/* roulang page: index */
:root{
  --ink:#2F5D4A;
  --ink-deep:#254C3C;
  --brown:#4A3A2E;
  --accent:#C0563E;
  --paper:#F7F2E8;
  --sand:#EFE7D8;
  --dark:#1E3B31;
  --line:#E4DAC8;
  --muted:#6E6459;
  --body:#3E362E;
  --r-card:14px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(74,58,46,.06);
  --sh2:0 10px 24px -12px rgba(47,93,74,.28);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.88;color:var(--body);background:var(--paper)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--brown);line-height:1.3;margin:0;font-weight:700}
p{margin:0}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:88px 0;position:relative}
.section-sand{background:var(--sand)}
.section-line{border-top:1px solid var(--line)}
.section-title{font-size:clamp(22px,2.3vw,30px);margin-bottom:14px}
.section-lead{max-width:46rem;color:var(--muted);font-size:15.5px;margin-bottom:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;color:var(--ink);background:rgba(47,93,74,.08);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--accent)}
.divider-branch{display:flex;align-items:center;gap:14px;margin:0 0 34px;color:var(--line)}
.divider-branch::before,.divider-branch::after{content:"";height:1px;flex:1;background:var(--line)}
.divider-branch span{width:8px;height:8px;border:1px solid var(--line);transform:rotate(45deg)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,242,232,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.header-inner{max-width:1200px;margin:0 auto;height:64px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--ink);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--sh1)}
.brand-mark svg{width:22px;height:22px}
.brand-text strong{display:block;font-family:var(--serif);font-size:17px;line-height:1.2;color:var(--brown);letter-spacing:.02em}
.brand-text em{display:block;font-style:normal;font-size:10.5px;letter-spacing:.2em;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-block;padding:9px 13px;font-size:14.5px;color:#584E44;border-radius:999px;white-space:nowrap;transition:background-color .18s ease,color .18s ease}
.nav-links a:hover{background:var(--sand);color:var(--ink)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;background:var(--ink);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{display:flex;align-items:center;gap:8px;background:var(--sand);border:1px solid transparent;border-radius:var(--r-btn);padding:0 12px;height:40px;width:236px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.nav-search:focus-within{border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(47,93,74,.12)}
.nav-search svg{width:15px;height:15px;color:var(--muted);flex-shrink:0}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--body);width:100%;font-family:inherit}
.nav-search input::placeholder{color:#94897c}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--sand);color:var(--ink-deep)}
.btn-light{background:#F7F2E8;color:var(--dark)}
.btn-light:hover{background:#fff;color:var(--dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#F3ECE0;border-color:rgba(243,236,224,.55)}
.btn-outline-light:hover{background:rgba(243,236,224,.14);color:#fff}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brown);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.mobile-drawer{display:none;position:fixed;inset:64px 0 0;background:rgba(247,242,232,.99);z-index:79;padding:24px 20px 40px;overflow-y:auto}
.mobile-drawer.open{display:block}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.mobile-drawer nav a{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:16px;color:var(--brown)}
.mobile-drawer nav a.active{border-color:var(--ink);color:var(--ink)}
.mobile-drawer .drawer-search{display:flex;align-items:center;gap:8px;background:var(--sand);border-radius:var(--r-btn);padding:0 14px;height:46px;margin-bottom:16px}
.mobile-drawer .drawer-search input{border:0;background:transparent;outline:none;font-size:15px;width:100%;font-family:inherit}
.mobile-drawer .btn{width:100%}

/* hero */
.hero{position:relative;padding:76px 0 72px;background-image:linear-gradient(rgba(247,242,232,.95),rgba(247,242,232,.9)),url("/assets/images/69587ef91123dd7a.webp");background-size:cover;background-position:center}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(26px,3vw,40px);line-height:1.32;margin-bottom:16px;letter-spacing:-.01em}
.hero-sub{font-size:17px;color:var(--ink);font-weight:600;margin-bottom:16px}
.hero-desc{font-size:15.5px;color:#574D43;max-width:38rem;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.check-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;border-top:1px dashed var(--line);padding-top:22px}
.check-item{display:flex;align-items:center;gap:9px;font-size:14px;color:#574D43;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;box-shadow:var(--sh1)}
.check-item i{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:rgba(47,93,74,.12);color:var(--ink);font-style:normal;font-size:11px;flex-shrink:0}
.hero-visual{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh1);aspect-ratio:16/11;background:var(--sand)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-seal{position:absolute;right:16px;bottom:16px;width:66px;height:66px;border-radius:9px;background:rgba(192,86,62,.94);color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-family:var(--serif);font-size:13px;letter-spacing:.06em;line-height:1.25;padding:6px}

