/* roulang page: index */
:root{
  --brand-900:#16302A;
  --brand-700:#1F5C4A;
  --brand-500:#2E7A63;
  --accent-600:#C2632F;
  --accent-100:#F5E4D8;
  --jade-400:#7FA88C;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E5DED2;
  --ink:#1B211E;
  --ink-2:#5B655F;
  --ink-3:#8B948E;
  --radius-card:16px;
  --radius-img:12px;
  --radius-field:10px;
  --shadow-soft:0 1px 2px rgba(22,48,42,.06),0 10px 28px -14px rgba(22,48,42,.22);
  --shadow-soft-lg:0 2px 4px rgba(22,48,42,.08),0 22px 44px -20px rgba(22,48,42,.32);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{font-family:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;font-weight:700;line-height:1.3;letter-spacing:0;margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent-100);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,238,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 20px -18px rgba(22,48,42,.5);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;min-height:64px;}
@media(min-width:1024px){.nav-wrap{min-height:84px;}}
.nav-side{display:none;align-items:center;gap:28px;}
@media(min-width:1024px){.nav-side{display:flex;}}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--brand-700);
  transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{left:0;right:0;}
.nav-link[aria-current="page"]{color:var(--brand-700);font-weight:600;}
.nav-link[aria-current="page"]::after{left:0;right:0;}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{width:38px;height:38px;flex:none;color:var(--brand-700);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-family:'Noto Serif SC','Songti SC',serif;font-size:19px;font-weight:700;color:var(--brand-900);letter-spacing:.04em;}
.brand-sub{font-size:11px;letter-spacing:.22em;color:var(--ink-3);}
@media(min-width:1024px){.brand-mark{width:44px;height:44px;}.brand-main{font-size:21px;}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-field);font-size:15px;font-weight:500;
  padding:11px 20px;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-soft);}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-outline:hover{border-color:var(--accent-600);color:var(--accent-600);}
.btn-ghost{background:transparent;color:var(--brand-700);padding-left:0;padding-right:0;}
.btn-ghost .arrow{transition:transform .2s ease;}
.btn-ghost:hover{color:var(--accent-600);}
.btn-ghost:hover .arrow{transform:translateX(6px);}
.btn:disabled,.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none;}
.btn-sm{padding:9px 16px;font-size:14px;}
.nav-cta{display:none;}
@media(min-width:1024px){.nav-cta{display:inline-flex;}}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand-900);
}
.burger:hover{border-color:var(--brand-700);}
@media(min-width:1024px){.burger{display:none;}}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-panel.open{display:block;}
.mobile-panel ul{padding:8px 0;}
.mobile-panel li + li{border-top:1px solid var(--line);}
.mobile-panel a{display:block;padding:15px 20px;font-size:16px;color:var(--ink-2);}
.mobile-panel a:hover{background:var(--paper);color:var(--brand-700);}
.mobile-panel a[aria-current="page"]{color:var(--brand-700);font-weight:600;}
.mobile-panel .mobile-foot{padding:16px 20px 22px;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:
  linear-gradient(120deg, rgba(22,48,42,.05) 0%, rgba(247,244,238,0) 46%),
  var(--paper);}
.hero::after{
  content:"南";position:absolute;right:-40px;bottom:-70px;
  font-family:'Noto Serif SC','Songti SC',serif;font-size:340px;line-height:1;
  color:var(--brand-900);opacity:.05;pointer-events:none;user-select:none;
}
.hero-inner{position:relative;z-index:1;padding:56px 0 60px;display:grid;gap:40px;}
@media(min-width:1024px){.hero-inner{grid-template-columns:6fr 6fr;gap:56px;padding:76px 0 84px;align-items:center;min-height:600px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.16em;
  color:var(--brand-500);background:rgba(127,168,140,.14);border-radius:999px;padding:6px 14px;
}
.hero h1{font-size:clamp(28px,4.2vw,46px);line-height:1.28;margin:20px 0 0;color:var(--brand-900);}
.hero-sub{margin-top:18px;font-size:16.5px;color:var(--ink-2);max-width:32em;line-height:1.9;}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.trust{margin-top:36px;display:flex;flex-wrap:wrap;gap:10px 22px;padding-top:22px;border-top:1px solid var(--line);}
.trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);}
.trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--jade-400);flex:none;}
.hero-visual{position:relative;}
.hero-photo{
  position:relative;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/10;
  box-shadow:var(--shadow-soft-lg);border:1px solid var(--line);background:#fff;
}
.hero-photo img{width:100%;height:100%;object-fit:cover;}
.hero-photo::after{content:"";position:absolute;inset:0;background:rgba(22,48,42,.08);}
.hero-stat{
  position:absolute;right:-8px;bottom:-22px;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;box-shadow:var(--shadow-soft);min-width:168px;
}
@media(min-width:1024px){.hero-stat{right:-24px;bottom:-26px;}}
.hero-stat .num{font-family:'Noto Serif SC','Songti SC',serif;font-size:32px;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-stat .lab{font-size:13px;color:var(--ink-3);margin-top:4px;}

/* ---------- section base ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:80px 0 96px;}}
.section-head{margin-bottom:28px;}
@media(min-width:768px){.section-head{margin-bottom:40px;}}
.section-title{position:relative;padding-left:14px;font-size:clamp(22px,2.6vw,32px);color:var(--brand-900);}
.section-title::before{content:"";position:absolute;left:0;top:.22em;width:3px;height:20px;background:var(--accent-600);border-radius:2px;}
.section-desc{margin-top:12px;color:var(--ink-2);font-size:16px;max-width:52em;}
.head-row{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;}

/* ---------- services ---------- */
.svc-grid{display:grid;gap:20px;}
@media(min-width:1024px){.svc-grid{grid-template-columns:repeat(5,1fr);gap:22px;}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-soft-lg);transform:translateY(-4px);border-color:rgba(194,99,47,.35);}
.svc-big{padding:26px 26px 24px;display:flex;flex-direction:column;gap:12px;}
@media(min-width:1024px){.svc-big{grid-column:span 2;}}
.svc-num{font-family:'Noto Serif SC','Songti SC',serif;font-size:14px;color:var(--accent-600);letter-spacing:.12em;}
.svc-big h3{font-size:20px;color:var(--brand-900);}
.svc-big p{font-size:15px;color:var(--ink-2);line-height:1.9;}
.svc-thumb{border-radius:10px;overflow:hidden;aspect-ratio:16/9;margin-bottom:4px;}
.svc-thumb img{width:100%;height:100%;object-fit:cover;}
.svc-col{display:flex;flex-direction:column;gap:22px;}
@media(min-width:1024px){.svc-col{grid-column:span 1;}}
.svc-mini{padding:20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.svc-mini h3{font-size:17px;color:var(--brand-900);}
.svc-mini p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- stats ---------- */
.stats{background:var(--brand-900);color:#DCE7E0;padding:48px 0;}
@media(min-width:768px){.stats{padding:64px 0;}}
.stats h2{color:#fff;font-size:clamp(22px,2.4vw,28px);text-align:center;}
.stats-sub{text-align:center;color:rgba(220,231,224,.72);font-size:15px;margin-top:12px;}
.stat-grid{margin-top:40px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(220,231,224,.18);border-top:1px solid rgba(220,231,224,.18);border-bottom:1px solid rgba(220,231,224,.18);}
@media(min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat-cell{background:var(--brand-900);padding:26px 18px;text-align:center;}
@media(min-width:900px){.stat-cell{border-right:1px solid rgba(220,231,224,.18);}.stat-cell:last-child{border-right:0;}}
.stat-cell .num{font-family:'Noto Serif SC','Songti SC',serif;font-size:clamp(32px,4vw,52px);line-height:1.1;color:#fff;font-variant-numeric:tabular-nums;}
.stat-cell .num small{font-size:.45em;margin-left:2px;color:var(--jade-400);}
.stat-cell .lab{margin-top:10px;font-size:14px;color:rgba(220,231,224,.78);}

