/* roulang page: index */
:root{
  --bg:#0E0B1C;
  --bg-alt:#14102B;
  --bg-alt2:#1A1533;
  --line:#2A2344;
  --divider:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-hover:#E85A1E;
  --brand-active:#CF4D14;
  --cyan:#31E0C4;
  --purple:#8A7CFF;
  --ok:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --txt:#F2F0FA;
  --txt-2:#B9B3D0;
  --txt-3:#7E7896;
  --paper:#F7F5FB;
  --paper-ink:#1E1A2E;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow:0 18px 40px rgba(8,5,20,.55);
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font-family:var(--font);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--txt);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.15;font-weight:800}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25}
h3{font-size:18px;line-height:1.4;font-weight:600}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:var(--brand);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--tint{background:var(--bg-alt2);background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:24px 24px}
.section--dark{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head p{margin:10px 0 0;color:var(--txt-2);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);display:block}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--bg);border-bottom:1px solid var(--line);transition:background .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:rgba(14,11,28,.88);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 12px 30px rgba(4,2,12,.6)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;flex-shrink:0}
.brand:hover{color:#fff}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;font-weight:800;font-size:18px;color:#1B0900;background:linear-gradient(135deg,var(--brand),#FFA05C);clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%)}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:.01em}
.brand-text span{font-size:11px;color:var(--txt-3);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:block;padding:10px 14px;color:var(--txt-2);font-size:15px;font-weight:500}
.nav-links a::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;padding:0;place-items:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle span+span{margin-top:4px}
.nav-drawer{position:fixed;inset:0;z-index:120;display:none}
.nav-drawer.is-open{display:block}
.nav-drawer__mask{position:absolute;inset:0;background:rgba(6,4,14,.72)}
.nav-drawer__panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--bg-alt);border-left:1px solid var(--line);padding:22px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.nav-drawer__panel > a{padding:14px 6px;font-size:16px;color:var(--txt-2);border-bottom:1px solid var(--divider);min-height:44px;display:flex;align-items:center}
.nav-drawer__panel > a:hover,.nav-drawer__panel > a.is-active{color:#fff}
.drawer-close{align-self:flex-end;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--txt);font-size:22px;line-height:1;cursor:pointer;margin-bottom:10px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;text-align:center;line-height:1.2}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(255,107,44,.24)}
.btn--primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,107,44,.4)}
.btn--primary:active{background:var(--brand-active);transform:translateY(0)}
.btn--ghost{background:transparent;color:var(--txt);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brand);color:#fff}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.link-text{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14px;font-weight:600;border-bottom:2px solid rgba(49,224,196,.4);padding-bottom:2px}
.link-text:hover{color:var(--brand);border-color:rgba(255,107,44,.5)}

/* ---------- badges / tags ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;background:rgba(138,124,255,.12);color:var(--purple);font-size:13px;font-weight:600;line-height:1.5}
.badge--brand{background:rgba(255,107,44,.14);color:var(--brand)}
.badge--cyan{background:rgba(49,224,196,.12);color:var(--cyan)}
.dot{width:6px;height:6px;border-radius:50%;display:inline-block}
.dot--ok{background:var(--ok)}
.dot--warn{background:var(--warn)}
.dot--danger{background:var(--danger)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--txt-2);font-size:14px;transition:all .2s ease}
.tag:hover{border-color:var(--brand);color:#fff;background:rgba(255,107,44,.08)}

/* ---------- cut card ---------- */
.cut-card{position:relative;background:var(--bg-alt);box-shadow:inset 0 0 0 1px var(--line);clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%)}
.card{position:relative;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:24px;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.55);box-shadow:0 26px 50px rgba(8,5,20,.7)}

/* ---------- hero ---------- */
.hero{position:relative;padding:96px 0;overflow:hidden;background-image:linear-gradient(115deg,rgba(14,11,28,.95) 0%,rgba(14,11,28,.82) 45%,rgba(14,11,28,.66) 100%),url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero h1{margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--txt-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.hero-note{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--txt-3);max-width:520px;line-height:1.7}
.hero-note i{color:var(--cyan);margin-top:4px}
.login-panel{padding:28px;position:relative}
.login-panel__head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.login-panel__head h2{font-size:19px;font-weight:700}
.login-panel__tip{font-size:13px;color:var(--txt-3);margin:0 0 20px;line-height:1.7}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--txt-2);margin-bottom:7px}
.field input{width:100%;padding:14px 16px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-btn);color:var(--txt);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}
.field input::placeholder{color:#5F5A78}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,44,.14);caret-color:var(--cyan)}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-img{flex:0 0 96px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-btn);background:linear-gradient(135deg,#1F1940,#2B2350);color:var(--cyan);font-family:var(--mono);font-size:17px;letter-spacing:.18em;font-weight:700;-webkit-user-select:none;user-select:none}
.chk{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--txt-2);margin:4px 0 20px;cursor:pointer;min-height:24px}
.chk input{position:absolute;opacity:0;width:0;height:0}
.chk-box{width:18px;height:18px;border-radius:5px;border:1.5px solid var(--line);background:var(--bg);flex:0 0 18px;display:grid;place-items:center;transition:all .2s ease}
.chk-box::after{content:"";width:9px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg) scale(.2);opacity:0;transition:all .2s ease;margin-top:-2px}
.chk input:checked + .chk-box{background:var(--brand);border-color:var(--brand)}
.chk input:checked + .chk-box::after{opacity:1;transform:rotate(-45deg) scale(1)}
.chk input:focus-visible + .chk-box{outline:2px solid var(--cyan);outline-offset:2px}
.login-panel__links{display:flex;justify-content:space-between;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--divider);font-size:14px}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px 22px;position:relative;overflow:hidden}
.metric__num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(30px,3.4vw,42px);font-weight:700;color:var(--brand);line-height:1.1}
.metric__num small{font-size:15px;color:var(--txt-2);margin-left:4px;font-family:var(--font);font-weight:600}
.metric__label{font-size:13px;color:var(--txt-2);margin-top:8px}
.metric__bar{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(49,224,196,.14)}
.metric__bar i{display:block;height:100%;background:var(--cyan)}

