/* roulang page: index */
:root{
  --bg:#F4F6F1;
  --surface:#FFFFFF;
  --surface-alt:#ECEFE7;
  --ink:#17251C;
  --muted:#64736A;
  --line:#DDE3D9;
  --accent:#CEF45C;
  --accent-ink:#142010;
  --green-deep:#123B29;
  --star:#F5A623;
  --fs-hero:clamp(2.5rem, 5vw, 4.2rem);
  --fs-h2:1.5rem;
  --fs-h3:1.25rem;
  --fs-body:1rem;
  --fs-sm:0.875rem;
  --fs-label:0.75rem;
  --radius-card:18px;
  --radius-pic:12px;
  --radius-hero:24px;
  --shadow-static:0 2px 12px rgba(20,35,25,.05);
  --shadow-hover:0 18px 36px rgba(15,35,22,.12);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container-max:1180px;
}
*::selection{background:var(--accent);color:var(--accent-ink)}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:var(--fs-body);
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{line-height:1.25;margin:0;color:var(--ink)}
h2{font-size:var(--fs-h2);font-weight:700}
h3{font-size:var(--fs-h3);font-weight:600}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
img{max-width:100%;height:auto}
.container{max-width:var(--container-max)}
.btn{font-family:inherit;border-radius:12px;font-weight:600;transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease)}
.btn:focus-visible, .form-control:focus-visible, a:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:2px;
}
.btn-primary{
  --bs-btn-bg:var(--accent);
  --bs-btn-border-color:var(--accent);
  --bs-btn-color:var(--accent-ink);
  --bs-btn-hover-bg:#ddf89b;
  --bs-btn-hover-border-color:#ddf89b;
  --bs-btn-hover-color:var(--accent-ink);
  --bs-btn-active-bg:#c1e34b;
  --bs-btn-active-border-color:#c1e34b;
  --bs-btn-active-color:var(--accent-ink);
  padding:14px 24px;
}
.btn-outline-ink{
  border:1px solid var(--ink);
  color:var(--ink);
  background:transparent;
  padding:13px 22px;
  font-weight:600;
}
.btn-outline-ink:hover{background:var(--surface-alt);border-color:var(--ink);color:var(--ink)}
.btn-light-ghost{
  border:1px solid rgba(255,255,255,.4);
  color:#fff;
  background:rgba(255,255,255,.08);
}
.btn-light-ghost:hover{background:rgba(255,255,255,.15);color:#fff}
.btn-download{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);min-height:58px;padding:16px 30px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:800;box-shadow:0 8px 0 rgba(18,35,20,.1)}
.btn-download:hover{background:#ddf89b;border-color:#ddf89b;color:var(--accent-ink);transform:translateY(-2px)}
.btn-download:active{transform:translateY(3px);box-shadow:0 3px 0 rgba(18,35,20,.1)}
.btn-download-lg{min-width:240px}
.section{padding-block:clamp(64px,9vw,110px);position:relative}
.section-head{margin-bottom:42px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-label);letter-spacing:.12em;font-weight:700;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.section-title{font-size:clamp(1.7rem,3.2vw,2.3rem);font-weight:800}
.section-desc{color:var(--muted);max-width:680px;margin-top:14px;font-size:var(--fs-body)}
.text-muted{color:var(--muted)!important}

/* dock nav */
.dock-nav{
  position:fixed;
  top:14px;
  left:50%;
  transform:translateX(-50%);
  width:min(940px,calc(100% - 28px));
  z-index:1040;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border:1px solid rgba(221,227,217,.9);
  border-radius:999px;
  box-shadow:0 2px 12px rgba(20,35,25,.05);
  transition:box-shadow .25s var(--ease);
}
.dock-nav.scrolled{box-shadow:var(--shadow-hover)}
.dock-inner{
  display:flex;align-items:center;
  justify-content:space-between;
  height:66px;
  padding:0 10px 0 20px;
}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--ink);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-name{font-weight:800;font-size:1.08rem;line-height:1.2;letter-spacing:-.01em;color:var(--ink)}
.brand-name small{display:block;font-size:.68rem;color:var(--muted);letter-spacing:.05em;font-weight:500}
.dock-links{display:flex;align-items:center;gap:2px;margin:0 auto;padding:4px;background:transparent}
.dock-links .nav-link{
  font-size:.92rem;font-weight:600;color:var(--ink);
  padding:10px 18px;border-radius:999px;line-height:1.2;
}
.dock-links .nav-link:hover{background:var(--surface-alt);color:var(--ink)}
.dock-links .nav-link.active,.dock-links .nav-link.active:hover{background:var(--ink);color:var(--accent)}
.dock-cta{display:flex;align-items:center}
.dock-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);font-weight:800;padding:11px 18px;border-radius:999px;border:0}
.dock-btn:hover{background:#ddf89b;color:var(--accent-ink)}
.menu-toggle{
  width:44px;height:44px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  display:none;align-items:center;justify-content:center;color:var(--ink);cursor:pointer;margin-left:8px;
}
.offcanvas{max-width:min(360px,84vw);border:0;border-radius:18px 0 0 18px;background:var(--surface)}
.offcanvas-backdrop.show{opacity:.35}
.offcanvas .brand{padding:18px 20px 12px}
.offcanvas-body{padding:16px 20px 24px}
.offcanvas-body .nav-link{font-size:1.1rem;font-weight:600;padding:14px 12px;border-radius:14px}
.offcanvas-body .nav-link:hover{background:var(--surface-alt)}
.offcanvas-body .nav-link.active{background:var(--ink);color:var(--accent)}
.offcanvas-footer{padding:16px 20px 24px;border-top:1px solid var(--line)}
@media (max-width: 991px){
  .dock-links,.dock-cta .dock-btn{display:none}
  .menu-toggle{display:inline-flex}
  .dock-inner{padding:0 10px 0 16px}
}
@media (min-width:992px){
  .offcanvas{display:none}
}

/* hero */
.home-hero{
  padding:calc(120px + clamp(20px,5vw,80px)) 0 70px;
  position:relative;
  overflow:hidden;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;background:var(--surface);border:1px solid var(--line);
  border-radius:100px;font-size:.8rem;font-weight:600;color:var(--muted);margin-bottom:18px;
  box-shadow:var(--shadow-static);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green-deep)}
.hero-title{font-size:var(--fs-hero);font-weight:800;letter-spacing:-.02em;line-height:1.1;color:var(--ink)}
.hero-title .block{display:inline-block}
.hero-title .lighter{color:var(--muted);font-weight:700;letter-spacing:-.03em}
.hero-lead{color:var(--muted);max-width:540px;font-size:1.13rem;margin:24px 0 32px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:40px;color:var(--muted);font-size:.86rem;font-weight:500}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust svg{color:var(--green-deep)}
.hero-figure{position:relative}
.hero-image-wrap{
  border-radius:var(--radius-hero);overflow:hidden;background:var(--line);
  box-shadow:var(--shadow-hover);
}
.hero-image-wrap img{width:100%;aspect-ratio:4/5;object-fit:cover}
.float-card{
  position:absolute;left:-20px;bottom:30px;background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:16px;padding:16px 22px;box-shadow:var(--shadow-hover);
  min-width:230px;
}
.float-card .value{font-weight:800;font-size:1.25rem;letter-spacing:-.01em}
.float-card .meta{color:var(--muted);font-size:.78rem;margin-top:4px}
.float-card .line{display:flex;gap:12px;margin-top:8px}
.float-card .line span{font-size:.8rem;color:var(--muted)}
@media(max-width:767px){
  .home-hero{padding-top:130px}
  .float-card{left:0}
}

/* stats */
.stat-strip{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-static);padding:26px 26px}
.stat-item{text-align:center;padding:8px 10px;position:relative}
@media(min-width:768px){
  .stat-item+.stat-item::before{content:"";position:absolute;left:0;top:18%;bottom:18%;width:1px;background:var(--line)}
}
.stat-num{font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:800;color:var(--green-deep);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-label{font-weight:700;margin-top:4px;font-size:.96rem}
.stat-desc{color:var(--muted);font-size:.8rem;line-height:1.6}

/* category cards */
.cat-card{
  border-radius:var(--radius-card);background:var(--surface);border:1px solid var(--line);
  overflow:hidden;display:flex;flex-direction:column;height:100%;box-shadow:var(--shadow-static);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#ccd6c9}
.cat-img{aspect-ratio:16/10;overflow:hidden;position:relative;background:var(--surface-alt)}
.cat-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.cat-card:hover .cat-img img{transform:scale(1.03)}
.cat-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.cat-body h3{margin-bottom:8px}
.cat-body p{color:var(--muted);font-size:.93rem;flex:1}
.cat-text-link{color:var(--ink);font-weight:700;display:inline-flex;align-items:center;gap:8px;font-size:.9rem}
.cat-text-link svg{transition:transform .2s var(--ease)}
.cat-text-link:hover{color:var(--green-deep)}
.cat-text-link:hover svg{transform:translateX(4px)}

