position: absolute; top: 12px; right: 12px; background: var(--orange); color: #fff; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 999px; letter-spacing: 1px; }
.news-card-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-card-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.news-card-meta .tag { font-size: 12px; font-weight: 600; color: var(--lime-dark); background: var(--lime-soft); padding: 3px 12px; border-radius: 999px; }
.news-card-meta .date { font-size: 13px; color: var(--text-sub); }
.news-card-title { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; color: var(--text-main); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-title a:hover { color: var(--lime-dark); }
.news-card-excerpt { font-size: 14px; color: var(--text-sub); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 16px; flex: 1; }
.news-card-footer { display: flex; align-items: center; justify-content: space-between; }
.news-card-footer .read-more { font-size: 14px; font-weight: 600; color: var(--dark); transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.news-card-footer .read-more::after { content: '→'; transition: transform .25s ease; }
.news-card-footer .read-more:hover { color: var(--lime-dark); }
.news-card-footer .read-more:hover::after { transform: translateX(4px); }
.empty-state { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 64px 32px; text-align: center; }
.empty-state .empty-icon { width: 64px; height: 64px; border-radius: 50%; background: rgba(0,0,0,.04); margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--text-sub); }
.empty-state p { color: var(--text-sub); font-size: 15px; margin-bottom: 20px; }
.empty-state a { color: var(--lime-dark); font-weight: 600; font-size: 14px; }

/* ===== Services ===== */
.services-section { background: var(--white); }
.services-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.services-intro .section-title { margin-bottom: 14px; }
.services-intro .section-desc { margin-bottom: 28px; }
.services-list { display: flex; flex-direction: column; }
.service-item { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 24px 20px; border-top: 1px solid var(--border); transition: var(--transition); border-radius: 0; }
.service-item:last-child { border-bottom: 1px solid var(--border); }
.service-item:hover { background: var(--lime-soft); border-radius: var(--radius); border-top-color: transparent; }
.service-item .service-num { font-size: 28px; font-weight: 800; color: var(--lime-dark); opacity: .6; font-style: italic; letter-spacing: -1px; line-height: 1.2; }
.service-item h3 { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 6px; }
.service-item p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== Stats ===== */
.stats-section { background: var(--dark); padding: 72px 0; border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -80px; left: 50%; transform: translateX(-50%); width: 600px; height: 300px; background: radial-gradient(ellipse, rgba(200,241,53,.08) 0%, transparent 70%); pointer-events: none; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 16px 8px; }
.stat-num { font-size: 52px; font-weight: 800; color: var(--lime); line-height: 1.1; letter-spacing: -2px; }
.stat-num span { font-size: 20px; margin-left: 4px; }
.stat-label { font-size: 14px; color: var(--text-dark-sub); margin-top: 8px; letter-spacing: 1px; }

/* ===== Cases ===== */
.cases-section { background: var(--paper); }
.cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.case-card { border-radius: var(--radius); overflow: hidden; background: var(--white); box-shadow: var(--shadow); transition: var(--transition); position: relative; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-media { position: relative; overflow: hidden; }
.case-media img { width: 100%; height: 260px; object-fit: cover; transition: transform .45s ease; }
.case-card:hover .case-media img { transform: scale(1.06); }
.case-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,18,22,.75) 0%, rgba(15,18,22,.1) 60%); display: flex; align-items: flex-end; padding: 28px; opacity: 0; transition: var(--transition); }
.case-card:hover .case-overlay { opacity: 1; }
.case-overlay a { color: var(--lime); font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; background: rgba(15,18,22,.8); padding: 10px 22px; border-radius: 999px; border: 1px solid rgba(200,241,53,.3); backdrop-filter: blur(6px); }
.case-overlay a:hover { background: var(--lime); color: var(--dark); }
.case-body { padding: 24px 28px 28px; }
.case-body .tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--orange); background: rgba(232,106,60,.1); padding: 3px 12px; border-radius: 999px; margin-bottom: 12px; }
.case-body h3 { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== Guide ===== */
.guide-section { background: var(--white); }
.guide-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 72px; align-items: start; }
.guide-intro .section-title { margin-bottom: 14px; }
.guide-intro .section-desc { margin-bottom: 28px; }
.guide-intro ul { margin-top: 24px; }
.guide-intro ul li { position: relative; padding-left: 28px; margin-bottom: 12px; font-size: 15px; color: var(--text-sub); }
.guide-intro ul li::before { content: '◆'; position: absolute; left: 0; color: var(--lime-dark); font-size: 12px; top: 3px; }
.guide-steps { display: flex; flex-direction: column; gap: 20px; }
.guide-step { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 22px 24px; background: var(--paper); border-radius: var(--radius); border-left: 3px solid var(--lime); transition: var(--transition); }
.guide-step:hover { background: var(--lime-soft); box-shadow: var(--shadow); }
.guide-step .step-num { width: 48px; height: 48px; border-radius: 12px; background: var(--dark); color: var(--lime); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; }
.guide-step h3 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 4px; }
.guide-step p { font-size: 14px; color: var(--text-sub); line-height: 1.6; margin-bottom: 12px; }
.heat-bar { height: 6px; background: rgba(0,0,0,.06); border-radius: 999px; overflow: hidden; }
.heat-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--lime-dark), var(--lime)); border-radius: 999px; }
.heat-label { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-sub); margin-top: 6px; }
.heat-label b { color: var(--lime-dark); }

/* ===== FAQ ===== */
.faq-section { background: var(--paper); }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-list { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 28px; text-align: left; font-size: 17px; font-weight: 600; color: var(--text-main); cursor: pointer; transition: var(--transition); }
.faq-q:hover { background: rgba(0,0,0,.02); }
.faq-icon { width: 28px; height: 28px; border-radius: 8px; background: var(--paper); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--text-sub); transition: transform .3s ease, background .3s ease, color .3s ease; flex-shrink: 0; line-height: 1; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--lime); color: var(--dark); border-color: var(--lime); }
.faq-a { display: none; padding: 0 28px 24px; font-size: 15px; color: var(--text-sub); line-height: 1.8; }
.faq-item.open .faq-a { display: block; }

