/* roulang page: index */
:root {
  --bg-deep: #070D1F;
  --bg-panel: rgba(255,255,255,0.05);
  --bg-panel-hover: rgba(255,255,255,0.08);
  --primary: #00D4C6;
  --primary-warm: #35E0F7;
  --accent: #F5B841;
  --text-main: #FFFFFF;
  --text-body: rgba(255,255,255,0.75);
  --text-sub: rgba(255,255,255,0.5);
  --border-soft: rgba(255,255,255,0.1);
  --border-bright: rgba(255,255,255,0.18);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-chip: 999px;
  --shadow-card: 0 8px 30px rgba(0,0,0,0.25);
  --shadow-hover: 0 16px 44px rgba(0,0,0,0.35);
  --glow-primary: 0 0 20px rgba(0,212,198,0.4);
  --glow-hover: 0 0 36px rgba(0,212,198,0.55);
  --transition: all 0.3s ease;
  --container-max: 1200px;
}

*,
*::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", system-ui, sans-serif;
  background: var(--bg-deep);
  color: var(--text-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 12% 8%, rgba(0,212,198,0.10), transparent 48%),
    radial-gradient(ellipse at 88% 90%, rgba(245,184,65,0.06), transparent 42%);
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

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

/* ===== 导航 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(7,13,31,0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

.brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

.nav-chips {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: var(--radius-chip);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  line-height: 1.4;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.chip:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-main);
  border-color: rgba(255,255,255,0.32);
}

.chip.active {
  background: linear-gradient(135deg, var(--primary), #0096D6);
  color: #06121A;
  border-color: transparent;
  box-shadow: var(--glow-primary);
  font-weight: 600;
}

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

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--text-main);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0096D6);
  color: #06121A;
  box-shadow: var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-hover);
  filter: brightness(1.08);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 10px rgba(0,212,198,0.3);
}

.btn-ghost {
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.85);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.42);
  transform: translateY(-2px);
}

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

.btn-primary:disabled,
.btn-ghost:disabled {
  opacity: 0.4;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.88rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 90px;
  background:
    linear-gradient(180deg, rgba(7,13,31,0.86), var(--bg-deep) 92%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
  width: 100%;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.02em;
  line-height: 1.16;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 480px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-stats {
  display: flex;
  gap: 16px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.stat-card {
  flex: 1;
  min-width: 128px;
  max-width: 190px;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-3px);
}

.stat-card .num {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.45);
  transform: rotate(1deg);
  transition: var(--transition);
}

.hero-visual-card:hover {
  transform: rotate(0deg) translateY(-4px);
  border-color: var(--border-bright);
}

.hero-visual-card img {
  border-radius: 14px;
  width: 100%;
  height: auto;
}

.float-chip {
  position: absolute;
  background: rgba(255,255,255,0.09);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  animation: floatY 4s ease-in-out infinite;
}

.float-chip.fc-1 {
  top: 6%;
  left: -2%;
}

.float-chip.fc-2 {
  bottom: 10%;
  right: -2%;
  animation-delay: 1.6s;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ===== 通用板块 ===== */
.section {
  padding: 80px 0;
  position: relative;
}

.section-head {
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}

.section-head p {
  color: var(--text-sub);
  margin-top: 12px;
  max-width: 640px;
}

.section-sub-dark {
  background: rgba(0,0,0,0.16);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* ===== 覆盖领域 ===== */
.coverage {
  padding: 64px 0;
}

.coverage-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.coverage-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-chip);
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
  color: rgba(255,255,255,0.8);
  font-size: 0.88rem;
  transition: var(--transition);
}

.coverage-chip:hover {
  border-color: rgba(0,212,198,0.4);
  color: var(--text-main);
  transform: translateY(-2px);
}

.coverage-chip svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

/* ===== 对比表 ===== */
.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-soft);
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 20px 22px;
  text-align: center;
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  vertical-align: middle;
}

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

.compare-table thead th {
  padding: 22px 22px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  background: rgba(255,255,255,0.03);
}

.compare-table tbody th {
  text-align: left;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  width: 28%;
}

.compare-table .col-hot {
  background: rgba(0,212,198,0.07);
  border-left: 1px solid rgba(0,212,198,0.22);
  border-right: 1px solid rgba(0,212,198,0.22);
  position: relative;
}

.compare-table .col-gold {
  background: rgba(245,184,65,0.045);
}

.compare-table thead .col-hot {
  background: rgba(0,212,198,0.1);
}

.compare-table .badge {
  display: inline-block;
  margin-left: 6px;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--accent);
  color: #1A1A1A;
  font-size: 0.72rem;
  font-weight: 700;
  box-shadow: 0 0 12px rgba(245,184,65,0.3);
  vertical-align: middle;
}

.icon-yes {
  color: var(--primary);
  width: 20px;
  height: 20px;
  display: inline-block;
  vertical-align: middle;
}

.icon-no {
  color: rgba(255,255,255,0.28);
  width: 20px;
  height: 20px;
  display: inline-block;
  vertical-align: middle;
}

/* ===== 等级亮点 ===== */
.highlights-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  grid-template-areas: "main top" "main bottom" "pro pro";
  gap: 24px;
}

.highlight-card {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 34px 30px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.highlight-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0,212,198,0.04), transparent 42%);
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
}

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

.highlight-card:hover::after {
  opacity: 1;
}

.highlight-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(0,212,198,0.1);
  color: var(--primary);
  margin-bottom: 18px;
  transition: var(--transition);
}

.highlight-card:hover .icon {
  box-shadow: 0 0 20px rgba(0,212,198,0.25);
}

.highlight-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.highlight-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
}

.highlight-card.is-pro {
  border-color: rgba(245,184,65,0.28);
}

.highlight-card.is-pro .icon {
  background: rgba(245,184,65,0.1);
  color: var(--accent);
}

.highlight-card.is-pro:hover .icon {
  box-shadow: 0 0 20px rgba(245,184,65,0.25);
}

.highlight-card.is-pro h3 {
  color: #FBD68A;
}

.card-main {
  grid-area: main;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-top {
  grid-area: top;
}

