/* roulang page: index */
:root {
  --bg-void: #131416;
  --bg-base: #17191c;
  --bg-card: #1e2126;
  --bg-elevated: #25292f;
  --accent: #d3a57a;
  --accent-strong: #ecc197;
  --accent-dim: rgba(211, 165, 122, 0.12);
  --green: #7fa08a;
  --green-dim: rgba(127, 160, 138, 0.14);
  --text-primary: #e8e0d5;
  --text-soft: #b4aca1;
  --text-dim: #89817a;
  --line: #34383e;
  --line-soft: #272a2f;
  --danger: #c08774;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 18px;
  --radius-round: 999px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", SimSun, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --container-w: 1200px;
  --spacer: 92px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-void);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

input, textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 28px;
}

.container--wide {
  max-width: 1360px;
}

.mono {
  font-family: var(--font-mono);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 12px;
  font-family: var(--font-mono);
  border-radius: var(--radius-round);
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  color: var(--text-soft);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
  line-height: 1.5;
}

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

.btn-sm {
  padding: 7px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: var(--radius);
}

.btn-primary {
  background: var(--accent);
  color: #201b17;
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(211, 165, 122, 0.22);
}

.btn-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(211, 165, 122, 0.3);
  color: #201b17;
}

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

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--line);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

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

.btn-ghost:hover {
  color: var(--accent);
  background: var(--accent-dim);
  border-color: var(--accent-dim);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(19, 20, 22, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(19, 20, 22, 0.92);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

.brand {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  line-height: 1;
  padding: 6px 0;
  position: relative;
}

.brand::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.brand:hover {
  color: var(--text-primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 32px;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  transition: all 0.22s ease;
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-dim);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.header-cta {
  margin-left: auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 112px 0 0;
  min-height: 88vh;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--bg-void);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(211,165,122,0.05) 1px, transparent 1px),
    linear-gradient(rgba(211,165,122,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
  position: relative;
  padding-top: 20px;
  padding-bottom: 72px;
}

.hero-text {
  padding-left: 8px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 14px;
  border: 1px dashed rgba(211,165,122,0.45);
  border-radius: var(--radius-round);
  margin-bottom: 28px;
  font-family: var(--font-mono);
}

.hero-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 1.6s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.8); opacity: 0.6; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-title span {
  color: var(--accent);
  position: relative;
}

.hero-subtitle {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
  max-width: 530px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.note-dot {
  width: 10px;
  height: 10px;
  background: var(--green);
  border-radius: 50%;
}

.hero-visual {
  position: relative;
  height: 100%;
  min-height: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(19,20,22,0.1) 0%, rgba(19,20,22,0.35) 55%, rgba(19,20,22,0.9) 100%);
}

.hero-overlay-card {
  position: absolute;
  left: 28px;
  bottom: 28px;
  right: 28px;
  z-index: 2;
  background: rgba(30, 33, 38, 0.82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow-md);
}

.overlay-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 10px;
}

.hero-overlay-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.hero-overlay-card p {
  font-size: 14px;
  color: var(--text-soft);
}

/* ---------- Section base ---------- */
.section {
  padding: var(--spacer) 0;
}

.section--switch {
  background: var(--bg-base);
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
  position: relative;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  background: var(--accent-dim);
  padding: 5px 14px;
  border-radius: 3px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.8;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

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

/* ---------- Feature cards ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--line);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-media {
  height: 170px;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.feature-card:hover .feature-media img {
  transform: scale(1.04);
}

.feature-body {
  padding: 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.feature-index {
  position: absolute;
  top: -20px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  color: rgba(211,165,122,0.12);
  line-height: 1;
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-soft);
}

.feature-more {
  margin-top: auto;
  padding-top: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-more::after {
  content: "→";
  transition: transform 0.25s ease;
}

.feature-card:hover .feature-more::after {
  transform: translateX(4px);
}

/* ---------- Process ---------- */
.process-section {
  background: var(--bg-base);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  counter-reset: step;
}

.step-item {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all 0.3s ease;
}

.step-item::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--bg-void);
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(211,165,122,0.3);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(211,165,122,0.6);
  margin-bottom: 18px;
  display: block;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.75;
}

/* ---------- Stats ---------- */
.stats-section {
  position: relative;
  padding: var(--spacer) 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.stats-overlay {
  position: absolute;
  inset: 0;
  background: rgba(19, 20, 22, 0.82);
  backdrop-filter: blur(3px);
}

.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  border: 1px dashed rgba(255,255,255,0.18);
  border-radius: var(--radius-lg);
  background: rgba(30, 33, 38, 0.55);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
}

.stat-item:hover {
  border-color: var(--accent);
  background: rgba(30, 33, 38, 0.8);
}

.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-soft);
  letter-spacing: 0.04em;
}

/* ---------- Category cards ---------- */
.category-section {
  background: var(--bg-void);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.category-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  color: var(--text-primary);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(211,165,122,0.35);
  color: var(--text-primary);
}

.category-img {
  height: 210px;
  overflow: hidden;
  position: relative;
}

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

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

.category-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(19,20,22,0.75) 100%);
}

.category-info {
  padding: 24px 26px 28px;
  position: relative;
}

.category-info .section-tag {
  margin-bottom: 12px;
}

.category-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 10px;
}

.category-desc {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 16px;
}

.category-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s ease;
}

.category-link::after {
  content: "→";
}

.category-card:hover .category-link {
  gap: 10px;
}

/* ---------- News list ---------- */
.news-section {
  background: var(--bg-base);
  border-top: 1px solid var(--line-soft);
}

.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: all 0.28s ease;
  position: relative;
  overflow: hidden;
}

.news-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.news-card:hover {
  transform: translateX(4px);
  border-color: rgba(211,165,122,0.25);
  box-shadow: var(--shadow-sm);
}

.news-card:hover::before {
  opacity: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.news-cat {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--accent-dim);
  padding: 3px 10px;
  border-radius: 3px;
}

.news-time {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.news-title {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-title a {
  color: var(--text-primary);
}

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

.news-excerpt {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-empty {
  grid-column: 1 / -1;
  padding: 60px 30px;
  text-align: center;
  font-size: 15px;
  color: var(--text-dim);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item:hover {
  border-color: rgba(211,165,122,0.3);
}

.faq-item details > summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  position: relative;
  transition: all 0.3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent);
  transition: all 0.3s ease;
}

.faq-icon::before {
  width: 12px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 12px;
}

