/* roulang page: index */
:root {
  --bg-primary: #071023;
  --bg-deep: #050D1F;
  --brand-blue: #0B2A5B;
  --accent-cyan: #00E0B0;
  --accent-blue: #1E5EFF;
  --gold: #F5B70A;
  --text-main: rgba(255, 255, 255, 0.92);
  --text-sub: rgba(255, 255, 255, 0.64);
  --text-weak: rgba(255, 255, 255, 0.40);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-lighter: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-glow: inset 0 1px 0 rgba(255, 255, 255, 0.10);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-nav: 100px;
  --radius-tag: 999px;
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 20px rgba(0, 224, 176, 0.35), 0 8px 24px rgba(0, 224, 176, 0.18);
  --shadow-glow-hover: 0 0 28px rgba(0, 224, 176, 0.50), 0 8px 30px rgba(0, 224, 176, 0.25);
  --section-gap: 72px;
  --section-gap-mobile: 48px;
  --container-pad: 20px;
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'HarmonyOS Sans SC', 'Noto Sans SC', sans-serif;
  --font-num: 'Inter', 'DIN Alternate', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; outline: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; outline: none; }
ul { list-style: none; }
input, textarea { font-family: inherit; outline: none; }
h1, h2, h3, h4, h5 { font-weight: 600; line-height: 1.4; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
  border-radius: 6px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--container-pad); position: relative; z-index: 1; }
.section { padding: var(--section-gap) 0; position: relative; }
.section-title { font-size: clamp(1.25rem, 2.8vw, 1.75rem); margin-bottom: 20px; color: var(--text-main); text-align: center; }
.section-subtitle { text-align: center; color: var(--text-sub); font-size: 0.95rem; max-width: 600px; margin: 0 auto 40px; }
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,224,176,0.3), transparent);
  border: none;
  margin: 0;
}
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.35;
  z-index: 0;
}
.glow-orb.cyan { background: rgba(0,224,176,0.45); }
.glow-orb.blue { background: rgba(30,94,255,0.4); }

/* ===== NAVIGATION ===== */
.nav-wrapper { position: fixed; top: 12px; left: 50%; transform: translateX(-50%); width: min(1040px, calc(100% - 24px)); z-index: 1000; }
.nav-bar {
  display: flex; align-items: center; justify-content: space-between;
  height: 58px; padding: 0 18px 0 24px;
  border-radius: var(--radius-nav);
  background: rgba(8, 18, 40, 0.62);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}
.nav-bar.scrolled {
  background: rgba(6, 14, 33, 0.85);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}
.nav-logo { display: flex; align-items: center; font-size: 1.1rem; font-weight: 700; color: var(--text-main); letter-spacing: 0.5px; flex-shrink: 0; }
.nav-logo .logo-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-cyan); margin-right: 8px;
  box-shadow: 0 0 10px rgba(0, 224, 176, 0.6);
}
.nav-menu { display: flex; align-items: center; gap: 6px; flex: 1; margin-left: 24px; }
.nav-menu a {
  display: inline-block; padding: 7px 14px; border-radius: var(--radius-tag);
  font-size: 0.88rem; color: var(--text-sub); transition: all 0.25s ease; white-space: nowrap;
}
.nav-menu a:hover { color: var(--accent-cyan); }
.nav-menu a.active {
  color: var(--accent-cyan);
  background: rgba(0, 224, 176, 0.15);
  font-weight: 500;
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px; padding: 0 20px; border-radius: var(--radius-tag); flex-shrink: 0;
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  color: #fff; font-size: 0.85rem; font-weight: 600;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}
.nav-cta:hover { box-shadow: var(--shadow-glow-hover); transform: translateY(-1px); }
.nav-cta:active { transform: translateY(0); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 10px; z-index: 1002; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all 0.3s ease; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed; top: 82px; left: 12px; right: 12px; z-index: 999;
  background: rgba(8, 18, 40, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 20px;
  opacity: 0; visibility: hidden; transform: translateY(-10px);
  transition: all 0.3s ease;
  display: flex; flex-direction: column; gap: 4px;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-menu a {
  padding: 12px 16px; border-radius: 12px; font-size: 0.95rem; color: var(--text-sub); transition: all 0.2s ease;
}
.mobile-menu a:hover, .mobile-menu a.active { color: var(--accent-cyan); background: rgba(0,224,176,0.08); }
.mobile-menu .mobile-cta {
  margin-top: 12px; text-align: center;
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  color: #fff; border-radius: var(--radius-btn); font-weight: 600; padding: 12px 16px;
}

/* ===== HERO ===== */
.hero { padding: 150px 0 70px; position: relative; overflow: hidden; }
.hero .glow-orb.cyan { width: 420px; height: 420px; top: 10%; right: 5%; }
.hero .glow-orb.blue { width: 350px; height: 350px; bottom: 10%; left: -80px; opacity: 0.25; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: var(--radius-tag);
  background: rgba(0, 224, 176, 0.1);
  border: 1px solid rgba(0, 224, 176, 0.25);
  color: var(--accent-cyan); font-size: 0.78rem; font-weight: 500; margin-bottom: 22px;
}
.hero-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-cyan); box-shadow: 0 0 8px rgba(0,224,176,0.8); }
.hero h1 { font-size: clamp(1.7rem, 4.2vw, 2.6rem); font-weight: 700; line-height: 1.35; margin-bottom: 18px; color: #fff; letter-spacing: 0.3px; }
.hero h1 .grad-text {
  background: linear-gradient(90deg, #00E0B0, #00B0F0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}
.hero-desc { font-size: 1rem; color: var(--text-sub); line-height: 1.8; margin-bottom: 32px; max-width: 520px; }
.hero-btns { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 56px; padding: 0 34px; border-radius: var(--radius-btn);
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  color: #fff; font-size: 0.95rem; font-weight: 600;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}
.btn-primary:hover { box-shadow: var(--shadow-glow-hover); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 56px; padding: 0 34px; border-radius: var(--radius-btn);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  color: #7FE8D0; font-size: 0.95rem; font-weight: 500;
  transition: all 0.3s ease; backdrop-filter: blur(8px);
}
.btn-secondary:hover { border-color: rgba(0,224,176,0.5); background: rgba(255,255,255,0.08); color: #A5F5E0; transform: translateY(-2px); }
.hero-trust { display: flex; gap: 28px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; color: var(--text-sub); font-size: 0.85rem; }
.trust-item i { color: var(--accent-cyan); font-size: 1rem; }
.hero-visual { position: relative; }
.hero-visual .img-wrap {
  position: relative; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 224, 176, 0.15);
}
.hero-visual .img-wrap img { width: 100%; height: 420px; object-fit: cover; }
.hero-visual .img-wrap::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,16,35,0) 30%, rgba(7,16,35,0.55) 100%);
}
.hero-visual-tag {
  position: absolute; bottom: 20px; left: 20px; z-index: 2;
  padding: 6px 14px; border-radius: var(--radius-tag);
  background: rgba(5, 13, 31, 0.65);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0,224,176,0.2);
  color: var(--accent-cyan); font-size: 0.78rem;
}
.wave-divider { display: block; width: 100%; height: 60px; position: relative; z-index: 1; }

/* ===== VALUE CARDS ===== */
.value-section { position: relative; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 10px; }
.value-card {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.35s ease;
}
.value-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 224, 176, 0.4);
  box-shadow: var(--shadow-card-hover), 0 0 20px rgba(0, 224, 176, 0.1);
}
.value-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(0,224,176,0.15), rgba(30,94,255,0.15));
  color: var(--accent-cyan); font-size: 1.3rem;
  margin-bottom: 20px; border: 1px solid rgba(0,224,176,0.2);
}
.value-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.value-card p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.7; }

