/* roulang page: index */
:root {
  --primary: #0B5D68;
  --primary-dark: #084A54;
  --accent: #F28C5A;
  --accent-dark: #E0763F;
  --bg: #F6F8F9;
  --text: #1F2A2E;
  --text-sub: #5A6B73;
  --border: #E3EAEE;
  --shadow: 0 4px 20px rgba(11, 40, 50, 0.06);
  --shadow-hover: 0 12px 32px rgba(11, 40, 50, 0.12);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-pill: 999px;
  --radius-img: 20px;
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  outline: none;
}

.container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  transition: var(--transition);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 3px solid rgba(242, 140, 90, 0.45);
  box-shadow: 0 0 0 2px #fff;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(242, 140, 90, 0.28);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(242, 140, 90, 0.35);
}

.btn-primary:active {
  background: #C95F2C;
  transform: translateY(0);
}

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

.btn-outline-primary:hover {
  background: rgba(11, 93, 104, 0.08);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.8);
  color: #fff;
}

.btn-ghost:hover {
  background: #fff;
  color: var(--primary-dark);
  border-color: #fff;
  transform: translateY(-1px);
}

.btn-lg {
  height: 52px;
  padding: 0 34px;
  font-size: 16px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(11px);
  -webkit-backdrop-filter: blur(11px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(11, 40, 50, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

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

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, #14818F 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 10px rgba(11, 93, 104, 0.25);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
  line-height: 1.2;
}

.logo-text span {
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.5px;
  border-radius: 8px;
}

.main-nav a:hover {
  color: var(--primary);
  background: rgba(11, 93, 104, 0.06);
}

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

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-search {
  display: flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  height: 40px;
  border-radius: 8px;
  padding: 0 6px 0 12px;
  width: 190px;
  transition: var(--transition);
}

.nav-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 93, 104, 0.12);
}

.nav-search i {
  color: var(--text-sub);
  font-size: 14px;
}

.nav-search input {
  border: none;
  background: transparent;
  height: 100%;
  width: 100%;
  padding: 0 8px;
  font-size: 14px;
}

.nav-search input::placeholder {
  color: #9AAAB2;
}

.nav-link-btn {
  background: none;
  border: none;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  padding: 6px 4px;
}

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

.header-cta {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
  border-radius: 8px;
}

.navbar-toggler-custom {
  background: none;
  border: 1px solid var(--border);
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 18px;
  color: var(--text);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

.mobile-nav-wrap {
  display: none;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 180px 0 100px;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(8, 74, 84, 0.96) 10%, rgba(11, 93, 104, 0.88) 48%, rgba(11, 93, 104, 0.58) 100%);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-badge i {
  color: var(--accent);
  font-size: 12px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero-sub {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.85;
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  padding: 30px 0;
}

.hero-card {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px);
  border-radius: 24px;
  padding: 32px 30px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.2);
  max-width: 400px;
  margin-left: auto;
}

.hero-card-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-card-title i {
  color: var(--accent);
}

.hero-card-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-card-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-card-item .icon-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(242, 140, 90, 0.25);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.hero-card-item .info {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

.hero-card-item .info strong {
  display: block;
  font-size: 14px;
  color: #fff;
  font-weight: 600;
}

.hero-float-badge {
  position: absolute;
  bottom: 85px;
  left: -20px;
  z-index: 3;
  background: #fff;
  border-radius: 16px;
  padding: 16px 22px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-float-badge .value {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.hero-float-badge .label {
  font-size: 12px;
  color: var(--text-sub);
}

/* ===== Stats ===== */
.stats-section {
  padding: 0;
  position: relative;
  z-index: 5;
}

.stats-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 36px 32px;
  margin-top: -52px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 12px 8px;
}

.stat-item .num {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-family: 'Inter', 'Roboto', -apple-system, sans-serif;
  letter-spacing: 0.5px;
}

.stat-item .num sup {
  font-size: 20px;
  color: var(--accent);
  top: -0.8em;
}

.stat-item .label {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 6px;
  letter-spacing: 0.5px;
}

/* ===== Section common ===== */
.section-block {
  padding: 100px 0;
}

.section-head {
  max-width: 680px;
  margin-bottom: 56px;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(11, 93, 104, 0.07);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.section-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head .subtitle {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ===== Feature cards ===== */
.features-section {
  background: var(--bg);
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: rgba(11, 93, 104, 0.25);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(11, 93, 104, 0.1), rgba(11, 93, 104, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 22px;
  margin-bottom: 20px;
}

.feature-icon.orange {
  background: linear-gradient(135deg, rgba(242, 140, 90, 0.16), rgba(242, 140, 90, 0.05));
  color: var(--accent-dark);
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 14px;
}

.feature-card .more {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-card .more i {
  transition: transform 0.2s;
}

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

.feature-card.wide {
  padding: 36px;
}

.feature-card.wide h3 {
  font-size: 24px;
}

.feature-card.wide .feature-icon {
  width: 60px;
  height: 60px;
  font-size: 26px;
}

/* ===== Scenarios ===== */
.scenarios-section {
  background: #fff;
}

.scenario-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-img);
  overflow: hidden;
  height: 100%;
  background: #fff;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.scenario-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.scenario-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 74, 84, 0.25) 100%);
}

.scenario-img .type-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(6px);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
}

.scenario-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.scenario-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.scenario-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 16px;
}

/* ===== Cases ===== */
.cases-section {
  background: var(--bg);
}

.case-card-large {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
}

.case-card-large:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.case-large-media {
  height: 260px;
  background: url('/assets/images/coverpic/cover-3.webp') center center / cover no-repeat;
  position: relative;
}

.case-large-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(8, 74, 84, 0.5) 100%);
}

.case-large-content {
  padding: 28px;
}

.case-large-content h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.case-large-content p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 18px;
}

.case-metrics {
  display: flex;
  gap: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.case-metrics .metric .val {
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.3;
}

.case-metrics .metric .lbl {
  font-size: 12px;
  color: var(--text-sub);
}

.case-card-small {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  margin-bottom: 24px;
}

.case-card-small:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.case-card-small .case-type {
  font-size: 12px;
  color: var(--primary);
  background: rgba(11, 93, 104, 0.08);
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
  font-weight: 600;
}

.case-card-small h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.case-card-small p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 0;
}