.faq-item details[open] .faq-icon {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.faq-item details[open] .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-soft);
  border-top: 1px dashed var(--line-soft);
  padding-top: 16px;
  margin-top: 0;
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  padding: 0;
  overflow: hidden;
}

.cta-band {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: var(--spacer) 0;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(19,20,22,0.92) 30%, rgba(19,20,22,0.65) 100%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.cta-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent);
  border: 1px dashed var(--accent);
  padding: 5px 14px;
  border-radius: 3px;
  margin-bottom: 18px;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.cta-desc {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.85;
  margin-bottom: 30px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-void);
  border-top: 1px solid var(--line-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding: 64px 28px 44px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 300px;
}

.footer-links,
.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-label {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-soft);
}

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

.footer-meta p {
  font-size: 14px;
  color: var(--text-soft);
}

.footer-bottom {
  border-top: 1px solid var(--line-soft);
  padding: 22px 0;
}

.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root {
    --spacer: 72px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    min-height: 380px;
  }

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

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

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

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

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(19, 20, 22, 0.97);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    backdrop-filter: blur(20px);
    z-index: 199;
    margin-left: 0;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .hero {
    padding-top: 88px;
  }

  .hero-grid {
    padding-bottom: 48px;
  }

  .hero-title {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .hero-visual {
    min-height: 300px;
  }

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

  .news-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

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

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

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

  .hero-actions .btn {
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .hero-overlay-card {
    left: 16px;
    right: 16px;
    bottom: 16px;
    padding: 18px;
  }
}

/* roulang page: article */
/* ====== Design Tokens ====== */
:root {
  --bg: #f6f1e7;
  --bg-warm: #efe5d3;
  --surface: #fffcf6;
  --surface-soft: #fbf6ee;
  --ink: #2b2115;
  --ink-soft: #756653;
  --ink-muted: #9b8d79;
  --line: #d9c9b1;
  --line-light: #e9dcc8;
  --line-dark: #b7a88e;
  --brand: #855a32;
  --brand-dark: #5d3d1e;
  --brand-soft: #c29a68;
  --accent: #a8513a;
  --accent-soft: #e1b49a;
  --green: #5b7a5c;
  --success: #4d7c5a;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 12px rgba(43,33,21,0.07);
  --shadow-md: 0 10px 35px rgba(43,33,21,0.10);
  --shadow-lg: 0 18px 50px rgba(43,33,21,0.15);
  --section-space: 90px;
  --section-space-sm: 60px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, "Courier New", monospace;
}

/* ====== Reset & Base ====== */
*, *::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: 16px;
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse at 15% 20%, rgba(133,90,50,0.04) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 75%, rgba(168,81,58,0.03) 0%, transparent 50%);
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(rgba(133,90,50,0.025) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
  z-index: 9999;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color .25s ease;
}
a:hover {
  color: var(--brand-dark);
}
ul, ol {
  padding-left: 1.4em;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}
::selection {
  background: rgba(133,90,50,0.15);
  color: var(--ink);
}
:focus-visible {
  outline: 3px solid rgba(133,90,50,0.35);
  outline-offset: 2px;
}

/* ====== Container ====== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.container.shrink {
  max-width: 880px;
}

/* ====== Header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,252,246,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 2px solid var(--line);
  box-shadow: 0 2px 22px rgba(43,33,21,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}
.brand {
  font-size: 1.42rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--brand-dark);
  position: relative;
  white-space: nowrap;
}
.brand::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--brand) 0 6px, transparent 6px 10px);
  border-radius: 2px;
}
.brand:hover {
  color: var(--brand);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
  border-radius: 999px;
  border: 2px solid transparent;
  transition: all .3s ease;
}
.nav-link:hover {
  color: var(--brand-dark);
  background: rgba(133,90,50,0.08);
}
.nav-link.active {
  color: var(--brand-dark);
  background: rgba(133,90,50,0.12);
  border-color: rgba(133,90,50,0.2);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta {
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border: 2px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.nav-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background: var(--brand-dark);
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ====== Buttons ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all .3s ease;
  cursor: pointer;
  text-align: center;
  line-height: 1.4;
}
.btn-sm {
  padding: 7px 18px;
  font-size: 0.86rem;
}
.btn-lg {
  padding: 15px 36px;
  font-size: 1.05rem;
  border-radius: var(--radius);
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  box-shadow: 0 4px 0 var(--brand-dark), 0 6px 18px rgba(133,90,50,0.3);
}
.btn-primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 0 var(--brand-dark), 0 10px 26px rgba(133,90,50,0.35);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--brand-dark), 0 2px 8px rgba(133,90,50,0.2);
}
.btn-outline {
  background: transparent;
  color: var(--brand-dark);
  border-color: var(--brand);
}
.btn-outline:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(133,90,50,0.25);
}

/* ====== Badge / Tag ====== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--brand-dark);
  background: rgba(133,90,50,0.12);
  border: 1.5px solid rgba(133,90,50,0.3);
  border-radius: 999px;
  text-transform: uppercase;
}
.badge-brand {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--surface);
  border: 1.5px solid var(--line);
  color: var(--ink-soft);
}
.tag-outline {
  background: transparent;
  border-style: dashed;
  color: var(--ink-soft);
}
.tag-solid {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

/* ====== Article Hero ====== */
.article-hero {
  position: relative;
  padding: 105px 0 90px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
  border-bottom: 4px solid var(--brand);
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(38,28,18,0.88) 10%, rgba(76,52,30,0.62) 60%, rgba(133,90,50,0.35) 100%);
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 26px;
  letter-spacing: 0.03em;
}
.breadcrumb a {
  color: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.3);
}
.breadcrumb a:hover {
  color: #fff;
  border-color: #fff;
}
.breadcrumb .sep {
  opacity: 0.5;
  font-size: 0.7rem;
}
.breadcrumb .current {
  color: var(--accent-soft);
}
.article-hero .badge {
  margin-bottom: 16px;
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.45);
  color: #fff;
  backdrop-filter: blur(4px);
}
.article-hero h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  max-width: 780px;
  color: #fff;
  text-shadow: 0 2px 18px rgba(0,0,0,0.2);
}
.article-hero .lead-desc {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.75;
  color: rgba(255,255,255,0.88);
  max-width: 680px;
  margin-bottom: 24px;
}
.article-meta-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.72);
}
.article-meta-line i {
  margin-right: 6px;
  color: var(--accent-soft);
}
.article-meta-line span {
  display: inline-flex;
  align-items: center;
}