/* ===== CTA / Contact ===== */
.cta-section { background: var(--dark); color: var(--text-dark-main); padding: 88px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; bottom: -120px; left: -80px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(200,241,53,.12) 0%, transparent 70%); pointer-events: none; }
.cta-container { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; position: relative; z-index: 2; }
.cta-left .section-title { color: var(--text-dark-main); margin-bottom: 16px; }
.cta-left .section-desc { color: var(--text-dark-sub); margin-bottom: 40px; }
.contact-info-list { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-info-item .ci-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--lime-soft); border: 1px solid rgba(200,241,53,.2); color: var(--lime); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.contact-info-item .ci-label { font-size: 12px; color: var(--text-dark-sub); letter-spacing: 1px; margin-bottom: 2px; }
.contact-info-item .ci-value { font-size: 16px; font-weight: 600; color: var(--text-dark-main); }
.contact-form { background: var(--dark-2); border: 1px solid var(--border-dark); border-radius: var(--radius-lg); padding: 36px 36px 40px; box-shadow: var(--shadow-dark); }
.contact-form h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--text-dark-main); }
.contact-form .form-sub { font-size: 14px; color: var(--text-dark-sub); margin-bottom: 28px; }
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 14px; color: var(--text-dark-sub); margin-bottom: 8px; font-weight: 500; }
.form-group input, .form-group textarea { width: 100%; background: transparent; border: none; border-bottom: 1px solid rgba(255,255,255,.2); padding: 10px 0; color: var(--text-dark-main); font-size: 15px; transition: var(--transition); resize: none; }
.form-group input:focus, .form-group textarea:focus { border-bottom-color: var(--lime); box-shadow: 0 1px 0 var(--lime); }
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,.3); }
.form-success { display: none; margin-top: 16px; padding: 12px 16px; background: rgba(200,241,53,.1); border: 1px solid rgba(200,241,53,.3); border-radius: var(--radius-sm); color: var(--lime); font-size: 14px; text-align: center; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: var(--text-dark-sub); padding-top: 72px; border-top: 1px solid rgba(255,255,255,.05); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 56px; padding-bottom: 48px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: var(--text-dark-sub); max-width: 360px; }
.footer-heading { font-size: 15px; font-weight: 700; color: var(--text-dark-main); margin-bottom: 18px; letter-spacing: 1px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: var(--text-dark-sub); transition: var(--transition); }
.footer-links a:hover { color: var(--lime); padding-left: 4px; }
.footer-info li { display: flex; align-items: center; gap: 10px; font-size: 14px; margin-bottom: 14px; }
.footer-info li i { color: var(--lime); font-style: normal; width: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.06); padding: 20px 0; text-align: center; font-size: 13px; color: var(--text-dark-sub); display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }

/* ===== Back to top ===== */
.back-top { position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px; border-radius: 50%; background: var(--dark-2); border: 1px solid rgba(200,241,53,.4); color: var(--lime); display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; visibility: hidden; transition: var(--transition); z-index: 900; box-shadow: var(--shadow-dark); }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--lime); color: var(--dark); transform: translateY(-3px); }
.back-top svg { width: 20px; height: 20px; }

/* ===== Responsive ===== */
@media (max-width: 1280px) {
  .news-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .hero .container { grid-template-columns: 1fr; gap: 48px; padding-top: 40px; }
  .hero-visual { max-width: 520px; }
  .services-grid, .guide-grid, .cta-container { grid-template-columns: 1fr; gap: 48px; }
  .cases-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .header-trends { display: none !important; }
}
@media (max-width: 768px) {
  body { padding-top: 56px; }
  .hero { min-height: auto; padding: 64px 0; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .section-title { font-size: 28px; }
  .header-nav-bar { position: fixed; top: 56px; left: 0; right: 0; z-index: 999; border-bottom: 1px solid var(--border-dark); background: var(--dark-2); }
  .header-nav-row { height: auto; padding: 12px 16px; flex-direction: column; align-items: flex-start; gap: 0; }
  .nav-links { display: none; flex-direction: column; width: 100%; gap: 0; padding-bottom: 12px; }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); font-size: 16px; }
  .nav-contact { width: 100%; text-align: center; margin-top: 8px; }
  .nav-toggle { display: flex; flex-shrink: 0; }
  .header-brand-row { height: 56px; }
  .logo-text { font-size: 16px; }
  .news-grid { grid-template-columns: 1fr; }
  .guide-step { grid-template-columns: 40px 1fr; padding: 18px 16px; }
  .service-item { grid-template-columns: 44px 1fr; }
  .faq-q { font-size: 15px; padding: 18px 20px; }
  .faq-a { padding: 0 20px 20px; }
  .cta-section { padding: 64px 0; }
  .contact-form { padding: 28px 22px 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .hero-visual-frame img { height: 280px; }
  .back-top { bottom: 20px; right: 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-num { font-size: 40px; }
  .hero-ctas .btn { flex: 1 1 100%; }
  .btn { padding: 12px 22px; }
  .case-media img { height: 200px; }
  .news-card-media img { height: 170px; }
  .search-panel-row { padding: 0 16px; }
  .header-brand-row { padding: 0 16px; gap: 10px; }
  .hero-visual-badge { left: 12px; bottom: 12px; padding: 12px 16px; }
  .footer-bottom { flex-direction: column; gap: 4px; }
}

/* roulang page: category1 */
:root {
            --ink-900: #0F1216;
            --ink-800: #171B20;
            --paper: #F6F6F4;
            --white: #FFFFFF;
            --lime: #C8F135;
            --lime-dark: #5C6E15;
            --orange: #E86A3C;
            --text-main: #202428;
            --text-sub: #667078;
            --text-on-dark: #F1F3F5;
            --text-sub-dark: #99A3AD;
            --border: #E4E7EA;
            --radius-lg: 12px;
            --radius-md: 8px;
            --shadow-1: 0 4px 16px rgba(0, 0, 0, .06);
            --shadow-2: 0 12px 28px rgba(0, 0, 0, .12);
            --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --container: 1200px;
            --gutter: 24px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gutter);
        }

        /* ======== Header ======== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--ink-900);
            border-bottom: 1px solid transparent;
            transition: box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.scrolled {
            background: rgba(15, 18, 22, .96);
            border-bottom-color: var(--lime);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .3);
        }

        .header-brand-bar {
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .header-brand-row {
            max-width: var(--container);
            margin: 0 auto;
            padding: 10px var(--gutter);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--lime);
            color: var(--ink-900);
            font-weight: 900;
            font-size: 17px;
            border-radius: 10px;
            letter-spacing: -1px;
            box-shadow: 0 0 20px rgba(200, 241, 53, .25);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-on-dark);
            letter-spacing: .5px;
            line-height: 1.2;
        }

        .logo-text b {
            color: var(--lime);
            font-weight: 900;
        }

        .header-trends {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .trend-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            color: var(--text-sub-dark);
            background: rgba(255, 255, 255, .06);
            border-radius: 999px;
            padding: 4px 12px;
            transition: color .2s, background .2s;
            cursor: pointer;
        }

        .trend-tag:hover {
            color: var(--lime);
            background: rgba(200, 241, 53, .1);
        }

