/* roulang page: index */
:root {
  --primary: #2E6E87;
  --primary-dark: #205767;
  --secondary: #0E7C66;
  --secondary-light: #E4F2EE;
  --bg: #F4F8FB;
  --surface: #FFFFFF;
  --accent: #D9772B;
  --accent-dark: #BF6320;
  --accent-light: #FDF1E5;
  --text: #1B3449;
  --text-secondary: #5A7186;
  --text-muted: #8CA0AE;
  --border: #DCE7EF;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-modal: 20px;
  --radius-img: 12px;
  --shadow-card: 0 2px 8px rgba(27,52,73,.06);
  --shadow-hover: 0 14px 28px rgba(27,52,73,.12);
  --shadow-nav: 0 4px 16px rgba(27,52,73,.08);
  --shadow-modal: 0 24px 48px rgba(27,52,73,.18);
  --transition: all .25s ease;
  --container: 1200px;
  --section-space: 96px;
  --font-main: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-img);
}

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

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

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

section {
  scroll-margin-top: 80px;
}

.section {
  padding: 96px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.section-head .section-sub {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ===== NAV ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220,231,239,.6);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
  border-bottom-color: transparent;
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(46,110,135,.3);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .02em;
  white-space: nowrap;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 2px;
  position: relative;
  line-height: 1.4;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

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

.nav-search {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-search:hover {
  background: rgba(46,110,135,.08);
  color: var(--primary);
}

.nav-cta {
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: .02em;
  transition: var(--transition);
  border: none;
  line-height: 1;
}

.nav-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(46,110,135,.25);
}

.nav-cta:active {
  transform: translateY(0);
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

.mobile-menu {
  display: none;
  background: var(--surface);
  padding: 12px 24px 24px;
  border-top: 1px solid var(--border);
}

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

.mobile-menu .nav-links {
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.mobile-menu .nav-link {
  width: 100%;
  padding: 12px 8px;
  font-size: 16px;
  border-radius: 8px;
}

.mobile-menu .nav-link:hover {
  background: var(--bg);
}

.mobile-menu .nav-link.active {
  background: var(--secondary-light);
}

.mobile-menu .nav-cta {
  width: 100%;
  margin-top: 12px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  min-height: 92vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #F4F8FB 0%, #EAF1F6 55%, #E2EDF2 100%);
  overflow: hidden;
  padding: 80px 0 60px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46,110,135,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,110,135,.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 70px;
  background: var(--bg);
  clip-path: ellipse(75% 100% at 50% 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.hero-content {
  max-width: 620px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 24px;
}

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

.hero h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 18px;
}

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

.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: var(--transition);
  border: none;
  line-height: 1;
}

.btn:focus-visible,
.nav-cta:focus-visible,
.nav-search:focus-visible,
.burger:focus-visible,
.btn-outline:focus-visible,
.btn-accent:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(217,119,43,.3);
}

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

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

.btn-outline:hover {
  background: rgba(46,110,135,.08);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
}

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

.btn-block {
  width: 100%;
}

.btn-sm {
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-points span::before {
  content: "✓";
  color: var(--secondary);
  font-weight: 700;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  border-radius: 20px;
  box-shadow: 0 24px 48px rgba(27,52,73,.14);
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-visual::after {
  content: "";
  position: absolute;
  top: 18px;
  right: -18px;
  width: 120px;
  height: 120px;
  border: 2px dashed rgba(46,110,135,.25);
  border-radius: 24px;
  z-index: -1;
}

/* ===== PAIN SECTION ===== */
.pain-section {
  padding: var(--section-space) 0 72px;
}

.pain-layout {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 48px;
  align-items: center;
}

.pain-title h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 14px;
}

.pain-title p {
  color: var(--text-secondary);
  font-size: 15px;
}

.pain-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pain-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: var(--transition);
  border: 1px solid transparent;
}

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

.pain-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--secondary-light);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.pain-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.pain-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== SOLUTIONS ===== */
.solutions-section {
  padding: 72px 0 var(--section-space);
}

.solutions-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 24px;
  align-items: stretch;
}

.sol-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.solution-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
}

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

.solution-card.multi {
  background: linear-gradient(145deg, var(--surface) 60%, var(--secondary-light) 150%);
}

.sol-badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--secondary-light);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
  align-self: flex-start;
}

.sol-badge.orange {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.solution-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.solution-card > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.sol-list {
  list-style: none;
  margin-bottom: 22px;
}

.sol-list li {
  padding: 7px 0 7px 26px;
  position: relative;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.sol-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--secondary);
  border-radius: 50%;
}

.sol-list li.orange::before {
  border-color: var(--accent);
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
}

.arrow-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

.sol-card-wide {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
}

.sol-card-wide:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--border);
}

.sol-card-wide::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(217,119,43,.08) 0%, transparent 70%);
  border-radius: 50%;
}

.sol-card-wide .solution-card-img {
  margin: 6px -32px -32px;
  margin-top: 20px;
}

.sol-card-wide .solution-card-img img {
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  width: 100%;
  max-height: 220px;
  object-fit: cover;
}

/* ===== DATA SECTION ===== */
.data-section {
  padding: 72px 0;
  background: var(--secondary-light);
  position: relative;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.data-item {
  padding: 16px 8px;
}

.data-item .data-num {
  font-size: clamp(32px, 6vw, 54px);
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}

.data-item .data-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.data-item .data-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== NEWS SECTION ===== */
.news-section {
  padding: var(--section-space) 0;
}

.news-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--secondary-light);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge.accent {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.news-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 24px;
  align-items: stretch;
}

.news-feature {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  border: 1px solid transparent;
}

.news-feature:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--border);
}

.news-feature-img {
  aspect-ratio: 16 / 8;
  overflow: hidden;
}

.news-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform .5s ease;
}

.news-feature:hover .news-feature-img img {
  transform: scale(1.04);
}

.news-feature-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-feature-body .badge {
  align-self: flex-start;
  margin-bottom: 12px;
}

.news-feature-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-feature-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.news-meta time {
  font-size: 13px;
  color: var(--text-muted);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  padding: 8px 0;
}

.news-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: transparent;
  transition: var(--transition);
}

.news-list-item:last-child {
  border-bottom: none;
}

.news-list-item:hover {
  background: var(--bg);
  padding-left: 28px;
}

.news-list-main {
  flex: 1;
  min-width: 0;
}

.news-list-main h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-list-main p {
  font-size: 13px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}

.news-list-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.news-list-meta time {
  font-size: 12px;
  color: var(--text-muted);
}

.news-list-meta .badge {
  font-size: 11px;
  padding: 3px 10px;
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 64px 24px;
}

.news-empty .empty-icon {
  font-size: 44px;
  margin-bottom: 16px;
}

.news-empty h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

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

/* ===== FAQ ===== */
.faq-section {
  padding: 0 0 var(--section-space);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid transparent;
}

.faq-item:hover {
  border-color: var(--border);
}

.faq-item.open {
  box-shadow: var(--shadow-hover);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  min-height: 56px;
  transition: var(--transition);
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--secondary-light);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  flex-shrink: 0;
  transform: rotate(0deg);
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--accent-light);
  color: var(--accent-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 92%;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 var(--section-space);
}

.cta-box {
  background: var(--primary-dark);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 28px 28px;
}

.cta-box-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.4;
}

.cta-box p {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  line-height: 1.7;
}