.card-bottom {
  grid-area: bottom;
}

.card-pro {
  grid-area: pro;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.card-pro .pro-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  padding: 4px 12px;
  border-radius: var(--radius-chip);
  border: 1px solid rgba(245,184,65,0.4);
  background: rgba(245,184,65,0.06);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ===== 最新动态 ===== */
.latest-section {
  background:
    linear-gradient(180deg, rgba(7,13,31,0.92), rgba(7,13,31,0.98)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}

.latest-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.latest-main {
  grid-column: 1;
}

.latest-side {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.feature-card,
.list-card {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  overflow: hidden;
}

.feature-card:hover,
.list-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-hover);
}

.feature-card a,
.list-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.feature-thumb {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

.feature-thumb img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.feature-card:hover .feature-thumb img {
  transform: scale(1.02);
}

.thumb-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 14px;
  background: rgba(0,212,198,0.9);
  color: #06121A;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-chip);
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}

.feature-body,
.list-info {
  padding: 26px 26px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.feature-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 12px;
}

.feature-body p,
.list-info p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.62);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 18px;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  gap: 12px;
  flex-wrap: wrap;
}

.meta-row time {
  font-size: 0.8rem;
  color: var(--text-sub);
  font-variant-numeric: tabular-nums;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-chip);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.75);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
}

.read-more svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s ease;
}

.feature-card:hover .read-more svg,
.list-card:hover .read-more svg {
  transform: translateX(4px);
}

.list-card a {
  flex-direction: row;
  gap: 18px;
  padding: 18px;
}

.list-card .list-thumb {
  width: 118px;
  min-width: 118px;
  height: 96px;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,0.05);
}

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

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

.list-info {
  padding: 0;
}

.list-info h3 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 8px;
}

.list-info p {
  font-size: 0.82rem;
  margin-bottom: 10px;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 24px;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px dashed rgba(255,255,255,0.16);
  border-radius: var(--radius-card);
}

.empty-state svg {
  width: 44px;
  height: 44px;
  color: var(--text-sub);
  margin: 0 auto 16px;
  display: block;
}

.empty-state p {
  color: var(--text-sub);
  font-size: 0.95rem;
}

.section-foot {
  margin-top: 40px;
  text-align: center;
}

/* ===== 会员声音 ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

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

.testimonial-card p {
  font-size: 0.93rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.75;
  margin-bottom: 18px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-author .avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,212,198,0.3), rgba(0,150,214,0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 700;
}

.testimonial-author .who {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 600;
}

.testimonial-author .role {
  font-size: 0.76rem;
  color: var(--text-sub);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.3s ease;
}

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

.faq-item:hover {
  background: rgba(255,255,255,0.025);
}

.faq-question {
  width: 100%;
  min-height: 52px;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  line-height: 1.5;
  transition: color 0.3s ease;
}

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

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

.faq-question .icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.65);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
  margin-left: 16px;
}

.faq-item.active .faq-question .icon {
  transform: rotate(45deg);
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,212,198,0.1);
}

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

.faq-item.active .faq-answer {
  max-height: 320px;
}

.faq-answer p {
  padding: 0 24px 20px;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ===== CTA 板块 ===== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,212,198,0.14), transparent 56%),
    linear-gradient(180deg, rgba(7,13,31,0.92), rgba(4,8,16,0.98)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 16px;
}

.cta-section .cta-sub {
  font-size: 1rem;
  color: var(--text-sub);
  max-width: 560px;
  margin: 0 auto 44px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto 44px;
  text-align: left;
}

.price-card {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

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

.price-card .plan-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.price-card .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}

.price-card .price small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-sub);
}

.price-card .plan-desc {
  font-size: 0.82rem;
  color: var(--text-sub);
  margin-bottom: 20px;
  line-height: 1.6;
}

.price-card ul {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.price-card li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.5;
}

.price-card li svg {
  width: 15px;
  height: 15px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.price-card.recommend {
  border-color: rgba(0,212,198,0.5);
  box-shadow: 0 0 24px rgba(0,212,198,0.16);
}

.price-card.recommend::before {
  content: "推荐";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: linear-gradient(135deg, var(--primary), #0096D6);
  color: #06121A;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-chip);
  box-shadow: 0 4px 14px rgba(0,212,198,0.3);
}

.price-card.pro-card {
  border-color: rgba(245,184,65,0.3);
}

.price-card.pro-card .plan-name {
  color: #FBD68A;
}

.price-card.pro-card li svg {
  color: var(--accent);
}

.cta-section .btn-lg {
  padding: 16px 48px;
  font-size: 1.05rem;
}

.security-note {
  margin-top: 22px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.42);
  letter-spacing: 0.02em;
}

/* ===== 页脚 ===== */
.footer {
  background: #04080F;
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 64px 0 26px;
}

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

.footer-brand {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.footer-brand span {
  color: var(--primary);
}

.footer-about {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.75;
  max-width: 320px;
  margin-bottom: 20px;
}

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

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.72rem;
  transition: var(--transition);
}

.social-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.86rem;
  color: var(--text-sub);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--text-main);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 22px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.38);
}

/* ===== 移动端 ===== */
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.04);
  color: var(--text-main);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-toggle:hover {
  border-color: var(--primary);
}

.mobile-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-drawer {
  display: none;
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero {
    padding: 96px 0 72px;
  }

  .hero-visual {
    max-width: 520px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
  }

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

  .latest-main {
    grid-column: 1;
  }

  .latest-side {
    grid-column: 1;
  }

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

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

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .nav-chips {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .mobile-drawer {
    display: block;
    position: fixed;
    top: 72px;
    right: 0;
    width: 300px;
    max-width: 88vw;
    height: calc(100vh - 72px);
    background: rgba(7,13,31,0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid rgba(255,255,255,0.1);
    padding: 28px 22px;
    transform: translateX(105%);
    transition: transform 0.35s ease;
    z-index: 99;
    box-shadow: -20px 0 60px rgba(0,0,0,0.4);
  }

  .mobile-drawer.open {
    transform: translateX(0);
  }

  .drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .drawer-nav .chip {
    justify-content: flex-start;
    padding: 14px 20px;
    font-size: 0.92rem;
  }

  .drawer-nav .btn {
    margin-top: 8px;
    width: 100%;
  }

  .hero-stats {
    gap: 12px;
  }

  .stat-card {
    min-width: 102px;
    padding: 16px 12px;
  }

  .stat-card .num {
    font-size: 1.3rem;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
    grid-template-areas: "main" "top" "bottom" "pro";
    gap: 18px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }

  .compare-table th,
  .compare-table td {
    padding: 15px 16px;
    font-size: 0.85rem;
  }

  .list-card a {
    flex-direction: column;
  }

  .list-card .list-thumb {
    width: 100%;
    height: 140px;
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 72px 0 56px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .hero-stats {
    flex-direction: column;
    align-items: stretch;
  }

  .stat-card {
    max-width: 100%;
  }

  .section-head h2 {
    font-size: 1.35rem;
  }

  .feature-body {
    padding: 20px 18px;
  }

  .feature-thumb img {
    height: 180px;
  }

  .price-card {
    padding: 26px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* roulang page: category1 */
:root {
  --bg: #070D1F;
  --bg-deep: #050A16;
  --primary: #00D4C6;
  --primary-2: #0096D6;
  --gold: #F5B841;
  --text: rgba(255, 255, 255, 0.92);
  --text-body: rgba(255, 255, 255, 0.75);
  --text-weak: rgba(255, 255, 255, 0.5);
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.18);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-chip: 999px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 44px rgba(0, 0, 0, 0.35);
  --glow-primary: 0 0 20px rgba(0, 212, 198, 0.4);
  --glow-primary-hover: 0 0 36px rgba(0, 212, 198, 0.55);
  --space-section: 80px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --font-en: Inter, "DIN Alternate", "Roboto", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(900px 500px at 10% -5%, rgba(0, 212, 198, 0.12), transparent 60%),
    radial-gradient(800px 420px at 95% 10%, rgba(245, 184, 65, 0.06), transparent 55%),
    radial-gradient(1000px 600px at 50% 120%, rgba(0, 150, 214, 0.08), transparent 60%);
  background-attachment: fixed;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.024'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(7, 13, 31, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 100%;
}
.logo {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: #fff;
}
.logo span {
  color: var(--primary);
}
.nav-chips {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 4px 0;
}
.nav-chips::-webkit-scrollbar {
  display: none;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: var(--radius-chip);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.28s ease;
  background: transparent;
  cursor: pointer;
}
.chip:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}
.chip.active {
  background: var(--primary);
  color: #071026;
  border-color: transparent;
  font-weight: 700;
  box-shadow: var(--glow-primary);
}
.header-cta {
  flex-shrink: 0;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #071026;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: var(--glow-primary);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-primary-hover);
  filter: brightness(1.08);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 12px rgba(0, 212, 198, 0.3);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  border-radius: var(--radius-btn);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  cursor: pointer;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}
.btn-ghost:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 3px;
}
.btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 40px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--gold), #D99A2B);
  color: #1A1305;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 0 20px rgba(245, 184, 65, 0.3);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(245, 184, 65, 0.45);
  filter: brightness(1.05);
}
.btn-gold:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
.btn-lg {
  padding: 16px 46px;
  font-size: 1.05rem;
}

/* ===== Hero Category ===== */
.hero-cat {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(7, 13, 31, 0.88), rgba(7, 13, 31, 0.96)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.hero-cat::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0, 212, 198, 0.18), transparent 65%);
  pointer-events: none;
}
.hero-cat-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}
.hero-breadcrumb {
  font-size: 0.85rem;
  color: var(--text-weak);
  margin-bottom: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.hero-breadcrumb a {
  color: var(--text-weak);
  transition: color 0.3s ease;
}
.hero-breadcrumb a:hover {
  color: var(--primary);
}
.hero-breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}
.hero-breadcrumb span.current {
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}
.hero-cat h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.25;
  margin-bottom: 14px;
}
.hero-cat h1 .accent {
  color: var(--primary);
}
.hero-cat-desc {
  font-size: 1rem;
  color: var(--text-body);
  max-width: 560px;
  line-height: 1.85;
}
.hero-cat-media {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.hero-cat-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}
.hero-cat-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 13, 31, 0.1), rgba(7, 13, 31, 0.55));
  pointer-events: none;
}
.hero-cat-badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 2;
  padding: 8px 18px;
  border-radius: var(--radius-chip);
  background: rgba(7, 13, 31, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ===== Section base ===== */
.section {
  padding: var(--space-section) 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 700;
  position: relative;
  padding-left: 16px;
  line-height: 1.4;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25em;
  bottom: 0.25em;
  width: 4px;
  border-radius: 4px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0, 212, 198, 0.5);
}
.section-head .sub {
  color: var(--text-weak);
  font-size: 0.92rem;
  max-width: 460px;
  line-height: 1.7;
}

/* ===== Article List ===== */
.cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cat-grid .feature-card {
  grid-column: span 2;
}
.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.32s ease, border-color 0.32s ease, box-shadow 0.32s ease;
}
.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.article-card .card-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 8;
}
.article-card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card:hover .card-cover img {
  transform: scale(1.03);
}
.article-card .card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 13, 31, 0.05), rgba(7, 13, 31, 0.5));
  pointer-events: none;
}
.article-card .card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--text-weak);
  margin-bottom: 10px;
  font-family: var(--font-en);
}
.card-meta .tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-chip);
  background: rgba(0, 212, 198, 0.1);
  border: 1px solid rgba(0, 212, 198, 0.25);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.article-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}
.article-card h3 a:hover {
  color: var(--primary);
}
.article-card .excerpt {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.feature-card .excerpt {
  -webkit-line-clamp: 2;
  font-size: 0.95rem;
}
.read-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 600;
  transition: gap 0.3s ease;
}
.read-more:hover {
  gap: 10px;
}
.read-more .arrow {
  transition: transform 0.3s ease;
}
.read-more:hover .arrow {
  transform: translateX(3px);
}

/* ===== Dimensions ===== */
.dims-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.dim-card {
  padding: 32px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.dim-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.dim-card.gold-accent {
  border-color: rgba(245, 184, 65, 0.35);
  background: linear-gradient(135deg, rgba(245, 184, 65, 0.08), rgba(255, 255, 255, 0.03));
}
.dim-card.gold-accent .dim-icon {
  color: var(--gold);
  border-color: rgba(245, 184, 65, 0.4);
}
.dim-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(0, 212, 198, 0.08);
  border: 1px solid rgba(0, 212, 198, 0.25);
  color: var(--primary);
  margin-bottom: 18px;
  transition: box-shadow 0.3s ease;
}
.dim-card:hover .dim-icon {
  box-shadow: 0 0 18px rgba(0, 212, 198, 0.25);
}
.dim-card h3 {
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.dim-card p {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.8;
}

