/* roulang page: index */
:root{
  --ink:#17211C;--ink-2:#24332C;--brand:#1F4D3E;--brand-2:#2E6B56;
  --accent:#C96F4A;--accent-2:#E3B15A;--bg:#F7F2E8;--surface:#FFFFFF;
  --surface-2:#EFE6D6;--text:#1D2520;--muted:#6C756E;
  --line:rgba(31,77,62,.14);--success:#3E7A5E;--danger:#B24A3A;
  --radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-pill:999px;
  --shadow:0 1px 0 rgba(23,33,28,.04),0 10px 30px rgba(23,33,28,.08);
  --shadow-hover:0 18px 40px rgba(23,33,28,.12);
  --font-serif:"Noto Serif SC","Songti SC",SimSun,Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);line-height:1.15;letter-spacing:.01em;margin:0 0 .6em}
h1{font-size:clamp(30px,3.9vw,46px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.wrap-wide{max-width:1320px}
.sec{padding:88px 0}
.sec-white{background:var(--surface)}
.sec-warm{background:var(--bg)}
.sec-sand{background:var(--surface-2)}
.sec-dark{background:var(--brand);color:#EFE6D6}
.sec-dark h2,.sec-dark h3{color:#FBF6EC}
.sec-terra{background:#F7E7DD}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-2);background:rgba(31,77,62,.08);padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px}
.sec-dark .eyebrow{color:#F2E4C9;background:rgba(255,255,255,.12)}
.lead{font-size:16px;color:var(--muted);max-width:62ch;margin-top:-4px}
.sec-dark .lead{color:rgba(239,230,214,.82)}
.sec-head{margin-bottom:40px}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto;max-width:760px}
.sec-head.center .lead{margin-left:auto;margin-right:auto}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(23,33,28,.04),0 6px 18px rgba(23,33,28,.05)}
.nav{display:flex;align-items:center;gap:20px;height:78px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(150deg,var(--brand),var(--brand-2));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark svg{width:22px;height:22px;stroke:#F3E9D6;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-family:var(--font-serif);font-size:17px;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.logo-text small{font-size:11px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 13px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.nav-links a:hover{background:var(--surface-2);color:var(--brand)}
.nav-links a.active{background:rgba(31,77,62,.1);color:var(--brand);font-weight:600}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-pill{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid transparent;border-radius:var(--radius-pill);padding:7px 14px;transition:background .2s,border-color .2s,box-shadow .2s}
.search-pill svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8;flex-shrink:0}
.search-pill input{border:0;background:transparent;outline:none;width:168px;font-size:14px;color:var(--text)}
.search-pill input::placeholder{color:var(--muted)}
.search-pill:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.14)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;margin-left:auto}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(201,111,74,.35)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#B65F3C;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(31,77,62,.08);color:var(--brand)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:#F3E9D6;color:var(--brand)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn.is-disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-disabled:hover,.btn[disabled]:hover{transform:none;background:var(--accent);color:#fff}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--bg)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/a299c0f665c86b25.webp') center/cover no-repeat;opacity:.28}
.hero-grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(31,77,62,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(31,77,62,.06) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;padding:72px 0 84px}
.hero h1{margin-bottom:18px;font-size:clamp(28px,3.4vw,42px)}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:16.5px;color:#3A4A42;max-width:52ch;margin-bottom:26px}
.hero-search{display:grid;grid-template-columns:1fr 168px;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:12px;box-shadow:var(--shadow);max-width:560px}
.hero-search input,.hero-search select{height:46px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 14px;background:#FCF9F3;font-size:15px}
.hero-search input:focus,.hero-search select:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.12)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 22px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.pill{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--brand);background:rgba(255,255,255,.85);border:1px solid var(--line);padding:7px 14px;border-radius:var(--radius-pill)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--success)}
.hero-visual{position:relative}
.hero-visual .frame{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-hover);border:6px solid #fff;background:#fff}
.hero-visual .frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-datacard{position:absolute;left:-18px;bottom:-18px;background:#fff;border-radius:var(--radius-md);padding:14px 18px;box-shadow:var(--shadow-hover);display:flex;align-items:center;gap:12px;border:1px solid var(--line)}
.ring{width:40px;height:40px;border-radius:50%;border:3px solid rgba(31,77,62,.18);border-top-color:var(--accent-2);animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-datacard b{display:block;font-size:13px;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-datacard small{font-size:11.5px;color:var(--muted)}

/* kpi */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);overflow:hidden}
.kpi{padding:26px 24px;border-right:1px solid rgba(255,255,255,.14)}
.kpi:last-child{border-right:0}
.kpi .num{font-family:var(--font-serif);font-size:34px;color:#fff;font-variant-numeric:tabular-nums;line-height:1.1}
.kpi .num span{font-size:15px;margin-left:4px;color:rgba(239,230,214,.72)}
.kpi .kname{font-size:14px;color:rgba(239,230,214,.88);margin-top:6px}
.kpi .bars{display:flex;align-items:flex-end;gap:5px;height:36px;margin-top:16px}
.kpi .bars i{width:8px;border-radius:3px;background:linear-gradient(180deg,var(--accent-2),rgba(227,177,90,.28));display:block}
.tag-line{display:inline-block;font-size:11.5px;font-weight:600;color:#F3E9D6;background:rgba(255,255,255,.14);border-radius:var(--radius-pill);padding:3px 10px;margin-top:12px}

/* bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(148px,auto);gap:20px}
.bcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:26px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.bcard:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-2)}
.bcard .ico{width:44px;height:44px;border-radius:12px;background:rgba(31,77,62,.08);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.bcard .ico svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.bcard h3{margin-bottom:8px;font-size:19px}
.bcard p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.tag{font-size:12px;font-weight:600;color:var(--brand);background:rgba(31,77,62,.08);border-radius:var(--radius-pill);padding:4px 11px}
.tag.amber{color:#8A5C15;background:rgba(227,177,90,.24)}
.tag.terra{color:#8E4326;background:rgba(201,111,74,.16)}
.bcard.span2{grid-column:span 2}
.bcard.row2{grid-row:span 2}
.bcard.feature{background:linear-gradient(160deg,var(--brand),#153A2F);border-color:transparent}
.bcard.feature h3,.bcard.feature p{color:#F1E7D5}
.bcard.feature p{color:rgba(241,231,213,.82)}
.bcard.feature .ico{background:rgba(255,255,255,.14)}
.bcard.feature .ico svg{stroke:#F3E9D6}
.bcard.feature .tag{background:rgba(255,255,255,.16);color:#F3E9D6}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.panel.good{border-color:rgba(31,77,62,.32)}
.panel h3{font-size:19px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.cmp-row{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-2)}
.cmp-row:last-child{border-bottom:0}
.mark{width:22px;height:22px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:2px}
.mark.x{background:rgba(178,74,58,.12);color:var(--danger)}
.mark.v{background:rgba(62,122,94,.14);color:var(--success)}
.compare-note{margin-top:26px;font-size:14px;color:var(--muted);background:rgba(255,255,255,.7);border-left:3px solid var(--accent);padding:12px 18px;border-radius:0 var(--radius-sm) var(--radius-sm) 0}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative;padding-top:34px}
.timeline::before{content:"";position:absolute;top:9px;left:6%;right:6%;border-top:2px dashed rgba(31,77,62,.28)}
.tnode{position:relative;padding-top:8px}
.tnode::before{content:"";position:absolute;top:-31px;left:0;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand-2)}
.tnode .ttime{font-size:12.5px;font-weight:700;color:var(--accent);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.tnode h3{font-size:17px;margin:6px 0 6px}
.tnode p{font-size:14px;color:var(--muted);margin:0}

/* news */
.news-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:start}
.news-feature{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-2)}
.news-feature img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-feature .body{padding:24px}
.news-feature h3{font-size:21px;margin:12px 0 10px}
.news-feature p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{display:grid;grid-template-columns:120px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:14px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.news-item:hover{border-color:var(--brand-2);box-shadow:var(--shadow);transform:translateY(-2px)}
.news-item img{width:120px;height:80px;object-fit:cover;border-radius:var(--radius-sm)}
.news-item h4{font-family:var(--font-sans);font-size:15.5px;font-weight:600;color:var(--ink);margin:6px 0 6px;line-height:1.45}
.news-item .sum{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{display:inline-block;font-size:12px;font-weight:600;border-radius:var(--radius-pill);padding:3px 11px}
.badge-brand{color:var(--brand);background:rgba(31,77,62,.09)}
.badge-amber{color:#8A5C15;background:rgba(227,177,90,.26)}
.meta{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-more{margin-top:24px}
.empty-note{background:#fff;border:1px dashed var(--line);border-radius:var(--radius-md);padding:36px;text-align:center;color:var(--muted);font-size:15px}

/* guard */
.guard-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
.guard-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.guard-item{padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.6)}
.guard-item svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;margin-bottom:10px}
.guard-item h3{font-size:16.5px;margin-bottom:6px}
.guard-item p{font-size:13.8px;color:var(--muted);margin:0}

/* tabs */
.qa-tabs{display:flex;flex-wrap:wrap;gap:10px}
.qa-tab{padding:11px 20px;border-radius:var(--radius-pill);border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--ink-2);transition:all .2s ease}
.qa-tab:hover{border-color:var(--brand-2);color:var(--brand)}
.qa-tab.active{background:var(--brand);border-color:var(--brand);color:#fff}
.qa-panels{margin-top:22px}
.qa-panel{display:none;background:var(--surface-2);border-radius:var(--radius-md);padding:26px 28px;font-size:15px;color:#2E3B34}
.qa-panel.active{display:block}
.qa-panel strong{color:var(--brand)}

/* faq */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.open{border-left:3px solid var(--accent);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink)}
.faq-q .chev{width:20px;height:20px;flex-shrink:0;position:relative}
.faq-q .chev::before,.faq-q .chev::after{content:"";position:absolute;top:9px;left:2px;width:16px;height:2px;background:var(--brand);transition:transform .25s ease}
.faq-q .chev::after{transform:rotate(90deg)}
.faq-item.open .chev::after{transform:rotate(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;margin:0;font-size:14.8px;color:var(--muted)}
.faq-item.open .faq-a{max-height:340px}

