/* roulang page: index */
:root{
  --ink:#14100F; --ink-2:#3A3330; --ink-3:#7A6F69;
  --paper:#FAF7F2; --paper-2:#F1E9DD; --line:#E2D7C8;
  --brand:#B22C5A; --brand-deep:#8A1F44; --brand-soft:#F6E3E9;
  --accent:#2F4A4E;
  --r-s:4px; --r-m:10px; --r-l:20px;
  --sh-1:0 1px 2px rgba(20,16,15,.06);
  --sh-2:0 10px 30px -12px rgba(20,16,15,.18);
  --sh-3:0 18px 44px -18px rgba(138,31,68,.28);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --bs-primary:#B22C5A; --bs-primary-rgb:178,44,90;
  --bs-body-color:#3A3330; --bs-body-bg:#FAF7F2;
  --bs-border-radius:10px; --bs-border-radius-sm:4px; --bs-border-radius-lg:20px;
  --bs-link-color:#B22C5A; --bs-link-hover-color:#8A1F44;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.4px}
h1{font-size:clamp(32px,4.4vw,60px);line-height:1.12}
h2{font-size:clamp(26px,3vw,38px);line-height:1.2}
h3{font-size:22px;line-height:1.35}
p{margin:0 0 1em}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{max-width:1200px;padding-left:36px;padding-right:36px}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(250,247,242,.96);
  border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease;
  backdrop-filter:saturate(120%) blur(6px);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:36px;height:36px;border-radius:50%;background:var(--brand);
  display:grid;place-items:center;color:#fff;font-size:15px;flex:0 0 auto;
  box-shadow:0 6px 16px -8px rgba(138,31,68,.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-family:var(--font-serif);font-size:18px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.14em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-m);
  color:var(--ink);font-size:17px;background:#fff;
}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-m);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;border:1.5px solid var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-light{background:var(--paper);color:var(--ink);border:1.5px solid var(--paper)}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-soft)}
.btn-block{width:100%}

/* step bar */
.stepbar{background:var(--paper);border-top:1px solid var(--line)}
.stepbar-inner{
  display:flex;align-items:center;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:10px 0 12px;scrollbar-width:none;
}
.stepbar-inner::-webkit-scrollbar{display:none}
.step-track{position:relative;flex:0 0 auto;display:flex;gap:8px;align-items:center}
.step-item{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--paper-2);color:var(--ink-2);font-size:13px;white-space:nowrap;
  scroll-snap-align:start;transition:background .2s ease,color .2s ease;
}
.step-item i{font-size:12px;color:var(--brand)}
.step-item:hover{background:var(--brand-soft);color:var(--brand-deep)}
.step-item.active{background:var(--brand);color:#fff}
.step-item.active i{color:#fff}
.step-progress{flex:1 1 auto;min-width:60px;height:3px;background:var(--line);border-radius:2px;overflow:hidden}
.step-progress span{display:block;height:100%;width:0;background:var(--brand);transition:width .5s ease}

/* ===== section base ===== */
section{position:relative}
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-paper-2{background:var(--paper-2)}
.sec-ink{background:var(--ink);color:#EDE4DA}
.sec-ink h2,.sec-ink h3{color:#FAF7F2}
.sec-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.sec-num{font-family:"DIN Alternate","Barlow",var(--font-sans);font-size:13px;letter-spacing:.18em;color:var(--brand);font-weight:700}
.sec-dash{width:40px;height:1px;background:var(--line);flex:0 0 auto}
.sec-ink .sec-dash{background:rgba(250,247,242,.35)}
.sec-sub{font-size:18px;color:var(--ink-3);max-width:760px;margin-bottom:44px}
.sec-ink .sec-sub{color:rgba(237,228,218,.75)}
.sec-head + .sec-sub{margin-top:0}

/* ===== hero ===== */
.hero{padding:72px 0 88px;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-120px;top:-140px;width:640px;height:640px;border-radius:50%;
  background:var(--brand-soft);opacity:.3;pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;letter-spacing:.1em;padding:7px 14px;border-radius:var(--r-s);margin-bottom:22px;font-weight:600;
}
.hero h1{margin-bottom:22px;max-width:640px}
.hero h1 span{color:var(--brand)}
.hero-lead{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 24px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;color:var(--ink-3)}
.trust-row li{display:flex;align-items:center;gap:7px}
.trust-row i{color:var(--brand);font-size:12px}