/* soft intro modules */
.module-soft{background:var(--green-deep);color:#fff;border-radius:24px;overflow:hidden;position:relative}
.module-soft .contents{padding:clamp(28px,5vw,70px)}
.module-soft .contents h2{color:#fff}
.module-soft .contents .eyebrow{color:#c9dccd}
.module-soft p.desc{color:rgba(255,255,255,.72);max-width:520px}
.module-soft .title{color:#fff;font-size:1.35rem;font-weight:700;margin-bottom:10px}
.module-soft .title a,.module-soft .title a:hover{color:#fff}
.step-item{border-top:1px solid rgba(255,255,255,.14);padding:18px 0}
.step-item:last-child{border-bottom:1px solid rgba(255,255,255,.14)}
.step-index{font-weight:800;font-size:1.05rem;color:var(--accent);font-variant-numeric:tabular-nums}
.module-soft .desc{color:rgba(255,255,255,.72);font-size:.92rem;margin-bottom:26px}
.module-soft-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);padding:12px 22px;border-radius:12px;font-weight:700}
.module-soft-btn:hover{background:#ddf89b;color:var(--accent-ink)}
.soft-visual{min-height:260px}
.soft-visual img{width:100%;height:100%;object-fit:cover}
.soft-visual-wrap{position:relative;overflow:hidden}
@media(min-width:992px){
  .module-soft .soft-visual{min-height:500px}
}

/* feature icon row */
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.feature-point{display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);padding:22px;border-radius:16px;transition:transform .2s var(--ease), border-color .2s var(--ease)}
.feature-point:hover{transform:translateY(-3px);border-color:#c9d4c7}
.feature-point.icon{color:var(--green-deep)}
.feature-point h3{font-size:1.02rem;margin-bottom:4px}
.feature-point p{color:var(--muted);font-size:.85rem;margin:0}
@media(max-width:767px){.feature-list{grid-template-columns:1fr}}

/* sysreq */
.sysreq-section{background:var(--surface-alt)}
.requirement-tabs{display:flex;gap:2px;background:var(--surface);padding:4px;border-radius:999px;border:1px solid var(--line);width:fit-content}
.req-tab{border:0;background:transparent;padding:10px 22px;border-radius:999px;font-weight:700;color:var(--muted);cursor:pointer}
.req-tab.active{background:var(--ink);color:var(--accent)}
.req-pane{display:none}
.req-pane.active{display:block}
.req-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);height:100%;position:relative;box-shadow:var(--shadow-static)}
.req-card.recommended{border:1px solid var(--green-deep);box-shadow:0 10px 24px rgba(18,59,41,.08)}
.req-ribbon{position:absolute;top:0;right:24px;background:var(--accent);color:var(--accent-ink);font-size:.72rem;font-weight:800;padding:6px 14px;border-radius:0 0 999px 999px}
.req-card-header{padding:28px 30px 10px}
.req-card-header h3{font-size:1.35rem}
.req-card-body{padding:0 30px 30px}
.req-row-line{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid var(--line);gap:18px}
.req-row-line:last-child{border-bottom:0}
.req-key{color:var(--muted);font-size:.92rem;flex-shrink:0}
.req-value{font-weight:600;text-align:right;word-break:break-word}

/* reviews */
.review-summary{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);height:100%;
  padding:32px;box-shadow:var(--shadow-static);
}
.summary-score{font-size:3.4rem;font-weight:800;letter-spacing:-.04em;color:var(--ink);font-variant-numeric:tabular-nums}
.summary-stars{color:var(--star);margin:8px 0 10px;letter-spacing:2px;font-size:1.4rem}
.summary-caption{color:var(--muted);font-size:.88rem;line-height:1.8}
.review-list{display:flex;flex-direction:column}
.review-item{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 24px;position:relative;margin-bottom:14px;box-shadow:var(--shadow-static)}
.review-item.editor{background:var(--surface-alt);border-color:var(--line)}
.review-quote{font-size:.96rem;color:var(--ink);margin-bottom:14px;line-height:1.85}
.review-meta{display:flex;align-items:center;gap:10px;margin-top:10px}
.review-avatar{width:34px;height:34px;border-radius:50%;background:var(--green-deep);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:700}
.review-source{font-size:.82rem;color:var(--muted)}
.editor-tag{position:absolute;top:14px;right:18px;background:var(--accent);color:var(--accent-ink);font-size:.7rem;font-weight:800;border-radius:100px;padding:3px 10px}

/* news list */
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;box-shadow:var(--shadow-static);transition:transform .2s var(--ease), box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-content{padding:18px 20px 22px}
.news-tag{display:inline-block;background:var(--surface-alt);color:var(--green-deep);font-size:.72rem;font-weight:700;padding:5px 11px;border-radius:100px;margin-bottom:10px}
.news-card h3{font-size:1.05rem;line-height:1.5;margin-bottom:8px}
.news-card h3 a:hover{color:var(--green-deep)}
.news-excerpt{color:var(--muted);font-size:.85rem;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:.76rem;color:var(--muted)}
.btn-sm-bottom{border-top:1px solid var(--line);margin-top:12px;padding-top:14px;display:flex;align-items:center;gap:8px;color:var(--green-deep);font-weight:700;font-size:.85rem}
.btn-sm-bottom:hover{gap:12px;color:var(--ink)}

/* faq */
.faq-panel{height:100%}
.faq-panel .eyebrow{margin-bottom:14px}
.faq-panel h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:800;margin-bottom:12px}
.faq-panel p{color:var(--muted)}
.accordion.custom{--bs-accordion-border-width:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-color:var(--ink);--bs-accordion-active-bg:transparent}
.accordion.custom .accordion-item{background:transparent;border-top:1px solid var(--line);border-bottom:1px solid var(--line);border-radius:0}
.accordion.custom .accordion-item+.accordion-item{border-top:0}
.accordion.custom .accordion-button{background:transparent;padding:24px 40px 24px 0;font-weight:700;font-size:1.05rem;line-height:1.6;box-shadow:none;color:var(--ink)}
.accordion.custom .accordion-button::after{content:"";position:absolute;right:8px;width:28px;height:28px;background:transparent;border-radius:50%;background-image:none;border:1.5px solid var(--ink); transition:transform .2s var(--ease), background .2s var(--ease)}
.accordion.custom .accordion-button::before{content:"";position:absolute;right:8px;width:28px;height:28px;background-image:none}
.accordion.custom .accordion-button:not(.collapsed)::after{background:var(--ink)}
.accordion.custom .accordion-button::before,.accordion.custom .accordion-button::after{
  width:28px;height:28px;position:absolute;right:8px;
}
.accordion.custom .accordion-button .acc-icon{position:absolute;right:6px;width:30px;height:30px;display:flex;align-items:center;justify-content:center}
.acc-icon .plus,.acc-icon .minus{position:absolute;width:16px;height:2px;background:var(--ink)}
.acc-icon .minus{transform:rotate(90deg);transition:transform .2s}
.accordion.custom .accordion-button:not(.collapsed) .acc-icon .minus{transform:rotate(0deg)}
.accordion.custom .accordion-body{padding:0 44px 28px 0;color:var(--muted);line-height:1.85;font-size:.95rem}
.accordion.custom .accordion-button:hover{color:var(--green-deep)}
.accordion.custom .accordion-button:focus{outline:none;box-shadow:none}

/* download cta */
.final-download{position:relative;border-radius:28px;overflow:hidden;background:var(--green-deep);color:#fff;padding:clamp(38px,6vw,90px)}
.final-download::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;opacity:.28;
}
.final-download .wrap{position:relative;z-index:2}
.final-download .soft-title{color:#fff;font-size:clamp(1.9rem,4vw,3.1rem);font-weight:800}
.final-download .subtitle{color:rgba(255,255,255,.8);max-width:520px}
.dl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:0 24px;border-top:1px solid rgba(255,255,255,.2);border-bottom:1px solid rgba(255,255,255,.2);padding:16px 0;margin:34px 0 22px}
.dl-meta .dl-item{font-size:.86rem;color:rgba(255,255,255,.7)}
.dl-meta .dl-item strong{color:#fff;font-weight:700;margin-right:5px}
.safe-icon-list{display:flex;flex-wrap:wrap;gap:8px 10px}
.safe-icon-list span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:6px 16px;font-size:.84rem;display:flex;align-items:center;gap:6px}
.cts-btn{background:var(--accent);color:var(--accent-ink);font-weight:800;border-radius:18px;min-height:64px;padding:18px 36px;display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:1.1rem;border:0;box-shadow:0 8px 0 rgba(18,35,20,.22)}
.cts-btn:hover{background:#ddf89b;color:var(--accent-ink);transform:translateY(-2px)}
.qr-box{display:flex;align-items:center;gap:14px}
.qr-placeholder{width:96px;height:96px;border-radius:14px;border:1px solid #fff;padding:8px;background:#fff}
.qr-placeholder svg{display:block;color:var(--green-deep)}
.qr-desc{color:rgba(255,255,255,.8);font-size:.84rem;line-height:1.6}

