/* roulang page: index */
:root {
    --primary: #1456e6;
    --primary-dark: #0a3fae;
    --primary-light: #eaf0fe;
    --accent: #f77a1f;
    --accent-light: #fff0e3;
    --bg: #f5f7fb;
    --bg-deep: #0d1b3e;
    --text: #17233b;
    --text-weak: #5f6d87;
    --border: #e2e8f3;
    --radius: 18px;
    --radius-sm: 10px;
    --shadow: 0 6px 26px rgba(14, 42, 90, .08);
    --shadow-hover: 0 12px 38px rgba(14, 42, 90, .14);
    --transition: all .25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
.container-x { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-container { max-width: 1200px; }
.section { padding: 84px 0; }
.section-deep { background: var(--bg-deep); }
.section-alt { background: #ffffff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-eyebrow {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--primary-light); color: var(--primary);
    font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 30px;
    letter-spacing: .5px; margin-bottom: 16px;
}
.section-title { font-size: clamp(28px, 4vw, 38px); font-weight: 800; color: var(--text); line-height: 1.3; letter-spacing: -.5px; }
.section-sub { color: var(--text-weak); font-size: 16px; margin-top: 14px; }
.section-line { width: 56px; height: 4px; background: var(--accent); border-radius: 4px; margin: 20px auto 0; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: #ffffff; box-shadow: 0 2px 18px rgba(14,42,90,.07); }
.header-top { padding: 16px 0; }
.brand-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: .3px; }
.brand-logo i { color: var(--primary); font-size: 24px; }
.brand-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.header-search { display: flex; align-items: center; background: var(--bg); border-radius: 40px; padding: 4px 4px 4px 16px; border: 1px solid var(--border); width: 100%; max-width: 300px; }
.header-search input { border: none; background: transparent; outline: none; width: 100%; font-size: 14px; color: var(--text); }
.header-search button { background: var(--primary); border: none; color: #fff; width: 32px; height: 32px; border-radius: 50%; cursor: pointer; flex-shrink: 0; transition: var(--transition); }
.header-search button:hover { background: var(--primary-dark); }
.header-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; font-size: 14px; font-weight: 600; padding: 9px 22px; border-radius: 30px; transition: var(--transition); }
.header-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(20,86,230,.28); }
.nav-tabs-wrap { background: #fff; border-top: 1px solid var(--border); }
.nav-list { display: flex; gap: 4px; overflow-x: auto; padding: 8px 0; -webkit-overflow-scrolling: touch; }
.nav-list::-webkit-scrollbar { display: none; }
.nav-list a { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; padding: 9px 22px; border-radius: 30px; font-size: 14px; font-weight: 500; color: var(--text-weak); transition: var(--transition); }
.nav-list a i { font-size: 13px; }
.nav-list a:hover { color: var(--primary); background: var(--primary-light); }
.nav-list a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(20,86,230,.28); }

/* Hero */
.hero { position: relative; background-size: cover; background-position: center; min-height: 620px; display: flex; align-items: center; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(13,27,62,.92) 0%, rgba(13,27,62,.72) 45%, rgba(20,86,230,.35) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 640px; padding: 80px 0; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.14); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,.25); color: #fff; font-size: 13px; font-weight: 600; padding: 7px 18px; border-radius: 30px; margin-bottom: 24px; }
.hero-badge i { color: var(--accent); }
.hero h1 { color: #fff; font-size: clamp(34px, 5vw, 52px); font-weight: 800; line-height: 1.2; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 span { color: #f7b267; }
.hero p { color: rgba(255,255,255,.88); font-size: 17px; line-height: 1.8; margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--accent); border: none; color: #fff; padding: 14px 32px; border-radius: 30px; font-size: 15px; font-weight: 600; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.hero-actions .btn-primary:hover { background: #e26914; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(247,122,31,.36); }
.hero-actions .btn-outline { background: transparent; border: 1px solid rgba(255,255,255,.55); color: #fff; padding: 14px 32px; border-radius: 30px; font-size: 15px; font-weight: 600; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.hero-actions .btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.hero-stats { position: relative; z-index: 2; margin-top: 48px; padding-top: 34px; border-top: 1px solid rgba(255,255,255,.18); }
.hero-stats .grid-x > div { text-align: left; }
.stat-num { color: #fff; font-size: 30px; font-weight: 800; line-height: 1.2; }
.stat-label { color: rgba(255,255,255,.75); font-size: 13px; margin-top: 4px; }

/* Cards */
.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); transition: var(--transition); }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.feature-card { padding: 36px 30px; border: 1px solid var(--border); }
.feature-icon { width: 58px; height: 58px; background: var(--primary-light); color: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-weak); font-size: 14.5px; line-height: 1.7; }
.feature-card .card-link { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-size: 14px; font-weight: 600; }
.feature-card .card-link:hover { color: var(--primary-dark); gap: 10px; }
.card-accent { background: linear-gradient(140deg, #fff, var(--primary-light)); }
.card-accent .feature-icon { background: #fff; }

/* Category cards */
.cat-card { border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border); }
.cat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
.cat-cover { position: relative; height: 200px; overflow: hidden; }
.cat-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cat-card:hover .cat-cover img { transform: scale(1.05); }
.cat-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(13,27,62,.55), transparent 65%); }
.cat-tag { position: absolute; left: 16px; bottom: 14px; z-index: 2; background: rgba(255,255,255,.9); color: var(--text); font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 30px; }
.cat-body { padding: 26px 24px 30px; }
.cat-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.cat-body p { color: var(--text-weak); font-size: 14.5px; line-height: 1.7; margin-bottom: 18px; }
.cat-btn { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; font-size: 14px; }
.cat-btn i { transition: transform .2s; }
.cat-btn:hover { color: var(--primary-dark); }
.cat-btn:hover i { transform: translateX(4px); }

