/* roulang page: index */
:root{
  --ink:#123C36;
  --ink-deep:#0B2723;
  --orange:#C4652A;
  --orange-deep:#A9521F;
  --gold:#E3C07B;
  --paper:#F6F3EC;
  --card:#FFFFFF;
  --dark:#0E1F1C;
  --line:#DCD4C4;
  --text:#1C2624;
  --muted:#5A6A66;
  --inverse:#F3F0E7;
  --radius:6px;
  --btn-radius:4px;
  --shadow-card:0 2px 0 rgba(18,60,54,.08);
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink);
  margin:0;
  line-height:1.38;
  font-weight:700;
  letter-spacing:0;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;}
a:hover{color:var(--orange);}
button{font-family:inherit;}
.grid-container.site-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.site-section{padding:72px 0;}
.band-paper{background:var(--paper);}
.band-white{background:var(--card);}
.band-dark{background:var(--dark);}
.band-grid{
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(to right,rgba(18,60,54,.055) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to bottom,rgba(18,60,54,.045) 0 1px,transparent 1px 64px);
}
.rule-line{height:1px;background:var(--line);border:0;margin:0;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--btn-radius);
  font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-solid:hover{background:var(--ink-deep);border-color:var(--ink-deep);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:rgba(18,60,54,.06);border-color:var(--ink-deep);color:var(--ink-deep);}
.btn-orange{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-orange:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff;transform:translateY(-1px);}
.btn-outline-orange{background:transparent;color:var(--orange);border-color:var(--orange);}
.btn-outline-orange:hover{background:rgba(196,101,42,.08);color:var(--orange-deep);border-color:var(--orange-deep);}
.btn-outline-light{background:transparent;color:var(--inverse);border-color:rgba(243,240,231,.6);}
.btn-outline-light:hover{background:rgba(243,240,231,.1);color:#fff;border-color:#fff;}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}

/* tags */
.tag{display:inline-block;font-size:12px;line-height:1.6;padding:3px 10px;border-radius:999px;border:1px solid;background:transparent;letter-spacing:.04em;}
.tag-orange{color:var(--orange);border-color:var(--orange);}
.tag-ink{color:var(--ink);border-color:var(--ink);}
.tag-soft{color:var(--muted);border-color:var(--line);}

/* header */
.site-header{position:relative;z-index:40;background:var(--card);border-bottom:1px solid var(--line);}
.header-main{padding:14px 0;}
.header-bar{display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;}
.brand-name{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.brand-divider{width:1px;height:22px;background:var(--line);display:block;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.06em;line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--text);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--orange);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.header-actions .btn{padding:10px 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--btn-radius);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mask{position:fixed;inset:0;background:rgba(11,39,35,.5);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55;}

/* notice bar */
.notice-bar{background:rgba(18,60,54,.08);border-top:1px solid rgba(18,60,54,.12);border-bottom:1px solid var(--line);}
.notice-inner{display:flex;align-items:center;gap:14px;height:40px;font-size:13px;overflow:hidden;}
.notice-chip{background:var(--orange);color:#fff;font-size:12px;padding:2px 10px;border-radius:999px;flex:0 0 auto;letter-spacing:.06em;}
.notice-text{color:var(--text);white-space:nowrap;overflow-x:auto;flex:1 1 auto;scrollbar-width:none;}
.notice-text::-webkit-scrollbar{display:none;}
.notice-text span{margin-right:36px;}
.notice-more{color:var(--ink);flex:0 0 auto;font-size:13px;border-bottom:1px solid rgba(18,60,54,.4);}
.notice-more:hover{color:var(--orange);border-color:var(--orange);}

/* hero */
.hero{padding:64px 0 56px;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:52px;align-items:start;}
.hero-badge{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--orange);font-family:var(--mono);margin-bottom:14px;}
.hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.25;letter-spacing:0;color:var(--ink);
}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink);font-weight:600;}
.hero-desc{margin-top:16px;font-size:15.5px;line-height:1.95;color:var(--muted);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags .tag{font-size:12.5px;padding:4px 12px;color:var(--ink);border-color:rgba(18,60,54,.32);}
.console{
  background:var(--dark);border:1px solid rgba(227,192,123,.26);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.console-bar{
  display:flex;align-items:center;gap:10px;padding:11px 16px;
  border-bottom:1px solid rgba(243,240,231,.14);
  font-family:var(--mono);font-size:12.5px;color:rgba(243,240,231,.72);letter-spacing:.06em;
}
.console-dots{display:flex;gap:6px;}
.console-dots i{display:block;width:8px;height:8px;border-radius:50%;background:rgba(243,240,231,.22);}
.console-body{padding:18px 18px 20px;font-family:var(--mono);font-size:13.5px;color:#E8E4D8;}
.console-rows li{
  display:flex;align-items:baseline;gap:12px;padding:7px 0;
  border-bottom:1px dashed rgba(243,240,231,.12);
}
.console-rows li:last-child{border-bottom:none;}
.console-idx{color:var(--orange);font-size:12px;flex:0 0 auto;}
.console-txt{flex:1 1 auto;min-width:0;}
.console-tag{
  flex:0 0 auto;font-family:var(--sans);font-size:11px;color:var(--gold);
  border:1px solid rgba(227,192,123,.42);border-radius:999px;padding:1px 8px;letter-spacing:.04em;
}
.quick-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  margin-top:14px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.quick-strip a{
  display:block;padding:11px 10px;text-align:center;background:#fff;font-size:13.5px;color:var(--ink);
  transition:background-color .18s ease,color .18s ease;
}
.quick-strip a:hover{background:var(--paper);color:var(--orange);}

