/* roulang page: index */
:root {
  --color-primary: #0E4C46;
  --color-primary-deep: #0A352F;
  --color-primary-light: #2A6B63;
  --color-accent: #E0A526;
  --color-accent-dark: #C8911F;
  --color-bg: #F6F4EF;
  --color-bg-alt: #EDEAE3;
  --color-card: #FFFFFF;
  --color-text: #1F2A27;
  --color-muted: #5E6E68;
  --color-border: #E2DED5;
  --color-divider: #E8E4DA;
  --color-success: #2F7D5D;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-img: 6px;
  --shadow-card: 0 1px 2px rgba(14,76,70,0.06), 0 4px 12px rgba(14,76,70,0.05);
  --shadow-hover: 0 8px 28px rgba(14,76,70,0.14);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --space-section: clamp(60px, 8vw, 110px);
  --container-w: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease, border-color .2s ease; }
a:hover { color: var(--color-primary); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto clamp(28px, 4vw, 48px);
}
.section-head .eyebrow { justify-content: center; }
.section-head .eyebrow::before { display: none; }
.section-head .eyebrow::after {
  content: "";
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}
.section-head .desc {
  margin-top: 14px;
  color: var(--color-muted);
  font-size: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: .9375rem;
  cursor: pointer;
  transition: all .25s ease;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-deep);
  border: 2px solid var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-primary-deep);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(224,165,38,.35);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.85);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.btn:focus-visible {
  outline: 3px solid rgba(224,165,38,.4);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: 72px;
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 1px 4px rgba(14,76,70,.1);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav-left a, .nav-right a {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 8px 0;
  position: relative;
  transition: color .2s ease;
}
.nav-left a::after, .nav-right a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s ease;
}
.nav-left a:hover::after, .nav-right a:hover::after,
.nav-left a.active::after, .nav-right a.active::after { transform: scaleX(1); }
.nav-left a:hover, .nav-right a:hover,
.nav-left a.active, .nav-right a.active { color: var(--color-primary); }
.brand {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-logo {
  width: 32px;
  height: 28px;
  flex-shrink: 0;
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: .01em;
  line-height: 1.2;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}
.menu-toggle i { font-size: 1.2rem; color: var(--color-primary); }
.mobile-cta {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-primary-deep);
  font-size: 1rem;
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  height: calc(100vh - 72px);
  background: var(--color-card);
  z-index: 999;
  flex-direction: column;
  padding: 32px 24px;
  overflow-y: auto;
  box-shadow: 0 8px 24px rgba(14,76,70,.12);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 18px 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color .2s ease;
}
.mobile-menu a:hover { color: var(--color-primary); }

/* Hero */
.hero {
  position: relative;
  padding-top: 72px;
  min-height: 640px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(115deg, rgba(10,53,47,.94) 0%, rgba(14,76,70,.78) 45%, rgba(10,53,47,.55) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0 40px;
  max-width: 700px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .12em;
  color: rgba(255,255,255,.75);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}
.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 22px;
}
.hero h1 .accent {
  color: var(--color-accent);
}
.hero-sub {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 60px;
  border-top: 1px solid rgba(255,255,255,.18);
  padding: 28px 0 36px;
}
.stat {
  text-align: center;
  border-right: 1px solid rgba(255,255,255,.12);
  padding: 8px 12px;
}
.stat:last-child { border-right: none; }
.stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}
.stat-label {
  font-size: .8125rem;
  color: rgba(255,255,255,.7);
  margin-top: 6px;
}

/* Trust Bar */
.trust-bar {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
}
.trust-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 8px;
  background: rgba(14,76,70,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.125rem;
}
.trust-item span {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Agenda Timeline */
.agenda-section {
  padding: var(--space-section) 0;
  background: var(--color-bg);
}
.timeline {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: #D9CFBC;
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 48px;
}
.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}
.timeline-item:nth-child(even) {
  left: 50%;
  text-align: left;
}
.timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  box-shadow: inset 0 0 0 5px var(--color-primary);
  z-index: 2;
}
.timeline-item:nth-child(odd)::before {
  right: -11px;
}
.timeline-item:nth-child(even)::before {
  left: -11px;
}
.timeline-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, border-color .25s ease;
  border: 1px solid transparent;
  text-align: left;
}
.timeline-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.timeline-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.timeline-card p {
  font-size: .875rem;
  color: var(--color-muted);
  line-height: 1.6;
}
.tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(14,76,70,.08);
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Speakers */
.speakers-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-alt);
}
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.speaker-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, transform .25s ease;
  position: relative;
}
.speaker-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.speaker-card.featured {
  border: 2px solid var(--color-accent);
  background: rgba(255,255,255,.98);
}
.speaker-card.featured::before {
  content: "重点嘉宾";
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--color-accent);
  color: var(--color-primary-deep);
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
}
.speaker-img {
  width: 100%;
  height: 220px;
  border-radius: var(--radius-img);
  overflow: hidden;
  margin-bottom: 18px;
  background: var(--color-bg-alt);
}
.speaker-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.speaker-card:hover .speaker-img img { transform: scale(1.03); }
.speaker-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.speaker-role {
  font-size: .8125rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 10px;
}
.speaker-bio {
  font-size: .875rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* Tickets */
.tickets-section {
  padding: var(--space-section) 0;
  background: var(--color-bg);
}
.tickets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
  margin-top: 40px;
}
.ticket-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: box-shadow .25s ease, transform .25s ease;
  position: relative;
}
.ticket-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.ticket-card.recommended {
  border: 2px solid var(--color-accent);
  transform: scale(1.02);
}
.ticket-card.recommended:hover { transform: scale(1.02) translateY(-4px); }
.ticket-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-primary-deep);
  font-size: .75rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 4px;
  white-space: nowrap;
}
.ticket-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.ticket-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 22px;
}
.ticket-price .amount {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.ticket-card.recommended .ticket-price .amount { color: var(--color-accent-dark); }
.ticket-price .unit {
  font-size: .875rem;
  color: var(--color-muted);
}
.ticket-benefits {
  flex: 1;
  margin-bottom: 24px;
}
.ticket-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  color: var(--color-text);
  padding: 6px 0;
  line-height: 1.5;
}
.ticket-benefits li i {
  color: var(--color-success);
  font-size: .8125rem;
  margin-top: 4px;
  min-width: 16px;
}

/* Register Section */
.register-section {
  padding: var(--space-section) 0;
  background: var(--color-primary-deep);
  position: relative;
  overflow: hidden;
}
.register-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.register-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.register-text h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  color: #fff;
  margin-bottom: 18px;
}
.register-text .eyebrow { color: var(--color-accent); margin-bottom: 16px; }
.register-text .eyebrow::before { background: var(--color-accent); }
.register-text p {
  color: rgba(255,255,255,.72);
  font-size: .9375rem;
  line-height: 1.8;
  margin-bottom: 24px;
}
.register-text .contact-method {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,.9);
  font-size: .9375rem;
  margin-bottom: 10px;
}
.register-text .contact-method i {
  color: var(--color-accent);
  font-size: 1rem;
  width: 20px;
}
.register-form {
  background: rgba(0,0,0,.22);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-card);
  padding: 36px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  margin-bottom: 8px;
}
.form-group input,
.form-group select {
  width: 100%;
  height: 48px;
  background: rgba(255,255,255,.96);
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  padding: 0 14px;
  font-size: .9375rem;
  color: var(--color-text);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%230E4C46'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(224,165,38,.18);
}
.register-form .btn {
  width: 100%;
  margin-top: 8px;
}