/* ===== CAROUSEL ===== */
.carousel-section { background: var(--bg-deep); position: relative; overflow: hidden; }
.carousel-section .glow-orb.cyan { width: 300px; height: 300px; top: 20%; left: 10%; opacity: 0.2; }
.carousel-wrap { position: relative; max-width: 1100px; margin: 0 auto; padding: 0 12px; }
.carousel-viewport { overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.carousel-viewport::-webkit-scrollbar { display: none; }
.carousel-track { display: flex; gap: 20px; padding: 10px 4px; }
.carousel-slide { flex: 0 0 calc((100% - 40px) / 3); scroll-snap-align: start; }
.carousel-slide .slide-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 14px;
  transition: all 0.3s ease; backdrop-filter: blur(10px);
}
.carousel-slide .slide-card:hover { border-color: rgba(0,224,176,0.3); }
.carousel-slide .slide-card img { width: 100%; height: 170px; object-fit: cover; border-radius: 10px; margin-bottom: 14px; }
.carousel-slide .slide-card p { font-size: 0.85rem; color: var(--text-sub); text-align: center; padding: 0 4px 6px; }
.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(8, 18, 40, 0.7);
  border: 1px solid var(--glass-border);
  color: var(--text-main); font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s ease; z-index: 5; backdrop-filter: blur(8px);
}
.carousel-arrow:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); box-shadow: 0 0 15px rgba(0,224,176,0.2); }
.carousel-arrow.prev { left: -12px; }
.carousel-arrow.next { right: -12px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 22px; }
.carousel-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.25); transition: all 0.3s ease; cursor: pointer; }
.carousel-dot:hover { background: rgba(255,255,255,0.5); }
.carousel-dot.active { background: var(--accent-cyan); width: 24px; border-radius: 4px; box-shadow: 0 0 8px rgba(0,224,176,0.5); }

/* ===== SYSTEM REQ ===== */
.sysreq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; max-width: 960px; margin: 0 auto; }
.sysreq-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}
.sysreq-card:hover { box-shadow: var(--shadow-card-hover); }
.sysreq-head { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.sysreq-icon {
  width: 50px; height: 50px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,224,176,0.2), rgba(30,94,255,0.2));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.4rem;
  border: 1px solid rgba(0,224,176,0.25);
}
.sysreq-head h3 { font-size: 1.15rem; }
.sysreq-head span { font-size: 0.8rem; color: var(--text-weak); }
.sysreq-block { margin-bottom: 22px; }
.sysreq-block:last-child { margin-bottom: 0; }
.sysreq-block-title { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--accent-cyan); margin-bottom: 10px; font-weight: 500; }
.sysreq-block-title::before { content: ''; width: 14px; height: 1px; background: var(--accent-cyan); }
.sysreq-list { display: flex; flex-direction: column; gap: 8px; }
.sysreq-list li { font-size: 0.87rem; color: var(--text-sub); padding-left: 16px; position: relative; }
.sysreq-list li::before { content: '›'; position: absolute; left: 4px; color: var(--accent-cyan); }

/* ===== REVIEWS ===== */
.review-section { position: relative; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1080px; margin: 0 auto; align-items: start; }
.review-card {
  background: var(--glass-bg-lighter);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 26px;
  backdrop-filter: blur(14px);
  transition: all 0.3s ease;
}
.review-card:nth-child(2) { transform: translateY(12px); }
.review-card:hover { border-color: rgba(0,224,176,0.3); box-shadow: var(--shadow-card); }
.review-stars { display: flex; gap: 4px; margin-bottom: 16px; color: var(--gold); font-size: 0.9rem; }
.review-text { font-size: 0.9rem; line-height: 1.75; color: var(--text-sub); margin-bottom: 20px; }
.review-footer { display: flex; align-items: center; justify-content: space-between; }
.review-user { font-size: 0.82rem; color: var(--text-main); font-weight: 500; }
.review-time { font-size: 0.78rem; color: var(--text-weak); }

/* ===== DOWNLOAD ===== */
.download-section { background: var(--bg-deep); position: relative; overflow: hidden; }
.download-section .glow-orb.cyan { width: 450px; height: 450px; bottom: -100px; left: 10%; opacity: 0.2; }
.download-section .glow-orb.blue { width: 350px; height: 350px; top: -50px; right: 5%; opacity: 0.25; }
.download-inner { text-align: center; }
.download-btns { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 30px; }
.download-btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 56px; padding: 0 38px; border-radius: var(--radius-btn);
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  color: #fff; font-size: 0.95rem; font-weight: 600;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}
.download-btn:hover { box-shadow: var(--shadow-glow-hover); transform: translateY(-2px); }
.download-btn:active { transform: translateY(0); }
.download-btn .icon { font-size: 1.2rem; }
.download-qr {
  width: 140px; height: 140px;
  border: 2px dashed rgba(0, 224, 176, 0.4);
  border-radius: var(--radius-card);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  color: var(--text-sub); font-size: 0.8rem;
  background: rgba(0,224,176,0.05);
}
.download-qr:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.download-meta { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; color: var(--text-weak); font-size: 0.8rem; }
.download-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* ===== NEWS ===== */
.news-section { position: relative; }
.news-list { max-width: 960px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.news-card {
  display: flex; gap: 20px; align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: all 0.3s ease;
}
.news-card:hover { border-color: rgba(0,224,176,0.3); background: rgba(255,255,255,0.08); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.news-thumb { flex-shrink: 0; width: 120px; height: 84px; border-radius: 12px; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { flex: 1; min-width: 0; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.news-tag {
  display: inline-block; padding: 2px 12px; border-radius: var(--radius-tag);
  background: rgba(0, 224, 176, 0.12);
  border: 1px solid rgba(0, 224, 176, 0.2);
  color: var(--accent-cyan); font-size: 0.72rem;
}
.news-time { font-size: 0.75rem; color: var(--text-weak); }
.news-body h3 { font-size: 0.95rem; margin-bottom: 4px; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-body p { font-size: 0.82rem; color: var(--text-sub); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 6px; }
.news-link { font-size: 0.78rem; color: var(--accent-cyan); display: inline-flex; align-items: center; gap: 4px; transition: gap 0.2s ease; }
.news-link:hover { gap: 8px; }
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--text-sub); font-size: 0.95rem;
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius-card);
}
.empty-state .empty-icon { font-size: 2rem; margin-bottom: 12px; opacity: 0.5; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-deep); position: relative; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.active { border-color: rgba(0,224,176,0.35); box-shadow: 0 0 20px rgba(0,224,176,0.08); }
.faq-question {
  width: 100%; display: flex; align-items: center; gap: 16px;
  padding: 20px 24px; text-align: left;
  background: none; cursor: pointer;
}
.faq-q-mark {
  flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%;
  background: rgba(0, 224, 176, 0.12);
  border: 1px solid rgba(0, 224, 176, 0.25);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-cyan); font-size: 0.85rem; font-weight: 600;
}
.faq-question-text { flex: 1; font-size: 0.93rem; color: var(--text-main); font-weight: 500; }
.faq-icon {
  flex-shrink: 0; width: 22px; height: 22px; position: relative;
  transition: transform 0.3s ease;
}
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; background: var(--text-sub);
  border-radius: 2px; transition: all 0.3s ease;
}
.faq-icon::before { width: 14px; height: 2px; top: 10px; left: 4px; }
.faq-icon::after { width: 2px; height: 14px; top: 4px; left: 10px; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-item.active .faq-icon::before, .faq-item.active .faq-icon::after { background: var(--accent-cyan); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.35s ease; }
.faq-item.active .faq-answer { grid-template-rows: 1fr; }
.faq-answer-inner { overflow: hidden; }
.faq-answer-text { padding: 0 24px 22px 74px; color: var(--text-sub); font-size: 0.87rem; line-height: 1.8; }

