/* roulang page: index */
:root {
  --brand-primary: #2B1D3A;
  --brand-primary-light: #412B56;
  --brand-gold: #D8A84E;
  --brand-gold-light: #F0CE7D;
  --bg-page: #F6F2EC;
  --bg-card: #FFFFFF;
  --bg-deep: #171020;
  --text-main: #211A2A;
  --text-secondary: #5D5368;
  --text-muted: #8A7E99;
  --border-soft: #E6DED3;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 20px rgba(43, 29, 58, 0.08);
  --shadow-hover: 0 16px 36px rgba(43, 29, 58, 0.14);
  --gradient-hero: radial-gradient(1200px 600px at 75% 20%, #593a78 0%, transparent 60%), linear-gradient(135deg, #171020 0%, #2B1D3A 60%, #412B56 100%);
  --gradient-gold: linear-gradient(135deg, #F0CE7D 0%, #D8A84E 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color .2s ease; }
a:hover { color: var(--brand-gold); }
img { max-width: 100%; }
input, button { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { color: var(--text-main); font-weight: 700; margin: 0 0 .75rem 0; }
p { margin: 0 0 1rem 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Site Nav ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  padding: 18px 0;
  background: transparent;
  transition: all .3s ease;
}
.site-nav .nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}
.brand { display: flex; flex-direction: column; line-height: 1.2; }
.brand-main { color: #fff; font-size: 1.25rem; font-weight: 800; letter-spacing: .01em; transition: color .3s; }
.brand-sub { color: rgba(255,255,255,.65); font-size: .72rem; letter-spacing: .12em; margin-top: 2px; transition: color .3s; }
.site-nav.scrolled {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 8px 28px rgba(43,29,58,.08);
  padding: 12px 0;
}
.site-nav.scrolled .brand-main { color: var(--text-main); }
.site-nav.scrolled .brand-sub { color: var(--text-secondary); }
.site-nav.scrolled .nav-links > li > a:not(.btn-nav-cta) { color: var(--text-main); }
.site-nav.scrolled .nav-links > li > a:not(.btn-nav-cta):hover { color: var(--brand-gold); }
.nav-links { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 6px; }
.nav-links > li { margin: 0; }
.nav-links > li > a {
  color: rgba(255,255,255,.92);
  font-size: .92rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  display: inline-block;
  transition: background .2s ease, color .2s ease;
}
.nav-links > li > a:not(.btn-nav-cta):hover { background: rgba(255,255,255,.12); color: #fff; }
.nav-links > li > a.active { color: var(--brand-gold-light); background: rgba(255,255,255,.1); }
.site-nav.scrolled .nav-links > li > a.active { color: var(--brand-gold); background: rgba(216,168,78,.12); }
.btn-nav-cta {
  background: var(--gradient-gold);
  color: #211A2A !important;
  font-weight: 700;
  padding: 9px 22px !important;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(216,168,78,.32);
  transition: transform .2s ease, box-shadow .2s ease !important;
}
.btn-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(216,168,78,.42); color: #211A2A !important; }
.nav-toggler { display: none; background: transparent; border: 1px solid rgba(255,255,255,.4); color: #fff; width: 44px; height: 44px; border-radius: 12px; font-size: 1.1rem; cursor: pointer; }
.site-nav.scrolled .nav-toggler { color: var(--text-main); border-color: var(--border-soft); }
@media (max-width: 991.98px) {
  .nav-toggler { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links { position: absolute; top: 60px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 18px; border-radius: 20px; box-shadow: var(--shadow-hover); gap: 4px; display: none; }
  .nav-links.open { display: flex; }
  .nav-links > li > a { color: var(--text-main) !important; }
  .nav-links > li > a.active { background: rgba(216,168,78,.14); color: var(--brand-gold) !important; }
  .btn-nav-cta { text-align: center; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--gradient-hero);
  padding: 150px 0 95px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .2;
  mix-blend-mode: luminosity;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(23,16,32,.35) 0%, rgba(43,29,58,.1) 50%, rgba(23,16,32,.5) 100%);
  pointer-events: none;
}
.hero-wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 60px; align-items: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(216,168,78,.16); border: 1px solid rgba(216,168,78,.35); color: var(--brand-gold-light); padding: 7px 18px; border-radius: 999px; font-size: .8rem; letter-spacing: .05em; margin-bottom: 20px; }
.hero h1 { color: #fff; font-size: clamp(2.2rem, 5vw, 3.25rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.18; margin-bottom: 18px; }
.hero-lead { color: rgba(255,255,255,.82); font-size: 1.1rem; max-width: 520px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; font-weight: 600; transition: all .2s ease; }
.btn-gold { background: var(--gradient-gold); color: #211A2A; border: none; height: 48px; padding: 0 30px; font-weight: 700; box-shadow: 0 6px 18px rgba(216,168,78,.32); }
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(216,168,78,.45); color: #211A2A; }
.btn-outline-light { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.35); height: 48px; padding: 0 30px; }
.btn-outline-light:hover { background: rgba(255,255,255,.14); border-color: var(--brand-gold-light); color: var(--brand-gold-light); transform: translateY(-2px); }
.hero-stats { display: flex; gap: 12px; flex-wrap: wrap; }
.stat-badge {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(216,168,78,.28);
  border-radius: 999px;
  padding: 10px 18px;
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
  backdrop-filter: blur(4px);
}
.stat-badge strong { color: var(--brand-gold-light); font-size: 1.3rem; font-weight: 800; }
.stat-badge span { color: rgba(255,255,255,.72); font-size: .74rem; }
/* login card */
.login-card {
  background: #fff;
  border-radius: 26px;
  box-shadow: 0 24px 60px rgba(0,0,0,.3);
  overflow: hidden;
  max-width: 440px;
  margin-left: auto;
  position: relative;
}
.login-tag {
  background: var(--gradient-gold);
  color: #211A2A;
  font-weight: 700;
  font-size: .85rem;
  text-align: center;
  padding: 10px 20px;
  letter-spacing: .04em;
}
.login-body { padding: 32px 28px 18px; }
.login-body .form-label { font-size: .82rem; color: var(--text-secondary); font-weight: 600; margin-bottom: 6px; }
.login-body .form-control {
  width: 100%;
  height: 48px;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  padding: 0 16px;
  font-size: .95rem;
  color: var(--text-main);
  background: #FAF7F3;
  transition: border-color .2s, box-shadow .2s;
  margin-bottom: 16px;
}
.login-body .form-control:focus { outline: none; border-color: var(--brand-gold); box-shadow: 0 0 0 4px rgba(216,168,78,.18); background: #fff; }
.code-row { display: flex; gap: 10px; }
.code-row .form-control { flex: 1; }
.code-btn { background: #F3EBDD; color: var(--brand-primary); border: 1px solid #E2D2B4; border-radius: 10px; font-size: .82rem; font-weight: 600; padding: 0 16px; white-space: nowrap; height: 48px; cursor: pointer; transition: all .2s; }
.code-btn:hover { background: var(--gradient-gold); border-color: transparent; color: #211A2A; }
.login-submit {
  width: 100%;
  height: 48px;
  border: none;
  border-radius: 999px;
  background: var(--gradient-gold);
  color: #211A2A;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  box-shadow: 0 6px 18px rgba(216,168,78,.32);
  margin-top: 4px;
}
.login-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(216,168,78,.44); }
.login-meta { display: flex; gap: 10px; padding: 12px 24px 24px; flex-wrap: wrap; }
.login-meta .stat-badge { background: #F8F4EE; border-color: #E6D7C0; padding: 8px 14px; flex-direction: row; align-items: baseline; gap: 6px; }
.login-meta .stat-badge strong { color: var(--brand-primary); font-size: 1rem; }
.login-meta .stat-badge span { color: var(--text-secondary); font-size: .72rem; }
.hero-note { color: rgba(255,255,255,.6); font-size: .8rem; margin-top: 12px; text-align: center; }