.cta-box .btn-accent {
  min-height: 48px;
  padding: 0 36px;
  font-size: 16px;
}

.privacy-entry {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,.65);
}

.privacy-entry a {
  color: rgba(255,255,255,.85);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.privacy-entry a:hover {
  color: #fff;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.8);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 22px;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .logo-text span {
  color: #7FBFD4;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.65);
  max-width: 340px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col a {
  color: rgba(255,255,255,.65);
  font-size: 14px;
  line-height: 1.6;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
}

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

.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,.65);
  padding-left: 0;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

.footer-bottom a {
  color: rgba(255,255,255,.65);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(27,52,73,.45);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius-modal);
  box-shadow: var(--shadow-modal);
  max-width: 540px;
  width: 100%;
  padding: 40px;
  position: relative;
  animation: modalIn .3s ease;
  max-height: 92vh;
  overflow-y: auto;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  line-height: 1;
}

.modal-close:hover {
  background: var(--accent-light);
  color: var(--accent-dark);
  transform: rotate(90deg);
}

.modal h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group label em {
  color: var(--accent);
  font-style: normal;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 44px;
  border: 1px solid #D0DCE4;
  border-radius: var(--radius-input);
  padding: 0 14px;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  transition: var(--transition);
  appearance: auto;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,110,135,.2);
}

.form-group input::placeholder {
  color: var(--text-muted);
  font-size: 14px;
}

.captcha-row {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 10px;
}

.privacy-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 16px;
  text-align: center;
  line-height: 1.6;
}

.privacy-note a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-success {
  text-align: center;
  padding: 32px 0 8px;
  display: none;
}

.form-success.show {
  display: block;
}

.form-success .success-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--secondary-light);
  color: var(--secondary);
  font-size: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.form-success p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.form-error {
  display: none;
  background: #FDECEC;
  color: #B33737;
  font-size: 13px;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.form-error.show {
  display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1080px) {
  .container {
    padding: 0 24px;
  }

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

  .hero-visual {
    max-width: 560px;
    margin: 0 auto;
  }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

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

  .sol-card-wide .solution-card-img {
    margin: 6px 0 -32px;
  }

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

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

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

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

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 56px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 32px;
  }

  .nav-links,
  .nav-actions .nav-cta,
  .nav-search {
    display: none;
  }

  .burger {
    display: flex;
  }

  .hero h1 {
    font-size: clamp(28px, 8vw, 36px);
  }

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

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

  .hero-points {
    flex-direction: column;
    gap: 10px;
  }

  .hero-visual::after {
    display: none;
  }

  .pain-card {
    padding: 20px;
    flex-direction: column;
    gap: 12px;
  }

  .solution-card,
  .sol-card-wide {
    padding: 24px 20px;
  }

  .news-feature-body {
    padding: 20px;
  }

  .news-list-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px;
  }

  .news-list-meta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .cta-box {
    padding: 40px 24px;
    border-radius: 16px;
  }

  .cta-box p {
    font-size: 14px;
  }

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

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

  .modal {
    padding: 28px 20px;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 28px;
    line-height: 1.4;
  }

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

  .data-item .data-num {
    font-size: 34px;
  }

  .faq-question {
    font-size: 15px;
    padding: 16px;
  }

  .faq-answer-inner {
    padding: 0 16px 18px;
  }

  .captcha-row {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 0 18px;
  }

  .hero-cta {
    gap: 10px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #2E6E87;
  --primary-dark: #205767;
  --accent: #0E7C66;
  --accent-light: #E4F2EE;
  --bg: #F4F8FB;
  --surface: #FFFFFF;
  --cta: #D9772B;
  --cta-hover: #BF6320;
  --cta-light: #FDF1E5;
  --text: #1B3449;
  --text-sub: #5A7186;
  --text-weak: #8CA0AE;
  --border: #DCE7EF;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(27,52,73,.06);
  --shadow-hover: 0 14px 28px rgba(27,52,73,.12);
  --shadow-nav: 0 4px 16px rgba(27,52,73,.08);
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
input,select,textarea{font-family:inherit;font-size:14px}
[hidden]{display:none!important}
.container{width:min(1200px,100% - 48px);margin-inline:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;letter-spacing:.02em;transition:all .25s ease;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:#EAF1F6;transform:translateY(-2px)}
.btn-cta{background:var(--cta);color:#fff}
.btn-cta:hover{background:var(--cta-hover);transform:translateY(-2px);box-shadow:0 10px 22px rgba(217,119,43,.28)}
.btn-block{width:100%}
.btn-lg{height:52px;padding:0 36px;font-size:16px}

/* ========= Header ========= */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.55);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,231,239,.6);transition:all .3s ease}
.site-header.scrolled{background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:var(--shadow-nav)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;box-shadow:0 4px 10px rgba(46,110,135,.22)}
.logo-text{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.01em}
.logo-text span{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{font-size:15px;font-weight:500;color:var(--text-sub);position:relative;padding:6px 2px;transition:color .25s ease}
.nav-link::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;border-radius:2px;background:var(--primary);transform:translateX(-50%);transition:width .25s ease}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{width:24px}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:var(--text-sub);transition:all .25s ease}
.nav-search:hover{background:var(--accent-light);color:var(--primary)}
.nav-cta{background:var(--primary);color:#fff;height:42px;padding:0 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:all .25s ease}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 14px rgba(46,110,135,.25)}
.burger{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:all .3s ease}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;position:fixed;top:72px;left:0;right:0;background:#fff;box-shadow:var(--shadow-nav);padding:20px;border-radius:0 0 20px 20px;z-index:99}
.mobile-menu.open{display:block}
.mobile-menu .nav-links{flex-direction:column;align-items:flex-start;gap:16px;padding:8px 0 20px}
.mobile-menu .nav-cta{width:100%;height:46px}

/* ========= Page Hero ========= */
.page-hero{padding:146px 0 64px;background:linear-gradient(180deg,#F4F8FB 0%,#EAF1F6 100%);background-image:linear-gradient(rgba(46,110,135,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(46,110,135,.045) 1px,transparent 1px);background-size:36px 36px;background-blend-mode:overlay}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-sub);margin-bottom:28px}
.breadcrumb a{color:var(--text-sub);transition:color .25s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-weak)}
.breadcrumb .current{color:var(--text);font-weight:500}
.hero-split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-text h1{font-size:clamp(30px,4vw,44px);line-height:1.35;font-weight:700;color:var(--text);margin-bottom:20px;letter-spacing:.01em}
.hero-text p{font-size:16px;line-height:1.75;color:var(--text-sub);margin-bottom:28px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.hero-image{position:relative}
.hero-image img{width:100%;height:auto;border-radius:24px;box-shadow:0 18px 36px rgba(27,52,73,.16);border:1px solid rgba(255,255,255,.6)}
.hero-image::before{content:"";position:absolute;inset:18px -18px -18px 18px;background:linear-gradient(135deg,rgba(46,110,135,.14),rgba(217,119,43,.1));border-radius:28px;z-index:-1}

/* ========= Split Section ========= */
.split-section{padding:72px 0 80px}
.split-layout{display:grid;grid-template-columns:minmax(0,1fr) 348px;gap:40px;align-items:start}
.content-main{display:flex;flex-direction:column;gap:48px;min-width:0}
.block-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.section-head{margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;color:var(--text)}
.section-head p{margin-top:8px;font-size:14px;color:var(--text-sub)}
.badge{display:inline-block;background:var(--accent-light);color:var(--accent);font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;margin-bottom:14px;letter-spacing:.04em}

