/* roulang page: index */
:root{--bg:#1A1410;--bg-2:#221911;--paper:#F6F1EA;--paper-2:#fffdf9;--ivory:#F3EDE4;--ink:#241C16;--copper:#C4784A;--wine:#6E2E3A;--bronze:#8A7A62;--line:rgba(196,120,74,.32);--line-soft:rgba(138,122,98,.28);--shadow:0 10px 28px rgba(36,28,22,.08);--radius:8px;--radius-btn:4px;--ease:200ms ease;--max:1120px;--header:64px;--muted:#d2c4b4;--muted-2:#5e5348;}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ivory);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.75;text-rendering:optimizeLegibility;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--copper);color:var(--bg);}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto;}
.site-header{position:sticky;top:0;z-index:40;height:var(--header);background:rgba(26,20,16,.94);border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(36,28,22,.16);}
.nav-bar{height:var(--header);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:flex;align-items:center;gap:10px;min-width:0;color:var(--ivory);font-weight:700;letter-spacing:-.04em;line-height:1.2;}
.logo-text{font-size:16px;white-space:nowrap;}
.mark{display:flex;align-items:flex-end;gap:2px;height:18px;flex:none;}
.mark i{display:block;width:3px;border-radius:1px;}
.mark i:nth-child(1){height:8px;background:var(--copper);}
.mark i:nth-child(2){height:13px;background:var(--wine);}
.mark i:nth-child(3){height:18px;background:var(--bronze);}
.btn{isolation:isolate;position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border-radius:var(--radius-btn);border:1px solid var(--copper);background:transparent;cursor:pointer;font-weight:700;letter-spacing:.01em;white-space:nowrap;transition:color var(--ease),border-color var(--ease),transform var(--ease);}
.btn span{position:relative;z-index:1;}
.btn::before{content:"";position:absolute;inset:0;background:var(--copper);transform:scaleX(0);transform-origin:left center;transition:transform var(--ease);z-index:0;}
.btn:hover::before,.btn:focus-visible::before{transform:scaleX(1);}
.btn:hover,.btn:focus-visible{color:var(--ink);}
.btn:active{transform:translateY(1px);}
.btn-primary{color:var(--copper);}
.btn-nav{flex:none;}
.btn-ghost{color:var(--ivory);border-color:rgba(243,237,228,.42);}
.btn-ghost::before{background:var(--ivory);}
.section{padding:76px 0;}
.section-paper{background:var(--paper);color:var(--ink);}
.section-dark{background:var(--bg);color:var(--ivory);}
.section-ink{background:var(--bg-2);color:var(--ivory);}
.section-head{max-width:760px;margin-bottom:28px;}
.section-title{font-size:clamp(28px,3vw,40px);line-height:1.22;letter-spacing:-.045em;font-weight:760;}
.section-desc{margin-top:12px;font-size:16px;line-height:1.75;}
.section-dark .section-desc,.section-ink .section-desc,.hero-lead,.hero-sub{color:var(--muted);}
.section-paper .section-desc{color:var(--muted-2);}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--copper);font-size:13px;letter-spacing:.12em;font-weight:700;}
.hero{padding:54px 0 72px;background:radial-gradient(1200px 420px at 8% -10%,rgba(196,120,74,.16),transparent 55%),var(--bg);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:42px;align-items:end;}
.hero-title{margin:14px 0 0;font-size:clamp(40px,5.4vw,68px);line-height:1.08;letter-spacing:-.05em;font-weight:760;}
.hero-sub{margin-top:16px;font-size:18px;color:var(--ivory);}
.hero-lead{margin-top:14px;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.age-line{margin-top:18px;color:var(--bronze);font-size:13px;}
.plaza{background:#241910;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);}
.plaza-label{display:flex;justify-content:space-between;align-items:baseline;padding:4px 6px 12px;color:var(--bronze);font-size:13px;}
.plaza-main,.plaza-sub{display:block;padding:14px;border-radius:8px;background:#2c241d;border-left:2px solid transparent;transition:transform var(--ease),border-color var(--ease),background var(--ease);}
.plaza-main{margin-bottom:8px;min-height:132px;}
.plaza-sub+.plaza-sub{margin-top:8px;}
.plaza-main:hover,.plaza-sub:hover{transform:translateY(-1px);border-left-color:var(--copper);background:#322920;}
.plaza h2,.topic-row h3,.news-row h3,.case h3,.matrix-card h3,.entry-card h3,.num-item h3,.bar h3{font-size:18px;line-height:1.45;letter-spacing:-.03em;}
.plaza h2{font-size:22px;margin:8px 0;}
.mini{color:var(--muted);font-size:14px;}
.meta-line{display:flex;gap:12px;align-items:center;margin-top:10px;color:var(--bronze);font-size:13px;}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:4px;font-size:12px;font-weight:700;letter-spacing:.04em;}
.chip-1{background:rgba(196,120,74,.18);color:#e0b08a;}
.chip-2{background:rgba(110,46,58,.45);color:#f0c9cf;}
.chip-3{background:rgba(138,122,98,.28);color:#efe4d2;}
.section-paper .chip-1{color:#8a4e2c;background:rgba(196,120,74,.16);}
.section-paper .chip-2{color:#6E2E3A;background:rgba(110,46,58,.12);}
.section-paper .chip-3{color:#5c5144;background:rgba(138,122,98,.16);}