/* ---------- Section base ---------- */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section-title { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 700; letter-spacing: -.01em; margin-bottom: .5rem; }
.section-sub { color: var(--text-secondary); font-size: 1rem; max-width: 620px; margin-bottom: 42px; }
.section-head { text-align: center; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head .section-title { margin-bottom: 12px; }
.section-head .section-sub { margin-left: auto; margin-right: auto; }

/* ---------- Benefits ---------- */
#benefits { background: var(--bg-page); }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.benefit-card { background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: 32px 26px; border: 1px solid var(--border-soft); position: relative; display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.benefit-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #E3C995; }
.benefit-card.recommend { border: 2px solid var(--brand-gold); box-shadow: 0 12px 32px rgba(216,168,78,.18); min-height: 420px; }
.recommend-flag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--gradient-gold); color: #211A2A; font-size: .76rem; font-weight: 700; padding: 6px 18px; border-radius: 999px; letter-spacing: .04em; box-shadow: 0 4px 10px rgba(216,168,78,.35); }
.benefit-tier { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; }
.benefit-tier h3 { font-size: 1.45rem; margin: 0; }
.benefit-price { color: var(--brand-primary); font-weight: 800; font-size: 1.1rem; }
.benefit-price small { font-size: .78rem; font-weight: 400; color: var(--text-muted); }
.benefit-desc { color: var(--text-secondary); font-size: .9rem; margin-bottom: 18px; }
.benefit-list { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.benefit-list li { display: flex; gap: 10px; padding: 7px 0; font-size: .9rem; color: var(--text-main); border-bottom: 1px dashed #F0EAE2; }
.benefit-list li:last-child { border-bottom: 0; }
.benefit-list .fa-check { color: #4E9E6A; font-size: .8rem; margin-top: 4px; }
.benefit-list .fa-xmark { color: #C4B8CC; font-size: .8rem; margin-top: 4px; }
.benefit-cta { margin-top: auto; }
.benefit-cta .btn { width: 100%; height: 42px; font-size: .88rem; }
@media (max-width: 991.98px) {
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-card.recommend { min-height: 0; }
}

/* ---------- Level Highlights ---------- */
#levels { background: linear-gradient(180deg, #F6F2EC 0%, #EFE7DC 100%); }
.level-grid { display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 26px; align-items: start; }
.level-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: 30px 28px; border: 1px solid var(--border-soft); transition: transform .2s ease, box-shadow .2s ease; }
.level-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.level-card.level-main { background: linear-gradient(135deg, #2B1D3A 0%, #412B56 100%); border: none; padding: 36px 30px; margin-top: -18px; box-shadow: 0 20px 40px rgba(43,29,58,.28); }
.level-card.level-main h3 { color: #fff; }
.level-card.level-main .level-desc { color: rgba(255,255,255,.78); }
.level-card.level-main .level-list li { color: rgba(255,255,255,.92); border-color: rgba(255,255,255,.12); }
.level-card.level-main .level-list .fa-check { color: var(--brand-gold-light); }
.level-tag { font-size: .78rem; color: var(--brand-gold); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.level-card.level-main .level-tag { color: var(--brand-gold-light); }
.level-card h3 { font-size: 1.45rem; margin: 8px 0 6px; }
.level-desc { color: var(--text-secondary); font-size: .9rem; margin-bottom: 18px; }
.level-list { list-style: none; padding: 0; margin: 0 0 22px; }
.level-list li { display: flex; gap: 10px; font-size: .88rem; padding: 5px 0; color: var(--text-main); }
.level-list .fa-check { color: #4E9E6A; font-size: .8rem; margin-top: 5px; }
.level-stats { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.level-stats .stat-badge { background: #F8F4EE; border-color: #E6D7C0; padding: 8px 14px; }
.level-stats .stat-badge strong { color: var(--brand-primary); font-size: 1rem; }
.level-stats .stat-badge span { color: var(--text-secondary); font-size: .72rem; }
.level-card.level-main .level-stats .stat-badge { background: rgba(255,255,255,.1); border-color: rgba(216,168,78,.3); }
.level-card.level-main .level-stats .stat-badge strong { color: var(--brand-gold-light); }
.level-card.level-main .level-stats .stat-badge span { color: rgba(255,255,255,.72); }
.level-entry { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; font-weight: 600; color: var(--brand-primary); }
.level-card.level-main .level-entry { color: var(--brand-gold-light); }
@media (max-width: 991.98px) {
  .level-grid { grid-template-columns: 1fr; }
  .level-card.level-main { margin-top: 0; }
}