.case-card-small .case-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  display: block;
  margin-bottom: 4px;
}

/* ===== Pricing ===== */
.pricing-section {
  background: #fff;
}

.pricing-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 34px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.pricing-card.recommended {
  border-color: var(--primary);
  box-shadow: 0 8px 32px rgba(11, 93, 104, 0.14);
  padding-top: 48px;
}

.pricing-recommend-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.pricing-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.pricing-desc {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 20px;
}

.pricing-price {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}

.pricing-price small {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-sub);
}

.pricing-period {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  padding: 7px 0;
  line-height: 1.5;
}

.pricing-features li i {
  color: var(--primary);
  font-size: 12px;
  margin-top: 5px;
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: #B6C2C8;
}

.pricing-features li.disabled i {
  color: #C6D0D5;
}

/* ===== News ===== */
.news-section {
  background: var(--bg);
}

.news-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 26px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(11, 93, 104, 0.2);
  transform: translateY(-4px);
}

.news-cat {
  display: inline-block;
  background: rgba(242, 140, 90, 0.14);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  align-self: flex-start;
}

.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-excerpt {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-bottom: 16px;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-sub);
}

.news-meta .news-date {
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-meta .read-link {
  color: var(--primary);
  font-weight: 500;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-meta .read-link i {
  transition: transform 0.2s;
}

.news-meta .read-link:hover i {
  transform: translateX(3px);
}

.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius-card);
  background: #FAFCFC;
  text-align: center;
  padding: 60px 30px;
}

.news-empty .empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(11, 93, 104, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: var(--primary);
  font-size: 24px;
}

.news-empty h4 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 6px;
}

.news-empty p {
  font-size: 14px;
  color: var(--text-sub);
}

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 26px;
  margin-bottom: 16px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.faq-item.active {
  border-color: rgba(11, 93, 104, 0.35);
  box-shadow: var(--shadow);
}

.faq-item.active::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11, 93, 104, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--primary);
  transition: transform 0.3s;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding-top: 14px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  position: relative;
  padding: 90px 0;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 74, 84, 0.96), rgba(11, 93, 104, 0.88));
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  line-height: 1.8;
}

.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: #073A42;
  padding: 70px 0 0;
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1.2fr;
  gap: 48px;
  padding-bottom: 50px;
}

.footer-brand .logo-text {
  color: #fff;
  margin-bottom: 12px;
  display: block;
}

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

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

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

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links a i {
  font-size: 10px;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-contact li i {
  color: var(--accent);
  font-size: 13px;
  margin-top: 5px;
  width: 16px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.5px;
}

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

/* ===== Mobile ===== */
@media (max-width: 991.98px) {
  .main-nav,
  .nav-search,
  .nav-link-btn {
    display: none;
  }

  .navbar-toggler-custom {
    display: flex;
  }

  .mobile-nav-wrap {
    display: block;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 0;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease;
  }

  .mobile-nav-wrap.open {
    max-height: 500px;
  }

  .mobile-nav-inner {
    padding: 18px 24px 24px;
  }

  .mobile-nav-inner a {
    display: block;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text);
    font-weight: 500;
    border-bottom: 1px solid #F0F4F5;
  }

  .mobile-nav-inner a.active {
    color: var(--primary);
  }

  .mobile-nav-inner .btn {
    width: 100%;
    margin-top: 16px;
  }

  .mobile-search {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    height: 42px;
    border-radius: 8px;
    padding: 0 12px;
    margin-bottom: 14px;
  }

  .mobile-search input {
    border: none;
    background: transparent;
    height: 100%;
    width: 100%;
    padding-left: 10px;
    font-size: 14px;
  }

  .mobile-search i {
    color: var(--text-sub);
  }

  .hero {
    padding: 140px 0 80px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-visual {
    margin-top: 36px;
  }

  .hero-card {
    margin-left: 0;
    max-width: 100%;
  }

  .hero-float-badge {
    left: auto;
    right: 10px;
    bottom: 90px;
  }

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

  .section-block {
    padding: 70px 0;
  }

  .visibility-section {
    padding: 70px 0;
  }

  .cta-section {
    padding: 70px 0;
  }

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

@media (max-width: 767.98px) {
  .header-inner {
    height: 66px;
    gap: 12px;
  }

  .logo-text {
    font-size: 17px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .header-cta {
    padding: 0 14px;
    font-size: 13px;
    height: 36px;
  }

  .hero h1 {
    font-size: 29px;
  }

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

  .hero-badge {
    font-size: 12px;
    padding: 5px 12px;
  }

  .hero-card {
    padding: 24px 20px;
  }

  .hero-float-badge {
    padding: 12px 16px;
    bottom: 80px;
  }

  .hero-float-badge .value {
    font-size: 24px;
  }

  .stats-card {
    padding: 24px 16px;
    margin-top: -36px;
    gap: 12px;
  }

  .stat-item .num {
    font-size: 30px;
  }

  .stat-item .label {
    font-size: 12px;
  }

  .section-block {
    padding: 56px 0;
  }

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

  .section-head {
    margin-bottom: 36px;
  }

  .feature-card,
  .feature-card.wide {
    padding: 22px 20px;
  }

  .feature-card h3 {
    font-size: 17px;
  }

  .scenario-img {
    height: 180px;
  }

  .scenario-body {
    padding: 22px 20px;
  }

  .case-large-content {
    padding: 20px;
  }

  .case-card-small {
    padding: 20px;
  }

  .pricing-card {
    padding: 26px 22px;
  }

  .cta-section h2 {
    font-size: 28px;
  }

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

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

@media (max-width: 520px) {
  .header-inner {
    gap: 8px;
  }

  .header-cta {
    display: none;
  }

  .navbar-toggler-custom {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .stats-card {
    grid-template-columns: repeat(2, 1fr);
    padding: 20px 8px;
  }

  .stat-item .num {
    font-size: 26px;
  }

  .stat-item .label {
    font-size: 11px;
  }

  .cta-btns {
    flex-direction: column;
    gap: 12px;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(11, 93, 104, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(11, 93, 104, 0.5);
}