/* section headings */
.sec-head{margin-bottom:36px;}
.sec-idx{font-family:var(--mono);font-size:13px;color:var(--orange);letter-spacing:.14em;}
.sec-title{
  position:relative;margin-top:8px;padding-left:14px;
  font-size:clamp(22px,3vw,32px);line-height:1.36;color:var(--ink);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:1.05em;background:var(--orange);
}
.sec-desc{margin-top:14px;max-width:780px;font-size:15px;line-height:1.9;color:var(--muted);}

/* generic grids */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.grid-3>*,.grid-2>*,.grid-4>*{min-width:0;}

/* card base */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-2px);border-color:#C9BFA9;box-shadow:0 3px 0 rgba(18,60,54,.1);}

/* download */
.dl-card{padding:24px 22px;display:flex;flex-direction:column;gap:14px;height:100%;border-left:3px solid var(--line);}
.dl-card:hover{border-left-color:var(--orange);}
.dl-head{display:flex;align-items:center;gap:12px;}
.dl-icon{width:38px;height:38px;flex:0 0 auto;color:var(--ink);}
.dl-name{font-family:var(--serif);font-size:18px;color:var(--ink);font-weight:700;}
.dl-format{font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.08em;}
.dl-note{font-size:13.5px;color:var(--muted);line-height:1.75;flex:1 1 auto;}
.dl-card .btn{width:100%;}

/* feature group */
.feature-wrap{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.45fr);gap:24px;}
.feature-main{padding:28px 26px;display:flex;flex-direction:column;gap:14px;background:var(--ink);border-color:var(--ink);color:var(--inverse);}
.feature-main:hover{transform:translateY(-2px);border-color:var(--ink);}
.feature-main h3{color:var(--inverse);font-size:22px;}
.feature-main p{color:rgba(243,240,231,.78);font-size:14.5px;line-height:1.85;}
.feature-main ul li{
  position:relative;padding-left:18px;font-size:14px;color:rgba(243,240,231,.9);line-height:1.9;
}
.feature-main ul li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;background:var(--orange);border-radius:1px;}
.feature-list{display:flex;flex-direction:column;gap:16px;}
.feature-row{padding:20px 22px;display:grid;grid-template-columns:38px minmax(0,1fr);gap:14px;align-items:start;}
.feature-num{font-family:var(--mono);font-size:14px;color:var(--orange);border-top:2px solid var(--orange);padding-top:6px;letter-spacing:.06em;}
.feature-row h3{font-size:18px;margin-bottom:6px;}
.feature-row p{font-size:14px;color:var(--muted);line-height:1.8;}
.feature-row ul{margin-top:8px;}
.feature-row ul li{position:relative;padding-left:14px;font-size:13.5px;color:var(--muted);line-height:1.85;}
.feature-row ul li::before{content:"";position:absolute;left:0;top:.8em;width:5px;height:5px;background:var(--gold);border-radius:1px;}
.feature-link{display:inline-block;margin-top:12px;font-size:13.5px;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:1px;}
.feature-link:hover{color:var(--orange);border-color:var(--orange);}

/* flow */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;position:relative;}
.flow-step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;position:relative;box-shadow:var(--shadow-card);}
.flow-step::after{
  content:"";position:absolute;right:-18px;top:38px;width:18px;border-top:1px dashed var(--line);
}
.flow-step:last-child::after{display:none;}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;
  background:var(--orange);color:#fff;font-family:var(--mono);font-size:13px;margin-bottom:12px;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:13.8px;color:var(--muted);line-height:1.8;}

/* demo */
.demo-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;align-items:center;}
.demo-frame{border:1px solid var(--line);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-card);overflow:hidden;}
.demo-frame svg{display:block;width:100%;height:auto;}
.demo-list li{display:grid;grid-template-columns:34px minmax(0,1fr);gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);}
.demo-list li:last-child{border-bottom:none;}
.demo-list .n{font-family:var(--mono);color:var(--orange);font-size:13px;padding-top:2px;}
.demo-list h3{font-size:16.5px;margin-bottom:4px;}
.demo-list p{font-size:14px;color:var(--muted);line-height:1.8;}

/* cases */
.case-card{padding:24px 22px;display:flex;flex-direction:column;gap:12px;height:100%;}
.case-card h3{font-size:18px;}
.case-card ol{counter-reset:cs;}
.case-card ol li{
  counter-increment:cs;position:relative;padding-left:26px;font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:6px;
}
.case-card ol li::before{
  content:counter(cs);position:absolute;left:0;top:2px;width:17px;height:17px;border-radius:50%;
  border:1px solid var(--orange);color:var(--orange);font-size:11px;font-family:var(--mono);
  display:flex;align-items:center;justify-content:center;
}
.case-key{
  margin-top:auto;background:rgba(227,192,123,.2);border-left:3px solid var(--gold);
  padding:10px 12px;font-size:13px;color:var(--ink);line-height:1.7;
}

/* tiers */
.tier-card{padding:24px 22px;display:flex;flex-direction:column;gap:14px;height:100%;position:relative;}
.tier-card.recommend{border-color:var(--orange);border-width:1.5px;}
.tier-badge{
  position:absolute;top:-11px;right:18px;background:var(--orange);color:#fff;font-size:11.5px;
  padding:2px 10px;border-radius:999px;letter-spacing:.06em;
}
.tier-card h3{font-size:19px;}
.tier-rows{display:flex;flex-direction:column;gap:0;}
.tier-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px;}
.tier-row:last-child{border-bottom:none;}
.tier-row dt{color:var(--muted);flex:0 1 auto;min-width:0;}
.tier-row dd{margin:0;color:var(--ink);text-align:right;flex:0 1 auto;min-width:0;font-weight:600;}
.tier-tip{font-size:12.5px;color:var(--muted);margin-top:18px;line-height:1.8;}

