/* roulang page: index */
:root{
  --ink:#15332E;
  --ink-deep:#0C221F;
  --teal:#3E7F73;
  --dawn:#D9663A;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --line:#E2E1DB;
  --text:#232825;
  --muted:#6E7671;
  --white:#F6F5F1;
  --grey-mark:#C9CBC6;

  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-img:16px;

  --shadow-1:0 1px 2px rgba(12,34,31,.06);
  --shadow-2:0 12px 32px -12px rgba(12,34,31,.18);

  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:160ms;
  --t-mid:240ms;
  --t-slow:320ms;

  --sidebar-w:264px;
  --sidebar-w-narrow:88px;
  --content-max:1120px;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--teal);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:600;letter-spacing:-.01em;}
h1{font-size:clamp(34px,4.6vw,60px);line-height:1.08;}
h2{font-size:clamp(24px,2.6vw,30px);line-height:1.25;}
h3{font-size:22px;line-height:1.4;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);color:var(--white);
  display:flex;flex-direction:column;
  padding:26px 20px 20px;
  z-index:60;
  transition:width var(--t-mid) var(--ease);
  overflow:hidden;
}
.sidebar::-webkit-scrollbar{width:0;}
.brand{display:flex;align-items:center;gap:12px;padding-bottom:22px;border-bottom:1px solid rgba(246,245,241,.14);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--teal),var(--ink-deep));
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(246,245,241,.22);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.01em;white-space:nowrap;color:var(--white);}
.brand-sub{display:block;font-family:var(--font-sans);font-size:11px;font-weight:400;letter-spacing:.14em;color:rgba(246,245,241,.55);margin-top:2px;}

.side-nav{margin-top:26px;display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 12px;border-radius:10px;
  color:rgba(246,245,241,.82);font-size:15px;line-height:1.4;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.side-nav a .nav-ico{width:18px;height:18px;flex:0 0 18px;opacity:.85;}
.side-nav a .nav-label{white-space:nowrap;}
.side-nav a::before{
  content:"";position:absolute;left:-20px;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--dawn);border-radius:0 3px 3px 0;
  transition:height var(--t-mid) var(--ease);
}
.side-nav a:hover{background:rgba(246,245,241,.08);color:var(--white);}
.side-nav a.active{background:rgba(246,245,241,.10);color:var(--white);}
.side-nav a.active::before{height:22px;}
.side-nav a.active .nav-ico{opacity:1;color:var(--dawn);}

.side-cta{margin-top:auto;padding-top:24px;}
.side-cta .btn{width:100%;}
.side-cta .tip{font-size:12.5px;line-height:1.7;color:rgba(246,245,241,.58);margin:12px 0 0;}
.side-foot{margin-top:20px;padding-top:16px;border-top:1px solid rgba(246,245,241,.14);font-size:12.5px;line-height:1.9;color:rgba(246,245,241,.5);}
.side-foot span{display:block;white-space:nowrap;}

/* 窄侧栏状态 1024-1279 */
@media (min-width:1024px) and (max-width:1279px){
  .sidebar{width:var(--sidebar-w-narrow);padding:22px 16px;}
  .sidebar:hover{width:var(--sidebar-w);box-shadow:var(--shadow-2);}
  .brand-text,.brand-sub,.nav-label,.side-cta .tip{opacity:0;pointer-events:none;transition:opacity var(--t-fast) var(--ease);}
  .sidebar:hover .brand-text,
  .sidebar:hover .brand-sub,
  .sidebar:hover .nav-label,
  .sidebar:hover .side-cta .tip{opacity:1;pointer-events:auto;}
  .side-nav a{justify-content:center;}
  .sidebar:hover .side-nav a{justify-content:flex-start;}
  .side-cta .btn .btn-txt{display:none;}
  .sidebar:hover .side-cta .btn .btn-txt{display:inline;}
}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:var(--ink);color:var(--white);
  align-items:center;justify-content:space-between;padding:0 16px;
  box-shadow:0 1px 2px rgba(12,34,31,.2);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--white);}
.topbar-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:9px;}
.hamb{background:transparent;border:1px solid rgba(246,245,241,.3);border-radius:9px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--white);cursor:pointer;transition:background var(--t-fast) var(--ease);}
.hamb:hover{background:rgba(246,245,241,.12);}
.hamb svg{width:18px;height:18px;}

.overlay{position:fixed;inset:0;background:rgba(12,34,31,.52);opacity:0;visibility:hidden;transition:opacity var(--t-mid) var(--ease),visibility var(--t-mid);z-index:80;}
.overlay.open{opacity:1;visibility:visible;}

.drawer{
  position:fixed;top:0;left:0;bottom:0;width:288px;max-width:86vw;z-index:90;
  background:var(--ink);color:var(--white);padding:24px 20px;
  transform:translateX(-102%);transition:transform var(--t-slow) var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer .brand{border-bottom:1px solid rgba(246,245,241,.14);}
.drawer-close{margin-left:auto;background:transparent;border:none;color:rgba(246,245,241,.7);cursor:pointer;font-size:22px;line-height:1;padding:4px 6px;border-radius:6px;}
.drawer-close:hover{color:var(--white);background:rgba(246,245,241,.1);}

/* ============ 主内容区 ============ */
.page-body{padding-left:var(--sidebar-w);}
@media (min-width:1024px) and (max-width:1279px){
  .page-body{padding-left:var(--sidebar-w-narrow);}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .page-body{padding-left:0;padding-top:64px;}
}

.container{max-width:var(--content-max);margin:0 auto;padding:0 32px;}
@media (max-width:767px){.container{padding:0 20px;}}

main{display:block;}
section{padding:96px 0;}
@media (max-width:1439px){section{padding:80px 0;}}
@media (max-width:1279px){section{padding:80px 0;}}
@media (max-width:1023px){section{padding:64px 0;}}
@media (max-width:767px){section{padding:48px 0;}}

.section-head{max-width:720px;margin-bottom:44px;}
.section-kicker{
  display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--teal);
  font-weight:600;margin-bottom:14px;text-transform:uppercase;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;font-family:var(--font-sans);
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-xs{height:32px;padding:0 14px;font-size:13.5px;border-radius:8px;}

.btn-primary{background:var(--ink);color:var(--white);}
.btn-primary:hover{background:#0F2723;color:var(--white);box-shadow:inset 0 0 0 1px rgba(246,245,241,.28);}

.btn-accent{background:var(--dawn);color:#FFF6F1;}
.btn-accent:hover{background:#C25730;color:#FFF6F1;box-shadow:inset 0 0 0 1px rgba(255,246,241,.34);}

.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{color:var(--ink);border-color:var(--teal);box-shadow:inset 0 0 0 1px rgba(62,127,115,.3);background:rgba(62,127,115,.05);}

.btn-ghost{background:transparent;color:var(--ink);padding:0 6px;height:auto;border:none;border-radius:0;}
.btn-ghost:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}

.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--bg);color:var(--ink);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.6;
  border:1px solid var(--line);
}
.badge-teal{background:rgba(62,127,115,.1);color:var(--teal);border-color:rgba(62,127,115,.22);}
.badge-rec{background:var(--dawn);color:#FFF6F1;border-color:transparent;font-size:11.5px;padding:3px 10px;letter-spacing:.08em;}
.badge-lock{background:rgba(246,245,241,.16);color:var(--white);border-color:rgba(246,245,241,.3);}

/* ============ Hero ============ */
.hero{padding-top:84px;padding-bottom:80px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:64px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.14em;color:var(--teal);font-weight:600;
  margin-bottom:22px;
}
.hero-eyebrow::before{content:"";width:28px;height:1px;background:var(--teal);}
.hero h1{margin-bottom:22px;}
.hero h1 .line{display:block;animation:riseIn 620ms var(--ease) both;}
.hero h1 .line:nth-child(1){animation-delay:60ms;}
.hero h1 .line:nth-child(2){animation-delay:120ms;}
.hero h1 .line:nth-child(3){animation-delay:180ms;}
@keyframes riseIn{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.hero-sub{font-size:18px;line-height:1.85;color:var(--muted);max-width:520px;margin-bottom:34px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:44px;padding-top:30px;border-top:1px solid var(--line);}
.hero-stat strong{display:block;font-family:var(--font-serif);font-size:30px;line-height:1.2;color:var(--ink);font-variant-numeric:tabular-nums;}
.hero-stat span{font-size:13.5px;color:var(--muted);letter-spacing:.02em;}

.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:18px;box-shadow:var(--shadow-2);}
.float-card{
  position:absolute;left:-28px;bottom:38px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-2);min-width:212px;
  animation:floatY 6s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(-6px);}50%{transform:translateY(6px);}}
.float-card h4{font-size:14px;letter-spacing:.08em;color:var(--muted);font-family:var(--font-sans);font-weight:600;margin-bottom:10px;}
.float-row{display:flex;align-items:center;justify-content:space-between;font-size:14px;padding:7px 0;border-top:1px solid var(--line);}
.float-row:first-of-type{border-top:none;}
.float-row b{font-variant-numeric:tabular-nums;color:var(--ink);}
.float-row .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block;margin-right:8px;}
.float-row.rec .dot{background:var(--dawn);}