/* News Section */
.news-section {
  padding: var(--space-section) 0;
  background: var(--color-bg);
}
.news-list {
  max-width: 920px;
  margin: 0 auto;
}
.news-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 20px;
  align-items: center;
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
  transition: background .2s ease, box-shadow .2s ease;
  border: 1px solid transparent;
}
.news-row:hover {
  background: #F8F4EB;
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent);
}
.news-date {
  width: 72px;
  text-align: center;
  background: rgba(14,76,70,.08);
  border-radius: 6px;
  padding: 10px 6px;
  line-height: 1.2;
}
.news-date .day {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
}
.news-date .month {
  font-size: .75rem;
  color: var(--color-muted);
  display: block;
  margin-top: 2px;
}
.news-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  transition: color .2s ease;
  line-height: 1.5;
}
.news-row:hover .news-body h3 { color: var(--color-primary); }
.news-body p {
  font-size: .875rem;
  color: var(--color-muted);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.6;
}
.news-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}
.badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(14,76,70,.08);
  border-radius: 4px;
  padding: 4px 10px;
  white-space: nowrap;
}
.news-meta .read-more {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color .2s ease;
}
.news-meta .read-more:hover { color: var(--color-accent-dark); }
.news-empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--color-muted);
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.news-empty i {
  font-size: 2rem;
  color: var(--color-primary-light);
  display: block;
  margin-bottom: 12px;
}
.news-view-all {
  text-align: center;
  margin-top: 28px;
}

/* FAQ */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--color-bg-alt);
}
.accordion {
  max-width: 860px;
  margin: 0 auto;
  background: transparent;
}
.accordion-item {
  background: var(--color-card);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
  border: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
  list-style: none;
}
.accordion-item:hover {
  box-shadow: var(--shadow-hover);
}
.accordion-item.is-active {
  border-color: var(--color-primary);
  background: #F2F0E8;
}
.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
  transition: color .2s ease;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
}
.accordion-title:hover { color: var(--color-primary); }
.accordion-item.is-active .accordion-title { color: var(--color-primary); }
.accordion-icon {
  position: relative;
  width: 18px;
  height: 18px;
  min-width: 18px;
}
.accordion-icon::before,
.accordion-icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.accordion-icon::before {
  width: 18px;
  height: 2px;
  top: 8px;
  left: 0;
}
.accordion-icon::after {
  width: 2px;
  height: 18px;
  top: 0;
  left: 8px;
}
.accordion-item.is-active .accordion-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}
.accordion-content {
  padding: 0 24px 20px;
  color: var(--color-muted);
  font-size: .9375rem;
  line-height: 1.7;
  display: none;
}
.accordion-content p { margin-bottom: 8px; }
.accordion-item.is-active .accordion-content { display: block; }

/* CTA Strip */
.cta-strip {
  background: var(--color-accent);
  padding: 36px 0;
}
.cta-strip .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-strip h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 800;
  color: var(--color-primary-deep);
  margin-bottom: 4px;
}
.cta-strip p {
  color: rgba(14,53,47,.8);
  font-size: .9375rem;
}
.cta-strip .btn {
  background: var(--color-primary-deep);
  color: #fff;
  border: 2px solid var(--color-primary-deep);
}
.cta-strip .btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(10,53,47,.25);
}

/* Footer */
.site-footer {
  background: var(--color-primary-deep);
  padding-top: 64px;
  color: rgba(255,255,255,.75);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h4 .footer-logo {
  width: 28px;
  height: 24px;
}
.footer-brand p {
  font-size: .875rem;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
  max-width: 260px;
}
.footer-col h5 {
  font-size: .875rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
  transition: color .2s ease;
}
.footer-col ul a:hover { color: var(--color-accent); }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .875rem;
  color: rgba(255,255,255,.65);
  margin-bottom: 12px;
}
.footer-contact li i {
  color: var(--color-accent);
  width: 18px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .8125rem;
  color: rgba(255,255,255,.45);
}
.footer-bottom .domain {
  font-family: var(--font-mono);
  font-size: .75rem;
}

/* Responsive */
@media screen and (max-width: 63.9375em) {
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-cta { display: inline-flex; }
  .brand { position: relative; left: auto; transform: none; }
  .header-inner { justify-content: space-between; }
  .hero { min-height: 560px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat { border: none; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .tickets-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .register-inner { grid-template-columns: 1fr; gap: 36px; }
  .news-row { grid-template-columns: 60px 1fr; }
  .news-meta { grid-column: 2; flex-direction: row; align-items: center; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .timeline::before { left: 20px; }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding: 0 0 36px 52px;
    text-align: left !important;
  }
  .timeline-item:nth-child(odd)::before,
  .timeline-item:nth-child(even)::before {
    left: 9px;
    right: auto;
  }
  .timeline-card { text-align: left; }
}

@media screen and (max-width: 39.9375em) {
  .container { padding: 0 18px; }
  .hero { min-height: 520px; padding-top: 72px; }
  .hero-content { padding: 56px 0 32px; }
  .hero-actions .btn { width: 100%; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .trust-item { padding: 8px; flex-direction: column; text-align: center; gap: 8px; }
  .speakers-grid { grid-template-columns: 1fr; }
  .tickets-grid { grid-template-columns: 1fr; }
  .news-row {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }
  .news-date {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 8px;
  }
  .news-date .day { font-size: 1.125rem; }
  .news-date .month { margin-top: 0; }
  .news-meta { grid-column: 1; flex-direction: row; justify-content: space-between; }
  .register-form { padding: 24px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-strip .container { flex-direction: column; text-align: center; }
  .cta-strip .btn { width: 100%; }
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* roulang page: category1 */
:root {
  --color-primary: #0E4C46;
  --color-primary-deep: #0A352F;
  --color-primary-light: #2A6B63;
  --color-accent: #E0A526;
  --color-accent-hover: #C8911F;
  --color-bg: #F6F4EF;
  --color-bg-alt: #EDEAE3;
  --color-card: #FFFFFF;
  --color-text: #1F2A27;
  --color-muted: #5E6E68;
  --color-border: #E2DED5;
  --color-divider: #E8E4DA;
  --color-success: #2F7D5D;
  --radius-card: 8px;
  --radius-btn: 4px;
  --shadow-card: 0 1px 2px rgba(14,76,70,0.06), 0 4px 12px rgba(14,76,70,0.05);
  --shadow-hover: 0 8px 28px rgba(14,76,70,0.14);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --space-section: clamp(60px, 8vw, 110px);
  --space-section-sm: clamp(40px, 5vw, 64px);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--color-primary); }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.3; font-weight: 700; color: var(--color-text); }

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

/* ===== Header & Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-divider);
  height: 72px;
  display: flex;
  align-items: center;
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent) 20%, var(--color-accent) 80%, transparent);
  opacity: 0.35;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  height: 72px;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
}

.nav-right { justify-content: flex-end; }

.nav-left a, .nav-right a {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 6px 2px;
  position: relative;
  transition: color .25s ease;
}