.heat{color:var(--copper);font-weight:700;}
.topic-flow{display:grid;gap:10px;}
.topic-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 18px;background:var(--paper-2);border:1px solid rgba(138,122,98,.18);border-left:2px solid transparent;border-radius:var(--radius);box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.topic-row.lg{min-height:118px;}
.topic-row.md{min-height:92px;}
.topic-row.sm{min-height:72px;}
.topic-row:hover{transform:translateY(-1px);border-left-color:var(--copper);box-shadow:0 12px 26px rgba(36,28,22,.1);}
.topic-row h3{font-size:18px;}
.topic-row p{color:var(--muted-2);font-size:14px;}
.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px;color:var(--bronze);font-size:13px;white-space:nowrap;}
.entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.entry-card{min-height:320px;padding:32px;border-radius:var(--radius);display:flex;flex-direction:column;background:var(--paper);color:var(--ink);box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease);}
.entry-card.alt{background:#2a211c;color:var(--ivory);border:1px solid var(--line);}
.entry-card:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(36,28,22,.16);}
.entry-index{font-size:42px;line-height:1;letter-spacing:-.05em;color:var(--copper);font-weight:760;}
.entry-card h3{margin-top:18px;font-size:clamp(28px,3vw,40px);letter-spacing:-.045em;}
.entry-card p{margin-top:12px;color:var(--muted-2);max-width:460px;}
.entry-card.alt p{color:var(--muted);}
.entry-go{margin-top:auto;padding-top:24px;color:var(--copper);font-weight:700;}
.matrix{display:grid;grid-template-columns:1.45fr .85fr;gap:16px;align-items:stretch;}
.matrix-side{display:grid;gap:16px;}
.matrix-card{background:var(--paper-2);border:1px solid rgba(138,122,98,.2);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);}
.matrix-card.main{background:#241C16;color:var(--ivory);min-height:100%;display:flex;flex-direction:column;}
.matrix-card h3{font-size:28px;letter-spacing:-.04em;}
.cap-list{margin:16px 0 20px;display:grid;gap:10px;}
.cap-list li{padding-left:14px;position:relative;color:var(--muted-2);}
.matrix-card.main .cap-list li{color:var(--muted);}
.cap-list li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--copper);}
.text-link{color:var(--copper);font-weight:700;border-bottom:1px solid rgba(196,120,74,.45);padding-bottom:1px;}
.text-link:hover{border-bottom-color:var(--copper);}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.stat{padding:8px 8px 0 0;border-top:1px solid var(--line);}
.stat-num{font-size:clamp(40px,5vw,60px);line-height:1;letter-spacing:-.05em;color:var(--copper);font-weight:760;}
.stat-label{margin-top:8px;color:var(--ivory);font-weight:700;}
.stat p{color:var(--muted);font-size:14px;margin-top:6px;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.step{background:var(--paper-2);border-radius:var(--radius);padding:18px 16px 20px;border:1px solid rgba(138,122,98,.18);min-height:210px;}
.step-no{display:block;color:var(--copper);font-size:28px;letter-spacing:-.04em;font-weight:760;line-height:1;}
.step h3{margin:14px 0 8px;font-size:20px;}
.step p{color:var(--muted-2);font-size:14px;}
.scene-wide{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center;}
.scene-visual{min-height:380px;border-radius:var(--radius);background:#2a211c;border:1px solid var(--line);display:grid;grid-template-columns:1.2fr .8fr;grid-template-rows:1.2fr .8fr;gap:8px;padding:8px;}
.scene-visual span{display:flex;align-items:flex-end;padding:14px;border-radius:6px;font-weight:760;letter-spacing:-.03em;font-size:22px;}
.scene-visual span:nth-child(1){grid-row:span 2;background:#6E2E3A;}
.scene-visual span:nth-child(2){background:#C4784A;color:#241C16;}
.scene-visual span:nth-child(3){background:#8A7A62;color:#241C16;}
.scene-points{margin-top:18px;display:grid;gap:8px;}
.scene-points li{padding:10px 0;border-top:1px solid var(--line);color:var(--muted);}
.num-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:28px;align-items:start;}
.num-list{display:grid;gap:0;}
.num-item{display:grid;grid-template-columns:72px 1fr;gap:8px;padding:18px 0;border-top:1px solid rgba(138,122,98,.28);}
.num-item strong{color:var(--copper);font-size:28px;letter-spacing:-.04em;line-height:1;}
.num-item p{color:var(--muted-2);font-size:15px;}
.bar-board{display:grid;gap:12px;}
.bar-row{display:grid;grid-template-columns:1.25fr .9fr 1fr;gap:12px;}
.bar-row.alt{grid-template-columns:.8fr 1.2fr .95fr;}
.bar{background:#2c241e;border-radius:var(--radius);padding:18px 16px 16px;border-top:2px solid var(--copper);min-height:132px;}
.bar:nth-child(2){border-top-color:var(--wine);}
.bar:nth-child(3){border-top-color:var(--bronze);}
.bar h3{margin:8px 0;}
.bar p{color:var(--muted);font-size:14px;}
.masonry{display:grid;grid-template-columns:1.15fr .85fr 1fr;grid-template-areas:"a a b" "a a c" "d e c" "d f f";gap:14px;}
