/* roulang page: index */
:root{
  --ink:#231B16;
  --ink-soft:#5C4D42;
  --tea:#6B4A2F;
  --tea-deep:#3A2618;
  --celadon:#7E9A86;
  --amber:#C08A3D;
  --amber-deep:#A9712C;
  --paper:#F8F4EC;
  --paper-2:#EFE7D8;
  --line:#DCCFBB;
  --white:#FFFFFF;
  --danger:#B4462F;
  --shadow-1:0 1px 2px rgba(58,38,24,.06),0 8px 24px -12px rgba(58,38,24,.18);
  --shadow-2:0 2px 4px rgba(58,38,24,.08),0 18px 40px -18px rgba(58,38,24,.28);
  --r-card:16px;
  --r-sm:10px;
  --r-lg:24px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink);background:var(--paper);
}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--tea);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--amber)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:.01em}
p{margin:0 0 .9em}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(58,38,24,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-seal{
  width:42px;height:42px;border-radius:12px;background:var(--tea);color:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;letter-spacing:0;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:12px;color:var(--ink-soft);letter-spacing:.04em}
.main-nav{display:none;align-items:center;gap:6px;margin-left:12px}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink-soft);
  transition:color .16s ease,background .16s ease;
}
.nav-link:hover{color:var(--tea);background:var(--paper-2)}
.nav-link.is-active{color:var(--tea);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--tea);border-radius:2px;
}
.header-actions{display:none;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.header-actions{display:flex}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--amber);color:var(--tea-deep);box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--amber-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--tea);color:var(--tea);background:transparent}
.btn-ghost:hover{background:var(--paper-2);color:var(--tea)}
.btn-ghost-light{border-color:rgba(248,244,236,.55);color:var(--paper);background:transparent}
.btn-ghost-light:hover{background:rgba(248,244,236,.12);color:#fff}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--tea)}
.link-more span{transition:transform .18s ease}
.link-more:hover span{transform:translateX(3px)}
.link-more:hover{color:var(--amber-deep);text-decoration:underline;text-underline-offset:3px}

/* ---------- generic section ---------- */
.sec{padding:44px 0}
@media(min-width:768px){.sec{padding:60px 0}}
@media(min-width:1024px){.sec{padding:80px 0}}
.sec-white{background:var(--white)}
.sec-paper{background:var(--paper)}
.sec-soft{background:var(--paper-2)}
.sec-deep{background:var(--tea-deep);color:#F3EDE3}
.sec-deep h2,.sec-deep h3{color:#F8F4EC}
.sec-deep p{color:rgba(243,237,227,.78)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-title{position:relative;padding-left:16px;font-size:26px}
@media(min-width:1024px){.sec-title{font-size:32px}}
.sec-title::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:2px;background:var(--tea);
}
.sec-deep .sec-title::before{background:var(--amber)}
.sec-lead{max-width:760px;margin:14px 0 0;color:var(--ink-soft);font-size:15.5px;line-height:1.85}
.sec-deep .sec-lead{color:rgba(243,237,227,.8)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(126,154,134,.14);color:#3F5A49;border:1px solid rgba(126,154,134,.32);
}
.badge-amber{background:rgba(192,138,61,.14);color:#8A5F22;border-color:rgba(192,138,61,.34)}
.badge-dot::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--amber);
  animation:pulse 1.8s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--paper) url('/assets/images/0beee26ed2524306.jpg') center/cover no-repeat;
  border-bottom:1px solid var(--line);overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(248,244,236,.98) 0%,rgba(248,244,236,.94) 46%,rgba(248,244,236,.62) 100%);
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:44px 0 36px}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:52px;padding:72px 0 60px;align-items:center}
}
.hero-title{
  font-size:30px;line-height:1.3;margin:16px 0 14px;max-width:16em;
  font-family:"Songti SC","SimSun","PingFang SC",serif;font-weight:700;
}
@media(min-width:768px){.hero-title{font-size:38px}}
@media(min-width:1024px){.hero-title{font-size:46px}}
.hero-sub{font-size:16px;font-weight:600;color:var(--tea);margin-bottom:14px}
@media(min-width:1024px){.hero-sub{font-size:18px}}
.hero-text{font-size:15.5px;color:var(--ink-soft);max-width:640px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 26px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:14px 32px;padding-top:20px;border-top:1px dashed var(--line)}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.hero-metrics strong{
  font-size:24px;color:var(--tea-deep);font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.hero-metrics span{font-size:12.5px;color:var(--ink-soft)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.float-card{
  position:absolute;right:12px;bottom:-18px;width:min(260px,84%);
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  box-shadow:var(--shadow-2);
}
@media(min-width:1024px){.float-card{right:-14px;bottom:-24px}}
.float-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.float-head span{font-size:13px;font-weight:700;color:var(--tea)}
.float-head em{font-style:normal;font-size:12px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.float-card p{font-size:12.5px;line-height:1.6;color:var(--ink-soft);margin:0 0 6px;padding-left:10px;position:relative}
.float-card p:last-child{margin-bottom:0}
.float-card p::before{content:"";position:absolute;left:0;top:8px;width:4px;height:4px;border-radius:50%;background:var(--celadon)}
.hero-strip{position:relative;z-index:1;background:var(--paper-2);border-top:1px solid var(--line);padding:12px 0;font-size:13.5px;color:var(--ink-soft)}

