/* roulang page: index */
:root{
      --bg:#080b18;--bg2:#0d1630;--panel:rgba(19,29,60,.62);--panel-solid:#111c3a;
      --line:rgba(182,220,255,.16);--line-strong:rgba(98,230,238,.48);
      --text:#f3f7ff;--muted:#aebbd5;--muted2:#7786a6;--cyan:#46dde7;
      --cyan-deep:#1db6c6;--coral:#ff7a6b;--violet:#6e79ea;--pink:#e957b7;
      --radius:20px;--radius-sm:13px;--shadow:0 22px 54px rgba(0,0,0,.34);
      --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.8;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;z-index:-3;background:
      radial-gradient(circle at 76% 4%,rgba(70,221,231,.12),transparent 24rem),
      radial-gradient(circle at 14% 29%,rgba(110,121,234,.16),transparent 29rem),
      linear-gradient(140deg,#080b18 0%,#0b1024 48%,#0d1630 100%)}
    body:after{content:"";position:fixed;inset:0;z-index:-2;opacity:.19;pointer-events:none;
      background-image:radial-gradient(rgba(160,213,255,.35) .65px,transparent .65px);background-size:18px 18px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    ::selection{background:rgba(70,221,231,.3);color:#fff}
    :focus-visible{outline:2px solid var(--cyan)!important;outline-offset:3px;border-radius:8px}
    .container{max-width:1200px}
    .section{position:relative;padding:104px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.12em}
    .eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan);box-shadow:0 0 9px var(--cyan)}
    .section-title{max-width:700px;margin:14px 0 14px;font-weight:750;font-size:clamp(30px,3.4vw,42px);line-height:1.24;letter-spacing:-.04em}
    .section-intro{max-width:660px;color:var(--muted);margin:0}
    .glass{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.04);backdrop-filter:blur(16px)}
    .site-header{position:absolute;z-index:20;top:18px;left:0;width:100%}
    .nav-shell{min-height:70px;padding:8px 12px 8px 18px;border:1px solid rgba(192,225,255,.18);border-radius:18px;background:rgba(9,15,35,.57);backdrop-filter:blur(16px);box-shadow:0 10px 34px rgba(0,0,0,.16);transition:.25s ease}
    .site-header.scrolled{position:fixed;top:0;padding-top:8px}
    .site-header.scrolled .nav-shell{background:rgba(8,13,30,.94);border-radius:14px;box-shadow:0 12px 34px rgba(0,0,0,.38)}
    .navbar-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.04em;color:#fff}
    .brand-mark{display:grid;place-items:center;width:33px;height:33px;border-radius:10px;color:#07121c;background:linear-gradient(135deg,var(--cyan),#9ef8ff);box-shadow:0 0 20px rgba(70,221,231,.35)}
    .navbar-nav{gap:5px}
    .nav-link{color:var(--muted)!important;padding:9px 12px!important;border-radius:10px;font-size:14px;transition:.2s}
    .nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(96,189,235,.11)}
    .nav-link.active{box-shadow:inset 0 -1px 0 var(--cyan)}
    .nav-search{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.035);color:var(--text);transition:.2s}
    .nav-search:hover{transform:translateY(-2px);border-color:var(--line-strong);color:var(--cyan)}
    .btn{border-radius:12px;border-width:1px;font-weight:700;padding:11px 18px;line-height:1.45;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}
    .btn-primary{border-color:transparent;background:linear-gradient(135deg,#54e6ef,#29b9c9);color:#06131e;box-shadow:0 8px 23px rgba(70,221,231,.22)}
    .btn-primary:hover,.btn-primary:active{background:linear-gradient(135deg,#8bf5fb,#3acbda)!important;color:#051019!important;transform:translateY(-2px);box-shadow:0 14px 30px rgba(70,221,231,.36)}
    .btn-outline{border-color:var(--line);background:rgba(255,255,255,.025);color:var(--text)}
    .btn-outline:hover{border-color:var(--line-strong);background:rgba(40,65,120,.35);color:#fff;transform:translateY(-2px)}
    .navbar-toggler{border:1px solid var(--line);color:var(--text);padding:8px 10px}
    .navbar-toggler-icon{filter:invert(1)}
    .hero{position:relative;min-height:745px;padding:145px 0 54px;display:flex;align-items:center;overflow:hidden}
    .hero:before{content:"";position:absolute;right:-9%;top:13%;width:570px;height:570px;border-radius:50%;background:radial-gradient(circle,rgba(70,221,231,.16),rgba(110,121,234,.1) 35%,transparent 69%);filter:blur(2px)}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr minmax(440px,1.15fr) 1fr;gap:24px;align-items:center}
    .hero-side{display:flex;flex-direction:column;gap:16px}
    .hero-side.right{align-items:flex-end}
    .value-note{width:100%;padding:18px;border-radius:16px}
    .value-note strong{display:block;font-size:14px;margin-bottom:4px}
    .value-note p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .value-number{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:22px;color:var(--cyan);line-height:1.2;margin-bottom:7px}