/* ===== Stats ===== */
.stats-block {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.stat-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
}
.stat-num {
  font-family: var(--font-en);
  font-variant-numeric: tabular-nums;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
}
.stat-item.gold-stat .stat-num {
  color: var(--gold);
}
.stat-label {
  font-size: 0.88rem;
  color: var(--text-body);
  margin-top: 6px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.open {
  border-color: rgba(0, 212, 198, 0.35);
  box-shadow: 0 0 24px rgba(0, 212, 198, 0.08);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  padding: 16px 24px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: color 0.3s ease;
  min-height: 56px;
}
.faq-q:hover {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  color: var(--text-weak);
  transition: all 0.35s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  border-color: var(--primary);
  color: var(--primary);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 0 24px 22px;
  color: var(--text-body);
  font-size: 0.92rem;
  line-height: 1.85;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 0;
  padding-top: 18px;
}

/* ===== CTA ===== */
.cta-block {
  position: relative;
  padding: 90px 0;
  text-align: center;
  background: linear-gradient(180deg, #070D1F, #071826 50%, #070D1F);
  overflow: hidden;
}
.cta-block::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 680px;
  height: 380px;
  background: radial-gradient(circle, rgba(0, 212, 198, 0.16), transparent 65%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.4;
}
.cta-inner h2 span {
  color: var(--primary);
}
.cta-inner p {
  color: var(--text-body);
  font-size: 1rem;
  margin-bottom: 32px;
}
.cta-secure {
  font-size: 0.82rem;
  color: var(--text-weak);
  margin-top: 18px;
  letter-spacing: 0.02em;
}
.cta-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.cta-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  color: var(--text-body);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.02);
}
.cta-nav-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 212, 198, 0.06);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px;
  position: relative;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand {
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.footer-brand span {
  color: var(--primary);
}
.footer-about {
  font-size: 0.88rem;
  color: var(--text-weak);
  line-height: 1.8;
  max-width: 320px;
  margin-bottom: 20px;
}
.social-row {
  display: flex;
  gap: 12px;
}
.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  color: var(--text-weak);
  transition: all 0.3s ease;
}
.social-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 14px rgba(0, 212, 198, 0.2);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.9);
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 0.88rem;
  color: var(--text-weak);
  transition: color 0.3s ease;
}
.footer-col ul a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 26px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-weak);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --space-section: 64px;
  }
  .hero-cat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .header-inner {
    gap: 12px;
  }
  .header-cta .btn-primary {
    padding: 10px 18px;
    font-size: 0.85rem;
  }
  .nav-chips {
    gap: 8px;
  }
  .chip {
    padding: 7px 16px;
    font-size: 0.84rem;
  }
  .hero-cat {
    min-height: 480px;
    padding: 48px 0;
  }
  .hero-cat-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-cat-media img {
    height: 220px;
  }
  .cat-grid {
    grid-template-columns: 1fr;
  }
  .cat-grid .feature-card {
    grid-column: span 1;
  }
  .dims-grid {
    grid-template-columns: 1fr;
  }
  .stat-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .section {
    padding: 56px 0;
  }
  .cta-block {
    padding: 70px 0;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 1.15rem;
  }
  .header-cta .btn-primary {
    padding: 9px 14px;
    font-size: 0.82rem;
  }
  .chip {
    padding: 6px 14px;
    font-size: 0.8rem;
  }
  .hero-cat h1 {
    font-size: 1.9rem;
  }
  .article-card .card-body {
    padding: 18px 18px 20px;
  }
  .faq-q {
    padding: 14px 18px;
    font-size: 0.92rem;
  }
  .faq-a-inner {
    padding: 0 18px 18px;
  }
  .btn-gold {
    padding: 14px 32px;
  }
  .cta-nav {
    flex-direction: column;
    align-items: center;
  }
  .cta-nav .cta-nav-link {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: article */
:root {
  --bg: #070D1F;
  --bg-deep: #040812;
  --bg-soft: rgba(255, 255, 255, 0.04);
  --bg-card: rgba(255, 255, 255, 0.05);
  --primary: #00D4C6;
  --primary-2: #35E0F7;
  --amber: #F5B841;
  --text-1: rgba(255, 255, 255, 0.92);
  --text-2: rgba(255, 255, 255, 0.75);
  --text-3: rgba(255, 255, 255, 0.5);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.18);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-chip: 999px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 44px rgba(0, 0, 0, 0.35);
  --glow: 0 0 20px rgba(0, 212, 198, 0.4);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --font-num: Inter, "DIN Alternate", "Roboto", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  background-color: var(--bg);
  color: var(--text-2);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(680px 420px at 12% -5%, rgba(53, 224, 247, 0.08), transparent 62%),
    radial-gradient(720px 480px at 98% 18%, rgba(245, 184, 65, 0.04), transparent 55%),
    radial-gradient(900px 600px at 50% 110%, rgba(0, 212, 198, 0.05), transparent 70%);
}

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

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

button,
input {
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(7, 13, 31, 0.72);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #fff;
  white-space: nowrap;
}

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

.nav-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 28px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: var(--radius-chip);
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.chip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.18);
}

.chip.active {
  background: var(--primary);
  color: #062B2A;
  font-weight: 600;
  box-shadow: var(--glow);
}

.nav-cta {
  margin-left: auto;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #00D4C6, #0096D6);
  color: #062B2A;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 212, 198, 0.35);
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 0 36px rgba(0, 212, 198, 0.55);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(0, 212, 198, 0.35);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  transition: border-color 0.25s;
}

.menu-toggle:hover {
  border-color: var(--primary);
}

.article-hero {
  position: relative;
  padding: 72px 0 64px;
  background:
    linear-gradient(180deg, rgba(7, 13, 31, 0.86), #070D1F 94%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-3);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}

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

.breadcrumb .sep {
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--text-2);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-title {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  line-height: 1.4;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  max-width: 900px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
  color: var(--text-3);
  font-size: 0.85rem;
}

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

.meta-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.7;
}

.badge-category {
  display: inline-flex;
  align-items: center;
  background: rgba(0, 212, 198, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 212, 198, 0.2);
  padding: 4px 16px;
  border-radius: var(--radius-chip);
  font-size: 0.8rem;
  font-weight: 500;
}

