/* roulang page: index */
:root {
  --primary: #0E5E4A;
  --primary-dark: #0B3D33;
  --primary-light: #157A5E;
  --accent: #FF7A1A;
  --accent-light: #FF9F43;
  --accent-deep: #E86600;
  --bg: #F6F7F5;
  --white: #FFFFFF;
  --text: #232A29;
  --text-secondary: #5D6B67;
  --border: #E8ECE9;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(14,45,38,0.06);
  --shadow-md: 0 12px 32px rgba(14,45,38,0.14);
  --shadow-lg: 0 20px 48px rgba(14,45,38,0.18);
  --container-w: 1200px;
  --space-section: 80px;
  --font-main: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "DIN Alternate", "Barlow", "Inter", system-ui, sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--space-section) 0;
}
.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
  position: relative;
}
.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 32px;
  border-radius: 12px;
  transition: all .3s ease;
  border: 1.5px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}
.btn:active {
  transform: translateY(0) scale(.98);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 122, 26, .28);
}
.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 122, 26, .36);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .7);
}
.btn-outline:hover {
  background: #fff;
  color: var(--primary-dark);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--primary-dark);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary);
  transform: translateY(-2px);
}
.btn-lg {
  padding: 18px 42px;
  font-size: 16px;
  border-radius: 14px;
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
  border-radius: 10px;
}

.badge-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-deep);
  background: rgba(255, 122, 26, .14);
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: .5px;
}
.card-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(14, 94, 74, .1);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== Topbar ===== */
.topbar {
  background: #0B3D33;
  height: 38px;
  line-height: 38px;
  font-size: 13px;
  color: rgba(255, 255, 255, .85);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 100%;
}
.topbar-domain {
  font-family: var(--font-num);
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  letter-spacing: .5px;
}
.topbar-tip {
  flex: 1;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.topbar-tip::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-light);
  flex-shrink: 0;
  animation: pulse-dot 2s infinite ease-in-out;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 154, 67, .6); }
  50% { box-shadow: 0 0 0 6px rgba(255, 154, 67, 0); }
}
.topbar-link {
  color: var(--accent-light);
  font-weight: 600;
  font-size: 13px;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease;
}
.topbar-link:hover {
  border-color: var(--accent-light);
}

/* ===== Header / Nav ===== */
.site-header {
  background: #fff;
  box-shadow: 0 1px 6px rgba(14, 45, 38, .05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(14, 45, 38, .08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: .5px;
  line-height: 1.2;
}
.brand-text em {
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  display: block;
  margin-top: 1px;
  letter-spacing: 1px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-left: auto;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 2px;
  position: relative;
  white-space: nowrap;
  transition: color .25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary-dark);
  font-weight: 700;
}
.nav-link.active::after {
  transform: scaleX(1);
}
.btn-nav {
  margin-left: 8px;
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0E5E4A 0%, #0B3D33 100%);
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .12;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  border: 60px solid rgba(255, 122, 26, .08);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  padding: 72px 24px;
}
.hero-copy h1 {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-copy h1 .hl {
  background: linear-gradient(120deg, var(--accent-light), #FFB37A);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .82);
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255, 255, 255, .75);
}
.hero-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-meta i {
  color: var(--accent-light);
}
.hero-visual {
  position: relative;
}
.hero-visual img {
  width: 100%;
  border-radius: 24px;
  border: 4px solid rgba(255, 255, 255, .15);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
  object-fit: cover;
  aspect-ratio: 4/3;
}
.hero-float-card {
  position: absolute;
  left: 20px;
  bottom: 24px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, .2);
  min-width: 220px;
}
.float-ico {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}
.float-label {
  font-size: 12px;
  color: var(--text-secondary);
  display: block;
  line-height: 1.4;
}
.float-score {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  display: block;
  line-height: 1.3;
  font-family: var(--font-num);
}

/* ===== Data Badges Strip ===== */
.data-strip {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
  margin-top: -1px;
}
.badges-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.badge-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg);
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: box-shadow .3s ease, transform .3s ease;
}
.badge-item:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  flex-shrink: 0;
}
.badge-icon-green {
  background: linear-gradient(135deg, var(--primary), #1C8A6E);
}
.badge-icon-orange {
  background: linear-gradient(135deg, var(--accent), #FFB347);
}
.badge-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.badge-num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  letter-spacing: -.5px;
}
.badge-label {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* ===== Compare Table ===== */
.compare-section {
  background: var(--bg);
}
.compare-card {
  background: var(--white);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}
.compare-table thead th {
  background: var(--primary-dark);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 18px 24px;
  text-align: center;
  white-space: nowrap;
}
.compare-table thead th:first-child {
  text-align: left;
  border-radius: 0;
  font-size: 16px;
}
.compare-table tbody td {
  padding: 16px 24px;
  text-align: center;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  white-space: nowrap;
}
.compare-table tbody tr:last-child td {
  border-bottom: none;
}
.compare-table tbody tr:hover td {
  background: #F9FBFA;
}
.compare-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text);
}
.check-icon {
  display: inline-flex;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(14, 94, 74, .12);
  color: var(--primary);
  font-size: 12px;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.dash-icon {
  display: inline-flex;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(106, 117, 114, .1);
  color: #A8B4B0;
  font-size: 14px;
  align-items: center;
  justify-content: center;
}
.badge-tag.small {
  font-size: 11px;
  padding: 2px 8px;
}
.table-note {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  background: #FBFCFB;
}

/* ===== Tier Cards ===== */
.tier-section {
  background: var(--white);
}
.tier-list {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.tier-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  transition: box-shadow .3s ease, transform .3s ease;
}
.tier-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.tier-card.active {
  border: 2px solid var(--accent);
  background: linear-gradient(180deg, #FFFDFB 0%, #fff 100%);
  box-shadow: 0 8px 32px rgba(255, 122, 26, .12);
}
.tier-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.tier-header h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
}
.tier-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(14, 94, 74, .1);
  color: var(--primary);
}
.tier-badge.special {
  background: rgba(255, 122, 26, .16);
  color: var(--accent-deep);
}
.tier-list ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.tier-list li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.6;
}
.tier-list li i {
  color: var(--primary);
  font-size: 12px;
  margin-top: 5px;
  flex-shrink: 0;
}
.tier-list li.locked {
  color: #A8B4B0;
}
.tier-list li.locked i {
  color: #A8B4B0;
}
.tier-data {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-deep);
  background: rgba(255, 122, 26, .1);
  border-radius: 12px;
  padding: 12px 16px;
  text-align: center;
}

