/* roulang page: index */
:root{
  --c-ink:#131A38;
  --c-ink-2:#38415F;
  --c-muted:#6B7590;
  --c-line:#E4E9F4;
  --c-bg:#F5F8FD;
  --c-surface:#FFFFFF;
  --c-brand:#2B3A8F;
  --c-brand-deep:#1E2A6B;
  --c-brand-soft:#E9EDFB;
  --c-accent:#E99A2E;
  --c-accent-soft:#FDF1DC;
  --c-teal:#2E9E9A;
  --c-teal-soft:#E2F4F3;
  --c-violet:#6E5BE8;
  --c-ok:#2E8B57;
  --c-warn:#C97A16;
  --c-err:#C0463C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,21,51,.06),0 10px 24px -14px rgba(16,21,51,.20);
  --shadow-2:0 24px 56px -26px rgba(16,21,51,.34);
  --space-section:88px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink-2);
  background:var(--c-bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-brand);text-decoration:none}
a:hover{color:var(--c-brand-deep)}
button{font-family:inherit}
h1,h2,h3,h4,p,dl,dd,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-ink)}
::selection{background:var(--c-brand-soft);color:var(--c-brand-deep)}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--c-brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{background:var(--c-brand-soft);border-color:var(--c-brand);color:var(--c-brand-deep)}
.btn-light{background:var(--c-surface);color:var(--c-brand-deep);border-color:transparent}
.btn-light:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{font-size:14px;font-weight:600;color:var(--c-brand);padding-bottom:2px;border-bottom:2px solid transparent;transition:border-color .18s ease,color .18s ease}
.link-more:hover{border-color:var(--c-brand);color:var(--c-brand-deep)}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge .dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.badge-brand{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.badge-brand .dot{background:var(--c-brand)}
.badge-accent{background:var(--c-accent-soft);color:#9A6413}
.badge-accent .dot{background:var(--c-accent)}
.badge-teal{background:var(--c-teal-soft);color:#1F6F6C}
.badge-teal .dot{background:var(--c-teal)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-brand);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.02em}
.logo-sub{font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.04em}
.nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 16px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-brand-deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;
  border-radius:var(--radius-pill);background:var(--c-teal-soft);color:#1F6F6C;
  font-size:12px;font-weight:600;
}
.status-badge .dot{width:10px;height:10px;border-radius:50%;background:var(--c-teal)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--c-line);background:var(--c-surface);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle:hover{border-color:var(--c-brand)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--c-surface);
  display:flex;flex-direction:column;padding:20px 24px 32px;
  transform:translateX(100%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--c-line);
  background:var(--c-surface);font-size:20px;color:var(--c-ink);cursor:pointer;line-height:1;
}
.drawer-close:hover{border-color:var(--c-brand);color:var(--c-brand)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;height:56px;font-size:16px;font-weight:500;
  color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-brand);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}

/* ---------- hero ---------- */
.hero{padding:56px 0 72px}
.hero-grid{display:grid;grid-template-columns:58fr 42fr;gap:56px;align-items:center;min-height:560px}
.hero-copy{display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.eyebrow{font-size:13px;font-weight:600;color:var(--c-brand);letter-spacing:.14em;margin-bottom:10px}
h1{
  font-size:clamp(30px,4vw,46px);line-height:1.18;letter-spacing:-.02em;
  font-weight:700;color:var(--c-ink);
}
.hero-sub{font-size:17px;line-height:1.7;color:var(--c-ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}
.hero-kv{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;width:100%;
  margin-top:12px;padding-top:22px;border-top:1px solid var(--c-line);
}
.hero-kv dt{font-size:12px;color:var(--c-muted);margin-bottom:4px;letter-spacing:.02em}
.hero-kv dd{font-size:16px;font-weight:600;color:var(--c-ink);font-variant-numeric:tabular-nums}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;background:var(--c-brand-soft);box-shadow:var(--shadow-2);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-tag{
  position:absolute;right:14px;bottom:14px;display:inline-flex;align-items:center;gap:7px;
  height:30px;padding:0 12px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.94);color:var(--c-brand-deep);
  font-size:12px;font-weight:600;box-shadow:var(--shadow-1);
  font-variant-numeric:tabular-nums;
}
.figure-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-teal)}

/* ---------- section base ---------- */
.section{padding:var(--space-section) 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px}
.section-head h2,.block h2{font-size:30px;line-height:1.25;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.section-desc{font-size:15px;line-height:1.75;color:var(--c-muted);max-width:38em}

/* ---------- ladder ---------- */
.ladder{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding-top:34px;
}
.ladder::before{
  content:"";position:absolute;left:0;right:0;top:10px;height:2px;background:var(--c-line);border-radius:2px;
}
.ladder-step{
  position:relative;display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.ladder-step::before{
  content:"";position:absolute;top:-30px;left:22px;width:12px;height:12px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-brand);
}
.ladder-step:nth-child(1){min-height:296px}
.ladder-step:nth-child(2){min-height:304px}
.ladder-step:nth-child(3){min-height:312px}
.ladder-step:nth-child(4){min-height:320px}
.ladder-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.ladder-step.is-current{border-color:var(--c-brand);box-shadow:var(--shadow-2)}
.ladder-step.is-locked{opacity:.7}
.ladder-step.is-locked:hover{transform:none}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;
  border-radius:9px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  font-size:13px;font-weight:700;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step-name{font-size:18px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.step-cond{font-size:13px;line-height:1.6;color:var(--c-muted);margin-bottom:16px}
.step-list{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.step-list li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.6;color:var(--c-ink-2);
}
.step-list li::before{
  content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:2px;
  background:var(--c-violet);opacity:.8;
}
.step-foot{margin-top:auto}
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:600}
.tag-open{background:var(--c-teal-soft);color:#1F6F6C}
.tag-run{background:var(--c-accent-soft);color:#9A6413}
.tag-wait{background:#EEF1F7;color:var(--c-muted)}