/* ---------- service matrix ---------- */
.matrix-layout{display:grid;grid-template-columns:5fr 7fr;gap:22px;align-items:start}
.matrix-main{padding:0;overflow:hidden}
.matrix-main__img{position:relative;aspect-ratio:16/9;overflow:hidden}
.matrix-main__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.matrix-main:hover .matrix-main__img img{transform:scale(1.04)}
.matrix-main__body{padding:26px}
.matrix-main__body h3{font-size:21px;margin-bottom:10px}
.matrix-main__body p{font-size:14px;color:var(--txt-2);line-height:1.75}
.point-list{margin:16px 0 22px}
.point-list li{position:relative;padding-left:22px;font-size:14px;color:var(--txt-2);line-height:1.8;margin-bottom:8px}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;background:var(--brand);border-radius:2px}
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.mini-card{padding:24px;display:flex;flex-direction:column;gap:10px}
.mini-card:nth-child(2){transform:translateY(18px)}
.mini-card:nth-child(3){transform:translateY(-6px)}
.mini-card:nth-child(2):hover,.mini-card:nth-child(3):hover{transform:translateY(10px)}
.mini-card i.ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(49,224,196,.1);color:var(--cyan);font-size:18px}
.mini-card h3{font-size:17px}
.mini-card p{font-size:13.5px;color:var(--txt-3);margin:0;line-height:1.7}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-alt)}
.compare__col{padding:28px}
.compare__col + .compare__col{border-left:1px solid var(--divider);background:rgba(255,107,44,.04)}
.compare__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--divider)}
.compare__head h3{font-size:17px}
.compare-row{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--divider);font-size:14px}
.compare-row:last-child{border-bottom:0}
.compare__col:first-child .compare-row{color:var(--txt-3)}
.compare__col:last-child .compare-row{color:var(--txt-2);border-left:2px solid rgba(255,107,44,.45);padding-left:14px;margin-left:-14px}
.compare-row b{font-weight:600;color:var(--txt);font-size:14px;white-space:nowrap}
.compare__col:last-child .compare-row b{color:var(--brand)}

/* ---------- devices ---------- */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.device-card{padding:24px}
.device-card h3{font-size:17px;margin-bottom:8px}
.device-card p{font-size:14px;color:var(--txt-2);margin:0;line-height:1.75}
.device-card .badge{margin-bottom:12px}
.device-card ul{margin-top:14px}
.device-card ul li{font-size:13.5px;color:var(--txt-3);padding-left:16px;position:relative;line-height:1.8}
.device-card ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- news / cms ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.news-card__img{aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.news-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-card__img img{transform:scale(1.04)}
.news-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:#fff}
.news-card__body p{font-size:14px;color:var(--txt-3);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--divider);font-size:13px;color:var(--txt-3);font-family:var(--mono);font-variant-numeric:tabular-nums}
.news-card__meta a{font-family:var(--font);font-size:13.5px}
.empty-state{grid-column:1/-1;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border:1px dashed var(--line);border-radius:var(--r-card);background:rgba(255,255,255,.015);padding:32px;text-align:center}
.empty-state i{font-size:28px;color:var(--txt-3)}
.empty-state p{color:var(--txt-2);font-size:15px;margin:0}