    .hero-center{text-align:center}
    .hero-brand{color:var(--cyan);font-size:14px;font-weight:800;letter-spacing:.16em}
    h1{margin:15px auto 20px;max-width:720px;font-size:clamp(40px,5.25vw,64px);line-height:1.12;letter-spacing:-.07em;font-weight:850}
    h1 span{display:block;color:#bdeef2}
    .hero-copy{max-width:650px;margin:0 auto;color:var(--muted);font-size:16px}
    .hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin:27px 0 18px}
    .adult-note{display:flex;justify-content:center;gap:8px;align-items:flex-start;color:var(--muted2);font-size:12px;line-height:1.65}
    .adult-note i{color:var(--coral);font-style:normal}
    .stage{position:relative;margin:38px auto 0;max-width:535px;height:218px;border-radius:22px}
    .stage:before{content:"";position:absolute;inset:20px 10%;border-radius:50%;background:rgba(70,221,231,.16);filter:blur(28px)}
    .cover{position:absolute;overflow:hidden;border:1px solid rgba(192,232,255,.22);border-radius:14px;background:linear-gradient(145deg,#243866,#101a38 68%);box-shadow:0 16px 34px rgba(0,0,0,.38);transition:.28s}
    .cover:hover{transform:translateY(-7px) scale(1.025)!important;border-color:var(--cyan)}
    .cover:before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(142,227,255,.22),transparent 38%),repeating-linear-gradient(90deg,transparent 0 17px,rgba(255,255,255,.035) 18px 20px)}
    .cover:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,8,20,.92),transparent 60%)}
    .cover small{position:absolute;z-index:1;left:12px;right:10px;bottom:10px;font-size:11px;color:#eafaff;text-align:left;line-height:1.4}
    .cover.one{width:138px;height:174px;left:2%;top:23px;transform:rotate(-11deg)}
    .cover.two{width:172px;height:207px;left:calc(50% - 86px);top:0;z-index:2;transform:translateY(-5px)}
    .cover.three{width:138px;height:174px;right:2%;top:24px;transform:rotate(11deg)}
    .cover.four{width:128px;height:96px;right:13%;bottom:-1px;z-index:3;transform:rotate(5deg);background:linear-gradient(145deg,#53335f,#14264e)}
    .hero-strip{position:relative;z-index:1;margin-top:35px;padding:13px 18px;border-radius:15px;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
    .hero-stat{padding:3px 16px;border-right:1px solid var(--line)}
    .hero-stat:last-child{border:0}.hero-stat b{display:block;color:#e9fbff;font-size:14px}.hero-stat span{display:block;color:var(--muted2);font-size:11px}
    .function-layout{display:grid;grid-template-columns:310px 1fr;gap:30px;margin-top:42px}
    .function-nav{padding:12px;border-radius:18px;height:max-content}
    .function-tab{width:100%;text-align:left;display:flex;align-items:center;gap:13px;padding:14px;border:0;border-radius:12px;background:transparent;color:var(--muted);transition:.2s}
    .function-tab:hover,.function-tab.active{background:rgba(72,156,220,.13);color:#fff}
    .function-tab b{display:grid;place-items:center;width:29px;height:29px;border:1px solid var(--line);border-radius:9px;color:var(--cyan);font-size:12px}
    .feature-panel{border-radius:22px;padding:34px;min-height:315px}
    .feature-panel h3{font-size:25px;margin:0 0 10px}.feature-panel p{color:var(--muted);max-width:580px;margin:0}
    .ui-preview{margin-top:25px;padding:18px;border-radius:15px;background:rgba(4,10,29,.45);border:1px solid rgba(178,221,255,.12)}
    .filter-row,.tag-row{display:flex;gap:8px;flex-wrap:wrap}.filter-chip,.badge-soft{border:1px solid var(--line);border-radius:999px;padding:5px 10px;color:#bfeff1;font-size:12px;background:rgba(70,221,231,.06)}
    .preview-line{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px solid rgba(182,220,255,.11);font-size:13px}.preview-line:last-child{border:0}.preview-line span{color:var(--muted)}.track{width:36%;height:5px;border-radius:8px;background:linear-gradient(90deg,var(--cyan) 62%,rgba(255,255,255,.12) 62%)}
    .scenario-grid{display:grid;grid-template-columns:1.35fr .9fr .9fr;grid-template-rows:185px 185px;gap:18px;margin-top:42px}
    .scenario-card{position:relative;overflow:hidden;padding:25px;border-radius:20px;background:linear-gradient(135deg,rgba(34,54,103,.82),rgba(12,19,43,.87));border:1px solid var(--line);box-shadow:var(--shadow);transition:.25s}
    .scenario-card:before{content:"";position:absolute;width:220px;height:220px;border:1px solid rgba(70,221,231,.18);border-radius:50%;right:-60px;top:-80px}
    .scenario-card:hover{transform:translateY(-5px);border-color:var(--line-strong)}
    .scenario-card.large{grid-row:span 2;background:linear-gradient(135deg,rgba(29,55,101,.95),rgba(11,16,39,.93))}