/* News list */
.news-card { display: flex; gap: 24px; background: #fff; border-radius: var(--radius); padding: 24px; border: 1px solid var(--border); box-shadow: var(--shadow); transition: var(--transition); align-items: center; }
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.news-date { flex-shrink: 0; text-align: center; background: var(--primary-light); border-radius: 12px; padding: 12px 18px; min-width: 76px; }
.news-date .d { display: block; font-size: 26px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.news-date .m { display: block; font-size: 13px; color: var(--text-weak); margin-top: 2px; }
.news-body { flex: 1; min-width: 0; }
.news-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; line-height: 1.45; }
.news-body h3 a:hover { color: var(--primary); }
.news-body p { color: var(--text-weak); font-size: 14.5px; line-height: 1.7; margin-bottom: 10px; }
.news-meta { display: flex; gap: 18px; font-size: 13px; color: var(--text-weak); }
.news-meta span { display: inline-flex; align-items: center; gap: 6px; }
.news-cat { background: var(--accent-light); color: #d25c12; padding: 2px 12px; border-radius: 30px; font-weight: 600; font-size: 12px; }
.news-empty { background: #fff; border: 1px dashed var(--border); border-radius: var(--radius); padding: 50px 30px; text-align: center; color: var(--text-weak); font-size: 15px; }
.news-list .grid-x > .cell { margin-bottom: 22px; }

/* Steps */
.step-wrap { position: relative; }
.step-item { text-align: center; padding: 30px 18px; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); transition: var(--transition); height: 100%; }
.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-num { width: 46px; height: 46px; margin: 0 auto 16px; background: var(--primary); color: #fff; font-size: 18px; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 16px rgba(20,86,230,.28); }
.step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-item p { color: var(--text-weak); font-size: 14px; line-height: 1.65; }
.step-arrow { display: flex; align-items: center; justify-content: center; font-size: 22px; color: #c8d2e4; }

/* Deep band */
.band-deep { background: var(--bg-deep); color: #fff; }
.band-deep .section-title { color: #fff; }
.band-deep .section-sub { color: rgba(255,255,255,.75); }
.band-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 30px; transition: var(--transition); height: 100%; backdrop-filter: blur(6px); }
.band-card:hover { background: rgba(255,255,255,.13); transform: translateY(-4px); }
.band-icon { width: 50px; height: 50px; background: rgba(20,86,230,.85); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff; margin-bottom: 18px; }
.band-card h3 { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.band-card p { color: rgba(255,255,255,.72); font-size: 14px; line-height: 1.65; }

/* Feature split */
.feature-split { display: flex; gap: 40px; align-items: center; flex-wrap: wrap; }
.feature-split .txt { flex: 1; min-width: 300px; }
.feature-split .img-box { flex: 1; min-width: 300px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-hover); }
.feature-split .img-box img { width: 100%; height: 280px; object-fit: cover; }
.feature-list li { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 15px; }
.feature-list li:last-child { border-bottom: none; }
.feature-list i { color: var(--primary); font-size: 16px; flex-shrink: 0; }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: 14px; margin-bottom: 14px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: #cfdbf0; }
.faq-q { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 600; user-select: none; }
.faq-q i { color: var(--primary); font-size: 15px; transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; }
.faq-item.open .faq-a { max-height: 400px; padding: 2px 24px 22px; }
.faq-a p { color: var(--text-weak); font-size: 14.5px; line-height: 1.75; }

/* CTA */
.cta-wrap { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #2f78ff 100%); border-radius: 24px; padding: 58px 45px; color: #fff; position: relative; overflow: hidden; }
.cta-wrap::before { content: ''; position: absolute; right: -40px; top: -40px; width: 220px; height: 220px; background: rgba(255,255,255,.08); border-radius: 50%; }
.cta-wrap h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; }
.cta-wrap p { opacity: .9; font-size: 16px; margin-bottom: 28px; max-width: 560px; }
.cta-btn { background: var(--accent); color: #fff; padding: 14px 36px; border-radius: 30px; font-weight: 700; font-size: 15px; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.cta-btn:hover { background: #e26914; transform: translateY(-2px); box-shadow: 0 10px 30px rgba(247,122,31,.4); }

/* Footer */
.site-footer { background: #0a1225; color: #a7b3cc; padding: 60px 0 28px; }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 14px; display: inline-flex; align-items: center; gap: 10px; }
.footer-brand i { color: #4d8bff; }
.footer-desc { font-size: 14px; line-height: 1.7; max-width: 320px; opacity: .85; }
.footer-title { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; letter-spacing: .5px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; opacity: .85; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover { color: #4d8bff; opacity: 1; padding-left: 4px; }
.footer-line { border-top: 1px solid rgba(255,255,255,.1); margin: 42px 0 0; padding-top: 22px; text-align: center; font-size: 13px; opacity: .75; }

/* Responsive */
@media (max-width: 1023px) {
    .section { padding: 62px 0; }
    .hero { min-height: 520px; }
    .hero-content { padding: 60px 0; }
    .header-top .grid-x { gap: 14px; }
    .header-search { max-width: 100%; }
    .header-cta { font-size: 13px; padding: 8px 18px; }
}
@media (max-width: 767px) {
    .section { padding: 50px 0; }
    .hero { min-height: 460px; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 15px; }
    .hero-actions .btn-primary, .hero-actions .btn-outline { padding: 12px 24px; font-size: 14px; width: 100%; justify-content: center; }
    .hero-stats { margin-top: 30px; padding-top: 24px; }
    .stat-num { font-size: 24px; }
    .hero-stats .grid-x > div { margin-bottom: 18px; }
    .news-card { flex-direction: column; align-items: flex-start; gap: 14px; padding: 20px; }
    .news-date { display: inline-flex; align-items: baseline; gap: 6px; padding: 8px 16px; }
    .news-date .d { font-size: 22px; }
    .news-date .m { margin: 0; }
    .faq-q { font-size: 15px; padding: 16px 18px; }
    .faq-a { padding: 0 18px; }
    .faq-item.open .faq-a { padding: 2px 18px 18px; }
    .cta-wrap { padding: 40px 26px; text-align: center; }
    .cta-wrap h2 { font-size: 24px; }
    .feature-split { gap: 30px; }
    .feature-split .img-box img { height: 220px; }
    .header-search { display: none; }
    .nav-tabs-wrap .grid-container { padding: 0; }
    .nav-list { padding: 8px 16px; }
    .footer-links { margin-bottom: 28px; }
}
@media (max-width: 520px) {
    .hero { min-height: 430px; }
    .hero-content { padding: 48px 0; }
    .section-title { font-size: 24px; }
    .section-head { margin-bottom: 36px; }
    .hero-badge { font-size: 12px; }
    .hero-actions { flex-direction: column; }
    .container-x { padding: 0 18px; }
}

