/* roulang page: index */
:root {
  --primary: #0B6E5B;
  --primary-dark: #0A2E28;
  --accent: #FF7A45;
  --accent-dark: #E5622E;
  --bg: #F7F5F1;
  --surface: #FFFFFF;
  --surface-soft: #FBF9F5;
  --text: #1E2A27;
  --text-light: #5D6B66;
  --border: #E8E2D8;
  --success: #16A34A;
  --warning: #D97706;
  --error: #DC2626;
  --radius-lg: 18px;
  --radius-md: 10px;
  --shadow: 0 2px 12px rgba(10, 46, 40, 0.06);
  --shadow-lg: 0 12px 28px rgba(10, 46, 40, 0.12);
  --container: 1200px;
  --space-section: 96px;
}

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

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  margin: 0 0 0.5em;
  color: var(--primary-dark);
  font-weight: 800;
  line-height: 1.3;
}

h1 {
  font-size: clamp(32px, 4.2vw, 50px);
}

h2 {
  font-size: clamp(26px, 3.2vw, 36px);
}

h3 {
  font-size: 20px;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}

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

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(11, 110, 91, 0.22);
  outline-offset: 2px;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

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

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

.section-white {
  background: var(--surface);
}

.section-head {
  max-width: 780px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-light);
  font-size: 16px;
  margin: 0;
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 28px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background .2s ease, transform .15s ease, border-color .2s ease, box-shadow .2s ease;
  line-height: 1.2;
}

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

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 122, 69, 0.22);
}

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

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .7);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
  color: #fff;
}

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

.btn-outline:hover {
  background: rgba(11, 110, 91, .08);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  min-height: 40px;
  padding: 6px 18px;
  font-size: 14px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px dotted var(--primary);
  color: var(--primary);
  font-weight: 600;
  transition: gap .2s ease;
}

.link-arrow i {
  font-size: 13px;
}

.link-arrow:hover {
  gap: 12px;
  color: var(--primary-dark);
  border-bottom-color: var(--primary-dark);
}

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

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

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--primary-dark);
}

.brand-name {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--primary);
}

.brand-tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-light);
  letter-spacing: .5px;
  line-height: 1;
}

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

.channel-wrapper {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .96);
  border-top: 1px solid rgba(232, 226, 216, .6);
  border-bottom: 1px solid rgba(232, 226, 216, .8);
}

.channel-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  min-height: 52px;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 14px 14px 12px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.channel-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 100%;
  bottom: 0;
  height: 3px;
  border-radius: 4px 4px 0 0;
  background: var(--primary);
  transition: right .28s ease;
}

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

.channel-link:hover::after {
  right: 14px;
}

.channel-link.active {
  color: var(--primary);
}

.channel-link.active::after {
  right: 14px;
}

/* Hero */
.hero {
  position: relative;
  color: #fff;
  background-color: var(--primary-dark);
  background-image: linear-gradient(115deg, rgba(10, 46, 40, .94), rgba(10, 46, 40, .82) 55%, rgba(11, 110, 91, .88)), url("/assets/images/backpic/back-1.png");
  background-position: center;
  background-size: cover;
  padding: 96px 0 104px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 56px;
  align-items: center;
}

.hero-copy h1 {
  color: #fff;
  margin-bottom: 20px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, .9);
  margin-bottom: 22px;
  letter-spacing: .4px;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .86);
  margin-bottom: 28px;
  max-width: 560px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 34px;
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 100px;
  padding: 7px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, .95);
}

.hero-points i {
  color: #6FC7AE;
  font-size: 13px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.hero-form-card {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 20px 44px rgba(0, 0, 0, .12);
}

.hero-form-card h3 {
  font-size: 21px;
  margin-bottom: 4px;
}

.hero-form-card > p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 22px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--primary-dark);
}

.form-control {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0 14px;
  background: var(--surface);
  transition: border-color .2s ease, box-shadow .2s ease;
}

textarea.form-control {
  height: auto;
  min-height: 86px;
  padding: 12px 14px;
  resize: vertical;
}

.form-control::placeholder {
  color: #A9B2AD;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 110, 91, .12);
}

.form-note {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 14px;
  text-align: center;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #EDF9F2;
  border-left: 4px solid var(--success);
  color: #166534;
  font-size: 14px;
  padding: 12px 16px;
  border-radius: 8px;
  margin-top: 18px;
}

.form-success i {
  font-size: 16px;
}

.status-strip {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.status-inline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 28px;
  color: var(--text-light);
  font-size: 14px;
}

.status-inline .status-ok {
  color: var(--success);
  font-weight: 600;
}

.status-inline i {
  margin-right: 4px;
}

/* Solutions */
.solution-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  align-items: stretch;
}

.solution-main {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}

.solution-main:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(11, 110, 91, .32);
}

.solution-img {
  aspect-ratio: 16 / 9;
  background: #DDE5E1;
  background: linear-gradient(135deg, #D9E5E0, #C9DDD6);
}

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

.solution-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.solution-body h3 {
  margin-bottom: 6px;
}

.solution-body p {
  color: var(--text-light);
  margin-bottom: 8px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 10px;
}

.solution-right {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.solution-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.solution-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11, 110, 91, .3);
}

.solution-card h4 {
  font-size: 17px;
  margin: 14px 0 6px;
}

.solution-card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 18px;
}

.solution-card .link-arrow {
  margin-top: auto;
  font-size: 14px;
}

.solution-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 110, 91, .1);
  color: var(--primary);
  font-size: 20px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(11, 110, 91, .09);
  color: var(--primary-dark);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
}

/* Metrics */
.band-dark {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .9);
  padding: 72px 0;
}

.band-dark .section-head h2 {
  color: #fff;
}

.band-dark .section-head p {
  color: rgba(255, 255, 255, .65);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: 48px;
}

.metric-item {
  text-align: center;
  padding: 10px 8px;
}

.metric-value {
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -.5px;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 15px;
  color: rgba(255, 255, 255, .72);
}

/* testimonials */
.testimonials-wrap {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.testimonial-main {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow);
}

.testimonial-main q {
  display: block;
  font-size: 18px;
  line-height: 1.9;
  font-weight: 500;
  color: var(--primary-dark);
  quotes: none;
  margin: 18px 0 24px;
}

.avatar-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex: 0 0 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  background: var(--primary);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px rgba(11, 110, 91, .2);
}

