/* roulang page: index */
:root{
  --bg:#121210;
  --bg-deep:#0c0d0b;
  --panel:#1b1c18;
  --panel-2:#25251f;
  --panel-3:#2d2c25;
  --text:#f2f0e8;
  --muted:#a9aa9d;
  --dim:#73766c;
  --line:rgba(242,240,232,.13);
  --acid:#d9f45c;
  --acid-soft:rgba(217,244,92,.14);
  --coral:#ec8370;
  --coral-soft:rgba(236,131,112,.14);
  --shadow:0 22px 56px rgba(0,0,0,.28);
  --radius-lg:22px;
  --radius:15px;
  --radius-sm:9px;
  --ease:180ms ease-out;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  line-height:1.8;font-size:16px;letter-spacing:.01em;
}
body:before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.16;z-index:-1;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:42px 42px;
}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),transform var(--ease),background var(--ease)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
::selection{background:var(--acid);color:#171810}
.grid-container{max-width:1220px;padding-left:22px;padding-right:22px}
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(18,18,16,.92);
  border-bottom:1px solid rgba(242,240,232,.09);backdrop-filter:blur(14px);
}
.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;white-space:nowrap;letter-spacing:.02em}
.brand-mark{width:30px;height:30px;border:1px solid var(--acid);border-radius:50%;position:relative;box-shadow:0 0 15px rgba(217,244,92,.17)}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;left:7px;width:14px;background:var(--acid);border-radius:10px}
.brand-mark:before{height:2px;top:10px;box-shadow:0 6px 0 var(--acid),0 12px 0 var(--acid)}
.brand-mark:after{width:2px;height:16px;left:14px;top:7px;opacity:.7}
.desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
.desktop-nav a{position:relative;padding:23px 13px 20px;color:var(--muted);font-size:14px}
.desktop-nav a:hover{color:var(--text)}
.desktop-nav a.active{color:var(--text)}
.desktop-nav a.active:after{content:"";position:absolute;bottom:0;left:13px;right:13px;height:2px;background:var(--acid);box-shadow:0 0 12px var(--acid)}
.nav-cta,.button-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--acid);
  background:var(--acid);color:#171810;border-radius:999px;font-weight:800;padding:11px 17px;line-height:1.3;
  box-shadow:0 8px 22px rgba(217,244,92,.12);transition:transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.nav-cta:hover,.button-main:hover{color:#10110b;background:#e6ff75;transform:translateY(-3px);box-shadow:0 12px 28px rgba(217,244,92,.2)}
.button-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);color:var(--text);padding:11px 17px;border-radius:999px;font-weight:700;background:transparent}
.button-outline:hover{border-color:var(--acid);color:var(--acid);transform:translateY(-2px)}
.button-text{display:inline-flex;align-items:center;gap:7px;color:var(--acid);font-weight:700;border-bottom:1px solid transparent}
.button-text:hover{border-color:var(--acid)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--text);padding:8px 12px;border-radius:8px}
.mobile-menu{display:none;padding:8px 22px 18px;border-top:1px solid var(--line);background:var(--panel)}
.mobile-menu a{display:block;padding:12px 4px;color:var(--muted);border-bottom:1px solid rgba(255,255,255,.06)}
.mobile-menu a:last-child{border:0}
.mobile-menu a.active{color:var(--acid)}
.mobile-menu.is-open{display:block}
main{overflow:hidden}
section{padding:96px 0}
.hero{padding:44px 0 62px}
.eyebrow{display:flex;align-items:center;gap:9px;color:var(--acid);font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--acid);box-shadow:0 0 10px var(--acid)}
.hero-bento{display:grid;grid-template-columns:1.35fr .72fr .72fr;gap:14px;margin-top:18px}
.hero-main,.hero-mini{
  position:relative;overflow:hidden;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-lg);
}
.hero-main{padding:45px 44px;min-height:390px;grid-row:span 2;background:linear-gradient(135deg,#20211c 0%,#171815 72%)}
.hero-main:after{content:"";position:absolute;width:290px;height:290px;border:1px solid rgba(217,244,92,.21);border-radius:50%;right:-130px;bottom:-140px;box-shadow:0 0 0 26px rgba(217,244,92,.025),0 0 0 56px rgba(217,244,92,.018)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,4vw,60px);line-height:1.18;letter-spacing:-.035em;font-weight:800;max-width:740px;margin:15px 0 20px}
h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.025em;font-weight:800;margin-bottom:12px}
h3{font-size:20px;line-height:1.35;font-weight:800;margin-bottom:8px}
.hero-copy{max-width:700px;color:#c4c5b9;font-size:17px;line-height:1.9;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.hero-mini{padding:24px;min-height:188px;display:flex;flex-direction:column;justify-content:space-between}