/* cards & grids */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:rgba(47,93,74,.3)}
.pain-card{padding:24px 24px 22px;display:flex;gap:16px;align-items:flex-start}
.pain-num{font-family:var(--serif);font-size:20px;color:var(--accent);line-height:1.2;flex-shrink:0;width:26px}
.pain-card h3{font-size:16.5px;margin-bottom:8px}
.pain-card p{font-size:14.5px;color:var(--muted)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split h2{font-size:clamp(21px,2.1vw,27px);margin-bottom:16px}
.split p{color:#574D43;font-size:15.5px;margin-bottom:14px}
.layer-stack{display:flex;flex-direction:column;gap:12px}
.layer{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;box-shadow:var(--sh1);display:flex;align-items:center;gap:14px;transition:transform .2s ease,border-color .2s ease}
.layer:hover{transform:translateX(4px);border-color:rgba(47,93,74,.3)}
.layer em{font-style:normal;font-family:var(--serif);color:var(--accent);font-size:15px;flex-shrink:0}
.layer strong{font-size:15px;color:var(--brown);display:block}
.layer span{font-size:13.5px;color:var(--muted)}

/* timeline */
.timeline{position:relative;padding-left:34px;max-width:52rem}
.timeline::before{content:"";position:absolute;left:11px;top:6px;bottom:6px;width:1px;background:rgba(47,93,74,.2)}
.tl-item{position:relative;padding:0 0 30px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-34px;top:3px;width:23px;height:23px;border-radius:50%;background:#fff;border:1px solid var(--ink);color:var(--ink);font-family:var(--serif);font-size:12px;display:flex;align-items:center;justify-content:center}
.tl-item h3{font-size:17px;margin-bottom:7px}
.tl-item p{font-size:14.8px;color:var(--muted);max-width:40rem}

/* platform cards */
.plat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);border-top:3px solid var(--ink);padding:24px 22px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease}
.plat-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.plat-card h3{font-size:17px;margin-bottom:8px}
.plat-card p{font-size:14.3px;color:var(--muted);margin-bottom:14px;min-height:44px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 10px;border-radius:999px;line-height:1.6}
.badge-cat{background:var(--sand);color:var(--ink);border:1px solid rgba(47,93,74,.16)}
.badge-state{background:rgba(192,86,62,.12);color:var(--accent)}

/* download */
.dl-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:rgba(47,93,74,.34);color:inherit}
.dl-icon{width:44px;height:44px;border-radius:12px;background:rgba(47,93,74,.1);display:flex;align-items:center;justify-content:center;color:var(--ink);margin-bottom:16px}
.dl-icon svg{width:22px;height:22px}
.dl-card h3{font-size:17px;margin-bottom:6px}
.dl-file{font-family:"SFMono-Regular",Consolas,monospace;font-size:13px;color:var(--accent);background:rgba(192,86,62,.08);border-radius:6px;padding:3px 8px;display:inline-block;margin-bottom:12px}
.dl-card p{font-size:14.2px;color:var(--muted);min-height:48px}
.dl-cta{margin-top:16px;display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;color:var(--ink)}
.dl-card:hover .dl-cta{color:var(--accent)}

/* stats */
.stats{background:var(--dark);color:#EFE7D8;padding:66px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.stat-item{border-left:1px solid rgba(239,231,216,.18);padding-left:22px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-family:var(--serif);font-size:clamp(30px,3.4vw,44px);color:#fff;line-height:1.1}
.stat-num small{font-size:15px;margin-left:6px;color:#C9BBA6;font-family:var(--sans)}
.stat-item p{font-size:13.8px;color:#C9BBA6;margin-top:8px;line-height:1.7}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-big{grid-column:span 2;display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease}
.scene-big:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.scene-thumb{width:104px;height:80px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--sand);flex-shrink:0}
.scene-thumb img{width:100%;height:100%;object-fit:cover}
.scene-big h3{font-size:16.5px;margin-bottom:6px}
.scene-big p{font-size:14px;color:var(--muted)}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.scene-card h3{font-size:15.5px;margin-bottom:7px}
.scene-card p{font-size:13.8px;color:var(--muted)}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;color:inherit}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:rgba(47,93,74,.3);color:inherit}
.news-card:hover .news-title{color:var(--ink)}
.news-title{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease}
.news-desc{font-size:14.2px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:12.6px;color:#8A7F72;margin-top:auto;padding-top:8px;border-top:1px dashed var(--line)}
.news-more{color:var(--ink);font-weight:600}
.news-empty{background:var(--sand);border:1px dashed var(--line);border-radius:var(--r-card);padding:44px 24px;text-align:center;color:var(--muted);font-size:14.6px}
.news-empty strong{display:block;font-family:var(--serif);font-size:16.5px;color:var(--brown);margin-bottom:8px}

