/* roulang page: index */
/* ========== Design Tokens ========== */
:root {
  --primary: #00e5a0;
  --primary-bright: #15f2b0;
  --primary-dim: rgba(0,229,160,.1);
  --accent: #ff9f2e;
  --accent-dim: rgba(255,159,46,.12);
  --bg: #10161c;
  --bg-soft: #141b22;
  --bg-card: #1a222b;
  --bg-float: #202a34;
  --text: #eef3f2;
  --text-secondary: #a7b3bd;
  --text-muted: #6f7c88;
  --border: #2b3641;
  --border-light: rgba(43,54,65,.6);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.25);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.4), 0 0 0 1px rgba(0,229,160,.08);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --radius-tag: 999px;
  --radius-icon: 12px;
  --container: 1200px;
  --space-section: 96px;
  --font-cn: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-num: 'Inter','Roboto',sans-serif;
}

/* ========== Reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; border: none; outline: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: var(--text); }
::selection { background: var(--primary); color: #07120d; }

/* ========== Container ========== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  height: 48px;
  padding: 0 24px;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
  letter-spacing: .02em;
}
.btn-primary {
  background: var(--primary);
  color: #07120d;
}
.btn-primary:hover {
  background: var(--primary-bright);
  box-shadow: 0 0 28px rgba(0,229,160,.35);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 12px rgba(0,229,160,.2);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-dim);
  border-color: var(--primary-bright);
  color: var(--primary-bright);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(1px); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { background: rgba(255,255,255,.06); color: var(--text); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; }

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(16,22,28,.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(16,22,28,.94);
  box-shadow: 0 6px 24px rgba(0,0,0,.35);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 15px;
  background: var(--primary-dim);
  transition: box-shadow .3s ease;
}
.logo:hover .logo-icon { box-shadow: 0 0 16px rgba(0,229,160,.3); }
.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}
.logo-text span {
  color: var(--primary);
  font-weight: 500;
  font-size: 14px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  transition: all .3s ease;
}
.nav-menu a {
  font-size: 15px;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
  transition: color .25s ease;
  white-space: nowrap;
}
.nav-menu a:hover { color: var(--text); }
.nav-menu a.active { color: var(--primary); }
.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0,229,160,.4);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 0 12px;
  height: 38px;
  width: 190px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,229,160,.15);
}
.search-box i { color: var(--text-muted); font-size: 13px; }
.search-box input {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 14px;
  width: 100%;
  height: 100%;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box input:focus { outline: none; }
.mobile-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  transition: all .2s ease;
  background: var(--bg-card);
}
.mobile-toggle:hover { color: var(--primary); border-color: var(--primary); }

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 148px 0 80px;
  overflow: hidden;
  background: linear-gradient(180deg, #0d1218 0%, var(--bg) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,229,160,.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .22;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg) 0%, rgba(16,22,28,.7) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 52px;
  align-items: center;
  min-height: 480px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-dim);
  border: 1px solid rgba(0,229,160,.25);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  margin-bottom: 22px;
  letter-spacing: .04em;
}
.hero-eyebrow i { font-size: 11px; }
.hero-title {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.22;
  margin-bottom: 22px;
  letter-spacing: .01em;
}
.hero-title .grad {
  background: linear-gradient(120deg, var(--primary), #6effd0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 34px;
  font-weight: 400;
  letter-spacing: .02em;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-stat-bar {
  display: flex;
  gap: 44px;
  border-top: 1px solid var(--border);
  padding-top: 30px;
  flex-wrap: wrap;
}
.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: .02em;
}
.stat-num .unit { font-size: 16px; font-weight: 500; color: var(--primary); }
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: .02em;
}
.hero-visual {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  height: 385px;
  border: 1px solid rgba(0,229,160,.3);
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
}
.hero-visual img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.hero-visual:hover img { transform: scale(1.03); }
.hero-badge {
  position: absolute;
  top: 18px; left: 18px;
  background: var(--accent);
  color: #1a130a;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: var(--radius-tag);
  box-shadow: 0 4px 16px rgba(255,159,46,.35);
  z-index: 2;
  letter-spacing: .03em;
}
.hero-visual-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 32px 20px 16px;
  background: linear-gradient(transparent, rgba(16,22,28,.9));
  font-size: 13px;
  color: var(--text-secondary);
  z-index: 2;
  text-align: right;
  letter-spacing: .03em;
}

/* ========== Section Common ========== */
.section { padding: var(--space-section) 0; position: relative; }
.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: .01em;
}
.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid rgba(0,229,160,.2);
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 16px;
  letter-spacing: .06em;
}

/* ========== Hot Grid ========== */
.hot-section { background: var(--bg); padding: var(--space-section) 0; }
.hot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.hot-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.hot-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,229,160,.25);
}
.hot-card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-float);
}
.hot-card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.hot-card:hover .hot-card-media img { transform: scale(1.05); }
.hot-card-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #1a130a;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  z-index: 2;
  letter-spacing: .03em;
  box-shadow: 0 2px 10px rgba(255,159,46,.3);
}
.hot-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.hot-card-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
  transition: color .2s ease;
}
.hot-card:hover .hot-card-body h3 { color: var(--primary); }
.hot-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hot-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: gap .2s ease, color .2s ease;
}
.hot-card-link:hover { gap: 10px; color: var(--primary-bright); }
.hot-card-link i { font-size: 12px; }