.demo-panel{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;box-shadow:var(--sh-2);
}
.demo-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.demo-head b{font-family:var(--font-serif);font-size:16px;color:var(--ink)}
.demo-dots{display:flex;gap:6px}
.demo-dots span{width:8px;height:8px;border-radius:50%;background:var(--line)}
.demo-dots span:first-child{background:var(--brand)}
.demo-img{border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--paper-2)}
.demo-img img{width:100%;height:100%;object-fit:cover}
.demo-rows{margin-top:14px;display:grid;gap:10px}
.demo-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--paper);
  font-size:14px;color:var(--ink-2);
}
.demo-row b{font-size:13px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);padding:3px 9px;border-radius:var(--r-s)}
.data-chip{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-m);padding:14px 20px;box-shadow:var(--sh-2);text-align:left;
}
.data-chip strong{display:block;font-family:"DIN Alternate","Barlow",var(--font-sans);font-size:30px;line-height:1;color:var(--brand);font-variant-numeric:tabular-nums}
.data-chip span{font-size:12px;color:var(--ink-3);letter-spacing:.06em}

/* ===== stats ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.stat{padding:30px 24px 6px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{
  font-family:"DIN Alternate","Barlow",var(--font-sans);font-size:clamp(38px,4.6vw,66px);
  line-height:1;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-1px;
}
.stat-num em{font-style:normal;font-size:22px;margin-left:4px;color:var(--brand)}
.stat-label{margin-top:12px;font-size:13px;color:var(--ink-3);letter-spacing:.06em}

/* ===== card base ===== */
.card-x{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:26px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;display:flex;flex-direction:column;
}
.card-x:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.card-x h3{font-size:19px;margin-bottom:10px}
.card-x p{font-size:14.5px;color:var(--ink-3);margin-bottom:0}
.badge-soft{display:inline-block;background:var(--brand-soft);color:var(--brand-deep);font-size:12px;letter-spacing:.1em;padding:5px 11px;border-radius:var(--r-s);font-weight:600}
.badge-neutral{display:inline-block;background:var(--paper-2);color:var(--ink-2);font-size:12px;padding:5px 11px;border-radius:var(--r-s)}

/* matrix */
.matrix-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:28px;
  box-shadow:var(--sh-1);height:100%;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.matrix-main:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.matrix-img{border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--paper-2);margin-bottom:20px}
.matrix-img img{width:100%;height:100%;object-fit:cover}
.matrix-main h3{font-size:24px;margin-bottom:12px}
.matrix-list{margin-top:16px;display:grid;gap:10px}
.matrix-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.7}
.matrix-list i{color:var(--brand);font-size:12px;margin-top:6px;flex:0 0 auto}
.mini-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-m);padding:22px;
  display:flex;flex-direction:column;justify-content:space-between;height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,background .2s ease;
}
.mini-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3);background:#fff}
.mini-card h3{font-size:17px;margin-bottom:8px}
.mini-card p{font-size:14px;color:var(--ink-3);margin:0}
.mini-arrow{margin-top:16px;color:var(--brand);font-size:15px}

/* audience */
.aud-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:26px;height:100%;box-shadow:var(--sh-1)}
.aud-card h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.aud-card h3 i{font-size:16px}
.aud-yes h3 i{color:var(--brand)}
.aud-no h3 i{color:var(--accent)}
.aud-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);padding:9px 0;border-bottom:1px dashed var(--line)}
.aud-list li:last-child{border-bottom:0}
.aud-list i{font-size:12px;margin-top:6px;flex:0 0 auto}
.aud-yes .aud-list i{color:var(--brand)}
.aud-no .aud-list i{color:var(--ink-3)}

/* scene */
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;height:100%;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.scene-img{position:relative;aspect-ratio:16/10;background:var(--paper-2);overflow:hidden}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene-card:hover .scene-img img{transform:scale(1.04)}
.scene-tag{position:absolute;top:10px;right:10px;background:rgba(250,247,242,.94);color:var(--brand-deep);font-size:11.5px;font-weight:600;padding:4px 9px;border-radius:var(--r-s);letter-spacing:.06em}
.scene-body{padding:16px 18px 18px}
.scene-body h3{font-size:17px;margin-bottom:6px}
.scene-body p{font-size:13.5px;color:var(--ink-3);margin:0}

/* compare table */
.cmp-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1)}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px}
.cmp-table thead th{background:var(--accent);color:#F7F2EA;font-weight:600;font-size:14px;text-align:left;padding:16px 22px;letter-spacing:.04em}
.cmp-table thead th.col-brand{background:var(--brand)}
.cmp-table tbody td{padding:16px 22px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover td{background:var(--paper)}
.cmp-table td.dim{font-weight:600;color:var(--ink);white-space:nowrap;width:150px}
.cmp-table td.col-brand{background:var(--brand-soft);color:var(--brand-deep);font-weight:500}
.cmp-table tbody tr:hover td.col-brand{background:#F2D8E1}

/* timeline */
.tl{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:20px}
.tl::before{content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line)}
.tl-item{position:relative;padding-top:38px}
.tl-dot{position:absolute;top:3px;left:0;width:12px;height:12px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px var(--paper)}
.tl-item.current .tl-dot{width:18px;height:18px;top:0;box-shadow:0 0 0 6px var(--brand-soft)}
.tl-year{font-family:"DIN Alternate","Barlow",var(--font-sans);font-size:22px;color:var(--ink);font-weight:700;letter-spacing:.02em}
.tl-item p{font-size:14px;color:var(--ink-3);margin-top:6px;line-height:1.7}

