/* roulang page: index */
:root{
  --brand:#E8481F;
  --brand-hover:#CF3D17;
  --brand-deep:#14302A;
  --accent:#FFC53D;
  --bg:#F6F4F1;
  --card:#FFFFFF;
  --dark:#14181C;
  --text:#1B1F24;
  --text-2:#5A636E;
  --text-3:#8C949E;
  --line:#E6E2DC;
  --ok:#12A67A;
  --warn:#D9822B;
  --err:#D64545;
  --r-card:14px;
  --r-block:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(20,24,28,.04),0 8px 24px rgba(20,24,28,.06);
  --sh-2:0 12px 32px rgba(20,24,28,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section:88px;
}
@media (max-width:991.98px){ :root{ --section:64px; } }
@media (max-width:575.98px){ :root{ --section:48px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{ margin:0; letter-spacing:-.01em; }
h1{ font-size:clamp(30px,4vw,52px); line-height:1.22; font-weight:800; letter-spacing:-.02em; }
h2{ font-size:clamp(24px,2.6vw,32px); line-height:1.3; font-weight:700; }
h3{ font-size:21px; line-height:1.4; font-weight:600; }
h4{ font-size:17px; line-height:1.5; font-weight:600; }
p{ margin:0 0 1em; }
p:last-child{ margin-bottom:0; }
a{ color:var(--brand); text-decoration:none; transition:color .2s var(--ease); }
a:hover{ color:var(--brand-hover); }
img{ max-width:100%; display:block; }
ul,ol{ margin:0; padding:0; }
button{ font-family:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:4px; }

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1400px){ .container{ max-width:1280px; } }
@media (max-width:575.98px){ .container{ padding-left:16px; padding-right:16px; } }

/* ============ 导航 ============ */
.site-header{
  position:absolute;
  top:0; left:0; right:0;
  z-index:1040;
  background:rgba(255,255,255,.14);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  box-shadow:0 8px 24px rgba(0,0,0,.12);
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header.scrolled{
  position:fixed;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(20,24,28,.08);
}
.nav-wrap{
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-size:16.5px;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
}
.brand:hover{ color:#fff; }
.site-header.scrolled .brand{ color:var(--text); }
.site-header.scrolled .brand:hover{ color:var(--brand); }
.brand-mark{
  width:34px; height:34px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:800;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.main-nav{ display:flex; align-items:center; gap:4px; }
.main-nav .nav-link{
  position:relative;
  padding:9px 15px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.92);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.main-nav .nav-link:hover{ color:#fff; background:rgba(255,255,255,.13); }
.main-nav .nav-link.active{ color:#fff; font-weight:600; }
.main-nav .nav-link.active::after{
  content:'';
  position:absolute;
  left:15px; right:15px; bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.site-header.scrolled .main-nav .nav-link{ color:var(--text-2); }
.site-header.scrolled .main-nav .nav-link:hover{ color:var(--text); background:rgba(20,24,28,.05); }
.site-header.scrolled .main-nav .nav-link.active{ color:var(--text); }
.nav-actions{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }
.icon-btn{
  width:40px; height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.32);
  background:rgba(255,255,255,.10);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:15px;
  cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{ background:rgba(255,255,255,.24); color:#fff; }
.site-header.scrolled .icon-btn{ color:var(--text-2); border-color:var(--line); background:#fff; }
.site-header.scrolled .icon-btn:hover{ background:#F6F4F1; color:var(--text); }
.hamburger{
  display:none;
  width:42px; height:42px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.32);
  background:rgba(255,255,255,.10);
  cursor:pointer;
  padding:0;
}
.hamburger span{
  display:block;
  width:18px; height:2px;
  margin:3px auto;
  background:#fff;
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease),background-color .22s var(--ease);
}
.site-header.scrolled .hamburger{ border-color:var(--line); background:#fff; }
.site-header.scrolled .hamburger span{ background:var(--text); }
.hamburger.is-open span:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.hamburger.is-open span:nth-child(2){ opacity:0; }
.hamburger.is-open span:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }

.mobile-drawer{
  position:fixed;
  top:0; right:0; bottom:0;
  width:min(84vw,340px);
  z-index:1060;
  padding:92px 22px 28px;
  background:rgba(20,24,28,.94);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.open{ transform:translateX(0); }
.mobile-drawer a.drawer-link{
  display:block;
  line-height:52px;
  font-size:16px;
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.mobile-drawer a.drawer-link.active{ color:var(--accent); font-weight:600; }
.mobile-drawer .btn{ margin-top:24px; width:100%; }
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(10,14,18,.5);
  opacity:0;
  visibility:hidden;
  z-index:1050;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.show{ opacity:1; visibility:visible; }

/* ============ 按钮 ============ */
.btn{
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  padding:12px 22px;
  border:1px solid transparent;
  line-height:1.4;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:focus,.btn:active{ box-shadow:none; }
.btn-brand{ background:var(--brand); color:#fff; }
.btn-brand:hover{ background:var(--brand-hover); color:#fff; transform:translateY(-1px); }
.btn-ghost{ background:transparent; border-color:var(--brand); color:var(--brand); }
.btn-ghost:hover{ background:rgba(232,72,31,.08); color:var(--brand); }
.btn-ghost-light{ background:transparent; border-color:rgba(255,255,255,.6); color:#fff; }
.btn-ghost-light:hover{ background:rgba(255,255,255,.16); border-color:#fff; color:#fff; }
.btn-dark-solid{ background:var(--dark); color:#fff; }
.btn-dark-solid:hover{ background:#000; color:#fff; }
.btn-nav{ padding:9px 18px; font-size:14px; }
.btn-lg{ padding:14px 28px; font-size:16px; }
.btn-block{ width:100%; }