/* ---------- compare table ---------- */
.compare-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.compare{width:100%;border-collapse:collapse;min-width:760px;font-size:14px}
table.compare th,table.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--c-line)}
table.compare thead th{background:var(--c-bg);font-size:15px;font-weight:600;color:var(--c-ink)}
table.compare tbody tr{transition:background-color .06s linear}
table.compare tbody tr:hover{background:var(--c-bg)}
table.compare tbody th{
  position:sticky;left:0;background:var(--c-surface);z-index:2;
  font-weight:600;color:var(--c-ink-2);white-space:nowrap;font-size:14px;
}
table.compare tbody tr:hover th{background:var(--c-bg)}
table.compare td{color:var(--c-ink-2)}
.col-reco{background:var(--c-brand-soft)!important;position:relative}
thead .col-reco{background:var(--c-brand)!important;color:#fff!important;border-top-left-radius:0}
.col-reco-flag{
  display:inline-block;margin-left:8px;height:20px;line-height:20px;padding:0 8px;
  border-radius:var(--radius-pill);background:var(--c-accent);color:#3B2A05;
  font-size:11px;font-weight:700;vertical-align:middle;
}
table.compare tfoot td,table.compare tfoot th{padding:20px 18px;border-bottom:none;text-align:center}
table.compare tfoot th{text-align:left;position:sticky;left:0;background:var(--c-surface);z-index:2}
.scroll-hint{display:none;font-size:12px;color:var(--c-muted);padding:10px 18px;border-top:1px solid var(--c-line);text-align:center}

/* ---------- open bar ---------- */
.open-bar{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background:var(--c-brand-deep);color:#fff;padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.open-bar::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:18px 18px;pointer-events:none;
}
.open-bar-left{position:relative;display:flex;flex-direction:column;gap:16px}
.open-bar-title{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.open-bar-title h2{font-size:24px;font-weight:700;color:#fff;letter-spacing:-.01em}
.open-bar-title .tag{background:rgba(255,255,255,.14);color:#fff}
.timer{display:flex;gap:12px}
.timer-cell{
  width:64px;height:64px;border-radius:12px;background:rgba(255,255,255,.10);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
}
.timer-cell b{font-size:28px;line-height:1;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums}
.timer-cell span{font-size:11px;color:rgba(255,255,255,.72);letter-spacing:.04em}
.open-bar-note{position:relative;font-size:13px;color:rgba(255,255,255,.74);max-width:46em;line-height:1.7}
.open-bar-right{position:relative;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);color:inherit;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D3DBEF;color:inherit}
.news-date{
  flex:0 0 64px;width:64px;height:64px;border-radius:12px;background:var(--c-brand-soft);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  color:var(--c-brand-deep);
}
.news-date b{font-size:20px;line-height:1;font-weight:700;font-variant-numeric:tabular-nums}
.news-date span{font-size:11px;color:var(--c-brand);opacity:.8}
.news-body{flex:1;min-width:0}
.news-cat{display:inline-block;font-size:12px;font-weight:600;color:var(--c-brand);background:var(--c-brand-soft);border-radius:var(--radius-pill);padding:0 10px;height:22px;line-height:22px;margin-bottom:8px}
.news-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-title{color:var(--c-brand)}
.news-sum{font-size:13px;line-height:1.65;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--c-muted);margin-top:10px}
.news-arrow{flex:0 0 auto;color:var(--c-muted);font-size:16px;align-self:center;transition:transform .2s ease,color .2s ease}
.news-card:hover .news-arrow{transform:translateX(3px);color:var(--c-brand)}
.news-empty{
  grid-column:1/-1;min-height:180px;border:1px dashed var(--c-line);border-radius:var(--radius-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--c-surface);color:var(--c-muted);font-size:14px;text-align:center;padding:24px;
}

/* ---------- checklist ---------- */
.checklist-grid{display:grid;grid-template-columns:44fr 56fr;gap:56px;align-items:center}
.checklist-figure{border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:var(--c-brand-soft);box-shadow:var(--shadow-1)}
.checklist-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.checklist-body h2{font-size:30px;line-height:1.25;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.checklist-body>.lead{font-size:15px;line-height:1.8;color:var(--c-muted);margin-bottom:24px}
.steps-list{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.steps-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--c-line)}
.steps-list .idx{
  flex:0 0 28px;width:28px;height:28px;border-radius:9px;background:var(--c-brand-soft);
  color:var(--c-brand-deep);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.steps-list strong{display:block;font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:2px}
.steps-list p{font-size:13px;line-height:1.7;color:var(--c-muted)}

/* ---------- version ---------- */
.version-grid{display:grid;grid-template-columns:42fr 58fr;gap:56px;align-items:start}
.version-intro h2{font-size:30px;line-height:1.25;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.version-intro p{font-size:15px;line-height:1.8;color:var(--c-muted);margin-bottom:20px}
.version-figure{border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:var(--c-brand-soft);margin-bottom:22px}
.version-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.version-list{display:flex;flex-direction:column;gap:14px}
.version-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:border-color .18s ease,box-shadow .18s ease;
}
.version-item:hover{border-color:#D3DBEF;box-shadow:var(--shadow-2)}
.version-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.version-no{font-size:16px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums}
.version-date{font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.version-item p{font-size:14px;line-height:1.75;color:var(--c-ink-2)}

/* ---------- faq ---------- */
.faq-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:none}
.faq-item details{transition:background-color .18s ease}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-brand)}
.faq-ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform .22s ease;color:var(--c-brand);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-ico::before{left:0;right:0;top:10px;height:2px}
.faq-ico::after{top:0;bottom:0;left:10px;width:2px}
.faq-item details[open] .faq-ico{transform:rotate(45deg)}
.faq-item details[open] summary{color:var(--c-brand)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:58em}

