/* roulang page: index */
:root {
  --primary: #3B7EAF;
  --primary-light: #4A8FC4;
  --primary-dark: #2F6D9B;
  --gradient-primary: linear-gradient(135deg, #2F6D9B 0%, #4E9AD2 100%);
  --gradient-gold: linear-gradient(90deg, transparent, #C9A876, transparent);
  --dark-text: #1F3A52;
  --body-text: #33475B;
  --muted-text: #6A7B8C;
  --bg-white: #FFFFFF;
  --bg-light: #F4F8FC;
  --bg-blue: #EAF2FA;
  --border-color: #D7E3F0;
  --gold: #C9A876;
  --gold-dark: #A67C52;
  --success: #2D7D5B;
  --warning: #B4772C;
  --danger: #B33A3A;
  --shadow-sm: 0 4px 16px rgba(42, 83, 125, 0.08);
  --shadow-md: 0 12px 28px rgba(42, 83, 125, 0.14);
  --shadow-lg: 0 20px 40px rgba(42, 83, 125, 0.10);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-badge: 999px;
  --radius-sm: 8px;
  --container-w: 1200px;
  --space-section: 96px;
  --space-section-tablet: 72px;
  --space-section-mobile: 56px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

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

input,
textarea {
  font-family: inherit;
}

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

/* ===== 顶部信息条 ===== */
.topbar {
  background: #14293E;
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  height: 38px;
  line-height: 38px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.topbar-left {
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.3px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-right a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}

.topbar-right a:hover {
  color: var(--gold);
}

.topbar-divider {
  color: rgba(255, 255, 255, 0.3);
}

.topbar-join {
  background: rgba(201, 168, 118, 0.2);
  padding: 2px 12px;
  border-radius: 999px;
  color: #E0C49A !important;
  border: 1px solid rgba(201, 168, 118, 0.4);
  font-size: 12px;
  transition: background 0.3s ease;
}

.topbar-join:hover {
  background: rgba(201, 168, 118, 0.35);
}

@media (max-width: 575px) {
  .topbar-right {
    gap: 6px;
  }
  .topbar-right a:not(.topbar-join) {
    display: inline;
  }
  .topbar-divider {
    display: none;
  }
  .topbar-join {
    display: none;
  }
}

/* ===== 主导航 ===== */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(42, 83, 125, 0.05);
  border-bottom: 1px solid rgba(215, 227, 240, 0.5);
  transition: box-shadow 0.35s ease;
}

.main-nav.nav-scrolled {
  box-shadow: 0 4px 20px rgba(42, 83, 125, 0.12);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

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

.logo-icon {
  font-size: 28px;
  color: var(--gold-dark);
  line-height: 1;
  text-shadow: 0 0 12px rgba(166, 124, 82, 0.3);
}

.logo-texts {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark-text);
  letter-spacing: 0.5px;
}

.logo-sub {
  font-size: 12px;
  color: var(--muted-text);
  letter-spacing: 1.5px;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--body-text);
  padding: 8px 2px;
  position: relative;
  white-space: nowrap;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gold-gradient);
  border-radius: 2px;
  transition: width 0.35s ease;
}

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

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

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

.nav-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #E04A4A;
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: middle;
  position: relative;
  top: -1px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, box-shadow 0.4s ease;
    box-shadow: none;
    border-bottom: 1px solid transparent;
  }
  .nav-menu.open {
    max-height: 480px;
    box-shadow: 0 16px 32px rgba(42, 83, 125, 0.12);
    border-bottom-color: var(--border-color);
  }
  .nav-menu a {
    display: block;
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid rgba(215, 227, 240, 0.4);
    font-size: 15px;
  }
  .nav-menu a:last-child {
    border-bottom: none;
  }
  .nav-menu a::after {
    display: none;
  }
  .nav-menu a:hover,
  .nav-menu a.active {
    background: linear-gradient(90deg, rgba(59, 126, 175, 0.06), transparent);
    padding-left: 8px;
  }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 88px 0 72px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.93) 0%, rgba(244, 248, 252, 0.90) 55%, rgba(234, 242, 250, 0.86) 100%),
    url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
  border-bottom: 2px solid var(--gold-gradient);
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(201, 168, 118, 0.14) 0%, rgba(201, 168, 118, 0) 70%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 126, 175, 0.08);
  border: 1px solid rgba(59, 126, 175, 0.2);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 20px;
}

.hero-badge::before {
  content: '◈';
  color: var(--gold-dark);
  font-size: 14px;
}

.hero h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--dark-text);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

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

.hero-sub {
  font-size: 16px;
  color: var(--body-text);
  line-height: 1.75;
  margin-bottom: 30px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-btn);
  transition: all 0.3s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(47, 109, 155, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(47, 109, 155, 0.32);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(47, 109, 155, 0.2);
}