@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-sub{max-width:none;}
  .hero-visual img{aspect-ratio:1/1;max-height:44vh;width:100%;}
  .float-card{left:auto;right:16px;bottom:-18px;}
}
@media (max-width:767px){
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:28px;}
  .hero-stat strong{font-size:25px;}
  .float-card{position:static;margin-top:20px;animation:none;min-width:0;}
}

/* ============ 数据带 ============ */
.stats-band{background:var(--ink);color:var(--white);padding:56px 0;}
.stats-band .band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.band-item{border-left:1px solid rgba(246,245,241,.18);padding-left:22px;}
.band-item strong{display:block;font-family:var(--font-serif);font-size:34px;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--white);}
.band-item span{display:block;font-size:13.5px;color:rgba(246,245,241,.68);margin-top:6px;}
@media (max-width:1023px){.stats-band .band-grid{grid-template-columns:repeat(2,1fr);gap:28px;}}
@media (max-width:520px){.stats-band .band-grid{grid-template-columns:1fr;gap:22px;}}

/* ============ 对比表 ============ */
.compare-wrap{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);overflow:hidden;box-shadow:var(--shadow-1);}
table.compare{width:100%;border-collapse:collapse;font-size:15px;}
table.compare thead th{
  position:sticky;top:0;z-index:3;
  background:var(--bg);color:var(--ink);
  font-family:var(--font-sans);font-weight:700;font-size:15px;
  text-align:center;padding:18px 14px;border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.compare thead th.th-feature{text-align:left;padding-left:24px;color:var(--muted);font-weight:600;}
table.compare thead th .th-sub{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-top:3px;font-variant-numeric:tabular-nums;}
table.compare thead th.th-featured{background:rgba(62,127,115,.09);border-left:1px solid rgba(62,127,115,.3);border-right:1px solid rgba(62,127,115,.3);}
table.compare tbody td{padding:0 14px;height:56px;text-align:center;border-bottom:1px solid var(--line);color:var(--text);}
table.compare tbody tr:last-child td{border-bottom:none;}
table.compare tbody td.td-name{text-align:left;padding-left:24px;font-weight:600;color:var(--ink);}
table.compare tbody td.td-featured{background:rgba(62,127,115,.05);border-left:1px solid rgba(62,127,115,.3);border-right:1px solid rgba(62,127,115,.3);}
table.compare tbody tr:hover td{background:var(--bg);}
table.compare tbody tr:hover td.td-featured{background:rgba(62,127,115,.1);}
.mark-yes{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:rgba(62,127,115,.12);color:var(--teal);font-size:13px;font-weight:700;}
.mark-no{display:inline-block;width:14px;height:2px;background:var(--grey-mark);border-radius:2px;vertical-align:middle;}
.cell-num{font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink);}
.cell-text{font-size:14px;color:var(--muted);}
.rec-flag{display:block;margin-bottom:6px;}

.compare-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:24px;}
.compare-foot p{margin:0;color:var(--muted);font-size:14px;}

/* 移动端对比卡片 */
.compare-cards{display:none;gap:16px;flex-direction:column;}
.cc-card{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card);padding:20px;}
.cc-card.featured{border-color:var(--teal);box-shadow:var(--shadow-2);}
.cc-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px;}
.cc-head h3{font-size:19px;}
.cc-head .price{font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink);font-size:16px;}
.cc-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0;font-size:14.5px;border-bottom:1px dashed var(--line);}
.cc-row:last-child{border-bottom:none;}
.cc-row span:first-child{color:var(--muted);}
.cc-row span:last-child{text-align:right;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
@media (max-width:767px){
  .compare-wrap{display:none;}
  .compare-cards{display:flex;}
}

/* ============ 等级亮点 ============ */
.levels{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.levels-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start;}
.level-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 26px;transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.level-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(62,127,115,.45);}
.level-card.lift{margin-top:-16px;background:var(--card);border-color:var(--teal);box-shadow:var(--shadow-2);}
.level-no{font-family:var(--font-serif);font-size:48px;line-height:1;color:var(--dawn);font-weight:700;letter-spacing:-.02em;display:block;margin-bottom:14px;}
.level-card h3{margin-bottom:6px;}
.level-price{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:20px;display:block;}
.level-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--text);margin-bottom:9px;}
.level-list li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--teal);}
.level-card .btn{margin-top:22px;width:100%;}
@media (max-width:1023px){
  .levels-grid{grid-template-columns:1fr;}
  .level-card.lift{margin-top:0;}
}

/* ============ 锁卡 ============ */
.locks-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:1279px){.locks-grid{grid-template-columns:repeat(3,1fr);}}
@media (max-width:1023px){.locks-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.locks-grid{grid-template-columns:1fr;}}

.lock-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.lock-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(62,127,115,.45);}
.lock-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink-deep);}
.lock-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow) var(--ease);}
.lock-card:hover .lock-media img{transform:scale(1.04);}
.lock-mask{
  position:absolute;inset:0;background:rgba(12,34,31,.55);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:var(--white);transition:background var(--t-mid) var(--ease);
}
.lock-card:hover .lock-mask{background:rgba(12,34,31,.45);}
.lock-mask svg{width:22px;height:22px;}
.lock-mask .lock-txt{font-size:13px;letter-spacing:.06em;}
.lock-hint{
  font-size:12.5px;color:var(--dawn);letter-spacing:.04em;
  opacity:0;transform:translateY(4px);transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.lock-card:hover .lock-hint{opacity:1;transform:translateY(0);}
.lock-body{padding:20px;}
.lock-body .badge{margin-bottom:12px;}
.lock-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.lock-meta{font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;}

/* ============ 最新信息 ============ */
.news{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.news-head{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:space-between;margin-bottom:34px;}
.news-head .section-head{margin-bottom:0;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
@media (max-width:1279px){.news-grid{grid-template-columns:1fr;}}
@media (max-width:767px){.news-grid{grid-template-columns:1fr;}}

.news-card{
  display:grid;grid-template-columns:150px 1fr;gap:18px;
  padding:18px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color var(--t-mid) var(--ease),background var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.news-card:hover{border-color:rgba(62,127,115,.45);background:var(--card);transform:translateY(-2px);}
.news-cover{border-radius:12px;overflow:hidden;background:var(--line);aspect-ratio:16/10;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-body{min-width:0;display:flex;flex-direction:column;}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
@media (max-width:520px){
  .news-card{grid-template-columns:1fr;}
  .news-cover{aspect-ratio:16/9;}
}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--bg);text-align:center;
}
.empty-state svg{width:38px;height:38px;color:var(--grey-mark);}
.empty-state strong{font-family:var(--font-serif);font-size:18px;color:var(--ink);}
.empty-state p{margin:0;font-size:14px;color:var(--muted);}
.skeleton{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:18px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg);}
.skeleton .sk-img{aspect-ratio:16/10;border-radius:12px;background:linear-gradient(90deg,var(--line),#EFEEE9,var(--line));background-size:200% 100%;animation:shimmer 1.4s linear infinite;}
.skeleton .sk-line{height:14px;border-radius:6px;background:linear-gradient(90deg,var(--line),#EFEEE9,var(--line));background-size:200% 100%;animation:shimmer 1.4s linear infinite;margin-bottom:12px;}
.skeleton .sk-line.short{width:56%;}
@keyframes shimmer{from{background-position:200% 0;}to{background-position:-200% 0;}}

/* ============ 反馈摘录 ============ */
.quotes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.quote-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;}
.quote-card .q-mark{font-family:var(--font-serif);font-size:40px;line-height:1;color:var(--teal);opacity:.45;}
.quote-card p{font-size:15px;line-height:1.85;color:var(--text);margin:10px 0 20px;}
.quote-who{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;}
.quote-avatar{width:32px;height:32px;border-radius:50%;background:var(--ink);color:var(--white);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:0 0 32px;}
.rating{display:flex;gap:3px;color:var(--dawn);font-size:13px;margin-bottom:12px;}
@media (max-width:1023px){.quotes-grid{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-list{max-width:820px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-family:var(--font-serif);font-size:18.5px;font-weight:600;color:var(--ink);
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--teal);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--teal);
  transition:transform 180ms var(--ease),background var(--t-fast) var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:rgba(62,127,115,.1);}
.faq-icon svg{width:13px;height:13px;}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t-slow) var(--ease);}
.faq-a-inner{max-width:720px;padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-item.open .faq-a{max-height:420px;}