.case{position:relative;overflow:hidden;border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px;background:#241C16;border:1px solid rgba(196,120,74,.2);transition:transform var(--ease);}
.case:hover{transform:translateY(-2px);}
.case::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--copper);}
.c1{grid-area:a;min-height:300px;background:#2a201b;}
.c2{grid-area:b;background:#3a242b;}
.c2::before{background:var(--wine);}
.c3{grid-area:c;background:#2c261c;}
.c3::before{background:var(--bronze);}
.c4{grid-area:d;background:#3a2a22;}
.c5{grid-area:e;background:#241910;}
.c6{grid-area:f;background:#2a2420;}
.c6::before{background:var(--wine);}
.case .chip{width:max-content;margin-bottom:10px;}
.case p{color:var(--muted);font-size:14px;margin-top:8px;max-width:360px;}
.news-list{display:grid;gap:0;border-top:1px solid var(--line);}
.news-row{display:grid;grid-template-columns:92px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);transition:transform var(--ease),border-color var(--ease),padding var(--ease);}
.news-row:hover{transform:translateY(-1px);border-left:2px solid var(--copper);padding-left:10px;}
.news-row time{color:var(--bronze);font-size:14px;}
.news-row p{color:var(--muted);font-size:14px;}
.more-wrap{margin-top:18px;}
.partner-row{display:flex;flex-wrap:wrap;gap:10px;}
.partner{min-width:140px;padding:16px 18px;border-radius:var(--radius);border:1px solid rgba(138,122,98,.28);background:transparent;color:var(--ink);font-weight:700;letter-spacing:-.02em;}
.faq-list{display:grid;gap:10px;}
.faq-item{background:var(--paper-2);border:1px solid rgba(138,122,98,.2);border-radius:var(--radius);padding:0 18px;}
.faq-item summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:64px;font-weight:700;letter-spacing:-.02em;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--copper);font-size:22px;line-height:1;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding:0 0 16px;color:var(--muted-2);}
.promise{background:var(--wine);color:var(--ivory);padding:28px 0;}
.promise-row{display:flex;align-items:center;justify-content:space-between;gap:28px;}
.promise h2{font-size:28px;letter-spacing:-.04em;}
.promise-desc{max-width:520px;color:#f3d5d8;font-size:14px;margin-top:6px;}
.promise-list{display:flex;gap:10px;flex-wrap:wrap;}
.promise-list li{border:1px solid rgba(243,237,228,.35);border-radius:4px;padding:10px 12px;font-weight:700;background:rgba(26,20,16,.12);}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start;}
.need-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field span{font-size:14px;font-weight:700;}
input,select,textarea{width:100%;background:#fffdf9;color:var(--ink);border:1px solid #ddd2c4;border-radius:4px;padding:12px 12px;outline:none;transition:border-color var(--ease),box-shadow var(--ease);}
textarea{min-height:120px;resize:vertical;}
input:hover,select:hover,textarea:hover{border-color:#c8b6a2;}
input:focus,select:focus,textarea:focus{border-color:var(--copper);box-shadow:0 0 0 3px rgba(196,120,74,.18);}
.form-hint{grid-column:1 / -1;color:var(--muted-2);font-size:14px;}
.site-footer{background:#140f0c;color:var(--muted);padding:28px 0 34px;border-top:1px solid rgba(196,120,74,.2);}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;}
.footer-brand{color:var(--ivory);font-weight:760;letter-spacing:-.03em;}
.footer-meta{display:grid;gap:4px;text-align:right;font-size:14px;}
.footer-meta a{color:var(--copper);}
@media (max-width:1200px){
.container{width:min(100% - 36px,1120px);}
}
@media (max-width:1024px){
.hero-title{font-size:46px;}
.scene-wide,.num-layout,.contact-grid{grid-template-columns:1fr;}
.scene-visual{min-height:280px;}
}
@media (max-width:860px){
.hero-grid,.matrix,.entry-grid{grid-template-columns:1fr;}
.matrix-card.main{min-height:0;}
}
@media (max-width:768px){
.section{padding:52px 0;}
.hero{padding:36px 0 52px;}
.stats-row,.steps,.bar-row,.bar-row.alt{grid-template-columns:1fr 1fr;}
.steps{display:flex;flex-direction:column;gap:0;border-left:2px solid var(--copper);margin-left:8px;}
.step{border:0;border-radius:0;background:transparent;min-height:0;padding:0 0 18px 16px;}
.masonry{grid-template-columns:1fr 1fr;grid-template-areas:"a b" "a c" "d e" "f f";}
.news-row{grid-template-columns:1fr;gap:4px;}
.promise-row,.footer-row{flex-direction:column;}
.footer-meta{text-align:left;}
.num-layout .section-head{margin-bottom:8px;}
}
@media (max-width:520px){
.stats-row,.bar-row,.bar-row.alt,.need-form,.masonry{grid-template-columns:1fr;grid-template-areas:none;}
.case,.c1,.c2,.c3,.c4,.c5,.c6{grid-area:auto;min-height:140px;}
.topic-row{grid-template-columns:1fr auto;align-items:start;}
.topic-row .row-main{grid-column:1 / -1;order:2;}
.row-meta{align-items:flex-end;}
.logo-text{font-size:13px;}
.container{width:calc(100% - 24px);}
}
@media (max-width:480px){
.nav-bar{gap:8px;}
.logo-text{font-size:12px;letter-spacing:-.05em;}