/* form */
.form-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:start}
.form-card{background:#fff;border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-hover)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#FCFAF5;font-size:15px;transition:border-color .2s,box-shadow .2s,background .2s}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.14)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);margin:6px 0 20px}
.check input{width:16px;height:16px;margin-top:4px;flex-shrink:0}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:14px}
.dark-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:14.6px;color:rgba(243,233,214,.9)}
.dark-list li:last-child{border-bottom:0}
.dark-list .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);flex-shrink:0;margin-top:9px}

/* areas */
.area-tags{display:flex;flex-wrap:wrap;gap:10px}
.area-tag{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink-2);transition:all .2s ease}
.area-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--success)}
.area-tag:hover{border-color:var(--brand);color:var(--brand);background:rgba(31,77,62,.06);transform:translateY(-1px)}

/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:block}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-2)}
.topic-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.topic-card .body{padding:22px}
.topic-card h3{font-size:18.5px;margin:10px 0 8px}
.topic-card p{font-size:14px;color:var(--muted);margin:0}

/* safety guide */
.guide-row{display:grid;grid-template-columns:200px 1fr;gap:26px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
.guide-row:last-of-type{border-bottom:0}
.guide-row img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-md)}
.guide-row h3{font-size:18px;margin-bottom:6px}
.guide-row p{font-size:14.5px;color:var(--muted);margin:0}

/* download */
.download{display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:space-between;background:#fff;border:1px solid rgba(201,111,74,.28);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.download-left{display:flex;align-items:center;gap:20px;flex:1 1 420px}
.dl-icon{width:64px;height:64px;border-radius:var(--radius-md);background:rgba(201,111,74,.14);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.dl-icon svg{width:30px;height:30px;stroke:var(--accent);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.download h3{font-size:19px;margin-bottom:6px}
.download p{font-size:14px;color:var(--muted);margin:0}
.dl-actions{display:flex;gap:12px;flex-wrap:wrap}

/* subscribe */
.sub-row{display:flex;gap:12px;max-width:620px;margin-top:22px}
.sub-row input{flex:1;height:50px;border-radius:var(--radius-pill);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.1);padding:0 20px;color:#F3E9D6;font-size:15px}
.sub-row input::placeholder{color:rgba(243,233,214,.6)}
.sub-row input:focus{outline:none;border-color:var(--accent-2);background:rgba(255,255,255,.16);box-shadow:0 0 0 3px rgba(227,177,90,.24)}
.sub-note{font-size:12.5px;color:rgba(243,233,214,.66);margin-top:12px}

/* footer */
.site-footer{background:#16261F;color:#D9CFBD;padding:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding:64px 0 44px}
.footer-brand .logo-text strong{color:#F3E9D6}
.footer-brand .logo-text small{color:rgba(217,207,189,.7)}
.footer-brand p{font-size:13.5px;color:rgba(217,207,189,.78);margin:18px 0 0;max-width:34ch}
.footer-col h4{font-family:var(--font-sans);font-size:14px;font-weight:700;color:#F3E9D6;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;font-size:13.8px;color:rgba(217,207,189,.82);padding:5px 0}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{border-top:1px solid rgba(217,207,189,.16);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:12.8px;color:rgba(217,207,189,.66)}
.footer-bottom a{color:rgba(217,207,189,.86)}
.footer-bottom a:hover{color:var(--accent-2)}

/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:200;display:none}
.drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(23,33,28,.5)}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,84vw);background:#fff;padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:-20px 0 50px rgba(23,33,28,.2);transform:translateX(100%);transition:transform .26s ease;overflow-y:auto}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;font-size:18px;line-height:1;color:var(--ink)}
.drawer a.drawer-link{padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.drawer a.drawer-link:hover{background:var(--surface-2);color:var(--brand)}
.drawer .search-pill{margin:14px 0;width:100%}
.drawer .search-pill input{width:100%}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .search-pill{display:none}
  .nav-right .btn{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
  .hero-visual{max-width:620px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bcard.span2{grid-column:span 2}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .kpi:nth-child(2){border-right:0}
  .kpi:nth-child(1),.kpi:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14)}
  .news-grid{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .guard-wrap{grid-template-columns:1fr;gap:28px}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .topic-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .timeline{grid-template-columns:1fr 1fr;gap:24px}
  .timeline::before{display:none}
  .tnode{padding-left:22px;border-left:2px dashed rgba(31,77,62,.24)}
  .tnode::before{top:6px;left:-8px}
}
@media (max-width:640px){
  .sec{padding:52px 0}
  .wrap{padding:0 18px}
  h1{font-size:clamp(24px,6vw,30px)}
  .hero-search{grid-template-columns:1fr}
  .hero-datacard{left:auto;right:8px;bottom:-14px;padding:10px 14px}
  .hero-actions .btn{width:100%}
  .bento{grid-template-columns:1fr}
  .bcard.span2,.bcard.row2{grid-column:span 1;grid-row:auto}
  .kpi-grid{grid-template-columns:1fr}
  .kpi{border-right:0;border-bottom:1px solid rgba(255,255,255,.14)}
  .kpi:last-child{border-bottom:0}
  .topic-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .guide-row{grid-template-columns:1fr;gap:14px}
  .guide-row img{aspect-ratio:16/9}
  .field-row{grid-template-columns:1fr}
  .news-item{grid-template-columns:96px 1fr;gap:12px}
  .news-item img{width:96px;height:68px}
  .sub-row{flex-direction:column}
  .sub-row .btn,.sub-row input{width:100%}
  .download{padding:24px}
  .dl-actions{width:100%}
  .dl-actions .btn{flex:1 1 auto}
  .timeline{grid-template-columns:1fr}
  .compare-note{margin-top:18px}
}