/* roulang page: article */
:root {
      --primary: #0B5D68;
      --primary-dark: #084A53;
      --accent: #F28C5A;
      --accent-dark: #E0763F;
      --bg: #F6F8F9;
      --text: #1F2A2E;
      --text-sub: #5A6B73;
      --border: #E3EAEE;
      --shadow: 0 4px 20px rgba(11,40,50,0.06);
      --shadow-hover: 0 12px 32px rgba(11,40,50,0.12);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-tag: 999px;
      --radius-img: 20px;
      --space-section: 100px;
    }

    /* Reset & Base */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.75;
      font-size: 16px;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4, h5, h6 {
      font-weight: 700;
      line-height: 1.3;
      color: var(--text);
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.25s ease;
    }
    a:hover {
      color: var(--accent);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font: inherit;
    }

    .container {
      max-width: 1280px;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255,255,255,0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.3s ease;
    }
    .site-header.scrolled {
      box-shadow: var(--shadow);
    }
    .header-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 16px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 180px;
    }
    .logo-badge {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #1B8A97);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      flex-shrink: 0;
    }
    .logo-text {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 1px;
      white-space: nowrap;
    }
    .logo-text span {
      color: var(--accent);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      letter-spacing: 1.5px;
      padding: 8px 2px;
      position: relative;
      white-space: nowrap;
    }
    .main-nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform 0.25s ease;
      border-radius: 4px;
    }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--primary);
    }
    .main-nav a:hover::after,
    .main-nav a.active::after {
      transform: scaleX(1);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .search-wrap {
      position: relative;
    }
    .search-wrap input {
      height: 40px;
      border: 1px solid var(--border);
      border-radius: 8px;
      background: #fff;
      padding: 0 38px 0 14px;
      width: 190px;
      font-size: 14px;
      transition: border-color 0.25s, box-shadow 0.25s;
    }
    .search-wrap input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(11,93,104,0.12);
    }
    .search-wrap i {
      position: absolute;
      right: 13px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-sub);
      pointer-events: none;
      font-size: 14px;
    }
    .navbar-toggler {
      display: none;
      border: none;
      background: transparent;
      font-size: 22px;
      color: var(--primary);
      padding: 4px 8px;
    }

    /* Buttons */
    .btn {
      border-radius: var(--radius-btn);
      font-weight: 600;
      min-height: 40px;
      padding: 8px 20px;
      transition: all 0.25s ease;
    }
    .btn:focus {
      outline: 2px solid rgba(242,140,90,0.6);
      outline-offset: 2px;
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
      border: 1px solid var(--accent);
    }
    .btn-accent:hover,
    .btn-accent:active {
      background: var(--accent-dark);
      border-color: var(--accent-dark);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(242,140,90,0.3);
    }
    .btn-outline-primary {
      background: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
    }
    .btn-outline-primary:hover {
      background: rgba(11,93,104,0.06);
      color: var(--primary);
    }
    .btn-ghost {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.8);
      color: #fff;
    }
    .btn-ghost:hover {
      background: #fff;
      color: var(--primary-dark);
      border-color: #fff;
    }

    /* Breadcrumb */
    .breadcrumb-wrap {
      padding: 16px 0;
      font-size: 14px;
      color: var(--text-sub);
      background: #fff;
      border-bottom: 1px solid var(--border);
    }
    .breadcrumb-wrap a {
      color: var(--text-sub);
    }
    .breadcrumb-wrap a:hover {
      color: var(--accent);
    }
    .breadcrumb-wrap .separator {
      margin: 0 8px;
      color: #B7C4CB;
    }
    .breadcrumb-wrap .current {
      color: var(--primary);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      display: inline-block;
      max-width: 300px;
      vertical-align: bottom;
    }

    /* Article Page */
    .article-page {
      padding: 48px 0 80px;
    }
    .article-header {
      background: #fff;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      padding: 40px 48px;
      margin-bottom: 40px;
      position: relative;
    }
    .article-header .category-badge {
      display: inline-block;
      background: rgba(11,93,104,0.08);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: var(--radius-tag);
      margin-bottom: 18px;
    }
    .article-header h1 {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }
    .article-meta {
      display: flex;
      align-items: center;
      gap: 18px;
      color: var(--text-sub);
      font-size: 14px;
      flex-wrap: wrap;
    }
    .article-meta i {
      margin-right: 6px;
      color: var(--accent);
    }
    .article-summary {
      margin-top: 24px;
      padding: 18px 22px;
      background: var(--bg);
      border-radius: 12px;
      border-left: 4px solid var(--accent);
      color: var(--text-sub);
      font-size: 15px;
      line-height: 1.8;
    }

    .article-layout {
      display: flex;
      gap: 32px;
    }
    .article-main {
      flex: 0 0 66.6667%;
      max-width: 66.6667%;
    }
    .article-sidebar {
      flex: 0 0 33.3333%;
      max-width: 33.3333%;
    }

    .article-content {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 44px 48px;
      margin-bottom: 32px;
    }
    .article-content h2 {
      font-size: 28px;
      margin-top: 1.5em;
      margin-bottom: 0.8em;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border);
    }
    .article-content h3 {
      font-size: 21px;
      margin-top: 1.4em;
      margin-bottom: 0.6em;
    }
    .article-content p {
      margin-bottom: 1.25em;
      line-height: 1.85;
      color: #34464F;
    }
    .article-content blockquote {
      border-left: 4px solid var(--primary);
      background: rgba(11,93,104,0.04);
      padding: 16px 24px;
      border-radius: 0 12px 12px 0;
      margin: 24px 0;
      color: var(--text-sub);
    }
    .article-content ul,
    .article-content ol {
      padding-left: 24px;
      margin-bottom: 1.25em;
    }
    .article-content li {
      margin-bottom: 8px;
      line-height: 1.8;
    }
    .article-content img {
      border-radius: var(--radius-img);
      margin: 24px 0;
      box-shadow: var(--shadow);
    }
    .article-content .img-caption {
      text-align: center;
      font-size: 13px;
      color: var(--text-sub);
      margin-top: -16px;
      margin-bottom: 24px;
    }
    .article-content a {
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .article-content a:hover {
      color: var(--accent-dark);
    }

    .article-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 32px 0 0;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }
    .tag {
      background: var(--bg);
      border: 1px solid var(--border);
      color: var(--text-sub);
      font-size: 13px;
      padding: 4px 14px;
      border-radius: var(--radius-tag);
      transition: all 0.25s;
    }
    .tag:hover {
      border-color: var(--accent);
      color: var(--accent-dark);
      background: rgba(242,140,90,0.06);
    }