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.link-arrow i{ font-style:normal; transition:transform .2s var(--ease); }
.link-arrow:hover i{ transform:translateX(3px); }

/* ============ 区块基础 ============ */
.section{ padding:var(--section) 0; scroll-margin-top:90px; }
.section-white{ background:#fff; }
.section-head{ max-width:720px; margin-bottom:48px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-tag{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand);
  background:rgba(232,72,31,.10);
  padding:5px 13px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-head h2{ margin-bottom:14px; }
.section-head p{ color:var(--text-2); font-size:16.5px; margin:0; }

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  min-height:min(88vh,720px);
  padding:142px 0 84px;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(10,14,18,.93) 0%,rgba(10,14,18,.82) 38%,rgba(10,14,18,.42) 74%,rgba(10,14,18,.28) 100%);
}
.hero-inner{ position:relative; z-index:2; width:100%; }
.hero-eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:#FFD98A;
  background:rgba(255,197,61,.14);
  border:1px solid rgba(255,197,61,.32);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:22px;
}
.hero-copy h1{ color:#fff; margin-bottom:20px; max-width:640px; }
.hero-sub{
  font-size:19px;
  line-height:1.7;
  color:rgba(255,255,255,.86);
  max-width:560px;
  margin-bottom:30px;
}
.hero-cta{ display:flex; flex-wrap:wrap; gap:14px; }
.trust-bar{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  margin:34px 0 0;
  padding:0;
  font-size:14px;
  color:rgba(255,255,255,.82);
}
.trust-bar li{ position:relative; padding:0 16px; }
.trust-bar li:first-child{ padding-left:0; }
.trust-bar li + li::before{
  content:'';
  position:absolute;
  left:0; top:50%;
  transform:translateY(-50%);
  width:1px; height:14px;
  background:rgba(255,255,255,.35);
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:0 24px 60px rgba(0,0,0,.38);
}

/* ============ 优惠阶梯 ============ */
.tier-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  align-items:start;
}
.tier-card{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:#fff;
  padding:28px 22px 24px;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tier-card:hover{ transform:translateY(-2px); box-shadow:var(--sh-2); }
.tier-no{
  display:block;
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.tier-card h3{ margin:12px 0 10px; }
.tier-card p{ font-size:15px; line-height:1.8; color:var(--text-2); margin-bottom:16px; }
.chip{
  display:inline-block;
  font-size:12.5px;
  font-weight:600;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(232,72,31,.10);
  color:var(--brand);
  margin-bottom:18px;
}
.tier-card.t2{ margin-top:26px; background:#FDF1EC; }
.tier-card.t3{ margin-top:52px; background:#FAE0D6; }
.tier-card.t4{
  margin-top:78px;
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
.tier-card.t4 .tier-no{ color:var(--accent); }
.tier-card.t4 p{ color:rgba(255,255,255,.88); }
.tier-card.t4 .chip{ background:rgba(255,255,255,.20); color:#fff; }
.tier-card.t4 .link-arrow{ color:#fff; }

/* ============ 对比表 ============ */
.table-shell{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--sh-1);
}
.compare-table{
  width:100%;
  min-width:880px;
  margin:0;
  border-collapse:separate;
  border-spacing:0;
}
.compare-table th,
.compare-table td{
  padding:16px 18px;
  font-size:15px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{ border-bottom:none; }
.compare-table thead th{
  position:sticky;
  top:0;
  z-index:2;
  background:var(--brand-deep);
  color:#fff;
  font-weight:600;
  border-bottom:none;
}
.compare-table thead th.is-rec{
  background:#1D3B33;
  box-shadow:inset 0 2px 0 0 var(--accent);
}
.rec-badge{
  display:inline-block;
  font-size:11px;
  font-weight:800;
  background:var(--accent);
  color:#3A2A00;
  padding:2px 8px;
  border-radius:999px;
  margin-right:7px;
  vertical-align:1px;
}
.compare-table tbody th{
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
}
.compare-table tbody tr:nth-child(odd) th,
.compare-table tbody tr:nth-child(odd) td{ background:#FAF9F7; }
.compare-table tbody tr:nth-child(even) th,
.compare-table tbody tr:nth-child(even) td{ background:#FFFFFF; }
.compare-table tbody tr td.is-rec,
.compare-table tbody tr th.is-rec{ background:#FFF6E2; }
.compare-table td{ color:var(--text-2); }

/* ============ 限时入口 ============ */
.limited{
  background:var(--dark);
  color:#fff;
  padding:var(--section) 0;
  scroll-margin-top:90px;
}
.limited-grid{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:48px;
  align-items:center;
}
.countdown{ display:flex; gap:14px; }
.cd-cell{
  width:78px;
  height:78px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
}
.cd-num{
  font-size:30px;
  font-weight:800;
  line-height:1;
  color:#fff;
  font-variant-numeric:tabular-nums;
}
.cd-label{ font-size:12px; color:rgba(255,255,255,.6); margin-top:7px; }
.limited-copy h2{ color:#fff; margin-bottom:14px; }
.limited-copy p{ color:rgba(255,255,255,.72); font-size:16.5px; max-width:560px; margin-bottom:24px; }
.progress-wrap{ margin-top:48px; max-width:720px; }
.progress-top{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-size:14px;
  color:rgba(255,255,255,.72);
  margin-bottom:12px;
}
.progress-top strong{ color:var(--accent); font-size:16px; font-weight:700; font-variant-numeric:tabular-nums; }
.progress-track{
  height:8px;
  border-radius:999px;
  background:rgba(255,255,255,.15);
  overflow:hidden;
}
.progress-fill{
  height:100%;
  border-radius:999px;
  background:var(--accent);
  transition:width .6s var(--ease);
}