/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.topic{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh1);transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;color:inherit}
.topic:hover{background:var(--sand);transform:translateX(4px);color:inherit}
.topic h3{font-size:16px;margin-bottom:8px}
.topic p{font-size:13.8px;color:var(--muted);margin-bottom:14px}
.topic .arrow{font-size:13.5px;color:var(--ink);font-weight:600}

/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1)}
.faq-item summary{list-style:none;cursor:pointer;position:relative;padding:17px 46px 17px 44px;font-family:var(--serif);font-size:16px;color:var(--brown);line-height:1.55;transition:background-color .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:20px;top:23px;width:10px;height:10px;border-radius:2px;background:var(--accent)}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:19px;color:var(--ink);font-family:var(--sans)}
.faq-item[open] summary{background:var(--sand)}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:2px 24px 20px 44px;font-size:14.8px;color:#574D43;transition:padding .18s ease}

/* safety */
.safety{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.safety-list li{display:flex;gap:14px;padding:15px 0;border-bottom:1px dashed var(--line);font-size:14.8px;color:#574D43}
.safety-list li:last-child{border-bottom:0}
.safety-list b{font-family:var(--serif);color:var(--accent);font-weight:700;flex-shrink:0;width:22px}
.notice-card{background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh1)}
.notice-card h3{font-size:17px;margin-bottom:12px}
.notice-card p{font-size:14.4px;color:#574D43;margin-bottom:10px}
.notice-card p:last-child{margin-bottom:0}

/* cta */
.cta-band{background:var(--dark);color:#EFE7D8;padding:70px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-band p{color:#C9BBA6;font-size:14.8px;max-width:34rem}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-foot{margin-top:22px;font-size:13px;color:#A79880}

/* footer */
.site-footer{background:#F2EADA;border-top:1px solid var(--line);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:22rem}
.footer-col h4{font-size:14.5px;margin-bottom:14px;color:var(--brown)}
.footer-col a,.footer-col span{display:block;font-size:13.8px;color:#5E5449;padding:5px 0}
.footer-col a:hover{color:var(--ink)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.8px;color:#8A7F72}

@media (max-width:1023px){
  .container,.header-inner{padding-left:28px;padding-right:28px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:flex}
  .hero{padding:56px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{aspect-ratio:4/3}
  .split,.safety{grid-template-columns:1fr;gap:30px}
  .grid-4,.stats-grid,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-big{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:767px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .stat-item{border-left:0;padding-left:0}
}
@media (max-width:639px){
  .container,.header-inner{padding-left:20px;padding-right:20px}
  body{font-size:16px}
  .hero h1{font-size:26px}
  .hero-desc{font-size:15px}
  .check-strip{grid-template-columns:1fr}
  .section{padding:48px 0}
  .scene-grid{grid-template-columns:1fr}
  .scene-big{grid-column:span 1;flex-direction:column;align-items:flex-start}
  .scene-thumb{width:100%;height:140px}
  .grid-4,.topic-grid,.news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .faq-item summary{font-size:15px;padding-right:42px}
  .faq-body{padding-left:44px;padding-right:20px}
  .brand-text strong{font-size:15.5px}
  .dl-card p{min-height:0}
}