/* ---------- form ---------- */
.contact-grid{display:grid;grid-template-columns:44fr 56fr;gap:56px;align-items:start}
.contact-info h2{font-size:30px;line-height:1.25;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.contact-info>.lead{font-size:15px;line-height:1.8;color:var(--c-muted);margin-bottom:24px}
.info-list{display:flex;flex-direction:column;gap:14px}
.info-item{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card)}
.info-item .k{font-size:12px;color:var(--c-muted);display:block;margin-bottom:2px}
.info-item .v{font-size:15px;font-weight:600;color:var(--c-ink)}
.info-item .ico{flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--c-brand-soft);color:var(--c-brand);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1)}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-row label{font-size:13px;font-weight:600;color:var(--c-ink)}
.form-row .hint{font-size:12px;color:var(--c-muted)}
.field{
  height:46px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--radius-btn);
  background:var(--c-surface);color:var(--c-ink2);transition:border-color .16s ease,box-shadow .16s ease;
  width:100%;
}
textarea.field{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px var(--c-brand-soft)}
.field.is-error{border-color:var(--c-err)}
.err-text{font-size:12px;color:var(--c-err);display:none}
.err-text.show{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px;font-size:13px;line-height:1.7;color:var(--c-muted)}
.check-row input{margin-top:3px;width:16px;height:16px;accent-color:var(--c-brand);flex:0 0 auto}
.form-ok{
  display:none;margin-bottom:18px;padding:12px 14px;border-radius:var(--radius-btn);
  background:#E8F5EC;color:#1F6B47;font-size:13px;font-weight:500;line-height:1.7;
}
.form-ok.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:var(--space-section)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-main{color:#fff;font-size:17px}
.footer-brand .logo-sub{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:13px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;max-width:30em}
.footer-col h3{font-size:13px;font-weight:600;color:rgba(255,255,255,.55);letter-spacing:.08em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);transition:color .16s ease}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer-contact .k{display:block;font-size:12px;color:rgba(255,255,255,.45);margin-bottom:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.5);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.6);font-size:12px}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{max-width:1080px}
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  :root{--space-section:64px}
  .nav{display:none}
  .nav-toggle{display:flex}
  .status-badge{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0}
  .hero-copy{order:1}
  .hero-visual{order:2}
  .hero-figure img{aspect-ratio:16/9}
  .ladder{grid-template-columns:repeat(2,1fr);padding-top:0}
  .ladder::before{display:none}
  .ladder-step::before{display:none}
  .ladder-step{min-height:0!important}
  .news-grid{grid-template-columns:1fr}
  .checklist-grid,.version-grid,.contact-grid{grid-template-columns:1fr;gap:32px}
  .checklist-figure{order:2}
  .checklist-body{order:1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
}
@media (max-width:820px){
  .open-bar{flex-direction:column;align-items:flex-start;padding:26px}
  .timer{gap:10px;flex-wrap:wrap}
  .timer-cell{width:58px;height:58px}
  .timer-cell b{font-size:24px}
  .scroll-hint{display:block}
  .news-card{padding:16px}
}
@media (max-width:560px){
  :root{--space-section:44px}
  .container{padding:0 18px}
  h1{font-size:30px}
  .section-head h2,.block h2,.checklist-body h2,.version-intro h2,.contact-info h2{font-size:24px}
  .hero{padding:36px 0 44px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch;width:100%}
  .hero-actions .btn{width:100%}
  .hero-kv{grid-template-columns:1fr;gap:12px}
  .ladder{grid-template-columns:1fr}
  .btn{height:44px}
  .form-card{padding:18px}
  .faq-item summary{padding:18px;font-size:15px}
  .faq-answer{padding:0 18px 18px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .news-date{flex-basis:56px;width:56px;height:56px}
  .news-date b{font-size:18px}
  .open-bar-title h2{font-size:20px}
  .version-item{padding:16px}
}

/* roulang page: article */
:root{
  --c-ink:#131A38;
  --c-ink-2:#38415F;
  --c-muted:#6B7590;
  --c-line:#E4E9F4;
  --c-bg:#F5F8FD;
  --c-surface:#FFFFFF;
  --c-brand:#2B3A8F;
  --c-brand-deep:#1E2A6B;
  --c-brand-soft:#E9EDFB;
  --c-accent:#E99A2E;
  --c-accent-soft:#FDF1DC;
  --c-teal:#2E9E9A;
  --c-violet:#6E5BE8;
  --c-ok:#2E8B57;
  --c-warn:#C97A16;
  --c-err:#C0463C;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,21,51,.06),0 10px 24px -14px rgba(16,21,51,.20);
  --shadow-2:0 24px 56px -26px rgba(16,21,51,.34);
  --container:1200px;
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--c-brand-soft);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-brand);color:#fff;
  display:grid;place-items:center;font-size:15px;line-height:1;
  box-shadow:0 6px 14px -8px rgba(43,58,143,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.01em}
.logo-sub{font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.14em}
.nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:68px;padding:0 14px;font-size:14px;font-weight:500;
  color:var(--c-ink-2);transition:color .2s ease;
}
.nav-link:hover{color:var(--c-brand)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:2px;border-radius:2px;background:var(--c-brand);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;color:var(--c-ok);
  background:#EAF6EF;white-space:nowrap;
}
.status-badge .dot{
  width:8px;height:8px;border-radius:50%;background:var(--c-ok);
  box-shadow:0 0 0 3px rgba(46,139,87,.16);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 1px 2px rgba(16,21,51,.10)}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:var(--c-surface);color:var(--c-ink);border:1px solid var(--c-line)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-brand-soft);color:var(--c-brand)}
.btn-light{background:#fff;color:var(--c-brand-deep)}
.btn-light:hover{background:var(--c-brand-soft);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--c-line);background:var(--c-surface);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease}
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:var(--c-surface);
  display:none;flex-direction:column;padding:20px 24px 28px;
}
.mobile-drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:48px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  display:grid;place-items:center;font-size:18px;color:var(--c-ink);
}
.drawer-nav{display:flex;flex-direction:column;margin:18px 0 22px}
.drawer-nav a{
  height:56px;display:flex;align-items:center;
  font-size:16px;font-weight:500;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-brand);font-weight:600}
.drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:auto}
.drawer-cta .btn{width:100%}