/* ========= Prepare Cards ========= */
.prepare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.mini-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:22px;background:var(--surface);transition:all .25s ease}
.mini-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.mini-card .card-icon{width:42px;height:42px;border-radius:12px;background:var(--accent-light);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.mini-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.mini-card p{font-size:14px;color:var(--text-sub);line-height:1.6}

/* ========= Steps ========= */
.steps{display:flex;flex-direction:column}
.step-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--border);transition:background .25s}
.step-item:last-child{border-bottom:none}
.step-num{flex-shrink:0;width:42px;height:42px;border-radius:14px;background:var(--primary);color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(46,110,135,.18)}
.step-body h3{font-size:17px;font-weight:600;margin-bottom:4px}
.step-body p{font-size:14px;color:var(--text-sub);line-height:1.65}

/* ========= Table ========= */
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table th{background:#EAF1F6;color:var(--text);font-weight:600;text-align:left;padding:14px 16px;border-bottom:2px solid var(--border)}
.spec-table td{padding:14px 16px;border-bottom:1px solid var(--border);color:var(--text-sub);line-height:1.6}
.spec-table tr:last-child td{border-bottom:none}
.spec-table tr:hover td{background:#F8FBFD}

/* ========= Update Box ========= */
.update-box{display:flex;gap:16px;background:var(--cta-light);border:1px solid rgba(217,119,43,.18);border-radius:var(--radius-md);padding:20px}
.update-box .update-icon{flex-shrink:0;width:40px;height:40px;border-radius:10px;background:#fff;color:var(--cta);display:flex;align-items:center;justify-content:center}
.update-box h3{font-size:15px;font-weight:600;margin-bottom:4px}
.update-box p{font-size:14px;color:var(--text-sub);line-height:1.65}

/* ========= Sidebar ========= */
.sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:92px}
.side-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}
.side-card img{width:100%;border-radius:14px;margin-bottom:16px;aspect-ratio:16/9;object-fit:cover}
.side-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.side-card p{font-size:14px;color:var(--text-sub);line-height:1.65;margin-bottom:14px}
.side-card .btn{margin-top:4px}
.side-cta-card{background:linear-gradient(160deg,#fff 60%,#EAF1F6)}
.check-list{display:flex;flex-direction:column;gap:10px}
.check-list li{position:relative;padding-left:26px;font-size:14px;color:var(--text-sub);line-height:1.6}
.check-list li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center}
.check-list li::after{content:"✓";position:absolute;left:3px;top:3px;font-size:12px;color:var(--accent);font-weight:700}
.side-contact h3{color:var(--primary)}
.side-contact a{font-size:14px;color:var(--primary);font-weight:600}
.side-contact p{font-size:13px;color:var(--text-weak);margin-bottom:4px}

/* ========= FAQ ========= */
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:box-shadow .25s ease}
.faq-item.open{box-shadow:var(--shadow-hover)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);text-align:left;transition:background .25s}
.faq-q:hover{background:#F8FBFD}
.faq-icon{position:relative;width:24px;height:24px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .3s ease}
.faq-icon::before{width:16px;height:2px;top:11px;left:4px}
.faq-icon::after{width:2px;height:16px;top:4px;left:11px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:0 20px 20px;font-size:14px;color:var(--text-sub);line-height:1.7}

/* ========= CTA Section ========= */
.cta-section{padding:64px 0;background:var(--primary-dark);background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:32px 32px}
.cta-inner{text-align:center;max-width:640px;margin-inline:auto}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,32px);font-weight:700;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.82);font-size:16px;margin-bottom:28px;line-height:1.7}
.cta-inner .btn{min-width:180px;height:52px;font-size:16px}
.cta-inner .btn-cta{background:var(--cta);color:#fff}
.cta-inner .btn-cta:hover{background:#E8862F;transform:translateY(-3px);box-shadow:0 12px 26px rgba(0,0,0,.24)}

/* ========= Footer ========= */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.82);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand .logo-text{color:#fff;display:inline-flex;align-items:center;gap:8px;font-size:20px;font-weight:700;margin-bottom:14px}
.footer-brand .logo-icon{background:#fff;color:var(--primary-dark);width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700}
.footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;transition:color .25s}
.footer-col a:hover{color:var(--accent-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13px;color:rgba(255,255,255,.52)}

/* ========= Modal ========= */
.modal-wrap{display:none;position:fixed;inset:0;z-index:200;align-items:center;justify-content:center;padding:24px}
.modal-wrap.open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(27,52,73,.45);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.modal-box{position:relative;z-index:1;background:#fff;width:min(540px,100%);border-radius:var(--radius-lg);padding:36px;box-shadow:0 24px 48px rgba(27,52,73,.18);animation:modalIn .3s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(-12px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-close{position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--text-weak);transition:all .25s}
.modal-close:hover{background:#F0F5F9;color:var(--text)}
.modal-box h3{font-size:22px;font-weight:700;color:var(--text);margin-bottom:8px}
.modal-sub{font-size:14px;color:var(--text-sub);margin-bottom:24px;line-height:1.6}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:6px}
.form-group .required{color:var(--cta)}
.form-group input,.form-group select{width:100%;height:44px;border:1px solid #D0DCE4;border-radius:10px;padding:0 14px;font-size:14px;color:var(--text);background:#fff;transition:border-color .25s,box-shadow .25s}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,110,135,.18)}
.form-group input::placeholder{color:var(--text-weak)}
.btn-cta.btn-block{height:48px;font-size:15px}
.privacy-note{margin-top:16px;font-size:12px;color:var(--text-weak);text-align:center;line-height:1.6}
.privacy-link{color:var(--primary);cursor:pointer;border-bottom:1px dashed var(--primary)}
.form-success{text-align:center;padding:24px 0}
.success-icon{width:56px;height:56px;border-radius:50%;background:var(--accent-light);color:var(--accent);font-size:28px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px}
.form-success h4{font-size:20px;font-weight:700;margin-bottom:6px}
.form-success p{font-size:14px;color:var(--text-sub);margin-bottom:24px}

/* ========= Search Modal ========= */
.modal-search .modal-box{max-width:480px}
.search-form{display:flex;gap:10px;margin-bottom:18px}
.search-form input{flex:1;height:44px;border:1px solid #D0DCE4;border-radius:10px;padding:0 14px;font-size:14px}
.search-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,110,135,.18)}
.search-hints{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--text-weak)}
.search-hints a{background:#F0F5F9;color:var(--primary);padding:6px 14px;border-radius:16px;font-size:13px;transition:all .25s}
.search-hints a:hover{background:var(--primary);color:#fff}

/* ========= Responsive ========= */
@media (max-width: 1024px){
  .split-layout{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
  .prepare-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 768px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .nav-search{display:flex}
  .hero-split{grid-template-columns:1fr;gap:28px}
  .page-hero{padding:120px 0 44px}
  .split-layout{grid-template-columns:1fr}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 100%}
  .prepare-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%;justify-content:center}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .block-section{padding:24px 20px}
  .modal-box{padding:28px 20px}
  .steps gap{padding:18px 0}
}
@media (max-width: 520px){
  .container{width:min(100% - 32px,1200px)}
  .logo-text{font-size:18px}
  .spec-table{display:block;overflow-x:auto;white-space:nowrap}
  .nav-actions{gap:6px}
  .search-form{flex-direction:column}
  .search-form .btn{width:100%}
}

