/* roulang page: index */
:root{
  --primary:#0f172a;
  --primary-light:#1e293b;
  --accent:#6366f1;
  --accent-dark:#4f46e5;
  --gold:#d4a853;
  --bg:#f8fafc;
  --bg-dark:#0b1220;
  --text:#1e293b;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 24px rgba(15,23,42,.08);
  --shadow-lg:0 14px 44px rgba(15,23,42,.12);
  --transition:all .35s ease;
  --font-stack:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-stack);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input,textarea{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:680px;margin-bottom:56px}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--accent);background:rgba(99,102,241,.08);padding:6px 16px;border-radius:999px;text-transform:uppercase}
.section-head h2{font-size:38px;line-height:1.25;font-weight:700;margin-top:18px;letter-spacing:-.02em}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-weak);line-height:1.8}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-weight:600;font-size:15px;transition:var(--transition);border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 20px rgba(99,102,241,.3)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 28px rgba(99,102,241,.4)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--accent);border-color:var(--accent)}
.btn-outline:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 6px 22px rgba(99,102,241,.3)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.logo{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--primary);display:flex;align-items:center;gap:10px}
.logo span{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(99,102,241,.18)}
.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{position:relative;padding:10px 18px;font-size:15px;font-weight:500;color:var(--text-weak);border-radius:999px}
.nav-link:hover{color:var(--primary);background:rgba(15,23,42,.04)}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--accent)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;background:rgba(15,23,42,.04);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{width:20px;height:2px;background:var(--primary);border-radius:2px;transition:var(--transition)}

/* Hero */
.hero{position:relative;min-height:640px;display:flex;align-items:center;background-size:cover;background-position:center;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(11,18,32,.92) 0%,rgba(11,18,32,.62) 55%,rgba(99,102,241,.25) 100%)}
.hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:160px;background:linear-gradient(transparent,rgba(248,250,252,1))}
.hero-inner{position:relative;z-index:2;padding:80px 0;max-width:720px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--gold);background:rgba(255,255,255,.08);padding:8px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.14);text-transform:uppercase}
.hero h1{font-size:58px;line-height:1.12;font-weight:800;margin-top:26px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero-lead{font-size:18px;line-height:1.8;color:rgba(255,255,255,.8);margin-top:20px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* Feature Cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 32px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--accent);opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-dark));margin-bottom:22px}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-weak);font-size:15px;line-height:1.75}

/* Category Cards */
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.category-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.category-media{position:relative;height:200px;overflow:hidden}
.category-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.category-card:hover .category-media img{transform:scale(1.06)}
.category-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(11,18,32,.55))}
.category-body{padding:24px;display:flex;flex-direction:column;flex:1}
.category-body h3{font-size:18px;font-weight:700;margin-bottom:10px}
.category-body p{font-size:14px;color:var(--text-weak);line-height:1.7;flex:1}
.category-link{margin-top:20px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
.category-link:hover{color:var(--accent-dark);gap:10px}

/* News List */
.news-section{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:30px;transition:var(--transition);display:flex;flex-direction:column;gap:10px}
.news-card:hover{background:#fff;border-color:transparent;box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.news-tag{display:inline-flex;width:fit-content;font-size:12px;font-weight:600;color:var(--accent);background:rgba(99,102,241,.1);padding:4px 14px;border-radius:999px}
.news-card h3{font-size:18px;font-weight:700;line-height:1.5;color:var(--text);transition:var(--transition)}
.news-card:hover h3{color:var(--accent)}
.news-card p{font-size:14px;color:var(--text-weak);line-height:1.7}
.news-card .news-date{font-size:13px;color:var(--text-weak);background:rgba(15,23,42,.03);display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;width:fit-content;margin-top:4px}
.news-empty{grid-column:1/-1;padding:48px;text-align:center;color:var(--text-weak);background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius)}

/* Stats */
.stats{background:var(--bg-dark);color:#fff;position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;top:-40%;right:-10%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,.35),transparent 70%)}
.stats-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stats-item{padding:32px 20px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius)}
.stats-num{font-size:40px;font-weight:800;color:#fff;line-height:1.2}
.stats-num span{color:var(--gold)}
.stats-label{font-size:14px;color:rgba(255,255,255,.6);margin-top:10px}