/* ---------- hero ---------- */
.article-hero{position:relative;overflow:hidden;background:var(--c-brand-deep);color:#fff}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.28;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(155deg,rgba(30,42,107,.90) 0%,rgba(19,26,56,.95) 100%);
}
.article-hero .container{position:relative;z-index:1;padding-top:32px;padding-bottom:56px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.66)}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .2s ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.36)}
.breadcrumb .current{color:#fff;font-weight:500}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.5;
}
.tag-amber{background:var(--c-accent-soft);color:var(--c-warn)}
.tag-brand{background:var(--c-brand-soft);color:var(--c-brand)}
.tag-teal{background:#E5F5F4;color:var(--c-teal)}
.tag-ghost{background:rgba(255,255,255,.14);color:#fff;font-weight:500}
.article-hero h1{
  margin-top:16px;
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.22;
  letter-spacing:-0.02em;
  font-weight:700;
  color:#fff;
  max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:22px;font-size:13px;color:rgba(255,255,255,.68);
}
.article-meta .divider{width:1px;height:12px;background:rgba(255,255,255,.26)}
.article-meta .meta-cat{color:var(--c-accent);font-weight:600}

/* ---------- layout ---------- */
.article-body-wrap{padding:48px 0 var(--sp-section)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.article-main{max-width:760px;min-width:0}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:38px 36px 34px;
}
.article-lead{
  font-size:16px;line-height:1.8;color:var(--c-ink-2);
  padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid var(--c-line);
}
.rich-text{font-size:17px;line-height:1.85;color:var(--c-ink-2);word-break:break-word}
.rich-text p{margin:0 0 18px}
.rich-text h2{
  font-size:24px;line-height:1.35;font-weight:700;color:var(--c-ink);
  margin:40px 0 16px;letter-spacing:-0.01em;
}
.rich-text h2:first-child{margin-top:0}
.rich-text h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--c-ink);margin:28px 0 12px}
.rich-text h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:22px 0 10px}
.rich-text blockquote{
  margin:0 0 20px;padding:16px 20px;
  border-left:3px solid var(--c-brand);
  background:var(--c-brand-soft);
  border-radius:0 10px 10px 0;
  font-style:italic;color:var(--c-ink-2);
}
.rich-text blockquote p:last-child{margin-bottom:0}
.rich-text ul,.rich-text ol{margin:0 0 18px;padding-left:22px}
.rich-text ul li{list-style:disc;margin-bottom:8px}
.rich-text ol li{list-style:decimal;margin-bottom:8px}
.rich-text li::marker{color:var(--c-brand)}
.rich-text img{
  max-width:100%;height:auto;border-radius:var(--r-img);
  border:1px solid var(--c-line);margin:24px auto;
}
.rich-text figure{margin:24px 0}
.rich-text figcaption{font-size:12px;color:var(--c-muted);text-align:center;margin-top:10px}
.rich-text table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;line-height:1.6}
.rich-text thead th{
  background:var(--c-bg);color:var(--c-ink);font-weight:600;
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--c-line);
}
.rich-text tbody td{padding:12px 14px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2)}
.rich-text a{color:var(--c-brand);font-weight:600;border-bottom:1px solid transparent;transition:border-color .2s ease}
.rich-text a:hover{border-bottom-color:var(--c-brand)}
.rich-text hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.rich-text strong{color:var(--c-ink);font-weight:600}
.rich-text code{
  background:var(--c-bg);border:1px solid var(--c-line);
  border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-brand-deep);
}
.article-empty{
  padding:56px 24px;text-align:center;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:var(--c-bg);
}
.article-empty p{font-size:18px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.article-empty span{display:block;font-size:14px;color:var(--c-muted);margin-bottom:20px}

/* ---------- inline faq ---------- */
.mini-faq{margin-top:44px}
.mini-faq h2{font-size:24px;font-weight:700;color:var(--c-ink);letter-spacing:-0.01em;margin-bottom:6px}
.mini-faq .sub{font-size:14px;color:var(--c-muted);margin-bottom:18px}
.faq-item{border-top:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--c-ink);
  cursor:pointer;list-style:none;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--c-muted);
  transition:transform .25s ease,color .25s ease;line-height:1;
}
.faq-item[open] summary{color:var(--c-brand)}
.faq-item[open] summary::after{content:"+";transform:rotate(45deg);color:var(--c-brand)}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:660px}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:22px;
}
.side-card h2{
  font-size:14px;font-weight:700;color:var(--c-ink);
  letter-spacing:.04em;margin-bottom:14px;
}
.side-facts{display:flex;flex-direction:column;gap:0}
.side-facts li{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 0;font-size:13px;border-bottom:1px solid var(--c-line);
}
.side-facts li:last-child{border-bottom:0;padding-bottom:0}
.side-facts .k{color:var(--c-muted)}
.side-facts .v{color:var(--c-ink);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 10px;border-radius:10px;
  font-size:14px;line-height:1.5;color:var(--c-ink-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-list a:hover{background:var(--c-brand-soft);color:var(--c-brand);transform:translateX(2px)}
.side-list .idx{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;
  background:var(--c-brand-soft);color:var(--c-brand);
  font-size:11px;font-weight:700;display:grid;place-items:center;
  margin-top:2px;
}
.side-list .meta{display:block;font-size:12px;color:var(--c-muted);margin-top:2px}
.side-cta{
  background:linear-gradient(180deg,var(--c-brand) 0%,var(--c-brand-deep) 100%);
  border:0;color:#fff;box-shadow:var(--shadow-2);
}
.side-cta h2{color:#fff;letter-spacing:.04em}
.side-cta p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.78);margin-bottom:16px}
.side-cta .btn{width:100%;height:44px;font-size:14px}
.side-cta .side-note{font-size:12px;color:rgba(255,255,255,.6);margin:12px 0 0}