    .scenario-card h3{position:relative;font-size:21px;margin:48px 0 8px}.scenario-card.large h3{font-size:27px;margin-top:130px}.scenario-card p{position:relative;color:var(--muted);font-size:13px;line-height:1.7;margin:0 0 14px}.text-link{position:relative;color:var(--cyan);font-size:13px;font-weight:700}.text-link:after{content:"";position:absolute;bottom:-3px;left:0;width:24px;height:1px;background:currentColor;transition:.2s}.text-link:hover:after{width:100%}
    .case-rail{display:grid;grid-template-columns:1.35fr .82fr .82fr;gap:18px;margin-top:42px}
    .case-card{padding:24px;border-radius:20px;min-height:260px;transition:.25s}
    .case-card:hover{transform:translateY(-5px);border-color:var(--line-strong)}
    .case-card.primary{background:linear-gradient(135deg,rgba(31,55,102,.78),rgba(18,24,54,.8))}
    .case-no{font-family:ui-monospace,monospace;color:var(--coral);font-size:13px;letter-spacing:.12em}.case-card h3{font-size:22px;margin:50px 0 8px}.case-card p{font-size:13px;color:var(--muted);margin:0 0 13px}.case-card .tag-row{margin-top:17px}
    .price-grid{display:grid;grid-template-columns:1fr 1.08fr 1fr;gap:20px;align-items:center;margin-top:42px}
    .price-card{padding:28px;border-radius:20px;min-height:325px}.price-card.highlight{border-color:rgba(70,221,231,.48);background:linear-gradient(155deg,rgba(28,70,100,.72),rgba(16,25,57,.76));box-shadow:0 20px 48px rgba(20,154,174,.12)}
    .price-card h3{font-size:22px;margin:12px 0 7px}.price-card p{color:var(--muted);font-size:13px;min-height:42px}.price-card ul{list-style:none;padding:0;margin:22px 0}.price-card li{font-size:13px;color:#d7e4f5;padding:7px 0;border-bottom:1px solid rgba(182,220,255,.1)}.price-card li:before{content:"✓";color:var(--cyan);margin-right:9px}
    .notice-bar{margin-top:30px;padding:22px 26px;border-radius:18px;display:flex;align-items:center;justify-content:space-between;gap:22px}.notice-bar p{margin:0;color:var(--muted);font-size:14px}.notice-bar strong{color:#fff}
    .faq-wrap{max-width:880px;margin:42px auto 0}.accordion-item{border:1px solid var(--line)!important;background:rgba(19,29,60,.54)!important;color:var(--text)!important;margin-bottom:10px;border-radius:14px!important;overflow:hidden}.accordion-button{background:transparent!important;color:var(--text)!important;box-shadow:none!important;font-weight:700;padding:18px 20px}.accordion-button:not(.collapsed){color:#d9fcff!important;background:rgba(70,221,231,.07)!important}.accordion-button:after{filter:invert(1) brightness(2);opacity:.8}.accordion-body{color:var(--muted);font-size:14px;padding:0 20px 19px}
    .footer{position:relative;margin-top:90px;padding:60px 0 22px;border-top:1px solid var(--line);background:rgba(4,8,20,.56)}.footer:before{content:"";position:absolute;inset:0;opacity:.12;background:repeating-linear-gradient(90deg,transparent 0 35px,rgba(178,220,255,.3) 36px 38px,transparent 39px 74px);pointer-events:none}.footer .container{position:relative}.footer-title{font-size:19px;font-weight:800;margin-bottom:12px}.footer p,.footer a{color:var(--muted);font-size:13px}.footer a:hover{color:var(--cyan)}.footer-links{display:flex;gap:18px;flex-wrap:wrap}.footer-bottom{border-top:1px solid rgba(182,220,255,.12);margin-top:34px;padding-top:18px;color:var(--muted2);font-size:12px}
    .modal-content,.offcanvas{background:#101a36;color:var(--text);border:1px solid var(--line);box-shadow:var(--shadow)}.modal-header,.modal-footer{border-color:var(--line)}.btn-close{filter:invert(1)}.search-input{background:rgba(4,10,27,.65);border:1px solid var(--line);color:#fff;border-radius:12px;padding:13px}.search-input:focus{background:rgba(4,10,27,.9);color:#fff;border-color:var(--cyan);box-shadow:0 0 0 .2rem rgba(70,221,231,.14)}
    @media(max-width:991px){.hero-grid{grid-template-columns:1fr 1fr}.hero-center{grid-column:1/-1;grid-row:1}.hero-side{display:grid;grid-template-columns:1fr 1fr}.hero-side.right{align-items:stretch}.hero-strip{grid-template-columns:repeat(2,1fr)}.hero-stat:nth-child(2){border-right:0}.hero-stat:nth-child(-n+2){border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:7px}.function-layout{grid-template-columns:1fr}.function-nav{display:flex;overflow:auto;gap:5px}.function-tab{white-space:nowrap;width:auto;flex:0 0 auto}.scenario-grid{grid-template-columns:1.2fr 1fr}.scenario-card.large{grid-row:span 2}.scenario-card:last-child{display:none}.case-rail,.price-grid{grid-template-columns:1fr 1fr}.case-card.primary,.price-card.highlight{grid-column:span 2}.nav-shell{padding-left:12px}}