    .article-pagination {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 20px 28px;
      margin-bottom: 40px;
    }
    .pagination-btn {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      gap: 8px;
      transition: color 0.25s;
    }
    .pagination-btn:hover {
      color: var(--accent);
    }
    .back-category {
      background: rgba(11,93,104,0.08);
      color: var(--primary);
      padding: 8px 20px;
      border-radius: var(--radius-tag);
      font-size: 14px;
      font-weight: 600;
      transition: all 0.25s;
    }
    .back-category:hover {
      background: var(--primary);
      color: #fff;
    }

    /* Sidebar */
    .sidebar-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 28px;
      margin-bottom: 24px;
    }
    .sidebar-card h4 {
      font-size: 18px;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 2px solid var(--primary);
      display: inline-block;
    }
    .sidebar-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .sidebar-list li {
      border-bottom: 1px dashed var(--border);
      padding: 10px 0;
    }
    .sidebar-list li:last-child {
      border-bottom: none;
    }
    .sidebar-list a {
      font-size: 15px;
      color: var(--text);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .sidebar-list a:hover {
      color: var(--accent);
    }
    .sidebar-list a i {
      color: var(--accent);
      font-size: 12px;
    }
    .sidebar-cat {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .sidebar-cat a {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 14px 18px;
      color: var(--text);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 10px;
      transition: all 0.25s;
    }
    .sidebar-cat a:hover {
      border-color: var(--accent);
      background: rgba(242,140,90,0.06);
      color: var(--accent-dark);
    }
    .sidebar-contact {
      background: linear-gradient(135deg, var(--primary), #128592);
      color: #fff;
      border-radius: var(--radius-card);
      padding: 28px;
      margin-top: 24px;
    }
    .sidebar-contact h5 {
      color: #fff;
      font-size: 18px;
      margin-bottom: 12px;
    }
    .sidebar-contact p {
      font-size: 14px;
      opacity: 0.9;
      margin-bottom: 16px;
    }

    /* Recommended Cards */
    .recommend-section {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 40px;
      margin-top: 40px;
    }
    .section-title {
      font-size: 28px;
      margin-bottom: 8px;
    }
    .section-subtitle {
      color: var(--text-sub);
      font-size: 15px;
      margin-bottom: 32px;
    }
    .article-card {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.25s ease;
      height: 100%;
    }
    .article-card:hover {
      border-color: rgba(11,93,104,0.3);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .article-card .cover {
      width: 100%;
      aspect-ratio: 16/9;
      object-fit: cover;
      background: #E9F0F2;
    }
    .article-card .card-body {
      padding: 20px 22px;
    }
    .article-card .badge {
      background: rgba(242,140,90,0.12);
      color: var(--accent-dark);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-tag);
      margin-bottom: 10px;
      display: inline-block;
    }
    .article-card h3 {
      font-size: 18px;
      line-height: 1.5;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-card p {
      font-size: 14px;
      color: var(--text-sub);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 14px;
    }
    .article-card .meta {
      font-size: 13px;
      color: var(--text-sub);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .article-card .meta i {
      margin-right: 4px;
    }

    /* Not Found */
    .not-found {
      text-align: center;
      padding: 80px 20px;
    }
    .not-found .icon-circle {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: rgba(11,93,104,0.08);
      color: var(--primary);
      font-size: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 24px;
    }
    .not-found h1 {
      font-size: 28px;
      margin-bottom: 16px;
    }
    .not-found a {
      font-weight: 600;
    }

    /* Footer */
    .site-footer {
      background: #083E46;
      color: rgba(255,255,255,0.78);
      padding: 64px 0 0;
    }
    .site-footer .container {
      padding-bottom: 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand .logo-text {
      color: #fff;
      font-size: 24px;
      margin-bottom: 18px;
      display: inline-block;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      margin-top: 16px;
      max-width: 320px;
    }
    .footer-social {
      display: flex;
      gap: 14px;
      margin-top: 20px;
    }
    .footer-social a {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255,255,255,0.08);
      color: rgba(255,255,255,0.85);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.25s, transform 0.25s;
    }
    .footer-social a:hover {
      background: var(--accent);
      color: #fff;
      transform: translateY(-2px);
    }
    .footer-col h5 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: rgba(255,255,255,0.7);
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: color 0.25s;
    }
    .footer-links a i {
      font-size: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }
    .footer-contact {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 14px;
      color: rgba(255,255,255,0.7);
    }
    .footer-contact i {
      color: var(--accent);
      margin-top: 4px;
      font-size: 14px;
      width: 16px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,0.5);
    }
    .footer-bottom .copyright {
      display: flex;
      justify-content: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    /* Responsive */
    @media (max-width: 1199.98px) {
      .header-wrap {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
        gap: 12px;
      }
      .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
        padding: 8px 0 4px;
      }
      .header-actions {
        margin-left: auto;
      }
    }

    @media (max-width: 991.98px) {
      .site-header .header-wrap {
        flex-wrap: nowrap;
        height: 72px;
      }
      .main-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        gap: 18px;
        z-index: 1040;
      }
      .main-nav.open {
        display: flex;
      }
      .main-nav a {
        width: 100%;
        padding: 8px 0;
      }
      .navbar-toggler {
        display: block;
      }
      .search-wrap {
        display: none;
      }
      .header-actions .btn-outline-primary {
        display: none;
      }
      .header-actions .btn-accent {
        padding: 8px 14px;
        font-size: 14px;
        min-height: 36px;
      }

      .article-layout {
        flex-direction: column;
      }
      .article-main,
      .article-sidebar {
        flex: 0 0 100%;
        max-width: 100%;
      }
      .article-header {
        padding: 28px 24px;
      }
      .article-header h1 {
        font-size: 30px;
      }
      .article-content {
        padding: 28px 24px;
      }
    }

