/* roulang page: index */
:root {
  --paper: #F6F1EA;
  --surface: #FFFFFF;
  --sink: #EDE5DA;
  --line: #E3D9CC;
  --ink: #1B1713;
  --muted: #6D6257;
  --brand: #E0442D;
  --brand-deep: #B83224;
  --gold: #C1925C;
  --night: #14110D;
  --shadow-card: 0 6px 20px rgba(27, 23, 19, 0.05);
  --shadow-lift: 0 14px 30px rgba(27, 23, 19, 0.12);
  --radius-lg: 16px;
  --radius-md: 12px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, p, ul {
  margin-top: 0;
}

button, input {
  font-family: inherit;
  font-size: 100%;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 6px;
}

.site-container {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding: 64px 0;
}

.section--tight {
  padding: 40px 0;
}

.section--dark {
  background: var(--night);
  color: #f4eee6;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 4px;
  border-radius: 99px;
  background: var(--brand);
}

.heading-xl {
  font-size: clamp(2.1rem, 5.5vw, 3.7rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.55em;
}

.heading-2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.3;
  font-weight: 750;
  letter-spacing: -0.01em;
  margin-bottom: 0.6em;
}

.heading-3 {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 700;
  line-height: 1.4;
}

.lead-text {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.9;
}

/* 固定悬浮导航 */
.site-header {
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  z-index: 60;
  padding: 0 16px;
  pointer-events: none;
}

.header-inner {
  pointer-events: auto;
  max-width: 930px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: rgba(20, 17, 13, 0.84);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 8px 10px 8px 14px;
  box-shadow: 0 12px 30px rgba(20, 17, 13, 0.22);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  white-space: nowrap;
}

.nav-brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  line-height: 1;
  box-shadow: 0 0 0 4px rgba(224, 68, 45, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: block;
  padding: 7px 13px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
  color: #ffffff;
  background: rgba(224, 68, 45, 0.24);
}

.nav-link.active::after {
  content: "";
  display: block;
  width: 8px;
  height: 4px;
  margin: 4px auto 0;
  border-radius: 99px;
  background: var(--brand);
}

.nav-cta {
  display: inline-block;
  background: var(--brand);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 999px;
  padding: 9px 18px;
  margin-left: 4px;
  line-height: 1.2;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 5px 16px rgba(224, 68, 45, 0.28);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--brand-deep);
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(224, 68, 45, 0.36);
}

.nav-burger {
  display: none;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
}

.nav-burger span {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 99px;
  background: #ffffff;
}

.nav-check {
  display: none;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  padding: 13px 24px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 0;
}

.btn:active {
  transform: translateY(1px) scale(0.98);
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
  box-shadow: 0 8px 22px rgba(224, 68, 45, 0.25);
}

.btn-primary:hover {
  background: var(--brand-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(224, 68, 45, 0.3);
}

.btn-ghost-light {
  background: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.65);
}

.btn-ghost-light:hover {
  background: rgba(224, 68, 45, 0.15);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-ghost-dark {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.btn-ghost-dark:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(224, 68, 45, 0.04);
}

/* Hero */
.hero {
  position: relative;
  min-height: 84vh;
  display: flex;
  align-items: flex-end;
  background-color: var(--night);
  background-image:
    linear-gradient(74deg, rgba(20, 17, 13, 0.96) 0%, rgba(20, 17, 13, 0.78) 44%, rgba(20, 17, 13, 0.2) 86%),
    url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
  padding-top: 160px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -100px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(224, 68, 45, 0.22) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 780px;
  padding-bottom: 70px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 19px;
  color: rgba(255, 255, 255, 0.86);
  max-width: 620px;
  margin-bottom: 2rem;
  line-height: 1.9;
}

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

.scroll-hint {
  position: absolute;
  right: 40px;
  bottom: 46px;
  width: 26px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 99px;
  z-index: 2;
}

.scroll-hint::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 10px;
  width: 4px;
  height: 8px;
  border-radius: 99px;
  background: #fff;
  transform: translateX(-50%);
  animation: scrollHint 1.8s ease infinite;
}

@keyframes scrollHint {
  0%, 100% {
    transform: translate(-50%, 0);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, 10px);
    opacity: 0.4;
  }
}

/* 横向滑动栏目卡片 */
.scroller-wrap {
  overflow: hidden;
}

.scroller {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 4px 2px 22px 2px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.scroller::-webkit-scrollbar {
  display: none;
}

.channel-card {
  flex: 0 0 280px;
  width: 280px;
  scroll-snap-align: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.channel-card__cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--sink);
}

.channel-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.channel-card:hover .channel-card__cover img {
  transform: scale(1.05);
}

.channel-card__icon {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.channel-card__body {
  padding: 16px 18px 20px;
}

.channel-card__body h3 {
  font-size: 17px;
  font-weight: 750;
  margin-bottom: 6px;
}

.channel-card__body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 13px;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 700;
}

.channel-link:hover {
  color: var(--brand-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.scroller-nav {
  display: flex;
  gap: 8px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.icon-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(224, 68, 45, 0.05);
}

/* 官方精选 */
.featured-layout {
  display: grid;
  grid-template-columns: 58% 42%;
  gap: 28px;
  align-items: stretch;
}

.feature-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  min-height: 440px;
  display: flex;
  align-items: flex-end;
  background-color: var(--night);
}

.feature-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.94;
}

.feature-card__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20, 17, 13, 0.05) 0%, rgba(20, 17, 13, 0.78) 82%);
}

.feature-card__content {
  position: relative;
  padding: 26px;
  color: #fff;
}

.feature-card__content .btn {
  margin-top: 6px;
}

.feature-card h3 {
  font-size: 22px;
  line-height: 1.35;
  margin-bottom: 6px;
  font-weight: 750;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.86);
  font-size: 15px;
  max-width: 40ch;
  margin-bottom: 1rem;
}

.side-list {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 10px 18px 18px;
  box-shadow: var(--shadow-card);
}

.side-list__item {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: opacity 0.2s ease;
}

.side-list__item:last-child {
  border-bottom: 0;
}

.side-list__item:hover {
  opacity: 0.85;
}

.side-num {
  font-size: 13px;
  color: var(--brand);
  font-weight: 650;
  width: 22px;
  flex-shrink: 0;
  text-align: right;
}

.side-thumb {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--sink);
}

.side-body {
  min-width: 0;
}

.side-body strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.side-body span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.side-time {
  margin-left: auto;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.02em;
  white-space: nowrap;
  padding-left: 10px;
}

/* CMS 最新动态 */
.update-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.update-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

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

.update-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--muted);
}

.update-meta .tag {
  display: inline-block;
  background: rgba(224, 68, 45, 0.07);
  color: var(--brand);
  border-radius: 999px;
  padding: 2px 10px;
  font-weight: 700;
  font-size: 12px;
}