/* roulang page: article */
:root {
    --primary: #1e5eff;
    --primary-light: #4d8dff;
    --primary-dark: #1347c9;
    --accent: #ffb03a;
    --accent-dark: #e69520;
    --dark-bg: #0b1528;
    --dark-bg-2: #111e38;
    --light-bg: #f4f7fb;
    --card-bg: #ffffff;
    --text-main: #1c2a45;
    --text-weak: #6a7b96;
    --border-light: #e3eaf2;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 4px 12px rgba(18, 38, 63, .06);
    --shadow-md: 0 12px 30px rgba(18, 38, 63, .10);
    --shadow-lg: 0 20px 45px rgba(18, 38, 63, .14);
    --transition: all .3s cubic-bezier(.25, .8, .25, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--light-bg);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; border: none; outline: none; }
ul, ol { list-style: none; }

.container-fluid-custom { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ========== Header ========== */
.site-header { background: #fff; box-shadow: 0 2px 12px rgba(10, 30, 60, .06); position: sticky; top: 0; z-index: 100; }
.header-top { padding: 14px 0; border-bottom: 1px solid var(--border-light); }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 800; color: var(--primary); letter-spacing: .5px; }
.brand-logo i { font-size: 1.4rem; color: var(--primary); background: rgba(30, 94, 255, .1); width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; }
.brand-logo:hover { color: var(--primary-dark); transform: translateY(-1px); }
.header-search { display: flex; align-items: center; background: #f1f4f9; border-radius: 30px; padding: 4px 4px 4px 18px; border: 1px solid transparent; transition: var(--transition); max-width: 320px; }
.header-search:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(30, 94, 255, .12); }
.header-search input { background: transparent; border: none; font-size: .89rem; flex: 1; color: var(--text-main); min-width: 100px; }
.header-search input::placeholder { color: #9aa8bf; }
.header-search button { background: var(--primary); color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); flex-shrink: 0; }
.header-search button:hover { background: var(--primary-dark); transform: scale(1.05); }
.header-cta { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--accent), #ffcc66); color: #1c2a45; font-weight: 700; font-size: .86rem; padding: 9px 22px; border-radius: 30px; box-shadow: 0 4px 12px rgba(255, 176, 58, .35); transition: var(--transition); }
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 176, 58, .45); color: #1c2a45; }
.nav-tabs-wrap { background: #fff; border-bottom: 1px solid var(--border-light); }
.nav-list { display: flex; align-items: center; gap: 4px; overflow-x: auto; padding: 6px 0; scrollbar-width: thick; scrollbar-color: #dbe2ec transparent; }
.nav-list::-webkit-scrollbar { height: 3px; }
.nav-list::-webkit-scrollbar-thumb { background: #dbe2ec; border-radius: 4px; }
.nav-list a { display: inline-flex; align-items: center; gap: 7px; padding: 9px 20px; border-radius: 30px; font-size: .88rem; font-weight: 500; color: var(--text-weak); white-space: nowrap; border: 1px solid transparent; transition: var(--transition); }
.nav-list a i { font-size: .82rem; opacity: .85; }
.nav-list a:hover { color: var(--primary); background: rgba(30, 94, 255, .06); border-color: rgba(30, 94, 255, .16); }
.nav-list a.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 6px 16px rgba(30, 94, 255, .28); }

/* ========== Page Banner ========== */
.page-banner { position: relative; padding: 80px 0 60px; background-size: cover; background-position: center; background-repeat: no-repeat; color: #fff; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(11, 21, 40, .86) 0%, rgba(11, 21, 40, .68) 55%, rgba(30, 94, 255, .35) 100%); }
.page-banner .grid-container, .page-banner .container-fluid-custom { position: relative; z-index: 2; }
.breadcrumb { font-size: .84rem; color: rgba(255, 255, 255, .75); margin-bottom: 14px; display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.breadcrumb a { color: rgba(255, 255, 255, .85); border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: #fff; border-bottom-color: rgba(255, 255, 255, .6); }
.breadcrumb i { font-size: .68rem; opacity: .6; }
.banner-title { font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800; line-height: 1.35; max-width: 860px; letter-spacing: .5px; text-shadow: 0 4px 20px rgba(0, 0, 0, .25); }
.banner-sub { margin-top: 12px; font-size: .94rem; color: rgba(255, 255, 255, .82); max-width: 640px; line-height: 1.8; }

