/* roulang page: index */
:root {
  --bg: #F6F3ED;
  --surface: #FFFCF7;
  --line: #E7E0D3;
  --ink: #1B2B27;
  --muted: #596A64;
  --primary: #0B6B58;
  --primary-deep: #064A3D;
  --accent: #F08A35;
  --accent-deep: #D66E1E;
  --accent-soft: #F8E4D1;
  --ok: #2F9E7F;
  --line-on-dark: #24423B;
  --shadow-card: 0 1px 2px rgba(27, 43, 39, 0.04), 0 8px 24px rgba(27, 43, 39, 0.07);
  --shadow-card-hover: 0 2px 6px rgba(27, 43, 39, 0.06), 0 18px 36px rgba(27, 43, 39, 0.12);
  --radius-sm: 6px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --radius-full: 999px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: 0;
  cursor: pointer;
  background: transparent;
  padding: 0;
  color: inherit;
}

ul,
ol,
dl {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
p,
figure {
  margin: 0;
}

section[id],
div[id] {
  scroll-margin-top: 96px;
}

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

.section {
  padding-block: 96px;
}

.section-sm {
  padding-block: 64px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent-deep);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  display: inline-block;
}

.section-title {
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
  margin-top: 20px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 26px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
  outline: none;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(240, 138, 53, 0.22);
}

.btn-primary:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(214, 110, 30, 0.26);
}

.btn-primary:active {
  transform: scale(0.98);
  box-shadow: 0 4px 10px rgba(214, 110, 30, 0.16);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.72);
  border-color: #CBC2B2;
  color: var(--primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(11, 107, 88, 0.05);
}

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

.btn-light {
  background: #FFFCF7;
  color: var(--primary-deep);
}

.btn-light:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
}

.btn-lg {
  padding: 17px 32px;
  font-size: 16px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
}

.chip-green {
  background: rgba(11, 107, 88, 0.08);
  color: var(--primary);
  border-color: rgba(11, 107, 88, 0.12);
}

.chip-orange {
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-color: rgba(240, 138, 53, 0.2);
}

.chip-soft {
  background: #EFEAE0;
  color: var(--muted);
}

.chip-line {
  border-color: var(--line);
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 252, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(231, 224, 211, 0.8);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 252, 247, 0.98);
  box-shadow: 0 6px 18px rgba(27, 43, 39, 0.05);
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(6, 74, 61, 0.18);
  flex: 0 0 auto;
}

.logo-mark svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background-color 0.25s ease, color 0.25s ease, transform 0.2s ease;
}

.nav-link:hover {
  background: rgba(11, 107, 88, 0.06);
  color: var(--ink);
}

.nav-link.active {
  background: var(--accent-soft);
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.nav-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 22px;
  margin-left: 8px;
  box-shadow: 0 5px 14px rgba(240, 138, 53, 0.22);
  transition: background-color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.nav-cta:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 9px 20px rgba(214, 110, 30, 0.24);
}

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

.nav-cta:focus-visible {
  outline: 2px solid var(--primary-deep);
  outline-offset: 3px;
}

.hamburger {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  border: 1px solid var(--line);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.hamburger:hover {
  border-color: rgba(11, 107, 88, 0.3);
  background: rgba(11, 107, 88, 0.04);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.3s ease, opacity 0.25s ease, background-color 0.25s ease;
}

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

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

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

.hamburger.is-open {
  border-color: rgba(11, 107, 88, 0.35);
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 24px 32px rgba(27, 43, 39, 0.08);
}

.mobile-nav.open {
  display: block;
}

.mobile-nav .mobile-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-weight: 500;
  color: var(--muted);
}

.mobile-nav .mobile-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
  border-radius: 10px;
}

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

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 112px 0 96px;
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(246, 243, 237, 0.98) 0%, rgba(246, 243, 237, 0.92) 42%, rgba(246, 243, 237, 0.58) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg), transparent);
  z-index: 0;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 52px;
  align-items: center;
}

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

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(11, 107, 88, 0.09);
  color: var(--primary-deep);
  border: 1px solid rgba(11, 107, 88, 0.11);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.hero-kicker .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.hero-title {
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-top: 28px;
  color: var(--ink);
}

.hero-title-sub {
  display: block;
  color: var(--primary);
  font-size: 0.72em;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-top: 6px;
}

.hero-lead {
  margin-top: 28px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 38px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin-top: 42px;
}

.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
}

.hero-trust svg {
  width: 17px;
  height: 17px;
  color: var(--ok);
  stroke-width: 2;
}

.hero-media {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-media-inner {
  width: 86%;
  margin-left: auto;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 34px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(27, 43, 39, 0.18), 0 6px 18px rgba(27, 43, 39, 0.08);
  transform: rotate(1.2deg);
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  max-height: 490px;
  object-fit: cover;
}

.hero-scroll {
  display: none;
  position: absolute;
  bottom: -44px;
  left: 24px;
  z-index: 2;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
  align-items: center;
  gap: 10px;
}

@media (max-width: 768px) {
  .hero {
    padding: 72px 0 76px;
  }

  .hero-scroll {
    display: flex;
  }
}

.fact-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 252, 247, 0.7);
}

.fact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.fact-icon {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 107, 88, 0.1);
  color: var(--primary);
}

.fact-title {
  font-weight: 700;
  color: var(--ink);
  font-size: 15px;
}

.fact-text {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
  margin-top: 3px;
}

.play-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
}

.play-sticky {
  position: sticky;
  top: 112px;
}

.play-note {
  border-left: 3px solid var(--primary);
  background: rgba(11, 107, 88, 0.06);
  border-radius: 6px 14px 14px 6px;
  padding: 16px 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 34px;
}

.play-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.play-item {
  display: grid;
  grid-template-columns: 54px 1fr 36px;
  gap: 18px;
  align-items: start;
  padding: 28px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.25s ease;
}

.play-item:hover {
  background: rgba(255, 252, 247, 0.64);
}

.play-index {
  font-size: 26px;
  line-height: 1;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--primary);
  letter-spacing: 0.02em;
  padding-top: 4px;
}

.play-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.play-item p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 460px;
}

.play-arrow {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  transition: background-color 0.25s ease, color 0.25s ease, transform 0.2s ease, border-color 0.25s ease;
}

.play-item:hover .play-arrow {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateX(4px);
}

.reward-feature-img {
  height: 240px;
  width: 100%;
  object-fit: cover;
}

.reward-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.reward-row:last-child {
  border-bottom: 0;
}

.reward-row-main {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.reward-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(11, 107, 88, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 38px;
}

.reward-state {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
}

.reward-state.done {
  color: var(--ok);
}

.reward-state.lock {
  color: #A9B0AC;
}

.task-panel {
  margin-top: 42px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

.progress-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding-top: 12px;
}

.progress-steps::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--line);
  z-index: 0;
}

.step-item {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-dot {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid #D6D3C9;
  color: #fff;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  box-shadow: 0 0 0 4px var(--bg);
  font-weight: 700;
  transition: all 0.3s ease;
}

.step-item.done .step-dot {
  background: var(--ok);
  border-color: var(--ok);
}

.step-item.current .step-dot {
  background: var(--accent);
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 5px rgba(240, 138, 53, 0.18);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% {
    box-shadow: 0 0 0 0 rgba(240, 138, 53, 0.45), 0 0 0 5px rgba(240, 138, 53, 0.16);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(240, 138, 53, 0), 0 0 0 5px rgba(240, 138, 53, 0.1);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(240, 138, 53, 0), 0 0 0 5px rgba(240, 138, 53, 0.08);
  }
}

.step-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.step-item p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.task-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.task-list-item:last-child {
  border-bottom: 0;
}

.task-status-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex: 0 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.task-status-icon.success {
  background: rgba(47, 158, 127, 0.15);
  color: var(--ok);
}

.task-status-icon.progress {
  background: rgba(240, 138, 53, 0.15);
  color: var(--accent-deep);
}

.task-status-icon.wait {
  background: #ECE9E2;
  color: #A5ACA8;
}

.task-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.task-link:hover {
  color: var(--accent-deep);
}

.task-link.wait {
  color: #AAB1AD;
  pointer-events: none;
}

.cta-section {
  position: relative;
  isolation: isolate;
  background-color: #0B6B58;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(112deg, rgba(6, 74, 61, 0.95), rgba(11, 107, 88, 0.82));
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 2;
  padding-block: 88px;
}

.cta-inner .section-eyebrow {
  color: #F8E4D1;
}

.cta-inner .section-eyebrow::before {
  background: #F8E4D1;
}

.cta-title {
  font-size: clamp(27px, 3vw, 38px);
  color: #FBF5EA;
  font-weight: 800;
  line-height: 1.35;
}

.cta-description {
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  max-width: 640px;
  margin: 20px auto 0;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 34px;
}

.version-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 34px;
}

.version-badge {
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.version-badge .vdot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #F2A865;
}

.news-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  margin-top: 44px;
}

.news-feature {
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  background: var(--surface);
}

.news-feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(11, 107, 88, 0.28);
}

.news-feature img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.news-feature-body {
  padding: 28px;
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
}

.news-row-list {
  display: flex;
  flex-direction: column;
}

.news-row-item {
  padding: 20px 6px;
  border-bottom: 1px solid var(--line);
  display: block;
  transition: background-color 0.25s ease, padding-left 0.25s ease;
}