/* ========== Testimonials ========== */
.testimonial-section {
  padding: var(--space-section) 0;
  background: var(--bg-soft);
  overflow: hidden;
}
.tst-wrapper {
  position: relative;
  max-width: 1020px;
  margin: 0 auto;
}
.tst-track {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: center;
  min-height: 280px;
}
.tst-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  width: 320px;
  flex-shrink: 0;
  transition: all .4s ease;
  opacity: .55;
  transform: scale(.94);
}
.tst-card.dim-left { transform: scale(.94) translateX(12px); opacity: .45; }
.tst-card.dim-right { transform: scale(.94) translateX(-12px); opacity: .45; }
.tst-card.active {
  opacity: 1;
  transform: scale(1);
  border-color: rgba(0,229,160,.4);
  box-shadow: var(--shadow-lg);
  z-index: 2;
}
.tst-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 14px;
}
.tst-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 22px;
  min-height: 100px;
}
.tst-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.tst-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--primary-dim);
  border: 1px solid rgba(0,229,160,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.tst-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.tst-role {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
.tst-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}
.tst-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all .3s ease;
  padding: 0;
}
.tst-dot.active {
  background: var(--primary);
  width: 20px;
  border-radius: 999px;
  box-shadow: 0 0 8px rgba(0,229,160,.4);
}

/* ========== Guarantee Bar ========== */
.guarantee-section { padding: 56px 0; background: var(--bg); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.guarantee-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-card);
  transition: background .2s ease, transform .2s ease;
}
.guarantee-item:hover {
  background: var(--bg-card);
  transform: translateY(-3px);
}
.guarantee-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-icon);
  background: var(--primary-dim);
  border: 1px solid rgba(0,229,160,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}
.guarantee-info h4 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.guarantee-info span { font-size: 13px; color: var(--text-muted); }

/* ========== CTA + Login Form ========== */
.cta-section {
  position: relative;
  padding: 72px 0;
  overflow: hidden;
  background: linear-gradient(135deg, #0d1418 0%, #131c24 50%, #10161c 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,160,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,160,.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  top: -100px; right: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,229,160,.1) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta-left h2 {
  font-size: clamp(24px, 3.2vw, 34px);
  margin-bottom: 14px;
  line-height: 1.3;
}
.cta-left p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 440px;
}
.cta-left .btn { margin-top: 28px; }
.cta-login-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.cta-login-form h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.cta-login-form > p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.form-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.form-group {
  flex: 1;
  min-width: 150px;
  position: relative;
}
.form-group i {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 13px;
  pointer-events: none;
}
.form-input {
  width: 100%;
  height: 46px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 0 12px 0 34px;
  color: var(--text);
  font-size: 14px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,229,160,.15);
}
.cta-login-form .btn { flex-shrink: 0; }
.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.5;
}

/* ========== News / CMS List ========== */
.news-section { padding: var(--space-section) 0; background: var(--bg); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 26px;
  display: block;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,229,160,.25);
}
.news-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-dim);
  border: 1px solid rgba(0,229,160,.2);
  padding: 3px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
  letter-spacing: .04em;
}
.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.45;
  transition: color .2s ease;
}
.news-card:hover h3 { color: var(--primary); }
.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.news-meta i { font-size: 12px; }
.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  font-size: 15px;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
}

/* ========== FAQ ========== */
.faq-section { padding: var(--space-section) 0; background: var(--bg-soft); }
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 4px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color .2s ease;
  background: none;
  text-align: left;
  width: 100%;
  line-height: 1.5;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all .3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-dim);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 4px 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 720px;
}
.faq-item.active .faq-answer { max-height: 320px; }