/* news */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;height:100%;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.news-img{aspect-ratio:16/10;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--brand-deep)}
.news-body p{font-size:14px;color:var(--ink-3);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3)}
.news-empty{
  background:var(--paper-2);border:1px dashed var(--line);border-radius:var(--r-l);
  padding:56px 24px;text-align:center;color:var(--ink-3);
}
.news-empty i{font-size:34px;color:var(--brand);display:block;margin-bottom:14px}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.link-more:hover::after{transform:scaleX(1)}

/* guarantee */
.guarantee-list{border-top:1px solid var(--line)}
.g-item{display:flex;gap:22px;padding:26px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.g-icon{
  flex:0 0 auto;width:52px;height:52px;border:1px solid var(--line);border-radius:var(--r-m);
  display:grid;place-items:center;color:var(--brand);font-size:18px;background:#fff;
}
.g-body h3{font-size:19px;margin-bottom:6px}
.g-body p{font-size:14.5px;color:var(--ink-3);margin:0;max-width:820px}

/* steps */
.step-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:26px 22px;height:100%;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.step-card .num{font-family:"DIN Alternate","Barlow",var(--font-sans);font-size:34px;color:var(--brand);line-height:1;font-weight:700;letter-spacing:-1px}
.step-card h3{font-size:18px;margin:14px 0 8px}
.step-card p{font-size:14px;color:var(--ink-3);flex:1 1 auto}
.step-card a{margin-top:14px;font-size:13.5px;font-weight:600;display:inline-flex;gap:6px;align-items:center}

/* quotes */
.quote{border-top:1px solid var(--line);padding:28px 0}
.quote:last-of-type{border-bottom:1px solid var(--line)}
.quote p{font-family:var(--font-serif);font-size:19px;line-height:1.75;color:var(--ink);margin-bottom:14px}
.quote p::before{content:"“";color:var(--brand);margin-right:2px;font-size:26px;line-height:0}
.quote p::after{content:"”";color:var(--brand);font-size:26px;line-height:0}
.quote-meta{font-size:13px;color:var(--ink-3);letter-spacing:.06em}

/* channel */
.channel-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:18px 22px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.channel-item:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.channel-item b{font-family:var(--font-serif);font-size:17px;color:var(--ink)}
.channel-item span{font-size:13px;color:var(--ink-3)}
.channel-note{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-m);padding:24px}
.channel-note h3{font-size:17px;margin-bottom:10px}
.channel-note p{font-size:14px;color:var(--ink-3);margin:0}

/* pact */
.pact-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.pact-cols li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(250,247,242,.16);font-size:15px;color:rgba(237,228,218,.9);line-height:1.75}
.pact-cols li b{font-family:"DIN Alternate","Barlow",var(--font-sans);color:var(--brand);font-size:14px;flex:0 0 auto;letter-spacing:.06em}
.pact-note{margin-top:28px;font-size:13.5px;color:rgba(237,228,218,.62);border-left:3px solid var(--brand);padding-left:14px}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);font-family:var(--font-serif);
  transition:color .2s ease;min-height:44px;
}
.faq-q:hover{color:var(--brand)}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .3s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{font-size:15px;color:var(--ink-3);line-height:1.9;padding:0 4px 24px;max-width:900px}
.faq-item.open .faq-a{max-height:420px}

/* form */
.form-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:32px;box-shadow:var(--sh-1)}
.form-label{font-size:13px;color:var(--ink-3);letter-spacing:.06em;margin-bottom:8px;display:block;font-weight:600}
.form-control-x{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-s);padding:0 14px;
  font-size:15px;color:var(--ink);background:var(--paper);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control-x:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(178,44,90,.12);background:#fff}
select.form-control-x{appearance:none;background-image:none}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-2);color:var(--ink-2);font-size:13.5px;
  transition:all .2s ease;min-height:40px;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.chip.on{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep);font-weight:600}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-3);line-height:1.7}
.check-row input{margin-top:5px;accent-color:var(--brand);width:16px;height:16px;flex:0 0 auto}
.form-tip{font-size:13px;color:var(--ink-3);margin-top:12px;margin-bottom:0}
.form-ok{display:none;background:var(--brand-soft);color:var(--brand-deep);border-radius:var(--r-s);padding:12px 14px;font-size:13.5px;margin-top:14px}
.form-ok.show{display:block}