/* ===== BOTTOM CTA ===== */
.cta-section { position: relative; overflow: hidden; }
.cta-section .glow-orb.cyan { width: 400px; height: 400px; top: -100px; right: 15%; opacity: 0.25; }
.cta-section .glow-orb.blue { width: 300px; height: 300px; bottom: -80px; left: 10%; opacity: 0.2; }
.cta-banner {
  background: linear-gradient(135deg, #0B2A5B 0%, #0A1E42 50%, #071023 100%);
  border: 1px solid rgba(0, 224, 176, 0.15);
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,224,176,0.12), transparent 60%);
}
.cta-banner h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); color: #fff; margin-bottom: 14px; }
.cta-banner p { color: var(--text-sub); font-size: 0.95rem; margin-bottom: 30px; }
.cta-banner .download-btn { height: 60px; padding: 0 48px; font-size: 1rem; }

/* ===== FOOTER ===== */
.footer { background: #040A18; border-top: 1px solid rgba(0, 224, 176, 0.15); position: relative; }
.footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,224,176,0.5), transparent);
}
.footer-main { padding: 58px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-brand .logo { font-size: 1.2rem; font-weight: 700; margin-bottom: 14px; display: inline-flex; align-items: center; gap: 8px; }
.footer-brand p { font-size: 0.83rem; color: var(--text-sub); line-height: 1.7; max-width: 300px; }
.footer-links h4 { font-size: 0.85rem; color: var(--accent-cyan); margin-bottom: 16px; font-weight: 500; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.85rem; color: var(--text-sub); transition: color 0.25s ease; }
.footer-links a:hover { color: var(--accent-cyan); }
.footer-bottom { padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06); text-align: center; }
.footer-bottom p { font-size: 0.78rem; color: var(--text-weak); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
  .value-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-grid { gap: 36px; }
}
@media (max-width: 1080px) {
  .carousel-slide { flex: 0 0 calc((100% - 20px) / 2); }
  .container { max-width: 960px; }
}
@media (max-width: 992px) {
  .nav-menu, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content { order: 1; }
  .hero-visual { order: 2; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }
  .hero-trust { justify-content: center; }
  .hero-visual .img-wrap img { height: 320px; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; gap: 20px; max-width: 560px; }
  .review-card:nth-child(2) { transform: none; }
  .sysreq-grid { grid-template-columns: 1fr; max-width: 560px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .faq-answer-text { padding-left: 24px; }
  .section { padding: var(--section-gap-mobile) 0; }
}
@media (max-width: 768px) {
  .carousel-slide { flex: 0 0 calc((100% - 10px) / 1.2); }
  .container { padding: 0 16px; }
  .hero { padding: 130px 0 50px; }
  .hero h1 { font-size: 1.6rem; }
  .hero-desc { font-size: 0.92rem; max-width: 100%; }
  .hero-btns { flex-direction: column; width: 100%; }
  .hero-btns .btn-primary, .hero-btns .btn-secondary { width: 100%; }
  .news-card { flex-direction: column; align-items: flex-start; }
  .news-thumb { width: 100%; height: 140px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-main { padding: 40px 0 24px; }
  .download-btns { flex-direction: column; align-items: center; }
  .download-meta { flex-direction: column; gap: 6px; align-items: center; }
  .cta-banner { padding: 40px 24px; }
  .cta-banner .download-btn { width: 100%; }
  .sysreq-card { padding: 24px 20px; }
  .section-divider { display: none; }
  .carousel-section .glow-orb, .hero .glow-orb, .download-section .glow-orb { opacity: 0.12; }
}
@media (max-width: 520px) {
  .value-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.15rem; }
  .section-subtitle { font-size: 0.85rem; }
  .nav-logo { font-size: 0.95rem; }
  .hero-trust { gap: 16px; }
  .trust-item { font-size: 0.78rem; }
  .review-card { padding: 20px; }
  .news-body h3 { white-space: normal; }
  .news-body p { white-space: normal; }
}
/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-content { animation: fadeInUp 0.7s ease both; }
.hero-visual { animation: fadeInUp 0.7s ease 0.15s both; }
@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
.hero-visual .img-wrap { animation: pulseGlow 4s ease-in-out infinite; }

/* roulang page: category1 */
:root{
      --bg-deep:#071023;
      --bg-darker:#050D1F;
      --brand-deep:#0B2A5B;
      --brand-blue:#1E5EFF;
      --accent-cyan:#00E0B0;
      --accent-glow:rgba(0,224,176,0.35);
      --gold:#F5B70A;
      --text-main:rgba(255,255,255,0.92);
      --text-sub:rgba(255,255,255,0.64);
      --text-weak:rgba(255,255,255,0.40);
      --glass-bg:rgba(255,255,255,0.06);
      --glass-border:rgba(255,255,255,0.12);
      --glass-highlight:inset 0 1px 0 rgba(255,255,255,0.10);
      --radius-card:16px;
      --radius-btn:12px;
      --radius-nav:100px;
      --radius-tag:999px;
      --shadow-card:0 12px 32px rgba(0,0,0,0.25);
      --shadow-hover:0 20px 40px rgba(0,0,0,0.35);
      --shadow-cyan:0 0 20px rgba(0,224,176,0.35), 0 8px 24px rgba(0,224,176,0.18);
      --font-cn:'PingFang SC','Microsoft YaHei','HarmonyOS Sans SC','Noto Sans SC',sans-serif;
      --font-num:'Inter','DIN Alternate',sans-serif;
      --container-w:1200px;
      --space-section:64px;
      --transition:all 0.3s ease;
    }
    *{margin:0;padding:0;box-sizing:border-box;}
    html{scroll-behavior:smooth;}
    body{
      font-family:var(--font-cn);
      background:var(--bg-deep);
      color:var(--text-main);
      line-height:1.75;
      overflow-x:hidden;
      position:relative;
    }
    body::before{
      content:'';
      position:fixed;
      inset:0;
      background-image:linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                       linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size:60px 60px;
      pointer-events:none;
      z-index:0;
    }
    body::after{
      content:'';
      position:fixed;
      top:-10%;
      left:30%;
      width:600px;
      height:600px;
      background:radial-gradient(circle, rgba(30,94,255,0.15), transparent 60%);
      filter:blur(80px);
      pointer-events:none;
      z-index:0;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition);}
    img{max-width:100%;display:block;border-radius:12px;}
    button{font-family:var(--font-cn);cursor:pointer;}
    ul{list-style:none;padding:0;}

    .container{
      max-width:var(--container-w);
      margin:0 auto;
      padding-left:20px;
      padding-right:20px;
      position:relative;
      z-index:1;
    }
    .section{padding:var(--space-section) 0;}
    .section-title{
      font-size:clamp(1.25rem, 2.8vw, 1.75rem);
      font-weight:600;
      line-height:1.4;
      margin-bottom:20px;
      position:relative;
    }
    .section-title::before{
      content:'';
      display:inline-block;
      width:6px;
      height:22px;
      border-radius:4px;
      background:linear-gradient(180deg, var(--accent-cyan), transparent);
      margin-right:12px;
      vertical-align:middle;
    }