/* ===== Content Preview ===== */
.content-preview {
  background: var(--bg);
}
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.preview-card {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: box-shadow .3s ease, transform .3s ease;
  position: relative;
}
.preview-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.preview-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform .4s ease;
}
.preview-card:hover img {
  transform: scale(1.03);
}
.preview-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.preview-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}
.preview-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}
.preview-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .3s ease, color .3s ease;
}
.preview-link:hover {
  color: var(--accent-deep);
  gap: 8px;
}
.preview-locked .preview-card-inner {
  opacity: .55;
}
.lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 61, 51, .78);
  backdrop-filter: blur(3px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 2;
  border-radius: 20px;
}
.lock-overlay .lock-icon {
  font-size: 32px;
  color: var(--accent-light);
}
.lock-overlay p {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
}
.preview-card .btn {
  margin-top: 4px;
}

/* ===== News / CMS List ===== */
.news-section {
  background: var(--white);
}
.news-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}
.news-more {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(14, 94, 74, .2);
  transition: all .3s ease;
}
.news-more:hover {
  background: rgba(14, 94, 74, .08);
  gap: 10px;
  border-color: rgba(14, 94, 74, .4);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.news-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 20px;
  border-radius: 16px;
  border: 1px solid transparent;
  background: var(--white);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.news-item:hover {
  background: #F1F6F3;
  border-color: #DCE8E2;
  box-shadow: var(--shadow-sm);
}
.news-main {
  flex: 1;
  min-width: 0;
}
.news-main h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
  transition: color .3s ease;
}
.news-item:hover .news-main h3 {
  color: var(--primary);
}
.news-main p {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.6;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.news-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(14, 94, 74, .1);
  padding: 4px 12px;
  border-radius: 999px;
}
.news-date {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: var(--font-num);
}
.news-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all .3s ease;
}
.news-item:hover .news-arrow {
  background: var(--primary);
  color: #fff;
  transform: translateX(2px);
}
.news-empty {
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 20px;
  padding: 60px 20px;
  text-align: center;
}
.news-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  color: #B8C4C0;
}
.news-empty p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
}
.faq-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.faq-item.active {
  border-color: rgba(14, 94, 74, .3);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color .3s ease;
  line-height: 1.5;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question .faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all .3s ease;
}
.faq-item.active .faq-toggle {
  background: var(--primary);
  color: #fff;
  transform: rotate(135deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s ease, padding .3s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 24px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.faq-side {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  text-align: center;
}
.faq-side img {
  width: 100%;
  border-radius: 14px;
  aspect-ratio: 4/3;
  object-fit: cover;
  margin-bottom: 16px;
}
.faq-side h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.faq-side p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0;
  background: var(--bg);
}
.cta-card {
  position: relative;
  background: linear-gradient(135deg, #0E5E4A 0%, #0B3D33 100%);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 122, 26, .2);
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 30px solid rgba(255, 122, 26, .1);
}
.cta-card h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cta-card p {
  font-size: 16px;
  color: rgba(255, 255, 255, .8);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-card .btn {
  position: relative;
  z-index: 1;
}
.cta-note {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  margin-top: 16px;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .85);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: block;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.footer-brand .footer-logo span {
  color: var(--accent-light);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .65);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.footer-col a,
.footer-col span {
  display: block;
  font-size: 14px;
  line-height: 2.3;
  color: rgba(255, 255, 255, .7);
  transition: color .3s ease, padding-left .3s ease;
}
.footer-col a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .15);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}
.footer-bottom .site-domain {
  font-family: var(--font-num);
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
  letter-spacing: .5px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --space-section: 60px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 60px 24px;
  }
  .hero-copy h1 {
    font-size: 36px;
  }
  .hero-visual {
    max-width: 560px;
  }
  .badges-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .tier-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .faq-side {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .main-nav {
    gap: 20px;
  }
}
@media (max-width: 768px) {
  .topbar-inner {
    justify-content: center;
  }
  .topbar-domain {
    display: none;
  }
  .topbar-tip {
    font-size: 12px;
    text-align: center;
  }
  .header-inner {
    height: 64px;
    gap: 12px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 102px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 24px;
    gap: 4px;
    box-shadow: 0 12px 32px rgba(14, 45, 38, .1);
    border-radius: 0 0 16px 16px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
    z-index: 90;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav .nav-link {
    width: 100%;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
  }
  .main-nav .nav-link:last-of-type {
    border-bottom: none;
  }
  .main-nav .nav-link::after {
    display: none;
  }
  .main-nav .nav-link.active {
    color: var(--primary);
  }
  .btn-nav {
    display: none;
  }
  .hero {
    min-height: auto;
  }
  .hero-inner {
    padding: 48px 16px;
    gap: 32px;
  }
  .hero-copy h1 {
    font-size: 30px;
    line-height: 1.3;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions .btn {
    flex: 1;
    min-width: 140px;
  }
  .hero-visual img {
    aspect-ratio: 16/10;
  }
  .hero-float-card {
    left: 16px;
    bottom: 16px;
    min-width: 190px;
    padding: 12px 16px;
    gap: 10px;
  }
  .float-ico {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
  .float-score {
    font-size: 14px;
  }
  .container {
    padding: 0 16px;
  }
  .section {
    --space-section: 48px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .badges-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .badge-item {
    padding: 16px;
    gap: 12px;
  }
  .badge-num {
    font-size: 22px;
  }
  .badge-label {
    font-size: 12px;
  }
  .preview-grid {
    grid-template-columns: 1fr;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px 16px;
  }
  .news-main h3 {
    white-space: normal;
  }
  .news-main p {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-meta {
    width: 100%;
    justify-content: space-between;
  }
  .cta-card {
    padding: 48px 20px;
    border-radius: 16px;
  }
  .cta-card h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .badges-row {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .badge-item {
    flex-direction: column;
    text-align: center;
    padding: 14px 8px;
  }
  .badge-icon {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }
  .badge-num {
    font-size: 20px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-meta {
    gap: 12px;
    flex-direction: column;
    align-items: flex-start;
  }
  .compare-table {
    min-width: 600px;
  }
  .tier-card {
    padding: 24px 20px;
  }
  .btn-lg {
    padding: 16px 32px;
    width: 100%;
  }
}