/* ---------- community ---------- */
.community-layout{display:grid;grid-template-columns:7fr 5fr;gap:22px;align-items:start}
.notice-bar{display:flex;align-items:center;gap:10px;padding:14px 18px;border-radius:var(--r-sm);border:1px solid rgba(255,176,32,.28);background:rgba(255,176,32,.07);color:#FFD08A;font-size:14px;margin-bottom:22px}
.notice-bar i{color:var(--warn)}
.rank-list li{display:flex;align-items:flex-start;gap:16px;padding:18px 0;border-bottom:1px solid var(--divider)}
.rank-list li:last-child{border-bottom:0}
.rank-no{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--line);min-width:34px;line-height:1.4;font-variant-numeric:tabular-nums}
.rank-list li:nth-child(1) .rank-no{color:var(--brand)}
.rank-list li:nth-child(2) .rank-no{color:var(--purple)}
.rank-list li:nth-child(3) .rank-no{color:var(--cyan)}
.rank-main{flex:1;min-width:0}
.rank-main a{color:var(--txt);font-size:15.5px;font-weight:600;line-height:1.6;display:block}
.rank-main a:hover{color:var(--brand)}
.rank-meta{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:13px;color:var(--txt-3);flex-wrap:wrap}
.avatar-group{display:flex;align-items:center}
.av{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;color:#150800;border:2px solid var(--bg-alt);margin-left:-8px;font-style:normal;background:linear-gradient(135deg,var(--c1),var(--c2))}
.av:first-child{margin-left:0}
.count-badge{font-family:var(--mono);font-size:12px;padding:3px 9px;border-radius:999px;background:rgba(138,124,255,.14);color:var(--purple);white-space:nowrap;font-variant-numeric:tabular-nums}
.side-card{padding:24px;margin-bottom:22px}
.side-card h3{font-size:17px;margin-bottom:14px}
.side-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--divider);font-size:14px;color:var(--txt-2)}
.side-list li:last-child{border-bottom:0}
.side-list a{color:var(--txt-2)}
.side-list a:hover{color:#fff}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion{background:transparent;border:0;padding-left:18px;margin:0}
.accordion-item{position:relative;background:transparent;border:0;border-bottom:1px solid var(--divider)}
.accordion-item::before{content:"";position:absolute;left:-18px;top:18px;bottom:18px;width:3px;border-radius:3px;background:transparent;transition:background .25s ease}
.accordion-item.is-active::before{background:var(--brand)}
.accordion-title{background:transparent;border:0;color:var(--txt);font-size:16px;font-weight:600;padding:20px 46px 20px 0;position:relative;line-height:1.6;transition:color .2s ease}
.accordion-title:hover{color:var(--brand)}
.accordion-title::before{display:none!important}
.accordion-title::after{content:"";position:absolute;right:8px;top:50%;width:9px;height:9px;border-right:2px solid var(--txt-3);border-bottom:2px solid var(--txt-3);transform:translateY(-70%) rotate(45deg);transition:transform .25s ease,border-color .25s ease}
.accordion-item.is-active .accordion-title{color:#fff}
.accordion-item.is-active .accordion-title::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand)}
.accordion-content{background:transparent;border:0;padding:0 46px 24px 0;color:var(--txt-2);font-size:15px;line-height:1.8}
.accordion-content p:last-child{margin-bottom:0}

/* ---------- cta form ---------- */
.cta-layout{display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:start}
.cta-intro h2{margin-bottom:14px}
.cta-intro p{color:var(--txt-2);font-size:15px}
.cta-points{margin-top:22px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--txt-2);padding:10px 0;border-bottom:1px solid var(--divider)}
.cta-points li i{color:var(--cyan);margin-top:5px}
.form-card{padding:30px}
.form-card:hover{border-color:rgba(255,107,44,.55)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-card .btn--primary{margin-top:6px}
.form-hint{font-size:13px;color:var(--txt-3);margin:14px 0 0;text-align:center}
.form-hint a{color:var(--cyan)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand p{font-size:14px;color:var(--txt-3);line-height:1.8;margin:16px 0 0;max-width:300px}
.footer-col h4{font-size:14px;color:var(--txt-2);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--txt-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--txt-3);margin:0 0 10px;line-height:1.8}
.footer-bottom{border-top:1px solid var(--divider);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--txt-3)}
.footer-bottom a{color:var(--txt-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .section{padding:72px 0}
  .matrix-layout,.community-layout,.cta-layout{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare__col + .compare__col{border-left:0;border-top:1px solid var(--divider)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .device-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .mini-card:nth-child(2),.mini-card:nth-child(3){transform:none}
  .mini-card:nth-child(2):hover,.mini-card:nth-child(3):hover{transform:translateY(-4px)}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero{padding:56px 0}
  .metrics{grid-template-columns:1fr}
  .device-grid,.news-grid,.mini-grid,.form-row{grid-template-columns:1fr}
  .section-head{margin-bottom:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1/-1}
  .compare__col{padding:22px}
  .form-card{padding:22px}
  .login-panel{padding:22px}
}
@media (max-width:575px){
  .hero-actions .btn,.cta-intro .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .code-img{flex-basis:80px;font-size:15px}
}