.avatar.avatar-c {
  background: #B25E36;
}

.avatar.avatar-d {
  background: #435E8F;
}

.avatar-name {
  font-weight: 700;
  color: var(--primary-dark);
}

.avatar-meta {
  font-size: 13px;
  color: var(--text-light);
}

.testimonial-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.testimonial-sm {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow .2s ease, transform .2s ease;
}

.testimonial-sm:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.testimonial-sm q {
  quotes: none;
  color: var(--text);
  line-height: 1.75;
  display: block;
  font-size: 15px;
}

.testimonial-sm .avatar {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
}

/* Dynamic */
.post-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.post-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}

.post-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(11, 110, 91, .28);
}

.post-date {
  flex: 0 0 64px;
  width: 64px;
  text-align: center;
  background: rgba(11, 110, 91, .1);
  color: var(--primary-dark);
  border-radius: 12px;
  padding: 10px 6px;
  font-size: 13px;
  line-height: 1.3;
  font-weight: 600;
}

.post-copy {
  flex: 1;
  min-width: 0;
}

.post-copy h3 {
  font-size: 16px;
  margin-bottom: 4px;
  color: var(--primary-dark);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-copy p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-badge {
  flex: 0 0 auto;
}

.post-badge .tag {
  font-size: 12px;
}

.post-empty {
  grid-column: 1 / -1;
  border: 1px dashed #CFD8D3;
  border-radius: var(--radius-lg);
  background: rgba(247, 245, 241, .6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 48px 20px;
  color: rgba(30, 42, 39, .48);
  font-size: 15px;
}

/* FAQ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.faq-item:hover {
  border-color: rgba(11, 110, 91, .22);
  box-shadow: var(--shadow);
}

.faq-item[open] {
  border-color: rgba(11, 110, 91, .34);
}

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

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

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  line-height: 1;
  margin-left: 18px;
  transition: transform .15s ease;
}

.faq-item[open] summary::after {
  content: "×";
}

.faq-content {
  padding-top: 14px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}

/* CTA */
.cta-block {
  background: var(--bg);
  padding-bottom: 96px;
}

.cta-banner {
  background-color: var(--primary-dark);
  background-image: linear-gradient(120deg, rgba(10, 46, 40, .96), rgba(11, 110, 91, .9)), url("/assets/images/coverpic/cover-1.webp");
  background-size: cover;
  background-position: center;
  border-radius: 28px;
  padding: 68px 48px;
  text-align: center;
  color: #fff;
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(26px, 3.2vw, 38px);
  margin-bottom: 14px;
}

.cta-banner p {
  color: rgba(255, 255, 255, .82);
  max-width: 620px;
  margin: 0 auto 34px;
  font-size: 16px;
}

.cta-btn-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .78);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer-brand-title {
  font-size: 23px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand-title span {
  color: #5FC0A5;
}

.footer-about {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .62);
  max-width: 360px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .4px;
  margin-bottom: 16px;
}

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

.footer-links a {
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
  border-bottom: 1px dotted transparent;
  transition: color .2s ease, border-color .2s ease, padding-left .2s ease;
}

.footer-links a:hover {
  color: var(--accent);
  border-bottom-color: rgba(255, 122, 69, .5);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, .72);
}

@media (max-width: 1024px) {
  .hero {
    padding: 72px 0;
  }

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

  .hero-copy {
    max-width: 760px;
  }

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

  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

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

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

@media (max-width: 640px) {
  :root {
    --space-section: 72px;
  }

  .container {
    width: min(100% - 32px, 1200px);
  }

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

  .brand-name {
    font-size: 20px;
  }

  .brand-tag {
    font-size: 10px;
  }

  .hero {
    padding: 52px 0 64px;
  }

  .hero-form-card {
    padding: 22px;
  }

  .hero-points {
    display: flex;
    flex-wrap: wrap;
  }

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

  .solution-body {
    padding: 22px;
  }

  .metric-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .metric-value {
    font-size: 32px;
  }

  .btn {
    padding: 10px 22px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 48px;
  }

  .post-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .post-date {
    text-align: left;
    display: inline-flex;
    width: auto;
    border-radius: 8px;
  }