/* roulang page: article */
:root {
    --primary: #0E5E4A;
    --primary-dark: #0B3D33;
    --primary-light: #1B7A62;
    --accent: #FF7A1A;
    --accent-light: #FF9F43;
    --bg-page: #F6F7F5;
    --bg-card: #FFFFFF;
    --text-main: #232A29;
    --text-sub: #6A7572;
    --border: #E8ECE9;
    --border-light: #ECEFED;
    --success: #1F9D62;
    --warning: #E8963A;
    --danger: #D64545;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(14, 45, 38, 0.06);
    --shadow-md: 0 12px 32px rgba(14, 45, 38, 0.14);
    --shadow-nav: 0 4px 16px rgba(14, 45, 38, 0.08);
    --font-main: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-num: "DIN Alternate", "Barlow", "Inter", system-ui, sans-serif;
    --gutter: 24px;
    --section-space: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}

/* ===== 顶部信息条 ===== */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.88);
    font-size: 13px;
    height: 38px;
    display: flex;
    align-items: center;
}

.top-bar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
}

.top-bar .domain {
    font-family: var(--font-num);
    letter-spacing: 0.04em;
    color: #fff;
}

.top-bar .top-tip {
    flex: 1;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.top-bar .top-tip a {
    color: var(--accent-light);
    font-weight: 600;
}

.top-bar .top-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.top-bar .top-actions a {
    color: rgba(255,255,255,0.88);
    font-size: 13px;
}

.top-bar .top-actions a:hover {
    color: var(--accent-light);
}

.top-bar .top-actions .top-btn {
    background: var(--accent);
    color: #fff;
    padding: 3px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    transition: background 0.25s;
}

.top-bar .top-actions .top-btn:hover {
    background: var(--accent-light);
}

/* ===== 主导航 ===== */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
    box-shadow: var(--shadow-nav);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

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

.brand-icon {
    display: block;
}

.brand-text {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.brand-text em {
    font-style: normal;
    color: var(--accent);
}

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

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    padding: 8px 2px;
    position: relative;
    transition: color 0.25s;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: 1.5px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 122, 26, 0.28);
}

.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 122, 26, 0.36);
    filter: brightness(1.05);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(255, 122, 26, 0.24);
}

.btn-primary:focus-visible {
    outline: 3px solid rgba(255, 122, 26, 0.4);
    outline-offset: 2px;
}

.btn-nav {
    padding: 10px 20px;
    font-size: 14px;
    flex-shrink: 0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.2s;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--primary-dark);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle:hover {
    background: var(--bg-page);
}

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

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

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

/* ===== 面包屑 ===== */
.breadcrumb-bar {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 13px 0;
    font-size: 14px;
}

.breadcrumb-bar .container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

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

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

.breadcrumb-bar .separator {
    color: #B9C2BF;
}

.breadcrumb-bar .current {
    color: var(--text-sub);
    cursor: default;
    max-width: 320px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 文章主体 ===== */
.article-main {
    padding: var(--section-space) 0 56px;
}

.article-layout {
    max-width: 860px;
    margin: 0 auto;
}

.article-header {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px 44px 32px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.article-header h1 {
    font-size: 36px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: 0.01em;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 14px;
    color: var(--text-sub);
    border-top: 1px solid var(--border-light);
    padding-top: 18px;
}

.article-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-meta .meta-icon {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.article-meta .badge-cat {
    display: inline-block;
    background: rgba(14, 94, 74, 0.12);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 999px;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.share-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-page);
    color: var(--text-sub);
    font-size: 15px;
    transition: all 0.25s;
}

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

.share-btn:active {
    transform: translateY(0);
}

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

/* ===== 正文阅读区 ===== */
.article-body {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 48px 52px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.article-body > * + * {
    margin-top: 1.2em;
}

.article-body p {
    font-size: 16px;
    line-height: 1.9;
    color: #3A4240;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-top: 1.8em;
    margin-bottom: 0.8em;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: 1.5em;
    margin-bottom: 0.6em;
}

.article-body ul {
    padding-left: 4px;
}

.article-body ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-body ul li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

.article-body ol {
    padding-left: 4px;
    counter-reset: art-ol;
}

.article-body ol li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 8px;
    line-height: 1.8;
    counter-increment: art-ol;
}

.article-body ol li::before {
    content: counter(art-ol);
    position: absolute;
    left: 0;
    top: 5px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(14, 94, 74, 0.12);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-body blockquote {
    background: rgba(14, 94, 74, 0.06);
    border-left: 4px solid var(--primary);
    border-radius: 0 14px 14px 0;
    padding: 20px 24px;
    color: var(--text-sub);
    font-style: italic;
}

.article-body blockquote p {
    color: var(--text-sub);
}

.article-body img {
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    margin: 24px 0;
}

.article-body a {
    color: var(--primary);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body a:hover {
    color: var(--accent);
}

.article-body table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-page);
    border-radius: 14px;
    overflow: hidden;
    margin: 20px 0;
}

.article-body table th {
    background: var(--primary-dark);
    color: #fff;
    font-weight: 600;
    padding: 12px 18px;
    text-align: left;
    font-size: 14px;
}

.article-body table td {
    padding: 12px 18px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.article-body table tr:last-child td {
    border-bottom: none;
}

.article-body table tr:hover td {
    background: rgba(14, 94, 74, 0.04);
}

.article-body code {
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px 8px;
    font-size: 14px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    color: var(--primary-dark);
}

.article-empty {
    padding: 60px 40px;
    text-align: center;
}

.article-empty .empty-icon {
    font-size: 52px;
    display: block;
    margin-bottom: 16px;
}

.article-empty p {
    font-size: 17px;
    color: var(--text-sub);
    margin-bottom: 20px;
}

/* ===== 相关推荐 ===== */
.related-section {
    max-width: 860px;
    margin: 0 auto;
}

.related-section h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.related-section h2::before {
    content: '';
    width: 6px;
    height: 24px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--accent), var(--accent-light));
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #E2E8E5;
}

.related-card .card-img {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.related-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.related-card .card-body {
    padding: 18px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-card h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card:hover h3 {
    color: var(--primary);
}

.related-card .card-summary {
    font-size: 13px;
    color: var(--text-sub);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}

.related-card .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: #9AA5A1;
    margin-top: auto;
    padding-top: 6px;
}