/* roulang page: article */
:root{
  --bg:#0E0B1C;
  --bg-alt:#14102B;
  --bg-alt2:#1A1533;
  --line:#2A2344;
  --line-soft:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-hover:#E85A1E;
  --brand-active:#CF4D14;
  --cyan:#31E0C4;
  --violet:#8A7CFF;
  --ok:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --text:#F2F0FA;
  --text-2:#B9B3D0;
  --text-3:#7E7896;
  --ink:#1E1A2E;
  --paper:#F7F5FB;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow:0 18px 40px rgba(8,5,20,.55);
  --shadow-hi:0 24px 54px rgba(8,5,20,.72);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.grid-bg{
  background-color:var(--bg-alt2);
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(14,11,28,.86);
  backdrop-filter:blur(10px);
  box-shadow:0 12px 30px rgba(5,3,14,.5);
}
.header-inner{display:flex;align-items:center;gap:var(--s5);min-height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#FF9A55);
  color:#1A0B02;font-weight:800;font-size:19px;
  box-shadow:0 10px 24px rgba(255,107,44,.28);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--text)}
.brand-text span{font-size:11px;letter-spacing:.22em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:var(--s5);margin:0 0 0 auto}
.nav-links a{
  position:relative;display:inline-block;
  padding:6px 2px;font-size:15px;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width .25s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{width:100%}
.header-cta{flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:transparent;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;margin-left:auto;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.nav-mask{position:fixed;inset:0;background:rgba(6,4,14,.65);opacity:0;visibility:hidden;transition:.25s;z-index:55}
body.menu-open .nav-mask{opacity:1;visibility:visible}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#1A0B02;box-shadow:0 12px 26px rgba(255,107,44,.24)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 16px 32px rgba(255,107,44,.36)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--text-2);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--cyan);
  font-weight:600;font-size:15px;border-bottom:2px solid rgba(49,224,196,.4);padding-bottom:2px;
}
.btn-link:hover{border-bottom-color:var(--cyan);color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:var(--s8) 0 var(--s7);
  background-color:var(--bg-alt);
  background-image:linear-gradient(180deg,rgba(14,11,28,.55),rgba(20,16,43,.96)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:var(--s5)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#4b4368}
.breadcrumb .current{color:var(--text-2)}
.article-hero h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.15;font-weight:800;letter-spacing:-.01em;
  max-width:900px;margin-bottom:var(--s5);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s4);font-size:13px;color:var(--text-3)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;
  background:rgba(138,124,255,.12);color:var(--violet);border:1px solid rgba(138,124,255,.28);
}
.badge-cyan{background:rgba(49,224,196,.1);color:var(--cyan);border-color:rgba(49,224,196,.28)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{color:var(--text-3)}
.cover-wrap{margin-top:var(--s6);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}
/* ---------- layout ---------- */
.main-wrap{padding:var(--s7) 0 var(--s8);background:var(--bg)}
.reading-card{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--r-card);
  padding:var(--s7);
  box-shadow:var(--shadow);
  max-width:760px;
  margin:0 auto;
}
.reading-card .lead{
  font-size:16px;color:#4a4463;border-left:3px solid var(--brand);
  padding-left:var(--s4);margin-bottom:var(--s6);line-height:1.85;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);word-break:break-word}
.article-body h2{
  position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;
  margin:40px 0 16px;padding-left:16px;color:#15112a;
}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--brand);border-radius:2px}
.article-body h3{font-size:19px;font-weight:600;line-height:1.45;margin:28px 0 12px;color:#1b1731}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;line-height:1.9}
.article-body ul li::before{content:"";position:absolute;left:4px;top:13px;width:9px;height:9px;background:var(--brand);border-radius:2px}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:4px;width:18px;height:18px;
  display:grid;place-items:center;font-size:11px;font-weight:700;font-family:var(--mono);
  color:#fff;background:var(--brand);border-radius:5px;
}
.article-body a{color:#C0491A;border-bottom:1px solid rgba(192,73,26,.35)}
.article-body a:hover{color:#8f3410;border-bottom-color:#8f3410}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--cyan);
  background:rgba(49,224,196,.09);border-radius:0 var(--r-sm) var(--r-sm) 0;color:#26464a;
}
.article-body img{border-radius:var(--r-sm);margin:12px 0;border:1px solid rgba(30,26,46,.1)}
.article-body code{
  font-family:var(--mono);font-size:14px;background:rgba(30,26,46,.07);
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:#15122a;color:#EDEAF8;padding:18px;border-radius:var(--r-sm);
  overflow:auto;border:1px solid var(--line);margin:20px 0;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;border:1px solid rgba(30,26,46,.14);font-size:15px}