.update-date {
  color: var(--gold);
  letter-spacing: 0.04em;
}

.update-card h3 {
  font-size: 18px;
  font-weight: 750;
  line-height: 1.45;
  margin-bottom: 6px;
}

.update-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.readmore {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}

.readmore:hover {
  color: var(--brand-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 16px;
  color: var(--muted);
}

.empty-state svg {
  margin: 0 auto 12px;
  opacity: 0.35;
}

/* 新手专区 */
.duo-layout {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 28px;
  align-items: center;
}

.duo-image {
  aspect-ratio: 16 / 10;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background-color: var(--sink);
}

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

.check-list {
  list-style: none;
  margin: 18px 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
}

.check-list li svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--brand);
}

/* 热门精选编号列表 */
.rank-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.rank-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.rank-num {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--brand);
  margin-bottom: 6px;
}

.rank-card strong {
  display: block;
  font-size: 17px;
  margin-bottom: 6px;
}

.rank-card span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

/* FAQ */
.faq-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

details.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 6px 18px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease;
}

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

details[open].faq-item {
  border-color: rgba(224, 68, 45, 0.35);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--ink);
}

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

.faq-item summary::after {
  content: "+";
  color: var(--brand);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.2s ease;
}

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

.faq-item p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  padding-bottom: 18px;
  margin: 0;
}

/* CTA 订阅 */
.cta-panel {
  background: var(--night);
  border-radius: 26px;
  padding: 46px 30px;
  overflow: hidden;
  position: relative;
  color: #fff;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: center;
}

.cta-panel::before {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(224, 68, 45, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.sub-form {
  display: flex;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 6px 6px 6px 15px;
}

.sub-form input {
  flex: 1;
  background: transparent;
  border: 0;
  color: #fff;
  outline: none;
  font-size: 14px;
  min-width: 0;
}

.sub-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.sub-form .btn {
  border-radius: 999px;
}

.form-note {
  color: rgba(255, 255, 255, 0.45);
  font-size: 12px;
  margin: 12px 0 0;
}

/* 页脚 */
.site-footer {
  background: var(--night);
  color: rgba(255, 255, 255, 0.7);
  padding: 52px 0 24px;
  font-size: 14px;
  line-height: 1.9;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 26px;
  padding-bottom: 34px;
}

.footer-brand {
  color: #fff;
  display: flex;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 12px;
}

.footer-cols-title {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

.footer-link-list li + li {
  margin-top: 10px;
}

.footer-link-list a {
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.2s ease;
}

.footer-link-list a:hover {
  color: var(--brand);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}

svg {
  min-width: 18px;
}

/* 桌面背景内部图片失效时的兜底色 */
.logo-fallback {
  min-width: 20px;
}

/* 响应式 */
@media (max-width: 1024px) {
  .featured-layout {
    grid-template-columns: 1fr;
  }

  .duo-layout {
    grid-template-columns: 1fr;
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }

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

  .nav-links {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    background: rgba(20, 17, 13, 0.95);
    border-radius: 24px;
    padding: 14px;
    gap: 8px;
  }

  .nav-link {
    padding: 12px 14px;
    font-size: 17px;
  }

  .nav-cta {
    margin: 8px 0 0;
    text-align: center;
    padding: 12px 18px;
  }

  .header-inner {
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
  }

  .site-header {
    max-width: 620px;
    margin: 0 auto;
    left: 16px;
    right: 16px;
  }

  .header-inner {
    max-width: none;
  }

  .nav-burger {
    display: inline-flex;
  }

  .nav-check {
    display: none;
  }

  .nav-menu {
    display: none;
    order: 9;
    width: 100%;
    margin-top: 10px;
  }

  .nav-check:checked ~ .nav-menu {
    display: flex;
  }
}

@media (max-width: 1023px) {
  .nav-menu {
    display: none;
    width: 100%;
    order: 9;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-check:checked ~ .nav-menu {
    display: flex;
  }
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 48px 0;
  }

  .hero {
    min-height: 82vh;
  }

  .hero-content {
    padding-bottom: 24px;
  }

  .scroll-hint {
    display: none;
  }

  .scroll-hint::before {
    display: none;
  }

  .channel-card {
    flex: 0 0 68vw;
  }

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

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

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

  .cta-panel {
    padding: 34px 22px;
    border-radius: 18px;
  }

  .sub-form {
    flex-direction: column;
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 0;
    gap: 12px;
  }

  .sub-form input {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    padding: 12px 16px;
  }
}

@media (max-width: 520px) {
  .hero {
    background-position: 68% center;
  }

  .heading-xl {
    font-size: 2.1rem;
  }

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

  .btn {
    width: 100%;
  }

  .feature-card__content {
    padding: 22px;
  }

  .side-list__item {
    flex-wrap: wrap;
  }

  .site-header {
    top: 10px;
  }
}

/* roulang page: category1 */
:root {
    --paper: #F6F1EA;
    --surface: #FFFFFF;
    --sink: #EDE5DA;
    --line: #E3D9CC;
    --ink: #1B1713;
    --muted: #6D6257;
    --brand: #E0442D;
    --brand-deep: #B83224;
    --gold: #C1925C;
    --night: #14110D;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--paper);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.85;
  }

  main {
    display: block;
  }

  h1,
  h2,
  h3,
  h4 {
    margin: 0;
    line-height: 1.35;
    font-weight: 700;
    color: var(--ink);
  }

  p {
    margin: 0 0 1em 0;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease, opacity .2s ease;
  }

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

  ul,
  ol {
    margin: 0;
    padding: 0;
  }

  input,
  button {
    font-family: inherit;
    font-size: inherit;
  }

  button:focus-visible,
  a:focus-visible,
  input:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
  }

  .site-container,
  .container {
    width: min(1120px, 100%);
    margin-inline: auto;
    padding-inline: 24px;
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 14px;
    left: 16px;
    right: 16px;
    z-index: 100;
    margin: 0 auto;
    max-width: 1120px;
    border-radius: 999px;
    background: rgba(20, 17, 13, .84);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 12px 32px rgba(20, 17, 13, .22);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 8px 12px 8px 18px;
    border-radius: 999px;
  }

  .nav-check {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .02em;
    white-space: nowrap;
  }

  .nav-brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .5px;
    box-shadow: 0 6px 14px rgba(224, 68, 45, .3);
  }

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

  .nav-links .nav-link {
    color: rgba(255, 255, 255, .78);
    padding: 9px 14px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
  }

  .nav-links .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .1);
  }

  .nav-links .nav-link.active {
    background: rgba(224, 68, 45, .18);
    color: #FF8371;
    font-weight: 600;
  }