.btn-outline {
  background: var(--bg-white);
  border-color: var(--border-color);
  color: var(--primary-dark);
}

.btn-outline:hover {
  background: var(--bg-light);
  border-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(42, 83, 125, 0.08);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.4);
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--dark-text);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(59, 126, 175, 0.3);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: var(--muted-text);
}

.hero-meta span {
  position: relative;
}

.hero-meta span::before {
  content: '✦';
  color: var(--gold-dark);
  margin-right: 6px;
  font-size: 12px;
}

.hero-visual {
  position: relative;
}

.hero-img {
  width: 100%;
  border-radius: 20px;
  object-fit: cover;
  min-height: 320px;
  max-height: 440px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-light);
}

.hero-float-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(201, 168, 118, 0.5);
  color: var(--gold-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(42, 83, 125, 0.1);
}

.hero-float-badge::before {
  content: '❝';
  margin-right: 5px;
  font-size: 16px;
}

@media (max-width: 767px) {
  .hero {
    padding: 52px 0 56px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero h1 {
    font-size: 28px;
    line-height: 1.35;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-visual {
    order: -1;
  }
  .hero-img {
    min-height: 200px;
    max-height: 260px;
  }
}

@media (max-width: 991px) and (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero h1 {
    font-size: 32px;
  }
  .hero-visual {
    max-width: 560px;
  }
}

/* ===== 通用 section ===== */
section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--dark-text);
  line-height: 1.4;
  margin-bottom: 12px;
}

.section-head h2 em {
  font-style: normal;
  color: var(--primary);
}

.section-desc {
  font-size: 15px;
  color: var(--muted-text);
  line-height: 1.7;
}

.section-line {
  width: 48px;
  height: 2px;
  background: var(--gradient-gold);
  margin: 14px auto 0;
  border-radius: 2px;
}

@media (max-width: 767px) {
  section {
    padding-top: var(--space-section-mobile);
    padding-bottom: var(--space-section-mobile);
  }
  .section-head {
    margin-bottom: 32px;
  }
  .section-head h2 {
    font-size: 22px;
  }
}

/* ===== 痛点区 ===== */
.pain {
  background: var(--bg-white);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.pain-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.pain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-gold);
  opacity: 0;
  transition: opacity 0.35s ease;
}

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

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

.pain-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}

.pain-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
}

.pain-card p {
  font-size: 14px;
  color: var(--muted-text);
  line-height: 1.7;
}

@media (max-width: 767px) {
  .pain-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* ===== 解决方案区 ===== */
.solution {
  background: var(--bg-light);
  border-top: 1px solid rgba(215, 227, 240, 0.6);
  border-bottom: 1px solid rgba(215, 227, 240, 0.6);
}

.solution-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 36px;
  align-items: start;
}

.solution-cols {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.solution-cols-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.col-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 12px;
  border-radius: 10px;
  transition: all 0.3s ease;
  margin-bottom: 4px;
}

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

.col-item:hover {
  background: var(--bg-light);
}

.col-item .col-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.col-item .col-name::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.col-item:nth-child(2) .col-name::before { background: var(--gold-dark); }
.col-item:nth-child(3) .col-name::before { background: #6B7FAF; }
.col-item:nth-child(4) .col-name::before { background: var(--success); }
.col-item:nth-child(5) .col-name::before { background: var(--warning); }
.col-item:nth-child(6) .col-name::before { background: var(--gold); }

.col-count {
  font-size: 12px;
  color: var(--muted-text);
  background: var(--bg-light);
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.col-arrow {
  margin-left: 8px;
  font-size: 14px;
  color: var(--primary);
  opacity: 0;
  transform: translateX(-6px);
  transition: all 0.3s ease;
}

.col-item:hover .col-arrow {
  opacity: 1;
  transform: translateX(0);
}

.col-item:hover .col-count {
  background: rgba(59, 126, 175, 0.1);
  color: var(--primary-dark);
}

.solution-posts {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  position: relative;
}

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

.post-large {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 20px;
  align-items: center;
  border-left: 3px solid var(--gold-dark);
}

.post-large .post-cover {
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 10px;
  background: var(--bg-light);
}

.post-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(201, 168, 118, 0.15), rgba(201, 168, 118, 0.05));
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
  border: 1px solid rgba(201, 168, 118, 0.3);
}

.post-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.post-excerpt {
  font-size: 13px;
  color: var(--muted-text);
  line-height: 1.6;
  margin-bottom: 12px;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--muted-text);
}

.post-author {
  font-weight: 600;
  color: var(--primary);
}

.post-small {
  display: grid;
  grid-template-columns: 1fr 90px;
  gap: 14px;
  align-items: center;
}

.post-small .post-cover {
  width: 100%;
  height: 72px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--bg-light);
}

.post-small h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.post-small .post-excerpt {
  margin-bottom: 6px;
  font-size: 12px;
}