/* roulang page: article */
:root {
  --primary: #2E6E87;
  --primary-dark: #205767;
  --secondary: #0E7C66;
  --secondary-light: #E4F2EE;
  --bg: #F4F8FB;
  --surface: #FFFFFF;
  --accent: #D9772B;
  --accent-dark: #BF6320;
  --accent-light: #FDF1E5;
  --text-main: #1B3449;
  --text-sub: #5A7186;
  --text-weak: #8CA0AE;
  --border: #DCE7EF;
  --link: #2E6E87;
  --shadow-card: 0 2px 8px rgba(27,52,73,.06);
  --shadow-card-hover: 0 14px 28px rgba(27,52,73,.12);
  --shadow-nav: 0 4px 16px rgba(27,52,73,.08);
  --radius-btn: 8px;
  --radius-card: 16px;
  --radius-input: 10px;
  --font: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: 1rem; }
button { cursor: pointer; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: all .25s ease;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: #EAF1F6; transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--secondary-light);
  color: var(--secondary);
}
.tag-accent { background: var(--accent-light); color: var(--accent-dark); }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220,231,239,.6);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
  border-bottom-color: transparent;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}
.logo-text { font-size: 20px; font-weight: 700; color: var(--text-main); letter-spacing: .02em; }
.logo-text span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; margin: 0; padding: 0; }
.nav-links .nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 8px 2px;
  transition: color .25s;
}
.nav-links .nav-link:hover { color: var(--primary); }
.nav-links .nav-link.active { color: var(--primary); font-weight: 600; }
.nav-links .nav-link.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-search {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.7);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .25s;
}
.nav-search:hover { border-color: var(--primary); color: var(--primary); background: rgba(255,255,255,.95); }
.nav-cta {
  height: 42px;
  padding: 0 22px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s;
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-card-hover); }
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.burger span { width: 18px; height: 2px; background: var(--primary); transition: all .3s; }
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  box-shadow: var(--shadow-nav);
  padding: 24px;
  border-top: 1px solid var(--border);
  z-index: 999;
}
.mobile-menu.open { display: block; }
.mobile-menu .nav-links { display: flex; flex-direction: column; align-items: stretch; gap: 4px; }
.mobile-menu .nav-link { display: block; padding: 14px 6px; font-size: 16px; border-bottom: 1px solid var(--border); }
.mobile-menu .nav-link.active { color: var(--primary); font-weight: 700; }
.mobile-menu .nav-cta { width: 100%; margin-top: 16px; }
.page-banner {
  margin-top: 72px;
  background: linear-gradient(120deg, rgba(46,110,135,.96), rgba(32,87,103,.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 56px 0 44px;
  color: #fff;
  position: relative;
}
.page-banner .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.75);
  margin-bottom: 18px;
}
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .current {
  color: #fff;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.page-banner-tag { margin: 0; font-size: 15px; font-weight: 500; color: rgba(255,255,255,.9); letter-spacing: .1em; }
main { background: var(--bg); }
.article-section { padding: 48px 0 64px; }
.article-card {
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 56px;
  border: 1px solid rgba(220,231,239,.6);
}
.article-title {
  margin: 0 0 18px;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-main);
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.meta-item { font-size: 14px; color: var(--text-sub); display: inline-flex; align-items: center; gap: 6px; }
.meta-divider { color: var(--text-weak); }
.article-content { font-size: 16px; line-height: 1.85; color: var(--text-main); }
.article-content p { margin: 0 0 1.2em; text-indent: 2em; }
.article-content h2 { font-size: 24px; font-weight: 700; margin: 1.8em 0 .8em; color: var(--text-main); }
.article-content h3 { font-size: 19px; font-weight: 600; margin: 1.4em 0 .6em; color: var(--text-main); }
.article-content ul,
.article-content ol { margin: 0 0 1.2em; padding-left: 1.6em; }
.article-content li { margin-bottom: .4em; }
.article-content blockquote {
  margin: 1.2em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--primary);
  background: rgba(244,248,251,.8);
  border-radius: 0 12px 12px 0;
  color: var(--text-sub);
}
.article-content img {
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  margin: 1.4em 0;
}
.article-content a { border-bottom: 1px solid rgba(46,110,135,.3); }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.2em 0; }
.article-content th,
.article-content td { border: 1px solid var(--border); padding: 10px 14px; }
.article-content th { background: var(--secondary-light); color: var(--text-main); }
.article-content pre,
.article-content code { background: #EEF3F7; border-radius: 6px; font-size: .92em; }
.article-content pre { padding: 16px; overflow-x: auto; }
.related-section { max-width: 860px; margin: 0 auto; padding: 32px 0 0; }
.section-title { font-size: 24px; font-weight: 700; margin: 0 0 24px; color: var(--text-main); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(220,231,239,.5);
  transition: all .25s ease;
  display: block;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.related-card-cover { aspect-ratio: 16/10; overflow: hidden; }
.related-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-card-cover img { transform: scale(1.04); }
.related-card-body { padding: 18px 20px 20px; }
.related-card-body h3 { margin: 0 0 8px; font-size: 16px; line-height: 1.5; color: var(--text-main); }
.related-card-body p {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-weak); }
.article-footer-nav { max-width: 860px; margin: 24px auto 0; text-align: center; }
.article-cta {
  max-width: 860px;
  margin: 48px auto 80px;
  background: linear-gradient(120deg, rgba(32,87,103,.94), rgba(46,110,135,.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-radius: 20px;
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  color: #fff;
}
.article-cta-info h3 { margin: 10px 0 8px; font-size: 22px; }
.article-cta-info p { margin: 0 0 16px; color: rgba(255,255,255,.85); font-size: 14px; }
.article-cta .tag { background: rgba(255,255,255,.16); color: #fff; }
.article-cta img { width: 200px; height: 130px; border-radius: 14px; object-fit: cover; box-shadow: 0 10px 24px rgba(0,0,0,.18); }
.article-not-found {
  text-align: center;
  padding: 70px 20px;
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  max-width: 760px;
  margin: 0 auto;
}
.not-found-mark {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--secondary-light);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
}
.article-not-found h1 { font-size: 30px; margin: 0 0 14px; color: var(--text-main); }
.article-not-found p { color: var(--text-sub); margin: 0 0 28px; }
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.82);
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo-text { color: #fff; font-size: 22px; }
.footer-brand .logo-text span { color: #70c7e0; }
.footer-brand .logo-icon { background: rgba(255,255,255,.14); color: #fff; }
.footer-brand p { margin: 16px 0 0; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.7); }
.footer-col h4 { color: #fff; font-size: 16px; margin: 0 0 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; font-size: 14px; }
.footer-col a { color: rgba(255,255,255,.7); transition: color .25s; }
.footer-col a:hover { color: var(--secondary-light); }
.footer-contact li { color: rgba(255,255,255,.7); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
#privacy { scroll-margin-top: 96px; }
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(27,52,73,.45);
  backdrop-filter: blur(2px);
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--surface);
  border-radius: 20px;
  width: 100%;
  max-width: 540px;
  padding: 36px 36px 32px;
  position: relative;
  box-shadow: 0 24px 48px rgba(27,52,73,.18);
  animation: modalIn .3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(.97); }
  to { opacity: 1; transform: none; }
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(220,231,239,.6);
  font-size: 22px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s;
}
.modal-close:hover { background: var(--border); color: var(--text-main); }
.modal-box h3 { font-size: 24px; margin: 0 0 6px; color: var(--text-main); }
.modal-sub { font-size: 14px; color: var(--text-sub); margin: 0 0 24px; }
.modal-form .form-group { margin-bottom: 16px; }
.modal-form label { display: block; font-size: 14px; font-weight: 600; color: var(--text-main); margin-bottom: 6px; }
.modal-form input,
.modal-form select {
  width: 100%;
  height: 44px;
  border: 1px solid #D0DCE4;
  border-radius: var(--radius-input);
  padding: 0 14px;
  color: var(--text-main);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.modal-form input:focus,
.modal-form select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,110,135,.2);
}
.form-row { display: grid; grid-template-columns: 1fr 120px; gap: 12px; }
.captcha-btn {
  height: 44px;
  border: 1px solid var(--primary);
  border-radius: var(--radius-input);
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: all .25s;
}
.captcha-btn:hover { background: #EAF1F6; }
.privacy-note { font-size: 12px; color: var(--text-weak); margin: 16px 0 0; text-align: center; }
.privacy-note a { color: var(--primary); }
.modal-success { display: none; text-align: center; padding: 20px 0; }
.modal-success.open { display: block; }
.success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--secondary-light);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.modal-success h4 { font-size: 20px; margin: 0 0 8px; color: var(--text-main); }
.modal-success p { color: var(--text-sub); font-size: 14px; margin: 0 0 24px; }
@media (max-width: 1080px) {
  .nav-links { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  header .nav-links { display: none; }
  .burger { display: flex; }
  .nav-actions .nav-search { display: none; }
  .page-banner { padding: 44px 0 34px; }
  .article-section { padding: 32px 0 48px; }
  .article-card { padding: 28px 20px; }
  .article-meta { gap: 8px; }
  .related-section { padding: 24px 0 0; }
  .related-grid { grid-template-columns: 1fr; }
  .article-cta { flex-direction: column; text-align: center; padding: 28px 22px; }
  .article-cta img { width: 100%; height: auto; max-height: 180px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
  .modal-box { padding: 28px 20px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .captcha-btn { max-width: 160px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .nav-cta { padding: 0 16px; font-size: 14px; }
  .logo-text { font-size: 18px; }
  .page-banner { margin-top: 64px; }
  .breadcrumb .current { max-width: 200px; }
  .article-card { padding: 24px 16px; }
  .related-card-cover { aspect-ratio: 16/9; }
}

