/* roulang page: index */
:root{
  --bg:#0B0A11;
  --surface:#14121D;
  --surface-2:linear-gradient(180deg,#171522,#121019);
  --primary:#14E0B0;
  --primary-2:#0FB08A;
  --accent:#7C5CFF;
  --hot:#FF7A45;
  --text:#E8E6F0;
  --text-body:#DCD9E6;
  --text-2:#A8A3B8;
  --text-3:#6E6A80;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(20,224,176,.45);
  --ok:#22C55E;
  --warn:#F59E0B;
  --err:#EF4444;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-tag:6px;
  --radius-img:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --sect:112px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-body);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  top:-180px;right:-180px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.20),transparent 68%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,opacity .25s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(26px,5vw,44px);line-height:1.25}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35}
h3{font-size:19px;line-height:1.5;font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{max-width:720px;padding:0 24px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1140px}}
@media (min-width:1400px){.container{max-width:1320px}}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.section{padding:var(--sect) 0;position:relative;z-index:1}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:38px}
.section-head p{max-width:620px;color:var(--text-2);margin:12px 0 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--primary);
  background:rgba(20,224,176,.10);
  border:1px solid rgba(20,224,176,.30);
  border-radius:var(--radius-tag);
  padding:5px 12px;margin-bottom:18px;
}
.eyebrow i{font-size:12px}
.text-accent{color:var(--primary)}
.divider-neon{height:1px;background:linear-gradient(90deg,transparent,#14E0B0,#7C5CFF,transparent);opacity:.55;border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(11,10,17,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,.7),rgba(124,92,255,.7));
}
.header-inner{display:flex;align-items:center;gap:24px;height:74px}
.logo{display:flex;flex-direction:column;line-height:1.1;flex-shrink:0}
.logo-main{
  font-size:22px;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(92deg,#14E0B0,#7C5CFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.18em;margin-top:3px}
.main-nav{display:none;align-items:center;gap:6px;margin-left:auto}
.main-nav a{
  position:relative;display:block;
  padding:10px 14px;border-radius:8px;
  font-size:15px;color:var(--text-2);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;opacity:.9;
}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary);text-shadow:0 0 12px rgba(20,224,176,.6)}
.main-nav a.active::after{transform:scaleX(1)}
.nav-cta{display:none}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:10px;
  background:transparent;border:1px solid var(--line);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-2);color:var(--primary)}
@media (min-width:992px){
  .main-nav{display:flex}
  .nav-cta{display:inline-flex}
  .nav-toggle{display:none}
}
.drawer{
  position:fixed;inset:74px 0 0 0;z-index:1029;
  background:rgba(11,10,17,.98);
  padding:22px 24px 40px;
  display:none;overflow-y:auto;
}
.drawer.open{display:block}
.drawer a{
  display:block;padding:16px 4px;font-size:17px;color:var(--text);
  border-bottom:1px solid rgba(20,224,176,.18);
}
.drawer a.active{color:var(--primary)}
.drawer .btn{margin-top:24px;width:100%;justify-content:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background .25s ease;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(92deg,#14E0B0,#0FB08A);color:#08130F}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px var(--line-2),0 10px 30px rgba(20,224,176,.28);color:#08130F}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-2);color:var(--primary);transform:translateY(-1px)}
.btn-hot{background:linear-gradient(92deg,#FF7A45,#FF9A6B);color:#21100A}
.btn-hot:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(255,122,69,.30);color:#21100A}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{padding:64px 0 88px;position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media (min-width:980px){.hero-grid{grid-template-columns:6fr 6fr;gap:52px;min-height:620px}}
.hero h1{margin-bottom:20px}
.hero h1 span{color:var(--primary)}
.hero-sub{font-size:18px;color:var(--text-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}
.metrics div{padding:18px 16px 4px 0}
.metrics div+div{border-left:1px solid var(--line);padding-left:18px}
.metrics strong{display:block;font-size:26px;font-weight:800;color:var(--text);line-height:1.2}
.metrics span{font-size:13px;color:var(--text-3)}
@media (min-width:640px){.metrics{grid-template-columns:repeat(4,1fr)}}
.hero-visual{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow);
}
.hero-visual img{width:100%;height:320px;object-fit:cover;border-radius:0}
.hero-visual::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.5;pointer-events:none;
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,10,17,.05) 30%,rgba(11,10,17,.88));
  pointer-events:none;
}
.hero-visual .glow{
  position:absolute;left:-40px;bottom:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,224,176,.30),transparent 66%);
  pointer-events:none;
}
.hero-visual .visual-cap{
  position:absolute;left:24px;right:24px;bottom:22px;z-index:2;
  font-size:14px;color:var(--text-2);
}
.hero-visual .visual-cap strong{display:block;color:var(--text);font-size:17px;margin-bottom:6px}
@media (max-width:979px){.hero-visual img{height:240px}}
@media (min-width:980px){.hero-visual img{height:460px}}