  .nav-cta {
    color: #fff;
    background: var(--brand);
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    border: 1px solid transparent;
    white-space: nowrap;
    box-shadow: 0 6px 16px rgba(224, 68, 45, .25);
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  }

  .nav-cta:hover {
    background: var(--brand-deep);
    box-shadow: 0 10px 22px rgba(224, 68, 45, .35);
  }

  .nav-cta:active {
    transform: translateY(1px) scale(.98);
  }

  .nav-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 40px;
    padding: 8px;
    border-radius: 12px;
    cursor: pointer;
    background: transparent;
  }

  .nav-burger span {
    display: block;
    height: 2px;
    width: 22px;
    border-radius: 2px;
    background: #fff;
    transition: transform .2s ease, opacity .2s ease;
  }

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

  .nav-check:checked ~ .nav-burger span:nth-child(2) {
    opacity: 0;
  }

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

  /* ===== Buttons ===== */
  .btn-primary,
  .btn-outline,
  .btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    font-weight: 700;
    padding: 12px 22px;
    border: 1.5px solid transparent;
    transition: background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 10px 24px rgba(224, 68, 45, .25);
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(224, 68, 45, .35);
  }

  .btn-primary:active,
  .btn-outline:active,
  .btn-outline-light:active {
    transform: translateY(1px) scale(.98);
  }

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

  .btn-outline:hover {
    background: rgba(224, 68, 45, .08);
    border-color: rgba(224, 68, 45, .5);
    color: var(--brand-deep);
  }

  .btn-outline-light {
    background: transparent;
    border-color: rgba(255, 255, 255, .62);
    color: #fff;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, .1);
    border-color: #fff;
    color: #fff;
  }

  /* ===== Hero ===== */
  .category-hero {
    position: relative;
    min-height: 430px;
    padding: 174px 0 84px;
    color: #fff;
    background-size: cover;
    background-position: center;
  }

  .category-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(20, 17, 13, .9) 0%, rgba(20, 17, 13, .65) 45%, rgba(20, 17, 13, .35) 100%);
  }

  .category-hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
  }

  .category-hero .breadcrumb {
    color: rgba(255, 255, 255, .62);
    font-size: 13px;
    margin-bottom: 26px;
    letter-spacing: .03em;
  }

  .category-hero .breadcrumb a {
    color: rgba(255, 255, 255, .82);
  }

  .category-hero .breadcrumb a:hover {
    color: var(--brand);
  }

  .category-hero h1 {
    color: #fff;
    font-size: clamp(2.2rem, 5.5vw, 3.4rem);
    line-height: 1.22;
    letter-spacing: .01em;
  }

  .category-hero .hero-sub {
    font-size: 17px;
    line-height: 1.9;
    max-width: 56ch;
    color: rgba(255, 255, 255, .78);
    margin: 22px 0 0;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
  }

  /* ===== Section basics ===== */
  .section {
    padding: 84px 0;
  }

  .section-alt {
    background: var(--sink);
  }

  .section-head {
    max-width: 640px;
    margin-bottom: 42px;
  }

  .title-bar {
    display: inline-block;
    width: 28px;
    height: 4px;
    border-radius: 4px;
    background: var(--brand);
    margin-bottom: 16px;
  }

  .eyebrow {
    display: block;
    font-size: 13px;
    letter-spacing: .12em;
    color: var(--muted);
    margin-bottom: 12px;
    font-weight: 600;
  }

  .section-alt .eyebrow,
  .section:not(.section-alt) .eyebrow {
    color: var(--muted);
  }

  h2 {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    color: var(--ink);
  }

  h3 {
    font-size: clamp(1.2rem, 1.8vw, 1.4rem);
  }

  .text-muted,
  .muted-copy {
    color: var(--muted);
  }

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

  /* ===== Overview ===== */
  .overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 54px;
    align-items: center;
  }

  .overview-copy p {
    margin-top: 20px;
  }

  .overview-list {
    margin-top: 20px;
    display: grid;
    gap: 16px;
    list-style: none;
  }

  .overview-list li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    line-height: 1.7;
  }

  .list-mark {
    width: 22px;
    height: 22px;
    flex: 0 0 22px;
    margin-top: 3px;
    border-radius: 50%;
    background: rgba(224, 68, 45, .12);
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
  }

  .overview-note {
    margin-top: 24px;
    padding: 18px 20px;
    border-left: 4px solid var(--gold);
    background: var(--surface);
    border-radius: 0 14px 14px 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
  }

  .overview-figure {
    position: relative;
    margin: 0;
    border-radius: 18px;
    overflow: hidden;
    background: var(--sink);
    box-shadow: 0 18px 35px rgba(27, 23, 19, .13);
  }

  .overview-figure img {
    width: 100%;
    height: 330px;
    object-fit: cover;
  }

  .overview-figure figcaption {
    position: absolute;
    left: 18px;
    bottom: 16px;
    color: #fff;
    background: rgba(20, 17, 13, .72);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 13px;
    letter-spacing: .04em;
    backdrop-filter: blur(8px);
  }

  /* ===== Steps ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .step-card,
  .info-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 28px 24px 24px;
    box-shadow: 0 6px 20px rgba(27, 23, 19, .05);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }

  .step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(27, 23, 19, .12);
    border-color: rgba(224, 68, 45, .3);
  }

  .step-num {
    display: block;
    font-size: 32px;
    font-weight: 300;
    color: var(--gold);
    margin-bottom: 10px;
    letter-spacing: .02em;
  }

  .step-card h3 {
    font-size: 18px;
  }

  .step-card p {
    color: var(--muted);
    font-size: 14.5px;
    margin: 12px 0 0;
    line-height: 1.8;
  }

  /* ===== Guide duo ===== */
  .guide-duo {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 30px;
    align-items: stretch;
  }

  .guide-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 6px 20px rgba(27, 23, 19, .05);
  }

  .guide-panel p {
    color: var(--muted);
  }

  .guide-points {
    display: grid;
    gap: 12px;
    margin: 22px 0 0;
    list-style: none;
  }

  .guide-points li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    line-height: 1.7;
    color: var(--ink);
  }

  .guide-points li svg {
    flex: 0 0 18px;
    margin-top: 5px;
    color: var(--brand);
  }

  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
  }

  .tag-chip {
    color: var(--ink);
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 6px 13px;
    font-size: 13px;
    transition: background .2s ease, border-color .2s ease, color .2s ease;
  }

  .tag-chip:hover {
    background: rgba(224, 68, 45, .1);
    border-color: rgba(224, 68, 45, .5);
    color: var(--brand-deep);
  }

  .quick-entry-list {
    list-style: none;
    margin-top: 8px;
  }

  .quick-entry-list li {
    border-top: 1px solid var(--line);
  }

  .quick-entry-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 2px;
    font-weight: 600;
    color: var(--ink);
  }

