/* roulang page: index */
:root{
      --ink:#152132;
      --muted:#637083;
      --paper:#f6f8fb;
      --white:#ffffff;
      --line:#e4e9f0;
      --violet:#5f42d8;
      --violet-deep:#37218f;
      --cyan:#20b8c7;
      --orange:#f08c44;
      --shadow:0 18px 50px rgba(33,43,67,.10);
      --radius:24px;
      --small-radius:14px;
      --container:1180px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(32,184,199,.45);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .announce{background:#17192e;color:#dfe2fa;font-size:13px;letter-spacing:.02em}
    .announce-inner{min-height:38px;display:flex;align-items:center;justify-content:center;gap:12px}
    .announce b{color:#ffbb73}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,233,240,.9)}
    .nav{height:78px;display:flex;align-items:center;gap:32px}
    .brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:900;letter-spacing:.02em;color:var(--violet-deep);white-space:nowrap}
    .brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--violet),var(--cyan));color:#fff;font-size:18px;font-weight:900;box-shadow:0 8px 20px rgba(95,66,216,.25)}
    .nav-links{display:flex;align-items:center;gap:7px;margin-right:auto}
    .nav-links a{padding:10px 15px;border-radius:10px;color:#657083;font-size:14px;font-weight:700;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:#f0edff;color:var(--violet-deep)}
    .nav-tools{display:flex;align-items:center;gap:10px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8faff;border-radius:12px;padding:8px 12px;color:#8b96a6}
    .search input{width:116px;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}
    .icon-button{width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;color:#5e6878;display:grid;place-items:center;transition:.2s}
    .icon-button:hover{border-color:#b8aaf6;color:var(--violet);transform:translateY(-2px)}
    .primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:13px;padding:12px 19px;font-weight:800;font-size:14px;transition:.2s;border:1px solid transparent}
    .primary-btn{background:var(--violet);color:#fff;box-shadow:0 10px 22px rgba(95,66,216,.2)}
    .primary-btn:hover{background:var(--violet-deep);transform:translateY(-2px);box-shadow:0 14px 28px rgba(95,66,216,.28)}
    .secondary-btn{background:#fff;color:var(--violet-deep);border-color:#d9d1ff}
    .secondary-btn:hover{border-color:var(--violet);background:#f7f4ff;transform:translateY(-2px)}
    .menu-toggle{display:none}
    .hero{padding:68px 0 46px;background:linear-gradient(118deg,#f8f9ff 5%,#eefcff 100%);overflow:hidden}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--violet-deep);font-size:12px;font-weight:900;letter-spacing:.13em;text-transform:uppercase}
    .eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 5px rgba(240,140,68,.14)}
    h1,h2,h3,p{margin-top:0}
    h1{margin:18px 0 20px;font-size:clamp(38px,5vw,68px);line-height:1.1;letter-spacing:-.02em;max-width:680px}
    .hero-copy{max-width:650px;color:var(--muted);font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .hero-note{display:flex;gap:20px;align-items:center;margin-top:25px;color:#6d7787;font-size:13px}
    .hero-note span{display:flex;align-items:center;gap:7px}
    .dot{width:7px;height:7px;background:var(--cyan);border-radius:50%}
    .hero-visual{position:relative}
    .hero-image{aspect-ratio:1.13/1;border-radius:30px;overflow:hidden;box-shadow:var(--shadow);position:relative;background:#1b2143}
    .hero-image img{width:100%;height:100%;object-fit:cover;opacity:.78}
    .hero-image::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(28,24,81,.15),rgba(37,28,100,.7))}
    .visual-panel{position:absolute;z-index:2;left:25px;right:25px;bottom:25px;padding:19px;border:1px solid rgba(255,255,255,.23);border-radius:18px;background:rgba(22,26,66,.75);backdrop-filter:blur(16px);color:#fff}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;font-size:13px}
    .status{display:flex;align-items:center;gap:7px;color:#9cf0de}.status i{width:7px;height:7px;border-radius:50%;background:#5be2bb}
    .visual-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .metric{padding:12px;border-radius:12px;background:rgba(255,255,255,.1)}
    .metric strong{display:block;font-size:21px}.metric small{color:#b8c0df;font-size:11px}
    section{padding:86px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-kicker{color:var(--violet);font-size:12px;font-weight:900;letter-spacing:.12em}