/* ---------- Content preview ---------- */
#premium { background: var(--bg-page); }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--border-soft); transition: transform .2s ease, box-shadow .2s ease; display: flex; flex-direction: column; }
.content-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.card-thumb { position: relative; overflow: hidden; aspect-ratio: 16/9; background: #E9E2D8; }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.content-card:hover .card-thumb img { transform: scale(1.04); }
.card-thumb .card-tag { position: absolute; left: 14px; top: 14px; background: rgba(23,16,32,.72); color: var(--brand-gold-light); font-size: .74rem; padding: 5px 14px; border-radius: 999px; backdrop-filter: blur(4px); border: 1px solid rgba(216,168,78,.3); }
.card-body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 1.05rem; line-height: 1.5; margin-bottom: 10px; }
.card-body h3 a { color: var(--text-main); }
.card-body h3 a:hover { color: var(--brand-gold); }
.card-excerpt { color: var(--text-secondary); font-size: .86rem; line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 16px; }
.card-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; color: var(--text-muted); font-size: .78rem; border-top: 1px solid #F0EAE2; padding-top: 14px; }
.card-meta .read-more { color: var(--brand-primary); font-weight: 600; font-size: .8rem; }
.card-meta .read-more i { font-size: .7rem; transition: transform .2s; }
.card-meta .read-more:hover i { transform: translateX(3px); }
.empty-state { grid-column: 1 / -1; border: 2px dashed #D8C9B8; background: rgba(255,255,255,.6); border-radius: var(--radius-lg); padding: 70px 24px; text-align: center; color: var(--text-muted); }
.empty-state i { font-size: 2.4rem; margin-bottom: 12px; color: #CBB99F; }
.empty-state p { margin: 0; font-size: .95rem; }
@media (max-width: 991.98px) {
  .content-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767.98px) {
  .content-grid { grid-template-columns: 1fr; }
}

/* ---------- FAQ ---------- */
#faq { background: linear-gradient(180deg, #EFE7DC 0%, #F6F2EC 100%); }
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: var(--radius-md); box-shadow: 0 4px 14px rgba(43,29,58,.06); border: 1px solid var(--border-soft); margin-bottom: 14px; overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.faq-item:has(.accordion-button:not(.collapsed)) { border-color: var(--brand-gold); box-shadow: 0 6px 18px rgba(216,168,78,.14); }
.accordion-button { background: #fff !important; color: var(--text-main) !important; font-weight: 600; font-size: .98rem; padding: 20px 24px; box-shadow: none !important; border-radius: var(--radius-md) !important; transition: color .2s; }
.accordion-button:not(.collapsed) { color: var(--brand-gold) !important; }
.accordion-button::after { background-image: none; content: "\f107"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--text-secondary); transform: rotate(-90deg); transition: transform .25s ease; }
.accordion-button:not(.collapsed)::after { transform: rotate(0deg); color: var(--brand-gold); }
.accordion-body { padding: 4px 24px 22px; color: var(--text-secondary); font-size: .9rem; }

/* ---------- CTA ---------- */
#cta { background: var(--bg-page); }
.cta-card {
  background: linear-gradient(135deg, #171020 0%, #2B1D3A 55%, #412B56 100%);
  border-radius: 26px;
  padding: clamp(2rem, 5vw, 3.5rem);
  box-shadow: 0 24px 60px rgba(23,16,32,.3);
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 50px;
  align-items: center;
}
.cta-card::before { content: ""; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: .12; mix-blend-mode: luminosity; }
.cta-inner { position: relative; z-index: 2; }
.cta-inner h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,.78); font-size: .96rem; margin-bottom: 22px; }
.cta-points { list-style: none; padding: 0; margin: 0 0 26px; }
.cta-points li { display: flex; gap: 10px; color: rgba(255,255,255,.9); font-size: .9rem; padding: 4px 0; }
.cta-points li i { color: var(--brand-gold-light); font-size: .82rem; margin-top: 4px; }
.cta-stats { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-stats .stat-badge { background: rgba(255,255,255,.08); border-color: rgba(216,168,78,.3); }
.cta-stats .stat-badge strong { color: var(--brand-gold-light); }
.cta-stats .stat-badge span { color: rgba(255,255,255,.72); }
.cta-form { background: #fff; border-radius: 20px; padding: 28px; box-shadow: 0 12px 36px rgba(0,0,0,.25); position: relative; z-index: 2; }
.cta-form .form-label { font-size: .82rem; color: var(--text-secondary); font-weight: 600; margin-bottom: 6px; }
.cta-form .form-control { width: 100%; height: 48px; border-radius: 10px; border: 1px solid var(--border-soft); padding: 0 16px; font-size: .92rem; background: #FAF7F3; transition: border-color .2s, box-shadow .2s; margin-bottom: 14px; }
.cta-form .form-control:focus { outline: none; border-color: var(--brand-gold); box-shadow: 0 0 0 4px rgba(216,168,78,.18); background: #fff; }
.cta-form .code-row { display: flex; gap: 10px; }
.cta-form .code-row .form-control { flex: 1; }
.cta-submit { width: 100%; height: 48px; border: none; border-radius: 999px; background: var(--gradient-gold); color: #211A2A; font-weight: 700; font-size: .95rem; cursor: pointer; transition: transform .2s, box-shadow .2s; box-shadow: 0 6px 18px rgba(216,168,78,.32); margin-top: 4px; }
.cta-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(216,168,78,.44); }
.cta-agree { font-size: .74rem; color: var(--text-muted); margin-top: 12px; text-align: center; }
@media (max-width: 991.98px) {
  .cta-card { grid-template-columns: 1fr; gap: 32px; }
  .hero-wrap { grid-template-columns: 1fr; }
  .login-card { margin-left: 0; max-width: 100%; }
  .hero { padding: 130px 0 70px; }
}