        .trend-tag i {
            font-style: normal;
            font-size: 11px;
            color: var(--orange);
            font-weight: 700;
            background: rgba(232, 106, 60, .15);
            border-radius: 4px;
            padding: 1px 4px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            color: var(--text-sub-dark);
            transition: background .2s, color .2s;
            cursor: pointer;
        }

        .search-toggle:hover {
            background: rgba(200, 241, 53, .15);
            color: var(--lime);
        }

        .header-nav-bar {
            border-bottom: 1px solid transparent;
            transition: border-color .3s;
        }

        .site-header.scrolled .header-nav-bar {
            border-bottom-color: var(--lime);
        }

        .header-nav-row {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gutter);
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub-dark);
            border-bottom: 2px solid transparent;
            transition: color .2s, border-color .2s;
            white-space: nowrap;
            line-height: 1.4;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--lime);
            border-bottom-color: var(--lime);
        }

        .nav-links a.nav-contact {
            color: var(--text-on-dark);
        }

        .nav-links a.nav-contact:hover {
            color: var(--orange);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            color: var(--text-on-dark);
            background: rgba(255, 255, 255, .08);
            border-radius: 8px;
            cursor: pointer;
            flex-shrink: 0;
            margin: 8px 0;
        }

        .search-panel {
            display: none;
            background: rgba(15, 18, 22, .98);
            border-bottom: 2px solid var(--lime);
            padding: 16px 0;
        }

        .search-panel.open {
            display: block;
        }

        .search-panel-row {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gutter);
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .search-panel-row input {
            flex: 1;
            background: rgba(255, 255, 255, .08);
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            padding: 12px 16px;
            color: var(--text-on-dark);
            font-size: 15px;
            transition: border-color .2s, background .2s;
        }

        .search-panel-row input:focus {
            border-color: var(--lime);
            background: rgba(255, 255, 255, .12);
            outline: none;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: transform .2s, box-shadow .2s, background .2s, color .2s;
            border: 1px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--lime);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--lime);
            color: var(--ink-900);
        }

        .btn-primary:hover {
            background: #d8fa4c;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 241, 53, .25);
        }

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

        .btn-dark {
            background: var(--ink-900);
            color: var(--white);
            border-color: var(--ink-900);
        }

        .btn-dark:hover {
            background: var(--lime-dark);
            color: #fff;
            border-color: var(--lime-dark);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .4);
            color: var(--text-on-dark);
            background: transparent;
        }

        .btn-outline-light:hover {
            border-color: var(--lime);
            color: var(--lime);
        }

        /* ======== Page Hero ======== */
        .page-hero {
            background: var(--ink-900);
            padding: 70px 0 50px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(200, 241, 53, .2);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
            background-size: 34px 34px;
            opacity: .4;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(200, 241, 53, .18) 0%, transparent 70%);
            filter: blur(40px);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub-dark);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-sub-dark);
            transition: color .2s;
        }

        .breadcrumb a:hover {
            color: var(--lime);
        }

        .breadcrumb span {
            opacity: .5;
        }

        .page-hero .breadcrumb {
            color: var(--text-sub-dark);
        }

        .page-hero .breadcrumb a {
            color: var(--text-sub-dark);
        }

        .page-hero .breadcrumb a:hover {
            color: var(--lime);
        }

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 900;
            color: var(--text-on-dark);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .page-hero h1 b {
            color: var(--lime);
            font-weight: 900;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--text-sub-dark);
            max-width: 620px;
            line-height: 1.8;
        }

        .hero-tags {
            margin-top: 22px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-sub-dark);
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 999px;
            padding: 5px 14px;
            transition: color .2s, border-color .2s;
        }

        .hero-tag:hover {
            color: var(--lime);
            border-color: var(--lime);
        }

        .hero-tag i {
            font-style: normal;
            font-size: 11px;
            color: var(--orange);
            font-weight: 700;
        }

        /* ======== Content Layout ======== */
        .content-section {
            padding: 56px 0 30px;
        }

        .content-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 300px;
            gap: 32px;
        }

        .content-main {
            min-width: 0;
        }

        /* ======== Guide Section ======== */
        .guide-section {
            margin-bottom: 48px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 14px;
        }

        .section-head h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-head h2 .eyebrow {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--orange);
            background: rgba(232, 106, 60, .1);
            border-radius: 6px;
            padding: 3px 10px;
            letter-spacing: .5px;
        }

        .section-head .more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-sub);
            transition: color .2s;
            white-space: nowrap;
        }

        .section-head .more-link:hover {
            color: var(--lime-dark);
        }

        .guide-list {
            display: grid;
            gap: 16px;
        }

        .guide-card {
            display: flex;
            align-items: stretch;
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-1);
            transition: box-shadow .25s, border-color .25s, transform .25s;
            border: 1px solid transparent;
            position: relative;
        }

        .guide-card:hover {
            box-shadow: var(--shadow-2);
            transform: translateY(-3px);
            border-color: var(--lime);
        }

        .guide-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--lime);
            transform: scaleY(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

        .guide-card:hover::before {
            transform: scaleY(1);
        }

        .guide-card-thumb {
            width: 220px;
            flex-shrink: 0;
            min-height: 150px;
            position: relative;
            overflow: hidden;
        }

        .guide-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .guide-card:hover .guide-card-thumb img {
            transform: scale(1.04);
        }

        .guide-card-thumb .thumb-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            z-index: 2;
            background: rgba(15, 18, 22, .85);
            color: var(--lime);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .guide-card-body {
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .cat-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            color: var(--lime-dark);
            background: rgba(200, 241, 53, .2);
            border-radius: 999px;
            padding: 2px 10px;
        }

        .guide-card-meta time {
            font-size: 13px;
            color: var(--text-sub);
        }

        .guide-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s;
        }

        .guide-card:hover h3 {
            color: var(--lime-dark);
        }

        .guide-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-card .read-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color .2s, gap .2s;
        }

        .guide-card .read-link:hover {
            color: var(--lime-dark);
            gap: 7px;
        }

        /* ======== Sidebar ======== */
        .content-sidebar {
            min-width: 0;
        }

        .sidebar-widget {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-1);
            margin-bottom: 24px;
        }

        .sidebar-widget h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-widget h4 i {
            font-style: normal;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--orange);
            display: inline-block;
        }

        .hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .hot-tags a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--text-main);
            background: var(--paper);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 5px 12px;
            transition: all .2s;
        }

        .hot-tags a:hover {
            color: var(--lime-dark);
            border-color: var(--lime);
            background: rgba(200, 241, 53, .08);
        }

        .hot-tags a .count {
            font-size: 11px;
            color: var(--text-sub);
            font-weight: 400;
        }