/* footer */
.footer{border-radius:0;background:var(--green-deep);color:rgba(255,255,255,.8);padding-top:70px}
.footer a{color:rgba(255,255,255,.75)}
.footer a:hover{color:var(--accent)}
.footer h5{color:#fff;font-size:1rem;font-weight:700;margin-bottom:20px}
.footer-brand{color:#fff;font-size:1.55rem;letter-spacing:-.02em;font-weight:800;line-height:1.3}
.footer-brand small{display:block;font-size:.8rem;color:rgba(255,255,255,.55);font-weight:400;margin-top:5px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:12px}
.footer-links li a{display:inline-block;padding:4px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:50px;padding:26px 0;font-size:.83rem;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.7)}
.copyright{color:rgba(255,255,255,.5)}

/* article cards wide */
.post-row-card{
  display:flex;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;margin-bottom:18px;box-shadow:var(--shadow-static);transition:transform .2s var(--ease), box-shadow .2s var(--ease);
}
.post-row-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.post-row-media{flex:0 0 280px;position:relative;overflow:hidden}
.post-row-media img{width:100%;height:100%;object-fit:cover}
.post-row-body{padding:18px 24px 14px;background:var(--surface);flex:1}
.post-row-body h3{font-size:1.22rem;font-weight:700}
.post-row-body p{color:var(--muted);font-size:.86rem;margin-bottom:0}
.post-more{color:var(--green-deep);font-size:.84rem;font-weight:600;white-space:nowrap}
@media(max-width:767px){
  .post-row-card{flex-direction:column}
  .post-row-media{flex-basis:auto;aspect-ratio:16/9}
}

/* section divider */
.divider-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-static);height:100%}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root {
    --bg: #F4F6F1;
    --surface: #FFFFFF;
    --surface-alt: #ECEFE7;
    --ink: #17251C;
    --muted: #64736A;
    --line: #DDE3D9;
    --accent: #CEF45C;
    --accent-ink: #142010;
    --green-deep: #123B29;
    --star: #F5A623;
    --fs-hero: clamp(2.4rem, 5vw, 4.2rem);
    --fs-h1: 2.2rem;
    --fs-h2: 1.5rem;
    --fs-h3: 1.25rem;
    --fs-body: 1rem;
    --fs-sm: 0.875rem;
    --fs-label: 0.75rem;
    --radius-card: 18px;
    --radius-large: 24px;
    --shadow-sm: 0 2px 12px rgba(20, 35, 25, .05);
    --shadow-hover: 0 18px 36px rgba(15, 35, 22, .12);
    --ease: cubic-bezier(.2, .7, .2, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: var(--fs-body);
    line-height: 1.8;
    letter-spacing: .01em;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--ink); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--green-deep); }
p { font-size: 1rem; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.container { max-width: 1180px; }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ========== Global Nav / Dock ========== */
.site-dock {
    position: fixed;
    top: 14px;
    left: 0;
    right: 0;
    z-index: 1060;
    display: flex;
    justify-content: center;
    pointer-events: none;
}
.dock-inner {
    width: min(1160px, calc(100% - 28px));
    height: 66px;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border: 1px solid rgba(221, 227, 217, .75);
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px 0 18px;
    pointer-events: auto;
    transition: box-shadow .22s var(--ease), background .22s var(--ease);
}
.site-dock.is-scrolled .dock-inner { box-shadow: var(--shadow-hover); background: rgba(255, 255, 255, .94); }
.dock-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.brand-mark {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    border-radius: 12px;
    background: var(--green-deep);
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand-name {
    font-weight: 800;
    font-size: 1.15rem;
    line-height: 1.2;
    color: var(--ink);
    white-space: nowrap;
}
.brand-name span { color: var(--green-deep); display: block; font-size: .68rem; font-weight: 600; letter-spacing: .1em; }
.dock-links {
    display: flex;
    align-items: center;
    gap: 2px;
}
.dock-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 6px 18px;
    border-radius: 999px;
    font-size: .95rem;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
    transition: background .2s var(--ease), color .2s var(--ease);
}
.dock-link:hover { background: var(--surface-alt); color: var(--green-deep); }
.dock-link.active { background: var(--green-deep); color: #fff; }
.dock-actions { display: flex; align-items: center; gap: 12px; }
.btn-dock-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 700;
    font-size: .95rem;
    border: 0;
    box-shadow: 0 3px 0 rgba(20, 32, 16, .14);
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.btn-dock-cta:hover { background: #d9fb80; color: var(--accent-ink); transform: translateY(-2px); box-shadow: 0 6px 0 rgba(20, 32, 16, .1); }
.btn-dock-cta:active { transform: translateY(1px); box-shadow: 0 1px 0 rgba(20, 32, 16, .2); }
.dock-burger {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    background: var(--surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
}
.dock-burger:hover { background: #e2e6de; }
.dock-burger .burger-line { width: 16px; height: 2px; background: var(--ink); border-radius: 2px; }
.mobile-drawer { background: var(--surface); border-left: 1px solid var(--line); }
.mobile-drawer .offcanvas-header { padding: 20px 24px; border-bottom: 1px solid var(--line); }
.mobile-drawer .btn-close { background: transparent; font-size: 1.6rem; line-height: 1; color: var(--ink); opacity: .8; box-shadow: none; }
.drawer-brand { font-weight: 800; font-size: 1.35rem; color: var(--ink); line-height: 1.2; }
.drawer-brand small { display: block; font-size: .72rem; color: var(--green-deep); letter-spacing: .1em; font-weight: 600; }
.mobile-drawer .offcanvas-body { padding: 12px 24px 30px; display: flex; flex-direction: column; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; padding: 12px 0; }
.mobile-nav a {
    min-height: 52px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-radius: 16px;
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--ink);
}
.mobile-nav a:hover, .mobile-nav a.active { background: var(--surface-alt); color: var(--green-deep); }
.mobile-drawer-cta { margin-top: 18px; }

/* ========== Article Main ========== */
.site-main { padding: 132px 0 30px; min-height: 62vh; }
.article-shell { position: relative; }
.breadcrumb-nav {
    max-width: 860px;
    margin: 0 auto 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    color: var(--muted);
    font-size: .875rem;
    line-height: 1.6;
    padding: 0 8px;
}
.breadcrumb-nav a { color: var(--muted); font-weight: 500; }
.breadcrumb-nav a:hover { color: var(--green-deep); }
.breadcrumb-nav .sep { color: var(--line); padding: 0 3px; }
.breadcrumb-nav .current { color: var(--ink); font-weight: 600; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.container-article { max-width: 860px; margin: 0 auto; }
.article-header { padding: 8px 0 18px; }
.article-category-line { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 14px; }
.article-cat-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--surface-alt);
    color: var(--green-deep);
    border: 1px solid var(--line);
}
.article-date { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: .82rem; }
.article-title {
    font-size: clamp(1.9rem, 4vw, 2.55rem);
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.3;
    margin: 0 0 22px;
    max-width: 800px;
    word-break: break-word;
}
.article-summary {
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-left: 3px solid var(--green-deep);
    border-radius: 18px;
    padding: 22px 26px;
    color: #2C4034;
    line-height: 1.95;
    font-size: .95rem;
    margin-bottom: 34px;
}
.article-summary strong { display: block; color: var(--green-deep); font-size: .78rem; letter-spacing: .08em; margin-bottom: 4px; }
.article-content {
    position: relative;
    font-size: 1.06rem;
    line-height: 1.95;
    color: #223128;
    word-break: break-word;
}
.article-content > * { margin-bottom: 1.5em; }
.article-content p { line-height: 1.95; }
.article-content h2, .article-content h3, .article-content h4 { color: var(--ink); font-weight: 700; letter-spacing: -.01em; margin: 2.2em 0 .85em; }
.article-content h2 { font-size: 1.55rem; }
.article-content h3 { font-size: 1.3rem; }
.article-content h4 { font-size: 1.12rem; }
.article-content ul, .article-content ol { padding-left: 1.35rem; margin-bottom: 1.7em; }
.article-content li { margin-bottom: .45em; }
.article-content img { width: 100%; border-radius: 18px; object-fit: cover; margin: .8em 0 1.4em; box-shadow: var(--shadow-sm); }
.article-content blockquote {
    margin: 2em 0;
    padding: 18px 24px;
    border-left: 3px solid var(--green-deep);
    background: var(--surface);
    border-radius: 0 14px 14px 0;
    color: var(--muted);
    line-height: 1.9;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content figcaption, .article-content .wp-caption-text { font-size: .8rem; color: var(--muted); text-align: center; margin-top: -10px; }
.article-content code {
    background: var(--surface-alt);
    padding: 2px 8px;
    border-radius: 8px;
    font-size: .88em;
    color: #254B36;
}
.article-content hr { border: 0; border-top: 1px solid var(--line); margin: 2.6em auto; width: 70px; }
.notfound-panel {
    border: 1px dashed var(--line);
    background: var(--surface);
    border-radius: 22px;
    padding: 64px 24px;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.notfound-panel .nf-icon { width: 60px; height: 60px; margin-bottom: 16px; color: var(--muted); }
.notfound-panel h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.notfound-panel p { color: var(--muted); font-size: .92rem; margin-bottom: 22px; }