/* ====== Article Main ====== */
.article-main {
  padding: 70px 0 30px;
}
.article-body {
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--ink);
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px 54px;
  box-shadow: var(--shadow-md);
  position: relative;
}
.article-body::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border: 1px dashed var(--line);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
  opacity: 0.5;
}
.article-body > * {
  position: relative;
  z-index: 1;
}
.article-body p {
  margin-bottom: 1.6em;
  font-size: 1.02rem;
  line-height: 1.9;
}
.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  margin: 2.2em 0 0.8em;
  padding-left: 16px;
  border-left: 4px solid var(--brand);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 1.8em 0 0.7em;
  color: var(--brand-dark);
}
.article-body h4 {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 1.4em 0 0.5em;
  color: var(--ink-soft);
}
.article-body ul,
.article-body ol {
  margin-bottom: 1.6em;
  padding-left: 1.6em;
}
.article-body li {
  margin-bottom: 0.5em;
}
.article-body blockquote {
  margin: 1.8em 0;
  padding: 18px 24px;
  background: var(--bg);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--ink-soft);
  position: relative;
}
.article-body blockquote p {
  margin-bottom: 0;
}
.article-body img {
  margin: 1.8em 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.article-body a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(133,90,50,0.4);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 0.95rem;
}
.article-body th,
.article-body td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  text-align: left;
}
.article-body th {
  background: var(--bg);
  font-weight: 700;
  color: var(--brand-dark);
}
.article-body code {
  font-family: var(--font-mono);
  background: var(--bg-warm);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ====== Article Tags & Nav Card ====== */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 46px 0 30px;
  padding-top: 24px;
  border-top: 2px dashed var(--line);
}
.article-tags-label {
  font-size: 0.9rem;
  color: var(--ink-muted);
  font-weight: 600;
}
.article-navcard {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 30px;
}
.navcard-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
  color: var(--ink);
  transition: all .3s ease;
  box-shadow: var(--shadow-sm);
}
.navcard-item:hover {
  border-color: var(--brand);
  color: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.navcard-item i {
  font-size: 1.1rem;
  color: var(--brand);
}

/* ====== Feature Section ====== */
.section {
  padding: var(--section-space) 0;
}
.section-alt {
  background: var(--bg-warm);
  border-top: 2px dashed var(--line);
  border-bottom: 2px dashed var(--line);
}
.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 10px;
  position: relative;
  padding-left: 22px;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 2px;
  background: var(--brand);
}
.section-head.center .eyebrow {
  padding-left: 0;
}
.section-head.center .eyebrow::before {
  display: none;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}
.section-head p {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--ink-soft);
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-soft);
}
.feature-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  border-radius: 0;
}
.feature-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.feature-card-body .badge {
  margin-bottom: 12px;
}
.feature-card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
  color: var(--ink);
}
.feature-card-body p {
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* ====== CTA Section ====== */
.cta-box {
  position: relative;
  padding: 70px 60px;
  border-radius: var(--radius-lg);
  background-size: cover;
  background-position: center;
  border: 2px solid var(--line-dark);
  text-align: center;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(38,28,18,0.88), rgba(85,60,35,0.76));
}
.cta-box > * {
  position: relative;
  z-index: 1;
  color: #fff;
}
.cta-box h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  max-width: 520px;
  margin: 0 auto 28px;
}
.cta-box .btn {
  margin: 0 auto;
}

/* ====== Empty State ====== */
.empty-section {
  padding: 110px 0 140px;
  min-height: 50vh;
  display: flex;
  align-items: center;
}
.empty-card {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
  padding: 55px 45px;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.empty-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--brand);
  background: var(--bg-warm);
  border-radius: 50%;
  border: 2px dashed var(--line-dark);
}
.empty-card h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--ink);
}
.empty-card p {
  color: var(--ink-soft);
  margin-bottom: 26px;
}

/* ====== Footer ====== */
.site-footer {
  background: #221a12;
  color: rgba(255,255,255,0.7);
  padding: 70px 0 0;
  border-top: 4px solid var(--brand);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 46px;
}
.footer-brand .brand {
  color: #fff;
}
.footer-brand .brand::after {
  background: repeating-linear-gradient(90deg, #fff 0 6px, transparent 6px 10px);
}
.footer-brand p {
  margin-top: 16px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.6);
  max-width: 320px;
}
.footer-links,
.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 10px;
}
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  transition: all .25s ease;
  width: fit-content;
}
.footer-links a:hover {
  color: #fff;
  transform: translateX(3px);
}
.footer-meta p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 22px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom .mono {
  font-family: var(--font-mono);
}

/* ====== Responsive ====== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-body {
    padding: 40px 36px;
  }
}
@media (max-width: 768px) {
  :root {
    --section-space: 64px;
  }
  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border-bottom: 2px solid var(--line);
    padding: 14px 22px;
    gap: 6px;
    transform: translateY(-115%);
    transition: transform .35s ease;
    box-shadow: 0 14px 30px rgba(43,33,21,0.12);
    z-index: 999;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }
  .nav-toggle {
    display: flex;
  }
  .header-cta {
    display: none;
  }
  .article-hero {
    padding: 76px 0 64px;
  }
  .article-body {
    padding: 30px 24px;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    padding: 48px 28px;
  }
  .article-navcard {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .header-inner {
    height: 64px;
  }
  .brand {
    font-size: 1.16rem;
  }
  .article-hero {
    padding: 58px 0 48px;
  }
  .article-hero h1 {
    font-size: 1.6rem;
  }
  .article-meta-line {
    gap: 10px;
    font-size: 0.8rem;
  }
  .article-body {
    padding: 24px 18px;
    font-size: 0.97rem;
  }
  .article-body p {
    font-size: 0.97rem;
  }
  .article-body h2 {
    font-size: 1.25rem;
  }
  .article-body blockquote {
    padding: 14px 16px;
  }
  .cta-box {
    padding: 38px 20px;
  }
  .cta-box h2 {
    font-size: 1.35rem;
  }
  .btn-lg {
    padding: 13px 24px;
    font-size: 0.95rem;
    width: 100%;
  }
  .feature-card img {
    height: 180px;
  }
  .footer-bottom .container {
    justify-content: center;
    text-align: center;
  }
}