        .sub-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px;
        }

        .sub-links a {
            font-size: 14px;
            color: var(--text-sub);
            padding: 6px 8px;
            border-radius: 6px;
            transition: background .2s, color .2s;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .sub-links a::before {
            content: '';
            width: 4px;
            height: 4px;
            background: var(--lime-dark);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .sub-links a:hover {
            background: var(--paper);
            color: var(--lime-dark);
        }

        .sidebar-widget .widget-img {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
        }

        .sidebar-widget .widget-img img {
            width: 100%;
            height: auto;
            min-height: 120px;
            object-fit: cover;
            transition: transform .4s;
        }

        .sidebar-widget .widget-img:hover img {
            transform: scale(1.03);
        }

        .sidebar-widget .widget-img .img-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 12px;
            background: linear-gradient(to top, rgba(15, 18, 22, .75), transparent);
            color: var(--text-on-dark);
            font-size: 13px;
            font-weight: 600;
        }

        /* ======== CTA Section ======== */
        .cta-section {
            background: var(--ink-900);
            padding: 56px 0;
            margin-top: 20px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            left: -60px;
            bottom: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(232, 106, 60, .15), transparent 70%);
            filter: blur(50px);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-left h2 {
            font-size: 28px;
            color: var(--text-on-dark);
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .cta-left p {
            color: var(--text-sub-dark);
            font-size: 15px;
            max-width: 440px;
        }

        .cta-right {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ======== Footer ======== */
        .site-footer {
            background: var(--ink-900);
            color: var(--text-sub-dark);
            padding-top: 56px;
        }

        .site-footer .container {
            max-width: var(--container);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-heading {
            font-size: 16px;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            font-weight: 700;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-heading::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--lime);
        }

        .footer-links {
            display: grid;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-sub-dark);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a:hover {
            color: var(--lime);
            padding-left: 6px;
        }

        .footer-info {
            display: grid;
            gap: 10px;
        }

        .footer-info li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub-dark);
        }

        .footer-info li i {
            font-style: normal;
            color: var(--lime);
            font-weight: 700;
        }

        .footer-bottom {
            padding: 20px var(--gutter);
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-sub-dark);
            flex-wrap: wrap;
        }

        .footer-bottom span {
            opacity: .8;
        }

        /* ======== Responsive ======== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 38px;
            }

            .content-layout {
                grid-template-columns: 1fr 260px;
                gap: 24px;
            }

            .guide-card-thumb {
                width: 180px;
            }
        }

        @media (max-width: 768px) {
            .header-trends {
                display: none;
            }

            .header-brand-row {
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .header-nav-row {
                padding: 0 16px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--ink-900);
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0;
                border-bottom: 2px solid var(--lime);
                box-shadow: 0 20px 30px rgba(0, 0, 0, .4);
                max-height: calc(100vh - 120px);
                overflow-y: auto;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, .06);
                border-left: 3px solid transparent;
            }

            .nav-links a.active,
            .nav-links a:hover {
                border-left-color: var(--lime);
                background: rgba(200, 241, 53, .06);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .search-panel-row {
                flex-direction: column;
            }

            .search-panel-row .btn {
                width: 100%;
            }

            .page-hero {
                padding: 50px 0 36px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .content-section {
                padding: 40px 0 20px;
            }

            .content-layout {
                grid-template-columns: 1fr;
            }

            .content-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .sidebar-widget:last-child {
                grid-column: span 2;
            }

            .guide-card {
                flex-direction: column;
            }

            .guide-card-thumb {
                width: 100%;
                height: 180px;
                min-height: 0;
            }

            .guide-card-body {
                padding: 16px;
            }

            .cta-section {
                padding: 40px 0;
            }

            .cta-section .container {
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .header-brand-row {
                flex-wrap: nowrap;
            }

            .logo-text {
                font-size: 18px;
            }

            .content-sidebar {
                grid-template-columns: 1fr;
            }

            .sidebar-widget:last-child {
                grid-column: auto;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .guide-card-thumb {
                height: 150px;
            }

            .cta-right .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 360px) {
            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .logo-text {
                font-size: 16px;
            }

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

/* roulang page: article */
:root {
  --ink: #0f1216;
  --charcoal: #171b20;
  --paper: #f6f6f4;
  --white: #ffffff;
  --lime: #c8f135;
  --lime-deep: #5c6e15;
  --orange: #e86a3c;
  --text-main: #202428;
  --text-sub: #667078;
  --text-mut: #99a3ad;
  --text-dark: #f1f3f5;
  --line: #e6e6e2;
  --line-dark: #262c33;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(0, 0, 0, .06);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, .12);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --container: 1200px;
  --read-width: 760px;
  --gutter: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img {
  max-width: 100%;
  display: block;
}

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

button,
input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section[id],
article[id] {
  scroll-margin-top: 110px;
}

#contact {
  scroll-margin-top: 110px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 13px 26px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  min-height: 44px;
}

.btn-primary {
  background: var(--lime);
  color: var(--ink);
}

.btn-primary:hover {
  background: #d8f65f;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(200, 241, 53, .25);
}

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

.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border-color: rgba(255, 255, 255, .35);
}

.btn-outline:hover {
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--ink);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--lime-deep);
  color: var(--white);
  transform: translateY(-2px);
}

.btn:focus-visible,
.search-toggle:focus-visible,
.nav-toggle:focus-visible,
.search-panel input:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ===== header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--ink);
  transition: box-shadow .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 24px rgba(0, 0, 0, .35);
}

.site-header.scrolled .header-nav-bar {
  border-bottom: 1px solid var(--lime);
}

.header-brand-bar {
  background: var(--ink);
}

.header-brand-row {
  max-width: var(--container);
  margin: 0 auto;
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  background: var(--lime);
  color: var(--ink);
  font-weight: 800;
  font-size: 14px;
  line-height: 1;
  padding: 7px 10px;
  border-radius: 8px;
  letter-spacing: 1px;
}

.logo-text {
  color: var(--text-dark);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1px;
  white-space: nowrap;
}

.logo-text b {
  color: var(--lime);
  font-weight: 800;
}

.header-trends {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.trend-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  color: var(--text-mut);
  background: #1d2228;
  padding: 5px 14px;
  border-radius: 999px;
  cursor: default;
  white-space: nowrap;
  transition: color .2s;
}

.trend-tag:hover {
  color: var(--text-dark);
}

.trend-tag i {
  font-style: normal;
  color: var(--orange);
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.search-toggle {
  background: none;
  border: none;
  color: var(--text-mut);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .2s, color .2s;
}