.btn-nav{min-height:34px;padding:0 8px;font-size:12px;}
.hero-title{font-size:34px;}
.hero-actions .btn{width:100%;}
.entry-card{min-height:0;padding:22px;}
.scene-visual{grid-template-columns:1fr;grid-template-rows:120px 90px 90px;}
.scene-visual span:nth-child(1){grid-row:auto;}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto;}
*,*::before,*::after{animation:none !important;transition:none !important;}
.btn:hover::before,.btn:focus-visible::before{transform:none;}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--copper);color:var(--ink);}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--ivory);color:var(--ink);}
}

/* roulang page: category1 */
:root{--bg:#1A1410;--bg-2:#221911;--paper:#F6F1EA;--paper-2:#fffdf9;--ivory:#F3EDE4;--ink:#241C16;--copper:#C4784A;--wine:#6E2E3A;--bronze:#8A7A62;--line:rgba(196,120,74,.32);--line-soft:rgba(138,122,98,.28);--shadow:0 10px 28px rgba(36,28,22,.08);--radius:8px;--radius-btn:4px;--ease:200ms ease;--max:1120px;--header:64px;--muted:#d2c4b4;--muted-2:#5e5348;}
/* roulang page: category1 */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ivory);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.75;text-rendering:optimizeLegibility;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
a{color:inherit;text-decoration:none;}
p,h1,h2,h3{margin:0;}
ul,ol{margin:0;padding:0;}
button{background:none;}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto;}
.site-header{position:sticky;top:0;z-index:40;height:var(--header);background:rgba(26,20,16,.94);border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(36,28,22,.16);backdrop-filter:saturate(1.1);}
.nav-bar{height:var(--header);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:flex;align-items:center;gap:10px;min-width:0;color:var(--ivory);font-weight:700;letter-spacing:-.04em;line-height:1.2;}
.logo-mark{display:flex;align-items:flex-end;gap:3px;height:16px;flex:none;}
.logo-mark i{display:block;width:3px;border-radius:1px;background:var(--bronze);}
.logo-mark i:nth-child(1){height:16px;background:var(--copper);}
.logo-mark i:nth-child(2){height:11px;}
.logo-mark i:nth-child(3){height:7px;}
.logo-text{font-size:16px;white-space:nowrap;}
.btn{isolation:isolate;position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border-radius:var(--radius-btn);border:1px solid var(--copper);background:transparent;cursor:pointer;font-weight:700;letter-spacing:.01em;white-space:nowrap;transition:color var(--ease),border-color var(--ease),transform var(--ease);}
.btn span{position:relative;z-index:1;}
.btn::before{content:"";position:absolute;inset:0;background:var(--copper);transform:scaleX(0);transform-origin:left center;transition:transform var(--ease);z-index:0;}
.btn:hover::before,.btn:focus-visible::before{transform:scaleX(1);}
.btn:hover,.btn:focus-visible{color:var(--ink);}
.btn:active{transform:translateY(1px);}
.btn-primary{color:var(--copper);}
.btn-nav{flex:none;}
.btn-ghost{color:var(--ivory);border-color:rgba(243,237,228,.42);}
.btn-ghost::before{background:var(--ivory);}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--copper);outline-offset:2px;}
.section{padding:76px 0;}
.section-paper{background:var(--paper);color:var(--ink);}
.section-dark{background:var(--bg);color:var(--ivory);}
.section-ink{background:var(--bg-2);color:var(--ivory);}
.section-head{max-width:760px;margin-bottom:28px;}
.section-title{font-size:clamp(28px,3vw,40px);line-height:1.22;letter-spacing:-.045em;font-weight:760;}
.section-desc{margin-top:12px;font-size:16px;line-height:1.75;}
.section-dark .section-desc,.section-ink .section-desc{color:var(--muted);}
.section-paper .section-desc{color:var(--muted-2);}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:4px;font-size:12px;font-weight:700;letter-spacing:.04em;}
.chip-1{background:rgba(196,120,74,.18);color:#e0b08a;}
.chip-2{background:rgba(110,46,58,.45);color:#f0c9cf;}
.chip-3{background:rgba(138,122,98,.28);color:#efe4d2;}
.section-paper .chip-1{color:#8a4e2c;background:rgba(196,120,74,.16);}
.section-paper .chip-2{color:#6E2E3A;background:rgba(110,46,58,.12);}
.section-paper .chip-3{color:#5c5144;background:rgba(138,122,98,.16);}
.topic-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 18px;background:var(--paper-2);border:1px solid rgba(138,122,98,.18);border-left:2px solid transparent;border-radius:var(--radius);box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.topic-row.lg{min-height:118px;}
.topic-row.md{min-height:92px;}
.topic-row.sm{min-height:72px;}
.topic-row:hover{transform:translateY(-1px);border-left-color:var(--copper);box-shadow:0 12px 26px rgba(36,28,22,.1);}
.topic-row h3{font-size:18px;line-height:1.45;letter-spacing:-.03em;}
.topic-row p{color:var(--muted-2);font-size:14px;}
.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px;color:var(--bronze);font-size:13px;white-space:nowrap;}