/* questions wall */
.q-card{padding:25px 22px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:10px;min-height:150px;}
.q-card h3{font-size:16.5px;line-height:1.65;}
.q-card .q-ans{
  font-size:13.8px;color:var(--muted);line-height:1.8;max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.q-card.is-open .q-ans{max-height:260px;}
.q-card .q-more{font-size:12.5px;color:var(--orange);margin-top:auto;}

/* topic wall */
.topic-tile{padding:18px 16px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);transition:background-color .18s ease,border-color .18s ease;}
.topic-tile:hover{background:rgba(18,60,54,.06);border-color:#C9BFA9;}
.topic-tile strong{display:block;font-family:var(--serif);font-size:16px;color:var(--ink);margin-bottom:4px;}
.topic-tile span{font-size:13px;color:var(--muted);line-height:1.7;}

/* news */
.news-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:32px;align-items:start;}
.news-lead{padding:0;overflow:hidden;display:flex;flex-direction:column;height:100%;}
.news-thumb{
  aspect-ratio:16/9;border-bottom:1px solid var(--line);
  background:
    repeating-linear-gradient(to right,rgba(18,60,54,.07) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(to bottom,rgba(18,60,54,.06) 0 1px,transparent 1px 48px),
    var(--paper);
  position:relative;
}
.news-thumb::after{
  content:"";position:absolute;left:20px;right:20px;bottom:20px;height:1px;background:rgba(18,60,54,.18);
}
.news-lead-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.news-lead-body h3{font-size:21px;line-height:1.5;}
.news-lead-body h3 a{color:var(--ink);}
.news-lead-body h3 a:hover{color:var(--orange);}
.news-lead-body p{font-size:14px;color:var(--muted);line-height:1.85;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);font-family:var(--mono);}
.news-list{display:flex;flex-direction:column;}
.news-item{padding:14px 0;border-bottom:1px dashed var(--line);display:flex;flex-direction:column;gap:6px;}
.news-item:first-child{padding-top:0;}
.news-item h4{font-size:15.5px;line-height:1.6;font-family:var(--sans);font-weight:600;}
.news-item h4 a{color:var(--ink);}
.news-item h4 a:hover{color:var(--orange);}
.news-item .news-meta{font-size:12px;}
.news-more{display:inline-block;margin-top:18px;font-size:14px;color:var(--ink);border-bottom:1px solid var(--ink);}
.news-more:hover{color:var(--orange);border-color:var(--orange);}
.news-empty{padding:28px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:#fff;text-align:center;}
.news-empty p{font-size:14.5px;color:var(--muted);margin-bottom:14px;}

/* cta band */
.cta-band{background:var(--ink);color:var(--inverse);padding:56px 0;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;}
.cta-band h2{color:var(--inverse);font-size:clamp(22px,2.8vw,30px);}
.cta-band p{margin-top:12px;color:rgba(243,240,231,.78);font-size:15px;line-height:1.85;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* knowledge */
.know-card{padding:24px 22px;display:flex;flex-direction:column;gap:12px;height:100%;}
.know-card h3{font-size:18px;}
.know-desc{font-size:13.8px;color:var(--muted);line-height:1.8;}
.know-links li{padding:8px 0;border-top:1px dashed var(--line);font-size:14px;line-height:1.75;}
.know-links li:first-child{border-top:none;padding-top:0;}
.know-links a{color:var(--ink);border-bottom:1px solid transparent;}
.know-links a:hover{color:var(--orange);border-color:var(--orange);}
.know-links.static li{color:var(--muted);position:relative;padding-left:16px;}
.know-links.static li::before{content:"";position:absolute;left:0;top:.95em;width:6px;height:6px;background:var(--gold);border-radius:1px;}

/* glossary */
.glossary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;}
.glossary .g-row{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:16px;padding:13px 8px;
  border-bottom:1px solid var(--line);transition:background-color .16s ease;
}
.glossary .g-row:hover{background:var(--paper);}
.glossary dt{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:15.5px;}
.glossary dd{margin:0;font-size:14px;color:var(--muted);line-height:1.8;}

/* channels */
.channel-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.channel-item{
  display:flex;align-items:center;gap:14px;padding:18px 20px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);transition:border-color .18s ease,transform .18s ease,background-color .18s ease;
}
.channel-item:hover{border-color:var(--orange);transform:translateY(-2px);background:#fffdf8;}
.channel-item .ch-name{font-family:var(--serif);font-size:16.5px;color:var(--ink);font-weight:700;flex:0 0 auto;}
.channel-item .ch-desc{font-size:13px;color:var(--muted);flex:1 1 auto;min-width:0;line-height:1.7;}
.channel-item .ch-arrow{color:var(--orange);font-family:var(--mono);flex:0 0 auto;}

/* faq */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;padding:20px 4px;background:transparent;border:0;
  text-align:left;cursor:pointer;font-size:16px;color:var(--ink);font-weight:600;font-family:var(--sans);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange);}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border:1px solid var(--orange);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--orange);font-family:var(--mono);font-size:14px;
  transition:transform .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-item.is-open .faq-a{max-height:400px;}
.faq-a p{padding:0 4px 20px 44px;font-size:14.5px;color:var(--muted);line-height:1.9;}