/* ---------- board ---------- */
.board-grid{
  display:grid;grid-template-columns:1fr;gap:1px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);overflow:hidden;
}
@media(min-width:768px){.board-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.board-grid{grid-template-columns:repeat(4,1fr)}}
.board-item{background:var(--tea-deep);padding:28px 24px}
.board-num{
  display:block;font-size:40px;font-weight:700;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.1;
}
@media(min-width:1024px){.board-num{font-size:46px}}
.board-item h3{font-size:16px;margin:10px 0 6px;color:#F8F4EC}
.board-item p{font-size:12.5px;color:rgba(243,237,227,.62);margin:0;line-height:1.65}

/* ---------- update strip ---------- */
.sec-strip{background:var(--paper-2);border-bottom:1px solid var(--line);padding:22px 0}
.strip-inner{display:grid;grid-template-columns:1fr;gap:16px;align-items:center}
@media(min-width:1024px){.strip-inner{grid-template-columns:280px 1fr auto;gap:28px}}
.strip-title{font-size:17px;color:var(--tea-deep);padding-left:12px;border-left:3px solid var(--amber);line-height:1.4}
.strip-list{display:grid;grid-template-columns:1fr;gap:6px}
@media(min-width:768px){.strip-list{grid-template-columns:repeat(2,1fr);gap:6px 24px}}
@media(min-width:1024px){.strip-list{grid-template-columns:repeat(2,1fr)}}
.strip-list li{font-size:13px;color:var(--ink-soft);display:flex;gap:8px;align-items:baseline}
.strip-list .t{color:var(--tea);font-weight:600;font-variant-numeric:tabular-nums;flex:0 0 auto}

/* ---------- service matrix ---------- */
.matrix{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.matrix{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.matrix{grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(168px,auto)}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(107,74,47,.4)}
.card-ico{
  width:42px;height:42px;border-radius:11px;background:rgba(107,74,47,.1);color:var(--tea);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.card-ico svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink-soft);line-height:1.7;margin-bottom:14px}
.card .link-more{margin-top:auto;font-size:13.5px}
.card-big{overflow:hidden;padding:0}
@media(min-width:1024px){.card-big{grid-column:span 2;grid-row:span 2}}
.card-big img{width:100%;aspect-ratio:16/9;border-bottom:1px solid var(--line)}
.card-big .card-big-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card-big h3{font-size:21px}
.card-big ul{margin:6px 0 18px}
.card-big li{font-size:14px;color:var(--ink-soft);padding-left:18px;position:relative;margin-bottom:6px}
.card-big li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:rgba(126,154,134,.28);border:1.5px solid var(--celadon);
}
.card-big .btn{margin-top:auto;align-self:flex-start}

/* ---------- category tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:768px){.tiles{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1024px){.tiles{grid-template-columns:repeat(4,1fr)}}
.tile{
  display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:14px;
  background:#fff;border:1px solid rgba(126,154,134,.45);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease;
}
.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:var(--celadon);background:#fff}
.tile span.tile-name{font-size:15px;font-weight:600;color:var(--ink)}
.tile span.tile-count{font-size:12.5px;color:var(--celadon);font-variant-numeric:tabular-nums}
.tile.is-plain{cursor:default}
.tile.is-plain:hover{transform:none;box-shadow:none}
.tile.is-plain:hover span.tile-name{color:var(--ink)}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr;gap:28px;position:relative}
@media(min-width:768px){.compare{grid-template-columns:1fr 1fr;gap:48px}}
@media(min-width:768px){.compare::after{content:"";position:absolute;left:50%;top:6px;bottom:6px;width:1px;background:var(--line)}}
.compare-col h3{font-size:18px;margin-bottom:16px}
.compare-col li{
  font-size:14.5px;color:var(--ink-soft);padding:11px 0 11px 26px;position:relative;
  border-bottom:1px dashed var(--line);
}
.compare-col li:last-child{border-bottom:0}
.compare-bad li::before{
  content:"—";position:absolute;left:0;top:11px;color:#B4A594;font-weight:700;
}
.compare-good li{color:var(--ink)}
.compare-good li::before{
  content:"✓";position:absolute;left:0;top:11px;color:var(--celadon);font-weight:700;
}
.compare-note{margin-top:26px;font-size:13.5px;color:var(--ink-soft);text-align:center}

/* ---------- city ---------- */
.city-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.city-grid{grid-template-columns:1.4fr 1fr;gap:36px}}
.city-tags{display:flex;flex-wrap:wrap;gap:9px}
.city-tags span{
  padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-soft);
}
.store-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1)}
.store-card h3{font-size:19px;margin-bottom:12px}
.store-card dl{margin:0 0 18px}
.store-card dt{font-size:12.5px;color:var(--celadon);margin-top:10px}
.store-card dd{margin:0;font-size:14px;color:var(--ink-soft)}
.store-card .btn{width:100%}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:1fr;gap:0;position:relative}
@media(min-width:768px){.timeline{grid-template-columns:repeat(4,1fr);gap:24px}}
.tl-node{position:relative;padding:0 0 26px 30px;border-left:1px solid var(--line)}
@media(min-width:768px){.tl-node{padding:26px 0 0;border-left:0;border-top:1px solid var(--line)}}
.tl-node::before{
  content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--tea);
  border:2px solid var(--paper);left:-6px;top:2px;
}
@media(min-width:768px){.tl-node::before{left:0;top:-6px}}
.tl-node strong{display:block;font-size:20px;color:var(--amber-deep);font-variant-numeric:tabular-nums;margin-bottom:6px}
.tl-node h3{font-size:16px;margin-bottom:6px}
.tl-node p{font-size:13.5px;color:var(--ink-soft);margin:0}