/* ============ CTA ============ */
.cta-band{padding:0 0 96px;}
@media (max-width:767px){.cta-band{padding-bottom:48px;}}
.cta-box{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid var(--ink);border-radius:20px;
  padding:56px 52px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
  box-shadow:var(--shadow-1);
}
.cta-box h2{margin-bottom:12px;}
.cta-box p{color:var(--muted);margin:0 0 26px;max-width:560px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-art{width:190px;height:190px;flex:0 0 190px;opacity:.9;}
@media (max-width:1023px){
  .cta-box{grid-template-columns:1fr;padding:38px 26px;}
  .cta-art{display:none;}
}
@media (max-width:767px){.cta-actions .btn{width:100%;}}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink-deep);color:rgba(246,245,241,.72);padding:72px 0 32px;font-size:13.5px;line-height:1.9;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(246,245,241,.14);}
.foot-brand .brand{margin-bottom:18px;border-bottom:none;padding-bottom:0;}
.foot-brand p{color:rgba(246,245,241,.62);font-size:13.5px;max-width:300px;margin:0;}
.foot-col h4{font-family:var(--font-sans);font-size:13px;letter-spacing:.14em;color:rgba(246,245,241,.5);font-weight:600;margin-bottom:16px;}
.foot-col li{margin-bottom:10px;}
.foot-col a{color:rgba(246,245,241,.78);}
.foot-col a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}
.foot-col address{font-style:normal;color:rgba(246,245,241,.7);}
.foot-bottom{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;padding-top:26px;color:rgba(246,245,241,.5);font-size:13px;}
.foot-bottom .domain{font-variant-numeric:tabular-nums;}
@media (max-width:1023px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr;}}

/* ============ 表单 / 状态示例 ============ */
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:600;}
.field input,.field textarea{
  width:100%;padding:12px 14px;font-family:inherit;font-size:15px;color:var(--text);
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-input);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 2px rgba(62,127,115,.2);}
.field.error input{border-color:var(--dawn);}
.field .err-msg{display:block;font-size:13px;color:var(--dawn);margin-top:7px;}

/* 无障碍与动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* roulang page: article */
:root{
  --ink:#15332E;
  --ink-deep:#0C221F;
  --cloud:#3E7F73;
  --dawn:#D9663A;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --line:#E2E1DB;
  --text:#232825;
  --muted:#6E7671;
  --white:#F6F5F1;
  --dim:#C9CBC6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(12,34,31,.06);
  --sh-2:0 12px 32px -12px rgba(12,34,31,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --shell:264px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-style:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
address{font-style:normal}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--cloud);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--white);padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}

/* ---------- shell 侧栏 ---------- */
.shell{
  position:fixed;left:0;top:0;bottom:0;width:var(--shell);
  background:var(--ink);color:var(--white);
  padding:26px 20px 22px;display:flex;flex-direction:column;gap:24px;
  z-index:80;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;
  background:rgba(246,245,241,.1);border:1px solid rgba(246,245,241,.18);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-family:var(--serif);font-size:16px;font-weight:700;line-height:1.3}
.side-nav{margin-top:8px;display:flex;flex-direction:column;gap:4px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;font-size:15px;
  color:rgba(246,245,241,.72);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:0;border-radius:2px;
  background:var(--dawn);transform:translateY(-50%);transition:height .22s var(--ease);
}
.side-nav a:hover{background:rgba(246,245,241,.08);color:var(--white);transform:translateX(2px)}
.side-nav a.active{background:rgba(246,245,241,.1);color:var(--white)}
.side-nav a.active::before{height:20px}
.nav-ico{width:19px;height:19px;flex:none}
.nav-label{white-space:nowrap}
.shell-cta{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.shell-note{font-size:12.5px;line-height:1.7;color:rgba(246,245,241,.55)}
.shell-foot{border-top:1px solid rgba(246,245,241,.14);padding-top:16px;font-size:12.5px;line-height:1.8;color:rgba(246,245,241,.5)}
.shell-foot .domain{font-variant-numeric:tabular-nums}

/* ---------- 顶部栏（移动） ---------- */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:64px;z-index:110;
  background:var(--ink);color:var(--white);align-items:center;justify-content:space-between;
  padding:0 16px;box-shadow:0 2px 12px -6px rgba(12,34,31,.5);
}
.burger{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(246,245,241,.22);
  background:transparent;display:grid;place-items:center;cursor:pointer;
  transition:background .2s var(--ease);
}
.burger:hover{background:rgba(246,245,241,.1)}
.burger span{display:block;width:17px;height:2px;background:var(--white);border-radius:2px;margin:2.5px 0}
.topbar .brand-text{font-size:15px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,34,31,.52);opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:115;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 主体 ---------- */
.main-wrap{margin-left:var(--shell);display:flex;flex-direction:column;min-height:100vh}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 40px}
main{flex:1 0 auto;padding:56px 0 88px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--white)}
.btn-primary:hover{background:#0e2723;box-shadow:inset 0 0 0 1px rgba(246,245,241,.22)}
.btn-accent{background:var(--dawn);color:#fff}
.btn-accent:hover{background:#c85a31;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28)}
.btn-secondary{background:transparent;color:var(--ink);border-color:rgba(21,51,46,.28)}
.btn-secondary:hover{border-color:var(--cloud);color:var(--cloud)}
.btn-ghost{background:transparent;color:var(--ink);padding:0 4px;height:auto}
.btn-ghost:hover{color:var(--cloud);text-decoration:underline}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-block+.shell-note{margin-top:2px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.01em;
  background:#EDF1EE;color:var(--ink);
}
.badge-accent{background:rgba(217,102,58,.12);color:#B24E28}
.badge-dim{background:#EFEFEC;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12.5px;color:var(--muted);border:1px solid var(--line);background:var(--card);
}

/* ---------- 面包屑 / 页头 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);
  margin-bottom:22px;flex-wrap:nowrap;overflow:hidden;
}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--cloud);text-decoration:underline}
.crumb .sep{color:var(--dim)}
.crumb .cur{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:46ch;color:var(--text)}
.page-head h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.22;letter-spacing:-.015em;
  max-width:22ch;margin-bottom:18px;
}
.meta-row{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--dim);display:inline-block}
.meta-row .num{font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink)}
.head-rule{height:1px;background:var(--line);margin:26px 0 34px;border:0}

.art-cover{margin:0 0 40px;border-radius:var(--r-img);overflow:hidden;background:#EDEDE8}
.art-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.prose{max-width:760px;font-size:17px;line-height:1.9}
.prose p{margin:0 0 20px}
.prose h2{font-size:22px;line-height:1.4;margin:44px 0 14px}
.prose h3{font-size:19px;line-height:1.45;margin:32px 0 12px}
.prose h4{font-size:17px;margin:24px 0 10px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 20px}
.prose li{margin:8px 0}
.prose blockquote{
  margin:26px 0;padding:16px 20px;background:var(--card);
  border-left:3px solid var(--cloud);border-radius:0 10px 10px 0;color:#39423E;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:12px;margin:8px 0}
.prose figure{margin:26px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.prose table{width:100%;font-size:15px;border:1px solid var(--line);margin:24px 0;border-radius:10px;overflow:hidden}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.prose th{background:var(--bg);font-weight:700;color:var(--ink)}
.prose a{color:var(--cloud);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--ink)}
.prose hr{border:0;height:1px;background:var(--line);margin:36px 0}
.prose code{background:#EDEDE8;border-radius:5px;padding:2px 6px;font-size:14.5px}

/* ---------- 侧栏 ---------- */
.aside{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.aside-card h2{font-size:15px;letter-spacing:.04em;margin-bottom:14px}
.info-list{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted)}
.info-list li{display:flex;justify-content:space-between;gap:12px}
.info-list b{color:var(--ink);font-weight:600}
.aside-locked{
  position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--ink);color:var(--white);padding:22px;box-shadow:var(--sh-1);
}
.aside-locked::after{
  content:"";position:absolute;inset:0;background:rgba(12,34,31,.45);
  opacity:1;transition:opacity .24s var(--ease);pointer-events:none;
}
.aside-locked:hover::after{opacity:.35}
.aside-locked h2{color:var(--white);font-size:16px;margin-bottom:8px}
.aside-locked p{font-size:13.5px;line-height:1.8;color:rgba(246,245,241,.78);margin-bottom:14px}
.lock-hint{font-size:12.5px;color:var(--dawn);letter-spacing:.02em}
.rec-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.rec-list a{display:flex;gap:12px;align-items:flex-start;border-radius:10px;padding:6px;transition:background .2s var(--ease)}
.rec-list a:hover{background:#F2F1EC}
.rec-list img{width:64px;height:64px;object-fit:cover;border-radius:10px;flex:none}
.rec-t{font-size:14px;line-height:1.6;color:var(--ink);font-weight:600;margin-bottom:4px}
.rec-s{font-size:12.5px;color:var(--muted)}