  .post-copy h3 {
    white-space: normal;
  }

  .cta-banner {
    padding: 42px 22px;
  }

  .cta-banner p {
    margin-bottom: 26px;
  }

  .testimonial-main,
  .testimonial-sm {
    padding: 20px;
  }

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

/* roulang page: category1 */
:root{
  --brand:#0B6E5B;
  --brand-deep:#0A2E28;
  --brand-mid:#0E4A3D;
  --accent:#FF7A45;
  --accent-dark:#E5622E;
  --bg:#F7F5F1;
  --bg-card:#FFFFFF;
  --bg-soft:#EFEAE3;
  --text:#1F2A26;
  --text-soft:#5D6A65;
  --border:#E8E2D8;
  --success:#16A34A;
  --warning:#D97706;
  --danger:#DC2626;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-sm:0 2px 12px rgba(10,46,40,.06);
  --shadow-md:0 12px 28px rgba(10,46,40,.12);
  --container:1200px;
  --space-lg:96px;
  --space-md:64px;
  --space-sm:40px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit}
ul,ol{list-style:none}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
.section{
  padding:var(--space-lg) 0;
}
.section-head{
  max-width:820px;
  margin-bottom:48px;
}
.section-head.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(11,110,91,.08);
  border-radius:999px;
  padding:6px 16px;
  margin-bottom:18px;
  text-transform:uppercase;
}
.eyebrow i{
  font-size:12px;
  color:var(--brand);
}
.section-head h2{
  font-size:34px;
  line-height:1.3;
  font-weight:800;
  color:var(--brand-deep);
  letter-spacing:-.02em;
  margin-bottom:16px;
}
.section-head p{
  font-size:16px;
  color:var(--text-soft);
  max-width:720px;
}
.section-head.center p{
  margin-left:auto;
  margin-right:auto;
}
.site-header{
  background:#fff;
  border-bottom:1px solid var(--border);
}
.header-main{
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
}
.brand-name{
  font-size:28px;
  font-weight:900;
  color:var(--brand-deep);
  letter-spacing:-.03em;
  line-height:1.1;
}
.brand-name span{
  color:var(--brand);
}
.brand-tag{
  padding-left:14px;
  margin-left:2px;
  border-left:1px solid var(--border);
  font-size:13px;
  font-weight:500;
  color:var(--text-soft);
  line-height:1.3;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.channel-wrapper{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(255,255,255,.96);
  border-top:1px solid #F0ECE5;
  border-bottom:1px solid rgba(232,226,216,.9);
}
.channel-nav{
  display:flex;
  align-items:center;
  gap:4px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{
  display:none;
}
.channel-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
  padding:12px 20px 12px 8px;
  margin-right:14px;
  font-size:15px;
  font-weight:600;
  color:#33403b;
  border-bottom:3px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.channel-link:hover{
  color:var(--brand);
  border-bottom-color:rgba(11,110,91,.35);
}
.channel-link.active{
  color:var(--brand);
  border-bottom-color:var(--brand);
  font-weight:700;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:none;
  cursor:pointer;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  transition:background-color .2s ease,color .2s ease,transform .18s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn:focus-visible{
  outline:3px solid rgba(11,110,91,.4);
  outline-offset:3px;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 6px 20px rgba(255,122,69,.24);
}
.btn-primary:hover{
  background:var(--accent-dark);
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(255,122,69,.3);
}
.btn-primary:active{
  transform:translateY(1px);
}
.btn-sm{
  padding:10px 18px;
  font-size:14px;
  border-radius:8px;
}
.btn-outline-light{
  background:transparent;
  border:1px solid rgba(255,255,255,.72);
  color:#fff;
}
.btn-outline-light:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
}
.btn-outline-brand{
  background:transparent;
  border:1px solid var(--brand);
  color:var(--brand);
}
.btn-outline-brand:hover{
  background:rgba(11,110,91,.08);
  border-color:var(--brand-deep);
  transform:translateY(-2px);
}
.category-hero{
  position:relative;
  color:#fff;
  background:
    linear-gradient(108deg,rgba(6,32,27,.94) 0%,rgba(8,48,40,.86) 54%,rgba(10,46,40,.72) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  background-color:var(--brand-deep);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.category-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:120px;
  background:linear-gradient(to top,rgba(247,245,241,.08),transparent);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:64px;
  align-items:center;
  padding:86px 0 96px;
}
.category-hero .eyebrow{
  background:rgba(255,255,255,.08);
  color:#B9E7DA;
  border:1px solid rgba(255,255,255,.14);
}
.hero-copy h1{
  font-size:52px;
  line-height:1.18;
  font-weight:900;
  letter-spacing:-.03em;
  color:#fff;
  margin:8px 0 20px;
}
.hero-copy h1 span{
  color:#6FD0B6;
  display:inline-block;
}
.hero-lead{
  font-size:17px;
  color:rgba(255,255,255,.84);
  max-width:580px;
  line-height:1.9;
  margin-bottom:34px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:30px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.hero-points li{
  font-size:13px;
  font-weight:500;
  color:rgba(255,255,255,.76);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  padding:7px 14px;
  border-radius:999px;
}
.hero-visual{
  position:relative;
}
.login-preview{
  position:relative;
  background:rgba(255,255,255,.98);
  border-radius:20px;
  padding:26px 24px 20px;
  box-shadow:0 24px 66px rgba(0,0,0,.22);
  max-width:400px;
  width:100%;
  margin-left:auto;
  color:var(--text);
  border:1px solid rgba(255,255,255,.5);
}
.preview-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
}
.preview-brand{
  font-size:18px;
  font-weight:800;
  color:var(--brand-deep);
}
.preview-status{
  font-size:12px;
  color:var(--brand);
  background:rgba(11,110,91,.09);
  border-radius:999px;
  padding:4px 10px;
}
.preview-field{
  margin-bottom:18px;
}
.preview-field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--text-soft);
  margin-bottom:7px;
}
.preview-field .field-box{
  width:100%;
  height:46px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#FBF9F6;
  display:flex;
  align-items:center;
  padding:0 14px;
  font-size:14px;
  color:#89938f;
}
.preview-field .field-box i{
  margin-right:8px;
  color:var(--brand);
}
.preview-verify{
  display:flex;
  gap:10px;
  align-items:center;
}
.preview-verify span{
  flex:1;
  height:46px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#FBF9F6;
  display flex;
  align-items:center;
  padding:0 14px;
  font-size:15px;
  letter-spacing:.2em;
  color:var(--brand-deep);
  font-family:ui-monospace,"Roboto Mono",Menlo,monospace;
}
.preview-verify small{
  font-size:12px;
  color:var(--text-soft);
  background:var(--bg-soft);
  padding:6px 12px;
  border-radius:8px;
  white-space:nowrap;
}
.preview-btn{
  margin-top:22px;
  width:100%;
  height:48px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
}
.preview-note{
  margin-top:18px;
  text-align:center;
  font-size:12px;
  color:#97A09C;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:7px;
}
.preview-note i{
  color:var(--success);
}
.capability-section{
  background:var(--bg);
}
.capability-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.capability-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:30px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  box-shadow:var(--shadow-sm);
}
.capability-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(11,110,91,.3);
}
.capability-card.featured{
  grid-column:span 2;
  background:
    linear-gradient(135deg,rgba(11,110,91,.04) 0%,rgba(255,255,255,0) 46%),
    linear-gradient(0deg,#fff,#fff);
  display:grid;
  grid-template-columns:auto 1fr;
  gap:30px;
  align-items:start;
}
.capability-card .icon-box{
  width:58px;
  height:58px;
  border-radius:16px;
  background:rgba(11,110,91,.12);
  color:var(--brand);
  font-size:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:22px;
}
.capability-card.featured .icon-box{
  width:68px;
  height:68px;
  border-radius:18px;
  font-size:28px;
  margin-bottom:0;
}
.capability-card h3{
  font-size:20px;
  font-weight:800;
  color:var(--brand-deep);
  margin-bottom:10px;
  letter-spacing:-.01em;
}
.capability-card.featured h3{
  font-size:24px;
}
.capability-card p{
  font-size:14px;
  color:var(--text-soft);
  line-height:1.85;
}
.capability-list{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 22px;
}
.capability-list li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  color:#374540;
}
.capability-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:11px;
  color:var(--brand);
  position:absolute;
  left:0;
  top:4px;
}
.scenario-section{
  background:#fff;
  position:relative;
  overflow:hidden;
}
.scenario-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:68px;
}
.scenario-media{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
}
.scenario-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.scenario-tags{
  position:absolute;
  left:18px;
  bottom:18px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.scenario-tags span{