/* ---------- team ---------- */
.team{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.team{grid-template-columns:repeat(2,1fr)}}
.member{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px;transition:border-color .18s ease,box-shadow .18s ease}
.member:hover{border-color:rgba(126,154,134,.7);box-shadow:var(--shadow-1)}
.member img{width:76px;height:76px;border-radius:12px;border:1px solid var(--line);flex:0 0 auto}
.member h3{font-size:16px;margin-bottom:2px}
.member .m-tag{font-size:12.5px;color:var(--celadon);margin-bottom:6px;display:block}
.member p{font-size:13.5px;color:var(--ink-soft);margin:0;line-height:1.65}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:26px}
@media(min-width:1024px){.news-grid{grid-template-columns:2fr 1fr;gap:40px}}
.news-list{display:flex;flex-direction:column}
.news-item{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
  transition:background .18s ease,color .18s ease;
}
.news-item:hover{background:var(--paper-2)}
.news-item:hover .news-title{color:var(--tea)}
.news-thumb{width:104px;flex:0 0 auto}
@media(min-width:768px){.news-thumb{width:160px}}
.news-thumb img{width:100%;aspect-ratio:16/9;border-radius:12px;border:1px solid var(--line)}
.news-body{min-width:0;display:flex;flex-direction:column}
.news-title{font-size:15.5px;font-weight:600;color:var(--ink);margin-bottom:6px;line-height:1.5;transition:color .18s ease}
@media(min-width:768px){.news-title{font-size:17px}}
.news-excerpt{font-size:13.5px;color:var(--ink-soft);line-height:1.7;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft);margin-top:auto;flex-wrap:wrap}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.news-item.is-lead{flex-direction:column;gap:12px}
.news-item.is-lead .news-thumb{width:100%}
.news-item.is-lead .news-thumb img{aspect-ratio:2/1}
.news-item.is-lead .news-title{font-size:20px}
.news-item.is-lead .news-excerpt{-webkit-line-clamp:3}
.news-side{display:flex;flex-direction:column;gap:18px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);padding:22px}
.side-block h3{font-size:15px;margin-bottom:12px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud span{font-size:12.5px;color:var(--tea);background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 11px}
.side-note{font-size:13px;color:var(--ink-soft);margin:0}
.sub-form{display:flex;gap:8px;margin-top:10px}
.sub-form input{
  flex:1;min-width:0;height:42px;border:1px solid var(--line);border-radius:9px;padding:0 12px;
  background:#fff;font-size:13.5px;
}
.sub-form input:focus{outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px rgba(126,154,134,.22)}
.sub-form button{height:42px;padding:0 14px;border-radius:9px;border:0;background:var(--tea);color:#fff;font-size:13.5px;font-weight:600;cursor:pointer;transition:background .18s ease}
.sub-form button:hover{background:var(--tea-deep)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  min-height:180px;background:var(--paper-2);border:1px dashed var(--line);border-radius:var(--r-card);
  color:var(--ink-soft);font-size:14px;text-align:center;padding:24px;
}

/* ---------- guard ---------- */
.guard{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(min-width:1024px){.guard{grid-template-columns:repeat(4,1fr)}}
.guard-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;transition:transform .18s ease,box-shadow .18s ease}
.guard-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-1)}
.guard-item svg{width:24px;height:24px;stroke:var(--tea);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;margin-bottom:10px}
.guard-item h3{font-size:15.5px;margin-bottom:6px}
.guard-item p{font-size:13px;color:var(--ink-soft);margin:0;line-height:1.65}

/* ---------- reviews ---------- */
.reviews{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.reviews{grid-template-columns:repeat(3,1fr)}}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;position:relative}
.review::before{
  content:"“";position:absolute;top:6px;right:16px;font-size:44px;line-height:1;color:rgba(126,154,134,.35);
  font-family:Georgia,serif;
}
.review p{font-size:14px;color:var(--ink-soft);line-height:1.75;margin-bottom:16px;position:relative;z-index:1}
.review footer{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft)}
.review .nick{font-weight:600;color:var(--ink)}

/* ---------- quick answers ---------- */
.qa-list{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:1024px){.qa-list{grid-template-columns:repeat(3,1fr)}}
.qa-item{
  display:flex;align-items:center;gap:14px;background:var(--paper-2);border-radius:14px;
  padding:16px 18px;color:var(--ink);transition:background .18s ease,transform .18s ease;border:1px solid transparent;
}
.qa-item:hover{background:#fff;border-color:var(--line);transform:translateY(-1px)}
.qa-item strong{font-size:14.5px;flex:0 0 auto}
.qa-item span{font-size:13.5px;color:var(--ink-soft);flex:1;min-width:0}
.qa-item .arrow{color:var(--amber);font-weight:700;flex:0 0 auto}