.article-body th,.article-body td{padding:11px 14px;border:1px solid rgba(30,26,46,.12);text-align:left}
.article-body thead th{background:rgba(30,26,46,.06);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(30,26,46,.03)}
.article-body hr{border:none;border-top:1px solid rgba(30,26,46,.14);margin:32px 0}
.empty-state{
  text-align:center;padding:64px 24px;background:var(--bg-alt);
  border:1px dashed var(--line);border-radius:var(--r-card);color:var(--text-2);min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
}
.empty-state i{font-size:34px;color:var(--violet)}
.empty-state h2{font-size:22px;color:var(--text)}
.empty-state p{font-size:15px;color:var(--text-3);max-width:480px}
/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:var(--s5)}
.side-card{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--r-card);padding:var(--s5);
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,0 100%);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:var(--s4);letter-spacing:.02em}
.toc-list li{margin-bottom:10px}
.toc-list a{font-size:14px;color:var(--text-2);display:flex;gap:8px;align-items:flex-start;line-height:1.5}
.toc-list a::before{content:"";width:6px;height:6px;border-radius:99px;background:var(--line);margin-top:8px;flex:none;transition:.2s}
.toc-list a:hover{color:#fff}
.toc-list a:hover::before{background:var(--brand)}
.hot-list li{padding:12px 0;border-bottom:1px solid var(--line-soft)}
.hot-list li:last-child{border-bottom:none;padding-bottom:0}
.hot-list a{display:block;font-size:14px;line-height:1.6;color:var(--text-2)}
.hot-list a:hover{color:var(--brand)}
.hot-list .hot-meta{display:block;font-size:12px;color:var(--text-3);margin-top:4px}
.cta-card{
  background:linear-gradient(160deg,rgba(255,107,44,.16),rgba(138,124,255,.12)),var(--bg-alt2);
  border-color:rgba(255,107,44,.32);
}
.cta-card p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.75}
/* ---------- related ---------- */
.related-section{padding:var(--s8) 0;background:var(--bg-alt2);border-top:1px solid var(--line-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s5);margin-bottom:var(--s6);flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.25}
.section-head p{font-size:14px;color:var(--text-3);margin-top:6px}
.card-grid{display:grid;gap:var(--s5);grid-template-columns:repeat(3,minmax(0,1fr))}
.post-card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.45);box-shadow:var(--shadow-hi)}
.post-card .thumb{overflow:hidden;aspect-ratio:16/9;background:var(--bg)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .card-body{padding:var(--s5);display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover h3{color:#fff}
.post-card p{font-size:14px;line-height:1.7;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card .card-meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg-alt2);color:var(--text-2);font-size:13px;
  transition:.2s;
}
.tag:hover{border-color:var(--brand);color:#fff}
/* ---------- cta strip ---------- */
.cta-strip{padding:var(--s8) 0;background:var(--bg)}
.cta-inner{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:var(--s5);padding:var(--s7);border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(255,107,44,.14),rgba(49,224,196,.08)),var(--bg-alt);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:var(--s3);flex-wrap:wrap}
/* ---------- footer ---------- */
.site-footer{background:#0A0817;border-top:1px solid var(--line);padding:var(--s8) 0 var(--s4)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--s6)}
.footer-brand .brand{margin-bottom:var(--s4)}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:380px}
.footer-col h4{font-size:14px;color:var(--text-2);font-weight:700;margin-bottom:var(--s4);letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.8;margin-bottom:10px;word-break:break-word}
.footer-bottom{
  margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s3);
  font-size:13px;color:var(--text-3);
}
/* ---------- responsive ---------- */
@media (max-width:1023px){
  .header-inner{gap:var(--s4)}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  nav[aria-label="主导航"]{
    position:fixed;top:0;right:0;height:100vh;width:min(86vw,340px);
    background:var(--bg-alt);border-left:1px solid var(--line);z-index:60;
    padding:88px 24px 32px;transform:translateX(102%);
    transition:transform .28s ease;overflow-y:auto;
  }
  nav[aria-label="主导航"].is-open{transform:translateX(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;margin:0}
  .nav-links li{border-bottom:1px solid var(--line-soft)}
  .nav-links a{display:block;padding:16px 4px;font-size:16px;min-height:44px}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand)}
  .reading-card{padding:var(--s6)}
  .sidebar{position:static;margin-top:var(--s6)}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--s5)}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .article-hero{padding:var(--s7) 0 var(--s6)}
  .main-wrap{padding:var(--s6) 0 var(--s7)}
  .reading-card{padding:var(--s5)}
  .article-body{font-size:16.5px}
  .card-grid{grid-template-columns:1fr}
  .cta-inner{padding:var(--s6)}
  .footer-grid{grid-template-columns:1fr}
  .related-section,.cta-strip{padding:56px 0}
}
@media (max-width:575px){
  h1{letter-spacing:0}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .brand-text b{font-size:15px}
}

