/* roulang page: index */
:root {
  --ink: #1B1B22;
  --ink-soft: #2C2C36;
  --amber: #C87533;
  --amber-light: #E8A36B;
  --paper: #F6F3EE;
  --white: #FFFFFF;
  --primary: #232020;
  --secondary: #6B6459;
  --line: #E5DFD6;
  --sand: #EFEAE2;
  --radius-card: 16px;
  --radius-component: 10px;
  --radius-button: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 8px rgba(27,27,34,0.06);
  --shadow-lift: 0 12px 32px rgba(27,27,34,0.10);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--paper);
  color: var(--primary);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all 0.18s ease; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-badge {
  width: 38px;
  height: 38px;
  background: var(--ink);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
  line-height: 1;
}
.logo-text { font-size: 17px; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; }
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
  border-radius: 2px;
}
.main-nav a:hover { color: var(--amber); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--amber); font-weight: 600; }
.main-nav a.active::after { transform: scaleX(1); }
.header-cta {
  background: var(--amber);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 9px 22px;
  border-radius: var(--radius-button);
  transition: all 0.18s ease;
  white-space: nowrap;
  border: none;
}
.header-cta:hover { background: var(--amber-light); transform: translateY(-1px); box-shadow: var(--shadow-lift); }
.header-cta:active { background: #A85F28; transform: translateY(0); }
.hamburger { display: none; background: none; border: none; width: 38px; height: 38px; border-radius: 8px; align-items: center; justify-content: center; color: var(--primary); }
.hamburger:hover { background: var(--sand); }
/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 16px 24px;
  z-index: 49;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-card);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
}
.mobile-nav a:hover { background: var(--sand); }
.mobile-nav a.active { background: var(--sand); color: var(--amber); font-weight: 600; }
/* Bottom Tab */
.bottom-tab {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--white);
  border-top: 1px solid var(--line);
  z-index: 48;
  align-items: center;
  justify-content: space-around;
  padding: 0 8px;
}
.bottom-tab a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--secondary);
  padding: 6px 10px;
  border-radius: 10px;
  transition: all 0.18s ease;
}
.bottom-tab a svg { width: 20px; height: 20px; }
.bottom-tab a:hover { color: var(--amber); }
.bottom-tab a.active { color: var(--amber); font-weight: 600; background: rgba(200,117,51,0.08); }

@media (max-width: 768px) {
  .main-nav { display: none; }
  .header-cta { display: none; }
  .hamburger { display: flex; }
  .bottom-tab { display: flex; }
  body { padding-bottom: 64px; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 88px 0 80px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 6fr 6fr;
  gap: 56px;
  align-items: center;
}
.hero-title {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--ink);
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--secondary);
  margin-bottom: 28px;
  line-height: 1.6;
  max-width: 460px;
}
.hero-trust {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: var(--sand);
  border-radius: var(--radius-badge);
  padding: 6px 14px;
  border: 1px solid transparent;
  transition: all 0.18s ease;
}
.trust-badge:hover { border-color: var(--amber); color: var(--amber); }
.hero-btns { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--amber);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-button);
  border: none;
  transition: all 0.18s ease;
}
.btn-primary svg { width: 18px; height: 18px; }
.btn-primary:hover { background: var(--amber-light); transform: translateY(-1px); box-shadow: var(--shadow-lift); }
.btn-primary:active { background: #A85F28; transform: translateY(0); }
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  border: none;
  background: none;
  padding: 10px 8px;
  transition: all 0.18s ease;
}
.btn-text:hover { color: var(--amber); }
.btn-text:hover svg { transform: translateX(4px); }
.btn-text svg { width: 16px; height: 16px; transition: transform 0.18s ease; }
.hero-image-wrap {
  position: relative;
}
.hero-image-wrap img {
  width: 100%;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lift);
}
.hero-brand-stamp {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 80px;
  height: 80px;
  background: var(--amber);
  color: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  transform: rotate(-6deg);
  box-shadow: 0 8px 24px rgba(200,117,51,0.35);
  letter-spacing: -0.5px;
}
@media (max-width: 1024px) {
  .hero-grid { gap: 32px; }
  .hero-title { font-size: 34px; }
}
@media (max-width: 768px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-title { font-size: 30px; }
  .hero-btns { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-text { justify-content: center; width: 100%; }
}