/* ---------- 相关推荐 ---------- */
.section{margin-top:72px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{font-size:24px}
.section-head span{font-size:13.5px;color:var(--muted)}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rec-card{
  background:var(--card);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),border-color .22s var(--ease);
}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(62,127,115,.5);box-shadow:var(--sh-2)}
.rec-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rec-body{padding:18px 20px 22px}
.rec-body h3{font-size:16.5px;line-height:1.5;margin:10px 0 8px}
.rec-body p{font-size:13.5px;color:var(--muted);line-height:1.75}
.rec-body .rec-s{margin-top:12px}

/* ---------- 返回按钮组 ---------- */
.return-bar{
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
}
.pager{display:flex;gap:20px;margin-top:22px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.pager a{color:var(--muted);transition:color .2s var(--ease)}
.pager a:hover{color:var(--cloud)}

/* ---------- 空态 / 骨架 ---------- */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 30px;box-shadow:var(--sh-1);max-width:760px;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}
.skel-lines{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.skel-lines span{display:block;height:12px;border-radius:6px;background:linear-gradient(90deg,#EDEDE8,#E1E1DA,#EDEDE8);background-size:200% 100%;animation:skel 1.6s linear infinite}
.skel-lines span:nth-child(1){width:92%}
.skel-lines span:nth-child(2){width:78%}
.skel-lines span:nth-child(3){width:56%}
@keyframes skel{0%{background-position:0 0}100%{background-position:-200% 0}}
.err-note{margin-top:14px;font-size:14px;color:var(--dawn)}

/* ---------- footer ---------- */
.site-foot{background:var(--ink-deep);color:rgba(246,245,241,.72);padding:64px 0 28px;font-size:14px;line-height:1.9}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
.site-foot .brand-mark{background:rgba(246,245,241,.08);border:1px solid rgba(246,245,241,.16)}
.foot-brand p{color:rgba(246,245,241,.6);font-size:13.5px;max-width:330px;margin-top:14px}
.foot-col h4{color:var(--white);font-size:14px;letter-spacing:.06em;margin-bottom:12px}
.foot-col ul{list-style:none}
.foot-col li{margin:7px 0}
.foot-col a{color:rgba(246,245,241,.7);transition:color .2s var(--ease)}
.foot-col a:hover{color:var(--cloud);text-decoration:underline}
.foot-col address{color:rgba(246,245,241,.62);font-size:13.5px}
.foot-bottom{
  margin-top:44px;border-top:1px solid rgba(246,245,241,.14);padding-top:18px;
  display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between;
  font-size:13px;color:rgba(246,245,241,.5);
}
.foot-bottom .domain{font-variant-numeric:tabular-nums}

/* ---------- 动效 ---------- */
.fade{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.fade.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .fade{opacity:1;transform:none}
}

/* ---------- 断点 ---------- */
@media (min-width:1280px){
  .main-wrap{margin-left:var(--shell)}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--shell:88px}
  .main-wrap{margin-left:88px}
  .shell{padding:22px 12px;align-items:center}
  .shell .brand{justify-content:center}
  .brand-text{display:none}
  .side-nav{width:100%}
  .side-nav a{justify-content:center;padding:12px 0}
  .nav-label{display:none;position:absolute;left:74px;top:50%;transform:translateY(-50%);background:var(--ink-deep);color:var(--white);padding:6px 12px;border-radius:8px;font-size:13px;box-shadow:0 10px 26px -10px rgba(12,34,31,.6);z-index:90}
  .side-nav a:hover .nav-label{display:block}
  .shell-cta{width:100%}
  .shell-cta .btn{font-size:13px;padding:0 6px}
  .shell-note,.shell-foot{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
}
@media (max-width:1279px) and (min-width:1024px){
  .rec-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .shell{
    width:280px;padding:24px 20px;transform:translateX(-100%);
    transition:transform .3s var(--ease);z-index:120;
  }
  .shell.open{transform:none}
  .main-wrap{margin-left:0;padding-top:64px}
  main{padding:36px 0 64px}
  .container{padding:0 22px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .aside{position:static}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{margin-top:52px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .art-cover img{aspect-ratio:16/9}
}
@media (max-width:768px){
  body{font-size:16px}
  .page-head h1{font-size:26px;max-width:none}
  .crumb{font-size:12.5px}
  .crumb .cur{max-width:20ch}
  .rec-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column;gap:8px}
  .btn{height:46px}
  .prose h2{font-size:20px;margin-top:36px}
  .prose h3{font-size:18px}
  .empty-state{padding:26px 20px}
  .meta-row{gap:10px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .main-wrap{padding-top:60px}
  .topbar{height:60px}
  .btn{padding:0 16px;font-size:14.5px}
  .art-cover img{aspect-ratio:4/3}
  .aside-card,.aside-locked{padding:18px}
  .return-bar{gap:10px}
  .return-bar .btn{width:100%}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink:#15332E;
  --ink-deep:#0C221F;
  --cyan:#3E7F73;
  --accent:#D9663A;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --line:#E2E1DB;
  --text:#232825;
  --muted:#6E7671;
  --mute-line:#C9CBC6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh:0 1px 2px rgba(12,34,31,.06);
  --sh-h:0 12px 32px -12px rgba(12,34,31,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side:264px;
  --gap:96px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  font-weight:400;
}
h1,h2,h3,h4{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  color:var(--ink);
  letter-spacing:-.01em;
  margin:0;
  font-weight:700;
}
h1{font-size:clamp(34px,4.6vw,60px);line-height:1.08}
h2{font-size:30px;line-height:1.25}
h3{font-size:22px;line-height:1.4}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--cyan)}
img{max-width:100%;display:block;border-radius:var(--r-img)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
address{font-style:normal}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.num,.stat-num,.price{font-variant-numeric:tabular-nums}

/* ============ 容器与栅格 ============ */
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 32px}
.app-main{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side);
  z-index:60;
}
.sidebar-inner{
  width:var(--side);
  height:100%;
  background:var(--ink);
  color:#F6F5F1;
  display:flex;
  flex-direction:column;
  padding:28px 20px 22px;
  overflow-y:auto;
  transition:width .28s var(--ease),box-shadow .28s var(--ease);
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  flex:0 0 38px;height:38px;border-radius:12px;
  background:rgba(246,245,241,.10);
  display:grid;place-items:center;
  border:1px solid rgba(246,245,241,.16);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
  font-size:18px;font-weight:700;letter-spacing:.01em;
  white-space:nowrap;color:#F6F5F1;
}
.brand-sub{
  font-size:12.5px;color:rgba(246,245,241,.62);line-height:1.6;
  margin-top:14px;letter-spacing:.04em;
}
.side-nav{margin-top:30px;display:flex;flex-direction:column;gap:4px}
.side-nav a{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;
  color:rgba(246,245,241,.80);
  font-size:15.5px;line-height:1.4;
  border-left:3px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.side-nav a:hover{background:rgba(246,245,241,.08);color:#F6F5F1}
.side-nav a.active{
  color:#F6F5F1;
  border-left-color:var(--accent);
  background:rgba(246,245,241,.10);
}
.nav-ico{width:19px;height:19px;flex:0 0 19px;opacity:.9}
.side-cta{margin-top:auto;padding-top:28px}
.side-note{font-size:12.5px;color:rgba(246,245,241,.60);margin-top:10px;line-height:1.7}
.side-foot{
 margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(246,245,241,.14);
  font-size:12.5px;line-height:1.9;color:rgba(246,245,241,.58);
}
.side-foot .domain{color:rgba(246,245,241,.42);letter-spacing:.06em}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:500;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:#F6F5F1}
.btn-primary:hover{background:#1c433c;color:#F6F5F1;box-shadow:inset 0 0 0 1px rgba(246,245,241,.18)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#c4562c;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:rgba(21,51,46,.06);color:var(--ink)}
.btn-ghost{color:var(--cyan);padding:0 4px;height:auto;border:0}
.btn-ghost:hover{color:var(--ink);text-decoration:underline}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-xs{height:32px;padding:0 14px;font-size:13.5px;border-radius:8px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}