.cap-list{margin:16px 0 20px;display:grid;gap:10px;list-style:none;}
.cap-list li{padding-left:14px;position:relative;}
.cap-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--copper);}
.mast{padding:36px 0 42px;background:radial-gradient(900px 280px at 0% 0%,rgba(196,120,74,.16),transparent 60%),var(--bg);border-bottom:1px solid rgba(196,120,74,.16);}
.mast-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(240px,.7fr);gap:32px;align-items:end;}
.zone-no{color:var(--copper);font-size:13px;font-weight:760;letter-spacing:.18em;}
.mast-title{margin-top:10px;font-size:clamp(36px,5vw,60px);line-height:1.06;letter-spacing:-.055em;font-weight:760;}
.mast-lead{margin-top:14px;max-width:640px;color:var(--ivory);font-size:18px;}
.age-line{margin-top:10px;color:var(--bronze);font-size:13px;}
.mast-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.filter-panel{background:#241910;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);}
.filter-label{display:flex;justify-content:space-between;color:var(--bronze);font-size:13px;margin-bottom:12px;}
.filters{display:flex;flex-wrap:wrap;gap:8px;}
.filter-btn{min-height:32px;padding:0 12px;border-radius:4px;border:1px solid var(--line);color:var(--ivory);cursor:pointer;transition:border-color var(--ease),color var(--ease),background var(--ease);}
.filter-btn:hover,.filter-btn.active{border-color:var(--copper);color:#f3d2bc;background:rgba(196,120,74,.12);}
.split-band{background:var(--paper);color:var(--ink);}
.split{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(250px,.72fr);gap:22px;align-items:start;}
.list-block,.side-block{padding:64px 0;}
.post-list{display:grid;gap:12px;}
.side-card{position:sticky;top:84px;background:#241C16;color:var(--ivory);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.side-card h2{font-size:28px;letter-spacing:-.04em;line-height:1.25;}
.side-card .section-desc{color:var(--muted);}
.side-list{list-style:none;display:grid;gap:16px;margin-top:18px;}
.side-list li{display:grid;grid-template-columns:32px minmax(0,1fr);gap:8px;padding-top:12px;border-top:1px solid rgba(196,120,74,.2);}
.side-no{color:var(--copper);font-weight:760;letter-spacing:-.04em;}
.side-list h3{font-size:16px;letter-spacing:-.03em;}
.side-list p{color:var(--muted);font-size:14px;}
.rhythm-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;}
.rhythm-step{min-height:168px;padding:18px;border-radius:var(--radius);background:#2a211c;border:1px solid var(--line);border-top:2px solid var(--copper);}
.step-no{display:block;color:var(--copper);font-size:13px;letter-spacing:.14em;font-weight:760;}
.rhythm-step h3{margin:18px 0 8px;font-size:20px;letter-spacing:-.03em;}
.rhythm-step p{color:var(--muted);font-size:14px;}
.topic-list{display:grid;gap:10px;}
.topic-bar{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 16px;border-radius:var(--radius);background:var(--paper-2);border:1px solid rgba(138,122,98,.2);border-left:2px solid transparent;box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease);}
.topic-bar:hover{transform:translateY(-1px);border-left-color:var(--copper);}
.topic-index{color:var(--copper);font-weight:760;letter-spacing:-.04em;}
.topic-bar h3{font-size:18px;letter-spacing:-.03em;}
.topic-bar p{color:var(--muted-2);font-size:14px;}
.topic-bar em{font-style:normal;color:var(--bronze);font-size:13px;white-space:nowrap;}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.compare-col{border-radius:var(--radius);padding:24px;min-height:280px;}
.compare-col.before{background:#241910;border:1px solid rgba(110,46,58,.7);}
.compare-col.after{background:var(--paper);color:var(--ink);border:1px solid rgba(196,120,74,.4);}
.compare-col h3{font-size:24px;letter-spacing:-.04em;margin:8px 0 14px;}
.compare-kicker{font-size:12px;letter-spacing:.14em;font-weight:760;}
.before .compare-kicker{color:#e7b7bf;}
.after .compare-kicker{color:var(--copper);}
.compare-col ul{display:grid;gap:10px;list-style:none;}
.compare-col li{padding-left:14px;position:relative;}
.compare-col li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--copper);position:absolute;left:0;top:.7em;}
.before li{color:var(--muted);}
.after li{color:var(--muted-2);}
.faq-list{border-top:1px solid rgba(138,122,98,.28);}
.faq-list details{border-bottom:1px solid rgba(138,122,98,.28);}
.faq-list summary{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 0;cursor:pointer;font-weight:700;letter-spacing:-.03em;list-style:none;}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary::after{content:"+";color:var(--copper);font-weight:760;font-size:20px;line-height:1;}
.faq-list details[open] summary::after{content:"–";}
.faq-list details p{padding:0 0 16px;color:var(--muted-2);max-width:760px;}
.contact-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(280px,1.05fr);gap:36px;align-items:start;}
.contact-copy .section-desc{color:var(--muted);}
