/* roulang page: index */
:root {
  --bg-warm: #F2F1ED;
  --bg-white: #FFFFFF;
  --bg-deep: #17231F;
  --bg-side: #1E2D27;
  --ink-title: #1B201E;
  --ink-body: #333A36;
  --ink-sub: #707873;
  --line: #E3DFD7;
  --line-deep: rgba(255,255,255,0.60);
  --brand: #1F6E5C;
  --brand-hover: #185647;
  --brand-soft: rgba(31,110,92,0.08);
  --copper: #B8894B;
  --danger: #B44E4E;
  --radius-btn: 6px;
  --radius-card: 8px;
  --radius-tag: 4px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-hover: 0 18px 40px rgba(0,0,0,0.08);
  --font-display: "Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body: "Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --space-section: clamp(4.5rem, 9vw, 8rem);
  --container: 1200px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-body);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
}

h1, h2, h3, h4, h5 {
  color: var(--ink-title);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.4vw, 4.4rem);
  line-height: 1.16;
  font-weight: 700;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  line-height: 1.25;
  margin-bottom: 1.2rem;
}

h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p { color: var(--ink-body); }
.section-sub { color: var(--ink-sub); font-size: 1rem; max-width: 620px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-btn);
  padding: 14px 30px;
  border: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.18s ease, box-shadow 0.25s ease;
  white-space: nowrap;
  position: relative;
}

.btn:active { transform: scale(0.98); }

.btn:focus-visible,
.text-link:focus-visible,
.nav-link:focus-visible,
.accordion-btn:focus-visible,
.panel-tab:focus-visible,
.article-item a:focus-visible,
.case-row:focus-visible,
.footer a:focus-visible,
.drawer-close:focus-visible,
.back-top:focus-visible,
.login-field:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--brand);
  color: var(--brand);
}

.btn-outline:hover {
  background: var(--brand-soft);
  border-color: var(--brand-hover);
}

.btn-arrow svg {
  transition: transform 0.25s ease;
}

.btn-arrow:hover svg {
  transform: translateX(4px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-body);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease, gap 0.2s ease;
}

.text-link:hover { color: var(--brand); gap: 10px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 80px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background 0.35s ease, box-shadow 0.35s ease, height 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(242,241,237,0.88);
  backdrop-filter: saturate(1.2) blur(12px);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
  border-bottom-color: var(--line);
  height: 68px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  transition: opacity 0.12s ease;
  flex-shrink: 0;
}

.logo:hover { opacity: 0.75; }

.logo-mark {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: -0.02em;
}

.logo-text {
  font-size: 0.85rem;
  color: var(--ink-title);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-body);
  padding: 6px 2px;
  position: relative;
  transition: color 0.22s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-link:hover { color: var(--brand); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link.active {
  color: var(--ink-title);
  font-weight: 600;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 26px;
  padding: 0 12px;
  border-radius: 100px;
  background: rgba(255,255,255,0.62);
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink-sub);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4CA97C;
  box-shadow: 0 0 0 0 rgba(76,169,124,0.4);
  animation: pulse-dot 2.2s infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(76,169,124,0.35); }
  70% { box-shadow: 0 0 0 5px rgba(76,169,124,0); }
  100% { box-shadow: 0 0 0 0 rgba(76,169,124,0); }
}

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
  transition: background 0.2s ease;
}

.burger:hover { background: #fff; }
.burger:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.burger svg { stroke: var(--ink-title); }

/* Drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(23,35,31,0.42);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.open { opacity: 1; pointer-events: auto; }

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(380px, 92vw);
  background: var(--bg-warm);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: -12px 0 40px rgba(0,0,0,0.08);
  overflow-y: auto;
}

.drawer.open { transform: translateX(0); }

.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.drawer-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: background 0.2s ease;
}

.drawer-close:hover { background: #fff; }

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.drawer-link {
  font-size: 1.4rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink-title);
  padding: 14px 6px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.drawer-link:hover { color: var(--brand); padding-left: 12px; }
.drawer-link.active { color: var(--brand); }

.drawer-footer {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drawer-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--ink-sub);
  padding: 12px;
  background: rgba(255,255,255,0.6);
  border-radius: 6px;
  border: 1px solid var(--line);
}

/* Main */
main { padding-top: 80px; overflow: hidden; }

section { position: relative; }

.section { padding: var(--space-section) 0; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  flex-wrap: wrap;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--copper);
}

/* Hero */
.hero {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  padding: 80px 0 70px;
  background: var(--bg-warm);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.24;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(242,241,237,0.96) 20%, rgba(242,241,237,0.68) 60%, rgba(242,241,237,0.86) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 58% 1fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}

.hero-copy { max-width: 660px; position: relative; }

.watermark-tag {
  position: absolute;
  top: -18px;
  right: 8%;
  font-family: var(--font-display);
  writing-mode: vertical-rl;
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  color: var(--ink-title);
  opacity: 0.07;
  font-weight: 600;
  pointer-events: none;
  line-height: 2;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.82rem;
  color: var(--ink-sub);
  margin-bottom: 28px;
}

.hero-status .status-dot { width: 5px; height: 5px; }

.hero h1 { margin-bottom: 20px; }

.hero h1 .brand-line { color: var(--brand); }

.hero-lead {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--ink-sub);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-btns {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--ink-sub);
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Login panel */
.login-panel {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: 0 20px 50px rgba(0,0,0,0.06);
  padding: 34px 32px 28px;
  max-width: 420px;
  width: 100%;
  justify-self: end;
}

.login-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.login-panel-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink-title);
}

.login-panel-badge {
  font-size: 0.75rem;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 500;
}

.login-field-group { margin-bottom: 16px; }

.login-field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-body);
  margin-bottom: 6px;
}

.login-field {
  width: 100%;
  height: 46px;
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  background: #FAFAF8;
  font-size: 0.95rem;
  color: var(--ink-title);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.2s ease;
  outline: none;
}

.login-field:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(31,110,92,0.10);
  background: #fff;
}

.login-field::placeholder { color: #9CA39E; }

.login-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 14px 0 20px;
  font-size: 0.82rem;
  color: var(--ink-sub);
}

.login-option a { color: var(--brand); }

.login-option a:hover { text-decoration: underline; }

.onboarding-check {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-sub);
  font-size: 0.85rem;
}

.onboarding-check input[type="checkbox"] {
  accent-color: var(--brand);
  width: 15px;
  height: 15px;
  border-radius: 4px;
}

.login-help {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: var(--ink-sub);
  font-size: 0.85rem;
}

.login-help a { color: var(--brand); }
.login-help a:hover { text-decoration: underline; }

/* Section count */
.section-count {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--copper);
  letter-spacing: 0.2em;
}

/* Feature tab area */
.feature-wrap {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.feature-anchors {
  position: sticky;
  top: 120px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.panel-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 14px 17px 2px;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink-sub);
  text-align: left;
  position: relative;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.panel-tab::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 3px;
  height: 24px;
  border-radius: 2px;
  background: var(--brand);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.panel-tab .tab-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--copper);
  font-weight: 400;
  margin-right: 5px;
}

.panel-tab .arrow-icon { opacity: 0; transform: translateX(-4px); transition: all 0.3s ease; }

.panel-tab:hover { color: var(--brand); padding-left: 5px; }

.panel-tab.active {
  color: var(--ink-title);
  font-weight: 700;
}

.panel-tab.active::before { transform: translateY(-50%) scaleY(1); }

.panel-tab.active .arrow-icon { opacity: 1; transform: translateX(0); }

.feature-panels {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-white);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.feature-pane { display: none; }

.feature-pane.active { display: block; animation: pane-in 0.45s ease both; }

@keyframes pane-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.feature-pane-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  min-height: 360px;
}

.feature-pane-content {
  padding: 40px 38px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.feature-pane-content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  margin-bottom: 14px;
}

.feature-pane-content p {
  color: var(--ink-sub);
  font-size: 0.94rem;
  line-height: 1.8;
  margin-bottom: 22px;
  max-width: 420px;
}

.feature-pane-media {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  background: var(--bg-warm);
}

.feature-pane-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-pane-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(23,35,31,0.15), transparent 50%);
  z-index: 1;
}

.feature-pane:hover .feature-pane-media img { transform: scale(1.03); }

/* Auth-scenario */
.scenario-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  margin-bottom: 96px;
}

.scenario-row:last-child { margin-bottom: 0; }

.scenario-media {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--bg-white);
}

.scenario-media img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.scenario-media:hover img { transform: scale(1.02); }

.scenario-media::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 25%;
  background: linear-gradient(to top, rgba(23,35,31,0.20), transparent);
  border-radius: 0 0 10px 10px;
}

.scenario-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--copper);
  margin-bottom: 14px;
  text-transform: uppercase;
}

.scenario-row.flip .scenario-media { order: 2; }
.scenario-row.flip .scenario-copy { order: 1; }

.scenario-copy h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin-bottom: 16px;
}

.scenario-copy p {
  color: var(--ink-sub);
  margin-bottom: 22px;
  max-width: 470px;
}

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 26px;
}

.scenario-list-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.92rem;
  color: var(--ink-body);
}

.scenario-list-item::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--copper);
  flex-shrink: 0;
}

/* FAQ */
.faq-list {
  border-top: 1px solid var(--line);
}

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

.faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 0;
  width: 2px;
  background: var(--brand);
  z-index: 1;
}

.faq-item.active::before { height: 100%; transition: height 0.35s ease; }

.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 30px 28px 20px;
  text-align: left;
  transition: background 0.25s ease;
  cursor: pointer;
}

.accordion-btn:hover { background: rgba(255,255,255,0.5); }

.accordion-question {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink-title);
}

.faq-no {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--copper);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.faq-icons {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, border-color 0.2s ease, background 0.2s ease;
}

.faq-icons svg { transition: transform 0.4s ease, stroke 0.2s ease; }

.faq-item.active .faq-icons {
  border-color: var(--brand);
  background: var(--brand-soft);
}

.faq-item.active .faq-icons svg {
  transform: rotate(45deg);
  stroke: var(--brand);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1), padding 0.3s ease;
  padding: 0 30px 0 76px;
}

.faq-item.active .accordion-panel {
  max-height: 300px;
  padding-bottom: 30px;
}

.accordion-panel p {
  color: var(--ink-sub);
  font-size: 0.93rem;
  border-left: 2px solid var(--brand);
  padding-left: 20px;
}

/* Case showcase */
.case-list {
  border-top: 1px solid var(--line);
}

.case-row {
  display: grid;
  grid-template-columns: 120px 1fr 200px;
  gap: 24px;
  align-items: center;
  padding: 32px 10px;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background 0.25s ease, padding-left 0.3s ease;
  cursor: pointer;
  background: transparent;
  width: 100%;
  text-align: left;
}

