/* roulang page: index */
:root{
  --ink:#14513F;
  --ink-deep:#0E3B2F;
  --amber:#F2A63B;
  --amber-deep:#D98B21;
  --amber-soft:#FDF0DA;
  --mint:#E7EFEA;
  --bg:#F6F4EF;
  --bg-alt:#EDEAE1;
  --white:#FFFFFF;
  --text:#1B1F1D;
  --muted:#5C635E;
  --line:#DCD7CB;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:18px;
  --shadow:0 2px 8px rgba(20,60,48,.06);
  --shadow-hover:0 10px 24px rgba(20,60,48,.13);
  --shadow-lg:0 18px 40px rgba(20,60,48,.16);
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--amber-deep);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section--white{background:var(--white);}
.section--alt{background:var(--bg-alt);}
.section--tint{background:linear-gradient(180deg,#F6F4EF 0%,#EDEAE1 100%);}
.section-head{margin-bottom:34px;max-width:760px;}
.section-head h2{
  font-size:28px;
  line-height:1.4;
  font-weight:700;
  color:var(--ink);
  letter-spacing:0;
}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--ink);
  background:var(--mint);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;
  padding:12px 22px;
  font-size:15px;font-weight:700;
  line-height:1.2;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 4px 12px rgba(20,81,63,.18);}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(20,81,63,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--mint);color:var(--ink-deep);transform:translateY(-2px);}
.btn-amber{background:var(--amber);color:#3A2606;box-shadow:0 4px 12px rgba(242,166,59,.28);}
.btn-amber:hover{background:var(--amber-deep);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;
  background:var(--mint);color:var(--ink);
  border-radius:999px;
  padding:3px 12px;
  font-size:12px;font-weight:700;
  line-height:1.7;
}
.badge-amber{background:var(--amber-soft);color:#8A5A05;}
.tag{
  display:inline-flex;align-items:center;
  background:#F1EEE6;color:var(--muted);
  border:1px solid var(--line);
  border-radius:999px;
  padding:3px 11px;
  font-size:12px;font-weight:600;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.97);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;
  border-radius:10px;
  font-weight:700;font-size:17px;
  box-shadow:0 4px 10px rgba(20,81,63,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap;}
.main-nav a{
  position:relative;
  padding:8px 13px;
  font-size:14.5px;font-weight:600;color:#3B443F;
  border-radius:8px;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.main-nav a:hover{background:var(--mint);color:var(--ink);}
.main-nav a.active{color:var(--ink);background:var(--mint);}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--amber);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.search-link{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:var(--white);
  color:var(--ink);
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.search-link:hover{background:var(--mint);border-color:var(--ink);color:var(--ink-deep);}
.search-link svg{width:17px;height:17px;}
.nav-toggle{
  display:none;
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:var(--white);
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;content:"";
  position:relative;transition:transform .2s var(--ease);
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(900px 460px at 88% -10%, rgba(231,239,234,.95) 0%, rgba(231,239,234,0) 70%),
    linear-gradient(160deg,#F8F6F1 0%,#EDEAE1 100%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute;right:-140px;top:-90px;
  width:440px;height:440px;border-radius:50%;
  background:rgba(20,81,63,.06);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.06fr .94fr;
  gap:52px;
  align-items:center;
  padding:72px 0 76px;
}
.hero h1{
  font-size:42px;
  line-height:1.28;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.5px;
  margin:16px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--amber-deep);}
.hero-sub{
  font-size:16.5px;line-height:1.9;color:#414A45;
  max-width:560px;
}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;font-weight:600;color:#3B443F;
}
.hero-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink);}
.hero-search{
  display:flex;align-items:center;gap:10px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:14px;
  padding:8px 8px 8px 16px;
  margin-top:28px;
  max-width:520px;
  box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.hero-search:focus-within{border-color:var(--ink);box-shadow:0 8px 22px rgba(20,81,63,.14);}
.hero-search svg{width:18px;height:18px;color:var(--muted);flex:0 0 18px;}
.hero-search input{
  flex:1;min-width:0;height:44px;border:none;outline:none;background:transparent;
  font-size:15px;color:var(--text);
}
.hero-search input::placeholder{color:#9AA29C;}
.hero-search button{flex:0 0 auto;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted);}

.hero-visual{position:relative;min-height:392px;}
.hero-visual .hero-shot{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--shadow-lg);
  aspect-ratio:16/11;
  background:var(--mint);
}
.hero-visual .hero-shot img{width:100%;height:100%;object-fit:cover;}
.hero-stack{
  position:absolute;left:-14px;bottom:-18px;
  width:min(300px,86%);