/* roulang page: category1 */
:root{
  --bg:#0E0B1C;
  --bg-alt:#14102B;
  --bg-alt2:#1A1533;
  --line:#2A2344;
  --line-soft:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-hover:#E85A1E;
  --brand-active:#CF4D14;
  --cyan:#31E0C4;
  --violet:#8A7CFF;
  --success:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --text:#F2F0FA;
  --text-2:#B9B3D0;
  --text-3:#7E7896;
  --paper:#F7F5FB;
  --paper-text:#1E1A2E;
  --r-card:18px;
  --r-inner:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(8,5,20,.55);
  --shadow-hover:0 26px 56px rgba(8,5,20,.72);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;z-index:200}
.skip-link:focus{left:12px;top:12px}

.container,.grid-container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.grid-container{max-width:var(--container)}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(14,11,28,.9);backdrop-filter:blur(12px);box-shadow:0 12px 32px rgba(4,2,12,.6)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),#ff9d63);
  color:#fff;font-weight:800;font-size:18px;line-height:1;
  box-shadow:0 0 0 1px rgba(255,107,44,.4),0 8px 20px rgba(255,107,44,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-text span{font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--text-3)}
.site-nav{margin-left:auto}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;display:inline-block;padding:26px 0;
  font-size:15px;color:var(--text-2);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:22px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(6,4,15,.7);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;
}
.nav-backdrop.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(255,107,44,.28)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,107,44,.36)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;padding:0 0 3px;
  border:0;background:none;color:var(--cyan);font-size:14px;font-weight:600;
  border-bottom:2px solid rgba(49,224,196,.5);cursor:pointer;transition:color .2s ease,border-color .2s ease;
}
.btn-link:hover{color:#fff;border-color:var(--brand)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.4;font-weight:600;
  background:rgba(138,124,255,.12);color:var(--violet);
}
.badge-brand{background:rgba(255,107,44,.12);color:#FF955F}
.badge-cyan{background:rgba(49,224,196,.12);color:var(--cyan)}
.dot{width:6px;height:6px;border-radius:50%;display:inline-block;background:currentColor}
.status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.status-ok .dot{background:var(--success);box-shadow:0 0 0 3px rgba(47,191,113,.18)}
.status-warn .dot{background:var(--warn);box-shadow:0 0 0 3px rgba(255,176,32,.18)}
.status-danger .dot{background:var(--danger);box-shadow:0 0 0 3px rgba(255,77,79,.18)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:6px 14px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.02);
  transition:border-color .2s ease,color .2s ease;
}
.tag:hover{border-color:var(--brand);color:#fff}

/* ============ 卡片 ============ */
.card{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  overflow:hidden;
}
.cut::after{
  content:"";position:absolute;top:-1px;right:-1px;width:24px;height:24px;
  background:var(--cut-bg,var(--bg));
  clip-path:polygon(100% 0,100% 100%,0 0);
  border-top-right-radius:var(--r-card);pointer-events:none;
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.45);box-shadow:var(--shadow-hover),0 0 0 2px rgba(255,107,44,.2)}
.card h3{font-size:19px;font-weight:600;line-height:1.4}
.card p{font-size:14px;line-height:1.7;color:var(--text-2)}
.cover{position:relative;overflow:hidden;border-radius:var(--r-inner);aspect-ratio:16/9;background:#0b0918}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .cover img{transform:scale(1.04)}

/* ============ Hero ============ */
.hero-cat{
  position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(180deg,#14102B 0%,#0E0B1C 100%);
  border-bottom:1px solid var(--line);
  padding:64px 0 68px;
}
.hero-media{position:absolute;inset:0;z-index:-1;overflow:hidden}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.2}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(110% 90% at 8% 0%,rgba(255,107,44,.2),transparent 58%),
    linear-gradient(180deg,rgba(14,11,28,.55),rgba(14,11,28,.96));
}
.hero-inner{max-width:880px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text-2)}
.hero-cat h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.15;font-weight:800;
  letter-spacing:-.01em;margin:16px 0 16px;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-mesh{
  background:var(--bg-alt2);
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;font-weight:700;margin:14px 0 12px}
.section-head p{color:var(--text-2);font-size:16px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.hairline{height:1px;background:var(--line-soft);border:0;margin:0}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px}
.timeline-item{position:relative;padding-left:62px;padding-bottom:36px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:14px;top:26px;bottom:6px;width:0;
  border-left:2px dashed rgba(49,224,196,.4);
}
.timeline-item:last-child::before{display:none}
.timeline-dot{
  position:absolute;left:7px;top:22px;width:16px;height:16px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 5px rgba(255,107,44,.16);
}
.timeline-body{
  position:relative;display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.timeline-body:hover{transform:translateY(-3px);border-color:rgba(255,107,44,.4);box-shadow:var(--shadow-hover)}
.timeline-media{border-radius:var(--r-inner);overflow:hidden;aspect-ratio:16/10;background:#0b0918}
.timeline-media img{width:100%;height:100%;object-fit:cover}
.step-index{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:13px;letter-spacing:.12em;color:var(--cyan);display:block;margin-bottom:6px;
}
.timeline-text h3{font-size:19px;font-weight:600;margin-bottom:8px}
.timeline-text p{font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ 图文交替 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split+.split{margin-top:72px}
.split-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);aspect-ratio:16/11;background:#0b0918}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-body h3{font-size:clamp(20px,2vw,24px);font-weight:700;margin:14px 0 14px}
.split-body p{color:var(--text-2);margin-bottom:18px}
.check-list{margin-top:6px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;
  border-top:1px solid var(--line-soft);font-size:15px;color:var(--text-2);
}
.check-list li:first-child{border-top:0}
.check-list .ico{
  flex:0 0 auto;width:20px;height:20px;margin-top:5px;border-radius:6px;
  display:grid;place-items:center;background:rgba(49,224,196,.14);color:var(--cyan);
  font-size:12px;font-weight:700;
}
.check-list b{color:var(--text);font-weight:600}

/* ============ 方式卡 ============ */
.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mode-card{display:flex;flex-direction:column;height:100%}
.mode-card .mode-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:rgba(255,107,44,.12);color:var(--brand);font-family:var(--mono);
  font-size:15px;font-weight:700;margin-bottom:16px;
}
.mode-card h3{margin-bottom:10px}
.mode-card ul{margin-top:16px;display:grid;gap:10px}
.mode-card ul li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--text-2)}
.mode-card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.mode-foot{margin-top:auto;padding-top:20px}