.hero-mini:hover,.metric-card:hover,.matrix-card:hover,.compare-card:hover,.feature-card:hover{transform:translateY(-4px);border-color:rgba(217,244,92,.46)}
.track-label{color:var(--muted);font-size:13px}.track-num{font-size:32px;line-height:1;font-weight:800;font-variant-numeric:tabular-nums}
.wave{display:flex;align-items:center;gap:4px;height:42px;margin-top:12px}
.wave i{display:block;width:4px;background:var(--acid);border-radius:4px;opacity:.86}
.wave i:nth-child(1){height:11px}.wave i:nth-child(2){height:29px}.wave i:nth-child(3){height:18px}.wave i:nth-child(4){height:38px}.wave i:nth-child(5){height:22px}.wave i:nth-child(6){height:31px}.wave i:nth-child(7){height:14px}.wave i:nth-child(8){height:25px}
.progress{height:6px;margin:14px 0 0;background:#3a3a31;border-radius:99px;overflow:hidden}.progress span{display:block;height:100%;background:var(--acid);border-radius:inherit;box-shadow:0 0 12px rgba(217,244,92,.52)}
.status-bar{margin-top:14px;padding:13px 17px;border:1px solid var(--line);border-radius:12px;background:#181916;display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:4px 9px;font-size:12px;color:#d8d7ce;background:rgba(255,255,255,.025)}
.pill.acid{border-color:rgba(217,244,92,.35);color:var(--acid);background:var(--acid-soft)}
.dot{width:6px;height:6px;background:var(--acid);border-radius:50%;box-shadow:0 0 9px var(--acid)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
.section-copy{max-width:620px;color:var(--muted);margin:0;font-size:16px}
.section-side{font-size:13px;color:var(--dim);text-align:right}
.dashboard{background:linear-gradient(180deg,transparent 0%,rgba(32,33,29,.48) 100%)}
.metrics-grid{display:grid;grid-template-columns:1.15fr .85fr .9fr;grid-template-rows:170px 170px;gap:14px}
.metric-card,.matrix-card,.compare-card,.feature-card{
  border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);transition:var(--ease);box-shadow:inset 0 1px rgba(255,255,255,.025);
}
.metric-card{padding:22px;position:relative;overflow:hidden}
.metric-main{grid-row:span 2;background:linear-gradient(145deg,#292a22,#1d1e19)}
.metric-main .metric-value{font-size:64px;line-height:1;font-weight:800;letter-spacing:-.06em;margin:23px 0 8px;color:var(--acid);font-variant-numeric:tabular-nums}
.metric-value{font-size:34px;font-weight:800;line-height:1.1;margin:8px 0}
.metric-card small{color:var(--muted);display:block;line-height:1.65}
.metric-card .chapter{position:absolute;right:18px;top:14px;color:var(--dim);font-size:12px;font-family:monospace}
.ring{width:72px;height:72px;border-radius:50%;border:8px solid #44443a;border-top-color:var(--acid);border-right-color:var(--acid);float:right;margin:0 0 8px 14px}
.matrix{background:#171815}
.matrix-layout{display:grid;grid-template-columns:220px 1fr;gap:18px}
.matrix-index{border-left:1px solid var(--line);padding:3px 0 3px 16px;align-self:start}
.matrix-index a{display:block;padding:10px 0;color:var(--muted);font-size:14px}
.matrix-index a:first-child{color:var(--acid);font-weight:800}
.matrix-index a:hover{color:var(--text);padding-left:5px}
.matrix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.matrix-card{padding:21px;min-height:182px;position:relative;overflow:hidden;display:flex;flex-direction:column}
.matrix-card.featured{grid-column:span 2;background:#26271f;min-height:196px}
.matrix-card:before{content:"";position:absolute;right:-30px;top:-24px;width:125px;height:125px;border:1px solid rgba(217,244,92,.2);border-radius:50%}
.card-no{color:var(--acid);font-family:monospace;font-size:12px;letter-spacing:.12em}.matrix-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:3px 0 13px;max-width:510px}
.card-footer{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:8px}
.compare{background:var(--bg)}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;position:relative}
.compare-grid:before{content:"";position:absolute;top:40px;left:10%;right:10%;height:1px;background:var(--line);z-index:0}
.compare-card{padding:24px;position:relative;z-index:1}
.compare-card.active{border-color:rgba(217,244,92,.52);box-shadow:0 0 0 1px rgba(217,244,92,.1),0 16px 42px rgba(0,0,0,.22)}
.state{display:inline-flex;border-radius:999px;padding:4px 9px;background:#34342d;font-size:12px;color:var(--muted)}.state.current{background:var(--acid-soft);color:var(--acid)}
.compare-card ul{list-style:none;margin:16px 0 0;padding:0}.compare-card li{position:relative;padding:8px 0 8px 17px;border-bottom:1px solid rgba(255,255,255,.06);color:var(--muted);font-size:14px}.compare-card li:before{content:"";position:absolute;left:0;top:18px;width:6px;height:6px;border:1px solid var(--acid);border-radius:50%}
.feature-strip{padding:0 0 8px}.feature-card{padding:20px;background:#20211d;min-height:145px}.feature-card p{color:var(--muted);font-size:14px;margin:8px 0 0}