/* Process */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.process-step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:var(--transition)}
.process-step:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.step-num{width:56px;height:56px;border-radius:50%;background:rgba(99,102,241,.1);color:var(--accent);font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;position:relative}
.step-num::after{content:"";position:absolute;top:50%;left:calc(100% + 16px);width:calc(100% - 32px);height:1px;background:var(--border)}
.process-step:last-child .step-num::after{display:none}
.process-step h3{font-size:17px;font-weight:700;margin-bottom:10px}
.process-step p{font-size:14px;color:var(--text-weak);line-height:1.7}

/* FAQ */
.faq-list{max-width:840px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:26px 4px;cursor:pointer;font-size:17px;font-weight:600;color:var(--text);list-style:none;transition:var(--transition)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::after{content:"+";font-size:26px;font-weight:300;color:var(--accent);flex-shrink:0;transition:var(--transition)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 4px 26px;color:var(--text-weak);font-size:15px;line-height:1.8}

/* CTA */
.cta{position:relative;background:linear-gradient(135deg,var(--accent),var(--accent-dark));border-radius:28px;margin:96px 0;padding:72px 64px;overflow:hidden;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta::before{content:"";position:absolute;top:-60%;right:-10%;width:380px;height:380px;border-radius:50%;background:rgba(255,255,255,.12)}
.cta h2{font-size:34px;font-weight:700;line-height:1.3;position:relative;z-index:2}
.cta p{margin-top:12px;color:rgba(255,255,255,.82);font-size:16px;position:relative;z-index:2}
.cta .btn{background:#fff;color:var(--accent-dark);box-shadow:0 8px 30px rgba(0,0,0,.18);position:relative;z-index:2}
.cta .btn:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,0,0,.25)}

/* Footer */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;opacity:.6;max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.08em;text-transform:uppercase}
.footer-nav a{display:block;padding:6px 0;font-size:14px;opacity:.7}
.footer-nav a:hover{opacity:1;color:var(--gold);padding-left:4px}
.footer-info li{display:flex;align-items:center;gap:10px;padding:6px 0;font-size:14px;opacity:.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:26px 0;text-align:center;font-size:13px;opacity:.55}

/* Responsive */
@media(max-width:1024px){
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cta{flex-direction:column;text-align:center;padding:56px 32px}
}
@media(max-width:768px){
  .section{padding:72px 0}
  .section-head h2{font-size:30px}
  .hero{min-height:540px}
  .hero h1{font-size:40px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:76px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 24px;gap:6px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);transform:translateY(-120%);opacity:0;pointer-events:none;transition:all .4s ease}
  .main-nav.nav-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{width:100%;text-align:center;padding:14px}
  .nav-link.active::after{display:none}
  .footer-grid{grid-template-columns:1fr;gap:36px}
}
@media(max-width:520px){
  .container{padding:0 18px}
  .feature-grid,.category-grid,.process-steps,.news-list,.stats-grid{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta{padding:44px 24px}
}

/* roulang page: article */
:root {
    --bg: #f6f5f1;
    --surface: #ffffff;
    --surface-dark: #0b1b14;
    --surface-deep: #132b21;
    --ink: #1d2a24;
    --ink-soft: #5f7068;
    --line: rgba(29, 42, 36, .1);
    --brand: #0f3b2b;
    --brand-deep: #09241b;
    --accent: #cfa558;
    --accent-soft: rgba(207, 165, 88, .14);
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow: 0 20px 60px rgba(15, 42, 32, .08);
    --shadow-soft: 0 8px 30px rgba(15, 42, 32, .06);
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color .25s ease;
}

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

ul,
ol {
    list-style: none;
}

button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

input,
textarea {
    font: inherit;
}

h1,
h2,
h3,
h4 {
    line-height: 1.3;
    font-weight: 700;
}

.container {
    width: min(100% - 48px, var(--max-width));
    margin-inline: auto;
}

/* Header / Nav */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(247, 246, 242, .88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.32rem;
    letter-spacing: .01em;
    color: var(--brand);
    white-space: nowrap;
}

.logo span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 5px var(--accent-soft);
    flex-shrink: 0;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 10px 18px;
    border-radius: 999px;
    color: var(--ink-soft);
    font-weight: 600;
    font-size: .95rem;
    transition: color .25s ease, background .25s ease;
}

.nav-link:hover {
    color: var(--brand);
    background: rgba(15, 59, 43, .06);
}

.nav-link.active {
    color: var(--brand);
}

.nav-link.active::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 3px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    border-radius: 10px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s ease, opacity .3s ease;
}

/* Article Hero */
.article-hero {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 96px 0 80px;
    color: #fff;
    isolation: isolate;
}