/* roulang page: category1 */
:root{
  --ink:#17211C;--ink-2:#24332C;--brand:#1F4D3E;--brand-2:#2E6B56;
  --accent:#C96F4A;--accent-2:#E3B15A;--bg:#F7F2E8;--surface:#FFFFFF;
  --surface-2:#EFE6D6;--text:#1D2520;--muted:#6C756E;
  --line:rgba(31,77,62,.14);--success:#3E7A5E;--danger:#B24A3A;
  --radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-pill:999px;
  --shadow:0 1px 0 rgba(23,33,28,.04),0 10px 30px rgba(23,33,28,.08);
  --shadow-hover:0 18px 40px rgba(23,33,28,.12);
  --font-serif:"Noto Serif SC","Songti SC",SimSun,Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font-serif);line-height:1.18;letter-spacing:.01em;margin:0 0 14px;color:var(--ink);font-weight:700}
h1{font-size:clamp(30px,4.4vw,46px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px}
h4{font-size:16px}
p{margin:0 0 14px}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(201,111,74,.32);border-radius:8px}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
img{object-fit:cover}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.wrap-wide{max-width:1320px;margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand-2);background:rgba(31,77,62,.08);padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px}
.sec-dark .eyebrow{color:#F2E4C9;background:rgba(255,255,255,.12)}
.lead{font-size:16px;color:var(--muted);max-width:62ch;margin:0}
.sec-dark .lead{color:rgba(239,230,214,.82)}
.section{padding:84px 0;border-top:1px solid var(--line)}
.section-sm{padding:56px 0;border-top:1px solid var(--line)}
.bg-white{background:var(--surface)}
.bg-sand{background:var(--bg)}
.bg-sand2{background:var(--surface-2)}
.bg-terra{background:#F7E7DD}
.sec-dark{background:var(--ink);color:rgba(239,230,214,.86)}
.sec-dark h2,.sec-dark h3{color:#F6EEDD}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:40px}
.sec-head h2{margin-bottom:8px}
.sec-head .lead{max-width:56ch}
/* header */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(23,33,28,.04),0 6px 18px rgba(23,33,28,.05)}
.nav{display:flex;align-items:center;gap:20px;height:78px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(150deg,var(--brand),var(--brand-2));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark svg{width:22px;height:22px;stroke:#F3E9D6;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-family:var(--font-serif);font-size:17px;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.logo-text small{font-size:11px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 13px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.nav-links a:hover{background:var(--surface-2);color:var(--brand)}
.nav-links a.active{background:rgba(31,77,62,.1);color:var(--brand);font-weight:600}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-pill{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid transparent;border-radius:var(--radius-pill);padding:7px 14px;transition:background .2s,border-color .2s,box-shadow .2s}
.search-pill svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8;flex-shrink:0}
.search-pill input{border:0;background:transparent;outline:none;width:168px;font-size:14px;color:var(--text)}
.search-pill input::placeholder{color:var(--muted)}
.search-pill:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.14)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(201,111,74,.35)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#B65F3C;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(31,77,62,.08);color:var(--brand)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:#F3E9D6;color:var(--brand)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-pill);line-height:1.6}
.badge-green{background:rgba(31,77,62,.1);color:var(--brand)}
.badge-amber{background:rgba(227,177,90,.22);color:#8A5D14}
.badge-terra{background:rgba(201,111,74,.14);color:#9E4E2F}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block}
.dot.amber{background:var(--accent-2)}
.dot.terra{background:var(--accent)}
/* headband */
.headband{position:relative;background:var(--bg);overflow:hidden}
.headband::before{content:"";position:absolute;inset:0;background:url('/assets/images/2debdcc3b9b51efe.webp') center/cover no-repeat;opacity:.16}
.headband::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(31,77,62,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(31,77,62,.06) 1px,transparent 1px);background-size:56px 56px;opacity:.8}
.headband-inner{position:relative;z-index:2;padding:44px 0 48px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--brand-2)}
.crumbs span.sep{color:rgba(31,77,62,.35)}
.headband .grid-x{display:flex;flex-wrap:wrap;align-items:center;gap:36px}
.headband .grid-x>.cell{flex:1 1 520px;min-width:0}
.headband .grid-x>.cell.head-media{flex:0 1 380px}
.headband h1{margin-bottom:16px}
.headband h1 .hl{color:var(--brand)}
.headband-note{font-size:15.5px;color:#3A4A42;max-width:60ch;margin-bottom:22px}
.head-media{position:relative}
.head-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);aspect-ratio:16/10;width:100%}
.head-media .stamp{position:absolute;left:16px;bottom:16px;background:rgba(23,33,28,.88);color:#F6EEDD;border-radius:var(--radius-pill);padding:8px 16px;font-size:12.5px;display:inline-flex;align-items:center;gap:8px;backdrop-filter:blur(4px)}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:6px}
.filter-group{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);padding:5px 8px 5px 14px;box-shadow:0 1px 0 rgba(23,33,28,.03)}
.filter-group>span{font-size:12.5px;color:var(--muted);white-space:nowrap}
.chip{border:1px solid transparent;background:transparent;border-radius:var(--radius-pill);padding:6px 13px;font-size:13px;color:var(--ink-2);transition:background .2s,color .2s}
.chip:hover{background:var(--surface-2);color:var(--brand)}
.chip.is-active{background:var(--brand);color:#F4EBD9;font-weight:600}
.filter-select{border:0;background:transparent;font-size:13.5px;color:var(--ink-2);padding:6px 4px;outline:none;max-width:180px}
/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--radius-md);padding:24px 26px;box-shadow:var(--shadow);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.stat-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--brand-2)}
.stat-card .num{font-family:var(--font-serif);font-size:32px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1;display:block;margin-bottom:6px}
.stat-card .num small{font-size:14px;color:var(--muted);font-family:var(--font-sans);margin-left:4px}
.stat-card h3{font-size:16px;margin-bottom:6px}
.stat-card p{font-size:13.5px;color:var(--muted);margin:0}
.stat-foot{font-size:12.5px;color:var(--muted);margin-top:18px}
/* feature + news list */
.feature{display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);margin-bottom:28px;transition:box-shadow .22s ease,border-color .22s ease}
.feature:hover{box-shadow:var(--shadow-hover);border-color:var(--brand-2)}
.feature-media{display:block;overflow:hidden}
.feature-media img{width:100%;height:100%;min-height:280px;aspect-ratio:16/10;transition:transform .35s ease}