/* footer */
.site-footer{background:var(--ink);color:rgba(237,228,218,.78);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer h4{color:#FAF7F2;font-size:16px;margin-bottom:16px;font-family:var(--font-serif)}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(237,228,218,.66)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{box-shadow:none}
.footer-brand b{font-family:var(--font-serif);font-size:18px;color:#FAF7F2}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(237,228,218,.72)}
.footer-links a:hover{color:var(--brand-soft)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(250,247,242,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(237,228,218,.55);
}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:2000;background:var(--paper);padding:22px 20px 40px;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-m);font-size:18px;color:var(--ink);background:#fff}
.drawer a.drawer-link{
  font-size:20px;color:var(--ink);padding:14px 4px;border-bottom:1px solid var(--line);
  font-family:var(--font-serif);display:block;
}
.drawer a.drawer-link:hover{color:var(--brand)}
.drawer .btn{margin-top:20px}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ===== responsive ===== */
@media (max-width:1199.98px){
  .container{padding-left:32px;padding-right:32px}
  .hero{padding:56px 0 72px}
  .sec{padding:76px 0}
  .step-cards{grid-template-columns:repeat(2,1fr)}
  .tl{grid-template-columns:repeat(3,1fr)}
  .tl::before{display:none}
  .tl-item{padding-top:34px;border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn-primary{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:24px 12px 6px}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-last-child(-n+2){border-bottom:0}
  .pact-cols{grid-template-columns:1fr}
  .data-chip{position:static;margin-top:16px;display:inline-block}
  .demo-panel{margin-top:32px}
  .tl{grid-template-columns:repeat(2,1fr)}
  .sec-sub{font-size:16px}
}
@media (max-width:767.98px){
  .container{padding-left:30px;padding-right:30px}
  body{font-size:15px;line-height:1.9}
  h2{font-size:26px}
  .hero{padding:44px 0 56px}
  .hero-lead{font-size:15.5px}
  .sec{padding:56px 0}
  .sec-tight{padding:48px 0}
  .sec-sub{margin-bottom:32px}
  .step-cards{grid-template-columns:1fr}
  .tl{grid-template-columns:1fr}
  .tl-item{border-top:0;border-left:1px solid var(--line);padding:0 0 26px 24px;position:relative}
  .tl-dot{left:-7px;top:6px}
  .tl-item.current .tl-dot{left:-10px;top:2px}
  .footer-grid{grid-template-columns:1fr}
  .g-item{gap:16px}
  .g-icon{width:44px;height:44px;font-size:16px}
  .form-panel{padding:24px 20px}
  .cmp-table thead{display:none}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%}
  .cmp-table tr{border-bottom:1px solid var(--line);padding:16px 18px}
  .cmp-table tbody td{border:0;padding:4px 0}
  .cmp-table td.dim{width:auto;font-size:13px;color:var(--ink-3);border-bottom:1px dashed var(--line);margin-bottom:8px;padding-bottom:8px}
  .cmp-table tbody tr:hover td{background:transparent}
  .cmp-table td.col-brand{background:transparent;padding-left:0}
  .cmp-table td.col-brand::before{content:"寻觅爱论坛 · ";font-weight:600;color:var(--brand)}
  .site-footer{padding-top:52px}
}