.news-row-item:first-child {
  padding-top: 6px;
}

.news-row-item:hover {
  background: rgba(255, 252, 247, 0.75);
  padding-left: 12px;
}

.news-row-item .news-row-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.55;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.news-row-item .news-row-title::before {
  content: "";
  background: var(--primary);
  width: 9px;
  height: 9px;
  border-radius: 3px;
  flex: 0 0 9px;
  margin-top: 8px;
}

.news-row-item:hover .news-row-title {
  color: var(--primary);
}

.news-row-summary {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: gap 0.25s ease, color 0.25s ease;
}

.read-more:hover {
  gap: 10px;
  color: var(--accent-deep);
}

.empty-tip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
  background: #FBF3E1;
  border: 1px solid #E8D9B5;
  border-radius: 18px;
  padding: 22px 28px;
  color: #8A6D32;
  font-size: 15px;
}

.empty-tip svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.35fr;
  gap: 64px;
  align-items: start;
}

.faq-nav-group {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 15px 18px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.2s ease;
}

.faq-nav-link:hover {
  border-color: rgba(11, 107, 88, 0.3);
  background: rgba(11, 107, 88, 0.04);
  transform: translateX(3px);
}

.faq-nav-link span {
  color: var(--accent-deep);
  font-weight: 800;
  font-size: 17px;
}

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

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

.faq-list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 10px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.5;
  transition: color 0.25s ease;
}

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

.faq-list summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 36px;
  transition: transform 0.3s ease, background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.faq-list details[open] summary {
  color: var(--primary);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
  background: var(--accent-soft);
  border-color: rgba(240, 138, 53, 0.3);
  color: var(--accent-deep);
}

.faq-answer {
  padding: 0 40px 26px 16px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.faq-answer a {
  color: var(--primary);
  border-bottom: 1px solid rgba(11, 107, 88, 0.25);
}

.faq-answer a:hover {
  color: var(--accent-deep);
  border-color: rgba(214, 110, 30, 0.3);
}

.faq-notes {
  margin-top: 22px;
  padding: 20px 22px;
  border-radius: 18px;
  background: rgba(11, 107, 88, 0.07);
  border: 1px solid rgba(11, 107, 88, 0.1);
  color: var(--muted);
  font-size: 14.5px;
}

.faq-notes strong {
  color: var(--primary);
}

.help-strip {
  background: linear-gradient(118deg, #F8E4D1, #F5D7B0);
  border-radius: 26px;
  border: 1px solid rgba(240, 138, 53, 0.2);
  padding: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.help-strip-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

.help-strip-text {
  color: #70451F;
  margin-top: 6px;
  font-size: 14.5px;
}

.site-footer {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.7fr 0.9fr 0.9fr;
  gap: 52px;
  padding: 72px 0 56px;
}

.footer-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.footer-brand-logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  box-shadow: none;
}

.footer-brand-logo span {
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.68);
  max-width: 360px;
}

.footer-legal {
  margin-top: 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  border-left: 2px solid rgba(240, 138, 53, 0.8);
  padding-left: 12px;
}

.footer-title {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

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

.footer-nav a,
.footer-nav span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  transition: color 0.25s ease;
}

.footer-nav a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-nav .not-link {
  opacity: 0.74;
  cursor: default;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.56);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.66);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 1024px) {
  .hamburger {
    display: inline-flex;
  }

  .desktop-nav {
    display: none !important;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-media-inner {
    width: 100%;
    margin-left: 0;
    transform: none;
    max-width: 520px;
  }

  .play-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .play-sticky {
    position: static;
  }

  .task-panel {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 42px;
  }
}

@media (max-width: 768px) {
  .section {
    padding-block: 68px;
  }

  .section-sm {
    padding-block: 48px;
  }

  .container-site {
    padding-inline: 18px;
  }

  .help-strip {
    padding: 28px 22px;
    flex-direction: column;
    align-items: flex-start;
    border-radius: 22px;
  }

  .hero-title {
    font-size: clamp(29px, 8vw, 37px);
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-media img {
    min-height: 280px;
  }

  .nav-cta {
    margin-left: 0;
  }

  .mobile-nav .mobile-cta {
    margin-top: 16px;
    display: flex;
  }

  .play-item {
    grid-template-columns: 46px 1fr 28px;
    gap: 12px;
    padding: 22px 0;
  }

  .play-index {
    font-size: 22px;
    -webkit-text-stroke-width: 1px;
  }

  .play-arrow {
    width: 28px;
    height: 28px;
  }

  .reward-row {
    flex-wrap: wrap;
  }

  .reward-state {
    margin-left: 50px;
  }

  .progress-steps {
    overflow-x: auto;
    padding-bottom: 10px;
    gap: 6px;
  }

  .step-item h4 {
    font-size: 12.5px;
  }

  .step-item p {
    font-size: 11px;
  }

  .news-feature img {
    height: 200px;
  }

  .news-feature-body {
    padding: 22px;
  }

  .faq-list summary {
    font-size: 15.5px;
    padding: 20px 0;
  }

  .faq-answer {
    padding: 0 20px 22px 0;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 52px 0 40px;
  }

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

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

  .help-strip .btn {
    width: 100%;
  }

  .section-title {
    font-size: 25px;
  }
}

/* roulang page: article */
:root {
    --bg: #F6F3ED;
    --surface: #FFFCF7;
    --line: #E7E0D3;
    --ink: #1B2B27;
    --muted: #596A64;
    --primary: #0B6B58;
    --primary-deep: #064A3D;
    --accent: #F08A35;
    --accent-deep: #D66E1E;
    --accent-soft: #F8E4D1;
    --ok: #2F9E7F;
    --line-on-dark: #24423B;
    --radius-sm: 6px;
    --radius-card: 16px;
    --radius-panel: 20px;
    --shadow-card: 0 1px 2px rgba(27,43,39,.04), 0 8px 24px rgba(27,43,39,.07);
    --shadow-hover: 0 2px 4px rgba(27,43,39,.06), 0 16px 36px rgba(27,43,39,.12);
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  img {
    display: block;
    max-width: 100%;
  }
  button,
  input {
    font: inherit;
  }

  .container-site {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
  }
  .section-space {
    padding-block: 96px;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(246, 243, 237, .88);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(231, 224, 211, .8);
  }

  .logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 13px;
    background: var(--primary);
    box-shadow: 0 4px 14px rgba(11, 107, 88, .22);
    flex: none;
  }
  .logo-mark svg {
    width: 26px;
    height: 26px;
    stroke: #fff;
    stroke-width: 1.7;
    fill: none;
  }

  .desktop-nav .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    position: relative;
    padding: 9px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .02em;
    color: var(--ink);
    transition: background-color .22s ease, color .22s ease, opacity .22s ease;
  }
  .desktop-nav .nav-link:hover {
    color: var(--primary);
    background: rgba(11, 107, 88, .07);
  }
  .desktop-nav .nav-link.active {
    background: var(--accent-soft);
    color: var(--primary);
    font-weight: 600;
  }
  .desktop-nav .nav-link.active::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }
  .desktop-nav .nav-link:focus-visible,
  .nav-cta:focus-visible,
  .hamburger:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-left: 8px;
    padding: 9px 20px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(240, 138, 53, .28);
    transition: background-color .22s ease, transform .18s ease, box-shadow .22s ease;
  }
  .nav-cta:hover {
    background: var(--accent-deep);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(214, 110, 30, .32);
  }
  .nav-cta:active {
    transform: scale(.98);
  }
  .nav-cta::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, .24);
  }

  .hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 12px;
    cursor: pointer;
  }
  .hamburger span {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: var(--ink);
    transition: transform .24s ease, opacity .24s ease;
  }
  .hamburger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  .hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .mobile-nav {
    display: none;
    background: var(--bg);
    border-top: 1px solid var(--line);
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }
  .mobile-nav.open {
    display: block;
  }
  .mobile-link {
    padding: 14px 4px;
    font-size: 15px;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    transition: color .2s ease;
  }
  .mobile-link:hover {
    color: var(--primary);
  }
  .mobile-link.active {
    color: var(--primary);
    font-weight: 700;
  }
  .mobile-cta {
    margin-top: 16px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color .24s ease, border-color .24s ease, color .24s ease, transform .18s ease, box-shadow .24s ease;
  }
  .btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  .btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 22px rgba(240, 138, 53, .3);
  }
  .btn-primary:hover {
    background: var(--accent-deep);
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(214, 110, 30, .32);
  }
  .btn-primary:active {
    transform: scale(.98);
    box-shadow: 0 4px 12px rgba(214, 110, 30, .3);
  }
  .btn-outline-light {
    background: rgba(255, 255, 255, .08);
    border-color: rgba(255, 255, 255, .72);
    color: #fff;
  }
  .btn-outline-light:hover {
    background: rgba(255, 255, 255, .16);
    border-color: #fff;
  }
  .btn-ghost-dark {
    border-color: rgba(11, 107, 88, .4);
    color: var(--primary);
    background: transparent;
  }
  .btn-ghost-dark:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(11, 107, 88, .06);
  }