.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8, 24, 17, .74) 0%, rgba(8, 24, 17, .88) 70%, rgba(8, 24, 17, .94) 100%);
    z-index: -1;
}

.article-hero .container {
    max-width: 880px;
    margin-inline: auto;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: .88rem;
    color: rgba(255, 255, 255, .68);
    margin-bottom: 28px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, .68);
}

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

.breadcrumb .sep {
    opacity: .45;
}

.article-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    line-height: 1.3;
    letter-spacing: .01em;
    max-width: 800px;
    margin-bottom: 20px;
    text-wrap: balance;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--accent);
    color: #162019;
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .03em;
}

.meta-date {
    font-size: .9rem;
    color: rgba(255, 255, 255, .72);
}

.hero-desc {
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, .82);
    max-width: 720px;
}

/* Article Layout */
.article-section {
    padding: 72px 0;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    align-items: start;
}

.article-main {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 48px 52px;
    box-shadow: var(--shadow);
}

.not-found {
    text-align: center;
    padding: 60px 20px;
}

.not-found h2 {
    font-size: 1.8rem;
    color: var(--brand);
    margin-bottom: 12px;
}

.not-found p {
    color: var(--ink-soft);
    margin-bottom: 28px;
}

.article-body {
    color: #37473f;
    font-size: 1.02rem;
    line-height: 1.9;
}

.article-body h2 {
    font-size: 1.55rem;
    color: var(--brand);
    margin: 1.5em 0 .6em;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
}

.article-body h3 {
    font-size: 1.25rem;
    color: var(--brand);
    margin: 1.3em 0 .5em;
}

.article-body p {
    margin-bottom: 1.2em;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.4em;
    padding: 0;
}

.article-body ul li,
.article-body ol li {
    position: relative;
    padding-left: 26px;
    margin-bottom: .55em;
}

.article-body ul li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: .72em;
    width: 9px;
    height: 9px;
    border-radius: 2px;
    background: var(--accent);
}

.article-body ol {
    counter-reset: list-num;
}

.article-body ol li {
    counter-increment: list-num;
}

.article-body ol li::before {
    content: counter(list-num);
    position: absolute;
    left: 0;
    top: .1em;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: .78rem;
    font-weight: 800;
    display: grid;
    place-items: center;
}

.article-body blockquote {
    margin: 1.5em 0;
    padding: 18px 22px;
    border-left: 4px solid var(--accent);
    border-radius: 0 14px 14px 0;
    background: var(--accent-soft);
    color: var(--ink-soft);
    font-style: normal;
}

.article-body img {
    border-radius: var(--radius-md);
    margin: 1.4em 0;
}

.article-body a {
    color: var(--brand);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(15, 59, 43, .3);
}

.article-body a:hover {
    text-decoration-color: var(--brand);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.4em 0;
    font-size: .95rem;
    border-radius: 12px;
    overflow: hidden;
}

.article-body th,
.article-body td {
    border: 1px solid var(--line);
    padding: 12px 14px;
    text-align: left;
}

.article-body th {
    background: var(--accent-soft);
    color: var(--brand);
    font-weight: 700;
}

/* Sidebar */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 26px;
    box-shadow: var(--shadow-soft);
}

.sidebar-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--brand);
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--line);
    position: relative;
}

.sidebar-title::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 36px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.about-text {
    font-size: .95rem;
    color: var(--ink-soft);
    line-height: 1.85;
}

.side-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.side-link {
    display: flex;
    align-items: center;
    gap: 14px;
    font-weight: 600;
    font-size: .94rem;
    line-height: 1.5;
    color: var(--ink);
}

.side-link img {
    width: 62px;
    height: 62px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
}

.side-link:hover {
    color: var(--brand);
}

.side-link .side-note {
    display: block;
    font-size: .8rem;
    color: var(--ink-soft);
    font-weight: 400;
    margin-top: 2px;
}

.side-cats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.side-cats a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 12px;
    background: var(--bg);
    color: var(--ink-soft);
    font-size: .93rem;
    font-weight: 600;
    transition: background .25s, color .25s, transform .25s;
}

.side-cats a:hover {
    background: var(--accent-soft);
    color: var(--brand);
    transform: translateX(4px);
}

.side-cats a::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* Related */
.related-section {
    position: relative;
    background: var(--surface-dark);
    color: #fff;
    padding: 84px 0;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    isolation: isolate;
}

.related-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11, 27, 20, .96), rgba(9, 27, 19, .96));
    z-index: -1;
}

.section-head {
    margin-bottom: 42px;
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    margin-bottom: 12px;
}