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  color: var(--text);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s ease, padding-left .2s ease;
}
.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom .brand-site { color: var(--text-secondary); font-weight: 500; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .nav-menu { gap: 18px; }
  .search-box { width: 140px; }
  .hot-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .guarantee-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero-inner { gap: 32px; }
  .tst-card { width: 280px; }
  .cta-inner { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  :root { --space-section: 64px; }
  .site-header { height: auto; }
  .header-inner { height: 64px; }
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: rgba(16,22,28,.97);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform .35s ease, opacity .3s ease;
    backdrop-filter: blur(16px);
    align-items: flex-start;
    box-shadow: 0 20px 40px rgba(0,0,0,.4);
    z-index: 99;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu a {
    padding: 14px 0;
    font-size: 16px;
    width: 100%;
    border-bottom: 1px solid rgba(43,54,65,.5);
  }
  .nav-menu a:last-child { border-bottom: none; }
  .nav-menu a.active::after { display: none; }
  .mobile-menu-search {
    display: flex;
    width: 100%;
    margin: 12px 0 8px;
  }
  .header-actions .search-box { display: none; }
  .header-actions .btn-ghost { display: none; }
  .mobile-toggle { display: flex; }
  .hero { padding: 120px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { height: 260px; }
  .hero-stat-bar { gap: 24px; }
  .stat-num { font-size: 24px; }
  .hot-grid { grid-template-columns: 1fr; gap: 18px; }
  .guarantee-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .guarantee-item { padding: 12px; }
  .guarantee-icon { width: 40px; height: 40px; font-size: 15px; }
  .news-grid { grid-template-columns: 1fr; gap: 18px; }
  .tst-track { flex-direction: column; gap: 16px; }
  .tst-card { width: 100%; max-width: 420px; opacity: 1; transform: scale(1); }
  .tst-card.dim-left, .tst-card.dim-right { opacity: 1; transform: scale(1); }
  .tst-dots { display: none; }
  .cta-inner { grid-template-columns: 1fr; }
  .cta-login-form { padding: 24px; }
  .form-row { flex-direction: column; align-items: stretch; }
  .form-group { min-width: 100%; }
  .cta-login-form .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  :root { --space-section: 40px; }
  .hero-ctas .btn { font-size: 15px; padding: 0 16px; }
  .hero-stat-bar { gap: 16px; }
  .stat-num { font-size: 20px; }
  .stat-label { font-size: 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .header-actions .btn-primary { padding: 0 14px; font-size: 13px; }
  .logo-text { font-size: 15px; }
  .logo-text span { font-size: 12px; }
  .cta-login-form { padding: 20px; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 14px; }
}

/* ========== Accessibility ========== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* roulang page: category1 */
:root {
  --primary: #00e5a0;
  --primary-dark: #00c989;
  --accent: #ff9f2e;
  --bg-dark: #10161c;
  --bg-content: #141b22;
  --bg-card: #1a222b;
  --bg-float: #202a34;
  --text-main: #eef3f2;
  --text-secondary: #a7b3bd;
  --text-muted: #6f7c88;
  --border-color: rgba(43, 54, 65, 0.8);
  --border-primary: rgba(0, 229, 160, 0.2);
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 229, 160, 0.08);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --radius-tag: 999px;
  --radius-icon: 12px;
  --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-en: 'Inter', 'Roboto', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .3s ease;
}

a:hover {
  color: var(--primary-dark);
}

button {
  cursor: pointer;
  font-family: var(--font-cn);
}

input {
  font-family: var(--font-cn);
  border: none;
  outline: none;
}

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

/* ========== Header Navigation ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(16, 22, 28, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(43, 54, 65, 0.5);
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
  height: 64px;
}

.site-header.scrolled {
  background: rgba(16, 22, 28, 0.92);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-bottom-color: var(--border-primary);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

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

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 15px;
  background: rgba(0, 229, 160, 0.08);
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.logo-text span {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-shrink: 0;
}

.nav-menu a {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 2px;
  position: relative;
  transition: color .3s ease;
  white-space: nowrap;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s ease;
}

.nav-menu a:hover {
  color: var(--text-main);
}

.nav-menu a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a.active::after {
  transform: scaleX(1);
}

.nav-menu a.active:hover {
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  padding: 0 14px;
  height: 36px;
  width: 180px;
  transition: border-color .3s ease, box-shadow .3s ease;
}

.search-box i {
  font-size: 13px;
  color: var(--text-muted);
  margin-right: 8px;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
  height: 100%;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.08);
}

.mobile-menu-search {
  display: none !important;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 20px;
  padding: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  height: 48px;
  padding: 0 24px;
  transition: all .3s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
  border-radius: 8px;
}

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

.btn-primary:hover {
  background: #0df0ab;
  box-shadow: 0 6px 20px rgba(0, 229, 160, 0.3);
  transform: translateY(-1px);
  color: var(--bg-dark);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 229, 160, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
}

/* ========== Page Hero ========== */
.page-hero {
  padding: 140px 0 60px;
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 22, 28, 0.88) 0%, var(--bg-dark) 100%);
}

.page-hero::after {
  content: '';
  position: absolute;
  top: 20%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

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

.page-hero-content {
  max-width: 900px;
}

.page-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--accent);
  border: 1px solid rgba(255, 159, 46, 0.4);
  border-radius: var(--radius-tag);
  padding: 6px 16px;
  margin-bottom: 20px;
  background: rgba(255, 159, 46, 0.08);
}

.page-tag i {
  font-size: 12px;
}

.page-hero h1 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--text-main);
  letter-spacing: 0.5px;
}

.page-hero h1 .highlight {
  color: var(--primary);
}

.page-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 720px;
  margin-bottom: 30px;
}

.page-hero-meta {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.page-hero-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.page-hero-meta .meta-item i {
  color: var(--primary);
  font-size: 16px;
}

/* ========== Section Base ========== */
.section-block {
  padding: 72px 0;
}

.section-block.bg-content {
  background: var(--bg-content);
}

.section-header {
  margin-bottom: 44px;
}

.section-header h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-main);
}

.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

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

.section-header.center p {
  margin: 0 auto;
}

/* ========== Feature Split ========== */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.split-text h2 {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
  color: var(--text-main);
}