  .article-hero {
    position: relative;
    background-color: var(--primary-deep);
    background-image: linear-gradient(100deg, rgba(6, 74, 61, .94), rgba(6, 74, 61, .72)), url('/assets/images/backpic/back-2.png');
    background-repeat: no-repeat;
    background-position: right center;
    background-size: cover;
    color: #fff;
    overflow: hidden;
  }
  .article-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 85% 20%, rgba(240, 138, 53, .22), transparent 42%);
    pointer-events: none;
  }
  .article-hero .container-site {
    position: relative;
    z-index: 1;
  }

  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .72);
  }
  .breadcrumb a {
    color: rgba(255, 255, 255, .86);
    transition: color .2s ease;
  }
  .breadcrumb a:hover {
    color: #fff;
  }
  .breadcrumb .sep {
    opacity: .5;
  }
  .breadcrumb .current {
    color: #fff;
    font-weight: 500;
  }

  .hero-category-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .24);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
  }
  .hero-category-pill::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }

  .article-title {
    font-size: 42px;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -.01em;
    color: #fff;
    margin: 18px 0 0;
    text-wrap: balance;
  }
  .article-meta-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
    margin-top: 18px;
    font-size: 13px;
    color: rgba(255, 255, 255, .76);
  }
  .article-meta-list span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
  }
  .article-meta-list .dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .42);
  }

  .article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 312px;
    gap: 48px;
    align-items: start;
    padding-block: 56px 72px;
  }

  .article-main {
    min-width: 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    box-shadow: var(--shadow-card);
    padding: 40px 46px;
  }

  .article-featured-img {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--line);
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
  }
  .article-featured-img img {
    width: 100%;
    height: 420px;
    object-fit: cover;
  }

  .article-prose {
    font-size: 16px;
    line-height: 1.9;
    color: var(--ink);
  }
  .article-prose > p:first-of-type {
    font-size: 18px;
  }
  .article-prose p {
    margin: 0 0 1.25em;
  }
  .article-prose h2 {
    margin: 2em 0 .7em;
    font-size: 26px;
    line-height: 1.45;
    font-weight: 750;
    scroll-margin-top: 100px;
    letter-spacing: -.01em;
  }
  .article-prose h3 {
    margin: 1.6em 0 .6em;
    font-size: 21px;
    font-weight: 700;
    line-height: 1.5;
  }
  .article-prose h4 {
    margin: 1.4em 0 .5em;
    font-size: 18px;
    font-weight: 700;
  }
  .article-prose ul,
  .article-prose ol {
    margin: 1em 0 1.4em;
    padding-left: 1.4em;
  }
  .article-prose li {
    margin-bottom: .55em;
  }
  .article-prose ul li::marker {
    color: var(--primary);
  }
  .article-prose ol li::marker {
    color: var(--accent-deep);
    font-weight: 600;
  }
  .article-prose a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(11, 107, 88, .35);
    transition: text-decoration-color .2s ease, color .2s ease;
  }
  .article-prose a:hover {
    color: var(--accent-deep);
    text-decoration-color: rgba(214, 110, 30, .5);
  }
  .article-prose blockquote {
    margin: 1.6em 0;
    padding: 14px 22px;
    border-left: 4px solid var(--primary);
    background: rgba(11, 107, 88, .05);
    color: var(--muted);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }
  .article-prose figure {
    margin: 1.8em 0;
    border-radius: 14px;
    overflow: hidden;
    background: var(--bg);
    padding: 8px;
  }
  .article-prose figcaption {
    padding: 10px 4px 4px;
    font-size: 13px;
    color: var(--muted);
    text-align: center;
  }
  .article-prose img {
    border-radius: 10px;
    width: 100%;
    height: auto;
  }
  .article-prose table {
    width: 100%;
    font-size: 14px;
    border-collapse: collapse;
    margin: 1.4em 0;
  }
  .article-prose th {
    background: rgba(11, 107, 88, .09);
    color: var(--primary-deep);
    font-weight: 700;
  }
  .article-prose th,
  .article-prose td {
    padding: 12px 14px;
    border: 1px solid var(--line);
    text-align: left;
  }

  .article-tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }
  .article-tag-chip {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: #965624;
    font-size: 13px;
    font-weight: 500;
    transition: background-color .2s ease, color .2s ease;
  }
  .article-tag-chip:hover {
    background: rgba(240, 138, 53, .2);
    color: var(--accent-deep);
  }

  .article-aside {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .side-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 22px;
  }
  .side-card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-deep);
    letter-spacing: .02em;
  }
  .side-card-title::before {
    content: "";
    width: 4px;
    height: 16px;
    background: var(--accent);
    border-radius: 4px;
  }

  .article-toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--line);
  }
  .article-toc-list li {
    margin: 0;
    padding: 10px 0 10px 16px;
    position: relative;
    font-size: 14px;
    line-height: 1.6;
  }
  .article-toc-list li::before {
    content: "";
    position: absolute;
    left: -3px;
    top: 17px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #ccc8bd;
    transition: background .2s ease, transform .2s ease;
  }
  .article-toc-list a {
    color: var(--muted);
    transition: color .2s ease;
  }
  .article-toc-list a:hover {
    color: var(--primary);
  }
  .article-toc-list li:has(a.active-link)::before {
    background: var(--accent);
    transform: scale(1.3);
  }

  .side-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .side-nav-list li + li {
    margin-top: 6px;
  }
  .side-nav-list a {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    padding: 11px 4px;
    border-bottom: 1px dashed var(--line);
    font-size: 14px;
    color: var(--muted);
    transition: color .2s ease, padding-left .2s ease;
  }
  .side-nav-list a:hover {
    color: var(--primary);
    padding-left: 8px;
  }
  .side-nav-list .side-arrow {
    color: var(--accent);
    font-size: 12px;
  }

  .extend-card {
    background: var(--primary);
    border-radius: 18px;
    padding: 22px;
    color: #fff;
    overflow: hidden;
    position: relative;
  }
  .extend-card::after {
    content: "";
    position: absolute;
    right: -32px;
    top: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(240, 138, 53, .28);
  }
  .extend-card h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
    position: relative;
    z-index: 1;
  }
  .extend-card p {
    margin: 0 0 18px;
    color: rgba(255, 255, 255, .78);
    font-size: 13px;
    position: relative;
    z-index: 1;
    line-height: 1.7;
  }

  .article-cta-band {
    background-image: linear-gradient(105deg, rgba(6, 74, 61, .98), rgba(11, 107, 88, .9)), url('/assets/images/backpic/back-1.png');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    border-radius: 24px;
    padding: 48px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
  }
  .article-cta-band::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 82% 30%, rgba(240, 138, 53, .2), transparent 46%);
    pointer-events: none;
  }
  .article-cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
  }
  .article-cta-copy {
    max-width: 600px;
  }
  .article-cta-copy h2 {
    margin: 0 0 8px;
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1.4;
  }
  .article-cta-copy p {
    margin: 0;
    color: rgba(255, 255, 255, .76);
    font-size: 14px;
  }
  .article-cta-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
  }
  .version-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .2);
    color: #fff;
    font-size: 12px;
  }
  .version-badge:last-child {
    margin-left: 4px;
  }

  .related-title-block {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
  }
  .section-eyebrow {
    display: block;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    margin-bottom: 8px;
  }
  .section-h2 {
    margin: 0;
    font-size: 30px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: -.01em;
  }

  .related-row-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--line);
  }
  .related-row {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 20px;
    padding: 18px 4px;
    border-bottom: 1px solid var(--line);
    transition: background-color .2s ease;
  }
  .related-row:hover {
    background: rgba(255, 252, 247, .7);
  }
  .related-row .row-img {
    overflow: hidden;
    border-radius: 14px;
    background: var(--line);
  }
  .related-row .row-img img {
    width: 100%;
    height: 112px;
    object-fit: cover;
    transition: transform .35s ease;
  }
  .related-row:hover .row-img img {
    transform: scale(1.04);
  }
  .related-row-cat {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-deep);
    background: var(--accent-soft);
    padding: 4px 10px;
    border-radius: 999px;
    display: inline-flex;
    align-self: flex-start;
  }
  .related-row h3 {
    margin: 10px 0 6px;
    font-size: 17px;
    line-height: 1.6;
    font-weight: 700;
  }
  .related-row p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
  }

  .empty-state-box {
    max-width: 720px;
    margin: 48px auto 0;
    padding: 44px;
    border: 1px dashed #d9cfbd;
    border-radius: 24px;
    background: rgba(255, 252, 247, .55);
    text-align: center;
  }
  .empty-state-box .empty-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 18px;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-deep);
    font-size: 26px;
    font-weight: 800;
  }
  .empty-state-box h2 {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 800;
  }
  .empty-state-box p {
    margin: 0 0 22px;
    color: var(--muted);
  }