  background:var(--white);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-lg);
  padding:14px 16px;
  display:flex;gap:12px;align-items:center;
}
.hero-stack + .hero-stack{left:auto;right:-10px;bottom:auto;top:-20px;width:min(258px,80%);}
.hero-stack .mini-icon{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  background:var(--mint);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;
}
.hero-stack strong{display:block;font-size:14px;color:var(--ink);line-height:1.4;}
.hero-stack span{display:block;font-size:12px;color:var(--muted);line-height:1.5;}

/* ---------- quick search bar ---------- */
.quickbar{background:var(--white);border-bottom:1px solid var(--line);padding:18px 0;}
.quickbar-inner{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.quickbar-label{font-size:13px;font-weight:700;color:var(--muted);flex:0 0 auto;}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;}
.chip{
  display:inline-flex;align-items:center;
  border:1px solid var(--line);
  background:#FBF9F5;
  color:#3B443F;
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;font-weight:600;
  transition:all .2s var(--ease);
}
.chip:hover{background:var(--mint);border-color:var(--ink);color:var(--ink-deep);transform:translateY(-1px);}

/* ---------- software cards ---------- */
.soft-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.soft-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.soft-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.32);}
.soft-top{display:flex;align-items:center;gap:12px;}
.soft-icon{
  width:44px;height:44px;flex:0 0 44px;
  border-radius:12px;
  background:var(--mint);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.soft-top h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.4;}
.soft-top small{display:block;font-size:12px;color:var(--muted);font-weight:400;}
.soft-card p{font-size:14px;color:var(--muted);line-height:1.75;}
.soft-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;}

/* ---------- category matrix ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.cat-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px 18px 16px;
  display:flex;align-items:flex-start;gap:12px;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);background:#FCFDFB;}
.cat-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:#F1EEE6;color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.cat-card h3{font-size:15px;font-weight:700;color:var(--ink);line-height:1.5;}
.cat-card span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px;}

/* ---------- cms post list ---------- */
.post-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.post-row{
  display:flex;gap:16px;align-items:flex-start;justify-content:space-between;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 22px;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);}
.post-row-main{min-width:0;}
.post-row-main h3{
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-row-main p{
  margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-row-meta{
  flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-end;gap:8px;
  padding-left:6px;
}
.post-row-meta time{font-size:12px;color:#8C948E;white-space:nowrap;}
.empty-state{
  background:var(--white);
  border:1px dashed var(--line);
  border-radius:var(--radius);
  padding:38px 22px;
  text-align:center;
  color:var(--muted);
  font-size:15px;
}
.section-foot{margin-top:28px;display:flex;justify-content:center;}

/* ---------- scenario wide cards ---------- */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.scene-card{
  position:relative;overflow:hidden;
  display:flex;align-items:stretch;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  min-height:158px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.32);}
.scene-body{flex:1;padding:22px 22px;display:flex;flex-direction:column;gap:8px;min-width:0;}
.scene-body h3{font-size:18px;font-weight:700;color:var(--ink);}
.scene-body p{font-size:14px;color:var(--muted);line-height:1.75;}
.scene-media{flex:0 0 38%;position:relative;background:var(--mint);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-more{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px;}
.scene-card:hover .scene-more{color:var(--amber-deep);}

/* ---------- ranking ---------- */
.rank-list{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.rank-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.rank-item:last-child{border-bottom:none;}
.rank-item:hover{background:#FBFAF6;}
.rank-no{
  flex:0 0 54px;
  font-size:26px;font-weight:700;color:var(--amber);line-height:1.2;
  font-variant-numeric:tabular-nums;
  letter-spacing:-1px;
}
.rank-body h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;}
.rank-body p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- tutorial cards ---------- */
.tuto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.tuto-card{
  display:flex;flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tuto-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.32);}
.tuto-media{position:relative;aspect-ratio:4/3;background:var(--mint);overflow:hidden;}