.case-row:hover {
  background: #fff;
  padding-left: 22px;
}

.case-row:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: -2px;
  border-radius: 6px;
}

.case-index {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 700;
  color: var(--line);
  line-height: 1;
  transition: color 0.25s ease;
}

.case-row:hover .case-index { color: var(--copper); }

.case-body h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 5px;
}

.case-body p {
  font-size: 0.9rem;
  color: var(--ink-sub);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 520px;
}

.case-thumb {
  width: 200px;
  height: 110px;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  justify-self: end;
}

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

.case-row:hover .case-thumb img { transform: scale(1.04); }

.case-arrow {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.25s ease, right 0.25s ease;
  color: var(--brand);
}

.case-row:hover .case-arrow { opacity: 1; right: 10px; }

/* Price */
.price-block {
  background: var(--bg-deep);
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  color: #fff;
}

.price-intro {
  padding: clamp(36px, 5vw, 60px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--bg-side);
}

.price-intro .eyebrow { color: #d7b98d; }
.price-intro .eyebrow::before { background: var(--copper); }

.price-intro h2 { color: #fff; margin: 0; }

.price-intro p { color: rgba(255,255,255,0.72); font-size: 0.92rem; }

.price-intro .btn-outline {
  align-self: flex-start;
  border-color: rgba(255,255,255,0.5);
  color: #fff;
  margin-top: 14px;
}

.price-intro .btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: #fff;
}

.price-list {
  padding: 20px 0;
}

.price-item {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 22px 40px;
  position: relative;
  transition: background 0.25s ease;
}

.price-item:hover { background: rgba(255,255,255,0.04); }

.price-item.has-feature { background: rgba(255,255,255,0.03); }

.price-item.has-feature::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--copper);
}

.price-item-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.copper-badge {
  background: rgba(184,137,75,0.2);
  color: #e2c599;
  font-size: 0.7rem;
  padding: 3px 9px;
  border-radius: 4px;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1px solid rgba(184,137,75,0.35);
}

.price-item-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.62);
  line-height: 1.6;
}

.price-item-action .btn-text {
  color: #fff;
  border-color: rgba(255,255,255,0.35);
  font-size: 0.84rem;
  padding: 8px 18px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.35);
  background: transparent;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.22s ease;
}

.price-item-action .btn-text:hover {
  border-color: #fff;
  background: #fff;
  color: var(--bg-deep);
}

/* Latest news */
.news-list {
  border-top: 1px solid var(--line);
}

.news-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.news-item:hover { background: rgba(255,255,255,0.5); }

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 70px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: var(--font-display);
  line-height: 1;
}

.news-day {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--brand);
}

.news-month {
  font-size: 0.75rem;
  color: var(--ink-sub);
  margin-top: 5px;
  letter-spacing: 0.1em;
}

.news-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.news-tag-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.news-cat {
  font-size: 0.75rem;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 2px 10px;
  border-radius: 4px;
  font-weight: 500;
}

.news-time {
  font-size: 0.75rem;
  color: var(--ink-sub);
}

.news-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink-title);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.2s ease;
  display: inline-block;
}

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

.news-summary {
  font-size: 0.88rem;
  color: var(--ink-sub);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 560px;
}

.news-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-sub);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.news-empty {
  border: 1px dashed var(--line);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: var(--ink-sub);
  background: rgba(255,255,255,0.5);
  font-size: 0.93rem;
}

/* CTA strip */
.cta-strip {
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
  padding: clamp(60px, 8vw, 90px) 0;
  border-radius: 16px;
  margin-bottom: var(--space-section);
}

.cta-strip::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 45%;
  background-image: url('/assets/images/backpic/back-3.png');
  background-position: center;
  background-size: cover;
  opacity: 0.14;
}

.cta-strip::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(23,35,31,0.98) 30%, rgba(23,35,31,0.6) 100%);
}

.cta-strip-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-strip h2 {
  color: #fff;
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-family: var(--font-display);
}

.cta-strip p {
  color: rgba(255,255,255,0.66);
  font-size: 0.95rem;
  max-width: 520px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--copper);
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 15px 36px;
  border-radius: 6px;
  transition: background 0.25s ease, transform 0.2s ease;
}

.cta-btn:hover { background: #c79d5e; transform: translateY(-2px); }

/* Footer */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.68);
  padding-top: 70px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--copper) 0%, rgba(184,137,75,0.2) 40%, transparent 100%);
  opacity: 0.3;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
}

.footer-brand .logo-mark { color: #fff; font-size: 1.6rem; }
.footer-brand .logo-text { color: rgba(255,255,255,0.9); }

.footer-brand p {
  font-size: 0.87rem;
  color: rgba(255,255,255,0.58);
  margin-top: 18px;
  max-width: 320px;
  line-height: 1.8;
}

.footer-col-title {
  font-size: 0.92rem;
  color: #fff;
  font-weight: 600;
  margin-bottom: 22px;
}

.footer-col-title::after {
  content: "";
  display: block;
  width: 26px;
  height: 1px;
  background: var(--copper);
  margin-top: 8px;
  opacity: 0.65;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color 0.22s ease, padding-left 0.2s ease;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact { font-size: 0.9rem; line-height: 2; color: rgba(255,255,255,0.6); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* Back to top */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 34px;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--bg-deep);
  border: 1px solid rgba(255,255,255,0.3);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.25s ease;
  color: #fff;
}

.back-top.show { opacity: 1; visibility: visible; }

.back-top:hover { background: var(--brand-hover); color: #fff; transform: translateY(-4px); }

/* Reveal anim */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* Desktop large */
@media (min-width: 1440px) {
  .container { max-width: 1280px; }
  .hero-copy { max-width: 700px; }
}

/* Tablet 768-1023 */
@media (max-width: 1023px) {
  .container { padding-left: 32px; padding-right: 32px; }

  .site-header { height: 70px; }

  .main-nav, .header-actions .btn-primary, .nav-status { display: none; }

  .burger { display: flex; }

  .hero { min-height: auto; padding-top: 70px; }

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

  .hero-copy { max-width: 100%; }

  .login-panel { justify-self: start; max-width: 100%; }

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

  .feature-anchors {
    position: static;
    flex-direction: row;
    border-top: none;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    gap: 24px;
  }

  .panel-tab {
    border-bottom: 2px solid transparent;
    padding: 10px 6px;
    margin: 0;
    white-space: nowrap;
    border-left: none !important;
    border-right: none;
  }

  .panel-tab::before { display: none; }

  .panel-tab.active { border-bottom-color: var(--brand); }

  .panel-tab .arrow-icon { display: none; }

  .scenario-row { grid-template-columns: 1fr; gap: 28px; }
  .scenario-row.flip .scenario-media { order: 0; }
  .scenario-row.flip .scenario-copy { order: 1; }
  .scenario-row { margin-bottom: 72px; }

  .price-block { grid-template-columns: 1fr; }

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

  .case-row {
    grid-template-columns: 100px 1fr;
  }

  .case-thumb {
    width: 130px;
    height: 80px;
    justify-self: start;
    margin-top: 14px;
  }

  .case-body p { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; text-overflow: ellipsis; }

  .news-item { grid-template-columns: 80px 1fr; }

  .news-link { display: none; }

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

/* Mobile <=767 */
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }

  .site-header { height: 64px; }

  main { padding-top: 64px; }

  .section { padding: clamp(3.5rem, 10vw, 5rem) 0; }

  h1 { font-size: clamp(2.2rem, 8vw, 2.6rem); }

  .logo-text { font-size: 0.75rem; letter-spacing: 0.04em; }

  .header-actions { gap: 10px; }

  .burger { width: 40px; height: 40px; }

  .hero { padding: 52px 0 56px; }

  .hero-btns .btn { flex: 1; }

  .hero-status { margin-bottom: 20px; }

  .login-panel { padding: 24px 20px 22px; }

  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; }

  .feature-pane-content { padding: 28px 20px; }

  .feature-pane-media { min-height: 200px; position: relative; }

  .feature-pane-media img { position: absolute; inset: 0; width: 100%; height: 100%; }

  .panel-tab { font-size: 0.95rem; }

  .scenario-media img { aspect-ratio: 16/12; }

  .case-row {
    grid-template-columns: 1fr;
    padding: 22px 4px;
  }

  .case-row:hover { padding-left: 12px; }

  .case-index { font-size: 2.2rem; }

  .case-thumb {
    width: 100%;
    height: 160px;
    justify-self: start;
    margin-top: 8px;
  }

  .accordion-btn { padding: 20px 6px 20px 14px; }
  .accordion-question { font-size: 0.97rem; gap: 10px; }
  .faq-no { display: none; }
  .fq-icons { position: absolute; right: 4px; top: 20px; width: 30px; height: 30px; }
  .faq-item .faq-icons { margin-left: auto; }
  .accordion-panel { padding: 0 12px 0 18px; }
  .faq-item.active .accordion-panel { padding-bottom: 20px; }

  .price-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 18px 20px;
  }

  .price-item-action { margin-top: 6px; }

  .price-intro { padding: 36px 24px; }

  .price-list { padding: 4px 0; }

  .news-item { grid-template-columns: 1fr; gap: 12px; }

  .news-date {
    flex-direction: row;
    width: auto;
    height: auto;
    padding: 8px 14px;
    justify-content: flex-start;
    gap: 10px;
  }

  .news-day {
    font-size: 1.2rem;
  }

  .news-month { margin: 0; }

  .news-summary { white-space: normal; -webkit-line-clamp: 2; display: -webkit-box; -webkit-box-orient: vertical; }

  .cta-strip { padding: 48px 24px; border-radius: 12px; }
  .cta-strip .cta-btn { width: 100%; justify-content: center; }

  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 36px; }

  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .back-top { right: 14px; bottom: 20px; }
}

@media (max-width: 375px) {
  .btn { padding: 13px 20px; font-size: 0.9rem; }
  .brand-text { font-size: 0.75rem; }
}

/* roulang page: article */
:root {
  --page-bg: #F2F1ED;
  --surface: #FFFFFF;
  --deep: #17231F;
  --deep-soft: #1F2C27;
  --ink: #1B201E;
  --text: #333A36;
  --muted: #707873;
  --line: #E3DFD7;
  --brand: #1F6E5C;
  --brand-hover: #185647;
  --brand-muted: rgba(31, 110, 92, 0.08);
  --gold: #B8894B;
  --gold-soft: rgba(184, 137, 75, 0.13);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-sm: 4px;
  --radius-btn: 6px;
  --radius-card: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.08);
  --container: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
  background: var(--page-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button,
input,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(242, 241, 237, 0.62);
  border-bottom: 1px solid rgba(227, 223, 215, 0.72);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 78px;
  transition: height 0.24s var(--ease);
}