  background:rgba(10,46,40,.84);
  color:#fff;
  font-size:13px;
  font-weight:500;
  padding:6px 14px;
  border-radius:999px;
  backdrop-filter:blur(4px);
  border:1px solid rgba(255,255,255,.15);
}
.scenario-copy h2{
  font-size:32px;
  font-weight:800;
  color:var(--brand-deep);
  line-height:1.3;
  margin-bottom:14px;
  letter-spacing:-.02em;
}
.scenario-copy > p{
  color:var(--text-soft);
  margin-bottom:28px;
  line-height:1.9;
}
.scenario-list{
  display:grid;
  gap:16px;
  margin-bottom:32px;
}
.scenario-list li{
  background:#FBF9F6;
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px 20px;
  display:flex;
  gap:16px;
  align-items:flex-start;
  transition:border-color .2s ease,transform .2s ease;
}
.scenario-list li:hover{
  border-color:rgba(11,110,91,.35);
  transform:translateX(4px);
}
.scenario-list .sic{
  border-radius:10px;
  min-width:42px;
  height:42px;
  background:rgba(11,110,91,.1);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  margin-top:2px;
}
.scenario-list h3{
  font-size:16px;
  font-weight:700;
  color:var(--brand-deep);
  margin-bottom:4px;
}
.scenario-list p{
  font-size:14px;
  color:var(--text-soft);
  line-height:1.7;
}
.process-section{
  background:var(--bg);
  position:relative;
}
.process-heading{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:30px;
  margin-bottom:52px;
  flex-wrap:wrap;
}
.process-heading .section-head{
  margin-bottom:0;
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:process;
}
.process-item{
  position:relative;
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  padding:32px 24px 24px;
  margin-top:32px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.process-item:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
}
 .process-item::before{
  counter-increment:process;
  content:counter(process,decimal-leading-zero);
  font-family:"Roboto Mono",ui-monospace,Menlo,monospace;
  font-size:14px;
  font-weight:700;
  color:#fff;
  background:var(--brand);
  width:38px;
  height:38px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:absolute;
  top:-19px;
  left:24px;
  box-shadow:0 6px 14px rgba(11,110,91,.2);
}
.process-item h3{
  font-size:18px;
  font-weight:800;
  color:var(--brand-deep);
  margin-bottom:10px;
}
.process-item p{
  font-size:14px;
  color:var(--text-soft);
  line-height:1.8;
}
.process-item .process-tag{
  display:inline-block;
  margin-top:18px;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:rgba(11,110,91,.08);
  border-radius:999px;
  padding:5px 12px;
}
.operation-section{
  background:var(--brand-deep);
  color:#D9E7E2;
}
.operation-head{
  text-align:center;
  max-width:720px;
  margin:0 auto 52px;
}
.operation-head .eyebrow{
  background:rgba(255,255,255,.08);
  color:#8FD9C4;
  border-color:rgba(255,255,255,.12);
}
.operation-head h2{
  color:#fff;
  font-size:34px;
  font-weight:800;
}
.operation-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.op-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  border-radius:18px;
  padding:26px 22px;
  transition:background .2s ease,transform .2s ease;
}
.op-card:hover{
  background:rgba(255,255,255,.09);
  transform:translateY(-4px);
}
.op-card i{
  font-size:22px;
  color:#7BD3BA;
  display:block;
  margin-bottom:18px;
}
.op-card h3{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:8px;
}
.op-card p{
  font-size:13px;
  color:rgba(255,255,255,.65);
  line-height:1.75;
}
.tech-tip{
  margin-top:44px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.52);
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
}
.faq-section{
  background:#fff;
}
.faq-wrap{
  max-width:900px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border);
  background:#fff;
  transition:background .2s ease;
}
.faq-item:first-child{
  border-top:1px solid var(--border);
}
.faq-question{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  padding:26px 8px;
  background:transparent;
  border:none;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--brand-deep);
  line-height:1.5;
}
.faq-question:hover{
  color:var(--brand);
}
.faq-question .faq-icon{
  min-width:32px;
  width:32px;
  height:32px;
  border-radius:50%;
  background:rgba(11,110,91,.08);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:400;
  font-size:20px;
  flex-shrink:0;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-question:focus-visible{
  outline:3px solid rgba(11,110,91,.35);
  outline-offset:4px;
}
.faq-item.open .faq-icon{
  transform:rotate(135deg);
  background:var(--brand);
  color:#fff;
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease,padding .3s ease;
  padding:0 8px;
}
.faq-item.open .faq-answer{
  max-height:420px;
  padding:0 8px 26px;
}
.faq-answer p{
  font-size:15px;
  color:var(--text-soft);
  line-height:1.9;
  padding-left:20px;
  border-left:3px solid rgba(11,110,91,.32);
}
.cta-band{
  padding:0 0 96px;
  background:var(--bg);
}
.cta-card{
  background:
    linear-gradient(115deg,rgba(10,46,40,.96) 0%,rgba(11,110,91,.88) 58%,rgba(11,110,91,.76) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-color:var(--brand-deep);
  border-radius:26px;
  padding:72px 64px;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  color:#fff;
  position:relative;
  overflow:hidden;
  box-shadow:0 20px 50px rgba(10,46,40,.18);
}
.cta-card::before{
  content:"";
  position:absolute;
  width:320px;
  height:320px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:50%;
  top:-160px;
  right:-80px;
}
.cta-card h2{
  font-size:34px;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:640px;
  line-height:1.3;
  margin-bottom:18px;
}
.cta-card p{
  font-size:16px;
  color:rgba(255,255,255,.82);
  max-width:640px;
  line-height:1.9;
  margin-bottom:34px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-bottom:22px;
}
.cta-note{
  font-size:13px;
  color:rgba(255,255,255,.6);
  display:flex;
  align-items:center;
  gap:6px;
  justify-content:center;
}
.site-footer{
  background:var(--brand-deep);
  color:#C3D2CC;
  padding:64px 0 0;
}
.footer-main{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr .8fr;
  gap:48px;
  padding-bottom:52px;
}
.footer-brand-title{
  font-size:22px;
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand-title span{
  font-weight:500;
  font-size:14px;
  color:#93A9A2;
  margin-left:4px;
}
.footer-about{
  font-size:14px;
  color:#93A9A2;
  line-height:1.9;
  max-width:380px;
  margin-bottom:20px;
}
.footer-heading{
  font-size:15px;
  font-weight:700;
  color:#F1F6F4;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  font-size:14px;
  color:#A5B7B1;
  transition:color .2s ease;
}
.footer-links a:hover{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-color:rgba(255,122,69,.5);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:#79908A;
}
@media (max-width:1024px){
  .hero-inner{
    grid-template-columns:1fr;
    gap:40px;
    padding:68px 0 80px;
  }
  .login-preview{
    margin-left:0;
    max-width:420px;
  }
  .hero-copy h1{
    font-size:44px;
  }
  .capability-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .capability-card.featured{
    grid-column:span 2;
  }
  .scenario-grid{
    grid-template-columns:1fr;
    gap:44px;
  }
  .process-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .operation-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-main{
    grid-template-columns:1fr 1fr;
    gap:40px;
  }
}
@media (max-width:640px){
  :root{
    --space-lg:72px;
    --space-md:44px;
  }
  .container{
    padding:0 20px;
  }
  .header-main{
    min-height:66px;
    flex-wrap:wrap;
    padding-top:10px;
    padding-bottom:10px;
  }
  .brand-name{
    font-size:23px;
  }
  .brand-tag{
    display:none;
  }
  .header-actions .btn-sm{
    font-size:13px;
    padding:9px 14px;
  }
  .channel-link{
    font-size:14px;
    padding:10px 16px 10px 4px;
    margin-right:6px;
  }
  .hero-copy h1{
    font-size:34px;
  }
  .hero-actions .btn{
    padding:13px 20px;
  }
  .section-head h2,
  .operation-head h2,
  .cta-card h2{
    font-size:26px;
  }
  .capability-grid{
    grid-template-columns:1fr;
  }
  .capability-card.featured{
    grid-column:span 1;
    display:block;
  }
  .capability-card.featured .icon-box{
    margin-bottom:18px;
  }
  .capability-list{
    grid-template-columns:1fr;
  }
  .scenario-list li{
    padding:14px;
  }
  .process-grid{
    grid-template-columns:1fr;
    gap:20px;
    padding-top:14px;
  }
  .process-item{
    margin-top:20px;
  }
  .operation-grid{
    grid-template-columns:1fr;
  }
  .cta-card{
    padding:44px 24px;
    border-radius:20px;
  }
  .cta-actions{
    flex-direction:column;
    width:100%;
  }
  .cta-actions .btn{
    width:100%;
  }
  .footer-main{
    grid-template-columns:1fr;
    gap:36px;
  }
  .footer-bottom{
    align-items:flex-start;
    flex-direction:column;
  }
}
@media (max-width:520px){
  .preview-verify{
    flex-direction:column;
    align-items:stretch;
  }
  .preview-verify small{
    text-align:center;
    padding:8px 12px;
  }
}