/* ---------- Footer ---------- */
.site-footer { background: #171020; padding: 50px 0 28px; border-top: 2px solid rgba(216,168,78,.18); }
.footer-brand { font-size: 1.15rem; font-weight: 800; color: #fff; margin-bottom: 6px; }
.footer-desc { color: rgba(255,255,255,.66); font-size: .84rem; max-width: 360px; margin-bottom: 22px; }
.footer-links { display: flex; gap: 12px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0 0 28px; }
.footer-links a { color: rgba(255,255,255,.72); font-size: .86rem; padding: 6px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.12); display: inline-flex; gap: 6px; align-items: center; transition: all .2s; }
.footer-links a:hover { color: #211A2A; background: var(--gradient-gold); border-color: transparent; }
.footer-divider { border-top: 1px solid rgba(255,255,255,.1); margin: 24px 0 18px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-copy { color: rgba(255,255,255,.5); font-size: .8rem; }
.footer-domain { color: rgba(255,255,255,.34); font-size: .76rem; letter-spacing: .04em; }

/* ---------- Misc ---------- */
.btn:focus, .form-control:focus, .accordion-button:focus { outline: none; box-shadow: none; }
::selection { background: rgba(216,168,78,.3); }

@media (max-width: 575.98px) {
  .brand-main { font-size: 1.1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-sub { font-size: .9rem; }
  .benefit-card { padding: 24px 20px; }
  .login-body { padding: 24px 20px 14px; }
  .login-meta { padding: 10px 18px 18px; }
  .cta-form { padding: 20px; }
  .cta-card { border-radius: 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
      --brand-primary: #2B1D3A;
      --brand-primary-light: #412B56;
      --brand-gold: #D8A84E;
      --brand-gold-light: #F0CE7D;
      --bg-page: #F6F2EC;
      --bg-card: #FFFFFF;
      --bg-deep: #171020;
      --text-main: #211A2A;
      --text-secondary: #5D5368;
      --text-muted: #8A7E99;
      --border-soft: #E6DED3;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 8px;
      --shadow-card: 0 6px 20px rgba(43, 29, 58, 0.08);
      --shadow-hover: 0 16px 36px rgba(43, 29, 58, 0.14);
      --gradient-hero: radial-gradient(1000px 500px at 80% 10%, #593a78 0%, transparent 60%), linear-gradient(135deg, #171020 0%, #2B1D3A 60%, #412B56 100%);
      --gradient-gold: linear-gradient(135deg, #F0CE7D 0%, #D8A84E 100%);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      max-width: 1200px;
    }

    section {
      padding: clamp(3.5rem, 7vw, 6rem) 0;
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      color: var(--brand-gold);
      background: rgba(216, 168, 78, 0.12);
      border: 1px solid rgba(216, 168, 78, 0.3);
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 16px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .section-sub {
      font-size: 1rem;
      color: var(--text-secondary);
      max-width: 680px;
      margin-bottom: 2.5rem;
    }

    /* 顶部导航 */
    .site-nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1080;
      background: rgba(23, 16, 32, 0.65);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      padding: 14px 0;
    }

    .site-nav.scrolled {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(18px);
      box-shadow: 0 4px 24px rgba(43, 29, 58, 0.1);
      border-color: rgba(43, 29, 58, 0.06);
      padding: 10px 0;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
      padding: 4px 0;
    }

    .brand-main {
      font-size: 1.15rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.01em;
      transition: color 0.3s ease;
    }

    .brand-sub {
      font-size: 0.72rem;
      color: rgba(255, 255, 255, 0.65);
      letter-spacing: 0.04em;
      transition: color 0.3s ease;
    }

    .site-nav.scrolled .brand-main {
      color: var(--text-main);
    }

    .site-nav.scrolled .brand-sub {
      color: var(--text-muted);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links li a:not(.btn-nav-cta) {
      display: block;
      padding: 10px 16px;
      font-size: 0.95rem;
      font-weight: 500;
      color: rgba(255, 255, 255, 0.85);
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .site-nav.scrolled .nav-links li a:not(.btn-nav-cta) {
      color: var(--text-secondary);
    }

    .nav-links li a:not(.btn-nav-cta):hover {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
    }

    .site-nav.scrolled .nav-links li a:not(.btn-nav-cta):hover {
      background: rgba(216, 168, 78, 0.12);
      color: var(--brand-primary);
    }

    .nav-links li a.active {
      color: var(--brand-gold) !important;
      font-weight: 700;
    }

    .site-nav.scrolled .nav-links li a.active {
      color: var(--brand-gold) !important;
    }

    .btn-nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--gradient-gold);
      color: #2B1D3A !important;
      font-weight: 700;
      font-size: 0.92rem;
      padding: 10px 22px !important;
      border-radius: 999px;
      box-shadow: 0 4px 14px rgba(216, 168, 78, 0.35);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(216, 168, 78, 0.45);
    }

    .nav-toggler {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.4rem;
      color: #fff;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.2s ease;
    }

    .site-nav.scrolled .nav-toggler {
      color: var(--text-main);
    }

    .nav-toggler:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    .site-nav.scrolled .nav-toggler:hover {
      background: rgba(43, 29, 58, 0.06);
    }

    /* 分类页 Hero */
    .page-hero {
      position: relative;
      min-height: 540px;
      display: flex;
      align-items: center;
      background: var(--gradient-hero), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
      padding: 160px 0 80px;
      color: #fff;
      overflow: hidden;
    }

    .page-hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 80px;
      background: linear-gradient(180deg, transparent, var(--bg-page));
    }