.site-header.scrolled {
  background: rgba(242, 241, 237, 0.88);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
  backdrop-filter: saturate(1.2) blur(12px);
  box-shadow: 0 8px 30px rgba(23, 35, 31, 0.06);
}

.site-header.scrolled .header-inner {
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  transition: opacity 0.12s linear;
}

.logo:hover,
.logo:focus-visible {
  opacity: 0.82;
}

.logo:active {
  opacity: 0.7;
}

.logo-mark {
  font-family: var(--sans);
  font-size: 1.92rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
  color: var(--brand);
}

.logo-text {
  font-family: var(--sans);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 52px;
  font-size: 0.96rem;
  font-weight: 500;
  color: #454D48;
  white-space: nowrap;
  transition: color 0.18s var(--ease), opacity 0.18s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease);
}

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

.nav-link:hover::after {
  transform: scaleX(0.6);
}

.nav-link.active {
  color: var(--brand);
  font-weight: 600;
}

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

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  flex-shrink: 0;
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 12px;
  border: 1px solid rgba(31, 110, 92, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.status-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4a9e7b;
  box-shadow: 0 0 0 0 rgba(74, 158, 123, 0.4);
  animation: statusPulse 2.2s infinite;
}

@keyframes statusPulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 158, 123, 0.35); }
  70% { box-shadow: 0 0 0 5px rgba(74, 158, 123, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 158, 123, 0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 24px;
  height: 44px;
  border-radius: var(--radius-btn);
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease), transform 0.12s var(--ease), opacity 0.2s var(--ease);
}

.btn:active {
  transform: scale(0.98);
}

.btn svg {
  width: 16px;
  height: 16px;
  stroke-width: 2;
  transition: transform 0.2s var(--ease);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-hover);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(31, 110, 92, 0.46);
  color: var(--brand);
}

.btn-outline:hover {
  background: var(--brand-muted);
  border-color: var(--brand);
}

.header-actions .btn {
  height: 40px;
  padding: 0 20px;
}

.burger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-left: 4px;
  border: 1px solid rgba(23, 35, 31, 0.14);
  border-radius: var(--radius-btn);
  background: rgba(255, 255, 255, 0.35);
  color: var(--ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.burger:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--brand);
  color: var(--brand);
}

.drawer {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: block;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.28s var(--ease), visibility 0.28s var(--ease);
}

.drawer.is-open {
  pointer-events: auto;
  visibility: visible;
  opacity: 1;
}

.drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 35, 31, 0.42);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 86vw);
  background: var(--page-bg);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 24px 26px 28px;
  transform: translateX(24px);
  transition: transform 0.3s var(--ease);
  overflow-y: auto;
}

.drawer.is-open .drawer-panel {
  transform: translateX(0);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.drawer-close {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(23, 35, 31, 0.14);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.4);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.drawer-close:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: #fff;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  padding: 24px 0 32px;
}

.drawer-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 4px;
  border-bottom: 1px solid rgba(227, 223, 215, 0.8);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  transition: color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.drawer-nav a:hover {
  color: var(--brand);
  padding-left: 8px;
}

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

.drawer-nav a i {
  font-style: normal;
  color: var(--gold);
}

.drawer-action {
  margin-top: auto;
  padding-top: 22px;
}

.drawer-action .btn {
  width: 100%;
  height: 48px;
}

body.drawer-open {
  overflow: hidden;
}

.site-footer {
  background: var(--deep);
  color: rgba(255, 255, 255, 0.76);
  padding-top: 64px;
  padding-bottom: 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.footer-logo .logo-mark {
  font-size: 1.8rem;
  color: #eff4f1;
}

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

.footer-brand p {
  max-width: 420px;
  font-size: 0.92rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.62);
}

.footer-col-title {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-links a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  margin-right: 8px;
  background: var(--gold);
  opacity: 0.6;
}

.footer-links a:hover {
  color: #fff;
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.42);
}

.article-page-main {
  min-height: 66vh;
}

.article-head {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px 32px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 34px;
}

.breadcrumb a {
  color: var(--brand);
  transition: opacity 0.2s var(--ease);
}

.breadcrumb a:hover {
  opacity: 0.78;
}

.breadcrumb-sep {
  color: #BDB9B0;
}

.article-channel-tag {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(184, 137, 75, 0.34);
  background: rgba(184, 137, 75, 0.08);
  color: #9b6f3b;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 22px;
}

.article-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.24;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.015em;
  word-break: break-word;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--muted);
}

.meta-date {
  color: #5d645f;
}

.meta-separator {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #c3bdb2;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 38px 24px 48px;
  color: var(--text);
}

.article-body p {
  margin: 0 0 1.6em;
}

.article-body a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(31, 110, 92, 0.32);
  transition: text-decoration-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

.article-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3vw, 2rem);
  line-height: 1.4;
  color: var(--ink);
  margin: 2.4em 0 0.8em;
  padding-top: 0.4em;
  font-weight: 700;
}

.article-body h3 {
  font-size: 1.28rem;
  line-height: 1.5;
  color: var(--ink);
  margin: 2em 0 0.7em;
  font-weight: 700;
}

.article-body blockquote {
  margin: 2em 0;
  padding: 20px 24px;
  border-left: 3px solid var(--brand);
  background: #F0EEE8;
  border-radius: 0 6px 6px 0;
  color: #4B534E;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6em;
  padding-left: 1.2em;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 0.5em;
}

.article-body ul {
  list-style: none;
  padding-left: 0.2em;
}

.article-body ul li {
  position: relative;
  padding-left: 1.6em;
}

.article-body ul li::before {
  content: "";
  position: absolute;
  left: 0.2em;
  top: 0.75em;
  width: 12px;
  height: 1px;
  background: var(--gold);
}

.article-body ol {
  padding-left: 1.4em;
}

.article-body ol li::marker {
  color: var(--brand);
  font-weight: 600;
}

.article-body img {
  width: auto;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 2em auto;
  box-shadow: 0 6px 26px rgba(23, 35, 31, 0.08);
}

.article-body hr {
  margin: 2.6em 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.article-bottom {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px 42px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.tag-item {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.5);
  color: #535B56;
  font-size: 0.78rem;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.tag-item::before {
  content: "#";
  color: var(--gold);
  margin-right: 3px;
}

.tag-item:hover {
  border-color: rgba(31, 110, 92, 0.45);
  background: #fff;
  color: var(--brand);
}

.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 30px 0 0;
}

.pager-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 22px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.pager-card:hover {
  background: #fff;
  border-color: rgba(31, 110, 92, 0.34);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.pager-direction {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.pager-direction svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s var(--ease);
}

.pager-next:hover .pager-direction svg {
  transform: translateX(4px);
}

.pager-prev:hover .pager-direction svg {
  transform: translateX(-4px);
}

.pager-link {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
}

.related-section {
  padding: 72px 0 60px;
  background: #FBFBF8;
  border-top: 1px solid var(--line);
}

.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.related-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.85rem, 3.2vw, 2.6rem);
  color: var(--ink);
  line-height: 1.25;
}

.related-head p {
  max-width: 440px;
  font-size: 0.92rem;
  color: var(--muted);
}

.related-scroll {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 320px;
  gap: 24px;
  overflow-x: auto;
  padding: 4px 4px 18px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--brand) rgba(227, 223, 215, 0.25);
}

.related-scroll::-webkit-scrollbar {
  height: 6px;
}

.related-scroll::-webkit-scrollbar-track {
  background: rgba(227, 223, 215, 0.35);
  border-radius: 99px;
}

.related-scroll::-webkit-scrollbar-thumb {
  background: #a3b8ae;
  border-radius: 99px;
}

.related-card {
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(31, 110, 92, 0.32);
}

.rel-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #EDEBE5;
}

.rel-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.related-card:hover .rel-cover img {
  transform: scale(1.04);
}

.rel-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(23, 35, 31, 0) 62%, rgba(23, 35, 31, 0.08) 100%);
  pointer-events: none;
}

.rel-content {
  padding: 18px 20px 20px;
}

.rel-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 4px;
  background: var(--gold-soft);
  color: #8f6739;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.rel-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
  margin: 12px 0 6px;
  min-height: 3.5em;
}

.rel-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.scroll-tip {
  display: none;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  padding-top: 4px;
}

.scroll-tip svg {
  width: 14px;
  height: 14px;
}

.cta-section {
  position: relative;
  background: var(--deep);
  background-image: linear-gradient(100deg, rgba(23, 35, 31, 0.95) 20%, rgba(31, 110, 92, 0.28)),
    url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 100%;
  background: linear-gradient(180deg, rgba(184, 137, 75, 0.1), rgba(184, 137, 75, 0));
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 74px 0;
}

.cta-copy {
  max-width: 650px;
}

.cta-kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #dbbd90;
  margin-bottom: 18px;
}

.cta-copy h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.35;
  color: #fff;
  margin-bottom: 16px;
}

.cta-copy p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.72);
  max-width: 560px;
}

.cta-inner .btn {
  flex-shrink: 0;
  min-width: 184px;
}

.btn-light {
  background: #F2F1ED;
  color: var(--deep);
}

.btn-light:hover {
  background: #fff;
  color: var(--deep);
}

.missing-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 55vh;
  padding: 96px 24px;
}

.missing-panel {
  text-align: center;
  max-width: 560px;
  padding: 64px 48px;
  border: 1px dashed #c7c2b8;
  border-radius: var(--radius-card);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.missing-panel h1 {
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--ink);
  margin: 18px 0 12px;
}

.missing-panel p {
  color: var(--muted);
  margin-bottom: 28px;
}

.reveal {
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

html.js .reveal:not(.visible) {
  opacity: 0;
  transform: translateY(16px);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html.js .reveal:not(.visible) {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 1440px) {
  :root {
    --container: 1280px;
  }
}

@media (max-width: 1200px) {
  .main-nav {
    gap: 20px;
  }
}

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }

  .burger {
    display: inline-flex;
  }

  .nav-status {
    display: none;
  }

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

  .article-head {
    padding-top: 56px;
  }

  .related-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .related-head p {
    max-width: 100%;
  }
}

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    height: 64px;
  }

  .site-header.scrolled .header-inner {
    height: 60px;
  }

  .logo-mark {
    font-size: 1.62rem;
  }

  .logo-text {
    font-size: 0.94rem;
    letter-spacing: 0.02em;
  }

  .header-actions {
    gap: 8px;
  }

  .header-actions .btn {
    height: 38px;
    padding: 0 14px;
    font-size: 0.9rem;
  }

  .burger {
    width: 38px;
    height: 38px;
  }

  .article-head {
    padding: 44px 20px 24px;
  }

  .breadcrumb {
    margin-bottom: 24px;
  }

  .article-title {
    font-size: clamp(1.75rem, 7.4vw, 2.55rem);
    line-height: 1.32;
  }