  .site-footer {
    background: var(--primary-deep);
    color: rgba(255, 255, 255, .8);
    margin-top: 0;
    font-size: 14px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding: 64px 0 40px;
  }
  .footer-brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 20px;
    font-weight: 800;
  }
  .footer-brand-logo .logo-mark {
    background: rgba(255, 255, 255, .14);
    box-shadow: none;
  }
  .footer-brand-desc {
    color: rgba(255, 255, 255, .72);
    font-size: 13px;
    line-height: 1.85;
    max-width: 360px;
    margin: 16px 0 12px;
  }
  .footer-legal {
    color: rgba(255, 255, 255, .42);
    font-size: 12px;
  }
  .footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 18px;
    letter-spacing: .04em;
  }
  .footer-nav {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .footer-nav li {
    margin-bottom: 12px;
  }
  .footer-nav a {
    color: rgba(255, 255, 255, .72);
    font-size: 14px;
    position: relative;
    transition: color .2s ease;
  }
  .footer-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width .25s ease;
  }
  .footer-nav a:hover {
    color: var(--accent);
  }
  .footer-nav a:hover::after {
    width: 100%;
  }
  .footer-nav .not-link {
    color: rgba(255, 255, 255, .55);
  }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 20px;
    padding: 24px 0 26px;
    border-top: 1px solid var(--line-on-dark);
    color: rgba(255, 255, 255, .6);
    font-size: 13px;
  }
  .footer-bottom a {
    color: rgba(255, 255, 255, .74);
    border-bottom: 1px solid rgba(255, 255, 255, .3);
    transition: color .2s ease, border-color .2s ease;
  }
  .footer-bottom a:hover {
    color: var(--accent);
    border-color: var(--accent);
  }

  .back-top {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-size: 13px;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    transition: color .2s ease, border-color .2s ease;
  }
  .back-top:hover {
    color: var(--primary);
    border-color: var(--primary);
  }

  @media (max-width: 1100px) {
    .article-layout {
      grid-template-columns: minmax(0, 1fr) 280px;
      gap: 32px;
    }
    .article-main {
      padding: 32px 30px;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 900px) {
    .desktop-nav {
      display: none !important;
    }
    .hamburger {
      display: flex;
    }
    .article-layout {
      grid-template-columns: 1fr;
      padding-block: 36px 56px;
    }
    .article-aside {
      position: static;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .article-aside .extend-card {
      grid-column: span 2;
    }
  }

  @media (max-width: 640px) {
    .container-site {
      padding-inline: 18px;
    }
    .section-space {
      padding-block: 64px;
    }
    .article-title {
      font-size: 28px;
    }
    .article-main {
      padding: 24px 18px;
    }
    .article-featured-img img {
      height: 210px;
    }
    .article-aside {
      grid-template-columns: 1fr;
    }
    .article-aside .extend-card {
      grid-column: auto;
    }
    .article-cta-band {
      padding: 28px 22px;
      border-radius: 18px;
    }
    .article-cta-copy h2 {
      font-size: 22px;
    }
    .related-row {
      grid-template-columns: 1fr;
      gap: 12px;
    }
    .related-row .row-img img {
      height: 160px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 48px 0 32px;
    }
    .site-header .container-site {
      padding-inline: 16px;
    }
    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 12px;
    }
    .footer-bottom {
      flex-direction: column;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      animation: none !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: category1 */
:root {
            --bg: #F6F3ED;
            --surface: #FFFCF7;
            --line: #E7E0D3;
            --ink: #1B2B27;
            --muted: #596A64;
            --primary: #0B6B58;
            --primary-deep: #064A3D;
            --accent: #F08A35;
            --accent-deep: #D66E1E;
            --accent-soft: #F8E4D1;
            --ok: #2F9E7F;
            --line-on-dark: #24423B;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-site {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 252, 247, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 14px rgba(11, 107, 88, .22);
            flex: 0 0 auto;
        }
        .logo-mark svg {
            width: 22px;
            height: 22px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            transition: background .2s, color .2s, box-shadow .2s;
        }
        .nav-link:hover {
            background: var(--accent-soft);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--accent-soft);
            color: var(--primary);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(240, 138, 53, .22);
        }
        .nav-link.active::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }
        .nav-link:focus-visible,
        .mobile-link:focus-visible,
        .btn:focus-visible,
        .hamburger:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-left: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 8px 20px rgba(240, 138, 53, .28);
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .nav-cta:hover {
            background: var(--accent-deep);
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(214, 110, 30, .28);
        }
        .hamburger {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border: 0;
            background: transparent;
            border-radius: 10px;
            padding: 10px;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform .2s, opacity .2s;
        }
        .mobile-nav {
            display: none;
            border-top: 1px solid var(--line);
            background: var(--surface);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-link {
            display: block;
            padding: 13px 4px;
            border-bottom: 1px solid rgba(231, 224, 211, .7);
            font-size: 16px;
            font-weight: 500;
            color: var(--ink);
            border-radius: 8px;
            transition: background .2s, color .2s;
        }
        .mobile-link:hover {
            background: var(--accent-soft);
            color: var(--primary);
        }
        .mobile-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .mobile-cta {
            margin-top: 16px;
        }
        .section {
            padding: 96px 0;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            letter-spacing: .16em;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
        }
        .eyebrow::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .hero-panel {
            position: relative;
            overflow: hidden;
            padding: 88px 0 92px;
            background: var(--surface);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(246, 243, 237, .97) 0%, rgba(255, 252, 247, .93) 56%, rgba(255, 252, 247, .5) 100%);
        }
        .hero-copy,
        .hero-figure {
            position: relative;
            z-index: 2;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            border: 0;
            cursor: pointer;
            border-radius: 999px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: background .2s, border-color .2s, color .2s, transform .2s, box-shadow .2s;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 10px 24px rgba(240, 138, 53, .26);
        }
        .btn-primary:hover {
            background: var(--accent-deep);
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(214, 110, 30, .28);
        }
        .btn-secondary {
            background: var(--surface);
            color: var(--primary);
            border: 1px solid var(--line);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(27, 43, 39, .06);
        }
        .btn-darkline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, .42);
            color: #fff;
            border-radius: 999px;
            padding: 11px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: background .2s, border-color .2s, transform .2s;
        }
        .btn-darkline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .1);
            transform: translateY(-1px);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 13px;
            border-radius: 999px;
            background: var(--accent-soft);
            color: var(--accent-deep);
            font-size: 13px;
            font-weight: 600;
        }
        .chip-green {
            background: rgba(47, 158, 127, .12);
            color: var(--ok);
        }
        .feat-card,
        .guide-card,
        .entry-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 26px;
            box-shadow: 0 1px 2px rgba(27, 43, 39, .04), 0 8px 24px rgba(27, 43, 39, .07);
            transition: border-color .2s, box-shadow .2s, transform .2s;
        }
        .feat-card:hover,
        .guide-card:hover,
        .entry-card:hover {
            border-color: rgba(11, 107, 88, .35);
            box-shadow: 0 2px 4px rgba(27, 43, 39, .05), 0 14px 34px rgba(27, 43, 39, .11);
            transform: translateY(-3px);
        }
        .icon-box {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 18px rgba(11, 107, 88, .18);
        }
        .icon-box.light {
            background: var(--accent-soft);
            color: var(--accent-deep);
        }
        .vertical-steps {
            position: relative;
        }
        .vertical-steps .step-item {
            position: relative;
            padding: 0 0 38px 76px;
        }
        .vertical-steps .step-item:last-child {
            padding-bottom: 0;
        }
        .vertical-steps .step-line {
            position: absolute;
            left: 27px;
            top: 58px;
            bottom: 4px;
            width: 1px;
            background: repeating-linear-gradient(to bottom, var(--line) 0 6px, transparent 6px 12px);
        }
        .vertical-steps .step-item:last-child .step-line {
            display: none;
        }
        .step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--surface);
            border: 1px solid var(--line);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(11, 107, 88, .08);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .step-item p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            max-width: 580px;
        }
        .task-list .task-row {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
        }
        .task-list .task-row:last-child {
            border-bottom: none;
        }
        .task-index {
            flex: 0 0 auto;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-deep);
            background: var(--accent-soft);
            border-radius: 8px;
            padding: 3px 8px;
            line-height: 1.4;
            letter-spacing: .02em;
        }
        .task-list h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 4px;
        }
        .task-list p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
        }
        .faq-area {
            display: grid;
            grid-template-columns: 0.85fr 1.5fr;
            gap: 44px;
            align-items: start;
        }
        .faq-nav {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            border-radius: 10px;
            color: var(--muted);
            font-size: 15px;
            transition: background .2s, color .2s;
        }
        .faq-nav a:hover {
            background: var(--accent-soft);
            color: var(--primary);
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            margin-bottom: 12px;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item.open {
            border-color: rgba(11, 107, 88, .25);
            box-shadow: 0 8px 22px rgba(27, 43, 39, .06);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 19px 22px;
            background: transparent;
            border: 0;
            color: var(--ink);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
        }
        .faq-icon {
            flex: 0 0 auto;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            color: var(--primary);
            transition: transform .24s, background .24s, border-color .24s, color .24s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .32s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 420px;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .download-strip {
            position: relative;
            overflow: hidden;
            border-radius: 20px;
            background: linear-gradient(110deg, var(--primary) 0%, var(--primary-deep) 100%);
            color: #fff;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            box-shadow: 0 20px 44px rgba(6, 74, 61, .18);
        }
        .download-strip::after {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            right: -70px;
            bottom: -110px;
            background: rgba(255, 255, 255, .08);
        }
        .download-strip h2 {
            font-size: 26px;
            margin: 0 0 10px;
            line-height: 1.35;
        }
        .download-strip p {
            margin: 0;
            color: rgba(255, 255, 255, .82);
            max-width: 560px;
            font-size: 15px;
            line-height: 1.8;
        }
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, .75);
            padding-top: 64px;
            padding-bottom: 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
            gap: 42px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--line-on-dark);
        }
        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: .01em;
            margin-bottom: 16px;
        }
        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .68);
            margin: 0 0 14px;
        }
        .footer-legal {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .5);
            margin: 0;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 16px;
            letter-spacing: .02em;
        }
        .footer-nav li {
            margin-bottom: 10px;
        }
        .footer-nav a {
            color: rgba(255, 255, 255, .75);
            font-size: 14px;
            transition: color .2s, text-decoration-color .2s;
            text-decoration: underline transparent;
            text-underline-offset: 4px;
        }
        .footer-nav a:hover {
            color: var(--accent);
            text-decoration-color: var(--accent);
        }
        .footer-nav .not-link {
            color: rgba(255, 255, 255, .52);
            font-size: 14px;
            display: inline-block;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, .58);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .78);
            transition: color .2s;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .faq-area {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .faq-nav {
                flex-direction: row;
                flex-wrap: wrap;
            }
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-panel {
                padding: 60px 0 66px;
            }
            .section {
                padding: 72px 0;
            }
            .download-strip {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px;
            }
        }
        @media (max-width: 640px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .download-strip {
                padding: 26px 22px;
            }
            .vertical-steps .step-item {
                padding-left: 60px;
            }
            .step-num {
                width: 44px;
                height: 44px;
                font-size: 17px;
            }
            .vertical-steps .step-line {
                left: 22px;
                top: 48px;
            }
        }