.tuto-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.tuto-card:hover .tuto-media img{transform:scale(1.04);}
.tuto-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tuto-body h3{font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.55;}
.tuto-body p{font-size:14px;color:var(--muted);line-height:1.75;}
.tuto-body .tag{align-self:flex-start;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:26px;}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--ink) 0%,rgba(20,81,63,.14) 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 26px 8px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;
  width:14px;height:14px;border-radius:50%;
  background:var(--white);border:3px solid var(--ink);
  box-sizing:border-box;
}
.tl-date{font-size:12.5px;font-weight:700;color:var(--amber-deep);letter-spacing:.4px;}
.tl-item h3{font-size:16px;font-weight:700;color:var(--ink);margin-top:4px;line-height:1.55;}
.tl-item p{font-size:14px;color:var(--muted);margin-top:4px;line-height:1.75;}

/* ---------- security block ---------- */
.security-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start;
}
.security-wrap p{font-size:15px;color:#414A45;line-height:1.9;}
.security-wrap p + p{margin-top:14px;}
.check-list{display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:10px;
  padding:14px 16px;
  font-size:14.5px;color:#3B443F;line-height:1.7;
  box-shadow:var(--shadow);
}
.check-list li::before{
  content:"✓";
  flex:0 0 22px;height:22px;
  display:flex;align-items:center;justify-content:center;
  background:var(--mint);color:var(--ink);
  border-radius:50%;font-size:12px;font-weight:700;
  margin-top:2px;
}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  background:var(--ink);
  border-radius:var(--radius-lg);
  padding:38px 30px;
  box-shadow:var(--shadow-lg);
}
.stat{text-align:center;color:#fff;}
.stat strong{
  display:block;font-size:36px;font-weight:700;line-height:1.2;
  color:#fff;letter-spacing:-1px;font-variant-numeric:tabular-nums;
}
.stat strong em{font-style:normal;font-size:17px;color:var(--amber);margin-left:3px;}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.6;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{background:#FBF9F4;border-color:rgba(20,81,63,.3);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;
  padding:16px 22px;
  font-size:16px;font-weight:700;color:var(--ink);
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink-deep);}
.faq-item summary::after{
  content:"+";
  flex:0 0 26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--mint);color:var(--ink);
  font-size:17px;font-weight:700;line-height:1;
  transition:transform .25s var(--ease),background-color .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--amber);color:#3A2606;transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.85;}

/* ---------- subscribe cta ---------- */
.subscribe{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:36px 34px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.subscribe-text{max-width:560px;}
.subscribe-text h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.45;}
.subscribe-text p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.subscribe-form{display:flex;gap:10px;flex-wrap:wrap;flex:1 1 380px;max-width:460px;}
.subscribe-form input[type="email"]{
  flex:1 1 200px;min-width:0;
  height:46px;
  border:1px solid var(--line);
  border-radius:10px;
  padding:0 14px;
  font-size:15px;color:var(--text);
  background:var(--white);
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-form input[type="email"]::placeholder{color:#9AA29C;}
.subscribe-form input[type="email"]:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(20,81,63,.1);}
.subscribe-form .btn{height:46px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.78);padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:24px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand .brand-text strong{color:#fff;font-size:16px;}
.footer-brand .brand-text small{color:rgba(255,255,255,.5);}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.3px;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.7);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--amber);}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.7);line-height:1.8;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--amber);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .soft-grid{grid-template-columns:repeat(2,1fr);}
  .cat-grid{grid-template-columns:repeat(3,1fr);}
  .post-list{grid-template-columns:1fr;}
}
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 64px;}
  .hero-visual{min-height:340px;max-width:560px;}
  .tuto-grid{grid-template-columns:1fr 1fr;}
  .security-wrap{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .stats{padding:32px 22px;}
  .stat strong{font-size:30px;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:68px;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:var(--white);
    border-bottom:1px solid var(--line);
    box-shadow:0 14px 26px rgba(20,60,48,.12);
    padding:12px 20px 18px;
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:11px 12px;font-size:15px;border-radius:8px;}