/* ===== Section ===== */
.section-common { padding: 80px 0; }
.section-sand { background: var(--sand); }
.section-ink { background: var(--ink); }
@media (max-width: 768px) {
  .section-common { padding: 48px 0; }
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 44px;
  gap: 24px;
  flex-wrap: wrap;
}
.h2-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.3;
}
.h2-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--amber);
  border-radius: 2px;
  flex-shrink: 0;
}
.h2-sub { font-size: 14px; color: var(--secondary); }
.section-ink .h2-title { color: #fff; }
.section-ink .h2-sub { color: rgba(255,255,255,0.6); }
@media (max-width: 768px) {
  .h2-title { font-size: 24px; }
}

/* ===== Value Cards ===== */
.value-grid {
  display: grid;
  grid-template-columns: 6fr 6fr;
  gap: 24px;
}
.value-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.value-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 32px;
  transition: all 0.2s ease;
}
.value-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-2px); border-color: rgba(200,117,51,0.4); }
.value-card-lg { background: var(--ink); border-color: transparent; }
.value-card-lg:hover { box-shadow: 0 16px 40px rgba(27,27,34,0.2); }
.value-card-lg .value-title { color: #fff; }
.value-card-lg .value-desc { color: rgba(255,255,255,0.7); }
.value-icon {
  width: 44px;
  height: 44px;
  background: rgba(200,117,51,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  margin-bottom: 18px;
}
.value-card-lg .value-icon { background: rgba(200,117,51,0.22); }
.value-icon svg { width: 24px; height: 24px; }
.value-title { font-size: 20px; font-weight: 600; color: var(--primary); margin-bottom: 10px; line-height: 1.4; }
.value-desc { font-size: 14px; line-height: 1.7; color: var(--secondary); }
@media (max-width: 768px) {
  .value-grid { grid-template-columns: 1fr; }
}

/* ===== Carousel ===== */
.carousel-wrap { position: relative; }
.carousel-viewport {
  overflow: hidden;
  padding: 24px 0;
}
.carousel-track {
  display: flex;
  gap: 24px;
  transition: transform 0.4s ease;
}
.carousel-slide {
  flex: 0 0 60%;
  max-width: 60%;
  opacity: 0.7;
  transform: scale(0.95);
  transition: all 0.4s ease;
  position: relative;
}
.carousel-slide.active {
  opacity: 1;
  transform: scale(1);
}
.carousel-slide img {
  width: 100%;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.4s ease;
}
.carousel-slide.active img { box-shadow: var(--shadow-lift); }
.carousel-caption {
  text-align: center;
  font-size: 14px;
  color: var(--secondary);
  margin-top: 12px;
}
.carousel-arrow {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all 0.18s ease;
  z-index: 2;
}
.carousel-arrow:hover { background: var(--amber); border-color: var(--amber); color: #fff; box-shadow: var(--shadow-card); }
.carousel-arrow svg { width: 18px; height: 18px; }
.carousel-arrow-left { left: -14px; }
.carousel-arrow-right { right: -14px; }
@media (max-width: 768px) {
  .carousel-slide { flex: 0 0 85%; max-width: 85%; }
  .carousel-arrow-left { left: 4px; }
  .carousel-arrow-right { right: 4px; }
}

/* ===== Table ===== */
.spec-table { border-radius: var(--radius-card); overflow: hidden; border: 1px solid var(--line); background: var(--white); }
.spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  min-height: 56px;
  align-items: center;
  padding: 0 24px;
  border-left: 4px solid var(--ink);
  transition: background 0.18s ease;
}
.spec-row:nth-child(odd) { background: var(--white); }
.spec-row:nth-child(even) { background: var(--paper); }
.spec-row:hover { background: var(--sand); }
.spec-label { font-weight: 600; color: var(--primary); font-size: 15px; }
.spec-value { color: var(--secondary); font-size: 14px; }
@media (max-width: 768px) {
  .spec-row { grid-template-columns: 1fr; padding: 14px 18px; gap: 4px; }
  .spec-label { font-size: 14px; }
  .spec-value { font-size: 13px; }
}