.search-toggle:hover {
  background: #1d2228;
  color: var(--lime);
}

.search-toggle svg {
  width: 20px;
  height: 20px;
}

.header-nav-bar {
  background: var(--ink);
  border-top: 1px solid var(--line-dark);
  transition: border-color .3s;
}

.header-nav-row {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-links {
  display: flex;
  gap: 2px;
  align-items: center;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--text-mut);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
  min-height: 48px;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text-dark);
}

.nav-links a.active {
  color: var(--lime);
  border-bottom-color: var(--lime);
  font-weight: 600;
}

.nav-links .nav-contact {
  color: var(--text-mut);
}

.nav-links .nav-contact:hover {
  color: var(--lime);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-mut);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .2s, color .2s;
}

.nav-toggle:hover {
  background: #1d2228;
  color: var(--lime);
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

.search-panel {
  display: none;
  background: var(--charcoal);
  padding: 16px 0;
  border-top: 1px solid var(--line-dark);
}

.search-panel.open {
  display: block;
}

.search-panel-row {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  gap: 12px;
}

.search-panel input {
  flex: 1;
  background: var(--ink);
  border: 1px solid #333a42;
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  padding: 11px 16px;
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}

.search-panel input:focus {
  border-color: var(--lime);
}

.search-panel input::placeholder {
  color: var(--text-mut);
}

.search-panel .btn {
  background: var(--lime);
  color: var(--ink);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 24px;
  cursor: pointer;
  transition: background .2s, transform .2s;
}

.search-panel .btn:hover {
  background: #d8f65f;
  transform: translateY(-1px);
}

/* ===== article hero ===== */
.article-hero {
  position: relative;
  background: linear-gradient(to top, rgba(15, 18, 22, .92), rgba(23, 27, 32, .78)),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  padding: 84px 0 60px;
}

.article-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(200, 241, 53, .16), transparent 70%);
  pointer-events: none;
}

.article-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mut);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--lime);
  transition: color .2s;
}

.breadcrumb a:hover {
  color: var(--white);
}

.breadcrumb .current {
  color: var(--text-mut);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-dark);
  max-width: 900px;
  margin-bottom: 24px;
  letter-spacing: .5px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  color: var(--text-mut);
  font-size: 14px;
}

.meta-category {
  background: rgba(200, 241, 53, .15);
  color: var(--lime);
  padding: 4px 14px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 13px;
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta svg {
  width: 14px;
  height: 14px;
  opacity: .8;
}

/* ===== article body ===== */
.article-body-section {
  background: var(--paper);
  padding: 64px 0 72px;
}

.article-container {
  max-width: var(--read-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.article-content {
  background: var(--white);
  border-radius: 16px;
  padding: 52px 56px;
  box-shadow: var(--shadow);
}

.article-content p {
  margin: 0 0 1.6em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
}

.article-content h1 {
  font-size: 26px;
  margin: 2em 0 .8em;
  color: var(--text-main);
  line-height: 1.4;
}

.article-content h2 {
  font-size: 24px;
  margin: 2em 0 .8em;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--lime);
  color: var(--text-main);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 20px;
  margin: 1.8em 0 .6em;
  color: var(--text-main);
  line-height: 1.4;
}

.article-content h4 {
  font-size: 17px;
  margin: 1.6em 0 .5em;
  color: var(--text-main);
}

.article-content a {
  color: var(--lime-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .2s;
}

.article-content a:hover {
  color: var(--orange);
}

.article-content img {
  max-width: 92%;
  height: auto;
  border-radius: 10px;
  margin: 1.8em auto;
  display: block;
}

.article-content blockquote {
  margin: 1.6em 0;
  padding: 18px 22px;
  border-left: 4px solid var(--lime);
  background: #f9fae8;
  border-radius: 0 8px 8px 0;
  color: var(--text-sub);
  line-height: 1.8;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.6em;
  padding-left: 24px;
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  margin-bottom: .5em;
  line-height: 1.8;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 14px;
}

.article-content th,
.article-content td {
  padding: 10px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.article-content th {
  background: var(--paper);
  font-weight: 600;
}

.article-content pre {
  background: var(--ink);
  color: var(--text-dark);
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 1.6em 0;
}

.article-content code {
  background: #eff0ed;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}

.article-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2em 0;
}

/* ===== tags ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.tag {
  padding: 6px 16px;
  background: #eceeeb;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-sub);
  transition: background .2s, color .2s, transform .2s;
}

.tag:hover {
  background: var(--lime);
  color: var(--ink);
  transform: translateY(-2px);
}

/* ===== pager ===== */
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 44px;
}

.pager-link {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}

.pager-link:hover {
  border-color: var(--lime);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.pager-link span {
  font-size: 13px;
  color: var(--text-mut);
}

.pager-link strong {
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.5;
}

.pager-next {
  text-align: right;
}

.article-back {
  margin-top: 36px;
  text-align: center;
}

.article-back .btn-outline {
  color: var(--text-main);
  border-color: var(--line);
}

.article-back .btn-outline:hover {
  border-color: var(--lime-deep);
  color: var(--lime-deep);
}

/* ===== empty state ===== */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--text-mut);
  margin: 0 auto 20px;
}

.empty-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}

.empty-desc {
  color: var(--text-sub);
  margin-bottom: 28px;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== related ===== */
.related-posts {
  background: var(--white);
  padding: 76px 0;
}

.related-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.section-heading {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
}

.section-sub {
  color: var(--text-sub);
  margin-top: 6px;
  font-size: 14px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.related-media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.related-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}

.related-card:hover .related-media img {
  transform: scale(1.05);
}

.related-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 18, 22, .85);
  color: var(--lime);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .5px;
  backdrop-filter: blur(4px);
}

.related-body {
  padding: 22px 22px 26px;
}

.related-body h3 {
  font-size: 17px;
  line-height: 1.5;
  margin-bottom: 8px;
}

.related-body h3 a {
  color: var(--text-main);
  transition: color .2s;
}

.related-body h3 a:hover {
  color: var(--lime-deep);
}

.related-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-mut);
  margin-top: 14px;
}

/* ===== CTA ===== */
.article-cta {
  background: var(--ink);
  padding: 68px 0;
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-inner h2 {
  color: var(--text-dark);
  font-size: 28px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.cta-inner p {
  color: var(--text-mut);
  font-size: 15px;
  max-width: 520px;
}

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

/* ===== footer ===== */
.site-footer {
  background: var(--ink);
  color: var(--text-mut);
  padding-top: 64px;
}

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

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 380px;
}

.footer-heading {
  color: var(--text-dark);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links,
.footer-info {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-mut);
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--lime);
}

.footer-info li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.footer-info i {
  font-style: normal;
  color: var(--lime);
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 20px 0;
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  font-size: 13px;
  color: #727c86;
  flex-wrap: wrap;
}