/* ---------- 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-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;transition:color .18s ease,padding .18s ease;
}
.faq-q:hover{color:var(--tea)}
.faq-q .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .2s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--tea);border-radius:1px;
}
.faq-q .plus::before{left:0;right:0;top:10px;height:2px}
.faq-q .plus::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .2s ease}
.faq-item.is-open .faq-q{padding-left:14px;color:var(--tea)}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:2px;background:var(--amber);
}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;font-size:14.5px;color:var(--ink-soft)}
.faq-a p{padding:0 0 20px;margin:0;line-height:1.8}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.form-grid{grid-template-columns:1fr 1.1fr;gap:56px;align-items:start}}
.form-copy h2{color:#F8F4EC}
.form-copy p{color:rgba(243,237,227,.8);font-size:14.5px}
.form-copy ul{margin-top:18px}
.form-copy li{display:flex;gap:10px;font-size:14px;color:rgba(243,237,227,.85);padding:8px 0;border-bottom:1px dashed rgba(243,237,227,.18)}
.form-copy li::before{content:"·";color:var(--amber);font-weight:700}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-2)}
@media(min-width:768px){.form-card{padding:30px}}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 14px;
  background:#fff;font-size:14.5px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:96px;padding:12px 14px;line-height:1.6;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px rgba(126,154,134,.22);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:520px){.field-row{grid-template-columns:1fr}}
.form-card .btn{width:100%;margin-top:6px}
.form-note{font-size:12.5px;color:var(--ink-soft);margin:12px 0 0;text-align:center}
.form-msg{display:none;margin-top:12px;font-size:13.5px;color:#3F5A49;background:rgba(126,154,134,.14);border-radius:9px;padding:10px 12px;text-align:center}
.form-msg.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--tea-deep);color:rgba(243,237,227,.78);padding:48px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.site-footer h4{color:#F8F4EC;font-size:14.5px;margin-bottom:14px;letter-spacing:.04em}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .brand-seal{background:var(--amber);color:var(--tea-deep)}
.footer-brand .brand-name{color:#F8F4EC}
.footer-brand .brand-sub{color:rgba(243,237,227,.6)}
.site-footer p{font-size:13.5px;line-height:1.8;margin:0 0 10px;color:rgba(243,237,227,.7)}
.site-footer ul li{margin-bottom:9px}
.site-footer ul a{color:rgba(243,237,227,.78);font-size:13.5px}
.site-footer ul a:hover{color:var(--amber)}
.footer-flag{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:rgba(243,237,227,.62);margin-top:6px}
.footer-flag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--celadon)}
.footer-bottom{
  border-top:1px solid rgba(243,237,227,.16);padding:18px 0;
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(243,237,227,.55);
}
.footer-bottom a{color:rgba(243,237,227,.7)}
.footer-bottom a:hover{color:var(--amber)}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:1024px){.mobile-tab{display:none}}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:58px;font-size:11.5px;color:var(--ink-soft);position:relative;
}
.mobile-tab svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.is-active{color:var(--tea);font-weight:600}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;background:var(--tea);
}
@media(max-width:1023px){body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}}

/* roulang page: category1 */
:root{
  --ink:#231B16;
  --ink-soft:#5C4D42;
  --tea:#6B4A2F;
  --tea-deep:#3A2618;
  --celadon:#7E9A86;
  --amber:#C08A3D;
  --amber-deep:#A9712C;
  --paper:#F8F4EC;
  --paper-2:#EFE7D8;
  --line:#DCCFBB;
  --white:#FFFFFF;
  --danger:#B4462F;
  --shadow-1:0 1px 2px rgba(58,38,24,.06),0 8px 24px -12px rgba(58,38,24,.18);
  --shadow-2:0 2px 4px rgba(58,38,24,.08),0 18px 40px -18px rgba(58,38,24,.28);
  --r-card:16px;
  --r-sm:10px;
  --r-lg:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink);background:var(--paper);
  padding-bottom:calc(66px + env(safe-area-inset-bottom));
}
@media (min-width:1024px){body{padding-bottom:0}}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--tea);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--amber)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(58,38,24,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:60px}
@media (min-width:1024px){
  .header-inner{height:72px}
  .site-header.is-scrolled .header-inner{height:64px}
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-seal{
  width:38px;height:38px;border-radius:11px;background:var(--tea);color:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;letter-spacing:0;flex:0 0 auto;
}
@media (min-width:1024px){.brand-seal{width:42px;height:42px;border-radius:12px;font-size:20px}}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--ink-soft);letter-spacing:.04em}
@media (min-width:1024px){
  .brand-name{font-size:17px}
  .brand-sub{font-size:12px}
}
.main-nav{display:none;align-items:center;gap:4px;margin-left:12px}
.nav-link{
  position:relative;padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink-soft);
  transition:color .16s ease,background .16s ease;
}
.nav-link:hover{color:var(--tea);background:var(--paper-2)}
.nav-link.is-active{color:var(--tea);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--tea);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.header-actions .btn-ghost{display:none}
@media (min-width:1024px){
  .main-nav{display:flex}
  .header-actions{gap:10px}
  .header-actions .btn-ghost{display:inline-flex}
}
@media (max-width:1023px){
  .header-actions .btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:8px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--amber);color:var(--tea-deep);box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--amber-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--tea);color:var(--tea);background:transparent}
.btn-ghost:hover{background:var(--paper-2);color:var(--tea)}
.btn-ghost-light{border-color:rgba(248,244,236,.55);color:var(--paper);background:transparent}
.btn-ghost-light:hover{background:rgba(248,244,236,.14);color:#fff}
.btn-block{width:100%}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(126,154,134,.14);color:#3F5A49;border:1px solid rgba(126,154,134,.32);
}
.badge-amber{background:rgba(192,138,61,.14);color:#8A5F22;border-color:rgba(192,138,61,.34)}
.badge-dot::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);
  animation:pulse 1.8s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.85)}}