/* roulang page: category2 */
:root {
  --primary: #2E6E87;
  --primary-dark: #205767;
  --secondary: #0E7C66;
  --secondary-light: #E4F2EE;
  --bg: #F4F8FB;
  --surface: #FFFFFF;
  --accent: #D9772B;
  --accent-light: #FDF1E5;
  --accent-dark: #BF6320;
  --text: #1B3449;
  --text-sub: #5A7186;
  --text-weak: #8CA0AE;
  --border: #DCE7EF;
  --link: #2E6E87;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-card: 0 2px 8px rgba(27,52,73,.06);
  --shadow-hover: 0 14px 28px rgba(27,52,73,.12);
  --shadow-header: 0 4px 16px rgba(27,52,73,.08);
  --shadow-modal: 0 24px 48px rgba(27,52,73,.18);
  --container-w: 1200px;
  --space: 96px;
  --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; height: auto; }
a { color: var(--link); text-decoration: none; transition: all .25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 15px; }
ul, ol { list-style: none; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-title { font-size: clamp(22px, 3vw, 30px); font-weight: 700; line-height: 1.4; color: var(--text); margin-bottom: 12px; }
.section-sub { font-size: 15px; color: var(--text-sub); line-height: 1.7; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 44px; padding: 0 24px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; letter-spacing: .02em; transition: all .25s ease; white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 6px rgba(46,110,135,.2); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: #EAF1F6; transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 2px 6px rgba(217,119,43,.28); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-accent:active { transform: translateY(0); }
.btn-block { width: 100%; height: 48px; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ===== Header / Nav ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,.55); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid rgba(220,231,239,.6); box-shadow: none; transition: background .3s ease, box-shadow .3s ease; }
.site-header.scrolled { background: rgba(255,255,255,.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); box-shadow: var(--shadow-header); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
.logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 17px; font-weight: 700; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: .01em; }
.logo-text span { color: var(--secondary); font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link { font-size: 15px; font-weight: 500; color: var(--text-sub); padding: 6px 2px; position: relative; transition: color .25s ease; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { content: ""; position: absolute; left: 50%; bottom: -2px; transform: translateX(-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-search { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; color: var(--text-sub); transition: all .25s ease; }
.nav-search:hover { background: #EAF1F6; color: var(--primary); }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 20px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; letter-spacing: .02em; transition: all .25s ease; }
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-card); }
.burger { display: none; flex-direction: column; justify-content: center; width: 44px; height: 44px; gap: 4px; align-items: center; border-radius: var(--radius-sm); }
.burger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s ease; }
.burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu { display: none; background: var(--surface); border-top: 1px solid var(--border); padding: 16px 24px 24px; }
.mobile-menu .nav-links { flex-direction: column; align-items: flex-start; gap: 4px; margin-bottom: 16px; }
.mobile-menu .nav-link { display: block; padding: 12px 0; font-size: 16px; width: 100%; border-bottom: 1px solid #EEF3F7; }
.mobile-menu .nav-cta { width: 100%; height: 46px; }

/* ===== Page Hero ===== */
.cat-hero { position: relative; min-height: calc(100vh - 72px); min-height: 520px; display: flex; align-items: center; background: linear-gradient(135deg, #F4F8FB 0%, #EAF1F6 100%); background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; padding: 120px 0 72px; overflow: hidden; }
.cat-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(244,248,251,.92) 0%, rgba(234,241,246,.78) 55%, rgba(234,241,246,.45) 100%); z-index: 1; }
.cat-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--text-sub); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-weak); user-select: none; }
.cat-hero-title { font-size: clamp(30px, 4vw, 44px); font-weight: 700; line-height: 1.35; color: var(--text); max-width: 680px; margin-bottom: 16px; }
.cat-hero-sub { font-size: 18px; line-height: 1.7; color: var(--text-sub); max-width: 620px; margin-bottom: 32px; }
.cat-hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-grid-overlay { position: absolute; inset: 0; background-image: linear-gradient(rgba(46,110,135,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(46,110,135,.04) 1px, transparent 1px); background-size: 44px 44px; pointer-events: none; z-index: 0; }

/* ===== Intro ===== */
.cat-intro { padding: var(--space) 0; }
.intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.intro-content .section-title { margin-bottom: 16px; }
.intro-content p { color: var(--text-sub); margin-bottom: 16px; font-size: 15px; }
.intro-list { margin-top: 24px; display: grid; gap: 14px; }
.intro-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--text); line-height: 1.6; }
.intro-list li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--secondary); margin-top: 10px; flex-shrink: 0; }
.intro-media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-md); box-shadow: var(--shadow-hover); }