/* roulang page: article */
:root {
  --brand: #0B6E5B;
  --brand-dark: #0A2E28;
  --brand-soft: rgba(11, 110, 91, .08);
  --accent: #FF7A45;
  --accent-dark: #E5622E;
  --bg: #F7F5F1;
  --surface: #FFFFFF;
  --text: #1C2D28;
  --text-soft: #6B7A75;
  --border: #E8E2D8;
  --success: #16A34A;
  --warning: #D97706;
  --danger: #DC2626;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 12px rgba(10,46,40,.06);
  --shadow-lg: 0 12px 28px rgba(10,46,40,.12);
  --max: 1200px;
  --space-section: 96px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6, p, figure, blockquote, ul, ol, dl, dd {
  margin-top: 0;
  margin-bottom: 1rem;
}
h1, h2, h3 {
  line-height: 1.25;
  font-weight: 800;
}
h2 {
  font-size: 30px;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 20px;
  font-weight: 700;
}
p {
  color: var(--text);
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
}
img {
  max-width: 100%;
  display: block;
}
button, input, select, textarea {
  font: inherit;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255,122,69,.5);
  outline-offset: 3px;
  border-radius: 6px;
}
a:hover {
  color: var(--brand);
}
.container {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}
::selection {
  background: rgba(11,110,91,.2);
  color: var(--brand-dark);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  min-height: 44px;
  white-space: nowrap;
  text-decoration: none;
  transition: all .22s ease;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,122,69,.24);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border-color: var(--brand);
  color: var(--brand);
}
.btn-outline:hover {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  border-color: rgba(255,255,255,.55);
  color: #fff;
}
.btn-outline-dark:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  color: #fff;
}
.btn-sm {
  padding: 9px 18px;
  font-size: 13px;
  min-height: 40px;
  border-radius: 9px;
}

/* Tag / badge */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--brand-soft);
  color: var(--brand);
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-family: "SFMono-Regular", Consolas, "Roboto Mono", ui-monospace, monospace;
  font-size: 12px;
  font-weight: 600;
  background: var(--brand-soft);
  color: var(--brand);
}

/* Site header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
}
.header-main {
  justify-content: space-between;
  min-height: 72px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--brand);
}
.brand-tag {
  font-size: 12px;
  color: var(--text-soft);
  letter-spacing: .12em;
  margin-top: 4px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Channel navigation */
.channel-wrapper {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255,255,255,.94);
  border-top: 1px solid rgba(232,226,216,.6);
}
.channel-nav {
  display: flex;
  gap: 8px;
  min-height: 54px;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.channel-nav::-webkit-scrollbar {
  display: none;
}
.channel-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 3px solid transparent;
}
.channel-link:hover {
  color: var(--brand);
}
.channel-link.active {
  color: var(--brand);
}
.channel-link.active::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: -1px;
  height: 3px;
  border-radius: 4px 4px 0 0;
  background: var(--brand);
}

/* Main */
.site-main {
  padding-bottom: 40px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-soft);
  padding: 28px 0 18px;
  line-height: 1.4;
}
.breadcrumb a {
  color: var(--text-soft);
}
.breadcrumb a:hover {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.breadcrumb-sep {
  color: #B8C1BD;
  user-select: none;
}