/* roulang page: category1 */
:root{
  --bg:#f5efe6;
  --bg-deep:#231f1c;
  --bg-card:#fdf8f0;
  --bg-soft:#ece3d5;
  --primary:#b0563c;
  --primary-hover:#93432d;
  --primary-soft:rgba(176,86,60,0.1);
  --secondary:#43626e;
  --secondary-soft:rgba(67,98,110,0.12);
  --accent:#c79a5b;
  --text:#2b2723;
  --text-light:#6f675e;
  --text-mute:#998f83;
  --border:#d9cdba;
  --border-light:#e8dfd2;
  --border-dark:#b7a892;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(43,39,35,0.06);
  --shadow-md:0 8px 24px rgba(43,39,35,0.09);
  --shadow-lg:0 14px 40px rgba(43,39,35,0.13);
  --transition:all 0.25s ease;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::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);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  min-height:100vh;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-hover)}
button{font-family:inherit;cursor:pointer;background:none;border:none}
input,textarea{font-family:inherit;font-size:1rem}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Header / 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(35,31,28,0.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;
}
.brand{
  font-family:var(--font-serif);
  font-size:1.55rem;font-weight:700;
  color:#f0e6d8;letter-spacing:0.02em;white-space:nowrap;
}
.brand:hover{color:#fff}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;
  font-size:0.92rem;font-weight:500;
  color:rgba(240,230,216,0.82);transition:var(--transition);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,0.08)}
.nav-link.active{
  color:#f0e6d8;background:rgba(255,255,255,0.12);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,0.15);
}
.header-right{display:flex;align-items:center;gap:12px}
.header-cta{
  background:var(--primary);color:#fff;border:1px solid var(--primary);
  border-radius:999px;padding:7px 18px;font-size:0.88rem;font-weight:600;
  transition:var(--transition);
}
.header-cta:hover{
  background:var(--primary-hover);border-color:var(--primary-hover);
  color:#fff;transform:translateY(-1px);
}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;padding:8px;
}
.nav-toggle span{
  display:block;width:22px;height:2px;background:#f0e6d8;
  transition:var(--transition);border-radius:2px;
}
.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)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;
  font-size:0.95rem;font-weight:600;line-height:1.4;
  transition:var(--transition);border:2px solid transparent;
}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{
  background:var(--primary-hover);border-color:var(--primary-hover);
  color:#fff;transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(176,86,60,0.28);
}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{
  background:var(--primary-soft);color:var(--primary-hover);transform:translateY(-2px);
}
.btn-light{background:#f0e6d8;color:var(--bg-deep);border-color:#f0e6d8}
.btn-light:hover{
  background:#fff;border-color:#fff;color:var(--bg-deep);
  transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,0.25);
}
.btn-sm{padding:7px 16px;font-size:0.85rem}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:0.78rem;font-weight:600;
  letter-spacing:0.04em;background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(176,86,60,0.18);
}
.badge-secondary{
  background:var(--secondary-soft);color:var(--secondary);
  border-color:rgba(67,98,110,0.18);
}
.badge-accent{
  background:rgba(199,154,91,0.2);color:#8a6426;
  border-color:rgba(199,154,91,0.3);
}
.mono{font-family:"SF Mono","Consolas",monospace;font-size:0.85em}

/* ===== Hero 区域 ===== */
.hero-zone{
  background:var(--bg-deep);color:#f0e6d8;position:relative;
  overflow:hidden;padding:88px 0 92px;
}
.hero-zone::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:0.16;pointer-events:none;
}
.hero-zone::after{
  content:"";position:absolute;right:-8%;top:-12%;
  width:40%;height:80%;border:1px solid rgba(255,255,255,0.05);
  border-radius:50%;pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr 0.95fr;
  gap:56px;align-items:center;
}
.hero-text{padding:20px 0}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.16);
  font-size:0.82rem;letter-spacing:0.08em;
  color:rgba(240,230,216,0.85);margin-bottom:30px;
}
.hero-title{
  font-family:var(--font-serif);
  font-size:clamp(2rem,4.4vw,3.4rem);
  line-height:1.25;letter-spacing:0.04em;margin-bottom:22px;color:#fff;
}
.hero-title .underline{position:relative;white-space:nowrap;z-index:1}
.hero-title .underline::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;
  height:12px;background:rgba(199,154,91,0.42);z-index:-1;border-radius:2px;
}
.hero-desc{
  font-size:1.05rem;color:rgba(240,230,216,0.76);
  max-width:520px;margin-bottom:36px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{
  border-radius:18px;min-height:360px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position:relative;border:1px solid rgba(255,255,255,0.14);
  box-shadow:0 24px 64px rgba(0,0,0,0.32);
}
.hero-visual::after{
  content:"";position:absolute;inset:12px;
  border:1px dashed rgba(255,255,255,0.22);
  border-radius:14px;pointer-events:none;
}
.hero-visual .visual-stamp{
  position:absolute;top:20px;right:20px;
  width:58px;height:58px;border-radius:50%;
  border:2px solid rgba(255,255,255,0.35);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:0.68rem;color:rgba(255,255,255,0.6);
  transform:rotate(9deg);letter-spacing:0.05em;
  background:rgba(35,31,28,0.4);
}
.hero-visual-badge{
  position:absolute;bottom:24px;left:24px;right:24px;
  background:rgba(35,31,28,0.78);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.18);
  border-radius:12px;padding:14px 18px;font-size:0.88rem;color:#f0e6d8;
  display:flex;align-items:center;gap:10px;
}
.hero-visual-badge i{color:var(--accent);font-size:1.1rem}
.hero-visual-badge .dot{
  width:8px;height:8px;border-radius:50%;background:#7bb06b;
  box-shadow:0 0 8px rgba(123,176,107,0.6);flex-shrink:0;
}

/* ===== Section 通用 ===== */
.section{padding:88px 0}
.section-alt{background:var(--bg-soft)}
.section-dark{background:var(--bg-deep);color:#f0e6d8}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:46px;
}
.section-tag{
  display:inline-block;font-size:0.8rem;font-weight:600;
  letter-spacing:0.16em;text-transform:uppercase;color:var(--primary);
  margin-bottom:10px;padding:4px 0;border-bottom:2px solid var(--accent);
}
.section-title{
  font-family:var(--font-serif);
  font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.3;margin-bottom:8px;
}
.section-sub{color:var(--text-light);font-size:1rem;max-width:600px}
.section-dark .section-tag{color:var(--accent)}
.section-dark .section-sub{color:rgba(240,230,216,0.62)}
.section-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:0.9rem;font-weight:600;padding:8px 18px;border-radius:999px;
  border:1px solid var(--border);transition:var(--transition);color:var(--text);
}
.section-more:hover{background:var(--bg-card);border-color:var(--border-dark);transform:translateX(4px)}
.section-dark .section-more{color:#f0e6d8;border-color:rgba(255,255,255,0.24)}
.section-dark .section-more:hover{background:rgba(255,255,255,0.08)}