/* ========== Article Layout ========== */
.article-section { padding: 56px 0 70px; }
.article-main { background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 36px 42px; border: 1px solid var(--border-light); }
.article-cat { display: inline-flex; align-items: center; gap: 6px; background: rgba(30, 94, 255, .08); color: var(--primary); font-size: .78rem; font-weight: 700; padding: 5px 14px; border-radius: 20px; border: 1px solid rgba(30, 94, 255, .18); margin-bottom: 14px; }
.article-cat i { font-size: .72rem; }
.article-title { font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 800; line-height: 1.5; color: var(--text-main); letter-spacing: .3px; margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; padding: 13px 0 20px; border-bottom: 1px solid var(--border-light); margin-bottom: 24px; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--text-weak); }
.article-meta span i { font-size: .78rem; color: var(--primary); opacity: .7; }
.article-cover { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 26px; box-shadow: var(--shadow-sm); }
.article-cover img { width: 100%; object-fit: cover; transition: var(--transition); }
.article-cover img:hover { transform: scale(1.02); }
.article-content { font-size: .96rem; line-height: 1.95; color: #2c3e50; }
.article-content p { margin-bottom: 1.35em; }
.article-content h2 { font-size: 1.35rem; font-weight: 800; margin: 1.8em 0 .8em; padding-left: 14px; border-left: 4px solid var(--primary); color: var(--text-main); }
.article-content h3 { font-size: 1.15rem; font-weight: 700; margin: 1.5em 0 .7em; color: var(--text-main); }
.article-content ul, .article-content ol { padding-left: 1.4em; margin-bottom: 1.4em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: .5em; }
.article-content blockquote { background: #f0f4ff; border-left: 4px solid var(--primary); padding: 16px 22px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-weak); font-style: italic; margin-bottom: 1.5em; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }
.article-content img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border-light); }
.tag-item { display: inline-flex; align-items: center; gap: 6px; background: #f0f3f9; color: var(--text-weak); font-size: .8rem; padding: 6px 14px; border-radius: 20px; transition: var(--transition); }
.tag-item:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ========== Sidebar ========== */
.sidebar-widget { background: var(--card-bg); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 24px; margin-bottom: 22px; border: 1px solid var(--border-light); }
.sidebar-widget-title { font-size: 1rem; font-weight: 800; color: var(--text-main); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; padding-bottom: 12px; border-bottom: 2px solid var(--border-light); }
.sidebar-widget-title i { color: var(--primary); font-size: .9rem; }
.sidebar-nav-list { display: flex; flex-direction: column; gap: 6px; }
.sidebar-nav-list a { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 10px; font-size: .86rem; color: var(--text-weak); background: #f8fafe; transition: var(--transition); }
.sidebar-nav-list a i { font-size: .8rem; color: var(--primary); }
.sidebar-nav-list a:hover { background: rgba(30, 94, 255, .08); color: var(--primary); transform: translateX(3px); }
.sidebar-post-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-post-item { display: flex; align-items: flex-start; gap: 12px; padding: 10px; border-radius: 10px; transition: var(--transition); border: 1px solid transparent; }
.sidebar-post-item:hover { background: #f8fafe; border-color: var(--border-light); transform: translateX(3px); }
.sidebar-post-thumb { width: 52px; height: 52px; border-radius: 10px; object-fit: cover; flex-shrink: 0; }
.sidebar-post-info { flex: 1; min-width: 0; }
.sidebar-post-info h5 { font-size: .84rem; font-weight: 600; line-height: 1.5; color: var(--text-main); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 3px; }
.sidebar-post-info span { font-size: .74rem; color: var(--text-weak); display: flex; align-items: center; gap: 4px; }
.sidebar-contact { background: linear-gradient(135deg, var(--dark-bg), var(--dark-bg-2)); border-radius: var(--radius-md); padding: 26px; color: #fff; border: none; }
.sidebar-contact h4 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.sidebar-contact h4 i { color: var(--accent); }
.sidebar-contact p { font-size: .82rem; color: rgba(255, 255, 255, .78); line-height: 1.7; margin-bottom: 8px; }
.sidebar-contact .contact-btn { display: inline-flex; align-items: center; gap: 6px; width: 100%; justify-content: center; background: var(--accent); color: #1c2a45; font-weight: 700; font-size: .84rem; padding: 10px 16px; border-radius: 30px; margin-top: 8px; transition: var(--transition); }
.sidebar-contact .contact-btn:hover { background: #ffcc66; transform: translateY(-2px); box-shadow: 0 8px 18px rgba(255, 176, 58, .35); }

/* ========== Related Section ========== */
.related-section { padding: 40px 0 0; }
.section-title-wrap { display: flex; align-items: center; justify-content: space-between; margin-bottom: 26px; }
.section-title { font-size: 1.4rem; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 10px; }
.section-title i { color: var(--primary); font-size: 1.2rem; }
.section-more { font-size: .84rem; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.section-more:hover { transform: translateX(4px); }
.related-card { background: var(--card-bg); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); transition: var(--transition); height: 100%; }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.related-card-cover { height: 150px; overflow: hidden; position: relative; }
.related-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.related-card:hover .related-card-cover img { transform: scale(1.08); }
.related-card-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11, 21, 40, .45), transparent 50%); }
.related-card-body { padding: 18px 18px 20px; }
.related-card-body h3 { font-size: .92rem; font-weight: 700; line-height: 1.55; color: var(--text-main); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body h3 a:hover { color: var(--primary); }
.related-card-body p { font-size: .8rem; color: var(--text-weak); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.related-card-meta { display: flex; align-items: center; justify-content: space-between; font-size: .74rem; color: var(--text-weak); }

/* ========== CTA Section ========== */
.cta-section { padding: 70px 0; background: linear-gradient(135deg, var(--dark-bg), #162349 60%, var(--primary-dark)); color: #fff; margin-top: 60px; position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; background: radial-gradient(circle, rgba(255, 255, 255, .12), transparent 60%); }
.cta-section::after { content: ""; position: absolute; left: -60px; bottom: -100px; width: 260px; height: 260px; background: radial-gradient(circle, rgba(255, 176, 58, .2), transparent 60%); }
.cta-inner { position: relative; z-index: 2; text-align: center; }
.cta-inner h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 12px; }
.cta-inner p { color: rgba(255, 255, 255, .85); max-width: 600px; margin: 0 auto 24px; font-size: .94rem; }
.cta-buttons { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cta-btn-primary { background: var(--accent); color: #1c2a45; font-weight: 700; padding: 12px 32px; border-radius: 30px; font-size: .9rem; display: inline-flex; align-items: center; gap: 8px; box-shadow: 0 6px 20px rgba(255, 176, 58, .4); transition: var(--transition); }
.cta-btn-primary:hover { background: #ffcc66; transform: translateY(-3px); box-shadow: 0 10px 28px rgba(255, 176, 58, .5); color: #1c2a45; }
.cta-btn-secondary { background: rgba(255, 255, 255, .1); color: #fff; font-weight: 600; padding: 12px 32px; border-radius: 30px; font-size: .9rem; display: inline-flex; align-items: center; gap: 8px; border: 1px solid rgba(255, 255, 255, .25); backdrop-filter: blur(6px); transition: var(--transition); }
.cta-btn-secondary:hover { background: rgba(255, 255, 255, .2); border-color: rgba(255, 255, 255, .5); color: #fff; transform: translateY(-3px); }