/* ===== responsive ===== */
@media (max-width: 1024px) {
  .related-grid {
    gap: 20px;
  }
  .related-body h3 {
    font-size: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-brand-row {
    padding: 10px 16px;
  }
  .header-trends {
    display: none;
  }
  .header-nav-row {
    padding: 0 16px;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink);
    flex-direction: column;
    padding: 8px 0;
    border-top: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--lime);
    box-shadow: 0 16px 24px rgba(0, 0, 0, .3);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 14px 20px;
    border-left: 3px solid transparent;
    border-bottom: none;
    min-height: 48px;
    font-size: 15px;
  }
  .nav-links a.active {
    border-left-color: var(--lime);
    border-bottom-color: transparent;
    color: var(--lime);
  }
  .nav-toggle {
    display: inline-flex;
  }
  .search-panel-row {
    padding: 0 16px;
  }

  .article-hero {
    padding: 56px 0 44px;
  }
  .article-hero h1 {
    font-size: 30px;
  }
  .article-meta {
    gap: 12px;
    font-size: 13px;
  }
  .article-body-section {
    padding: 40px 0 52px;
  }
  .article-content {
    padding: 32px 24px;
    border-radius: 12px;
  }
  .article-pager {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pager-next {
    text-align: left;
  }
  .related-posts {
    padding: 56px 0;
  }
  .section-heading {
    font-size: 26px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .article-cta {
    padding: 52px 0;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 4px;
    text-align: center;
    padding: 20px 16px;
  }
  .breadcrumb .current {
    max-width: 200px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .header-brand-row {
    gap: 8px;
  }
  .logo-text {
    font-size: 17px;
  }
  .logo-mark {
    font-size: 13px;
    padding: 6px 8px;
  }
  .article-hero h1 {
    font-size: 26px;
  }
  .article-content {
    padding: 24px 18px;
  }
  .article-content p {
    font-size: 15px;
  }
  .article-content h2 {
    font-size: 21px;
  }
  .article-content img {
    max-width: 100%;
  }
  .related-body h3 {
    font-size: 16px;
  }
  .cta-inner h2 {
    font-size: 24px;
  }
}

/* roulang page: category2 */
:root {
            --ink: #0F1216;
            --charcoal: #171B20;
            --paper: #F6F6F4;
            --white: #FFFFFF;
            --lime: #C8F135;
            --lime-deep: #5C6E15;
            --orange: #E86A3C;
            --text-main: #202428;
            --text-sub: #667078;
            --text-dark: #F1F3F5;
            --text-dark-sub: #99A3AD;
            --border: #E3E5E8;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 16px rgba(0, 0, 0, .06);
            --shadow-lg: 0 12px 28px rgba(0, 0, 0, .12);
            --space: 80px;
            --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        textarea {
            font-family: var(--font);
            font-size: 15px;
            color: var(--text-main);
            border: none;
            outline: none;
            background: transparent;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            line-height: 1;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            transition: all .25s ease;
            min-height: 44px;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--lime);
            color: var(--ink);
        }
        .btn-primary:hover {
            background: #d6fa4a;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 241, 53, .25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-dark);
            border-color: rgba(255, 255, 255, .35);
        }
        .btn-outline:hover {
            border-color: var(--lime);
            color: var(--lime);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-dark {
            background: var(--ink);
            color: var(--white);
        }
        .btn-dark:hover {
            background: var(--lime-deep);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .2);
        }
        .btn-dark:active {
            transform: translateY(0);
        }
        :focus-visible {
            outline: 2px solid var(--lime);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.5;
        }
        .badge-lime {
            background: rgba(200, 241, 53, .16);
            color: var(--lime-deep);
        }
        .badge-orange {
            background: rgba(232, 106, 60, .12);
            color: var(--orange);
        }
        .badge-dark {
            background: var(--ink);
            color: var(--lime);
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--ink);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            transition: box-shadow .3s ease, background .3s ease;
        }
        .site-header.is-scrolled {
            background: rgba(15, 18, 22, .96);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .35);
            border-bottom-color: rgba(200, 241, 53, .5);
        }
        .header-brand-bar {
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-brand-row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 10px 24px;
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            background: var(--lime);
            color: var(--ink);
            font-weight: 900;
            font-size: 18px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            letter-spacing: -1px;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .logo-text b {
            color: var(--lime);
            font-weight: 900;
        }
        .header-trends {
            display: flex;
            gap: 8px;
            flex: 1;
            min-width: 0;
            overflow: hidden;
        }
        .trend-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-dark-sub);
            background: rgba(255, 255, 255, .06);
            border-radius: 999px;
            padding: 5px 12px;
            white-space: nowrap;
            border: 1px solid rgba(255, 255, 255, .06);
        }
        .trend-tag i {
            font-style: normal;
            font-size: 11px;
            font-weight: 800;
            background: var(--orange);
            color: var(--white);
            border-radius: 4px;
            padding: 1px 5px;
            line-height: 1.4;
        }
        .trend-tag:nth-child(2) i {
            background: var(--lime);
            color: var(--ink);
        }
        .trend-tag:nth-child(3) i {
            background: #4A9EFF;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dark-sub);
            transition: all .2s ease;
            background: rgba(255, 255, 255, .06);
            border: 1px solid transparent;
        }
        .search-toggle:hover {
            color: var(--lime);
            border-color: rgba(200, 241, 53, .4);
        }
        .search-toggle svg {
            width: 18px;
            height: 18px;
        }
        .header-nav-bar {
            background: transparent;
        }
        .header-nav-row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 52px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark-sub);
            border-radius: var(--radius-sm);
            transition: all .2s ease;
            line-height: 1.4;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            border: 1px solid transparent;
        }
        .nav-links a:hover {
            color: var(--white);
            background: rgba(255, 255, 255, .05);
        }
        .nav-links a.active {
            color: var(--lime);
            background: rgba(200, 241, 53, .08);
            border-color: rgba(200, 241, 53, .18);
        }
        .nav-links a.nav-contact {
            color: var(--text-dark);
            background: rgba(255, 255, 255, .06);
            margin-left: 8px;
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 14px;
        }
        .nav-links a.nav-contact:hover {
            background: var(--lime);
            color: var(--ink);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            color: var(--text-dark);
            background: rgba(255, 255, 255, .06);
        }
        .nav-toggle svg {
            width: 22px;
            height: 22px;
        }
        .search-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            background: var(--charcoal);
            border-top: 1px solid rgba(255, 255, 255, .04);
        }
        .search-panel.open {
            max-height: 120px;
        }
        .search-panel-row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 14px 24px;
            display: flex;
            gap: 12px;
        }
        .search-panel-row input {
            flex: 1;
            background: rgba(255, 255, 255, .06);
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: var(--text-dark);
            min-height: 44px;
        }
        .search-panel-row input::placeholder {
            color: var(--text-dark-sub);
        }
        .search-panel-row input:focus {
            border-color: var(--lime);
            background: rgba(200, 241, 53, .04);
        }
        .search-panel-row .btn {
            min-height: 44px;
            padding: 12px 24px;
        }