.split-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.split-text .point-list {
  margin-top: 22px;
}

.split-text .point-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
  list-style: none;
}

.split-text .point-list li i {
  color: var(--primary);
  font-size: 14px;
  margin-top: 4px;
  flex-shrink: 0;
}

.split-media {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  height: 360px;
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-card);
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16, 22, 28, 0.3) 0%, rgba(16, 22, 28, 0) 60%);
}

.split-media .media-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--bg-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  z-index: 2;
}

/* ========== Info Cards ========== */
.info-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display: flex;
  flex-direction: column;
}

.info-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 229, 160, 0.25);
}

.info-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.info-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-icon);
  background: rgba(0, 229, 160, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  transition: background .3s ease, transform .3s ease;
}

.info-card:hover .info-card-icon {
  background: rgba(0, 229, 160, 0.18);
  transform: scale(1.05);
}

.info-card-arrow {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .3s ease, transform .3s ease;
}

.info-card:hover .info-card-arrow {
  color: var(--primary);
  transform: translateX(4px);
}

.info-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.info-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}

.info-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.info-card-link:hover {
  color: var(--primary-dark);
}

/* ========== Steps / Timeline ========== */
.steps-section {
  background: var(--bg-content);
  position: relative;
}

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

.step-item {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  position: relative;
  border: 1px solid var(--border-color);
  transition: transform .3s ease, box-shadow .3s ease;
}

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

.step-num {
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 700;
  color: rgba(0, 229, 160, 0.25);
  line-height: 1;
  margin-bottom: 18px;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== Highlight Numbers ========== */
.highlight-band {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 229, 160, 0.02);
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.highlight-num {
  font-family: var(--font-en);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.highlight-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ========== Category CTA ========== */
.category-cta {
  padding: 96px 0;
  text-align: center;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  position: relative;
}

.category-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16, 22, 28, 0.92), rgba(16, 22, 28, 0.82));
}

.category-cta .container {
  position: relative;
  z-index: 2;
}

.category-cta h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}

.category-cta p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 30px;
  line-height: 1.8;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  height: 48px;
  padding: 0 32px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-btn);
  transition: all .3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-outline:hover {
  background: rgba(0, 229, 160, 0.1);
  color: var(--primary);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
  transform: translateY(-2px);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 72px 0 80px;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 22px 4px;
}

.faq-item.active {
  border-bottom-color: var(--border-primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: color .3s ease;
  gap: 16px;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle {
  font-size: 18px;
  color: var(--primary);
  transition: transform .4s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, margin-top .4s ease;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  margin-top: 14px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 44px;
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 18px;
}

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

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .3s ease, padding-left .3s ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom span {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom .brand-site {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-bottom .brand-site i {
  font-size: 12px;
}

/* ========== Responsive ========== */
@media (min-width: 768px) and (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  .nav-menu {
    gap: 20px;
  }
  .search-box {
    display: none;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .highlight-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-block {
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .site-header {
    height: 60px;
  }
  .header-inner {
    height: 60px;
  }
  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-120%);
    transition: transform .3s ease;
    z-index: 999;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.4);
  }
  .nav-menu.open {
    transform: translateY(0);
  }
  .nav-menu a {
    display: block;
    padding: 12px 4px;
    font-size: 15px;
    border-bottom: 1px solid rgba(43, 54, 65, 0.4);
    border-radius: 0;
  }
  .nav-menu a::after {
    display: none;
  }
  .nav-menu a.active {
    color: var(--primary);
    padding-left: 12px;
  }
  .mobile-toggle {
    display: block;
  }
  .header-actions .search-box {
    display: none;
  }
  .header-actions .btn-ghost {
    display: none;
  }
  .mobile-menu-search {
    display: flex !important;
    margin-top: 14px;
    width: 100%;
  }
  .page-hero {
    padding: 120px 0 48px;
  }
  .page-hero-meta {
    gap: 16px;
    flex-direction: column;
    align-items: flex-start;
  }
  .section-block {
    padding: 48px 0;
  }
  .split-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .split-media {
    height: 260px;
  }
  .info-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .highlight-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .category-cta {
    padding: 60px 0;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 16px;
  }
  .logo-text span {
    font-size: 12px;
  }
  .header-actions .btn-primary {
    font-size: 12px;
    padding: 0 12px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
}