/* ---------- ladder ---------- */
.ladder{display:flex;flex-direction:column;gap:20px}
.ladder-item{
  display:grid;grid-template-columns:1fr;gap:22px;
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px 26px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.ladder-item:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.ladder-item .lvl{display:flex;align-items:center;gap:16px}
.ladder-item .num{
  font-size:38px;font-weight:800;line-height:1;
  font-family:ui-monospace,Menlo,Consolas,monospace;
  color:rgba(232,230,240,.16);
}
.ladder-item h3{margin-bottom:6px}
.ladder-item .lvl small{color:var(--text-3);font-size:13px;letter-spacing:.08em}
.ladder-item ul li{position:relative;padding-left:18px;color:var(--text-2);font-size:15.5px;margin-bottom:6px}
.ladder-item ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary);
}
.ladder-item .lvl-action{display:flex;align-items:center}
.ladder-item.top{border-color:var(--line-2);box-shadow:0 0 0 1px rgba(20,224,176,.14),var(--shadow)}
@media (min-width:860px){
  .ladder-item{grid-template-columns:1.05fr 1.6fr auto;align-items:center;gap:32px;padding:32px 34px}
  .ladder-item:nth-child(1){margin-right:9%}
  .ladder-item:nth-child(2){margin-right:4.5%}
  .ladder-item:nth-child(3){margin-right:0}
}

/* ---------- compare ---------- */
.scroll-hint{display:none;font-size:13px;color:var(--text-3);margin-bottom:12px}
.compare-wrap{overflow-x:auto;border-radius:var(--radius-card)}
.compare-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15.5px}
.compare-table th,.compare-table td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;color:var(--text-body)}
.compare-table thead th{
  position:sticky;top:0;z-index:2;
  background:#15131f;color:var(--text);font-size:16px;
}
.compare-table thead th:first-child{border-top-left-radius:var(--radius-card)}
.compare-table thead th:last-child{border-top-right-radius:var(--radius-card)}
.compare-table tbody tr:nth-child(odd){background:rgba(255,255,255,.03)}
.compare-table td:not(:first-child),.compare-table th:not(:first-child){text-align:center}
.compare-table .feat{color:var(--text-2)}
.compare-table .rec{position:relative;background:rgba(20,224,176,.05);transform:translateY(-8px);border-top:3px solid var(--primary)}
.badge-hot{
  display:inline-block;font-size:12px;padding:3px 9px;border-radius:var(--radius-tag);
  background:rgba(255,122,69,.12);color:var(--hot);border:1px solid rgba(255,122,69,.30);
  margin-left:8px;vertical-align:middle;
}
.badge-neon{
  display:inline-block;font-size:12px;padding:3px 9px;border-radius:var(--radius-tag);
  background:rgba(20,224,176,.12);color:var(--primary);border:1px solid rgba(20,224,176,.30);
}
.compare-table .cell-btn{padding:20px 12px 24px}
.price{font-size:22px;font-weight:800;color:var(--text)}
.price small{font-size:12px;color:var(--text-3);font-weight:400;display:block;margin-top:2px}