.faq-section{background:#191a16}
.accordion{background:transparent;margin:0}.accordion-item{margin-bottom:10px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}.accordion-title{background:transparent;border:0;color:var(--text);padding:18px 54px 18px 22px;font-weight:800;font-size:16px;line-height:1.55}.accordion-title:hover,.accordion-title:focus{background:#25261f;color:var(--acid)}.accordion-title:before{right:22px;color:var(--acid);font-size:22px}.accordion-content{border:0;background:#22231e;color:var(--muted);padding:0 22px 20px 52px;line-height:1.85}.faq-no{display:inline-block;color:var(--acid);font-family:monospace;font-size:12px;margin-right:10px}
.cta-panel{position:relative;overflow:hidden;background:#22231d;border:1px solid rgba(217,244,92,.3);border-radius:var(--radius-lg);padding:42px;box-shadow:var(--shadow)}
.cta-panel:before{content:"01 02 03 04 05";position:absolute;right:-10px;bottom:-48px;color:rgba(217,244,92,.055);font-size:120px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.cta-panel p{color:var(--muted);max-width:510px}.expect{list-style:none;margin:20px 0 0;padding:0}.expect li{padding:7px 0;color:#d1d1c5;font-size:14px}.expect li:before{content:"✓";color:var(--acid);font-weight:800;margin-right:10px}
.form-box{position:relative;z-index:1;background:#181916;border:1px solid var(--line);padding:22px;border-radius:14px}.form-box label{display:block;font-size:13px;color:#d9d8ce;font-weight:700;margin-bottom:5px}.form-box input,.form-box select,.form-box textarea{width:100%;border:1px solid #44443a;border-radius:8px;background:#24251f;color:var(--text);padding:10px 12px;margin-bottom:13px;outline:none;transition:border-color var(--ease),box-shadow var(--ease)}.form-box textarea{min-height:82px;resize:vertical}.form-box input:focus,.form-box select:focus,.form-box textarea:focus{border-color:var(--acid);box-shadow:0 0 0 3px rgba(217,244,92,.13)}.checkline{display:flex!important;align-items:flex-start;gap:8px;color:var(--muted)!important;font-size:12px!important;font-weight:400!important;line-height:1.6}.checkline input{width:auto;margin:4px 0 0!important;accent-color:var(--acid)}.form-note{font-size:12px;color:var(--dim);margin:10px 0 0}
.site-footer{border-top:1px solid rgba(217,244,92,.28);background:var(--bg-deep);padding:52px 0 20px}.footer-title{font-size:13px;color:var(--acid);font-weight:800;margin-bottom:12px}.footer-copy{font-size:14px;color:var(--muted);max-width:290px}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin:7px 0}.footer-links a{font-size:14px;color:var(--muted);border-bottom:1px solid transparent}.footer-links a:hover{color:var(--acid);border-color:var(--acid)}.copyright{border-top:1px solid rgba(255,255,255,.07);margin-top:32px;padding-top:17px;color:var(--dim);font-size:12px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
:focus-visible{outline:3px solid var(--acid);outline-offset:3px}
@media(max-width:900px){section{padding:72px 0}.desktop-nav{display:none}.menu-toggle{display:block}.hero-bento{grid-template-columns:1fr 1fr}.hero-main{grid-column:span 2;grid-row:auto}.metrics-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.metric-main{grid-row:span 1}.matrix-layout{grid-template-columns:1fr}.matrix-index{display:flex;gap:18px;overflow:auto;border-left:0;border-bottom:1px solid var(--line);padding:0 0 9px}.matrix-index a{white-space:nowrap}.compare-grid{grid-template-columns:1fr}.compare-grid:before{left:26px;top:54px;bottom:54px;right:auto;width:1px;height:auto}.compare-card{padding-left:30px}}
@media(max-width:640px){.grid-container{padding-left:19px;padding-right:19px}.topbar{min-height:63px}.brand{font-size:14px}.brand-mark{width:26px;height:26px}.hero{padding-top:26px}.hero-main{padding:31px 24px;min-height:unset}.hero-bento{grid-template-columns:1fr}.hero-main{grid-column:auto}.hero-mini{min-height:155px}.hero-copy{font-size:16px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions a{text-align:center}.section-head{display:block}.section-side{text-align:left;margin-top:9px}.metrics-grid,.matrix-grid{grid-template-columns:1fr}.metric-main,.matrix-card.featured{grid-column:auto}.metric-card{min-height:155px}.matrix-card.featured{min-height:184px}.compare-grid{gap:12px}.cta-panel{padding:27px 20px}.footer-cell{margin-bottom:24px}.accordion-title{padding-left:16px;padding-right:48px}.accordion-content{padding-left:16px;padding-right:16px}.status-bar{align-items:flex-start}.nav-cta{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category2 */
:root{
 --bg:#121210;--bg-deep:#0c0d0b;--panel:#1b1c18;--panel-2:#25251f;--panel-3:#2d2c25;
 --text:#f2f0e8;--muted:#a9aa9d;--dim:#73766c;--line:rgba(242,240,232,.13);
 --acid:#d9f45c;--acid-soft:rgba(217,244,92,.14);--coral:#ec8370;--coral-soft:rgba(236,131,112,.14);