/* roulang page: article */
:root {
    --primary: #00e5a0;
    --primary-dark: #00b881;
    --accent: #ff9f2e;
    --bg: #10161c;
    --bg-content: #141b22;
    --bg-card: #1a222b;
    --bg-float: #202a34;
    --text: #eef3f2;
    --text-secondary: #a7b3bd;
    --text-muted: #6f7c88;
    --border: #2b3641;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-input: 8px;
    --radius-badge: 999px;
    --shadow: 0 4px 12px rgba(0,0,0,.25);
    --shadow-hover: 0 12px 32px rgba(0,0,0,.4), 0 0 0 1px rgba(0,229,160,.08);
    --font-cn: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
    --font-num: 'Inter','Roboto',var(--font-cn);
    --header-h: 64px;
    --container: 1200px;
    --spacing-section: 96px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-cn);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease}
a:hover{color:var(--primary-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none;color:inherit}
input::placeholder{color:var(--text-muted)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:14px;line-height:1;height:48px;padding:0 24px;border-radius:var(--radius-btn);cursor:pointer;transition:all .3s ease;letter-spacing:.02em;white-space:nowrap}
.btn-primary{background:var(--primary);color:#0a1210;box-shadow:0 4px 16px rgba(0,229,160,.2);font-weight:700}
.btn-primary:hover{background:#12f2b2;color:#0a1210;box-shadow:0 8px 28px rgba(0,229,160,.35);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 2px 8px rgba(0,229,160,.25)}
.btn-outline{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:rgba(0,229,160,.1);color:var(--primary);border-color:var(--primary)}
.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid transparent}
.btn-ghost:hover{background:rgba(255,255,255,.06);color:var(--text)}
.btn-sm{height:36px;padding:0 18px;font-size:13px;border-radius:8px}
.btn-lg{height:52px;padding:0 32px;font-size:15px}
.badge{display:inline-flex;align-items:center;gap:4px;background:rgba(0,229,160,.12);color:var(--primary);font-size:12px;font-weight:600;padding:4px 14px;border-radius:var(--radius-badge);letter-spacing:.04em}
.badge-accent{background:rgba(255,159,46,.14);color:var(--accent)}
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:1000;background:rgba(16,22,28,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(43,54,65,.6);transition:background .4s ease,box-shadow .4s ease}
.site-header.scrolled{background:rgba(16,22,28,.96);box-shadow:0 8px 32px rgba(0,0,0,.35)}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:34px;height:34px;border-radius:10px;background:rgba(0,229,160,.1);border:1px solid rgba(0,229,160,.4);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:15px;transition:box-shadow .3s ease}
.logo:hover .logo-icon{box-shadow:0 0 20px rgba(0,229,160,.25)}
.logo-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;display:flex;align-items:baseline;gap:4px}
.logo-text span{font-size:13px;font-weight:400;color:var(--text-muted)}
.nav-menu{display:flex;align-items:center;gap:28px;flex:1;margin-left:8px}
.nav-menu a{position:relative;font-size:15px;font-weight:500;color:var(--text-secondary);padding:6px 2px;transition:color .3s ease}
.nav-menu a::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .3s ease,opacity .3s ease;opacity:0}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1);opacity:1}
.nav-menu a.active{color:var(--primary);font-weight:600}
.nav-menu a.active::after{transform:scaleX(1);opacity:1}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;background:var(--bg-content);border:1px solid var(--border);border-radius:var(--radius-input);padding:0 12px;height:38px;width:190px;transition:border-color .3s ease,box-shadow .3s ease}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,229,160,.15)}
.search-box i{color:var(--text-muted);font-size:14px}
.search-box input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:13px;height:100%;width:100%}
.mobile-toggle{display:none;width:42px;height:42px;border-radius:10px;background:var(--bg-card);border:1px solid var(--border);align-items:center;justify-content:center;color:var(--text);font-size:18px;cursor:pointer;transition:all .3s ease}
.mobile-toggle:hover{border-color:var(--primary);color:var(--primary)}
.mobile-menu-search{display:none}
.site-footer{background:var(--bg-content);border-top:1px solid var(--border);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--border)}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.8;max-width:380px;margin-top:12px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.03em}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{color:var(--text-secondary);font-size:14px;transition:color .3s ease,padding-left .3s ease}
.footer-col ul a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:24px 0;font-size:13px;color:var(--text-muted)}
.footer-bottom .brand-site{font-family:var(--font-num);color:var(--text-secondary)}
.footer-bottom .brand-site i{color:var(--primary);margin-right:6px}
.breadcrumb-wrap{padding-top:calc(var(--header-h) + 32px);padding-bottom:8px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}
.breadcrumb a{color:var(--text-secondary);font-size:13px}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{font-size:10px;color:var(--text-muted);opacity:.6}
.breadcrumb .current{color:var(--primary);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}
.article-section{padding:40px 0 32px}
.article-body{max-width:900px;margin:0 auto}
.article-header{text-align:left;margin-bottom:36px;padding-bottom:28px;border-bottom:1px solid var(--border)}
.article-cat{display:inline-block;margin-bottom:18px}
.article-header h1{font-size:clamp(28px,4.5vw,46px);font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text);margin:14px 0 20px;font-family:var(--font-cn)}
.article-meta{display:flex;align-items:center;gap:24px;flex-wrap:wrap;font-size:13px;color:var(--text-muted)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{color:var(--primary);opacity:.7}
.article-content{max-width:720px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text)}
.article-content p{margin-bottom:24px;font-size:16px;line-height:1.85}
.article-content h2{font-size:24px;font-weight:700;color:var(--text);line-height:1.4;margin:40px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--border);letter-spacing:-.01em}
.article-content h3{font-size:19px;font-weight:600;color:var(--text);line-height:1.4;margin:32px 0 12px}
.article-content h4{font-size:16px;font-weight:600;color:var(--text);line-height:1.4;margin:24px 0 10px}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(0,229,160,.4)}