/* ---------- cases ---------- */
.case-grid{display:grid;gap:22px;}
@media(min-width:1024px){.case-grid{grid-template-columns:7fr 5fr;}}
.case-feature{overflow:hidden;display:flex;flex-direction:column;}
.case-photo{aspect-ratio:16/9;overflow:hidden;}
.case-photo img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-feature:hover .case-photo img,.case-card:hover .case-photo img{transform:scale(1.03);}
.case-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;}
.case-body h3{font-size:21px;color:var(--brand-900);}
.case-body p{font-size:15px;color:var(--ink-2);line-height:1.9;}
.case-side{display:grid;gap:22px;}
.badge{
  display:inline-flex;align-items:center;font-size:13px;line-height:1;
  padding:6px 12px;border-radius:999px;background:var(--accent-100);color:var(--accent-600);font-weight:500;
}
.badge-jade{background:rgba(127,168,140,.16);color:var(--brand-500);}
.case-card{overflow:hidden;display:flex;flex-direction:column;}
.case-card .case-photo{aspect-ratio:16/9;}
.case-card .case-small{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;}
.case-card .case-small h3{font-size:17px;color:var(--brand-900);}
.case-card .case-small p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.meta-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);}

/* ---------- process ---------- */
.process{position:relative;}
.steps{margin-top:8px;display:grid;gap:26px;}
@media(min-width:1024px){.steps{grid-template-columns:1fr 1fr;gap:34px 48px;}}
.step{position:relative;padding-left:34px;}
.step::before{content:"";position:absolute;left:5px;top:8px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--line);}
.step:first-child::before{background:var(--accent-600);border-color:var(--accent-600);}
.step::after{content:"";position:absolute;left:10px;top:22px;bottom:-26px;width:2px;background:var(--line);}
.step:last-child::after{display:none;}
@media(min-width:1024px){.step:nth-last-child(-n+2)::after{display:none;}}
.step .idx{font-family:'Noto Serif SC','Songti SC',serif;font-size:14px;letter-spacing:.14em;color:var(--accent-600);}
.step h3{font-size:19px;color:var(--brand-900);margin-top:6px;}
.step p{font-size:15px;color:var(--ink-2);margin-top:8px;line-height:1.9;}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 4px;font-family:'Noto Serif SC','Songti SC',serif;font-size:17.5px;font-weight:600;color:var(--brand-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-icon{flex:none;width:22px;height:22px;position:relative;margin-top:3px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent-600);border-radius:2px;transition:transform .2s ease;}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-answer{padding:0 34px 24px 4px;font-size:15.5px;color:var(--ink-2);line-height:1.95;}

/* ---------- news ---------- */
.news-grid{display:grid;gap:22px;}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{overflow:hidden;display:flex;flex-direction:column;height:100%;}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--paper);position:relative;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-cover.empty::after{content:"";position:absolute;inset:14px;border:1px dashed var(--jade-400);border-radius:8px;opacity:.6;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:17px;color:var(--brand-900);line-height:1.5;}
.news-card:hover h3{color:var(--brand-700);}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.news-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);}
.news-foot .go{color:var(--brand-700);font-size:13px;}
.news-card:hover .news-foot .go{color:var(--accent-600);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:32px 20px;
}
.empty-state .ring{width:44px;height:44px;border-radius:50%;border:1px solid var(--jade-400);position:relative;}
.empty-state .ring::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:14px;height:1px;background:var(--jade-400);}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0;}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-900);border-radius:var(--radius-card);padding:34px 28px;display:grid;gap:22px;align-items:center;}
@media(min-width:900px){.cta-band{grid-template-columns:1fr auto;padding:40px 44px;}}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,26px);}
.cta-band p{color:rgba(220,231,224,.78);font-size:15px;margin-top:10px;}
.cta-band .btn-outline{border-color:rgba(220,231,224,.45);color:#fff;}
.cta-band .btn-outline:hover{border-color:var(--accent-600);color:var(--accent-600);}

/* ---------- contact ---------- */
.contact-grid{display:grid;gap:30px;}
@media(min-width:1024px){.contact-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:start;}}
.contact-list{margin-top:26px;}
.contact-list li{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);}
.contact-list li:last-child{border-bottom:1px solid var(--line);}
.contact-list .ico{flex:none;width:36px;height:36px;border-radius:10px;background:var(--accent-100);color:var(--accent-600);display:flex;align-items:center;justify-content:center;}
.contact-list .k{font-size:13px;color:var(--ink-3);}
.contact-list .v{font-size:15.5px;color:var(--brand-900);}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-soft);padding:26px;}
@media(min-width:768px){.form-card{padding:30px;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-field);background:#fff;
  padding:12px 14px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.field input{height:46px;padding-top:0;padding-bottom:0;}
.field textarea{min-height:120px;resize:vertical;line-height:1.8;}
.field input:hover,.field textarea:hover{border-color:var(--jade-400);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 2px var(--accent-600);}
.hint{font-size:13px;color:var(--ink-3);margin-top:8px;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#DCE7E0;margin-top:0;padding:56px 0 0;}
.foot-grid{display:grid;gap:34px;}
@media(min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
.site-footer p{color:rgba(220,231,224,.75);font-size:14px;line-height:1.9;}
.site-footer a{color:#DCE7E0;font-size:14px;display:inline-block;}
.site-footer a:hover{color:var(--accent-600);transform:translateX(-2px);}
.foot-links li{margin-bottom:10px;}
.foot-brand .brand-main{color:#fff;}
.foot-brand .brand-sub{color:rgba(220,231,224,.6);}
.foot-brand .brand-mark{color:var(--jade-400);}
.foot-bottom{
  margin-top:44px;border-top:1px solid rgba(220,231,224,.18);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(220,231,224,.6);
}
.to-top{
  position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-700);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-soft-lg);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,background-color .2s ease,visibility .2s ease;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-900);}
@media print{.site-header,.to-top{display:none;}}