    h2{font-size:clamp(28px,3.2vw,43px);line-height:1.2;margin:9px 0 0;letter-spacing:-.02em}
    .section-intro{max-width:570px;color:var(--muted);margin:0}
    .soft-section{background:#fff}
    .promo-strip{padding:19px 0;background:#fff2e8;border-top:1px solid #ffe0c8;border-bottom:1px solid #ffe0c8}
    .promo-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
    .promo-title{font-size:16px;font-weight:900;color:#8f4d21}.promo-copy{color:#8b6a53;font-size:13px}
    .badge{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;background:#eeeaff;color:var(--violet-deep);font-size:11px;font-weight:900}
    .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .matrix-card{min-height:188px;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.25s}
    .matrix-card:hover{transform:translateY(-6px);border-color:#b9adf4;box-shadow:var(--shadow)}
    .matrix-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;background:#e7fbfb;color:#0b8999;font-size:20px}
    .matrix-card:nth-child(2) .matrix-icon{background:#fff0e5;color:#d56b23}
    .matrix-card:nth-child(3) .matrix-icon{background:#efebff;color:var(--violet)}
    .matrix-card:nth-child(4) .matrix-icon{background:#eaf5ff;color:#317ab1}
    .matrix-card h3{font-size:17px;margin-bottom:7px}.matrix-card p{color:var(--muted);font-size:13px;margin:0}
    .outline{background:#17192e;color:#fff}.outline .section-intro{color:#b6bad0}.outline .section-kicker{color:#8fe6de}
    .outline-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
    .outline-list{border-top:1px solid rgba(255,255,255,.16)}
    .outline-item{display:grid;grid-template-columns:52px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.16)}
    .outline-no{color:#7fe1d6;font-weight:900;font-size:13px}.outline-item h3{margin:0 0 3px;font-size:16px}.outline-item p{margin:0;color:#aeb3ca;font-size:13px}.outline-arrow{color:#8690ad;font-size:20px}
    .demo{background:#f0edff}.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .demo-card{border-radius:var(--radius);background:#fff;padding:28px;border:1px solid #e0dbff}
    .demo-card.featured{background:linear-gradient(135deg,#5e42d5,#38228f);color:#fff;border:0}
    .demo-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.demo-card p{color:var(--muted);font-size:14px}.featured p{color:#d9d5f4}
    .bar{height:9px;background:#e7eaf1;border-radius:99px;overflow:hidden;margin:18px 0}.bar i{display:block;height:100%;width:76%;background:var(--cyan);border-radius:inherit}.featured .bar{background:rgba(255,255,255,.18)}.featured .bar i{background:#ffb56d}
    .demo-foot{display:flex;justify-content:space-between;color:#7b8495;font-size:12px}.featured .demo-foot{color:#d7d5ec}
    .proof{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .proof-card{padding:28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
    .quote{font-size:16px;line-height:1.8;margin-bottom:20px}.person{display:flex;align-items:center;gap:12px;color:#687487;font-size:13px}.avatar{width:37px;height:37px;border-radius:50%;display:grid;place-items:center;background:#e9e5ff;color:var(--violet-deep);font-weight:900}
    .data-band{background:#fff}.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.data-item{padding:28px;border-right:1px solid var(--line)}.data-item:last-child{border-right:0}.data-item strong{display:block;font-size:34px;color:var(--violet-deep);line-height:1.2}.data-item span{color:var(--muted);font-size:13px}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}.compare-card{padding:30px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}.compare-card.highlight{border-color:#aa9df1;background:#faf9ff}.compare-card h3{margin-bottom:18px}.compare-list{padding:0;margin:0;list-style:none}.compare-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px solid #eef0f4;color:#5e6978;font-size:14px}.compare-list li:last-child{border:0}.check{color:#13a58e;font-weight:900}.cross{color:#d9844a;font-weight:900}
    .news-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:18px}.news-card{min-height:210px;padding:24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between;transition:.2s}.news-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}.news-card:first-child{background:#20254d;color:#fff}.news-card:first-child p{color:#c2c7e0}.news-meta{color:#8d98a8;font-size:12px}.news-card:first-child .news-meta{color:#9fe2dd}.news-card h3{font-size:19px;line-height:1.45;margin:12px 0 6px}.news-card p{font-size:13px;color:var(--muted);margin:0}