/* ===== Reviews ===== */
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card { background: var(--white); border-radius: var(--radius-card); padding: 32px 28px; position: relative; transition: all 0.2s ease; }
.review-card:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(0,0,0,0.15); }
.review-card.middle { transform: scale(1.03); border-top: 6px solid var(--amber); }
.review-card.middle:hover { transform: scale(1.03) translateY(-2px); }
.review-stars { display: flex; gap: 3px; color: var(--amber); margin-bottom: 14px; }
.review-stars svg { width: 16px; height: 16px; fill: currentColor; }
.review-text { font-size: 14px; line-height: 1.75; color: var(--primary); margin-bottom: 18px; }
.review-author { font-size: 13px; color: var(--secondary); font-weight: 500; }
@media (max-width: 768px) {
  .review-grid { grid-template-columns: 1fr; }
  .review-card.middle { transform: scale(1); }
  .review-card.middle:hover { transform: translateY(-2px); }
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--amber);
  border-radius: var(--radius-card);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -20px;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.cta-title { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 18px; position: relative; z-index: 1; }
.cta-sub { color: rgba(255,255,255,0.85); font-size: 14px; margin-bottom: 28px; position: relative; z-index: 1; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
.btn-white {
  background: var(--white);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-button);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.18s ease;
}
.btn-white svg { width: 18px; height: 18px; }
.btn-white:hover { transform: translateY(-1px); box-shadow: 0 12px 32px rgba(0,0,0,0.15); background: var(--sand); }
.btn-white:active { transform: translateY(0); }
.btn-outline-white {
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-button);
  border: 1px solid rgba(255,255,255,0.7);
  transition: all 0.18s ease;
}
.btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.cta-note { color: rgba(255,255,255,0.8); font-size: 13px; margin-top: 16px; position: relative; z-index: 1; }
@media (max-width: 768px) {
  .cta-banner { padding: 48px 24px; }
  .cta-title { font-size: 22px; }
  .cta-actions { flex-direction: column; }
  .btn-white, .btn-outline-white { width: 100%; justify-content: center; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); transition: all 0.18s ease; }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item.open { border-left: 3px solid var(--amber); padding-left: 16px; }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: all 0.18s ease;
}
.faq-question:hover { color: var(--amber); }
.faq-icon { width: 20px; height: 20px; flex-shrink: 0; transition: transform 0.3s ease; color: var(--secondary); }
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--amber); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 8px;
}
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 20px; }
.faq-answer p { font-size: 14px; color: var(--secondary); line-height: 1.75; }

/* ===== News List ===== */
.news-list { max-width: 880px; margin: 0 auto; }
.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px;
  border-bottom: 1px solid var(--line);
  border-radius: 12px;
  transition: all 0.18s ease;
}
.news-item:hover { background: #FAF7F2; }
.news-date {
  width: 72px;
  flex-shrink: 0;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 0;
  transition: all 0.18s ease;
}
.news-item:hover .news-date { border-color: var(--amber); }
.news-month { display: block; font-size: 16px; font-weight: 600; color: var(--amber); line-height: 1.2; }
.news-day { display: block; font-size: 24px; font-weight: 700; color: var(--ink); line-height: 1.2; margin-top: 2px; }
.news-body { flex: 1; min-width: 0; }
.news-title { font-size: 16px; font-weight: 600; color: var(--primary); line-height: 1.4; margin-bottom: 6px; display: block; }
.news-item:hover .news-title { color: var(--amber); }
.news-excerpt {
  font-size: 14px;
  color: var(--secondary);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  margin-bottom: 8px;
}
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--secondary); }
.news-tag {
  display: inline-block;
  background: var(--sand);
  color: var(--amber);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
}
.news-empty {
  text-align: center;
  padding: 48px 20px;
  border: 2px dashed var(--line);
  border-radius: var(--radius-card);
  color: var(--secondary);
  font-size: 15px;
}
.news-empty-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px dashed var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--secondary);
}
.news-empty-icon svg { width: 24px; height: 24px; }
@media (max-width: 768px) {
  .news-item { gap: 14px; padding: 16px 12px; }
  .news-date { width: 56px; padding: 8px 0; }
  .news-day { font-size: 18px; }
  .news-month { font-size: 13px; }
}