  .article-meta-row {
    align-items: flex-start;
  }

  .article-body {
    padding: 26px 20px 40px;
  }

  .article-bottom {
    padding-left: 20px;
    padding-right: 20px;
  }

  .article-pager {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .related-section {
    padding: 54px 0 48px;
  }

  .related-scroll {
    grid-auto-columns: min(320px, 82vw);
    gap: 18px;
    padding-right: 4px;
  }

  .scroll-tip {
    display: flex;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
    padding: 56px 0;
  }

  .cta-copy h2 {
    font-size: 1.9rem;
    line-height: 1.42;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 30px;
  }

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

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

  .missing-panel {
    padding: 44px 22px;
  }
}

@media (max-width: 520px) {
  .header-actions > .btn {
    max-width: 104px;
    padding: 0 10px;
  }

  .article-pager {
    grid-template-columns: 1fr;
  }

  .related-scroll {
    grid-auto-columns: 82vw;
  }
}

/* roulang page: category1 */
:root {
  --bg-page: #F2F1ED;
  --bg-white: #FFFFFF;
  --bg-deep: #17231F;
  --text-title: #1B201E;
  --text-body: #333A36;
  --text-muted: #707873;
  --border-soft: #E3DFD7;
  --brand: #1F6E5C;
  --brand-hover: #185647;
  --brand-soft: rgba(31, 110, 92, 0.08);
  --accent: #B8894B;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-card: 8px;
  --radius-btn: 6px;
  --container: 1200px;
  --content-max: 760px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-float: 0 18px 40px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-body);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  margin: 0 0 0.5em;
  color: var(--text-title);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
}

p {
  margin: 0 0 1em;
}

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

a:hover {
  color: var(--brand-hover);
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  border: 0;
  background: none;
  cursor: pointer;
}

figure {
  margin: 0;
}

.container {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 40px;
  padding-right: 40px;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ---------------------------------------------------------
   Header
--------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-page);
  border-bottom: 1px solid transparent;
  transition: min-height 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  min-height: 80px;
}

.site-header.scrolled {
  min-height: 64px;
  background: rgba(242, 241, 237, 0.85);
  border-color: rgba(220, 214, 202, 0.8);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 80px;
  transition: min-height 0.25s ease;
}

.site-header.scrolled .header-inner {
  min-height: 64px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  color: var(--text-title);
  transition: opacity 0.12s ease;
}

.logo:hover {
  opacity: 0.72;
  color: var(--text-title);
}

.logo-mark {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--brand);
}

.logo-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-title);
}

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

.nav-link {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 24px 0 20px;
  line-height: 1;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text-title);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}

.nav-link.active {
  color: var(--text-title);
  font-weight: 600;
}

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

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

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4C9C81;
}

.burger {
  display: none;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-btn);
  color: var(--text-title);
  background: rgba(255, 255, 255, 0.4);
}

/* ---------------------------------------------------------
   Buttons
--------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.12s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
  border: 1px solid var(--brand);
}

.btn-primary:hover {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}

.btn-outline:hover {
  background: var(--brand-soft);
  border-color: var(--brand-hover);
  color: var(--brand-hover);
}

.btn-light {
  background: #ffffff;
  color: var(--brand);
  border: 1px solid #ffffff;
}

.btn-light:hover {
  background: #f3f1eb;
  border-color: #ffffff;
  color: var(--brand-hover);
}

.btn-outline-light {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.65);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn:active {
  transform: scale(0.98);
}

/* ---------------------------------------------------------
   Page hero
--------------------------------------------------------- */
.page-hero {
  position: relative;
  padding: 96px 0 84px;
  background:
    linear-gradient(135deg, rgba(242, 241, 237, 0.78) 30%, rgba(242, 241, 237, 0.46) 100%),
    linear-gradient(140deg, rgba(23, 35, 31, 0.22), rgba(23, 35, 31, 0.08)),
    url("/assets/images/backpic/back-1.webp") center / cover no-repeat;
  border-bottom: 1px solid var(--border-soft);
}

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

.chapter-mark {
  display: inline-block;
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb span {
  opacity: 0.5;
}

.page-hero h1 {
  font-size: clamp(2.6rem, 5.4vw, 4.8rem);
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-title);
  line-height: 1.1;
}

.hero-lead {
  max-width: 560px;
  font-size: 1.05rem;
  color: var(--text-body);
  margin-bottom: 26px;
  line-height: 1.8;
}

.hero-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.legend-line {
  width: 36px;
  height: 2px;
  display: inline-block;
}

.legend-line.gold {
  background: var(--accent);
}

.legend-line.brand {
  background: var(--brand);
}

/* ---------------------------------------------------------
   Split guide section
--------------------------------------------------------- */
.content-section {
  padding: 4.5rem 0;
}

.content-section.alt {
  background: var(--bg-white);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.section-head {
  margin-bottom: 40px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--brand);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  margin-bottom: 12px;
}

.section-head p {
  max-width: 720px;
  color: var(--text-muted);
  margin-bottom: 0;
}

.grid-split-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: start;
}

.page-toc {
  position: sticky;
  top: 120px;
  align-self: start;
}

.page-toc-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.toc-guide {
  border-top: 1px solid var(--border-soft);
  padding-top: 22px;
}

.toc-guide h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.toc-guide > p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.toc-links {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--border-soft);
}

.toc-links li {
  border-bottom: 1px solid var(--border-soft);
}

.toc-links a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 2px;
  color: var(--text-body);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.toc-links a:hover {
  color: var(--brand);
  padding-left: 8px;
}

.toc-links span {
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--accent);
}

.toc-mini-note {
  margin-top: 20px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.toc-panels {
  display: grid;
  gap: 24px;
}

.guide-panel {
  scroll-margin-top: 120px;
  background: var(--bg-white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 30px 32px;
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 20px;
  align-items: center;
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.guide-panel:hover {
  border-color: var(--border-soft);
  box-shadow: var(--shadow-float);
  transform: translateY(-2px);
}

.guide-panel h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.guide-panel p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
  line-height: 1.75;
}

.guide-panel figure {
  overflow: hidden;
  border-radius: var(--radius-card);
  aspect-ratio: 4 / 3;
  background: var(--bg-page);
}

.guide-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------------------------------------------------------
   Visual scope dark section
--------------------------------------------------------- */
.dark-zone {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.82);
}

.dark-zone .section-eyebrow {
  color: #83BCAA;
}

.dark-zone .section-head h2 {
  color: #ffffff;
}

.dark-zone .section-head p {
  color: rgba(255, 255, 255, 0.66);
}

.visual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-top: 20px;
}

.visual-copy-overline {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.visual-copy h3 {
  color: #ffffff;
  font-size: 1.7rem;
  line-height: 1.35;
  margin-bottom: 12px;
}

.visual-copy p {
  color: rgba(255, 255, 255, 0.67);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 0;
}

.visual-figure {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.25);
}

.visual-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.visual-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: inherit;
  pointer-events: none;
}

.mini-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.48);
}

.visual-rule {
  display: flex;
  align-items: center;
  gap: 12px;
}

.visual-rule::before {
  content: "";
  width: 56px;
  height: 1px;
  background: rgba(184, 137, 75, 0.7);
}

/* ---------------------------------------------------------
   Principles / highlights
--------------------------------------------------------- */
.principles-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border-soft);
}

.principle-item {
  display: grid;
  grid-template-columns: 72px 1fr 160px;
  gap: 24px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-soft);
  transition: padding-left 0.25s ease, background 0.25s ease;
}

.principle-item:hover {
  padding-left: 10px;
  background: rgba(255, 255, 255, 0.3);
}

.principle-no {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}

.principle-copy h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.principle-copy p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
  max-width: 560px;
}

.principle-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-page);
}

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

/* ---------------------------------------------------------
   Path / steps
--------------------------------------------------------- */
.path-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 42px;
  border-top: 1px solid var(--border-soft);
}

.step-item {
  position: relative;
  padding: 30px 24px 20px 48px;
  border-bottom: 1px solid var(--border-soft);
  border-left: 1px solid var(--border-soft);
}

.step-dot {
  position: absolute;
  top: 32px;
  left: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(31, 110, 92, 0.14);
}

.step-index {
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--text-title);
  font-weight: 700;
  display: block;
  margin-bottom: 10px;
  line-height: 1;
}

.step-item h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------------------------------------------------------
   FAQ
--------------------------------------------------------- */
.faq-section {
  padding: 4.5rem 0;
}

.faq-list {
  margin-top: 32px;
  border-top: 1px solid var(--border-soft);
}

.faq-item {
  position: relative;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.25s ease;
}

.faq-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  height: 100%;
  width: 2px;
  background: var(--brand);
  opacity: 0;
  transform: scaleY(0);
  transform-origin: center;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.faq-item.open::before {
  opacity: 1;
  transform: scaleY(1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 6px;
  text-align: left;
  color: var(--text-title);
  font-weight: 600;
  font-size: 1rem;
}

.faq-no {
  font-family: var(--serif);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.faq-text {
  flex: 1;
}

.faq-icon {
  flex: none;
  position: relative;
  width: 18px;
  height: 18px;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  top: 50%;
  height: 2px;
  background: var(--text-muted);
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform: translateY(-50%);
}

.faq-icon::after {
  transform: translateY(-50%) rotate(90deg);
}

.faq-item.open .faq-icon::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 6px 24px 56px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ---------------------------------------------------------
   CTA band
--------------------------------------------------------- */
.cta-band {
  background: var(--bg-deep);
  padding: 4.5rem 0 5rem;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-copy h2 {
  color: #ffffff;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 12px;
}

.cta-copy p {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 0;
  font-size: 1rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  flex: none;
}

/* ---------------------------------------------------------
   Footer
--------------------------------------------------------- */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.9rem;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  display: inline-flex;
  margin-bottom: 12px;
}

.footer-brand .logo-mark {
  color: #7ABBA5;
}

.footer-brand .logo-text {
  color: #ffffff;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.56);
  line-height: 1.8;
  max-width: 400px;
  margin: 0;
}

.footer-col-title {
  color: #ffffff;
  font-weight: 600;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 3rem;
  margin-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.46);
}

/* ---------------------------------------------------------
   Mobile drawer
--------------------------------------------------------- */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(23, 35, 31, 0.45);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 240;
  width: min(400px, 90vw);
  height: 100vh;
  background: var(--bg-page);
  display: flex;
  flex-direction: column;
  padding: 24px 30px 32px;
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.2);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.3s var(--ease), visibility 0.3s ease;
}

.mobile-drawer.open {
  transform: translateX(0);
  visibility: visible;
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.drawer-close {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-btn);
  background: #fff;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--text-title);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 4px;
}