/* Article Card */
.article-page {
  padding-bottom: 56px;
}
.article-shell {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: clamp(28px, 5vw, 68px) clamp(24px, 5vw, 76px);
}
.article-header {
  max-width: 840px;
  margin: 0 auto 32px;
  text-align: center;
}
.article-title {
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.32;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  overflow-wrap: break-word;
}
.article-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: var(--text-soft);
  font-size: 14px;
}
.article-meta .meta-link {
  color: var(--brand);
  font-weight: 600;
}
.article-content {
  max-width: 780px;
  margin: 0 auto;
  color: #34453F;
  font-size: 16px;
  line-height: 1.9;
  overflow-wrap: break-word;
}
.article-content p {
  color: #34453F;
  margin-bottom: 1.5rem;
}
.article-content h2,
.article-content h3,
.article-content h4 {
  margin: 2rem 0 1rem;
  color: var(--brand-dark);
}
.article-content h2 {
  font-size: 26px;
}
.article-content h3 {
  font-size: 21px;
}
.article-content a {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-color: rgba(11,110,91,.28);
  text-underline-offset: 4px;
}
.article-content a:hover {
  text-decoration-color: var(--brand);
}
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  margin: 32px auto;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  margin: 1.75rem 0;
  padding: 18px 24px;
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #435650;
}
.article-content ul,
.article-content ol {
  padding-left: 1.3rem;
  margin-bottom: 1.6rem;
}
.article-content li {
  margin-bottom: .5rem;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: rgba(11,110,91,.06);
  color: var(--brand-dark);
  font-weight: 700;
}
.article-content code {
  background: #F0EDE7;
  border-radius: 6px;
  padding: 2px 8px;
  font-family: "SFMono-Regular", Consolas, "Roboto Mono", monospace;
  font-size: .92em;
}
.article-content pre {
  background: var(--brand-dark);
  color: #EDF7F3;
  padding: 24px;
  border-radius: 14px;
  overflow-x: auto;
  line-height: 1.7;
  margin: 2rem 0;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 36px 0 0;
}
.article-footer {
  max-width: 780px;
  margin: 0 auto;
  padding-top: 28px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.article-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* Not found */
.notfound-wrap {
  padding: 80px 20px 40px;
}
.notfound-card {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 64px 36px;
}
.notfound-code {
  font-size: 72px;
  font-weight: 800;
  font-family: "SFMono-Regular", Consolas, "Roboto Mono", monospace;
  color: var(--brand);
  margin-bottom: 8px;
  letter-spacing: -0.04em;
}
.notfound-title {
  font-size: 30px;
  margin-bottom: 12px;
}
.notfound-text {
  color: var(--text-soft);
  margin-bottom: 28px;
}

/* Section headings */
.section {
  padding: var(--space-section) 0;
}
.section-head {
  max-width: 680px;
  margin-bottom: 44px;
}
.section-head h2 {
  margin-bottom: 10px;
}
.section-head p {
  color: var(--text-soft);
  margin-bottom: 0;
  font-size: 16px;
}
.section-head .tag {
  margin-bottom: 14px;
}

/* Resource / related cards */
.resource-section {
  background: var(--surface);
}
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .26s ease;
}
.resource-card:hover {
  transform: translateY(-5px);
  border-color: rgba(11,110,91,.32);
  box-shadow: var(--shadow-lg);
}
.resource-card:hover .resource-card-title {
  color: var(--brand);
}
.resource-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #E5EFEB, #C8D8D2);
  overflow: hidden;
}
.resource-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .44s ease;
}
.resource-card:hover .resource-cover img {
  transform: scale(1.04);
}
.resource-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}
.resource-card-title {
  font-size: 18px;
  font-weight: 700;
  margin: 12px 0 8px;
  line-height: 1.4;
  color: var(--brand-dark);
}
.resource-card-text {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 18px;
}
.resource-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  gap: 6px;
}
.resource-link::after {
  content: "→";
  transition: transform .22s ease;
}
.resource-card:hover .resource-link::after {
  transform: translateX(4px);
}

/* FAQ */
.faq-section {
  background: var(--bg);
}
.faq-layout {
  display: grid;
  grid-template-columns: .9fr 1.6fr;
  gap: 64px;
  align-items: start;
}
.faq-intro-title {
  margin-bottom: 10px;
}
.faq-intro-text {
  color: var(--text-soft);
  margin-bottom: 26px;
}
.faq-list {
  border-top: 1px solid var(--border);
}
details.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 6px 0;
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
  padding: 16px 6px;
  font-weight: 600;
  color: var(--brand-dark);
  font-size: 17px;
  line-height: 1.5;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::before {
  content: "+";
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  text-align: center;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 16px;
  line-height: 20px;
  font-weight: 700;
  transition: all .2s ease;
}
.faq-item[open] summary::before {
  content: "×";
  background: var(--brand);
  color: #fff;
}
.faq-item summary:hover {
  color: var(--brand);
}
.faq-answer {
  padding: 0 52px 20px 6px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}
.faq-more {
  margin-top: 28px;
}

/* CTA */
.cta-section {
  padding-bottom: var(--space-section);
}
.cta-banner {
  position: relative;
  border-radius: 26px;
  padding: 56px 52px;
  background:
    linear-gradient(105deg, rgba(10,46,40,.96) 0%, rgba(10,46,40,.78) 64%, rgba(11,110,91,.82) 100%),
    url("/assets/images/backpic/back-2.png") center / cover;
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-banner::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 50%;
  right: -80px;
  bottom: -110px;
}
.cta-content {
  position: relative;
  z-index: 1;
  flex: 1 1 360px;
}
.cta-content h2 {
  color: #fff;
  margin-bottom: 8px;
}
.cta-content p {
  color: rgba(255,255,255,.76);
  margin-bottom: 0;
  max-width: 620px;
}
.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Footer */
.site-footer {
  color: rgba(255,255,255,.72);
  background: var(--brand-dark);
  padding-top: 72px;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.1fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-brand-title {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-brand-title span {
  color: rgba(255,255,255,.55);
  font-weight: 500;
}
.footer-about {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  max-width: 360px;
}
.footer-heading {
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 14px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.footer-links a {
  color: rgba(255,255,255,.68);
  font-size: 14px;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 13px;
  color: rgba(255,255,255,.48);
}