  .main-nav a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm{display:none;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .section{padding:44px 0;}
  .container{padding:0 16px;}
  .hero-inner{padding:44px 0 52px;}
  .hero h1{font-size:30px;line-height:1.35;}
  .hero-sub{font-size:15px;}
  .hero-search{max-width:100%;}
  .hero-visual{min-height:280px;}
  .hero-stack{width:min(268px,86%);padding:12px 14px;}
  .hero-stack + .hero-stack{width:min(228px,78%);}
  .section-head h2{font-size:23px;}
  .soft-grid{grid-template-columns:1fr;}
  .tuto-grid{grid-template-columns:1fr;}
  .post-row{flex-direction:column;gap:12px;}
  .post-row-meta{flex-direction:row;align-items:center;justify-content:flex-start;padding-left:0;}
  .stats{grid-template-columns:1fr;gap:18px;}
  .stat{text-align:left;padding-left:8px;}
  .rank-item{gap:14px;padding:18px;}
  .rank-no{flex:0 0 40px;font-size:22px;}
  .subscribe{padding:26px 20px;gap:20px;}
  .subscribe-text h2{font-size:21px;}
  .subscribe-form{max-width:100%;flex-basis:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .scene-media{flex:0 0 34%;}
}
@media (max-width:520px){
  .hero h1{font-size:26px;}
  .hero-cta .btn{width:100%;}
  .hero-points span{font-size:12.5px;padding:5px 11px;}
  .cat-grid{grid-template-columns:1fr;}
  .brand-text small{display:none;}
  .scene-card{flex-direction:column;}
  .scene-media{flex:0 0 auto;aspect-ratio:16/9;}
  .faq-item summary{font-size:15px;padding:14px 16px;}
  .faq-body{padding:0 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink:#14513F;
  --ink-deep:#0E3B2F;
  --amber:#F2A63B;
  --amber-deep:#D98B21;
  --amber-soft:#FDF0DA;
  --mint:#E7EFEA;
  --bg:#F6F4EF;
  --bg-alt:#EDEAE1;
  --white:#FFFFFF;
  --text:#1B1F1D;
  --muted:#5C635E;
  --line:#DCD7CB;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:18px;
  --shadow:0 2px 8px rgba(20,60,48,.06);
  --shadow-hover:0 10px 24px rgba(20,60,48,.13);
  --shadow-lg:0 18px 40px rgba(20,60,48,.16);
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;font-weight:400;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--amber-deep);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section--white{background:var(--white);}
.section--alt{background:var(--bg-alt);}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--ink);}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--ink);
  background:var(--mint);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);}
/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:12px 22px;font-size:15px;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 4px 12px rgba(20,81,63,.18);}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(20,81,63,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--mint);color:var(--ink-deep);transform:translateY(-2px);}
.btn-amber{background:var(--amber);color:#3A2606;box-shadow:0 4px 12px rgba(242,166,59,.28);}
.btn-amber:hover{background:var(--amber-deep);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:focus-visible,.main-nav a:focus-visible,.search-link:focus-visible,.nav-toggle:focus-visible,.footer-col a:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
/* ===== badges & tags ===== */
.badge{display:inline-flex;align-items:center;background:var(--mint);color:var(--ink);border-radius:999px;padding:3px 12px;font-size:12px;font-weight:700;line-height:1.7;}
.badge-amber{background:var(--amber-soft);color:#8A5A05;}
.tag{display:inline-flex;align-items:center;background:#F1EEE6;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.tag:hover{background:var(--mint);color:var(--ink);border-color:rgba(20,81,63,.35);}
/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.97);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line);}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;border-radius:10px;font-weight:700;font-size:17px;
  box-shadow:0 4px 10px rgba(20,81,63,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap;}
.main-nav a{position:relative;padding:8px 13px;font-size:14.5px;font-weight:600;color:#3B443F;border-radius:8px;transition:background-color .2s var(--ease),color .2s var(--ease);}
.main-nav a:hover{background:var(--mint);color:var(--ink);}
.main-nav a.active{color:var(--ink);background:var(--mint);}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;background:var(--amber);border-radius:2px;}
.header-actions{display:flex;align-items:center;gap:10px;}
.search-link{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--white);color:var(--ink);
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.search-link:hover{background:var(--mint);border-color:var(--ink);color:var(--ink-deep);}
.search-link svg{width:17px;height:17px;}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--white);align-items:center;justify-content:center;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;content:"";position:relative;transition:transform .2s var(--ease);}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}
/* ===== breadcrumb ===== */