/* ---------- flash bar ---------- */
.flash{padding:0 0 8px}
.flash-bar{
  display:grid;grid-template-columns:1fr;gap:18px;align-items:center;
  border-radius:var(--radius-card);padding:26px 28px;
  background:linear-gradient(96deg,rgba(255,122,69,.16),rgba(20,224,176,.12));
  border:1px solid rgba(255,122,69,.35);
}
.flash-bar .timer{display:flex;gap:10px;align-items:center}
.flash-bar .timer .unit{
  background:#191622;border:1px solid var(--line);border-radius:10px;
  padding:8px 12px;text-align:center;min-width:62px;
}
.flash-bar .timer .unit b{display:block;font-size:22px;color:var(--text);font-weight:800}
.flash-bar .timer .unit i{font-style:normal;font-size:11px;color:var(--text-3)}
.flash-bar p{margin:0;color:var(--text-body);font-size:16px}
@media (min-width:900px){
  .flash-bar{grid-template-columns:auto 1fr auto;gap:32px;min-height:104px}
}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1200px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.news-card .tag{
  position:absolute;left:14px;top:14px;
  font-size:12px;padding:4px 10px;border-radius:var(--radius-tag);
  background:rgba(11,10,17,.78);color:var(--primary);border:1px solid rgba(20,224,176,.35);
}
.news-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card h3{
  font-size:18px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .excerpt{
  color:var(--text-2);font-size:15px;line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px 14px;
}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--radius-card);background:var(--surface-2);
}
.empty-state i{font-size:30px;color:var(--text-3);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-2);margin-bottom:20px}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:992px){.faq-layout{grid-template-columns:5fr 7fr;gap:52px;align-items:start}}
.faq-aside p{color:var(--text-2)}
.faq-list{display:flex;flex-direction:column;gap:14px}
details.faq{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
details.faq:hover{border-color:var(--line-2)}
details.faq[open]{border-color:var(--line-2);box-shadow:0 0 0 1px rgba(20,224,176,.10)}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 22px;font-size:16.5px;font-weight:700;color:var(--text);
  border-left:3px solid transparent;transition:color .25s ease,border-color .25s ease;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary .ico{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
details.faq summary .ico::before{content:"+"}
details.faq[open] summary{color:var(--primary);border-left-color:var(--primary)}
details.faq[open] summary .ico{border-color:var(--line-2);color:var(--primary)}
details.faq[open] summary .ico::before{content:"−"}
details.faq .answer{padding:0 22px 22px 25px;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ---------- form ---------- */
.contact-layout{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:992px){.contact-layout{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}
.contact-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text-2)}
.contact-list i{color:var(--primary);margin-top:5px}
.form-card{
  background:var(--surface-2);border:1px solid var(--line-2);border-radius:var(--radius-card);
  padding:30px 26px;box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr;gap:18px;margin-bottom:18px}
@media (min-width:640px){.form-row.two{grid-template-columns:1fr 1fr}}
label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px}
label .req{color:var(--hot);margin-left:4px}
input,select,textarea{
  width:100%;background:#14121D;border:1px solid var(--line);border-radius:var(--radius-input);
  color:var(--text);padding:0 14px;height:48px;transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
textarea{height:118px;padding:12px 14px;line-height:1.7;resize:vertical}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,224,176,.18);
}
.form-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
.form-note{font-size:13px;color:var(--text-3)}
@media (min-width:768px){
  .form-actions{flex-direction:row;justify-content:flex-end;align-items:center}
  .form-actions .form-note{margin-right:auto}
  .form-actions .btn{min-width:180px}
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:40px;
  background:linear-gradient(180deg,#100E18,#0B0A11);
}
.site-footer::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,.6),rgba(124,92,255,.6));
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding:64px 0 44px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand p{color:var(--text-2);font-size:15px;margin-top:14px;max-width:320px}
.footer-brand .kw{color:var(--text-3);font-size:13px;margin-top:12px}
.site-footer h4{font-size:15px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:var(--text-2);font-size:15px}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  font-size:13px;color:var(--text-3);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
}
@media (max-width:767px){
  :root{--sect:64px}
  body{font-size:16px}
  .section{padding:64px 0}
  .hero{padding:44px 0 64px}
  .hero-sub{font-size:16.5px}
  .header-inner{height:66px}
  .drawer{inset:66px 0 0 0}
  .ladder-item .num{font-size:30px}
  .scroll-hint{display:block}
}
@media (min-width:768px) and (max-width:1199px){
  :root{--sect:78px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .btn:hover,.news-card:hover,.ladder-item:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg:#0B0A11;
  --surface:#14121D;
  --surface-2:linear-gradient(180deg,#171522,#121019);
  --primary:#14E0B0;
  --primary-2:#0FB08A;
  --accent:#7C5CFF;
  --hot:#FF7A45;
  --text:#E8E6F0;
  --text-2:#A8A3B8;
  --text-3:#6E6A80;
  --body:#DCD9E6;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(20,224,176,.45);
  --ok:#22C55E;
  --warn:#F59E0B;
  --err:#EF4444;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-tag:6px;
  --r-img:12px;
  --sh:0 8px 30px rgba(0,0,0,.45);
  --sh-hover:0 18px 40px rgba(0,0,0,.5);
  --gap-section:104px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease;}
a:hover{color:var(--primary-2);}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{color:var(--text);font-weight:700;margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;}
.container,.container-fluid{
  width:100%;
  padding-left:20px;
  padding-right:20px;
  margin-left:auto;
  margin-right:auto;
  max-width:1320px;
}
@media (max-width:1399px){.container{max-width:1140px;}}
@media (max-width:1199px){.container{max-width:960px;}}
@media (max-width:991px){.container{max-width:720px;}}
@media (max-width:767px){.container{max-width:100%;padding-left:20px;padding-right:20px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(11,10,17,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,0),var(--primary) 22%,var(--accent) 78%,rgba(124,92,255,0));
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  min-height:74px;
}
.logo{display:flex;flex-direction:column;line-height:1.15;text-decoration:none;}
.logo-main{
  font-size:23px;
  font-weight:800;
  letter-spacing:.02em;
  background:linear-gradient(92deg,var(--primary) 0%,#6FF3D6 42%,var(--accent) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.logo-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.28em;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  color:var(--text-2);
  font-size:15.5px;
  border-radius:8px;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:5px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.main-nav a:hover{color:var(--text);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--primary);text-shadow:0 0 12px rgba(20,224,176,.65);}
.main-nav a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(20,224,176,.7);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background-color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04241C;
  box-shadow:0 6px 20px rgba(20,224,176,.22);
}
.btn-primary:hover{transform:translateY(-1px);color:#04241C;box-shadow:0 10px 28px rgba(20,224,176,.42);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--line-2);color:var(--primary);transform:translateY(-1px);}
.btn-hot{background:var(--hot);color:#2A1004;box-shadow:0 6px 20px rgba(255,122,69,.25);}
.btn-hot:hover{transform:translateY(-1px);color:#2A1004;box-shadow:0 10px 28px rgba(255,122,69,.42);}
.btn-sm{padding:9px 18px;font-size:14.5px;}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:44px 0 46px;
  background-image:linear-gradient(180deg,rgba(11,10,17,.72),rgba(11,10,17,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb-nav{font-size:13px;color:var(--text-3);margin-bottom:20px;line-height:1.7;}
.breadcrumb-nav a{color:var(--text-3);}
.breadcrumb-nav a:hover{color:var(--primary);}
.breadcrumb-nav .sep{margin:0 8px;color:var(--text-3);}
.breadcrumb-nav .current{color:var(--text);}
.tag{
  display:inline-block;
  font-size:12px;
  line-height:1;
  padding:7px 10px;
  border-radius:var(--r-tag);
  color:var(--primary);
  background:rgba(20,224,176,.12);
  border:1px solid rgba(20,224,176,.3);
  margin-bottom:18px;
}
.article-hero h1{
  font-size:clamp(26px,4vw,35px);
  line-height:1.35;
  max-width:900px;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.article-meta .bar{
  width:1px;
  height:12px;
  background:rgba(255,255,255,.18);
  display:inline-block;
}