/* roulang page: article */
:root{
  --ink:#14100F; --ink-2:#3A3330; --ink-3:#7A6F69;
  --paper:#FAF7F2; --paper-2:#F1E9DD; --line:#E2D7C8;
  --brand:#B22C5A; --brand-deep:#8A1F44; --brand-soft:#F6E3E9;
  --accent:#2F4A4E;
  --r-s:4px; --r-m:10px; --r-l:20px;
  --sh-1:0 1px 2px rgba(20,16,15,.06);
  --sh-2:0 10px 30px -12px rgba(20,16,15,.18);
  --sh-3:0 18px 44px -18px rgba(138,31,68,.28);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --bs-primary:#B22C5A; --bs-primary-rgb:178,44,90;
  --bs-body-color:#3A3330; --bs-body-bg:#FAF7F2;
  --bs-border-radius:10px; --bs-border-radius-sm:4px; --bs-border-radius-lg:20px;
  --bs-link-color:#B22C5A; --bs-link-hover-color:#8A1F44;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-s);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:36px;padding-right:36px}
.full-row{display:flex;flex-wrap:wrap}
/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(250,247,242,.96);
  border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease;
  -webkit-backdrop-filter:saturate(120%) blur(6px);
  backdrop-filter:saturate(120%) blur(6px);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:36px;height:36px;border-radius:50%;background:var(--brand);
  display:grid;place-items:center;color:#fff;font-size:15px;flex:0 0 auto;
  box-shadow:0 6px 16px -8px rgba(138,31,68,.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-family:var(--font-serif);font-size:18px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.14em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-m);
  color:var(--ink);font-size:17px;background:#fff;place-items:center;
}
/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-m);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;border:1.5px solid var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
/* ===== stepbar ===== */
.stepbar{background:var(--paper-2);border-top:1px solid var(--line)}
.stepbar-inner{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 0 13px;overflow-x:auto;scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
}
.stepbar-inner::-webkit-scrollbar{display:none}
.step-item{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--paper);color:var(--ink-2);font-size:13px;white-space:nowrap;
  scroll-snap-align:start;transition:background .2s ease,color .2s ease;
}
.step-item i{font-size:12px;color:var(--brand)}
.step-item:hover{background:var(--brand-soft);color:var(--brand-deep)}
.step-item.active{background:var(--brand);color:#fff}
.step-item.active i{color:#fff}
.step-progress{position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--line);border-radius:3px}
.step-progress span{display:block;height:100%;width:25%;background:var(--brand);border-radius:3px;transition:width .4s ease}
/* ===== section base ===== */
.section{padding:72px 0;position:relative}
.section-alt{background:var(--paper-2)}
.section-head{margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-deep);
  font-size:13px;letter-spacing:.12em;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";display:inline-block;width:40px;height:1px;background:var(--brand)}
h2.section-title{
  font-family:var(--font-serif);font-size:36px;line-height:1.3;color:var(--ink);
  margin:0 0 14px;letter-spacing:-.3px;
}
.section-desc{margin:0;max-width:680px;font-size:16px;line-height:1.85;color:var(--ink-2)}
/* ===== badges ===== */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);
  color:var(--brand-deep);font-size:13px;font-weight:600;padding:5px 12px;
  border-radius:var(--r-s);letter-spacing:.04em;
}
.badge-neutral{
  display:inline-flex;align-items:center;gap:6px;background:var(--paper-2);
  color:var(--ink-2);font-size:13px;padding:5px 12px;border-radius:var(--r-s);
}
/* ===== article hero ===== */
.article-hero{padding:36px 0 0;background:var(--paper)}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--ink-3)}
.breadcrumb-nav a{color:var(--ink-3)}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav i{font-size:10px;color:var(--line)}
.breadcrumb-nav .current{color:var(--ink-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line)}
.article-head h1{
  font-family:var(--font-serif);font-size:clamp(28px,3.4vw,42px);line-height:1.24;
  color:var(--ink);margin:18px 0 20px;letter-spacing:-.5px;word-break:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;font-size:13px;color:var(--ink-3)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--brand);font-size:12px}
.article-cover{
  margin-top:30px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--paper-2);
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.cover-caption{font-size:13px;color:var(--ink-3);margin-top:12px}
/* ===== article body ===== */
.article-body{padding:54px 0 10px}
.article-prose{max-width:800px;margin:0 auto;font-size:17px;line-height:1.95;color:var(--ink-2)}
.article-prose > *:first-child{margin-top:0}
.article-prose p{margin:0 0 1.4em}
.article-prose h2{
  font-family:var(--font-serif);font-size:28px;line-height:1.4;color:var(--ink);
  margin:42px 0 18px;letter-spacing:-.2px;
}
.article-prose h3{font-size:22px;line-height:1.5;color:var(--ink);margin:34px 0 14px}
.article-prose h4{font-size:18px;color:var(--ink);margin:26px 0 12px}
.article-prose ul,.article-prose ol{padding-left:1.35em;margin:0 0 1.4em}
.article-prose li{margin-bottom:.55em}
.article-prose ul{list-style:square}
.article-prose blockquote{
  margin:0 0 1.4em;padding:18px 24px;background:var(--paper-2);
  border-left:3px solid var(--brand);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink);
}
.article-prose blockquote p:last-child{margin-bottom:0}
.article-prose img{border-radius:var(--r-m);margin:0 0 .8em;width:100%;height:auto}
.article-prose figure{margin:0 0 1.4em}
.article-prose figcaption{font-size:13px;color:var(--ink-3);margin-top:8px;line-height:1.7}
.article-prose table{width:100%;border-collapse:collapse;margin:0 0 1.5em;font-size:15px;line-height:1.7}
.article-prose th,.article-prose td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-prose th{background:var(--accent);color:#fff;font-weight:600}
.article-prose tbody tr:nth-child(even) td{background:var(--paper-2)}
.article-prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-prose a:hover{color:var(--brand-deep)}
.article-prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-prose strong{color:var(--ink)}
/* ===== empty state ===== */
.empty-state{
  max-width:800px;margin:0 auto;text-align:center;padding:56px 28px;
  background:var(--paper-2);border:1px dashed var(--line);border-radius:var(--r-l);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
  background:#fff;border:1px solid var(--line);display:grid;place-items:center;