.nav-left a::after, .nav-right a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.nav-left a:hover::after, .nav-right a:hover::after,
.nav-left a.active::after, .nav-right a.active::after {
  transform: scaleX(1);
}

.nav-left a:hover, .nav-right a:hover,
.nav-left a.active, .nav-right a.active {
  color: var(--color-primary);
}

.brand-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 2;
}

.brand-logo svg { flex-shrink: 0; }

.brand-text {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* Mobile Hamburger */
.nav-toggle, .nav-cta-mobile {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-btn);
  color: var(--color-primary);
  font-size: 1.4rem;
  transition: background .25s ease;
}

.nav-toggle:hover, .nav-cta-mobile:hover { background: var(--color-bg-alt); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 99;
  padding: 32px 24px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}

.mobile-menu.open { opacity: 1; visibility: visible; display: flex; }

.mobile-menu a {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 16px 8px;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu a.active { color: var(--color-primary); }
.mobile-menu a.active::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-right: 10px;
}

.mobile-menu a i { color: var(--color-muted); font-size: 0.9rem; }

/* ===== Category Banner ===== */
.category-banner {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
  padding: 76px 0 64px;
  overflow: hidden;
}

.category-banner::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(224,165,38,0.25);
  background: radial-gradient(circle, rgba(224,165,38,0.08) 0%, transparent 70%);
}

.category-banner::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: 40%;
  width: 480px;
  height: 180px;
  background-image: 
    linear-gradient(rgba(224,165,38,0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224,165,38,0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  transform: perspective(400px) rotateX(55deg);
  transform-origin: bottom;
  mask-image: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}

.breadcrumb a { color: rgba(255,255,255,0.7); transition: color .25s ease; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb i { font-size: 0.7rem; opacity: 0.6; }
.breadcrumb span { color: var(--color-accent); }

.banner-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.category-banner h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.category-banner .banner-desc {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.78);
  max-width: 620px;
  position: relative;
  z-index: 2;
  margin-bottom: 32px;
}

.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all .25s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-deep);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-primary-deep);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224,165,38,0.35);
}

.btn-primary:active { transform: translateY(0); box-shadow: none; }

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.85);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

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

/* ===== Category Main Layout ===== */
.category-main {
  padding: var(--space-section) 0;
}

.category-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
}

/* Left Content */
.category-content {
  min-width: 0;
}

.content-section {
  margin-bottom: 56px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 600;
}

.content-section h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-divider);
  position: relative;
}

.content-section h2::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.content-section p {
  color: var(--color-muted);
  margin-bottom: 16px;
}

.content-section .lead {
  font-size: 1.0625rem;
  color: var(--color-text);
}

.content-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  margin: 20px 0;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.content-image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* Product Line Cards */
.product-lines {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.product-line-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  transition: all .3s ease;
  box-shadow: var(--shadow-card);
}

.product-line-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.product-line-card .line-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-primary);
  background: rgba(14,76,70,0.08);
  margin-bottom: 12px;
}

.product-line-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-line-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 0;
  line-height: 1.65;
}

/* Flow Steps */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.flow-step {
  position: relative;
  text-align: center;
  padding: 24px 12px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  transition: all .3s ease;
}

.flow-step:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
}

.flow-step .step-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.flow-step .step-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-primary);
  background: rgba(14,76,70,0.06);
  border-radius: 50%;
}

.flow-step h4 {
  font-size: 0.9375rem;
  margin-bottom: 6px;
}

.flow-step p {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ===== Sidebar ===== */
.category-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 28px 24px;
}

.sidebar-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-divider);
  position: relative;
}

.sidebar-card h3::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.sidebar-cat-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 4px;
  border-bottom: 1px solid var(--color-divider);
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: all .25s ease;
}

.sidebar-cat-list li a:hover {
  color: var(--color-primary);
  padding-left: 8px;
}

.sidebar-cat-list li a i {
  color: var(--color-accent);
  font-size: 0.8rem;
  opacity: 0;
  transition: opacity .25s ease;
}

.sidebar-cat-list li a:hover i { opacity: 1; }

.cta-card {
  background: var(--color-primary);
  background-image: linear-gradient(160deg, var(--color-primary-deep) 0%, var(--color-primary) 100%);
  border: none;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 1px solid rgba(224,165,38,0.25);
}

.cta-card h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.15); }
.cta-card h3::after { background: var(--color-accent); }
.cta-card p { color: rgba(255,255,255,0.7); font-size: 0.9375rem; margin-bottom: 20px; }
.cta-card .btn { width: 100%; }

.sidebar-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.sidebar-contact li i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14,76,70,0.08);
  border-radius: var(--radius-btn);
  color: var(--color-primary);
  font-size: 0.875rem;
  flex-shrink: 0;
}

/* ===== Bottom CTA Strip ===== */
.category-cta-strip {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: clamp(44px, 5vw, 64px) 0;
}

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

.cta-strip-inner h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  margin-bottom: 6px;
}

.cta-strip-inner p {
  color: var(--color-muted);
  font-size: 0.9375rem;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-primary-deep);
  padding-top: 64px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), transparent 30%, transparent 70%, var(--color-accent));
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-logo { flex-shrink: 0; }

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h5, .footer-contact h5 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

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

.footer-col ul li a, .footer-contact ul li {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  transition: color .25s ease;
}

.footer-col ul li a:hover, .footer-contact ul li:hover a {
  color: var(--color-accent);
}

.footer-contact ul li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact ul li i {
  font-size: 0.85rem;
  color: var(--color-accent);
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
}

.footer-bottom .domain {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.05em;
}

/* ===== Responsive ===== */
@media (max-width: 64em) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  
  .category-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .category-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  
  .nav-left, .nav-right { display: none; }
  .nav-toggle { display: flex; }
  
  .header-inner {
    justify-content: flex-start;
  }
  
  .brand-logo {
    position: relative;
    left: auto;
    transform: none;
    margin-right: auto;
  }
  
  .nav-cta-mobile {
    display: flex;
    font-size: 1.1rem;
  }
  
  .nav-toggle { margin-right: 4px; }
}

@media (max-width: 40em) {
  .container { padding: 0 20px; }
  
  .category-banner { padding: 56px 0 48px; }
  
  .product-lines { grid-template-columns: 1fr; }
  
  .flow-steps { grid-template-columns: 1fr 1fr; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  
  .category-sidebar { grid-template-columns: 1fr; }
  
  .cta-strip-inner { flex-direction: column; align-items: flex-start; }
  
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .banner-actions .btn { width: 100%; }
}

@media (max-width: 30em) {
  .flow-steps { grid-template-columns: 1fr; }
  .brand-text { font-size: 1rem; }
}