/* roulang page: category3 */
:root {
      --bg: #F6F3ED;
      --surface: #FFFCF7;
      --line: #E7E0D3;
      --ink: #1B2B27;
      --muted: #596A64;
      --primary: #0B6B58;
      --primary-deep: #064A3D;
      --accent: #F08A35;
      --accent-deep: #D66E1E;
      --accent-soft: #F8E4D1;
      --ok: #2F9E7F;
      --line-on-dark: #24423B;
      --radius-sm: 6px;
      --radius-card: 16px;
      --radius-panel: 20px;
      --shadow-card: 0 1px 2px rgba(27, 43, 39, .04), 0 8px 24px rgba(27, 43, 39, .07);
      --shadow-hover: 0 2px 4px rgba(27, 43, 39, .06), 0 16px 36px rgba(27, 43, 39, .12);
      --font-ui: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: var(--font-ui);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    body.no-scroll {
      overflow: hidden;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: 0;
    }

    .container-site {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* ================= header ================= */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 60;
      background: rgba(255, 252, 247, .88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 11px;
      background: var(--primary);
      color: #fff;
      flex: none;
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .04), 0 6px 14px rgba(11, 107, 88, .22);
    }

    .logo-mark svg {
      width: 22px;
      height: 22px;
      fill: none;
      stroke: #fff;
      stroke-width: 1.8;
    }

    .desktop-nav .nav-link,
    .desktop-nav .nav-cta {
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      letter-spacing: .01em;
      border-radius: 999px;
      padding: 9px 16px;
      transition: background .22s, color .22s, transform .16s, box-shadow .22s;
      color: var(--ink);
    }

    .desktop-nav .nav-link {
      position: relative;
    }

    .desktop-nav .nav-link:hover {
      background: rgba(11, 107, 88, .08);
      color: var(--primary-deep);
    }

    .desktop-nav .nav-link.active {
      background: var(--accent-soft);
      color: var(--primary);
      font-weight: 600;
    }

    .desktop-nav .nav-link.active::before {
      content: "";
      position: absolute;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 3px rgba(240, 138, 53, .2);
    }

    .desktop-nav .nav-link.active:hover {
      background: var(--accent-soft);
      color: var(--primary-deep);
    }

    .desktop-nav .nav-cta {
      background: var(--accent);
      color: #fff !important;
      font-weight: 700;
      padding-left: 20px;
      padding-right: 20px;
      border: none;
      box-shadow: 0 4px 14px rgba(240, 138, 53, .26);
    }

    .desktop-nav .nav-cta:hover {
      background: var(--accent-deep);
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(240, 138, 53, .24);
    }

    .desktop-nav .nav-cta:active {
      transform: scale(.98);
    }

    .desktop-nav a:focus-visible,
    .mobile-link:focus-visible,
    .hamburger:focus-visible,
    .footer-nav a:focus-visible,
    .btn:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
      border-radius: 8px;
    }

    /* mobile */
    .hamburger {
      display: none;
      width: 40px;
      height: 40px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border-radius: 10px;
      padding: 0 8px;
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .25s, opacity .2s;
    }

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

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

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

    .hamburger:hover {
      background: var(--accent-soft);
    }

    .mobile-nav {
      display: none;
      max-height: 0;
      overflow: hidden;
      background: var(--bg);
      border-top: 1px solid var(--line);
      transition: max-height .3s ease;
    }

    .mobile-nav.open {
      display: block;
      max-height: 480px;
      overflow-y: auto;
    }

    .mobile-link {
      display: block;
      padding: 14px 4px;
      border-radius: 10px;
      font-size: 16px;
      font-weight: 500;
      color: var(--ink);
      border-bottom: 1px solid rgba(231, 224, 211, .6);
    }

    .mobile-link.active {
      color: var(--primary);
      background: var(--accent-soft);
      padding-left: 14px;
      font-weight: 650;
    }

    .mobile-link:hover {
      background: var(--accent-soft);
      color: var(--primary-deep);
    }

    .mobile-cta {
      margin-top: 18px;
      justify-content: center;
    }

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

      .hamburger {
        display: inline-flex;
      }
    }

    /* ================= button / badge ================= */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      border-radius: 999px;
      padding: 12px 24px;
      transition: background .2s, transform .16s, box-shadow .2s, border-color .2s, color .2s;
      text-decoration: none;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 6px 18px rgba(240, 138, 53, .24);
    }

    .btn-primary:hover {
      background: var(--accent-deep);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 10px 25px rgba(240, 138, 53, .28);
    }

    .btn-primary:active {
      transform: scale(.98);
    }

    .btn-outline {
      background: var(--surface);
      color: var(--primary);
      border: 1px solid rgba(11, 107, 88, .3);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      background: rgba(11, 107, 88, .06);
      transform: translateY(-1px);
    }

    .btn-outline:active {
      transform: scale(.98);
    }

    .btn-whiteoutline {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .55);
    }

    .btn-whiteoutline:hover {
      background: rgba(255, 255, 255, .08);
      border-color: #fff;
      transform: translateY(-1px);
    }

    .chip {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      background: rgba(11, 107, 88, .08);
      color: var(--primary);
      font-size: 13px;
      font-weight: 500;
      line-height: 1.4;
    }

    .chip-warm {
      background: var(--accent-soft);
      color: #a75317;
    }

    /* ================= section spacing ================= */
    .section-space {
      padding: 96px 0;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .05em;
      color: var(--primary);
      text-transform: none;
    }

    .section-eyebrow::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--accent);
      border-radius: 20px;
      display: inline-block;
    }

    .section-title {
      font-size: 30px;
      line-height: 1.35;
      font-weight: 800;
      margin: 12px 0 16px;
      letter-spacing: -.01em;
    }

    @media (max-width: 640px) {
      .section-space {
        padding: 64px 0;
      }

      .section-title {
        font-size: 24px;
      }
    }

    /* ================= category hero ================= */
    .cat-hero {
      position: relative;
      background:
        linear-gradient(100deg, rgba(246, 243, 237, .94), rgba(255, 252, 247, .88)),
        url('/assets/images/backpic/back-1.png') center 35% / cover no-repeat;
      border-bottom: 1px solid var(--line);
      overflow: hidden;
      padding: 72px 0 60px;
    }

    .cat-hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(0, .8fr);
      gap: 48px;
      align-items: center;
    }

    .hero-pretitle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 252, 247, .9);
      border: 1px solid var(--line);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      border-radius: 999px;
      padding: 6px 14px 6px 10px;
      margin-bottom: 22px;
    }

    .hero-pretitle::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(240, 138, 53, .18);
    }

    .cat-hero h1 {
      margin: 0 0 18px;
      font-size: 40px;
      line-height: 1.3;
      font-weight: 900;
      letter-spacing: -.03em;
      color: var(--ink);
    }

    .cat-hero h1 span {
      color: var(--primary);
    }

    .cat-hero p.lead {
      max-width: 620px;
      font-size: 16px;
      line-height: 1.9;
      color: var(--muted);
      margin: 0 0 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-visual-wrap {
      position: relative;
    }

    .hero-visual-card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 22px;
      box-shadow: 0 2px 4px rgba(27, 43, 39, .05), 0 18px 40px rgba(27, 43, 39, .1);
      overflow: hidden;
      padding: 12px 12px 16px;
      transform: rotate(.5deg);
    }

    .hero-visual-card.block-rotate {
      transform: rotate(-.4deg);
    }

    .hero-visual-card img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      border-radius: 14px;
    }

    .visual-caption {
      padding: 10px 6px 0;
      display: flex;
      justify-content: space-between;
      gap: 8px;
      align-items: center;
    }

    .visual-caption strong {
      font-size: 14px;
      color: var(--ink);
    }

    .visual-caption span {
      font-size: 12px;
      color: var(--muted);
    }

    @media (max-width: 860px) {
      .cat-hero {
        padding: 52px 0 48px;
      }

      .cat-hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .cat-hero h1 {
        font-size: 32px;
      }

      .hero-visual-card {
        max-width: 420px;
        margin: 0 auto;
      }
    }

    @media (max-width: 520px) {
      .cat-hero h1 {
        font-size: 28px;
      }