    /* 导航 */
    .nav-bar{
      position:fixed;
      top:12px;
      left:50%;
      transform:translateX(-50%);
      width:min(1040px, calc(100% - 24px));
      height:58px;
      background:rgba(8,18,40,0.62);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border:1px solid rgba(255,255,255,0.12);
      border-radius:var(--radius-nav);
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 24px;
      z-index:1000;
      transition:background 0.4s ease, box-shadow 0.4s ease;
    }
    .nav-bar.scrolled{
      background:rgba(6,14,32,0.85);
      box-shadow:0 8px 32px rgba(0,0,0,0.4);
    }
    .nav-logo{
      display:flex;
      align-items:center;
      font-weight:700;
      font-size:1.05rem;
      color:#fff;
      letter-spacing:0.02em;
    }
    .logo-dot{
      display:inline-block;
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--accent-cyan);
      margin-right:10px;
      box-shadow:0 0 12px rgba(0,224,176,0.6);
      animation:pulse 2s infinite;
    }
    @keyframes pulse{
      0%,100%{box-shadow:0 0 8px rgba(0,224,176,0.5);}
      50%{box-shadow:0 0 18px rgba(0,224,176,0.9);}
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
    }
    .nav-menu a{
      padding:8px 18px;
      border-radius:var(--radius-tag);
      font-size:0.92rem;
      color:var(--text-sub);
      font-weight:500;
    }
    .nav-menu a:hover{color:var(--accent-cyan);}
    .nav-menu a.active{
      color:var(--accent-cyan);
      background:rgba(0,224,176,0.15);
      font-weight:600;
    }
    .nav-cta{
      background:linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
      color:#fff;
      padding:10px 26px;
      border-radius:var(--radius-btn);
      font-weight:600;
      font-size:0.9rem;
      box-shadow:0 0 16px rgba(0,224,176,0.25);
      transition:var(--transition);
    }
    .nav-cta:hover{
      box-shadow:0 0 28px rgba(0,224,176,0.45);
      transform:translateY(-2px);
    }
    .hamburger{
      display:none;
      background:transparent;
      border:none;
      width:42px;
      height:42px;
      flex-direction:column;
      justify-content:center;
      align-items:center;
      gap:5px;
      border-radius:12px;
    }
    .hamburger span{
      display:block;
      width:22px;
      height:2px;
      background:#fff;
      border-radius:2px;
      transition:var(--transition);
    }
    .hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
    .hamburger.active span:nth-child(2){opacity:0;}
    .hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
    .mobile-menu{
      display:none;
      position:fixed;
      top:80px;
      left:50%;
      transform:translateX(-50%);
      width:calc(100% - 24px);
      max-width:400px;
      background:rgba(8,18,40,0.92);
      backdrop-filter:blur(20px);
      border:1px solid rgba(255,255,255,0.12);
      border-radius:24px;
      padding:20px;
      z-index:999;
      flex-direction:column;
      gap:8px;
    }
    .mobile-menu.show{display:flex;}
    .mobile-menu a{
      display:block;
      padding:14px 20px;
      border-radius:14px;
      color:var(--text-sub);
      font-weight:500;
    }
    .mobile-menu a:hover,.mobile-menu a.active{color:var(--accent-cyan);background:rgba(0,224,176,0.1);}

    /* 页头Banner */
    .page-banner{
      position:relative;
      padding:140px 0 70px;
      background:linear-gradient(135deg, rgba(11,42,91,0.9), rgba(7,16,35,0.95)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-bottom:1px solid rgba(255,255,255,0.08);
      overflow:hidden;
    }
    .page-banner::after{
      content:'';
      position:absolute;
      bottom:-1px;
      left:0;
      right:0;
      height:80px;
      background:linear-gradient(180deg, transparent, var(--bg-deep));
      z-index:1;
    }
    .page-banner-inner{
      position:relative;
      z-index:2;
      text-align:center;
    }
    .page-banner .subtitle-cyan{
      display:inline-block;
      padding:6px 18px;
      border-radius:var(--radius-tag);
      background:rgba(0,224,176,0.12);
      color:var(--accent-cyan);
      font-size:0.85rem;
      font-weight:500;
      letter-spacing:0.03em;
      margin-bottom:20px;
    }
    .page-banner h1{
      font-size:clamp(1.7rem, 4.5vw, 2.6rem);
      font-weight:700;
      line-height:1.3;
      margin-bottom:18px;
      color:#fff;
    }
    .page-banner .banner-desc{
      max-width:720px;
      margin:0 auto 28px;
      color:var(--text-sub);
      font-size:1rem;
      line-height:1.8;
    }
    .page-banner .breadcrumb{
      display:flex;
      justify-content:center;
      gap:10px;
      font-size:0.85rem;
      color:var(--text-weak);
    }
    .breadcrumb a:hover{color:var(--accent-cyan);}

    /* 分类内容主体 */
    .category-main{
      padding:60px 0 80px;
      position:relative;
      z-index:2;
    }
    .category-layout{
      display:grid;
      grid-template-columns:1fr 380px;
      gap:36px;
      align-items:start;
    }
    .content-left{
      min-width:0;
    }
    .content-card{
      background:var(--glass-bg);
      border:1px solid var(--glass-border);
      border-radius:var(--radius-card);
      padding:32px;
      box-shadow:var(--shadow-card);
      backdrop-filter:blur(14px);
      margin-bottom:28px;
    }
    .content-card h2{
      font-size:1.4rem;
      font-weight:600;
      margin-bottom:16px;
      line-height:1.4;
      color:#fff;
    }
    .content-card h3{
      font-size:1.1rem;
      font-weight:600;
      margin-bottom:12px;
      color:#fff;
    }
    .content-card p{
      color:var(--text-sub);
      margin-bottom:16px;
      line-height:1.8;
      font-size:0.95rem;
    }
    .content-card .highlight{
      color:var(--accent-cyan);
      font-weight:500;
    }
    .feature-list{
      margin:20px 0;
    }
    .feature-list li{
      position:relative;
      padding-left:24px;
      color:var(--text-sub);
      margin-bottom:12px;
      line-height:1.7;
    }
    .feature-list li::before{
      content:'✓';
      position:absolute;
      left:0;
      color:var(--accent-cyan);
      font-weight:700;
    }
    .feature-compare{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
      margin:24px 0;
    }
    .compare-item{
      background:rgba(255,255,255,0.04);
      border:1px solid rgba(255,255,255,0.08);
      border-radius:14px;
      padding:20px;
      text-align:center;
    }
    .compare-item i{
      font-size:2rem;
      color:var(--accent-cyan);
      margin-bottom:12px;
      display:block;
    }
    .compare-item h4{
      color:#fff;
      font-size:0.95rem;
      font-weight:600;
      margin-bottom:8px;
    }
    .compare-item p{
      font-size:0.85rem;
      color:var(--text-sub);
      margin-bottom:0;
    }
    .img-block{
      border-radius:16px;
      overflow:hidden;
      margin:24px 0;
      box-shadow:var(--shadow-card);
      position:relative;
    }
    .img-block img{
      width:100%;
      height:auto;
      min-height:200px;
      object-fit:cover;
    }
    .img-block .img-caption{
      position:absolute;
      bottom:16px;
      left:16px;
      background:rgba(7,16,35,0.8);
      backdrop-filter:blur(10px);
      border:1px solid rgba(255,255,255,0.12);
      border-radius:10px;
      padding:8px 16px;
      font-size:0.85rem;
      color:rgba(255,255,255,0.9);
    }

    /* 侧边栏 */
    .sidebar{
      position:sticky;
      top:90px;
      display:flex;
      flex-direction:column;
      gap:24px;
    }
    .side-card{
      background:var(--glass-bg);
      border:1px solid var(--glass-border);
      border-radius:var(--radius-card);
      padding:26px;
      backdrop-filter:blur(14px);
      box-shadow:var(--shadow-card);
    }
    .side-card:nth-child(2){
      margin-top:12px;
    }
    .side-card h3{
      font-size:1rem;
      font-weight:600;
      margin-bottom:18px;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .side-card h3 i{
      color:var(--accent-cyan);
      font-size:1.1rem;
    }
    .side-list li{
      margin-bottom:4px;
    }
    .side-list a{
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 14px;
      border-radius:12px;
      color:var(--text-sub);
      font-size:0.9rem;
      transition:var(--transition);
    }
    .side-list a:hover{
      background:rgba(0,224,176,0.08);
      color:var(--accent-cyan);
      transform:translateX(4px);
    }
    .side-list a .fa-chevron-right{
      font-size:0.75rem;
      color:var(--text-weak);
      margin-left:auto;
    }
    .side-list a:hover .fa-chevron-right{
      color:var(--accent-cyan);
    }
    .side-qa-item{
      padding:14px 0;
      border-bottom:1px solid rgba(255,255,255,0.06);
    }
    .side-qa-item:last-child{border-bottom:none;padding-bottom:0;}
    .side-qa-item .q{
      color:#fff;
      font-weight:500;
      font-size:0.9rem;
      margin-bottom:6px;
    }
    .side-qa-item .a{
      color:var(--text-sub);
      font-size:0.85rem;
      line-height:1.6;
    }