/* ============ 最新信息 ============ */
.list-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.list-head .section-head{ margin-bottom:0; }
.post-card{
  height:100%;
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{ transform:translateY(-2px); box-shadow:var(--sh-2); }
.post-cover{
  position:relative;
  display:block;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EFECE8;
}
.post-cover img{
  width:100%; height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.post-card:hover .post-cover img{ transform:scale(1.03); }
.post-badge{
  position:absolute;
  left:12px;
  bottom:12px;
  font-size:12px;
  font-weight:600;
  padding:4px 11px;
  border-radius:999px;
  background:rgba(232,72,31,.92);
  color:#fff;
  backdrop-filter:blur(4px);
}
.post-body{
  padding:20px 20px 18px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.post-body h3{
  font-size:18px;
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-body h3 a{ color:var(--text); }
.post-body h3 a:hover{ color:var(--brand); }
.post-body .post-sum{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13.5px;
  color:var(--text-3);
}
.post-foot .link-arrow{ font-size:14px; }

.empty-state{
  text-align:center;
  padding:56px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.empty-state i{ font-size:64px; color:var(--text-3); display:block; margin-bottom:20px; }
.empty-state p{ font-size:16px; color:var(--text-2); margin-bottom:22px; }

/* ============ 咨询表单 ============ */
.consult-points{ list-style:none; margin:28px 0 0; padding:0; }
.consult-points li{
  position:relative;
  padding-left:30px;
  margin-bottom:14px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.consult-points li::before{
  content:'\f00c';
  font-family:'Font Awesome 6 Free';
  font-weight:900;
  position:absolute;
  left:0;
  top:4px;
  font-size:14px;
  color:var(--brand);
}
.consult-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-block);
  padding:30px 26px;
  box-shadow:var(--sh-1);
}
.form-row{ margin-bottom:18px; }
.form-row label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.form-row label .req{ color:var(--err); margin-left:2px; }
.form-control,
.form-select{
  height:46px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background-color:#fff;
  font-size:15px;
  color:var(--text);
  padding:0 14px;
  box-shadow:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-select{ padding-right:36px; }
.form-control:focus,
.form-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(232,72,31,.12);
  outline:none;
}
.form-control::placeholder{ color:var(--text-3); }
textarea.form-control{
  height:auto;
  min-height:120px;
  padding:12px 14px;
  line-height:1.7;
  resize:vertical;
}
.field-err{
  display:none;
  font-size:13px;
  color:var(--err);
  margin:6px 0 0;
  line-height:1.6;
}
.field-err.show{ display:block; }
.form-note{ font-size:13px; color:var(--text-3); margin-top:14px; line-height:1.7; }
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--r-btn);
  background:rgba(18,166,122,.10);
  border:1px solid rgba(18,166,122,.3);
  color:#0E7C5B;
  font-size:14px;
  line-height:1.7;
}
.form-success.show{ display:block; }

/* ============ FAQ ============ */
.faq-wrap{ max-width:840px; margin:0 auto; }
.accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.accordion-item:first-child{ border-top:1px solid var(--line); }
.accordion-button{
  width:100%;
  background:transparent;
  border:none;
  box-shadow:none;
  padding:24px 44px 24px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  position:relative;
  border-radius:0;
  transition:color .2s var(--ease);
}
.accordion-button:not(.collapsed){ color:var(--brand); background:transparent; box-shadow:none; }
.accordion-button:focus{ box-shadow:none; border-color:transparent; }
.accordion-button:hover{ color:var(--brand); }
.accordion-button::after{ display:none; }
.accordion-button::before{
  content:'+';
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::before{ transform:translateY(-50%) rotate(45deg); }
.accordion-body{
  padding:0 40px 26px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-deep);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  font-size:14.5px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:16.5px;
  font-weight:800;
  margin-bottom:18px;
}
.footer-brand:hover{ color:var(--accent); }
.footer-brand .brand-mark{ background:var(--brand); }
.site-footer h4{
  color:#fff;
  font-size:15px;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.site-footer p{ line-height:1.85; color:rgba(255,255,255,.68); max-width:340px; }
.footer-links,
.footer-contact{ list-style:none; margin:0; padding:0; }
.footer-links li,
.footer-contact li{ margin-bottom:12px; line-height:1.7; }
.footer-links a{
  color:rgba(255,255,255,.72);
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{
  color:var(--accent);
  transform:translateX(2px);
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}
.footer-bottom p{ margin:0; max-width:none; color:rgba(255,255,255,.55); }