  .quick-entry-list a:hover {
    color: var(--brand);
  }

  .quick-entry-list .entry-sub {
    display: block;
    font-weight: 400;
    color: var(--muted);
    font-size: 13px;
    margin-top: 2px;
  }

  /* ===== Entry zone ===== */
  .entry-zone {
    background: var(--night);
    padding: 0;
    color: #fff;
  }

  .entry-panel {
    padding: 72px 0;
    position: relative;
    background-size: cover;
    background-position: center;
  }

  .entry-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(224, 68, 45, .18), transparent 46%), linear-gradient(90deg, rgba(20, 17, 13, .93), rgba(20, 17, 13, .8));
  }

  .entry-content {
    position: relative;
    z-index: 2;
  }

  .entry-content .section-head {
    max-width: 620px;
    margin: 0 0 40px;
  }

  .entry-content h2 {
    color: #fff;
  }

  .entry-content .eyebrow {
    color: rgba(255, 255, 255, .58);
  }

  .entry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .entry-card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 18px;
    padding: 22px 20px;
    transition: background .2s ease, transform .2s ease, border-color .2s ease;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 150px;
  }

  .entry-card:hover {
    background: rgba(255, 255, 255, .1);
    border-color: rgba(224, 68, 45, .5);
    transform: translateY(-3px);
  }

  .entry-card .icon-circle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(224, 68, 45, .22);
    color: #FF8371;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
  }

  .entry-card h3 {
    font-size: 17px;
    color: #fff;
  }

  .entry-card p {
    margin: 0;
    color: rgba(255, 255, 255, .58);
    font-size: 13px;
    line-height: 1.75;
  }

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

  .faq-list {
    display: grid;
    gap: 14px;
    margin-top: 6px;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(27, 23, 19, .04);
    transition: border-color .2s ease, box-shadow .2s ease;
  }

  .faq-item[open] {
    border-color: rgba(224, 68, 45, .35);
    box-shadow: 0 10px 24px rgba(27, 23, 19, .08);
  }

  .faq-summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 19px 24px;
    font-weight: 600;
    font-size: 16px;
  }

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

  .faq-summary::after {
    content: "+";
    flex: 0 0 30px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--paper);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    font-size: 20px;
    font-weight: 400;
    transition: background .2s ease, color .2s ease;
  }

  .faq-item[open] .faq-summary::after {
    content: "−";
    background: rgba(224, 68, 45, .12);
    color: var(--brand-deep);
  }

  .faq-body {
    padding: 0 24px 22px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.85;
    max-width: 64ch;
  }

  /* ===== Subscribe CTA ===== */
  .cta-zone {
    padding: 24px 0 84px;
  }

  .cta-panel {
    background: var(--night);
    border-radius: 24px;
    color: #fff;
    padding: 52px;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    align-items: center;
    gap: 42px;
    background-image: radial-gradient(circle at 70% 0%, rgba(224, 68, 45, .2), transparent 44%);
  }

  .cta-panel h2 {
    color: #fff;
  }

  .cta-panel p {
    color: rgba(255, 255, 255, .62);
    margin-top: 14px;
    max-width: 38ch;
  }

  .subscribe-form {
    display: flex;
    gap: 10px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    padding: 8px;
    border-radius: 999px;
    flex-wrap: wrap;
  }

  .subscribe-form input {
    flex: 1 1 220px;
    background: transparent;
    border: none;
    color: #fff;
    padding: 10px 16px;
    font-size: 15px;
    outline: none;
    min-width: 0;
  }

  .subscribe-form input::placeholder {
    color: rgba(255, 255, 255, .48);
  }

  .subscribe-form input:focus {
    box-shadow: 0 0 0 2px var(--brand);
    border-radius: 999px;
  }

  .cta-note {
    margin-top: 12px;
    font-size: 12px;
    color: rgba(255, 255, 255, .4);
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--night);
    color: #fff;
    padding: 70px 0 36px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr 1fr 1fr;
    gap: 44px;
  }

  .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 18px;
    color: #fff;
  }

  .footer-cols-title {
    font-weight: 600;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, .92);
  }

  .footer-link-list {
    list-style: none;
    display: grid;
    gap: 11px;
  }

  .footer-link-list a {
    color: rgba(255, 255, 255, .56);
    font-size: 14.5px;
  }

  .footer-link-list a:hover {
    color: #FF8371;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    margin-top: 54px;
    padding-top: 22px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    color: rgba(255, 255, 255, .35);
    font-size: 13px;
  }

  /* ===== Responsive ===== */
  @media (max-width: 960px) {
    .overview-grid,
    .guide-duo {
      grid-template-columns: 1fr;
      gap: 32px;
    }

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

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

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

    .cta-panel {
      grid-template-columns: 1fr;
      padding: 36px;
    }
  }

  @media (max-width: 780px) {
    .nav-burger {
      display: inline-flex;
    }

    .nav-menu {
      display: none;
    }

    .nav-check:checked ~ .nav-menu {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 12px;
      position: absolute;
      top: calc(100% + 14px);
      left: 0;
      right: 0;
      background: rgba(20, 17, 13, .96);
      border-radius: 22px;
      padding: 16px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, .28);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .nav-menu .nav-link {
      padding: 12px 16px;
      font-size: 16px;
    }

    .nav-menu .nav-cta {
      padding: 12px 18px;
      justify-content: center;
    }

    .category-hero {
      min-height: 380px;
      padding: 150px 0 64px;
    }

    .category-hero h1 {
      font-size: clamp(2rem, 8vw, 2.7rem);
    }

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

    .btn-primary,
    .btn-outline,
    .btn-outline-light {
      justify-content: center;
    }

    .subscribe-form {
      border-radius: 18px;
      padding: 12px;
    }

    .subscribe-form input {
      background: rgba(255, 255, 255, .08);
      border-radius: 999px;
      padding: 12px 16px;
    }
  }

  @media (max-width: 560px) {
    .section {
      padding: 64px 0;
    }

    .category-hero {
      padding-inline: 4px;
    }

    .steps-grid,
    .entry-grid {
      grid-template-columns: 1fr;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 30px;
    }

    .guide-panel,
    .entry-panel,
    .cta-panel {
      padding: 28px 22px;
    }

    .site-header {
      left: 8px;
      right: 8px;
      top: 8px;
    }

    .header-inner {
      padding: 8px 8px 8px 14px;
    }

    .nav-brand {
      font-size: 16px;
      gap: 7px;
    }

    .nav-brand-mark {
      width: 32px;
      height: 32px;
    }

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

    .footer-bottom {
      flex-direction: column;
    }
  }

/* roulang page: article */
:root {
    --paper: #F6F1EA;
    --surface: #FFFFFF;
    --sink: #EDE5DA;
    --line: #E3D9CC;
    --ink: #1B1713;
    --muted: #6D6257;
    --brand: #E0442D;
    --brand-deep: #B83224;
    --gold: #C1925C;
    --night: #14110D;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 6px 20px rgba(27, 23, 19, 0.05);
    --shadow-hover: 0 14px 30px rgba(27, 23, 19, 0.12);
    --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-stack);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
  }