/* ========== Footer ========== */
.site-footer { background: #0a1322; color: #aab8d0; padding-top: 54px; }
.site-footer .grid-x { margin-bottom: 30px; }
.site-footer .footer-brand { font-size: 1.2rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.site-footer .footer-brand i { color: var(--primary-light); }
.footer-desc { font-size: .84rem; line-height: 1.8; color: #8296b8; margin-bottom: 16px; max-width: 320px; }
.footer-title { font-size: .95rem; color: #fff; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 6px; }
.footer-title::after { content: ""; width: 22px; height: 2px; background: var(--primary); border-radius: 2px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 9px; font-size: .83rem; display: flex; align-items: center; gap: 6px; }
.footer-links a { color: #8296b8; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
.footer-links a i { font-size: .7rem; color: var(--primary-light); }
.footer-links a:hover { color: #fff; transform: translateX(4px); }
.footer-links li i { color: var(--primary-light); font-size: .8rem; width: 16px; flex-shrink: 0; }
.footer-line { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; font-size: .78rem; color: #5d6f8e; text-align: center; }

/* ========== Empty State ========== */
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state i { font-size: 3.4rem; color: #c6d0e0; margin-bottom: 20px; display: block; }
.empty-state h2 { font-size: 1.5rem; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
.empty-state p { color: var(--text-weak); margin-bottom: 24px; }
.empty-state .btn-back { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 11px 28px; border-radius: 30px; font-weight: 600; font-size: .88rem; transition: var(--transition); }
.empty-state .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .article-main { padding: 30px; }
    .page-banner { padding: 60px 0 48px; }
}
@media (max-width: 768px) {
    .header-top { padding: 12px 0; }
    .brand-logo span { font-size: 1.05rem; }
    .brand-logo i { width: 32px; height: 32px; font-size: 1.1rem; }
    .nav-list { gap: 2px; }
    .nav-list a { padding: 8px 14px; font-size: .82rem; }
    .page-banner { padding: 48px 0 38px; }
    .article-section { padding: 36px 0 50px; }
    .article-main { padding: 22px 18px; border-radius: var(--radius-md); }
    .article-title { font-size: 1.3rem; }
    .article-meta { gap: 10px; }
    .cta-section { padding: 50px 0; }
}
@media (max-width: 520px) {
    .container-fluid-custom { padding: 0 16px; }
    .header-search { display: none; }
    .header-cta { padding: 8px 16px; font-size: .78rem; }
    .nav-list a { padding: 7px 10px; font-size: .78rem; }
    .banner-title { font-size: 1.4rem; }
    .article-main { padding: 18px 14px; }
    .related-card-cover { height: 130px; }
    .footer-line p { font-size: .73rem; }
}

/* roulang page: category1 */
:root {
            --primary: #0f4c81;
            --primary-dark: #0a355a;
            --primary-light: #e8f1fa;
            --accent: #06b6d4;
            --accent-light: #e0f7fa;
            --warm: #f5a623;
            --bg: #f6f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0b2545;
            --text: #1a2b3c;
            --text-weak: #6b7a8c;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 76, 129, 0.06);
            --shadow: 0 10px 32px rgba(15, 76, 129, 0.10);
            --shadow-lg: 0 18px 50px rgba(15, 76, 129, 0.16);
            --transition: 0.28s ease;
            --space-section: 88px;
            --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        section {
            padding: var(--space-section) 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--accent);
            background: var(--accent-light);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 680px;
            line-height: 1.8;
        }

        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-head .section-title {
            margin-bottom: 10px;
        }

        .section-head .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 18px rgba(11, 37, 69, 0.07);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-top {
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.2px;
        }

        .brand-logo i {
            font-size: 26px;
            color: var(--accent);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 4px 6px 4px 18px;
            transition: border var(--transition), box-shadow var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
        }

        .header-search input {
            width: 180px;
            font-size: 14px;
            color: var(--text);
            background: transparent;
        }

        .header-search input::placeholder {
            color: #94a3b8;
        }

        .header-search button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }

        .header-search button:hover {
            background: var(--accent);
            transform: translateX(2px);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 30px;
            box-shadow: 0 6px 18px rgba(15, 76, 129, 0.28);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .header-cta:hover {
            box-shadow: 0 8px 26px rgba(6, 182, 212, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

        .nav-tabs-wrap {
            background: var(--bg-white);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-weak);
            background: var(--bg);
            white-space: nowrap;
            transition: all var(--transition);
        }

        .nav-list a i {
            font-size: 14px;
        }

        .nav-list a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-list a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 6px 18px rgba(15, 76, 129, 0.25);
        }

        .nav-list a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background: linear-gradient(135deg, rgba(11, 37, 69, 0.93), rgba(15, 76, 129, 0.82)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 90px 0 80px;
            color: #fff;
            position: relative;
        }

        .page-banner .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.12);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 22px;
            backdrop-filter: blur(4px);
        }

        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

        .page-banner .breadcrumb a:hover {
            color: #fff;
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-banner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            line-height: 1.8;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 26px;
        }

        .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            padding: 7px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .banner-tags i {
            color: var(--warm);
        }

        /* ===== Login Flow ===== */
        .flow-section {
            background: var(--bg-white);
        }

        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .flow-step {
            position: relative;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .flow-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }

        .flow-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
            box-shadow: 0 8px 20px rgba(15, 76, 129, 0.22);
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .flow-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
        }

        .flow-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -18px;
            width: 14px;
            height: 14px;
            border-top: 2px solid var(--border);
            border-right: 2px solid var(--border);
            transform: rotate(45deg) translateY(-50%);
            background: var(--bg-white);
        }

        .flow-step:last-child::after {
            display: none;
        }

        /* ===== Login Methods ===== */
        .methods-section {
            background: var(--bg);
        }

        .method-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .method-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-5px);
        }

        .method-card .method-img {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

        .method-card .method-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .method-card .method-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .method-card .method-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 20px;
            padding: 4px 12px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .method-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .method-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .method-card .method-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
        }