.article-content a:hover{text-decoration-color:var(--primary)}
.article-content ul,.article-content ol{margin:0 0 24px 20px;padding:0}
.article-content ul li,.article-content ol li{margin-bottom:10px;line-height:1.8}
.article-content ul li::marker{color:var(--primary)}
.article-content ol li::marker{color:var(--primary);font-weight:600}
.article-content blockquote{border-left:3px solid var(--primary);background:rgba(0,229,160,.06);padding:16px 24px;border-radius:0 12px 12px 0;margin:28px 0;color:var(--text-secondary);font-style:normal;position:relative}
.article-content blockquote::before{content:'\201C';position:absolute;top:4px;left:10px;font-size:28px;color:var(--primary);opacity:.3}
.article-content img{border-radius:14px;margin:32px auto;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.article-content figure{margin:32px 0}
.article-content figure img{margin:0 auto}
.article-content figcaption{text-align:center;font-size:13px;color:var(--text-muted);margin-top:12px;padding:8px 16px;background:var(--bg-content);border-radius:8px;display:inline-block}
.article-content hr{border:none;height:1px;background:var(--border);margin:40px 0}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:14px}
.article-content th{background:var(--bg-content);color:var(--text);font-weight:600;text-align:left;padding:12px 16px;border-bottom:2px solid var(--border)}
.article-content td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text-secondary)}
.article-footer{max-width:720px;margin:40px auto 0;display:flex;justify-content:space-between;align-items:center;padding-top:28px;border-top:1px solid var(--border)}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:14px;transition:color .3s ease,gap .3s ease}
.back-link:hover{color:var(--primary);gap:12px}
.article-empty{max-width:600px;margin:60px auto;text-align:center;padding:64px 32px;background:var(--bg-card);border-radius:var(--radius-card);border:1px solid var(--border)}
.article-empty .empty-icon{width:72px;height:72px;border-radius:50%;background:rgba(0,229,160,.1);display:flex;align-items:center;justify-content:center;margin:0 auto 24px;font-size:28px;color:var(--primary)}
.article-empty h2{font-size:24px;font-weight:700;margin-bottom:12px}
.article-empty p{color:var(--text-muted);font-size:15px;margin-bottom:24px}
.related-section{padding:72px 0 80px;background:var(--bg-content);margin-top:16px;border-top:1px solid var(--border)}
.section-head{margin-bottom:40px;text-align:center}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--text);letter-spacing:-.01em;line-height:1.3;margin-bottom:10px}
.section-head p{color:var(--text-muted);font-size:15px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{display:block;background:var(--bg-card);border-radius:var(--radius-card);border:1px solid var(--border);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(0,229,160,.2)}
.related-card:hover img{transform:scale(1.04)}
.related-cover{height:180px;overflow:hidden;background:var(--bg-float);position:relative}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-body{padding:18px 20px 20px}
.related-body .badge{margin-bottom:10px}
.related-body h3{font-size:16px;font-weight:600;color:var(--text);line-height:1.4;margin:6px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:44px}
.related-body p{font-size:13px;color:var(--text-muted);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-date{font-size:12px;color:var(--text-muted);display:inline-flex;align-items:center;gap:6px}
.related-date i{color:var(--primary);opacity:.6}
.related-empty{text-align:center;padding:48px 20px;background:var(--bg-card);border-radius:var(--radius-card);border:1px dashed var(--border);color:var(--text-muted);font-size:14px}
.cta-section{padding:80px 0;background:linear-gradient(135deg,rgba(0,229,160,.08) 0%,rgba(16,22,28,0) 40%),var(--bg)}
.cta-inner{background:linear-gradient(135deg,#182029 0%,#10161c 100%);border:1px solid var(--border);border-radius:24px;padding:48px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-inner::before{content:'';position:absolute;top:-80px;right:-80px;width:280px;height:280px;border-radius:50%;background:rgba(0,229,160,.05);pointer-events:none}
.cta-inner::after{content:'';position:absolute;bottom:-60px;left:-60px;width:200px;height:200px;border-radius:50%;background:rgba(255,159,46,.04);pointer-events:none}
.cta-text h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;color:var(--text);margin-bottom:10px;line-height:1.4}
.cta-text p{color:var(--text-secondary);font-size:14px;max-width:480px;line-height:1.8}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}
@media(max-width:1024px){
    .header-inner{gap:16px}
    .nav-menu{gap:18px}
    .search-box{display:none}
    .header-actions .search-box{display:none}
    .mobile-toggle{display:flex}
    .nav-menu{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(16,22,28,.98);flex-direction:column;align-items:flex-start;padding:20px 24px 28px;gap:0;box-shadow:0 16px 40px rgba(0,0,0,.4);border-bottom:1px solid var(--border);transform:translateY(-120%);opacity:0;visibility:hidden;transition:transform .4s ease,opacity .4s ease,visibility .4s;backdrop-filter:blur(14px)}
    .nav-menu.open{transform:translateY(0);opacity:1;visibility:visible}
    .nav-menu a{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid rgba(43,54,65,.5)}
    .nav-menu a:last-of-type{border-bottom:none}
    .nav-menu a::after{display:none}
    .nav-menu a.active{border-bottom:1px solid rgba(0,229,160,.3);padding-left:10px}
    .nav-menu .mobile-menu-search{display:flex;width:100%;margin-top:12px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .article-section{padding:24px 0 32px}
    .breadcrumb-wrap{padding-top:calc(var(--header-h) + 20px)}
    .article-header h1{font-size:clamp(23px,5vw,32px);line-height:1.35}
    .article-meta{gap:14px;flex-wrap:wrap}
    .article-content{font-size:15px}
    .article-content p{font-size:15px;line-height:1.8}
    .related-grid{grid-template-columns:1fr}
    .cta-inner{flex-direction:column;text-align:center;padding:36px 24px}
    .cta-actions{justify-content:center}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
    .container{padding:0 16px}
    .logo-text{font-size:15px}
    .logo-text span{font-size:12px}
    .header-actions .btn-sm{display:none}
    .cta-section{padding:48px 0}
    .cta-inner{padding:28px 20px}
    .cta-actions{flex-direction:column;width:100%}
    .cta-actions .btn{width:100%}
    .related-cover{height:160px}
    .article-footer{flex-direction:column;gap:16px;text-align:center}
}