/* roulang page: article */
:root{
  --ink:#2F5D4A;
  --ink-deep:#254C3C;
  --brown:#4A3A2E;
  --accent:#C0563E;
  --paper:#F7F2E8;
  --sand:#EFE7D8;
  --dark:#1E3B31;
  --line:#E4DAC8;
  --muted:#6E6459;
  --body:#3E362E;
  --r-card:14px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(74,58,46,.06);
  --sh2:0 10px 24px -12px rgba(47,93,74,.28);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.88;color:var(--body);background:var(--paper)}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--accent)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--serif);color:var(--brown);line-height:1.3;margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:88px 0;position:relative}
.section-sand{background:var(--sand)}
.section-line{border-top:1px solid var(--line)}
.section-title{font-size:clamp(22px,2.3vw,30px);margin-bottom:14px}
.section-lead{max-width:46rem;color:var(--muted);font-size:15.5px;margin-bottom:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;color:var(--ink);background:rgba(47,93,74,.08);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--accent)}
.divider-branch{display:flex;align-items:center;gap:14px;margin:0 0 34px;color:var(--line)}
.divider-branch::before,.divider-branch::after{content:"";height:1px;flex:1;background:var(--line)}
.divider-branch span{width:8px;height:8px;border:1px solid var(--line);transform:rotate(45deg)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,242,232,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.header-inner{max-width:1200px;margin:0 auto;height:64px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--ink);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--sh1)}
.brand-mark svg{width:22px;height:22px}
.brand-text strong{display:block;font-family:var(--serif);font-size:17px;line-height:1.2;color:var(--brown);letter-spacing:.02em}
.brand-text em{display:block;font-style:normal;font-size:10.5px;letter-spacing:.2em;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-block;padding:9px 13px;font-size:14.5px;color:#584E44;border-radius:999px;white-space:nowrap;transition:background-color .18s ease,color .18s ease}
.nav-links a:hover{background:var(--sand);color:var(--ink)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;background:var(--ink);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{display:flex;align-items:center;gap:8px;background:var(--sand);border:1px solid transparent;border-radius:var(--r-btn);padding:0 12px;height:40px;width:236px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.nav-search:focus-within{border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(47,93,74,.12)}
.nav-search svg{width:15px;height:15px;color:var(--muted);flex-shrink:0}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--body);width:100%;font-family:inherit}
.nav-search input::placeholder{color:#94897c}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--sand);color:var(--ink-deep)}
.btn-light{background:#F7F2E8;color:var(--dark)}
.btn-light:hover{background:#fff;color:var(--dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#F3ECE0;border-color:rgba(243,236,224,.55)}
.btn-outline-light:hover{background:rgba(243,236,224,.14);color:#fff}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brown);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.mobile-drawer{display:none;position:fixed;inset:64px 0 0;background:rgba(247,242,232,.99);z-index:79;padding:24px 20px 40px;overflow-y:auto}
.mobile-drawer.open{display:block}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.mobile-drawer nav a{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:16px;color:var(--brown)}
.mobile-drawer nav a.active{border-color:var(--ink);color:var(--ink)}
.mobile-drawer .drawer-search{display:flex;align-items:center;gap:8px;background:var(--sand);border-radius:var(--r-btn);padding:0 14px;height:46px;margin-bottom:16px}
.mobile-drawer .drawer-search input{border:0;background:transparent;outline:none;font-size:15px;width:100%;font-family:inherit}
.mobile-drawer .btn{width:100%}

/* article head */
.article-head{padding:46px 0 36px;background:var(--paper);border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{color:#C4B9A6}
.crumbs .current{color:var(--brown)}
.article-head-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:32px}
.article-head-main{min-width:0;max-width:54rem}
.article-head h1{font-size:clamp(24px,2.7vw,35px);line-height:1.36;margin:14px 0 18px;letter-spacing:-.01em;word-break:break-word}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:7px 12px;border-radius:999px;background:var(--sand);color:var(--ink);border:1px solid rgba(47,93,74,.16)}
.badge-accent{background:rgba(192,86,62,.12);color:var(--accent);border-color:rgba(192,86,62,.22)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC4B0}
.article-actions{display:flex;gap:10px;flex-shrink:0;padding-top:6px}
.share-btn{display:inline-flex;align-items:center;gap:7px;min-height:42px;padding:0 16px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--brown);font-size:13.5px;transition:border-color .18s ease,color .18s ease,background-color .18s ease,transform .18s ease}
.share-btn:hover{border-color:rgba(47,93,74,.4);color:var(--ink);background:var(--sand);transform:translateY(-1px)}
.share-btn svg{width:15px;height:15px}