/* ============ 顶部移动栏 + 抽屉 ============ */
.topbar{
  display:none;
  position:fixed;inset:0 0 auto 0;height:64px;z-index:70;
  background:rgba(246,245,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  align-items:center;gap:12px;padding:0 16px;
}
.topbar .brand-text{color:var(--ink);font-size:17px}
.topbar .brand-mark{background:var(--ink);border-color:var(--ink)}
.hamburger{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink);background:#fff;
}
.topbar-spacer{flex:1}
.overlay{
  position:fixed;inset:0;background:rgba(12,34,31,.52);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
  z-index:80;
}
.overlay.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;bottom:0;left:0;width:284px;max-width:86vw;z-index:90;
  background:var(--ink);color:#F6F5F1;padding:24px 20px;
  transform:translateX(-102%);transition:transform .3s var(--ease);
  overflow-y:auto;
}
.drawer.show{transform:translateX(0)}
.drawer .side-nav a{color:rgba(246,245,241,.82)}
.drawer-close{margin-left:auto;color:#F6F5F1;font-size:20px;width:36px;height:36px;border-radius:10px}
.drawer-close:hover{background:rgba(246,245,241,.10)}
.drawer-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  background:var(--ink-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#F6F5F1;
  padding:64px 0 72px;
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(12,34,31,.94) 0%,rgba(12,34,31,.74) 52%,rgba(12,34,31,.46) 100%);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:rgba(246,245,241,.70);margin-bottom:26px;
}
.breadcrumb a{color:rgba(246,245,241,.82);border-bottom:1px solid rgba(246,245,241,.30);padding-bottom:1px}
.breadcrumb a:hover{color:#fff;border-color:#fff}
.breadcrumb .sep{color:rgba(246,245,241,.40)}
.breadcrumb .here{color:#F6F5F1}
.page-head h1{color:#F6F5F1;max-width:14em}
.page-lead{
  max-width:640px;margin-top:22px;
  font-size:17px;line-height:1.9;color:rgba(246,245,241,.84);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.head-tag{
  display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:999px;
  background:rgba(246,245,241,.10);border:1px solid rgba(246,245,241,.22);
  font-size:13.5px;color:rgba(246,245,241,.90);
}
.head-tag i{color:var(--accent);font-size:12px}

/* ============ 板块 ============ */
.sec{padding:var(--gap) 0}
.sec-tight{padding:64px 0}
.sec-alt{background:#EFEEE9}
.sec-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  font-size:13px;letter-spacing:.16em;color:var(--cyan);
  text-transform:uppercase;font-weight:500;margin-bottom:14px;
}
.sec-head h2{margin-bottom:16px}
.sec-desc{color:var(--muted);font-size:16.5px;line-height:1.9}

/* ============ 编号纵列 ============ */
.numbered{position:relative}
.numbered::before{
  content:"";position:absolute;left:47px;top:14px;bottom:34px;width:1px;background:var(--line);
}
.numbered-item{
  display:grid;grid-template-columns:120px 1fr;gap:0 20px;
  padding-bottom:44px;
}
.numbered-item:last-child{padding-bottom:0}
.num{
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
  font-size:44px;font-weight:700;line-height:1;
  color:var(--ink);position:relative;z-index:1;
  background:var(--bg);padding:4px 14px 8px 0;letter-spacing:.02em;
}
.sec-alt .num{background:#EFEEE9}
.numbered-body h3{margin-bottom:12px}
.numbered-body p{color:var(--muted);font-size:16.5px}
.tick-list{margin-top:16px;display:flex;flex-wrap:wrap;gap:10px 22px}
.tick-list li{
  display:flex;align-items:flex-start;gap:9px;
  font-size:15.5px;color:var(--text);
}
.tick{flex:0 0 16px;margin-top:6px;color:var(--cyan)}
.tick.dim{color:var(--mute-line)}

/* ============ 权益对比清单 ============ */
.diff-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);overflow:hidden;box-shadow:var(--sh);
}
.diff-row{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:12px;align-items:center;
  padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.diff-row:last-child{border-bottom:0}
.diff-row:hover{background:#FBFAF7}
.diff-row.is-head{
  background:var(--bg);font-size:15px;font-weight:600;color:var(--ink);
  padding:16px 24px;
}
.diff-row.is-head:hover{background:var(--bg)}
.diff-name{font-size:16px;font-weight:500;color:var(--ink)}
.diff-cell{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--muted)}
.diff-cell .val{color:var(--ink);font-weight:600}
.diff-cell .mark{color:var(--cyan);font-size:15px}
.diff-cell .mark.no{color:var(--mute-line);font-weight:400}
.cell-label{display:none;color:var(--muted);font-size:13.5px}
.col-reco{position:relative}
.is-head .col-reco{color:var(--ink)}
.diff-head-badge{
  display:inline-flex;align-items:center;
  height:22px;padding:0 9px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;margin-left:8px;
  letter-spacing:.02em;
}

/* ============ 适用情形 双列清单 + 配图 ============ */
.scene-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.scene-list{display:flex;flex-direction:column;gap:22px}
.scene-item{
  display:flex;gap:16px;padding:20px 22px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.scene-item:hover{transform:translateY(-2px);border-color:rgba(62,127,115,.34);box-shadow:var(--sh-h)}
.scene-ico{
  flex:0 0 40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:rgba(62,127,115,.10);color:var(--cyan);font-size:16px;
}
.scene-item h3{font-size:18px;margin-bottom:6px}
.scene-item p{font-size:15.5px;color:var(--muted)}
.scene-media{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh)}
.scene-media .tall{grid-row:span 2;aspect-ratio:4/5}
.scene-media .short{aspect-ratio:4/3}

/* ============ 清单 / 证据 ============ */
.evi-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.evi-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.evi-card:hover{box-shadow:var(--sh-h)}
.evi-quote{font-size:17px;line-height:1.9;color:var(--text);
  border-left:3px solid var(--cyan);background:var(--bg);
  padding:14px 18px;border-radius:0 10px 10px 0;
}
.evi-meta{font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:10px}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15.5px;color:var(--muted)}
.check-list .fa-check{color:var(--cyan);margin-top:7px;font-size:13px}
.check-list .fa-minus{color:var(--mute-line);margin-top:7px;font-size:13px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;background:var(--bg);color:var(--ink);
  font-size:13px;border:1px solid var(--line);
}
.badge-accent{background:rgba(217,102,58,.12);border-color:rgba(217,102,58,.28);color:#B14E28}

/* ============ FAQ ============ */
.faq{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:500;color:var(--ink);
  font-family:"Noto Serif SC","Source Han Serif SC",serif;
}
.faq-q:hover{color:var(--cyan)}
.faq-ico{
  flex:0 0 26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--cyan);font-size:12px;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.faq-item.open .faq-ico{transform:rotate(180deg);background:var(--ink);color:#F6F5F1;border-color:var(--ink)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s var(--ease),opacity .24s var(--ease),padding .24s var(--ease);
  opacity:0;
}
.faq-item.open .faq-a{max-height:420px;opacity:1;padding-bottom:22px}
.faq-a p{max-width:720px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ============ CTA ============ */
.cta{
  background:var(--ink);color:#F6F5F1;border-radius:18px;
  padding:48px;display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta h2{color:#F6F5F1;margin-bottom:14px}
.cta p{color:rgba(246,245,241,.78);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta .btn-secondary{color:#F6F5F1;border-color:rgba(246,245,241,.5)}
.cta .btn-secondary:hover{background:rgba(246,245,241,.10);color:#F6F5F1}
.cta-art{display:grid;place-items:center;opacity:.9}
.cta-art svg{width:150px;height:150px}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink-deep);color:rgba(246,245,241,.78);margin-top:16px}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.foot-brand p{font-size:14px;line-height:1.9;color:rgba(246,245,241,.62);margin-top:18px;max-width:300px}
.foot-col h4{
  font-family:"Noto Sans SC","PingFang SC",sans-serif;
  font-size:14px;color:#F6F5F1;margin-bottom:18px;letter-spacing:.08em;font-weight:600;
}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:13.5px;color:rgba(246,245,241,.70)}
.foot-col a:hover{color:var(--cyan);text-decoration:underline}
.foot-col address{font-size:13.5px;line-height:1.95;color:rgba(246,245,241,.62)}
.foot-bottom{
  border-top:1px solid rgba(246,245,241,.14);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:10px 26px;
  font-size:13px;color:rgba(246,245,241,.52);
}
.foot-bottom .domain{letter-spacing:.06em;color:rgba(246,245,241,.40)}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.fade-up.in{opacity:1;transform:none}

/* ============ 断点 1440 ============ */
@media (min-width:1440px){
  :root{--gap:96px}
  .container{max-width:1120px;padding:0 48px}
}
@media (max-width:1439px) and (min-width:1280px){
  :root{--gap:88px}
}

/* ============ 断点 1280 ============ */
@media (max-width:1279px){
  :root{--gap:80px}
  .container{padding:0 36px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .foot-col:last-child{grid-column:span 3}
}