.drawer-nav a {
  padding: 14px 4px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-body);
  font-size: 1.08rem;
  font-weight: 500;
}

.drawer-nav a.active {
  color: var(--brand);
  font-weight: 600;
}

.drawer-link-more {
  color: var(--text-muted);
}

.drawer-btn {
  width: 100%;
  margin-top: auto;
}

/* ---------------------------------------------------------
   Media queries
--------------------------------------------------------- */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }

  .burger {
    display: inline-flex;
  }

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

  .nav-status {
    display: none;
  }

  .header-inner {
    min-height: 72px;
  }

  .site-header.scrolled .header-inner {
    min-height: 60px;
  }

  .page-hero {
    padding: 78px 0 68px;
  }

  .grid-split-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .page-toc {
    position: static;
  }

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

  .visual-row {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    min-height: 64px;
  }

  .header-inner {
    min-height: 64px;
  }

  .site-header.scrolled .header-inner {
    min-height: 56px;
  }

  .logo-mark {
    font-size: 1.7rem;
  }

  .logo-text {
    font-size: 0.8rem;
  }

  .header-actions .btn-primary {
    padding: 0 12px;
    height: 36px;
    font-size: 0.85rem;
  }

  .header-actions .btn-primary span {
    display: none;
  }

  .page-hero {
    padding: 60px 0 52px;
  }

  .page-hero h1 {
    font-size: 2.4rem;
  }

  .hero-lead {
    font-size: 0.95rem;
  }

  .content-section,
  .faq-section {
    padding: 3.2rem 0;
  }

  .section-head p {
    font-size: 0.92rem;
  }

  .explore-card .inner {
    gap: 24px;
  }

  .toc-panels {
    gap: 16px;
  }

  .guide-panel {
    padding: 22px 18px;
    grid-template-columns: 1fr;
  }

  .guide-panel figure {
    aspect-ratio: 16 / 9;
  }

  .visual-figure img {
    aspect-ratio: 4 / 3;
  }

  .principles-list {
    display: block;
  }

  .principle-item {
    grid-template-columns: 48px 1fr;
    gap: 16px;
    align-items: start;
    padding: 24px 0;
  }

  .principle-media {
    display: none;
  }

  .principle-no {
    font-size: 1.6rem;
  }

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

  .step-item:nth-child(n) {
    border-left: 0;
  }

  .step-item:last-child {
    border-bottom: 1px solid var(--border-soft);
  }

  .faq-question {
    padding: 18px 0;
  }

  .faq-answer-inner {
    padding-left: 40px;
  }

  .cta-band {
    padding: 3rem 0;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    flex: 1 1 100%;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* roulang page: category2 */
:root {
  --bg-page: #F2F1ED;
  --surface: #FFFFFF;
  --ink: #1B201E;
  --text: #333A36;
  --muted: #707873;
  --line: #E3DFD7;
  --brand: #1F6E5C;
  --brand-dark: #185647;
  --accent: #B8894B;
  --dark: #17231F;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-float: 0 18px 40px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --radius-btn: 6px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
a:hover {
  color: var(--brand-dark);
}
button {
  font-family: var(--sans);
  border: none;
  background: none;
  cursor: pointer;
}
input {
  font-family: var(--sans);
}
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
}
.section-space {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(242, 241, 237, 0.85);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid rgba(227, 223, 215, 0.8);
  box-shadow: 0 6px 24px rgba(23, 35, 31, 0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 32px;
  transition: height 0.3s ease;
}
.site-header.scrolled .header-inner {
  height: 60px;
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  flex-shrink: 0;
  color: var(--ink);
}
.logo .logo-mark {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--brand);
  line-height: 1;
  font-family: var(--sans);
}
.logo .logo-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
}
.logo:hover {
  opacity: 0.78;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0 auto;
}
.main-nav .nav-link {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: #3B453F;
  padding: 10px 0;
  white-space: nowrap;
}
.main-nav .nav-link::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s var(--ease);
}
.main-nav .nav-link:hover {
  color: var(--brand);
}
.main-nav .nav-link.active {
  color: var(--ink);
}
.main-nav .nav-link.active::after {
  transform: scaleX(1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 26px;
  padding: 0 10px;
  border: 1px solid rgba(31, 110, 92, 0.3);
  border-radius: 999px;
  font-size: 0.78rem;
  color: #2B6C5B;
  background: rgba(31, 110, 92, 0.05);
  white-space: nowrap;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #42A484;
  box-shadow: 0 0 0 3px rgba(66, 164, 132, 0.18);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.5;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.15s ease, box-shadow 0.3s ease;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  border: 1px solid var(--brand);
}
.btn-primary:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #fff;
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 1px solid rgba(31, 110, 92, 0.55);
}
.btn-outline:hover {
  background: rgba(31, 110, 92, 0.08);
  border-color: var(--brand);
  color: var(--brand-dark);
}
.btn-outline-light {
  background: transparent;
  color: #F2F1ED;
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.btn-outline-light:hover {
  border-color: #FFFFFF;
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}
.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-weight: 500;
}
.btn-arrow span {
  transition: transform 0.2s var(--ease);
}
.btn-arrow:hover span {
  transform: translateX(4px);
}
.header-actions .btn {
  padding: 9px 22px;
  font-size: 0.9rem;
}
.burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}
.burger:hover {
  background: rgba(31, 110, 92, 0.06);
}
.burger svg {
  display: block;
}

/* Mobile drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(23, 35, 31, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 110;
}
.drawer-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(84vw, 360px);
  height: 100vh;
  background: var(--bg-page);
  z-index: 120;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  transform: translateX(105%);
  transition: transform 0.3s var(--ease);
  box-shadow: -12px 0 40px rgba(23, 35, 31, 0.12);
  overflow-y: auto;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.drawer-close {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-size: 1.2rem;
  transition: all 0.2s ease;
}
.drawer-close:hover {
  background: rgba(31, 110, 92, 0.07);
  border-color: rgba(31, 110, 92, 0.4);
}
.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.drawer-link {
  padding: 16px 2px;
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid rgba(227, 223, 215, 0.7);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.drawer-link:hover {
  color: var(--brand);
  padding-left: 6px;
}
.drawer-link.active {
  color: var(--brand);
}
.drawer-footer {
  margin-top: auto;
  padding-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.drawer-footer .btn {
  width: 100%;
}

/* Page Hero / category header */
.page-head {
  padding: 168px 0 80px;
  background:
    linear-gradient(105deg, rgba(242, 241, 237, 0.96) 0%, rgba(242, 241, 237, 0.76) 55%, rgba(242, 241, 237, 0.88) 100%),
    url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.page-head-inner {
  max-width: 920px;
  position: relative;
}
.page-ch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 18px;
}
.page-ch::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--accent);
}
.page-breadcrumb {
  margin-top: 18px;
  font-size: 0.86rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-breadcrumb a {
  color: var(--muted);
}
.page-breadcrumb a:hover {
  color: var(--brand);
}
.page-breadcrumb .sep {
  color: #AAAFAB;
}
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 5.4vw, 4.8rem);
  line-height: 1.12;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}
.page-head .page-lead {
  font-size: 1.05rem;
  color: var(--text);
  max-width: 680px;
  line-height: 1.9;
}

/* Section headings */
.section-head {
  margin-bottom: 40px;
  max-width: 760px;
}
.section-head .section-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}
.section-head .section-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  line-height: 1.25;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-head p {
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 640px;
}

/* Route guide section */
.login-route {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.route-layer {
  position: relative;
}
.route-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
  margin-top: 30px;
}
.route-track::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: var(--line);
}
.route-step {
  position: relative;
  text-align: center;
  padding: 0 10px;
}
.route-step .step-badge {
  width: 68px;
  height: 68px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: var(--bg-page);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--brand);
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}
.route-step:hover .step-badge {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
  box-shadow: 0 8px 20px rgba(31, 110, 92, 0.14);
}
.route-step h3 {
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 12px;
  font-weight: 600;
}
.route-step p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 300px;
  margin: 0 auto;
}

/* Split content / two blocks */
.double-split {
  background: var(--bg-page);
}
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 78px;
  align-items: center;
}
.split-row + .split-row {
  margin-top: clamp(4rem, 8vw, 6.5rem);
}
.split-text .split-index {
  color: var(--accent);
  font-size: 0.84rem;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.split-text .split-index::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}
.split-text h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 20px;
}
.split-text p {
  color: var(--text);
  margin-bottom: 18px;
  font-size: 0.98rem;
  max-width: 520px;
}
.split-text .note-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 26px;
}
.split-text .note-list li {
  padding-left: 22px;
  position: relative;
  color: var(--text);
  font-size: 0.94rem;
  margin-bottom: 10px;
}
.split-text .note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1.5px;
  background: var(--brand);
}
.split-media {
  position: relative;
}
.split-media figure {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  background: var(--surface);
  border: 1px solid var(--line);
}
.split-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.split-media:hover img {
  transform: scale(1.02);
}
.split-media.right {
  order: 1;
}
.split-media.right + .split-text {
  order: 2;
}
@media (max-width: 1023px) {
  .split-row {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .split-media.right {
    order: 0;
  }
  .split-media.right + .split-text {
    order: 1;
  }
}

/* Login checklist / key points */
.checklist-wrap {
  background: var(--dark);
  color: #E8EDEA;
}
.checklist-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.checklist-copy h2 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.35;
  color: #fff;
  margin-bottom: 20px;
}
.checklist-copy p {
  color: rgba(232, 237, 234, 0.75);
  max-width: 380px;
}
.checklist-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.check-item {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: background 0.3s ease, transform 0.25s ease, border-color 0.3s ease;
}
.check-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(184, 137, 75, 0.42);
  transform: translateY(-3px);
}
.check-item .ck-num {
  font-family: var(--serif);
  font-size: 1.45rem;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}
.check-item h3 {
  color: #fff;
  font-size: 1.08rem;
  margin-bottom: 8px;
  font-weight: 600;
}
.check-item p {
  color: rgba(232, 237, 234, 0.66);
  font-size: 0.87rem;
  line-height: 1.7;
  margin: 0;
}

/* FAQ */
.faq-section {
  background: var(--surface);
}
.faq-wrap {
  max-width: 920px;
  margin-top: 50px;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-child {
  border-top: 1px solid var(--line);
}
.faq-q {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 4px;
  cursor: pointer;
  transition: background 0.2s ease;
  border-left: 2px solid transparent;
}
.faq-item:hover .faq-q {
  background: rgba(242, 241, 237, 0.45);
}
.faq-item.active .faq-q {
  border-left-color: var(--brand);
}
.faq-q .faq-num {
  font-family: var(--serif);
  color: var(--accent);
  font-size: 0.98rem;
  padding-top: 6px;
  min-width: 34px;
}
.faq-q h3 {
  flex: 1;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.6;
  padding-top: 4px;
}
.faq-q .faq-icon {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  color: var(--brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  font-weight: 400;
  transition: all 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s var(--ease), padding 0.3s ease;
}
.faq-a-inner {
  padding: 0 58px 28px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.9;
  max-width: 820px;
}
.faq-item.active .faq-a {
  max-height: 500px;
}
.faq-item.active .faq-a-inner {
  padding-top: 0;
}