/* ---------- generic section ---------- */
.sec{padding:44px 0}
@media (min-width:1024px){.sec{padding:72px 0}}
.sec-white{background:var(--white)}
.sec-paper{background:var(--paper)}
.sec-tint{background:var(--paper-2)}
.sec-line{border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:26px}
.sec-title{position:relative;padding-left:16px;font-size:24px;line-height:1.35;font-weight:700}
@media (min-width:768px){.sec-title{font-size:30px}}
.sec-title::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--tea);
}
.sec-lead{max-width:760px;margin-top:12px;color:var(--ink-soft);font-size:15px;line-height:1.85}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--tea)}
.text-link .arrow{transition:transform .18s ease}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- category head ---------- */
.cat-head{background:var(--paper-2);border-bottom:1px solid var(--line);padding:28px 0 30px}
@media (min-width:1024px){.cat-head{padding:40px 0 32px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin-bottom:14px}
.crumb a{color:var(--ink-soft)}
.crumb a:hover{color:var(--tea)}
.crumb i{font-style:normal;color:#BCAA92}
.crumb .current{color:var(--tea);font-weight:600}
.cat-h1{
  font-size:27px;line-height:1.32;font-weight:700;letter-spacing:.01em;
  font-family:"Songti SC","SimSun","PingFang SC",serif;
  margin-bottom:12px;
}
@media (min-width:768px){.cat-h1{font-size:36px}}
@media (min-width:1024px){.cat-h1{font-size:42px}}
.cat-desc{max-width:780px;color:var(--ink-soft);font-size:15px;line-height:1.85}
@media (min-width:768px){.cat-desc{font-size:15.5px}}
.cat-meta{
  display:flex;flex-wrap:wrap;gap:8px 26px;margin-top:18px;padding-top:16px;
  border-top:1px dashed #CDBDA4;font-size:13px;color:var(--ink-soft);
}
.cat-meta strong{color:var(--tea-deep);font-variant-numeric:tabular-nums;font-weight:700}

/* ---------- stats strip ---------- */
.stat-strip{background:var(--paper);border-bottom:1px solid var(--line);padding:22px 0}
.stat-row{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
@media (min-width:768px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{background:var(--paper);padding:14px 16px}
@media (min-width:1024px){.stat-cell{padding:18px 20px}}
.stat-cell b{
  display:block;font-size:23px;line-height:1.2;color:var(--tea-deep);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
@media (min-width:1024px){.stat-cell b{font-size:27px}}
.stat-cell span{display:block;margin-top:4px;font-size:12.5px;color:var(--ink-soft)}

/* ---------- list layout ---------- */
.cat-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:30px;align-items:start}
@media (min-width:1024px){.cat-layout{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px}}
.note-list{display:block}
.note-item{
  display:grid;grid-template-columns:104px minmax(0,1fr);gap:14px;
  padding:18px 12px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.note-item:first-child{padding-top:0}
.note-item:hover{background:var(--paper-2)}
@media (min-width:640px){.note-item{grid-template-columns:200px minmax(0,1fr);gap:20px;padding:20px 12px}}
.note-thumb{
  display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:var(--paper-2);
}
.note-thumb img{width:100%;height:100%;transition:transform .35s ease}
.note-item:hover .note-thumb img{transform:scale(1.04)}
.note-body{min-width:0}
.note-title{font-size:16.5px;line-height:1.5;font-weight:700;margin-bottom:6px}
@media (min-width:640px){.note-title{font-size:19px}}
.note-title a{color:var(--ink)}
.note-title a:hover{color:var(--tea)}
.note-excerpt{
  color:var(--ink-soft);font-size:14px;line-height:1.72;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
@media (min-width:640px){.note-excerpt{font-size:14.5px}}
.note-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:12.5px;color:var(--ink-soft)}
.note-meta time{font-variant-numeric:tabular-nums}

/* ---------- sidebar ---------- */
.cat-side{display:flex;flex-direction:column;gap:16px}
@media (min-width:1024px){.cat-side{position:sticky;top:92px}}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:15.5px;font-weight:700;margin-bottom:10px;color:var(--ink)}
.side-card p{font-size:14px;line-height:1.75;color:var(--ink-soft)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:4px 10px;border-radius:999px;
  background:var(--paper-2);color:var(--ink-soft);font-size:12.5px;
  border:1px solid transparent;
}
.tag:hover{border-color:rgba(126,154,134,.5);color:#3F5A49}
.mini-form{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.mini-form input{
  height:44px;border-radius:10px;border:1.5px solid var(--line);background:var(--white);
  padding:0 13px;font-size:14px;transition:border-color .18s ease,box-shadow .18s ease;
}
.mini-form input::placeholder{color:#A6967F}
.mini-form input:focus{outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px rgba(126,154,134,.22)}
.mini-form .btn{height:44px;font-size:14px;width:100%}
.form-tip{font-size:12.5px;color:var(--ink-soft);min-height:18px}