.related-card .card-tag {
    display: inline-block;
    background: rgba(255, 122, 26, 0.12);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
}

.back-link-wrap {
    margin-top: 32px;
    text-align: center;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-sub);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.25s;
}

.back-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(14, 94, 74, 0.04);
    transform: translateX(-4px);
}

.back-link:active {
    transform: translateX(-4px) scale(0.98);
}

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

/* ===== 页脚 ===== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.85);
    margin-top: 40px;
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 44px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.footer-brand .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}

.footer-brand .footer-logo span {
    color: var(--accent-light);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.7);
    max-width: 300px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.footer-col a,
.footer-col span {
    display: block;
    font-size: 14px;
    line-height: 2.2;
    color: rgba(255,255,255,0.7);
    transition: color 0.25s;
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
}

.footer-bottom .site-domain {
    font-family: var(--font-num);
    letter-spacing: 0.03em;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .container {
        --gutter: 20px;
    }

    .main-nav {
        gap: 18px;
    }

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

@media (max-width: 768px) {
    :root {
        --section-space: 48px;
    }

    .top-bar .top-tip {
        display: none;
    }

    .top-bar .container {
        justify-content: space-between;
    }

    .main-nav {
        position: fixed;
        top: 110px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px 28px;
        box-shadow: var(--shadow-nav);
        border-bottom: 1px solid var(--border);
        gap: 4px;
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
        z-index: 99;
    }

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

    .main-nav .nav-link {
        width: 100%;
        padding: 12px 8px;
        font-size: 16px;
        border-bottom: 1px solid var(--border-light);
    }

    .main-nav .nav-link::after {
        display: none;
    }

    .main-nav .nav-link.active {
        color: var(--accent);
        background: rgba(255, 122, 26, 0.06);
        border-radius: 8px;
    }

    .nav-toggle {
        display: flex;
    }

    .btn-nav {
        display: none;
    }

    .article-header {
        padding: 28px 24px 24px;
    }

    .article-header h1 {
        font-size: 28px;
        line-height: 1.35;
    }

    .article-body {
        padding: 32px 24px;
    }

    .article-body p {
        font-size: 15px;
        line-height: 1.85;
    }

    .article-body h2 {
        font-size: 22px;
    }

    .article-body h3 {
        font-size: 18px;
    }

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

    .breadcrumb-bar .current {
        max-width: 200px;
    }

    .article-meta {
        gap: 12px;
    }

    .article-share {
        margin-left: 0;
        width: 100%;
        justify-content: flex-start;
    }

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

    .footer-col h4 {
        margin-bottom: 12px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 520px) {
    .container {
        --gutter: 16px;
    }

    .top-bar .top-actions span {
        display: none;
    }

    .article-header h1 {
        font-size: 24px;
    }

    .article-body {
        padding: 24px 18px;
    }

    .article-body blockquote {
        padding: 16px 18px;
    }

    .article-body table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .related-card .card-body {
        padding: 16px;
    }

    .back-link {
        width: 100%;
        justify-content: center;
    }
}

/* roulang page: category2 */
:root {
  --primary: #0E5E4A;
  --primary-dark: #0B3D33;
  --primary-light: #178B6B;
  --secondary: #FF7A1A;
  --secondary-light: #FF9F43;
  --bg: #F6F7F5;
  --card: #FFFFFF;
  --text: #232A29;
  --text-light: #6A7572;
  --border: #E8ECE9;
  --radius-large: 24px;
  --radius-card: 18px;
  --radius-btn: 10px;
  --shadow-card: 0 2px 8px rgba(14, 45, 38, 0.06);
  --shadow-hover: 0 12px 32px rgba(14, 45, 38, 0.14);
  --spacing-section: 80px;
  --font-stack: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-stack); background: var(--bg); color: var(--text); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header & Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(14, 45, 38, 0.03);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-icon { border-radius: 12px; box-shadow: 0 2px 8px rgba(14, 94, 74, 0.25); }
.brand-text { font-size: 20px; font-weight: 800; color: var(--primary-dark); letter-spacing: 0.5px; line-height: 1.2; display: flex; flex-direction: column; }
.brand-text em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--secondary); letter-spacing: 1px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link { padding: 8px 18px; font-size: 15px; font-weight: 500; color: var(--text); border-radius: 8px; position: relative; transition: color 0.25s, background 0.25s; }
.nav-link:hover { color: var(--primary); background: rgba(14, 94, 74, 0.06); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { content: ""; position: absolute; left: 18px; right: 18px; bottom: 0; height: 3px; background: linear-gradient(90deg, var(--secondary), var(--secondary-light)); border-radius: 3px 3px 0 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: var(--radius-btn); transition: all 0.3s ease; text-align: center; cursor: pointer; }
.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: #fff; padding: 12px 28px; font-size: 15px; box-shadow: 0 4px 16px rgba(255, 122, 26, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 122, 26, 0.4); filter: brightness(1.05); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(255, 122, 26, 0.3); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-nav { padding: 9px 22px; font-size: 14px; }
.btn-outline { border: 1.5px solid rgba(255,255,255,0.9); color: #fff; padding: 11px 28px; font-size: 15px; background: transparent; }
.btn-outline:hover { background: #fff; color: var(--primary-dark); transform: translateY(-2px); }
.btn-outline:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.btn-lg { padding: 14px 40px; font-size: 16px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; border-radius: 10px; align-items: center; justify-content: center; background: var(--bg); }
.nav-toggle span { width: 20px; height: 2px; background: var(--primary-dark); border-radius: 2px; transition: all 0.3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Category Hero ===== */
.category-hero {
  position: relative; padding: 90px 0 80px; background: linear-gradient(135deg, #0E5E4A 0%, #0B3D33 100%); overflow: hidden;
}
.category-hero::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.2; }
.category-hero::after { content: ""; position: absolute; width: 400px; height: 400px; border-radius: 50%; border: 2px solid rgba(255,255,255,0.08); top: -120px; right: -80px; }
.hero-inner { position: relative; z-index: 2; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: #fff; font-size: 13px; font-weight: 600; border-radius: 999px; padding: 6px 16px; margin-bottom: 20px; letter-spacing: 1px; }
.hero-tag::before { content: ""; width: 6px; height: 6px; background: var(--secondary); border-radius: 50%; }
.category-hero h1 { color: #fff; font-size: 44px; line-height: 1.2; font-weight: 800; margin-bottom: 18px; max-width: 720px; }
.category-hero h1 span { color: var(--secondary-light); }
.category-hero .hero-desc { color: rgba(255,255,255,0.82); font-size: 17px; line-height: 1.8; max-width: 620px; margin-bottom: 32px; }