/* CTA band */
.cta-band {
  background:
    linear-gradient(140deg, rgba(23, 35, 31, 0.18) 0%, rgba(23, 35, 31, 0.08) 40%, rgba(242, 241, 237, 0.92) 100%),
    url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  background-color: var(--dark);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: clamp(3rem, 6vw, 5rem) 0;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.7rem);
  color: #fff;
  margin-bottom: 12px;
}
.cta-text p {
  color: rgba(232, 237, 234, 0.76);
  max-width: 620px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-actions .btn-primary {
  background: #F2F1ED;
  color: var(--dark);
  border-color: #F2F1ED;
}
.cta-actions .btn-primary:hover {
  background: #FFFFFF;
  color: var(--brand-dark);
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(232, 237, 234, 0.75);
  padding: 64px 0 0;
}
.site-footer .container {
  padding-bottom: 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo .logo-mark {
  color: #6FC4A4;
}
.footer-brand .logo .logo-text {
  color: #fff;
}
.footer-brand p {
  color: rgba(232, 237, 234, 0.62);
  font-size: 0.92rem;
  max-width: 330px;
  line-height: 1.9;
}
.footer-col-title {
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 20px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: rgba(232, 237, 234, 0.66);
  font-size: 0.92rem;
  width: fit-content;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: #FFFFFF;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.82rem;
  color: rgba(232, 237, 234, 0.5);
}
.footer-bottom span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Shared animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.reveal {
  opacity: 0;
}
.reveal.animate {
  animation: fadeUp 0.6s var(--ease) forwards;
}

/* Responsive */
@media (max-width: 1439px) {
  .container {
    max-width: 1200px;
  }
}
@media (max-width: 1023px) {
  .container {
    padding: 0 32px;
  }
  .main-nav {
    display: none;
  }
  .header-actions .nav-status {
    display: none;
  }
  .burger {
    display: flex;
  }
  .header-inner {
    gap: 16px;
  }
  .page-head {
    padding: 130px 0 60px;
  }
  .route-track {
    grid-template-columns: 1fr;
    gap: 36px;
    max-width: 460px;
    margin-left: auto;
    margin-right: auto;
  }
  .route-track::before {
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: calc(100% - 70px);
    top: 68px;
  }
  .route-step .step-badge {
    margin: 0 auto 18px;
  }
  .checklist-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .checklist-copy p {
    max-width: 680px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}
@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .site-header {
    top: 0;
  }
  .header-inner,
  .site-header.scrolled .header-inner {
    height: 64px;
  }
  .logo .logo-mark {
    font-size: 1.6rem;
  }
  .logo .logo-text {
    font-size: 0.85rem;
  }
  .header-actions .btn {
    display: none;
  }
  .burger {
    display: flex;
  }
  .page-head {
    padding: 112px 0 46px;
  }
  .page-head h1 {
    font-size: clamp(2.2rem, 9vw, 3.4rem);
  }
  .page-head .page-lead {
    font-size: 0.95rem;
    line-height: 1.8;
  }
  .section-space {
    padding: 4.5rem 0;
  }
  .route-track {
    gap: 28px;
  }
  .route-step p {
    max-width: 300px;
  }
  .split-row {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .split-media img {
    aspect-ratio: 4 / 3;
  }
  .checklist-group {
    grid-template-columns: 1fr;
  }
  .faq-section .section-head h2 {
    font-size: 1.9rem;
  }
  .faq-q {
    gap: 14px;
    padding: 20px 0;
  }
  .faq-a-inner {
    padding: 0 20px 24px 48px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 26px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
  }
}

/* roulang page: category3 */
:root {
  --bg-page: #F2F1ED;
  --bg-white: #FFFFFF;
  --bg-dark: #17231F;
  --text-title: #1B201E;
  --text-body: #333A36;
  --text-muted: #707873;
  --line: #E3DFD7;
  --brand: #1F6E5C;
  --brand-hover: #185647;
  --brand-soft: rgba(31, 110, 92, 0.08);
  --gold: #B8894B;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-hover: 0 18px 40px rgba(0,0,0,.08);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container: 1200px;
  --space-lg: clamp(4rem, 9vw, 8rem);
  --space-md: clamp(3rem, 6vw, 5rem);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-body);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
::selection { background: rgba(31,110,92,.18); color: var(--text-title); }
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(242,241,237,.82);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid rgba(227,223,215,.65);
  transition: background .35s ease, box-shadow .35s ease;
}
.site-header.scrolled {
  background: rgba(242,241,237,.9);
  box-shadow: 0 6px 24px rgba(23,35,31,.05);
}
.header-inner {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: height .3s ease;
}
.site-header.scrolled .header-inner { height: 64px; }
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  color: var(--text-title);
  transition: opacity .12s ease;
  white-space: nowrap;
}
.logo:active { opacity: .72; }
.logo-mark {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--brand);
  line-height: 1;
}
.logo-text {
  font-size: .9rem;
  color: var(--text-title);
  font-weight: 600;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  font-size: .95rem;
  color: var(--text-body);
  transition: color .2s ease;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover { color: var(--brand); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--brand); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 26px;
  padding: 0 10px;
  border-radius: 50px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: .78rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4CAF7D;
  box-shadow: 0 0 0 3px rgba(76,175,125,.15);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .15s ease, box-shadow .25s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--brand);
  color: #fff;
  border: 1px solid var(--brand);
}
.btn-primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); box-shadow: 0 8px 20px rgba(31,110,92,.16); }
.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}
.btn-outline:hover { background: var(--brand-soft); border-color: var(--brand-hover); }
.btn-light {
  background: #fff;
  color: var(--brand);
  border: 1px solid #fff;
}
.btn-light:hover { background: rgba(255,255,255,.92); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-body);
  font-weight: 600;
  font-size: .95rem;
  transition: color .2s ease, gap .2s ease;
}
.text-link:hover { color: var(--brand); }
.text-link:hover span { transform: translateX(4px); }
.text-link span { display: inline-block; transition: transform .25s ease; }
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  align-items: center;
  justify-content: center;
  color: var(--text-title);
  transition: border-color .2s ease, background .2s ease;
}
.burger:hover { border-color: var(--brand); background: var(--brand-soft); }
/* Hero head */
.page-head {
  position: relative;
  padding: clamp(4rem,8vw,6.5rem) 0 clamp(2.8rem,5vw,4rem);
  background-image: linear-gradient(rgba(242,241,237,.78), rgba(242,241,237,.68)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--line);
}
.page-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: rgba(255,255,255,.8);
}
.chapter-mark {
  display: inline-block;
  font-family: var(--serif);
  font-size: .92rem;
  color: var(--gold);
  letter-spacing: .14em;
  margin-bottom: 2px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 26px;
}
.breadcrumb a { color: var(--text-muted); transition: color .2s ease; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: #b8b2a8; }
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem,5.4vw,4.4rem);
  line-height: 1.18;
  font-weight: 600;
  color: var(--text-title);
  margin: 10px 0 16px;
  letter-spacing: .01em;
}
.page-intro {
  max-width: 620px;
  font-size: 1.02rem;
  color: var(--text-body);
  line-height: 1.85;
}

/* Section base */
.section-pad { padding: var(--space-lg) 0; }
.section-tight { padding: var(--space-md) 0; }
.section-head { margin-bottom: clamp(2.4rem,5vw,4rem); }
.section-head .chapter-mark { margin-bottom: 6px; }
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem,3.5vw,2.9rem);
  line-height: 1.25;
  color: var(--text-title);
  font-weight: 600;
}
.section-head p {
  max-width: 560px;
  margin-top: 14px;
  color: var(--text-muted);
}

/* Scenario rows */
.scenario-section { padding: var(--space-md) 0; }
.scenario-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: clamp(1.8rem,5vw,4.6rem);
  padding: clamp(2rem,4vw,3.6rem) 0;
  transition: opacity .5s ease, transform .6s cubic-bezier(.22,1,.36,1);
}
.scenario-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.scenario-media img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.22,1,.36,1);
}
.scenario-row:hover .scenario-media img { transform: scale(1.025); }
.scenario-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 1px rgba(23,35,31,.06);
  pointer-events: none;
}
.scenario-content h3 {
  font-family: var(--serif);
  font-size: clamp(1.4rem,2.4vw,2rem);
  color: var(--text-title);
  line-height: 1.4;
  margin-bottom: 16px;
}
.scenario-content p {
  color: var(--text-body);
  max-width: 520px;
  margin-bottom: 20px;
}
.scenario-tag {
  display: inline-block;
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--gold);
  border-bottom: 1px solid rgba(184,137,75,.4);
  padding-bottom: 4px;
  margin-bottom: 14px;
}

/* Coverage number list */
.coverage-section {
  background: var(--bg-white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: var(--space-lg) 0;
}
.coverage-list { border-top: 1px solid var(--line); }
.coverage-item {
  display: grid;
  grid-template-columns: 90px 200px 1fr;
  align-items: baseline;
  gap: 24px;
  padding: 26px 8px;
  border-bottom: 1px solid var(--line);
  transition: background .2s ease, padding-left .3s ease;
}
.coverage-item:hover { background: rgba(242,241,237,.4); padding-left: 20px; }
.coverage-num {
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--line);
  line-height: 1;
  font-weight: 600;
  transition: color .2s ease;
}
.coverage-item:hover .coverage-num { color: var(--gold); }
.coverage-title {
  font-size: 1.06rem;
  color: var(--text-title);
  font-weight: 700;
}
.coverage-desc {
  color: var(--text-muted);
  font-size: .95rem;
}

/* Process section */
.process-section {
  background: var(--bg-dark);
  padding: var(--space-lg) 0;
  color: #fff;
}
.process-section .section-head h2,
.process-section .section-head .chapter-mark { color: #fff; }
.process-section .section-head p { color: rgba(255,255,255,.6); }
.steps-connect {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5,1fr);
  gap: 16px;
  margin-top: clamp(2rem,4vw,3.4rem);
}
.steps-connect::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, rgba(184,137,75,.7), rgba(255,255,255,.2), rgba(184,137,75,.7));
}
.step-node {
  position: relative;
  text-align: center;
  padding: 0 12px;
}
.step-dot {
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 2px solid var(--gold);
  color: #fff;
  font-family: var(--serif);
  font-size: .95rem;
  font-weight: 600;
  margin: 0 auto 14px;
  transition: transform .3s ease, background .3s ease;
}
.step-node:hover .step-dot {
  transform: translateY(-4px);
  background: var(--gold);
}
.step-title {
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 8px;
}
.step-desc {
  color: rgba(255,255,255,.58);
  font-size: .85rem;
}