.section-sub {
    color: rgba(255, 255, 255, .62);
    font-size: .98rem;
}

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

.article-card {
    background: var(--surface-deep);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 50px rgba(0, 0, 0, .35);
    border-color: rgba(207, 165, 88, .35);
}

.card-cover {
    height: 180px;
    overflow: hidden;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.article-card:hover .card-cover img {
    transform: scale(1.06);
}

.card-body {
    padding: 24px;
}

.card-cat {
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .04em;
    color: var(--accent);
}

.card-body h3 {
    font-size: 1.08rem;
    line-height: 1.55;
    margin-top: 8px;
    color: #f0f4f1;
}

.card-body p {
    margin-top: 10px;
    font-size: .9rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, .58);
}

/* FAQ */
.faq-section {
    padding: 84px 0;
    background: var(--bg);
}

.faq-grid {
    max-width: 860px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow .3s ease, border-color .3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-soft);
    border-color: rgba(207, 165, 88, .4);
}

.faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-weight: 700;
    color: var(--ink);
    font-size: 1rem;
    transition: color .25s;
}

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

.faq-item summary::after {
    content: "+";
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    display: grid;
    place-items: center;
    font-size: 1.15rem;
    font-weight: 700;
    flex-shrink: 0;
    transition: transform .3s ease, background .3s ease;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
    background: var(--accent);
    color: #162019;
}

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

.faq-answer {
    padding: 0 24px 22px;
    color: var(--ink-soft);
    font-size: .95rem;
    line-height: 1.85;
}

/* CTA */
.cta-section {
    padding: 60px 0 84px;
}

.cta-box {
    position: relative;
    border-radius: var(--radius-lg);
    padding: 76px 48px;
    text-align: center;
    color: #fff;
    background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    overflow: hidden;
    isolation: isolate;
}

.cta-box::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(8, 24, 17, .92), rgba(15, 59, 43, .82));
    z-index: -1;
}

.cta-box h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 14px;
}

.cta-box p {
    color: rgba(255, 255, 255, .8);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.8;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 30px;
    border-radius: 999px;
    font-weight: 700;
    font-size: .95rem;
    transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}

.btn-primary {
    background: var(--accent);
    color: #17231c;
    box-shadow: 0 12px 30px rgba(207, 165, 88, .35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 44px rgba(207, 165, 88, .48);
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, .45);
    color: #fff;
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* Footer */
.site-footer {
    background: var(--brand-deep);
    color: rgba(255, 255, 255, .7);
    padding-top: 70px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.3fr;
    gap: 44px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .logo {
    color: #fff;
}

.footer-brand p {
    font-size: .92rem;
    line-height: 1.85;
    margin-top: 18px;
    color: rgba(255, 255, 255, .6);
    max-width: 340px;
}

.footer-title {
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: .02em;
}

.footer-nav a {
    display: block;
    padding: 6px 0;
    color: rgba(255, 255, 255, .6);
    font-size: .95rem;
}

.footer-nav a:hover {
    color: var(--accent);
}

.footer-info ul li {
    padding: 6px 0;
    font-size: .92rem;
    color: rgba(255, 255, 255, .6);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: .85rem;
    color: rgba(255, 255, 255, .45);
}

/* Responsive */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        align-items: start;
    }

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

@media (max-width: 768px) {
    .container {
        width: min(100% - 32px, var(--max-width));
    }

    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(247, 246, 242, .98);
        padding: 16px 24px 26px;
        gap: 8px;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 24px 50px rgba(15, 42, 32, .1);
        transform: translateY(-14px);
        opacity: 0;
        visibility: hidden;
        transition: transform .3s ease, opacity .3s ease, visibility .3s;
    }

    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        display: block;
        padding: 13px 16px;
        border-radius: 12px;
        font-size: 1rem;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-link.active {
        background: var(--accent-soft);
    }

    .article-hero {
        padding: 72px 0 60px;
    }

    .article-hero h1 {
        font-size: 1.7rem;
    }

    .article-main {
        padding: 30px 24px;
    }

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

    .related-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

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

    .cta-section {
        padding: 48px 0 64px;
    }

    .cta-box {
        padding: 52px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 34px;
    }

    .article-sidebar {
        display: flex;
        flex-direction: column;
    }
}