/* key points */
.keypoints{background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 30px 20px;margin-bottom:34px}
.keypoints h2{font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.keypoints h2::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px}
.keypoints ol{margin:0;padding:0;list-style:none;counter-reset:kp}
.keypoints li{counter-increment:kp;position:relative;padding-left:28px;font-size:14.5px;line-height:1.8;color:#544A40;margin-bottom:10px}
.keypoints li:last-child{margin-bottom:0}
.keypoints li::before{content:counter(kp);position:absolute;left:0;top:3px;width:19px;height:19px;border-radius:5px;background:rgba(192,86,62,.13);color:var(--accent);font-size:11px;line-height:19px;text-align:center;font-weight:600}

/* article body */
.article-shell{max-width:46rem;margin:0 auto;width:100%}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:44px 48px}
.article-content{font-size:16.5px;line-height:1.92;color:var(--body);word-break:break-word}
.article-content > *:first-child{margin-top:0}
.article-content h2{font-size:22px;margin:38px 0 14px;padding-left:14px;border-left:3px solid var(--ink);line-height:1.5}
.article-content h3{font-size:18px;margin:28px 0 10px;color:var(--brown)}
.article-content h4{font-size:16px;margin:22px 0 8px;color:var(--brown)}
.article-content p{margin:0 0 1.1em}
.article-content ul,.article-content ol{padding-left:1.4em;margin:0 0 1.1em}
.article-content li{margin-bottom:.45em}
.article-content blockquote{margin:1.4em 0;padding:14px 20px;background:var(--sand);border-left:3px solid var(--ink);border-radius:0 10px 10px 0;color:#544A40}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:10px;border:1px solid var(--line);margin:1.2em 0}
.article-content a{color:var(--ink);text-decoration:underline;text-decoration-color:rgba(47,93,74,.35);text-underline-offset:3px}
.article-content a:hover{color:var(--accent);text-decoration-color:rgba(192,86,62,.5)}
.article-content table{width:100%;border-collapse:collapse;font-size:14.5px;margin:1.3em 0;border-radius:10px;overflow:hidden}
.article-content thead th{background:var(--sand);color:var(--brown);text-align:left;padding:11px 14px;border:0;font-weight:600}
.article-content tbody td{padding:11px 14px;border:0}
.article-content tbody tr:nth-child(even){background:rgba(239,231,216,.45)}
.article-content code{background:var(--sand);padding:2px 6px;border-radius:5px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.article-content pre{background:var(--sand);padding:16px 18px;border-radius:10px;overflow-x:auto;margin:1.2em 0}
.article-content pre code{background:none;padding:0}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-empty{text-align:center;padding:36px 10px 14px}
.article-empty h2{font-size:22px;margin-bottom:12px;border:0;padding:0}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:24px}

/* download block */
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--ink);border-radius:var(--r-card);padding:26px 24px 24px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:rgba(47,93,74,.24);border-top-color:var(--ink-deep)}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card .dl-note{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 14px;flex:1}
.dl-card .file{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:var(--brown);background:var(--sand);border-radius:6px;padding:3px 9px;margin-bottom:16px}
.dl-card .btn{width:100%}

/* steps */
.steps{position:relative;padding-left:4px;max-width:52rem}
.step{position:relative;padding-left:46px;padding-bottom:28px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:14px;top:30px;bottom:0;width:1px;background:rgba(47,93,74,.2)}
.step:last-child::before{display:none}
.step-num{position:absolute;left:0;top:0;width:29px;height:29px;border-radius:50%;background:var(--ink);color:#fff;font-size:13px;line-height:29px;text-align:center;font-family:var(--serif)}
.step h3{font-size:16.5px;margin-bottom:6px;color:var(--brown)}
.step p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.85}

/* compare table */
.compare-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden}
table.compare{width:100%;border-collapse:collapse;font-size:14.5px}
table.compare th{background:var(--sand);color:var(--brown);text-align:left;padding:14px 20px;font-weight:600;font-size:13.5px;letter-spacing:.02em}
table.compare td{padding:14px 20px;color:#4B4238;vertical-align:top}
table.compare tbody tr:nth-child(even){background:rgba(239,231,216,.42)}
table.compare tbody tr{border-top:1px solid var(--line)}
table.compare .mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--ink)}

/* faq */
.faq-list{max-width:52rem}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item[open]{border-color:rgba(47,93,74,.35);box-shadow:var(--sh1)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--brown);display:flex;align-items:center;gap:11px;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px;flex-shrink:0}
.faq-item summary::after{content:"+";margin-left:auto;color:var(--muted);font-size:18px;font-weight:400;line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-a{padding:0 22px 20px 41px;font-size:14.5px;color:var(--muted);line-height:1.9}
.faq-item .faq-a p{margin:0 0 .6em}
.faq-item .faq-a p:last-child{margin-bottom:0}