.article-content-section {
  padding: 56px 0 80px;
}

.article-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 48px;
}

.toc-wrap {
  position: sticky;
  top: 104px;
  align-self: start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.toc-title {
  font-size: 0.85rem;
  color: var(--text-2);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.toc-list {
  list-style: none;
  padding: 0;
}

.toc-list li {
  margin-bottom: 6px;
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: border-color 0.2s;
}

.toc-list li:hover {
  border-left-color: var(--primary);
}

.toc-list a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.84rem;
  line-height: 1.6;
  transition: color 0.2s;
}

.toc-list a:hover {
  color: var(--primary);
}

.article-main {
  min-width: 0;
}

.article-body {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-2);
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
  color: #fff;
  font-weight: 700;
  line-height: 1.5;
}

.article-body h2 {
  font-size: 1.45rem;
  margin: 2em 0 0.8em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body h3 {
  font-size: 1.2rem;
  margin: 1.6em 0 0.6em;
}

.article-body h4 {
  font-size: 1.05rem;
  margin: 1.4em 0 0.5em;
}

.article-body p {
  margin: 1.2em 0;
}

.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(0, 212, 198, 0.3);
  transition: border-color 0.2s;
}

.article-body a:hover {
  border-bottom-color: var(--primary);
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 0 8px 8px 0;
  padding: 16px 22px;
  margin: 1.6em 0;
  color: var(--text-2);
}

.article-body img {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin: 1.6em auto;
  box-shadow: var(--shadow-card);
}

.article-body ul,
.article-body ol {
  margin: 1.2em 0;
  padding-left: 1.4em;
}

.article-body li {
  margin: 0.4em 0;
}

.article-body code {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.9em;
  color: var(--primary-2);
}

.article-body pre {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.6em 0;
}

.article-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-2);
}

.article-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.85);
  padding: 11px 22px;
  border-radius: var(--radius-btn);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.not-found-card {
  max-width: 620px;
  margin: 40px auto;
  text-align: center;
  padding: 72px 32px;
  border-radius: var(--radius-card);
  background: var(--bg-card);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.not-found-card h1 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.not-found-card p {
  color: var(--text-2);
  margin-bottom: 28px;
}

.related-section {
  padding: 64px 0 80px;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.related-section .section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.related-section .section-head::before {
  content: "";
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--primary);
}

.related-section h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 700;
  color: #fff;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.related-card {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 14px;
  overflow: hidden;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: all 0.25s ease;
}

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

.related-card .rc-img {
  width: 138px;
  height: 100px;
  flex-shrink: 0;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.related-card .rc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

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

.rc-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.rc-body h3 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rc-body p {
  color: var(--text-3);
  font-size: 0.82rem;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rc-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 10px;
  color: var(--text-3);
  font-size: 0.78rem;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
}

.rc-tag {
  display: inline-block;
  background: rgba(0, 212, 198, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 212, 198, 0.18);
  border-radius: var(--radius-chip);
  padding: 2px 12px;
  font-size: 0.75rem;
}

.footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.footer-brand span {
  color: var(--primary);
}

.footer-about {
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 14px 0 20px;
  max-width: 260px;
}

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

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  transition: all 0.25s ease;
}

.social-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(0, 212, 198, 0.08);
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

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

.footer-col a {
  color: var(--text-2);
  font-size: 0.88rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.82rem;
  font-family: var(--font-num);
}

@media (max-width: 1024px) {
  .article-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .toc-wrap {
    position: static;
    top: auto;
    order: -1;
  }

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

@media (max-width: 768px) {
  .container,
  .nav-inner,
  .article-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-chips {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    z-index: 99;
    background: rgba(7, 13, 31, 0.97);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%);
    transition: transform 0.32s ease;
    margin-left: 0;
  }

  .nav-chips.open {
    transform: translateY(0);
  }

  .nav-chips .chip {
    width: 100%;
    justify-content: center;
    padding: 13px 18px;
  }

  .nav-cta {
    margin-left: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .article-hero {
    padding: 52px 0 48px;
  }

  .article-title {
    font-size: 1.5rem;
  }

  .article-meta {
    gap: 12px;
  }

  .article-content-section {
    padding: 40px 0 64px;
  }

  .related-section {
    padding: 48px 0 64px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }

  .footer-about {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .logo {
    font-size: 1.1rem;
  }

  .btn-primary.nav-cta {
    padding: 10px 16px;
    font-size: 0.82rem;
  }

  .article-title {
    font-size: 1.32rem;
  }

  .breadcrumb .current {
    max-width: 160px;
  }

  .related-card {
    flex-direction: column;
  }

  .related-card .rc-img {
    width: 100%;
    height: 160px;
  }

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

/* roulang page: category2 */
:root{
    --bg:#070D1F;
    --bg-deep:#050A16;
    --bg-soft:#0A1428;
    --primary:#00D4C6;
    --primary-strong:#35E0F7;
    --primary-glow:rgba(0,212,198,.4);
    --primary-glow-lg:rgba(0,212,198,.55);
    --accent:#F5B841;
    --text:rgba(255,255,255,.75);
    --text-strong:#fff;
    --text-muted:rgba(255,255,255,.5);
    --card-bg:rgba(255,255,255,.05);
    --card-border:rgba(255,255,255,.1);
    --card-border-hover:rgba(255,255,255,.18);
    --glass-highlight:inset 0 1px 0 rgba(255,255,255,.08);
    --radius:16px;
    --radius-sm:12px;
    --radius-chip:999px;
    --shadow-card:0 8px 30px rgba(0,0,0,.25);
    --shadow-card-hover:0 16px 44px rgba(0,0,0,.35);
    --shadow-glow:0 0 20px var(--primary-glow);
    --shadow-glow-hover:0 0 36px var(--primary-glow-lg);
    --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    --font-num:Inter,"DIN Alternate","Roboto",sans-serif;
    --container-w:1200px;
    --spacer-lg:80px;
    --spacer-md:56px;
  }