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .tier-grid{ gap:20px; }
}
@media (max-width:991.98px){
  .main-nav{ display:none; }
  .hamburger{ display:block; }
  .nav-actions .btn-nav{ display:none; }
  .hero{ padding:118px 0 68px; min-height:auto; }
  .hero-visual{ margin-top:38px; }
  .limited-grid{ grid-template-columns:1fr; gap:32px; }
  .tier-grid{ grid-template-columns:repeat(2,1fr); }
  .tier-card.t2,.tier-card.t3,.tier-card.t4{ margin-top:0; }
  .list-head{ flex-direction:column; align-items:flex-start; gap:14px; }
}
@media (max-width:767.98px){
  .hero-sub{ font-size:17px; }
  .trust-bar{ font-size:13px; }
  .trust-bar li{ padding:0 12px; }
  .cd-cell{ width:64px; height:64px; }
  .cd-num{ font-size:24px; }
  .consult-card{ padding:24px 20px; }
  .accordion-button{ font-size:16px; padding:20px 40px 20px 0; }
  .accordion-body{ padding:0 20px 22px 0; }
}
@media (max-width:575.98px){
  .tier-grid{ grid-template-columns:1fr; }
  .hero{ padding:104px 0 56px; }
  .hero-cta{ flex-direction:column; align-items:stretch; }
  .hero-cta .btn{ width:100%; }
  .trust-bar{ flex-direction:column; gap:8px; }
  .trust-bar li{ padding:0; }
  .trust-bar li + li::before{ display:none; }
  .brand{ font-size:15px; }
  .brand-mark{ width:30px; height:30px; font-size:12px; }
  .footer-bottom{ flex-direction:column; }
  .site-footer{ padding:56px 0 24px; text-align:left; }
  .empty-state{ padding:44px 16px; }
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --brand:#E8481F;
  --brand-hover:#CF3D17;
  --brand-deep:#14302A;
  --accent:#FFC53D;
  --bg:#F6F4F1;
  --card:#FFFFFF;
  --dark:#14181C;
  --text:#1B1F24;
  --muted:#5A636E;
  --dim:#8C949E;
  --line:#E6E2DC;
  --ok:#12A67A;
  --warn:#D9822B;
  --err:#D64545;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --shadow:0 1px 2px rgba(20,24,28,.04), 0 8px 24px rgba(20,24,28,.06);
  --shadow-hover:0 12px 32px rgba(20,24,28,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-hover);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  max-width:1200px;
  padding-left:20px;
  padding-right:20px;
  margin:0 auto;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  text-decoration:none;
}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(232,72,31,.08);color:var(--brand);}
.btn-dark{background:var(--dark);color:#fff;border-color:var(--dark);}
.btn-dark:hover{background:#000;color:#fff;}
.btn-sm{padding:9px 18px;font-size:14px;}
/* ---------- 导航 ---------- */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:1000;
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(255,255,255,.14);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  box-shadow:0 8px 24px rgba(0,0,0,.12);
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  position:fixed;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 16px rgba(20,24,28,.07);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
  height:76px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:800;
  letter-spacing:.5px;
  flex-shrink:0;
}
.brand-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:.2px;white-space:nowrap;transition:color .22s var(--ease);}
.site-header.is-scrolled .brand-text{color:var(--text);}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:#fff;
  border-radius:8px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{font-weight:600;}
.site-header.is-scrolled .nav-link{color:var(--text);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.10);
  color:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.24);}
.site-header.is-scrolled .icon-btn{border-color:var(--line);background:#fff;color:var(--text);}
.site-header.is-scrolled .icon-btn:hover{background:#F6F4F1;}
.menu-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.28);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
}
.menu-toggle span{width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease),background .22s var(--ease);}
.site-header.is-scrolled .menu-toggle{background:#fff;border-color:var(--line);}
.site-header.is-scrolled .menu-toggle span{background:var(--text);}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(320px,86vw);
  background:rgba(20,24,28,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.12);
  z-index:1100;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  display:flex;
  flex-direction:column;
  padding:88px 24px 24px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-link{
  display:block;
  line-height:52px;
  color:#fff;
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.10);
  text-align:left;
}
.drawer-link:hover{color:var(--accent);}
.drawer-cta{margin-top:auto;width:100%;}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(20,24,28,.5);
  z-index:1050;
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
@media (max-width:991px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .brand-text{font-size:15px;}
}
@media (max-width:575px){
  .header-actions .btn-sm{display:none;}
}
/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:150px 0 64px;
  background:var(--brand-deep);
  overflow:hidden;
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.45;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(20,48,42,.95) 0%,rgba(20,48,42,.76) 46%,rgba(20,24,28,.5) 100%);
}
.page-hero-inner{position:relative;z-index:2;color:#fff;}
.breadcrumb-nav{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.7);
  margin-bottom:20px;
}
.breadcrumb-nav a{color:rgba(255,255,255,.8);}
.breadcrumb-nav a:hover{color:var(--accent);}
.breadcrumb-nav .current{
  color:#fff;
  max-width:420px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.badge-cat{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
  background:rgba(232,72,31,.10);
  color:var(--brand);
}
.page-hero .badge-cat{background:rgba(232,72,31,.94);color:#fff;}
.page-hero h1{
  font-size:38px;
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  max-width:900px;
  margin:16px 0 18px;
}
.meta-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.74);
  font-variant-numeric:tabular-nums;
}
.meta-line .dot{color:rgba(255,255,255,.4);}
@media (max-width:991px){
  .page-hero{padding:120px 0 48px;}
}
@media (max-width:768px){
  .page-hero{padding:112px 0 40px;}
  .page-hero h1{font-size:26px;line-height:1.35;}
  .breadcrumb-nav .current{max-width:200px;}
}
/* ---------- 正文 ---------- */
.article-main{padding:64px 0 8px;}
.article-shell{