/* ===== 分类卡片 ===== */
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.category-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 30px 28px;
  transition:var(--transition);position:relative;overflow:hidden;
}
.category-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:4px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform 0.35s ease;
}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.category-card:hover::before{transform:scaleX(1)}
.category-card::after{
  content:"";
  position:absolute;right:-30px;bottom:-30px;
  width:90px;height:90px;border:1px solid var(--border-light);
  border-radius:50%;pointer-events:none;transition:transform 0.35s ease;
}
.category-card:hover::after{transform:scale(1.5);opacity:0.4}
.category-card .card-icon{
  width:58px;height:58px;border-radius:16px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.35rem;margin-bottom:22px;transition:var(--transition);
}
.category-card:nth-child(2) .card-icon{background:var(--secondary-soft);color:var(--secondary)}
.category-card:nth-child(3) .card-icon{background:rgba(199,154,91,0.2);color:#8a6426}
.category-card h3{
  font-size:1.2rem;margin-bottom:10px;font-family:var(--font-serif);
}
.category-card p{
  font-size:0.92rem;color:var(--text-light);line-height:1.7;margin-bottom:20px;
}
.card-link{font-size:0.88rem;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-link i{transition:transform 0.2s ease}
.card-link:hover i{transform:translateX(4px)}

/* ===== 文章 / 日志卡 ===== */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.article-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;transition:var(--transition);
  display:flex;flex-direction:column;position:relative;
}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.article-cover{position:relative;height:205px;overflow:hidden}
.article-cover img{
  width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease;
}
.article-card:hover .article-cover img{transform:scale(1.04)}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(35,31,28,0.35),transparent 62%);
}
.article-date{
  position:absolute;bottom:14px;left:14px;z-index:2;
  background:rgba(35,31,28,0.72);backdrop-filter:blur(4px);
  color:#f0e6d8;font-size:0.78rem;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,0.18);font-family:var(--font-serif);
}
.article-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.article-body .article-tag{
  font-size:0.78rem;font-weight:600;color:var(--primary);
  letter-spacing:0.06em;margin-bottom:10px;
}
.article-body h3{
  font-size:1.08rem;line-height:1.5;margin-bottom:10px;font-family:var(--font-serif);
}
.article-body p{font-size:0.88rem;color:var(--text-light);flex:1}
.article-body .article-meta{
  display:flex;align-items:center;gap:14px;margin-top:20px;
  padding-top:14px;border-top:1px solid var(--border-light);
  font-size:0.8rem;color:var(--text-mute);
}
.article-meta i{font-size:0.75rem;color:var(--accent)}

/* ===== 流程 ===== */
.process-section{
  background:var(--bg-deep);color:#f0e6d8;
  position:relative;overflow:hidden;
}
.process-section::before{
  content:"";position:absolute;right:-14%;top:-20%;
  width:55%;height:85%;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:0.08;transform:rotate(6deg);pointer-events:none;
}
.process-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:22px;position:relative;
}
.process-step{
  position:relative;padding:30px 24px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--radius);transition:var(--transition);
}
.process-step:hover{
  background:rgba(255,255,255,0.07);transform:translateY(-3px);
}
.step-num{
  font-family:var(--font-serif);font-size:2rem;font-weight:700;
  color:var(--accent);line-height:1;display:block;margin-bottom:16px;
}
.step-arrow{
  position:absolute;right:-20px;top:42%;
  color:rgba(255,255,255,0.2);font-size:1.2rem;z-index:2;
  pointer-events:none;
}
.process-step:last-child .step-arrow{display:none}
.process-step h3{font-size:1.05rem;margin-bottom:8px;color:#fff}
.process-step p{font-size:0.85rem;color:rgba(240,230,216,0.6);line-height:1.7}

/* ===== 统计 ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 24px;text-align:center;
  transition:var(--transition);position:relative;
}
.stat-card::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:36px;height:2px;background:var(--accent);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat-number{
  font-family:var(--font-serif);font-size:2.4rem;font-weight:700;
  color:var(--primary);line-height:1.2;margin-bottom:6px;
}
.stat-label{font-size:0.88rem;color:var(--text-light)}

/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;transition:var(--transition);
}
.faq-item:hover{border-color:var(--border-dark);box-shadow:var(--shadow-sm)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;cursor:pointer;font-weight:600;font-size:1rem;
  color:var(--text);background:none;border:none;text-align:left;
  width:100%;transition:var(--transition);
}
.faq-question:hover{color:var(--primary)}
.faq-question .faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--border);display:flex;align-items:center;
  justify-content:center;font-size:0.8rem;transition:var(--transition);
  color:var(--primary);
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);background:var(--primary);
  border-color:var(--primary);color:#fff;
}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease}
.faq-answer-inner{
  padding:0 26px 22px;color:var(--text-light);
  font-size:0.93rem;line-height:1.85;
  border-top:1px solid var(--border-light);padding-top:18px;
}