/* ===== Footer ===== */
.site-footer { background: var(--ink); color: rgba(255,255,255,0.75); padding: 64px 0 0; }
.footer-subscribe {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 48px;
}
.footer-subscribe-title { font-size: 17px; font-weight: 600; color: #fff; }
.footer-subscribe-form { display: flex; gap: 10px; flex: 1; max-width: 420px; min-width: 260px; }
.footer-subscribe-form input {
  flex: 1;
  background: var(--white);
  border: none;
  border-radius: var(--radius-button);
  padding: 11px 16px;
  font-size: 14px;
  color: var(--primary);
  outline: none;
  transition: all 0.18s ease;
}
.footer-subscribe-form input:focus { box-shadow: 0 0 0 3px rgba(200,117,51,0.4); }
.footer-subscribe-form button {
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: var(--radius-button);
  padding: 11px 24px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.footer-subscribe-form button:hover { background: var(--amber-light); }
.footer-grid { display: grid; grid-template-columns: 4fr 2fr 3fr; gap: 48px; margin-bottom: 40px; }
.footer-brand .logo-text { color: #fff; font-size: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 14px; color: rgba(255,255,255,0.6); max-width: 300px; }
.footer-col h3 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.6); transition: all 0.18s ease; }
.footer-col ul li a:hover { color: var(--amber-light); padding-left: 4px; }
.footer-contact { font-size: 14px; line-height: 2; color: rgba(255,255,255,0.6); }
.footer-contact a { color: rgba(255,255,255,0.6); }
.footer-contact a:hover { color: var(--amber-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.45); font-size: 13px; }
.footer-bottom-links a:hover { color: var(--amber-light); }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .site-footer { padding: 48px 0 0; }
  .footer-subscribe { flex-direction: column; align-items: flex-start; }
  .footer-subscribe-form { max-width: 100%; width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
            --ink: #1B1B22;
            --ink-soft: #2C2C36;
            --amber: #C87533;
            --amber-light: #E8A36B;
            --paper: #F6F3EE;
            --white: #FFFFFF;
            --primary: #232020;
            --secondary: #6B6459;
            --line: #E5DFD6;
            --sand: #EFEAE2;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 8px rgba(27, 27, 34, 0.06);
            --shadow-float: 0 12px 32px rgba(27, 27, 34, 0.10);
            --transition-base: all 0.18s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--primary);
            background-color: var(--paper);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            body {
                padding-bottom: 64px;
            }
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

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

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--ink);
            padding-left: 20px;
            position: relative;
            margin-bottom: 16px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 4px;
            height: 24px;
            background-color: var(--amber);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--secondary);
            line-height: 1.6;
            margin-bottom: 40px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--amber);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition-base);
            border: none;
        }

        .btn-primary:hover {
            background-color: var(--amber-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-float);
        }

        .btn-primary:active {
            background-color: #A85F28;
            transform: translateY(0);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: transparent;
            color: var(--ink);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            border: 1px solid var(--ink);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-outline:hover {
            border-color: var(--amber);
            color: var(--amber);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: #fff;
            color: var(--ink);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-white:hover {
            background-color: var(--sand);
            transform: translateY(-1px);
            box-shadow: var(--shadow-float);
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--line);
            height: 68px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

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

        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--ink);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            letter-spacing: 0.5px;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            border-radius: 8px;
            transition: var(--transition-base);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--amber);
            background-color: rgba(200, 117, 51, 0.06);
        }