  .site-container {
    width: min(100% - 32px, 1120px);
    margin-inline: auto;
  }

  .section-pad {
    padding-block: 96px;
  }

  .section-pad-sm {
    padding-block: 60px;
  }

  .section-title-wrap {
    max-width: 720px;
    margin-bottom: 48px;
  }

  .kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--brand);
    font-weight: 600;
  }

  .kicker::before {
    content: "";
    width: 24px;
    height: 4px;
    border-radius: 999px;
    background: var(--brand);
    display: inline-block;
  }

  .section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--ink);
    margin: 12px 0 0;
  }

  .section-desc {
    margin: 14px 0 0;
    color: var(--muted);
    line-height: 1.85;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    padding: 12px 22px;
    font-size: 15px;
    font-weight: 650;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    line-height: 1.2;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 8px 18px rgba(224, 68, 45, 0.2);
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(224, 68, 45, 0.28);
  }

  .btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 4px 10px rgba(224, 68, 45, 0.2);
  }

  .btn-ghost-light {
    background: transparent;
    border-color: rgba(246, 241, 234, 0.55);
    color: #fff;
  }

  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.14);
  }

  .site-header {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: min(calc(100% - 24px), 920px);
    z-index: 100;
    background: rgba(20, 17, 13, 0.84);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
  }

  .header-inner {
    display: flex;
    align-items: center;
    padding: 8px 10px 8px 12px;
  }

  .nav-check {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.4px;
    white-space: nowrap;
  }

  .nav-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: var(--brand);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    flex: 0 0 auto;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: auto;
  }

  .nav-link {
    display: inline-block;
    color: rgba(255, 255, 255, 0.76);
    font-size: 14px;
    padding: 7px 12px;
    border-radius: 999px;
    transition: all 0.2s ease;
  }

  .nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
  }

  .nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
  }

  .nav-link.active::after {
    content: "";
    display: block;
    width: 8px;
    height: 3px;
    background: var(--brand);
    border-radius: 999px;
    margin: 3px auto 0;
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand);
    border-radius: 999px;
    color: #fff;
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 650;
    margin-left: 8px;
    transition: background 0.2s ease, transform 0.2s ease;
  }

  .nav-cta:hover {
    background: var(--brand-deep);
    color: #fff;
    transform: translateY(-1px);
  }

  .nav-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    margin-left: auto;
    width: 38px;
    height: 38px;
    padding: 8px;
    border-radius: 999px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.08);
  }

  .nav-burger span {
    height: 2px;
    width: 100%;
    background: #fff;
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  /* 文章页首屏 */
  .article-hero {
    position: relative;
    min-height: 44vh;
    display: flex;
    align-items: flex-end;
    color: #fff;
    padding: 170px 0 74px;
    background:
      linear-gradient(75deg, rgba(20, 17, 13, 0.95) 10%, rgba(20, 17, 13, 0.7) 68%, rgba(20, 17, 13, 0.42) 100%),
      url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    background-color: var(--night);
  }

  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 26px;
    color: rgba(255, 255, 255, 0.55);
  }

  .breadcrumb a {
    color: rgba(255, 255, 255, 0.82);
  }

  .breadcrumb a:hover {
    color: #fff;
  }

  .bc-sep {
    color: rgba(255, 255, 255, 0.32);
  }

  .bc-current {
    color: rgba(255, 255, 255, 0.92);
    font-weight: 550;
    max-width: 360px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .article-title-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
  }

  .article-tag {
    display: inline-block;
    background: rgba(224, 68, 45, 0.22);
    border: 1px solid rgba(224, 68, 45, 0.4);
    color: #ffd7cf;
    font-size: 12px;
    letter-spacing: 0.3px;
    padding: 3px 10px;
    border-radius: 999px;
  }

  .article-date {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gold);
    letter-spacing: 0.3px;
  }

  .article-date svg {
    width: 16px;
    height: 16px;
    stroke: var(--gold);
  }

  .article-source {
    color: rgba(255, 255, 255, 0.48);
  }

  .article-hero h1 {
    max-width: 920px;
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 700;
    line-height: 1.24;
    letter-spacing: -0.01em;
    color: #fff;
  }

  /* 正文区 */
  .article-main {
    padding: 0 0 90px;
    margin-top: -52px;
    position: relative;
    z-index: 2;
  }

  .article-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow-sm);
    padding: clamp(24px, 5vw, 66px);
  }

  .article-body {
    max-width: 720px;
    margin: 0 auto;
    font-size: 17px;
    line-height: 1.9;
    color: var(--ink);
  }

  .article-body > *:first-child {
    margin-top: 0;
  }

  .article-body h2 {
    font-size: clamp(1.35rem, 2.8vw, 1.7rem);
    font-weight: 700;
    line-height: 1.3;
    margin: 2.2em 0 0.8em;
    color: var(--ink);
  }

  .article-body h3 {
    font-size: 1.2rem;
    font-weight: 650;
    margin: 2em 0 0.6em;
    color: var(--ink);
  }

  .article-body p {
    margin: 0 0 1.3em;
  }

  .article-body a {
    color: var(--brand-deep);
    font-weight: 550;
    text-decoration: underline;
    text-decoration-color: rgba(224, 68, 45, 0.3);
    text-underline-offset: 3px;
  }

  .article-body a:hover {
    color: var(--brand);
    text-decoration-color: rgba(224, 68, 45, 0.65);
  }

  .article-body ul,
  .article-body ol {
    margin: 0 0 1.5em;
    padding-left: 1.4em;
    display: grid;
    gap: 0.55em;
  }

  .article-body li::marker {
    color: var(--gold);
  }

  .article-body blockquote {
    border-left: 4px solid var(--brand);
    background: rgba(224, 68, 45, 0.05);
    border-radius: 10px;
    padding: 1em 1.3em;
    margin: 1.8em 0;
    color: var(--muted);
  }

  .article-body img {
    border-radius: var(--radius-md);
    margin: 1.5em 0;
  }

  .article-body pre {
    background: var(--night);
    color: #f3ede4;
    border-radius: 14px;
    padding: 20px;
    overflow-x: auto;
    line-height: 1.7;
    font-size: 14px;
  }

  .article-body hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 2.2em 0;
  }

  .article-footnote {
    max-width: 720px;
    margin: 40px auto 0;
    padding: 18px 0 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 10px;
  }