/* ============ 正文布局 ============ */
.article-section{padding:72px 0 88px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,800px) 240px;justify-content:center;}
}
.article-content{
  font-size:17px;
  line-height:1.9;
  color:var(--body);
  max-width:800px;
  margin:0 auto;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-content p{margin:0 0 1.4em;}
.article-content > p:first-of-type{color:#F1EFF8;font-weight:500;}
.article-content h2{
  font-size:clamp(22px,3vw,28px);
  line-height:1.4;
  margin:40px 0 18px;
  padding-left:14px;
  border-left:4px solid var(--primary);
}
.article-content h3{font-size:20px;line-height:1.45;margin:28px 0 14px;}
.article-content h4{font-size:17.5px;margin:22px 0 10px;}
.article-content ul,.article-content ol{margin:1.2em 0;padding-left:1.4em;}
.article-content li{margin:.5em 0;}
.article-content ul{list-style:none;padding-left:1.3em;}
.article-content ul > li{position:relative;}
.article-content ul > li::before{
  content:"";
  position:absolute;
  left:-16px;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:1px;
  background:var(--primary);
}
.article-content ol{list-style:decimal;}
.article-content ol > li::marker{color:var(--primary);font-weight:700;}
.article-content blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--primary);
  background:rgba(20,224,176,.05);
  border-radius:0 10px 10px 0;
  color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  border-radius:var(--r-img);
  margin:1.7em auto;
  max-width:100%;
  height:auto;
}
.article-content figure{margin:1.7em 0;}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.7em 0;
  font-size:16px;
}
.article-content th,.article-content td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-content th{background:rgba(20,224,176,.1);color:var(--text);font-weight:700;}
.article-content a{color:var(--primary);border-bottom:1px solid rgba(20,224,176,.35);}
.article-content a:hover{border-bottom-color:var(--primary);}
.article-content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14.5px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 6px;
  color:#9FF3DC;
}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* 侧栏 */
.article-side{display:none;}
@media (min-width:1200px){.article-side{display:block;}}
.side-inner{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh);
}
.side-card h3{font-size:15.5px;margin-bottom:14px;letter-spacing:.04em;}
.side-card ul{list-style:none;display:flex;flex-direction:column;gap:12px;}
.side-card ul a{font-size:14.5px;color:var(--text-2);line-height:1.7;display:block;}
.side-card ul a:hover{color:var(--primary);}
.side-note{font-size:13.5px;color:var(--text-3);line-height:1.8;}

/* 标签行 + 返回 */
.article-foot{
  max-width:800px;
  margin:52px auto 0;
  padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag-list span{
  font-size:12.5px;
  padding:7px 12px;
  border-radius:var(--r-tag);
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.tag-list span:hover{color:var(--primary);border-color:var(--line-2);}

/* 空态 */
.empty-state{
  max-width:800px;
  margin:0 auto;
  padding:52px 32px;
  text-align:center;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
}
.empty-state .icon{
  width:56px;height:56px;
  margin:0 auto 20px;
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;
  color:var(--primary);
  background:rgba(20,224,176,.1);
  border:1px solid rgba(20,224,176,.28);
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

/* 相关推荐 */
.related-section{padding:0 0 96px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3;}
.section-head p{color:var(--text-2);font-size:15px;margin:10px 0 0;}
.section-head .more{font-size:15px;color:var(--primary);white-space:nowrap;}
.section-head .more:hover{color:var(--primary-2);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1199px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:767px){.card-grid{grid-template-columns:1fr;}}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--sh-hover);}
.post-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#100E19;
}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;}
.post-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,10,17,0) 40%,rgba(11,10,17,.72));
}
.post-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-card .cat{
  align-self:flex-start;
  font-size:12px;
  padding:5px 9px;
  border-radius:var(--r-tag);
  color:var(--primary);
  background:rgba(20,224,176,.12);
  border:1px solid rgba(20,224,176,.3);
}
.post-card h3{font-size:17.5px;line-height:1.6;margin:0;}
.post-card h3 a{color:var(--text);}
.post-card h3 a:hover{color:var(--primary);}
.post-card .desc{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card .meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;gap:10px;align-items:center;}