/* roulang page: article */
:root{
  --brand-900:#16302A;
  --brand-700:#1F5C4A;
  --brand-500:#2E7A63;
  --accent-600:#C2632F;
  --accent-100:#F5E4D8;
  --jade-400:#7FA88C;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E5DED2;
  --line-soft:#EFE9DE;
  --ink:#1B211E;
  --ink-2:#5B655F;
  --ink-3:#8B948E;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-soft:0 1px 2px rgba(22,48,42,.06),0 10px 28px -14px rgba(22,48,42,.22);
  --shadow-hover:0 2px 4px rgba(22,48,42,.08),0 18px 40px -16px rgba(22,48,42,.28);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
::selection{background:var(--accent-100);color:var(--brand-900)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EFEAE0}
::-webkit-scrollbar-thumb{background:#C9BFAD;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,238,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:82px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--ink-2);
  padding:6px 2px;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--brand-700);border-radius:2px;
  transition:left .2s ease-out,right .2s ease-out;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{left:0;right:0}
.nav-link[aria-current="page"]{color:var(--brand-700);font-weight:600}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 18px;border-radius:var(--radius-sm);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:500;
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.nav-cta:hover{background:var(--brand-900);transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.nav-cta:active{transform:translateY(0)}

.brand{display:flex;align-items:center;gap:10px;color:var(--brand-700)}
.brand-mark{width:38px;height:38px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:.08em;color:var(--brand-900)}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--ink-3)}

.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid var(--line);color:var(--brand-900);
  cursor:pointer;transition:border-color .2s ease-out,background .2s ease-out;
}
.menu-btn:hover{border-color:var(--brand-700);background:#fff}
.menu-bars,.menu-bars::before,.menu-bars::after{
  display:block;width:16px;height:1.8px;background:currentColor;border-radius:2px;
  transition:transform .2s ease-out;
}
.menu-bars{position:relative}
.menu-bars::before,.menu-bars::after{content:"";position:absolute;left:0}
.menu-bars::before{top:-6px}
.menu-bars::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(22,48,42,.42);
}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;top:0;left:0;right:0;
  background:var(--paper);
  padding:18px 20px 26px;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  animation:drawerIn .22s ease-out;
}
@keyframes drawerIn{from{transform:translateY(-14px);opacity:0}to{transform:translateY(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-head span{font-family:var(--font-serif);font-size:16px;color:var(--brand-900)}
.drawer-close{
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-sm);
  height:34px;padding:0 14px;font-size:13px;color:var(--ink-2);cursor:pointer;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.drawer-close:hover{border-color:var(--accent-600);color:var(--accent-600)}
.drawer-link{
  display:block;padding:14px 2px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line-soft);
}
.drawer-link:active{color:var(--brand-700)}
.drawer-cta{
  display:flex;align-items:center;justify-content:center;height:46px;margin-top:20px;
  border-radius:var(--radius-sm);background:var(--brand-700);color:#fff;font-size:15px;
}
.drawer-tel{margin-top:14px;font-size:13.5px;color:var(--ink-3);text-align:center}

@media (max-width:900px){
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:12px}
  .nav-side.left .nav-link{display:none}
  .nav-side.right .nav-link{display:none}
  .nav-side{gap:0}
  .menu-btn{display:inline-flex}
  .brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
  .brand-mark{width:32px;height:32px}
  .brand-main{font-size:17px}
  .brand-sub{font-size:10px;letter-spacing:.14em}
  .nav-cta{height:34px;padding:0 13px;font-size:13px}
}

/* ============ 面包屑 ============ */
.breadcrumb-bar{background:#F2EEE6;border-bottom:1px solid var(--line)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:13px 0;font-size:13px;color:var(--ink-3);
}
.breadcrumb a{color:var(--ink-2);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:#C6BCA9}
.breadcrumb .current{color:var(--ink-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:520px){.breadcrumb .current{max-width:180px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-soft)}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-primary[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--accent-600);color:var(--accent-600)}
.btn-outline:active{background:var(--accent-100)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-light:hover{background:#fff;color:var(--brand-900);border-color:#fff}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--brand-700);
  transition:color .2s ease-out;
}
.btn-text svg{transition:transform .2s ease-out}
.btn-text:hover{color:var(--accent-600)}
.btn-text:hover svg{transform:translateX(6px)}

/* ============ 文章区 ============ */
.article-shell{padding:46px 0 0}
.article-head{max-width:880px;margin:0 auto}
.article-kicker{
  display:inline-flex;align-items:center;
  height:28px;padding:0 13px;border-radius:999px;
  background:var(--accent-100);color:var(--accent-600);
  font-size:13px;letter-spacing:.02em;
}
.article-title{
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(26px,3.6vw,40px);line-height:1.32;
  color:var(--brand-900);margin:16px 0 16px;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-3);
}
.article-meta .dot{color:#C6BCA9}
.article-cover{
  margin-top:30px;border-radius:14px;overflow:hidden;
  aspect-ratio:21/9;background:#EFEAE0;box-shadow:var(--shadow-soft);
}
.article-cover img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.article-cover{aspect-ratio:16/9;margin-top:22px}}

.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:48px;margin-top:46px;
}
@media (min-width:1024px){
  .article-layout{
    grid-template-columns:minmax(0,760px) 296px;
    justify-content:center;gap:56px;
  }
}

.article-body{
  font-size:17px;line-height:1.95;color:#232A26;
  overflow-wrap:break-word;word-break:break-word;
}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  position:relative;
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(21px,2.4vw,28px);line-height:1.4;
  color:var(--brand-900);
  margin:2.1em 0 .85em;padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;
  width:3px;border-radius:2px;background:var(--accent-600);
}
.article-body h3{
  font-family:var(--font-serif);font-weight:600;
  font-size:19px;line-height:1.5;color:var(--brand-900);
  margin:1.6em 0 .7em;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--brand-900);margin:1.4em 0 .6em}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em;line-height:1.85}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0}
.article-body ul li::marker,.article-body ol li::marker{color:var(--brand-500)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;
  background:var(--accent-100);border-left:4px solid var(--accent-600);
  border-radius:0 12px 12px 0;color:#3F4A44;font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand-700);border-bottom:1px solid rgba(31,92,74,.35);transition:color .2s ease-out,border-color .2s ease-out}
.article-body a:hover{color:var(--accent-600);border-color:var(--accent-600)}
.article-body img{border-radius:12px;margin:1.6em auto;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:14px;color:var(--ink-3);margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;margin:1.6em 0;
}
.article-body th{
  background:#EEF3EF;color:var(--brand-900);text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body tbody tr:nth-child(even) td{background:rgba(229,222,210,.18)}
.article-body code{
  background:#EFEAE0;border-radius:6px;padding:2px 6px;
  font-size:14.5px;color:#8A4A22;
}