        .method-card .method-link i {
            transition: transform var(--transition);
        }

        .method-card .method-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Security Tips ===== */
        .security-section {
            background: var(--bg-dark);
            color: #fff;
        }

        .security-section .section-title {
            color: #fff;
        }

        .security-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .security-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: background var(--transition), transform var(--transition);
        }

        .security-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .security-item .sec-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent), var(--warm));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .security-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .security-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }

        /* ===== Environment ===== */
        .env-section {
            background: var(--bg-white);
        }

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

        .env-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            text-align: center;
            transition: box-shadow var(--transition), border var(--transition);
        }

        .env-card:hover {
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }

        .env-card .env-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .env-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .env-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .env-card ul {
            margin-top: 12px;
            text-align: left;
        }

        .env-card ul li {
            font-size: 13px;
            color: var(--text-weak);
            padding: 4px 0;
            position: relative;
            padding-left: 22px;
        }

        .env-card ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent);
            position: absolute;
            left: 0;
            top: 4px;
            font-size: 12px;
        }

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

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow var(--transition), border var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: #d0d9e4;
        }

        .faq-item details {
            padding: 22px 26px;
        }

        .faq-item summary {
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: color var(--transition);
        }

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

        .faq-item summary::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-weak);
            margin-left: auto;
            transition: transform var(--transition);
        }

        .faq-item details[open] summary {
            color: var(--primary);
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ===== Latest Guides ===== */
        .guides-section {
            background: var(--bg-white);
        }

        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            max-width: 980px;
            margin: 0 auto;
        }

        .guide-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 22px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .guide-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .guide-item .guide-icon {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
            border-radius: 14px;
            background: var(--primary-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
        }

        .guide-item .guide-text {
            flex: 1;
        }

        .guide-item .guide-text h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .guide-item .guide-text p {
            font-size: 14px;
            color: var(--text-weak);
        }

        .guide-item .guide-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            padding: 6px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 50%, var(--accent));
            position: relative;
            overflow: hidden;
            padding: 80px 0;
            color: #fff;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary-custom,
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 700;
            transition: all var(--transition);
            border: 2px solid transparent;
        }

        .btn-primary-custom {
            background: var(--warm);
            color: #1a2b3c;
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
        }

        .btn-primary-custom:hover {
            background: #ffb83d;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(245, 166, 35, 0.45);
        }

        .btn-outline-custom {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: #fff;
            transform: translateY(-3px);
        }

        .btn-primary-custom:focus-visible,
        .btn-outline-custom:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }

        .site-footer .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand i {
            color: var(--accent);
            font-size: 24px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
            font-size: 14px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .site-footer .footer-links i {
            font-size: 12px;
            color: var(--warm);
        }

        .site-footer .footer-line {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Media Queries ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 70px;
            }

            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .flow-step::after {
                display: none;
            }

            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }

            .header-top {
                padding: 10px 0;
            }

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

            .brand-logo i {
                font-size: 22px;
            }

            .header-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .nav-list a {
                padding: 8px 16px;
                font-size: 13px;
            }

            .page-banner {
                padding: 60px 0 50px;
            }

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

            .page-banner p {
                font-size: 15px;
            }

            .section-title {
                font-size: 26px;
            }

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

            .method-card .method-img {
                height: 160px;
            }

            .guide-item {
                flex-wrap: wrap;
            }

            .guide-item .guide-tag {
                margin-left: 68px;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .btn-primary-custom,
            .btn-outline-custom {
                padding: 12px 26px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --space-section: 54px;
            }

            .header-top .grid-x {
                gap: 8px;
            }

            .brand-logo span {
                max-width: 110px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .header-cta {
                padding: 8px 12px;
                font-size: 12px;
            }

            .header-cta i {
                font-size: 14px;
            }

            .nav-list {
                gap: 6px;
            }

            .nav-list a {
                padding: 7px 14px;
                font-size: 12px;
            }

            .page-banner {
                padding: 44px 0 38px;
            }

            .page-banner h1 {
                font-size: 24px;
            }

            .page-banner p {
                font-size: 14px;
            }

            .banner-tags span {
                font-size: 12px;
                padding: 5px 12px;
            }

            .flow-steps {
                grid-template-columns: 1fr;
            }

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

            .section-head {
                margin-bottom: 34px;
            }

            .section-title {
                font-size: 22px;
            }

            .section-subtitle {
                font-size: 14px;
            }

            .faq-item details {
                padding: 16px 18px;
            }

            .faq-item summary {
                font-size: 14px;
            }

            .faq-item .faq-answer {
                font-size: 13px;
            }

            .guide-item {
                padding: 14px 16px;
            }

            .guide-item .guide-text h3 {
                font-size: 14px;
            }

            .guide-item .guide-tag {
                font-size: 12px;
                margin-left: 0;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }

            .site-footer {
                padding-top: 44px;
            }

            .site-footer .footer-line {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1565c0;
            --primary-dark: #0d47a1;
            --primary-light: #e3f2fd;
            --accent: #ff8f00;
            --accent-dark: #e65100;
            --bg: #f6f9fc;
            --bg-dark: #0b1f3a;
            --text: #1a2a3a;
            --text-light: #5a6b7b;
            --border: #e3eaf0;
            --white: #ffffff;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(21,101,192,0.06);
            --shadow: 0 8px 24px rgba(21,101,192,0.09);
            --shadow-lg: 0 16px 40px rgba(21,101,192,0.13);
            --space-section: 80px;
        }

        /* ========== Reset & Base ========== */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--primary); text-decoration: none; transition: color .2s; }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; display: block; }
        ul, ol { list-style: none; }
        .grid-container { max-width: 1200px; }