/* cta */
.cta-band{background:var(--dark);color:#EFE7D8;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{color:#F7F2E8;font-size:clamp(21px,2.2vw,27px);margin-bottom:10px}
.cta-inner p{margin:0;color:#B9B2A2;font-size:14.5px;max-width:34rem}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* footer */
.site-footer{background:var(--dark);color:#DCD6C8;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:0}
.footer-brand .brand-mark{background:rgba(247,242,232,.14);color:#F7F2E8;box-shadow:none}
.footer-brand .brand-text strong{color:#F7F2E8}
.footer-brand .brand-text em{color:#A9A292}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#B6AF9F;margin:16px 0 0;max-width:25rem}
.footer-col h4{font-size:14px;color:#F1EADA;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;font-size:13.5px;color:#B6AF9F;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#F7F2E8}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:42px;padding-top:20px;border-top:1px solid rgba(247,242,232,.14);font-size:12.5px;color:#9C9585}

@media (max-width:1023px){
  .container,.header-inner{padding-left:28px;padding-right:28px}
  .section{padding:64px 0}
  .nav-search{width:190px}
  .nav-links a{padding:9px 10px;font-size:14px}
  .article-card{padding:34px 30px}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-search{display:none}
  .article-head-inner{flex-direction:column;gap:18px}
  .article-actions{padding-top:0}
  .download-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container,.header-inner{padding-left:20px;padding-right:20px}
  .section{padding:48px 0}
  .article-head{padding:32px 0 26px}
  .article-card{padding:26px 20px}
  .keypoints{padding:22px 20px 16px}
  .article-content{font-size:16px}
  .article-content h2{font-size:19.5px;margin-top:30px}
  .article-content h3{font-size:17px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:9.5px;letter-spacing:.16em}
  .article-head h1{font-size:23px}
  .article-actions{flex-wrap:wrap}
  .share-btn{flex:1;justify-content:center}
  .cta-actions .btn{width:100%}
  table.compare th,table.compare td{padding:11px 13px}
  table.compare{font-size:13.5px}
}

/* roulang page: category1 */
:root{
  --ink:#2F5D4A;
  --ink-deep:#254C3C;
  --brown:#4A3A2E;
  --accent:#C0563E;
  --paper:#F7F2E8;
  --sand:#EFE7D8;
  --dark:#1E3B31;
  --line:#E4DAC8;
  --muted:#6E6459;
  --body:#3E362E;
  --r-card:14px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(74,58,46,.06);
  --sh2:0 10px 24px -12px rgba(47,93,74,.28);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.88;color:var(--body);background:var(--paper)}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--accent)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--brown);line-height:1.32;font-weight:700}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{margin-bottom:.45em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:88px 0;position:relative}
.section-sand{background:var(--sand)}
.section-line{border-top:1px solid var(--line)}
.section-head{max-width:48rem;margin-bottom:36px}
.section-title{font-size:clamp(22px,2.3vw,30px);margin-bottom:14px}
.section-lead{color:var(--muted);font-size:15.5px;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;color:var(--ink);background:rgba(47,93,74,.08);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--accent)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,242,232,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.header-inner{max-width:1200px;margin:0 auto;height:64px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--ink);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--sh1);flex-shrink:0}
.brand-mark svg{width:22px;height:22px}
.brand-text strong{display:block;font-family:var(--serif);font-size:17px;line-height:1.2;color:var(--brown);letter-spacing:.02em}
.brand-text em{display:block;font-style:normal;font-size:10.5px;letter-spacing:.2em;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-block;padding:9px 13px;font-size:14.5px;color:#584E44;border-radius:999px;white-space:nowrap;transition:background-color .18s ease,color .18s ease}
.nav-links a:hover{background:var(--sand);color:var(--ink)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;background:var(--ink);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{display:flex;align-items:center;gap:8px;background:var(--sand);border:1px solid transparent;border-radius:var(--r-btn);padding:0 12px;height:40px;width:236px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.nav-search:focus-within{border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(47,93,74,.12)}
.nav-search svg{width:15px;height:15px;color:var(--muted);flex-shrink:0}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--body);width:100%;font-family:inherit}
.nav-search input::placeholder{color:#94897c}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;text-align:center}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--sand);color:var(--ink-deep)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brown);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.mobile-drawer{display:none;position:fixed;inset:64px 0 0;background:rgba(247,242,232,.99);z-index:79;padding:24px 20px 40px;overflow-y:auto}
.mobile-drawer.open{display:block}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.mobile-drawer nav a{padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:16px;color:var(--brown)}
.mobile-drawer nav a.active{border-color:var(--ink);color:var(--ink)}
.mobile-drawer .drawer-search{display:flex;align-items:center;gap:8px;background:var(--sand);border-radius:var(--r-btn);padding:0 14px;height:46px;margin-bottom:16px}
.mobile-drawer .drawer-search input{border:0;background:transparent;outline:none;font-size:15px;width:100%;font-family:inherit}
.mobile-drawer .btn{width:100%}