        .main-nav a.active {
            color: var(--amber);
            font-weight: 600;
            background-color: rgba(200, 117, 51, 0.08);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--amber);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 8px;
            transition: var(--transition-base);
            margin-left: 8px;
        }

        .nav-cta:hover {
            background-color: var(--amber-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
        }

        .hamburger span {
            width: 22px;
            height: 2px;
            background-color: var(--ink);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background-color: #fff;
            border-bottom: 1px solid var(--line);
            padding: 12px 16px;
            box-shadow: var(--shadow-float);
            z-index: 99;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            padding: 12px 16px;
            font-size: 15px;
            color: var(--primary);
            border-radius: 8px;
            transition: var(--transition-base);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background-color: rgba(200, 117, 51, 0.08);
            color: var(--amber);
        }

        /* Mobile Bottom Tab */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background-color: #fff;
            border-top: 1px solid var(--line);
            z-index: 100;
            box-shadow: 0 -2px 10px rgba(27, 27, 34, 0.04);
        }

        .tabbar-inner {
            display: flex;
            height: 64px;
            align-items: center;
            justify-content: space-around;
        }

        .tabbar-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            font-size: 11px;
            color: var(--secondary);
            padding: 6px 12px;
            border-radius: 10px;
            transition: var(--transition-base);
        }

        .tabbar-item svg {
            width: 20px;
            height: 20px;
        }

        .tabbar-item.active {
            color: var(--amber);
        }

        /* Hero */
        .category-hero {
            background: linear-gradient(180deg, var(--sand) 0%, var(--paper) 100%);
            padding-top: 64px;
            padding-bottom: 72px;
            border-bottom: 1px solid var(--line);
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 6fr 6fr;
            gap: 56px;
            align-items: center;
        }

        .hero-copy h1 {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

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

        .hero-tagline {
            font-size: 18px;
            color: var(--secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--primary);
        }

        .hero-badge svg {
            width: 14px;
            height: 14px;
            color: var(--amber);
        }

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

        .hero-visual {
            position: relative;
        }

        .hero-visual img {
            border-radius: 16px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-float);
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .hero-brand-stamp {
            position: absolute;
            top: 18px;
            right: 18px;
            width: 80px;
            height: 80px;
            background-color: var(--amber);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            transform: rotate(-6deg);
            box-shadow: 0 6px 20px rgba(200, 117, 51, 0.3);
        }

        /* Cards */
        .card {
            background-color: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

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

        .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            color: var(--amber);
            margin-bottom: 16px;
        }

        .card-icon svg {
            width: 40px;
            height: 40px;
        }

        .card h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .card p {
            font-size: 15px;
            color: var(--secondary);
            line-height: 1.8;
        }

        /* Features 1+2 layout */
        .features-grid {
            display: grid;
            grid-template-columns: 6fr 6fr;
            gap: 24px;
        }

        .feature-main {
            grid-column: span 6;
        }

        .feature-side {
            grid-column: span 6;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-main,
            .feature-side {
                grid-column: span 1;
            }
        }

        /* Process */
        .process-section {
            background-color: var(--sand);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .process-step {
            text-align: center;
            padding: 32px 20px;
            background-color: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: var(--transition-base);
        }

        .process-step:hover {
            box-shadow: var(--shadow-float);
            transform: translateY(-2px);
        }

        .process-step .step-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--amber);
            background-color: rgba(200, 117, 51, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            margin-bottom: 16px;
        }

        .process-step .step-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            color: var(--amber);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--secondary);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Security dark section */
        .security-section {
            background-color: var(--ink);
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .security-section .section-title {
            color: #fff;
        }

        .security-inner {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 56px;
            align-items: center;
        }

        .security-copy p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            line-height: 1.9;
        }

        .security-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .security-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
        }

        .security-list li svg {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            color: var(--amber-light);
            margin-top: 4px;
        }

        .security-stats {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }

        .security-stat {
            background-color: var(--ink-soft);
            border-radius: 14px;
            padding: 28px 20px;
            text-align: center;
        }