    @media(max-width:767px){.site-header{top:10px}.nav-shell{border-radius:14px}.hero{padding-top:125px;min-height:760px}.hero-grid{display:block}.hero-side{display:none}.hero-copy{font-size:15px}.stage{transform:scale(.88);transform-origin:top center;margin-bottom:-22px}.section{padding:66px 0}.section-title{font-size:29px}.function-layout{margin-top:28px}.feature-panel{padding:22px}.scenario-grid,.case-rail,.price-grid{grid-template-columns:1fr}.scenario-card,.scenario-card.large{grid-row:auto;min-height:200px}.scenario-card.large h3{margin-top:62px}.case-card.primary,.price-card.highlight{grid-column:auto}.notice-bar{display:block;padding:21px}.notice-bar .btn{margin-top:15px;width:100%}.footer{margin-top:55px}.offcanvas .nav-link{padding:12px!important;font-size:16px}.hero-strip{margin-top:16px}.hero-stat{padding:6px 9px}.hero-stat b{font-size:12px}}
    @media(max-width:430px){h1{font-size:37px}.hero-actions .btn{width:100%}.stage{transform:scale(.72);margin:-12px -58px -54px}.hero-strip{padding:12px 8px}.hero-stat{padding:4px 7px}.hero-stat span{font-size:10px}.hero-stat b{font-size:11px}}

/* roulang page: category1 */
:root{
 --bg:#080b18;--bg2:#0d1630;--panel:rgba(19,29,60,.62);--panel-solid:#111c3a;
 --line:rgba(182,220,255,.16);--line-strong:rgba(98,230,238,.48);
 --text:#f3f7ff;--muted:#aebbd5;--muted2:#7786a6;--cyan:#46dde7;
 --cyan-deep:#1db6c6;--coral:#ff7a6b;--violet:#6e79ea;--pink:#e957b7;
 --radius:20px;--radius-sm:13px;--shadow:0 22px 54px rgba(0,0,0,.34);
 --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.8;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;z-index:-3;background:radial-gradient(circle at 80% 8%,rgba(70,221,231,.12),transparent 25rem),radial-gradient(circle at 8% 45%,rgba(110,121,234,.16),transparent 30rem),linear-gradient(140deg,#080b18,#0b1024 48%,#0d1630)}
body:after{content:"";position:fixed;inset:0;z-index:-2;opacity:.18;pointer-events:none;background-image:radial-gradient(rgba(160,213,255,.35) .65px,transparent .65px);background-size:18px 18px}
::selection{background:rgba(70,221,231,.32);color:#fff}
a{color:inherit;text-decoration:none}
a:hover{color:var(--cyan)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
.container{max-width:1200px}
.section{position:relative;padding:96px 0}
.glass{background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(16px);box-shadow:var(--shadow)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.12em}
.eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan);box-shadow:0 0 9px var(--cyan)}
.section-title{max-width:720px;margin:14px 0;font-size:clamp(30px,3.4vw,42px);font-weight:750;line-height:1.24;letter-spacing:-.04em}
.section-intro{max-width:680px;color:var(--muted);margin:0}
.site-header{position:absolute;z-index:20;top:18px;left:0;width:100%}
.nav-shell{min-height:70px;padding:8px 12px 8px 18px;border:1px solid rgba(192,225,255,.18);border-radius:18px;background:rgba(9,15,35,.57);backdrop-filter:blur(16px);box-shadow:0 10px 34px rgba(0,0,0,.16);transition:.25s ease}
.site-header.scrolled{position:fixed;top:0;padding-top:8px}
.site-header.scrolled .nav-shell{background:rgba(8,13,30,.94);border-radius:14px;box-shadow:0 12px 34px rgba(0,0,0,.38)}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.04em;color:#fff}
.brand-mark{display:grid;place-items:center;width:33px;height:33px;border-radius:10px;color:#07121c;background:linear-gradient(135deg,var(--cyan),#9ef8ff);box-shadow:0 0 20px rgba(70,221,231,.35)}
.navbar-nav{gap:5px}
.nav-link{color:var(--muted)!important;padding:9px 12px!important;border-radius:10px;font-size:14px;transition:.2s}
.nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(96,189,235,.11)}
.nav-link.active{box-shadow:inset 0 -1px 0 var(--cyan)}
.nav-search{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.035);color:var(--text);transition:.2s}
.nav-search:hover{transform:translateY(-2px);border-color:var(--line-strong);color:var(--cyan)}
.btn{border-radius:12px;border-width:1px;font-weight:700;padding:11px 18px;line-height:1.45;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}
.btn-primary{border-color:transparent;background:linear-gradient(135deg,#54e6ef,#29b9c9);color:#06131e;box-shadow:0 8px 23px rgba(70,221,231,.22)}
.btn-primary:hover,.btn-primary:active{background:linear-gradient(135deg,#8bf5fb,#3acbda)!important;color:#051019!important;transform:translateY(-2px);box-shadow:0 14px 30px rgba(70,221,231,.36)}
.btn-outline{border-color:var(--line);background:rgba(255,255,255,.025);color:var(--text)}
.btn-outline:hover{border-color:var(--line-strong);background:rgba(40,65,120,.35);color:#fff;transform:translateY(-2px)}
.btn:focus-visible,.nav-link:focus-visible,.nav-search:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.navbar-toggler{border:1px solid var(--line);color:var(--text);padding:8px 10px}
.navbar-toggler-icon{filter:invert(1)}
.inner-hero{min-height:500px;padding:160px 0 70px;position:relative;overflow:hidden}
.inner-hero:before{content:"";position:absolute;width:620px;height:420px;right:-100px;top:100px;background:radial-gradient(ellipse,rgba(70,221,231,.18),transparent 68%);filter:blur(8px)}