 --shadow:0 22px 56px rgba(0,0,0,.28);--radius-lg:22px;--radius:15px;--radius-sm:9px;--ease:180ms ease-out;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8;letter-spacing:.01em}
body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.16;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:42px 42px}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease)}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--acid);outline-offset:3px}.grid-container{max-width:1220px;padding-left:22px;padding-right:22px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(18,18,16,.92);border-bottom:1px solid rgba(242,240,232,.09);backdrop-filter:blur(14px)}
.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;white-space:nowrap;letter-spacing:.02em}
.brand-mark{position:relative;width:30px;height:30px;border:1px solid var(--acid);border-radius:50%;box-shadow:0 0 15px rgba(217,244,92,.17)}.brand-mark:before,.brand-mark:after{content:"";position:absolute;left:7px;width:14px;background:var(--acid);border-radius:10px}.brand-mark:before{top:10px;height:2px;box-shadow:0 6px 0 var(--acid),0 12px 0 var(--acid)}.brand-mark:after{top:7px;left:14px;width:2px;height:16px;opacity:.7}
.desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}.desktop-nav a{position:relative;padding:23px 13px 20px;color:var(--muted);font-size:14px}.desktop-nav a:hover{color:var(--text)}.desktop-nav a.active{color:var(--text)}.desktop-nav a.active:after{content:"";position:absolute;right:13px;bottom:0;left:13px;height:2px;background:var(--acid);box-shadow:0 0 12px var(--acid)}
.nav-cta,.button-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border:1px solid var(--acid);border-radius:999px;background:var(--acid);color:#171810;font-weight:800;line-height:1.3;box-shadow:0 8px 22px rgba(217,244,92,.12);transition:transform var(--ease),box-shadow var(--ease),background var(--ease)}
.nav-cta:hover,.button-main:hover{background:#e6ff75;color:#10110b;transform:translateY(-3px);box-shadow:0 12px 28px rgba(217,244,92,.2)}.button-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--text);font-weight:700}.button-outline:hover{border-color:var(--acid);color:var(--acid);transform:translateY(-2px)}.button-text{display:inline-flex;gap:7px;align-items:center;border-bottom:1px solid transparent;color:var(--acid);font-weight:700}.button-text:hover{border-color:var(--acid)}
.menu-toggle{display:none;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--text)}.mobile-menu{display:none;padding:8px 22px 18px;border-top:1px solid var(--line);background:var(--panel)}.mobile-menu a{display:block;padding:12px 4px;border-bottom:1px solid rgba(255,255,255,.06);color:var(--muted)}.mobile-menu a:last-child{border:0}.mobile-menu a.active{color:var(--acid)}.mobile-menu.is-open{display:block}
main{overflow:hidden}section{padding:92px 0}.eyebrow{display:flex;align-items:center;gap:9px;color:var(--acid);font-size:12px;font-weight:800;letter-spacing:.13em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--acid);box-shadow:0 0 10px var(--acid)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(34px,4.5vw,58px);line-height:1.16;letter-spacing:-.04em}h2{font-size:clamp(27px,3vw,39px);line-height:1.28;letter-spacing:-.03em}h3{font-size:20px;line-height:1.4}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-copy{max-width:620px;margin:0;color:var(--muted)}.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.025);color:#d8d7ce;font-size:12px}.pill.acid{border-color:rgba(217,244,92,.35);background:var(--acid-soft);color:var(--acid)}
.category-hero{padding:52px 0 68px}.crumbs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px;color:var(--dim);font-size:13px}.crumbs a:hover{color:var(--acid)}.crumbs span:last-child{color:var(--muted)}.hero-cover{position:relative;min-height:410px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);background:#20211d;box-shadow:var(--shadow)}.hero-cover:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(217,244,92,.09),transparent 45%),linear-gradient(315deg,rgba(236,131,112,.10),transparent 50%)}.cover-card{position:absolute;border:1px solid rgba(242,240,232,.16);background:#292a24;box-shadow:0 16px 30px rgba(0,0,0,.2)}.cover-a{width:46%;height:58%;left:10%;top:14%;border-radius:18px;background:linear-gradient(145deg,#393a2c,#1b1d18)}.cover-b{width:35%;height:42%;right:9%;top:11%;border-radius:15px;background:#29231f}.cover-c{width:39%;height:31%;right:16%;bottom:10%;border-radius:15px;background:#21241c}.cover-code{position:absolute;left:15%;bottom:16%;z-index:2;color:var(--acid);font-size:13px;font-weight:800;letter-spacing:.14em}.wave{position:absolute;right:10%;bottom:12%;display:flex;align-items:center;gap:5px;height:44px}.wave i{display:block;width:3px;background:var(--acid);border-radius:4px;opacity:.82}.wave i:nth-child(1){height:12px}.wave i:nth-child(2){height:28px}.wave i:nth-child(3){height:18px}.wave i:nth-child(4){height:39px}.wave i:nth-child(5){height:23px}.wave i:nth-child(6){height:32px}.wave i:nth-child(7){height:14px}