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

    .breadcrumb-capsule {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.16);
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 0.84rem;
      color: rgba(255, 255, 255, 0.8);
      margin-bottom: 28px;
      backdrop-filter: blur(6px);
    }

    .breadcrumb-capsule a {
      color: var(--brand-gold-light);
    }

    .breadcrumb-capsule i {
      font-size: 0.7rem;
      color: rgba(255, 255, 255, 0.4);
    }

    .page-hero h1 {
      font-size: clamp(2rem, 4.5vw, 3rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin-bottom: 18px;
      max-width: 760px;
    }

    .page-hero h1 span {
      color: var(--brand-gold-light);
    }

    .hero-sub {
      font-size: 1.06rem;
      color: rgba(255, 255, 255, 0.82);
      max-width: 640px;
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 42px;
    }

    .btn-gold {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--gradient-gold);
      color: #2B1D3A;
      font-weight: 700;
      font-size: 0.98rem;
      padding: 14px 30px;
      border-radius: 999px;
      border: none;
      box-shadow: 0 6px 20px rgba(216, 168, 78, 0.4);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      cursor: pointer;
    }

    .btn-gold:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 28px rgba(216, 168, 78, 0.5);
      color: #2B1D3A;
    }

    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: #fff;
      font-weight: 600;
      font-size: 0.98rem;
      padding: 14px 30px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.4);
      transition: all 0.2s ease;
    }

    .btn-outline-light:hover {
      border-color: var(--brand-gold-light);
      color: var(--brand-gold-light);
      transform: translateY(-3px);
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .stat-badge {
      display: flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(216, 168, 78, 0.3);
      border-radius: 999px;
      padding: 12px 22px;
      backdrop-filter: blur(6px);
    }

    .stat-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--brand-gold-light);
      line-height: 1;
    }

    .stat-label {
      font-size: 0.82rem;
      color: rgba(255, 255, 255, 0.8);
    }

    /* 通用板块 */
    .section-block {
      padding: clamp(3.5rem, 7vw, 5.5rem) 0;
    }

    .section-block.alt-bg {
      background: #fff;
    }

    /* 开通流程 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .process-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 32px 24px 28px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-soft);
      position: relative;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .process-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .process-num {
      position: absolute;
      top: 20px;
      right: 20px;
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(43, 29, 58, 0.08);
      line-height: 1;
    }

    .process-icon {
      width: 56px;
      height: 56px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(216, 168, 78, 0.16), rgba(216, 168, 78, 0.08));
      border: 1px solid rgba(216, 168, 78, 0.3);
      color: var(--brand-gold);
      font-size: 1.3rem;
      border-radius: var(--radius-md);
      margin-bottom: 18px;
    }

    .process-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .process-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin: 0;
      line-height: 1.7;
    }

    /* 服务卡片 */
    .service-card-wrap {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-soft);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .service-card-img {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

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

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

    .service-card-img .img-icon {
      position: absolute;
      bottom: 14px;
      left: 14px;
      width: 46px;
      height: 46px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--gradient-gold);
      color: #2B1D3A;
      font-size: 1.1rem;
      border-radius: 12px;
      box-shadow: 0 4px 14px rgba(216, 168, 78, 0.4);
    }

    .service-card-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .service-card-body h3 {
      font-size: 1.12rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .service-card-body p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-bottom: 16px;
      flex: 1;
    }

    .service-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--brand-primary);
    }

    .service-card-link i {
      font-size: 0.8rem;
      transition: transform 0.2s ease;
    }

    .service-card-link:hover {
      color: var(--brand-gold);
    }

    .service-card-link:hover i {
      transform: translateX(4px);
    }

    /* 权益对比 */
    .compare-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .compare-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 30px 26px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-soft);
      position: relative;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

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

    .compare-card.highlight {
      background: linear-gradient(160deg, #fff 0%, #FAF4EA 100%);
      border: 2px solid var(--brand-gold);
      transform: scale(1.04);
      z-index: 2;
    }

    .compare-card.highlight:hover {
      transform: scale(1.04) translateY(-4px);
    }

    .compare-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--gradient-gold);
      color: #2B1D3A;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 6px 18px;
      border-radius: 999px;
      white-space: nowrap;
      box-shadow: 0 4px 12px rgba(216, 168, 78, 0.4);
    }

    .compare-name {
      font-size: 1.1rem;
      font-weight: 700;
      text-align: center;
      margin-bottom: 4px;
    }

    .compare-price {
      text-align: center;
      font-size: 2rem;
      font-weight: 800;
      color: var(--brand-primary);
      margin-bottom: 6px;
    }

    .compare-price small {
      font-size: 0.85rem;
      font-weight: 400;
      color: var(--text-muted);
    }

    .compare-desc {
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin-bottom: 20px;
    }

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

    .compare-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 0;
      font-size: 0.9rem;
      color: var(--text-main);
      border-bottom: 1px dashed var(--border-soft);
    }

    .compare-list li:last-child {
      border-bottom: none;
    }

    .compare-list li i {
      width: 20px;
      text-align: center;
      font-size: 0.85rem;
    }

    .compare-list li .fa-check {
      color: var(--brand-gold);
    }

    .compare-list li .fa-xmark {
      color: #B0A7BB;
    }

    /* 数据面板 */
    .data-panel {
      position: relative;
      background: var(--bg-deep);
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      border-radius: 24px;
      padding: 50px 40px;
      overflow: hidden;
      color: #fff;
    }

    .data-panel::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(23, 16, 32, 0.96) 30%, rgba(65, 43, 86, 0.85) 100%);
    }

    .data-panel .container {
      position: relative;
      z-index: 2;
    }

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

    .data-item {
      text-align: center;
      padding: 20px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(216, 168, 78, 0.22);
    }

    .data-item .data-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--brand-gold-light);
      line-height: 1.2;
    }

    .data-item .data-label {
      font-size: 0.88rem;
      color: rgba(255, 255, 255, 0.7);
      margin-top: 8px;
    }