.inner-hero:after{content:"";position:absolute;inset:0;opacity:.2;background:linear-gradient(90deg,transparent 0 70%,rgba(70,221,231,.05) 70% 70.2%,transparent 70.2% 100%),linear-gradient(0deg,transparent 0 78%,rgba(182,220,255,.08) 78% 78.2%,transparent 78.2%)}
.hero-content{position:relative;z-index:2}
.breadcrumb{--bs-breadcrumb-divider-color:var(--muted2);margin-bottom:20px}
.breadcrumb-item,.breadcrumb-item a{color:var(--muted2);font-size:13px}
.breadcrumb-item.active{color:var(--cyan)}
.hero-title{font-size:clamp(36px,5vw,60px);line-height:1.18;letter-spacing:-.055em;font-weight:800;max-width:720px;margin:0 0 18px}
.hero-title em{font-style:normal;color:var(--cyan)}
.hero-summary{max-width:650px;color:var(--muted);font-size:17px;margin-bottom:25px}
.tag-row,.filter-row{display:flex;gap:9px;flex-wrap:wrap}
.badge-soft,.filter-chip{border:1px solid var(--line);border-radius:999px;padding:6px 12px;color:#bfeff1;font-size:12px;background:rgba(70,221,231,.06)}
.filter-bar{margin-top:-30px;position:relative;z-index:5;border-radius:18px;padding:18px 22px}
.filter-label{color:var(--muted2);font-size:13px;margin-right:8px}
.filter-chip{cursor:pointer;transition:.2s}
.filter-chip:hover,.filter-chip.active{color:#06131e;background:var(--cyan);border-color:var(--cyan);transform:translateY(-2px)}
.directory-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:30px}
.directory-grid{display:grid;grid-template-columns:7fr 5fr;gap:20px}
.content-card{position:relative;overflow:hidden;border-radius:20px;padding:22px;background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);transition:.25s}
.content-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 25px 60px rgba(0,0,0,.43)}
.cover{position:relative;overflow:hidden;border-radius:14px;min-height:180px;background:linear-gradient(135deg,#202b67 0%,#111d43 48%,#172c4e 100%);border:1px solid rgba(182,220,255,.15)}
.cover:before{content:"";position:absolute;inset:15% -10%;background:repeating-linear-gradient(115deg,transparent 0 28px,rgba(70,221,231,.16) 29px 30px,transparent 31px 62px);transform:rotate(-12deg)}
.cover:after{content:"字幕轨道  ·  00:24:18";position:absolute;left:16px;bottom:14px;color:rgba(235,251,255,.78);font:11px monospace;letter-spacing:.08em}
.cover-tall{min-height:250px;background:linear-gradient(150deg,#332452,#172457 52%,#122f49)}
.cover-wide{min-height:210px;background:linear-gradient(135deg,#162c58,#30245b 50%,#122b42)}
.cover-label{position:absolute;top:14px;left:14px;z-index:1;padding:5px 9px;border-radius:8px;background:rgba(8,11,24,.68);color:#d9fbff;font-size:11px}
.content-card h3{font-size:21px;margin:18px 0 8px}
.content-card p{color:var(--muted);font-size:14px;margin:0 0 16px}
.meta-line{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted2);font-size:12px;margin-bottom:15px}
.meta-line span{padding-right:9px;border-right:1px solid var(--line)}
.meta-line span:last-child{border:0}
.card-number{color:var(--cyan);font:12px monospace;letter-spacing:.1em}
.side-stack{display:grid;gap:20px}
.side-card{display:grid;grid-template-columns:145px 1fr;gap:18px;align-items:center}
.side-card .cover{min-height:145px}
.side-card h3{font-size:18px;margin:0 0 6px}
.side-card p{font-size:13px;margin-bottom:9px}
.guide{display:grid;grid-template-columns:1fr 1.3fr;gap:28px;align-items:stretch}
.guide-panel{border-radius:22px;padding:30px}
.guide-list{list-style:none;padding:0;margin:18px 0 0}
.guide-list li{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.guide-list li:last-child{border-bottom:0}
.guide-list b{color:var(--cyan);font:14px monospace}
.note-box{border-radius:16px;padding:22px;background:rgba(255,122,107,.07);border:1px solid rgba(255,122,107,.23);color:var(--muted)}
.note-box strong{color:#ffd0ca}
.related-track{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
.related{padding:24px;border-radius:19px;display:flex;justify-content:space-between;gap:15px;align-items:center;transition:.2s}
.related:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.related h3{font-size:20px;margin:0 0 5px}
.related p{margin:0;color:var(--muted);font-size:14px}
.faq-wrap{max-width:850px}
.accordion-item{background:var(--panel);border:1px solid var(--line)!important;margin-bottom:12px;border-radius:15px!important;overflow:hidden}
.accordion-button{background:transparent!important;color:var(--text)!important;box-shadow:none!important;font-weight:700;padding:19px 22px}
.accordion-button:after{filter:invert(1);opacity:.7}
.accordion-body{color:var(--muted);padding:0 22px 21px;font-size:14px}