.hero-lead{max-width:650px;color:#c4c5b9;font-size:17px;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.hero-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.path-section{background:linear-gradient(180deg,transparent,#171815 40%,transparent)}.path-list{position:relative;max-width:970px;margin:0 auto}.path-list:before{content:"";position:absolute;top:30px;bottom:30px;left:28px;width:1px;background:linear-gradient(var(--acid),rgba(217,244,92,.08))}.path-item{position:relative;display:grid;grid-template-columns:58px 1fr auto;gap:20px;align-items:center;padding:23px;margin-bottom:14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);transition:var(--ease)}.path-item:hover{border-color:rgba(217,244,92,.45);transform:translateX(4px)}.step{position:relative;z-index:1;display:grid;place-items:center;width:56px;height:56px;border:1px solid var(--acid);border-radius:50%;background:var(--panel-2);color:var(--acid);font-weight:800;font-variant-numeric:tabular-nums}.path-item p{margin:5px 0 0;color:var(--muted)}.path-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:11px}
.wall-card{position:relative;display:flex;min-height:220px;overflow:hidden;flex-direction:column;justify-content:flex-end;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);transition:var(--ease)}.wall-card:hover{transform:translateY(-4px);border-color:rgba(217,244,92,.45);box-shadow:var(--shadow)}.wall-card.tall{min-height:352px;background:linear-gradient(155deg,#2c2d23,#191a17)}.wall-card.wide{min-height:278px;background:linear-gradient(125deg,#28251f,#1a1b17)}.wall-card:before{content:"";position:absolute;top:22px;right:22px;width:70px;height:70px;border:1px solid rgba(217,244,92,.3);border-radius:50%;box-shadow:0 0 0 15px rgba(217,244,92,.025)}.wall-card:after{content:"";position:absolute;right:24px;bottom:26px;width:80px;height:2px;background:var(--acid);box-shadow:0 9px 0 rgba(217,244,92,.55),0 18px 0 rgba(217,244,92,.22)}.wall-card>*{position:relative;z-index:1}.wall-card p{max-width:430px;margin-bottom:13px;color:var(--muted);line-height:1.75}.number{color:var(--acid);font-size:12px;font-weight:800;letter-spacing:.14em}
.notice-band{padding:25px 28px;border:1px solid rgba(217,244,92,.25);border-radius:var(--radius);background:var(--panel-2)}.notice-item{display:flex;gap:13px;align-items:flex-start}.notice-no{display:grid;flex:0 0 29px;place-items:center;width:29px;height:29px;border-radius:50%;background:var(--acid);color:#171810;font-size:12px;font-weight:800}.notice-item p{margin:0;color:var(--muted);font-size:14px}
.lower-grid{align-items:start}.related-list{border-top:1px solid var(--line)}.related-item{display:grid;grid-template-columns:48px 1fr auto;gap:16px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}.related-item strong{display:block;font-size:17px}.related-item p{margin:3px 0 0;color:var(--muted);font-size:14px}.related-no{color:var(--acid);font-weight:800}
.side-panel{padding:27px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel)}.side-panel p{color:var(--muted)}.accordion{margin:18px 0 0;background:transparent}.accordion-item{margin-bottom:8px;border:1px solid var(--line);border-radius:10px;overflow:hidden}.accordion-title{position:relative;border:0;background:var(--panel-2);color:var(--text);font-size:15px;line-height:1.5}.accordion-title:hover,.accordion-title:focus{background:#2c2d25;color:var(--acid)}.accordion-title:before{color:var(--acid)}.accordion-content{border:0;border-left:2px solid var(--acid);background:#1a1b17;color:var(--muted);line-height:1.8}
.mini-form{margin-top:22px}.mini-form label{display:block;margin-bottom:13px;color:#d8d7ce;font-size:14px;font-weight:700}.mini-form input,.mini-form textarea{width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#121310;color:var(--text);resize:vertical}.mini-form input:focus,.mini-form textarea:focus{border-color:var(--acid);box-shadow:0 0 0 3px var(--acid-soft);outline:0}.form-note{margin:12px 0 0;color:var(--dim);font-size:12px}
.switcher{padding:60px 0 98px}.switch-box{padding:34px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#24251f,#181916)}.switch-box p{max-width:670px;color:var(--muted)}.switch-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:21px}