/* CTA 条 */
.cta-band{
  margin:0 0 96px;
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(20,224,176,.09),rgba(124,92,255,.09));
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.cta-band p{margin:0;color:var(--text-2);font-size:15.5px;}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);
  background:#0A0910;
  padding:64px 0 26px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,0),var(--primary) 30%,var(--accent) 70%,rgba(124,92,255,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:16px 0 12px;max-width:340px;}
.footer-brand .kw{font-size:13px;color:var(--text-3);}
.site-footer h4{font-size:15px;color:var(--text);margin-bottom:18px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14.5px;color:var(--text-2);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:var(--text-3);
}

@media (max-width:991px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    left:0;right:0;top:75px;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 22px 40px;
    background:rgba(11,10,17,.98);
    backdrop-filter:blur(16px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    z-index:80;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;}
  .main-nav a{
    padding:18px 2px;
    font-size:17px;
    border-radius:0;
    border-bottom:1px solid rgba(20,224,176,.18);
    color:var(--text);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--primary);}
  .nav-cta{display:none;}
  .article-section{padding:56px 0 64px;}
  .related-section{padding-bottom:64px;}
  .cta-band{margin-bottom:64px;padding:28px 24px;}
}
@media (max-width:767px){
  .article-hero{padding:32px 0 34px;}
  .article-meta{font-size:12.5px;gap:9px;}
  .article-content{font-size:16.5px;line-height:1.88;}
  .article-content h2{margin-top:32px;padding-left:12px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .article-foot{flex-direction:column;align-items:flex-start;gap:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --bg:#0B0A11;
  --surface:#14121D;
  --surface-2:linear-gradient(180deg,#171522,#121019);
  --primary:#14E0B0;
  --primary-2:#0FB08A;
  --accent:#7C5CFF;
  --hot:#FF7A45;
  --text:#E8E6F0;
  --body:#DCD9E6;
  --text-2:#A8A3B8;
  --text-3:#6E6A80;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(20,224,176,.45);
  --ok:#22C55E;
  --warn:#F59E0B;
  --err:#EF4444;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-tag:6px;
  --r-img:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --sec:110px;
  --sec-t:72px;
  --sec-m:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease,opacity .25s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:750;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}

.container{width:100%;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{max-width:720px;}}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1140px;}}
@media (min-width:1400px){.container{max-width:1320px;}}

.section{padding:var(--sec) 0;position:relative;}
@media (max-width:991px){.section{padding:var(--sec-t) 0;}}
@media (max-width:767px){.section{padding:var(--sec-m) 0;}}

.sec-head{margin-bottom:38px;max-width:760px;}
.sec-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  background:rgba(20,224,176,.12);
  border:1px solid rgba(20,224,176,.3);
  border-radius:var(--r-tag);
  padding:5px 12px;
  margin-bottom:16px;
  text-transform:uppercase;
}
.sec-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:14px;}
.sec-head p{color:var(--text-2);font-size:16px;line-height:1.85;margin:0;}

/* ===== header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(11,10,17,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,0) 0%,rgba(20,224,176,.9) 32%,rgba(124,92,255,.9) 68%,rgba(124,92,255,0) 100%);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.logo{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{
  font-size:21px;
  font-weight:800;
  letter-spacing:.02em;
  background:linear-gradient(90deg,var(--primary) 0%,var(--accent) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:0 0 22px rgba(20,224,176,.18);
}
.logo-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.16em;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:15.5px;
  color:var(--text-2);
  border-radius:8px;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
  border-radius:2px;
}
.main-nav a:hover{color:var(--text);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{
  color:var(--primary);
  text-shadow:0 0 12px rgba(20,224,176,.55);
}
.main-nav a.active::after{transform:scaleX(1);}
.header-cta{display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  font-size:15.5px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background-color .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#06231B;
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(20,224,176,.3);color:#06231B;}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--line-2);color:var(--primary);transform:translateY(-1px);}
.btn-hot{
  background:var(--hot);
  color:#2A1005;
  font-weight:700;
}
.btn-hot:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,122,69,.3);color:#2A1005;}
.btn-sm{padding:8px 16px;font-size:14.5px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:transparent;
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

@media (max-width:1199px){
  .main-nav a{padding:10px 10px;font-size:15px;}
}
@media (max-width:991px){
  .main-nav{
    position:fixed;
    inset:74px 0 0 0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 20px 32px;
    background:rgba(11,10,17,.98);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    overflow-y:auto;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{
    padding:18px 4px;
    font-size:17px;
    border-bottom:1px solid rgba(20,224,176,.16);
    border-radius:0;
    color:var(--text);
  }
  .main-nav a::after{display:none;}
  .nav-toggle{display:block;}
  .header-cta .btn{display:none;}
}

/* ===== breadcrumb ===== */
.crumb-bar{padding:22px 0 0;}
.crumb{
  font-size:13px;
  color:var(--text-3);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:rgba(255,255,255,.18);}
.crumb .cur{color:var(--text);}