.cta-band{padding:28px 32px;border-radius:20px;display:flex;justify-content:space-between;align-items:center;gap:22px;background:linear-gradient(105deg,rgba(28,50,99,.84),rgba(19,29,60,.66));border:1px solid var(--line-strong)}
.cta-band h2{font-size:26px;margin:0 0 5px}
.cta-band p{color:var(--muted);margin:0;font-size:14px}
.footer{padding:58px 0 24px;border-top:1px solid var(--line);background:rgba(5,8,19,.5)}
.footer-title{font-weight:800;font-size:17px;margin-bottom:12px}
.footer p,.footer a{color:var(--muted);font-size:14px}
.footer a{transition:.2s}
.footer a:hover{color:var(--cyan);padding-left:3px}
.footer-bottom{border-top:1px solid var(--line);margin-top:38px;padding-top:19px;color:var(--muted2);font-size:12px}
.modal-content,.offcanvas{background:#0d1630;color:var(--text);border:1px solid var(--line)}
.modal-header,.modal-footer{border-color:var(--line)}
.form-control,.form-select{color:var(--text);background:rgba(8,11,24,.7);border:1px solid var(--line);border-radius:11px;padding:12px 14px}
.form-control::placeholder{color:var(--muted2)}
.form-control:focus,.form-select:focus{color:var(--text);background:rgba(8,11,24,.9);border-color:var(--cyan);box-shadow:0 0 0 3px rgba(70,221,231,.12)}
.offcanvas .nav-link{font-size:16px;padding:13px!important}
@media(max-width:991px){
 .navbar-collapse{display:none!important}.inner-hero{padding-top:145px}.directory-grid,.guide{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
 .site-header{top:10px}.nav-shell{min-height:62px;padding-left:12px}.navbar-brand{font-size:14px}.navbar-brand span:last-child{max-width:170px;white-space:normal;line-height:1.2}
 .inner-hero{min-height:550px;padding:135px 0 62px}.hero-title{font-size:38px}.hero-summary{font-size:15px}.section{padding:70px 0}
 .filter-bar{margin-top:-25px;padding:16px}.directory-head{display:block}.directory-head .section-intro{margin-top:10px}
 .side-stack,.related-track{grid-template-columns:1fr}.side-card{grid-template-columns:125px 1fr}.side-card .cover{min-height:135px}
 .guide-panel{padding:23px}.cta-band{display:block;padding:25px}.cta-band .btn{margin-top:18px}
}
@media(max-width:520px){
 .container{padding-left:18px;padding-right:18px}.hero-title{font-size:34px}.cover-tall{min-height:220px}.content-card{padding:16px}.side-card{grid-template-columns:1fr}.side-card .cover{min-height:180px}.nav-search{display:none}
}

/* roulang page: category2 */
:root{
--bg:#080b18;--bg2:#0d1630;--panel:rgba(19,29,60,.62);--panel-solid:#111c3a;
--line:rgba(182,220,255,.16);--line-strong:rgba(98,230,238,.48);
--text:#f3f7ff;--muted:#aebbd5;--muted2:#7786a6;--cyan:#46dde7;
--cyan-deep:#1db6c6;--coral:#ff7a6b;--violet:#6e79ea;--pink:#e957b7;
--radius:20px;--radius-sm:13px;--shadow:0 22px 54px rgba(0,0,0,.34);
--font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.8;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;z-index:-3;background:radial-gradient(circle at 80% 7%,rgba(110,121,234,.19),transparent 25rem),radial-gradient(circle at 8% 43%,rgba(70,221,231,.11),transparent 28rem),linear-gradient(140deg,#080b18 0%,#0b1024 48%,#0d1630 100%)}
body:after{content:"";position:fixed;inset:0;z-index:-2;opacity:.16;pointer-events:none;background-image:radial-gradient(rgba(160,213,255,.35) .65px,transparent .65px);background-size:18px 18px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.container{max-width:1200px}
.section{position:relative;padding:94px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:24px;height:1px;background:var(--cyan);box-shadow:0 0 9px var(--cyan)}
.section-title{max-width:760px;margin:13px 0;font-size:clamp(30px,3.5vw,42px);font-weight:800;letter-spacing:-.045em;line-height:1.25}
.section-intro{max-width:690px;margin:0;color:var(--muted)}
.site-header{position:absolute;z-index:20;top:18px;left:0;width:100%;transition:.25s ease}
.nav-shell{min-height:70px;padding:8px 12px 8px 18px;border:1px solid rgba(192,225,255,.18);border-radius:18px;background:rgba(9,15,35,.57);backdrop-filter:blur(16px);box-shadow:0 10px 34px rgba(0,0,0,.16);transition:.25s ease}
.site-header.scrolled{position:fixed;top:0;padding-top:8px}
.site-header.scrolled .nav-shell{background:rgba(8,13,30,.95);border-radius:14px;box-shadow:0 12px 34px rgba(0,0,0,.38)}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.04em;color:#fff}
.brand-mark{display:grid;place-items:center;width:33px;height:33px;border-radius:10px;color:#07121c;background:linear-gradient(135deg,var(--cyan),#9ef8ff);box-shadow:0 0 20px rgba(70,221,231,.35)}
.navbar-nav{gap:5px}
.nav-link{color:var(--muted)!important;padding:9px 12px!important;border-radius:10px;font-size:14px;transition:.2s}
.nav-link:hover,.nav-link.active{color:#fff!important;background:rgba(96,189,235,.11)}
.nav-link.active{box-shadow:inset 0 -1px 0 var(--cyan)}