.feature:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:34px 36px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.feature-body h3{font-size:24px;margin:0}
.feature-body h3 a{color:var(--ink)}
.feature-body h3 a:hover{color:var(--accent)}
.feature-body p{color:var(--muted);margin:0;font-size:15px}
.meta-line{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-list{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.news-row{display:grid;grid-template-columns:132px 1fr auto;gap:20px;align-items:center;padding:18px 24px;border-bottom:1px solid var(--line);transition:background .2s ease}
.news-row:last-child{border-bottom:0}
.news-row:hover{background:#FBF6EC}
.news-thumb img{width:132px;height:88px;border-radius:var(--radius-sm);object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:5px;min-width:0}
.news-body strong{font-size:16.5px;font-family:var(--font-serif);color:var(--ink);line-height:1.4}
.news-row:hover .news-body strong{color:var(--brand)}
.news-body .ex{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-time{font-size:12.5px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.list-foot{display:flex;justify-content:center;margin-top:28px}
.empty-note{background:#fff;border:1px dashed var(--line);border-radius:var(--radius-md);padding:36px;text-align:center;color:var(--muted);font-size:14.5px}
/* pick cards */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pick-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.pick-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-2)}
.pick-card img{aspect-ratio:3/2;width:100%}
.pick-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.pick-card h3{font-size:18.5px;margin:0;line-height:1.4}
.pick-card p{font-size:13.8px;color:var(--muted);margin:0}
.pick-card .tag{align-self:flex-start}
/* topic tags */
.topic-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.topic-tags a,.topic-tags span.tag-pill{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-pill);padding:8px 16px;font-size:13.5px;color:var(--ink-2);transition:background .2s,border-color .2s,color .2s,transform .2s}
.topic-tags a:hover{background:var(--surface-2);border-color:var(--brand-2);color:var(--brand);transform:translateY(-1px)}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-md);padding:24px;transition:background .2s ease,box-shadow .2s ease}
.topic-card:hover{background:#fff;box-shadow:var(--shadow)}
.topic-card h3{font-size:17.5px;margin-bottom:8px}
.topic-card p{font-size:13.5px;color:var(--muted);margin:0}
/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:0 24px;box-shadow:var(--shadow);position:relative;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .25s ease}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item[open]{border-color:var(--brand-2);box-shadow:var(--shadow-hover)}
.faq-item summary{list-style:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);padding:20px 36px 20px 0;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:18px;font-size:20px;color:var(--brand);font-weight:400;transition:transform .2s ease}
.faq-item[open] summary::after{content:"–";color:var(--accent)}
.faq-item .ans{padding:0 0 22px;font-size:14.5px;color:var(--muted);max-width:76ch}
.faq-item .ans p{margin:0 0 8px}
.faq-item .ans p:last-child{margin-bottom:0}
/* safety tips */
.tip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.tip-card{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow);transition:box-shadow .2s ease,border-color .2s ease}
.tip-card:hover{box-shadow:var(--shadow-hover);border-color:var(--brand-2)}
.tip-icon{width:46px;height:46px;border-radius:14px;background:rgba(31,77,62,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tip-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tip-card h3{font-size:16.5px;margin-bottom:6px}
.tip-card p{font-size:13.8px;color:var(--muted);margin:0}
/* subscribe */
.subscribe-box{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 38px;box-shadow:var(--shadow)}
.subscribe-box h2{margin-bottom:8px;font-size:26px}
.subscribe-box p{margin:0;color:var(--muted);font-size:14.5px;max-width:52ch}
.sub-form{display:flex;gap:12px;flex-wrap:wrap;min-width:320px;flex:1 1 360px;justify-content:flex-end}
.sub-form input{flex:1 1 220px;height:50px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 16px;background:#FCF9F3;font-size:15px}
.sub-form input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.12)}
.form-note{font-size:12.5px;color:var(--muted);margin-top:10px;width:100%;text-align:right}
/* back bar */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.back-bar .links{display:flex;gap:22px;font-size:14px}
.back-bar .links a{border-bottom:1px solid rgba(31,77,62,.3);padding-bottom:2px}
/* footer */
.site-footer{background:var(--ink);color:rgba(239,230,214,.78);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text strong{color:#F6EEDD}
.footer-brand .logo-text small{color:rgba(239,230,214,.6)}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(239,230,214,.7);margin:0;max-width:36ch}
.footer-col h4{color:#F6EEDD;font-size:14.5px;font-family:var(--font-sans);font-weight:600;letter-spacing:.04em;margin-bottom:14px}
.footer-col a{display:block;font-size:13.5px;color:rgba(239,230,214,.72);padding:5px 0;transition:color .2s ease}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{border-top:1px solid rgba(239,230,214,.16);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(239,230,214,.6)}
.footer-bottom a{color:rgba(239,230,214,.78)}
.footer-bottom a:hover{color:var(--accent-2)}
/* responsive */
@media (max-width:1024px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .pick-grid,.topic-grid{grid-template-columns:repeat(2,1fr)}
  .feature{grid-template-columns:1fr}
  .feature-media img{min-height:220px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav{height:auto;padding:14px 0;flex-wrap:wrap;gap:12px}
  .nav-links{display:none;order:4;width:100%;flex-direction:column;align-items:stretch;gap:2px;padding-top:10px;border-top:1px solid var(--line);margin-top:6px}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 12px;border-radius:var(--radius-sm)}
  .search-pill{display:none}
  .nav-toggle{display:flex}
  .section{padding:56px 0}
  .section-sm{padding:44px 0}
  .headband .grid-x{gap:28px}
  .headband .grid-x>.cell.head-media{flex:1 1 100%}
  .news-row{grid-template-columns:1fr;gap:12px;padding:18px 20px}
  .news-thumb img{width:100%;height:170px}
  .news-time{justify-self:start}
  .tip-grid{grid-template-columns:1fr}
  .subscribe-box{padding:28px 24px}
  .sub-form{justify-content:flex-start}
  .form-note{text-align:left}
}
@media (max-width:640px){
  .wrap,.wrap-wide{padding:0 18px}
  .stat-grid,.pick-grid,.topic-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .feature-body{padding:24px 22px}
  .btn{width:100%}
  .btn.btn-sm{width:auto}
  .filter-group{width:100%;justify-content:space-between}
  .filter-select{max-width:none;width:100%}
  .chip{padding:6px 11px;font-size:12.5px}
  .back-bar .links{gap:16px}
}