/* Focus Styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid rgba(224,165,38,0.5);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: article */
:root{
  --color-primary:#0E4C46;
  --color-primary-deep:#0A352F;
  --color-primary-light:#2A6B63;
  --color-accent:#E0A526;
  --color-accent-dark:#C8911F;
  --color-bg:#F6F4EF;
  --color-bg-alt:#EDEAE3;
  --color-card:#FFFFFF;
  --color-text:#1F2A27;
  --color-muted:#5E6E68;
  --color-border:#E2DED5;
  --color-line:#E8E4DA;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",Consolas,monospace;
  --shadow-card:0 1px 2px rgba(14,76,70,0.06),0 4px 12px rgba(14,76,70,0.05);
  --shadow-hover:0 8px 28px rgba(14,76,70,0.14);
  --radius-card:8px;--radius-btn:4px;--radius-img:6px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);font-size:16px;line-height:1.8;color:var(--color-text);background:var(--color-bg);-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}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:.9375rem;font-weight:700;border:2px solid transparent;cursor:pointer;transition:all .25s ease;gap:8px}
.btn-primary{background:var(--color-accent);color:var(--color-primary-deep)}
.btn-primary:hover{background:var(--color-accent-dark);transform:translateY(-2px);box-shadow:0 4px 14px rgba(224,165,38,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;border-color:var(--color-primary);color:var(--color-primary)}
.btn-secondary:hover{border-color:var(--color-accent);color:var(--color-accent)}
.btn-block{width:100%}
/* Header */
.site-header{height:72px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);position:sticky;top:0;z-index:100;border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.site-header.scrolled{box-shadow:0 1px 4px rgba(14,76,70,.08);border-color:var(--color-line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;position:relative}
.nav-left,.nav-right{display:flex;align-items:center;width:30%}
.nav-left{justify-content:flex-start;gap:4px}
.nav-right{justify-content:flex-end;gap:4px}
.nav-left a,.nav-right a{position:relative;font-size:.9375rem;font-weight:600;color:var(--color-text);padding:8px 12px;border-radius:var(--radius-btn);transition:color .2s}
.nav-left a::after,.nav-right a::after{content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--color-accent);transform:scaleX(0);transform-origin:center;transition:transform .25s}
.nav-left a:hover,.nav-right a:hover{color:var(--color-primary)}
.nav-left a:hover::after,.nav-right a:hover::after{transform:scaleX(1)}
.nav-left a.active,.nav-right a.active{color:var(--color-primary)}
.nav-left a.active::after,.nav-right a.active::after{transform:scaleX(1)}
.brand-logo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;z-index:2}
.brand-icon{width:36px;height:30px;flex-shrink:0}
.brand-text{font-size:1.125rem;font-weight:800;color:var(--color-primary-deep);letter-spacing:.5px;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:none;background:transparent;border-radius:var(--radius-btn);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--color-primary);border-radius:2px;transition:all .3s}
.nav-toggle:hover span{background:var(--color-accent)}
.btn-nav-cta{display:none}
.mobile-menu{position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;z-index:89;padding:32px 24px;transform:translateX(100%);transition:transform .35s ease;overflow-y:auto}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{display:block;padding:16px 8px;font-size:1rem;font-weight:600;color:var(--color-text);border-bottom:1px solid var(--color-line);transition:color .2s}
.mobile-menu a:hover{color:var(--color-primary);background:var(--color-bg)}
.mobile-menu .btn{margin-top:24px}
/* Breadcrumb */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;font-size:.8125rem;color:var(--color-muted);margin-bottom:20px;line-height:1.6}
.breadcrumb a{font-weight:500;transition:color .2s}
.breadcrumb a:hover{color:var(--color-accent)}
.breadcrumb .divider{margin:0 8px;color:var(--color-accent);opacity:.6}
.breadcrumb .cat{color:var(--color-muted)}
.breadcrumb .current{color:var(--color-text);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* Article Hero */
.article-hero{padding:clamp(36px,6vw,64px) 0 32px;background:linear-gradient(135deg,var(--color-bg-alt) 0%,var(--color-bg) 100%);border-bottom:1px solid var(--color-line)}
.article-hero .container{max-width:1000px}
.article-hero h1{font-size:clamp(1.8rem,3.2vw,2.5rem);font-weight:800;line-height:1.25;color:var(--color-primary-deep);margin-bottom:16px;max-width:820px;letter-spacing:.5px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:20px;font-size:.8125rem;color:var(--color-muted);padding-top:16px;border-top:1px solid var(--color-line)}
.article-meta .badge{background:rgba(224,165,38,.15);color:var(--color-primary);padding:4px 14px;border-radius:var(--radius-btn);font-weight:600;font-size:.75rem;border:1px solid rgba(224,165,38,.3)}
.article-meta i{margin-right:6px;color:var(--color-accent)}
.meta-item{display:inline-flex;align-items:center}
/* Content */
.article-content-wrap{padding:clamp(40px,5vw,64px) 0 clamp(60px,8vw,100px)}
.article-content-wrap .container{max-width:1000px}
.article-body{max-width:760px;margin:0 auto;background:var(--color-card);border-radius:var(--radius-card);padding:clamp(24px,4vw,48px);box-shadow:var(--shadow-card);border:1px solid var(--color-line)}
.article-body p{margin-bottom:1.2em;line-height:1.8;font-size:1rem;color:var(--color-text)}
.article-body h2{font-size:1.5rem;font-weight:700;margin:1.8em 0 .6em;color:var(--color-primary-deep)}
.article-body h3{font-size:1.2rem;font-weight:700;margin:1.5em 0 .5em;color:var(--color-primary)}
.article-body ul{margin:0 0 1.2em;padding-left:1.5em;list-style:disc}
.article-body ol{margin:0 0 1.2em;padding-left:1.5em;list-style:decimal}
.article-body li{margin-bottom:.4em;line-height:1.75}
.article-body blockquote{margin:1.5em 0;padding:16px 20px;background:var(--color-bg);border-left:3px solid var(--color-accent);border-radius:0 8px 8px 0;color:var(--color-muted);font-style:italic}
.article-body img{border-radius:var(--radius-img);margin:1.5em auto;height:auto}
.article-body a{color:var(--color-primary);border-bottom:2px solid var(--color-accent);transition:color .2s}
.article-body a:hover{color:var(--color-accent-dark)}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.875rem}
.article-body th{background:var(--color-primary);color:#fff;padding:10px 14px;text-align:left;font-weight:600}
.article-body td{padding:10px 14px;border-bottom:1px solid var(--color-line)}
.article-body tr:nth-child(even) td{background:var(--color-bg)}
.article-body code{font-family:var(--font-mono);background:var(--color-bg-alt);padding:2px 6px;border-radius:4px;font-size:.875em}
.article-body pre{background:var(--color-primary-deep);color:#E8F0ED;padding:20px;border-radius:8px;overflow-x:auto;margin:1.5em 0}
.article-body pre code{background:transparent;color:inherit;padding:0}
/* Not Found */
.not-found{text-align:center;padding:60px 20px}
.not-found-icon{width:80px;height:80px;border-radius:50%;background:var(--color-bg);display:flex;align-items:center;justify-content:center;margin:0 auto 24px;color:var(--color-accent);font-size:2rem}
.not-found h2{color:var(--color-primary);font-size:1.5rem;margin-bottom:8px}
.not-found p{color:var(--color-muted);margin-bottom:24px}
/* Tags */
.article-tags{max-width:760px;margin:24px auto 0;display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:var(--radius-btn);padding:4px 14px;font-size:.8125rem;color:var(--color-muted);transition:all .2s}
.tag:hover{border-color:var(--color-accent);color:var(--color-primary)}
/* Related */
.related-section{max-width:760px;margin:48px auto 0}
.section-head{margin-bottom:24px}
.eyebrow{font-family:var(--font-mono);font-size:.75rem;color:var(--color-accent);letter-spacing:.12em;text-transform:uppercase;display:block;margin-bottom:6px}
.section-head h2{font-size:1.5rem;font-weight:700;color:var(--color-primary-deep);letter-spacing:.5px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{background:var(--color-card);border:1px solid var(--color-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:box-shadow .25s,transform .25s,border-color .25s;display:block}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--color-accent)}
.related-card img{width:100%;height:132px;object-fit:cover}
.related-card-content{padding:16px}
.related-card h3{font-size:.9375rem;font-weight:600;line-height:1.5;margin-bottom:8px;color:var(--color-text);transition:color .2s}
.related-card:hover h3{color:var(--color-primary)}
.related-card .date{font-family:var(--font-mono);font-size:.75rem;color:var(--color-muted)}
/* Back Link */
.back-link{max-width:760px;margin:32px auto 0;text-align:center}
.back-link a{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--color-primary);padding:10px 20px;border-radius:var(--radius-btn);border:2px solid transparent;transition:color .2s,border-color .2s}
.back-link a:hover{color:var(--color-accent);border-color:var(--color-accent)}
/* Footer */
.site-footer{background:var(--color-primary-deep);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.06)}
.footer-brand h4{display:flex;align-items:center;gap:10px;color:#fff;font-size:1.125rem;font-weight:700;margin-bottom:16px}
.footer-logo{width:30px;height:24px;flex-shrink:0}
.footer-brand p{font-size:.875rem;line-height:1.7;color:rgba(255,255,255,.65);max-width:260px}
.footer-col h5,.footer-contact h5{color:#fff;font-size:.875rem;font-weight:700;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h5::after,.footer-contact h5::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--color-accent)}
.footer-col ul,.footer-contact ul{display:flex;flex-direction:column;gap:8px}
.footer-col a,.footer-contact li{font-size:.875rem;color:rgba(255,255,255,.7);transition:color .2s}
.footer-col a:hover{color:var(--color-accent)}
.footer-contact i{color:var(--color-accent);margin-right:10px;width:16px;text-align:center}
.footer-bottom{padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}
.footer-bottom p{font-size:.8125rem;color:rgba(255,255,255,.55)}
.footer-bottom .domain{font-family:var(--font-mono);font-size:.8125rem;color:rgba(255,255,255,.45)}
/* Responsive */
@media (max-width:1024px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .btn-nav-cta{display:inline-flex;height:40px;padding:0 16px;font-size:.8125rem}
  .brand-logo{left:50%;transform:translateX(-50%)}
  .nav-wrap{justify-content:space-between}
}
@media (max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .article-body{padding:20px}
  .article-hero h1{font-size:1.6rem}
  .article-content-wrap{padding:36px 0 60px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .brand-text{font-size:1rem}
  .article-meta{gap:12px}
  .article-tags{gap:8px}
  .article-body h2{font-size:1.3rem}
  .btn-nav-cta{display:none}
}