@media (max-width: 520px) {
    .nav-wrap {
        height: 68px;
    }

    .main-nav {
        top: 68px;
    }

    .logo {
        font-size: 1.16rem;
    }

    .article-hero {
        padding: 60px 0 48px;
    }

    .article-hero h1 {
        font-size: 1.45rem;
    }

    .hero-desc {
        font-size: .95rem;
    }

    .article-main {
        padding: 24px 18px;
        border-radius: 18px;
    }

    .article-body {
        font-size: .97rem;
    }

    .breadcrumb {
        font-size: .8rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

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

    .btn-row {
        flex-direction: column;
        width: 100%;
    }

    .footer-grid {
        gap: 28px;
    }
}

/* roulang page: category1 */
:root {
  --bg: #0b0f1a;
  --surface: #121826;
  --surface-2: #1a2133;
  --border: #232e45;
  --border-light: #2e3b57;
  --primary: #7c5cff;
  --primary-soft: #a78bfa;
  --cyan: #38bdf8;
  --accent: #f5b841;
  --text: #eaf0fb;
  --text-weak: #9aa7bd;
  --text-mute: #6b7893;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 18px 45px rgba(0, 0, 0, .35);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, .22);
  --header-h: 72px;
  --transition: .25s ease;
  --font: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: 0; background: none; cursor: pointer; }
ul, ol { list-style: none; }
::selection { background: rgba(124, 92, 255, .35); color: #fff; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 26, .82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: .02em;
  color: #fff;
}
.logo span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  box-shadow: 0 0 12px rgba(124, 92, 255, .8);
}
.main-nav { display: flex; align-items: center; gap: 34px; }
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  padding: 8px 2px;
  transition: color var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  transition: width var(--transition);
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: #fff; }
.nav-link.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 120; }
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: var(--transition); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 30px;
  border-radius: 999px;
  transition: all var(--transition);
}
.btn-primary {
  background: linear-gradient(120deg, var(--primary), var(--cyan));
  color: #fff;
  box-shadow: 0 10px 30px rgba(124, 92, 255, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 38px rgba(124, 92, 255, .5);
}
.btn-ghost {
  border: 1px solid var(--border-light);
  color: var(--text);
  background: rgba(11, 15, 26, .4);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary-soft);
  background: rgba(124, 92, 255, .08);
}

/* Page Banner */
.page-banner {
  position: relative;
  padding: 100px 0 140px;
  background: linear-gradient(120deg, rgba(11, 15, 26, .96), rgba(18, 24, 44, .82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -140px;
  top: -120px;
  background: radial-gradient(circle, rgba(124, 92, 255, .28), transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}
.page-banner::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  left: -100px;
  bottom: -140px;
  background: radial-gradient(circle, rgba(56, 189, 248, .18), transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}
.banner-inner { position: relative; z-index: 2; max-width: 800px; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: var(--text-mute);
  font-size: 13px;
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-weak); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary-soft); }
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(124, 92, 255, .15);
  border: 1px solid rgba(124, 92, 255, .4);
  color: var(--primary-soft);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: .06em;
}
.page-banner h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: .01em;
  margin-bottom: 18px;
}
.page-banner p {
  color: var(--text-weak);
  font-size: 1.08rem;
  max-width: 660px;
  margin-bottom: 32px;
}
.banner-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* Stats */
.stats-area { padding: 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: -58px;
  position: relative;
  z-index: 5;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-color var(--transition);
}
.stat-card:hover { transform: translateY(-4px); border-color: rgba(124, 92, 255, .45); }
.stat-num {
  font-size: 2.1rem;
  font-weight: 800;
  background: linear-gradient(120deg, var(--primary-soft), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label { color: var(--text-weak); font-size: 14px; margin-top: 6px; }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: rgba(18, 24, 38, .5); }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 44px;
}
.eyebrow {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--primary-soft);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; line-height: 1.25; }
.section-desc { color: var(--text-weak); margin-top: 10px; max-width: 640px; }
.section-more {
  color: var(--primary-soft);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
  white-space: nowrap;
}
.section-more:hover { gap: 12px; }

/* Featured News Cards */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--border-light);
}
.card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}
.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 15, 26, .45), transparent 45%);
  pointer-events: none;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-card:hover .card-media img { transform: scale(1.05); }
.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(11, 15, 26, .78);
  backdrop-filter: blur(6px);
  color: var(--accent);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(245, 184, 65, .35);
}
.card-body { padding: 22px; }
.card-title {
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}
.card-title a { transition: color var(--transition); }
.card-title a:hover { color: var(--primary-soft); }
.card-brief {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  color: var(--text-mute);
  font-size: 13px;
}
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--primary-soft);
  background: rgba(124, 92, 255, .12);
  padding: 3px 10px;
  border-radius: 999px;
}