        /* ===== Hero ===== */
        .page-hero {
            background: var(--ink);
            background-image: linear-gradient(135deg, rgba(15, 18, 22, .88) 40%, rgba(15, 18, 22, .55)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 180px 0 90px;
            position: relative;
            overflow: hidden;
            color: var(--text-dark);
        }
        .page-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(200, 241, 53, .16) 0%, transparent 68%);
            z-index: 0;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dark-sub);
            margin-bottom: 22px;
        }
        .breadcrumb a {
            color: var(--text-dark-sub);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--lime);
        }
        .breadcrumb i {
            font-style: normal;
            color: rgba(255, 255, 255, .25);
        }
        .page-hero h1 {
            font-size: 46px;
            line-height: 1.3;
            font-weight: 900;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .page-hero h1 span {
            color: var(--lime);
        }
        .page-hero .hero-desc {
            font-size: 17px;
            color: var(--text-dark-sub);
            max-width: 540px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-scroll-line {
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 48px;
            background: linear-gradient(to bottom, var(--lime), transparent);
            opacity: .6;
        }

        /* ===== Section base ===== */
        .section {
            padding: var(--space) 0;
        }
        .section-alt {
            background: var(--paper);
        }
        .section-dark {
            background: var(--ink);
            color: var(--text-dark);
        }
        .section-head {
            margin-bottom: 44px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: .5px;
            position: relative;
        }
        .section-head h2::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 28px;
            background: var(--lime);
            border-radius: 4px;
            margin-right: 12px;
            vertical-align: -4px;
        }
        .section-head .head-desc {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 420px;
        }
        .section-head .head-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--lime-deep);
            border-bottom: 1px solid transparent;
            transition: border-color .2s ease;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }
        .section-head .head-link:hover {
            border-bottom-color: var(--lime-deep);
        }
        .section-dark .section-head h2::before {
            background: var(--orange);
        }
        .section-dark .section-head .head-desc {
            color: var(--text-dark-sub);
        }

        /* ===== Core info ( numbered list ) ===== */
        .core-info-wrap {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 60px;
            align-items: center;
        }
        .core-info-left img {
            border-radius: var(--radius);
            width: 100%;
            height: 380px;
            object-fit: cover;
            box-shadow: var(--shadow-lg);
        }
        .core-info-list {
            display: flex;
            flex-direction: column;
        }
        .core-info-item {
            display: grid;
            grid-template-columns: 68px 1fr;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
            transition: background .25s ease;
            border-radius: 8px;
            padding-left: 12px;
            margin-left: -12px;
            padding-right: 12px;
        }
        .core-info-item:hover {
            background: rgba(200, 241, 53, .08);
        }
        .core-info-item .ci-num {
            font-size: 34px;
            font-weight: 900;
            color: var(--lime-deep);
            line-height: 1.2;
            letter-spacing: -2px;
        }
        .core-info-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .core-info-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== Timeline ===== */
        .timeline-wrap {
            position: relative;
            padding: 20px 0 10px;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--lime) 8%, var(--lime) 92%, transparent);
            transform: translateX(-1px);
        }
        .timeline-month {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 48px 0 20px;
        }
        .timeline-month .month-tag {
            background: var(--lime);
            color: var(--ink);
            font-weight: 800;
            font-size: 15px;
            padding: 8px 26px;
            border-radius: 999px;
            letter-spacing: 1px;
            box-shadow: 0 4px 14px rgba(200, 241, 53, .25);
        }
        .timeline-month:first-child {
            margin-top: 0;
        }
        .timeline-row {
            position: relative;
            width: 50%;
            padding: 12px 40px;
            z-index: 1;
        }
        .timeline-row.left {
            left: 0;
            text-align: right;
            padding-right: 56px;
            padding-left: 0;
        }
        .timeline-row.right {
            left: 50%;
            text-align: left;
            padding-left: 56px;
            padding-right: 0;
        }
        .timeline-dot {
            position: absolute;
            width: 14px;
            height: 14px;
            background: var(--ink);
            border: 3px solid var(--lime);
            border-radius: 50%;
            top: 36px;
            z-index: 3;
        }
        .timeline-row.left .timeline-dot {
            right: -7px;
        }
        .timeline-row.right .timeline-dot {
            left: -7px;
        }
        .timeline-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 26px;
            border: 1px solid transparent;
            transition: all .3s ease;
            text-align: left;
        }
        .timeline-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--lime);
        }
        .timeline-row.left .timeline-card {
            text-align: left;
        }
        .tl-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .tl-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tl-date i {
            font-style: normal;
            width: 8px;
            height: 8px;
            background: var(--orange);
            border-radius: 50%;
            display: inline-block;
        }
        .timeline-card h4 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: .3px;
        }
        .timeline-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .tl-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--lime-deep);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            min-height: 36px;
            transition: gap .2s ease;
        }
        .tl-link:hover {
            gap: 8px;
            color: var(--ink);
        }

        /* ===== Hot rank ===== */
        .hot-rank-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .hot-rank-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            transition: all .3s ease;
            border: 1px solid transparent;
        }
        .hot-rank-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--lime);
        }
        .hot-rank-card .rank-img {
            aspect-ratio: 3/4;
            overflow: hidden;
            position: relative;
        }
        .hot-rank-card .rank-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .hot-rank-card:hover .rank-img img {
            transform: scale(1.05);
        }
        .rank-num {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--ink);
            color: var(--lime);
            font-size: 22px;
            font-weight: 900;
            padding: 4px 12px;
            border-radius: 8px;
            letter-spacing: -1px;
            z-index: 2;
        }
        .rank-num.top1 {
            background: var(--orange);
            color: var(--white);
        }
        .rank-heat {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(15, 18, 22, .75);
            color: var(--lime);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
            z-index: 2;
        }
        .rank-body {
            padding: 20px;
        }
        .rank-body .rank-tag-row {
            display: flex;
            gap: 6px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .rank-body h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .rank-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }
        .rank-progress {
            height: 4px;
            background: var(--border);
            border-radius: 999px;
            margin-top: 12px;
            overflow: hidden;
        }
        .rank-progress span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, var(--lime), var(--orange));
            border-radius: 999px;
        }