/* ========== Article Footer ========== */
.article-footer { border-top: 1px solid var(--line); margin: 46px 0 16px; padding-top: 22px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 28px; }
.article-tags .tag-label { color: var(--muted); font-size: .82rem; margin-right: 4px; }
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--green-deep);
    border-radius: 999px;
    padding: 4px 14px;
    font-size: .78rem;
    font-weight: 600;
    line-height: 1.6;
    transition: background .2s var(--ease), border-color .2s var(--ease);
}
.tag:hover { background: var(--surface-alt); border-color: var(--green-deep); }
.article-pagination { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.article-page-nav {
    flex: 1;
    min-width: 0;
}
.article-page-nav a, .article-page-nav span {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 52px;
    padding: 8px 18px;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: 999px;
    font-size: .9rem;
    font-weight: 600;
    color: var(--ink);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.article-page-nav a:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--green-deep); }
.article-page-nav .is-empty { border-color: transparent; background: transparent; color: var(--muted); opacity: .7; }

/* ========== Related ========== */
.related-section { padding: 72px 0 36px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.section-head h2 { font-size: var(--fs-h2); font-weight: 700; margin: 0; color: var(--ink); }
.section-head .section-link { display: inline-flex; align-items: center; gap: 6px; color: var(--green-deep); font-weight: 600; font-size: .9rem; }
.related-card-link { display: block; height: 100%; }
.related-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    height: 100%;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-alt); }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.related-card:hover .related-thumb img { transform: scale(1.03); }
.related-body { padding: 20px 20px 22px; }
.related-body h3 { font-size: 1.02rem; font-weight: 700; line-height: 1.55; color: var(--ink); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-body p { font-size: .85rem; color: var(--muted); margin: 0 0 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-meta { display: flex; gap: 10px; align-items: center; font-size: .75rem; color: var(--muted); }
.related-meta .meta-cat { color: var(--green-deep); font-weight: 700; }
.empty-state {
    min-height: 180px;
    border: 1px dashed var(--line);
    background: var(--surface-alt);
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    text-align: center;
    padding: 30px;
}
.empty-state .empty-icon { width: 42px; height: 42px; margin-bottom: 10px; color: var(--muted); opacity: .7; }
.empty-state p { font-size: .88rem; margin-bottom: 12px; }
.empty-state a { font-weight: 600; color: var(--green-deep); font-size: .9rem; }

/* ========== Article CTA ========== */
.article-cta { padding: 40px 0 90px; }
.cta-panel {
    position: relative;
    border-radius: 28px;
    overflow: hidden;
    background: var(--green-deep);
    padding: 52px clamp(28px, 5vw, 70px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}
.cta-copy { max-width: 560px; }
.cta-kicker { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .25em; margin-bottom: 10px; display: block; }
.cta-panel h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.01em; line-height: 1.35; }
.cta-panel p { color: rgba(255, 255, 255, .72); font-size: .92rem; margin: 14px 0 0; }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }

/* ========== Footer ========== */
.footer {
    background: var(--green-deep);
    color: rgba(255, 255, 255, .72);
    padding: 72px 0 20px;
    margin-top: 40px;
}
.footer .footer-brand { color: #fff; font-size: 1.55rem; font-weight: 800; line-height: 1.2; }
.footer .footer-brand small { display: block; font-size: .82rem; font-weight: 500; color: rgba(255, 255, 255, .55); letter-spacing: .08em; margin-top: 6px; }
.footer h5 { color: #fff; font-size: .95rem; font-weight: 700; letter-spacing: .06em; margin-bottom: 18px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 4px; }
.footer-links a {
    display: inline-block;
    padding: 9px 0;
    color: rgba(255, 255, 255, .62);
    font-size: .9rem;
    line-height: 1.5;
    transition: color .2s var(--ease), padding-left .2s var(--ease);
}
.footer-links a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 24px; margin-top: 50px; font-size: .8rem; color: rgba(255, 255, 255, .45); }
.footer-bottom .copyright { color: rgba(255, 255, 255, .6); }
.footer-bottom a { color: rgba(255, 255, 255, .6); }
.footer-bottom a:hover { color: var(--accent); }

.btn { border-radius: 12px; font-weight: 700; transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover, .btn-primary:focus { background: #d9fb80; border-color: #d9fb80; color: var(--accent-ink); box-shadow: 0 8px 20px rgba(206, 244, 92, .28); transform: translateY(-2px); }
.btn-primary:active { background: #bde349 !important; border-color: #bde349 !important; transform: translateY(1px); }
.btn-outline-dark { border: 1px solid var(--green-deep); color: var(--green-deep); background: transparent; }
.btn-outline-dark:hover { background: var(--green-deep); color: #fff; }

.btn-lg-cta {
    min-height: 54px;
    padding: 10px 32px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    border-radius: 14px;
    box-shadow: 0 6px 0 rgba(0, 0, 0, .12);
}
.btn-lg-cta:hover { color: var(--accent-ink); background: #d9fb80; transform: translateY(-2px); box-shadow: 0 8px 0 rgba(0, 0, 0, .1); }
.btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .18);
    padding: 10px 24px;
    min-height: 52px;
    border-radius: 999px;
    font-weight: 600;
    transition: background .2s var(--ease), transform .2s var(--ease);
}
.btn-back-home:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); transform: translateY(-2px); }

.cover-shell {
    border-radius: var(--radius-card);
    overflow: hidden;
    background: var(--surface-alt);
}
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

@media (max-width: 991px) {
    .dock-inner { width: calc(100% - 28px); justify-content: space-between; padding-left: 12px; }
    .brand-name { font-size: 1.05rem; }
    .brand-name span { font-size: .62rem; }
    .dock-links { display: none; }
}
@media (max-width: 767px) {
    .site-main { padding-top: 118px; }
    .dock-inner { height: 62px; border-radius: 999px; }
    .btn-dock-cta { display: none; }
    .article-title { font-size: 1.8rem; }
    .article-summary { padding: 18px 18px; }
    .related-card .related-body { padding: 18px; }
    .cta-panel { flex-direction: column; align-items: flex-start; padding: 38px 24px; }
    .cta-actions { width: 100%; }
    .cta-actions .btn { width: 100%; justify-content: center; }
    .article-pagination { flex-direction: column; align-items: stretch; }
    .article-page-nav a, .article-page-nav span { width: 100%; }
    .footer { padding-top: 50px; }
}
@media (max-width: 520px) {
    .site-main { padding-top: 112px; }
    .container { padding-left: 18px; padding-right: 18px; }
    .container-article { padding-left: 12px; padding-right: 12px; }
    .breadcrumb-nav { padding: 0 4px; margin-bottom: 26px; }
    .brand-name { font-size: .98rem; }
    .brand-name span { font-size: .6rem; }
}

/* roulang page: category1 */
:root {
  --bg: #F4F6F1;
  --surface: #FFFFFF;
  --surface-alt: #ECEFE7;
  --ink: #17251C;
  --muted: #64736A;
  --line: #DDE3D9;
  --accent: #CEF45C;
  --accent-ink: #142010;
  --green-deep: #123B29;
  --star: #F5A623;
  --fs-hero: clamp(2.4rem, 5vw, 4.2rem);
  --fs-h1: 2.2rem;
  --fs-h2: 1.5rem;
  --fs-h3: 1.25rem;
  --fs-body: 1rem;
  --fs-sm: 0.875rem;
  --fs-label: 0.75rem;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --radius-card: 18px;
  --radius-media: 24px;
  --radius-box: 12px;
  --shadow-static: 0 2px 12px rgba(20, 35, 25, 0.05);
  --shadow-hover: 0 18px 36px rgba(15, 35, 22, 0.12);
  --transition: 200ms cubic-bezier(0.2, 0.7, 0.2, 1);
  --bs-body-font-family: var(--font-sans);
  --bs-body-color: var(--ink);
  --bs-body-bg: var(--bg);
  --bs-link-color: var(--ink);
  --bs-link-hover-color: var(--green-deep);
  --bs-border-color: var(--line);
  --bs-primary: var(--green-deep);
  --bs-primary-rgb: 18, 59, 41;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.8;
  background: var(--bg);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; object-fit: cover; display: block; }
a { color: var(--ink); text-decoration: none; transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition); }
a:hover { color: var(--green-deep); }
button { font-family: inherit; }
input, button { font-size: inherit; }

h1, h2, h3, h4, h5 { font-weight: 700; color: var(--ink); line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin-top: 0; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 4px; }