        /* ========== Header 双层导航 ========== */
        .site-header {
            background: var(--white);
            box-shadow: 0 2px 12px rgba(11,31,58,.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-top { border-bottom: 1px solid rgba(227,234,240,.7); padding: 14px 0; }
        .brand-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 20px; font-weight: 800;
            color: var(--primary-dark); letter-spacing: .5px;
        }
        .brand-logo i { color: var(--accent); font-size: 22px; }
        .brand-logo:hover { color: var(--primary); }
        .header-search {
            display: flex; align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 4px 4px 4px 16px;
            width: 280px;
            transition: border-color .2s;
        }
        .header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,.08); }
        .header-search input {
            border: none; background: transparent;
            font-size: 14px; outline: none;
            color: var(--text); width: 100%;
        }
        .header-search button {
            background: var(--primary); color: #fff;
            border: none; width: 36px; height: 36px;
            border-radius: 50%; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            font-size: 13px; transition: background .2s;
            flex-shrink: 0;
        }
        .header-search button:hover { background: var(--primary-dark); }
        .header-cta {
            display: inline-flex; align-items: center; gap: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff; padding: 10px 22px;
            border-radius: 40px; font-size: 14px; font-weight: 600;
            box-shadow: 0 4px 14px rgba(255,143,0,.3);
            transition: all .25s;
        }
        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255,143,0,.35);
            color: #fff;
        }
        .header-cta:focus { outline: 3px solid rgba(255,143,0,.4); outline-offset: 2px; }
        .nav-tabs-wrap { background: var(--white); }
        .nav-list {
            display: flex; flex-wrap: nowrap;
            overflow-x: auto; gap: 6px;
            padding: 10px 0;
            -webkit-overflow-scrolling: touch;
        }
        .nav-list::-webkit-scrollbar { display: none; }
        .nav-list a {
            display: inline-flex; align-items: center; gap: 7px;
            padding: 9px 20px; border-radius: 40px;
            font-size: 14px; font-weight: 500;
            color: var(--text-light);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all .2s;
        }
        .nav-list a i { font-size: 13px; }
        .nav-list a:hover { color: var(--primary); background: var(--primary-light); }
        .nav-list a:focus { outline: 3px solid rgba(21,101,192,.3); outline-offset: -1px; }
        .nav-list a.active {
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 14px rgba(21,101,192,.28);
        }

        /* ========== 页面 Hero ========== */
        .page-hero {
            padding: 90px 0;
            background:
                linear-gradient(135deg, rgba(11,31,58,.92) 0%, rgba(13,71,161,.78) 55%, rgba(21,101,192,.72) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute; top: 0; right: 0;
            width: 380px; height: 380px;
            background: radial-gradient(circle, rgba(255,143,0,.3), transparent 70%);
            border-radius: 50%;
            transform: translate(30%, -30%);
        }
        .page-hero .grid-container { position: relative; z-index: 2; }
        .page-hero h1 {
            font-size: 36px; font-weight: 800;
            line-height: 1.3; margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .page-hero p {
            font-size: 16px; color: rgba(255,255,255,.85);
            max-width: 720px; margin-bottom: 28px; line-height: 1.8;
        }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,.14);
            border: 1px solid rgba(255,255,255,.25);
            backdrop-filter: blur(6px);
            padding: 7px 18px; border-radius: 40px;
            font-size: 13px; margin-bottom: 22px;
        }
        .hero-btn {
            display: inline-flex; align-items: center; gap: 8px;
            background: #fff; color: var(--primary-dark);
            font-weight: 700; padding: 13px 30px;
            border-radius: 40px; font-size: 15px;
            box-shadow: 0 6px 20px rgba(0,0,0,.12);
            transition: all .25s;
        }
        .hero-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,.18);
            color: var(--primary);
        }
        .hero-btn:focus { outline: 3px solid rgba(255,255,255,.5); outline-offset: 2px; }
        .hero-btn i { color: var(--accent); }

        /* ========== 通用板块 ========== */
        .section { padding: var(--space-section) 0; }
        .section-alt { background: var(--white); }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 30px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
        .section-title p { color: var(--text-light); font-size: 15px; max-width: 640px; margin: 0 auto; }
        .section-title-line {
            width: 50px; height: 4px; border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: 14px auto 0;
        }

        /* ========== 功能卡片 ========== */
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            height: 100%;
            transition: all .3s;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute; top: 0; left: 0;
            width: 100%; height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0); transform-origin: left;
            transition: transform .35s;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(21,101,192,.25);
        }
        .feature-card:hover::before { transform: scaleX(1); }
        .feature-icon {
            width: 58px; height: 58px;
            border-radius: 16px;
            display: flex; align-items: center; justify-content: center;
            font-size: 24px; margin-bottom: 18px;
            background: var(--primary-light); color: var(--primary);
        }
        .feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { color: var(--text-light); font-size: 14px; line-height: 1.75; }

        /* ========== 图文交替区块 ========== */
        .feature-row { padding: 56px 0; }
        .feature-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            height: 320px;
        }
        .feature-img-wrap img {
            width: 100%; height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .feature-img-wrap:hover img { transform: scale(1.03); }
        .feature-img-tag {
            position: absolute; top: 16px; left: 16px;
            background: rgba(255,255,255,.92);
            color: var(--primary-dark);
            font-size: 13px; font-weight: 600;
            padding: 6px 16px; border-radius: 30px;
            box-shadow: var(--shadow-sm);
        }
        .feature-text { padding: 20px 0; }
        .feature-text .tag-label {
            display: inline-block;
            background: var(--primary-light); color: var(--primary);
            font-size: 12px; font-weight: 600;
            padding: 5px 14px; border-radius: 30px;
            margin-bottom: 14px;
        }
        .feature-text h3 { font-size: 24px; font-weight: 800; margin-bottom: 14px; line-height: 1.4; }
        .feature-text p { color: var(--text-light); font-size: 15px; margin-bottom: 16px; line-height: 1.8; }
        .feature-list li {
            display: flex; gap: 10px; align-items: flex-start;
            margin-bottom: 12px;
            color: var(--text); font-size: 15px;
        }
        .feature-list li i { color: var(--primary); margin-top: 5px; font-size: 14px; flex-shrink: 0; }