/* ===== Hero Stats ===== */
.stats-strip { position: relative; z-index: 3; margin-top: -40px; }
.stats-card { background: var(--card); border-radius: var(--radius-large); box-shadow: var(--shadow-hover); display: grid; grid-template-columns: repeat(3, 1fr); padding: 32px 24px; border: 1px solid var(--border); }
.stat-item { text-align: center; padding: 8px 16px; position: relative; }
.stat-item + .stat-item::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 1px; height: 44px; background: var(--border); }
.stat-icon { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; font-size: 20px; }
.stat-icon.green { background: linear-gradient(135deg, #0E5E4A, #178B6B); color: #fff; }
.stat-icon.orange { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: #fff; }
.stat-num { font-size: 32px; font-weight: 800; color: var(--primary-dark); line-height: 1.1; font-family: "DIN Alternate", "Barlow", "Inter", sans-serif; }
.stat-label { font-size: 13px; color: var(--text-light); margin-top: 4px; }

/* ===== Section Common ===== */
.section { padding: var(--spacing-section) 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head .section-tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary); background: rgba(14, 94, 74, 0.08); border-radius: 999px; padding: 5px 14px; letter-spacing: 1px; margin-bottom: 12px; }
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 12px; }
.section-head p { color: var(--text-light); font-size: 15px; line-height: 1.7; }

/* ===== Tier Section ===== */
.tier-section { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.tier-cards { display: flex; flex-direction: column; gap: 20px; max-width: 920px; margin: 0 auto; }
.tier-card { display: flex; align-items: stretch; background: var(--bg); border-radius: var(--radius-card); border: 1px solid var(--border); overflow: hidden; transition: box-shadow 0.3s, transform 0.3s; }
.tier-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.tier-card.featured { border: 2px solid var(--secondary); background: #FFF8F2; }
.tier-card.highlight { border: 2px solid var(--primary); }
.tier-side { display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 28px 30px; background: rgba(14, 94, 74, 0.05); min-width: 200px; border-right: 1px solid var(--border); }
.tier-card.featured .tier-side { background: rgba(255, 122, 26, 0.08); border-right-color: rgba(255, 122, 26, 0.15); }
.tier-badge { display: inline-block; font-size: 12px; font-weight: 700; border-radius: 999px; padding: 3px 12px; margin-bottom: 12px; letter-spacing: 0.5px; }
.tier-badge.hot { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: #fff; }
.tier-badge.top { background: linear-gradient(135deg, #0E5E4A, #178B6B); color: #fff; }
.tier-badge.base { background: #E8ECE9; color: var(--text-light); }
.tier-name { font-size: 20px; font-weight: 800; color: var(--text); }
.tier-price { font-size: 14px; color: var(--text-light); margin-top: 4px; }
.tier-body { flex: 1; padding: 28px 30px; }
.tier-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.tier-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 18px; }
.tier-list li { position: relative; padding-left: 22px; font-size: 14px; color: var(--text); line-height: 1.6; }
.tier-list li::before { content: ""; position: absolute; left: 0; top: 7px; width: 12px; height: 7px; border-left: 2px solid var(--secondary); border-bottom: 2px solid var(--secondary); transform: rotate(-45deg); }
.tier-cta { margin-top: 18px; }
.tier-cta .btn { padding: 8px 20px; font-size: 14px; }

/* ===== Compare Table ===== */
.compare-section { margin-top: 0; }
.compare-wrap { background: var(--card); border-radius: var(--radius-large); box-shadow: var(--shadow-card); border: 1px solid var(--border); overflow: hidden; }
.compare-scroll { overflow-x: auto; }
.compare-table { width: 100%; min-width: 640px; border-collapse: collapse; }
.compare-table thead th { background: var(--primary-dark); color: #fff; font-size: 14px; font-weight: 600; padding: 16px 20px; text-align: center; letter-spacing: 0.5px; }
.compare-table thead th:first-child { text-align: left; font-size: 15px; }
.compare-table thead th.highlight-col { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.compare-table tbody td { padding: 15px 20px; border-bottom: 1px solid var(--border); font-size: 14px; text-align: center; color: var(--text); }
.compare-table tbody td:first-child { text-align: left; font-weight: 600; color: var(--text); background: #FBFCFB; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: rgba(14, 94, 74, 0.03); }
.td-check { color: var(--primary); font-size: 18px; font-weight: 700; }
.td-dash { color: #C3CBC7; font-size: 18px; }
.td-badge { display: inline-block; background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: #fff; font-size: 12px; font-weight: 600; border-radius: 999px; padding: 2px 12px; }
.compare-note { padding: 16px 24px; background: #F8FAF9; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 8px; }
.compare-note::before { content: "ℹ"; }
.compare-scroll-hint { display: none; font-size: 12px; color: var(--text-light); padding: 8px 16px; background: #F0F4F2; border-radius: 8px; margin-bottom: 12px; }

/* ===== Scenario Cards ===== */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card { background: var(--card); border-radius: var(--radius-card); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow-card); transition: box-shadow 0.3s, transform 0.3s; }
.scenario-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.scenario-card .sc-img { position: relative; height: 170px; overflow: hidden; }
.scenario-card .sc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.scenario-card:hover .sc-img img { transform: scale(1.03); }
.sc-img-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11, 61, 51, 0) 0%, rgba(11, 61, 51, 0.4) 100%); }
.sc-icon { position: absolute; left: 20px; bottom: -20px; width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.2); z-index: 2; }
.sc-icon.green { background: linear-gradient(135deg, #0E5E4A, #178B6B); }
.sc-icon.orange { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); }
.sc-body { padding: 28px 24px 24px; }
.sc-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.sc-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.sc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.sc-tags span { font-size: 12px; background: #F0F4F2; color: var(--primary); border-radius: 999px; padding: 3px 12px; font-weight: 500; }