    @media (max-width: 767.98px) {
      :root {
        --space-section: 60px;
      }
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .logo-text {
        font-size: 18px;
      }
      .logo-badge {
        width: 34px;
        height: 34px;
        font-size: 15px;
      }
      .header-actions .btn-accent {
        font-size: 13px;
        padding: 6px 10px;
        min-height: 32px;
      }
      .article-page {
        padding: 32px 0 50px;
      }
      .article-header {
        padding: 24px 18px;
      }
      .article-header h1 {
        font-size: 26px;
      }
      .article-meta {
        gap: 12px;
        font-size: 13px;
      }
      .article-content {
        padding: 20px 16px;
      }
      .article-content h2 {
        font-size: 22px;
      }
      .article-content h3 {
        font-size: 18px;
      }
      .article-pagination {
        flex-wrap: wrap;
        gap: 14px;
      }
      .recommend-section {
        padding: 24px 16px;
      }
      .section-title {
        font-size: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom .copyright {
        flex-direction: column;
        align-items: center;
      }
    }

    @media (max-width: 575.98px) {
      .header-actions .btn-accent {
        display: none;
      }
      .navbar-toggler {
        margin-left: 8px;
      }
    }

/* roulang page: category1 */
:root{
  --primary:#0B5D68;
  --primary-dark:#094A55;
  --accent:#F28C5A;
  --accent-dark:#E0763F;
  --bg:#F6F8F9;
  --text:#1F2A2E;
  --text-sub:#5A6B73;
  --border:#E3EAEE;
  --shadow:0 4px 20px rgba(11,40,50,.06);
  --shadow-hover:0 12px 32px rgba(11,40,50,.12);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-tag:999px;
  --container-w:1280px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s}
ul,ol{list-style:none}
.container{max-width:var(--container-w);margin:0 auto;padding-left:24px;padding-right:24px}
.sec{padding:100px 0}
.sec-alt{background:#fff}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:all .25s;letter-spacing:.5px;white-space:nowrap}
.btn:focus{outline:2px solid rgba(242,140,90,.55);outline-offset:3px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(242,140,90,.35)}
.btn-accent:active{background:#C96232;transform:translateY(0)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:rgba(11,93,104,.06);color:var(--primary-dark);border-color:var(--primary-dark)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.75)}
.btn-ghost:hover{background:#fff;color:var(--primary-dark);border-color:#fff}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.88);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(227,234,238,.7);
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 2px 24px rgba(11,40,50,.08)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
  width:38px;height:38px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;
}
.logo-text{font-size:21px;font-weight:700;color:var(--primary);letter-spacing:.5px}
.logo-text span{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:32px}
.main-nav a{
  font-size:15px;color:var(--text-sub);font-weight:500;letter-spacing:1.5px;position:relative;padding:8px 0;
}
.main-nav a:hover{color:var(--primary)}
.main-nav a.active{color:var(--primary);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:var(--accent);border-radius:3px 3px 0 0;
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search{position:relative;width:200px}
.nav-search input{
  width:100%;height:38px;border-radius:8px;border:1px solid var(--border);
  background:#F3F6F7;padding:0 14px 0 36px;font-size:14px;color:var(--text);
  transition:border .2s,box-shadow .2s;
}
.nav-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,93,104,.12);background:#fff}
.nav-search i{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:14px;color:var(--text-sub)}
.nav-login{font-size:14px;color:var(--text-sub);font-weight:500}
.nav-login:hover{color:var(--primary)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--primary);font-size:18px;cursor:pointer}
.mobile-actions{display:none}
@media(max-width:1100px){
  .main-nav{gap:18px}
  .nav-search{width:150px}
}
@media(max-width:991px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-search{display:none}
  .mobile-actions{display:inline-flex;margin-left:auto}
  .main-nav{
    position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:20px 24px 28px;gap:0;border-bottom:1px solid var(--border);display:none;box-shadow:0 10px 30px rgba(11,40,50,.08);
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 0;border-bottom:1px solid rgba(227,234,238,.5);font-size:15px}
  .main-nav a.active::after{display:none}
  .main-nav a.active{color:var(--accent-dark)}
  .nav-login{display:none}
  .nav-cta{margin-top:18px;width:100%}
  .nav-cta .btn{width:100%}
}
@media(max-width:520px){
  .logo-text{font-size:18px}
  .nav-wrap{height:64px}
  .main-nav{top:64px}
}

/* ===== Category Hero ===== */
.cat-hero{
  position:relative;padding:170px 0 90px;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(9,74,85,.94) 0%,rgba(11,93,104,.86) 55%,rgba(13,110,120,.72) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero-inner{max-width:720px;color:#fff}
.cat-hero .section-tag{
  display:inline-flex;align-items:center;gap:8px;background:rgba(242,140,90,.2);
  color:#FFD9C4;border:1px solid rgba(242,140,90,.4);
  padding:5px 18px;border-radius:var(--radius-tag);font-size:13px;letter-spacing:2px;font-weight:500;margin-bottom:24px;
}
.cat-hero h1{font-size:52px;font-weight:700;line-height:1.2;margin-bottom:20px}
.cat-hero h1 span{color:var(--accent)}
.cat-hero p{font-size:17px;line-height:1.85;color:rgba(255,255,255,.92);margin-bottom:36px;max-width:620px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:70px;
  padding:38px 42px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:20px;backdrop-filter:blur(6px);
}
.hero-stat .num{font-size:38px;font-weight:700;color:#fff;line-height:1.1;font-family:"Inter","Roboto",sans-serif}
.hero-stat .label{font-size:13px;color:rgba(255,255,255,.78);margin-top:6px;letter-spacing:1px}
@media(max-width:991px){
  .cat-hero{padding:140px 0 70px}
  .cat-hero h1{font-size:38px}
  .hero-stats{grid-template-columns:repeat(2,1fr);padding:28px 24px;margin-top:48px}
}
@media(max-width:520px){
  .cat-hero{padding:110px 0 50px}
  .cat-hero h1{font-size:29px}
  .cat-hero p{font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:18px;padding:24px 18px}
  .hero-stat .num{font-size:26px}
}

/* ===== Section Head ===== */
.sec-head{text-align:center;max-width:700px;margin:0 auto 56px}
.sec-head .eyebrow{
  display:inline-block;background:rgba(11,93,104,.08);color:var(--primary);
  padding:4px 18px;border-radius:var(--radius-tag);font-size:13px;letter-spacing:2px;margin-bottom:16px;
}
.sec-head h2{font-size:34px;font-weight:700;color:var(--text);margin-bottom:14px}
.sec-head p{color:var(--text-sub);font-size:16px;line-height:1.8}
@media(max-width:520px){
  .sec-head h2{font-size:26px}
  .sec{padding:60px 0}
}