.container { max-width: 1180px; }

.section {
  padding-block: clamp(60px, 9vw, 110px);
}
.section--tint { background: var(--surface-alt); }
.section-head {
  margin-bottom: 36px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green-deep);
  font-weight: 700;
  margin-bottom: 10px;
}
.section-head h2 { margin-bottom: 8px; }
.section-head p { color: var(--muted); max-width: 680px; margin-bottom: 0; }

/* Dock nav */
.dock-shell {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 1080;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.dock-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: min(960px, calc(100% - 28px));
  height: 66px;
  background: rgba(255, 255, 255, .86);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(18, 59, 41, .06);
  padding: 0 8px 0 12px;
  pointer-events: auto;
  transition: box-shadow var(--transition);
}
.dock-topbar.scrolled {
  box-shadow: 0 18px 36px rgba(15, 35, 22, .12);
}
.dock-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--ink);
}
.brand-text small {
  font-size: .58rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--muted);
  margin-top: 2px;
}
.dock-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.dock-links .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}
.dock-links .nav-link:hover { background: var(--surface-alt); color: var(--green-deep); }
.dock-links .nav-link.active { background: var(--ink); color: #fff; }
.btn-dock {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 20px;
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 700;
  font-size: .9rem;
  white-space: nowrap;
  transition: var(--transition);
}
.btn-dock:hover { background: #dbfa72; color: var(--accent-ink); transform: translateY(-1px); box-shadow: 0 8px 0 rgba(18, 35, 20, .1); }
.btn-menu {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
}
.btn-menu:hover { background: var(--surface-alt); color: var(--green-deep); }

.mobile-drawer { --bs-offcanvas-width: min(360px, 84vw); }
.mobile-drawer {
  background: var(--surface);
  border-left: 1px solid var(--line);
}
.drawer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ink);
}
.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
}
.drawer-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  font-weight: 600;
  color: var(--ink);
}
.drawer-links a:hover { background: var(--surface-alt); color: var(--green-deep); }
.drawer-links a.active { background: var(--ink); color: #fff; }
.drawer-btn { width: 100%; justify-content: center; }
.offcanvas-header { border-bottom: 1px solid var(--line); padding: 18px 20px; }
.offcanvas-body { padding: 22px 20px 28px; }
.btn-close:focus { box-shadow: 0 0 0 4px rgba(206, 244, 92, .4); }

/* Buttons */
.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 28px;
  border-radius: var(--radius-box);
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.site-btn:hover { color: var(--ink); transform: translateY(-2px); }
.site-btn--primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 4px 0 rgba(18, 35, 20, .1); }
.site-btn--primary:hover { background: #dbfa72; color: var(--accent-ink); box-shadow: 0 8px 0 rgba(18, 35, 20, .1); }
.site-btn--primary:active { transform: translateY(2px); box-shadow: none; }
.site-btn--dark { background: var(--green-deep); color: #fff; box-shadow: 0 4px 0 rgba(0, 0, 0, .16); }
.site-btn--dark:hover { background: #1b4d3a; color: #fff; }
.site-btn--outline { background: transparent; border-color: var(--ink); color: var(--ink); }
.site-btn--outline:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.site-btn--light-outline { background: transparent; border-color: rgba(255,255,255,.65); color: #fff; }
.site-btn--light-outline:hover { background: rgba(255,255,255,.12); color: #fff; border-color: #fff; }
.btn-download-lg { min-height: 58px; font-size: 1.05rem; padding-inline: 34px; position: relative; }
.btn-block { width: 100%; }

/* Eyes / tags */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-label); letter-spacing: .13em; text-transform: uppercase; font-weight: 700; color: var(--muted); margin-bottom: 10px; }
.eyebrow--accent { color: var(--accent); }
.eyebrow--light { color: rgba(255,255,255,.72); }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--green-deep);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}
.tag--accent { background: var(--accent); color: var(--accent-ink); }
.tag--line { background: transparent; border: 1px solid var(--line); color: var(--muted); }
.badge-soft { background: var(--surface-alt); color: var(--green-deep); border-radius: 999px; padding: 4px 12px; font-size: .75rem; font-weight: 600; }

/* breadcrumb */
.breadcrumb-nav { margin-bottom: 18px; }
.breadcrumb { margin: 0; padding: 0; background: transparent; --bs-breadcrumb-divider: "·"; }
.breadcrumb-item { font-size: .84rem; }
.breadcrumb-item a { color: rgba(255,255,255,.72); }
.breadcrumb-item a:hover { color: var(--accent); }
.breadcrumb-item.active { color: rgba(255,255,255,.95); }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.5); }

/* category hero */
.category-hero {
  position: relative;
  background-color: var(--green-deep);
  background-image: linear-gradient(102deg, rgba(18,59,41,.93) 0%, rgba(18,59,41,.82) 55%, rgba(18,59,41,.3) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: calc(118px + clamp(26px, 5vw, 64px)) 0 58px;
}
.category-hero .container { position: relative; z-index: 2; }
.cat-top-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 48px;
  align-items: center;
}
.page-title {
  color: #fff;
  font-size: clamp(1.9rem, 3vw, 2.45rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 16px;
}
.page-title span { color: var(--accent); font-weight: 800; }
.hero-lead {
  color: rgba(255,255,255,.78);
  font-size: 1.02rem;
  max-width: 620px;
  margin-bottom: 22px;
}
.update-notice {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.88);
  font-size: .84rem;
}
.update-notice strong { color: var(--accent); margin: 0 2px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.cat-visual { position: relative; }
.cat-visual .visual-frame {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 28px 56px rgba(0,0,0,.28);
}
.cat-visual img { width: 100%; aspect-ratio: 4 / 5; }
.cat-float-card {
  position: absolute;
  left: -22px;
  bottom: 28px;
  background: var(--surface);
  color: var(--ink);
  padding: 15px 18px;
  border-radius: 18px;
  box-shadow: var(--shadow-hover);
  min-width: 178px;
  border: 1px solid var(--line);
}
.cat-float-card strong { font-size: 1.75rem; line-height: 1; display: block; letter-spacing: -.02em; color: var(--green-deep); }
.cat-float-card small { color: var(--muted); font-size: .8rem; }

/* main layout */
.main-section { padding: 56px 0 30px; }
.filter-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 34px;
  box-shadow: var(--shadow-static);
}
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filter-bar .filter-label { margin-right: 4px; color: var(--muted); font-size: .8rem; }
.pill-filter {
  height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
}
.pill-filter:hover { border-color: var(--green-deep); color: var(--green-deep); }
.pill-filter.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.filter-count { color: var(--muted); font-size: .84rem; }
.filter-count strong { color: var(--green-deep); }

.cat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}
.article-col { min-width: 0; }
.aside-col { position: sticky; top: 100px; }

.content-label {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.content-label h2 { margin: 0; font-size: 1.5rem; }
.content-label span { color: var(--muted); font-size: .84rem; }

/* timeline */
.timeline { margin: 0; }
.timeline-item {
  position: relative;
  padding-left: 118px;
}
.timeline-item:not(:last-child) { margin-bottom: 40px; }
.timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 106px;
  top: 16px;
  bottom: -46px;
  width: 2px;
  background: var(--line);
}
.timeline-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 98px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--surface);
  border: 5px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(206,244,92,.22);
}
.timeline-date {
  position: absolute;
  left: 0;
  top: 2px;
  width: 86px;
  text-align: right;
  padding-right: 0;
}
.timeline-date strong { display: block; font-size: 1.5rem; line-height: 1.05; color: var(--ink); letter-spacing: -.03em; }
.timeline-date span { font-size: .7rem; color: var(--muted); letter-spacing: .06em; }
.tl-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 18px;
  display: flex;
  align-items: stretch;
  gap: 20px;
  box-shadow: var(--shadow-static);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.tl-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(18,59,41,.18); }
.tl-card--featured { background: linear-gradient(135deg, var(--invert,#fff), #fbfdf8); }
.tl-card--featured .thumb { width: 230px; }
.thumb {
  flex-shrink: 0;
  width: 150px;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-alt);
}
.thumb img { width: 100%; height: 100%; transition: transform .35s ease; }
.tl-card:hover .thumb img { transform: scale(1.04); }
.tl-body { display: flex; flex-direction: column; min-width: 0; }
.tl-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 6px; }
.tl-meta span { color: var(--muted); font-size: .75rem; }
.tl-title { margin: 4px 0 8px; line-height: 1.35; }
.tl-title a { color: var(--ink); }
.tl-title a:hover { color: var(--green-deep); }
.tl-card--featured .tl-title { font-size: 1.45rem; }
.tl-excerpt { color: var(--muted); font-size: .9rem; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tl-link {
  margin-top: auto;
  font-weight: 700;
  font-size: .86rem;
  color: var(--green-deep);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tl-link svg { transition: transform var(--transition); }
.tl-link:hover { color: var(--green-deep); }
.tl-link:hover svg { transform: translateX(5px); }
.more-timeline { margin-top: 30px; text-align: center; }