/* roulang page: category2 */
:root {
  --primary: #00e5a0;
  --primary-bright: #1df0b1;
  --primary-soft: rgba(0, 229, 160, .1);
  --accent: #ff9f2e;
  --bg: #10161c;
  --bg-content: #141b22;
  --card: #1a222b;
  --overlay: #202a34;
  --text: #eef3f2;
  --text-sub: #a7b3bd;
  --text-muted: #6f7c88;
  --border: #2b3641;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, .25);
  --shadow-lift: 0 12px 32px rgba(0, 0, 0, .4);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: none;
}

input {
  font-family: inherit;
  border: 0;
  outline: 0;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: rgba(0, 229, 160, .25);
  color: var(--text);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
  background: rgba(16, 22, 28, .9);
  border-bottom: 1px solid rgba(43, 54, 65, .6);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

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

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  background: var(--primary-soft);
}

.logo-text {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  letter-spacing: .2px;
  white-space: nowrap;
}

.logo-text span {
  font-weight: 400;
  font-size: 13px;
  color: var(--text-sub);
  margin-left: 4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu a {
  font-size: 15px;
  color: var(--text-sub);
  padding: 8px 0;
  position: relative;
  transition: color .25s ease;
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s ease;
}

.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  width: 180px;
  height: 36px;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.search-box i {
  color: var(--text-muted);
  font-size: 13px;
}

.search-box input {
  background: transparent;
  color: var(--text);
  font-size: 13px;
  width: 100%;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 229, 160, .12);
}

.mobile-menu-search {
  display: none;
  width: 100%;
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: border-color .25s ease;
}

.mobile-toggle:hover {
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  transition: all .25s ease;
  border: 1px solid transparent;
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
  border-radius: 8px;
}

.btn-lg {
  height: 50px;
  padding: 0 32px;
  font-size: 15px;
}

.btn-primary {
  background: var(--primary);
  color: #0b1f18;
  box-shadow: 0 4px 14px rgba(0, 229, 160, .18);
}

.btn-primary:hover {
  background: var(--primary-bright);
  box-shadow: 0 6px 22px rgba(0, 229, 160, .28);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 229, 160, .18);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: transparent;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .06);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(0, 229, 160, .6);
}

.btn-outline:hover {
  background: var(--primary-soft);
  box-shadow: 0 0 14px rgba(0, 229, 160, .12);
}

main {
  padding-top: 64px;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 56px;
  background:
    linear-gradient(180deg, rgba(16, 22, 28, .93), rgba(16, 22, 28, .82)),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 30%, rgba(0, 229, 160, .12), transparent 42%);
  pointer-events: none;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid rgba(0, 229, 160, .22);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.page-hero h1 {
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.2;
  font-weight: 700;
  max-width: 900px;
}

.page-hero h1 span {
  color: var(--primary);
  font-weight: 400;
}

.page-hero .lead {
  margin-top: 18px;
  max-width: 680px;
  color: var(--text-sub);
  font-size: 18px;
  line-height: 1.7;
}

.metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: start;
  gap: 40px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.metric-item .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-family: 'Inter', 'Roboto', 'PingFang SC', sans-serif;
}

.metric-item .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.feature-split {
  padding: 48px 0 72px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-copy h2 {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.28;
  margin-bottom: 18px;
}

.feature-copy p {
  color: var(--text-sub);
  margin-bottom: 20px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 12px;
  color: var(--text);
  font-size: 15px;
}