/* ===== CTA ===== */
.cta-section{padding:80px 0;background:var(--bg)}
.cta-box{
  background:var(--bg-deep);border-radius:20px;
  padding:60px 48px;position:relative;overflow:hidden;
  text-align:center;color:#f0e6d8;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:0.15;pointer-events:none;
}
.cta-box::after{
  content:"";position:absolute;inset:12px;
  border:1px dashed rgba(255,255,255,0.2);
  border-radius:14px;pointer-events:none;
}
.cta-box h2{
  font-family:var(--font-serif);
  font-size:clamp(1.7rem,3.2vw,2.5rem);
  margin-bottom:14px;color:#fff;position:relative;z-index:1;
}
.cta-box p{
  color:rgba(240,230,216,0.72);max-width:540px;
  margin:0 auto 30px;font-size:1rem;position:relative;z-index:1;
}
.cta-box .btn{position:relative;z-index:2}
.cta-note{
  margin-top:18px;font-size:0.82rem;
  color:rgba(240,230,216,0.48);position:relative;z-index:1;
}
.cta-note i{margin-right:6px;color:var(--accent)}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-deep);color:rgba(240,230,216,0.8);
  padding-top:64px;border-top:1px solid rgba(255,255,255,0.06);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;
  gap:40px;padding-bottom:44px;
}
.footer-brand .brand{font-size:1.4rem}
.footer-brand p{
  font-size:0.88rem;color:rgba(240,230,216,0.55);
  margin-top:14px;line-height:1.8;max-width:320px;
}
.footer-label{
  display:block;font-size:0.78rem;font-weight:600;
  letter-spacing:0.12em;text-transform:uppercase;
  color:rgba(240,230,216,0.4);margin-bottom:14px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(240,230,216,0.7);font-size:0.9rem;transition:var(--transition)}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-meta p{font-size:0.86rem;color:rgba(240,230,216,0.55);margin-bottom:6px}
.footer-meta p i{width:18px;color:var(--accent);font-size:0.8rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0}
.footer-bottom .container{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;
}
.footer-bottom p{font-size:0.82rem;color:rgba(240,230,216,0.45)}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .category-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{min-height:280px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;
    background:var(--bg-deep);flex-direction:column;
    padding:16px 24px;gap:8px;
    transform:translateY(-130%);transition:transform 0.3s ease;
    border-bottom:1px solid rgba(255,255,255,0.08);
    box-shadow:0 20px 40px rgba(0,0,0,0.3);
    align-items:stretch;
  }
  .main-nav.open{transform:translateY(0)}
  .nav-link{
    padding:12px 16px;font-size:1rem;justify-content:center;
  }
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .category-grid,.article-grid{grid-template-columns:1fr;gap:20px}
  .process-grid{grid-template-columns:1fr;gap:16px}
  .step-arrow{display:none}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom .container{flex-direction:column;text-align:center}
  .cta-box{padding:44px 24px}
  .hero-zone{padding:60px 0}
  .section-head{flex-direction:column;align-items:flex-start}
  .article-cover{height:190px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-title{font-size:1.9rem}
  .hero-desc{font-size:0.95rem}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-number{font-size:1.7rem}
  .cta-box{padding:36px 18px}
  .btn{padding:11px 20px;font-size:0.88rem}
  .hero-actions .btn{width:100%;justify-content:center}
  .category-card{padding:26px 22px}
  .article-body{padding:18px 20px 22px}
  .faq-question{padding:16px 20px;font-size:0.94rem}
  .faq-answer-inner{padding:0 20px 18px;padding-top:14px}
}

/* ===== 焦点可见性 ===== */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --primary:#b5651d;
  --primary-dark:#7d3f0e;
  --primary-light:#e8a45c;
  --secondary:#435c40;
  --secondary-dark:#2d402b;
  --accent:#c14e3a;
  --bg:#faf6ee;
  --bg-alt:#f1e9da;
  --bg-dark:#2c241b;
  --card-bg:#fffdf7;
  --text:#38311f;
  --text-dark:#241d12;
  --text-light:#fff9ef;
  --muted:#8a7a66;
  --border:#d9ceb8;
  --border-dark:#b5a58a;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(60,48,30,.08);
  --shadow-md:0 8px 30px rgba(60,48,30,.12);
  --shadow-lg:0 20px 60px rgba(60,48,30,.18);
  --font-serif:'Noto Serif SC','Songti SC','SimSun',serif;
  --font-hand:'ZCOOL XiaoWei','KaiTi','楷体',serif;
  --container:1180px;
  --space:96px;
}

/* ============ Reset & Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-serif);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  background-image:linear-gradient(rgba(181,101,29,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(181,101,29,.03) 1px,transparent 1px);
  background-size:28px 28px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea{font-family:inherit;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--radius-sm);
  font-family:var(--font-hand);font-size:1.05rem;letter-spacing:.06em;
  border:1px solid transparent;transition:all .3s ease;font-weight:500;
}
.btn-sm{padding:8px 18px;font-size:.92rem;}
.btn-primary{background:var(--primary);color:var(--text-light);border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-outline{background:transparent;border-color:var(--border-dark);color:var(--text);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-light{background:var(--text-light);color:var(--text-dark);border-color:var(--text-light);}
.btn-light:hover{background:var(--bg-alt);transform:translateY(-2px);box-shadow:var(--shadow-md);}

.section{padding:var(--space) 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-hand);font-size:.9rem;letter-spacing:.2em;
  color:var(--primary);text-transform:uppercase;margin-bottom:12px;
}
.section-eyebrow::before,.section-eyebrow::after{
  content:"";width:28px;height:1px;background:var(--primary);opacity:.5;
}
.section-title{
  font-family:var(--font-hand);font-size:2.4rem;color:var(--text-dark);
  line-height:1.3;letter-spacing:.04em;
}
.section-sub{color:var(--muted);margin-top:14px;font-size:1.02rem;}

.hand-tag{
  display:inline-block;font-family:var(--font-hand);
  background:var(--card-bg);border:1px solid var(--border-dark);
  padding:4px 16px;border-radius:2px 10px 2px 10px;
  font-size:.85rem;color:var(--primary-dark);
  box-shadow:2px 2px 0 rgba(181,101,29,.12);
  transform:rotate(-2deg);
}
.hand-tag:nth-child(2n){transform:rotate(1.5deg);}