/* ===== Feature Cards ===== */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.feature-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:30px;transition:all .25s;display:flex;flex-direction:column;
}
.feature-card:hover{border-color:rgba(11,93,104,.5);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.feature-card .icon{
  width:48px;height:48px;border-radius:12px;background:rgba(11,93,104,.09);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:20px;
}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-sub);font-size:14px;line-height:1.75;margin-bottom:16px;flex-grow:1}
.feature-card .more{color:var(--accent-dark);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.feature-card .more:hover{gap:10px}
.feature-card.wide{grid-column:span 7}
.feature-card.half{grid-column:span 5}
.feature-card.third{grid-column:span 4}
.feature-card.wide .icon{width:60px;height:60px;font-size:26px}
.feature-card.wide p{font-size:15px}
.feature-card.wide h3{font-size:22px}
@media(max-width:991px){
  .feature-card.wide,.feature-card.half,.feature-card.third{grid-column:span 6}
}
@media(max-width:767px){
  .feature-card.wide,.feature-card.half,.feature-card.third{grid-column:span 12}
}

/* ===== Scene Zone ===== */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:32px;align-items:stretch}
.scene-row.reverse .scene-img{order:2}
.scene-card{background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;transition:all .25s}
.scene-card:hover{box-shadow:var(--shadow-hover)}
.scene-img{height:280px;background-size:cover;background-position:center;position:relative}
.scene-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(11,40,50,.35))}
.scene-body{padding:30px;flex-grow:1;display:flex;flex-direction:column}
.scene-body .badge{align-self:flex-start;background:rgba(11,93,104,.09);color:var(--primary);border-radius:var(--radius-tag);padding:4px 16px;font-size:13px;letter-spacing:1px;margin-bottom:16px}
.scene-body h3{font-size:22px;font-weight:700;margin-bottom:12px}
.scene-body p{color:var(--text-sub);font-size:15px;line-height:1.8;margin-bottom:18px;flex-grow:1}
.scene-list{margin-top:6px}
.scene-list li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;color:var(--text);font-size:14px}
.scene-list li i{color:var(--accent);margin-top:5px;font-size:13px}
@media(max-width:991px){
  .scene-row{grid-template-columns:1fr}
  .scene-row.reverse .scene-img{order:0}
}

/* ===== Flow ===== */
.flow-wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:20px}
.flow-step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 20px;text-align:center;position:relative;transition:all .25s;
}
.flow-step:hover{border-color:rgba(11,93,104,.5);box-shadow:var(--shadow);transform:translateY(-3px)}
.flow-step .step-num{
  width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin:0 auto 16px;
}
.flow-step .step-arrow{
  position:absolute;top:50%;right:-17px;transform:translateY(-50%);color:var(--accent);font-size:16px;z-index:2;
}
.flow-step h4{font-size:16px;font-weight:700;margin-bottom:8px}
.flow-step p{font-size:13px;color:var(--text-sub);line-height:1.65}
@media(max-width:1199px){
  .flow-wrap{grid-template-columns:repeat(3,1fr)}
  .flow-step .step-arrow{display:none}
}
@media(max-width:767px){
  .flow-wrap{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:520px){
  .flow-wrap{grid-template-columns:1fr}
}

/* ===== Case ===== */
.case-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.case-main{grid-column:span 7;background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;transition:all .25s}
.case-main:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.case-main .case-img{height:300px;background-size:cover;background-position:center;position:relative}
.case-main .case-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(9,74,85,.75))}
.case-main .case-stat{
  position:absolute;left:24px;bottom:20px;color:#fff;z-index:2;
}
.case-main .case-stat .big{font-size:40px;font-weight:700;line-height:1}
.case-main .case-stat .txt{font-size:13px;opacity:.85;margin-top:4px}
.case-main .case-body{padding:28px}
.case-main .case-body h3{font-size:21px;font-weight:700;margin-bottom:10px}
.case-main .case-body p{color:var(--text-sub);font-size:14px;line-height:1.8}
.case-sub{grid-column:span 5;display:flex;flex-direction:column;gap:20px}
.case-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;display:flex;gap:18px;align-items:center;transition:all .25s;flex:1;
}
.case-card:hover{border-color:rgba(11,93,104,.5);box-shadow:var(--shadow)}
.case-card .case-avatar{
  width:56px;height:56px;border-radius:14px;background:rgba(11,93,104,.09);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;
}
.case-card .case-info h4{font-size:15px;font-weight:700;margin-bottom:6px}
.case-card .case-info p{font-size:13px;color:var(--text-sub);line-height:1.65}
.case-card .case-info .num{color:var(--accent-dark);font-weight:700;font-size:15px}
@media(max-width:991px){
  .case-main,.case-sub{grid-column:span 12}
}

/* ===== Info Cards ===== */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
  transition:all .25s;display:flex;flex-direction:column;
}
.info-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:rgba(11,93,104,.4)}
.info-card .img-wrap{height:190px;background-size:cover;background-position:center;position:relative}
.info-card .tag{
  position:absolute;top:14px;left:14px;background:var(--accent);color:#fff;
  font-size:12px;padding:3px 14px;border-radius:var(--radius-tag);letter-spacing:1px;
}
.info-card .info-body{padding:22px;display:flex;flex-direction:column;flex-grow:1}
.info-card .info-body h4{
  font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .info-body p{
  color:var(--text-sub);font-size:14px;line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex-grow:1;
}
.info-card .info-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(227,234,238,.6);padding-top:14px}
.info-card .date{font-size:13px;color:var(--text-sub)}
.info-card .read-more{font-size:13px;color:var(--accent-dark);font-weight:600}
@media(max-width:991px){
  .info-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .info-grid{grid-template-columns:1fr}
}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:16px;
  overflow:hidden;transition:all .25s;
}
.faq-item:hover{border-color:rgba(11,93,104,.35)}
.faq-item.active{border-left:3px solid var(--primary)}
.faq-q{
  padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);gap:16px;
}
.faq-q .arrow{color:var(--accent);transition:transform .3s;font-size:14px;flex-shrink:0}
.faq-item.active .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-item.active .faq-a{max-height:500px;padding-bottom:20px}
.faq-a p{color:var(--text-sub);font-size:14px;line-height:1.85}