/* roulang page: article */
:root{
  --ink:#17211C;--ink-2:#24332C;--brand:#1F4D3E;--brand-2:#2E6B56;
  --accent:#C96F4A;--accent-2:#E3B15A;--bg:#F7F2E8;--surface:#FFFFFF;
  --surface-2:#EFE6D6;--text:#1D2520;--muted:#6C756E;
  --line:rgba(31,77,62,.14);--success:#3E7A5E;--danger:#B24A3A;
  --radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-pill:999px;
  --shadow:0 1px 0 rgba(23,33,28,.04),0 10px 30px rgba(23,33,28,.08);
  --shadow-hover:0 18px 40px rgba(23,33,28,.12);
  --font-serif:"Noto Serif SC","Songti SC",SimSun,Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.7;
  color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin-top:0}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);line-height:1.18;letter-spacing:.01em}
p{line-height:1.75}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:76px 0}
.section-sand{background:var(--surface-2)}
.section-white{background:var(--surface)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--brand-2);
  background:rgba(31,77,62,.08);padding:6px 14px;border-radius:var(--radius-pill);
  margin-bottom:16px;
}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{margin-bottom:12px;font-size:clamp(26px,3.2vw,36px)}
.lead{font-size:16px;color:var(--muted);max-width:66ch;margin-bottom:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(201,111,74,.35)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#B65F3C;color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(31,77,62,.08);color:var(--brand)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:#F3E9D6;color:var(--brand)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 11px;border-radius:var(--radius-pill);line-height:1.4;
}
.badge-brand{background:rgba(31,77,62,.1);color:var(--brand)}
.badge-amber{background:rgba(227,177,90,.2);color:#8A5B16}
.badge-terra{background:rgba(201,111,74,.14);color:#9E4D2E}
/* Header */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(23,33,28,.04),0 6px 18px rgba(23,33,28,.05);
}
.nav{display:flex;align-items:center;gap:20px;height:78px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(150deg,var(--brand),var(--brand-2));
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.logo-mark svg{width:22px;height:22px;stroke:#F3E9D6;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-family:var(--font-serif);font-size:17px;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.logo-text small{font-size:11px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:8px 13px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:500;
  color:var(--ink-2);white-space:nowrap;
}
.nav-links a:hover{background:var(--surface-2);color:var(--brand)}
.nav-links a.active{background:rgba(31,77,62,.1);color:var(--brand);font-weight:600}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-pill{
  display:flex;align-items:center;gap:8px;background:var(--surface-2);
  border:1px solid transparent;border-radius:var(--radius-pill);padding:7px 14px;
  transition:background .2s,border-color .2s,box-shadow .2s;
}
.search-pill svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8;flex-shrink:0}
.search-pill input{border:0;background:transparent;outline:none;width:168px;font-size:14px;color:var(--text)}
.search-pill input::placeholder{color:var(--muted)}
.search-pill:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,77,62,.14)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
/* Article hero */
.article-hero{
  position:relative;overflow:hidden;background:var(--surface-2);
  border-bottom:1px solid var(--line);padding:42px 0 38px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/2debdcc3b9b51efe.webp') center/cover no-repeat;
  opacity:.11;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(31,77,62,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(31,77,62,.06) 1px,transparent 1px);
  background-size:58px 58px;mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  pointer-events:none;
}
.article-hero .wrap{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--brand)}
.crumbs span{color:rgba(108,117,110,.7)}
.crumbs .current{color:var(--ink-2);max-width:68ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.article-hero h1{
  font-size:clamp(30px,4.4vw,50px);margin-bottom:16px;max-width:20ch;
  color:var(--ink);line-height:1.16;
}
.article-deck{max-width:78ch;font-size:16.5px;color:#3C4A43;margin-bottom:22px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--muted)}
.article-meta .copy-link{
  border:1px solid var(--line);background:#fff;color:var(--brand);border-radius:var(--radius-pill);
  padding:6px 13px;font-size:13px;font-weight:600;transition:background .2s,border-color .2s;
}
.article-meta .copy-link:hover{background:var(--bg);border-color:var(--brand)}
.article-meta .copy-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(201,111,74,.3)}
/* Keypoints */
.keypoints-card{