/* ---------- reading path ---------- */
.path-steps{display:grid;gap:14px;max-width:840px}
.path-step{
  display:grid;grid-template-columns:46px minmax(0,1fr);gap:14px;align-items:start;
  background:var(--white);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.path-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(107,74,47,.35)}
.path-num{
  font-size:21px;font-weight:700;color:var(--amber);line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.path-step h3{font-size:16px;font-weight:700;margin-bottom:4px}
.path-step p{font-size:14px;color:var(--ink-soft);line-height:1.7}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
@media (min-width:768px){.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}}
.feature-card{
  background:var(--white);border:1px solid var(--line);border-left:4px solid var(--celadon);
  border-radius:12px;padding:18px 20px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.feature-card h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:8px}
.feature-card h3 a{color:var(--ink)}
.feature-card h3 a:hover{color:var(--tea)}
.feature-card p{font-size:14px;color:var(--ink-soft);line-height:1.72}
.feature-card .fc-meta{margin-top:12px;font-size:12.5px;color:#8A7862;font-variant-numeric:tabular-nums}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:768px){.compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}}
.compare-col{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:20px 22px}
.compare-col h3{font-size:17px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.compare-col h3 span{display:inline-block;width:8px;height:8px;border-radius:50%;background:#BCAA92}
.compare-col.good h3 span{background:var(--celadon)}
.compare-list li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:14.5px;line-height:1.72;color:var(--ink-soft);
}
.compare-list li:last-child{margin-bottom:0}
.compare-list li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:50%;
  border:1.5px solid #C7B79F;background:transparent;
}
.compare-col.good .compare-list li::before{border-color:var(--celadon);background:rgba(126,154,134,.35)}
.compare-note{margin-top:18px;font-size:13.5px;color:var(--ink-soft)}

/* ---------- qa ---------- */
.qa-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
@media (min-width:768px){.qa-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}}
.qa-item{
  background:var(--white);border:1px solid var(--line);border-radius:14px;padding:18px 20px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.qa-item:hover{border-color:rgba(107,74,47,.35);box-shadow:var(--shadow-1)}
.qa-item h3{font-size:15.5px;font-weight:700;color:var(--tea-deep);margin-bottom:8px}
.qa-item p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.qa-foot{margin-top:18px;font-size:14px;color:var(--ink-soft)}

/* ---------- cta strip ---------- */
.cta-strip{background:var(--tea-deep);color:var(--paper);padding:38px 0}
@media (min-width:1024px){.cta-strip{padding:52px 0}}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;align-items:center}
@media (min-width:900px){.cta-inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px}}
.cta-inner h2{font-size:23px;line-height:1.4;font-weight:700;margin-bottom:10px}
@media (min-width:768px){.cta-inner h2{font-size:28px}}
.cta-inner p{font-size:14.5px;color:rgba(248,244,236,.78);line-height:1.8;max-width:520px}
.cta-form{display:flex;flex-wrap:wrap;gap:10px}
.cta-form input{
  flex:1 1 220px;height:48px;border-radius:10px;padding:0 14px;font-size:14.5px;
  border:1.5px solid rgba(248,244,236,.35);background:rgba(255,255,255,.08);color:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(248,244,236,.55)}
.cta-form input:focus{outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px rgba(126,154,134,.34)}
.cta-form .btn{flex:0 0 auto}
.cta-tip{width:100%;font-size:12.5px;color:rgba(248,244,236,.62);min-height:18px}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--paper-2);border:1px dashed var(--line);border-radius:16px;
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:26px;text-align:center;color:var(--ink-soft);font-size:14.5px;
}
.empty-state a{font-weight:600}

/* ---------- footer ---------- */
.site-footer{background:var(--tea-deep);color:rgba(248,244,236,.84);padding:48px 0 0}
@media (min-width:1024px){.site-footer{padding:60px 0 0}}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:30px;padding-bottom:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .brand-name{color:var(--paper)}
.footer-brand .brand-sub{color:rgba(248,244,236,.6)}
.footer-brand .brand-seal{background:rgba(248,244,236,.14);color:var(--paper)}
.site-footer h4{font-size:15px;font-weight:700;color:var(--paper);margin-bottom:14px}
.site-footer li{margin-bottom:10px;font-size:14px}
.site-footer a{color:rgba(248,244,236,.8)}
.site-footer a:hover{color:var(--amber)}
.site-footer p{font-size:14px;line-height:1.78;margin-bottom:10px;color:rgba(248,244,236,.78)}
.footer-flag{
  display:inline-flex;align-items:center;gap:8px;margin-top:6px;
  font-size:12.5px;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(248,244,236,.28);color:rgba(248,244,236,.82);
}
.footer-flag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}
.footer-bottom{
  border-top:1px solid rgba(248,244,236,.16);padding:18px 0 calc(24px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12.5px;color:rgba(248,244,236,.62);
}
@media (min-width:1024px){.footer-bottom{padding-bottom:24px}}
.footer-bottom a{color:rgba(248,244,236,.72)}

/* ---------- mobile tabs ---------- */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -16px rgba(58,38,24,.55);
  backdrop-filter:blur(8px);
}
@media (min-width:1024px){.mobile-tabs{display:none}}
.tab-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;min-height:56px;font-size:11.5px;color:var(--ink-soft);
  transition:color .16s ease;
}
.tab-link svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-link.is-active{color:var(--tea);font-weight:700}
.tab-link.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;border-radius:0 0 2px 2px;background:var(--tea);
}