.site-footer{padding:54px 0 20px;border-top:1px solid rgba(217,244,92,.28);background:var(--bg-deep)}.footer-cell{margin-bottom:25px}.footer-copy{max-width:330px;color:var(--muted);font-size:14px}.footer-title{margin-bottom:11px;color:var(--text);font-size:14px;font-weight:800}.footer-links{margin:0;padding:0;list-style:none}.footer-links li{margin:7px 0}.footer-links a{color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--acid);text-decoration:underline;text-underline-offset:4px}.copyright{display:flex;justify-content:space-between;gap:12px;padding-top:18px;border-top:1px solid var(--line);color:var(--dim);font-size:12px}
@media(max-width:1023px){section{padding:72px 0}.category-hero{padding:42px 0 52px}.hero-cover{min-height:330px}.wall-card.tall{min-height:270px}.path-item{grid-template-columns:58px 1fr}.path-item .button-text{grid-column:2}.section-head{align-items:start;flex-direction:column}.desktop-nav{display:none}.nav-cta{margin-left:auto}.menu-toggle{display:inline-block}}
@media(max-width:767px){body{font-size:16px}.grid-container{padding-left:19px;padding-right:19px}.brand{font-size:14px}.brand-mark{width:27px;height:27px}.nav-cta{display:none}.category-hero{padding-top:34px}.hero-cover{min-height:270px;margin-top:8px}h1{font-size:34px}.hero-lead{font-size:16px}.path-list:before{left:23px}.path-item{grid-template-columns:47px 1fr;gap:14px;padding:18px}.step{width:47px;height:47px}.path-item .button-text{font-size:14px}.notice-band{padding:20px}.notice-item{margin-bottom:18px}.notice-item:last-child{margin:0}.related-item{grid-template-columns:36px 1fr}.related-item .button-text{grid-column:2}.side-panel{margin-top:15px;padding:22px}.switch-box{padding:25px}.copyright{flex-direction:column}.hero-actions,.switch-actions{align-items:stretch}.hero-actions a,.switch-actions a{width:100%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
 --bg:#121210;--bg-deep:#0c0d0b;--panel:#1b1c18;--panel-2:#25251f;--panel-3:#2d2c25;
 --text:#f2f0e8;--muted:#a9aa9d;--dim:#73766c;--line:rgba(242,240,232,.13);
 --acid:#d9f45c;--acid-soft:rgba(217,244,92,.14);--coral:#ec8370;--coral-soft:rgba(236,131,112,.14);
 --shadow:0 22px 56px rgba(0,0,0,.28);--radius-lg:22px;--radius:15px;--radius-sm:9px;--ease:180ms ease-out;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.8;font-size:16px;letter-spacing:.01em}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.16;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:42px 42px}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),transform var(--ease),background var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--acid);outline-offset:3px}
img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer}
.grid-container{max-width:1220px;padding-left:22px;padding-right:22px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(18,18,16,.92);border-bottom:1px solid rgba(242,240,232,.09);backdrop-filter:blur(14px)}
.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;white-space:nowrap;letter-spacing:.02em}
.brand:hover{color:var(--acid)}
.brand-mark{width:30px;height:30px;border:1px solid var(--acid);border-radius:50%;position:relative;box-shadow:0 0 15px rgba(217,244,92,.17);flex:none}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;left:7px;width:14px;background:var(--acid);border-radius:10px}
.brand-mark:before{height:2px;top:10px;box-shadow:0 6px 0 var(--acid),0 12px 0 var(--acid)}
.brand-mark:after{width:2px;height:16px;left:14px;top:7px;opacity:.7}
.desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
.desktop-nav a{position:relative;padding:23px 13px 20px;color:var(--muted);font-size:14px}
.desktop-nav a:hover{color:var(--text)}
.desktop-nav a.active{color:var(--text)}
.desktop-nav a.active:after{content:"";position:absolute;bottom:0;left:13px;right:13px;height:2px;background:var(--acid);box-shadow:0 0 12px var(--acid)}
.nav-cta,.button-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--acid);background:var(--acid);color:#171810;border-radius:999px;font-weight:800;padding:11px 17px;line-height:1.3;box-shadow:0 8px 22px rgba(217,244,92,.12);transition:transform var(--ease),box-shadow var(--ease),background var(--ease)}
.nav-cta:hover,.button-main:hover{color:#10110b;background:#e6ff75;transform:translateY(-3px);box-shadow:0 12px 28px rgba(217,244,92,.2)}
.button-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);color:var(--text);padding:11px 17px;border-radius:999px;font-weight:700;background:transparent}
.button-outline:hover{border-color:var(--acid);color:var(--acid);transform:translateY(-2px)}
.button-text{display:inline-flex;align-items:center;gap:7px;color:var(--acid);font-weight:700;border-bottom:1px solid transparent}
.button-text:hover{border-color:var(--acid)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--text);padding:8px 12px;border-radius:8px}
.mobile-menu{display:none;padding:8px 22px 18px;border-top:1px solid var(--line);background:var(--panel)}
.mobile-menu a{display:block;padding:12px 4px;color:var(--muted);border-bottom:1px solid rgba(255,255,255,.06)}