/* ===== Process Section ===== */
.process-section { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; max-width: 1000px; margin: 0 auto; }
.process-step { text-align: center; position: relative; padding: 24px 16px; }
.process-step::after { content: ""; position: absolute; top: 50%; left: calc(100% - 8px); width: 32px; height: 2px; background: var(--border); }
.process-step:last-child::after { display: none; }
.step-num { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; font-size: 18px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; box-shadow: 0 4px 12px rgba(14, 94, 74, 0.25); }
.step-num.orange { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); box-shadow: 0 4px 12px rgba(255, 122, 26, 0.25); }
.process-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-list { background: var(--card); border-radius: var(--radius-large); border: 1px solid var(--border); box-shadow: var(--shadow-card); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 22px 26px; font-size: 16px; font-weight: 600; color: var(--text); text-align: left; transition: background 0.25s; }
.faq-question:hover { background: #F8FAF9; }
.faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; border-radius: 8px; }
.faq-qmark { color: var(--secondary); font-weight: 800; margin-right: 10px; }
.faq-toggle { width: 28px; height: 28px; border-radius: 50%; background: #F0F4F2; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; font-weight: 600; transition: all 0.3s; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-toggle { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 26px 22px; font-size: 14px; color: var(--text-light); line-height: 1.8; }

/* ===== CTA Section ===== */
.cta-section { padding: 70px 0; background: linear-gradient(135deg, #0E5E4A, #0B3D33); position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(255,122,26,0.18) 0%, transparent 70%); top: -80px; right: 10%; }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.cta-inner h2 span { color: var(--secondary-light); }
.cta-inner p { color: rgba(255,255,255,0.8); font-size: 15px; line-height: 1.7; margin-bottom: 32px; }
.cta-note { margin-top: 18px; font-size: 13px; color: rgba(255,255,255,0.55); }

/* ===== Footer ===== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.85); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-logo { font-size: 20px; font-weight: 800; color: #fff; display: flex; flex-direction: column; line-height: 1.2; }
.footer-logo span { font-size: 13px; color: var(--secondary-light); font-weight: 600; letter-spacing: 1px; }
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 14px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 13px; color: rgba(255,255,255,0.6); line-height: 2.3; transition: color 0.25s; }
.footer-col a:hover { color: var(--secondary-light); }
.footer-col span { display: block; font-size: 13px; color: rgba(255,255,255,0.6); line-height: 2.2; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.5); }
.site-domain { font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.6); font-family: "DIN Alternate", "Barlow", monospace; letter-spacing: 0.5px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: #fff; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-hover); gap: 6px; z-index: 99; }
  .main-nav.open .nav-link { padding: 12px 16px; font-size: 16px; }
  .nav-toggle { display: flex; }
  .btn-nav { display: none; }
  .tier-list { grid-template-columns: 1fr; }
  .tier-side { min-width: 160px; padding: 24px 20px; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .process-step::after { display: none; }
  .stats-card { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --spacing-section: 48px; }
  .container { padding: 0 16px; }
  .category-hero { padding: 60px 0 56px; }
  .category-hero h1 { font-size: 32px; }
  .hero-desc { font-size: 15px; }
  .stats-card { grid-template-columns: repeat(3, 1fr); padding: 20px 12px; }
  .stat-item { padding: 8px 8px; }
  .stat-num { font-size: 24px; }
  .stat-icon { width: 36px; height: 36px; font-size: 16px; }
  .section-head h2 { font-size: 26px; }
  .tier-card { flex-direction: column; }
  .tier-side { border-right: none; border-bottom: 1px solid var(--border); padding: 20px; min-width: 0; }
  .tier-body { padding: 20px; }
  .tier-list { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .compare-scroll-hint { display: block; }
  .compare-section { margin-top: 0; }
  .cta-inner h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 520px) {
  .stats-card { grid-template-columns: repeat(3, 1fr); }
  .stat-num { font-size: 20px; }
  .stat-label { font-size: 12px; }
  .stat-icon { width: 32px; height: 32px; font-size: 14px; margin-bottom: 6px; }
  .brand-text { font-size: 18px; }
  .brand-icon { width: 34px; height: 34px; }
  .category-hero h1 { font-size: 28px; }
  .faq-question { padding: 18px 18px; font-size: 15px; }
  .faq-answer-inner { padding: 0 18px 18px; }
  .tier-cta .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
  --primary: #0E5E4A;
  --primary-dark: #0B3D33;
  --primary-light: #14806A;
  --secondary: #FF7A1A;
  --secondary-light: #FF9F43;
  --bg: #F6F7F5;
  --card: #FFFFFF;
  --text: #232A29;
  --text-weak: #6A7572;
  --border: #E8ECE9;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(14, 45, 38, 0.06);
  --shadow-md: 0 6px 20px rgba(14, 45, 38, 0.1);
  --shadow-lg: 0 12px 32px rgba(14, 45, 38, 0.14);
  --transition: 0.3s ease;
  --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
input, select, textarea { font-family: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.section-head h2 { font-size: 32px; line-height: 1.25; font-weight: 700; color: var(--text); position: relative; }
.section-head h2::after { content: ''; display: block; width: 48px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--secondary), var(--secondary-light)); margin-top: 12px; }
.section-head p { color: var(--text-weak); max-width: 520px; font-size: 15px; }
.section-link { color: var(--primary); font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.section-link i { transition: transform 0.3s ease; }
.section-link:hover { color: var(--secondary); }
.section-link:hover i { transform: translateX(4px); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 12px; font-size: 15px; font-weight: 600;
  transition: all 0.3s ease; white-space: nowrap; line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
  color: #fff; box-shadow: 0 4px 16px rgba(255, 122, 26, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 122, 26, 0.4); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(255, 122, 26, 0.3); }
.btn-primary:focus-visible { outline: 3px solid rgba(255, 122, 26, 0.4); outline-offset: 2px; }
.btn-outline-light {
  background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.7);
}
.btn-outline-light:hover { background: #fff; color: var(--primary-dark); transform: translateY(-2px); }
.btn-outline-light:active { transform: translateY(0); }
.btn-outline-light:focus-visible { outline: 3px solid rgba(255,255,255,0.5); outline-offset: 2px; }
.btn-outline {
  background: transparent; color: var(--primary); border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-outline:focus-visible { outline: 3px solid rgba(14, 94, 74, 0.3); outline-offset: 2px; }
.btn-lg { padding: 16px 40px; font-size: 17px; border-radius: 14px; }