        .security-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--amber-light);
            font-family: "Inter", system-ui, sans-serif;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .security-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .security-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .security-stats {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            margin-top: 40px;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
            transition: var(--transition-base);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--line);
        }

        .faq-item.open {
            border-left: 3px solid var(--amber);
            padding-left: 16px;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 4px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: var(--transition-base);
            background: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--line);
            color: var(--secondary);
            transition: var(--transition-base);
            font-style: normal;
        }

        .faq-item.open .faq-icon {
            background-color: var(--amber);
            border-color: var(--amber);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding-left: 4px;
            padding-right: 4px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--secondary);
            line-height: 1.8;
            padding-bottom: 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* CTA */
        .cta-section {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .cta-banner {
            background-color: var(--amber);
            border-radius: 16px;
            padding: 48px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-banner .cta-note {
            color: rgba(255, 255, 255, 0.8);
            font-size: 13px;
            margin-bottom: 24px;
        }

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

        /* Footer */
        .site-footer {
            background-color: var(--ink);
            padding-top: 64px;
            padding-bottom: 32px;
        }

        .footer-subscribe {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .footer-subscribe-title {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 10px;
        }

        .footer-subscribe-form input {
            background-color: #fff;
            border-radius: 8px;
            padding: 10px 16px;
            font-size: 14px;
            width: 260px;
            color: var(--primary);
        }

        .footer-subscribe-form button {
            background-color: var(--amber);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background-color: var(--amber-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 4fr 3fr 4fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            max-width: 280px;
        }

        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--amber-light);
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        .footer-bottom-links a:hover {
            color: var(--amber-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-subscribe {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-subscribe-form {
                width: 100%;
            }
            .footer-subscribe-form input {
                flex: 1;
                width: auto;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-tabbar {
                display: block;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-copy h1 {
                font-size: 30px;
            }
            .hero-tagline {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-white,
            .cta-actions .btn-outline {
                width: 100%;
            }
            .hero-brand-stamp {
                width: 56px;
                height: 56px;
                font-size: 14px;
                border-radius: 12px;
            }
        }

        @media (min-width: 769px) {
            .mobile-tabbar {
                display: none !important;
            }
            .hamburger {
                display: none !important;
            }
            .mobile-nav {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .hero-copy h1 {
                font-size: 26px;
            }
            .card {
                padding: 20px;
            }
            .security-stats {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
  --ink: #1B1B22;
  --ink-soft: #2C2C36;
  --amber: #C87533;
  --amber-light: #E8A36B;
  --amber-dark: #A85F28;
  --paper: #F6F3EE;
  --white: #FFFFFF;
  --primary: #232020;
  --secondary: #6B6459;
  --line: #E5DFD6;
  --sand: #EFEAE2;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-card: 0 2px 8px rgba(27, 27, 34, 0.06);
  --shadow-hover: 0 12px 32px rgba(27, 27, 34, 0.10);
  --shadow-floating: 0 16px 40px rgba(27, 27, 34, 0.14);
  --container: 1200px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
a { text-decoration: none; color: inherit; transition: color .2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; }

/* ── Header / Nav ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  height: 68px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-badge {
  width: 38px;
  height: 38px;
  background: var(--ink);
  color: #fff;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .3px;
  transition: transform .2s ease;
}
.logo:hover .logo-badge { transform: rotate(-4deg) scale(1.04); }
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--secondary);
  font-weight: 500;
  transition: all .2s ease;
}
.main-nav a:hover {
  color: var(--ink);
  background: var(--sand);
}
.main-nav a.active {
  color: var(--ink);
  background: var(--sand);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta {
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s ease;
}
.nav-toggle:hover { background: var(--sand); border-color: var(--amber); }
.nav-toggle svg { width: 22px; height: 22px; }
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  z-index: 99;
  box-shadow: var(--shadow-hover);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: block;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
  transition: all .2s ease;
}
.mobile-menu a:hover { background: var(--sand); }
.mobile-menu a.active { background: var(--sand); font-weight: 600; color: var(--amber); }
.mobile-menu .btn { margin-top: 8px; justify-content: center; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .2s ease;
  line-height: 1.2;
}
.btn-primary {
  background: var(--amber);
  color: #fff;
}
.btn-primary:hover {
  background: var(--amber-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}
.btn-primary:active { background: var(--amber-dark); }
.btn-outline {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--amber); color: var(--amber); }
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn-outline-light:hover { border-color: var(--amber-light); color: var(--amber-light); }
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}
.btn-block { width: 100%; }
.btn:focus-visible, .nav-toggle:focus-visible, .btn-outline-light:focus-visible {
  outline: 3px solid rgba(200, 117, 51, 0.35);
  outline-offset: 2px;
}