  max-width:880px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:48px 44px 42px;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:#282e34;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body p{margin:0 0 1em;}
.article-body > p:first-of-type{font-size:17.5px;color:#20262c;}
.article-body h2{
  font-size:24px;
  font-weight:700;
  line-height:1.4;
  margin:44px 0 18px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  color:var(--text);
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:34px 0 14px;color:var(--text);}
.article-body h4{font-size:17px;font-weight:600;margin:26px 0 12px;}
.article-body h2 + p,.article-body h3 + p{margin-top:0;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em;}
.article-body li{margin-bottom:10px;line-height:1.85;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:700;}
.article-body blockquote{
  margin:26px 0;
  padding:20px 22px;
  background:#FAF9F7;
  border-left:4px solid var(--accent);
  border-radius:0 14px 14px 0;
  color:#495158;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:24px auto;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-hover);}
.article-body table{
  display:block;
  overflow-x:auto;
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  margin:26px 0;
  border-radius:12px;
}
.article-body table th{
  background:var(--brand-deep);
  color:#fff;
  font-weight:600;
  padding:12px 16px;
  text-align:left;
  white-space:nowrap;
}
.article-body table td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  color:#333a41;
}
.article-body table tr:nth-child(even) td{background:#FAF9F7;}
.article-body code{
  background:#F1EEE9;
  padding:2px 7px;
  border-radius:6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;
  color:#2b3238;
}
.article-body pre{
  background:#14181C;
  color:#EDEAE5;
  padding:20px 22px;
  border-radius:14px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
  margin:26px 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
@media (max-width:768px){
  .article-main{padding:36px 0 4px;}
  .article-shell{padding:26px 20px 28px;border-radius:var(--r-card);}
  .article-body{font-size:16.5px;}
  .article-body h2{font-size:21px;margin:34px 0 14px;}
  .article-body h3{font-size:18.5px;}
}
/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:56px 20px;
}
.empty-state .ico{
  font-size:54px;
  color:var(--dim);
  display:block;
  margin-bottom:18px;
}
.empty-state h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}
/* ---------- 结尾 CTA ---------- */
.article-cta-wrap{padding:14px 0 0;}
.cta-card{
  max-width:880px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  background:#FAF9F7;
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  border-radius:var(--r-card);
  padding:24px 28px;
}
.cta-card h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.cta-card p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.7;}
@media (max-width:575px){
  .cta-card{padding:20px;flex-direction:column;align-items:flex-start;}
  .cta-card .btn{width:100%;}
}
/* ---------- 相关推荐 ---------- */
.related-section{padding:64px 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:28px;
}
.section-head h2{font-size:28px;font-weight:700;letter-spacing:-.01em;}
.section-head .sub{font-size:14px;color:var(--dim);margin:6px 0 0;}
.link-more{
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.link-more i{transition:transform .2s var(--ease);}
.link-more:hover{color:var(--brand-hover);}
.link-more:hover i{transform:translateX(3px);}
.post-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  color:inherit;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);color:inherit;border-color:#dcd6ce;}
.post-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EFECE7;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.post-body .badge-cat{align-self:flex-start;margin-bottom:12px;}
.post-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-body p{
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  border-top:1px solid var(--line);
  padding-top:12px;
  font-size:13px;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
}
.post-foot .arrow{color:var(--brand);font-weight:600;transition:transform .2s var(--ease);}
.post-card:hover .post-foot .arrow{transform:translateX(3px);}
/* ---------- 上下篇 ---------- */
.post-nav-section{padding:56px 0 var(--gap);}
.post-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  max-width:880px;
  margin:0 auto 24px;
}
.post-nav-item{
  display:block;
  padding:18px 22px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  color:inherit;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.post-nav-item:hover{color:inherit;border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.post-nav-item .lbl{display:block;font-size:13px;color:var(--dim);margin-bottom:6px;}
.post-nav-item:hover .lbl{color:var(--brand);}
.post-nav-item .ttl{font-size:15px;font-weight:600;line-height:1.55;}
.post-nav-item.next{text-align:right;}
.back-row{text-align:center;}
@media (max-width:767px){
  .post-nav{grid-template-columns:1fr;gap:14px;}
  .post-nav-item.next{text-align:left;}
}
/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand:hover{color:#fff;}
.site-footer > .container > .row > div > p{
  font-size:14.5px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  margin:0;
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  color:rgba(255,255,255,.72);
  font-size:14.5px;
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{font-size:14.5px;line-height:2;color:rgba(255,255,255,.72);font-variant-numeric:tabular-nums;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  margin-top:40px;
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.56);
  font-variant-numeric:tabular-nums;
}
.footer-bottom p{margin:0;}
@media (max-width:767px){
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:575px){
  .site-footer h4{margin-top:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --brand:#E8481F;
  --brand-dark:#CF3D17;
  --brand-soft:rgba(232,72,31,.10);
  --brand-deep:#14302A;
  --accent:#FFC53D;
  --bg:#F6F4F1;
  --bg-alt:#FAF9F7;
  --card:#FFFFFF;
  --dark:#14181C;
  --text:#1B1F24;
  --text-2:#5A636E;
  --text-3:#8C949E;
  --line:#E6E2DC;
  --ok:#12A67A;
  --warn:#D9822B;
  --err:#D64545;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(20,24,28,.04),0 8px 24px rgba(20,24,28,.06);
  --sh-2:0 12px 32px rgba(20,24,28,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:88px;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}