    /* CTA 横幅 */
    .cta-banner{
      background:linear-gradient(135deg, rgba(0,224,176,0.12), rgba(30,94,255,0.08)), var(--glass-bg);
      border:1px solid rgba(0,224,176,0.2);
      border-radius:var(--radius-card);
      padding:28px 30px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      margin-top:40px;
      backdrop-filter:blur(14px);
    }
    .cta-banner p{
      color:rgba(255,255,255,0.9);
      font-size:0.95rem;
      font-weight:500;
      flex:1;
      min-width:220px;
    }
    .btn-cyan{
      background:linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
      color:#fff;
      border:none;
      padding:14px 32px;
      border-radius:var(--radius-btn);
      font-size:0.95rem;
      font-weight:600;
      cursor:pointer;
      box-shadow:var(--shadow-cyan);
      transition:var(--transition);
      display:inline-flex;
      align-items:center;
      gap:8px;
      white-space:nowrap;
    }
    .btn-cyan:hover{
      box-shadow:0 0 28px rgba(0,224,176,0.5), 0 10px 30px rgba(0,224,176,0.25);
      transform:translateY(-2px);
    }
    .btn-cyan:focus-visible{
      outline:2px solid var(--accent-cyan);
      outline-offset:2px;
    }
    .btn-cyan:active{
      transform:translateY(0);
      box-shadow:0 0 12px rgba(0,224,176,0.3);
    }

    /* 数据统计条 */
    .stat-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:20px;
      margin-top:30px;
    }
    .stat-item{
      text-align:center;
      background:var(--glass-bg);
      border:1px solid var(--glass-border);
      border-radius:14px;
      padding:20px 12px;
    }
    .stat-item .num{
      font-size:1.6rem;
      font-weight:700;
      color:var(--accent-cyan);
      font-family:var(--font-num);
    }
    .stat-item .label{
      font-size:0.82rem;
      color:var(--text-sub);
      margin-top:4px;
    }

    /* 页脚 */
    .footer{
      background:var(--bg-darker);
      position:relative;
      z-index:2;
      border-top:1px solid rgba(0,224,176,0.3);
      padding:60px 0 0;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:2fr 1fr 1fr;
      gap:40px;
      padding-bottom:40px;
    }
    .footer-brand .logo{
      display:flex;
      align-items:center;
      font-size:1.1rem;
      font-weight:700;
      margin-bottom:16px;
      color:#fff;
    }
    .footer-brand p{
      color:var(--text-sub);
      font-size:0.88rem;
      line-height:1.7;
      max-width:340px;
    }
    .footer-links h4{
      color:var(--accent-cyan);
      font-size:0.95rem;
      font-weight:600;
      margin-bottom:18px;
    }
    .footer-links ul li{
      margin-bottom:10px;
    }
    .footer-links ul a{
      color:var(--text-sub);
      font-size:0.88rem;
    }
    .footer-links ul a:hover{
      color:var(--accent-cyan);
      padding-left:6px;
    }
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,0.06);
      padding:20px 0;
      text-align:center;
    }
    .footer-bottom p{
      color:var(--text-weak);
      font-size:0.82rem;
    }

    /* 响应式 */
    @media (max-width:1199px){
      .category-layout{
        grid-template-columns:1fr 320px;
        gap:28px;
      }
      .stat-strip{grid-template-columns:repeat(2,1fr);}
    }
    @media (max-width:991px){
      .category-layout{
        grid-template-columns:1fr;
      }
      .sidebar{
        position:static;
        flex-direction:row;
        flex-wrap:wrap;
        gap:20px;
      }
      .side-card{
        flex:1;
        min-width:260px;
      }
      .side-card:nth-child(2){margin-top:0;}
      .nav-menu{display:none;}
      .nav-cta{display:none;}
      .hamburger{display:flex;}
      .feature-compare{grid-template-columns:1fr;}
    }
    @media (max-width:767px){
      :root{--space-section:40px;}
      .container{padding-left:16px;padding-right:16px;}
      .page-banner{padding:110px 0 50px;}
      .content-card{padding:22px;}
      .stat-strip{grid-template-columns:1fr 1fr;gap:12px;}
      .stat-item .num{font-size:1.3rem;}
      .cta-banner{flex-direction:column;text-align:center;padding:24px 20px;}
      .cta-banner p{text-align:center;}
      .footer-grid{grid-template-columns:1fr;gap:30px;}
      .feature-compare{grid-template-columns:1fr;}
    }
    @media (max-width:520px){
      .stat-strip{grid-template-columns:1fr;}
      .nav-bar{padding:0 16px;height:54px;}
      .nav-logo{font-size:0.92rem;}
      .nav-logo .logo-dot{width:8px;height:8px;margin-right:8px;}
      .content-card{padding:18px;}
      .content-card h2{font-size:1.2rem;}
    }
    @media (prefers-reduced-motion:reduce){
      *{animation:none!important;transition:none!important;}
    }

/* roulang page: article */
:root {
  --bg-deep: #071023;
  --bg-darker: #050D1F;
  --brand-blue: #0B2A5B;
  --brand-blue-bright: #1E5EFF;
  --accent-cyan: #00E0B0;
  --accent-blue: #00B0F0;
  --accent-gold: #F5B70A;
  --text-main: rgba(255, 255, 255, 0.92);
  --text-sub: rgba(255, 255, 255, 0.64);
  --text-weak: rgba(255, 255, 255, 0.40);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-highlight: rgba(255, 255, 255, 0.10);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 100px;
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 20px 40px rgba(0, 0, 0, 0.35);
  --shadow-btn: 0 0 20px rgba(0, 224, 176, 0.35), 0 8px 24px rgba(0, 224, 176, 0.18);
  --font-main: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "DIN Alternate", sans-serif;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

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

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

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

/* 背景装饰 */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
}

.bg-glow-1 {
  width: 480px;
  height: 480px;
  background: rgba(0, 224, 176, 0.055);
  top: -120px;
  right: -80px;
}

.bg-glow-2 {
  width: 420px;
  height: 420px;
  background: rgba(30, 94, 255, 0.07);
  bottom: 10%;
  left: -120px;
}

/* 导航 */
.nav-bar {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: min(1040px, calc(100% - 24px));
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px 0 22px;
  border-radius: 100px;
  background: rgba(8, 18, 40, 0.62);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.nav-bar.scrolled {
  background: rgba(5, 13, 31, 0.86);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--text-main);
}

.logo-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 224, 176, 0.8);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-menu a:hover {
  color: var(--accent-cyan);
  background: rgba(0, 224, 176, 0.08);
}

.nav-menu a.active {
  color: var(--accent-cyan);
  background: rgba(0, 224, 176, 0.15);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #04101a;
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  box-shadow: 0 0 16px rgba(0, 224, 176, 0.3);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  box-shadow: 0 0 26px rgba(0, 224, 176, 0.5);
  transform: translateY(-1px);
}

.nav-cta:active {
  transform: translateY(0) scale(0.97);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单浮层 */
.mobile-menu {
  position: fixed;
  top: 82px;
  left: 50%;
  transform: translateX(-50%) translateY(-12px);
  z-index: 999;
  width: min(1040px, calc(100% - 24px));
  border-radius: 24px;
  padding: 18px;
  background: rgba(8, 18, 40, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mobile-menu a {
  display: block;
  padding: 13px 16px;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.mobile-menu a:hover {
  background: rgba(0, 224, 176, 0.1);
  color: var(--accent-cyan);
}