.mobile-menu a:last-child{border:0}.mobile-menu a.active{color:var(--acid)}.mobile-menu.is-open{display:block}
main{overflow:hidden}
.page-head{padding:60px 0 38px;border-bottom:1px solid var(--line);background:linear-gradient(125deg,rgba(217,244,92,.06),transparent 39%)}
.breadcrumbs{margin:0 0 20px;padding:0;background:transparent;border:0;color:var(--dim);font-size:13px}
.breadcrumbs li:not(:last-child):after{color:var(--dim)}.breadcrumbs a{color:var(--muted)}.breadcrumbs a:hover{color:var(--acid)}
.eyebrow{display:flex;align-items:center;gap:9px;color:var(--acid);font-size:12px;font-weight:800;letter-spacing:.13em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--acid);box-shadow:0 0 10px var(--acid)}
h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,4.2vw,54px);line-height:1.2;letter-spacing:-.045em;margin:14px 0 16px;font-weight:800}
h2{font-size:clamp(25px,3vw,36px);line-height:1.3;letter-spacing:-.035em;margin-bottom:12px}h3{font-size:20px;line-height:1.45;margin-bottom:9px}
.lead{max-width:770px;color:#c6c7bb;font-size:17px;line-height:1.9;margin-bottom:0}
.status-rail{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:12px;color:#d8d7ce;background:rgba(255,255,255,.025)}.pill.acid{border-color:rgba(217,244,92,.35);color:var(--acid);background:var(--acid-soft)}
.content-zone{padding:70px 0 100px}
.side-index{position:sticky;top:94px;padding:20px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow)}
.side-index h2{font-size:15px;letter-spacing:.02em;margin:0 0 13px}.side-index a{display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid rgba(242,240,232,.08);font-size:14px;color:var(--muted)}.side-index a:last-child{border-bottom:0}.side-index a:hover{color:var(--acid);padding-left:8px}.index-no{font-size:11px;color:var(--acid);font-variant-numeric:tabular-nums}
.section-intro{margin-bottom:25px}.section-intro p{color:var(--muted);max-width:780px;margin-bottom:0}
.feature-track{display:grid;grid-template-columns:1.45fr .75fr;gap:14px;margin-bottom:20px}
.feature-main,.feature-mini,.content-item,.filter-bar,.note-band,.mini-form{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);box-shadow:inset 0 1px rgba(255,255,255,.025)}
.feature-main{min-height:300px;position:relative;overflow:hidden;padding:30px;background:linear-gradient(135deg,#292a22,#1b1c18 73%)}
.feature-main:after{content:"";position:absolute;width:290px;height:290px;border:1px solid rgba(217,244,92,.22);right:-95px;bottom:-160px;border-radius:50%;box-shadow:0 0 0 30px rgba(217,244,92,.025),0 0 0 62px rgba(217,244,92,.015)}
.track-code{position:absolute;right:24px;top:19px;color:var(--dim);font-size:12px;letter-spacing:.16em}.feature-main h2{max-width:520px;margin-top:52px;position:relative;z-index:1}.feature-main p{color:var(--muted);max-width:580px;position:relative;z-index:1}.progress{height:7px;background:#11120f;border-radius:99px;margin:25px 0 11px;position:relative;overflow:hidden;z-index:1}.progress span{display:block;height:100%;width:72%;background:var(--acid);box-shadow:0 0 12px rgba(217,244,92,.55)}.track-footer{display:flex;justify-content:space-between;color:var(--dim);font-size:12px;position:relative;z-index:1}
.feature-side{display:grid;gap:14px}.feature-mini{padding:19px;min-height:143px;position:relative;overflow:hidden}.feature-mini:hover,.content-item:hover{transform:translateY(-4px);border-color:rgba(217,244,92,.46)}.feature-mini:before{content:"";display:block;width:42px;height:24px;margin-bottom:14px;background:repeating-linear-gradient(90deg,var(--acid) 0 2px,transparent 2px 7px);opacity:.7}.feature-mini p{color:var(--muted);font-size:13px;line-height:1.65;margin:0}
.filter-bar{padding:14px 16px;margin:28px 0;display:flex;gap:10px;align-items:center;flex-wrap:wrap}.filter-label{font-size:13px;color:var(--muted);margin-right:4px}.filter-chip{background:transparent;color:var(--muted);border:1px solid transparent;border-radius:999px;padding:7px 11px;font-size:13px}.filter-chip:hover,.filter-chip.active{color:var(--acid);border-color:rgba(217,244,92,.31);background:var(--acid-soft)}
.content-list{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}.content-item{padding:20px;position:relative;transition:transform var(--ease),border-color var(--ease)}.content-item.wide{grid-column:span 2;display:grid;grid-template-columns:175px 1fr;gap:22px;align-items:center}.content-item p{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:14px}.item-visual{height:125px;border-radius:11px;border:1px solid rgba(242,240,232,.1);background:linear-gradient(135deg,#31332a,#1f201b);position:relative;overflow:hidden}.item-visual:before{content:"";position:absolute;inset:24px 16px;background:repeating-linear-gradient(90deg,rgba(217,244,92,.72) 0 3px,transparent 3px 9px);clip-path:polygon(0 44%,9% 44%,9% 15%,19% 15%,19% 70%,29% 70%,29% 28%,39% 28%,39% 86%,49% 86%,49% 10%,58% 10%,58% 66%,68% 66%,68% 38%,78% 38%,78% 77%,88% 77%,88% 23%,100% 23%,100% 100%,0 100%)}.item-visual:after{content:"";position:absolute;right:-8px;top:-8px;width:64px;height:64px;border:1px solid var(--coral);border-radius:50%;opacity:.55}.item-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:9px;font-size:12px;color:var(--dim)}.item-no{color:var(--acid);font-weight:800}.item-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:var(--dim)}