.section{padding:var(--sp-section) 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.10em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
.section-title{font-size:32px;line-height:1.3;font-weight:700;color:var(--text);}
.section-lead{font-size:16px;color:var(--text-2);max-width:680px;margin-top:14px;line-height:1.85;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:focus,.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:none;}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(232,72,31,.08);color:var(--brand);}
.btn-onDark{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-onDark:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;padding:0;
  font-size:15px;font-weight:600;color:var(--brand);background:none;border:0;cursor:pointer;
}
.btn-link-arrow i{transition:transform .2s var(--ease);font-size:13px;}
.btn-link-arrow:hover i{transform:translateX(3px);}
.btn-link-arrow:hover{color:var(--brand-dark);}

/* ---------- header / nav ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:1040;
  padding-top:14px;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease),padding .2s var(--ease);
}
.site-header .nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;padding:0 22px;
  border-radius:18px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 8px 24px rgba(0,0,0,.12);
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),border-radius .2s var(--ease);
}
.site-header.stuck{
  position:fixed;padding-top:0;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(20,24,28,.07);
}
.site-header.stuck .nav-shell{
  background:transparent;border-color:transparent;box-shadow:none;
  border-radius:0;backdrop-filter:none;-webkit-backdrop-filter:none;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(232,72,31,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.brand-sub{font-size:11px;font-weight:500;color:rgba(255,255,255,.68);letter-spacing:.06em;}
.site-header.stuck .brand-name{color:var(--text);}
.site-header.stuck .brand-sub{color:var(--text-3);}

.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav .nav-link{
  position:relative;padding:8px 0;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.88);
}
.main-nav .nav-link:hover{color:#fff;}
.main-nav .nav-link.active{color:#fff;font-weight:600;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.site-header.stuck .main-nav .nav-link{color:var(--text-2);}
.site-header.stuck .main-nav .nav-link:hover{color:var(--brand);}
.site-header.stuck .main-nav .nav-link.active{color:var(--brand);}

.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.28);
  color:#fff;cursor:pointer;transition:all .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.22);}
.site-header.stuck .icon-btn{background:var(--bg-alt);border-color:var(--line);color:var(--text);}
.site-header.stuck .icon-btn:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);}
.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.10);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.site-header.stuck .hamburger{border-color:var(--line);background:var(--bg-alt);}
.site-header.stuck .hamburger span{background:var(--text);}

.search-panel{
  position:absolute;left:0;right:0;top:100%;margin-top:10px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.search-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-panel .inner{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;
  box-shadow:var(--sh-2);display:flex;gap:10px;
}
.search-panel input{
  flex:1;height:46px;border-radius:10px;border:1px solid var(--line);
  padding:0 14px;font-size:15px;background:#fff;
}
.search-panel input::placeholder{color:var(--text-3);}
.search-panel input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(232,72,31,.12);}

/* drawer */
.nav-drawer{
  background:rgba(20,24,28,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  color:#fff;border:0;width:300px;
}
.nav-drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.12);padding:18px 20px;}
.nav-drawer .brand-name{color:#fff;}
.nav-drawer .brand-sub{color:rgba(255,255,255,.6);}
.nav-drawer .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.8;}
.nav-drawer .offcanvas-body{display:flex;flex-direction:column;padding:14px 20px 24px;}
.drawer-link{
  display:flex;align-items:center;height:52px;font-size:16px;
  color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link:hover{color:#fff;}
.drawer-link.active{color:var(--accent);font-weight:600;}
.drawer-cta{margin-top:auto;padding-top:22px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:320px;display:flex;align-items:flex-end;
  padding:150px 0 56px;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(20,24,28,.92) 0%,rgba(20,24,28,.76) 46%,rgba(20,24,28,.40) 100%);
}
.page-hero-inner{position:relative;z-index:2;color:#fff;max-width:820px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(255,255,255,.4);}
.crumb .cur{color:rgba(255,255,255,.94);}
.page-hero h1{font-size:46px;line-height:1.22;font-weight:800;letter-spacing:-.02em;color:#fff;}
.h1-note{display:block;margin-top:12px;font-size:15px;font-weight:500;letter-spacing:0;color:rgba(255,255,255,.74);}
.page-hero .hero-sub{margin:16px 0 26px;font-size:19px;line-height:1.7;color:rgba(255,255,255,.86);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- layout two column ---------- */
.layout-row{--bs-gutter-x:32px;}
.toc-card{
  position:sticky;top:100px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.toc-title{
  font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.toc-list a{
  display:block;padding:11px 14px;margin-bottom:4px;border-radius:10px;
  font-size:15px;color:var(--text-2);border-left:2px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{background:var(--bg-alt);color:var(--text);}
.toc-list a.current{
  color:var(--brand);font-weight:600;background:var(--brand-soft);border-left-color:var(--brand);
}
.toc-foot{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.7;color:var(--text-3);
}

/* ---------- insight cards ---------- */
.insight-card{
  display:grid;grid-template-columns:196px minmax(0,1fr);gap:20px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;margin-bottom:20px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.insight-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD6CE;}
.thumb{
  aspect-ratio:4/3;overflow:hidden;border-radius:10px;background:var(--bg-alt);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.insight-card:hover .thumb img{transform:scale(1.03);}
.card-body-inner{display:flex;flex-direction:column;padding:4px 4px 4px 0;}
.card-title{font-size:21px;line-height:1.4;font-weight:600;color:var(--text);margin-bottom:8px;}
.card-desc{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:14px;}
.tag-group{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand);
}
.tag.neutral{background:rgba(20,48,42,.08);color:var(--brand-deep);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.card-meta{font-size:13px;color:var(--text-3);}

/* ---------- steps ---------- */
.steps-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  position:relative;padding:28px 24px 26px;border:1px solid var(--line);
  border-radius:var(--r-card);background:var(--bg-alt);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-1);}
.step-num{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;margin-bottom:16px;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.step p{font-size:15px;line-height:1.85;color:var(--text-2);margin:0;}

/* ---------- data band ---------- */
.data-band{
  background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;
}
.data-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;
  border-radius:50%;background:rgba(255,197,61,.08);
}
.data-band .inner{position:relative;z-index:2;}
.data-band h2{font-size:30px;line-height:1.3;color:#fff;max-width:640px;}
.data-band .lead{font-size:16px;line-height:1.85;color:rgba(255,255,255,.74);max-width:640px;margin-top:14px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px;}
.stat{border-top:1px solid rgba(255,255,255,.20);padding-top:18px;}
.stat-num{font-size:34px;font-weight:800;color:var(--accent);line-height:1.2;letter-spacing:-.02em;}
.stat-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:6px;line-height:1.6;}