.contact-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.need-form{background:#241910;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);}
.field{margin-bottom:12px;}
.field label{display:block;margin-bottom:6px;color:var(--bronze);font-size:13px;}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:4px;background:#2c241d;color:var(--ivory);padding:10px 12px;color-scheme:dark;}
.field textarea{min-height:108px;resize:vertical;}
.form-note{margin-top:8px;color:var(--bronze);font-size:12px;}
.site-footer{border-top:1px solid var(--line);padding:28px 0 36px;background:var(--bg);color:var(--ivory);}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;}
.footer-brand{font-weight:760;letter-spacing:-.04em;}
.footer-meta{text-align:right;color:var(--bronze);}
.footer-meta a{color:var(--copper);}
.footer-meta a:hover{color:var(--ivory);}
@media (max-width:1200px){
  .mast-title{font-size:clamp(34px,5vw,52px);}
}
@media (max-width:1024px){
  .mast-grid,.split,.compare-grid,.contact-grid{grid-template-columns:1fr;}
  .side-card{position:static;}
  .rhythm-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .list-block,.side-block{padding:36px 0;}
  .side-block{padding-top:0;}
  .logo-text{font-size:14px;}
  .btn-nav{min-height:36px;padding:0 10px;font-size:13px;}
  .topic-row,.topic-bar{grid-template-columns:1fr;align-items:start;}
  .row-meta,.topic-bar em{align-items:flex-start;white-space:normal;}
  .rhythm-grid{grid-template-columns:1fr;margin-left:4px;padding-left:14px;border-left:2px solid var(--line);gap:0;}
  .rhythm-step{border-top:0;border-left:0;border-radius:0;background:transparent;min-height:0;padding:0 0 18px;}
  .footer-row{flex-direction:column;align-items:flex-start;}
  .footer-meta{text-align:left;}
}
@media (max-width:520px){
  .container{width:min(var(--max),calc(100% - 28px));}
  .logo{gap:6px;}
  .logo-text{font-size:12px;letter-spacing:-.06em;}
  .mast{padding:28px 0 32px;}
  .mast-lead{font-size:16px;}
  .filter-panel,.need-form,.side-card{padding:14px;}
}
@media (max-width:480px){
  .hero-actions,.mast-actions,.contact-actions{width:100%;}
  .mast-actions .btn,.contact-actions .btn,.need-form .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none !important;transition:none !important;}
}

/* roulang page: category2 */
:root{--bg:#1A1410;--bg-2:#221911;--paper:#F6F1EA;--paper-2:#fffdf9;--ivory:#F3EDE4;--ink:#241C16;--copper:#C4784A;--wine:#6E2E3A;--bronze:#8A7A62;--line:rgba(196,120,74,.32);--line-soft:rgba(138,122,98,.28);--shadow:0 10px 28px rgba(36,28,22,.08);--radius:8px;--radius-btn:4px;--ease:200ms ease;--max:1120px;--header:64px;--muted:#d2c4b4;--muted-2:#5e5348;}
/* roulang page: category2 */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ivory);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.75;text-rendering:optimizeLegibility;}
img{max-width:100%;display:block;}
h1,h2,h3,p,dl,dd,dt,ul{margin:0;padding:0;}
ul{list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:transparent;}
a{color:inherit;text-decoration:none;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto;}
.site-header{position:sticky;top:0;z-index:40;height:var(--header);background:rgba(26,20,16,.94);border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(36,28,22,.16);}
.nav-bar{height:var(--header);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:flex;align-items:center;gap:10px;min-width:0;color:var(--ivory);font-weight:700;letter-spacing:-.04em;line-height:1.2;}
.logo-text{font-size:16px;white-space:nowrap;}
.logo-mark{display:flex;gap:2px;flex:none;}
.logo-mark i{display:grid;place-items:center;width:16px;height:22px;border-radius:2px;background:rgba(196,120,74,.16);color:var(--copper);font-style:normal;font-size:10px;font-weight:700;}
.btn{isolation:isolate;position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border-radius:var(--radius-btn);border:1px solid var(--copper);background:transparent;cursor:pointer;font-weight:700;letter-spacing:.01em;white-space:nowrap;transition:color var(--ease),border-color var(--ease),transform var(--ease);}
.btn span{position:relative;z-index:1;}
.btn::before{content:"";position:absolute;inset:0;background:var(--copper);transform:scaleX(0);transform-origin:left center;transition:transform var(--ease);z-index:0;}
.btn:hover::before,.btn:focus-visible::before{transform:scaleX(1);}
.btn:hover,.btn:focus-visible{color:var(--ink);}
.btn:active{transform:translateY(1px);}
.btn-primary{color:var(--copper);}
.btn-nav{flex:none;}
.section{padding:76px 0;}
.section-paper{background:var(--paper);color:var(--ink);}
.section-dark{background:var(--bg);color:var(--ivory);}
.section-ink{background:var(--bg-2);color:var(--ivory);}
.section-head{max-width:760px;margin-bottom:28px;}
.section-title{font-size:clamp(28px,3vw,40px);line-height:1.22;letter-spacing:-.045em;font-weight:760;}
.section-desc{margin-top:12px;font-size:16px;line-height:1.75;}