/* roulang page: category2 */
:root{
  --color-primary:#0E4C46;
  --color-primary-deep:#0A352F;
  --color-primary-light:#2A6B63;
  --color-accent:#E0A526;
  --color-accent-hover:#C8911F;
  --color-bg:#F6F4EF;
  --color-bg-alt:#EDEAE3;
  --color-card:#FFFFFF;
  --color-text:#1F2A27;
  --color-muted:#5E6E68;
  --color-border:#E2DED5;
  --color-divider:#E8E4DA;
  --color-success:#2F7D5D;
  --radius-card:8px;
  --radius-btn:4px;
  --radius-img:6px;
  --shadow-card:0 1px 2px rgba(14,76,70,0.06),0 4px 12px rgba(14,76,70,0.05);
  --shadow-hover:0 8px 28px rgba(14,76,70,0.14);
  --transition:all .25s ease;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--color-bg);
  color:var(--color-text);
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:var(--transition);}
ul,ol{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section-pad{padding:clamp(60px,8vw,110px) 0;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-weight:700;font-size:.9375rem;letter-spacing:.02em;
  cursor:pointer;border:none;transition:var(--transition);gap:8px;white-space:nowrap;
}
.btn-primary{background:var(--color-accent);color:var(--color-primary-deep);}
.btn-primary:hover{background:var(--color-accent-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(224,165,38,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border:2px solid var(--color-primary);color:var(--color-primary);}
.btn-outline:hover{border-color:var(--color-accent);color:var(--color-accent);transform:translateY(-2px);}
.btn-white-outline{background:transparent;border:2px solid #fff;color:#fff;}
.btn-white-outline:hover{background:rgba(255,255,255,.2);border-color:#fff;transform:translateY(-2px);}
.btn-lg{height:54px;padding:0 34px;font-size:1rem;}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(226,222,213,.7);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 1px 4px rgba(14,76,70,.08);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;position:relative;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:34px;}
.nav-left a,.nav-right a{
  font-size:.9375rem;font-weight:600;color:var(--color-text);
  padding:6px 2px;position:relative;letter-spacing:.01em;
}
.nav-left a::after,.nav-right a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--color-accent);transition:width .3s ease;
}
.nav-left a:hover::after,.nav-right a:hover::after{width:100%;}
.nav-left a.active,.nav-right a.active{color:var(--color-primary);}
.nav-left a.active::after,.nav-right a.active::after{width:100%;background:var(--color-accent);}
.brand-logo{
  position:absolute;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;padding:8px 14px;
  border-radius:var(--radius-btn);
}
.brand-icon{width:30px;height:26px;flex-shrink:0;}
.brand-text{font-weight:800;font-size:1.2rem;color:var(--color-primary);letter-spacing:.02em;white-space:nowrap;}
.brand-logo:hover .brand-text{color:var(--color-primary-deep);}
.nav-toggle{
  display:none;width:44px;height:44px;background:transparent;border:none;
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;background:var(--color-primary);border-radius:2px;
  transition:var(--transition);
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* Mobile menu */
.mobile-menu{
  display:none;background:var(--color-card);padding:0;
  border-bottom:1px solid var(--color-divider);box-shadow:0 8px 20px rgba(14,76,70,.06);
}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:block;padding:16px 24px;font-size:1.05rem;font-weight:600;
  color:var(--color-text);border-bottom:1px solid var(--color-divider);
}
.mobile-menu a.active{color:var(--color-primary);background:rgba(14,76,70,.05);}
.mobile-menu a:last-child{border-bottom:none;}
.mobile-menu .brand-note{padding:14px 24px;font-size:.85rem;color:var(--color-muted);border-bottom:1px solid var(--color-divider);}

/* ===== Category Hero ===== */
.cat-hero{
  position:relative;padding:150px 0 80px;
  background:linear-gradient(120deg,rgba(10,53,47,.92) 0%,rgba(14,76,70,.8) 55%,rgba(14,76,70,.6) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#F5F2EA;
}
.cat-hero::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:1px;
  background:rgba(224,165,38,.4);
}
.cat-hero .breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:.85rem;margin-bottom:22px;
  color:rgba(245,242,234,.7);font-family:var(--font-mono);
}
.cat-hero .breadcrumb a{color:rgba(245,242,234,.7);}
.cat-hero .breadcrumb a:hover{color:var(--color-accent);}
.cat-hero .breadcrumb .sep{color:rgba(224,165,38,.8);}
.cat-hero .breadcrumb .current{color:#fff;font-weight:600;}
.cat-hero h1{
  font-size:clamp(2rem,4.2vw,3.2rem);font-weight:800;line-height:1.18;
  max-width:780px;margin-bottom:18px;
}
.cat-hero h1 .accent{color:var(--color-accent);}
.cat-hero .hero-sub{
  font-size:clamp(1rem,1.6vw,1.15rem);max-width:640px;line-height:1.7;
  color:rgba(245,242,234,.85);margin-bottom:6px;
}
.cat-hero .hero-meta{
  display:flex;gap:24px;flex-wrap:wrap;margin-top:28px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.15);
}
.cat-hero .hero-meta span{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;color:rgba(245,242,234,.8);}
.cat-hero .hero-meta i{color:var(--color-accent);}