  display:grid;grid-template-columns:260px minmax(0,1fr);gap:32px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 32px;box-shadow:var(--shadow);
}
.keypoints-title h2{font-size:24px;margin-bottom:8px}
.keypoints-title .eyebrow{margin-bottom:10px}
.keypoints-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.keypoints-list li{
  position:relative;padding-left:22px;color:#34423B;font-size:15.5px;
  border-bottom:1px dashed rgba(31,77,62,.14);padding-bottom:12px;
}
.keypoints-list li:last-child{border-bottom:0;padding-bottom:0}
.keypoints-list li::before{
  content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(201,111,74,.12);
}
/* Article layout */
.article-section{background:#fff}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:760px;font-size:18px;line-height:1.9;color:#28332D}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:28px;margin:42px 0 16px;padding-bottom:10px;
  border-bottom:1px solid rgba(31,77,62,.14);
}
.article-body h3{font-size:22px;margin:32px 0 12px}
.article-body p{margin-bottom:1.2em}
.article-body a{text-decoration:underline;text-underline-offset:3px}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body li{margin-bottom:.5em}
.article-body ul li::marker{color:var(--accent)}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:var(--surface-2);color:#35443D;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:24px auto;box-shadow:var(--shadow)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:11px 13px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--surface-2);font-weight:600;color:var(--ink)}
.article-body tr:nth-child(even) td{background:#FCFAF5}
.article-body .table-scroll{overflow-x:auto;margin:24px 0;border-radius:var(--radius-sm)}
.article-body code{
  background:var(--surface-2);padding:2px 6px;border-radius:5px;
  font-size:.92em;color:#8A4328;
}
.empty-state{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 32px;text-align:center;max-width:640px;
}
.empty-state h2{font-size:28px;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:22px}
/* TOC */
.article-aside{min-width:0}
.toc-card{
  position:sticky;top:100px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow);
}
.toc-title{font-size:18px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.toc-nav{display:grid;gap:4px}
.toc-nav a{
  display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;
}
.toc-nav a:hover{background:var(--surface-2);color:var(--brand);border-left-color:var(--accent)}
.toc-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
/* Related */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,77,62,.38);color:inherit}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.related-card:hover .related-thumb img{transform:scale(1.035)}
.related-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.related-body h3{font-size:19px;margin:0;line-height:1.35}
.related-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.65}
.related-body .meta{font-size:12px;color:var(--muted);margin-top:auto;padding-top:8px}
/* Prev next */
.prevnext-section{background:#fff;padding-top:0}
.prevnext-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.prevnext-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px 22px;display:flex;flex-direction:column;gap:6px;
}
.prevnext-card.is-disabled{opacity:.62;background:#FBF8F1}
.pn-label{font-size:12px;font-weight:600;color:var(--brand-2);letter-spacing:.08em}
.pn-title{font-size:15.5px;color:var(--ink-2);font-family:var(--font-serif)}
/* Author */
.author-section{background:var(--surface-2)}
.author-card{
  display:flex;gap:22px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px 30px;box-shadow:var(--shadow);
}
.author-avatar{
  width:64px;height:64px;border-radius:18px;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand),var(--brand-2));color:#F3E9D6;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);
  font-size:26px;font-weight:600;
}
.author-info h2{font-size:23px;margin-bottom:8px}
.author-info p{font-size:14.5px;color:var(--muted);margin-bottom:10px;max-width:80ch}
.author-meta{font-size:12.5px;color:var(--brand-2);font-weight:600}
/* Feedback */
.feedback-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.feedback-copy h2{font-size:clamp(26px,3.2vw,34px);margin-bottom:12px}
.feedback-copy p{color:#425049;max-width:54ch;margin-bottom:16px}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.check-list li{position:relative;padding-left:22px;font-size:14px;color:var(--muted)}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--success);font-weight:700;
}
.feedback-form,.subscribe-form{display:grid;gap:16px}
.feedback-form label,.subscribe-form label{display:grid;gap:7px;font-size:14px;font-weight:600;color:var(--ink-2)}
.feedback-form input,.feedback-form textarea,.subscribe-form input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;background:#fff;font-size:15px;color:var(--text);