.nav-search{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.035);color:var(--text);transition:.2s}
.nav-search:hover{transform:translateY(-2px);border-color:var(--line-strong);color:var(--cyan)}
.btn{border-radius:12px;border-width:1px;font-weight:750;padding:11px 18px;line-height:1.45;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}
.btn-primary{border-color:transparent;background:linear-gradient(135deg,#54e6ef,#29b9c9);color:#06131e;box-shadow:0 8px 23px rgba(70,221,231,.22)}
.btn-primary:hover,.btn-primary:active{background:linear-gradient(135deg,#8bf5fb,#3acbda)!important;color:#051019!important;transform:translateY(-2px);box-shadow:0 14px 30px rgba(70,221,231,.36)}
.btn-outline{border-color:var(--line);background:rgba(255,255,255,.025);color:var(--text)}
.btn-outline:hover{border-color:var(--line-strong);background:rgba(40,65,120,.35);color:#fff;transform:translateY(-2px)}
.navbar-toggler{border:1px solid var(--line);color:var(--text);padding:8px 10px}
.navbar-toggler-icon{filter:invert(1)}
.glass{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:blur(15px)}
.badge-soft,.topic-tag{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;padding:5px 10px;color:#c4f7fa;font-size:12px;font-weight:650;background:rgba(70,221,231,.06)}
.topic-tag.coral{color:#ffd0ca;border-color:rgba(255,122,107,.28);background:rgba(255,122,107,.09)}
.topic-hero{position:relative;min-height:500px;padding:142px 0 70px;overflow:hidden;display:flex;align-items:center}
.topic-hero:before{content:"";position:absolute;width:620px;height:620px;right:-130px;top:-170px;border-radius:50%;background:radial-gradient(circle,rgba(110,121,234,.32),rgba(233,87,183,.08) 38%,transparent 69%);filter:blur(5px)}
.topic-hero:after{content:"";position:absolute;right:9%;bottom:30px;width:440px;height:1px;background:linear-gradient(90deg,transparent,var(--coral),transparent);box-shadow:0 0 18px var(--coral)}
.breadcrumb{margin-bottom:16px;font-size:13px}
.breadcrumb-item,.breadcrumb-item a{color:var(--muted2)}
.breadcrumb-item.active{color:#dce8ff}
.breadcrumb-item+.breadcrumb-item:before{color:var(--muted2)}
.topic-no{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:.18em}
.topic-hero h1{max-width:660px;margin:10px 0 16px;font-size:clamp(38px,5vw,58px);font-weight:850;line-height:1.17;letter-spacing:-.06em}
.topic-copy{max-width:620px;color:var(--muted);margin-bottom:24px}
.cover-board{position:relative;margin-left:auto;width:min(100%,420px);height:310px;border-radius:24px;border:1px solid rgba(205,224,255,.25);overflow:hidden;background:linear-gradient(145deg,#252d67,#101936 57%,#17143a);box-shadow:0 28px 70px rgba(0,0,0,.42)}
.cover-board:before{content:"";position:absolute;inset:18px;background:repeating-linear-gradient(90deg,rgba(255,255,255,.11) 0 2px,transparent 2px 34px),linear-gradient(130deg,rgba(70,221,231,.14),transparent 48%);border:1px solid rgba(205,224,255,.12);border-radius:17px}
.cover-board:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(4,8,21,.87));pointer-events:none}
.cover-caption{position:absolute;z-index:1;left:27px;right:27px;bottom:24px}
.cover-caption b{display:block;font-size:21px;letter-spacing:-.04em}
.cover-caption span{color:#c3cee4;font-size:13px}
.guide-bar{position:relative;z-index:2;margin-top:-27px;padding:13px 18px;border-radius:15px;display:flex;align-items:center;gap:16px;overflow:auto;white-space:nowrap}
.guide-bar a{padding:5px 9px;color:var(--muted);font-size:14px;transition:.2s}
.guide-bar a:hover{color:var(--cyan);transform:translateY(-1px)}
.guide-bar strong{color:#fff;font-size:13px}
.timeline{position:relative;margin-top:44px;padding-left:45px}
.timeline:before{content:"";position:absolute;left:12px;top:14px;bottom:20px;width:1px;background:linear-gradient(var(--cyan),rgba(110,121,234,.45),transparent)}
.timeline-block{position:relative;padding-bottom:42px}
.timeline-dot{position:absolute;left:-40px;top:12px;width:15px;height:15px;border:3px solid var(--bg);border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(70,221,231,.15),0 0 18px rgba(70,221,231,.45)}
.timeline-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.08em}
.timeline-card{padding:18px;border-radius:22px;transition:.25s}
.timeline-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.poster{position:relative;min-height:220px;height:100%;overflow:hidden;border-radius:15px;background:linear-gradient(140deg,#213663,#101a38 55%,#44234d)}
.poster:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.08) 0 2px,transparent 2px 28px),radial-gradient(circle at 72% 24%,rgba(70,221,231,.4),transparent 20%),linear-gradient(0deg,rgba(5,10,23,.84),transparent 68%)}
.poster:after{content:"";position:absolute;left:17px;right:17px;bottom:17px;height:3px;background:linear-gradient(90deg,var(--cyan) 0 42%,rgba(255,255,255,.2) 42%);box-shadow:0 0 12px rgba(70,221,231,.5)}