/* ===== Category Body ===== */
.cat-body{padding:clamp(50px,7vw,90px) 0;}
.cat-body .grid-x{display:flex;flex-wrap:wrap;margin:0 -15px;}
.cat-body .cell{padding:0 15px;width:100%;}
@media (min-width:64em){
  .cat-body .cell-large{width:66.6667%;}
  .cat-body .cell-side{width:33.3333%;}
}

/* ===== Solution Overview ===== */
.solution-overview{
  background:var(--color-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:34px;margin-bottom:34px;
  border:1px solid var(--color-border);
}
.solution-overview .eyebrow{
  font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--color-accent);font-weight:700;margin-bottom:10px;font-family:var(--font-mono);
}
.solution-overview h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;margin-bottom:16px;color:var(--color-text);
}
.solution-overview p{color:var(--color-muted);line-height:1.85;margin-bottom:14px;}
.solution-overview p:last-child{margin-bottom:0;}
.overview-media{
  margin-top:22px;border-radius:var(--radius-img);overflow:hidden;position:relative;
}
.overview-media img{width:100%;height:auto;min-height:260px;object-fit:cover;}
.overview-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-img);
  box-shadow:inset 0 0 0 1px rgba(14,76,70,.08);
}

/* ===== Solution List ===== */
.solution-list{margin-bottom:44px;}
.solution-list .section-title{
  display:flex;align-items:baseline;gap:14px;margin-bottom:22px;
}
.solution-list .section-title .eyebrow{
  font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--color-accent);font-weight:700;font-family:var(--font-mono);
}
.solution-list .section-title h2{font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;}
.sol-card{
  display:flex;gap:22px;align-items:flex-start;
  background:var(--color-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:26px 28px;margin-bottom:18px;
  border:1px solid var(--color-border);transition:var(--transition);
}
.sol-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.sol-card .sol-icon{
  width:56px;height:56px;border-radius:14px;background:rgba(14,76,70,.08);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-size:1.4rem;color:var(--color-primary);
}
.sol-card:nth-child(2) .sol-icon{background:rgba(224,165,38,.12);color:var(--color-accent-hover);}
.sol-card:nth-child(3) .sol-icon{background:rgba(47,125,93,.1);color:var(--color-success);}
.sol-card .sol-body h3{font-size:1.2rem;font-weight:700;margin-bottom:8px;color:var(--color-text);}
.sol-card .sol-body p{font-size:.9375rem;color:var(--color-muted);line-height:1.75;margin-bottom:10px;}
.sol-card .sol-link{
  font-size:.875rem;font-weight:600;color:var(--color-primary);
  display:inline-flex;align-items:center;gap:6px;
}
.sol-card .sol-link:hover{color:var(--color-accent-hover);}

/* ===== Process Steps ===== */
.process-block{
  background:var(--color-primary-deep);border-radius:var(--radius-card);
  padding:40px 34px;margin-bottom:44px;color:#F5F2EA;position:relative;overflow:hidden;
}
.process-block::before{
  content:"";position:absolute;top:-40px;right:-40px;width:160px;height:160px;
  border:2px solid rgba(224,165,38,.2);border-radius:50%;
}
.process-block .eyebrow{
  font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--color-accent);font-weight:700;margin-bottom:10px;font-family:var(--font-mono);
}
.process-block h2{font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:700;margin-bottom:28px;}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1;}
.process-step{position:relative;padding-left:26px;}
.process-step::before{
  content:"";position:absolute;left:0;top:4px;width:12px;height:12px;border-radius:50%;
  background:var(--color-accent);box-shadow:0 0 0 4px rgba(224,165,38,.2);
}
.process-step .step-num{
  font-family:var(--font-mono);font-size:.8rem;color:var(--color-accent);font-weight:700;letter-spacing:.08em;
}
.process-step .step-title{font-size:1.05rem;font-weight:700;margin:8px 0 6px;}
.process-step .step-desc{font-size:.875rem;color:rgba(245,242,234,.7);line-height:1.6;}

/* ===== Scene List ===== */
.scene-block{margin-bottom:44px;background:var(--color-bg-alt);border-radius:var(--radius-card);padding:34px;}
.scene-block .eyebrow{
  font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--color-accent);font-weight:700;margin-bottom:10px;font-family:var(--font-mono);
}
.scene-block h2{font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:700;margin-bottom:20px;}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.scene-item{
  background:var(--color-card);border-radius:8px;padding:22px 20px;
  border:1px solid var(--color-border);transition:var(--transition);
}
.scene-item:hover{border-color:var(--color-accent);box-shadow:var(--shadow-hover);}
.scene-item i{font-size:1.5rem;color:var(--color-accent);margin-bottom:12px;}
.scene-item h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;}
.scene-item p{font-size:.875rem;color:var(--color-muted);line-height:1.65;}

/* ===== FAQ ===== */
.faq-block .faq-title{
  font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:700;margin-bottom:22px;
}
.accordion{border:none;background:transparent;}
.accordion-item{background:var(--color-card);border-radius:8px;margin-bottom:12px;overflow:hidden;border:1px solid var(--color-border);transition:var(--transition);}
.accordion-item.is-active{border-color:var(--color-primary);background:#F2F0E8;}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;
  font-size:1rem;font-weight:600;color:var(--color-text);
  padding:18px 22px;background:transparent;border:none;position:relative;
  min-height:56px;
}
.accordion-title::after{
  content:"+";font-size:1.5rem;font-weight:400;color:var(--color-accent);
  transition:transform .3s ease;position:static;margin-top:0;line-height:1;
}
.accordion-item.is-active .accordion-title{color:var(--color-primary);background:transparent;}
.accordion-item.is-active .accordion-title::after{content:"×";transform:rotate(0deg);}
.accordion-content{
  padding:0 22px 20px;color:var(--color-muted);font-size:.9375rem;line-height:1.8;border-top:1px solid var(--color-divider);background:#F2F0E8;
}
.accordion-content p{margin-bottom:8px;}
.accordion-content p:last-child{margin-bottom:0;}