/* ===== CTA ===== */
.cta-section{
  position:relative;padding:90px 0;text-align:center;color:#fff;overflow:hidden;
  background:linear-gradient(120deg,var(--primary-dark) 0%,var(--primary) 60%,#127787 100%);
}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:36px;font-weight:700;margin-bottom:16px}
.cta-section p{font-size:16px;color:rgba(255,255,255,.85);max-width:620px;margin:0 auto 36px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
@media(max-width:520px){
  .cta-section h2{font-size:27px}
}

/* ===== Footer ===== */
.site-footer{background:#073E47;color:rgba(255,255,255,.78);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:50px;padding-bottom:50px}
.footer-brand .logo-text{color:#fff;font-size:23px}
.footer-brand p{font-size:14px;line-height:1.8;margin:18px 0 24px;color:rgba(255,255,255,.65)}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);font-size:15px;transition:all .25s;
}
.footer-social a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.footer-col h5{
  font-size:16px;color:#fff;font-weight:600;margin-bottom:22px;letter-spacing:1px;position:relative;
}
.footer-col h5::after{content:"";position:absolute;left:0;bottom:-8px;width:26px;height:3px;background:var(--accent);border-radius:3px}
.footer-links li{margin-bottom:12px}
.footer-links li a{font-size:14px;color:rgba(255,255,255,.65);transition:all .25s;display:inline-flex;align-items:center;gap:8px}
.footer-links li a i{font-size:10px;color:var(--accent)}
.footer-links li a:hover{color:var(--accent);padding-left:4px}
.footer-contact li{
  display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;font-size:14px;color:rgba(255,255,255,.65);
}
.footer-contact li i{color:var(--accent);margin-top:5px;font-size:14px;width:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:24px 0;text-align:center}
.footer-bottom .copyright{font-size:13px;color:rgba(255,255,255,.5);display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
@media(max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:40px}
}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:36px}
}

/* roulang page: category2 */
:root {
            --primary: #0B5D68;
            --primary-dark: #084751;
            --accent: #F28C5A;
            --accent-dark: #E0763F;
            --bg: #F6F8F9;
            --text: #1F2A2E;
            --text-sub: #5A6B73;
            --border: #E3EAEE;
            --shadow: 0 4px 20px rgba(11, 40, 50, 0.06);
            --shadow-hover: 0 12px 32px rgba(11, 40, 50, 0.12);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --radius-img: 20px;
            --container-w: 1280px;
            --space-section-lg: 100px;
            --space-section-sm: 60px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.22s ease;
        }

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

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

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

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

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(227, 234, 238, 0.7);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 24px rgba(11, 40, 50, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #0E7C8B);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(11, 93, 104, 0.28);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
        }

        .main-nav a {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 400;
            color: var(--text);
            border-radius: 8px;
            letter-spacing: 1.5px;
            transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
            position: relative;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform 0.25s ease;
        }

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

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(11, 93, 104, 0.04);
        }

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

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

        .header-search {
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0 12px;
            height: 40px;
            width: 180px;
            transition: border-color 0.22s, box-shadow 0.22s;
        }

        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text);
        }

        .header-search i {
            color: var(--text-sub);
            font-size: 14px;
            margin-right: 6px;
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 93, 104, 0.1);
        }

        .btn {
            font-family: inherit;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 22px;
            font-size: 15px;
            line-height: 1.5;
            text-decoration: none;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(11, 93, 104, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            height: 44px;
            padding: 0 24px;
            box-shadow: 0 4px 16px rgba(242, 140, 90, 0.25);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(242, 140, 90, 0.35);
        }

        .btn-accent:active {
            background: #C96A38;
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(242, 140, 90, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            height: 44px;
            padding: 0 24px;
        }

        .btn-outline:hover {
            background: rgba(11, 93, 104, 0.06);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            height: 44px;
            padding: 0 24px;
        }

        .btn-ghost:hover {
            background: #fff;
            color: var(--primary-dark);
            border-color: #fff;
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .mobile-search-trigger {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .mobile-search-box {
            display: none;
            padding: 12px 16px;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .mobile-search-box input {
            width: 100%;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0 14px;
            font-size: 14px;
            outline: none;
        }

        .category-hero {
            position: relative;
            padding: 150px 0 80px;
            background: linear-gradient(135deg, #0A4A55 0%, #0B5D68 45%, #12889A 100%);
            color: #fff;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            right: -10%;
            top: -30%;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .category-hero::after {
            content: "";
            position: absolute;
            right: 5%;
            bottom: -40%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(242, 140, 90, 0.08);
        }

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

        .category-hero .hero-kicker {
            display: inline-block;
            background: rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-tag);
            padding: 6px 18px;
            font-size: 14px;
            letter-spacing: 2px;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
            letter-spacing: 1px;
        }

        .category-hero .hero-sub {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
            max-width: 560px;
            margin-bottom: 32px;
        }

        .category-hero .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head .section-kicker {
            display: inline-block;
            background: rgba(11, 93, 104, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            border-radius: var(--radius-tag);
            padding: 5px 16px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.25;
            margin: 0 0 12px;
        }

        .section-head .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 660px;
            line-height: 1.8;
        }

        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            height: 100%;
        }

        .card:hover {
            border-color: rgba(11, 93, 104, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .plan-overview {
            background: #fff;
        }

        .plan-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .plan-visual {
            border-radius: var(--radius-img);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
            background: #E9EFF2;
            box-shadow: var(--shadow-hover);
        }

        .plan-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .plan-visual .img-badge {
            position: absolute;
            left: 20px;
            top: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-tag);
            letter-spacing: 1px;
        }

        .plan-content h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .plan-content p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .plan-points {
            list-style: none;
            padding: 0;
            margin: 20px 0 24px;
        }

        .plan-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        .plan-points li i {
            color: var(--primary);
            background: rgba(11, 93, 104, 0.08);
            border-radius: 50%;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .plan-points li:nth-child(even) i {
            color: var(--accent-dark);
            background: rgba(242, 140, 90, 0.12);
        }

        .cooperation-stage {
            background: var(--bg);
        }

        .stage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .stage-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 30px;
            position: relative;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
        }

        .stage-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(11, 93, 104, 0.2);
        }

        .stage-num {
            font-size: 48px;
            font-weight: 800;
            color: rgba(11, 93, 104, 0.1);
            line-height: 1;
            margin-bottom: 18px;
            font-family: "Inter", sans-serif;
        }