/* ---------- faq ---------- */
.faq .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq .accordion-item:first-child{border-top:1px solid var(--line);}
.faq .accordion-button{
  background:transparent;box-shadow:none;border:0;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);}
.faq .accordion-button::after{display:none;}
.faq .accordion-button .plus{
  flex-shrink:0;width:20px;height:20px;position:relative;
  transition:transform .22s var(--ease);
}
.faq .accordion-button .plus::before,
.faq .accordion-button .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-3);
  border-radius:2px;transform:translate(-50%,-50%);
}
.faq .accordion-button .plus::before{width:14px;height:2px;}
.faq .accordion-button .plus::after{width:2px;height:14px;}
.faq .accordion-button:not(.collapsed) .plus{transform:rotate(45deg);}
.faq .accordion-button:not(.collapsed) .plus::before,
.faq .accordion-button:not(.collapsed) .plus::after{background:var(--brand);}
.faq .accordion-body{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:64px 0;}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;line-height:1.35;color:#fff;max-width:620px;}
.cta-band p{margin:12px 0 0;font-size:16px;color:rgba(255,255,255,.72);max-width:620px;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:15px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:11px;}
.footer-brand span:last-child{font-size:17px;font-weight:800;color:#fff;}
.site-footer p{line-height:1.85;color:rgba(255,255,255,.68);font-size:14.5px;}
.site-footer h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links li,.footer-contact li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.footer-contact li{color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13.5px;color:rgba(255,255,255,.56);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:42px;}
}
@media (max-width:991.98px){
  :root{--sp-section:64px;}
  .section-head{margin-bottom:32px;}
  .page-hero{padding:132px 0 48px;min-height:300px;}
  .page-hero h1{font-size:36px;}
  .page-hero .hero-sub{font-size:17px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .toc-card{position:static;padding:14px;margin-bottom:24px;}
  .toc-title{padding-left:4px;}
  .toc-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .toc-list a{
    white-space:nowrap;margin-bottom:0;border-left:0;border-bottom:2px solid transparent;
    background:var(--bg-alt);padding:9px 14px;
  }
  .toc-list a.current{border-left:0;border-bottom-color:var(--brand);}
  .toc-foot{display:none;}
  .insight-card{grid-template-columns:1fr;}
  .thumb{aspect-ratio:16/9;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .page-hero h1{font-size:30px;}
  .h1-note{font-size:14px;}
  .section-title{font-size:24px;}
  .data-band h2{font-size:24px;}
  .cta-band h2{font-size:22px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:40px;}
  .stat-num{font-size:28px;}
  .card-title{font-size:19px;}
}
@media (max-width:575.98px){
  :root{--sp-section:48px;}
  .hero-actions .btn{width:100%;}
  .stat-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#E8481F;
  --brand-hover:#CF3D17;
  --brand-tint:rgba(232,72,31,.10);
  --brand-deep:#14302A;
  --accent:#FFC53D;
  --bg:#F6F4F1;
  --card:#FFFFFF;
  --dark:#14181C;
  --ink:#1B1F24;
  --ink-2:#5A636E;
  --ink-3:#8C949E;
  --line:#E6E2DC;
  --ok:#12A67A;
  --warn:#D9822B;
  --err:#D64545;
  --r-card:14px;
  --r-lg:20px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(20,24,28,.04), 0 8px 24px rgba(20,24,28,.06);
  --sh-2:0 12px 32px rgba(20,24,28,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-hover);}
h1,h2,h3,h4{margin:0 0 .5em;color:var(--ink);letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
li{line-height:1.85;margin-bottom:10px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  box-shadow:0 8px 24px rgba(0,0,0,.12);
  transition:background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,24,28,.05), 0 8px 20px rgba(20,24,28,.06);
}
.header-inner{display:flex;align-items:center;gap:16px;height:76px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{color:#fff;}
.is-scrolled .brand{color:var(--ink);}
.is-scrolled .brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(232,72,31,.32);flex:0 0 auto;
}
.main-nav{display:flex;align-items:center;gap:4px;margin:0 auto;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:rgba(255,255,255,.92);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.16);}
.nav-link.active{color:#fff;font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
}
.is-scrolled .nav-link{color:var(--ink-2);}
.is-scrolled .nav-link:hover{color:var(--brand);background:var(--brand-tint);}
.is-scrolled .nav-link.active{color:var(--ink);}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.36);
  background:rgba(255,255,255,.10);color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.22);}
.is-scrolled .icon-btn{color:var(--ink-2);border-color:var(--line);background:#fff;}
.is-scrolled .icon-btn:hover{color:var(--brand);border-color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer;
  padding:9px;color:#fff;
}
.nav-toggle span{
  display:block;height:2px;width:100%;background:currentColor;border-radius:2px;
  transition:transform .22s var(--ease), opacity .22s var(--ease);
}
.nav-toggle span + span{margin-top:6px;}
.is-scrolled .nav-toggle{color:var(--ink);}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}

/* drawer */
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(20,24,28,.44);z-index:1040;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease), visibility .22s var(--ease);
}
.drawer-backdrop.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:1050;
  display:flex;flex-direction:column;padding:92px 20px 24px;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.5);
  box-shadow:-12px 0 32px rgba(20,24,28,.16);
  transform:translateX(100%);transition:transform .24s var(--ease);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 12px;border-radius:10px;
  color:var(--ink);font-size:16px;font-weight:500;border-bottom:1px solid var(--line);
}
.drawer-link:last-of-type{border-bottom:0;}
.drawer-link:hover{background:var(--brand-tint);color:var(--brand);}
.drawer-link.active{color:var(--brand);font-weight:700;}
.drawer-foot{margin-top:auto;padding-top:16px;}