/* ============ 清单板块 ============ */
.prep-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 32px}
.prep-item{
  display:flex;gap:14px;align-items:flex-start;padding:18px 20px;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-inner);
  transition:border-color .2s ease,transform .2s ease;
}
.prep-item:hover{border-color:rgba(255,107,44,.4);transform:translateY(-2px)}
.prep-item .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;
  color:var(--brand);flex:0 0 auto;padding-top:3px;
}
.prep-item h4{font-size:16px;font-weight:600;margin-bottom:4px}
.prep-item p{font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line-soft)}
.faq-item{border-bottom:1px solid var(--line-soft);position:relative}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 8px 22px 18px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:#fff}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  position:relative;transition:border-color .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);transition:transform .25s ease,background .25s ease;
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item.is-open .faq-icon{border-color:var(--brand);background:rgba(255,107,44,.1)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--brand)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 56px 24px 18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#1A1533 0%,#14102B 60%,#1f1330 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;padding:56px 0;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:12px}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:#0B0918;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{font-size:14px;color:var(--text-3);transition:color .2s ease}
.footer-col li a:hover{color:var(--brand)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--text-3);margin-bottom:10px}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom span{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .mode-grid{grid-template-columns:1fr 1fr}
  .mode-grid .mode-card:last-child{grid-column:span 2}
  .split{gap:32px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
    background:var(--bg-alt);border-left:1px solid var(--line);
    padding:88px 24px 32px;z-index:75;overflow-y:auto;
    transform:translateX(101%);transition:transform .3s ease;box-shadow:-20px 0 50px rgba(4,2,12,.6);
  }
  .site-nav.is-open{transform:translateX(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{display:flex;align-items:center;min-height:48px;padding:12px 0;font-size:16px;border-bottom:1px solid var(--line-soft)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand)}
  .hero-cat{padding:48px 0 52px}
  .timeline-body{grid-template-columns:1fr;gap:18px}
  .timeline-media{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:24px}
  .split.reverse .split-media{order:2}
  .split+.split{margin-top:48px}
  .cta-inner{grid-template-columns:1fr;gap:24px;padding:44px 0}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .container,.grid-container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .header-inner{min-height:66px}
  .brand-text b{font-size:15px}
  .brand-text span{font-size:9px;letter-spacing:.18em}
  .mode-grid{grid-template-columns:1fr}
  .mode-grid .mode-card:last-child{grid-column:auto}
  .prep-grid{grid-template-columns:1fr}
  .timeline-item{padding-left:44px}
  .timeline-item::before{left:10px}
  .timeline-dot{left:3px}
  .timeline-body{padding:18px}
  .faq-q{font-size:16px;padding:18px 4px 18px 14px}
  .faq-a-inner{padding:0 16px 20px 14px}
  .cta-actions .btn{width:100%}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category2 */
:root{
  --bg:#0E0B1C;
  --bg-alt:#14102B;
  --bg-alt2:#1A1533;
  --line:#2A2344;
  --divider:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-hover:#E85A1E;
  --brand-active:#CF4D14;
  --cyan:#31E0C4;
  --violet:#8A7CFF;
  --ok:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --text:#F2F0FA;
  --text-2:#B9B3D0;
  --text-3:#7E7896;
  --paper:#F7F5FB;
  --paper-ink:#1E1A2E;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 18px 40px rgba(8,5,20,.55);
  --shadow-hover:0 26px 54px rgba(8,5,20,.7);
  --container:1200px;
  --sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.85;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.25;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
figure{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.grid-x{--gap:12px;margin-left:calc(var(--gap) / -2);margin-right:calc(var(--gap) / -2)}
.grid-x>.cell{padding-left:calc(var(--gap) / 2);padding-right:calc(var(--gap) / 2)}
.grid-x.g-24{--gap:24px}
.grid-x.g-32{--gap:32px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--bg);border-bottom:1px solid var(--line);transition:background .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:rgba(14,11,28,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 14px 32px rgba(5,3,14,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#FF9C6B);color:#fff;font-weight:800;font-size:18px;box-shadow:0 8px 20px rgba(255,107,44,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:700;color:var(--text)}
.brand-text span{font-size:11px;letter-spacing:.22em;color:var(--text-3);font-family:var(--mono)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-block;padding:10px 12px;font-size:15px;font-weight:500;color:var(--text-2)}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform .25s ease}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;border-radius:2px;background:var(--text);transition:background .2s}
.nav-toggle:hover span{background:var(--brand)}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);z-index:90;display:flex;flex-direction:column;gap:6px;padding:24px;background:var(--bg-alt);border-left:1px solid var(--line);transform:translateX(103%);transition:transform .28s ease;overflow-y:auto}
.mobile-drawer.is-open{transform:none}
.mobile-drawer a{display:block;padding:14px 12px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--divider);min-height:44px}
.mobile-drawer a.is-active{color:#fff}
.mobile-drawer a:hover{color:var(--brand)}
.drawer-title{font-size:12px;letter-spacing:.2em;color:var(--text-3);font-family:var(--mono);margin:6px 0 8px}
.drawer-mask{position:fixed;inset:0;z-index:85;background:rgba(6,4,14,.7);opacity:0;pointer-events:none;transition:opacity .25s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 通用 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(255,107,44,.24)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 14px 32px rgba(255,107,44,.38)}
.btn-primary:active{background:var(--brand-active);transform:none}
.btn-ghost{background:transparent;border:1.5px solid var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--brand);color:#fff}
.btn-lg{padding:15px 26px;font-size:16px}
.btn-sm{padding:10px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--cyan)}
.link-arrow::after{content:"\f061";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;transition:transform .2s ease}
.link-arrow:hover{color:var(--brand)}
.link-arrow:hover::after{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);background:rgba(138,124,255,.12);color:var(--violet);font-size:13px;font-weight:600;line-height:1.6}
.eyebrow{display:inline-block;margin-bottom:14px;font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--cyan);text-transform:uppercase}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--grid{background-color:var(--bg-alt2);background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:24px 24px}
.section-head{max-width:780px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.card{position:relative;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);--notch:var(--bg);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card::after{content:"";position:absolute;top:-1px;right:-1px;width:24px;height:24px;background:linear-gradient(225deg,var(--notch) 0 50%,transparent 50%);border-top-right-radius:var(--r-card);pointer-events:none}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover),0 0 0 2px rgba(255,107,44,.28)}
.section--alt .card,.section--grid .card{--notch:var(--bg-alt)}
.section--grid .card{--notch:var(--bg-alt2)}
.status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.status i{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block}
.status--warn i{background:var(--warn)}
.status--danger i{background:var(--danger)}