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

    .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-soft) !important;
      border-radius: var(--radius-md) !important;
      box-shadow: var(--shadow-card);
      margin-bottom: 16px;
      overflow: hidden;
      transition: box-shadow 0.2s ease;
    }

    .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: var(--brand-gold) !important;
      box-shadow: 0 10px 30px rgba(216, 168, 78, 0.14);
    }

    .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-size: 1rem;
      font-weight: 600;
      padding: 20px 24px;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      background: transparent;
      color: var(--brand-gold);
    }

    .accordion-button:focus {
      box-shadow: none;
    }

    .accordion-button::after {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23D8A84E'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
      transition: transform 0.3s ease;
    }

    .accordion-button:not(.collapsed)::after {
      transform: rotate(180deg);
    }

    .accordion-body {
      padding: 0 24px 22px;
      color: var(--text-secondary);
      font-size: 0.94rem;
      line-height: 1.8;
    }

    /* CTA 大卡 */
    .cta-panel {
      background: var(--gradient-hero);
      border-radius: 24px;
      padding: 50px;
      position: relative;
      overflow: hidden;
      color: #fff;
    }

    .cta-panel::after {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 260px;
      height: 260px;
      background: radial-gradient(circle, rgba(216, 168, 78, 0.25) 0%, transparent 70%);
    }

    .cta-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .cta-left h2 {
      font-size: clamp(1.6rem, 3vw, 2.2rem);
      font-weight: 800;
      margin-bottom: 16px;
    }

    .cta-left p {
      color: rgba(255, 255, 255, 0.78);
      margin-bottom: 24px;
      max-width: 440px;
    }

    .cta-features {
      list-style: none;
      padding: 0;
      margin: 0 0 28px;
    }

    .cta-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 6px 0;
      color: rgba(255, 255, 255, 0.9);
      font-size: 0.95rem;
    }

    .cta-features li i {
      color: var(--brand-gold-light);
    }

    .cta-form-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
      color: var(--text-main);
    }

    .cta-form-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .cta-form-card .form-sub {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 22px;
    }

    .form-control {
      height: 48px;
      border-radius: 10px;
      border: 1px solid var(--border-soft);
      padding: 0 16px;
      font-size: 0.95rem;
      background: #FBF9F7;
    }

    .form-control:focus {
      border-color: var(--brand-gold);
      box-shadow: 0 0 0 4px rgba(216, 168, 78, 0.18);
      background: #fff;
    }

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

    .code-row .form-control {
      flex: 1;
    }

    .btn-code {
      display: inline-flex;
      align-items: center;
      background: rgba(216, 168, 78, 0.14);
      border: 1px solid rgba(216, 168, 78, 0.4);
      color: var(--brand-primary);
      font-size: 0.85rem;
      font-weight: 600;
      padding: 0 18px;
      border-radius: 10px;
      white-space: nowrap;
      cursor: pointer;
      height: 48px;
      transition: all 0.2s ease;
    }

    .btn-code:hover {
      background: rgba(216, 168, 78, 0.24);
    }

    .btn-cta-submit {
      width: 100%;
      height: 48px;
      background: var(--gradient-gold);
      color: #2B1D3A;
      font-size: 1rem;
      font-weight: 700;
      border: none;
      border-radius: 999px;
      margin-top: 16px;
      transition: all 0.2s ease;
      cursor: pointer;
    }

    .btn-cta-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(216, 168, 78, 0.45);
    }

    .cta-agreement {
      font-size: 0.78rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 14px;
    }

    .cta-agreement a {
      color: var(--brand-primary);
      font-weight: 600;
    }

    /* 页脚 */
    .site-footer {
      background: var(--bg-deep);
      color: rgba(255, 255, 255, 0.75);
      padding: 60px 0 30px;
      position: relative;
      margin-top: 40px;
    }

    .site-footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient-gold);
    }

    .footer-brand {
      font-size: 1.4rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 10px;
    }

    .footer-desc {
      font-size: 0.9rem;
      color: rgba(255, 255, 255, 0.6);
      max-width: 480px;
      margin-bottom: 24px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      list-style: none;
      padding: 0;
      margin: 0 0 30px;
    }

    .footer-links a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 16px;
      font-size: 0.9rem;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      color: rgba(255, 255, 255, 0.75);
      transition: all 0.2s ease;
    }

    .footer-links a:hover {
      background: rgba(216, 168, 78, 0.14);
      border-color: rgba(216, 168, 78, 0.4);
      color: var(--brand-gold-light);
    }

    .footer-divider {
      height: 1px;
      background: rgba(255, 255, 255, 0.1);
      margin-bottom: 24px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.45);
    }

    .footer-domain {
      font-weight: 700;
      letter-spacing: 0.04em;
      color: rgba(216, 168, 78, 0.7);
    }

    /* 响应式 */
    @media (min-width: 992px) and (max-width: 1199px) {
      .compare-grid {
        gap: 18px;
      }

      .compare-card {
        padding: 24px 20px;
      }
    }

    @media (max-width: 991.98px) {
      .nav-toggler {
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .nav-links {
        position: fixed;
        top: 64px;
        left: 16px;
        right: 16px;
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: 0 20px 50px rgba(23, 16, 32, 0.18);
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        display: none;
        z-index: 1090;
      }

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

      .nav-links li a:not(.btn-nav-cta) {
        color: var(--text-main) !important;
        padding: 12px 18px;
      }

      .nav-links li a:not(.btn-nav-cta):hover {
        background: rgba(43, 29, 58, 0.05);
        color: var(--text-main) !important;
      }