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

    /* ================= help topic cards ================= */
    .help-topic-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .help-topic-card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius-panel);
      padding: 28px 24px 24px;
      box-shadow: var(--shadow-card);
      transition: border-color .2s, box-shadow .2s, transform .2s;
      display: flex;
      flex-direction: column;
    }

    .help-topic-card:hover {
      border-color: rgba(11, 107, 88, .55);
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .help-topic-card.dark-card {
      background: var(--primary-deep);
      border-color: var(--line-on-dark);
    }

    .topic-number {
      display: inline-flex;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      background: var(--accent-soft);
      color: var(--accent-deep);
      font-size: 18px;
      margin-bottom: 18px;
    }

    .dark-card .topic-number {
      background: rgba(255, 255, 255, .1);
      color: #fff;
    }

    .topic-title {
      font-size: 19px;
      font-weight: 800;
      margin: 0 0 10px;
    }

    .topic-desc {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
      margin: 0 0 18px;
      flex: 1;
    }

    .dark-card .topic-desc {
      color: rgba(255, 255, 255, .7);
    }

    .topic-link {
      align-self: flex-start;
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .topic-link:hover {
      color: var(--accent-deep);
    }

    .dark-card .topic-link {
      color: #fff;
    }

    .dark-card .topic-link:hover {
      color: var(--accent-soft);
    }

    @media (max-width: 900px) {
      .help-topic-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      .help-topic-grid {
        gap: 14px;
      }
    }

    /* ================= FAQ ================= */
    .faq-layout {
      display: grid;
      grid-template-columns: 300px minmax(0, 1fr);
      gap: 56px;
    }

    .faq-side {
      position: relative;
    }

    .faq-side-inner {
      position: sticky;
      top: 100px;
    }

    .faq-side-title {
      display: grid;
      gap: 10px;
    }

    .faq-side-title h2 {
      font-size: 28px;
      line-height: 1.3;
      margin: 0;
      font-weight: 800;
    }

    .faq-side-title p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .faq-anchor-nav {
      margin-top: 22px;
      display: grid;
      gap: 6px;
    }

    .faq-anchor-nav a {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--muted);
      padding: 8px 12px;
      border-radius: 10px;
      transition: background .2s, color .2s;
    }

    .faq-anchor-nav a::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--line);
      transition: background .2s;
    }

    .faq-anchor-nav a:hover {
      background: var(--surface);
      color: var(--primary);
    }

    .faq-anchor-nav a:hover::before {
      background: var(--accent);
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    details.faq-item {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 16px;
      overflow: hidden;
      transition: border-color .2s, box-shadow .2s;
    }

    details.faq-item[open] {
      border-color: rgba(11, 107, 88, .5);
      box-shadow: 0 2px 8px rgba(11, 107, 88, .08), 0 14px 30px rgba(27, 43, 39, .05);
    }

    details.faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 16px;
      font-weight: 650;
      color: var(--ink);
      position: relative;
      transition: color .2s;
    }

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

    details.faq-item summary:hover {
      color: var(--primary);
    }

    details.faq-item summary::before {
      content: "";
      width: 3px;
      border-radius: 20px;
      background: var(--accent);
      position: absolute;
      left: 0;
      top: 18px;
      bottom: 18px;
      opacity: 0;
      transform: scaleY(.4);
      transition: opacity .25s, transform .25s;
    }

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

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(11, 107, 88, .08);
      position: relative;
      flex: none;
      transition: background .2s, transform .25s;
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      width: 10px;
      height: 2px;
      background: var(--primary);
      border-radius: 4px;
      transform: translate(-50%, -50%);
    }

    .faq-icon::after {
      width: 2px;
      height: 10px;
    }

    details[open] .faq-icon {
      background: var(--accent-soft);
      transform: rotate(90deg);
    }

    details[open] .faq-icon::after {
      opacity: 0;
    }

    .faq-answer {
      padding: 0 22px 22px 26px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.9;
      border-top: 1px dashed rgba(231, 224, 211, .7);
      margin-top: 0;
    }

    .faq-answer p {
      margin: 14px 0;
    }

    .faq-answer p:last-child {
      margin-bottom: 0;
    }

    .faq-inner-link {
      color: var(--primary);
      font-weight: 600;
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .faq-inner-link:hover {
      color: var(--accent-deep);
    }

    @media (max-width: 860px) {
      .faq-layout {
        grid-template-columns: 1fr;
        gap: 26px;
      }

      .faq-side-inner {
        position: static;
      }

      .faq-anchor-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
      }

      .faq-anchor-nav a {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 999px;
        padding: 6px 12px;
      }
    }

    /* ================= process + image ================= */
    .help-process {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 24px;
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }

    .process-inner {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
      align-items: stretch;
    }

    .process-content {
      padding: 44px 40px;
    }

    .process-steps {
      margin: 26px 0 0;
      display: grid;
      gap: 0;
    }

    .process-step {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(231, 224, 211, .7);
    }

    .process-step:last-child {
      border-bottom: 0;
    }

    .step-num {
      display: inline-flex;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 800;
    }

    .process-step.copy .step-num {
      background: var(--accent);
    }

    .process-step h4 {
      margin: 0 0 4px;
      font-size: 16px;
      font-weight: 700;
    }

    .process-step p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .process-media {
      position: relative;
      min-height: 100%;
      overflow: hidden;
      border-left: 1px solid var(--line);
    }

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

    .process-media-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(6, 74, 61, .18), rgba(6, 74, 61, .02));
    }

    @media (max-width: 900px) {
      .process-inner {
        grid-template-columns: 1fr;
      }

      .process-media {
        min-height: 240px;
        border-left: 0;
        border-top: 1px solid var(--line);
        position: relative;
      }

      .process-media img {
        position: absolute;
      }
    }

    @media (max-width: 520px) {
      .process-content {
        padding: 28px 20px;
      }
    }

    /* ================= solid cta ================= */
    .cta-band {
      position: relative;
      border-radius: 26px;
      background:
        linear-gradient(rgba(6, 74, 61, .82), rgba(6, 74, 61, .9)),
        url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
      padding: 52px 40px;
      color: #fff;
      overflow: hidden;
      box-shadow: 0 20px 38px rgba(6, 74, 61, .14);
    }

    .cta-band h2 {
      color: #fff;
      font-weight: 800;
      margin-top: 10px;
      font-size: 28px;
    }

    .cta-band p {
      color: rgba(255, 255, 255, .8);
      max-width: 680px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 28px;
    }

    @media (max-width: 560px) {
      .cta-band {
        padding: 34px 20px;
      }

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

    /* ================= contact / support ================= */
    .contact-panel {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      background: var(--accent-soft);
      border: 1px solid rgba(240, 138, 53, .22);
      border-radius: 20px;
      padding: 28px 30px;
    }

    .contact-panel h3 {
      margin: 0 0 6px;
      font-size: 20px;
    }

    .contact-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .contact-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    @media (max-width: 600px) {
      .contact-panel {
        padding: 22px 18px;
        flex-direction: column;
        align-items: flex-start;
      }

      .contact-links .btn {
        width: 100%;
      }
    }

    /* ================= footer ================= */
    .site-footer {
      background: var(--primary-deep);
      color: rgba(255, 255, 255, .78);
      margin-top: 96px;
      padding: 56px 0 26px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 34px;
      padding-bottom: 42px;
      border-bottom: 1px solid var(--line-on-dark);
    }

    .footer-brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 800;
    }

    .footer-brand-desc {
      margin: 16px 0 12px;
      font-size: 14px;
      line-height: 1.85;
      color: rgba(255, 255, 255, .62);
      max-width: 360px;
    }

    .footer-legal {
      font-size: 12px;
      color: rgba(255, 255, 255, .45);
      margin: 0;
    }

    .footer-title {
      color: rgba(255, 255, 255, .95);
      font-size: 15px;
      font-weight: 700;
      margin: 6px 0 14px;
    }

    .footer-nav {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 8px;
    }

    .footer-nav a,
    .footer-nav .not-link {
      font-size: 14px;
      color: rgba(255, 255, 255, .68);
      text-decoration: none;
      transition: color .2s;
    }

    .footer-nav a:hover {
      color: var(--accent);
      text-decoration: underline;
      text-underline-offset: 4px;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 8px;
      padding-top: 22px;
      font-size: 13px;
      color: rgba(255, 255, 255, .46);
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, .62);
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    @media (max-width: 900px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
      }
    }

    @media (max-width: 560px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
      }

      .site-footer {
        margin-top: 64px;
        padding-top: 40px;
      }
    }

    /* misc util */
    .text-primary {
      color: var(--primary);
    }

    .bg-surface {
      background: var(--surface);
    }

    .section-number {
      font-family: var(--font-ui);
      font-feature-settings: "tnum";
    }

    .link-arrow {
      display: inline-flex;
      align-items: center;
      transition: gap .2s;
    }

    .link-arrow:hover {
      gap: 4px;
    }

    @media (max-width: 520px) {
      .container-site {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

/* roulang page: category2 */
:root {
    --bg:#F6F3ED;
    --surface:#FFFCF7;
    --line:#E7E0D3;
    --ink:#1B2B27;
    --muted:#596A64;
    --primary:#0B6B58;
    --primary-deep:#064A3D;
    --accent:#F08A35;
    --accent-deep:#D66E1E;
    --accent-soft:#F8E4D1;
    --ok:#2F9E7F;
    --line-on-dark:#24423B;
    --radius-sm:6px;
    --radius-card:16px;
    --radius-panel:20px;
    --shadow-card:0 1px 2px rgba(27,43,39,.04),0 8px 24px rgba(27,43,39,.07);
    --shadow-float:0 2px 6px rgba(27,43,39,.06),0 18px 40px rgba(27,43,39,.1);
  }