.article-breadcrumb{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:13px 0;font-size:13.5px;color:var(--muted);}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.breadcrumb-list li{display:flex;align-items:center;gap:8px;}
.breadcrumb-list li+li::before{content:"/";color:#B0AB9D;}
.breadcrumb-list a{color:var(--muted);}
.breadcrumb-list a:hover{color:var(--ink);}
.breadcrumb-list .current{color:var(--ink);font-weight:600;}
/* ===== article head ===== */
.article-hero{background:var(--white);padding:44px 0 0;}
.article-narrow{max-width:860px;margin:0 auto;}
.article-head h1{font-size:38px;line-height:1.36;font-weight:700;color:var(--ink);margin:14px 0 18px;letter-spacing:0;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;font-size:13.5px;color:var(--muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#BFB9A9;display:inline-block;}
.article-meta strong{color:var(--ink);font-weight:700;}
.article-cover{margin:30px auto 0;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow);}
.article-cover figcaption{margin-top:10px;font-size:12.5px;color:var(--muted);text-align:center;}
/* ===== keypoints ===== */
.keypoints{background:var(--mint);border:1px solid #CFDFD6;border-radius:var(--radius-lg);padding:26px 28px;}
.keypoints h2{font-size:18px;line-height:1.5;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.keypoints h2::before{content:"";width:5px;height:18px;border-radius:3px;background:var(--amber);}
.keypoints ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px 26px;}
.keypoints li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.75;color:#2B4A40;}
.keypoints li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--amber);}
/* ===== prose ===== */
.article-body{background:var(--white);padding:56px 0 24px;}
.prose{max-width:860px;margin:0 auto;font-size:16px;line-height:1.9;color:#232825;word-break:break-word;}
.prose p{margin:0 0 20px;}
.prose h2{font-size:24px;line-height:1.45;font-weight:700;color:var(--ink);margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--amber);}
.prose h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--ink-deep);margin:30px 0 12px;}
.prose h4{font-size:17px;font-weight:700;color:var(--ink-deep);margin:24px 0 10px;}
.prose ul,.prose ol{margin:0 0 20px;padding-left:24px;}
.prose li{margin-bottom:8px;}
.prose a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--amber-deep);}
.prose img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow);}
.prose blockquote{margin:0 0 22px;padding:16px 22px;background:var(--mint);border-left:4px solid var(--ink);border-radius:var(--radius);color:#23503F;font-size:15.5px;}
.prose blockquote p:last-child{margin-bottom:0;}
.prose code{background:#F1EEE6;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;color:#7A4A0C;}
.prose pre{background:#11332A;color:#DCEDE5;border-radius:var(--radius);padding:18px 20px;overflow-x:auto;margin:0 0 22px;font-size:14px;line-height:1.7;}
.prose pre code{background:none;border:none;color:inherit;padding:0;}
.prose table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14.5px;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.prose th{background:var(--mint);color:var(--ink);font-weight:700;}
.prose tr:nth-child(even) td{background:#FAF9F5;}
.prose hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
/* ===== notice ===== */
.notice-amber{
  max-width:860px;margin:8px auto 0;
  background:var(--amber-soft);border:1px solid #F0D7A6;border-left:5px solid var(--amber);
  border-radius:var(--radius);padding:20px 24px;
}
.notice-amber h3{font-size:16px;font-weight:700;color:#7D5103;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.notice-amber p{font-size:14.5px;line-height:1.85;color:#6B470A;margin:0;}
/* ===== empty state ===== */
.notice-empty{max-width:860px;margin:0 auto;background:var(--white);border:1px dashed var(--line);border-radius:var(--radius-lg);padding:56px 32px;text-align:center;}
.notice-empty h2{font-size:22px;color:var(--ink);margin-bottom:12px;}
.notice-empty p{color:var(--muted);font-size:15px;margin-bottom:22px;}
/* ===== tags row ===== */
.tag-row{max-width:860px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row .label{font-size:13px;font-weight:700;color:var(--ink);margin-right:4px;}
/* ===== related ===== */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.32);}
.related-card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-card h3{font-size:17px;line-height:1.55;font-weight:700;color:var(--ink);}
.related-card p{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}
.related-card .foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}
/* ===== pager ===== */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.pager-item{
  display:flex;flex-direction:column;gap:6px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 22px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.pager-item:hover{transform:translateY(-2px);border-color:rgba(20,81,63,.32);box-shadow:var(--shadow-hover);color:var(--ink);}
.pager-item span{font-size:12.5px;font-weight:700;color:var(--amber-deep);}
.pager-item strong{font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.6;}