    .security{background:#eefaf8}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.security-card{display:flex;gap:16px;padding:23px;background:#fff;border-radius:18px;border:1px solid #d9efeb}.security-icon{flex:none;width:42px;height:42px;border-radius:12px;background:#d9f7f1;color:#168d82;display:grid;place-items:center;font-size:19px}.security-card h3{font-size:16px;margin:0 0 5px}.security-card p{font-size:13px;color:var(--muted);margin:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.faq-item{padding:21px 23px;border:1px solid var(--line);border-radius:16px;background:#fff}.faq-item h3{font-size:15px;margin:0 0 8px}.faq-item p{font-size:13px;color:var(--muted);margin:0}
    .closing{padding:65px 0;background:linear-gradient(110deg,#3b258e,#5b41cc);color:#fff;text-align:center}.closing h2{margin-bottom:12px}.closing p{max-width:650px;margin:0 auto 25px;color:#d9d5f3}.closing .primary-btn{background:#ffb46f;color:#43206e;box-shadow:none}.closing .primary-btn:hover{background:#ffc78f}
    footer{background:#15172b;color:#b8bdd0;padding:48px 0 25px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:35px}.footer-brand{color:#fff;margin-bottom:15px}.footer-text{font-size:13px;max-width:300px}.footer-title{font-size:13px;color:#fff;font-weight:800;margin-bottom:13px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#858ca3}
    @media(max-width:1024px){.hero-grid{gap:30px}.matrix{grid-template-columns:repeat(2,1fr)}.nav{gap:16px}.search{display:none}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.nav{height:68px}.nav-links,.nav-tools .primary-btn{display:none}.menu-toggle{display:grid;margin-left:auto}.hero{padding:48px 0 34px}.hero-grid,.outline-grid,.demo-grid,.compare,.security-grid{grid-template-columns:1fr}.hero-image{max-width:620px;margin-inline:auto}.section-head{display:block}.section-intro{margin-top:13px}.data-grid{grid-template-columns:repeat(2,1fr)}.data-item:nth-child(2){border-right:0}.data-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.proof{grid-template-columns:1fr}.news-grid{grid-template-columns:1fr 1fr}.news-card:first-child{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.promo-inner{display:block}.promo-inner .primary-btn{margin-top:12px}}
    @media(max-width:520px){h1{font-size:39px}.hero-copy{font-size:15px}.hero-actions{display:grid}.hero-actions a{width:100%}.hero-note{display:block}.hero-note span{margin-top:8px}.matrix,.news-grid,.faq-grid{grid-template-columns:1fr}.outline-grid{gap:28px}.outline-item{grid-template-columns:35px 1fr auto}.data-grid{grid-template-columns:1fr 1fr}.data-item{padding:20px 14px}.data-item strong{font-size:27px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}}

/* roulang page: category1 */
:root{
      --ink:#152132;
      --muted:#637083;
      --paper:#f6f8fb;
      --white:#fff;
      --line:#e4e9f0;
      --violet:#5f42d8;
      --violet-deep:#37218f;
      --cyan:#20b8c7;
      --orange:#f08c44;
      --shadow:0 18px 50px rgba(33,43,67,.10);
      --radius:24px;
      --small-radius:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .notice-bar{height:34px;background:#18213d;color:#dce2fa;font-size:12px}
    .notice-inner{height:34px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .notice-inner strong{color:#fff}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,233,240,.9)}
    .nav{height:78px;display:flex;align-items:center;gap:32px}
    .brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:900;color:var(--violet-deep);white-space:nowrap}
    .brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--violet),var(--cyan));color:#fff;font-size:18px;font-weight:900;box-shadow:0 8px 20px rgba(95,66,216,.25)}
    .nav-links{display:flex;align-items:center;gap:7px;margin-right:auto}
    .nav-links a{padding:10px 15px;border-radius:10px;color:#657083;font-size:14px;font-weight:700;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:#f0edff;color:var(--violet-deep)}
    .nav-tools{display:flex;align-items:center;gap:10px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8faff;border-radius:12px;padding:8px 12px;color:#8b96a6}
    .search input{width:116px;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}