/* roulang page: article */
:root{
  --ink:#231B16;
  --ink-soft:#5C4D42;
  --tea:#6B4A2F;
  --tea-deep:#3A2618;
  --celadon:#7E9A86;
  --amber:#C08A3D;
  --amber-deep:#A9712C;
  --paper:#F8F4EC;
  --paper-2:#EFE7D8;
  --line:#DCCFBB;
  --white:#FFFFFF;
  --danger:#B4462F;
  --shadow-1:0 1px 2px rgba(58,38,24,.06),0 8px 24px -12px rgba(58,38,24,.18);
  --shadow-2:0 2px 4px rgba(58,38,24,.08),0 18px 40px -18px rgba(58,38,24,.28);
  --r-card:16px;
  --r-sm:10px;
  --r-lg:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--paper);
}
body{padding-bottom:calc(66px + env(safe-area-inset-bottom))}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--tea);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--amber)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin-top:0}
h1,h2,h3,h4{line-height:1.3;letter-spacing:.01em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
:focus-visible{outline:2px solid var(--celadon);outline-offset:3px}
[id]{scroll-margin-top:92px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(58,38,24,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand-seal{
  width:42px;height:42px;border-radius:12px;background:var(--tea);color:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;letter-spacing:0;flex:0 0 auto;
  box-shadow:inset 0 0 0 1px rgba(248,244,236,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:210px}
.brand-sub{font-size:12px;color:var(--ink-soft);letter-spacing:.04em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 13px;border-radius:8px;font-size:15px;color:var(--ink-soft);
  transition:color .16s ease,background .16s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--tea);background:var(--paper-2)}
.nav-link.is-active{color:var(--tea);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--tea);border-radius:2px;
}
.header-actions{display:none;align-items:center;gap:10px;margin-left:auto}
.mobile-cta{display:inline-flex;margin-left:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--amber);color:var(--tea-deep);box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--amber-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--tea);color:var(--tea);background:transparent}
.btn-ghost:hover{background:var(--paper-2);color:var(--tea)}
.btn-ghost-light{border-color:rgba(248,244,236,.55);color:var(--paper);background:transparent}
.btn-ghost-light:hover{background:rgba(248,244,236,.12);color:#fff}
.btn-block{width:100%}

/* ---------- badges / meta ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(126,154,134,.14);color:#3F5A49;border:1px solid rgba(126,154,134,.32);
}
.badge-amber{background:rgba(192,138,61,.14);color:#8A5F22;border-color:rgba(192,138,61,.34)}
.badge-dot::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--amber);
  animation:pulse 1.8s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{transform:scale(1);opacity:.9}
  50%{transform:scale(.72);opacity:.5}
}
.meta{font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--tea)}
.text-link span{transition:transform .18s ease}
.text-link:hover span{transform:translateX(3px)}

/* ---------- article top / breadcrumb ---------- */
.article-top{padding-top:22px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--ink-soft)}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--tea)}
.breadcrumb .sep{color:var(--line)}
.crumb-current{max-width:min(520px,62vw);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--ink)}

/* ---------- article hero ---------- */
.article-hero{padding:28px 0 38px;border-bottom:1px solid var(--line);background:var(--paper)}
.article-hero-inner{max-width:860px}
.article-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.article-hero h1{
  margin:16px 0 14px;
  font-size:31px;
  line-height:1.32;
  font-weight:700;
  font-family:"Songti SC","SimSun","PingFang SC",serif;
  letter-spacing:.015em;
  overflow-wrap:anywhere;
}
.article-deck{max-width:720px;margin:0;font-size:16px;line-height:1.85;color:var(--ink-soft)}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding:36px 0 64px}
.article-main{min-width:0}
.article-aside{display:none}
.aside-sticky{position:sticky;top:92px}

/* ---------- cover / key points ---------- */
.cover{margin:0 0 24px}
.cover img{
  width:100%;aspect-ratio:16/9;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  background:var(--paper-2);
}
.cover figcaption{margin-top:9px;text-align:center;font-size:13px;color:var(--ink-soft);line-height:1.7}
.key-points{
  margin-top:22px;padding:20px 22px;
  background:var(--paper-2);
  border-left:3px solid var(--amber);
  border-radius:0 14px 14px 0;
}
.key-points h2{margin:0 0 10px;font-size:17px;color:var(--ink)}
.key-points ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.key-points li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75;color:var(--ink-soft)}
.key-points li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;
  border-radius:2px;background:var(--celadon);
}

/* ---------- article body ---------- */
.article-content{margin-top:34px;max-width:760px}
.article-body{font-size:17px;line-height:1.85;color:var(--ink);overflow-wrap:anywhere}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:25px;line-height:1.38;font-weight:700;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:2px;background:var(--tea);
}
.article-body h3{margin:28px 0 12px;font-size:20px;font-weight:700}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:700}
.article-body p{margin:0 0 1.05em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body li{margin-bottom:.45em}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--celadon);
  background:var(--paper-2);border-radius:0 12px 12px 0;color:var(--ink-soft);
}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:8px}
.article-body a{color:var(--tea);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--amber)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body code{background:var(--paper-2);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:var(--paper-2)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.empty-state{
  min-height:190px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  margin-top:20px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-card);text-align:center;padding:24px;
}
.empty-state p{margin:0;color:var(--ink-soft);font-size:15px}
.empty-state a{font-weight:600}

/* ---------- summary ---------- */
.summary-card{
  margin-top:38px;padding:24px;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r-card);
}
.summary-card h2{margin:0 0 12px;font-size:22px}
.summary-card p{margin:0 0 12px;color:var(--ink-soft);font-size:15px;line-height:1.8}
.summary-card ul{margin:0;padding-left:1.2em;color:var(--ink-soft);font-size:14.5px;line-height:1.8}
.summary-card li{margin-bottom:.35em}