@media (max-width: 991px) {
  .solution-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .post-large {
    grid-template-columns: 1fr;
  }
  .post-large .post-cover {
    height: 160px;
  }
  .post-small {
    grid-template-columns: 1fr 72px;
  }
}

/* ===== 数据区 ===== */
.stats {
  background: var(--bg-white);
}

.stats-band {
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-blue) 100%);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}

.stats-band::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-gold);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  position: relative;
  padding: 12px 8px;
}

.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 25%;
  height: 50%;
  width: 1px;
  background: var(--border-color);
}

.stat-num {
  display: block;
  font-size: 42px;
  font-weight: 800;
  color: var(--gold-dark);
  line-height: 1.2;
  letter-spacing: -1px;
  text-shadow: 0 2px 8px rgba(166, 124, 82, 0.15);
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--muted-text);
  margin-top: 8px;
}

.stat-note {
  display: block;
  font-size: 12px;
  color: rgba(107, 123, 140, 0.7);
  margin-top: 4px;
}

@media (max-width: 767px) {
  .stats-band {
    padding: 36px 20px;
    border-radius: 16px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 12px;
  }
  .stat-item + .stat-item::before {
    display: none;
  }
  .stat-num {
    font-size: 32px;
  }
}

/* ===== 证言区 ===== */
.testimonials {
  background: var(--bg-light);
  border-top: 1px solid rgba(215, 227, 240, 0.6);
  border-bottom: 1px solid rgba(215, 227, 240, 0.6);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
  max-width: 1040px;
  margin: 0 auto;
}

.testimonial-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  border-left: 3px solid var(--gold);
  position: relative;
}

.testimonial-card:nth-child(1) {
  transform: rotate(-0.6deg);
}

.testimonial-card:nth-child(2) {
  transform: translateY(18px) rotate(0.4deg);
}

.testimonial-card:nth-child(3) {
  transform: rotate(0.7deg);
}

.testimonial-card:hover {
  transform: translateY(-4px) rotate(0deg);
  box-shadow: var(--shadow-hover);
}

.stars {
  color: #E6A23C;
  font-size: 16px;
  letter-spacing: 3px;
  margin-bottom: 14px;
}

.quote {
  font-size: 14px;
  color: var(--body-text);
  line-height: 1.75;
  margin-bottom: 18px;
  position: relative;
  padding-left: 4px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark-text);
}

.author-tag {
  font-size: 12px;
  color: var(--muted-text);
  background: var(--bg-light);
  padding: 3px 10px;
  border-radius: 999px;
}

@media (max-width: 767px) {
  .testimonial-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .testimonial-card:nth-child(1),
  .testimonial-card:nth-child(2),
  .testimonial-card:nth-child(3) {
    transform: none;
  }
}

/* ===== FAQ 区 ===== */
.faq {
  background: var(--bg-white);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 36px;
  max-width: 1080px;
  margin: 0 auto;
}

.faq-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: var(--primary-light);
  box-shadow: 0 8px 20px rgba(59, 126, 175, 0.08);
}

.faq-item summary {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item .faq-answer > div {
  padding-top: 14px;
}

.faq-item .faq-answer p {
  font-size: 14px;
  color: var(--muted-text);
  line-height: 1.7;
}

@media (max-width: 767px) {
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* ===== CTA 区 ===== */
.cta {
  background: linear-gradient(135deg, #F4F8FC 0%, #EAF2FA 100%);
  position: relative;
  padding-top: 64px;
  padding-bottom: 64px;
  border-top: 1px solid rgba(215, 227, 240, 0.8);
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-gold);
}

.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 14px;
  line-height: 1.4;
}

.cta-inner p {
  font-size: 15px;
  color: var(--body-text);
  margin-bottom: 26px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.cta-note {
  font-size: 12px;
  color: var(--muted-text);
}

.cta-note a {
  color: var(--primary);
  border-bottom: 1px solid rgba(59, 126, 175, 0.3);
}

@media (max-width: 767px) {
  .cta {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .cta-inner h2 {
    font-size: 22px;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* ===== 页脚 ===== */
.footer {
  background: #14293E;
  color: rgba(255, 255, 255, 0.75);
  padding: 72px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.9fr 1fr;
  gap: 36px;
  padding-bottom: 48px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: block;
  margin-bottom: 14px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  font-size: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

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

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  padding: 6px 0;
  transition: all 0.3s ease;
}

.footer-col a:hover {
  color: var(--gold);
  padding-left: 6px;
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.6);
  padding: 4px 0;
  font-size: 14px;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.65);
}

.footer-contact a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

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

@media (max-width: 991px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer {
    padding-top: 48px;
  }
}

/* ===== 通用工具 ===== */
.text-center {
  text-align: center;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mb-16 {
  margin-bottom: 16px;
}