.topbar {
  background: var(--primary-dark); color: rgba(255,255,255,0.85); font-size: 13px;
  height: 38px; display: flex; align-items: center;
}
.topbar-inner { display: flex; align-items: center; gap: 24px; width: 100%; }
.topbar-domain { font-family: "SF Mono", "Cascadia Code", Consolas, monospace; letter-spacing: 0.5px; }
.topbar-tip { flex: 1; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: rgba(255,255,255,0.9); }
.topbar-tip i { color: var(--secondary-light); margin-right: 6px; }
.topbar-link { color: #fff; font-weight: 600; padding: 4px 16px; border-radius: 999px; background: rgba(255,122,26,0.25); border: 1px solid rgba(255,122,26,0.4); font-size: 12px; transition: all 0.3s ease; white-space: nowrap; }
.topbar-link:hover { background: rgba(255,122,26,0.45); color: #fff; }
.topbar-link:focus-visible { outline: 2px solid rgba(255,122,26,0.5); outline-offset: 2px; }

.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95);
  border-bottom: 1px solid var(--border); backdrop-filter: blur(12px); transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 16px rgba(14, 45, 38, 0.08); }
.header-inner { display: flex; align-items: center; height: 72px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0; }
.brand-text { font-size: 22px; font-weight: 800; color: var(--text); letter-spacing: -0.3px; }
.brand-text em { font-style: normal; color: var(--secondary); font-weight: 800; }
.brand:hover .brand-text { color: var(--primary); }
.brand:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; border-radius: 4px; }
.main-nav { display: flex; gap: 6px; margin-left: auto; }
.nav-link {
  font-size: 15px; font-weight: 500; color: var(--text); padding: 8px 18px;
  border-radius: 8px; position: relative; transition: color 0.3s ease, background 0.3s ease;
}
.nav-link::after {
  content: ''; position: absolute; left: 18px; right: 18px; bottom: 0; height: 3px;
  border-radius: 3px 3px 0 0; background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
  opacity: 0; transform: scaleX(0.6); transition: opacity 0.3s ease, transform 0.3s ease;
}
.nav-link:hover { color: var(--primary); background: #F1F6F3; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { opacity: 1; transform: scaleX(1); }
.nav-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 8px; }
.btn-nav { padding: 10px 22px; font-size: 14px; flex-shrink: 0; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--border);
  background: #fff; padding: 10px; flex-shrink: 0;
}
.nav-toggle span { display: block; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav-toggle:hover { border-color: var(--primary); }
.nav-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(14,94,74,0.92) 0%, rgba(11,61,51,0.95) 60%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff; padding: 72px 0 0; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.08); top: -120px; right: -100px;
}
.hero::after {
  content: ''; position: absolute; width: 600px; height: 600px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.05); bottom: -200px; right: -80px;
}
.hero-inner { position: relative; z-index: 1; }
.breadcrumb { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 28px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--secondary-light); }
.breadcrumb .sep { color: rgba(255,255,255,0.35); }
.breadcrumb .current { color: rgba(255,255,255,0.95); font-weight: 500; }
.hero-content { max-width: 680px; padding-bottom: 56px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px; background: rgba(255,122,26,0.2);
  border: 1px solid rgba(255,122,26,0.45); color: #FFC38A; font-size: 13px;
  padding: 4px 16px; border-radius: 999px; margin-bottom: 20px; font-weight: 500;
}
.hero h1 {
  font-size: 44px; line-height: 1.2; font-weight: 800; margin-bottom: 20px; letter-spacing: -0.5px;
}
.hero h1 .accent {
  background: linear-gradient(180deg, transparent 68%, rgba(255,122,26,0.35) 68%);
  padding: 0 2px;
}
.hero-content > p { font-size: 17px; color: rgba(255,255,255,0.85); line-height: 1.8; margin-bottom: 32px; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14);
  border-radius: 24px 24px 0 0; padding: 28px 32px; backdrop-filter: blur(8px);
  border-bottom: none;
}
.stat-card { display: flex; align-items: center; gap: 14px; }
.stat-card + .stat-card { border-left: 1px solid rgba(255,255,255,0.12); padding-left: 28px; }
.stat-icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  background: rgba(255,255,255,0.12); display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--secondary-light);
}
.stat-num { font-size: 28px; font-weight: 800; line-height: 1.1; font-family: "Barlow", "Inter", "DIN Alternate", sans-serif; color: #fff; }
.stat-num .suffix { font-size: 18px; color: var(--secondary-light); margin-left: 1px; }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 2px; }

.features-section { padding-top: 80px; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--card); border-radius: var(--radius-md); padding: 32px 24px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: #D5E2DA; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
}
.feature-icon.green { background: rgba(14,94,74,0.1); color: var(--primary); }
.feature-icon.orange { background: rgba(255,122,26,0.12); color: var(--secondary); }
.feature-icon.teal { background: rgba(20,128,106,0.1); color: var(--primary-light); }
.feature-icon.amber { background: rgba(255,159,67,0.15); color: #E86F0A; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

.tags-section { padding-top: 40px; }
.tags-card {
  background: var(--card); border-radius: var(--radius-lg); padding: 48px 40px;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.tags-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.tags-card > p { color: var(--text-weak); font-size: 15px; margin-bottom: 28px; }
.tags-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.tag-item {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; border-radius: 999px;
  background: #F1F6F3; color: var(--primary); font-size: 14px; font-weight: 500;
  border: 1px solid #DCE8E1; transition: all 0.3s ease;
}
.tag-item i { font-size: 13px; color: var(--secondary); }
.tag-item:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(14,94,74,0.2); }
.tag-item:hover i { color: var(--secondary-light); }
.tag-item:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.scenario-section { padding-top: 80px; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 300px; border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(180deg, rgba(11,61,51,0.1) 0%, rgba(11,61,51,0.85) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff; padding: 32px; box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.scenario-card:nth-child(2) { background: linear-gradient(180deg, rgba(11,61,51,0.1) 0%, rgba(11,61,51,0.85) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat; }
.scenario-card:nth-child(3) { background: linear-gradient(180deg, rgba(11,61,51,0.1) 0%, rgba(11,61,51,0.85) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat; }
.scenario-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.scenario-card:hover .scenario-icon { transform: scale(1.08); }
.scenario-icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--secondary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 20px;
  transition: transform 0.3s ease;
}
.scenario-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.scenario-card p { font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.7; }