/* ===== hero ===== */
.guide-hero{
  position:relative;
  min-height:360px;
  display:flex;
  align-items:center;
  overflow:hidden;
  padding:52px 0 56px;
  border-bottom:1px solid var(--line);
}
.guide-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(90deg,rgba(11,10,17,.96) 0%,rgba(11,10,17,.88) 48%,rgba(11,10,17,.7) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  z-index:0;
}
.guide-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;
  z-index:1;
  pointer-events:none;
}
.guide-hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.guide-hero h1{
  font-size:clamp(26px,4.4vw,42px);
  line-height:1.28;
  margin-bottom:18px;
}
.guide-hero h1 em{
  font-style:normal;
  color:var(--primary);
  text-shadow:0 0 22px rgba(20,224,176,.35);
}
.hero-lead{
  font-size:17px;
  color:var(--text-2);
  max-width:56ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.hero-visual img{width:100%;height:230px;object-fit:cover;}
.hero-visual .halo{
  position:absolute;
  width:240px;height:240px;
  right:-70px;top:-70px;
  background:radial-gradient(circle,rgba(20,224,176,.35) 0%,rgba(20,224,176,0) 68%);
  pointer-events:none;
}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:38px;
  border-top:1px solid var(--line);
  padding-top:20px;
}
.hero-metrics div{padding-right:18px;border-right:1px solid var(--line);}
.hero-metrics div:last-child{border-right:0;}
.hero-metrics b{
  display:block;
  font-family:ui-monospace,"DIN Alternate",Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:24px;
  color:var(--text);
  font-weight:700;
}
.hero-metrics span{font-size:13.5px;color:var(--text-3);}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .guide-hero{padding:42px 0 46px;min-height:0;}
  .hero-visual img{height:210px;}
}
@media (max-width:520px){
  .hero-metrics{grid-template-columns:1fr;gap:16px;}
  .hero-metrics div{border-right:0;border-bottom:1px solid var(--line);padding:0 0 12px;}
  .hero-metrics div:last-child{border-bottom:0;padding-bottom:0;}
  .hero-actions .btn{width:100%;}
}

/* ===== alternating blocks ===== */
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  align-items:center;
}
.alt-row + .alt-row{margin-top:78px;}
.alt-row.reverse .alt-media{order:2;}
.alt-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  position:relative;
}
.alt-media img{width:100%;height:320px;object-fit:cover;}
.alt-media::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:44%;
  background:linear-gradient(180deg,rgba(11,10,17,0) 0%,rgba(11,10,17,.85) 100%);
  pointer-events:none;
}
.alt-body h3{font-size:clamp(19px,2.2vw,23px);margin-bottom:14px;}
.alt-body p{color:var(--text-2);margin-bottom:1.1em;}
.alt-list{margin-top:18px;}
.alt-list li{
  position:relative;
  padding-left:22px;
  color:var(--text-2);
  font-size:15.5px;
  margin-bottom:10px;
}
.alt-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  border-radius:2px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
}
.alt-note{
  display:inline-block;
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
  border-left:2px solid var(--line-2);
  padding-left:10px;
}
@media (max-width:991px){
  .alt-row{grid-template-columns:1fr;gap:26px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-row + .alt-row{margin-top:56px;}
  .alt-media img{height:230px;}
}

/* ===== numbered points ===== */
.num-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.num-item{
  padding:30px 30px 30px 0;
  border-bottom:1px solid var(--line);
  display:flex;
  gap:20px;
}
.num-item:nth-child(odd){
  border-right:1px solid var(--line);
  padding-right:36px;
}
.num-item:nth-child(even){padding-left:36px;}
.num-idx{
  flex:0 0 auto;
  font-family:ui-monospace,"DIN Alternate",Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:22px;
  font-weight:700;
  color:var(--primary);
  opacity:.85;
  min-width:44px;
}
.num-item h3{font-size:18.5px;margin-bottom:8px;}
.num-item p{font-size:15.5px;color:var(--text-2);margin:0;}
@media (max-width:767px){
  .num-grid{grid-template-columns:1fr;}
  .num-item{padding:24px 0 !important;border-right:0 !important;}
}

/* ===== faq ===== */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.faq-item:hover{border-color:var(--line-2);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 52px 18px 20px;
  position:relative;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:20px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--text-3);
  transition:color .25s ease;
}
.faq-item[open]{border-left:3px solid var(--primary);}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::after{content:"−";color:var(--primary);}
.faq-item .faq-body{
  padding:0 20px 20px;
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.85;
}
@media (max-width:991px){
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
}

/* ===== CTA bar ===== */
.cta-bar{
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  background:var(--surface-2);
  padding:34px 38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  position:relative;
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.cta-bar h3{font-size:clamp(19px,2.3vw,24px);margin-bottom:8px;}
.cta-bar p{color:var(--text-2);margin:0;font-size:15.5px;}
.cta-bar .cta-actions{flex:0 0 auto;display:flex;gap:12px;flex-wrap:wrap;}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:20px;}
  .cta-bar .cta-actions{width:100%;}
  .cta-bar .cta-actions .btn{width:100%;}
}