.article-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:52px 28px;text-align:center;box-shadow:var(--shadow-soft);
}
.article-empty svg{margin:0 auto 18px;color:var(--jade-400)}
.article-empty h2{
  font-family:var(--font-serif);font-size:22px;color:var(--brand-900);margin-bottom:10px;
}
.article-empty p{font-size:15px;color:var(--ink-2);margin:0 auto 24px;max-width:460px}

/* 文章尾部 */
.article-foot{margin-top:42px;padding-top:28px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:#F2EEE6;
  font-size:13px;color:var(--ink-2);
  transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
}
.tag:hover{border-color:var(--accent-600);color:var(--accent-600);background:#fff}
.post-actions{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
}
.post-nav{display:flex;flex-wrap:wrap;gap:10px}
.post-nav a{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:13.5px;color:var(--ink-2);background:var(--surface);
  transition:border-color .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.post-nav a:hover{border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-2px)}

/* 侧栏 */
.article-aside{display:none}
@media (min-width:1024px){.article-aside{display:block}}
.aside-inner{position:sticky;top:106px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:20px;
}
.side-card h3{
  font-family:var(--font-serif);font-size:16px;font-weight:600;
  color:var(--brand-900);margin-bottom:14px;padding-bottom:12px;
  border-bottom:1px solid var(--line-soft);
}
.side-meta{display:flex;flex-direction:column;gap:12px}
.side-meta div{display:flex;justify-content:space-between;gap:12px;font-size:13.5px}
.side-meta dt,.side-meta span:first-child{color:var(--ink-3)}
.side-meta span:last-child{color:var(--ink-2);text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-list{display:flex;flex-direction:column;gap:14px}
.side-list li{display:flex;gap:12px;align-items:flex-start}
.side-list img{width:64px;height:46px;border-radius:9px;object-fit:cover;flex:none;background:#EFEAE0}
.side-list a{font-size:14px;color:var(--ink-2);line-height:1.65;transition:color .2s ease-out}
.side-list a:hover{color:var(--brand-700)}
.side-list .side-date{display:block;font-size:12.5px;color:var(--ink-3);margin-top:4px}
.side-cta{
  background:var(--brand-900);border-radius:14px;padding:22px;color:#DCE7E0;
}
.side-cta h3{font-family:var(--font-serif);font-size:16px;color:#fff;margin-bottom:10px}
.side-cta p{font-size:13.5px;color:#B9CBC2;line-height:1.8;margin-bottom:16px}
.side-cta .btn{width:100%;height:42px;font-size:14px;background:#fff;color:var(--brand-900)}
.side-cta .btn:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px)}

/* ============ 相关阅读 ============ */
.related-section{
  margin-top:72px;padding:72px 0 76px;
  background:#F2EEE6;border-top:1px solid var(--line);
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;margin-bottom:32px;
}
.section-head h2{
  position:relative;padding-left:15px;
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(21px,2.4vw,27px);color:var(--brand-900);line-height:1.4;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.25em;bottom:.25em;
  width:3px;border-radius:2px;background:var(--accent-600);
}
.section-head p{font-size:14.5px;color:var(--ink-2);margin-top:8px}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#DCD3C4}
.related-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#EFEAE0}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.related-card:hover .thumb img{transform:scale(1.04)}
.related-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card .badge{
  align-self:flex-start;display:inline-flex;align-items:center;
  height:26px;padding:0 11px;border-radius:999px;
  background:var(--accent-100);color:var(--accent-600);font-size:12.5px;
}
.related-card h3{
  font-family:var(--font-serif);font-size:17.5px;font-weight:600;
  color:var(--brand-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card p{
  font-size:14px;color:var(--ink-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card .meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.related-card .meta svg{transition:transform .2s ease-out;color:var(--brand-700)}
.related-card:hover .meta svg{transform:translateX(5px)}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--brand-900);padding:58px 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(220,231,224,.12);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;position:relative;z-index:1;
}
.cta-inner h2{
  font-family:var(--font-serif);font-size:clamp(21px,2.4vw,29px);
  color:#fff;line-height:1.45;margin-bottom:10px;
}
.cta-inner p{font-size:15px;color:#B9CBC2;max-width:560px;line-height:1.9}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#DCE7E0;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .brand{color:#fff}
.foot-brand .brand-main{color:#fff}
.foot-brand .brand-sub{color:#9DB3A8}
.foot-brand p{font-size:14.5px;color:#B9CBC2;line-height:1.9;max-width:320px}
.site-footer h4{
  font-family:var(--font-serif);font-size:16px;font-weight:600;
  color:#fff;margin-bottom:16px;
}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links li{font-size:14.5px;color:#B9CBC2}
.foot-links a{
  display:inline-block;color:#DCE7E0;
  transition:color .2s ease-out,transform .2s ease-out;
}
.foot-links a:hover{color:var(--accent-600);transform:translateX(2px)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(220,231,224,.16);
  font-size:13px;color:#8FA79C;
}
@media (max-width:1024px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:600px){
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{justify-content:center;text-align:center}
}

/* 返回顶部 */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:80;
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  background:var(--brand-700);color:#fff;box-shadow:var(--shadow-soft);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out,background .2s ease-out;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--brand-900);transform:translateY(-3px)}

/* roulang page: category1 */
:root{
  --brand-900:#16302A;
  --brand-700:#1F5C4A;
  --brand-500:#2E7A63;
  --accent-600:#C2632F;
  --accent-100:#F5E4D8;
  --jade-400:#7FA88C;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E5DED2;
  --ink:#1B211E;
  --ink-2:#5B655F;
  --ink-3:#8B948E;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(22,48,42,.06),0 10px 28px -14px rgba(22,48,42,.22);
  --shadow-lg:0 2px 6px rgba(22,48,42,.08),0 22px 44px -18px rgba(22,48,42,.32);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --sans:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;margin:0;padding:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.3;letter-spacing:0;margin:0;}
p{margin:0 0 1.1em;}
::selection{background:var(--accent-100);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 1px 2px rgba(22,48,42,.12),0 14px 26px -18px rgba(22,48,42,.9);}
.btn-primary:hover{background:var(--brand-900);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--brand-900);}
.btn-ghost:hover{border-color:var(--accent-600);color:var(--accent-600);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent;}
.btn-light:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-2px);}
.btn:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.6;cursor:not-allowed;transform:none;}
.btn-sm{padding:9px 16px;font-size:14px;}