      .nav-links li a.active {
        color: var(--brand-gold) !important;
      }

      .btn-nav-cta {
        margin: 8px 0 0;
        justify-content: center;
      }

      .page-hero {
        min-height: auto;
        padding: 130px 0 70px;
      }

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

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

      .compare-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
      }

      .compare-card.highlight {
        transform: none;
      }

      .compare-card.highlight:hover {
        transform: translateY(-4px);
      }

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

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

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

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

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

      .section-title {
        font-size: 1.6rem;
      }

      .page-hero h1 {
        font-size: 1.8rem;
      }

      .hero-stats {
        flex-direction: column;
      }

      .stat-badge {
        width: 100%;
      }

      .cta-panel {
        padding: 30px 24px;
      }

      .cta-form-card {
        padding: 24px 20px;
      }

      .code-row {
        flex-direction: column;
      }

      .btn-code {
        width: 100%;
        justify-content: center;
      }

      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }

    @media (max-width: 575px) {
      .brand-main {
        font-size: 1rem;
      }

      .brand-sub {
        font-size: 0.66rem;
      }

      .page-hero h1 {
        font-size: 1.55rem;
      }

      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .hero-actions .btn-gold,
      .hero-actions .btn-outline-light {
        width: 100%;
        justify-content: center;
      }

      .compare-price {
        font-size: 1.7rem;
      }

      .data-item .data-val {
        font-size: 1.7rem;
      }

      .accordion-button {
        font-size: 0.92rem;
        padding: 16px 18px;
      }

      .accordion-body {
        padding: 0 18px 18px;
      }

      .cta-features {
        margin-bottom: 20px;
      }
    }

/* roulang page: article */
:root {
  --brand-primary: #2B1D3A;
  --brand-primary-light: #412B56;
  --brand-gold: #D8A84E;
  --brand-gold-light: #F0CE7D;
  --bg-page: #F6F2EC;
  --bg-card: #FFFFFF;
  --bg-deep: #171020;
  --text-main: #211A2A;
  --text-secondary: #5D5368;
  --text-muted: #8A7E99;
  --border-soft: #E6DED3;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 20px rgba(43, 29, 58, 0.08);
  --shadow-hover: 0 16px 36px rgba(43, 29, 58, 0.14);
  --gradient-hero: radial-gradient(1200px 600px at 75% 20%, #593a78 0%, transparent 60%), linear-gradient(135deg, #171020 0%, #2B1D3A 60%, #412B56 100%);
  --gradient-gold: linear-gradient(135deg, #F0CE7D 0%, #D8A84E 100%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--brand-gold);
}

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

input,
button,
select,
textarea {
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-right: 16px;
  padding-left: 16px;
}

/* ========== 导航 ========== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1080;
  background: transparent;
  padding: 18px 0;
  transition: background .3s ease, padding .3s ease, box-shadow .3s ease;
}

.site-nav.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  padding: 10px 0;
  box-shadow: 0 4px 18px rgba(43, 29, 58, 0.08);
  border-bottom: 1px solid var(--border-soft);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.25;
  text-decoration: none;
  z-index: 1091;
}

.brand-main {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  transition: color .3s ease;
}

.brand-sub {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.06em;
  transition: color .3s ease;
}

.site-nav.scrolled .brand-main {
  color: var(--text-main);
}

.site-nav.scrolled .brand-sub {
  color: var(--text-muted);
}

.nav-toggler {
  display: none;
  background: none;
  border: 0;
  font-size: 1.4rem;
  color: #fff;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
  z-index: 1091;
  transition: color .3s ease;
}

.site-nav.scrolled .nav-toggler {
  color: var(--text-main);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  transition: transform .35s ease, opacity .35s ease;
}

.nav-links li a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  transition: background .25s ease, color .25s ease, transform .2s ease;
}

.site-nav.scrolled .nav-links li a {
  color: var(--text-secondary);
}

.nav-links li a:hover {
  color: var(--brand-gold-light);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.site-nav.scrolled .nav-links li a:hover {
  color: var(--brand-primary);
  background: rgba(216, 168, 78, 0.12);
}

.nav-links li a.active {
  color: var(--brand-gold-light);
  background: rgba(216, 168, 78, 0.16);
}

.site-nav.scrolled .nav-links li a.active {
  color: var(--brand-primary);
  background: rgba(216, 168, 78, 0.22);
}

.nav-links .btn-nav-cta {
  background: var(--gradient-gold);
  color: #2B1D3A !important;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(216, 168, 78, 0.35);
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.nav-links .btn-nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(216, 168, 78, 0.4);
  filter: brightness(1.06);
}

/* ========== 文章横幅 / 面包屑 ========== */
.article-banner {
  position: relative;
  padding: 104px 0 30px;
  background:
    linear-gradient(135deg, rgba(23, 16, 32, 0.90) 0%, rgba(43, 29, 58, 0.84) 100%),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-bottom: 3px solid var(--brand-gold);
}

.breadcrumb-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.8);
  transition: color .2s ease;
}

.breadcrumb-nav a:hover {
  color: var(--brand-gold-light);
}

.breadcrumb-nav .bc-sep {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-nav .bc-current {
  color: var(--brand-gold-light);
  font-weight: 500;
  max-width: 420px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.crumb-capsule {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 10px 20px;
  border-radius: 999px;
  margin-bottom: 6px;
}

/* ========== 文章主体 ========== */
.article-section {
  padding: 56px 0 70px;
}

.article-container {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 44px 44px;
  box-shadow: var(--shadow-card);
}

.article-top-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(216, 168, 78, 0.16), rgba(216, 168, 78, 0.08));
  border: 1px solid rgba(216, 168, 78, 0.45);
  color: #8A6420;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
}

.date-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.date-meta i {
  font-size: 0.78rem;
}

.article-title {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 12px;
}

.article-meta-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-meta-line i {
  margin-right: 4px;
}

.article-meta-line .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--brand-gold);
  opacity: 0.6;
}

.article-summary {
  position: relative;
  background: #F6F2EC;
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--brand-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin-bottom: 26px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.article-summary strong {
  color: var(--brand-primary);
  margin-right: 4px;
}

.article-cover {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--text-main);
  word-break: break-word;
}

.article-body h1,
.article-body h2,
.article-body h3 {
  margin-top: 2em;
  margin-bottom: 0.7em;
  font-weight: 700;
  line-height: 1.4;
  color: var(--brand-primary);
}