/* ---------- buttons ---------- */
.btn{
  font-family:inherit;font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}
.btn:focus,.btn:focus-visible{box-shadow:none;outline:2px solid var(--accent);outline-offset:2px;}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand);}
.btn-onlight{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.10);}
.btn-onlight:hover{background:rgba(255,255,255,.2);color:#fff;border-color:#fff;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .2s var(--ease);font-size:13px;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- banner ---------- */
.page-banner{
  position:relative;display:flex;align-items:flex-end;min-height:320px;
  padding:140px 0 52px;
  background-image:linear-gradient(92deg, rgba(20,24,28,.90) 0%, rgba(20,24,28,.66) 52%, rgba(20,24,28,.44) 100%), url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;padding:0;list-style:none;}
.crumb li{margin:0;line-height:1.6;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(255,255,255,.45);}
.crumb .current{color:rgba(255,255,255,.95);}
.page-banner h1{color:#fff;max-width:840px;margin-bottom:14px;}
.page-banner .banner-sub{color:rgba(255,255,255,.86);font-size:18px;line-height:1.75;max-width:680px;margin-bottom:26px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0 88px;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-tint);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16.5px;margin:0;}

.lead-copy p{color:var(--ink-2);font-size:16.5px;}
.lead-copy p:last-child{margin-bottom:0;}
.metric-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 18px;margin-top:26px;
  padding-top:22px;border-top:1px solid var(--line);
}
.metric-row .metric{font-size:15px;color:var(--ink-2);display:inline-flex;align-items:center;gap:8px;}
.metric-row .metric i{color:var(--brand);font-size:13px;}
.metric-row .bar{width:1px;height:16px;background:var(--line);}
.media-frame{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line);background:#fff;aspect-ratio:4/3;}
.media-frame img{width:100%;height:100%;object-fit:cover;}

/* timeline */
.timeline{position:relative;list-style:none;margin:0;padding:0;}
.timeline::before{content:"";position:absolute;left:31px;top:14px;bottom:14px;width:2px;background:var(--line);}
.tl-item{position:relative;padding-left:104px;margin-bottom:40px;}
.tl-item:last-child{margin-bottom:0;}
.tl-index{
  position:absolute;left:0;top:0;width:64px;height:64px;border-radius:999px;
  border:2px solid var(--brand);background:#fff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 6px 18px rgba(232,72,31,.14);
}
.tl-body{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--sh-1);transition:transform .22s var(--ease), box-shadow .22s var(--ease);}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.tl-body h3{margin-bottom:8px;}
.tl-body > p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px;}
.check-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 22px;}
.check-list li{display:flex;align-items:flex-start;gap:8px;font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.8;}
.check-list i{color:var(--ok);font-size:13px;margin-top:7px;}

/* guarantee dark band */
.guarantee{
  background-color:var(--brand-deep);
  background-image:linear-gradient(rgba(20,48,42,.94), rgba(20,48,42,.96)), url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  color:#fff;
}
.guarantee-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:start;}
.guarantee h2{color:#fff;}
.guarantee .eyebrow{background:rgba(255,197,61,.16);color:var(--accent);}
.guarantee p{color:rgba(255,255,255,.78);}
.g-list{list-style:none;padding:0;margin:0;display:grid;gap:18px;}
.g-list li{
  margin:0;padding:18px 20px;border-radius:var(--r-card);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.g-list strong{display:block;color:#fff;font-size:16.5px;font-weight:600;margin-bottom:4px;}
.g-list span{color:rgba(255,255,255,.76);font-size:14.5px;line-height:1.8;}
.g-list i{color:var(--accent);margin-right:8px;font-size:14px;}
.guarantee-cta{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}

/* faq */
.faq-wrap{max-width:860px;}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-accordion .accordion-button{
  position:relative;background:transparent;box-shadow:none;border:0;
  font-family:inherit;font-size:17px;font-weight:600;color:var(--ink);
  padding:22px 46px 22px 0;text-align:left;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button::after{display:none;}
.faq-accordion .accordion-button::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--ink-3);transition:transform .22s var(--ease), color .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg);color:var(--brand);}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.faq-accordion .accordion-body{padding:0 46px 24px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}

/* cta band */
.cta-band{background:var(--dark);color:#fff;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:36px;align-items:center;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.74);margin:0;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-note{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:18px;font-size:14px;color:rgba(255,255,255,.6);}

/* footer */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:64px 0 28px;font-size:15px;}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;margin-bottom:14px;}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-mark{background:var(--brand);}
.site-footer p{color:rgba(255,255,255,.72);line-height:1.85;margin-bottom:0;}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s var(--ease), border-color .2s var(--ease);}
.footer-links a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.footer-contact li{margin-bottom:10px;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
}
.footer-bottom p{font-size:13.5px;color:rgba(255,255,255,.6);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:100%;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn{display:none;}
  .section{padding:64px 0;}
  .guarantee-grid{grid-template-columns:1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .page-banner{padding:120px 0 44px;min-height:280px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .tl-item{padding-left:84px;}
  .tl-index{width:56px;height:56px;font-size:15px;}
  .timeline::before{left:27px;}
  .tl-body{padding:20px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .brand{font-size:16px;}
  .brand-mark{width:30px;height:30px;font-size:12px;border-radius:9px;}
  .page-banner{padding:112px 0 40px;min-height:260px;}
  .banner-actions .btn{width:100%;}
  .tl-item{padding-left:64px;margin-bottom:28px;}
  .tl-index{width:40px;height:40px;font-size:13px;}
  .timeline::before{left:19px;}
  .check-list{flex-direction:column;gap:6px;}
  .g-list li{padding:16px;}
  .metric-row .bar{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}