.mobile-menu a.active {
  color: var(--accent-cyan);
  background: rgba(0, 224, 176, 0.14);
}

.mobile-menu .mm-cta {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 46px;
  border-radius: 14px;
  font-weight: 600;
  color: #04101a;
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
}

/* 面包屑 + 文章 Banner */
.article-banner {
  position: relative;
  padding: 138px 0 36px;
  background: url('/assets/images/backpic/back-1.webp') center 28% / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 16, 35, 0.74) 0%, rgba(7, 16, 35, 0.9) 100%);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-sub);
  position: relative;
  z-index: 1;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.58);
  transition: var(--transition);
}

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

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
}

.breadcrumb .current {
  color: rgba(255, 255, 255, 0.85);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 380px;
}

/* 文章主体 */
.article-main {
  position: relative;
  padding: 56px 0 0;
  z-index: 2;
}

.article-layout {
  max-width: 900px;
  margin: 0 auto;
}

.article-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  padding: 44px 48px 48px;
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(0, 224, 176, 0.02) 100%);
}

.article-header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.article-header::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
}

.article-header h1 {
  font-size: clamp(1.55rem, 3.2vw, 2.1rem);
  font-weight: 700;
  line-height: 1.36;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--text-weak);
  font-family: var(--font-num);
}

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

.meta-item i {
  color: rgba(0, 224, 176, 0.7);
  font-size: 0.8rem;
}

/* 正文排版 */
.article-body {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  word-break: break-word;
}

.article-body p {
  margin-bottom: 1.25em;
}

.article-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 40px 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--accent-cyan);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 1.16rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  margin: 32px 0 12px;
  line-height: 1.5;
}

.article-body img {
  border-radius: 12px;
  margin: 24px 0;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

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

.article-body ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.82);
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0.7;
}

.article-body ol {
  counter-reset: art-ol;
}

.article-body ol li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 10px;
  counter-increment: art-ol;
  color: rgba(255, 255, 255, 0.82);
}

.article-body ol li::before {
  content: counter(art-ol);
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 224, 176, 0.14);
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: center;
  line-height: 20px;
  font-family: var(--font-num);
}

.article-body blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  background: rgba(0, 224, 176, 0.06);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 4px 12px 12px 4px;
  color: rgba(255, 255, 255, 0.78);
  font-style: normal;
}

.article-body blockquote p {
  margin-bottom: 0.4em;
}

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

.article-body a {
  color: var(--accent-cyan);
  border-bottom: 1px solid rgba(0, 224, 176, 0.3);
}

.article-body a:hover {
  color: #fff;
  border-bottom-color: var(--accent-cyan);
}

.article-body strong {
  color: rgba(255, 255, 255, 0.94);
  font-weight: 600;
}

/* 未找到 */
.not-found {
  text-align: center;
  padding: 60px 20px;
}

.not-found .nf-icon {
  font-size: 3rem;
  margin-bottom: 18px;
  color: var(--text-weak);
}

.not-found h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}

.not-found p {
  color: var(--text-sub);
  margin-bottom: 26px;
}

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-btn);
  font-size: 0.96rem;
  font-weight: 600;
  color: #04101a;
  background: linear-gradient(135deg, #00E0B0 0%, #00B0F0 100%);
  box-shadow: var(--shadow-btn);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  box-shadow: 0 0 28px rgba(0, 224, 176, 0.5), 0 10px 32px rgba(0, 224, 176, 0.22);
  transform: translateY(-2px);
  color: #04101a;
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-outline:hover {
  border-color: rgba(0, 224, 176, 0.7);
  color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.05);
}

.btn-outline:active {
  transform: scale(0.97);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

/* 相关推荐 */
.related-section {
  margin-top: 48px;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.section-head::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 224, 176, 0.25), transparent);
}

.section-head h2 {
  font-size: 1.28rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 224, 176, 0.35);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.related-card img {
  width: 100%;
  height: 132px;
  object-fit: cover;
  transition: var(--transition);
}

.related-card:hover img {
  transform: scale(1.03);
}

.related-info {
  padding: 16px 18px 18px;
}

.related-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.related-info p {
  font-size: 0.82rem;
  color: var(--text-sub);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover .related-info h3 {
  color: var(--accent-cyan);
}

/* 返回 */
.article-back {
  margin-top: 40px;
  text-align: center;
}

/* CTA 横幅 */
.article-cta {
  position: relative;
  padding: 64px 0 80px;
  z-index: 2;
}

.cta-glass {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 30px 38px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.cta-glass::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(0, 224, 176, 0.08);
  filter: blur(60px);
}

.cta-glass p {
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.5;
}

.cta-glass p span {
  color: var(--accent-cyan);
}

.cta-glass .btn-primary {
  height: 54px;
  padding: 0 36px;
  font-size: 1rem;
  flex-shrink: 0;
}

/* 页脚 */
.footer {
  position: relative;
  z-index: 2;
  background: var(--bg-darker);
  border-top: 1px solid transparent;
  border-image: linear-gradient(90deg, transparent, rgba(0, 224, 176, 0.3), transparent) 1;
  padding: 64px 0 28px;
}

.footer-main {
  padding-bottom: 40px;
}

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

.footer-brand .logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 300px;
}

.footer-links h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links ul li a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-weak);
  font-family: var(--font-num);
}

/* 响应式 */
@media (max-width: 1199px) {
  .container {
    width: 960px;
  }
}

@media (max-width: 991px) {
  .nav-menu {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .container {
    width: 100%;
    padding: 0 20px;
  }
  .article-card {
    padding: 32px 28px 36px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .article-banner {
    padding: 118px 0 28px;
  }
  .article-main {
    padding: 36px 0 0;
  }
  .article-card {
    padding: 24px 18px 28px;
    border-radius: 14px;
  }
  .article-header h1 {
    font-size: 1.3rem;
  }
  .article-meta {
    gap: 10px;
    font-size: 0.78rem;
  }
  .article-body {
    font-size: 0.95rem;
    line-height: 1.75;
  }
  .article-body h2 {
    font-size: 1.16rem;
    margin: 28px 0 14px;
  }
  .article-body h3 {
    font-size: 1.02rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-card {
    flex-direction: row;
    align-items: center;
  }
  .related-card img {
    width: 110px;
    height: 88px;
    flex-shrink: 0;
  }
  .related-info {
    padding: 12px 14px;
  }
  .related-info h3 {
    min-height: 0;
    font-size: 0.9rem;
  }
  .related-info p {
    display: none;
  }
  .cta-glass {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 22px;
  }
  .cta-glass p {
    font-size: 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-back {
    margin-top: 28px;
  }
  .breadcrumb .current {
    max-width: 220px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .mobile-menu {
    width: calc(100% - 32px);
  }
  .article-header {
    padding-bottom: 20px;
  }
  .article-header h1 {
    font-size: 1.18rem;
  }
  .article-body blockquote {
    padding: 14px 16px;
  }
  .btn-primary {
    height: 44px;
    padding: 0 24px;
    font-size: 0.9rem;
  }
  .btn-outline {
    height: 42px;
    padding: 0 22px;
    font-size: 0.88rem;
  }
}