        /* ===== Steps ===== */
        .steps-wrap {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 60px;
            align-items: center;
        }
        .steps-left {
            background: var(--ink);
            color: var(--text-dark);
            padding: 40px;
            border-radius: var(--radius);
            position: relative;
            overflow: hidden;
        }
        .steps-left::before {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(200, 241, 53, .15) 0%, transparent 70%);
        }
        .steps-left h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .steps-left p {
            color: var(--text-dark-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .steps-left .btn {
            position: relative;
            z-index: 1;
        }
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .steps-list-item {
            display: grid;
            grid-template-columns: 56px 1fr;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
            transition: background .25s ease;
            border-radius: 8px;
            padding-left: 12px;
            margin-left: -12px;
            padding-right: 12px;
        }
        .steps-list-item:hover {
            background: rgba(200, 241, 53, .08);
        }
        .steps-list-item .step-index {
            width: 44px;
            height: 44px;
            background: var(--ink);
            color: var(--lime);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            line-height: 1;
            transition: transform .2s ease;
        }
        .steps-list-item:hover .step-index {
            transform: scale(1.06);
        }
        .steps-list-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .steps-list-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 4px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            text-align: left;
            min-height: 44px;
            transition: color .2s ease;
        }
        .faq-q:hover {
            color: var(--lime-deep);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--paper);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            line-height: 1;
            transition: transform .3s ease, background .3s ease, border-color .3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--lime);
            border-color: var(--lime);
            color: var(--ink);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-a .faq-a-inner {
            padding: 0 4px 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--ink);
            background-image: linear-gradient(135deg, rgba(15, 18, 22, .92) 30%, rgba(15, 18, 22, .72)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: var(--text-dark);
            padding: var(--space) 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .cta-left h2 span {
            color: var(--lime);
        }
        .cta-left p {
            color: var(--text-dark-sub);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .cta-contact-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }
        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dark-sub);
        }
        .cta-contact-list li i {
            font-style: normal;
            width: 34px;
            height: 34px;
            background: rgba(255, 255, 255, .06);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--lime);
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, .08);
        }
        .cta-form {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            padding: 36px;
            backdrop-filter: blur(6px);
        }
        .cta-form h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .cta-form>p {
            font-size: 14px;
            color: var(--text-dark-sub);
            margin-bottom: 28px;
        }
        .form-field {
            margin-bottom: 22px;
        }
        .form-field input {
            width: 100%;
            border-bottom: 1px solid rgba(255, 255, 255, .2);
            padding: 12px 0;
            color: var(--text-dark);
            transition: border-color .25s ease;
            border-radius: 0;
        }
        .form-field input::placeholder {
            color: rgba(255, 255, 255, .4);
        }
        .form-field input:focus {
            border-bottom-color: var(--lime);
        }
        .form-field textarea {
            width: 100%;
            border-bottom: 1px solid rgba(255, 255, 255, .2);
            padding: 12px 0;
            color: var(--text-dark);
            resize: vertical;
            min-height: 70px;
            line-height: 1.6;
            transition: border-color .25s ease;
            border-radius: 0;
        }
        .form-field textarea::placeholder {
            color: rgba(255, 255, 255, .4);
        }
        .form-field textarea:focus {
            border-bottom-color: var(--lime);
        }
        .cta-form .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--ink);
            color: var(--text-dark-sub);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr;
            gap: 48px;
            padding: 60px 0 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-dark-sub);
            max-width: 320px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-dark-sub);
            transition: color .2s ease, padding-left .2s ease;
            line-height: 1.6;
            min-height: 36px;
            display: inline-flex;
            align-items: center;
        }
        .footer-links a:hover {
            color: var(--lime);
            padding-left: 4px;
        }
        .footer-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-info li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dark-sub);
            line-height: 1.6;
        }
        .footer-info li i {
            font-style: normal;
            width: 28px;
            height: 28px;
            background: rgba(255, 255, 255, .06);
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--lime);
            font-size: 13px;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            text-align: center;
        }
        .footer-bottom span {
            line-height: 1.6;
        }

        /* ===== Responsive ===== */
        @media (max-width:1280px) {
            .hot-rank-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }
        }
        @media (max-width:1024px) {
            .core-info-wrap,
            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .core-info-left img {
                height: 300px;
            }
            .hot-rank-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .timeline-row {
                padding-left: 24px;
                padding-right: 24px;
            }
            .timeline-row.left {
                padding-right: 36px;
            }
            .timeline-row.right {
                padding-left: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }
        @media (max-width:768px) {
            .header-brand-row {
                padding: 10px 16px;
                gap: 12px;
            }
            .header-nav-row {
                padding: 0 16px;
            }
            .header-trends {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: 88px;
                left: 0;
                right: 0;
                background: var(--ink);
                flex-direction: column;
                align-items: stretch;
                padding: 8px 16px 16px;
                transform: translateY(-8px);
                opacity: 0;
                visibility: hidden;
                transition: all .3s ease;
                border-bottom: 1px solid rgba(200, 241, 53, .4);
                box-shadow: 0 16px 32px rgba(0, 0, 0, .5);
                max-height: calc(100vh - 100px);
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                padding: 16px;
                font-size: 16px;
                border-radius: 8px;
                border-bottom: 1px solid rgba(255, 255, 255, .04);
                min-height: 48px;
            }
            .nav-links a.nav-contact {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
                background: var(--lime);
                color: var(--ink);
                border-radius: 8px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .page-hero {
                padding: 140px 0 64px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head h2::before {
                height: 22px;
                vertical-align: -3px;
            }
            .timeline-wrap::before {
                left: 12px;
                transform: none;
            }
            .timeline-month {
                justify-content: flex-start;
                padding-left: 40px;
            }
            .timeline-row,
            .timeline-row.left,
            .timeline-row.right {
                width: 100%;
                left: 0;
                padding: 8px 0 8px 40px;
                text-align: left;
            }
            .timeline-row.left .timeline-dot,
            .timeline-row.right .timeline-dot {
                left: 6px;
                right: auto;
            }
            .timeline-row.left .timeline-card,
            .timeline-row.right .timeline-card {
                text-align: left;
            }
            .core-info-item {
                grid-template-columns: 52px 1fr;
                gap: 14px;
            }
            .core-info-item .ci-num {
                font-size: 28px;
            }
            .hot-rank-grid {
                grid-template-columns: 1fr;
            }
            .steps-list-item {
                grid-template-columns: 44px 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 44px 0 24px;
            }
            .cta-form {
                padding: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
                padding: 16px;
            }
        }
        @media (max-width:520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 29px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .core-info-left img {
                height: 220px;
            }
            .steps-left {
                padding: 28px;
            }
            .cta-left h2 {
                font-size: 26px;
            }
        }