.pager-back{margin-top:22px;text-align:center;}
/* ===== subscribe cta ===== */
.subscribe-card{
  background:var(--ink);color:#fff;border-radius:var(--radius-lg);
  padding:38px 40px;display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:center;
  box-shadow:var(--shadow-lg);
}
.subscribe-card h2{font-size:24px;line-height:1.4;font-weight:700;color:#fff;margin-bottom:10px;}
.subscribe-card p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.78);}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;height:46px;border-radius:10px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.1);color:#fff;padding:0 16px;font-size:14.5px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.55);}
.subscribe-form input:focus{outline:none;border-color:var(--amber);background:rgba(255,255,255,.16);}
.subscribe-form .btn{height:46px;}
/* ===== footer ===== */
.site-footer{background:var(--ink-deep);color:#D7E2DC;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1.25fr;gap:24px;padding-bottom:40px;}
.footer-brand .brand-mark{background:var(--amber);color:#3A2606;box-shadow:none;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(255,255,255,.6);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.7);}
.footer-col a{color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--amber);}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:700;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0 24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.6);}
.footer-bottom a{color:rgba(255,255,255,.82);}
.footer-bottom a:hover{color:var(--amber);}
/* ===== responsive ===== */
@media (max-width:1199px){
  .article-head h1{font-size:34px;}
  .related-grid{gap:20px;}
}
@media (max-width:991px){
  .main-nav{
    position:absolute;top:68px;left:-20px;right:-20px;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--white);border-bottom:1px solid var(--line);
    padding:10px 20px 18px;display:none;box-shadow:0 16px 30px rgba(20,60,48,.12);
  }
  .main-nav.nav-open{display:flex;}
  .main-nav a{padding:12px 10px;font-size:15px;}
  .main-nav a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text small{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .subscribe-card{grid-template-columns:1fr;padding:32px 26px;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .section{padding:44px 0;}
  .container{padding:0 16px;}
  .header-actions .btn-sm{display:none;}
  .article-hero{padding:30px 0 0;}
  .article-head h1{font-size:26px;line-height:1.45;margin:12px 0 14px;}
  .article-body{padding:40px 0 16px;}
  .prose{font-size:15.5px;line-height:1.9;}
  .prose h2{font-size:21px;margin:32px 0 14px;}
  .prose h3{font-size:18px;}
  .keypoints{padding:22px 20px;}
  .keypoints ul{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .pager{grid-template-columns:1fr;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:22px;}
}
@media (max-width:479px){
  .article-meta{font-size:12.5px;gap:6px 14px;}
  .notice-amber{padding:16px 18px;}
  .article-cover img{aspect-ratio:4/3;}
}

/* roulang page: category1 */
:root{
  --ink:#14513F;
  --ink-deep:#0E3B2F;
  --amber:#F2A63B;
  --amber-deep:#D98B21;
  --amber-soft:#FDF0DA;
  --mint:#E7EFEA;
  --bg:#F6F4EF;
  --bg-alt:#EDEAE1;
  --white:#FFFFFF;
  --text:#1B1F1D;
  --muted:#5C635E;
  --line:#DCD7CB;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:18px;
  --shadow:0 2px 8px rgba(20,60,48,.06);
  --shadow-hover:0 10px 24px rgba(20,60,48,.13);
  --shadow-lg:0 18px 40px rgba(20,60,48,.16);
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;font-weight:400;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--amber-deep);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section--white{background:var(--white);}
.section--alt{background:var(--bg-alt);}
.section-head{margin-bottom:34px;max-width:820px;}
.section-head h2{font-size:28px;line-height:1.4;font-weight:700;color:var(--ink);letter-spacing:0;}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--ink);
  background:var(--mint);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:12px 22px;font-size:15px;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 4px 12px rgba(20,81,63,.18);}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(20,81,63,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--mint);color:var(--ink-deep);transform:translateY(-2px);}
.btn-amber{background:var(--amber);color:#3A2606;box-shadow:0 4px 12px rgba(242,166,59,.28);}
.btn-amber:hover{background:var(--amber-deep);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}
/* ---------- badges & tags ---------- */
.badge{display:inline-flex;align-items:center;background:var(--mint);color:var(--ink);border-radius:999px;padding:3px 12px;font-size:12px;font-weight:700;line-height:1.7;}
.badge-amber{background:var(--amber-soft);color:#8A5A05;}
.tag{display:inline-flex;align-items:center;background:#F1EEE6;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 11px;font-size:12px;font-weight:600;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.97);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;border-radius:10px;font-weight:700;font-size:17px;