/* category head */
.cat-head{background:var(--sand);border-bottom:1px solid var(--line);padding:48px 0 44px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb span.sep{color:#b9ada0}
.crumb strong{color:var(--ink);font-weight:600}
.cat-head-grid{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end}
.cat-head h1{font-size:clamp(24px,2.7vw,34px);line-height:1.34;margin-bottom:14px;letter-spacing:-.01em}
.cat-intro{max-width:46rem;color:var(--body);font-size:15.8px;margin:0}
.cat-badge{display:inline-flex;flex-direction:column;align-items:center;gap:2px;padding:12px 20px;border:1px solid rgba(47,93,74,.3);border-radius:var(--r-card);background:rgba(255,255,255,.65);white-space:nowrap}
.cat-badge b{font-family:var(--serif);font-size:15px;color:var(--ink);letter-spacing:.04em}
.cat-badge small{font-size:11.5px;color:var(--muted);letter-spacing:.12em}

/* pills */
.pill-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pill{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:999px;padding:14px 22px;box-shadow:var(--sh1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.pill:hover{border-color:rgba(47,93,74,.35);box-shadow:var(--sh2);transform:translateY(-2px)}
.pill i{flex-shrink:0;width:22px;height:22px;border-radius:6px;background:rgba(192,86,62,.12);color:var(--accent);font-style:normal;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:4px}
.pill p{margin:0;font-size:14.6px;line-height:1.7}
.pill p b{color:var(--brown)}

/* filter bar */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding:14px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);margin-bottom:28px}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px}
.filter-tabs span{font-size:13.5px;padding:7px 16px;border-radius:999px;color:var(--muted);background:var(--paper);border:1px solid transparent;transition:background-color .18s ease,color .18s ease}
.filter-tabs span.on{background:var(--ink);color:#fff}
.filter-note{font-size:13px;color:var(--muted)}

/* post list */
.post-list{display:flex;flex-direction:column;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden}
.post-item{display:grid;grid-template-columns:88px 1fr;gap:20px;padding:24px 26px;border-bottom:1px dashed var(--line);transition:background-color .2s ease}
.post-item:last-child{border-bottom:0}
.post-item:hover{background:#FBF7EF}
.post-index{font-family:var(--serif);font-size:26px;line-height:1;color:rgba(47,93,74,.35);letter-spacing:.04em;padding-top:4px}
.post-item:hover .post-index{color:var(--accent)}
.post-body h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.post-body h3 a{color:var(--brown)}
.post-body h3 a:hover{color:var(--ink)}
.post-summary{font-size:14.6px;color:var(--muted);line-height:1.8;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}
.badge{display:inline-block;font-size:12px;line-height:1.6;padding:3px 10px;border-radius:999px;background:var(--sand);color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.badge-accent{color:var(--accent);background:rgba(192,86,62,.12)}
.empty-state{background:var(--sand);border:1px dashed var(--line);border-radius:var(--r-card);padding:44px 24px;text-align:center;color:var(--muted);font-size:14.5px}
.list-foot{display:flex;justify-content:center;margin-top:28px}

/* featured */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{display:grid;grid-template-columns:200px 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.feature-card:hover{transform:translateY(-2px);border-color:rgba(47,93,74,.35);box-shadow:var(--sh2)}
.feature-thumb{position:relative;background:var(--sand);border-right:1px solid var(--line);min-height:200px}
.feature-thumb img{width:100%;height:100%;object-fit:cover}
.feature-body{padding:24px 24px 22px}
.feature-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;color:var(--brown)}
.feature-body p{font-size:14.5px;color:var(--muted);line-height:1.82;margin:0 0 14px}
.feature-link{font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.feature-link:hover{color:var(--accent)}
.feature-link::after{content:"→";font-size:14px;transition:transform .18s ease}
.feature-link:hover::after{transform:translateX(3px)}