/* ── Breadcrumb ── */
.breadcrumb {
  padding: 24px 0 8px;
  font-size: 13px;
  color: var(--secondary);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--secondary); transition: color .2s ease; }
.breadcrumb a:hover { color: var(--amber); }
.breadcrumb .sep { margin: 0 10px; opacity: .4; }
.breadcrumb .current { color: var(--ink); font-weight: 500; max-width: 320px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Article Layout ── */
.article-layout {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 40px;
  padding: 24px 0 72px;
}
.article-content-col { min-width: 0; }

/* Article header */
.article-header { margin-bottom: 28px; }
.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-size: 14px;
  color: var(--secondary);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item svg { width: 16px; height: 16px; color: var(--amber); }
.article-category-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 12px;
  background: var(--sand);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  transition: all .2s ease;
}
.article-category-tag:hover { background: var(--amber); color: #fff; }

/* Article body card */
.article-body-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 40px;
  box-shadow: var(--shadow-card);
}
.article-body {
  font-size: 16px;
  line-height: 1.9;
}
.article-body p { margin-bottom: 28px; }
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--amber);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}
.article-body ul,
.article-body ol {
  margin: 0 0 28px;
  padding-left: 24px;
}
.article-body li { margin-bottom: 8px; }
.article-body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 20px 0;
  box-shadow: var(--shadow-card);
}
.article-body a {
  color: var(--amber);
  border-bottom: 1px solid var(--amber);
}
.article-body a:hover { color: var(--amber-dark); border-color: var(--amber-dark); }
.article-body blockquote {
  border-left: 3px solid var(--amber);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--sand);
  border-radius: 0 10px 10px 0;
  color: var(--secondary);
  font-style: italic;
}
.article-body code {
  background: var(--ink-soft);
  color: #fff;
  padding: 2px 8px;
  border-radius: 5px;
  font-size: 14px;
}

/* Article not found */
.article-not-found {
  text-align: center;
  padding: 60px 20px;
}
.article-not-found-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  border: 2px dashed var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
}
.article-not-found-icon svg { width: 32px; height: 32px; }
.article-not-found p {
  font-size: 18px;
  color: var(--secondary);
  margin-bottom: 28px;
}

/* Article footer nav */
.article-footer-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.article-prev {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--secondary);
  transition: all .2s ease;
  padding: 10px 16px;
  border-radius: 8px;
}
.article-prev:hover { color: var(--amber); transform: translateX(-4px); background: var(--sand); }
.article-prev svg { width: 18px; height: 18px; }
.article-next {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--amber);
  color: var(--amber);
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: all .2s ease;
  white-space: nowrap;
}
.article-next:hover {
  background: var(--amber);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}
.article-next svg { width: 18px; height: 18px; }

/* ── Sidebar ── */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}
.sidebar-search {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 16px;
  box-shadow: var(--shadow-card);
}
.sidebar-search form { display: flex; gap: 8px; }
.sidebar-search input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  background: var(--paper);
  outline: none;
  transition: all .2s ease;
}
.sidebar-search input:focus { border-color: var(--amber); background: #fff; box-shadow: 0 0 0 3px rgba(200, 117, 51, 0.12); }
.sidebar-search button {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s ease;
}
.sidebar-search button:hover { background: var(--amber-light); }
.sidebar-search button:focus-visible { outline: 3px solid rgba(200, 117, 51, 0.3); }
.sidebar-search button svg { width: 18px; height: 18px; }
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 24px;
  box-shadow: var(--shadow-card);
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.sidebar-card h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 28px;
  height: 3px;
  background: var(--amber);
  border-radius: 2px;
}
.recommend-list { list-style: none; }
.recommend-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.recommend-list li:first-child { padding-top: 0; }
.recommend-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.recommend-list a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.recommend-list img {
  width: 72px;
  height: 48px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
  background: var(--sand);
}
.recommend-list h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 4px;
  transition: color .2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recommend-list a:hover h4 { color: var(--amber); }
.recommend-list .rec-date {
  font-size: 13px;
  color: var(--secondary);
}