/* ---------- author ---------- */
.author-card{
  display:flex;align-items:flex-start;gap:18px;
  margin-top:30px;padding:22px;
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.author-avatar{
  width:72px;height:72px;flex:0 0 auto;border-radius:12px;
  border:1px solid var(--line);object-fit:cover;background:var(--paper-2);
}
.author-body{min-width:0}
.author-card h2{margin:0 0 4px;font-size:18px}
.author-role{margin:0 0 8px;color:var(--celadon);font-size:13px;font-weight:600}
.author-desc{margin:0 0 10px;color:var(--ink-soft);font-size:14px;line-height:1.75}

/* ---------- faq ---------- */
.faq{margin-top:38px}
.faq h2{margin:0 0 6px;font-size:24px}
.faq-lead{margin:0 0 14px;color:var(--ink-soft);font-size:14.5px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;cursor:pointer;list-style:none;font-weight:600;font-size:15.5px;
  transition:color .18s ease;
}
.faq-item summary:hover{color:var(--tea)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{flex:0 0 auto;color:var(--tea);font-size:20px;line-height:1;transition:transform .2s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 0 18px;color:var(--ink-soft);font-size:15px;line-height:1.8}

/* ---------- cta strip ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:40px;padding:30px 28px;border-radius:var(--r-lg);
  background:var(--tea-deep);color:var(--paper);
  box-shadow:var(--shadow-2);
}
.cta-strip h2{margin:0 0 6px;color:var(--paper);font-size:24px}
.cta-strip p{margin:0;color:rgba(243,237,227,.78);font-size:14.5px;line-height:1.75}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- tags ---------- */
.tag-section{margin-top:36px}
.tag-section h2{margin:0 0 12px;font-size:18px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);color:var(--ink-soft);font-size:13px;
}

/* ---------- aside ---------- */
.aside-card{
  margin-bottom:18px;padding:18px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.aside-card h2{margin:0 0 12px;font-size:15px;letter-spacing:.02em}
.toc{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.toc a{
  display:block;padding:8px 10px;border-left:2px solid transparent;border-radius:6px;
  font-size:14px;color:var(--ink-soft);transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.toc a:hover{background:var(--paper-2);color:var(--tea);border-left-color:var(--amber)}
.store-info p{margin:0 0 8px;color:var(--ink-soft);font-size:13.5px;line-height:1.7}
.store-info .btn{width:100%;margin-top:6px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;padding:48px 0 0;background:var(--tea-deep);color:var(--paper);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.site-footer .brand-seal{background:var(--paper);color:var(--tea-deep);box-shadow:none}
.site-footer .brand-name{color:var(--paper);max-width:none}
.site-footer .brand-sub{color:rgba(248,244,236,.6)}
.site-footer p{margin:0 0 8px;font-size:13.5px;line-height:1.8;color:rgba(248,244,236,.7)}
.site-footer h4{margin:0 0 12px;font-size:14px;color:var(--paper)}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a{color:rgba(248,244,236,.72);font-size:13.5px}
.site-footer a:hover{color:var(--amber)}
.footer-flag{
  display:inline-flex;margin-top:10px;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(248,244,236,.25);font-size:12px;color:rgba(248,244,236,.8);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  margin-top:36px;padding:18px 0 24px;border-top:1px solid rgba(248,244,236,.14);
  font-size:12.5px;color:rgba(248,244,236,.55);
}
.footer-bottom a{color:rgba(248,244,236,.75)}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -18px rgba(58,38,24,.5);
}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:58px;color:var(--ink-soft);font-size:11.5px;line-height:1.2;
  transition:color .16s ease,background .16s ease;
}
.tab-item:hover{color:var(--tea);background:rgba(239,231,216,.45)}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tab-item.is-active{color:var(--tea);font-weight:600}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;width:22px;height:2px;
  background:var(--amber);border-radius:2px;
}

/* ---------- responsive ---------- */
@media (min-width:768px){
  .brand-name{max-width:none;font-size:18px}
  .article-hero h1{font-size:38px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
  .article-layout{padding-top:42px}
}
@media (min-width:900px){
  body{padding-bottom:0}
  .main-nav{display:flex}
  .header-actions{display:flex}
  .mobile-cta{display:none}
  .mobile-tabbar{display:none}
}
@media (min-width:1280px){
  .article-hero h1{font-size:44px}
  .article-layout{grid-template-columns:minmax(0,820px) 260px;justify-content:center;gap:48px}
  .article-aside{display:block}
}
@media (max-width:640px){
  .header-inner{gap:12px}
  .brand-seal{width:38px;height:38px;font-size:18px}
  .brand-name{font-size:15px;max-width:190px}
  .brand-sub{font-size:11px}
  .article-top{padding-top:18px}
  .article-hero{padding:22px 0 30px}
  .article-hero h1{font-size:29px}
  .article-deck{font-size:15px}
  .article-layout{padding:28px 0 48px}
  .article-body{font-size:16.5px;line-height:1.82}
  .article-body h2{font-size:23px;margin-top:34px}
  .author-card{flex-direction:column;gap:14px}
  .author-avatar{width:64px;height:64px}
  .cta-strip{padding:24px 20px;border-radius:18px}
  .cta-strip h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{gap:22px}
  .footer-bottom{padding-bottom:22px}
}