/* ===== Sidebar ===== */
.side-card{
  background:var(--color-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:26px;margin-bottom:22px;
  border:1px solid var(--color-border);
}
.side-card h3{font-size:1.05rem;font-weight:700;margin-bottom:16px;color:var(--color-text);position:relative;padding-bottom:12px;}
.side-card h3::after{content:"";position:absolute;left:0;bottom:0;width:36px;height:3px;background:var(--color-accent);border-radius:2px;}
.side-links li{margin-bottom:2px;}
.side-links a{
  display:flex;align-items:center;gap:10px;padding:10px 0;font-size:.9375rem;
  color:var(--color-text);border-bottom:1px solid var(--color-divider);
}
.side-links a:last-child{border-bottom:none;}
.side-links a:hover{color:var(--color-primary);padding-left:6px;}
.side-links a .arrow{color:var(--color-accent);font-size:.8rem;}
.side-links a.active-link{color:var(--color-primary);font-weight:600;}
.cta-card{
  background:var(--color-primary-deep);border-color:transparent;color:#F5F2EA;text-align:center;
  border-radius:8px;padding:32px 24px;position:relative;overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;top:-30px;right:-30px;width:100px;height:100px;
  border:2px solid rgba(224,165,38,.25);border-radius:50%;
}
.cta-card::after{
  content:"";position:absolute;bottom:-20px;left:-20px;width:70px;height:70px;
  border:1px solid rgba(255,255,255,.12);border-radius:50%;
}
.cta-card h3{color:#fff;font-size:1.2rem;margin-bottom:10px;}
.cta-card h3::after{background:var(--color-accent);left:50%;transform:translateX(-50%);}
.cta-card p{font-size:.875rem;color:rgba(245,242,234,.75);margin-bottom:22px;line-height:1.7;position:relative;z-index:1;}
.cta-card .btn{width:100%;position:relative;z-index:1;}
.contact-card ul li{
  display:flex;align-items:center;gap:12px;padding:10px 0;
  font-size:.9rem;color:var(--color-muted);border-bottom:1px solid var(--color-divider);
}
.contact-card ul li:last-child{border-bottom:none;}
.contact-card i{color:var(--color-accent);width:18px;text-align:center;flex-shrink:0;}

/* ===== CTA Strip ===== */
.cta-strip{
  background:linear-gradient(120deg,var(--color-primary-deep),var(--color-primary-light));
  padding:clamp(44px,6vw,64px) 0;color:#fff;position:relative;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(224,165,38,.6),transparent);
}
.cta-strip::after{
  content:"";position:absolute;bottom:-80px;right:80px;width:240px;height:240px;
  border:2px solid rgba(224,165,38,.15);border-radius:50%;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:800;margin-bottom:8px;}
.cta-inner p{color:rgba(245,242,234,.8);font-size:1rem;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== Footer ===== */
.site-footer{background:var(--color-primary-deep);color:rgba(255,255,255,.8);padding:64px 0 0;font-size:.9rem;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand h4{
  display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:800;
  color:#fff;margin-bottom:16px;
}
.footer-brand p{color:rgba(255,255,255,.6);line-height:1.7;max-width:320px;}
.footer-col h5,.footer-contact h5{
  color:#fff;font-size:.95rem;font-weight:700;margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul li,.footer-contact ul li{margin-bottom:10px;}
.footer-col ul a{color:rgba(255,255,255,.65);transition:var(--transition);}
.footer-col ul a:hover{color:var(--color-accent);padding-left:4px;}
.footer-contact ul li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.65);}
.footer-contact ul i{color:var(--color-accent);width:16px;text-align:center;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 0;color:rgba(255,255,255,.45);font-size:.8rem;flex-wrap:wrap;gap:10px;
}
.footer-bottom .domain{font-family:var(--font-mono);letter-spacing:.04em;}
.footer-logo{width:30px;height:26px;flex-shrink:0;}

/* ===== Responsive ===== */
@media (max-width:63.99em){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:flex;position:absolute;left:8px;top:14px;}
  .brand-logo{position:static;transform:none;justify-content:center;margin:0 auto;}
  .header-inner{justify-content:center;}
  .process-grid{grid-template-columns:repeat(2,1fr);gap:30px 20px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cat-hero{padding:130px 0 60px;}
}
@media (max-width:39.99em){
  .container{padding:0 18px;}
  .cat-hero{padding:120px 0 50px;}
  .cat-hero h1{font-size:1.9rem;}
  .solution-overview{padding:24px 20px;}
  .sol-card{flex-direction:column;gap:16px;padding:22px 20px;}
  .process-grid{grid-template-columns:1fr;gap:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .process-block{padding:30px 22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{justify-content:center;text-align:center;}
  .mobile-menu a{padding:14px 18px;font-size:1rem;}
}

/* ===== Animations ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px);}
  to{opacity:1;transform:translateY(0);}
}
.cat-hero .container>*{animation:fadeUp .7s ease both;}
.cat-hero .container>*:nth-child(2){animation-delay:.1s;}
.cat-hero .container>*:nth-child(3){animation-delay:.2s;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}