.section-dark .section-desc,.section-ink .section-desc{color:var(--muted);}
.section-paper .section-desc{color:var(--muted-2);}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:4px;font-size:12px;font-weight:700;letter-spacing:.04em;}
.chip-2{background:rgba(110,46,58,.45);color:#f0c9cf;}
.chip-3{background:rgba(138,122,98,.28);color:#efe4d2;}
.section-paper .chip-2{color:#6E2E3A;background:rgba(110,46,58,.12);}
.section-paper .chip-3{color:#5c5144;background:rgba(138,122,98,.16);}
.topic-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 18px;background:var(--paper-2);border:1px solid rgba(138,122,98,.18);border-left:2px solid transparent;border-radius:var(--radius);box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.topic-row.lg{min-height:118px;}
.topic-row.md{min-height:92px;}
.topic-row.sm{min-height:72px;}
.topic-row:hover{transform:translateY(-1px);border-left-color:var(--copper);box-shadow:0 12px 26px rgba(36,28,22,.1);}
.topic-row h3{font-size:18px;line-height:1.45;letter-spacing:-.03em;}
.topic-row p{color:var(--muted-2);font-size:14px;margin-top:4px;}
.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px;color:var(--bronze);font-size:13px;white-space:nowrap;}
.masthead{padding:36px 0 42px;background:radial-gradient(900px 280px at 0% -20%,rgba(196,120,74,.18),transparent 60%),var(--bg);border-bottom:1px solid var(--line);}
.mast-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:36px;align-items:stretch;}
.zone-index{display:flex;gap:10px;color:var(--copper);font-weight:760;letter-spacing:.08em;font-size:13px;}
.zone-index span{border-bottom:1px solid var(--copper);padding-bottom:2px;}
.mast-title{margin-top:12px;font-size:clamp(36px,5vw,60px);line-height:1.08;letter-spacing:-.05em;font-weight:760;}
.mast-lead{margin-top:14px;max-width:38em;color:var(--ivory);font-size:18px;}
.mast-note{margin-top:18px;color:var(--bronze);font-size:13px;}
.versus{background:#241910;border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 8px;box-shadow:var(--shadow);display:flex;flex-direction:column;}
.versus-label{display:flex;justify-content:space-between;color:var(--bronze);font-size:13px;padding-bottom:12px;border-bottom:1px solid var(--line-soft);}
.versus-grid{display:grid;grid-template-columns:1fr 1fr;flex:1;}
.versus-grid > div{padding:18px 8px 16px;}
.versus-grid > div + div{border-left:1px solid var(--line-soft);padding-left:18px;}
.versus-zone{color:var(--copper);font-weight:760;letter-spacing:.12em;font-size:13px;}
.num{margin-top:8px;font-variant-numeric:tabular-nums;font-size:clamp(36px,4vw,52px);line-height:1;letter-spacing:-.05em;color:var(--copper);font-weight:760;}
.versus-foot{margin-top:8px;color:var(--muted);font-size:14px;}
.compare-board{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start;}
.col-label{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-weight:760;letter-spacing:-.03em;}
.col-label em{margin-left:auto;font-style:normal;color:var(--bronze);font-size:13px;font-weight:500;}
.topic-stack{display:grid;gap:10px;}
.more-row{display:flex;justify-content:flex-end;margin-top:18px;}
.more-link{color:var(--copper);font-weight:700;border-bottom:1px solid rgba(196,120,74,.45);padding-bottom:2px;}
.more-link:hover{color:var(--ink);}
.diff-row{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.diff-item{padding:28px 24px;background:#241910;min-height:210px;}
.diff-item + .diff-item{border-left:1px solid var(--line);}
.diff-no{display:block;color:var(--copper);font-size:28px;letter-spacing:-.04em;font-weight:760;line-height:1;}
.diff-item h3{margin:14px 0 8px;font-size:22px;letter-spacing:-.03em;}
.diff-item p{color:var(--muted);}
.scene-split{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:18px;}
.scene-main{min-height:420px;padding:32px;border-radius:var(--radius);background:#241C16;color:var(--ivory);display:flex;flex-direction:column;box-shadow:var(--shadow);}
.scene-kicker{color:var(--copper);font-size:13px;font-weight:760;letter-spacing:.14em;}
.scene-main h3,.scene-card h3{margin-top:12px;font-size:clamp(26px,3vw,36px);letter-spacing:-.045em;line-height:1.2;}
.scene-main p{margin-top:12px;color:var(--muted);max-width:40em;}
.scene-list{margin-top:auto;padding-top:24px;display:grid;gap:10px;}
.scene-list li{display:flex;justify-content:space-between;gap:16px;padding-top:10px;border-top:1px solid var(--line-soft);color:var(--ivory);font-size:15px;}
.scene-list span{color:var(--bronze);white-space:nowrap;}
.scene-side{display:grid;gap:18px;}
.scene-card{padding:22px;border-radius:var(--radius);background:var(--paper-2);border:1px solid rgba(138,122,98,.2);box-shadow:var(--shadow);}
.scene-card h3{font-size:24px;color:var(--ink);}
.scene-card p{margin-top:8px;color:var(--muted-2);}
.scene-card strong{display:block;margin-top:14px;color:var(--wine);font-size:13px;letter-spacing:.08em;}
.density-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(240px,.7fr);gap:28px;align-items:center;}