/* tips */
.tips-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.tips-grid h2{font-size:clamp(21px,2.1vw,28px);line-height:1.4;margin-bottom:14px}
.tips-grid .tips-note{color:var(--muted);font-size:15px;margin:0}
.tips-list{list-style:none;margin:0;padding:0;counter-reset:tip}
.tips-list li{position:relative;padding:0 0 20px 46px;margin:0 0 20px;border-bottom:1px dashed var(--line);font-size:15.2px;line-height:1.82}
.tips-list li:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.tips-list li::before{counter-increment:tip;content:counter(tip,chinese-informal);position:absolute;left:0;top:2px;width:30px;height:30px;border-radius:9px;background:rgba(47,93,74,.1);color:var(--ink);font-family:var(--serif);font-size:14px;display:flex;align-items:center;justify-content:center}
.tips-list b{color:var(--brown);display:block;font-size:15.5px;margin-bottom:2px}

/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:26px 24px;display:flex;flex-direction:column;border-top:3px solid var(--ink);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.dl-card h3{font-size:18px;margin-bottom:6px}
.dl-file{font-size:12.5px;letter-spacing:.06em;color:var(--accent);background:rgba(192,86,62,.1);border-radius:999px;padding:3px 10px;display:inline-block;margin-bottom:14px;align-self:flex-start}
.dl-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0 0 22px;flex:1}

/* faq */
.faq-list{max-width:52rem;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease}
.faq-item.open{border-color:rgba(47,93,74,.4)}
.faq-q{width:100%;display:flex;align-items:flex-start;gap:12px;text-align:left;background:transparent;border:0;padding:20px 22px;font-size:15.8px;font-weight:600;color:var(--brown);line-height:1.6}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-q .mark{flex-shrink:0;width:10px;height:10px;background:var(--accent);border-radius:2px;margin-top:9px}
.faq-q .arrow{margin-left:auto;flex-shrink:0;color:var(--muted);font-size:13px;transform:rotate(0deg);transition:transform .18s ease}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .18s ease}
.faq-a p{margin:0;padding:0 22px 22px 44px;font-size:14.8px;color:var(--muted);line-height:1.85}

/* closing strip */
.closing{background:var(--sand);border-top:1px solid var(--line)}
.closing-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding:44px 0}
.closing h2{font-size:clamp(19px,2vw,24px);margin-bottom:6px}
.closing p{margin:0;font-size:14.5px;color:var(--muted)}
.closing-links{display:flex;flex-wrap:wrap;gap:12px}

/* footer */
.site-footer{background:var(--sand);border-top:1px solid var(--line);padding:64px 0 0;color:var(--body)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;margin:0;max-width:26rem}
.footer-col h4{font-size:14.5px;color:var(--brown);margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;font-size:14px;color:var(--muted);padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-col a:hover{color:var(--ink);transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding:20px 0 26px;font-size:13px;color:var(--muted)}

@media (max-width:1023px){
  .container{padding:0 28px}
  .header-inner{padding:0 28px}
  .nav-search{display:none}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .cat-head-grid{grid-template-columns:1fr;align-items:start;gap:20px}
  .pill-row{grid-template-columns:1fr}
  .pill{border-radius:var(--r-card)}
  .feature-grid{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr;gap:28px}
  .dl-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{padding:0 20px;gap:12px}
  .section{padding:48px 0}
  .cat-head{padding:32px 0 34px}
  .cat-head h1{font-size:23px}
  .post-item{grid-template-columns:1fr;gap:8px;padding:20px}
  .post-index{font-size:18px;padding-top:0}
  .feature-card{grid-template-columns:1fr}
  .feature-thumb{min-height:150px;border-right:0;border-bottom:1px solid var(--line);aspect-ratio:16/9}
  .dl-grid{grid-template-columns:1fr}
  .filter-bar{padding:12px 14px}
  .closing-inner{padding:34px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:30px}
  .closing-links .btn{width:100%}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:10px;letter-spacing:.14em}
  .faq-q{font-size:15px;padding:16px}
  .faq-a p{padding:0 16px 18px 38px}
  .post-body h3{font-size:16.5px}
  .btn{width:100%}
  .nav-right .btn-sm{display:none}
}