        .stage-card h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .stage-card p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            margin: 0;
        }

        .stage-card .stage-icon {
            position: absolute;
            right: 26px;
            top: 32px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(11, 93, 104, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .partner-benefit {
            background: #fff;
        }

        .benefit-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        .benefit-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .benefit-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all 0.25s ease;
        }

        .benefit-item:hover {
            background: #fff;
            border-color: rgba(11, 93, 104, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .benefit-item .b-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #12889A);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
            box-shadow: 0 6px 16px rgba(11, 93, 104, 0.2);
        }

        .benefit-item:nth-child(even) .b-icon {
            background: linear-gradient(135deg, var(--accent), #F7A87E);
            box-shadow: 0 6px 16px rgba(242, 140, 90, 0.25);
        }

        .benefit-item h5 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .benefit-item p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .signup-panel {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 38px 32px;
            color: #fff;
            box-shadow: 0 16px 44px rgba(11, 93, 104, 0.28);
            position: sticky;
            top: 100px;
        }

        .signup-panel h4 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }

        .signup-panel p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 14px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
            display: block;
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            height: 44px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 15px;
            color: #fff;
            outline: none;
            transition: all 0.22s ease;
            font-family: inherit;
        }

        .form-control::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(242, 140, 90, 0.25);
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
        }

        .signup-panel .btn-accent {
            width: 100%;
            margin-top: 10px;
        }

        .signup-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
            margin-top: 12px;
            margin-bottom: 0;
        }

        .case-strip {
            background: var(--bg);
        }

        .case-grid-large {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 32px;
        }

        .case-main {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
        }

        .case-main:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .case-main .case-img {
            aspect-ratio: 16/10;
            background: #E9EFF2;
            overflow: hidden;
            position: relative;
        }

        .case-main .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-main .case-img .case-tag {
            position: absolute;
            left: 20px;
            top: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-tag);
        }

        .case-main .case-body {
            padding: 28px;
        }

        .case-main .case-body h4 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }

        .case-main .case-body p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .case-metrics {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            padding-top: 18px;
            border-top: 1px solid var(--border);
        }

        .case-metric-item .metric-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            font-family: "Inter", sans-serif;
        }

        .case-metric-item .metric-label {
            font-size: 13px;
            color: var(--text-sub);
        }

        .case-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .case-side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
            flex: 1;
        }

        .case-side-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .case-side-card .case-type {
            display: inline-block;
            background: rgba(11, 93, 104, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-tag);
            padding: 4px 12px;
            margin-bottom: 14px;
        }

        .case-side-card h5 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .case-side-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .case-side-card .metric-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-dark);
            font-family: "Inter", sans-serif;
        }

        .faq-section {
            background: #fff;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 22px 28px;
            margin-bottom: 14px;
            transition: border-color 0.25s, box-shadow 0.25s;
            position: relative;
        }

        .faq-item.active {
            border-color: rgba(11, 93, 104, 0.3);
            box-shadow: var(--shadow);
            border-left: 3px solid var(--primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            padding-right: 20px;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }

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

        .faq-arrow {
            color: var(--text-sub);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-top: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            margin-top: 14px;
            padding-top: 10px;
            border-top: 1px dashed var(--border);
        }

        .cta-panel {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 55%, #12889A);
            border-radius: 24px;
            padding: 70px 60px;
            color: #fff;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            left: -40px;
            bottom: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(242, 140, 90, 0.1);
        }

        .cta-panel h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
            position: relative;
            z-index: 2;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
            position: relative;
            z-index: 2;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .site-footer {
            background: #083D46;
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
            display: inline-block;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 22px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: all 0.25s ease;
        }

        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-links a i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

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

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact li i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            padding: 22px 0;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .copyright {
            display: flex;
            gap: 10px;
            align-items: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
            flex-wrap: wrap;
            justify-content: center;
        }

        @media (max-width: 1199px) {
            .main-nav a {
                padding: 8px 8px;
                font-size: 14px;
                letter-spacing: 1px;
            }

            .header-search {
                width: 140px;
            }
        }

        @media (max-width: 991px) {
            .header-inner {
                height: 64px;
            }

            .mobile-toggle {
                display: flex;
            }

            .mobile-search-trigger {
                display: flex;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 20px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(11, 40, 50, 0.1);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                white-space: normal;
                border-radius: 10px;
            }

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

            .main-nav a.active {
                background: rgba(11, 93, 104, 0.06);
            }

            .header-search {
                display: none;
            }

            .header-actions .btn-accent {
                display: none;
            }

            .header-actions .login-link {
                display: none;
            }

            .mobile-search-box {
                display: block;
            }

            .header-actions {
                gap: 8px;
            }

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

            .plan-visual {
                aspect-ratio: 16/10;
            }

            .stage-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .signup-panel {
                position: static;
            }

            .case-grid-large {
                grid-template-columns: 1fr;
            }

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

            .cta-panel {
                padding: 50px 30px;
            }

            .category-hero {
                padding: 130px 0 60px;
            }

            .category-hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section-lg: 60px;
                --space-section-sm: 40px;
            }

            .section-head h2 {
                font-size: 28px;
            }

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

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

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

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

            .cta-panel h2 {
                font-size: 26px;
            }

            .cta-panel p {
                font-size: 15px;
            }

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

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .case-main .case-body {
                padding: 20px;
            }

            .case-metrics {
                flex-direction: column;
                gap: 16px;
            }

            .faq-item {
                padding: 18px 18px;
            }

            .faq-question {
                font-size: 15px;
            }

            .plan-content h3 {
                font-size: 24px;
            }

            .stage-card {
                padding: 26px 22px;
            }

            .signup-panel {
                padding: 28px 22px;
            }

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

            .footer-bottom {
                padding: 18px 16px;
            }

            .copyright {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .header-inner {
                gap: 8px;
            }

            .mobile-toggle,
            .mobile-search-trigger {
                width: 38px;
                height: 38px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .cta-panel {
                padding: 40px 20px;
                border-radius: 18px;
            }

            .cta-panel h2 {
                font-size: 22px;
            }

            .case-main .case-body h4 {
                font-size: 19px;
            }

            .case-side-card {
                padding: 20px;
            }
        }