  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-cn);
    line-height:1.8;
    font-size:1rem;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    position:relative;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background:
      radial-gradient(800px 500px at 10% -5%, rgba(0,212,198,.10), transparent 60%),
      radial-gradient(700px 500px at 100% 20%, rgba(245,184,65,.05), transparent 55%),
      radial-gradient(900px 700px at 50% 110%, rgba(53,224,247,.06), transparent 60%);
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    opacity:.025;
    background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)'/%3E%3C/svg%3E");
  }

  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button{font-family:inherit;cursor:pointer;border:none;background:none}
  input,textarea{font-family:inherit}

  .container{
    width:100%;
    max-width:var(--container-w);
    margin:0 auto;
    padding:0 24px;
    position:relative;
    z-index:1;
  }

  h1,h2,h3,h4{
    color:var(--text-strong);
    font-weight:700;
    line-height:1.3;
    letter-spacing:.01em;
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    background:linear-gradient(135deg,#00D4C6,#0096D6);
    color:#06231f;
    font-weight:700;
    font-size:.95rem;
    padding:14px 32px;
    border-radius:var(--radius-sm);
    box-shadow:var(--shadow-glow);
    transition:all .3s ease;
    border:none;
    cursor:pointer;
    white-space:nowrap;
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-glow-hover);
    filter:brightness(1.08);
  }
  .btn-primary:active{
    transform:translateY(1px) scale(.98);
  }
  .btn-primary:focus-visible{
    outline:3px solid rgba(0,212,198,.35);
    outline-offset:2px;
  }

  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    background:transparent;
    border:1px solid rgba(255,255,255,.25);
    color:rgba(255,255,255,.85);
    font-weight:600;
    font-size:.95rem;
    padding:14px 32px;
    border-radius:var(--radius-sm);
    transition:all .3s ease;
    cursor:pointer;
    white-space:nowrap;
  }
  .btn-ghost:hover{
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.4);
  }
  .btn-ghost:active{
    transform:scale(.98);
  }
  .btn-ghost:focus-visible{
    outline:3px solid rgba(255,255,255,.25);
    outline-offset:2px;
  }

  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--primary);
    font-weight:600;
    font-size:.9rem;
    transition:gap .3s ease;
  }
  .text-link:hover{
    gap:10px;
    color:var(--primary-strong);
  }

  .glass-card{
    background:var(--card-bg);
    border:1px solid var(--card-border);
    border-radius:var(--radius);
    box-shadow:var(--shadow-card);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
    position:relative;
  }
  .glass-card::before{
    content:"";
    position:absolute;
    top:0;
    left:12px;
    right:12px;
    height:1px;
    background:linear-gradient(90deg, transparent, rgba(255,255,255,.14), transparent);
    border-radius:var(--radius);
    pointer-events:none;
  }
  .glass-card:hover{
    transform:translateY(-4px);
    border-color:var(--card-border-hover);
    box-shadow:var(--shadow-card-hover);
  }

  .chip-tag{
    display:inline-flex;
    align-items:center;
    gap:4px;
    border-radius:var(--radius-chip);
    padding:4px 14px;
    font-size:.78rem;
    font-weight:500;
    color:rgba(255,255,255,.65);
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.16);
    white-space:nowrap;
  }

  .section-head{
    margin-bottom:36px;
  }
  .section-head h2{
    font-size:clamp(1.5rem,2.5vw,2.2rem);
    font-weight:700;
    position:relative;
    padding-left:16px;
  }
  .section-head h2::before{
    content:"";
    position:absolute;
    left:0;
    top:.3em;
    bottom:.3em;
    width:4px;
    border-radius:4px;
    background:linear-gradient(180deg,var(--primary),var(--primary-strong));
    box-shadow:0 0 12px var(--primary-glow);
  }
  .section-head p{
    margin-top:10px;
    padding-left:16px;
    color:var(--text-muted);
    font-size:.95rem;
    max-width:640px;
  }

  .site-header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(7,13,31,.72);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
    gap:24px;
  }
  .brand{
    font-size:1.3rem;
    font-weight:800;
    color:var(--text-strong);
    letter-spacing:.02em;
    display:flex;
    align-items:center;
    white-space:nowrap;
  }
  .brand span{
    color:var(--primary);
    font-weight:800;
  }
  .nav-chips{
    display:flex;
    align-items:center;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding:4px 0;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:var(--radius-chip);
    padding:9px 22px;
    font-size:.88rem;
    font-weight:600;
    color:rgba(255,255,255,.7);
    background:transparent;
    border:1px solid transparent;
    transition:all .3s ease;
    white-space:nowrap;
  }
  .chip:hover{
    color:var(--text-strong);
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.15);
  }
  .chip.active{
    background:linear-gradient(135deg,#00D4C6,#35E0F7);
    color:#06231f;
    font-weight:700;
    box-shadow:0 0 18px rgba(0,212,198,.45);
    border-color:transparent;
  }
  .nav-cta{
    padding:11px 24px;
    font-size:.88rem;
  }
  .nav-toggle{
    display:none;
    flex-direction:column;
    gap:5px;
    padding:8px;
    border-radius:8px;
  }
  .nav-toggle span{
    display:block;
    width:22px;
    height:2px;
    background:var(--text-strong);
    border-radius:2px;
    transition:transform .3s ease, opacity .3s ease;
  }
  .nav-toggle.open span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }
  .nav-toggle.open span:nth-child(2){
    opacity:0;
  }
  .nav-toggle.open span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }

  /* ===== Page Hero ===== */
  .page-hero{
    position:relative;
    padding:80px 0 40px;
    min-height:340px;
    display:flex;
    align-items:center;
    border-bottom:1px solid rgba(255,255,255,.06);
    background:
      linear-gradient(180deg, rgba(7,13,31,.72), var(--bg) 92%),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  }
  .page-hero-inner{
    display:grid;
    grid-template-columns:1.1fr .9fr;
    gap:48px;
    align-items:center;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:.85rem;
    color:var(--text-muted);
    margin-bottom:20px;
    flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--text-muted);transition:color .3s ease}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb span{color:rgba(255,255,255,.45)}
  .page-hero-content h1{
    font-size:clamp(2.4rem,4vw,3.2rem);
    font-weight:800;
    letter-spacing:.02em;
    margin-bottom:16px;
    background:linear-gradient(120deg,#fff, rgba(255,255,255,.82));
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
  }
  .page-hero-content p{
    color:var(--text);
    font-size:1.05rem;
    max-width:520px;
    margin-bottom:28px;
  }
  .hero-actions{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
  }
  .page-hero-visual{
    position:relative;
  }
  .hero-img-wrap{
    border-radius:18px;
    overflow:hidden;
    padding:10px;
    background:rgba(255,255,255,.05);
  }
  .hero-img-wrap img{
    width:100%;
    height:230px;
    object-fit:cover;
    border-radius:12px;
  }
  .hero-img-badge{
    position:absolute;
    left:18px;
    bottom:-14px;
    background:rgba(7,13,31,.85);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.16);
    border-radius:var(--radius-chip);
    padding:8px 16px;
    font-size:.8rem;
    color:var(--text);
    display:flex;
    align-items:center;
    gap:8px;
    box-shadow:var(--shadow-card);
  }
  .hero-img-badge .dot{
    width:7px;
    height:7px;
    border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 10px var(--primary);
    animation:pulse 1.6s ease infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:1;transform:scale(1)}
    50%{opacity:.55;transform:scale(.8)}
  }