/* side card */
.side-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow-static);
  margin-bottom: 22px;
}
.side-card-title {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.recent-list { list-style: none; margin: 0; padding: 0; }
.recent-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 42px; font-size: .88rem; border-bottom: 1px dashed var(--line); }
.recent-list li:last-child { border-bottom: 0; }
.recent-list a { color: var(--ink); line-height: 1.4; }
.recent-list a:hover { color: var(--green-deep); }
.recent-list time { color: var(--muted); flex-shrink: 0; font-size: .76rem; }
.tags-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tags-cloud a {
  font-size: .78rem;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--green-deep);
  font-weight: 600;
  transition: var(--transition);
}
.tags-cloud a:hover { background: var(--green-deep); color: #fff; }
.side-cta { background: var(--green-deep); border-color: var(--green-deep); color: #fff; }
.side-cta h3 { color: #fff; font-size: 1.05rem; margin-top: 4px; }
.side-cta p { color: rgba(255,255,255,.65); font-size: .86rem; }
.side-cta .site-btn { width: 100%; }

/* why section */
.why-layout {
  display: grid;
  grid-template-columns: .9fr 1.25fr;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-static);
  border: 1px solid var(--line);
  background: var(--surface);
}
.why-intro {
  background: var(--green-deep);
  background-image: linear-gradient(168deg, rgba(18,59,41,.88), rgba(18,59,41,.97)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: clamp(32px, 4vw, 52px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.why-intro h2 { color: #fff; margin-top: 8px; }
.why-intro p { color: rgba(255,255,255,.7); }
.why-stat { margin-top: 34px; border-top: 1px solid rgba(255,255,255,.18); padding-top: 22px; }
.why-stat strong { color: var(--accent); font-size: 2.6rem; display: block; line-height: 1.1; }
.why-stat span { color: rgba(255,255,255,.75); font-size: .86rem; }
.why-features { padding: clamp(28px, 4vw, 54px); background: var(--surface); }
.why-feature-row { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.why-feature-row:first-child { padding-top: 0; }
.why-feature-row:last-child { border-bottom: 0; padding-bottom: 0; }
.feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; flex-shrink: 0; border-radius: 14px; background: var(--surface-alt); color: var(--green-deep); border: 1px solid var(--line); }
.why-feature-row h3 { font-size: 1.03rem; margin-bottom: 4px; }
.why-feature-row p { color: var(--muted); font-size: .88rem; margin-bottom: 0; max-width: 520px; }

/* steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 22px;
  position: relative;
  box-shadow: var(--shadow-static);
  transition: var(--transition);
}
.step-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--surface-alt);
  color: var(--green-deep);
  font-weight: 800;
  font-size: 1rem;
  border: 1px solid var(--line);
  margin-bottom: 18px;
}
.step-card:nth-child(even) { transform: translateY(12px); }
.step-card:nth-child(even):hover { transform: translateY(7px); }
.step-card h3 { font-size: 1.02rem; }
.step-card p { color: var(--muted); font-size: .86rem; margin-bottom: 0; }

/* faq */
.faq-layout {
  display: grid;
  grid-template-columns: .82fr 1.5fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
.faq-side { position: sticky; top: 100px; }
.faq-side h2 { margin-bottom: 14px; }
.faq-side p { color: var(--muted); font-size: .92rem; max-width: 420px; }
.accordion { --bs-accordion-btn-icon-width: 0; --bs-accordion-active-color: var(--ink); --bs-accordion-btn-active-icon: none; }
.accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); }
.accordion-button {
  background: transparent;
  border: 0;
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 700;
  padding: 20px 46px 20px 0;
  line-height: 1.5;
  box-shadow: none;
}
.accordion-button:not(.collapsed) { color: var(--green-deep); background: transparent; box-shadow: none; }
.accordion-button:focus { box-shadow: none; }
.accordion-button::after {
  content: "";
  position: absolute;
  right: 4px;
  width: 24px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2317251C' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  transition: transform .24s ease;
}
.accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
.accordion-body { padding: 0 40px 22px 0; color: var(--muted); font-size: .92rem; }

/* bottom CTA */
.cta-section { padding-bottom: clamp(70px, 9vw, 110px); }
.cta-panel {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  padding: clamp(38px, 6vw, 72px);
  background-color: var(--green-deep);
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 30%;
  color: #fff;
  text-align: center;
}
.cta-panel::before { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, rgba(18,59,41,.92), rgba(18,59,41,.78)); }
.cta-panel .cta-inner { position: relative; z-index: 1; max-width: 780px; margin-inline: auto; }
.cta-panel h2 { color: #fff; font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -.02em; margin: 6px 0 14px; }
.cta-panel p { color: rgba(255,255,255,.72); max-width: 640px; margin: 0 auto 28px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.cta-note { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 30px; }
.cta-note span { font-size: .76rem; color: rgba(255,255,255,.55); display: inline-flex; align-items: center; gap: 6px; }

/* footer */
.footer {
  background: var(--green-deep);
  color: #fff;
  padding: clamp(56px, 8vw, 84px) 0 34px;
  margin-top: 0;
}
.footer h5 { color: rgba(255,255,255,.9); font-size: .92rem; letter-spacing: .04em; margin-bottom: 16px; }
.footer-brand { font-size: 1.35rem; font-weight: 800; color: #fff; display: flex; flex-direction: column; gap: 6px; }
.footer-brand small { font-size: .72rem; color: rgba(255,255,255,.52); font-weight: 500; letter-spacing: .12em; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 4px; }
.footer-links a { display: inline-block; padding: 6px 0; color: rgba(255,255,255,.62); font-size: .9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.14); margin-top: 46px; padding-top: 28px; font-size: .8rem; color: rgba(255,255,255,.48); }
.copyright { color: rgba(255,255,255,.58); }

/* responsive */
@media (max-width: 1199.98px) {
  .timeline-item { padding-left: 100px; }
  .timeline-item:not(:last-child)::before { left: 88px; }
  .timeline-item:not(:last-child)::after { left: 80px; }
  .timeline-date { width: 72px; }
}
@media (max-width: 991.98px) {
  .dock-topbar { width: 88px; justify-content: space-between; padding: 0 10px; border-radius: 999px; }
  .dock-brand .brand-text { display: none; }
  .dock-links { display: none; }
  .btn-menu { display: inline-flex; }
  .btn-dock { display: none; }
  .cat-top-grid { grid-template-columns: 1fr; }
  .cat-visual { max-width: 480px; }
  .cat-layout { grid-template-columns: 1fr; }
  .aside-col { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
  .side-card { margin-bottom: 0; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}
@media (max-width: 767.98px) {
  .section { padding-block: 64px; }
  .category-hero { padding-top: 120px; }
  .tl-card { flex-direction: column; }
  .tl-card .thumb, .tl-card--featured .thumb { width: 100%; aspect-ratio: 16 / 9; }
  .timeline-item { padding-left: 76px; }
  .timeline-item:not(:last-child)::before { left: 64px; }
  .timeline-item:not(:last-child)::after { left: 56px; }
  .timeline-date { width: 58px; }
  .timeline-date strong { font-size: 1.22rem; }
  .why-layout { grid-template-columns: 1fr; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-side { position: static; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card:nth-child(even) { transform: none; }
  .step-card:nth-child(even):hover { transform: translateY(-5px); }
  .aside-col { grid-template-columns: 1fr; }
  .filter-wrap { align-items: flex-start; flex-direction: column; }
  .hero-actions .site-btn { width: 100%; }
  .cta-actions .site-btn { width: 100%; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: left; }
}
@media (max-width: 480px) {
  .dock-topbar { width: calc(100% - 20px); top: 10px; }
  .category-hero { padding-top: 108px; }
  .cat-float-card { left: 12px; bottom: 12px; }
  .timeline-item { padding-left: 10px; }
  .timeline-date { position: static; width: auto; text-align: left; display: flex; align-items: baseline; gap: 8px; margin-bottom: 10px; }
  .timeline-item:not(:last-child)::before,
  .timeline-item:not(:last-child)::after { display: none; }
  .tl-title, .tl-card--featured .tl-title { font-size: 1.15rem; }
  .section-head h2 { font-size: 1.42rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; transition-duration: .001s !important; scroll-behavior: auto !important; }
}