/* risk bar */
.risk-bar{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;}
.risk-inner{display:flex;align-items:flex-start;gap:20px;flex-wrap:wrap;}
.risk-title{font-family:var(--serif);font-size:16px;color:var(--ink);flex:0 0 auto;border-left:3px solid var(--orange);padding-left:10px;}
.risk-text{flex:1 1 320px;min-width:0;font-size:13.5px;color:var(--muted);line-height:1.85;}
.risk-link{flex:0 0 auto;font-size:13.5px;color:var(--ink);border-bottom:1px solid var(--ink);}
.risk-link:hover{color:var(--orange);border-color:var(--orange);}

/* footer */
.site-footer{background:var(--ink);color:var(--inverse);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);gap:32px;}
.footer-brand .f-name{font-family:var(--serif);font-size:22px;color:var(--inverse);font-weight:700;letter-spacing:.04em;}
.footer-brand p{margin-top:12px;font-size:13.5px;color:rgba(243,240,231,.7);line-height:1.85;max-width:340px;}
.footer-col h4{color:var(--inverse);font-size:15px;margin-bottom:14px;font-family:var(--serif);}
.footer-col li{margin-bottom:9px;}
.footer-col a{color:rgba(243,240,231,.78);font-size:13.5px;}
.footer-col a:hover{color:var(--gold);}
.footer-col p{font-size:13px;color:rgba(243,240,231,.66);line-height:1.85;}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(243,240,231,.16);padding:18px 0 22px;
  font-size:12.5px;color:rgba(243,240,231,.55);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
}