/* ===== footer ===== */
.site-footer{
  margin-top:0;
  background:#0A0910;
  padding:64px 0 0;
  border-top:1px solid transparent;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,224,176,0),rgba(20,224,176,.85),rgba(124,92,255,.85),rgba(124,92,255,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:15px;color:var(--text-2);margin-bottom:12px;line-height:1.8;}
.footer-brand .kw{font-size:13px;color:var(--text-3);margin:0;}
.site-footer h4{
  font-size:15px;
  color:var(--text);
  margin-bottom:16px;
  font-weight:700;
  letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:15px;color:var(--text-2);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#0B0A11;
  --surface:#14121D;
  --surface-2:linear-gradient(180deg,#171522,#121019);
  --primary:#14E0B0;
  --primary-2:#0FB08A;
  --accent:#7C5CFF;
  --hot:#FF7A45;
  --text:#E8E6F0;
  --text-2:#DCD9E6;
  --text-3:#6E6A80;
  --line:rgba(255,255,255,.07);
  --line-2:rgba(20,224,176,.45);
  --ok:#22C55E;
  --warn:#F59E0B;
  --err:#EF4444;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-tag:6px;
  --radius-img:12px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --section-gap:110px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono: ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:800;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(26px,5vw,40px);line-height:1.25}
h2{font-size:clamp(22px,3vw,31px)}
h3{font-size:clamp(18px,1.6vw,21px);font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,border-color .25s ease}
a:hover{color:var(--primary)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{
  width:100%;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{max-width:720px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1140px}}
@media (min-width:1400px){.container{max-width:1320px}}
section{position:relative}
.section{padding:var(--section-gap) 0}
@media (max-width:991px){:root{--section-gap:72px}.section{padding:72px 0}}
@media (max-width:767px){:root{--section-gap:56px}.section{padding:56px 0}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(11,10,17,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
  opacity:.75;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:74px;
}
.logo{display:flex;flex-direction:column;line-height:1.1;flex-shrink:0}
.logo-main{
  font-size:21px;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(92deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.logo-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.16em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  color:var(--text-2);
  font-size:15.5px;
  border-radius:8px;
  transition:color .25s ease,background .25s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
  border-radius:2px;
}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary);text-shadow:0 0 12px rgba(20,224,176,.55)}
.main-nav a.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(20,224,176,.7)}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  color:var(--text);cursor:pointer;
  align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--line-2);color:var(--primary)}
@media (max-width:991px){
  .main-nav{
    position:fixed;inset:74px 0 0 0;
    background:rgba(11,10,17,.98);
    backdrop-filter:blur(18px);
    flex-direction:column;align-items:stretch;gap:0;
    padding:16px 22px 40px;
    transform:translateY(-12px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    overflow-y:auto;
  }
  .main-nav.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .main-nav a{
    padding:18px 4px;font-size:17px;border-radius:0;
    border-bottom:1px solid rgba(20,224,176,.18);
  }
  .main-nav a::after{left:4px;right:auto;width:34px;bottom:8px}
  .nav-toggle{display:inline-flex}
  .header-cta .btn-primary-glow{display:none}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background .25s ease;
  white-space:nowrap;
}
.btn-primary-glow{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#08201A;
  box-shadow:0 6px 22px rgba(20,224,176,.22);
}
.btn-primary-glow:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(20,224,176,.42);
  color:#08201A;
}
.btn-ghost{
  background:transparent;border-color:var(--line);color:var(--text-2);
}
.btn-ghost:hover{border-color:var(--line-2);color:var(--primary);transform:translateY(-2px)}
.btn-hot{
  background:var(--hot);color:#2B1206;font-weight:800;
}
.btn-hot:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,122,69,.35);color:#2B1206}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px}
.btn-block{width:100%}

/* ============ 标签 / 徽标 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:4px 10px;border-radius:var(--radius-tag);
  background:rgba(20,224,176,.12);
  color:var(--primary);
  border:1px solid rgba(20,224,176,.3);
}
.tag-accent{background:rgba(124,92,255,.14);color:#B7A6FF;border-color:rgba(124,92,255,.34)}
.tag-hot{background:rgba(255,122,69,.12);color:var(--hot);border-color:rgba(255,122,69,.32)}

/* ============ 面包屑 ============ */
.crumb{
  font-size:13px;color:var(--text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:18px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .cur{color:var(--text)}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  padding:56px 0 60px;
  min-height:360px;
  display:flex;align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(20,224,176,.18),transparent 62%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.hero-inner h1{margin-bottom:18px}
.hero-inner h1 .hl{
  color:var(--primary);
  text-shadow:0 0 18px rgba(20,224,176,.35);
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:660px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.slash-line{
  height:1px;width:100%;
  background:linear-gradient(90deg,var(--primary),rgba(124,92,255,.6),transparent);
  margin-top:34px;
  transform:skewX(-24deg);
  transform-origin:left;
  opacity:.8;
}
@media (max-width:767px){
  .cat-hero{padding:40px 0 44px;min-height:0}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .slash-line{transform:none}
}

/* ============ 图文交替 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;
  gap:56px;align-items:center;
}
.split + .split{margin-top:88px}
.split-figure{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.split-figure img{
  width:100%;height:340px;object-fit:cover;
  border-radius:var(--radius-img);
  transition:transform .25s ease;
}
.split-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,10,17,.05),rgba(11,10,17,.62));
  pointer-events:none;
}
.split-figure:hover img{transform:translateY(-3px) scale(1.01)}
.split-body h2{margin-bottom:18px}
.split-body .lead{color:var(--text-2);margin-bottom:22px}
.check-list{display:grid;gap:12px;margin-bottom:26px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15.5px;color:var(--text-2);
}
.check-list li i{color:var(--primary);font-size:14px;margin-top:7px}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:30px}
  .split + .split{margin-top:64px}
  .split-figure img{height:260px}
}
@media (max-width:767px){
  .split-figure img{height:220px}
}