.article-body h2 {
  font-size: 1.45rem;
  border-left: 4px solid var(--brand-gold);
  padding-left: 14px;
}

.article-body h3 {
  font-size: 1.2rem;
}

.article-body p {
  margin-bottom: 1.25em;
}

.article-body img {
  border-radius: var(--radius-md);
  margin: 1.5em 0;
  max-width: 100%;
  height: auto;
}

.article-body blockquote {
  position: relative;
  margin: 1.6em 0;
  padding: 18px 22px;
  background: #F6F2EC;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--brand-gold);
  color: var(--text-secondary);
  font-style: normal;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body pre {
  background: var(--bg-deep);
  color: #F0CE7D;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.4em 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  line-height: 1.7;
}

.article-body code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: rgba(216, 168, 78, 0.1);
  color: #8A6420;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.article-body ul,
.article-body ol {
  margin: 1em 0 1.2em 1.2em;
  padding-left: 0.8em;
}

.article-body li {
  margin-bottom: 0.5em;
  list-style: disc;
}

.article-body ol li {
  list-style: decimal;
}

.article-body hr {
  border: none;
  height: 1px;
  background: var(--border-soft);
  margin: 2em 0;
}

.article-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.4em 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 0.92rem;
}

.article-body table th,
.article-body table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
}

.article-body table th {
  background: var(--brand-primary);
  color: #fff;
  font-weight: 600;
}

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

.article-body a {
  color: var(--brand-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(216, 168, 78, 0.6);
}

.article-body a:hover {
  text-decoration-color: var(--brand-gold);
  color: var(--brand-gold);
}

/* ========== 未找到 ========== */
.not-found {
  text-align: center;
  padding: 80px 24px;
}

.not-found i {
  font-size: 3.5rem;
  color: var(--brand-gold);
  margin-bottom: 16px;
  opacity: 0.7;
}

.not-found p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.btn-gold {
  display: inline-block;
  background: var(--gradient-gold);
  color: #2B1D3A;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 32px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(216, 168, 78, 0.35);
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
  border: none;
  cursor: pointer;
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(216, 168, 78, 0.4);
  filter: brightness(1.05);
  color: #2B1D3A;
}

/* ========== 相关推荐 ========== */
.related-section {
  background: #EFE9E2;
  padding: 60px 0 70px;
}

.related-section .container {
  max-width: 1200px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-main);
  margin: 0;
  position: relative;
}

.section-head h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: var(--gradient-gold);
  margin-top: 8px;
}

.back-to-list {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border-soft);
  background: #fff;
  padding: 8px 18px;
  border-radius: 999px;
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.back-to-list:hover {
  color: var(--brand-primary);
  border-color: var(--brand-gold);
  transform: translateX(-3px);
}

.related-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.related-img {
  display: block;
  overflow: hidden;
}

.related-img img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform .35s ease;
}

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

.related-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-tag {
  align-self: flex-start;
  display: inline-block;
  background: rgba(216, 168, 78, 0.14);
  color: #8A6420;
  border: 1px solid rgba(216, 168, 78, 0.3);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.related-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 8px;
}

.related-title a {
  color: inherit;
  transition: color .2s ease;
}

.related-title a:hover {
  color: var(--brand-gold);
}

.related-excerpt {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.related-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand-primary);
  transition: gap .2s ease, color .2s ease;
}

.related-more:hover {
  gap: 10px;
  color: var(--brand-gold);
}

/* ========== 页脚 ========== */
.site-footer {
  background: linear-gradient(135deg, #171020 0%, #2B1D3A 100%);
  padding: 48px 0 28px;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 0;
}

.footer-brand {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.55);
  max-width: 420px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.footer-links li a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.87rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color .2s ease;
}

.footer-links li a:hover {
  color: var(--brand-gold-light);
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin: 18px 0 16px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-domain {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

/* ========== 响应式 ========== */
@media (max-width: 991.98px) {
  .nav-toggler {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 280px;
    max-width: 86vw;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 90px 24px 30px;
    gap: 4px;
    transform: translateX(105%);
    opacity: 0;
    box-shadow: -10px 0 40px rgba(23, 16, 32, 0.18);
    border-radius: 20px 0 0 20px;
    transition: transform .35s ease, opacity .35s ease;
    overflow-y: auto;
  }

  .nav-links.show {
    transform: translateX(0);
    opacity: 1;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links li a {
    display: block;
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    color: var(--text-main) !important;
    border-radius: 12px;
  }

  .nav-links li a:hover {
    background: rgba(216, 168, 78, 0.12) !important;
    color: var(--brand-gold) !important;
  }

  .nav-links li a.active {
    background: rgba(216, 168, 78, 0.22) !important;
    color: var(--brand-primary) !important;
  }

  .nav-links .btn-nav-cta {
    margin-top: 8px;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .article-section {
    padding: 36px 0 46px;
  }

  .article-container {
    padding: 24px 20px 30px;
    border-radius: var(--radius-md);
  }

  .article-banner {
    padding: 88px 0 24px;
  }

  .breadcrumb-nav {
    font-size: 0.82rem;
  }

  .article-title {
    font-size: clamp(1.45rem, 5.5vw, 1.8rem);
  }

  .article-summary {
    padding: 14px 16px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .related-section {
    padding: 44px 0 50px;
  }
}

@media (max-width: 575px) {
  .container {
    padding-right: 12px;
    padding-left: 12px;
  }

  .article-container {
    padding: 20px 14px 24px;
  }

  .article-meta-line {
    flex-wrap: wrap;
  }

  .article-body {
    font-size: 0.98rem;
    line-height: 1.85;
  }

  .article-body blockquote {
    padding: 14px 16px;
  }

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

@media (min-width: 992px) {
  .nav-links {
    display: flex !important;
    opacity: 1 !important;
    transform: none !important;
    position: static !important;
    width: auto !important;
    height: auto !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
    backdrop-filter: none !important;
  }
}