/* ── CTA Section ── */
.article-cta {
  position: relative;
  margin: 0 0 80px;
  background: var(--ink);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  overflow: hidden;
}
.article-cta .cta-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  pointer-events: none;
}
.article-cta .cta-content { position: relative; z-index: 1; }
.article-cta h3 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}
.article-cta p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  margin-bottom: 24px;
}
.article-cta .cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.article-cta .btn-primary {
  background: var(--amber);
  color: #fff;
  border: none;
}
.article-cta .btn-primary:hover { background: var(--amber-light); }

/* ── Footer ── */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}
.footer-subscribe {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-subscribe-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
.footer-subscribe-form {
  display: flex;
  gap: 8px;
}
.footer-subscribe-form input {
  padding: 11px 16px;
  border-radius: 8px;
  border: none;
  background: #fff;
  width: 280px;
  font-size: 14px;
  outline: none;
  transition: box-shadow .2s ease;
}
.footer-subscribe-form input:focus { box-shadow: 0 0 0 3px rgba(200, 117, 51, 0.4); }
.footer-subscribe-form button {
  padding: 11px 26px;
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all .2s ease;
}
.footer-subscribe-form button:hover { background: var(--amber-light); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 40px;
  padding: 44px 0 40px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-col h3 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  transition: color .2s ease;
}
.footer-col ul a:hover { color: var(--amber-light); }
.footer-contact {
  font-size: 14px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: rgba(255, 255, 255, 0.4); font-size: 13px; }
.footer-bottom-links a:hover { color: #fff; }

/* ── Mobile Tabbar ── */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  z-index: 200;
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-tabbar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 500;
  color: var(--secondary);
  transition: color .2s ease;
}
.mobile-tabbar a:hover { color: var(--ink); }
.mobile-tabbar a.active { color: var(--amber); font-weight: 600; }
.mobile-tabbar svg { width: 20px; height: 20px; }

/* ── Responsive ── */
@media (max-width: 1023px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 767px) {
  body { padding-bottom: 64px; }
  .container { padding: 0 16px; }
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-tabbar { display: flex; }
  .article-layout { padding: 16px 0 48px; }
  .article-title { font-size: 26px; }
  .article-meta { gap: 10px 16px; }
  .article-body-card { padding: 24px; }
  .article-body { font-size: 15px; line-height: 1.85; }
  .article-body h2 { font-size: 21px; }
  .article-body h3 { font-size: 18px; }
  .article-footer-nav { flex-direction: column; align-items: stretch; }
  .article-prev { justify-content: flex-start; }
  .article-next { justify-content: center; width: 100%; }
  .article-cta { padding: 40px 20px; margin-bottom: 48px; }
  .article-cta h3 { font-size: 22px; }
  .article-cta .btn { width: 100%; }
  .cta-actions { flex-direction: column; }
  .footer-subscribe {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .footer-subscribe-form { flex-direction: column; }
  .footer-subscribe-form input { width: 100%; }
  .footer-subscribe-form button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-bottom-links { justify-content: center; }
  .breadcrumb { padding-top: 16px; }
  .breadcrumb .current { max-width: 180px; }
}
@media (max-width: 520px) {
  .logo-text { font-size: 16px; }
  .header-cta { display: none; }
  .article-meta { flex-direction: column; gap: 8px; }
  .breadcrumb { font-size: 12px; }
  .breadcrumb .sep { margin: 0 6px; }
}