/* ============ Header / 分屏联动导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,246,238,.92);
  backdrop-filter:blur(14px);
  border-bottom:2px solid var(--border);
}
.site-header::after{
  content:"";display:block;height:3px;
  background:repeating-linear-gradient(90deg,var(--primary) 0 8px,transparent 8px 16px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:74px;gap:20px;
}
.brand{
  font-family:var(--font-hand);font-size:1.7rem;color:var(--text-dark);
  letter-spacing:.08em;position:relative;flex-shrink:0;
}
.brand::after{
  content:"✦";color:var(--primary);font-size:.8rem;position:absolute;
  right:-26px;top:8px;
}
.main-nav{
  display:flex;align-items:center;gap:6px;margin-left:auto;
}
.main-nav .nav-link{
  padding:8px 18px;font-family:var(--font-hand);font-size:1rem;
  color:var(--text);border-radius:var(--radius-sm);position:relative;
  transition:all .25s ease;
}
.main-nav .nav-link:hover{color:var(--primary);background:rgba(181,101,29,.06);}
.main-nav .nav-link.active{
  color:var(--primary-dark);background:rgba(181,101,29,.1);
  box-shadow:inset 0 -2px 0 var(--primary);
}
.header-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.header-cta{border-radius:2px 10px 2px 10px;}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;padding:10px;
  border:1px solid var(--border-dark);border-radius:var(--radius-sm);
  background:var(--card-bg);width:46px;height:46px;justify-content:center;align-items:center;
}
.nav-toggle span{
  display:block;width:20px;height:2px;background:var(--text-dark);
  transition:all .3s ease;border-radius:2px;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ Hero（分屏联动） ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(44,36,27,.82),rgba(44,36,27,.65)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:var(--text-light);
  padding:98px 0 110px;
}
.page-hero::before{
  content:"";position:absolute;top:0;right:0;width:38%;height:100%;
  background:repeating-linear-gradient(45deg,rgba(181,101,29,.12) 0 2px,transparent 2px 14px);
  pointer-events:none;
}
.hero-inner{
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
  position:relative;z-index:2;
}
.hero-content .hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(181,101,29,.2);border:1px solid rgba(232,164,92,.4);
  padding:6px 18px;border-radius:2px 12px 2px 12px;
  font-family:var(--font-hand);font-size:.85rem;letter-spacing:.14em;
  color:var(--primary-light);margin-bottom:24px;
}
.hero-content h1{
  font-family:var(--font-hand);font-size:3.2rem;line-height:1.25;
  letter-spacing:.05em;font-weight:500;
}
.hero-content h1 span{color:var(--primary-light);}
.hero-content p{
  margin-top:20px;color:rgba(255,249,239,.82);
  font-size:1.08rem;max-width:520px;line-height:1.8;
}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-seal{
  display:flex;align-items:center;justify-content:center;
  width:220px;height:220px;margin:0 auto;position:relative;
}
.hero-seal::before{
  content:"安全";display:flex;align-items:center;justify-content:center;
  width:170px;height:170px;border-radius:50%;
  border:3px solid var(--primary-light);
  font-family:var(--font-hand);font-size:3.2rem;color:var(--primary-light);
  background:rgba(181,101,29,.15);
  box-shadow:0 0 0 8px rgba(232,164,92,.08),0 0 0 12px rgba(232,164,92,.05);
  transform:rotate(-12deg);
  letter-spacing:.2em;
}
.hero-seal::after{
  content:"hth登录 · 守护访问";position:absolute;bottom:8px;
  font-size:.78rem;color:rgba(255,249,239,.6);
  font-family:var(--font-hand);letter-spacing:.1em;
  background:rgba(44,36,27,.6);padding:4px 14px;border-radius:20px;
  white-space:nowrap;
}

/* ============ 核心理念（三支柱） ============ */
.pillars-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.pillar-card{
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:2px 18px 2px 18px;padding:36px 28px 30px;
  position:relative;transition:all .35s ease;
  box-shadow:var(--shadow-sm);
}
.pillar-card::before{
  content:"";position:absolute;top:-6px;left:-6px;right:-6px;bottom:-6px;
  border:1px dashed var(--border-dark);border-radius:4px 22px 4px 22px;
  opacity:.5;pointer-events:none;transition:opacity .3s;
}
.pillar-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);}
.pillar-card:hover::before{opacity:1;}
.pillar-icon{
  width:64px;height:64px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  color:var(--text-light);font-size:1.6rem;margin-bottom:22px;
  box-shadow:0 4px 14px rgba(181,101,29,.3);
}
.pillar-card h3{
  font-family:var(--font-hand);font-size:1.4rem;color:var(--text-dark);margin-bottom:12px;
}
.pillar-card p{color:var(--muted);font-size:.95rem;line-height:1.75;}

/* ============ 安全防线（卡片网格） ============ */
.defense-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.defense-card{
  background:var(--card-bg);border-radius:var(--radius);
  overflow:hidden;border:1px solid var(--border);
  transition:all .35s ease;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);
}
.defense-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.defense-card .defense-media{
  height:168px;overflow:hidden;position:relative;
}
.defense-card .defense-media img{
  width:100%;height:100%;object-fit:cover;transition:transform .5s ease;
}
.defense-card:hover .defense-media img{transform:scale(1.06);}
.defense-card .defense-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(44,36,27,.45),transparent 55%);
}
.defense-card .defense-num{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(250,246,238,.9);color:var(--primary-dark);
  font-family:var(--font-hand);font-size:.9rem;
  padding:4px 14px;border-radius:2px 10px 2px 10px;
  box-shadow:var(--shadow-sm);
}
.defense-body{padding:24px 22px 26px;flex:1;display:flex;flex-direction:column;}
.defense-body h3{
  font-family:var(--font-hand);font-size:1.25rem;color:var(--text-dark);
  margin-bottom:10px;
}
.defense-body p{color:var(--muted);font-size:.9rem;flex:1;line-height:1.7;}
.defense-body .mini-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:6px;}
.mini-tags span{
  font-size:.75rem;padding:3px 10px;background:var(--bg-alt);
  border:1px solid var(--border);border-radius:20px;color:var(--muted);
  font-family:var(--font-hand);
}

/* ============ 安全流程 ============ */
.process-wrap{
  background:var(--bg-dark);border-radius:4px 24px 4px 24px;
  padding:56px 48px;position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.process-wrap::before{
  content:"";position:absolute;inset:0;background:rgba(44,36,27,.88);
}
.process-wrap .section-title{color:var(--text-light);}
.process-wrap .section-sub{color:rgba(255,249,239,.7);}
.process-steps{
  position:relative;z-index:2;display:grid;grid-template-columns:repeat(5,1fr);
  gap:0;
}
.step-item{text-align:center;position:relative;padding:0 12px;}
.step-item::after{
  content:"→";position:absolute;right:-14px;top:40px;
  color:var(--primary-light);font-size:1.4rem;
}
.step-item:last-child::after{display:none;}
.step-circle{
  width:72px;height:72px;margin:0 auto 16px;border-radius:50%;
  border:2px solid var(--primary-light);background:rgba(181,101,29,.15);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-hand);font-size:1.3rem;color:var(--primary-light);
  position:relative;
}
.step-circle::before{
  content:"";position:absolute;inset:-7px;
  border:1px dashed rgba(232,164,92,.35);border-radius:50%;
  animation:spin 24s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.step-item h4{
  font-family:var(--font-hand);font-size:1.05rem;color:var(--text-light);
  margin-bottom:6px;
}
.step-item p{font-size:.8rem;color:rgba(255,249,239,.65);line-height:1.6;}