  .article-footnote strong {
    color: var(--ink);
    font-weight: 650;
  }

  .empty-box {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    padding: 50px 16px 30px;
  }

  .empty-box-icon {
    width: 54px;
    height: 54px;
    border-radius: 999px;
    background: rgba(224, 68, 45, 0.1);
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 18px;
  }

  .empty-box h2 {
    font-size: 1.45rem;
    margin: 0 0 10px;
    color: var(--ink);
  }

  .empty-box p {
    color: var(--muted);
    margin: 0 0 24px;
  }

  /* 继续浏览栏目 */
  .explore-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .explore-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

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

  .explore-card-media {
    aspect-ratio: 16 / 7;
    overflow: hidden;
    background: var(--night);
  }

  .explore-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
  }

  .explore-card:hover .explore-card-media img {
    transform: scale(1.03);
  }

  .explore-card-content {
    padding: 22px 24px 24px;
  }

  .card-kicker {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 1.2px;
    color: var(--brand);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .explore-card-content h3 {
    font-size: 1.3rem;
    margin: 0 0 8px;
    color: var(--ink);
    font-weight: 700;
    line-height: 1.3;
  }

  .explore-card-content p {
    margin: 0 0 18px;
    color: var(--muted);
    line-height: 1.8;
    font-size: 15px;
  }

  .card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand-deep);
    font-size: 14px;
    font-weight: 650;
    transition: gap 0.2s ease;
  }

  .explore-card:hover .card-more {
    gap: 10px;
  }

  /* FAQ */
  .faq-wrap {
    max-width: 860px;
    margin: 0 auto;
    display: grid;
    gap: 14px;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 18px 22px;
    box-shadow: 0 2px 8px rgba(27, 23, 19, 0.02);
    transition: border-color 0.2s ease;
  }

  .faq-item[open] {
    border-color: rgba(224, 68, 45, 0.34);
  }

  .faq-item summary {
    cursor: pointer;
    font-size: 16px;
    font-weight: 650;
    color: var(--ink);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 4px 0;
  }

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

  .faq-item summary::after {
    content: "+";
    font-size: 20px;
    font-weight: 400;
    line-height: 1;
    color: var(--brand);
    transition: transform 0.2s ease;
    flex: 0 0 auto;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
  }

  .faq-item p {
    margin: 14px 0 4px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.8;
  }

  /* CTA 订阅区 */
  .cta-section {
    padding-block: 80px;
  }

  .cta-panel {
    background: var(--night);
    border-radius: 28px;
    padding: clamp(28px, 5vw, 64px);
    color: #fff;
    overflow: hidden;
    position: relative;
  }

  .cta-panel::after {
    content: "";
    position: absolute;
    right: -10%;
    top: -40%;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(224, 68, 45, 0.28) 0%, rgba(224, 68, 45, 0) 70%);
    pointer-events: none;
  }

  .cta-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
  }

  .cta-grid h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    line-height: 1.3;
    margin: 0 0 14px;
    font-weight: 700;
    color: #fff;
  }

  .cta-grid p {
    color: rgba(255, 255, 255, 0.64);
    line-height: 1.8;
    max-width: 44ch;
    margin: 0;
  }

  .subscribe-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: min(100%, 380px);
  }

  .subscribe-form .input-row {
    display: flex;
    gap: 8px;
  }

  .subscribe-form input[type="email"] {
    flex: 1;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    padding: 12px 16px;
    font-size: 15px;
    min-width: 0;
  }

  .subscribe-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.42);
  }

  .subscribe-form input[type="email"]:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(224, 68, 45, 0.28);
  }

  .subscribe-form .btn {
    padding: 12px 20px;
    white-space: nowrap;
  }

  .sub-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.36);
  }

  .sub-success {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 12px;
    padding: 18px 20px;
    color: rgba(255, 255, 255, 0.88);
    margin: 0;
    font-size: 15px;
  }

  /* 页脚 */
  .site-footer {
    background: var(--night);
    color: rgba(255, 255, 255, 0.7);
    padding: 70px 0 24px;
  }

  .site-footer .site-container {
    max-width: 1120px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 0.9fr;
    gap: 48px;
    margin-bottom: 44px;
  }

  .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
  }

  .footer-cols-title {
    color: #fff;
    font-size: 14px;
    font-weight: 650;
    margin-bottom: 16px;
    letter-spacing: 0.3px;
  }

  .footer-link-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
  }

  .footer-link-list a {
    color: rgba(255, 255, 255, 0.58);
    font-size: 14.5px;
    transition: color 0.2s ease;
  }

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

  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 22px;
    color: rgba(255, 255, 255, 0.32);
    font-size: 13px;
  }

  @media (max-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

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

    .subscribe-form {
      width: 100%;
    }
  }

  @media (max-width: 860px) {
    .section-pad {
      padding-block: 72px;
    }

    .header-inner {
      padding: 6px 6px 6px 12px;
    }

    .nav-burger {
      display: inline-flex;
    }

    .nav-menu {
      position: fixed;
      top: 70px;
      left: 14px;
      right: 14px;
      display: flex;
      flex-direction: column;
      align-items: stretch;
      background: rgba(20, 17, 13, 0.97);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 22px;
      padding: 18px;
      gap: 8px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
      box-shadow: 0 18px 48px rgba(0, 0, 0, 0.3);
    }

    .nav-check:checked ~ .nav-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .nav-link {
      font-size: 18px;
      padding: 12px 16px;
      color: rgba(255, 255, 255, 0.82);
      border-radius: 14px;
    }

    .nav-link.active {
      background: rgba(255, 255, 255, 0.08);
    }

    .nav-link.active::after {
      margin-left: 0;
    }

    .nav-cta {
      margin: 10px 0 0;
      border-radius: 14px;
      padding: 13px 16px;
      font-size: 16px;
    }

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

    .nav-check:checked ~ .nav-burger span:nth-child(2) {
      opacity: 0;
    }

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

    .article-hero {
      padding-top: 150px;
      min-height: 40vh;
    }

    .bc-current {
      max-width: 220px;
    }
  }

  @media (max-width: 640px) {
    .article-main {
      padding-left: 14px;
      padding-right: 14px;
    }

    .article-card {
      padding: 26px 18px;
      border-radius: 18px;
    }

    .article-body {
      font-size: 16px;
      line-height: 1.85;
    }

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

    .explore-card-media {
      aspect-ratio: 16 / 9;
    }

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

    .subscribe-form .input-row {
      flex-direction: column;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }

    .footer-bottom span:last-child {
      margin-top: 6px;
    }
  }

/* roulang page: category2 */
:root {
    --paper: #F6F1EA;
    --surface: #FFFFFF;
    --sink: #EDE5DA;
    --line: #E3D9CC;
    --ink: #1B1713;
    --muted: #6D6257;
    --brand: #E0442D;
    --brand-deep: #B83224;
    --gold: #C1925C;
    --night: #14110D;
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    --shadow-sm: 0 6px 20px rgba(27, 23, 19, 0.05);
    --shadow-md: 0 14px 30px rgba(27, 23, 19, 0.12);
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: var(--font-sans);
    background-color: var(--paper);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }

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

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

  button,
  input {
    font-family: inherit;
  }

  a:focus-visible,
  button:focus-visible,
  summary:focus-visible,
  input:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
    border-radius: 8px;
  }

  .site-container {
    width: 100%;
    max-width: 1120px;
    margin-inline: auto;
    padding-inline: 24px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: 999px;
    border: 1.5px solid transparent;
    font-weight: 600;
    font-size: 14.5px;
    line-height: 1.2;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
    cursor: pointer;
  }

  .btn:hover {
    transform: translateY(-1px);
  }

  .btn:active {
    transform: translateY(1px) scale(0.98);
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 10px 22px rgba(224, 68, 45, 0.26);
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    box-shadow: 0 14px 30px rgba(224, 68, 45, 0.32);
  }

  .btn-ghost-light {
    border-color: rgba(255, 255, 255, 0.78);
    color: #fff;
    background: transparent;
  }

  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
  }

  .btn-quiet {
    background: var(--sink);
    color: var(--ink);
    padding: 8px 15px;
    font-size: 13.5px;
  }

  .btn-quiet:hover {
    background: rgba(224, 68, 45, 0.12);
    color: var(--brand-deep);
  }

  .section {
    padding: 76px 0;
  }

  .section--tinted {
    background: var(--sink);
  }

  section[id] {
    scroll-margin-top: 110px;
  }

  .section-title-wrap {
    max-width: 760px;
    margin-bottom: 36px;
  }

  .section-kicker {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    letter-spacing: 2.2px;
    font-weight: 700;
    color: var(--brand);
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-kicker::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 4px;
    border-radius: 8px;
    background: var(--brand);
  }

  .section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.3;
    font-weight: 700;
    margin: 0 0 12px;
  }

  .section-lead {
    font-size: 16px;
    color: var(--muted);
    line-height: 1.8;
    margin: 0;
  }

  .panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow-sm);
  }

  .cover-frame {
    display: block;
    overflow: hidden;
    background: var(--sink);
    border-radius: 18px;
  }

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

  /* Header */
  .site-header {
    position: fixed;
    top: 16px;
    left: 0;
    right: 0;
    z-index: 999;
    padding: 0 18px;
  }

  .header-inner {
    position: relative;
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 10px 9px 14px;
    background: rgba(20, 17, 13, 0.84);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-radius: 999px;
    box-shadow: 0 18px 45px rgba(20, 17, 13, 0.22);
  }

  .nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.01em;
    padding: 4px 8px 4px 4px;
    border-radius: 999px;
    white-space: nowrap;
  }

  .nav-brand .nav-brand-mark {
    flex: 0 0 auto;
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--brand);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 14px;
  }

  .nav-check {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 1px;
    height: 1px;
  }

  .nav-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    border-radius: 999px;
    cursor: pointer;
    background: transparent;
    border: 0;
    margin-left: auto;
  }

  .nav-burger span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 6px;
    background: #fff;
    transition: background 0.2s ease;
  }

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

  .nav-links .nav-link {
    color: rgba(255, 255, 255, 0.74);
    font-size: 14.5px;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: 999px;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
  }

  .nav-links .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
  }

  .nav-links .nav-link.active {
    color: #fff;
    position: relative;
  }

  .nav-links .nav-link.active::after {
    content: "";
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--brand);
    margin: 5px auto 0;
  }

  .nav-cta {
    background: var(--brand);
    color: #fff;
    font-size: 13.5px;
    font-weight: 700;
    padding: 9px 17px;
    border-radius: 999px;
    margin-left: 8px;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
  }

  .nav-cta:hover {
    background: var(--brand-deep);
    box-shadow: 0 8px 22px rgba(224, 68, 45, 0.35);
    transform: translateY(-1px);
  }

  @media (max-width: 1023px) {
    .header-inner {
      border-radius: 30px;
      padding: 8px 8px 8px 12px;
    }

    .nav-burger {
      display: flex;
      margin-left: auto;
    }

    .nav-menu {
      display: none;
      position: absolute;
      top: calc(100% + 14px);
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      background: rgba(20, 17, 13, 0.96);
      border-radius: 28px;
      padding: 18px;
      gap: 6px;
      box-shadow: 0 24px 60px rgba(20, 17, 13, 0.28);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-check:checked ~ .nav-menu {
      display: flex;
    }

    .nav-links .nav-link {
      font-size: 17px;
      color: rgba(255, 255, 255, 0.9);
      padding: 11px 14px;
    }

    .nav-links .nav-link.active::after {
      margin-left: 14px;
    }

    .nav-cta {
      width: 100%;
      text-align: center;
      justify-content: center;
      padding: 13px 18px;
      margin-left: 0;
      margin-top: 10px;
    }
  }

  /* Page hero */
  .page-hero {
    position: relative;
    color: #fff;
    background-color: var(--night);
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: flex-end;
    min-height: 460px;
    padding-top: 160px;
    padding-bottom: 68px;
  }

  .page-hero--hot {
    background-image: linear-gradient(91deg, rgba(20, 17, 13, 0.95) 0%, rgba(20, 17, 13, 0.74) 44%, rgba(20, 17, 13, 0.35) 100%), url('/assets/images/backpic/back-3.webp');
  }

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

  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.66);
    margin-bottom: 16px;
  }

  .breadcrumb a {
    color: rgba(255, 255, 255, 0.82);
    transition: color 0.2s ease;
  }

  .breadcrumb a:hover {
    color: #fff;
  }

  .breadcrumb span {
    color: var(--gold);
  }

  .hero-title {
    font-size: clamp(2.1rem, 5.5vw, 3.7rem);
    line-height: 1.2;
    margin: 0 0 18px;
    max-width: 860px;
    letter-spacing: 0.01em;
    font-weight: 700;
  }

  .hero-desc {
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    color: rgba(255, 255, 255, 0.86);
    max-width: 640px;
    line-height: 1.85;
    margin-bottom: 28px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  /* Intro grid */
  .intro-grid {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    align-items: stretch;
    gap: 28px;
  }

  .intro-left {
    padding: 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .intro-title {
    font-size: 1.5rem;
    line-height: 1.35;
    font-weight: 700;
    margin: 0 0 14px;
  }

  .intro-copy {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 22px;
  }

  .intro-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 12px;
  }

  .intro-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--ink);
    font-size: 15px;
  }