  /* ===== Stats ===== */
  .stats-section{
    padding:56px 0 24px;
  }
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
  }
  .stat-card{
    padding:24px 24px;
    text-align:center;
  }
  .stat-num{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    font-size:2rem;
    font-weight:800;
    color:var(--text-strong);
    line-height:1.2;
    background:linear-gradient(135deg,var(--primary),var(--primary-strong));
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
  }
  .stat-label{
    font-size:.85rem;
    color:var(--text-muted);
    margin-top:6px;
  }

  /* ===== Focus Post Grid ===== */
  .focus-section{
    padding:56px 0;
  }
  .focus-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  .post-card{
    overflow:hidden;
    display:flex;
    flex-direction:column;
  }
  .post-card-lg{
    grid-column:span 2;
    display:grid;
    grid-template-columns:1fr 1.1fr;
    gap:0;
  }
  .post-card-lg .post-cover{
    height:100%;
  }
  .post-cover{
    overflow:hidden;
    position:relative;
    aspect-ratio:16/9;
  }
  .post-card-lg .post-cover{
    aspect-ratio:auto;
    min-height:280px;
  }
  .post-cover img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .45s ease;
  }
  .post-card:hover .post-cover img{
    transform:scale(1.03);
  }
  .post-cover::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,transparent 55%, rgba(5,10,22,.5));
  }
  .post-body{
    padding:24px;
    display:flex;
    flex-direction:column;
    gap:12px;
    flex:1;
  }
  .post-meta{
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
  }
  .post-meta time{
    font-size:.8rem;
    color:var(--text-muted);
    font-family:var(--font-num);
  }
  .post-body h3{
    font-size:1.15rem;
    font-weight:600;
    line-height:1.5;
    transition:color .3s ease;
  }
  .post-card:hover .post-body h3{
    color:var(--primary-strong);
  }
  .post-body .post-desc{
    color:var(--text-muted);
    font-size:.88rem;
    line-height:1.7;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    flex:1;
  }
  .post-body .text-link{
    margin-top:auto;
    align-self:flex-start;
  }

  /* ===== Features ===== */
  .features-section{
    padding:56px 0;
    background:rgba(255,255,255,.02);
    border-top:1px solid rgba(255,255,255,.05);
    border-bottom:1px solid rgba(255,255,255,.05);
  }
  .features-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .feature-card{
    padding:32px 28px;
    position:relative;
    overflow:hidden;
  }
  .feature-card .icon-wrap{
    width:52px;
    height:52px;
    border-radius:14px;
    background:linear-gradient(135deg,rgba(0,212,198,.16),rgba(0,212,198,.04));
    border:1px solid rgba(0,212,198,.25);
    display:flex;
    align-items:center;
    justify-content:center;
    margin-bottom:20px;
    font-size:1.4rem;
    color:var(--primary);
    transition:box-shadow .3s ease;
  }
  .feature-card:hover .icon-wrap{
    box-shadow:0 0 20px var(--primary-glow);
  }
  .feature-card h3{
    font-size:1.15rem;
    font-weight:600;
    margin-bottom:10px;
  }
  .feature-card p{
    color:var(--text);
    font-size:.92rem;
    line-height:1.75;
  }
  .feature-card .highlight{
    color:var(--accent);
  }

  /* ===== Scenarios ===== */
  .scenarios-section{
    padding:56px 0;
  }
  .scenarios-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .scenario-card{
    padding:28px 26px;
    display:flex;
    flex-direction:column;
  }
  .scenario-step{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    font-size:.9rem;
    font-weight:700;
    color:var(--primary);
    letter-spacing:.1em;
    margin-bottom:12px;
  }
  .scenario-card h3{
    font-size:1.08rem;
    margin-bottom:10px;
  }
  .scenario-card p{
    color:var(--text-muted);
    font-size:.9rem;
    line-height:1.75;
  }

  /* ===== Workflow ===== */
  .workflow-section{
    padding:56px 0;
    border-top:1px solid rgba(255,255,255,.05);
    border-bottom:1px solid rgba(255,255,255,.05);
  }
  .workflow-steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
    counter-reset:step;
  }
  .step-item{
    text-align:center;
    padding:28px 18px;
    position:relative;
  }
  .step-item::before{
    counter-increment:step;
    content:counter(step,decimal-leading-zero);
    display:block;
    font-family:var(--font-num);
    font-size:1.6rem;
    font-weight:800;
    color:transparent;
    -webkit-text-stroke:1px var(--primary);
    margin-bottom:10px;
    line-height:1;
  }
  .step-item h3{
    font-size:1rem;
    margin-bottom:8px;
    font-weight:600;
  }
  .step-item p{
    color:var(--text-muted);
    font-size:.85rem;
    line-height:1.6;
  }
  .step-item:not(:last-child)::after{
    content:"→";
    position:absolute;
    right:-18px;
    top:50%;
    transform:translateY(-50%);
    color:rgba(0,212,198,.6);
    font-size:1.2rem;
    font-weight:700;
  }