/* ---------- related cards ---------- */
.related-block{margin-top:44px}
.related-block h2{font-size:24px;font-weight:700;color:var(--c-ink);letter-spacing:-0.01em;margin-bottom:6px}
.related-block .sub{font-size:14px;color:var(--c-muted);margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D3DCF0}
.related-thumb{
  aspect-ratio:16/9;
  background:var(--c-brand-soft);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body{padding:18px 20px 20px}
.related-body h3{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.45;margin-bottom:6px}
.related-body p{font-size:13px;line-height:1.7;color:var(--c-muted);margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body .link{font-size:13px;font-weight:600;color:var(--c-brand)}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-card);margin-top:44px}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(30,42,107,.95),rgba(19,26,56,.92));
}
.cta-band-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:32px;
  color:#fff;
}
.cta-band h2{font-size:22px;font-weight:700;letter-spacing:-0.01em;margin-bottom:8px}
.cta-band p{font-size:14px;color:rgba(255,255,255,.76);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.74);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:rgba(255,255,255,.55)}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);box-shadow:none}
.footer-brand p{font-size:13px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h3{
  font-size:13px;font-weight:600;color:rgba(255,255,255,.52);
  letter-spacing:.08em;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.82);transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:13px;color:rgba(255,255,255,.74);display:flex;gap:10px}
.footer-contact .k{color:rgba(255,255,255,.46);flex:0 0 auto}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.52);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a{color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-bottom .links a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .header-inner{gap:16px}
  .nav-link{padding:0 11px}
  .nav-link.is-active::after{left:11px;right:11px}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .nav,.status-badge{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:60px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .article-main{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:820px){
  .article-hero .container{padding-top:24px;padding-bottom:44px}
  .article-card{padding:26px 20px}
  .rich-text{font-size:16px;line-height:1.8}
  .rich-text h2{font-size:21px;margin-top:32px}
  .rich-text h3{font-size:18px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band-inner{padding:26px 22px}
  .side-col{flex-direction:column}
  .side-card{flex:1 1 auto;width:100%}
}
@media (max-width:560px){
  :root{--sp-section:44px}
  .container{padding:0 18px}
  .logo-main{font-size:15px}
  .logo-sub{font-size:10px;letter-spacing:.1em}
  .header-right .btn{display:none}
  .article-hero h1{font-size:26px}
  .article-meta{font-size:12px;gap:10px}
  .article-card{padding:22px 18px}
  .article-body-wrap{padding-top:32px}
  .btn{height:44px;padding:0 20px;font-size:14px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .related-body{padding:16px}
  .rich-text table{display:block;overflow-x:auto;white-space:nowrap}
}

/* roulang page: category1 */
:root{
  --c-ink:#131A38;--c-ink-2:#38415F;--c-muted:#6B7590;--c-line:#E4E9F4;
  --c-bg:#F5F8FD;--c-surface:#FFFFFF;
  --c-brand:#2B3A8F;--c-brand-deep:#1E2A6B;--c-brand-soft:#E9EDFB;
  --c-accent:#E99A2E;--c-accent-soft:#FDF1DC;
  --c-teal:#2E9E9A;--c-violet:#6E5BE8;
  --c-ok:#2E8B57;--c-warn:#C97A16;--c-err:#C0463C;
  --r-card:14px;--r-btn:10px;--r-img:12px;--r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,21,51,.06),0 10px 24px -14px rgba(16,21,51,.20);
  --shadow-2:0 24px 56px -26px rgba(16,21,51,.34);
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink-2);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:3px solid rgba(43,58,143,.38);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:stretch;height:68px;gap:12px}
.logo{display:inline-flex;align-items:center;gap:10px;align-self:center;flex:0 0 auto}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--c-brand);color:#fff;display:grid;place-items:center;font-size:16px;line-height:1}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--c-muted);letter-spacing:.06em}
.nav{display:flex;align-items:stretch;gap:2px;margin-left:18px}
.nav-link{display:flex;align-items:center;padding:0 16px;font-size:15px;font-weight:500;color:var(--c-ink-2);position:relative;transition:color .18s ease}
.nav-link:hover{color:var(--c-brand)}
.nav-link.is-active{color:var(--c-brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;background:var(--c-brand);border-radius:2px 2px 0 0}
.hd-right{margin-left:auto;display:flex;align-items:center;gap:14px;align-self:center}
.status-badge{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);background:var(--c-brand-soft);color:var(--c-brand);font-size:12px;font-weight:600;white-space:nowrap}
.status-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-teal);box-shadow:0 0 0 3px rgba(46,158,154,.16)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;white-space:nowrap}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-brand);color:#fff}
.btn-primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-brand-soft);color:var(--c-brand)}
.btn-light{background:#fff;color:var(--c-brand-deep)}
.btn-light:hover{background:#EFF2FD;transform:translateY(-1px);box-shadow:0 18px 40px -22px rgba(0,0,0,.55)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand);transition:color .18s ease}
.link-arrow::after{content:"→";font-size:13px;transition:transform .18s ease}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.tag-brand{background:var(--c-brand-soft);color:var(--c-brand)}
.tag-accent{background:var(--c-accent-soft);color:var(--c-warn)}
.tag-teal{background:#E3F3F2;color:#1F7B78}
.tag-line{background:transparent;color:var(--c-muted);border:1px solid var(--c-line)}

/* ---------- hero ---------- */
.page-hero{position:relative;background:var(--c-brand-deep);color:#fff;overflow:hidden;isolation:isolate}
.page-hero::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;opacity:.30;z-index:-2}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(30,42,107,.97) 0%,rgba(30,42,107,.88) 46%,rgba(30,42,107,.62) 100%);z-index:-1}
.hero-inner{padding:60px 0 48px;max-width:840px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);font-size:12px;font-weight:600;letter-spacing:.08em;color:#E8ECFF}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:block}
.page-hero h1{margin:20px 0 0;font-size:clamp(30px,4vw,46px);line-height:1.18;letter-spacing:-.02em;font-weight:700;color:#fff}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.78);max-width:640px}
.hero-meta{margin-top:32px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;max-width:720px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
.hero-meta .k{display:block;font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.04em}
.hero-meta .v{display:block;margin-top:4px;font-size:16px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums}