/* roulang page: category2 */
:root {
  --bg: #F4F6F1;
  --surface: #ffffff;
  --surface-alt: #ECEFE7;
  --ink: #17251C;
  --muted: #64736A;
  --line: #DDE3D9;
  --accent: #CEF45C;
  --accent-ink: #142010;
  --green-deep: #123B29;
  --star: #F5A623;
  --radius-card: 18px;
  --radius-media: 24px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow-rest: 0 2px 12px rgba(20, 35, 25, .05);
  --shadow-hover: 0 18px 36px rgba(15, 35, 22, .12);
  --shadow-accent: 0 8px 0 rgba(18, 35, 20, .1);
  --ease: cubic-bezier(.2, .7, .2, 1);
}
*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-top: 24px;
}
button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--accent); color: var(--accent-ink); }

.container { max-width: 1180px; padding-left: 24px; padding-right: 24px; }

.section { padding-block: clamp(56px, 8vw, 96px); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 36px;
}
.section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
  margin: 0;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--accent); border-radius: 99px; }
.text-muted { color: var(--muted) !important; }

/* shared dock */
.site-dock { position: sticky; top: 14px; z-index: 1030; padding-inline: 14px; margin-bottom: clamp(36px, 7vw, 72px); }
.dock-shell {
  max-width: min(940px, 100%);
  height: 68px;
  margin-inline: auto;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(221, 227, 217, .8);
  border-radius: 999px;
  box-shadow: var(--shadow-rest);
  display: flex;
  align-items: center;
  padding: 8px 10px 8px 16px;
  gap: 12px;
  transition: box-shadow .2s var(--ease), background-color .2s var(--ease);
}
.site-dock.is-scrolled .dock-shell {
  box-shadow: 0 8px 28px rgba(15, 35, 22, .12);
  background: rgba(255, 255, 255, .94);
}
.dock-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.dock-logo-mark {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--accent-ink);
  flex-shrink: 0;
}
.dock-logo-text {
  display: flex; flex-direction: column; line-height: 1.15;
}
.dock-logo-text strong {
  font-size: 1.16rem; font-weight: 800; letter-spacing: -.01em;
}
.dock-logo-text small {
  font-size: .68rem; color: var(--muted); font-weight: 500; letter-spacing: .04em;
}
.dock-links {
  display: flex; align-items: center; justify-content: center; gap: 4px; flex: 1; min-width: 0;
}
.dock-links .nav-link,
.mobile-nav-links a {
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  color: var(--ink);
  font-weight: 600;
  font-size: .92rem;
  line-height: 1.4;
  white-space: nowrap;
  transition: color .18s var(--ease), background-color .18s var(--ease), box-shadow .18s var(--ease);
}
.dock-links .nav-link:hover,
.mobile-nav-links a:hover { background: var(--surface-alt); color: var(--ink); }
.dock-links .nav-link.active,
.mobile-nav-links a.active {
  background: var(--ink); color: #fff;
}
.dock-download,
.btn-download,
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 9px; }
.dock-download {
  height: 48px; padding: 0 20px; flex-shrink: 0;
  background: var(--accent); color: var(--accent-ink);
  border-radius: var(--radius-pill);
  font-weight: 700; font-size: .9rem;
  border: 0; cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background-color .18s var(--ease), filter .18s var(--ease);
}
.dock-download:hover { background: #d9ff62; color: var(--accent-ink); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(206, 244, 92, .4); }
.dock-download:active { transform: translateY(0); }
.dock-download svg { width: 17px; height: 17px; }

.dock-burger {
  width: 46px; height: 46px; display: none; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 50%;
  background: #fff; margin-left: auto; cursor: pointer; padding: 0;
}
.dock-burger span {
  display: block; width: 17px; height: 2px; background: var(--ink);
  margin: 3px auto; border-radius: 2px; transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.mobile-nav { background: var(--surface); color: var(--ink); border-left: 0; width: min(360px, 84vw); }
.mobile-nav .offcanvas-header { padding: 22px 22px 14px; border-bottom: 1px solid var(--line); }
.mobile-nav-links { list-style: none; padding: 16px 20px; margin: 0; }
.mobile-nav-links li { margin-bottom: 6px; }
.mobile-nav-links a { display: block; padding: 12px 14px; border-radius: 14px; }
.mobile-nav-links a.active { background: var(--ink); color: #fff; }
.mobile-nav-bottom { padding: 16px 22px 30px; border-top: 1px solid var(--line); }
.offcanvas-backdrop.show { opacity: .42; }

/* category hero */
.category-hero { padding-bottom: clamp(28px, 5vw, 56px); }
.crumb {
  display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px;
  font-size: .82rem; color: var(--muted); margin-bottom: 28px; padding-top: 0;
}
.crumb a:hover { color: var(--ink); }
.crumb .sep { opacity: .6; }
.hero-art {
  position: relative;
  border-radius: var(--radius-media);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--surface-alt);
  box-shadow: var(--shadow-rest);
  margin-bottom: 30px;
}
.hero-art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(150deg, rgba(18, 59, 41, .2), transparent 65%); pointer-events: none; }
.hero-art img,
.hero-art source { width: 100%; height: 100%; object-fit: cover; }
.page-title-block h1 {
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.08;
  margin: 6px 0 18px;
}
.page-title-block .lead {
  color: var(--muted);
  max-width: 680px;
  font-size: 1rem;
  margin-bottom: 22px;
}
.update-inline {
  display: flex; flex-wrap: wrap; gap: 10px;
  font-size: .83rem; color: var(--muted); margin-bottom: 0;
}
.update-inline span {
  background: var(--surface); border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 6px;
}
.update-inline svg { width: 15px; height: 15px; color: var(--green-deep); }

/* filter pills */
.filterbar {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 30px;
}
.filter-pill {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 9px 18px;
  font-size: .86rem;
  font-weight: 600;
  transition: all .18s var(--ease);
}
.filter-pill:hover { border-color: var(--ink); transform: translateY(-1px); box-shadow: var(--shadow-rest); }
.filter-pill.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* layout columns */
.layout-side { position: relative; }
.grid-main { padding-right: 12px; }
.aside-stack { position: sticky; top: 110px; display: flex; flex-direction: column; gap: 18px; }
.column-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 22px;
  box-shadow: var(--shadow-rest);
}
.column-panel h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0; }
.panel-title {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 14px; margin-bottom: 8px; border-bottom: 1px solid var(--line);
}
.panel-title .meta { font-size: .75rem; color: var(--muted); font-weight: 500; }
.side-list { list-style: none; padding: 0; margin: 0; }
.side-list li { border-bottom: 1px solid var(--line); }
.side-list li:last-child { border-bottom: 0; }
.side-list a { display: block; padding: 13px 2px; transition: background-color .2s var(--ease); border-radius: 8px; }
.side-list a:hover { background: var(--surface-alt); }
.side-list strong { display: block; font-size: .89rem; font-weight: 600; line-height: 1.55; }
.side-list time { display: block; margin-top: 4px; font-size: .76rem; color: var(--muted); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tag-cloud a {
  padding: 4px 12px;
  background: var(--surface-alt);
  color: var(--ink);
  border-radius: 999px;
  font-size: .78rem;
  transition: background-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}
.tag-cloud a:hover { background: var(--ink); color: #fff; transform: translateY(-1px); }
.side-note {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 18px;
  background: var(--surface-alt);
}
.side-note strong { display: block; font-size: .9rem; margin-bottom: 8px; }
.side-note p { margin: 0; font-size: .84rem; color: var(--muted); }

/* guide cards variant for category2 : double-column tutorial covers */
.guide-collection { display: flex; flex-direction: column; gap: 28px; }
.guide-topic-card { position: relative; height: 100%; }
.guide-cover {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--surface-alt);
  box-shadow: var(--shadow-rest);
  transform: translateZ(0);
}
.guide-cover::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 72%;
  background: linear-gradient(to top, rgba(5, 22, 14, .92) 8%, rgba(5, 22, 14, 0) 100%);
  pointer-events: none;
}
.guide-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.guide-topic-card:hover .guide-cover img { transform: scale(1.04); }
.guide-index {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 30px; padding: 0 8px;
  background: var(--accent); color: var(--accent-ink);
  border-radius: 999px; font-weight: 800; font-size: .78rem;
  letter-spacing: .02em;
}
.guide-caption {
  position: absolute; z-index: 2; left: 18px; right: 18px; bottom: 16px;
  color: #fff;
}
.guide-caption .guide-kind {
  font-size: .7rem; font-weight: 700; color: var(--accent); letter-spacing: .08em; text-transform: uppercase;
  display: block; margin-bottom: 4px;
}
.guide-caption h3 { font-size: 1.3rem; font-weight: 700; line-height: 1.3; margin: 0; color: #fff; letter-spacing: -.01em; }
.guide-card-body { padding: 16px 2px 0; }
.guide-card-body p { font-size: .9rem; color: var(--muted); margin-bottom: 14px; }
.guide-links { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.read-guide {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .9rem; font-weight: 700; color: var(--ink);
  transition: color .18s var(--ease), gap .18s var(--ease);
}
.read-guide:hover { color: var(--green-deep); gap: 10px; }
.read-guide svg { width: 17px; height: 17px; }
.category-chip {
  font-size: .75rem; color: var(--muted); background: var(--surface-alt);
  padding: 3px 10px; border-radius: 999px; font-weight: 600;
}