  * {
    box-sizing:border-box;
  }

  html {
    scroll-behavior:smooth;
  }

  body {
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }

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

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

  a, button {
    -webkit-tap-highlight-color:transparent;
  }

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

  h1,h2,h3,h4 {
    line-height:1.35;
    margin:0;
    color:var(--ink);
  }

  a:focus-visible,
  button:focus-visible {
    outline:2px solid var(--primary);
    outline-offset:2px;
    border-radius:8px;
  }

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

  .section-pad {
    padding:96px 0;
  }

  .section-pad.tight-top {
    padding-top:24px;
  }

  .text-ink {
    color:var(--ink);
  }

  /* 顶部导航 */
  .site-header {
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,252,247,.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }

  .logo-mark {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 0 3px rgba(11,107,88,.12);
  }

  .logo-mark svg {
    width:22px;
    height:22px;
    fill:none;
    stroke:#fff;
    stroke-width:1.4;
  }

  .desktop-nav .nav-link {
    display:inline-flex;
    align-items:center;
    padding:10px 18px;
    border-radius:999px;
    font-size:15px;
    font-weight:500;
    letter-spacing:.02em;
    color:var(--muted);
    transition:background .22s ease,color .22s ease,box-shadow .22s ease;
  }

  .desktop-nav .nav-link:hover {
    background:rgba(11,107,88,.08);
    color:var(--primary);
  }

  .desktop-nav .nav-link.active {
    background:var(--accent-soft);
    color:var(--primary);
    font-weight:600;
  }

  .desktop-nav .nav-link.active::before {
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    margin-right:7px;
    border-radius:999px;
    background:var(--primary);
    vertical-align:middle;
  }

  .nav-cta {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:40px;
    padding:8px 22px;
    border-radius:999px;
    background:var(--accent);
    color:#fff;
    font-size:15px;
    font-weight:600;
    white-space:nowrap;
    margin-left:10px;
    transition:background .22s ease,transform .18s ease,box-shadow .22s ease;
  }

  .nav-cta:hover {
    background:var(--accent-deep);
    transform:translateY(-1px);
    box-shadow:0 10px 22px rgba(240,138,53,.22);
  }

  .nav-cta:active {
    transform:scale(.98);
  }

  .hamburger {
    display:none;
    width:44px;
    height:44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:var(--surface);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    transition:border-color .2s;
  }

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

  .hamburger span {
    display:block;
    width:20px;
    height:2px;
    border-radius:2px;
    background:var(--ink);
    transition:transform .2s,opacity .2s;
  }

  .mobile-nav {
    display:none;
    position:absolute;
    top:72px;
    left:0;
    right:0;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 50px rgba(27,43,39,.12);
    padding:0 20px 24px;
  }

  .mobile-nav.open {
    display:block;
  }

  .mobile-link {
    display:block;
    padding:16px 6px;
    border-bottom:1px solid var(--line);
    color:var(--ink);
    font-size:16px;
    font-weight:500;
  }

  .mobile-link:hover,
  .mobile-link.active {
    color:var(--primary);
    font-weight:600;
  }

  .mobile-cta {
    margin-top:16px;
  }

  /* 按钮 */
  .btn {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:48px;
    padding:0 28px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    line-height:1;
    white-space:nowrap;
    transition:transform .18s ease,background .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
  }

  .btn-primary {
    background:var(--accent);
    color:#fff;
    box-shadow:0 12px 28px rgba(240,138,53,.2);
  }

  .btn-primary:hover {
    background:var(--accent-deep);
    transform:translateY(-2px);
  }

  .btn-ghost {
    background:transparent;
    color:var(--primary);
    border:1px solid rgba(11,107,88,.4);
  }

  .btn-ghost:hover {
    border-color:var(--primary);
    background:rgba(11,107,88,.06);
    transform:translateY(-1px);
  }

  .btn-accent-solid {
    background:var(--accent);
    color:#fff;
    box-shadow:0 14px 30px rgba(0,0,0,.2);
  }

  .btn-accent-solid:hover {
    background:#fff;
    color:var(--primary-deep);
    transform:translateY(-2px);
  }

  .btn-outline-light {
    border:1px solid rgba(255,255,255,.5);
    color:#fff;
    background:rgba(255,255,255,.04);
  }

  .btn-outline-light:hover {
    background:rgba(255,255,255,.12);
    transform:translateY(-1px);
  }

  /* Hero */
  .page-hero {
    position:relative;
    text-align:center;
    padding:88px 0 78px;
    border-bottom:1px solid var(--line);
    background:
      linear-gradient(180deg, rgba(246,243,237,.92) 0%, rgba(255,252,247,.88) 100%),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  }

  .page-hero::before {
    content:"";
    position:absolute;
    inset:0;
    pointer-events:none;
    background:
      radial-gradient(circle at 8% 20%, rgba(240,138,53,.12), transparent 32%),
      radial-gradient(circle at 88% 84%, rgba(11,107,88,.1), transparent 34%);
  }

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

  .breadcrumb {
    display:flex;
    justify-content:center;
    align-items:center;
    gap:10px;
    margin-bottom:22px;
    font-size:13px;
    color:var(--muted);
  }

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

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

  .breadcrumb .current {
    color:var(--ink);
    font-weight:600;
  }

  .hero-caption {
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 18px;
    border-radius:999px;
    background:rgba(248,228,209,.9);
    color:var(--accent-deep);
    font-size:13px;
    font-weight:600;
    letter-spacing:.04em;
  }

  .hero-caption svg {
    width:16px;
    height:16px;
  }

  .page-hero h1 {
    max-width:760px;
    margin:22px auto 0;
    font-size:44px;
    font-weight:800;
    line-height:1.3;
    letter-spacing:-.02em;
  }

  .hero-sub {
    max-width:840px;
    margin:20px auto 0;
    color:var(--muted);
    font-size:17px;
    line-height:1.9;
  }

  .hero-actions {
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:14px;
    margin-top:32px;
  }

  .hero-note {
    display:flex;
    justify-content:center;
    gap:14px;
    flex-wrap:wrap;
    margin-top:26px;
  }

  .mini-badge {
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 12px;
    border-radius:999px;
    background:var(--surface);
    border:1px solid var(--line);
    font-size:12px;
    color:var(--muted);
  }

  /* 通用小标题 */
  .eyebrow {
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--primary);
    font-size:12px;
    font-weight:700;
    letter-spacing:.14em;
    text-transform:uppercase;
  }

  .eyebrow span {
    display:inline-block;
    width:24px;
    height:2px;
    background:var(--accent);
    border-radius:2px;
  }

  .section-head {
    max-width:820px;
  }

  .section-head h2 {
    margin-top:10px;
    font-size:30px;
    font-weight:700;
    letter-spacing:-.01em;
  }

  .section-head p,
  .section-lead {
    margin-top:16px;
    color:var(--muted);
    font-size:16px;
    line-height:1.85;
  }

  /* 玩法概览矩阵 */
  .feature-grid {
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    margin-top:48px;
  }

  .feature-card {
    position:relative;
    padding:26px 22px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-card);
    transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  }

  .feature-card:hover {
    border-color:rgba(11,107,88,.4);
    box-shadow:var(--shadow-float);
    transform:translateY(-4px);
  }

  .feature-index {
    font-size:12px;
    font-weight:700;
    color:rgba(11,107,88,.45);
    letter-spacing:.08em;
  }

  .card-icon {
    display:flex;
    align-items:center;
    justify-content:center;
    width:46px;
    height:46px;
    margin-top:18px;
    border-radius:14px;
    background:rgba(11,107,88,.08);
    color:var(--primary);
  }

  .card-icon svg {
    width:24px;
    height:24px;
    stroke-width:1.8;
  }

  .feature-card h3 {
    margin-top:18px;
    font-size:20px;
    font-weight:700;
  }

  .feature-card p {
    margin:8px 0 0;
    color:var(--muted);
    font-size:14px;
    line-height:1.75;
  }

  .feature-link {
    display:inline-flex;
    align-items:center;
    gap:5px;
    margin-top:18px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
  }

  .feature-link:hover {
    color:var(--accent-deep);
  }

  .feature-link svg {
    width:15px;
    height:15px;
    transition:transform .2s;
  }

  .feature-link:hover svg {
    transform:translateX(4px);
  }

  /* 操作流程 */
  .steps-wrap {
    display:grid;
    grid-template-columns:.95fr 1.35fr;
    gap:56px;
    align-items:center;
  }

  .steps-media {
    position:relative;
  }

  .steps-media img {
    width:100%;
    aspect-ratio:4/4.2;
    object-fit:cover;
    border-radius:24px;
    box-shadow:var(--shadow-float);
  }

  .steps-media::after {
    content:"";
    position:absolute;
    inset:auto -18px -18px auto;
    width:80px;
    height:80px;
    border-radius:24px;
    background:var(--accent-soft);
    z-index:-1;
  }