  color:var(--brand);font-size:22px;
}
.empty-state h2{font-family:var(--font-serif);font-size:24px;color:var(--ink);margin:0 0 12px}
.empty-state p{font-size:15px;color:var(--ink-3);margin:0 0 24px}
/* ===== key points ===== */
.key-card{
  max-width:800px;margin:0 auto;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-l);padding:32px 36px;
}
.key-card h2{font-family:var(--font-serif);font-size:22px;color:var(--ink);margin:0 0 20px}
.key-list{list-style:none;margin:0;padding:0;display:grid;gap:15px}
.key-list li{display:flex;gap:13px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.key-list li i{color:var(--brand);font-size:12px;margin-top:7px;flex:0 0 auto}
/* ===== related cards ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;color:inherit;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:var(--brand);color:inherit}
.rel-thumb{aspect-ratio:16/10;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{
  font-family:var(--font-serif);font-size:18px;line-height:1.5;color:var(--ink);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover .rel-body h3{color:var(--brand-deep)}
.rel-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:10px;font-size:13px;color:var(--ink-3);padding-top:6px;
}
/* ===== prev / next ===== */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pn-item{
  display:flex;flex-direction:column;gap:8px;padding:26px 28px;color:inherit;
  transition:background .2s ease;
}
.pn-item + .pn-item{border-left:1px solid var(--line)}
.pn-item:hover{background:var(--paper);color:inherit}
.pn-label{font-size:13px;color:var(--ink-3);letter-spacing:.08em;display:inline-flex;align-items:center;gap:7px}
.pn-label i{color:var(--brand);font-size:11px}
.pn-title{font-family:var(--font-serif);font-size:18px;line-height:1.55;color:var(--ink)}
.pn-item:hover .pn-title{color:var(--brand-deep)}
.pn-next{align-items:flex-end;text-align:right}
/* ===== back bar ===== */
.back-bar{padding:0 0 82px}
.back-link{
  display:inline-flex;align-items:center;gap:10px;fonts-size:15px;font-size:15px;
  font-weight:600;color:var(--brand);padding:14px 24px;border:1.5px solid var(--line);
  border-radius:var(--r-m);background:#fff;transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.back-link:hover{border-color:var(--brand);box-shadow:var(--sh-2);color:var(--brand-deep)}
.back-link i{font-size:12px}
/* ===== footer ===== */
.site-footer{background:var(--ink);color:rgba(250,247,242,.78);padding:70px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:46px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--paper);margin-bottom:16px}
.footer-brand b{font-family:var(--font-serif);font-size:18px;letter-spacing:.5px}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;margin:0 0 16px;font-family:var(--font-sans);letter-spacing:.02em;
}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:14px}
.footer-links a{color:rgba(250,247,242,.72)}
.footer-links a:hover{color:var(--brand-soft)}
.site-footer p{font-size:14px;line-height:1.85;margin:0;color:rgba(250,247,242,.66)}
.footer-bottom{
  border-top:1px solid rgba(250,247,242,.12);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(250,247,242,.5);
}
/* ===== responsive ===== */
@media (max-width:1199px){
  .container{padding-left:28px;padding-right:28px}
  h2.section-title{font-size:32px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:34px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:991px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 24px 20px;background:var(--paper);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  }
  .main-nav.open{display:flex}
  .main-nav a{width:100%;padding:14px 0;font-size:20px;border-bottom:1px solid var(--line)}
  .main-nav a::after{display:none}
  .nav-toggle{display:grid}
  .section{padding:60px 0}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .key-card{padding:26px 24px}
  .pn-grid{grid-template-columns:1fr}
  .pn-item + .pn-item{border-left:0;border-top:1px solid var(--line)}
  .pn-next{align-items:flex-start;text-align:left}
  .article-prose{font-size:16px;line-height:1.9}
  .article-prose h2{font-size:25px;margin-top:34px}
  .article-prose h3{font-size:20px}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .header-inner{height:64px}
  .logo-text em{display:none}
  .logo-text b{font-size:16px}
  .header-actions .btn{padding:11px 16px;font-size:14px}
  h2.section-title{font-size:26px}
  .section{padding:52px 0}
  .section-desc{font-size:15px}
  .article-head h1{font-size:26px;line-height:1.32}
  .article-cover{aspect-ratio:4/3;border-radius:var(--r-m)}
  .article-body{padding:38px 0 6px}
  .article-prose{font-size:15.5px;line-height:1.9}
  .article-prose table{display:block;overflow-x:auto;white-space:nowrap}
  .rel-grid{grid-template-columns:1fr}
  .key-card{padding:22px 20px;border-radius:var(--r-m)}
  .back-bar{padding:0 0 60px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .site-footer{padding-top:52px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .step-item{font-size:12px;padding:6px 12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --ink:#14100F; --ink-2:#3A3330; --ink-3:#7A6F69;
  --paper:#FAF7F2; --paper-2:#F1E9DD; --line:#E2D7C8;
  --brand:#B22C5A; --brand-deep:#8A1F44; --brand-soft:#F6E3E9;
  --accent:#2F4A4E;
  --r-s:4px; --r-m:10px; --r-l:20px;
  --sh-1:0 1px 2px rgba(20,16,15,.06);
  --sh-2:0 10px 30px -12px rgba(20,16,15,.18);
  --sh-3:0 18px 44px -18px rgba(138,31,68,.28);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --bs-primary:#B22C5A; --bs-primary-rgb:178,44,90;
  --bs-body-color:#3A3330; --bs-body-bg:#FAF7F2;
  --bs-border-radius:10px; --bs-border-radius-sm:4px; --bs-border-radius-lg:20px;
  --bs-link-color:#B22C5A; --bs-link-hover-color:#8A1F44;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;line-height:1.25;letter-spacing:-.3px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-s);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:36px;padding-right:36px}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(250,247,242,.97);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
  backdrop-filter:saturate(120%) blur(6px);
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:36px;height:36px;border-radius:50%;background:var(--brand);
  display:grid;place-items:center;color:#fff;font-size:15px;flex:0 0 auto;
  box-shadow:0 6px 16px -8px rgba(138,31,68,.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-family:var(--font-serif);font-size:18px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.14em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-m);
  color:var(--ink);font-size:17px;background:#fff;align-items:center;justify-content:center;
}