/* process / dark cooperating strip */
.info-strip {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--green-deep);
  color: #fff;
  padding: clamp(28px, 5vw, 64px) clamp(22px, 4vw, 60px);
}
.info-strip .strip-bg { position: absolute; inset: 0; background-image: url("/assets/images/backpic/back-1.png"); background-size: cover; background-position: center; opacity: .35; }
.info-strip .strip-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, rgba(18, 59, 41, .92), rgba(18, 59, 41, .55)); }
.info-inner { position: relative; z-index: 2; }
.info-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 26px; flex-wrap: wrap; margin-bottom: 22px; }
.info-head .kicker { color: #b9cbb2; }
.info-head .kicker::before { background: var(--accent); }
.info-head h2 { color: #fff; font-size: clamp(1.4rem, 2.6vw, 2rem); margin: 0; max-width: 420px; }
.info-head p { color: rgba(255, 255, 255, .68); max-width: 460px; margin: 0; font-size: .9rem; }
.info-points {
  border-top: 1px solid rgba(255, 255, 255, .18);
  margin-top: 14px; padding-top: 28px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.info-point { display: flex; gap: 12px; align-items: flex-start; }
.info-point .point-ico { width: 36px; height: 36px; border-radius: 10px; background: rgba(255,255,255,.08); color: var(--accent); display: grid; place-items: center; flex: none; }
.info-point .point-ico svg { width: 18px; height: 18px; }
.info-point strong { display: block; font-size: .93rem; margin-bottom: 2px; color: #fff; }
.info-point p { color: rgba(255, 255, 255, .62); font-size: .8rem; line-height: 1.7; margin: 0; }

/* FAQ */
.faq-upper { padding-top: clamp(60px, 8vw, 100px); }
.faq-side p { color: var(--muted); font-size: .9rem; max-width: 380px; }
.faq-list .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); }
.faq-list .accordion-button {
  border: 0; padding: 22px 20px 22px 0;
  background: transparent; box-shadow: none; color: var(--ink);
  font-size: 1rem; font-weight: 700; line-height: 1.5;
  border-radius: 0 !important;
  font-family: inherit;
}
.faq-list .accordion-button:not(.collapsed) { color: var(--ink); }
.faq-list .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
.faq-list .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317251C' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  background-position: center; background-size: 20px;
  width: 22px; height: 22px;
  transition: transform .22s var(--ease);
}
.faq-list .accordion-button:focus, .faq-list .accordion-button:focus-visible { box-shadow: none; outline: 2px solid rgba(23, 37, 28, .55); outline-offset: -2px; border-radius: 8px; }
.faq-list .accordion-body { padding: 0 clamp(0px, 4vw, 80px) 24px 0; color: var(--muted); font-size: .9rem; max-width: 660px; }
.faq-guide-link { margin-top: 26px; display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--ink); }
.faq-guide-link:hover { color: var(--green-deep); }

/* final CTA panel */
.cta-wrap { padding-top: clamp(56px, 8vw, 90px); }
.download-panel {
  border-radius: 28px;
  background-color: var(--green-deep);
  background-image: url("/assets/images/backpic/back-3.png");
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: clamp(32px, 6vw, 72px);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.05);
}
.download-panel::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(8, 28, 18, .94), rgba(18, 59, 41, .72)); }
.download-panel .content { position: relative; z-index: 2; }
.chip-download {
  font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 16px; font-weight: 700;
}
.download-panel h2 { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; color: #fff; max-width: 640px; margin-bottom: 14px; }
.download-panel .sub { color: rgba(255, 255, 255, .68); max-width: 580px; margin-bottom: 30px; }
.download-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  min-height: 54px;
  padding: 0 30px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: .96rem;
  box-shadow: var(--shadow-accent);
  transition: transform .18s var(--ease), background-color .18s var(--ease), box-shadow .18s var(--ease), color .18s var(--ease);
}
.btn-primary:hover { background: #d8fd6b; color: var(--accent-ink); transform: translateY(-3px); box-shadow: 0 11px 0 rgba(18, 35, 20, .12); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 5px 0 rgba(18, 35, 20, .1); }
.btn-outline-light-c {
  border: 1px solid rgba(255,255,255,.5);
  color: #fff;
  min-height: 54px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent;
  transition: all .18s var(--ease);
}
.btn-outline-light-c:hover { background: #fff; color: var(--green-deep); border-color: #fff; transform: translateY(-2px); }
.btn-outline-light-c svg { width: 16px; height: 16px; }
.cta-meta { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.16); }
.cta-meta .meta-block { display: flex; flex-direction: column; }
.cta-meta b { font-size: 1rem; font-weight: 800; color: #fff; font-variant-numeric: tabular-nums; }
.cta-meta small { color: rgba(255,255,255,.55); font-size: .78rem; margin-top: 3px; }
.secure-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.secure-item { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,.08); border-radius: 999px; padding: 7px 13px; font-size: .8rem; color: rgba(255,255,255,.85); }
.secure-item svg { width: 15px; height: 15px; color: var(--accent); }

/* footer shared */
.footer {
  background: var(--green-deep);
  color: rgba(255,255,255,.75);
  margin-top: clamp(70px, 10vw, 110px);
}
.footer .container { padding-block: 62px 28px; }
.footer-brand { color: #fff; font-size: 1.4rem; font-weight: 800; display: flex; flex-direction: column; }
.footer-brand small { font-size: .75rem; color: rgba(255,255,255,.5); font-weight: 500; margin-top: 6px; letter-spacing: .02em; }
.footer h5 { color: #fff; font-size: .92rem; font-weight: 700; margin-bottom: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 2px; }
.footer-links a { display: inline-block; padding: 6px 0; color: rgba(255,255,255,.68); font-size: .9rem; transition: color .2s var(--ease), transform .2s var(--ease); }
.footer-links a:hover { color: var(--accent); transform: translateX(3px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.14); margin-top: 40px; padding-top: 22px; font-size: .82rem; color: rgba(255,255,255,.45); gap: 10px; }
.copyright { color: rgba(255,255,255,.55); }

.btn-focus, .filter-pill, .dock-download, .footer-links a, .dock-links .nav-link, .mobile-nav-links a {
  outline-offset: 3px;
}
.btn-focus:focus-visible, .filter-pill:focus-visible, .dock-download:focus-visible, a:focus-visible, button:focus-visible, .accordion-button:focus-visible {
  outline: 2px solid var(--ink);
}

@media (max-width: 991px) {
  body { padding-top: 12px; }
  .site-dock { top: 10px; padding-inline: 10px; }
  .dock-shell {
    height: 66px;
    padding: 8px;
    border-radius: 999px;
  }
  .dock-logo-text { display: none; }
  .dock-logo { margin-right: auto; }
  .dock-links { display: none; }
  .dock-burger { display: inline-flex; }
  .dock-download.desktop-only { display: none; }
  .hero-art { margin-bottom: 18px; }
  .grid-main { padding-right: 0; margin-bottom: 24px; }
  .aside-stack { position: static; }
}

@media (max-width: 767px) {
  .section { padding-block: clamp(48px, 9vw, 72px); }
  .dock-logo { margin-right: 0; }
  .dock-burger { display: inline-flex; }
  .hero-art { aspect-ratio: 16 / 10; }
  .page-title-block h1 { margin-top: 0; }
  .filterbar { gap: 8px; }
  .filter-pill { padding: 8px 14px; font-size: .82rem; }
  .info-points { grid-template-columns: 1fr 1fr; gap: 24px 12px; }
  .info-head { flex-direction: column; }
  .info-head .kicker { margin-bottom: 4px; }
  .info-points { margin-top: 4px; }
  .download-panel { border-radius: 20px; }
  .download-actions .btn-primary,
  .download-actions .btn-outline-light-c { width: 100%; }
  .footer { margin-top: 60px; }
  .footer .row { row-gap: 32px; }
}

@media (max-width: 575px) {
  .site-dock { padding-inline: 0; }
  .dock-shell { width: 100%; max-width: none; border-radius: 999px; }
  .info-points { grid-template-columns: 1fr; }
  .cta-meta { gap: 16px; }
  .secure-row { gap: 8px; }
  .secure-item { width: 100%; justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .guide-cover img, .guide-topic-card:hover .guide-cover img { transform: none !important; }
}