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --space-section: 72px;
  }
  .header-main {
    min-height: 64px;
  }
  .resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .faq-intro {
    margin-bottom: 20px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .section {
    --space-section: 56px;
  }
  .channel-link {
    padding-inline: 16px;
  }
  .article-shell {
    padding: 28px 18px;
  }
  .article-title {
    font-size: 28px;
  }
  .article-content {
    line-height: 1.85;
  }
  .cta-banner {
    padding: 36px 26px;
  }
  .resource-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 600px) {
  .container {
    width: min(100% - 28px, var(--max));
  }
  .brand-name {
    font-size: 23px;
  }
  .brand-tag {
    font-size: 10px;
    letter-spacing: .06em;
  }
  .channel-wrapper {
    top: 0;
  }
  .channel-nav {
    min-height: 48px;
  }
  .channel-link {
    padding: 10px 14px;
    font-size: 14px;
  }
  .header-actions .btn-sm {
    padding: 8px 12px;
    font-size: 12px;
  }
  .resource-card-body {
    padding: 20px;
  }
  .faq-answer {
    padding: 0 18px 18px;
  }
  .site-footer {
    padding-top: 52px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #0B6E5B;
  --primary-dark: #085746;
  --primary-soft: rgba(11, 110, 91, .08);
  --dark: #0A2E28;
  --dark-soft: #123E36;
  --accent: #FF7A45;
  --accent-dark: #E5622E;
  --bg: #F7F5F1;
  --bg-white: #FFFFFF;
  --text: #1B2A26;
  --muted: #647670;
  --border: #E8E2D8;
  --success: #16A34A;
  --warning: #D97706;
  --error: #DC2626;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(10, 46, 40, .06);
  --shadow-lg: 0 12px 28px rgba(10, 46, 40, .14);
  --transition: all .25s ease;
  --container: 1200px;
  --space-lg: 96px;
  --space-md: 64px;
  --space-sm: 40px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(255, 122, 69, .4); outline-offset: 2px; border-radius: 4px; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  line-height: 1.2;
}
.brand-name {
  font-size: 26px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: .5px;
}
.brand-tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  border-left: 1px solid var(--border);
  padding-left: 10px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  min-height: 44px;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(255, 122, 69, .24); }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.6);
  color: #fff;
}
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-dark-outline {
  background: #fff;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-dark-outline:hover { background: var(--primary-soft); transform: translateY(-2px); }
.btn-sm { padding: 10px 18px; font-size: 14px; min-height: 40px; }

.channel-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  border-top: 1px solid #f1ece4;
  border-bottom: 0.5px solid rgba(10,46,40,.08);
}
.channel-nav {
  display: flex;
  align-items: stretch;
  gap: 6px;
  min-height: 52px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}
.channel-link:hover { color: var(--primary); background: rgba(11,110,91,.04); }
.channel-link.active { color: var(--primary); border-bottom-color: var(--primary); background: rgba(11,110,91,.05); }
.channel-link i { font-size: 12px; }

.site-footer {
  background: var(--dark);
  color: #C9D6D2;
  margin-top: var(--space-lg);
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 40px;
}
.footer-brand-title { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; letter-spacing: .5px; }
.footer-brand-title span { font-size: 13px; font-weight: 400; color: #90ADA6; }
.footer-about { font-size: 14px; line-height: 1.8; color: #9BB3AD; max-width: 360px; }
.footer-heading { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: #9BB3AD; transition: var(--transition); }
.footer-links a:hover { color: #FF9A72; padding-left: 4px; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 22px 0;
  font-size: 13px;
  color: #7FA29A;
}

.section { padding: var(--space-lg) 0; }
.section.section-alt { background: var(--bg-white); }
.section-head {
  max-width: 820px;
  margin-bottom: 52px;
}
.section-head.center { margin-inline: auto; text-align: center; }
.overline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 30px;
  padding: 7px 16px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: .5px;
}
.section-desc {
  margin-top: 16px;
  font-size: 17px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 780px;
}
.section-head.center .section-desc { margin-inline: auto; }

/* Hero */
.category-hero {
  background:
    radial-gradient(circle at 80% 10%, rgba(76,144,127,.15) 0, transparent 38%),
    linear-gradient(100deg, rgba(10, 46, 40, .94) 0%, rgba(10,46,40,.86) 100%),
    url("/assets/images/backpic/back-1.png") center / cover no-repeat;
  color: #fff;
  padding: 88px 0 72px;
  border-bottom-left-radius: 34px;
  border-bottom-right-radius: 34px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.14);
  padding: 7px 16px;
  border-radius: 30px;
  color: #BDE3D8;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-title {
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1.15;
  color: #fff;
  font-weight: 800;
  letter-spacing: .5px;
}
.hero-title .accent { color: #FFA37E; }
.hero-sub {
  font-size: 18px;
  line-height: 1.85;
  color: #C4D5D0;
  margin-top: 22px;
  max-width: 620px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.13);
}
.hero-points span {
  font-size: 14px;
  color: #BFD6D0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-points i { color: #7ED3BC; font-size: 12px; }

.hero-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  color: var(--text);
  box-shadow: 0 18px 46px rgba(4, 24, 20, .25);
}
.hero-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #eee8df;
  padding-bottom: 14px;
  margin-bottom: 18px;
}
.hero-card-title i { color: var(--primary); font-size: 20px; }
.quick-list { display: grid; gap: 14px; }
.quick-list li {
  font-size: 15px;
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  color: #2A3D38;
}
.quick-list .label {
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  background: var(--primary-soft);
  border-radius: 6px;
  padding: 2px 8px;
  align-self: start;
  text-align: center;
}
.quick-list .value { line-height: 1.7; }
.protocol-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid #eee8df;
}
.protocol-tags span {
  font-family: var(--font-mono);
  font-size: 12px;
  background: #F2EFE9;
  border-radius: 6px;
  padding: 5px 8px;
  color: var(--dark);
}

/* applicable split */
.split-wrap {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 62px;
  align-items: center;
}
.split-media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.split-media img { width: 100%; height: 520px; object-fit: cover; }
.split-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(10,46,40,.15), transparent 60%); }
.left-copy .section-title { margin-top: 4px; }
.check-list { margin-top: 24px; display: grid; gap: 16px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 16px; line-height: 1.7; color: var(--text); }
.check-list i { color: var(--primary); margin-top: 3px; }
.approach-note {
  margin-top: 26px;
  background: #F2EFE9;
  border-left: 4px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  color: var(--muted);
  font-size: 15px;
}