/* roulang page: category3 */
:root {
  --color-primary: #0E4C46;
  --color-primary-deep: #0A352F;
  --color-primary-light: #2A6B63;
  --color-accent: #E0A526;
  --color-accent-dark: #C8911F;
  --color-bg: #F6F4EF;
  --color-bg-alt: #EDEAE3;
  --color-card: #FFFFFF;
  --color-text: #1F2A27;
  --color-muted: #5E6E68;
  --color-border: #E2DED5;
  --color-line: #E8E4DA;
  --color-white: #F5F2EA;
  --radius-card: 8px;
  --radius-btn: 4px;
  --shadow-card: 0 1px 2px rgba(14,76,70,0.06), 0 4px 12px rgba(14,76,70,0.05);
  --shadow-hover: 0 8px 28px rgba(14,76,70,0.14);
  --section-space: clamp(60px, 8vw, 110px);
  --container-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--color-primary); }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.site-header {
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  height: 72px;
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 1px 4px rgba(14,76,70,0.08); }
.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
  z-index: 2;
}
.logo-mark { width: 30px; height: 26px; flex-shrink: 0; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 8px; }
.nav-left a, .nav-right a {
  position: relative;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-left a:hover, .nav-right a:hover { color: var(--color-primary); }
.nav-left a.active, .nav-right a.active { color: var(--color-primary); border-bottom-color: var(--color-accent); }
.nav-left a::after, .nav-right a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}
.nav-left a:hover::after, .nav-right a:hover::after { transform: scaleX(1); }
.nav-left a.active::after, .nav-right a.active::after { transform: scaleX(1); }
.mobile-toggle {
  display: none;
  width: 44px; height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  border-radius: var(--radius-btn);
}
.mobile-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-primary);
  margin: 5px auto;
  transition: transform 0.3s ease, opacity 0.3s ease;
  border-radius: 2px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 0.875rem;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease;
}
.header-cta:hover { background: var(--color-primary-deep); color: #fff; transform: translateY(-1px); }
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  padding: 32px 24px;
  overflow-y: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 16px 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-line);
}
.mobile-menu a.active { color: var(--color-primary); border-left: 3px solid var(--color-accent); padding-left: 12px; }
.mobile-menu .mobile-menu-cta { margin-top: 24px; background: var(--color-accent); color: var(--color-primary); text-align: center; border-radius: var(--radius-btn); padding: 14px 20px; font-weight: 700; }
/* ===== Hero/Banner ===== */
.page-banner {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: clamp(56px, 8vw, 100px) 0;
  color: #fff;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(10,53,47,0.94) 30%, rgba(14,76,70,0.72) 70%, rgba(224,165,38,0.25) 100%);
}
.page-banner .container { position: relative; z-index: 2; }
.banner-inner { max-width: 780px; }
.banner-overline {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.banner-overline::before { content: ""; width: 32px; height: 2px; background: var(--color-accent); }
.page-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 14px;
  color: #fff;
  letter-spacing: 0.02em;
}
.page-banner h1 span { color: var(--color-accent); }
.banner-sub {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 620px;
  margin-bottom: 28px;
}
.banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }
/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.22s ease;
  gap: 8px;
}
.btn-primary { background: var(--color-accent); color: var(--color-primary); }
.btn-primary:hover { background: var(--color-accent-dark); color: var(--color-primary); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(224,165,38,0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); background: rgba(224,165,38,0.06); }
.btn-white-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.8); }
.btn-white-outline:hover { background: rgba(255,255,255,0.15); color: #fff; border-color: #fff; }
/* ===== Main Content Layout ===== */
.category-main { padding: var(--section-space) 0; background: var(--color-bg); }
.category-grid { display: flex; gap: 40px; align-items: flex-start; }
.category-content { flex: 1; min-width: 0; }
.category-sidebar { width: 360px; flex-shrink: 0; position: sticky; top: 96px; }
/* ===== Content Sections ===== */
.content-section { margin-bottom: var(--section-space); }
.content-section:last-child { margin-bottom: 0; }
.content-section .section-label {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.content-section .section-label::before { content: ""; width: 24px; height: 2px; background: var(--color-accent); }
.content-section h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0 0 18px;
}
.content-section p { color: var(--color-muted); font-size: 1rem; line-height: 1.85; margin-bottom: 16px; }
.section-figure {
  border-radius: var(--radius-card);
  overflow: hidden;
  margin: 24px 0 8px;
  box-shadow: var(--shadow-card);
  background: var(--color-card);
}
.section-figure img { width: 100%; height: 260px; object-fit: cover; }
.section-figure figcaption {
  padding: 10px 16px;
  font-size: 0.8125rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}
.feature-list { list-style: none; padding: 0; margin: 16px 0; }
.feature-list li { position: relative; padding: 8px 0 8px 30px; color: var(--color-text); font-size: 0.9375rem; line-height: 1.7; }
.feature-list li::before {
  content: "+";
  position: absolute;
  left: 0;
  top: 8px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(224,165,38,0.12);
  border-radius: 50%;
}
/* ===== Sidebar ===== */
.sidebar-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--color-line);
}
.sidebar-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--color-accent); font-size: 0.9375rem; }
.sidebar-links { list-style: none; margin: 0; padding: 0; }
.sidebar-links li { border-bottom: 1px solid var(--color-line); }
.sidebar-links li:last-child { border-bottom: none; }
.sidebar-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 4px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.2s ease;
}
.sidebar-links a:hover { color: var(--color-accent); padding-left: 8px; }
.sidebar-links a i { font-size: 0.75rem; color: var(--color-muted); opacity: 0.6; }
.cta-box {
  background: var(--color-primary-deep);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  color: #fff;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
}
.cta-box i {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 14px;
  display: block;
}
.cta-box h4 { font-size: 1.125rem; font-weight: 700; margin: 0 0 8px; }
.cta-box p { font-size: 0.875rem; color: rgba(255,255,255,0.75); line-height: 1.7; margin: 0 0 18px; }
.cta-box .btn { width: 100%; }
.contact-box { background: var(--color-bg-alt); border: 1px solid var(--color-line); border-radius: var(--radius-card); padding: 24px; }
.contact-box h3 { font-size: 1.0625rem; font-weight: 700; color: var(--color-primary); margin: 0 0 14px; }
.contact-box ul { list-style: none; margin: 0; padding: 0; }
.contact-box li { display: flex; align-items: flex-start; gap: 10px; padding: 7px 0; font-size: 0.875rem; color: var(--color-muted); line-height: 1.6; }
.contact-box li i { color: var(--color-accent); width: 16px; margin-top: 4px; }
/* ===== FAQ ===== */
.faq-section { background: var(--color-bg-alt); padding: var(--section-space) 0; }
.faq-section .container { max-width: 860px; }
.faq-head { text-align: center; margin-bottom: 40px; }
.faq-head .section-label {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.faq-head .section-label::before, .faq-head .section-label::after { content: ""; width: 24px; height: 2px; background: var(--color-accent); }
.faq-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin: 0; color: var(--color-text); }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--color-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item[open] { border-color: var(--color-primary); box-shadow: var(--shadow-hover); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  transition: color 0.2s ease;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-accent);
  transition: transform 0.3s ease;
  margin-left: 16px;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { color: var(--color-primary); }
.faq-item .faq-answer { padding: 0 24px 20px; color: var(--color-muted); font-size: 0.9375rem; line-height: 1.8; }
/* ===== CTA Strip ===== */
.cta-strip { background: var(--color-primary); padding: 52px 0; color: #fff; }
.cta-strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-strip h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 700; margin: 0 0 8px; }
.cta-strip p { color: rgba(255,255,255,0.78); margin: 0; font-size: 0.9375rem; }
.cta-strip .btn { flex-shrink: 0; }
/* ===== Footer ===== */
.site-footer { background: var(--color-primary-deep); color: rgba(255,255,255,0.8); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 48px; }
.footer-brand h4 { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 1.25rem; font-weight: 800; margin: 0 0 16px; }
.footer-logo { width: 32px; height: 26px; flex-shrink: 0; }
.footer-brand p { font-size: 0.875rem; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 260px; margin: 0; }
.footer-col h5, .footer-contact h5 { color: #fff; font-size: 0.9375rem; font-weight: 700; margin: 0 0 16px; letter-spacing: 0.04em; }
.footer-col ul, .footer-contact ul { list-style: none; margin: 0; padding: 0; }
.footer-col li, .footer-contact li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.65); font-size: 0.875rem; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--color-accent); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.875rem; color: rgba(255,255,255,0.65); line-height: 1.6; }
.footer-contact li i { color: var(--color-accent); width: 16px; margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { margin: 0; font-size: 0.8125rem; color: rgba(255,255,255,0.55); }
.footer-bottom .domain { font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace; font-size: 0.8125rem; color: rgba(255,255,255,0.35); }
/* ===== Responsive ===== */
@media (max-width: 64em) {
  .nav-left a, .nav-right a { padding: 8px 10px; font-size: 0.875rem; }
  .brand-logo { font-size: 1rem; }
  .brand-logo .logo-mark { width: 26px; height: 24px; }
  .category-grid { flex-direction: column; }
  .category-sidebar { width: 100%; position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .sidebar-card, .cta-box, .contact-box { margin-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 40em) {
  .container { padding: 0 16px; }
  .nav-left, .nav-right, .header-cta { display: none; }
  .mobile-toggle { display: block; }
  .brand-logo { position: relative; left: auto; transform: none; margin: 0 auto; }
  .nav-wrap { justify-content: space-between; }
  .brand-logo .logo-mark { display: block; }
  .banner-inner { text-align: left; }
  .page-banner { padding: 48px 0; }
  .banner-actions .btn { width: 100%; }
  .content-section .section-figure img { height: 180px; }
  .faq-item summary { padding: 14px 16px; font-size: 0.9375rem; }
  .faq-item .faq-answer { padding: 0 16px 16px; }
  .cta-strip-inner { flex-direction: column; text-align: center; }
  .cta-strip .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .category-sidebar { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}