.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-size:15px;font-weight:500;transition:color .2s ease,gap .2s ease;}
.text-link::after{content:"→";transition:transform .2s ease;}
.text-link:hover{color:var(--accent-600);}
.text-link:hover::after{transform:translateX(4px);}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,238,.93);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 24px -22px rgba(22,48,42,.9);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;min-height:82px;
}
.nav-side{display:flex;align-items:center;gap:26px;font-size:15px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{position:relative;color:var(--ink-2);padding:6px 0;transition:color .2s ease;}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--brand-700);transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{left:0;right:0;}
.nav-link[aria-current="page"]{color:var(--brand-700);font-weight:500;}
.nav-link[aria-current="page"]::after{left:0;right:0;}

.brand{display:flex;align-items:center;gap:12px;justify-self:center;color:var(--brand-900);}
.brand-mark{width:40px;height:40px;flex:none;color:var(--brand-700);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-family:var(--serif);font-size:22px;font-weight:700;letter-spacing:3px;}
.brand-sub{font-size:11px;letter-spacing:1.6px;color:var(--ink-2);white-space:nowrap;}

.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;color:var(--brand-900);transition:border-color .2s ease,color .2s ease;}
.menu-toggle:hover{border-color:var(--brand-700);color:var(--brand-700);}
.mobile-cta{display:none;}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--paper);}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{display:flex;flex-direction:column;}
.mobile-drawer li{border-bottom:1px solid var(--line);}
.mobile-drawer li:last-child{border-bottom:0;}
.mobile-drawer a{display:block;padding:15px 4px;font-size:16px;color:var(--ink-2);transition:color .2s ease,padding-left .2s ease;}
.mobile-drawer a:hover{color:var(--brand-700);padding-left:8px;}
.mobile-drawer a[aria-current="page"]{color:var(--brand-700);font-weight:500;}
.drawer-foot{padding:18px 0 24px;display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--ink-2);}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  padding:52px 0 62px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(120% 120% at 100% 0%,rgba(127,168,140,.16) 0%,rgba(247,244,238,0) 58%),
    linear-gradient(180deg,#FBF9F5 0%,var(--paper) 100%);
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;right:-60px;bottom:-90px;
  width:320px;height:320px;border-radius:50%;
  background:rgba(31,92,74,.05);pointer-events:none;
}
.page-head-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-3);}
.page-title{font-size:clamp(28px,4.2vw,46px);line-height:1.25;}
.page-lead{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:540px;line-height:1.95;}
.head-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.head-media{
  position:relative;border-radius:18px;overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow);aspect-ratio:16/11;
}
.head-media img{width:100%;height:100%;object-fit:cover;}
.head-chip{
  position:absolute;left:18px;bottom:18px;
  background:rgba(247,244,238,.94);border:1px solid var(--line);
  border-radius:12px;padding:10px 16px;font-size:13px;color:var(--brand-900);
  display:flex;align-items:center;gap:10px;
}
.head-chip strong{font-family:var(--serif);font-size:18px;font-variant-numeric:tabular-nums;}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:60px;padding:72px 0 84px;}
.anchor-col{position:relative;}
.anchor-nav{position:sticky;top:112px;display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);padding-left:18px;}
.anchor-nav a{font-size:15px;color:var(--ink-2);padding:7px 0;transition:color .2s ease,transform .2s ease;}
.anchor-nav a:hover{color:var(--brand-700);transform:translateX(3px);}
.anchor-nav a.is-active{color:var(--brand-700);font-weight:600;}
.anchor-tip{margin-top:24px;font-size:13px;color:var(--ink-3);line-height:1.8;}

.block{padding-bottom:60px;margin-bottom:60px;border-bottom:1px solid var(--line);scroll-margin-top:112px;}
.block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.block-head{margin-bottom:26px;}
.block-title{font-size:clamp(22px,2.6vw,30px);display:flex;gap:12px;align-items:flex-start;}
.block-title::before{content:"";flex:none;width:3px;height:20px;background:var(--accent-600);margin-top:8px;border-radius:2px;}
.block-note{margin-top:12px;color:var(--ink-2);font-size:15.5px;max-width:720px;}

.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.split.rev .split-media{order:2;}
.split-text p{color:var(--ink-2);font-size:16px;}
.media{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow);aspect-ratio:4/3;
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.media:hover img{transform:scale(1.03);}
.media-caption{margin-top:12px;font-size:13px;color:var(--ink-3);text-align:center;}

.check-list{display:flex;flex-direction:column;gap:12px;margin:22px 0 0;}
.check-list li{position:relative;padding-left:30px;color:var(--ink-2);font-size:15.5px;line-height:1.8;}
.check-list li::before{
  content:"";position:absolute;left:2px;top:10px;width:13px;height:7px;
  border-left:2px solid var(--jade-400);border-bottom:2px solid var(--jade-400);
  transform:rotate(-45deg);
}
.check-list li strong{color:var(--ink);font-weight:600;}

.attr-list{margin-top:26px;border-top:1px solid var(--line);}
.attr-row{display:grid;grid-template-columns:132px minmax(0,1fr);gap:18px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15.5px;}
.attr-key{color:var(--ink-3);}
.attr-val{color:var(--ink);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:6px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#DCD3C4;}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:var(--accent-100);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;}
.card-body p{font-size:15px;color:var(--ink-2);margin:0;line-height:1.8;}
.card-foot{margin-top:auto;padding-top:8px;}
.badge{display:inline-flex;align-items:center;background:var(--accent-100);color:var(--accent-600);font-size:13px;padding:4px 12px;border-radius:999px;line-height:1.6;}

.steps{margin-top:8px;border-left:2px solid var(--line);padding-left:30px;display:flex;flex-direction:column;gap:30px;}
.step{position:relative;}
.step::before{
  content:"";position:absolute;left:-38px;top:9px;width:12px;height:12px;border-radius:50%;
  background:var(--surface);border:2px solid var(--jade-400);
}
.step:first-child::before{background:var(--accent-600);border-color:var(--accent-600);}
.step-no{display:block;font-family:var(--serif);font-size:14px;letter-spacing:2px;color:var(--accent-600);margin-bottom:4px;}
.step h3{font-size:19px;margin-bottom:6px;}
.step p{font-size:15px;color:var(--ink-2);margin:0;}

/* ============ 通栏 CTA ============ */
.cta-band{
  margin:64px 0 0;
  background:var(--brand-900);color:#DCE7E0;
  border-radius:18px;padding:42px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  position:relative;overflow:hidden;box-shadow:var(--shadow-lg);
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:rgba(127,168,140,.14);
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);color:#fff;margin-bottom:10px;}
.cta-band p{margin:0;font-size:15.5px;color:#C9D8D0;max-width:560px;}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-of-type{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:24px;padding:22px 2px;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item summary::after{
  content:"+";flex:none;color:var(--accent-600);font-size:24px;line-height:1;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-answer{padding:0 2px 24px;color:var(--ink-2);font-size:15.5px;max-width:720px;}