/* ---------- anchor bar ---------- */
.anchor-wrap{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.anchor-bar{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:16px 0;scrollbar-width:none}
.anchor-bar::-webkit-scrollbar{display:none}
.anchor-pill{display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-pill);background:var(--c-brand-soft);color:var(--c-brand);font-size:14px;font-weight:600;white-space:nowrap;transition:background .18s ease,color .18s ease,transform .18s ease}
.anchor-pill:hover{transform:translateY(-1px);background:#DDE4F9}
.anchor-pill.is-current{background:var(--c-brand);color:#fff}
.anchor-pill.is-current:hover{background:var(--c-brand-deep)}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0}
.section-alt{padding:var(--sp-section) 0;background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.3;letter-spacing:-.01em;color:var(--c-ink);font-weight:700}
.section-head p{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:640px}
.section-head .head-side{flex:0 0 auto}

/* ---------- guide cards ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.guide-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CCD6EF}
.guide-media{position:relative;aspect-ratio:16/10;background:var(--c-brand-soft);border-bottom:1px solid var(--c-line)}
.guide-media img{width:100%;height:100%;object-fit:cover}
.guide-media .corner{position:absolute;top:12px;right:12px}
.guide-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.guide-body h3{font-size:20px;line-height:1.4;color:var(--c-ink);font-weight:600}
.guide-body p{font-size:14px;line-height:1.7;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.guide-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:14px;border-top:1px dashed var(--c-line)}

/* ---------- spec board ---------- */
.spec-board{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:8px 28px 24px;box-shadow:var(--shadow-1)}
.spec-group{padding-top:20px}
.spec-group + .spec-group{border-top:1px solid var(--c-line);margin-top:12px}
.spec-group > h3{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--c-muted);padding-bottom:6px}
.spec-group dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:48px}
.spec-group dl > div{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:48px;border-bottom:1px dashed var(--c-line)}
.spec-group dl > div:last-child{border-bottom:0}
.spec-group dt{font-size:14px;color:var(--c-muted);flex:0 0 auto}
.spec-group dd{font-size:15px;font-weight:600;color:var(--c-ink);text-align:right;font-variant-numeric:tabular-nums}
.spec-note{margin-top:22px;padding:16px 18px;border-radius:12px;background:var(--c-brand-soft);color:var(--c-brand);font-size:14px;line-height:1.7}