  .intro-list li::before {
    content: "";
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--brand);
    margin-top: 10px;
  }

  .intro-media {
    min-height: 360px;
    position: relative;
    overflow: hidden;
    border-radius: 22px;
    color: #fff;
  }

  .intro-media img {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    object-fit: cover;
  }

  .intro-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(20, 17, 13, 0.08), rgba(20, 17, 13, 0.55));
  }

  .intro-media-caption {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 22px;
    z-index: 2;
  }

  .intro-media-caption strong {
    display: block;
    font-size: 20px;
    margin-bottom: 6px;
  }

  .intro-media-caption p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
  }

  /* Heat list */
  .heat-panel {
    border-radius: 24px;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
  }

  .heat-row {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto;
    align-items: center;
    gap: 18px;
    padding: 22px 26px;
    transition: background 0.2s ease;
  }

  .heat-row + .heat-row {
    border-top: 1px solid var(--line);
  }

  .heat-row:hover {
    background: rgba(245, 240, 233, 0.7);
  }

  .heat-no {
    font-size: 22px;
    font-weight: 500;
    color: var(--brand);
    letter-spacing: 0.02em;
  }

  .heat-info h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 6px;
  }

  .heat-info p {
    margin: 0;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.7;
  }

  .heat-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 24px;
    align-items: stretch;
  }

  .heat-aside {
    background: var(--night);
    color: #fff;
    border-radius: 24px;
    padding: 30px;
    background-image: radial-gradient(circle at 80% 18%, rgba(224, 68, 45, 0.28), transparent 38%);
  }

  .heat-aside h3 {
    margin: 0 0 16px;
    font-size: 20px;
  }

  .heat-aside ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
  }

  .heat-aside li {
    padding-left: 22px;
    position: relative;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14.5px;
    line-height: 1.8;
  }

  .heat-aside li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.66em;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--gold);
  }

  .heat-note {
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
  }

  /* Topic cards */
  .topic-card {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .topic-card + .topic-card {
    margin-top: 26px;
  }

  .topic-card:nth-child(even) .topic-media {
    order: 2;
  }

  .topic-media {
    min-height: 260px;
    background: var(--sink);
  }

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

  .topic-body {
    padding: 34px 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }

  .topic-body h3 {
    font-size: 23px;
    margin: 0 0 14px;
  }

  .topic-body p {
    color: var(--muted);
    line-height: 1.9;
    font-size: 16px;
    margin: 0 0 22px;
  }

  /* Steps */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .step-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 26px 22px;
    box-shadow: var(--shadow-sm);
    position: relative;
  }

  .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: rgba(224, 68, 45, 0.12);
    color: var(--brand);
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 18px;
  }

  .step-card h3 {
    font-size: 17px;
    margin: 0 0 10px;
  }

  .step-card p {
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.8;
    margin: 0;
  }

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

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    margin-bottom: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .faq-item[open] {
    border-color: rgba(224, 68, 45, 0.35);
    box-shadow: 0 10px 28px rgba(27, 23, 19, 0.06);
  }

  .faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    cursor: pointer;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.6;
  }

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

  .faq-item summary::after {
    content: "+";
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--sink);
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 500;
    transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
    background: var(--brand);
    color: #fff;
  }

  .faq-body {
    padding: 0 24px 22px;
  }

  .faq-body p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.9;
  }

  /* Subscribe CTA */
  .subscribe-cta {
    background-color: var(--night);
    background-image: radial-gradient(circle at 85% 15%, rgba(224, 68, 45, 0.22), transparent 40%);
    border-radius: 30px;
    color: #fff;
    padding: 52px 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .subscribe-cta h2 {
    font-size: clamp(1.35rem, 2.5vw, 1.8rem);
    line-height: 1.4;
    margin: 0 0 12px;
  }

  .subscribe-cta p {
    margin: 0 0 14px;
    color: rgba(255, 255, 255, 0.66);
    font-size: 15px;
    line-height: 1.85;
  }

  .subscribe-form-wrap {
    max-width: 100%;
  }

  .subscribe-form {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .subscribe-form input[type="email"] {
    flex: 1 1 auto;
    width: 100%;
    border: 0;
    border-radius: 999px;
    padding: 13px 20px;
    font-size: 15px;
    color: var(--ink);
    background: #fff;
    border: 1.5px solid transparent;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .subscribe-form input[type="email"]:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(224, 68, 45, 0.22);
  }

  .subscribe-note {
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.45);
    font-size: 13px;
    line-height: 1.7;
  }

  /* Footer */
  .site-footer {
    background: var(--night);
    color: rgba(255, 255, 255, 0.76);
    padding: 68px 0 30px;
    margin-top: 50px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 42px;
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 16px;
  }

  .footer-brand .nav-brand-mark {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
  }

  .footer-cols-title {
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 16px;
  }

  .footer-link-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
  }

  .footer-link-list a {
    color: rgba(255, 255, 255, 0.58);
    font-size: 14px;
    transition: color 0.2s ease, padding-left 0.2s ease;
  }

  .footer-link-list a:hover {
    color: #fff;
    padding-left: 4px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 44px;
    padding-top: 22px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
  }

  @media (max-width: 1023px) {
    .intro-grid,
    .heat-layout {
      grid-template-columns: 1fr;
    }

    .intro-media {
      min-height: 280px;
    }

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

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

    .subscribe-cta {
      grid-template-columns: 1fr;
      padding: 38px 28px;
    }
  }

  @media (max-width: 767px) {
    .section {
      padding: 54px 0;
    }

    .page-hero {
      min-height: 430px;
      padding-top: 150px;
      padding-bottom: 52px;
    }

    .heat-row {
      grid-template-columns: 42px minmax(0, 1fr);
      padding: 18px 18px;
    }

    .heat-row .btn-quiet {
      grid-column: 2;
      justify-self: start;
      margin-top: 4px;
    }

    .topic-card,
    .topic-card:nth-child(even) .topic-media {
      grid-template-columns: 1fr;
      order: unset;
    }

    .topic-media,
    .topic-card:nth-child(even) .topic-media {
      min-height: 200px;
    }

    .topic-body {
      padding: 26px 22px;
    }

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

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

    .subscribe-form {
      flex-direction: column;
    }

    .subscribe-form .btn {
      width: 100%;
    }

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

    .intro-left {
      padding: 26px 22px;
    }
  }

  @media (max-width: 520px) {
    .header-inner {
      border-radius: 24px;
    }

    .nav-brand .nav-brand-mark {
      width: 34px;
      height: 34px;
    }

    .nav-brand {
      font-size: 14.5px;
    }

    .page-hero {
      min-height: 390px;
    }

    .footer-bottom {
      flex-direction: column;
      gap: 6px;
    }

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

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