/* ============ 断点 1024：侧栏收窄为图标栏 ============ */
@media (min-width:1024px) and (max-width:1279px){
  :root{--side:88px}
  .sidebar{width:88px}
  .sidebar-inner{width:88px;padding:24px 14px;overflow:hidden}
  .sidebar:hover .sidebar-inner,
  .sidebar:focus-within .sidebar-inner{
    width:264px;padding:28px 20px;box-shadow:24px 0 48px -24px rgba(12,34,31,.55);
  }
  .brand-text,.brand-sub,.side-note,.side-foot,.side-cta .btn span{opacity:0;transition:opacity .2s var(--ease)}
  .sidebar:hover .brand-text,.sidebar:hover .brand-sub,
  .sidebar:hover .side-note,.sidebar:hover .side-foot,
  .sidebar:hover .side-cta .btn span,
  .sidebar:focus-within .brand-text,.sidebar:focus-within .brand-sub,
  .sidebar:focus-within .side-note,.sidebar:focus-within .side-foot{opacity:1}
  .side-cta .btn{padding:0 12px}
  .nav-label{opacity:0;white-space:nowrap;transition:opacity .2s var(--ease)}
  .sidebar:hover .nav-label,.sidebar:focus-within .nav-label{opacity:1}
}

/* ============ 断点 1023：折叠为顶部栏 ============ */
@media (max-width:1023px){
  :root{--side:0px;--gap:64px}
  .sidebar{display:none}
  .topbar{display:flex}
  .app-main{margin-left:0;padding-top:64px}
  .container{padding:0 24px}
  .scene-grid{grid-template-columns:1fr;gap:36px}
  .evi-grid{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr;padding:36px}
  .cta-art{display:none}
  .numbered-item{grid-template-columns:96px 1fr}
  .numbered::before{left:38px}
  .num{font-size:38px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;padding-top:48px}
  .foot-col:last-child{grid-column:span 2}
}

/* ============ 断点 768 ============ */
@media (max-width:768px){
  :root{--gap:48px}
  h2{font-size:25px}
  .page-head{padding:40px 0 48px}
  .page-lead{font-size:16px}
  .sec-head{margin-bottom:32px}
  .diff-row{
    grid-template-columns:1fr;gap:8px;padding:18px 20px;
  }
  .diff-row.is-head{display:none}
  .diff-cell{justify-content:space-between;border-top:1px dashed var(--line);padding-top:8px}
  .diff-cell:first-of-type{border-top:0;padding-top:0}
  .cell-label{display:inline}
  .diff-name{font-size:16.5px;padding-bottom:2px}
  .scene-media{grid-template-columns:1fr;gap:14px}
  .scene-media .tall,.scene-media .short{aspect-ratio:16/10;grid-row:auto}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-col:last-child{grid-column:span 1}
  .foot-bottom{flex-direction:column;gap:8px}
  .cta{padding:28px;border-radius:14px}
  .btn{width:100%}
  .cta-actions .btn,.back-row .btn{width:100%}
  .faq-q{font-size:16px;padding:18px 2px}
}

/* ============ 断点 480 ============ */
@media (max-width:480px){
  .container{padding:0 18px}
  .numbered-item{grid-template-columns:1fr;gap:8px;padding-bottom:34px}
  .numbered::before{display:none}
  .num{font-size:34px;padding:0 0 4px}
  .page-head h1{font-size:30px}
  .head-tag{height:28px;padding:0 11px;font-size:12.5px}
  .scene-item{padding:16px}
  .evi-card{padding:20px}
  .topbar .brand-text{font-size:15.5px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink:#15332E;
  --ink-deep:#0C221F;
  --cloud:#3E7F73;
  --dawn:#D9663A;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --line:#E2E1DB;
  --text:#232825;
  --muted:#6E7671;
  --inv:#F6F5F1;
  --dim:#C9CBC6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh:0 1px 2px rgba(12,34,31,.06);
  --sh-hover:0 12px 32px -12px rgba(12,34,31,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar:264px;
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color 200ms var(--ease);}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cloud);outline-offset:3px;border-radius:6px;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
address{font-style:normal;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section-alt{background:#EFEEE8;}
.sec-head{max-width:720px;margin-bottom:48px;}
.sec-head h2{font-size:30px;line-height:1.25;margin-bottom:14px;}
.sec-head .sec-sub{color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--cloud);
  margin-bottom:14px;
}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar);
  background:var(--ink);
  color:var(--inv);
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:60;
  transition:width 240ms var(--ease),transform 260ms var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;
  background:var(--cloud);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-family:var(--serif);font-size:17px;font-weight:600;letter-spacing:.01em;white-space:nowrap;}
.side-brand{padding:0 6px 22px;border-bottom:1px solid rgba(246,245,241,.14);margin-bottom:22px;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;
  border-radius:var(--r-btn);
  color:rgba(246,245,241,.76);
  font-size:15px;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-nav a:hover{background:rgba(246,245,241,.08);color:#fff;}
.side-nav a.active{background:rgba(246,245,241,.1);color:#fff;}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--dawn);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;}
.nav-label{white-space:nowrap;}
.side-cta{margin-top:auto;padding-top:24px;border-top:1px solid rgba(246,245,241,.14);}
.side-note{margin-top:10px;font-size:12.5px;line-height:1.7;color:rgba(246,245,241,.6);}
.side-foot{margin-top:20px;font-size:12px;line-height:1.8;color:rgba(246,245,241,.5);}
.side-foot .domain{color:rgba(246,245,241,.62);}
.btn-block{width:100%;}

/* ============ 顶栏（移动） ============ */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--ink);color:var(--inv);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;
}
.topbar .brand-text{font-size:16px;}
.topbar .burger{
  width:40px;height:40px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--inv);border:1px solid rgba(246,245,241,.24);
}
.topbar .burger:hover{background:rgba(246,245,241,.1);}
.mask{
  position:fixed;inset:0;background:rgba(12,34,31,.52);
  opacity:0;pointer-events:none;transition:opacity 220ms var(--ease);z-index:55;
}
.mask.show{opacity:1;pointer-events:auto;}

/* ============ 主内容 ============ */
.content{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.main{flex:1;}

/* ============ 页头 Hero ============ */
.page-hero{padding:72px 0 64px;background:linear-gradient(180deg,#F1F0EA 0%,var(--bg) 100%);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.breadcrumb{font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--cloud);text-decoration:underline;}
.breadcrumb .sep{margin:0 8px;color:var(--dim);}
.breadcrumb .cur{color:var(--ink);}
.page-hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.1;margin-bottom:20px;}
.lead{font-size:17px;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line);}
.hero-facts .fact{min-width:120px;}
.hero-facts .fact b{display:block;font-family:var(--serif);font-size:26px;color:var(--ink);font-variant-numeric:tabular-nums;}
.hero-facts .fact span{font-size:13.5px;color:var(--muted);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:18px;box-shadow:var(--sh-hover);
}
.hero-media figcaption{
  margin-top:12px;font-size:13px;color:var(--muted);text-align:center;
}
.hero-tag{
  position:absolute;left:-14px;bottom:26px;
  background:var(--card);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:13px;color:var(--ink);
  box-shadow:var(--sh);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;border:1px solid transparent;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.btn-accent{background:var(--dawn);color:#fff;}
.btn-accent:hover{background:#C45830;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);}
.btn-accent:active{transform:translateY(1px);}
.btn-primary{background:var(--ink);color:var(--inv);}
.btn-primary:hover{background:#0E2621;box-shadow:inset 0 0 0 1px rgba(246,245,241,.24);}
.btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-secondary:hover{background:rgba(21,51,46,.06);border-color:var(--cloud);}
.btn-light{background:var(--inv);color:var(--ink);}
.btn-light:hover{background:#fff;box-shadow:inset 0 0 0 1px rgba(21,51,46,.16);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:#EDF2F0;color:var(--ink);
  font-size:12.5px;letter-spacing:.02em;
}
.badge-dawn{background:rgba(217,102,58,.12);color:#A94A24;}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted);}

/* ============ 大号要点区 ============ */
.points{display:flex;flex-direction:column;}
.point{
  display:grid;grid-template-columns:96px 1fr;gap:32px;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.point:first-child{border-top:1px solid var(--line);}
.point-no{
  font-family:var(--serif);font-size:30px;line-height:1.2;color:var(--cloud);
  font-variant-numeric:tabular-nums;
}
.point h3{font-size:28px;line-height:1.35;margin-bottom:12px;}
.point p{color:var(--muted);max-width:660px;font-size:16px;}

/* ============ 双列小卡 ============ */
.duo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.mini-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color 200ms var(--ease),transform 200ms var(--ease);
}
.mini-card:hover{border-color:rgba(62,127,115,.55);transform:translateY(-2px);}
.mini-media{aspect-ratio:16/10;overflow:hidden;background:#E7E6E0;}
.mini-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.mini-card:hover .mini-media img{transform:scale(1.03);}
.mini-body{padding:22px 24px 24px;}
.mini-body h3{font-size:20px;margin:12px 0 10px;line-height:1.45;}
.mini-body p{font-size:15px;color:var(--muted);}