/* responsive */
@media (max-width:1024px){
  .site-section{padding:56px 0;}
  .hero{padding:48px 0 44px;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:34px;}
  .feature-wrap{grid-template-columns:minmax(0,1fr);}
  .demo-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .news-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-step::after{display:none;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:22px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .main-nav{
    position:fixed;top:0;left:0;bottom:0;width:min(320px,84vw);
    background:var(--ink-deep);flex-direction:column;align-items:stretch;gap:0;
    padding:78px 22px 24px;margin-left:0;transform:translateX(-100%);
    transition:transform .24s ease;z-index:60;overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  body.nav-open .nav-mask{opacity:1;visibility:visible;}
  .main-nav a{
    color:var(--inverse);height:48px;display:flex;align-items:center;font-size:15.5px;
    border-bottom:1px solid rgba(243,240,231,.14);padding:0;
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{color:var(--gold);}
  .nav-toggle{display:flex;order:3;margin-left:auto;}
  .header-bar{gap:14px;flex-wrap:wrap;}
  .header-actions{margin-left:auto;gap:8px;}
  .header-actions .btn{padding:9px 14px;font-size:13px;}
  .brand-sub{display:none;}
  .glossary{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:768px){
  .grid-container.site-container{padding-left:20px;padding-right:20px;}
  .site-section{padding:44px 0;}
  .hero h1{font-size:28px;}
  .hero-desc{font-size:15px;}
  .grid-3,.grid-2,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .channel-list{grid-template-columns:minmax(0,1fr);}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .header-bar{gap:10px;}
  .brand-name{font-size:21px;}
}
@media (max-width:520px){
  .grid-3,.grid-2,.grid-4,.flow-grid{grid-template-columns:minmax(0,1fr);}
  .quick-strip{grid-template-columns:minmax(0,1fr);}
  .hero-actions .btn,.cta-actions .btn{width:100%;min-height:44px;}
  .glossary .g-row{grid-template-columns:minmax(0,1fr);gap:4px;}
  .tier-row{flex-direction:column;gap:2px;}
  .tier-row dd{text-align:left;}
  .news-lead-body h3{font-size:18px;}
  .notice-inner{height:auto;padding:8px 0;}
  .risk-inner{gap:10px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --ink:#123C36;
  --ink-deep:#0B2723;
  --orange:#C4652A;
  --orange-deep:#A9521F;
  --gold:#E3C07B;
  --paper:#F6F3EC;
  --card:#FFFFFF;
  --dark:#0E1F1C;
  --line:#DCD4C4;
  --text:#1C2624;
  --muted:#5A6A66;
  --inverse:#F3F0E7;
  --radius:6px;
  --btn-radius:4px;
  --shadow-card:0 2px 0 rgba(18,60,54,.08);
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:var(--sans);font-size:16px;line-height:1.85;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orange);}
p{margin:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font-family:inherit;}
.grid-container.site-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.band-grid{
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(to right,rgba(18,60,54,.055) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to bottom,rgba(18,60,54,.045) 0 1px,transparent 1px 64px);
}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--btn-radius);
  font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-solid:hover{background:var(--ink-deep);border-color:var(--ink-deep);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:rgba(18,60,54,.06);border-color:var(--ink-deep);color:var(--ink-deep);}
.btn-orange{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-orange:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff;transform:translateY(-1px);}
.btn-outline-orange{background:transparent;color:var(--orange);border-color:var(--orange);}
.btn-outline-orange:hover{background:rgba(196,101,42,.08);color:var(--orange-deep);border-color:var(--orange-deep);}
.btn-outline-light{background:transparent;color:var(--inverse);border-color:rgba(243,240,231,.6);}
.btn-outline-light:hover{background:rgba(243,240,231,.1);color:#fff;border-color:#fff;}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.btn-sm{padding:9px 12px;font-size:13.5px;width:100%;}
/* 标签 */
.tag{display:inline-block;font-size:12px;line-height:1.6;padding:3px 10px;border-radius:999px;border:1px solid;background:transparent;letter-spacing:.04em;}
.tag-orange{color:var(--orange);border-color:var(--orange);}
.tag-ink{color:var(--ink);border-color:var(--ink);}
.tag-soft{color:var(--muted);border-color:var(--line);}
/* 页头 */
.site-header{position:relative;z-index:40;background:var(--card);border-bottom:1px solid var(--line);}
.header-main{padding:14px 0;}
.header-bar{display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;}
.brand-name{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.brand-divider{width:1px;height:22px;background:var(--line);display:block;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.06em;line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--text);white-space:nowrap;}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--orange);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.header-actions .btn{padding:10px 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--btn-radius);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mask{position:fixed;inset:0;background:rgba(11,39,35,.5);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55;}
body.nav-open .nav-mask{opacity:1;visibility:visible;}
/* 公告条 */
.notice-bar{background:rgba(18,60,54,.06);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.notice-inner{display:flex;align-items:center;gap:12px;min-height:40px;font-size:13px;color:var(--muted);}
.notice-chip{background:var(--orange);color:#fff;font-size:12px;padding:2px 10px;border-radius:999px;flex:0 0 auto;letter-spacing:.06em;}
.notice-text{display:flex;gap:34px;flex:1 1 auto;overflow:auto;white-space:nowrap;scrollbar-width:none;}
.notice-text::-webkit-scrollbar{display:none;}
.notice-text span{flex:0 0 auto;}
.notice-more{flex:0 0 auto;font-size:13px;color:var(--ink);}
.notice-more:hover{color:var(--orange);}
/* 面包屑 */
.page-head{border-bottom:1px solid var(--line);padding:22px 0 20px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{color:var(--line);font-family:var(--mono);}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
/* 文章布局 */
.article-section{padding:52px 0 64px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}
.article-main{min-width:0;}
.article-main > *{max-width:760px;}
.article-header{margin-bottom:26px;}
.article-header .tag{margin-bottom:14px;}
.article-header h1{
  font-family:var(--serif);font-size:clamp(26px,3.4vw,40px);line-height:1.35;color:var(--ink);
  word-break:normal;overflow-wrap:break-word;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:18px;padding-top:16px;
  border-top:1px dashed var(--line);font-size:13px;color:var(--muted);
}
.meta-row .m-time{font-family:var(--mono);letter-spacing:.02em;}
.meta-row .m-dot{color:var(--line);}
/* 阅读提示卡 */
.reading-card{
  background:#FBFAF5;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:20px 24px;margin-bottom:34px;
}
.reading-card .rc-title{
  font-family:var(--serif);font-size:16px;color:var(--ink);margin-bottom:12px;
  padding-left:12px;border-left:3px solid var(--orange);line-height:1.5;
}
.reading-card ul li{
  position:relative;padding-left:16px;font-size:14.5px;line-height:1.85;color:var(--muted);margin-bottom:8px;
}
.reading-card ul li:last-child{margin-bottom:0;}
.reading-card ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--orange);
}
/* 正文 */