/* roulang page: category2 */
:root{
  --bg-deep:#071023;
  --bg-darker:#050D1F;
  --primary-blue:#0B2A5B;
  --bright-blue:#1E5EFF;
  --accent-cyan:#00E0B0;
  --accent-blue:#00B0F0;
  --gold:#F5B70A;
  --text-main:rgba(255,255,255,0.92);
  --text-secondary:rgba(255,255,255,0.64);
  --text-weak:rgba(255,255,255,0.40);
  --glass-bg:rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.12);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-nav:100px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.25);
  --shadow-card-hover:0 20px 40px rgba(0,0,0,0.35);
  --glow-primary:0 0 20px rgba(0,224,176,0.35),0 8px 24px rgba(0,224,176,0.18);
  --transition:all .3s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",sans-serif;
  background:var(--bg-deep);
  color:var(--text-main);
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:'';
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
ul{list-style:none}
button{border:none;background:none;cursor:pointer;font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2}
.glow{position:fixed;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:1}
.glow-1{width:300px;height:300px;background:rgba(0,224,176,0.08);top:10%;right:4%}
.glow-2{width:360px;height:360px;background:rgba(30,94,255,0.07);bottom:15%;left:-8%}
.glow-3{width:220px;height:220px;background:rgba(0,224,176,0.05);top:50%;left:60%}
main{position:relative;z-index:2}

/* Nav */
.nav-bar{
  position:fixed;
  top:12px;
  left:50%;
  transform:translateX(-50%);
  width:min(1040px,calc(100% - 24px));
  height:58px;
  background:rgba(8,18,40,0.62);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:100px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 8px 0 22px;
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
  z-index:1000;
  transition:var(--transition);
}
.nav-bar.scrolled{
  background:rgba(6,14,32,0.88);
  box-shadow:0 12px 40px rgba(0,0,0,0.4);
}
.nav-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:1.05rem;
  letter-spacing:0.5px;
  color:#fff;
  white-space:nowrap;
}
.logo-dot{
  display:inline-block;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent-cyan);
  box-shadow:0 0 12px rgba(0,224,176,0.7);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1;
  justify-content:center;
}
.nav-menu a{
  padding:8px 16px;
  border-radius:999px;
  font-size:0.92rem;
  color:var(--text-secondary);
  white-space:nowrap;
  transition:var(--transition);
}
.nav-menu a:hover{
  color:var(--accent-cyan);
  background:rgba(0,224,176,0.08);
}
.nav-menu a.active{
  color:var(--accent-cyan);
  background:rgba(0,224,176,0.15);
  font-weight:600;
}
.nav-cta{
  background:linear-gradient(135deg,#00E0B0 0%,#00B0F0 100%);
  color:#fff;
  font-size:0.9rem;
  font-weight:600;
  padding:9px 22px;
  border-radius:999px;
  box-shadow:0 0 16px rgba(0,224,176,0.25);
  transition:var(--transition);
  white-space:nowrap;
}
.nav-cta:hover{
  box-shadow:0 0 28px rgba(0,224,176,0.45);
  transform:translateY(-1px);
}
.nav-cta:focus-visible,.nav-menu a:focus-visible,.nav-logo:focus-visible{
  outline:2px solid var(--accent-cyan);
  outline-offset:3px;
}
.hamburger{
  display:none;
  flex-direction:column;
  gap:5px;
  padding:10px;
  border-radius:10px;
  transition:background 0.3s;
}
.hamburger span{
  width:20px;height:2px;
  background:#fff;
  border-radius:2px;
  transition:var(--transition);
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Buttons */
.btn-primary,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:0.95rem;
  font-weight:600;
  padding:14px 32px;
  border-radius:var(--radius-btn);
  transition:var(--transition);
}
.btn-primary{
  background:linear-gradient(135deg,#00E0B0 0%,#00B0F0 100%);
  color:#fff;
  box-shadow:0 0 20px rgba(0,224,176,0.35),0 8px 24px rgba(0,224,176,0.18);
}
.btn-primary:hover{
  box-shadow:0 0 28px rgba(0,224,176,0.55),0 10px 30px rgba(0,224,176,0.25);
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible,.btn-ghost:focus-visible{
  outline:2px solid var(--accent-cyan);
  outline-offset:3px;
}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,0.25);
  color:var(--accent-cyan);
  backdrop-filter:blur(4px);
}
.btn-ghost:hover{
  border-color:var(--accent-cyan);
  background:rgba(255,255,255,0.06);
}
.btn-ghost:active{transform:scale(0.98)}
.btn-lg{
  height:56px;
  padding:0 44px;
  font-size:1.05rem;
  border-radius:14px;
}
.btn-sm{padding:10px 22px;font-size:0.88rem;border-radius:10px}

/* Page Hero */
.page-hero{
  padding:150px 0 56px;
  background:linear-gradient(180deg,rgba(5,13,31,0.35),rgba(7,16,35,0.92)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid rgba(255,255,255,0.05);
  position:relative;
}
.page-hero .container{text-align:center}
.breadcrumb{
  font-size:0.82rem;
  color:var(--text-weak);
  margin-bottom:18px;
  text-align:center;
}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--accent-cyan)}
.breadcrumb span{margin:0 8px;color:var(--text-weak)}
.page-hero h1{
  font-size:clamp(1.8rem,4.2vw,2.6rem);
  font-weight:700;
  letter-spacing:0.5px;
  margin-bottom:16px;
  line-height:1.3;
}
.grad-text{
  background:linear-gradient(135deg,#00E0B0,#00B0F0);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  max-width:640px;
  margin:0 auto 30px;
  font-size:1.02rem;
  color:var(--text-secondary);
  line-height:1.8;
}
.hero-btns{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}

/* Content Layout */
.content-layout{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:36px;
  padding-top:56px;
  padding-bottom:64px;
  align-items:start;
}
.main-content{
  display:flex;
  flex-direction:column;
  gap:32px;
  min-width:0;
}

/* Glass Card */
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:28px;
  transition:var(--transition);
}
.glass-card:hover{
  border-color:rgba(0,224,176,0.35);
  box-shadow:var(--shadow-card-hover);
}

/* Guide Intro */
.guide-intro h2{
  font-size:1.35rem;
  font-weight:600;
  margin-bottom:12px;
}
.guide-intro p{
  color:var(--text-secondary);
  font-size:0.95rem;
  line-height:1.8;
  margin-bottom:18px;
}
.tag-group{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:5px 15px;
  border-radius:999px;
  font-size:0.82rem;
  color:var(--accent-cyan);
  background:rgba(0,224,176,0.1);
  border:1px solid rgba(0,224,176,0.2);
  transition:var(--transition);
}
.tag:hover{
  background:rgba(0,224,176,0.18);
  border-color:rgba(0,224,176,0.4);
}

/* Content Block */
.content-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
  align-items:center;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:16px;
  padding:24px;
  box-shadow:0 8px 24px rgba(0,0,0,0.18);
  transition:var(--transition);
}
.content-block:hover{
  border-color:rgba(0,224,176,0.3);
  box-shadow:0 16px 36px rgba(0,0,0,0.3);
}
.content-block.reverse .block-img{order:2}
.block-img{
  border-radius:14px;
  overflow:hidden;
  box-shadow:0 8px 24px rgba(0,0,0,0.3);
}
.block-img img{
  width:100%;
  height:220px;
  object-fit:cover;
  transition:transform 0.5s ease;
}
.block-img:hover img{transform:scale(1.04)}
.block-text h2{
  font-size:1.25rem;
  font-weight:600;
  margin-bottom:12px;
  line-height:1.4;
}
.block-text p{
  color:var(--text-secondary);
  font-size:0.92rem;
  line-height:1.75;
  margin-bottom:14px;
}
.block-text ul{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-bottom:16px;
}
.block-text ul li{
  position:relative;
  padding-left:20px;
  font-size:0.9rem;
  color:rgba(255,255,255,0.75);
}
.block-text ul li::before{
  content:'';
  position:absolute;
  left:0;
  top:10px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent-cyan);
  box-shadow:0 0 6px rgba(0,224,176,0.5);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent-cyan);
  font-size:0.9rem;
  font-weight:500;
  transition:gap 0.3s;
}
.link-more:hover{gap:10px;color:#00f0c4}
.link-more span{transition:transform 0.3s}