/* ============ 等级阅读深度 ============ */
.level-list{border-top:1px solid var(--line);}
.level-row{
  display:grid;grid-template-columns:150px 1fr 130px;gap:28px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.level-row .lv-name{font-family:var(--serif);font-size:18px;color:var(--ink);}
.level-row .lv-name small{display:block;font-family:var(--sans);font-size:13px;color:var(--muted);margin-top:4px;}
.bar{height:8px;border-radius:999px;background:#E7E6E0;overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:var(--cloud);}
.bar i.dawn{background:var(--dawn);}
.level-row .lv-val{text-align:right;font-size:14.5px;color:var(--muted);}
.level-row .lv-val b{color:var(--ink);font-variant-numeric:tabular-nums;}

/* ============ FAQ ============ */
.faq{max-width:820px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:500;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--cloud);}
.faq-ico{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.faq-ico svg{width:14px;height:14px;}
.faq-item[open] .faq-ico{transform:rotate(45deg);border-color:var(--cloud);}
.faq-ans{padding:0 0 24px;max-width:720px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);color:var(--inv);
  border-radius:18px;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-band h2{color:var(--inv);font-size:28px;margin-bottom:12px;}
.cta-band p{color:rgba(246,245,241,.72);max-width:520px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-art{flex:0 0 170px;opacity:.5;}
.cta-art svg{width:100%;height:auto;}

/* ============ 返回条 ============ */
.back-bar{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:20px 0;margin-top:8px;
}
.back-bar .note{font-size:14px;color:var(--muted);}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink-deep);color:rgba(246,245,241,.7);margin-top:0;padding:64px 0 28px;font-size:14px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;}
.foot-brand p{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(246,245,241,.6);max-width:300px;}
.foot-col h4{color:var(--inv);font-family:var(--sans);font-size:14px;letter-spacing:.06em;font-weight:500;margin-bottom:16px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col a{color:rgba(246,245,241,.68);font-size:13.5px;}
.foot-col a:hover{color:#8FCBBE;text-decoration:underline;}
.foot-col address{font-size:13.5px;line-height:1.9;color:rgba(246,245,241,.6);}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(246,245,241,.14);
  display:flex;flex-wrap:wrap;gap:16px 28px;justify-content:space-between;
  font-size:12.5px;color:rgba(246,245,241,.5);
}
.foot-bottom .domain{color:rgba(246,245,241,.62);}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}
.fade-up.in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .section{padding:80px 0;}
}
@media (max-width:1279px){
  :root{--sidebar:88px;}
  .sidebar{padding:24px 14px;align-items:center;}
  .side-brand{width:100%;padding:0 0 18px;display:flex;justify-content:center;}
  .brand-text{display:none;}
  .sidebar:hover,.sidebar:focus-within{width:264px;align-items:stretch;padding:24px 20px;box-shadow:var(--sh-hover);}
  .sidebar:hover .brand-text,.sidebar:focus-within .brand-text{display:inline;}
  .sidebar:hover .side-brand,.sidebar:focus-within .side-brand{justify-content:flex-start;}
  .side-nav{width:100%;align-items:stretch;}
  .side-nav a{justify-content:center;}
  .sidebar:hover .side-nav a,.sidebar:focus-within .side-nav a{justify-content:flex-start;}
  .nav-label,.side-note,.side-foot,.side-cta{display:none;}
  .sidebar:hover .nav-label,.sidebar:focus-within .nav-label,
  .sidebar:hover .side-foot,.sidebar:focus-within .side-foot,
  .sidebar:hover .side-cta,.sidebar:focus-within .side-cta{display:block;}
  .sidebar:hover .side-note,.sidebar:focus-within .side-note{display:block;}
  .hero-grid{gap:40px;}
  .foot-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  .foot-grid .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{width:280px;transform:translateX(-100%);padding:28px 20px;align-items:stretch;}
  .sidebar.open{transform:translateX(0);box-shadow:var(--sh-hover);}
  .sidebar .brand-text{display:inline;}
  .sidebar .side-brand{justify-content:flex-start;padding:0 6px 22px;}
  .sidebar .side-nav a{justify-content:flex-start;}
  .sidebar .nav-label,.sidebar .side-note,.sidebar .side-foot,.sidebar .side-cta{display:block;}
  .content{margin-left:0;padding-top:64px;}
  .section{padding:64px 0;}
  .page-hero{padding:52px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{aspect-ratio:16/10;}
  .hero-tag{left:16px;bottom:44px;}
  .point{grid-template-columns:72px 1fr;gap:20px;}
  .point h3{font-size:24px;}
  .level-row{grid-template-columns:130px 1fr;gap:16px;}
  .level-row .lv-val{grid-column:2;text-align:left;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-art{flex:none;width:130px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .sec-head h2{font-size:25px;}
  .page-hero h1{font-size:32px;}
  .hero-facts{gap:24px;}
  .hero-facts .fact{min-width:100px;}
  .point{grid-template-columns:1fr;gap:10px;padding:26px 0;}
  .point-no{font-size:22px;}
  .point h3{font-size:22px;}
  .duo-grid{grid-template-columns:1fr;}
  .level-row{grid-template-columns:1fr;gap:10px;}
  .level-row .lv-val{grid-column:auto;}
  .hero-actions .btn{width:100%;}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:10px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .brand-text{font-size:15px;}
  .level-row .lv-name{font-size:16px;}
  .back-bar{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --ink:#15332E;
  --ink-deep:#0C221F;
  --cloud:#3E7F73;
  --dawn:#D9663A;
  --bg:#F6F5F1;
  --card:#FFFFFF;
  --line:#E2E1DB;
  --text:#232825;
  --muted:#6E7671;
  --invert:#F6F5F1;
  --dash:#C9CBC6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(12,34,31,.06);
  --sh-2:0 12px 32px -12px rgba(12,34,31,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side-w:264px;
  --gap:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.005em;
}
h1,h2,h3,h4,.serif{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin:0;
}
p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cloud);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  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);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:var(--invert);box-shadow:var(--sh-1)}
.btn-primary:hover{background:#0F2622;box-shadow:inset 0 0 0 1px rgba(246,245,241,.22)}
.btn-accent{background:var(--dawn);color:#fff;box-shadow:0 8px 20px -12px rgba(217,102,58,.7)}
.btn-accent:hover{background:#C5572F;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28),0 10px 24px -12px rgba(217,102,58,.75)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:rgba(21,51,46,.06);border-color:var(--cloud);color:var(--cloud)}
.btn-ghost{background:transparent;color:var(--ink);border:0;padding:0;height:auto;text-decoration:underline;text-decoration-color:rgba(62,127,115,.5);text-underline-offset:5px}
.btn-ghost:hover{color:var(--cloud);text-decoration-color:var(--cloud)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--bg);color:var(--ink);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-dawn{background:rgba(217,102,58,.12);color:#B34E27}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted);font-weight:500}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--cloud);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}

/* ---------- 侧边导航 ---------- */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);color:rgba(246,245,241,.74);
  display:flex;flex-direction:column;
  padding:28px 20px 24px;z-index:60;
  border-right:1px solid rgba(255,255,255,.05);
  transition:transform .3s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:rgba(246,245,241,.1);display:grid;place-items:center;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{
  font-family:"Noto Serif SC",Georgia,serif;font-weight:700;font-size:17px;
  color:var(--invert);letter-spacing:-.01em;white-space:nowrap;
}
.side-head{padding:0 6px 22px;border-bottom:1px solid rgba(246,245,241,.1)}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:22px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;font-size:15px;
  color:rgba(246,245,241,.72);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.side-nav a:hover{background:rgba(246,245,241,.08);color:var(--invert)}
.side-nav a.active{background:rgba(246,245,241,.1);color:var(--invert);font-weight:600}
.side-nav a.active::before{
  content:"";position:absolute;left:-20px;top:8px;bottom:8px;width:3px;
  background:var(--dawn);border-radius:0 3px 3px 0;
}
.nav-ico{width:19px;height:19px;flex:0 0 19px;opacity:.9}
.side-cta{margin-top:auto;padding-top:26px}
.side-note{
  margin-top:10px;font-size:12.5px;line-height:1.7;color:rgba(246,245,241,.55);
}
.side-foot{
  margin-top:22px;padding-top:16px;border-top:1px solid rgba(246,245,241,.1);
  font-size:12.5px;line-height:1.85;color:rgba(246,245,241,.5);
}
.side-foot .domain{color:rgba(246,245,241,.4)}

/* ---------- 移动顶栏与抽屉 ---------- */
.top-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:var(--ink);color:var(--invert);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
  box-shadow:0 1px 0 rgba(255,255,255,.06);
}
.hamburger{
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  background:rgba(246,245,241,.1);
}
.hamburger span{display:block;width:18px;height:2px;background:var(--invert);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--invert);border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.top-bar .brand-text{font-size:16px}
.scrim{
  position:fixed;inset:0;background:rgba(12,34,31,.52);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.scrim.is-open{opacity:1;visibility:visible}