/* ---------- checklist strip ---------- */
.check-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.check-item{display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;padding:20px 22px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease}
.check-item:hover{border-color:#CCD6EF;transform:translateY(-2px)}
.check-num{flex:0 0 auto;width:32px;height:32px;border-radius:9px;background:var(--c-brand-soft);color:var(--c-brand);font-size:13px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums}
.check-item h3{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5}
.check-item p{margin-top:6px;font-size:13px;line-height:1.7;color:var(--c-muted)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--c-line);max-width:960px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;cursor:pointer;font-size:17px;font-weight:600;color:var(--c-ink);transition:color .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-brand)}
.faq-item[open] summary{color:var(--c-brand)}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-brand);border-radius:2px;transition:transform .22s ease}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg)}
.faq-answer{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:820px}
.faq-answer a{color:var(--c-brand);font-weight:600}
.faq-answer a:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-brand-deep);color:#fff;border-radius:var(--r-card);padding:42px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 12% 28%,rgba(255,255,255,.55) 0 1px,transparent 1.6px),
                   radial-gradient(circle at 68% 72%,rgba(255,255,255,.45) 0 1px,transparent 1.6px),
                   radial-gradient(circle at 88% 22%,rgba(255,255,255,.40) 0 1px,transparent 1.6px);
  background-size:180px 180px,220px 220px,260px 260px;opacity:.55}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:26px;line-height:1.35;color:#fff;font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.74);max-width:560px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:var(--c-brand-deep);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:var(--sp-section)}
.footer-grid{display:grid;grid-template-columns:1.6fr .8fr .8fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-mark{background:rgba(255,255,255,.14)}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:rgba(255,255,255,.6)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.55);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.82);transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.82);display:flex;gap:10px;flex-wrap:wrap}
.footer-contact .k{font-size:12px;color:rgba(255,255,255,.5);min-width:56px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.58)}
.footer-bottom .links{display:flex;gap:18px}
.footer-bottom a:hover{color:#fff}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:120;background:var(--c-surface);display:flex;flex-direction:column;padding:20px 24px 28px;transform:translateX(100%);transition:transform .26s ease;visibility:hidden}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--c-line)}
.drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);font-size:22px;line-height:1;color:var(--c-ink);display:grid;place-items:center}
.drawer-close:hover{background:var(--c-brand-soft);color:var(--c-brand)}
.drawer-nav{display:flex;flex-direction:column;margin-top:10px}
.drawer-nav a{display:flex;align-items:center;height:56px;font-size:16px;font-weight:500;color:var(--c-ink-2);border-bottom:1px solid var(--c-line)}
.drawer-nav a.is-active{color:var(--c-brand);font-weight:600}
.drawer-cta{margin-top:24px;width:100%}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{max-width:1120px}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .nav{margin-left:8px}
  .nav-link{padding:0 12px;font-size:14px}
  .section-head h2{font-size:26px}
  .spec-group dl{grid-template-columns:1fr;column-gap:0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:860px){
  .guide-grid{grid-template-columns:1fr}
  .check-strip{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:820px){
  .nav{display:none}
  .nav-toggle{display:flex}
  .status-badge{display:none}
  .header-inner{height:60px}
  .hero-inner{padding:44px 0 36px}
  .hero-meta{grid-template-columns:1fr;gap:14px;margin-top:26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .spec-board{padding:4px 18px 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .site-footer{margin-top:var(--sp-section);padding-top:48px}
}
@media (max-width:560px){
  :root{--sp-section:44px}
  .container{padding:0 18px}
  .hd-right .btn-sm{display:none}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .section-head h2{font-size:24px}
  .guide-body{padding:18px}
  .guide-body h3{font-size:18px}
  .check-item{padding:18px}
  .cta-band h2{font-size:22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .btn{height:44px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category2 */
:root{
  --c-ink:#131A38;
  --c-ink-2:#38415F;
  --c-muted:#6B7590;
  --c-line:#E4E9F4;
  --c-bg:#F5F8FD;
  --c-surface:#FFFFFF;
  --c-brand:#2B3A8F;
  --c-brand-deep:#1E2A6B;
  --c-brand-soft:#E9EDFB;
  --c-accent:#E99A2E;
  --c-accent-soft:#FDF1DC;
  --c-teal:#2E9E9A;
  --c-violet:#6E5BE8;
  --c-ok:#2E8B57;
  --c-warn:#C97A16;
  --c-err:#C0463C;
  --shadow-1:0 1px 2px rgba(16,21,51,.06),0 10px 24px -14px rgba(16,21,51,.20);
  --shadow-2:0 24px 56px -26px rgba(16,21,51,.34);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-brand-deep);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:28px;height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:none;}
.logo:hover{color:var(--c-ink);}
.logo-mark{
  width:34px;height:34px;flex:none;display:grid;place-items:center;
  border-radius:10px;background:var(--c-brand);color:#fff;font-size:17px;
  box-shadow:0 6px 16px -8px rgba(43,58,143,.8);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);}
.logo-sub{font-size:11px;color:var(--c-muted);letter-spacing:.06em;margin-top:3px;}
.nav{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:transparent;border-radius:2px;transition:background .18s ease;
}
.nav-link:hover{color:var(--c-brand);}
.nav-link:hover::after{background:var(--c-brand-soft);}
.nav-link.is-active{color:var(--c-brand);font-weight:600;}
.nav-link.is-active::after{background:var(--c-brand);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand);
  font-size:12px;font-weight:500;white-space:nowrap;
}
.status-badge .dot{
  width:7px;height:7px;border-radius:50%;background:var(--c-teal);
  box-shadow:0 0 0 3px rgba(46,158,154,.16);
}
.status-badge.is-warm{background:var(--c-accent-soft);color:#96601A;}
.status-badge.is-warm .dot{background:var(--c-accent);box-shadow:0 0 0 3px rgba(233,154,46,.18);}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* drawer */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--c-surface);
  display:flex;flex-direction:column;padding:20px 24px 32px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line);}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);font-size:20px;cursor:pointer;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;margin:12px 0 auto;}
.drawer-nav a{
  display:flex;align-items:center;height:56px;font-size:17px;font-weight:500;
  color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-brand);font-weight:600;}
.drawer-cta{width:100%;margin-top:26px;}
.drawer-note{font-size:13px;color:var(--c-muted);margin-top:14px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 8px 20px -14px rgba(43,58,143,.9);}
.btn-primary:hover{background:var(--c-brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-brand);background:var(--c-brand-soft);color:var(--c-brand);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-light{background:#fff;color:var(--c-brand-deep);}
.btn-light:hover{background:#fff;color:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-light:active{transform:none;box-shadow:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;
  font-size:14px;font-weight:600;color:var(--c-brand);background:none;border:0;
}
.btn-text:hover{color:var(--c-brand-deep);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--c-brand-deep);
  color:#fff;padding:60px 0 84px;
}
.hero-media{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero-stars{
  position:absolute;inset:0;opacity:.3;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:28px 28px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(19,26,56,.94) 0%,rgba(30,42,107,.86) 58%,rgba(43,58,143,.72) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  font-size:12px;letter-spacing:.06em;color:#fff;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4vw,46px);
  line-height:1.18;letter-spacing:-.02em;font-weight:700;color:#fff;
}
.hero-lead{
  margin-top:18px;max-width:540px;
  font-size:17px;line-height:1.8;color:rgba(255,255,255,.80);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-meta .k{display:block;font-size:12px;color:rgba(255,255,255,.58);letter-spacing:.04em;}
.hero-meta .v{display:block;font-size:16px;font-weight:600;color:#fff;margin-top:5px;}
.hero-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.06);
  box-shadow:var(--shadow-2);
}
.hero-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  background:var(--c-brand-soft);
}
.hero-float{
  position:absolute;right:14px;bottom:14px;
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 12px;border-radius:var(--r-pill);
  background:rgba(19,26,56,.82);border:1px solid rgba(255,255,255,.24);
  font-size:12px;font-weight:500;color:#fff;backdrop-filter:blur(4px);
}
.hero-float .dot{width:6px;height:6px;border-radius:50%;background:var(--c-teal);}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.is-tight{padding:64px 0;}
.section-head{max-width:720px;}
.section-label{
  display:inline-block;font-size:12px;letter-spacing:.14em;
  color:var(--c-brand);font-weight:600;text-transform:uppercase;
}
.section-title{
  margin-top:12px;font-size:30px;line-height:1.32;color:var(--c-ink);
  font-weight:700;letter-spacing:-.01em;
}
.section-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:640px;}

/* ---------- stats panel ---------- */
.stats-panel{
  position:relative;z-index:3;margin-top:-48px;
  background:var(--c-surface);border-radius:var(--r-card);
  border:1px solid var(--c-line);box-shadow:var(--shadow-2);
  padding:28px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat{padding-left:18px;border-left:1px solid var(--c-line);}
.stat:first-child{padding-left:0;border-left:0;}
.stat .k{font-size:12px;color:var(--c-muted);letter-spacing:.04em;}
.stat .v{margin-top:8px;font-size:24px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;}
.stat .v small{font-size:13px;font-weight:500;color:var(--c-muted);margin-left:4px;}
.stat .tagline{margin-top:8px;font-size:13px;color:var(--c-muted);}