.article-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:36px 40px;color:var(--text);
}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{color:var(--ink);font-family:var(--serif);}
.article-body h2{
  font-size:22px;line-height:1.5;margin:36px 0 14px;padding-left:14px;border-left:3px solid var(--orange);
  scroll-margin-top:24px;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:18px;line-height:1.6;margin:26px 0 10px;}
.article-body h4{font-size:16px;margin:20px 0 8px;}
.article-body p{margin:0 0 18px;font-size:16px;line-height:1.9;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:0;}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:8px;line-height:1.85;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--orange);}
.article-body ol{counter-reset:art-ol;}
.article-body ol li{position:relative;padding-left:22px;margin-bottom:8px;counter-increment:art-ol;}
.article-body ol li::before{
  content:counter(art-ol);position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;color:var(--orange);
}
.article-body blockquote{
  margin:0 0 18px;padding:16px 20px;background:#FBFAF5;border-left:3px solid var(--ink);
  border-radius:0 var(--radius) var(--radius) 0;color:var(--muted);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(18,60,54,.4);}
.article-body a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.article-body strong{color:var(--ink);}
.article-body img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:var(--radius);margin:18px 0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:0 0 20px;font-size:14.5px;border:1px solid var(--line);
}
.article-body thead th{background:var(--ink);color:var(--inverse);font-weight:600;text-align:left;padding:10px 12px;border:1px solid var(--ink);}
.article-body tbody td{padding:10px 12px;border:1px solid var(--line);background:#fff;color:var(--text);}
.article-body tbody tr:nth-child(even) td{background:#FBFAF5;}
.article-body hr{border:none;border-top:1px dashed var(--line);margin:26px 0;}
.article-body .mark{background:rgba(227,192,123,.36);padding:0 2px;}
/* 空态 */
.article-empty{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:44px 32px;text-align:center;
}
.article-empty .ae-title{font-family:var(--serif);font-size:22px;color:var(--ink);margin-bottom:10px;}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:22px;}
/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px;min-width:0;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:18px 18px 20px;
}
.side-title{
  font-family:var(--serif);font-size:15px;color:var(--ink);margin-bottom:12px;
  padding-left:10px;border-left:3px solid var(--orange);line-height:1.5;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.7;color:var(--muted);padding:6px 8px;border-radius:4px;
  border-left:2px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.toc-list a:hover,.toc-list a.is-current{background:#FBFAF5;color:var(--ink);border-left-color:var(--orange);}
.side-download .dl-note{font-size:12.5px;color:var(--muted);line-height:1.7;margin-bottom:12px;}
.dl-buttons{display:flex;flex-direction:column;gap:8px;}
.side-related li{border-bottom:1px dashed var(--line);padding-bottom:10px;margin-bottom:10px;}
.side-related li:last-child{border-bottom:none;padding-bottom:0;margin-bottom:0;}
.side-related a{display:block;font-size:13.5px;line-height:1.7;color:var(--text);}
.side-related a:hover{color:var(--orange);}
.side-related .r-time{display:block;margin-top:4px;font-size:12px;color:var(--muted);font-family:var(--mono);}
/* 相关推荐 */
.related{margin-top:38px;}
.related-title{font-family:var(--serif);font-size:20px;color:var(--ink);padding-left:12px;border-left:3px solid var(--orange);margin-bottom:16px;line-height:1.5;}
.rel-list{display:flex;flex-direction:column;gap:12px;}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:16px 18px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(18,60,54,.45);box-shadow:0 4px 0 rgba(18,60,54,.1);}
.rel-card .rel-name{display:block;font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.65;overflow-wrap:break-word;}
.rel-card .rel-desc{display:block;font-size:13.5px;color:var(--muted);line-height:1.75;margin-top:6px;}
.rel-card .rel-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;font-size:12px;color:var(--muted);}
.rel-card .rel-meta .rm-time{font-family:var(--mono);}
/* 风险提示 */
.risk-note{
  margin-top:32px;background:#FBFAF5;border:1px solid var(--line);border-left:3px solid var(--orange);
  border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;
}
.risk-note .rn-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:8px;letter-spacing:.04em;}
.risk-note p{font-size:13.5px;color:var(--muted);line-height:1.85;margin-bottom:6px;}
.risk-note p:last-child{margin-bottom:0;}
/* 返回入口 */
.back-links{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;padding-top:18px;border-top:1px dashed var(--line);}
.text-link{font-size:14px;color:var(--ink);border-bottom:1px solid rgba(18,60,54,.4);padding-bottom:1px;}
.text-link:hover{color:var(--orange);border-bottom-color:var(--orange);}
/* 页脚 */
.site-footer{background:var(--ink);color:rgba(243,240,231,.78);padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-brand .f-name{font-family:var(--serif);font-size:22px;color:#fff;margin-bottom:12px;letter-spacing:.04em;}
.footer-brand p{font-size:13.5px;line-height:1.9;color:rgba(243,240,231,.7);}
.footer-col h4{font-size:14px;color:var(--gold);letter-spacing:.08em;margin-bottom:14px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(243,240,231,.8);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(243,240,231,.62);}
.footer-bottom{
  border-top:1px solid rgba(243,240,231,.16);padding:18px 0;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:12.5px;color:rgba(243,240,231,.55);
}
/* 响应式 */
@media screen and (max-width:1024px){
  .header-bar{flex-wrap:nowrap;gap:14px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);margin-left:0;
    background:var(--ink-deep);flex-direction:column;align-items:stretch;gap:0;
    padding:80px 20px 24px;transform:translateX(102%);transition:transform .26s ease;
    z-index:60;overflow-y:auto;
  }
  .main-nav a{
    color:var(--inverse);font-size:16px;padding:14px 4px;min-height:48px;display:flex;align-items:center;
    border-bottom:1px solid rgba(243,240,231,.12);white-space:normal;
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{color:var(--gold);font-weight:600;}
  body.nav-open .main-nav{transform:none;}
  body.nav-open{overflow:hidden;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:34px;}
  .article-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .article-body{padding:28px 24px;}
}
@media screen and (max-width:768px){
  .grid-container.site-container{padding-left:18px;padding-right:18px;}
  .header-main{padding:10px 0;}
  .brand-name{font-size:20px;}
  .brand-sub{display:none;}
  .brand-divider{display:none;}
  .header-actions .btn{padding:8px 12px;font-size:13px;}
  .header-actions .btn-outline-orange{display:none;}
  .notice-inner{font-size:12.5px;}
  .article-section{padding:36px 0 48px;}
  .article-body{padding:24px 18px;}
  .article-body h2{font-size:20px;}
  .breadcrumb .current{white-space:normal;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:520px){
  .header-actions .btn{display:none;}
  .article-header h1{font-size:24px;}
  .reading-card{padding:16px 18px;}
  .article-body{padding:20px 16px;}
  .article-body p,.article-body li{font-size:15.5px;}
  .article-body table{font-size:13.5px;}
  .btn{width:100%;}
  .btn-sm{width:100%;}
  .back-links{gap:12px;}
}