/* ===== stepbar ===== */
.stepbar{background:var(--paper-2);border-top:1px solid var(--line)}
.stepbar-inner{
  display:flex;align-items:center;gap:10px;padding:10px 0;overflow-x:auto;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.stepbar-inner::-webkit-scrollbar{display:none}
.step-item{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--paper);color:var(--ink-2);font-size:13px;white-space:nowrap;
  scroll-snap-align:start;border:1px solid var(--line);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.step-item i{font-size:12px;color:var(--brand)}
.step-item:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-soft)}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-m);
  min-height:44px;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;border:1.5px solid var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-light{background:var(--paper);color:var(--ink);border:1.5px solid var(--paper)}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-soft)}
.btn-sm{padding:11px 20px;font-size:14px}

/* ===== section base ===== */
section{position:relative}
.sec{padding:80px 0}
.sec-alt{background:var(--paper-2)}
.sec-line{border-top:1px solid var(--line)}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-eyebrow{
  display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;
  color:var(--ink-3);margin-bottom:14px;font-weight:600;
}
.sec-eyebrow span{font-family:var(--font-sans);color:var(--brand);font-variant-numeric:tabular-nums}
.sec-eyebrow i{display:block;width:40px;height:1px;background:var(--line)}
.sec-head h2{font-size:36px;line-height:1.25}
.sec-head p.sub{margin-top:14px;font-size:16px;color:var(--ink-2);line-height:1.85;max-width:680px}

/* ===== category hero ===== */
.cat-hero{
  padding:56px 0 44px;background:var(--paper);border-bottom:1px solid var(--line);
  min-height:300px;display:flex;align-items:center;
}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:48px;align-items:center;width:100%}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:18px;display:flex;align-items:center;gap:8px}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:9px;color:var(--line)}
.cat-hero h1{font-size:clamp(30px,3.6vw,46px);line-height:1.2;max-width:720px}
.cat-hero h1 em{font-style:normal;color:var(--brand)}
.cat-desc{margin-top:18px;font-size:16px;color:var(--ink-2);line-height:1.85;max-width:640px}
.cat-stats{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:13px;color:var(--ink-3)}
.cat-stats li{display:flex;align-items:center;gap:7px}
.cat-stats i{color:var(--brand);font-size:12px}
.cat-count{display:flex;align-items:center;gap:26px}
.cat-count .vline{width:1px;height:132px;background:var(--line);display:block}
.cat-count b{
  display:block;font-family:var(--font-sans);font-size:68px;line-height:1;
  color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-2px;
}
.cat-count em{display:block;font-style:normal;font-size:13px;color:var(--ink-3);margin-top:10px;letter-spacing:.1em}

/* ===== filter chips ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.filter-bar .label{font-size:13px;color:var(--ink-3);letter-spacing:.1em;margin-right:6px}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--paper);
  font-size:14px;color:var(--ink-2);min-height:40px;display:inline-flex;align-items:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ===== article cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card-item:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-3)}
.card-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);border-bottom:1px solid var(--line)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card-item:hover .card-thumb img{transform:scale(1.05)}
.card-body{padding:22px 24px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.badge-soft{
  display:inline-flex;align-items:center;align-self:flex-start;gap:6px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:600;
  padding:4px 11px;border-radius:var(--r-s);letter-spacing:.04em;
}
.badge-neutral{
  display:inline-flex;align-items:center;background:var(--paper-2);color:var(--ink-2);
  font-size:13px;padding:4px 11px;border-radius:var(--r-s);letter-spacing:.04em;
}
.card-body h3{
  font-size:19px;line-height:1.45;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body h3 a{color:var(--ink)}
.card-body h3 a:hover{color:var(--brand)}
.card-body p.desc{
  font-size:14px;line-height:1.8;color:var(--ink-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);letter-spacing:.03em;
}
.card-meta a{display:inline-flex;align-items:center;gap:6px;font-size:13px}
.card-meta a i{transition:transform .2s ease}
.card-meta a:hover i{transform:translateX(3px)}
.more-wrap{display:flex;justify-content:center;margin-top:40px}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-m);background:var(--paper-2);
  padding:56px 24px;text-align:center;
}
.empty-state .ico{
  width:56px;height:56px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;margin:0 auto 16px;color:var(--brand);font-size:20px;
}
.empty-state p.t1{font-size:16px;color:var(--ink-2)}
.empty-state p.t2{font-size:13px;color:var(--ink-3);margin-top:8px}