    .icon-button{width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;color:#5e6878;display:grid;place-items:center;transition:.2s}
    .icon-button:hover{border-color:#b8aaf6;color:var(--violet);transform:translateY(-2px)}
    .primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:13px;padding:12px 19px;font-weight:800;font-size:14px;transition:.2s;border:1px solid transparent}
    .primary-btn{background:var(--violet);color:#fff;box-shadow:0 10px 22px rgba(95,66,216,.2)}
    .primary-btn:hover{background:var(--violet-deep);transform:translateY(-2px);box-shadow:0 14px 28px rgba(95,66,216,.28)}
    .secondary-btn{background:#fff;color:var(--violet-deep);border-color:#d9d1ff}
    .secondary-btn:hover{border-color:var(--violet);background:#f7f4ff;transform:translateY(-2px)}
    .menu-toggle{display:none}
    .page-hero{padding:72px 0 68px;background:linear-gradient(118deg,#f8f9ff 5%,#eefcff 100%)}
    .hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:54px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--violet-deep);font-size:12px;font-weight:900;letter-spacing:.13em}
    .eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 5px rgba(240,140,68,.14)}
    h1{margin:16px 0 18px;font-size:clamp(36px,5vw,62px);line-height:1.14;letter-spacing:-.02em}
    h2{margin:0;font-size:clamp(26px,3vw,38px);line-height:1.25}
    h3{margin:0;line-height:1.35}
    .hero-copy{max-width:650px;color:var(--muted);font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .hero-note{display:flex;gap:20px;align-items:center;margin-top:25px;color:#6d7787;font-size:13px;flex-wrap:wrap}
    .hero-note span{display:flex;align-items:center;gap:7px}
    .hero-panel{padding:28px;border-radius:30px;background:#18213d;color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-panel:after{content:"";position:absolute;width:190px;height:190px;border-radius:50%;right:-65px;top:-60px;background:rgba(32,184,199,.22)}
    .panel-top{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
    .panel-label{font-size:12px;color:#aeb8dc;letter-spacing:.08em}
    .status-dot{display:inline-flex;align-items:center;gap:7px;color:#a8f0dc;font-size:12px}
    .status-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:#47d4a9}
    .panel-score{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .score-card{padding:18px;border:1px solid rgba(255,255,255,.13);border-radius:16px;background:rgba(255,255,255,.07)}
    .score-card strong{display:block;font-size:28px;line-height:1.2}
    .score-card span{color:#aeb8dc;font-size:12px}
    .panel-bar{position:relative;z-index:1;margin-top:24px;height:8px;border-radius:10px;background:rgba(255,255,255,.12);overflow:hidden}
    .panel-bar i{display:block;width:78%;height:100%;border-radius:10px;background:linear-gradient(90deg,var(--cyan),#a99bff)}
    section{padding:84px 0}
    .soft-section{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-kicker{color:var(--violet);font-size:12px;font-weight:900;letter-spacing:.12em}
    .section-intro{max-width:570px;color:var(--muted);margin:0}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature-card{padding:27px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.25s}
    .feature-card:hover{transform:translateY(-5px);border-color:#b9adf4;box-shadow:var(--shadow)}
    .feature-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:#eeeaff;color:var(--violet-deep);font-size:20px;margin-bottom:20px}
    .feature-card:nth-child(2) .feature-icon{background:#e6f8f8;color:#128b95}
    .feature-card:nth-child(3) .feature-icon{background:#fff0e5;color:#d56b23}
    .feature-card h3{font-size:18px;margin-bottom:9px}
    .feature-card p{margin:0;color:var(--muted);font-size:14px}
    .topic-layout{display:grid;grid-template-columns:.74fr 1.26fr;gap:52px;align-items:start}
    .topic-copy{max-width:400px}
    .topic-copy p{color:var(--muted);margin:18px 0 0}
    .topic-list{border-top:1px solid var(--line)}
    .topic-item{display:grid;grid-template-columns:52px 1fr 28px;gap:17px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
    .topic-number{font-size:13px;font-weight:900;color:var(--violet)}
    .topic-item h3{font-size:16px;margin-bottom:4px}
    .topic-item p{margin:0;color:var(--muted);font-size:13px}
    .topic-arrow{font-size:21px;color:#929caf}
    .dark-section{background:#18213d;color:#fff}
    .dark-section .section-intro{color:#b6bed6}