/* roulang page: category1 */
:root{
  --ink:#123C36;
  --ink-deep:#0B2723;
  --orange:#C4652A;
  --orange-deep:#A9521F;
  --gold:#E3C07B;
  --paper:#F6F3EC;
  --card:#FFFFFF;
  --dark:#0E1F1C;
  --line:#DCD4C4;
  --text:#1C2624;
  --muted:#5A6A66;
  --inverse:#F3F0E7;
  --radius:6px;
  --btn-radius:4px;
  --shadow-card:0 2px 0 rgba(18,60,54,.08);
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orange);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);letter-spacing:0;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
dl,dd,dt{margin:0;}
.grid-container.site-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--btn-radius);
  font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-solid:hover{background:var(--ink-deep);border-color:var(--ink-deep);color:#fff;transform:translateY(-1px);}
.btn-solid:active{transform:translateY(0);}
.btn-orange{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-orange:hover{background:var(--orange-deep);border-color:var(--orange-deep);color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:rgba(18,60,54,.06);border-color:var(--ink-deep);color:var(--ink-deep);}
.btn-outline-orange{background:transparent;color:var(--orange);border-color:var(--orange);}
.btn-outline-orange:hover{background:rgba(196,101,42,.08);color:var(--orange-deep);border-color:var(--orange-deep);}
.btn-outline-light{background:transparent;color:var(--inverse);border-color:rgba(243,240,231,.6);}
.btn-outline-light:hover{background:rgba(243,240,231,.12);color:#fff;border-color:#fff;}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
/* tags */
.tag{display:inline-block;font-size:12px;line-height:1.6;padding:3px 10px;border-radius:999px;border:1px solid;background:transparent;letter-spacing:.04em;}
.tag-orange{color:var(--orange);border-color:var(--orange);}
.tag-ink{color:var(--ink);border-color:var(--ink);}
.tag-soft{color:var(--muted);border-color:var(--line);}
/* header */
.site-header{position:relative;z-index:40;background:var(--card);border-bottom:1px solid var(--line);}
.header-main{padding:14px 0;}
.header-bar{display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;}
.brand-name{font-family:var(--serif);font-size:24px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.brand-divider{width:1px;height:22px;background:var(--line);display:block;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.06em;line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--text);white-space:nowrap;}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--orange);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.header-actions .btn{padding:10px 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--btn-radius);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;position:relative;z-index:65;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-mask{position:fixed;inset:0;background:rgba(11,39,35,.5);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55;}
.nav-mask.is-visible{opacity:1;visibility:visible;}
.notice-bar{background:rgba(18,60,54,.08);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.notice-inner{display:flex;align-items:center;gap:14px;min-height:40px;padding:6px 0;font-size:13px;color:var(--muted);}
.notice-chip{background:var(--orange);color:#fff;font-size:12px;padding:2px 10px;border-radius:999px;flex:0 0 auto;letter-spacing:.06em;}
.notice-text{display:flex;gap:32px;overflow:hidden;flex:1 1 auto;white-space:nowrap;}
.notice-text span{flex:0 0 auto;}
.notice-more{flex:0 0 auto;font-size:13px;color:var(--ink);border-bottom:1px solid transparent;}
.notice-more:hover{border-bottom-color:var(--orange);}
.ba-short{display:none;}
/* breadcrumb */
.crumb-bar{padding:14px 0;background:var(--paper);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--orange);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink);font-weight:600;}
/* sections */
.site-section{position:relative;padding:72px 0;}
.section-paper{background:var(--paper);}
.section-white{background:#fff;}
.section-dark{background:var(--dark);color:var(--inverse);}
.section-dark h2,.section-dark h3{color:#fff;}
.band-grid{
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(to right,rgba(18,60,54,.055) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to bottom,rgba(18,60,54,.045) 0 1px,transparent 1px 64px);
}
.sec-head{margin-bottom:36px;max-width:760px;}
.sec-head .sec-index{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  color:var(--orange);margin-bottom:10px;
}
.sec-head h2{
  position:relative;padding-left:14px;font-size:clamp(22px,3vw,32px);line-height:1.35;
}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--orange);}
.sec-sub{margin-top:12px;color:var(--muted);font-size:15px;max-width:640px;}
.section-dark .sec-sub{color:rgba(243,240,231,.72);}
.link-inline{color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:1px;font-weight:600;}
.link-inline:hover{color:var(--orange);border-bottom-color:var(--orange);}
/* page head */
.page-head{padding:44px 0 40px;border-bottom:1px solid var(--line);}
.page-head h1{font-size:clamp(26px,3.6vw,40px);line-height:1.3;color:var(--ink);}
.page-lead{margin-top:14px;font-size:15.5px;color:var(--muted);max-width:720px;}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.filter-row .tag{font-size:12.5px;padding:5px 14px;color:var(--ink);border-color:rgba(18,60,54,.28);background:#fff;}
.filter-row .tag.is-on{color:#fff;background:var(--ink);border-color:var(--ink);}
/* grids */
.triple-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.dual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.triple-grid > *,.dual-grid > *{min-width:0;}
/* cards */
.note-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:26px 24px;
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.note-card:hover{transform:translateY(-2px);border-color:rgba(196,101,42,.55);box-shadow:0 6px 14px rgba(18,60,54,.08);}
.note-num{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--orange);}
.note-card h3{margin:10px 0 12px;font-size:19px;line-height:1.5;}
.note-card p{color:var(--muted);font-size:15px;}
.note-list{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px;}
.note-list li{
  position:relative;padding-left:16px;font-size:14px;color:var(--text);line-height:1.8;
}
.note-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--orange);}
/* knowledge list */
.knowledge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.knowledge-card{
  display:flex;flex-direction:column;min-width:0;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card);
  padding:22px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.knowledge-card:hover{transform:translateY(-2px);border-color:rgba(196,101,42,.6);box-shadow:0 6px 14px rgba(18,60,54,.08);}
.knowledge-card .k-tag{margin-bottom:14px;}
.knowledge-card h3{font-size:18px;line-height:1.55;margin-bottom:10px;font-family:var(--serif);}
.knowledge-card h3 a{color:var(--ink);}