        /* ========== 数据统计 ========== */
        .stats-band {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0d2a52 100%);
            padding: 70px 0; color: #fff;
            position: relative; overflow: hidden;
        }
        .stats-band::before {
            content: '';
            position: absolute; right: -100px; bottom: -100px;
            width: 300px; height: 300px; border-radius: 50%;
            background: radial-gradient(circle, rgba(255,143,0,.2), transparent 70%);
        }
        .stats-band::after {
            content: '';
            position: absolute; left: -80px; top: -80px;
            width: 220px; height: 220px; border-radius: 50%;
            background: radial-gradient(circle, rgba(21,101,192,.25), transparent 70%);
        }
        .stats-band .grid-container { position: relative; z-index: 2; }
        .stat-item { text-align: center; padding: 20px; }
        .stat-item .stat-num {
            font-size: 40px; font-weight: 800;
            background: linear-gradient(135deg, #fff, #90caf9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label { color: rgba(255,255,255,.72); font-size: 14px; margin-top: 8px; }
        .stat-item i { font-size: 28px; color: var(--accent); margin-bottom: 14px; display: block; }

        /* ========== 流程步骤 ========== */
        .steps-section { background: var(--white); }
        .step-item { text-align: center; padding: 30px 24px; position: relative; }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 54px; left: 60%;
            width: 72%;
            border-top: 2px dashed var(--border);
            z-index: 0;
        }
        .step-num {
            width: 48px; height: 48px;
            border-radius: 50%;
            background: var(--primary); color: #fff;
            font-weight: 700; font-size: 18px;
            display: inline-flex; align-items: center; justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 6px 16px rgba(21,101,192,.3);
            position: relative; z-index: 1;
        }
        .step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
        .step-item p { color: var(--text-light); font-size: 14px; line-height: 1.7; margin: 0 auto; max-width: 230px; }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-bottom: 14px;
            transition: all .25s;
        }
        .faq-item:hover { border-color: rgba(21,101,192,.3); box-shadow: var(--shadow-sm); }
        .faq-item h3 {
            font-size: 16px; font-weight: 600; color: var(--text);
            display: flex; gap: 10px; align-items: flex-start;
        }
        .faq-item h3 i { color: var(--accent); font-size: 16px; margin-top: 3px; flex-shrink: 0; }
        .faq-item p {
            margin-top: 10px; padding-left: 26px;
            color: var(--text-light); font-size: 14px; line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
            background:
                linear-gradient(135deg, rgba(11,31,58,.92) 0%, rgba(21,101,192,.82) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff; text-align: center;
            position: relative;
        }
        .cta-section h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; }
        .cta-section p {
            color: rgba(255,255,255,.82);
            max-width: 600px; margin: 0 auto 30px;
            font-size: 15px; line-height: 1.8;
        }
        .cta-btn {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--accent); color: #fff;
            padding: 14px 36px; border-radius: 40px;
            font-weight: 700; font-size: 15px;
            box-shadow: 0 8px 24px rgba(255,143,0,.4);
            transition: all .25s;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255,143,0,.5);
            color: #fff; background: var(--accent-dark);
        }
        .cta-btn:focus { outline: 3px solid rgba(255,143,0,.45); outline-offset: 3px; }
        .cta-btn i { font-size: 14px; }
        .cta-note { color: rgba(255,255,255,.6); font-size: 13px; margin-top: 18px; }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,.75);
            padding: 70px 0 0;
        }
        .footer-brand {
            display: inline-flex; align-items: center; gap: 10px;
            font-size: 22px; font-weight: 800; color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand i { color: var(--accent); }
        .footer-brand:hover { color: #fff; }
        .footer-desc {
            font-size: 14px; color: rgba(255,255,255,.6);
            line-height: 1.8; padding-right: 20px;
        }
        .footer-title {
            color: #fff; font-size: 16px; font-weight: 600;
            margin-bottom: 18px; position: relative;
            padding-bottom: 12px;
        }
        .footer-title::after {
            content: '';
            position: absolute; left: 0; bottom: 0;
            width: 28px; height: 3px; border-radius: 3px;
            background: var(--accent);
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            color: rgba(255,255,255,.65); font-size: 14px;
            display: inline-flex; align-items: center; gap: 6px;
            transition: all .2s;
        }
        .footer-links a:hover { color: var(--accent); padding-left: 4px; }
        .footer-links li i { color: rgba(255,255,255,.4); font-size: 13px; width: 16px; }
        .footer-line {
            margin-top: 50px;
            border-top: 1px solid rgba(255,255,255,.1);
            padding: 22px 0; text-align: center;
        }
        .footer-line p { font-size: 13px; color: rgba(255,255,255,.5); }

        /* ========== 响应式断点 ========== */
        @media screen and (max-width: 1024px) {
            :root { --space-section: 64px; }
            .page-hero { padding: 72px 0; }
            .feature-row { padding: 40px 0; }
            .header-search { width: 220px; }
        }

        @media screen and (max-width: 768px) {
            :root { --space-section: 50px; }
            .page-hero { padding: 60px 0; text-align: center; }
            .page-hero h1 { font-size: 28px; }
            .page-hero p { margin-left: auto; margin-right: auto; }
            .feature-text { text-align: center; }
            .feature-text .feature-list { text-align: left; display: inline-block; }
            .step-item:not(:last-child)::after { display: none; }
            .stat-item .stat-num { font-size: 32px; }
            .section-title h2 { font-size: 24px; }
            .header-cta span { display: none; }
            .header-cta { padding: 10px 14px; }
            .header-top { padding: 10px 0; }
            .header-search { width: 180px; }
            .feature-img-wrap { height: 240px; }
        }

        @media screen and (max-width: 520px) {
            .header-top .grid-x { flex-wrap: nowrap; align-items: center; }
            .header-search { display: none; }
            .brand-logo { font-size: 17px; gap: 7px; }
            .brand-logo i { font-size: 18px; }
            .nav-list a { padding: 8px 14px; font-size: 13px; }
            .page-hero { padding: 44px 0; }
            .page-hero h1 { font-size: 23px; }
            .page-hero p { font-size: 14px; }
            .feature-img-wrap { height: 210px; }
            .section { padding: 46px 0; }
            .faq-item { padding: 18px 20px; }
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 23px; }
            .footer-brand { font-size: 19px; }
            .footer-line p { font-size: 12px; padding: 0 10px; }
        }