/* ---------- 主区域 ---------- */
.main{margin-left:var(--side-w);min-height:100vh}
.section{padding:var(--gap) 0}
.section-tight{padding:56px 0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);padding-top:40px;
}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs a:hover{color:var(--cloud);border-color:var(--cloud)}
.crumbs .sep{color:var(--dash)}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{padding:36px 0 0}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:56px;align-items:center;
}
.page-hero h1{
  font-size:clamp(34px,4.6vw,56px);line-height:1.08;
  margin-bottom:20px;
}
.lede{
  font-size:17px;line-height:1.9;color:var(--muted);max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;
  padding-top:28px;border-top:1px solid var(--line);
}
.fact-num{
  font-family:"Noto Serif SC",Georgia,serif;font-size:34px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.fact-lab{font-size:13.5px;color:var(--muted);margin-top:6px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:18px;
  box-shadow:var(--sh-2);
}
.hero-tag{
  position:absolute;left:-16px;bottom:26px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px 18px;box-shadow:var(--sh-2);max-width:240px;
}
.hero-tag h3{font-size:15px;margin-bottom:4px}
.hero-tag p{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px 32px;box-shadow:var(--sh-1);
}
.stat-strip .item{position:relative;padding-left:18px}
.stat-strip .item::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--cloud);opacity:.5;
}
.stat-strip .num{
  font-family:"Noto Serif SC",Georgia,serif;font-size:30px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.stat-strip .lab{font-size:13.5px;color:var(--muted);margin-top:6px}

/* ---------- 交替图文 ---------- */
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.25;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
}
.split + .split{margin-top:72px}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.split-media img:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.split-body h2{font-size:26px;line-height:1.3;margin:14px 0 16px}
.split-body p{color:var(--muted);font-size:16.5px}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-list li{
  position:relative;padding-left:28px;font-size:15.5px;color:var(--text);line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:8px;top:13px;width:9px;height:5px;
  border-left:1.8px solid var(--cloud);border-bottom:1.8px solid var(--cloud);
  transform:rotate(-45deg);
}
.split.reverse .split-media{order:2}
.split.reverse .split-body{order:1}

/* ---------- 等级速查（浅底区） ---------- */
.tint{background:#F1F0EB}
.tier-note{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.note-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:none;transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.note-card:hover{border-color:rgba(62,127,115,.5);transform:translateY(-2px);box-shadow:var(--sh-2)}
.note-card h3{font-size:19px;margin-bottom:10px}
.note-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.note-card .badge{margin-bottom:12px}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 0;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  font-family:"Noto Serif SC",Georgia,serif;font-weight:700;font-size:18px;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--cloud)}
.faq-ico{position:relative;flex:0 0 18px;width:18px;height:18px;margin-top:7px}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--cloud);border-radius:2px;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.faq-ico::before{left:0;top:8px;width:18px;height:2px}
.faq-ico::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-ico::after{transform:scaleY(0);opacity:0}
.faq-body{
  padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--muted);max-width:720px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--card);border:1px solid var(--ink);border-radius:18px;
  padding:44px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:32px;align-items:center;
}
.cta-band h2{font-size:26px;line-height:1.3;margin-bottom:12px}
.cta-band p{color:var(--muted);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-arc{position:absolute;right:-40px;top:-40px;opacity:.12;pointer-events:none}
.back-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;padding-top:28px;margin-top:8px;border-top:1px solid var(--line);
  font-size:14.5px;color:var(--muted);
}
.back-row .links{display:flex;gap:22px;flex-wrap:wrap}
.back-row a{color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s var(--ease),border-color .2s var(--ease)}
.back-row a:hover{color:var(--cloud);border-color:var(--cloud)}

/* ---------- 页脚 ---------- */
.site-foot{
  background:var(--ink-deep);color:rgba(246,245,241,.72);
  margin-top:var(--gap);padding:64px 0 28px;font-size:14px;
}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(246,245,241,.1);
}
.foot-brand p{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(246,245,241,.6);max-width:320px}
.foot-col h4{
  font-size:14px;color:var(--invert);margin-bottom:16px;letter-spacing:.08em;font-weight:600;
}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:13.5px;color:rgba(246,245,241,.62);transition:color .2s var(--ease)}
.foot-col a:hover{color:#7FB8AB;text-decoration:underline;text-underline-offset:4px}
.foot-col address{font-style:normal;font-size:13.5px;line-height:1.9;color:rgba(246,245,241,.6)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:rgba(246,245,241,.5);
}
.foot-bottom .domain{color:rgba(246,245,241,.4)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.floaty{animation:floaty 6s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 断点 1440 / 1280 ---------- */
@media (min-width:1440px){:root{--gap:104px}}
@media (max-width:1280px){:root{--gap:80px}}
@media (max-width:1279px){
  :root{--side-w:88px}
  .app-side{padding:22px 12px;align-items:center}
  .brand-text{display:none}
  .side-head{padding:0 0 20px;width:100%;display:flex;justify-content:center}
  .side-nav{width:100%}
  .side-nav a{justify-content:center;padding:12px 8px}
  .side-nav a.active::before{left:-12px}
  .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;
    transform:translateY(-50%) translateX(-6px);
    background:var(--ink-deep);color:var(--invert);
    padding:7px 13px;border-radius:8px;white-space:nowrap;font-size:13.5px;
    opacity:0;pointer-events:none;z-index:5;
    box-shadow:0 10px 24px -12px rgba(12,34,31,.5);
    transition:opacity .18s var(--ease),transform .18s var(--ease);
  }
  .side-nav a:hover .nav-label,.side-nav a:focus-visible .nav-label{opacity:1;transform:translateY(-50%) translateX(0)}
  .side-cta,.side-note,.side-foot{display:none}
  .hero-grid{gap:40px}
  .split{gap:40px}
}

/* ---------- 断点 1024 ---------- */
@media (max-width:1023px){
  :root{--side-w:0px;--gap:64px}
  .top-bar{display:flex}
  .app-side{
    width:282px;padding:24px 20px;transform:translateX(-104%);
    padding-top:26px;
  }
  .app-side.is-open{transform:translateX(0);box-shadow:0 24px 60px -18px rgba(12,34,31,.55)}
  .app-side .brand-text{display:inline}
  .side-head{justify-content:flex-start;padding:0 6px 20px}
  .side-nav{align-items:stretch}
  .side-nav a{justify-content:flex-start;padding:12px}
  .side-nav a.active::before{left:-20px}
  .side-nav .nav-label{
    position:static;transform:none;opacity:1;background:none;box-shadow:none;
    padding:0;color:inherit;font-size:15px;pointer-events:auto;
  }
  .side-cta{display:block}
  .side-note{display:block}
  .side-foot{display:block}
  .main{margin-left:0;padding-top:64px}
  .crumbs{padding-top:24px}
  .page-hero{padding-top:24px}
  .stat-strip{grid-template-columns:1fr;gap:18px;padding:24px}
  .tier-note{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:32px}
}

/* ---------- 断点 768 ---------- */
@media (max-width:768px){
  :root{--gap:48px}
  body{font-size:16px}
  .container{padding:0 20px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media img{aspect-ratio:16/10;max-height:44vh}
  .hero-tag{position:static;margin-top:-32px;margin-left:16px;max-width:230px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%;height:48px}
  .hero-facts{gap:24px}
  .fact-num{font-size:28px}
  .split,.split.reverse{grid-template-columns:1fr;gap:24px}
  .split.reverse .split-media{order:0}
  .split.reverse .split-body{order:0}
  .split + .split{margin-top:52px}
  .split-media img{aspect-ratio:16/10}
  .section-head h2{font-size:25px}
  .split-body h2{font-size:22px}
  .cta-band{padding:26px}
  .cta-actions .btn{flex:1 1 100%}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .faq-item summary{font-size:16.5px;padding:18px 0}
}

/* ---------- 断点 480 ---------- */
@media (max-width:480px){
  .container{padding:0 16px}
  .page-hero h1{font-size:30px}
  .lede{font-size:15.5px}
  .foot-grid{grid-template-columns:1fr}
  .stat-strip .num{font-size:26px}
  .hero-tag{margin-left:12px;padding:12px 14px}
  .crumbs{font-size:12.5px;gap:8px}
}

/* ---------- 状态样式补充 ---------- */
.is-loading{background:linear-gradient(90deg,#EDECE6 25%,#F6F5F1 37%,#EDECE6 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:44px 20px;border:1px dashed var(--line);border-radius:var(--r-card);
  color:var(--muted);font-size:14.5px;text-align:center;background:var(--card);
}
.empty-state i{font-size:22px;color:var(--dash)}
.field{margin-top:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--card);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--cloud);box-shadow:0 0 0 2px rgba(62,127,115,.22)}
.field.has-error input{border-color:var(--dawn)}
.field .err{display:block;margin-top:6px;font-size:13px;color:var(--dawn)}
.form-inline{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:end}
@media (max-width:768px){.form-inline{grid-template-columns:1fr}}