  box-shadow:0 4px 10px rgba(20,81,63,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap;}
.main-nav a{
  position:relative;padding:8px 13px;font-size:14.5px;font-weight:600;color:#3B443F;border-radius:8px;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.main-nav a:hover{background:var(--mint);color:var(--ink);}
.main-nav a.active{color:var(--ink);background:var(--mint);}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;background:var(--amber);border-radius:2px;}
.header-actions{display:flex;align-items:center;gap:10px;}
.search-link{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:10px;border:1px solid var(--line);background:var(--white);color:var(--ink);
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.search-link:hover{background:var(--mint);border-color:var(--ink);color:var(--ink-deep);}
.search-link svg{width:17px;height:17px;}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--white);align-items:center;justify-content:center;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;content:"";position:relative;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}
/* ---------- category hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:48px 0 42px;
  background:
    radial-gradient(760px 340px at 92% -20%, rgba(231,239,234,.95) 0%, rgba(231,239,234,0) 72%),
    linear-gradient(160deg,#F8F6F1 0%,#EDEAE1 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-110px;width:360px;height:360px;border-radius:50%;
  background:rgba(20,81,63,.06);pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);font-weight:600;}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb span{color:#A9A297;}
.cat-hero h1{font-size:38px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:0;}
.cat-hero-desc{margin-top:14px;max-width:760px;color:#43504A;font-size:16px;}
.cat-stats{display:flex;gap:38px;flex-wrap:wrap;margin-top:26px;padding-top:22px;border-top:1px solid rgba(20,81,63,.14);max-width:760px;}
.cat-stats .stat strong{display:block;font-size:24px;font-weight:700;color:var(--ink);line-height:1.3;}
.cat-stats .stat span{display:block;font-size:13px;color:var(--muted);}
/* ---------- chip band ---------- */
.chip-band{background:var(--white);border-bottom:1px solid var(--line);padding:16px 0;}
.chip-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.chip-row .chip-label{font-size:13px;font-weight:700;color:var(--muted);margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;padding:7px 16px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--muted);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover,.chip:focus-visible{background:var(--mint);color:var(--ink);border-color:var(--ink);}
/* ---------- entry grid ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.entry-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);}
.entry-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.entry-icon{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:var(--mint);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;
}
.entry-card h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.5;}
.entry-card .entry-sum{margin-top:8px;font-size:14.5px;color:var(--muted);}
.entry-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:14px;}
.entry-tags{display:flex;gap:6px;flex-wrap:wrap;margin:16px 0 18px;}
.entry-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);
}
.entry-link::after{content:"→";transition:transform .2s var(--ease);}
.entry-link:hover{color:var(--amber-deep);}
.entry-link:hover::after{transform:translateX(3px);}
/* ---------- rank list ---------- */
.rank-list{display:grid;gap:14px;}
.rank-item{
  display:flex;align-items:flex-start;gap:22px;padding:22px 24px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rank-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);}
.rank-no{
  font-size:30px;font-weight:700;line-height:1;color:rgba(20,81,63,.24);
  flex:0 0 52px;letter-spacing:-1px;padding-top:4px;
}
.rank-body h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;}
.rank-body p{margin-top:6px;font-size:14.5px;color:var(--muted);}
.rank-body .rank-meta{margin-top:10px;display:flex;gap:10px;flex-wrap:wrap;}
/* ---------- post list ---------- */
.post-list{display:grid;gap:14px;}
.post-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:22px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);}
.post-main{min-width:0;}
.post-title{font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;}
.post-sum{margin-top:6px;font-size:14px;color:var(--muted);}
.post-side{flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-end;gap:8px;}
.post-time{font-size:13px;color:var(--muted);white-space:nowrap;}
.empty-note{
  background:var(--white);border:1px dashed var(--line);border-radius:var(--radius);
  padding:32px;text-align:center;color:var(--muted);font-size:15px;
}
/* ---------- tutorial cards ---------- */
.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.tutorial-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tutorial-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(20,81,63,.3);}