/* ===== Membership Cards ===== */
.membership { background: var(--surface); padding: var(--space) 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); }
.membership-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.member-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 28px; box-shadow: var(--shadow-card); transition: all .25s ease; position: relative; overflow: hidden; }
.member-card.featured { background: var(--secondary-light); border-color: #C5E0D8; transform: translateY(-6px); }
.member-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.member-card.featured:hover { transform: translateY(-8px); }
.member-tag { display: inline-block; padding: 4px 14px; border-radius: 50px; background: var(--surface); color: var(--secondary); font-size: 12px; font-weight: 600; margin-bottom: 18px; letter-spacing: .03em; border: 1px solid #C5E0D8; }
.featured .member-tag { background: var(--secondary); color: #fff; border-color: var(--secondary); }
.member-title { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.member-desc { font-size: 14px; color: var(--text-sub); margin-bottom: 18px; line-height: 1.7; }
.member-list { display: grid; gap: 10px; }
.member-list li { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--text); line-height: 1.5; }
.member-list li::before { content: "✓"; color: var(--secondary); font-weight: 700; flex-shrink: 0; }

/* ===== Steps Flow (上下堆叠流程式) ===== */
.steps-flow { padding: var(--space) 0; }
.steps-list { max-width: 780px; margin: 0 auto; position: relative; display: grid; gap: 12px; }
.steps-list::before { content: ""; position: absolute; left: 38px; top: 24px; bottom: 24px; width: 2px; background: linear-gradient(to bottom, var(--secondary), var(--secondary-light)); border-radius: 2px; }
.step-item { display: grid; grid-template-columns: 76px 1fr; gap: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 32px; box-shadow: var(--shadow-card); transition: all .25s ease; }
.step-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.step-num { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.step-num span { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: var(--secondary); color: #fff; font-size: 18px; font-weight: 700; box-shadow: 0 0 0 6px var(--secondary-light); }
.step-num small { font-size: 12px; color: var(--text-weak); white-space: nowrap; }
.step-body .step-title { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.step-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== Materials ===== */
.materials { background: var(--surface); padding: var(--space) 0; border-top: 1px dashed var(--border); }
.materials-panel { max-width: 860px; margin: 0 auto; background: var(--bg); border-radius: var(--radius-lg); padding: 48px; border: 1px solid var(--border); }
.materials-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 40px; }
.materials-list li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--text); padding: 12px 0; border-bottom: 1px solid #E8EFF4; }
.materials-list li::before { content: "▸"; color: var(--accent); font-size: 18px; font-weight: 700; flex-shrink: 0; }
.materials-tip { margin-top: 32px; padding: 16px 20px; background: var(--accent-light); border-radius: var(--radius-md); font-size: 14px; color: var(--text-sub); border-left: 4px solid var(--accent); }

/* ===== FAQ ===== */
.faq { padding: var(--space) 0; }
.faq-wrap { max-width: 800px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: 0 28px; transition: all .25s ease; }
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-item.open { box-shadow: var(--shadow-hover); }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; line-height: 1.5; }
.faq-q .icon { position: relative; width: 20px; height: 20px; flex-shrink: 0; }
.faq-q .icon::before, .faq-q .icon::after { content: ""; position: absolute; background: var(--primary); border-radius: 2px; transition: transform .3s ease; }
.faq-q .icon::before { width: 16px; height: 2px; top: 9px; left: 2px; }
.faq-q .icon::after { width: 2px; height: 16px; top: 2px; left: 9px; }
.faq-item.open .faq-q .icon::after { transform: scaleY(0); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding-bottom: 22px; font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== CTA ===== */
.cat-cta { background: var(--primary-dark); background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; position: relative; padding: 80px 0; }
.cat-cta::before { content: ""; position: absolute; inset: 0; background: rgba(32,87,103,.85); }
.cat-cta .container { position: relative; z-index: 1; text-align: center; }
.cat-cta h2 { color: #fff; font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
.cat-cta p { color: rgba(255,255,255,.85); font-size: 16px; margin-bottom: 28px; }
.cat-cta .btn { min-width: 180px; }

/* ===== Footer ===== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.85); padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-brand .logo-text { color: #fff; font-size: 20px; }
.footer-brand .logo-text span { color: #9FD0C4; }
.footer-brand .logo-icon { background: var(--secondary); }
.footer-brand p { margin-top: 16px; color: rgba(255,255,255,.65); line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,.65); transition: color .25s ease; }
.footer-col a:hover { color: var(--secondary-light); }
.footer-contact li { color: rgba(255,255,255,.65); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 28px 0; font-size: 13px; color: rgba(255,255,255,.45); flex-wrap: wrap; }

/* ===== Modal ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(27,52,73,.45); backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); display: none; align-items: center; justify-content: center; z-index: 999; padding: 16px; }
.modal-overlay.open { display: flex; }
.modal-box { background: var(--surface); border-radius: var(--radius-xl); max-width: 540px; width: 100%; padding: 40px; box-shadow: var(--shadow-modal); position: relative; animation: modalIn .25s ease; }
@keyframes modalIn { from { opacity: 0; transform: scale(.96) translateY(12px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-close { position: absolute; top: 16px; right: 16px; width: 40px; height: 40px; border-radius: 50%; font-size: 20px; color: var(--text-sub); transition: all .25s ease; display: flex; align-items: center; justify-content: center; }
.modal-close:hover { background: #F0F4F8; color: var(--text); }
.modal-box h3 { font-size: 22px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.modal-box .modal-sub { font-size: 14px; color: var(--text-sub); margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group input, .form-group select { width: 100%; height: 44px; border: 1px solid #D0DCE4; border-radius: 10px; padding: 0 14px; font-size: 15px; color: var(--text); background: var(--surface); transition: all .25s ease; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(46,110,135,.2); }
.form-group input::placeholder { color: var(--text-weak); }
.select-wrap { position: relative; }
.select-wrap select { appearance: none; -webkit-appearance: none; padding-right: 36px; }
.select-wrap::after { content: "▾"; position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--text-sub); pointer-events: none; }
.privacy-note { text-align: center; font-size: 12px; color: var(--text-weak); margin-top: 18px; line-height: 1.7; }
.privacy-note a { color: var(--primary); }
.form-success { text-align: center; padding: 40px 20px; display: none; }
.form-success.show { display: block; }
.success-icon { width: 56px; height: 56px; border-radius: 50%; background: var(--secondary-light); color: var(--secondary); display: flex; align-items: center; justify-content: center; font-size: 28px; margin: 0 auto 16px; }
.form-success h4 { font-size: 20px; color: var(--text); margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--text-sub); margin-bottom: 24px; }
.form-error { display: none; background: #FDECEC; color: #C0392B; border-radius: 8px; font-size: 14px; padding: 10px 14px; margin-bottom: 16px; }
.form-error.show { display: block; }