.knowledge-card h3 a:hover{color:var(--orange);}
.knowledge-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.card-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted);
}
.meta-time{font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.02em;}
.read-more{color:var(--ink);font-weight:600;white-space:nowrap;}
.read-more:hover{color:var(--orange);}
.empty-note{
  border:1px dashed var(--line);border-radius:var(--radius);background:#fff;
  padding:34px 24px;text-align:center;color:var(--muted);font-size:15px;
}
.list-more{margin-top:32px;display:flex;justify-content:center;}
/* picks */
.pick-list{display:grid;gap:0;border-top:1px solid var(--line);}
.pick-item{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.pick-thumb{
  aspect-ratio:16/10;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,#EFEADF 0%,#E7E0D2 100%);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:22px;color:rgba(18,60,54,.42);letter-spacing:.1em;
}
.pick-body h3{font-size:19px;line-height:1.55;margin-bottom:8px;}
.pick-body h3 a{color:var(--ink);}
.pick-body h3 a:hover{color:var(--orange);}
.pick-body p{font-size:14.5px;color:var(--muted);}
.pick-meta{display:flex;gap:14px;align-items:center;margin-top:12px;font-size:13px;color:var(--muted);}
/* glossary */
.gloss-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:22px 22px 18px;
  transition:border-color .18s ease,transform .18s ease;
}
.gloss-card:hover{border-color:rgba(196,101,42,.55);transform:translateY(-2px);}
.gloss-card dt{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.gloss-card dd{font-size:14.5px;color:var(--muted);line-height:1.8;}
.gloss-card .gloss-link{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--orange);border-bottom:1px solid var(--orange);}
/* path */
.path-list{position:relative;margin:0 0 0 8px;padding-left:34px;border-left:1px solid var(--line);}
.path-item{position:relative;padding:0 0 30px;}
.path-item:last-child{padding-bottom:0;}
.path-item::before{
  content:"";position:absolute;left:-40px;top:8px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--orange);
}
.path-item h3{font-size:18px;margin-bottom:8px;display:flex;gap:12px;align-items:baseline;flex-wrap:wrap;}
.path-num{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--orange);}
.path-item p{font-size:14.5px;color:var(--muted);max-width:720px;}
/* checklist */
.check-list{display:grid;gap:12px;}
.check-item{
  display:flex;align-items:flex-start;gap:14px;padding:16px 18px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);transition:border-color .18s ease,background .18s ease;
}
.check-item:hover{border-color:rgba(18,60,54,.35);}
.check-item input[type="checkbox"]{
  width:18px;height:18px;margin-top:5px;flex:0 0 auto;accent-color:var(--ink);cursor:pointer;
}
.check-item span{font-size:15px;color:var(--text);line-height:1.75;}
.check-tip{margin-top:20px;font-size:13.5px;color:var(--muted);}
/* download */
.download-row{margin-top:4px;}
.dl-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:26px 22px;display:flex;flex-direction:column;
  border-left:3px solid var(--line);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.dl-card:hover{transform:translateY(-2px);border-left-color:var(--orange);box-shadow:0 6px 14px rgba(18,60,54,.08);}
.dl-icon{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);
  font-size:13px;color:var(--ink);background:var(--paper);margin-bottom:16px;
}
.dl-card h3{font-size:18px;margin-bottom:6px;}
.dl-card .dl-format{font-family:var(--mono);font-size:13px;color:var(--muted);margin-bottom:18px;}
.dl-card .btn{margin-top:auto;width:100%;}
/* faq */
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-card);
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-family:var(--mono);font-size:20px;line-height:1;color:var(--orange);flex:0 0 auto;}
.faq-item[open] summary::after{content:"–";}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;border-top:1px dashed var(--line);padding-top:16px;}
/* cta */
.cta-band{padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-text h2{font-size:clamp(22px,2.8vw,30px);color:#fff;line-height:1.4;}
.cta-text p{margin-top:10px;font-size:15px;color:rgba(243,240,231,.74);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-actions .btn{min-width:150px;}
/* footer */
.site-footer{background:var(--ink-deep);color:var(--inverse);padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:32px;}
.footer-brand .f-name{font-family:var(--serif);font-size:22px;font-weight:700;color:#fff;margin-bottom:12px;}
.footer-brand p{font-size:14px;color:rgba(243,240,231,.7);line-height:1.85;}
.footer-col h4{font-family:var(--sans);font-size:14px;font-weight:600;color:var(--gold);letter-spacing:.08em;margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:rgba(243,240,231,.78);}
.footer-col ul li a:hover{color:#fff;border-bottom:1px solid var(--orange);}
.footer-col p{font-size:13.5px;color:rgba(243,240,231,.66);line-height:1.85;}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(243,240,231,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(243,240,231,.6);
}
/* responsive */
@media (max-width:1024px){
  .header-bar{gap:16px;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--ink-deep);flex-direction:column;align-items:stretch;gap:0;
    padding:92px 22px 28px;margin-left:0;transform:translateX(100%);
    transition:transform .26s ease;z-index:60;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav a{
    color:var(--inverse);padding:14px 0;border-bottom:1px solid rgba(243,240,231,.14);
    font-size:16px;min-height:48px;display:flex;align-items:center;
  }
  .main-nav a:hover{color:var(--gold);}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{color:var(--gold);font-weight:600;}
  .header-actions{margin-left:auto;gap:8px;}
  .header-actions .btn{padding:9px 14px;font-size:13px;}
  .nav-toggle{display:flex;}
  .notice-text{gap:24px;overflow-x:auto;scrollbar-width:none;}
  .notice-text::-webkit-scrollbar{display:none;}
  .site-section{padding:56px 0;}
  .triple-grid,.dual-grid,.knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .brand-sub{display:none;}
  .brand-divider{display:none;}
  .page-head{padding:34px 0 30px;}
  .pick-item{grid-template-columns:minmax(0,1fr);gap:16px;}
  .pick-thumb{max-width:280px;aspect-ratio:16/10;}
  .sec-head{margin-bottom:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 180px;}
}
@media (max-width:640px){
  .grid-container.site-container{padding-left:18px;padding-right:18px;}
  .triple-grid,.dual-grid,.knowledge-grid{grid-template-columns:minmax(0,1fr);}
  .site-section{padding:40px 0;}
  .header-actions .btn-outline-orange{padding:8px 10px;font-size:12px;}
  .ba-long{display:none;}
  .ba-short{display:inline;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;gap:8px;}
  .path-list{padding-left:26px;}
  .path-item::before{left:-32px;}
  .cta-actions .btn{width:100%;min-height:44px;}
}