/* Steps */
.steps-section h2{
  font-size:1.35rem;
  font-weight:600;
  text-align:center;
  margin-bottom:24px;
  position:relative;
}
.steps-section h2::after{
  content:'';
  display:block;
  width:60px;
  height:2px;
  margin:12px auto 0;
  background:linear-gradient(90deg,transparent,rgba(0,224,176,0.6),transparent);
}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.step-card{
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:16px;
  padding:26px 20px;
  text-align:center;
  transition:var(--transition);
}
.step-card:hover{
  border-color:rgba(0,224,176,0.35);
  transform:translateY(-4px);
  box-shadow:0 14px 30px rgba(0,0,0,0.3);
}
.step-num{
  display:block;
  font-family:'Inter','DIN Alternate',sans-serif;
  font-size:2rem;
  font-weight:700;
  color:rgba(0,224,176,0.55);
  margin-bottom:10px;
}
.step-card h3{
  font-size:1.05rem;
  font-weight:600;
  margin-bottom:8px;
}
.step-card p{
  font-size:0.88rem;
  color:var(--text-secondary);
  line-height:1.65;
}

/* Sidebar */
.sidebar{
  display:flex;
  flex-direction:column;
  gap:24px;
  position:sticky;
  top:90px;
}
.side-card:nth-child(2){
  position:relative;
  top:0;
}
.side-card h3{
  font-size:1.08rem;
  font-weight:600;
  margin-bottom:16px;
  color:var(--accent-cyan);
  padding-left:14px;
  position:relative;
}
.side-card h3::before{
  content:'';
  position:absolute;
  left:0;
  top:2px;
  width:4px;
  height:20px;
  background:linear-gradient(180deg,var(--accent-cyan),rgba(0,224,176,0.1));
  border-radius:2px;
}
.side-links li{
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.side-links li:last-child{border-bottom:none}
.side-links a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 2px;
  font-size:0.9rem;
  color:rgba(255,255,255,0.78);
  transition:var(--transition);
}
.side-links a:hover{
  color:var(--accent-cyan);
  padding-left:6px;
}
.side-links .dot{
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent-cyan);
  flex-shrink:0;
  opacity:0.55;
}
.side-links a:hover .dot{
  opacity:1;
  box-shadow:0 0 8px rgba(0,224,176,0.6);
}

/* FAQ Mini */
.faq-mini details{
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.faq-mini details:last-child{border-bottom:none}
.faq-mini summary{
  padding:13px 0;
  cursor:pointer;
  color:rgba(255,255,255,0.85);
  font-size:0.9rem;
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  transition:color 0.3s;
  font-weight:500;
}
.faq-mini summary::-webkit-details-marker{display:none}
.faq-mini summary:hover{color:var(--accent-cyan)}
.faq-mini summary::after{
  content:'+';
  font-size:1.15rem;
  color:var(--accent-cyan);
  transition:transform 0.35s;
  margin-left:12px;
  flex-shrink:0;
}
.faq-mini details[open] summary::after{
  transform:rotate(45deg);
}
.faq-mini details p{
  padding:0 0 14px;
  color:var(--text-secondary);
  font-size:0.85rem;
  line-height:1.65;
}

/* CTA Banner */
.cta-banner{
  padding:56px 0;
  background:linear-gradient(135deg,rgba(11,42,91,0.55),rgba(5,13,31,0.85)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-top:1px solid rgba(255,255,255,0.06);
  position:relative;
  overflow:hidden;
  text-align:center;
}
.cta-banner::before{
  content:'';
  position:absolute;
  top:-40px;left:50%;
  transform:translateX(-50%);
  width:500px;height:120px;
  background:radial-gradient(ellipse,rgba(0,224,176,0.12),transparent 70%);
  pointer-events:none;
}
.cta-banner h2{
  font-size:clamp(1.3rem,3vw,1.85rem);
  font-weight:700;
  margin-bottom:10px;
}
.cta-banner p{
  color:var(--text-secondary);
  font-size:0.95rem;
  margin-bottom:26px;
}

/* Footer */
.footer{
  background:var(--bg-darker);
  border-top:1px solid rgba(255,255,255,0.06);
  padding:56px 0 24px;
  position:relative;
  z-index:2;
}
.footer::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,224,176,0.3),transparent);
}
.footer-main{margin-bottom:32px}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{
  display:inline-flex;
  align-items:center;
  font-size:1.1rem;
  font-weight:700;
  color:#fff;
  margin-bottom:12px;
}
.footer-brand p{
  font-size:0.88rem;
  color:var(--text-weak);
  line-height:1.7;
  max-width:320px;
}
.footer-links h4{
  font-size:0.95rem;
  font-weight:600;
  color:var(--accent-cyan);
  margin-bottom:16px;
}
.footer-links ul{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:0.88rem;
  color:var(--text-secondary);
  transition:var(--transition);
}
.footer-links a:hover{
  color:var(--accent-cyan);
  padding-left:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.05);
  padding-top:20px;
  text-align:center;
}
.footer-bottom p{
  font-size:0.82rem;
  color:var(--text-weak);
}

/* Focus states */
a:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent-cyan);
  outline-offset:2px;
  border-radius:4px;
}

/* Responsive */
@media (max-width:1199px){
  .nav-bar{width:min(960px,calc(100% - 24px))}
  .content-layout{grid-template-columns:1.8fr 1fr;gap:28px}
}
@media (max-width:991px){
  .content-layout{grid-template-columns:1fr}
  .sidebar{
    flex-direction:column;
    position:static;
    gap:24px;
  }
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .nav-menu{
    position:fixed;
    top:82px;
    left:16px;
    right:16px;
    background:rgba(8,18,40,0.95);
    backdrop-filter:blur(24px);
    -webkit-backdrop-filter:blur(24px);
    border:1px solid rgba(255,255,255,0.12);
    border-radius:24px;
    padding:20px;
    flex-direction:column;
    gap:6px;
    display:none;
    box-shadow:0 20px 50px rgba(0,0,0,0.5);
    z-index:999;
  }
  .nav-menu.open{
    display:flex;
  }
  .nav-menu a{
    width:100%;
    text-align:center;
    padding:13px;
    font-size:1rem;
  }
  .hamburger{
    display:flex;
    margin-left:10px;
  }
  .content-block,.content-block.reverse{
    grid-template-columns:1fr 1fr;
    gap:20px;
    padding:20px;
  }
}
@media (max-width:767px){
  .page-hero{
    padding:120px 0 40px;
  }
  .content-block,.content-block.reverse{
    grid-template-columns:1fr;
  }
  .content-block.reverse .block-img{order:0}
  .steps-grid{
    grid-template-columns:1fr;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .hero-btns{
    flex-direction:column;
    align-items:center;
  }
  .hero-btns .btn-primary,.hero-btns .btn-ghost{
    width:100%;
    max-width:280px;
  }
  .page-hero h1{
    font-size:1.65rem;
  }
  .guide-intro{
    padding:20px;
  }
  .block-img img{
    height:180px;
  }
  .cta-banner{
    padding:40px 0;
  }
  .footer-main{
    margin-bottom:20px;
  }
}
@media (max-width:520px){
  .nav-logo{
    font-size:0.85rem;
  }
  .nav-cta{
    padding:8px 14px;
    font-size:0.78rem;
  }
  .nav-bar{
    padding:0 4px 0 14px;
    height:52px;
  }
  .hamburger{
    margin-left:4px;
  }
  .content-block,.guide-intro,.side-card{
    padding:18px;
  }
  .tag{
    font-size:0.75rem;
    padding:4px 10px;
  }
  .block-text h2{
    font-size:1.1rem;
  }
  .block-text p{
    font-size:0.88rem;
  }
}