  /* ===== FAQ ===== */
  .faq-section{
    padding:56px 0;
  }
  .faq-wrap{
    max-width:820px;
    margin:0 auto;
  }
  .faq-item{
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .faq-item:first-child{
    border-top:1px solid rgba(255,255,255,.07);
  }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px 6px;
    text-align:left;
    font-size:1rem;
    font-weight:600;
    color:var(--text-strong);
    transition:color .3s ease;
    background:transparent;
    border:none;
    cursor:pointer;
    gap:16px;
  }
  .faq-q:hover{
    color:var(--primary-strong);
  }
  .faq-q:focus-visible{
    outline:3px solid rgba(0,212,198,.3);
    outline-offset:2px;
    border-radius:8px;
  }
  .faq-icon{
    position:relative;
    width:20px;
    height:20px;
    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:20px;
    height:2px;
    top:9px;
    left:0;
  }
  .faq-icon::after{
    width:2px;
    height:20px;
    left:9px;
    top:0;
  }
  .faq-item.open .faq-icon::after{
    transform:scaleY(0);
  }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .35s ease;
  }
  .faq-a-inner{
    padding:0 6px 20px;
    color:var(--text);
    font-size:.93rem;
    line-height:1.85;
  }

  /* ===== CTA ===== */
  .cta-section{
    padding:72px 0 56px;
  }
  .cta-panel{
    border-radius:24px;
    padding:64px 32px;
    text-align:center;
    position:relative;
    overflow:hidden;
    background:
      radial-gradient(600px 300px at 50% 0%, rgba(0,212,198,.16), transparent 70%),
      linear-gradient(180deg, rgba(10,20,40,.9), var(--bg-deep));
    border:1px solid rgba(255,255,255,.1);
  }
  .cta-panel h2{
    font-size:clamp(1.6rem,3vw,2.4rem);
    font-weight:800;
    margin-bottom:14px;
  }
  .cta-panel p{
    color:var(--text);
    max-width:560px;
    margin:0 auto 32px;
    font-size:1rem;
  }
  .cta-panel .btn-primary{
    font-size:1.05rem;
    padding:16px 44px;
  }
  .cta-safe{
    margin-top:18px;
    font-size:.8rem;
    color:var(--text-muted);
  }

  /* ===== Footer ===== */
  .footer{
    background:var(--bg-deep);
    border-top:1px solid rgba(255,255,255,.08);
    padding:64px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:40px;
    padding-bottom:40px;
  }
  .footer-brand{
    font-size:1.4rem;
    font-weight:800;
    color:var(--text-strong);
  }
  .footer-brand span{
    color:var(--primary);
  }
  .footer-about{
    color:var(--text-muted);
    font-size:.9rem;
    margin-top:12px;
    max-width:260px;
    line-height:1.7;
  }
  .social-row{
    display:flex;
    gap:10px;
    margin-top:18px;
  }
  .social-btn{
    width:38px;
    height:38px;
    border-radius:10px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.12);
    color:rgba(255,255,255,.7);
    font-size:.8rem;
    transition:all .3s ease;
  }
  .social-btn:hover{
    background:rgba(0,212,198,.12);
    border-color:rgba(0,212,198,.4);
    color:var(--primary);
  }
  .footer-col h4{
    font-size:.95rem;
    margin-bottom:16px;
    color:var(--text-strong);
  }
  .footer-col ul{
    list-style:none;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .footer-col a{
    color:var(--text-muted);
    font-size:.88rem;
    transition:color .3s ease;
  }
  .footer-col a:hover{
    color:var(--primary);
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.07);
    padding:18px 0;
    text-align:center;
    font-size:.82rem;
    color:rgba(255,255,255,.4);
  }

  /* ===== Responsive ===== */
  @media(max-width:1024px){
    .nav-cta{
      padding:10px 18px;
      font-size:.84rem;
    }
    .stats-grid{
      grid-template-columns:repeat(2,1fr);
    }
    .features-grid{
      grid-template-columns:repeat(2,1fr);
    }
    .scenarios-grid{
      grid-template-columns:repeat(2,1fr);
    }
    .workflow-steps{
      grid-template-columns:repeat(2,1fr);
    }
    .step-item:not(:last-child)::after{
      display:none;
    }
    .footer-grid{
      grid-template-columns:1fr 1fr;
      gap:32px;
    }
  }

  @media(max-width:768px){
    .nav-wrap{
      height:64px;
    }
    .nav-chips{
      position:fixed;
      top:64px;
      left:0;
      right:0;
      background:rgba(7,13,31,.96);
      -webkit-backdrop-filter:blur(20px);
      backdrop-filter:blur(20px);
      flex-direction:column;
      align-items:stretch;
      padding:16px 20px 24px;
      gap:6px;
      border-bottom:1px solid rgba(255,255,255,.08);
      transform:translateY(-8px);
      opacity:0;
      visibility:hidden;
      transition:all .3s ease;
      box-shadow:0 20px 50px rgba(0,0,0,.45);
    }
    .nav-chips.open{
      transform:translateY(0);
      opacity:1;
      visibility:visible;
    }
    .nav-chips .chip{
      justify-content:flex-start;
      padding:13px 20px;
    }
    .nav-toggle{
      display:flex;
    }
    .nav-cta{
      margin-left:auto;
    }
    .page-hero{
      padding:56px 0 32px;
    }
    .page-hero-inner{
      grid-template-columns:1fr;
      gap:28px;
    }
    .hero-img-wrap img{
      height:190px;
    }
    .focus-grid{
      grid-template-columns:1fr;
    }
    .post-card-lg{
      grid-column:span 1;
      grid-template-columns:1fr;
    }
    .post-card-lg .post-cover{
      aspect-ratio:16/9;
      min-height:auto;
    }
    .post-card-lg .post-cover img{
      height:100%;
    }
    .features-grid,.scenarios-grid,.workflow-steps{
      grid-template-columns:1fr;
    }
    .footer-grid{
      grid-template-columns:1fr;
      gap:28px;
    }
    .cta-panel{
      padding:48px 20px;
    }
  }

  @media(max-width:520px){
    .container{
      padding:0 16px;
    }
    .brand{
      font-size:1.1rem;
    }
    .hero-actions{
      flex-direction:column;
      align-items:stretch;
    }
    .hero-actions .btn-primary,.hero-actions .btn-ghost{
      width:100%;
    }
    .stats-grid{
      grid-template-columns:1fr;
    }
    .section-head h2{
      font-size:1.35rem;
    }
    .post-body{
      padding:20px 16px;
    }
    .post-body h3{
      font-size:1rem;
    }
    .feature-card{
      padding:24px 20px;
    }
  }