/* ============ 日志列表 ============ */
.log-list{display:flex;flex-direction:column;gap:22px;max-width:900px;margin:0 auto;}
.log-card{
  display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:center;
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:2px 16px 2px 16px;padding:20px 24px;
  transition:all .3s ease;position:relative;
  box-shadow:var(--shadow-sm);
}
.log-card::before{
  content:"";position:absolute;left:22px;right:22px;bottom:-1px;height:1px;
  background:repeating-linear-gradient(90deg,var(--border-dark) 0 4px,transparent 4px 8px);
}
.log-card:last-child::before{display:none;}
.log-card:hover{transform:translateX(8px);box-shadow:var(--shadow-md);border-color:var(--border-dark);}
.log-media{height:110px;overflow:hidden;border-radius:var(--radius-sm);}
.log-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.log-card:hover .log-media img{transform:scale(1.05);}
.log-body h3{
  font-family:var(--font-hand);font-size:1.25rem;color:var(--text-dark);margin-bottom:8px;
}
.log-body p{color:var(--muted);font-size:.9rem;line-height:1.6;}
.log-date{
  font-family:var(--font-hand);color:var(--primary);
  font-size:.85rem;white-space:nowrap;
  border:1px solid var(--border);padding:6px 16px;border-radius:20px;
  background:var(--bg);
}

/* ============ 数据指标 ============ */
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{
  text-align:center;padding:36px 20px;
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius);transition:all .3s;
  box-shadow:var(--shadow-sm);
}
.stat-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.stat-num{
  font-family:var(--font-hand);font-size:2.8rem;color:var(--primary);
  line-height:1.2;font-weight:500;
}
.stat-label{color:var(--muted);font-size:.9rem;margin-top:8px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;
  transition:all .3s;
}
.faq-item:hover{border-color:var(--border-dark);}
.faq-q{
  padding:22px 28px;display:flex;justify-content:space-between;align-items:center;
  cursor:pointer;font-family:var(--font-hand);font-size:1.1rem;
  color:var(--text-dark);gap:16px;user-select:none;
}
.faq-q .faq-icon{
  flex-shrink:0;width:32px;height:32px;border-radius:50%;
  border:1px solid var(--border-dark);display:flex;align-items:center;justify-content:center;
  color:var(--primary);transition:all .3s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:var(--text-light);border-color:var(--primary);}
.faq-a{
  padding:0 28px;max-height:0;overflow:hidden;transition:max-height .35s ease;
  color:var(--muted);font-size:.95rem;line-height:1.75;
}
.faq-item.open .faq-a{max-height:400px;padding-bottom:22px;}

/* ============ CTA ============ */
.cta-section{
  background:linear-gradient(135deg,rgba(181,101,29,.15),rgba(67,92,64,.12)),
    url('/assets/images/backpic/back-3.png') center/cover;
  padding:88px 0;text-align:center;position:relative;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:var(--primary-dark);opacity:.82;
}
.cta-inner{position:relative;z-index:2;max-width:680px;margin:0 auto;}
.cta-inner h2{
  font-family:var(--font-hand);font-size:2.4rem;color:var(--text-light);line-height:1.4;
}
.cta-inner p{color:rgba(255,249,239,.8);margin:18px 0 32px;font-size:1.02rem;}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ============ Footer ============ */
.site-footer{
  background:var(--bg-dark);color:rgba(255,249,239,.75);
  padding:64px 0 0;position:relative;
}
.site-footer::before{
  content:"";display:block;height:4px;
  background:repeating-linear-gradient(90deg,var(--primary) 0 10px,transparent 10px 22px);
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;
  padding-bottom:44px;
}
.footer-brand .brand{color:var(--text-light);font-size:1.6rem;}
.footer-brand .brand::after{color:var(--primary-light);}
.footer-brand p{margin-top:14px;font-size:.88rem;line-height:1.7;color:rgba(255,249,239,.6);max-width:320px;}
.footer-label{
  display:block;font-family:var(--font-hand);font-size:.85rem;
  letter-spacing:.15em;color:var(--primary-light);margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:.9rem;color:rgba(255,249,239,.7);}
.footer-links a:hover{color:var(--primary-light);padding-left:6px;}
.footer-meta p{font-size:.85rem;color:rgba(255,249,239,.55);margin-bottom:6px;}
.footer-bottom{
  border-top:1px solid rgba(255,249,239,.1);
  padding:20px 0;text-align:center;
}
.footer-bottom .container{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;
}
.footer-bottom p{font-size:.8rem;color:rgba(255,249,239,.5);}
.footer-bottom p:last-child{
  font-family:var(--font-hand);color:rgba(232,164,92,.6);letter-spacing:.1em;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--space:72px;}
  .defense-grid{grid-template-columns:repeat(2,1fr);}
  .process-steps{grid-template-columns:repeat(3,1fr);gap:32px 12px;}
  .step-item:nth-child(3)::after{display:none;}
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:32px;}
  .hero-content p{margin-left:auto;margin-right:auto;}
  .hero-actions{justify-content:center;}
  .hero-seal{display:none;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .log-card{grid-template-columns:160px 1fr;}
  .log-date{display:inline-block;width:max-content;margin-top:8px;grid-column:2/3;}
}

@media (max-width:768px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;top:76px;left:0;right:0;
    background:var(--bg);flex-direction:column;align-items:stretch;
    padding:16px 24px 24px;gap:12px;
    border-bottom:2px solid var(--border);
    transform:translateY(-120%);opacity:0;pointer-events:none;
    transition:all .35s ease;
    box-shadow:var(--shadow-lg);
    z-index:99;
  }
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .main-nav .nav-link{padding:14px 18px;font-size:1.05rem;}
  .header-cta{display:none;}
  .section-title{font-size:2rem;}
  .page-hero h1{font-size:2.4rem;}
  .pillars-row{grid-template-columns:1fr;}
  .defense-grid{grid-template-columns:1fr;}
  .process-wrap{padding:44px 22px;}
  .process-steps{grid-template-columns:1fr;gap:36px;}
  .step-item::after{content:"↓";right:auto;top:auto;bottom:-28px;}
  .step-item:last-child::after{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .log-list{grid-template-columns:1fr;}
  .log-card{grid-template-columns:1fr;}
  .log-media{height:180px;}
  .log-date{grid-column:auto;}
  .footer-bottom .container{flex-direction:column;text-align:center;}
}

@media (max-width:520px){
  :root{--space:56px;}
  .container{padding:0 16px;}
  .page-hero h1{font-size:1.9rem;}
  .section-title{font-size:1.7rem;}
  .hero-actions .btn{width:100%;}
  .stats-grid{grid-template-columns:1fr;}
  .defense-grid{grid-template-columns:1fr;}
  .defense-card .defense-media{height:200px;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:1rem;padding:18px 18px;}
  .faq-a{padding:0 18px;}
  .faq-item.open .faq-a{padding-bottom:18px;}
}

/* 焦点可访问性 */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;
}