/* FAQ */
.faq-section { background: var(--bg-page); }
.faq-list { border-top: 1px solid var(--line); max-width: 920px; }
.faq-item { border-bottom: 1px solid var(--line); position: relative; }
.faq-item.open::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--brand);
}
.faq-question {
  display: grid;
  grid-template-columns: 52px 1fr 42px;
  gap: 12px;
  align-items: center;
  padding: 22px 6px;
  width: 100%;
  text-align: left;
  color: var(--text-title);
  font-weight: 600;
  font-size: 1.02rem;
  transition: color .2s ease;
}
.faq-question:hover { color: var(--brand); }
.faq-number {
  font-family: var(--serif);
  color: var(--gold);
  font-size: 1.05rem;
}
.faq-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 1.4rem;
  font-weight: 300;
  transition: transform .3s ease, background .2s ease, color .2s ease;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); background: var(--brand); color: #fff; border-color: var(--brand); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.22,1,.36,1);
}
.faq-answer p {
  padding: 0 64px 24px 70px;
  color: var(--text-muted);
  max-width: 760px;
}

/* CTA */
.cta-bar {
  background: var(--bg-dark);
  padding: clamp(3.4rem,7vw,5.5rem) 0;
  color: #fff;
}
.cta-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-info h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem,3vw,2.6rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 10px;
}
.cta-info p { color: rgba(255,255,255,.62); max-width: 520px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.68);
  padding: clamp(3rem,6vw,5rem) 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer-brand .logo { flex-wrap: wrap; }
.footer-brand .logo-mark { color: #fff; }
.footer-brand .logo-text {
  color: #fff;
  font-size: .9rem;
}
.footer-brand p {
  font-size: .88rem;
  line-height: 1.75;
  color: rgba(255,255,255,.52);
  margin-top: 16px;
  max-width: 300px;
}
.footer-col-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: rgba(255,255,255,.58);
  font-size: .9rem;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover { color: #fff; padding-left: 6px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  padding: 24px 0 32px;
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom span:first-child { color: rgba(255,255,255,.64); }

/* Reveal animation utility */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s cubic-bezier(.22,1,.36,1), transform .6s cubic-bezier(.22,1,.36,1);
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition-duration: .001s !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 1024px) {
  .header-inner { height: 64px; }
  .page-head h1 { font-size: clamp(2.3rem, 5vw, 3.4rem); }
  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(82vw, 360px);
    height: 100vh;
    background: var(--bg-page);
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 110px 36px 36px;
    box-shadow: -20px 0 50px rgba(0,0,0,.16);
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.22,1,.36,1);
    z-index: 1000;
    overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link { padding: 14px 12px; font-size: 1.3rem; font-family: var(--serif); }
  .nav-link::after { left: 12px; right: auto; width: 30px; }
  .nav-link.active::after { transform: scaleX(1); }
  .header-actions .btn-primary { display: none; }
  .nav-status { height: 28px; }
  .burger { display: inline-flex; }
  .scenario-row { grid-template-columns: 1fr; }
  .scenario-media { max-width: 640px; }
  .coverage-item { grid-template-columns: 70px 1fr; row-gap: 8px; }
  .coverage-desc { grid-column: 2; }
  .steps-connect { grid-template-columns: repeat(5, minmax(150px,1fr)); overflow-x: auto; padding-bottom: 14px; -webkit-overflow-scrolling: touch; }
}
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .header-inner { gap: 12px; }
  .logo-mark { font-size: 1.55rem; }
  .logo-text { font-size: .8rem; }
  .nav-status { display: none; }
  .page-head { padding-top: 3.2rem; padding-bottom: 2.2rem; }
  .page-head h1 { font-size: 2.2rem; }
  .breadcrumb { margin-bottom: 18px; font-size: .78rem; }
  .chapter-mark { font-size: .74rem; }
  .page-intro { font-size: .95rem; }
  .section-pad { padding: 4.2rem 0; }
  .section-head p { font-size: .95rem; }
  .scenario-row { gap: 20px; padding: 2.2rem 0; }
  .scenario-content h3 { font-size: 1.35rem; }
  .scenario-media img { aspect-ratio: 4/3; }
  .coverage-item { grid-template-columns: 1fr; padding: 18px 2px; gap: 4px; }
  .coverage-item:hover { padding-left: 8px; }
  .coverage-num { font-size: 1.7rem; }
  .coverage-title { font-size: 1rem; }
  .coverage-desc { font-size: .88rem; }
  .steps-connect { grid-template-columns: repeat(5, 190px); }
  .faq-question { grid-template-columns: 38px 1fr 34px; padding: 18px 2px; font-size: .95rem; }
  .faq-answer p { padding: 0 20px 20px 50px; }
  .cta-bar .container { 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: 36px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

/* roulang page: category4 */
:root{
  --bg:#F2F1ED;
  --surface:#FFFFFF;
  --dark:#17231F;
  --ink:#1B201E;
  --body:#333A36;
  --muted:#707873;
  --line:#E3DFD7;
  --brand:#1F6E5C;
  --brand-dark:#185647;
  --accent:#B8894B;
  --focus:rgba(31,110,92,.2);
  --shadow-sm:0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 18px 40px rgba(0,0,0,.08);
  --r-sm:4px;
  --r-md:8px;
  --r-lg:12px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --container:1200px;
  --gutter:clamp(4.5rem,9vw,8rem);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--body);
  line-height:1.85;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input{font:inherit;border:none;background:none;color:inherit}
button{cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding-left:40px;padding-right:40px;width:100%}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:6px;
  font-size:.95rem;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease,color .3s ease,transform .15s ease,box-shadow .3s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 2px 8px rgba(31,110,92,.14);
}
.btn-primary:hover{background:var(--brand-dark)}
.btn-outline{
  background:transparent;
  border-color:rgba(31,110,92,.5);
  color:var(--brand);
}
.btn-outline:hover{
  background:rgba(31,110,92,.08);
  border-color:var(--brand);
}
.btn-white-outline{
  background:transparent;
  border-color:rgba(255,255,255,.65);
  color:#fff;
}
.btn-white-outline:hover{
  background:rgba(255,255,255,.1);
  border-color:#fff;
}
.btn .arrow{margin-left:4px;transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(4px)}
.text-link{
  color:var(--brand);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:color .2s;
}
.text-link:hover{color:var(--brand-dark)}
.eyebrow{
  font-size:.82rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:600;
  margin-bottom:14px;
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);display:inline-block}

/* header */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(242,241,237,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(227,223,215,.7);
  transition:background .3s,box-shadow .3s,border-color .3s,min-height .3s;
  min-height:76px;
}
body.has-scroll .site-header{
  background:rgba(242,241,237,.88);
  box-shadow:0 8px 28px rgba(0,0,0,.05);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:76px;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:9px;transition:opacity .12s;flex-shrink:0}
.logo:active{opacity:.62}
.logo-mark{
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.65rem;
  font-weight:700;
  color:var(--dark);
  background:var(--dark);
  letter-spacing:-.04em;
  border-radius:8px;
  padding:6px 10px 7px;
  line-height:1;
  display:inline-flex;
  color:#fff;
}
.logo-text{
  font-family:var(--serif);
  font-size:.8rem;
  color:var(--dark);
  font-weight:600;
  letter-spacing:.1em;
  line-height:1.2;
  display:flex;
  align-items:center;
}
.main-nav{display:flex;gap:6px;flex:1;justify-content:center}
.nav-link{
  position:relative;
  font-size:.96rem;
  color:var(--dark);
  font-weight:500;
  padding:10px 14px;
  border-radius:6px;
  transition:color .25s,background .25s;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(31,110,92,.05)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-status{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border:1px solid rgba(31,110,92,.24);
  border-radius:20px;
  background:#fff;
  font-size:.76rem;
  font-weight:500;
  color:var(--brand);
}
.status-dot{width:6px;height:6px;border-radius:50%;background:#3FB17E;box-shadow:0 0 0 3px rgba(63,177,126,.16);display:block}
.burger{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:6px;
  align-items:center;
  justify-content:center;
  color:var(--dark);
  background:var(--surface);
  transition:border-color .2s,color .2s;
}
.burger:hover{border-color:var(--brand);color:var(--brand)}

/* category hero */
.category-hero{
  padding:140px 0 54px;
  border-bottom:1px solid var(--line);
  background:var(--bg);
  position:relative;
  overflow:hidden;
}
.category-hero .container{position:relative;z-index:2}
.chapter-mark{
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.chapter-mark::after{content:"";height:1px;width:44px;background:var(--accent)}
.breadcrumb{
  font-size:.88rem;
  color:var(--muted);
  margin-bottom:18px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb-sep{opacity:.5;font-size:.75rem}
.category-title{
  font-family:var(--serif);
  font-size:clamp(2.6rem,5.4vw,4.4rem);
  line-height:1.15;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.02em;
}
.category-lead{
  max-width:650px;
  margin-top:18px;
  font-size:1.05rem;
  color:var(--muted);
  line-height:1.9;
}
.quick-links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.quick-links a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border:1px solid var(--line);
  background:#fff;
  padding:7px 15px;
  border-radius:30px;
  font-size:.85rem;
  font-weight:500;
  color:var(--body);
  transition:background .2s,color .2s,border-color .2s,transform .2s;
}
.quick-links a:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}

/* main spacing */
.page-main{padding-top:0}
.section-block{padding-top:var(--gutter);padding-bottom:var(--gutter)}
.section-head{max-width:760px;margin-bottom:46px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{
  font-family:var(--serif);
  font-size:clamp(1.9rem,3.5vw,3rem);
  line-height:1.25;
  font-weight:600;
  color:var(--ink);
}
.section-head p{color:var(--muted);margin-top:14px;font-size:1rem;line-height:1.85}

/* observation row */
.observe-block{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.point-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  overflow:hidden;
}
.point-item{
  padding:34px 30px;
  position:relative;
  border-left:1px solid var(--line);
  transition:background .25s;
}
.point-item:first-child{border-left:none}
.point-item:hover{background:rgba(242,241,237,.55)}
.point-item::before{
  content:attr(data-index);
  font-family:var(--serif);
  font-size:2.2rem;
  display:block;
  color:var(--line);
  line-height:1;
  margin-bottom:18px;
  font-weight:700;
  transition:color .3s;
}
.point-item:hover::before{color:var(--accent)}
.point-item h3{font-size:1.2rem;font-weight:600;color:var(--ink);margin-bottom:14px;font-family:var(--serif)}
.point-item p{font-size:.92rem;line-height:1.8;color:var(--muted)}
@media(max-width:1023px){
  .point-item{padding:26px 22px}
}
@media(max-width:800px){
  .point-row{grid-template-columns:1fr}
  .point-item{border-left:none;border-top:1px solid var(--line)}
  .point-item:first-child{border-top:none}
}