/* ---------- tag ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:500;line-height:1.6;
  background:var(--c-brand-soft);color:var(--c-brand);
}
.tag.is-teal{background:rgba(46,158,154,.12);color:#1F7C79;}
.tag.is-warm{background:var(--c-accent-soft);color:#96601A;}
.tag.is-plain{background:var(--c-bg);color:var(--c-muted);border:1px solid var(--c-line);}
.tag .dot{width:6px;height:6px;border-radius:50%;background:currentColor;}

/* ---------- timeline ---------- */
.timeline-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;margin-top:44px;align-items:start;}
.timeline{position:relative;}
.step{position:relative;padding-left:66px;padding-bottom:28px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:19px;top:42px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--c-line),rgba(228,233,244,.35));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--c-surface);color:var(--c-brand);
  border:1px solid #D6DEF7;font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-1);
}
.step.is-current .step-num{background:var(--c-brand);color:#fff;border-color:var(--c-brand);}
.step-body{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DEF7;}
.step-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.step-title{font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.5;}
.step-text{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-ink-2);}
.step-list{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.step-list li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:var(--c-muted);
}
.step-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-soft);border:1px solid var(--c-brand);
}

/* side card */
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.side-card + .side-card{margin-top:20px;}
.side-card h3{font-size:16px;font-weight:600;color:var(--c-ink);}
.side-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-muted);}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.side-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding-bottom:10px;border-bottom:1px dashed var(--c-line);
  font-size:13px;color:var(--c-ink-2);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list .k{color:var(--c-muted);}
.side-list .v{font-weight:600;color:var(--c-ink);white-space:nowrap;font-variant-numeric:tabular-nums;}
.side-card .btn{width:100%;margin-top:18px;}
.side-note{
  margin-top:16px;padding:14px 16px;border-radius:var(--r-btn);
  background:var(--c-accent-soft);color:#8A5A15;font-size:13px;line-height:1.75;
}

/* ---------- faq ---------- */
.faq-wrap{margin-top:40px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 44px;}
.faq-group-title{
  font-size:13px;letter-spacing:.14em;color:var(--c-muted);
  font-weight:600;text-transform:uppercase;
  padding-bottom:12px;border-bottom:1px solid var(--c-line);
}
.faq-list{margin-top:4px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--c-ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-brand);}
.faq-ico{
  flex:none;position:relative;width:20px;height:20px;margin-top:3px;
  transition:transform .26s ease;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--c-brand);border-radius:2px;
}
.faq-ico::before{left:0;top:9px;width:20px;height:2px;}
.faq-ico::after{left:9px;top:0;width:2px;height:20px;transition:opacity .26s ease;}
.faq-item.is-open .faq-ico{transform:rotate(45deg);}
.faq-item.is-open .faq-q{color:var(--c-brand);}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .28s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{
  overflow:hidden;
  font-size:15px;line-height:1.85;color:var(--c-muted);
}
.faq-a-inner p{padding-bottom:18px;}

/* ---------- link cards ---------- */
.link-cards{margin-top:40px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.link-card{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  color:inherit;
}
.link-card:hover{
  transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DEF7;color:inherit;
}
.link-card:hover .link-title{color:var(--c-brand);}
.link-thumb{
  width:88px;height:88px;flex:none;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-brand-soft);
}
.link-thumb img{width:100%;height:100%;object-fit:cover;}
.link-body{min-width:0;}
.link-title{font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;transition:color .18s ease;}
.link-desc{
  margin-top:6px;font-size:13px;line-height:1.7;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.link-foot{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap;}
.link-arrow{margin-left:auto;font-size:14px;color:var(--c-brand);font-weight:600;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-brand-deep);color:#fff;
  border-radius:var(--r-card);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px);
  background-size:22px 22px;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:26px;line-height:1.35;font-weight:700;color:#fff;letter-spacing:-.01em;}
.cta-band p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.76);max-width:520px;}
.cta-band .btn-group{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-brand-deep);color:rgba(255,255,255,.76);
  padding:60px 0 0;margin-top:88px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.55);}
.footer-brand .logo-mark{background:#fff;color:var(--c-brand);box-shadow:none;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:340px;}
.footer-col h3{
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:rgba(255,255,255,.52);margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.76);}
.footer-col a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.76);}
.footer-contact .k{color:rgba(255,255,255,.50);flex:none;min-width:64px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12px;color:rgba(255,255,255,.56);
}
.footer-bottom .links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-bottom a{color:rgba(255,255,255,.68);font-size:12px;}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 22px;}
}
@media (max-width:1024px){
  .nav,.header-actions .status-badge,.header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .hero{padding:48px 0 76px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-card{max-width:560px;}
  .stats-panel{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stat:nth-child(3){padding-left:0;border-left:0;}
  .timeline-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:64px 0;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:820px){
  .link-cards{grid-template-columns:1fr;}
  .cta-band{padding:32px 26px;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  body{font-size:15px;}
  .header-inner{height:60px;}
  .logo-main{font-size:16px;}
  .logo-sub{font-size:10px;}
  .hero{padding:36px 0 64px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;height:44px;}
  .hero-meta{grid-template-columns:1fr;gap:14px;}
  .hero-float{right:10px;bottom:10px;font-size:11px;padding:6px 10px;}
  .stats-panel{padding:20px;margin-top:-36px;grid-template-columns:1fr;gap:16px;}
  .stat{padding-left:0;border-left:0;padding-bottom:14px;border-bottom:1px solid var(--c-line);}
  .stat:last-child{padding-bottom:0;border-bottom:0;}
  .section{padding:44px 0;}
  .section-title{font-size:24px;}
  .step{padding-left:56px;}
  .step-body{padding:18px;}
  .step-title{font-size:16px;}
  .faq-q{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:26px 20px;}
  .cta-band .btn-group{width:100%;}
  .cta-band .btn-group .btn{flex:1 1 100%;height:44px;}
  .link-card{padding:15px;gap:14px;}
  .link-thumb{width:72px;height:72px;}
  .site-footer{margin-top:44px;padding-top:44px;}
}