/* solution cards */
.solution-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr .9fr;
  grid-template-rows: auto auto;
  gap: 24px;
}
.solution-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  min-height: 210px;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.solution-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(11,110,91,.3);
}
.solution-card.card-wide {
  grid-column: span 1;
  grid-row: span 2;
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
  justify-content: flex-end;
}
.solution-card.card-wide .card-ico { color: #BDE3D8; }
.solution-card.card-wide .card-title { color: #fff; }
.solution-card.card-wide .card-text { color: #BFD3CD; }
.solution-card.card-wide:hover { background: #0D382F; border-color: #0D382F; }
.solution-card h3 { margin-top: 14px; }
.card-ico { font-size: 22px; color: var(--primary); width: 46px; height: 46px; background: var(--primary-soft); border-radius: 12px; display: flex; align-items: center; justify-content: center; }
.solution-card.card-wide .card-ico { background: rgba(255,255,255,.1); }
.card-title { color: var(--dark); font-size: 20px; font-weight: 700; margin-top: 16px; }
.card-text { color: var(--muted); font-size: 15px; line-height: 1.75; margin-top: 10px; }
.soft-list { margin-top: 18px; display: grid; gap: 10px; }
.soft-list li { color: #BFD3CD; font-size: 15px; display: flex; gap: 8px; align-items: center; }
.soft-list i { color: #7ED3BC; }
.inline-link {
  margin-top: 18px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px dashed rgba(11,110,91,.4);
  align-self: flex-start;
  transition: var(--transition);
}
.inline-link:hover { color: var(--accent-dark); border-color: var(--accent-dark); }
.card-wide .inline-link { color: #fff; border-bottom-color: rgba(255,255,255,.6); }
.card-wide .inline-link:hover { color: #FFA37E; }

/* service badge */
.service-badge-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.service-badge {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  text-align: left;
  text-decoration: none;
  transition: var(--transition);
}
.service-badge:hover { border-color: rgba(11, 110, 91, .35); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.service-badge .badge-num { font-family: var(--font-mono); font-size: 34px; font-weight: 800; color: var(--primary); line-height: 1; }
.service-badge .badge-label { margin-top: 6px; font-size: 15px; font-weight: 600; color: var(--dark); }

/* process */
.process-area { background: var(--dark); color: #fff; border-radius: 32px; padding: 72px 56px; position: relative; overflow:hidden; }
.process-area::before { content: ""; position: absolute; width: 300px; height: 300px; background: rgba(127,211,188,.08); filter: blur(24px); right: -100px; top: -80px; border-radius: 50%; }
.process-title { font-size: 34px; font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.process-desc { color: #BFD3CD; max-width: 700px; margin-bottom: 48px; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  counter-reset: step;
  position: relative;
  z-index: 2;
}
.process-step {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 18px;
  padding: 22px 18px;
  counter-increment: step;
  transition: var(--transition);
}
.process-step:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.process-step::before {
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: #7ED3BC;
  display: block;
  margin-bottom: 10px;
}
.process-step h4 { font-size: 16px; font-weight: 600; line-height: 1.4; margin-top: 12px; }
.process-step p { font-size: 14px; color: #AFC4BE; margin-top: 8px; line-height: 1.65; }
.process-note {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  background: rgba(255,255,255,.08);
  border-radius: 14px;
  padding: 16px 22px;
  color: #D7E5E1;
  font-size: 15px;
}
.process-note i { color: #FFA37E; }

/* security extra */
.extra-security {
  background: #F2EFE9;
  border-radius: 22px;
  padding: 28px 30px;
  margin-top: 48px;
  display: flex;
  gap: 28px;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  font-size: 15px;
}
.extra-security strong { color: var(--dark); font-size: 16px; }
.extra-security i { color: var(--primary); margin-right: 6px; }
.extra-security .mini-chip { display:inline-flex; align-items:center; gap:8px; }

/* FAQ */
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid #ddd5ca; }
.faq-item details > summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 4px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  transition: var(--transition);
}
.faq-item summary:hover { color: var(--primary); }
.faq-item summary i {
  width: 24px;
  height: 24px;
  font-size: 15px;
  color: var(--primary);
  border: 1.5px solid var(--border);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  transition: transform .25s;
}
.faq-item details[open] > summary { color: var(--primary); }
.faq-item details[open] > summary i { transform: rotate(45deg); background: var(--primary); color: #fff; border-color: var(--primary); }
.faq-item .faq-a { padding: 0 4px 24px; color: var(--muted); line-height: 1.9; font-size: 16px; }

/* CTA */
.cta-panel {
  position: relative;
  background: var(--dark);
  background-image: radial-gradient(circle at 85% 20%, rgba(127,211,188,.1) 0, transparent 32%), url("/assets/images/backpic/back-3.webp");
  background-size: cover;
  border-radius: 28px;
  padding: 68px 56px;
  color: #fff;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
  gap: 40px;
}
.cta-title { font-size: clamp(28px, 3vw, 42px); font-weight: 800; line-height: 1.25; }
.cta-desc { margin-top: 18px; color: #C4D7D1; font-size: 17px; max-width: 680px; line-height: 1.8; }
.cta-actions { text-align: right; }
.cta-note { margin-top: 14px; font-size: 13px; color: #9BB3AD; }

@media (max-width: 1024px) {
  .container { width: min(var(--container), 100% - 36px); }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .solution-grid { grid-template-columns: 1fr 1fr; }
  .solution-card.card-wide { grid-row: auto; }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-panel { grid-template-columns: 1fr; text-align: left; }
  .cta-actions { text-align: left; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .split-wrap { grid-template-columns: 1fr; }
  .split-media img { height: 350px; }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  :root { --space-lg: 64px; --space-md: 44px; }
  .brand-name { font-size: 22px; }
  .brand-tag { display: none; }
  .header-main { padding: 12px 0; }
  .channel-nav { min-height: 48px; }
  .channel-link { padding: 0 14px; font-size: 15px; }
  .contact-header-btn { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .category-hero { padding-top: 56px; padding-bottom: 52px; }
  .hero-title { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .service-badge-row { grid-template-columns: repeat(2, 1fr); }
  .solution-grid { grid-template-columns: 1fr; }
  .feature-card.feature-last { margin-top: 0; }
  .process-area { padding: 48px 26px; }
  .process-grid { grid-template-columns: 1fr; }
  .process-title { font-size: 30px; }
  .faq-item details > summary { font-size: 16px; }
  .cta-panel { padding: 44px 26px; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; }
}

@media (max-width: 540px) {
  .container { width: min(100% - 24px, 100%); }
  .header-actions .btn-sm { display: none; }
  .section-title { font-size: 28px; }
  .overview-badge span { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .quick-list li { grid-template-columns: 80px 1fr; gap: 8px; font-size: 14px; }
  .service-badge-row { gap: 12px; }
  .service-badge { padding: 16px; }
  .service-badge .badge-num { font-size: 26px; }
  .split-media img { height: 260px; }
  .category-hero { border-bottom-left-radius: 18px; border-bottom-right-radius: 18px; }
  .channel-wrapper { position: relative; }
}