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  .container { padding: 0 24px; }
  .nav-links { gap: 20px; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .membership-grid { grid-template-columns: 1fr 1fr; }
  .member-card.featured { transform: none; grid-column: span 2; }
  .member-card.featured:hover { transform: translateY(-4px); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .nav-links { display: none; }
  .nav-actions .nav-cta { display: none; }
  .burger { display: flex; }
  .mobile-menu.open { display: block; }
  .cat-hero { min-height: 480px; padding: 96px 0 56px; }
  .cat-hero-actions { flex-direction: column; width: 100%; }
  .cat-hero-actions .btn { width: 100%; }
  .intro-grid { gap: 24px; }
  .membership-grid { grid-template-columns: 1fr; }
  .member-card.featured { grid-column: span 1; }
  .steps-list { gap: 16px; }
  .steps-list::before { left: 27px; }
  .step-item { grid-template-columns: 56px 1fr; gap: 16px; padding: 20px; }
  .step-num span { width: 36px; height: 36px; font-size: 16px; }
  .materials-panel { padding: 28px 20px; }
  .materials-list { grid-template-columns: 1fr; gap: 6px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; align-items: center; }
  .faq-wrap { gap: 10px; }
  .faq-item { padding: 0 20px; }
  .modal-box { padding: 32px 24px; }
}
@media (max-width: 520px) {
  .logo-text { font-size: 18px; }
  .cat-hero-title { font-size: 30px; }
  .cat-hero-sub { font-size: 16px; }
  .section-title { font-size: 22px; }
  .member-card { padding: 24px 20px; }
}

/* roulang page: category3 */
:root {
  --primary: #2E6E87;
  --primary-dark: #205767;
  --secondary: #0E7C66;
  --secondary-light: #E4F2EE;
  --bg: #F4F8FB;
  --surface: #FFFFFF;
  --accent: #D9772B;
  --accent-light: #FDF1E5;
  --text: #1B3449;
  --text-secondary: #5A7186;
  --text-weak: #8CA0AE;
  --border: #DCE7EF;
  --radius-btn: 8px;
  --radius-card: 16px;
  --radius-input: 10px;
  --radius-modal: 20px;
  --radius-img: 12px;
  --shadow-card: 0 2px 8px rgba(27,52,73,.06);
  --shadow-hover: 0 14px 28px rgba(27,52,73,.12);
  --shadow-nav: 0 4px 16px rgba(27,52,73,.08);
  --shadow-modal: 0 24px 48px rgba(27,52,73,.18);
  --transition: all .25s ease;
  --container-max: 1200px;
  --space-section: 96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:100%;border:none;outline:none}
button{cursor:pointer;background:none}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}
section{scroll-margin-top:80px}
.section-pad{padding:var(--space-section) 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;
  letter-spacing:-.01em;color:var(--text);margin-bottom:12px;
}
.section-head p{color:var(--text-secondary);font-size:15px;line-height:1.7}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:var(--transition);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(32,87,103,.24)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#BF6320;color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(217,119,43,.28)}
.btn-accent:active{transform:translateY(0)}
.btn-outline{
  border:1px solid var(--primary);color:var(--primary);background:transparent;
}
.btn-outline:hover{background:#EAF1F6;color:var(--primary-dark)}
.btn:focus-visible,.nav-cta:focus-visible,.nav-search:focus-visible,.burger:focus-visible,.modal-close:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}
button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(220,231,239,.6);
  transition:var(--transition);
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-nav);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-size:18px;font-weight:700;
  box-shadow:0 4px 10px rgba(46,110,135,.25);
}
.logo-text{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.01em}
.logo-text span{color:var(--primary);font-size:14px;font-weight:700}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links .nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-secondary);
  padding:28px 0;letter-spacing:.01em;transition:var(--transition);
}
.nav-links .nav-link:hover{color:var(--primary)}
.nav-links .nav-link.active{color:var(--primary);font-weight:600}
.nav-links .nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search{
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);transition:var(--transition);background:rgba(255,255,255,.6);
}
.nav-search:hover{background:var(--secondary-light);color:var(--secondary)}
.nav-cta{
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;transition:var(--transition);
}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-1px)}
.burger{display:none;width:42px;height:42px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px}
.burger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  display:none;background:#fff;border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);padding:12px 24px 20px;
}
.mobile-menu .nav-links{flex-direction:column;align-items:flex-start;gap:0}
.mobile-menu .nav-link{display:block;padding:14px 0;font-size:16px;width:100%;border-bottom:1px solid #F0F5F8}
.mobile-menu .nav-link.active::after{display:none}
.mobile-menu .nav-cta{width:100%;margin-top:16px;height:44px}

/* Hero */
.page-hero{
  position:relative;min-height:420px;padding:140px 0 80px;
  display:flex;align-items:flex-end;
  background:linear-gradient(135deg,#EAF1F6 0%,#F4F8FB 50%,#E4F2EE 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.22;filter:grayscale(10%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:48px;
  background:var(--bg);
  clip-path:polygon(0 100%,100% 0,100% 100%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);
  margin-bottom:20px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-weak)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text-secondary)}
.page-hero h1{
  font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.35;color:var(--text);
  margin-bottom:14px;letter-spacing:-.01em;margin-bottom:16px;
}
.page-hero .hero-desc{
  font-size:17px;line-height:1.7;color:var(--text-secondary);
  max-width:640px;
}
.page-hero .hero-meta{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:20px;background:var(--surface);
  border:1px solid var(--border);font-size:13px;color:var(--text-secondary);
  box-shadow:0 2px 6px rgba(27,52,73,.04);
}

/* 分类介绍 / 左右分栏 */
.intro-section{padding:72px 0 56px}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.intro-text .lead{font-size:18px;line-height:1.8;color:var(--text);margin-bottom:20px;font-weight:500}
.intro-text p{color:var(--text-secondary);line-height:1.8;margin-bottom:14px}
.intro-points{margin-top:24px;display:grid;gap:14px}
.intro-point{display:flex;gap:12px;align-items:flex-start}
.intro-point .dot{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;
  background:var(--secondary-light);color:var(--secondary);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
  margin-top:4px;
}
.intro-point span{font-size:15px;color:var(--text-secondary);line-height:1.6}
.intro-img{position:relative}
.intro-img img{
  width:100%;border-radius:var(--radius-card);
  box-shadow:var(--shadow-hover);object-fit:cover;min-height:320px;
}
.intro-img::before{
  content:"";position:absolute;inset:20px -20px -20px 20px;
  border:2px dashed var(--primary);border-radius:var(--radius-card);
  opacity:.15;z-index:-1;
}

/* Masonry 卡片 */
.types-section{padding:56px 0 40px;background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.masonry-cards{
  columns:3;column-gap:24px;
}
.m-card{
  break-inside:avoid;margin-bottom:24px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:var(--transition);
}
.m-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.m-card .card-img{width:100%;height:auto;object-fit:cover;border-radius:0}
.m-card .card-img-wrap{overflow:hidden;position:relative}
.m-card .card-img-wrap img{transition:transform .4s ease;width:100%;min-height:140px;object-fit:cover}
.m-card:hover .card-img-wrap img{transform:scale(1.04)}
.m-card .card-body{padding:22px 24px 26px}
.m-card .tag{
  display:inline-block;padding:4px 12px;border-radius:16px;
  background:var(--secondary-light);color:var(--secondary);
  font-size:12px;font-weight:600;margin-bottom:10px;
}
.m-card .tag.orange{background:var(--accent-light);color:var(--accent)}
.m-card .tag.blue{background:#E8F0F4;color:var(--primary)}
.m-card h3{font-size:18px;font-weight:600;color:var(--text);margin-bottom:8px;line-height:1.4}
.m-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}
.m-card .card-footer{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-weak);
}
.m-card .arrow-link{color:var(--primary);font-weight:500;display:inline-flex;align-items:center;gap:4px;font-size:14px}
.m-card .arrow-link:hover{gap:8px;color:var(--primary-dark)}