/* ============ 卡片要点区 ============ */
.sec-head{max-width:760px;margin-bottom:38px}
.sec-head .eyebrow{
  font-size:12.5px;letter-spacing:.2em;color:var(--primary);
  text-transform:uppercase;display:block;margin-bottom:12px;font-weight:700;
}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--text-2)}
.card-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.point-card{
  position:relative;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px 28px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  overflow:hidden;
}
.point-card::before{
  content:"";position:absolute;top:0;left:0;width:56px;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.point-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-2);
  box-shadow:var(--shadow-hover);
}
.point-card .idx{
  font-family:var(--mono);font-size:13px;color:var(--text-3);
  letter-spacing:.14em;display:block;margin-bottom:16px;
}
.point-card h3{margin-bottom:12px}
.point-card p{color:var(--text-2);font-size:15.5px;margin:0}
.point-card .card-icon{
  width:42px;height:42px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(20,224,176,.1);
  border:1px solid rgba(20,224,176,.28);
  color:var(--primary);font-size:17px;margin-bottom:18px;
}
@media (max-width:767px){.card-grid{grid-template-columns:1fr}}

/* ============ 节奏条 ============ */
.rhythm{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.rhythm div{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.rhythm div:last-child{border-right:0}
.rhythm .num{
  font-family:var(--mono);font-size:26px;color:var(--primary);
  font-weight:700;font-variant-numeric:tabular-nums;
  display:block;margin-bottom:8px;
}
.rhythm .lbl{font-size:14.5px;color:var(--text-2);line-height:1.6}
@media (max-width:991px){
  .rhythm{grid-template-columns:repeat(2,1fr)}
  .rhythm div:nth-child(2n){border-right:0}
  .rhythm div:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media (max-width:520px){
  .rhythm{grid-template-columns:1fr}
  .rhythm div{border-right:0;border-bottom:1px solid var(--line)}
  .rhythm div:last-child{border-bottom:0}
}

/* ============ FAQ ============ */
.faq-shell{display:grid;grid-template-columns:340px 1fr;gap:52px;align-items:start}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{font-size:15.5px;color:var(--text-2)}
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:var(--line-2);box-shadow:0 0 0 1px rgba(20,224,176,.14)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;
  font-size:16.5px;font-weight:700;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .25s ease,background .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--text-3);
  flex-shrink:0;transition:color .25s ease;
}
.faq-item[open] summary{color:var(--primary);border-left:3px solid var(--primary);padding-left:21px}
.faq-item[open] summary::after{content:"−";color:var(--primary)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 24px 22px;font-size:15.5px;color:var(--text-2)}
@media (max-width:991px){
  .faq-shell{grid-template-columns:1fr;gap:30px}
}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--surface-2);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  padding:30px 34px;
  box-shadow:0 0 34px rgba(20,224,176,.1);
}
.cta-bar h3{margin-bottom:8px}
.cta-bar p{margin:0;font-size:15px;color:var(--text-2)}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:stretch;padding:26px 22px}
  .cta-bar .btn{width:100%}
}

/* ============ 表单 ============ */
.contact-shell{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact-info h2{margin-bottom:16px}
.contact-info p{color:var(--text-2)}
.info-points{display:grid;gap:14px;margin-top:26px}
.info-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text-2)}
.info-points li i{color:var(--primary);margin-top:7px;font-size:14px}
.form-card{
  background:var(--surface-2);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  padding:32px 30px;
  box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.field label{font-size:14.5px;color:var(--text);font-weight:600}
.field label .req{color:var(--hot);margin-left:4px}
.field input,.field select,.field textarea{
  background:#14121D;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  height:48px;padding:0 15px;
  color:var(--text);
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.field textarea{height:118px;padding:13px 15px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(20,224,176,.18);
}
.form-actions{display:flex;justify-content:flex-end;margin-top:6px}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px}
.form-alert{
  display:none;
  margin-bottom:20px;padding:12px 16px;border-radius:var(--radius-btn);
  font-size:14.5px;
  background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.34);color:#8BE7AE;
}
.form-alert.show{display:block}
@media (max-width:991px){
  .contact-shell{grid-template-columns:1fr;gap:32px}
}
@media (max-width:560px){
  .form-row{grid-template-columns:1fr;gap:0}
  .form-actions .btn{width:100%}
  .form-card{padding:26px 20px}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--surface);
  border-top:1px solid var(--line);
  padding:74px 0 0;
  margin-top:20px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:52px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:15px;color:var(--text-2);margin-bottom:14px}
.footer-brand .kw{font-size:13px;color:var(--text-3)}
.site-footer h4{font-size:15.5px;margin-bottom:18px;color:var(--text)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:var(--text-2);font-size:15px}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:56px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}