.poster-label{position:absolute;z-index:1;bottom:30px;left:17px;font-size:13px;color:#e7f9ff}
.timeline-card h2{margin:3px 0 9px;font-size:25px;font-weight:800;letter-spacing:-.04em}
.timeline-card p{color:var(--muted);margin-bottom:16px}
.info-mini{height:100%;padding:18px;border-radius:16px;background:rgba(6,13,32,.42);border:1px solid var(--line)}
.info-mini h3{margin:0 0 8px;font-size:16px;font-weight:800}
.info-mini p{font-size:14px;line-height:1.7;margin:0;color:var(--muted)}
.info-mini .mini-number{display:block;margin-bottom:5px;color:var(--coral);font-size:12px;font-weight:800;letter-spacing:.13em}
.notice-banner{margin:16px 0 55px;padding:22px 25px;border-radius:20px;background:linear-gradient(100deg,rgba(32,52,106,.65),rgba(16,24,53,.74));border:1px solid var(--line);display:flex;align-items:center;gap:18px}
.notice-icon{flex:0 0 43px;width:43px;height:43px;display:grid;place-items:center;border-radius:13px;background:rgba(70,221,231,.14);color:var(--cyan);font-size:20px}
.notice-banner p{margin:0;color:var(--muted);font-size:14px}
.continue-card{height:100%;padding:28px;border-radius:21px;background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);transition:.25s}
.continue-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.continue-card h3{font-size:22px;font-weight:800;margin:10px 0}
.continue-card p{color:var(--muted);font-size:14px}
.accordion-item{margin-bottom:11px;overflow:hidden;border:1px solid var(--line)!important;border-radius:14px!important;background:rgba(19,29,60,.58)!important}
.accordion-button{padding:17px 19px;background:transparent!important;color:var(--text)!important;font-weight:750;box-shadow:none!important}
.accordion-button:after{filter:brightness(0) invert(1);opacity:.75}
.accordion-button:not(.collapsed){color:var(--cyan)!important}
.accordion-body{padding:0 19px 18px;color:var(--muted);font-size:14px}
.feedback-box{padding:29px;border-radius:22px}
.form-label{margin-bottom:7px;color:#dbe7fa;font-size:14px;font-weight:700}
.form-control,.form-select{min-height:48px;padding:11px 13px;background:rgba(4,10,27,.58);color:var(--text);border:1px solid var(--line);border-radius:12px}
.form-control::placeholder{color:var(--muted2)}
.form-control:focus,.form-select:focus{background:rgba(9,18,42,.94);color:#fff;border-color:var(--cyan);box-shadow:0 0 0 .22rem rgba(70,221,231,.12)}
.form-select option{background:#101a38;color:#fff}
.form-note{color:var(--muted2);font-size:12px}
.form-status{display:none;margin-top:13px;color:#bff6df;font-size:14px}
.form-status.show{display:block}
.footer{position:relative;padding:67px 0 22px;margin-top:84px;border-top:1px solid var(--line);background:rgba(6,10,24,.56)}
.footer:before{content:"";position:absolute;inset:0;opacity:.11;pointer-events:none;background:repeating-linear-gradient(90deg,transparent 0 24px,rgba(160,213,255,.35) 24px 27px,transparent 27px 44px)}
.footer .container{position:relative}
.footer-title{margin-bottom:10px;color:#fff;font-size:16px;font-weight:800}
.footer p,.footer a{color:var(--muted);font-size:14px}
.footer a{transition:.2s}
.footer a:hover{color:var(--cyan);padding-left:3px}
.footer-bottom{margin-top:35px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted2);font-size:12px}
.modal-content,.offcanvas{color:var(--text);background:#0d1734;border:1px solid var(--line);box-shadow:var(--shadow)}
.modal-header,.modal-footer{border-color:var(--line)}
.btn-close{filter:invert(1)}
.offcanvas .nav-link{display:block;padding:13px!important;margin-bottom:4px}
@media(max-width:991px){
.site-header{top:10px}.nav-shell{border-radius:15px}.topic-hero{padding-top:127px;min-height:auto}.cover-board{margin:35px 0 0;width:100%;height:270px}.section{padding:72px 0}.timeline{padding-left:32px}.timeline-dot{left:-27px}.timeline-card h2{font-size:23px}
}
@media(max-width:767px){
body{font-size:15px}.topic-hero h1{font-size:37px}.topic-hero{padding-bottom:62px}.guide-bar{margin-top:-18px;padding:10px}.section{padding:58px 0}.timeline{padding-left:26px;margin-top:32px}.timeline-dot{left:-21px;width:13px;height:13px}.timeline-card{padding:13px}.poster{min-height:185px;margin-bottom:15px}.notice-banner{align-items:flex-start;padding:18px;margin-bottom:38px}.footer{margin-top:56px;padding-top:52px}.navbar-brand{font-size:15px}.brand-mark{width:30px;height:30px}.feedback-box{padding:20px}
}
@media(max-width:520px){
.topic-hero h1{font-size:33px}.topic-copy{font-size:14px}.topic-hero .btn{width:100%;margin-top:9px}.cover-board{height:230px}.cover-caption b{font-size:18px}.section-title{font-size:28px}.notice-banner{gap:12px}.guide-bar strong{display:none}.footer-bottom{font-size:11px}
}