/* ============ 相关推荐 ============ */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.rec-cover{aspect-ratio:16/9;overflow:hidden;background:var(--accent-100);}
.rec-cover img{width:100%;height:100%;object-fit:cover;}
.rec-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;line-height:1.5;}
.rec-body p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75;}
.rec-foot{margin-top:auto;padding-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);}
.rec-foot a{color:var(--brand-700);transition:color .2s ease;}
.rec-foot a:hover{color:var(--accent-600);}

/* ============ 页尾联系 ============ */
.final-cta{background:var(--surface);border-top:1px solid var(--line);padding:72px 0 80px;}
.final-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;}
.contact-list{margin-top:26px;border-top:1px solid var(--line);}
.contact-line{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink-2);}
.contact-line .dot{width:8px;height:8px;border-radius:50%;background:var(--jade-400);margin-top:11px;flex:none;}
.contact-line strong{color:var(--ink);font-weight:600;display:block;font-size:14px;font-family:var(--serif);letter-spacing:1px;}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow);}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-tip{font-size:14px;color:var(--ink-2);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;font-family:var(--sans);font-size:15px;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 2px rgba(194,99,47,.35);}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.form-note{font-size:13px;color:var(--ink-3);margin-top:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#DCE7E0;padding:60px 0 26px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.foot-brand .brand{justify-self:flex-start;color:#F7F4EE;}
.foot-brand .brand-mark{color:#DCE7E0;}
.foot-brand .brand-main{color:#fff;letter-spacing:3px;}
.foot-brand .brand-sub{color:#9FB5AA;}
.foot-brand p{font-size:14.5px;color:#B9CBC2;line-height:1.85;max-width:320px;}
.site-footer h4{font-size:15px;color:#fff;font-family:var(--serif);letter-spacing:1px;margin-bottom:16px;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a,.foot-links li{font-size:14.5px;color:#B9CBC2;}
.foot-links a{transition:color .2s ease,padding-left .2s ease;}
.foot-links a:hover{color:var(--accent-600);padding-left:3px;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(220,231,224,.16);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8FA69C;
}

.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-900);color:#fff;display:grid;place-items:center;z-index:70;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .2s ease,background-color .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand-700);transform:translateY(-3px);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .header-inner{grid-template-columns:auto 1fr auto;min-height:64px;gap:12px;}
  .nav-side{display:none;}
  .menu-toggle{display:inline-flex;}
  .brand{justify-self:center;}
  .brand-mark{width:34px;height:34px;}
  .brand-main{font-size:19px;letter-spacing:2px;}
  .brand-sub{font-size:10px;letter-spacing:1.2px;}
  .mobile-cta{display:inline-flex;}
  .page-head{padding:34px 0 44px;}
  .page-head-grid{grid-template-columns:1fr;gap:30px;}
  .head-media{aspect-ratio:16/10;}
  .layout{grid-template-columns:1fr;gap:34px;padding:48px 0 64px;}
  .anchor-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:10px;border-left:0;padding-left:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;}
  .anchor-nav a{padding:5px 12px;border:1px solid var(--line);border-radius:999px;font-size:14px;background:var(--surface);}
  .anchor-nav a.is-active{border-color:var(--brand-700);color:var(--brand-700);}
  .anchor-tip{display:none;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split.rev .split-media{order:0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 30px;}
  .final-grid{grid-template-columns:1fr;gap:38px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .header-inner{gap:10px;}
  .brand-main{font-size:18px;}
  .page-title{font-size:27px;}
  .page-lead{font-size:15.5px;}
  .head-actions .btn{flex:1 1 auto;}
  .card-grid,.rec-grid{grid-template-columns:1fr;}
  .attr-row{grid-template-columns:1fr;gap:4px;}
  .attr-key{font-size:13px;}
  .step::before{left:-31px;}
  .steps{padding-left:24px;}
  .cta-band{padding:28px 22px;border-radius:14px;}
  .cta-band-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:14px;bottom:16px;}
  .form-card{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
    --brand-900:#16302A;
    --brand-700:#1F5C4A;
    --brand-500:#2E7A63;
    --accent-600:#C2632F;
    --accent-100:#F5E4D8;
    --jade-400:#7FA88C;
    --paper:#F7F4EE;
    --surface:#FFFFFF;
    --line:#E5DED2;
    --ink:#1B211E;
    --ink-2:#5B655F;
    --ink-3:#8B948E;
    --radius-card:16px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(22,48,42,.06), 0 10px 28px -14px rgba(22,48,42,.22);
    --shadow-2:0 2px 6px rgba(22,48,42,.10), 0 20px 44px -18px rgba(22,48,42,.34);
    --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
    --font-sans:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
    --head-h:78px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.9;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;line-height:1.32;letter-spacing:0;}
  h1{font-size:clamp(28px,4vw,44px);}
  h2{font-size:clamp(22px,2.6vw,32px);}
  h3{font-size:19px;}
  h4{font-size:16px;}
  p{margin:0 0 1.1em;}
  p:last-child{margin-bottom:0;}
  a{color:inherit;text-decoration:none;transition:color .2s ease, border-color .2s ease, background-color .2s ease, transform .2s ease, box-shadow .2s ease;}
  img{max-width:100%;display:block;height:auto;}
  ul,ol{margin:0;padding:0;list-style:none;}
  button,input,textarea{font:inherit;color:inherit;}
  ::selection{background:var(--accent-100);color:var(--brand-900);}
  :focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;}
  section[id]{scroll-margin-top:100px;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 32px;}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,244,238,.94);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    gap:16px;
    min-height:var(--head-h);
  }
  .nav-side{display:flex;align-items:center;gap:26px;}
  .nav-side.nav-right{justify-content:flex-end;}
  .nav-link{
    position:relative;
    font-size:15px;
    color:var(--ink-2);
    padding:6px 2px;
    white-space:nowrap;
  }
  .nav-link::after{
    content:'';
    position:absolute;left:0;right:0;bottom:0;
    height:2px;background:var(--brand-700);
    transform:scaleX(0);transform-origin:center;
    transition:transform .2s ease-out;
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link[aria-current="page"]{color:var(--brand-700);font-weight:600;}
  .nav-link[aria-current="page"]::after{transform:scaleX(1);}

  .brand{display:flex;align-items:center;gap:10px;color:var(--brand-700);}
  .brand-mark{width:40px;height:40px;flex:none;}
  .brand-text{display:flex;flex-direction:column;line-height:1.12;}
  .brand-main{font-family:var(--font-serif);font-weight:700;font-size:20px;letter-spacing:1px;}
  .brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.5px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);
    padding:13px 24px;
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .2s ease-out;
    white-space:nowrap;
  }
  .btn:disabled{opacity:.6;cursor:not-allowed;}
  .btn-primary{background:var(--brand-700);color:#fff;border-color:var(--brand-700);}
  .btn-primary:hover{background:var(--brand-900);border-color:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-1);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line);}
  .btn-ghost:hover{border-color:var(--accent-600);color:var(--accent-600);}
  .btn-ghost-light{background:transparent;color:#F3F7F4;border-color:rgba(243,247,244,.5);}
  .btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08);}
  .btn-sm{padding:10px 18px;font-size:14px;}
  .btn-block{width:100%;}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:14.5px;padding:0;}
  .btn-text svg{transition:transform .2s ease-out;}
  .btn-text:hover{color:var(--accent-600);}
  .btn-text:hover svg{transform:translateX(6px);}