  .steps-list {
    position:relative;
    padding-left:0;
  }

  .step-item {
    position:relative;
    padding:0 0 34px 76px;
  }

  .step-item:last-child {
    padding-bottom:0;
  }

  .step-item::before {
    content:"";
    position:absolute;
    left:27px;
    top:62px;
    bottom:6px;
    width:1px;
    background:var(--line);
  }

  .step-item:last-child::before {
    display:none;
  }

  .step-num {
    position:absolute;
    left:0;
    top:0;
    display:flex;
    align-items:center;
    justify-content:center;
    width:56px;
    height:56px;
    border-radius:50%;
    background:var(--surface);
    border:1px solid rgba(11,107,88,.35);
    color:var(--primary);
    font-size:17px;
    font-weight:800;
    box-shadow:0 0 0 5px rgba(11,107,88,.05);
  }

  .step-item h3 {
    font-size:20px;
    font-weight:700;
  }

  .step-item p {
    margin:8px 0 0;
    color:var(--muted);
    font-size:15px;
    line-height:1.8;
  }

  /* 规则与入口 */
  .rules-two-col {
    display:grid;
    grid-template-columns:.9fr 1.4fr;
    gap:36px;
    align-items:start;
    margin-top:44px;
  }

  .entry-list {
    display:grid;
    gap:14px;
  }

  .entry-card {
    display:flex;
    gap:14px;
    padding:20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-card);
  }

  .entry-card .entry-ico {
    flex:0 0 auto;
    width:42px;
    height:42px;
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:rgba(11,107,88,.1);
    color:var(--primary);
  }

  .entry-card .entry-ico svg {
    width:22px;
    height:22px;
  }

  .entry-card h3 {
    font-size:16px;
    font-weight:700;
  }

  .entry-card p {
    margin:4px 0 0;
    font-size:13px;
    line-height:1.75;
    color:var(--muted);
  }

  .acc-list {
    display:grid;
    gap:12px;
  }

  .acc-item {
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    overflow:hidden;
    transition:border-color .2s,box-shadow .2s;
  }

  .acc-item.open {
    border-color:rgba(11,107,88,.45);
    box-shadow:var(--shadow-card);
  }

  .acc-toggle {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    width:100%;
    padding:18px 20px;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    transition:background .2s;
  }

  .acc-toggle:hover {
    background:rgba(246,243,237,.65);
  }

  .acc-icon {
    flex:0 0 auto;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:28px;
    height:28px;
    border-radius:50%;
    background:var(--accent-soft);
    color:var(--accent-deep);
    font-size:20px;
    line-height:1;
    transition:transform .22s,background .22s;
  }

  .acc-item.open .acc-icon {
    transform:rotate(45deg);
    background:rgba(11,107,88,.1);
    color:var(--primary);
  }

  .acc-panel {
    display:none;
    padding:0 20px 20px;
    color:var(--muted);
    font-size:15px;
    line-height:1.85;
  }

  .acc-item.open .acc-panel {
    display:block;
  }

  .acc-panel p {
    margin:0 0 10px;
  }

  .acc-panel ul {
    margin:8px 0 0;
    padding-left:18px;
  }

  .acc-panel li {
    margin:6px 0;
  }

  /* 渠道提醒 */
  .tip-grid {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:18px;
    margin-top:36px;
  }

  .tip-card {
    padding:24px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-card);
    transition:border-color .2s,transform .2s;
  }

  .tip-card:hover {
    border-color:rgba(11,107,88,.3);
    transform:translateY(-3px);
  }

  .tip-mark {
    display:flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    border-radius:12px;
    background:rgba(240,138,53,.12);
    color:var(--accent-deep);
    font-size:20px;
    font-weight:800;
  }

  .tip-card h3 {
    margin-top:18px;
    font-size:17px;
    font-weight:700;
  }

  .tip-card p {
    margin:8px 0 0;
    color:var(--muted);
    font-size:14px;
    line-height:1.8;
  }

  /* FAQ */
  .faq-wrap {
    max-width:900px;
    margin:44px auto 0;
  }

  .faq-item {
    background:var(--surface);
    border:1px solid var(--line);
    border-left:4px solid var(--primary);
    border-radius:14px;
    margin-bottom:12px;
    overflow:hidden;
  }

  .faq-item:last-child {
    margin-bottom:0;
  }

  .faq-q {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:16px;
    width:100%;
    padding:18px 20px 18px 22px;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
  }

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

  .faq-icon {
    flex:0 0 auto;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:26px;
    height:26px;
    border-radius:50%;
    background:rgba(11,107,88,.08);
    color:var(--primary);
    font-size:18px;
    transition:transform .2s;
  }

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

  .faq-a {
    display:none;
    padding:0 22px 20px 22px;
    color:var(--muted);
    font-size:15px;
    line-height:1.85;
  }

  .faq-item.open .faq-a {
    display:block;
  }

  .faq-a p {
    margin:0;
  }

  /* 下载 CTA */
  .cta-outer {
    padding-bottom:96px;
    background:transparent;
  }

  .cta-panel {
    position:relative;
    overflow:hidden;
    border-radius:28px;
    padding:64px 52px;
    background:
      linear-gradient(135deg, rgba(6,74,61,.93), rgba(6,74,61,.76)),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color:rgba(255,255,255,.9);
    text-align:center;
  }

  .cta-label {
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:7px 16px;
    border-radius:999px;
    background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.18);
    color:#fff;
    font-size:13px;
    letter-spacing:.04em;
  }

  .cta-panel h2 {
    max-width:720px;
    margin:20px auto 0;
    font-size:28px;
    color:#fff;
    line-height:1.45;
  }

  .cta-panel p {
    max-width:680px;
    margin:14px auto 0;
    color:rgba(255,255,255,.78);
    font-size:15px;
  }

  .cta-actions {
    display:flex;
    justify-content:center;
    gap:14px;
    flex-wrap:wrap;
    margin-top:28px;
  }

  .cta-note {
    margin-top:22px;
    color:rgba(255,255,255,.55);
    font-size:13px;
  }

  /* 页脚 */
  .site-footer {
    background:var(--primary-deep);
    color:rgba(255,255,255,.72);
    padding-top:68px;
  }

  .site-footer a {
    color:rgba(255,255,255,.7);
    transition:color .2s, background .2s, padding-left .2s;
  }

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

  .footer-grid {
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:48px;
    padding-bottom:40px;
  }

  .footer-brand-logo {
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:14px;
    color:#fff;
    font-size:20px;
    font-weight:800;
  }

  .footer-brand-logo .logo-mark {
    width:34px;
    height:34px;
    background:rgba(255,255,255,.1);
  }

  .footer-brand-logo .logo-mark svg {
    width:20px;
    height:20px;
  }

  .footer-brand-desc {
    font-size:14px;
    line-height:1.9;
    margin:0;
    color:rgba(255,255,255,.68);
    max-width:320px;
  }

  .footer-legal {
    margin-top:14px;
    font-size:12px;
    line-height:1.8;
    color:rgba(255,255,255,.45);
  }

  .footer-title {
    color:#fff;
    font-size:15px;
    font-weight:700;
    margin-bottom:16px;
  }

  .footer-nav {
    list-style:none;
    padding:0;
    margin:0;
  }

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

  .footer-nav a,
  .footer-nav .not-link {
    display:inline-block;
    font-size:14px;
    line-height:1.6;
  }

  .footer-nav .not-link {
    color:rgba(255,255,255,.5);
  }

  .footer-bottom {
    border-top:1px solid var(--line-on-dark);
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
    padding:20px 0 24px;
    font-size:13px;
    color:rgba(255,255,255,.55);
  }

  .footer-bottom a {
    color:rgba(255,255,255,.62);
  }

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

  /* 响应式 */
  @media (max-width:1024px) {
    .section-pad {
      padding:72px 0;
    }

    .desktop-nav {
      display:none;
    }

    .hamburger {
      display:inline-flex;
    }

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

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

    .steps-media img {
      aspect-ratio:16/10;
    }

    .rules-two-col {
      grid-template-columns:1fr;
    }

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

    .footer-grid {
      grid-template-columns:repeat(2,1fr);
      gap:32px;
    }
  }

  @media (max-width:768px) {
    .container-site {
      padding-left:20px;
      padding-right:20px;
    }

    .page-hero {
      padding:64px 0 60px;
    }

    .page-hero h1 {
      font-size:34px;
    }

    .hero-sub {
      font-size:16px;
    }

    .section-head h2 {
      font-size:26px;
    }

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

    .cta-panel h2 {
      font-size:24px;
    }
  }

  @media (max-width:640px) {
    .section-pad {
      padding:60px 0;
    }

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

    .step-num {
      width:48px;
      height:48px;
      font-size:16px;
    }

    .step-item {
      padding-left:64px;
    }

    .step-item::before {
      left:24px;
    }

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

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

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

    .hero-actions,
    .cta-actions {
      flex-direction:column;
      align-items:stretch;
    }

    .btn {
      width:100%;
    }
  }

  @media (max-width:520px) {
    .logo-mark {
      width:34px;
      height:34px;
    }

    .desktop-nav {
      display:none;
    }

    .page-hero h1 {
      font-size:29px;
      letter-spacing:-.01em;
    }

    .page-hero {
      padding:48px 0 52px;
    }

    .hero-actions {
      margin-top:24px;
    }

    .section-head h2 {
      font-size:23px;
    }

    .brand-small {
      display:block;
    }
  }