.meter + .meter{margin-top:22px;}
.meter-top{display:flex;justify-content:space-between;gap:12px;font-size:14px;margin-bottom:8px;}
.meter-top b{color:var(--copper);font-weight:760;}
.meter-track{height:8px;border-radius:4px;background:#2c241d;overflow:hidden;}
.meter-fill{display:block;height:100%;background:var(--copper);border-radius:4px;}
.fill-3{width:46%;background:var(--wine);}
.fill-2{width:82%;}
.days{display:grid;gap:12px;}
.days div{padding:16px 18px;border-radius:var(--radius);border:1px solid var(--line);background:#241910;}
.days dt{color:var(--copper);font-weight:760;font-size:13px;letter-spacing:.08em;}
.days dd{margin:4px 0 0;font-size:18px;letter-spacing:-.03em;}
.topic-strips{display:grid;gap:10px;}
.topic-strip{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 20px;background:var(--paper-2);border:1px solid rgba(138,122,98,.18);border-left:2px solid transparent;border-radius:var(--radius);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.topic-strip:hover{transform:translateY(-1px);border-left-color:var(--copper);box-shadow:var(--shadow);}
.strip-no{color:var(--copper);font-weight:760;letter-spacing:-.04em;font-size:20px;}
.topic-strip h3{font-size:18px;letter-spacing:-.03em;}
.topic-strip p{color:var(--muted-2);font-size:14px;}
.strip-date{color:var(--bronze);font-size:13px;white-space:nowrap;}
.qa-list{display:grid;gap:10px;}
.qa-item{border:1px solid var(--line);border-radius:var(--radius);background:#241910;overflow:hidden;}
.qa-item summary{cursor:pointer;list-style:none;padding:16px 18px;font-weight:760;letter-spacing:-.03em;display:flex;justify-content:space-between;gap:16px;align-items:center;}
.qa-item summary::-webkit-details-marker{display:none;}
.qa-item summary::after{content:"＋";color:var(--copper);font-weight:500;}
.qa-item[open] summary::after{content:"–";}
.qa-item[open] summary{border-bottom:1px solid var(--line-soft);}
.qa-item p{padding:14px 18px 18px;color:var(--muted);}
.close-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(280px,1fr);gap:36px;align-items:start;}
.close-copy .section-title{margin-bottom:12px;}
.close-copy p{color:var(--muted);max-width:36em;}
.close-copy .btn{margin-top:22px;}
.demand-form{background:var(--paper);color:var(--ink);border-radius:var(--radius);padding:22px;display:grid;gap:12px;box-shadow:var(--shadow);}
.demand-form h3{font-size:22px;letter-spacing:-.04em;}
.field{display:grid;gap:6px;}
.field span{font-size:13px;font-weight:700;color:var(--muted-2);}
input,select,textarea{width:100%;border:1px solid rgba(138,122,98,.4);background:#fffdf9;color:var(--ink);border-radius:4px;padding:10px 12px;min-height:42px;}
textarea{min-height:96px;resize:vertical;}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--copper) 50%),linear-gradient(135deg,var(--copper) 50%,transparent 50%);background-position:calc(100% - 18px) 18px,calc(100% - 12px) 18px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:32px;}
input:focus,select:focus,textarea:focus{outline:2px solid var(--copper);outline-offset:1px;border-color:var(--copper);}
.demand-form .btn{width:100%;}
.site-footer{background:#140f0c;border-top:1px solid var(--line);padding:28px 0;color:var(--muted);}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;}
.footer-brand{color:var(--ivory);font-weight:760;letter-spacing:-.04em;font-size:16px;}
.footer-meta{text-align:right;}
.footer-meta a{color:var(--copper);font-weight:700;}
.footer-meta a:hover{color:var(--ivory);}
@media (max-width:1200px){
.mast-grid,.compare-board,.scene-split,.density-grid,.close-grid{gap:22px;}
}
@media (max-width:1024px){
.scene-split,.density-grid,.close-grid{grid-template-columns:1fr;}
.scene-main{min-height:0;}
}
@media (max-width:768px){
.container{width:min(var(--max),calc(100% - 32px));}
.section{padding:52px 0;}
.mast-grid,.compare-board,.diff-row{grid-template-columns:1fr;}
.diff-item + .diff-item{border-left:0;border-top:1px solid var(--line);}
.topic-row{grid-template-columns:auto minmax(0,1fr);}
.row-meta{grid-column:2;flex-direction:row;justify-content:flex-start;align-items:center;gap:12px;}
.footer-row{flex-direction:column;align-items:flex-start;}
.footer-meta{text-align:left;}
.versus-grid > div + div{padding-left:16px;}
}
@media (max-width:480px){
.logo{gap:6px;}
.logo-text{font-size:12px;letter-spacing:-.06em;}
.logo-mark i{width:13px;height:18px;font-size:9px;}
.btn-nav{min-height:34px;padding:0 8px;font-size:12px;}
.nav-bar{gap:8px;}
.mast-title{font-size:34px;}
.topic-strip{grid-template-columns:auto minmax(0,1fr);}
.strip-date{grid-column:2;}
.scene-list li{flex-direction:column;gap:2px;}
.num{font-size:40px;}
}
@media (max-width:360px){
.logo-text{font-size:11px;}
.btn-nav{font-size:11px;padding:0 6px;}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto;}
*,*::before,*::after{animation:none !important;transition:none !important;}
}