  .menu-toggle{
    display:none;
    flex-direction:column;justify-content:center;gap:5px;
    width:42px;height:42px;padding:0 9px;
    background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  }
  .menu-toggle span{display:block;height:2px;background:var(--brand-700);border-radius:2px;}
  .mobile-cta{display:none;}

  .mobile-menu{
    border-bottom:1px solid var(--line);
    background:var(--surface);
    box-shadow:var(--shadow-1);
  }
  .mobile-menu-inner{padding-top:14px;padding-bottom:20px;display:flex;flex-direction:column;gap:4px;}
  .m-link{
    display:block;padding:14px 4px;font-size:16px;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .m-link:hover{color:var(--brand-700);}
  .m-link.is-active{color:var(--brand-700);font-weight:600;}
  .mobile-menu .btn{margin-top:16px;}
  .m-note{font-size:13px;color:var(--ink-3);margin:14px 0 0;}

  /* ---------- page head ---------- */
  .page-head{
    position:relative;
    overflow:hidden;
    padding:44px 0 52px;
    border-bottom:1px solid var(--line);
    background:linear-gradient(140deg,#FBF9F4 0%,var(--paper) 58%,#F2EEE4 100%);
  }
  .page-head::before{
    content:'';
    position:absolute;inset:0;
    background-image:
      repeating-linear-gradient(to right, rgba(31,92,74,.06) 0 1px, transparent 1px 84px),
      repeating-linear-gradient(to bottom, rgba(31,92,74,.06) 0 1px, transparent 1px 84px);
    pointer-events:none;
  }
  .page-head::after{
    content:'南';
    position:absolute;right:-30px;bottom:-70px;
    font-family:var(--font-serif);font-size:280px;line-height:1;
    color:rgba(22,48,42,.045);
    pointer-events:none;
  }
  .page-head .container{position:relative;z-index:2;}
  .crumbs{font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:18px;}
  .crumbs a:hover{color:var(--brand-700);}
  .crumbs .sep{color:var(--line);}
  .page-head h1{max-width:820px;}
  .page-head .lead{
    max-width:700px;margin-top:16px;color:var(--ink-2);font-size:16.5px;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .tag{
    display:inline-flex;align-items:center;
    padding:7px 16px;border-radius:999px;font-size:13.5px;
    border:1px solid var(--line);color:var(--ink-2);background:rgba(255,255,255,.7);
  }
  .tag:hover{border-color:var(--accent-600);color:var(--accent-600);}
  .tag.is-on{background:var(--brand-700);border-color:var(--brand-700);color:#fff;font-weight:600;}

  /* ---------- sections ---------- */
  .band{padding:56px 0;}
  @media (min-width:768px){.band{padding:76px 0;}}
  .sec-head{max-width:760px;margin-bottom:34px;}
  .sec-head .kicker{
    display:flex;align-items:center;gap:10px;
    font-size:13px;letter-spacing:2px;color:var(--accent-600);font-weight:600;margin-bottom:12px;
  }
  .sec-head .kicker::before{content:'';width:20px;height:3px;background:var(--accent-600);border-radius:2px;display:block;}
  .sec-head p{color:var(--ink-2);margin-top:14px;font-size:16px;}
  .sec-head-row{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:space-between;max-width:none;}

  /* ---------- stat bar ---------- */
  .stat-bar{
    background:var(--brand-900);
    color:#DCE7E0;
    padding:40px 0;
  }
  .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;}
  @media (min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
  .stat-cell{padding:14px 20px;border-left:1px solid rgba(220,231,224,.18);}
  .stat-cell:first-child{border-left:0;}
  @media (max-width:899px){
    .stat-cell:nth-child(odd){border-left:0;padding-left:0;}
    .stat-cell{padding:16px 18px;}
  }
  .stat-num{
    font-family:var(--font-serif);
    font-size:clamp(32px,4vw,50px);
    line-height:1.1;color:#fff;
    font-variant-numeric:tabular-nums;
  }
  .stat-num small{font-size:16px;font-family:var(--font-sans);font-weight:500;margin-left:4px;color:#AFC7BB;}
  .stat-label{font-size:13.5px;color:#AFC7BB;margin-top:6px;}
  .stat-note{
    margin-top:26px;padding-top:20px;border-top:1px solid rgba(220,231,224,.15);
    font-size:14px;color:#AFC7BB;
  }

  /* ---------- tile grid ---------- */
  .tile-grid{display:grid;grid-template-columns:1fr;gap:22px;}
  @media (min-width:768px){
    .tile-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
    .tile-grid > .tile:nth-child(even){transform:translateY(34px);}
    .tile-grid.offset-reset > .tile:nth-child(even){transform:none;}
  }
  .tile{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-1);
    transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out;
    display:flex;flex-direction:column;
  }
  .tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DAD1C0;}
  .tile-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFEAE0;}
  .tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
  .tile:hover .tile-media img{transform:scale(1.03);}
  .tile-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .badge{
    display:inline-flex;align-items:center;
    align-self:flex-start;
    background:var(--accent-100);color:var(--accent-600);
    font-size:13px;font-weight:600;
    padding:5px 12px;border-radius:999px;
  }
  .tile h3{font-size:19px;line-height:1.45;}
  .tile h3 a:hover{color:var(--brand-700);}
  .tile p{color:var(--ink-2);font-size:15px;line-height:1.8;}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .tile-foot{
    margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
  }
  .tile-foot time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-700);font-weight:600;}
  .arrow-link svg{transition:transform .2s ease-out;}
  .arrow-link:hover{color:var(--accent-600);}
  .arrow-link:hover svg{transform:translateX(5px);}

  .divider-row{
    display:flex;align-items:center;gap:18px;
    margin:52px 0 30px;
  }
  .divider-row::after{content:'';flex:1;height:1px;background:var(--line);}
  .divider-row span{font-size:14px;color:var(--ink-3);white-space:nowrap;}

  /* ---------- timeline ---------- */
  .timeline{position:relative;padding-left:26px;}
  .timeline::before{content:'';position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--line);}
  .tl-item{position:relative;padding:0 0 30px 0;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item::before{
    content:'';position:absolute;left:-26px;top:9px;
    width:12px;height:12px;border-radius:50%;
    background:var(--surface);border:2px solid var(--brand-500);
  }
  .tl-item:first-child::before{background:var(--accent-600);border-color:var(--accent-600);}
  .tl-step{font-family:var(--font-serif);font-size:13px;color:var(--accent-600);letter-spacing:1px;font-weight:600;}
  .tl-item h3{margin:6px 0 8px;}
  .tl-item p{color:var(--ink-2);font-size:15px;max-width:620px;}
  .tl-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 24px;box-shadow:var(--shadow-1);
  }
  .tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
  .chip{
    font-size:12.5px;color:var(--ink-3);border:1px dashed var(--line);
    border-radius:999px;padding:4px 12px;
  }