/* 社群功能 */
.features-section{padding:var(--space-section) 0}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{
  background:var(--surface);border-radius:var(--radius-card);
  border:1px solid var(--border);box-shadow:var(--shadow-card);
  padding:30px 32px;display:flex;gap:20px;align-items:flex-start;
  transition:var(--transition);
}
.feature-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.feature-icon{
  width:52px;height:52px;border-radius:14px;flex-shrink:0;
  background:var(--secondary-light);color:var(--secondary);
  display:flex;align-items:center;justify-content:center;
}
.feature-card h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:6px}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* 流程 */
.process-section{
  padding:var(--space-section) 0;background:var(--secondary-light);
  position:relative;overflow:hidden;
}
.process-section::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.08;
}
.process-section .container{position:relative;z-index:2}
.process-section .section-head h2{color:var(--text)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{
  background:var(--surface);border-radius:var(--radius-card);
  padding:30px 24px;text-align:left;position:relative;
  box-shadow:var(--shadow-card);transition:var(--transition);
  border-top:3px solid var(--secondary);
}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.step-num{
  font-size:40px;font-weight:700;color:var(--secondary-light);
  line-height:1;margin-bottom:14px;letter-spacing:-.02em;
}
.step-card h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:8px}
.step-card p{font-size:13px;color:var(--text-secondary);line-height:1.7}

/* 场景 */
.scenario-section{padding:var(--space-section) 0}
.scenario-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.scenario-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:24px 26px;
  box-shadow:var(--shadow-card);transition:var(--transition);
}
.scenario-item:hover{box-shadow:var(--shadow-hover);transform:translateX(4px)}
.scenario-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  background:var(--accent-light);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
}
.scenario-item h3{font-size:15px;font-weight:600;color:var(--text);margin-bottom:4px}
.scenario-item p{font-size:13px;color:var(--text-secondary);line-height:1.6}

/* FAQ */
.faq-section{padding:var(--space-section) 0;background:var(--surface);border-top:1px solid var(--border)}
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  overflow:hidden;transition:var(--transition);
}
.faq-item:hover{box-shadow:0 8px 20px rgba(27,52,73,.1)}
.faq-item.active{border-color:var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 26px;font-size:16px;font-weight:600;color:var(--text);
  text-align:left;transition:var(--transition);
}
.faq-q:hover{color:var(--primary)}
.faq-q .plus{position:relative;width:20px;height:20px;flex-shrink:0;margin-left:16px}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:var(--transition)}
.faq-q .plus::before{width:16px;height:2px;top:9px;left:2px}
.faq-q .plus::after{width:2px;height:16px;top:2px;left:9px}
.faq-item.active .faq-q .plus::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 26px 22px;font-size:14px;color:var(--text-secondary);line-height:1.8;border-top:1px dashed var(--border);padding-top:16px}

/* CTA */
.cta-section{
  position:relative;padding:80px 0;overflow:hidden;
  background:var(--primary-dark);
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.15;
}
.cta-section::after{
  content:"";position:absolute;left:0;right:0;top:0;height:40px;
  background:var(--bg);clip-path:polygon(0 0,100% 0,100% 100%);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:clamp(24px,3.5vw,34px);font-weight:700;color:#fff;margin-bottom:14px;line-height:1.4}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.82);margin-bottom:28px;line-height:1.7}
.cta-inner .privacy-note{
  margin-top:18px;font-size:13px;color:rgba(255,255,255,.55);
}
.cta-inner .privacy-note a{color:rgba(255,255,255,.82);text-decoration:underline}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo-text{color:#fff;font-size:22px;display:flex;align-items:center;gap:10px}
.footer-brand .logo-text .logo-icon{background:rgba(255,255,255,.16);color:#fff;font-size:16px}
.footer-brand .logo-text span{color:var(--secondary-light)}
.footer-brand p{margin-top:16px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;font-size:14px}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;
  padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.65);font-size:14px;transition:var(--transition)}
.footer-col a:hover{color:var(--secondary-light);padding-left:4px}
.footer-contact li{padding-left:0;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
  flex-wrap:wrap;gap:8px;
}

/* 弹层 */
.modal-overlay{
  position:fixed;inset:0;z-index:2000;display:none;
  background:rgba(27,52,73,.45);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);
  align-items:center;justify-content:center;padding:20px;
}
.modal-overlay.open{display:flex;animation:fadeIn .25s ease}
.modal{
  background:var(--surface);border-radius:var(--radius-modal);max-width:540px;width:100%;
  box-shadow:var(--shadow-modal);padding:40px 40px 32px;position:relative;
  max-height:92vh;overflow-y:auto;
  animation:modalIn .3s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes modalIn{from{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-weak);background:#F4F8FB;transition:var(--transition);
}
.modal-close:hover{background:var(--accent-light);color:var(--accent);transform:rotate(90deg)}
.modal h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:6px}
.modal .modal-sub{font-size:14px;color:var(--text-secondary);margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:500;color:var(--text);margin-bottom:6px}
.form-group label .req{color:#D9534F;margin-left:2px}
.form-group input,.form-group select{
  width:100%;height:44px;border:1px solid #D0DCE4;border-radius:var(--radius-input);
  padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:var(--transition);
}
.form-group input:focus,.form-group select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,110,135,.18);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.modal-submit{
  width:100%;height:48px;background:var(--accent);color:#fff;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  margin-top:8px;transition:var(--transition);
}
.modal-submit:hover{background:#BF6320;transform:translateY(-1px)}
.form-privacy{font-size:12px;color:var(--text-weak);text-align:center;margin-top:14px;line-height:1.6}
.form-privacy a{color:var(--text-secondary);text-decoration:underline}
.alert-error{
  background:#FDECEC;color:#B34242;border-radius:8px;padding:10px 14px;
  font-size:13px;margin-bottom:16px;display:none;
}
.alert-error.show{display:block}
.form-success{text-align:center;padding:24px 0 8px;display:none}
.form-success .success-icon{
  width:72px;height:72px;border-radius:50%;margin:0 auto 18px;
  background:var(--secondary-light);color:var(--secondary);
  display:flex;align-items:center;justify-content:center;
}
.form-success h4{font-size:20px;font-weight:700;color:var(--text);margin-bottom:8px}
.form-success p{font-size:14px;color:var(--text-secondary);margin-bottom:20px}
.form-success .btn-close-success{
  background:var(--primary);color:#fff;padding:10px 28px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;
}

/* 响应式 */
@media (max-width:1024px){
  .nav-links{gap:20px;display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .mobile-menu.open{display:block}
  .masonry-cards{columns:2}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:36px}
}
@media (max-width:768px){
  :root{--space-section:56px}
  .container{padding:0 16px}
  .page-hero{padding:120px 0 56px;min-height:auto}
  .page-hero h1{font-size:30px;line-height:1.4}
  .page-hero .hero-desc{font-size:15px}
  .intro-grid{grid-template-columns:1fr;gap:36px}
  .intro-img img{min-height:220px}
  .masonry-cards{columns:1}
  .feature-grid{grid-template-columns:1fr;gap:16px}
  .scenario-wrap{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .section-head{margin-bottom:32px}
  .modal{padding:32px 24px 24px}
  .form-row{grid-template-columns:1fr}
}
@media (max-width:520px){
  .nav-inner{height:64px}
  .logo-text{font-size:18px}
  .feature-card{padding:22px 20px;flex-direction:column;gap:14px}
  .step-card{padding:24px 20px}
  .cta-inner h2{font-size:24px}
  .cta-section{padding:60px 0}
}