/* ===== steps guide ===== */
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.guide-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:28px 26px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.guide-item:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.guide-item .num{
  font-family:var(--font-sans);font-size:34px;color:var(--brand);font-variant-numeric:tabular-nums;
  line-height:1;letter-spacing:-1px;display:block;margin-bottom:16px;
}
.guide-item h3{font-size:21px;margin-bottom:10px}
.guide-item p{font-size:15px;color:var(--ink-3);line-height:1.85}

/* ===== picks list ===== */
.pick-list{border-top:1px solid var(--line)}
.pick-item{
  display:flex;align-items:center;gap:20px;padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.pick-item:hover{background:var(--paper-2)}
.pick-item .idx{
  font-family:var(--font-sans);font-size:13px;color:var(--ink-3);width:34px;flex:0 0 auto;
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.pick-item .ttl{font-size:17px;color:var(--ink);flex:1 1 auto;min-width:0}
.pick-item:hover .ttl{color:var(--brand)}
.pick-item .ttl a{color:inherit}
.pick-item .date{font-size:13px;color:var(--ink-3);white-space:nowrap}
.pick-item .badge-soft,.pick-item .badge-neutral{white-space:nowrap}

/* ===== faq ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  font-family:var(--font-serif);transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q i{font-size:13px;color:var(--brand);transition:transform .3s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:860px}

/* ===== metrics strip ===== */
.metrics-strip{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-l);
  padding:36px 40px;display:grid;grid-template-columns:repeat(3,1fr) 1.2fr;gap:28px;align-items:center;
}
.metrics-strip .cell b{
  display:block;font-family:var(--font-sans);font-size:44px;line-height:1;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-1.5px;
}
.metrics-strip .cell em{display:block;font-style:normal;font-size:13px;color:var(--ink-3);margin-top:10px;letter-spacing:.06em}
.metrics-strip .note{font-size:14px;color:var(--ink-2);line-height:1.85;border-left:1px solid var(--line);padding-left:26px}

/* ===== cta band ===== */
.cta-band{background:var(--ink);color:#F7F1E8;padding:64px 0;border-radius:0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#FBF7F1;font-size:32px;max-width:660px}
.cta-band p{color:#C9BFB5;font-size:15px;margin-top:12px;max-width:620px}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:#C9BFB5;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand b{font-family:var(--font-serif);color:#FBF7F1;font-size:18px;letter-spacing:.5px}
.site-footer p{font-size:14px;line-height:1.85;color:#B7ADA4}
.site-footer h4{color:#FBF7F1;font-size:15px;margin-bottom:16px;letter-spacing:.06em}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#B7ADA4;font-size:14px}
.footer-links a:hover{color:var(--brand-soft)}
.footer-bottom{
  border-top:1px solid rgba(226,215,200,.16);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E8580;
}

/* ===== responsive ===== */
@media (max-width:1199px){
  .container{padding-left:28px;padding-right:28px}
  .cat-count b{font-size:56px}
  .metrics-strip{grid-template-columns:repeat(3,1fr);}
  .metrics-strip .note{grid-column:1/-1;border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:20px}
}
@media (max-width:991px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;
    gap:0;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:8px 24px 24px;
  }
  .main-nav.open{display:flex}
  .main-nav a{width:100%;font-size:20px;padding:16px 0;border-bottom:1px solid var(--line)}
  .main-nav a::after{display:none}
  .nav-toggle{display:inline-flex}
  .btn{padding:13px 22px;font-size:14px}
  .sec{padding:64px 0}
  .sec-head h2{font-size:29px}
  .cat-hero{padding:44px 0 36px;min-height:0}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .cat-count{justify-content:flex-start}
  .cat-count .vline{height:76px}
  .cat-count b{font-size:44px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .guide-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band h2{font-size:26px}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .header-inner{height:62px;gap:12px}
  .logo-text b{font-size:16px}
  .logo-text em{display:none}
  .header-actions .btn-primary{display:none}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:30px}
  .sec-head h2{font-size:25px}
  .sec-head p.sub{font-size:15px}
  .cat-hero h1{font-size:30px}
  .cat-desc{font-size:15px}
  .card-grid{grid-template-columns:1fr}
  .pick-item{flex-wrap:wrap;gap:8px 14px;padding:18px 0}
  .pick-item .ttl{flex:1 1 100%;order:3;font-size:16px}
  .metrics-strip{grid-template-columns:1fr;padding:26px 22px;gap:20px}
  .metrics-strip .cell b{font-size:38px}
  .faq-q{font-size:16px;padding:18px 2px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
  .cta-band{padding:48px 0}
  .cta-band .inner{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}