    .dark-section .section-kicker{color:#8fe6de}
    .data-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);overflow:hidden}
    .data-item{padding:28px;border-right:1px solid rgba(255,255,255,.15)}
    .data-item:last-child{border-right:0}
    .data-item strong{display:block;font-size:34px;line-height:1.2;color:#fff}
    .data-item span{font-size:13px;color:#b6bed6}
    .compare-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .compare-card{padding:30px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
    .compare-card.highlight{border-color:#aa9df1;background:#faf9ff}
    .compare-card h3{font-size:20px;margin-bottom:19px}
    .compare-list{list-style:none;margin:0;padding:0}
    .compare-list li{display:flex;gap:11px;padding:11px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
    .compare-list li:last-child{border-bottom:0}
    .check{color:#18a78d;font-weight:900}
    .article-layout{display:grid;grid-template-columns:1.18fr .82fr;gap:22px}
    .article-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
    .article-card.featured{min-height:280px;display:flex;flex-direction:column;justify-content:end;color:#fff;background:linear-gradient(145deg,rgba(55,33,143,.93),rgba(24,33,61,.95)),url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=1200&q=80") center/cover}
    .article-card h3{font-size:23px;margin:12px 0 8px}
    .article-card p{color:var(--muted);font-size:14px;margin:0}
    .article-card.featured p{color:#d8d7ea}
    .article-meta{display:flex;align-items:center;gap:10px;color:#8c97a7;font-size:12px}
    .article-card.featured .article-meta{color:#cfd0e6}
    .article-stack{display:grid;gap:18px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    details{padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:#fff}
    summary{cursor:pointer;font-weight:800;list-style:none;padding-right:20px;position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--violet);font-size:21px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{margin:13px 0 0;color:var(--muted);font-size:14px}
    .cta-band{padding:28px 32px;border-radius:var(--radius);background:linear-gradient(135deg,#5f42d8,#37218f);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-band h2{font-size:26px}
    .cta-band p{margin:8px 0 0;color:#ddd9f5}
    .cta-band .secondary-btn{background:#fff;border-color:#fff}
    footer{padding:60px 0 24px;background:#121a30;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:35px}
    .footer-brand{color:#fff}
    .footer-text{max-width:275px;margin:17px 0 0;color:#aeb6cc;font-size:13px}
    .footer-title{margin-bottom:14px;font-size:13px;font-weight:900;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#aeb6cc;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:20px;color:#8993ac;font-size:12px}
    :focus-visible{outline:3px solid rgba(32,184,199,.5);outline-offset:3px}
    @media (max-width:1024px){
      .nav{gap:18px}
      .search{display:none}
      .hero-grid,.topic-layout{grid-template-columns:1fr 1fr;gap:28px}
      .feature-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .notice-inner{justify-content:center}
      .notice-inner span:last-child{display:none}
      .nav{height:68px}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .nav-tools .primary-btn{display:none}
      .menu-toggle{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--violet-deep)}
      .hero-grid,.topic-layout,.article-layout,.compare-layout{grid-template-columns:1fr}
      .page-hero{padding:54px 0}
      section{padding:64px 0}
      .feature-grid,.faq-grid{grid-template-columns:1fr 1fr}
      .data-grid{grid-template-columns:1fr 1fr}
      .data-item:nth-child(2){border-right:0}
      .data-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.15)}
      .cta-band{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
      .footer-grid>div:last-child{display:none}
      .copyright{flex-direction:column;gap:6px}
    }
    @media (max-width:520px){
      h1{font-size:36px}
      .hero-copy{font-size:15px}
      .feature-grid,.faq-grid{grid-template-columns:1fr}
      .section-head{display:block}
      .section-head .section-intro{margin-top:12px}
      .panel-score{grid-template-columns:1fr 1fr}
      .data-item{padding:20px}
      .data-item strong{font-size:27px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-grid>div:last-child{display:block}
    }