.steps-section { padding-top: 80px; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.steps-grid::before {
  content: ''; position: absolute; top: 36px; left: 8%; right: 8%;
  height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary)); opacity: 0.25;
}
.step-card {
  position: relative; text-align: center; padding: 0 12px;
}
.step-num {
  width: 72px; height: 72px; border-radius: 50%; background: var(--card);
  border: 2px solid var(--primary); display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 24px; font-weight: 800; color: var(--primary);
  box-shadow: 0 0 0 8px rgba(14,94,74,0.06); transition: all 0.3s ease;
  position: relative; z-index: 1;
}
.step-card:hover .step-num { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 0 0 8px rgba(14,94,74,0.12); transform: scale(1.05); }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--text-weak); line-height: 1.65; }

.cards-section { padding-top: 80px; }
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-card {
  background: var(--card); border-radius: var(--radius-md); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex; flex-direction: column;
}
.content-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.content-card:hover .card-cover img { transform: scale(1.04); }
.card-cover { position: relative; height: 180px; overflow: hidden; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card-cover .cover-tag {
  position: absolute; top: 14px; left: 14px; background: var(--secondary); color: #fff;
  font-size: 12px; font-weight: 600; padding: 3px 12px; border-radius: 999px; box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.card-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 18px; font-weight: 700; line-height: 1.45; margin-bottom: 10px; }
.card-body h3 a { color: var(--text); }
.card-body h3 a:hover { color: var(--primary); }
.card-body h3 a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-weak); border-top: 1px solid var(--border); padding-top: 14px; }
.card-meta .time { display: inline-flex; align-items: center; gap: 5px; }
.card-meta .cat { margin-left: auto; color: var(--primary); font-weight: 500; }
.card-meta .cat:hover { color: var(--secondary); }
.load-more-wrap { text-align: center; margin-top: 40px; }

.faq-section { padding-top: 80px; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card); border-radius: var(--radius-md); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); margin-bottom: 16px; overflow: hidden; transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-md); }
.faq-q {
  width: 100%; display: flex; align-items: center; gap: 16px; padding: 22px 24px;
  font-size: 16px; font-weight: 600; text-align: left; transition: background 0.3s ease;
}
.faq-q .q-mark { color: var(--secondary); font-weight: 800; font-size: 18px; }
.faq-q:hover { background: #F9FBF9; }
.faq-q:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; border-radius: 16px; }
.faq-q .faq-toggle {
  margin-left: auto; width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
  background: #F1F6F3; color: var(--primary); transition: all 0.3s ease;
}
.faq-item.active .faq-q .faq-toggle { background: var(--secondary); color: #fff; transform: rotate(45deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 24px;
}
.faq-item.active .faq-a { max-height: 600px; padding: 0 24px 20px; }
.faq-a p { font-size: 14px; color: var(--text-weak); line-height: 1.8; padding-left: 34px; }

.cta-section { padding-top: 80px; padding-bottom: 80px; }
.cta-card {
  position: relative; background: linear-gradient(135deg, #0E5E4A 0%, #0B3D33 100%);
  border: 5px solid rgba(255,255,255,0.08); background-clip: padding-box;
  border-radius: var(--radius-lg); overflow: hidden; padding: 64px 48px;
  text-align: center; color: #fff; box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%;
  background: rgba(255,122,26,0.08); top: -90px; right: -60px;
}
.cta-card::after {
  content: ''; position: absolute; width: 200px; height: 200px; border-radius: 50%;
  background: rgba(255,255,255,0.04); bottom: -70px; left: -50px;
}
.cta-card h2 { font-size: 36px; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.cta-card h2 .accent { color: var(--secondary-light); }
.cta-card p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; }
.cta-card .btn { position: relative; z-index: 2; }
.cta-note { position: relative; z-index: 2; font-size: 13px; color: rgba(255,255,255,0.55); margin-top: 16px; }

.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.85); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-logo { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 14px; display: inline-block; }
.footer-logo span { color: var(--secondary-light); }
.footer-logo:hover { color: var(--secondary-light); }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 300px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-col a, .footer-col span { display: block; font-size: 13px; line-height: 2.4; color: rgba(255,255,255,0.6); }
.footer-col a:hover { color: var(--secondary-light); padding-left: 4px; }
.footer-col a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 4px; border-radius: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12); padding: 24px 0; font-size: 13px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: rgba(255,255,255,0.5);
}
.footer-bottom .site-domain { font-family: "SF Mono", Consolas, monospace; color: rgba(255,255,255,0.35); }

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 38px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .stat-card + .stat-card { border-left: none; padding-left: 0; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
  .steps-grid::before { display: none; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 26px; }
  .topbar-inner { gap: 12px; }
  .topbar-tip { display: none; }
  .site-header.scrolled { box-shadow: none; }
  .header-inner { height: 64px; gap: 12px; }
  .brand-text { font-size: 19px; }
  .brand-icon { width: 34px; height: 34px; border-radius: 8px; }
  .main-nav {
    position: fixed; top: 0; right: 0; bottom: 0; width: 280px; background: #fff;
    box-shadow: -4px 0 24px rgba(14,45,38,0.12); flex-direction: column; padding: 80px 24px 24px; gap: 4px;
    transform: translateX(100%); transition: transform 0.35s ease; z-index: 98;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link { font-size: 16px; padding: 14px 16px; border-radius: 10px; }
  .nav-link::after { display: none; }
  .nav-toggle { display: flex; }
  .btn-nav { display: none; }
  .hero { padding-top: 48px; }
  .hero h1 { font-size: 30px; }
  .hero-content > p { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px 12px; padding: 24px 20px; }
  .stat-card { flex-direction: column; align-items: flex-start; gap: 8px; }
  .stat-num { font-size: 24px; }
  .tags-card { padding: 32px 20px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 18px; }
  .scenario-card { min-height: 240px; }
  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  .steps-grid { grid-template-columns: 1fr; gap: 28px; }
  .cards-grid { grid-template-columns: 1fr; gap: 18px; }
  .faq-q { padding: 18px 16px; font-size: 15px; }
  .faq-a { padding: 0 16px; }
  .faq-item.active .faq-a { padding: 0 16px 18px; }
  .cta-card { padding: 48px 24px; border-radius: var(--radius-md); }
  .cta-card h2 { font-size: 27px; }
  .cta-card .btn { display: block; width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 27px; letter-spacing: -0.3px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 16px 10px; }
}