.note-band{margin-top:42px;padding:25px 27px;background:linear-gradient(100deg,#21221b,#191a16);position:relative;overflow:hidden}.note-band:after{content:"";position:absolute;right:4%;top:18px;width:180px;height:50px;opacity:.25;background:repeating-linear-gradient(90deg,var(--acid) 0 2px,transparent 2px 8px);clip-path:polygon(0 42%,8% 42%,8% 5%,15% 5%,15% 70%,24% 70%,24% 30%,32% 30%,32% 92%,40% 92%,40% 15%,48% 15%,48% 67%,56% 67%,56% 38%,64% 38%,64% 77%,72% 77%,72% 26%,80% 26%,80% 55%,88% 55%,88% 10%,100% 10%,100% 100%,0 100%)}.note-band h2{font-size:22px;margin-bottom:6px}.note-band p{color:var(--muted);margin:0;max-width:750px}
.faq-wrap{margin-top:54px}.faq-wrap .section-intro{display:flex;justify-content:space-between;align-items:end;gap:20px}.accordion{background:transparent;margin:0}.accordion-item{border:1px solid var(--line);border-bottom:0;background:var(--panel)}.accordion-item:first-child{border-radius:var(--radius) var(--radius) 0 0}.accordion-item:last-child{border-bottom:1px solid var(--line);border-radius:0 0 var(--radius) var(--radius)}.accordion-title{background:transparent;border:0;color:var(--text);padding:18px 48px 18px 21px;font-weight:700;line-height:1.5}.accordion-title:hover,.accordion-title:focus{background:#23241e;color:var(--acid)}.accordion-title:before{color:var(--acid);font-size:21px;right:21px;margin-top:-15px}.accordion-content{border:0;background:#20211c;color:var(--muted);padding:0 22px 21px 25px;line-height:1.85}.accordion-item.is-active .accordion-title{border-left:3px solid var(--acid);padding-left:18px}.faq-num{font-size:11px;color:var(--acid);margin-right:11px;letter-spacing:.1em}
.cta-small{margin-top:50px;border:1px solid rgba(217,244,92,.28);background:linear-gradient(130deg,#292b22,#181915);border-radius:var(--radius-lg);padding:34px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta-small h2{font-size:27px;margin:0 0 6px}.cta-small p{color:var(--muted);margin:0;max-width:650px}
.site-footer{border-top:1px solid var(--line);padding:52px 0 20px;background:var(--bg-deep);position:relative}.site-footer:before{content:"";position:absolute;top:-1px;left:0;width:100%;height:1px;background:linear-gradient(90deg,transparent,var(--acid),transparent);opacity:.7}.footer-cell{margin-bottom:28px}.footer-copy{color:var(--muted);font-size:14px;line-height:1.8;max-width:320px;margin-top:16px}.footer-title{font-size:13px;font-weight:800;color:var(--text);margin-bottom:10px}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin:7px 0}.footer-links a{color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--acid);text-decoration:underline;text-underline-offset:4px}.copyright{border-top:1px solid rgba(242,240,232,.09);padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:var(--dim);font-size:12px}
@media(max-width:900px){.desktop-nav{display:none}.menu-toggle{display:block}.topbar{gap:12px}.nav-cta{display:none}.content-zone{padding:52px 0 72px}.side-index{position:static;margin-bottom:25px;display:flex;align-items:center;gap:3px;overflow-x:auto;padding:10px}.side-index h2{display:none}.side-index a{white-space:nowrap;border:0;padding:8px 10px}.feature-track{grid-template-columns:1fr}.feature-side{grid-template-columns:1fr 1fr}.content-list{grid-template-columns:1fr}.content-item.wide{grid-column:auto}.cta-small{padding:28px}}
@media(max-width:640px){.grid-container{padding-left:19px;padding-right:19px}.brand{font-size:14px;max-width:238px;overflow:hidden}.brand-mark{width:27px;height:27px}.page-head{padding:39px 0 30px}h1{font-size:32px}.lead{font-size:16px}.feature-main{padding:23px;min-height:275px}.feature-main h2{font-size:26px;margin-top:42px}.feature-side{grid-template-columns:1fr}.content-item.wide{display:block}.content-item.wide .item-visual{margin-bottom:17px}.item-visual{height:112px}.filter-bar{padding:12px;gap:5px}.filter-label{width:100%;margin-bottom:3px}.note-band{padding:22px}.note-band:after{display:none}.faq-wrap .section-intro{display:block}.cta-small{display:block;padding:25px}.cta-small .button-main{margin-top:19px;width:100%}.site-footer{padding-top:42px}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}