  transition:border-color .2s,box-shadow .2s;
}
.feedback-form textarea{height:auto;padding:12px 14px;resize:vertical;min-height:118px}
.feedback-form input:focus,.feedback-form textarea:focus,.subscribe-form input:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,77,62,.12);
}
.feedback-form .btn{justify-self:start;min-width:160px}
.form-note{font-size:13px;color:var(--success);min-height:20px;margin:0}
.form-note.is-error{color:var(--danger)}
/* Subscribe */
.subscribe-section{background:var(--ink);color:#F2E9D9;position:relative;overflow:hidden}
.subscribe-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/96dac2c07bca0ac8.jpg') center/cover no-repeat;
  opacity:.12;pointer-events:none;
}
.subscribe-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.subscribe-section .eyebrow{color:#F2E4C9;background:rgba(255,255,255,.12)}
.subscribe-section h2{color:#F8F1E3;font-size:clamp(26px,3.2vw,36px);margin-bottom:12px}
.subscribe-section p{color:rgba(239,230,214,.78);margin-bottom:0;max-width:56ch}
.subscribe-form{grid-template-columns:1fr auto;align-items:start;gap:12px}
.subscribe-form label{grid-column:1/-1}
.subscribe-form input{border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.96)}
.subscribe-form .btn{height:48px;white-space:nowrap}
.subscribe-form .form-note{grid-column:1/-1;color:var(--accent-2)}
.subscribe-form .form-note.is-error{color:#F0B3A0}
/* Return */
.return-section{background:#fff;border-top:1px solid var(--line);padding:24px 0}
.return-inner{display:flex;align-items:center;justify-content:center;gap:12px;font-size:14px;color:var(--muted)}
.return-inner a{color:var(--brand);font-weight:600}
.return-inner a:hover{color:var(--accent)}
/* Footer */
.site-footer{background:var(--ink);color:#EFE6D6;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo-text strong{color:#F7F2E8}
.footer-brand .logo-text small{color:rgba(239,230,214,.72)}
.footer-brand p{color:rgba(239,230,214,.76);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:40ch}
.footer-col h4{font-size:15px;color:#F7F2E8;margin-bottom:14px;font-family:var(--font-serif)}
.footer-col a{display:block;color:rgba(239,230,214,.78);font-size:14px;padding:5px 0}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;
  font-size:13px;color:rgba(239,230,214,.58);
}
.footer-bottom a{color:rgba(239,230,214,.72)}
.footer-bottom a:hover{color:var(--accent-2)}
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:30px}
  .article-aside{order:-1}
  .toc-card{position:static;display:grid;grid-template-columns:200px minmax(0,1fr);gap:18px;align-items:start}
  .toc-title{grid-column:1/-1;margin-bottom:0}
  .toc-nav{grid-column:1/-1;grid-template-columns:repeat(5,minmax(0,1fr));display:grid}
  .toc-nav a{border-left:0;border-bottom:2px solid transparent;text-align:center}
  .toc-nav a:hover{border-left-color:transparent;border-bottom-color:var(--accent)}
  .toc-note{grid-column:1/-1;margin-top:0;padding-top:12px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav{height:70px}
  .nav-links{
    display:none;position:absolute;top:70px;left:20px;right:20px;background:#fff;
    border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);
    padding:10px;flex-direction:column;align-items:stretch;z-index:90;
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-toggle{display:flex}
  .nav-right .search-pill{display:none}
  .nav-right .btn-primary{display:none}
  .article-hero{padding:34px 0 30px}
  .article-hero h1{max-width:100%}
  .keypoints-card{grid-template-columns:1fr;gap:20px;padding:26px}
  .feedback-layout{grid-template-columns:1fr;gap:30px}
  .subscribe-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .section{padding:48px 0}
  .logo-text strong{font-size:15.5px}
  .logo-text small{font-size:10px;max-width:190px;overflow:hidden;text-overflow:ellipsis}
  .article-hero h1{font-size:clamp(26px,8vw,34px)}
  .article-deck{font-size:15.5px}
  .article-meta{gap:8px 12px}
  .article-body{font-size:17px;line-height:1.86}
  .article-body h2{font-size:24px;margin-top:34px}
  .article-body h3{font-size:20px}
  .keypoints-card{padding:22px 20px}
  .toc-nav{grid-template-columns:1fr 1fr}
  .toc-nav a{text-align:left}
  .related-grid{grid-template-columns:1fr}
  .prevnext-grid{grid-template-columns:1fr}
  .author-card{flex-direction:column;padding:24px 22px}
  .feedback-form .btn{width:100%;justify-self:stretch}
  .subscribe-form{grid-template-columns:1fr}
  .subscribe-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1/-1}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .section{padding:42px 0}
  .login,.article-hero{padding-left:0;padding-right:0}
  .crumbs .current{white-space:normal;max-width:100%}
  .article-meta{font-size:12.5px}
  .toc-nav{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .return-inner{flex-wrap:wrap}
}