  /* ---------- tickets ---------- */
  .ticket-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){.ticket-grid{grid-template-columns:repeat(3,1fr);gap:22px;}}
  .ticket{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:26px 24px 24px 34px;
    box-shadow:var(--shadow-1);
    transition:transform .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out;
  }
  .ticket::before{
    content:'';position:absolute;left:18px;top:22px;bottom:22px;
    border-left:1px dashed #D8CFBE;
  }
  .ticket:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DAD1C0;}
  .ticket .ticket-no{
    font-family:var(--font-serif);font-size:13px;color:var(--accent-600);letter-spacing:1px;font-weight:600;
  }
  .ticket h3{margin:8px 0 10px;}
  .ticket p{color:var(--ink-2);font-size:15px;line-height:1.8;}
  .ticket ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
  .ticket li{
    position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);line-height:1.7;
  }
  .ticket li::before{
    content:'';position:absolute;left:2px;top:9px;
    width:7px;height:7px;border-radius:50%;background:var(--jade-400);
  }
  .ticket-foot{
    margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  }

  /* ---------- cta band ---------- */
  .cta-band{
    position:relative;
    color:#F1F6F3;
    padding:64px 0;
    background-image:linear-gradient(rgba(22,48,42,.93),rgba(22,48,42,.96)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
  }
  .cta-inner{display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
  .cta-band h2{color:#fff;max-width:560px;}
  .cta-band p{color:#B9CFC4;margin-top:12px;max-width:600px;font-size:15.5px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-note{font-size:13px;color:#9FB8AC;margin-top:16px;}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:820px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 4px;
    font-family:var(--font-serif);font-weight:600;font-size:17px;
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-700);}
  .faq-plus{
    flex:none;width:24px;height:24px;position:relative;
    transition:transform .2s ease-out;
  }
  .faq-plus::before,.faq-plus::after{
    content:'';position:absolute;left:50%;top:50%;background:var(--accent-600);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-plus::before{width:14px;height:2px;}
  .faq-plus::after{width:2px;height:14px;}
  .faq-item[open] .faq-plus{transform:rotate(45deg);}
  .faq-a{padding:0 40px 22px 4px;color:var(--ink-2);font-size:15.5px;line-height:1.9;}

  /* ---------- compare + dual ---------- */
  .compare{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
    overflow:hidden;
  }
  .compare-row{
    display:grid;grid-template-columns:1fr;gap:8px;
    padding:20px 24px;border-top:1px solid var(--line);
  }
  .compare-row:first-child{border-top:0;}
  @media (min-width:768px){
    .compare-row{grid-template-columns:1.1fr 1fr 1fr;align-items:center;gap:20px;}
  }
  .compare-title{font-weight:600;font-size:15.5px;}
  .compare-before,.compare-after{font-size:14.5px;color:var(--ink-2);}
  .compare-after{color:var(--brand-700);font-weight:600;}
  .compare-before span,.compare-after span{font-size:12.5px;color:var(--ink-3);display:block;font-weight:400;}
  .dual-cta{
    display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px;
  }
  @media (min-width:768px){.dual-cta{grid-template-columns:1fr 1fr;}}
  .dual-card{
    background:var(--accent-100);
    border:1px solid #EBD8C8;
    border-radius:var(--radius-card);
    padding:24px;
  }
  .dual-card.dark{background:var(--brand-900);border-color:var(--brand-900);color:#E6EFEA;}
  .dual-card h3{font-size:18px;margin-bottom:8px;}
  .dual-card.dark h3{color:#fff;}
  .dual-card p{font-size:14.5px;color:var(--ink-2);margin-bottom:16px;}
  .dual-card.dark p{color:#B9CFC4;}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--brand-900);
    color:#DCE7E0;
    padding:56px 0 0;
    margin-top:0;
  }
  .foot-grid{
    display:grid;grid-template-columns:1fr;gap:34px;
    padding-bottom:40px;
  }
  @media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}}
  .foot-brand .brand{color:#fff;}
  .foot-brand .brand-sub{color:#9FB8AC;}
  .foot-brand p{font-size:14.5px;color:#AFC7BB;max-width:320px;}
  .site-footer h4{
    font-size:15px;color:#fff;margin-bottom:16px;font-family:var(--font-sans);font-weight:600;letter-spacing:.5px;
  }
  .foot-links{display:flex;flex-direction:column;gap:10px;}
  .foot-links li{font-size:14.5px;color:#AFC7BB;}
  .foot-links a{color:#DCE7E0;}
  .foot-links a:hover{color:var(--accent-600);transform:translateX(2px);display:inline-block;}
  .foot-bottom{
    border-top:1px solid rgba(220,231,224,.15);
    padding:20px 0 26px;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:#8FA79B;
  }

  /* ---------- to top ---------- */
  .to-top{
    position:fixed;right:20px;bottom:24px;z-index:70;
    width:46px;height:46px;border-radius:50%;
    background:var(--brand-700);color:#fff;border:1px solid var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    box-shadow:var(--shadow-1);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:all .2s ease-out;cursor:pointer;
  }
  .to-top.is-on{opacity:1;visibility:visible;transform:translateY(0);}
  .to-top:hover{background:var(--brand-900);border-color:var(--brand-900);}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    :root{--head-h:64px;}
    .header-inner{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
    }
    .nav-side{display:none;}
    .menu-toggle{display:flex;order:1;}
    .brand{order:2;}
    .brand-mark{width:34px;height:34px;}
    .brand-main{font-size:18px;}
    .mobile-cta{display:inline-flex;order:3;padding:9px 14px;font-size:13.5px;}
  }
  @media (max-width:767px){
    body{font-size:16px;line-height:1.85;}
    .band{padding:48px 0;}
    .page-head{padding:30px 0 40px;}
    .page-head::after{font-size:190px;bottom:-56px;}
    .stat-bar{padding:32px 0;}
    .cta-band{padding:48px 0;}
    .foot-bottom{flex-direction:column;align-items:flex-start;}
    .tile-grid > .tile:nth-child(even){transform:none;}
    .faq-a{padding-right:8px;}
    .to-top{right:14px;bottom:16px;}
  }
  @media (max-width:520px){
    .tag{font-size:13px;padding:6px 13px;}
    .tile-body{padding:18px 18px 20px;}
    .ticket{padding:22px 18px 20px 30px;}
    .ticket::before{left:15px;}
    .btn{padding:12px 18px;}
  }