/* timeline */
.timeline {
  position:relative;
  padding-left:0;
  display:grid;
  gap:64px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:78px;
  top:0;
  bottom:0;
  width:1px;
  background:var(--line);
}
@media(max-width:768px){
  .timeline::before{left:8px;top:12px;bottom:12px}
}
.timeline-item{
  position:relative;
  display:grid;
  grid-template-columns:220px 1fr;
  gap:32px;
  align-items:start;
}
.timeline-meta{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
}
.case-number{
  color:var(--line);
  font-family:var(--serif);
  font-size:clamp(2.6rem,4vw,3.4rem);
  font-weight:700;
  line-height:1;
  position:relative;
  z-index:2;
  letter-spacing:-.02em;
  transition:color .3s;
}
.timeline-item:hover .case-number{color:var(--accent)}
.timeline-caption{
  font-size:.84rem;
  color:var(--muted);
  letter-spacing:.08em;
  border-left:2px solid var(--line);
  padding-left:12px;
}
.timeline-dot{
  position:absolute;
  left:74px;
  top:30px;
  width:10px;
  height:10px;
  border-radius:50%;
  border:2px solid #fff;
  background:var(--accent);
  box-shadow:0 0 0 1px var(--accent),0 0 0 5px rgba(184,137,75,.14);
  z-index:3;
}
.case-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr 220px;
  min-height:220px;
  transition:border-color .3s,box-shadow .3s,transform .3s;
}
.case-card:hover{
  border-color:rgba(31,110,92,.4);
  box-shadow:var(--shadow-lg);
  transform:translateY(-3px);
}
.case-body{padding:30px 34px;display:flex;flex-direction:column;justify-content:center}
.case-body h3{font-family:var(--serif);font-size:1.4rem;font-weight:600;color:var(--ink);margin-bottom:12px}
.case-body p{font-size:.95rem;color:var(--muted);line-height:1.85}
.case-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.case-tags span{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border:1px solid var(--line);
  border-radius:30px;
  font-size:.75rem;
  background:var(--bg);
  color:var(--body);
  font-weight:500;
}
.case-media{
  position:relative;
  overflow:hidden;
  min-height:220px;
}
.case-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .6s ease}
.case-card:hover .case-media img{transform:scale(1.055)}
.case-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(23,35,31,.42) 0%,rgba(23,35,31,.05) 44%,rgba(242,241,237,.2) 100%);
  pointer-events:none;
}
@media(max-width:1100px){
  .timeline-item{grid-template-columns:190px 1fr}
  .timeline::before{left:70px}
  .timeline-dot{left:66px}
}
@media(max-width:900px){
  .timeline-item{grid-template-columns:1fr;gap:16px}
  .timeline::before{left:7px;bottom:8px}
  .timeline-dot{top:3px;left:3px}
  .timeline-meta{display:block;padding-left:44px}
  .case-number{font-size:2.2rem}
  .timeline-caption{margin-top:2px;border-left:none;padding-left:0}
  .case-card{grid-template-columns:1fr}
  .case-media{min-height:220px;position:relative}
  .case-media img{position:relative}
}
@media(max-width:520px){
  .case-card{grid-template-columns:1fr}
  .case-body{padding:24px 22px}
  .case-media{min-height:220px}
  .case-media img{position:relative}
}

/* highlight quote */
.quote-band{background:var(--dark);color:#fff;padding:var(--gutter) 0}
.quote-layout{
  display:grid;
  grid-template-columns:0.8fr 1.2fr;
  gap:64px;
  align-items:center;
}
.quote-mark{
  font-size:.78rem;
  letter-spacing:.2em;
  color:rgba(255,255,255,.55);
  display:flex;
  align-items:center;
  gap:10px;
}
.quote-mark::after{width:32px;height:1px;background:rgba(184,137,75,.8);content:""}
.quote-layout .quote{margin-top:20px}
.quote-layout .big{
  font-family:var(--serif);
  font-size:clamp(1.45rem,2.2vw,2rem);
  line-height:1.55;
  color:#fff;
  font-weight:600;
}
.quote-layout blockquote{
  margin:22px 0 0;
  font-size:1rem;
  color:rgba(255,255,255,.7);
  border-left:2px solid rgba(184,137,75,.6);
  padding-left:18px;
  line-height:1.9;
}
@media(max-width:800px){
  .quote-layout{grid-template-columns:1fr;gap:28px}
}

/* feedback intro list */
.feedback-block{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feedback-grid{
  display:grid;
  grid-template-columns:1.2fr .9fr;
  gap:56px;
  align-items:start;
}
.feedback-list{
  display:grid;
  gap:0;
  border-top:1px solid var(--line);
}
.feedback-row{
  display:grid;
  grid-template-columns:70px 1fr 44px;
  gap:20px;
  align-items:center;
  padding:26px 8px 26px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .3s,background .3s;
}
.feedback-row:hover{padding-left:14px;background:rgba(242,241,237,.4)}
.fb-index{font-family:var(--serif);font-size:1.35rem;font-weight:600;color:var(--accent)}
.fb-title{font-weight:600;color:var(--ink);font-size:1.06rem}
.fb-title small{display:block;font-weight:400;color:var(--muted);margin-top:4px;font-size:.86rem;line-height:1.7}
.fb-link{font-size:1.3rem;color:var(--line);transition:color .25s,transform .25s;display:flex}
.feedback-row:hover .fb-link{color:var(--brand);transform:translateX(4px)}
.feedback-aside{
  border:1px solid var(--line);
  background:var(--bg);
  border-radius:12px;
  padding:34px;
}
.feedback-aside h3{font-family:var(--serif);font-size:1.4rem;color:var(--ink);margin-bottom:18px}
.feedback-aside p{font-size:.93rem;color:var(--muted);line-height:1.85;margin-bottom:18px}
.feedback-aside .note{border-left:3px solid var(--brand);padding-left:14px;font-size:.85rem;color:var(--muted)}
@media(max-width:900px){
  .feedback-grid{grid-template-columns:1fr}
}

/* FAQ */
.faq-block{padding-top:var(--gutter);padding-bottom:var(--gutter)}
.faq-head{margin-bottom:48px;max-width:640px}
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line)}
.faq-question{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:23px 10px;
  text-align:left;
  font-size:1.02rem;
  font-weight:600;
  color:var(--ink);
  position:relative;
  transition:color .2s,padding-left .3s,background .3s;
}
.faq-question:hover{color:var(--brand);padding-left:12px}
.faq-item.open .faq-question{
  color:var(--brand);
}
.faq-item.open .faq-question::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:2px;
  height:18px;
  background:var(--brand);
}
.faq-num{font-size:.82rem;color:var(--muted);margin-right:12px;display:inline-block;min-width:34px;font-weight:500}
.faq-content{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease,padding .3s;
}
.faq-answer{
  padding:0 36px 20px 42px;
  color:var(--muted);
  font-size:.95rem;
  line-height:1.9;
}
.faq-icon{
  width:30px;height:30px;
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  border-radius:50%;
  background:#fff;
  position:relative;
  transition:transform .3s,border-color .2s,color .2s;
  flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{content:"";width:11px;height:1px;background:currentColor;position:absolute}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--brand);color:var(--brand)}

/* inner CTA */
.page-cta{background:var(--dark);padding:74px 0}
.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  flex-wrap:wrap;
}
.cta-cat-title{
  font-family:var(--serif);
  font-size:clamp(1.9rem,3.5vw,2.8rem);
  color:#fff;
  font-weight:600;
  line-height:1.35;
}
.cta-cat-title span{display:block;font-size:.95rem;font-family:var(--sans);font-weight:400;color:rgba(255,255,255,.6);margin-top:14px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}

/* breadcrumb bottom -- not needed?

/* footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 32px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-mark{background:#fff;color:var(--dark)}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:.9rem;color:rgba(255,255,255,.56);line-height:1.85;max-width:360px}
.footer-col-title{font-size:.82rem;letter-spacing:.15em;color:#fff;font-weight:600;margin-bottom:18px;text-transform:uppercase}
.footer-links{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer-links a{color:rgba(255,255,255,.58);transition:color .2s,padding-left .2s;font-size:.9rem}
.footer-links a:hover{color:#fff;padding-left:6px}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  flex-wrap:wrap;
  font-size:.82rem;
  color:rgba(255,255,255,.38)
}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(max-width:1023px){
  .container{padding-left:32px;padding-right:32px}
  .main-nav{display:none}
  .burger{display:inline-flex}
  .header-actions{margin-left:auto}
  .nav-status{display:none}
  .header-actions .btn-primary{display:none}
}
@media(max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .header-inner{min-height:64px}
  .site-header{min-height:64px}
  .logo-mark{font-size:1.35rem;padding:5px 9px}
  .category-hero{
    padding-top:108px;
    padding-bottom:40px;
  }
  .category-title{font-size:clamp(2.2rem,7vw,3.2rem)}
  .category-lead{font-size:.96rem}
  .section-block{padding-top:3.4rem;padding-bottom:3.4rem}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:34px}
}

/* mobile drawer */
.drawer-nav{
  position:fixed;
  inset:0;
  z-index:150;
  display:none;
}
.drawer-nav.show{display:block}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(23,35,31,.36);
  opacity:0;
  transition:opacity .3s;
}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:min(360px,86vw);
  height:100%;
  background:var(--bg);
  box-shadow:-18px 0 50px rgba(0,0,0,.14);
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.22,1,.36,1);
  padding:22px 20px 34px;
  display:flex;
  flex-direction:column;
}
.drawer-nav.show .drawer-panel{transform:translateX(0)}
.drawer-nav.show .drawer-mask{opacity:1}
.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.drawer-close{
  width:38px;height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:#fff;
  border-radius:6px;
  transition:color .2s,border-color .2s;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer-menu{display:flex;flex-direction:column;gap:2px}
.drawer-menu a{
  display:flex;
  font-size:1.1rem;
  font-weight:500;
  padding:16px 10px;
  color:var(--ink);
  border-bottom:1px solid rgba(227,223,215,.7);
  transition:padding-left .2s,color .2s,background .2s;
}
.drawer-menu a:hover{color:var(--brand);padding-left:18px;background:#fff}
.drawer-menu a.active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto;display:grid;gap:10px}
.drawer-cta .btn{width:100%}
.drawer-status{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:.8rem;
  color:var(--muted);
  margin-bottom:10px;
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{
    opacity:1;
    transform:none;
  }
}