.feature-list li i {
  color: var(--primary);
  margin-top: 5px;
  font-size: 14px;
}

.feature-visual {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 160, .25);
  box-shadow: 0 0 0 1px rgba(0, 229, 160, .08), var(--shadow-card);
}

.feature-visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.feature-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: #1a1206;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 8px;
}

.section-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-head h2 {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.28;
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-sub);
  font-size: 16px;
}

.benefit-grid-section {
  padding: 72px 0 88px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.benefit-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(0, 229, 160, .35);
}

.benefit-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background .25s ease;
}

.benefit-card:hover .icon {
  background: rgba(0, 229, 160, .18);
}

.benefit-card h3 {
  font-size: 18px;
  line-height: 1.4;
}

.benefit-card p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.75;
  flex: 1;
}

.card-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link i {
  font-size: 12px;
  transition: transform .2s ease;
}

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

.path-section {
  padding: 72px 0 80px;
  background: var(--bg-content);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.path-node {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 22px 24px;
  position: relative;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.path-node:hover {
  border-color: rgba(0, 229, 160, .4);
  box-shadow: var(--shadow-card);
}

.path-node::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), rgba(0, 229, 160, .08));
  opacity: .6;
}

.path-node::after {
  content: '';
  position: absolute;
  top: -6px;
  left: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 229, 160, .15);
}

.path-node .level {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: .4px;
}

.path-node h3 {
  font-size: 18px;
  margin: 8px 0 6px;
  line-height: 1.4;
}

.path-node p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.75;
}

.path-note {
  margin-top: 32px;
  padding: 16px 20px;
  background: var(--bg);
  border-left: 3px solid var(--primary);
  border-radius: 10px;
  color: var(--text-sub);
  font-size: 14px;
}

.scene-section {
  padding: 72px 0 88px;
}

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

.scene-card {
  background: linear-gradient(145deg, var(--card), var(--bg-content));
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: transform .25s ease, border-color .25s ease;
}

.scene-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 160, .3);
}

.scene-card .num {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.scene-card h3 {
  font-size: 17px;
  margin-top: 10px;
  line-height: 1.4;
}

.scene-card p {
  color: var(--text-sub);
  font-size: 14px;
  margin-top: 10px;
  line-height: 1.75;
}

.faq-section {
  padding: 72px 0 88px;
}

.faq-list {
  max-width: 860px;
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  transition: color .25s ease;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-answer p {
  padding: 0 0 22px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
}

.soft-cta {
  padding: 24px 0 96px;
}

.soft-cta-inner {
  text-align: center;
  border: 1px dashed rgba(0, 229, 160, .4);
  border-radius: 24px;
  padding: 56px 24px;
  background: linear-gradient(180deg, rgba(0, 229, 160, .04), transparent);
}

.soft-cta-inner h2 {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.3;
}

.soft-cta-inner p {
  color: var(--text-sub);
  max-width: 640px;
  margin: 12px auto 28px;
  font-size: 15px;
}

.site-footer {
  background: var(--bg-content);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

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

.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  margin-top: 16px;
  max-width: 380px;
  line-height: 1.8;
}

.footer-col h4 {
  color: var(--text);
  font-size: 16px;
  margin-bottom: 16px;
  font-weight: 600;
}

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

.footer-col ul a {
  color: var(--text-sub);
  font-size: 14px;
  transition: color .25s ease;
}

.footer-col ul a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

.brand-site i {
  margin-right: 4px;
  color: var(--primary);
}

@media (max-width: 1024px) {
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 24px;
    background: rgba(16, 22, 28, .98);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, .4);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform .35s ease, opacity .25s ease, visibility .25s;
    z-index: 99;
  }

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

  .header-actions .search-box,
  .header-actions .btn-ghost {
    display: none;
  }

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

  .mobile-menu-search {
    display: flex;
    width: 100%;
  }

  .mobile-menu-search.search-box {
    width: 100%;
    margin-top: 8px;
  }

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

  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

@media (max-width: 768px) {
  .page-hero {
    padding: 56px 0 40px;
  }

  .feature-split {
    padding: 40px 0;
  }

  .benefit-grid-section,
  .path-section,
  .scene-section,
  .faq-section {
    padding: 40px 0;
  }

  .soft-cta {
    padding: 24px 0 56px;
  }

  .section-head {
    margin-bottom: 28px;
  }

  .grid-2,
  .path-track,
  .scene-cards {
    grid-template-columns: 1fr;
  }

  .metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

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

  .path-node {
    padding-left: 28px;
    padding-top: 16px;
  }

  .path-node::before {
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), rgba(0, 229, 160, .08));
  }

  .path-node::after {
    top: 18px;
    left: -6px;
  }
}

@media (max-width: 520px) {
  .logo-text span {
    display: none;
  }

  .header-inner {
    gap: 12px;
  }

  .header-actions .btn-primary {
    padding: 0 12px;
    font-size: 12px;
    height: 34px;
  }

  .soft-cta-inner {
    padding: 40px 18px;
  }
}