/* Topic Grid */
.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.topic-card {
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.topic-card:hover {
  transform: translateY(-5px);
  border-color: rgba(124, 92, 255, .5);
  box-shadow: var(--shadow-sm);
}
.topic-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(124, 92, 255, .16);
  color: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.topic-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.topic-card p { color: var(--text-weak); font-size: 13px; line-height: 1.7; }
.topic-count {
  display: inline-block;
  margin-top: 16px;
  font-size: 12px;
  color: var(--primary-soft);
  background: rgba(124, 92, 255, .12);
  padding: 4px 10px;
  border-radius: 999px;
}

/* Latest News */
.latest-wrap {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
}
.news-item {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.news-item:first-child { padding-top: 0; }
.news-item:last-child { border-bottom: 0; padding-bottom: 0; }
.news-thumb {
  width: 170px;
  height: 104px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.news-thumb:hover img { transform: scale(1.06); }
.news-info { flex: 1; }
.item-meta { display: flex; align-items: center; gap: 12px; color: var(--text-mute); font-size: 12px; margin-bottom: 8px; }
.news-info h3 { font-size: 1.05rem; line-height: 1.55; }
.news-info h3 a { transition: color var(--transition); }
.news-info h3 a:hover { color: var(--primary-soft); }
.news-info p {
  color: var(--text-weak);
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  position: sticky;
  top: 96px;
  align-self: start;
}
.side-card h3 { font-size: 1.15rem; margin-bottom: 6px; }
.side-card .side-sub { color: var(--text-mute); font-size: 13px; margin-bottom: 18px; }
.hot-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}
.hot-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.hot-rank {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text-weak);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}
.hot-rank.top {
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
}
.hot-list a { font-size: 14px; line-height: 1.5; color: var(--text-weak); transition: color var(--transition); }
.hot-list a:hover { color: var(--primary-soft); }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
details.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 22px;
  transition: border-color var(--transition);
}
details.faq-item[open] { border-color: rgba(124, 92, 255, .45); }
summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary-soft);
  transition: transform var(--transition);
}
details[open] summary::after { transform: rotate(45deg); }
details p {
  color: var(--text-weak);
  font-size: 14px;
  padding-bottom: 20px;
  line-height: 1.8;
}

/* CTA */
.cta-section {
  padding: 112px 0;
  background: linear-gradient(120deg, rgba(124, 92, 255, .2), rgba(56, 189, 248, .12)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.cta-inner { text-align: center; max-width: 760px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; margin-bottom: 16px; }
.cta-inner > p { color: var(--text-weak); font-size: 1.05rem; margin-bottom: 34px; }
.sub-form {
  display: flex;
  gap: 10px;
  max-width: 540px;
  margin: 0 auto;
  background: rgba(11, 15, 26, .65);
  border: 1px solid var(--border-light);
  padding: 8px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.sub-form input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--text);
  font-size: 14px;
  padding: 10px 16px;
  font-family: inherit;
}
.sub-form input::placeholder { color: var(--text-mute); }
.sub-form .btn { border-radius: 999px; white-space: nowrap; padding: 12px 26px; }

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo { font-size: 1.25rem; }
.footer-brand p { color: var(--text-weak); font-size: 14px; margin-top: 16px; max-width: 340px; }
.footer-title { font-weight: 700; margin-bottom: 16px; font-size: 15px; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: var(--text-weak); font-size: 14px; transition: color var(--transition); }
.footer-nav a:hover { color: var(--primary-soft); }
.footer-info ul li { color: var(--text-weak); font-size: 14px; margin-bottom: 10px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  text-align: center;
  color: var(--text-mute);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: 1fr 1fr; }
  .topic-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .latest-wrap { grid-template-columns: 1fr; }
  .side-card { position: static; }
}
@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: 78%;
    max-width: 320px;
    height: calc(100vh - 72px);
    background: rgba(13, 17, 30, .97);
    flex-direction: column;
    justify-content: flex-start;
    padding: 48px 32px;
    gap: 28px;
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform .3s ease;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; margin-top: -40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .faq-grid { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .page-banner { padding: 84px 0 120px; }
  .banner-actions { flex-direction: column; align-items: flex-start; }
  .section-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .topic-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .sub-form { flex-direction: column; border-radius: 18px; }
  .sub-form .btn { width: 100%; }
  .stat-num { font-size: 1.6rem; }
}