.tutorial-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--mint);}
.tutorial-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.tutorial-body h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;}
.tutorial-body p{margin-top:8px;font-size:14px;color:var(--muted);flex:1;}
.tutorial-link{margin-top:14px;font-size:14px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px;}
.tutorial-link::after{content:"→";transition:transform .2s var(--ease);}
.tutorial-link:hover{color:var(--amber-deep);}
.tutorial-link:hover::after{transform:translateX(3px);}
/* ---------- tips ---------- */
.tips-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:36px;align-items:center;}
.tips-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);background:var(--mint);}
.tips-list{margin-top:20px;display:grid;gap:12px;}
.tips-list li{
  position:relative;padding:14px 18px 14px 46px;
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  font-size:14.5px;color:#3B443F;
}
.tips-list li::before{
  content:"";position:absolute;left:18px;top:21px;width:10px;height:10px;border-radius:3px;
  background:var(--amber);
}
.tips-list li strong{color:var(--ink);}
.notice-box{
  margin-top:22px;background:var(--amber-soft);border:1px solid #F3D9A8;border-left:4px solid var(--amber);
  border-radius:10px;padding:16px 18px;color:#6B4A0C;font-size:14px;line-height:1.8;
}
/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:background-color .2s var(--ease),border-color .2s var(--ease);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;min-height:60px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--ink);line-height:1;transition:color .2s var(--ease);}
.faq-item[open]{background:#FBF9F4;border-color:rgba(20,81,63,.3);}
.faq-item[open] summary::after{content:"−";color:var(--amber-deep);}
.faq-item summary:hover{color:var(--ink-deep);}
.faq-answer{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.85;}
/* ---------- cta ---------- */
.cta-box{
  background:var(--mint);border:1px solid #CFE0D6;border-radius:var(--radius-lg);
  padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
}
.cta-box h2{font-size:26px;font-weight:700;color:var(--ink);line-height:1.4;}
.cta-box p{margin-top:10px;color:#3F4F48;font-size:15px;}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 220px;height:44px;border-radius:10px;border:1px solid var(--line);
  padding:0 14px;font-size:15px;background:var(--white);color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:#9AA39D;}
.cta-form input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(20,81,63,.12);}
.cta-form .btn{height:44px;}
.cta-note{margin-top:12px;font-size:13px;color:#4E5C55;}
/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#D7E3DC;padding:60px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:24px;padding-bottom:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--amber);color:#2C1C02;box-shadow:none;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:#9EB7AC;}
.footer-brand p{font-size:14px;color:#B9CCC2;line-height:1.85;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#B9CCC2;}
.footer-col ul a:hover{color:var(--amber);}
.footer-contact li{font-size:13.5px;color:#B9CCC2;line-height:1.8;}
.footer-contact li strong{color:#E6F0EA;font-weight:700;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#93ABA0;
}
.footer-bottom a{color:#C7D9D0;text-decoration:underline;}
.footer-bottom a:hover{color:var(--amber);}
/* ---------- responsive ---------- */
@media (max-width:1200px){
  .cat-hero h1{font-size:34px;}
}
@media (max-width:1024px){
  .main-nav a{padding:8px 10px;font-size:14px;}
  .brand-text small{display:none;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .tutorial-grid{grid-template-columns:repeat(2,1fr);}
  .tips-wrap{grid-template-columns:1fr;}
  .cta-box{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .main-nav{
    display:none;
    position:absolute;left:0;right:0;top:68px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--white);border-bottom:1px solid var(--line);
    padding:12px 20px 18px;box-shadow:0 18px 30px rgba(20,60,48,.12);
  }
  .main-nav a{padding:12px 14px;font-size:15px;}
  .main-nav a.active::after{display:none;}
  .main-nav.is-open{display:flex;}
  .nav-toggle{display:flex;}
}
@media (max-width:768px){
  .section{padding:44px 0;}
  .cat-hero{padding:34px 0 32px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero-desc{font-size:15px;}
  .cat-stats{gap:22px;}
  .cat-stats .stat strong{font-size:20px;}
  .section-head h2{font-size:23px;}
  .entry-grid{grid-template-columns:1fr;}
  .tutorial-grid{grid-template-columns:1fr;}
  .post-row{flex-direction:column;gap:12px;}
  .post-side{flex-direction:row;align-items:center;gap:10px;}
  .rank-item{gap:16px;padding:18px;}
  .rank-no{font-size:24px;flex:0 0 40px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .cta-form .btn{width:100%;}
  .header-actions .btn-sm{display:none;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .cat-hero h1{font-size:24px;}
  .brand-text strong{font-size:14.5px;}
  .cta-box{padding:24px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;}
}