/* ---------- 面包屑与 Hero ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:26px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text-2)}
.page-hero{position:relative;padding:52px 0 88px;background:linear-gradient(180deg,rgba(14,11,28,.95),rgba(20,16,43,.97)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat}
.page-hero h1{margin:16px 0 20px;font-size:clamp(30px,4.2vw,48px);font-weight:800;letter-spacing:-.01em;line-height:1.15}
.page-hero .lead{max-width:620px;color:var(--text-2);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 18px}
.hero-note{font-size:13px;color:var(--text-3)}
.hero-figure{position:relative;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow)}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.hero-mini div{padding:14px 12px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg-alt);font-size:13px;color:var(--text-2)}
.hero-mini b{display:block;font-family:var(--mono);font-size:14px;color:var(--cyan);font-weight:600;margin-bottom:2px}

/* ---------- 指标卡 ---------- */
.stat-card{padding:28px 24px 26px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg);overflow:hidden;position:relative;transition:transform .25s ease,border-color .25s ease}
.stat-card:hover{transform:translateY(-4px);border-color:var(--brand)}
.stat-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(34px,3.6vw,44px);font-weight:700;color:var(--brand);line-height:1.1}
.stat-num small{margin-left:6px;font-size:15px;font-weight:500;color:var(--text-2);font-family:var(--sans)}
.stat-label{margin-top:10px;font-size:13px;color:var(--text-2)}
.stat-bar{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(49,224,196,.16)}
.stat-bar i{display:block;height:100%;background:var(--cyan);border-radius:0 3px 3px 0}

/* ---------- 要点卡 ---------- */
.point-card{padding:30px 26px}
.point-icon{width:46px;height:46px;border-radius:var(--r-sm);display:grid;place-items:center;margin-bottom:18px;background:rgba(138,124,255,.14);color:var(--violet);font-size:18px}
.point-card h3{margin-bottom:10px;font-size:19px}
.point-card p{color:var(--text-2);font-size:15px}

/* ---------- 安全清单 ---------- */
.check-panel{background:var(--paper);border-radius:var(--r-card);padding:14px 32px;box-shadow:var(--shadow)}
.check-item{display:flex;align-items:flex-start;gap:14px;padding:20px 0;border-bottom:1px solid rgba(30,26,46,.12);color:var(--paper-ink);font-size:15px;line-height:1.8}
.check-item:last-child{border-bottom:0}
.check-item i{flex:0 0 auto;margin-top:6px;color:var(--brand);font-size:15px}
.check-item b{display:block;font-size:16px;margin-bottom:2px;color:var(--paper-ink)}
.check-item span{color:rgba(30,26,46,.74)}

/* ---------- 提示条 ---------- */
.alert-item{display:flex;gap:16px;padding:22px 22px;border-radius:var(--r-sm);background:rgba(255,77,79,.07);border:1px solid rgba(255,77,79,.28);height:100%}
.alert-item i{color:var(--danger);font-size:18px;margin-top:4px}
.alert-item h3{font-size:16px;margin-bottom:6px}
.alert-item p{color:var(--text-2);font-size:14px}

/* ---------- 流程步骤 ---------- */
.step-card{padding:26px 22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-alt);height:100%;transition:border-color .25s ease,transform .25s ease}
.step-card:hover{border-color:var(--brand);transform:translateY(-4px)}
.step-num{font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--cyan)}
.step-card h3{margin:10px 0 8px;font-size:18px}
.step-card p{color:var(--text-2);font-size:14px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{background:transparent;border-bottom:1px solid var(--divider)}
.accordion-title{position:relative;display:block;padding:22px 54px 22px 22px;background:transparent;border:0;color:var(--text);font-size:17px;font-weight:600;line-height:1.5;transition:color .2s ease,background .2s ease}
.accordion-title:hover{color:#fff;background:rgba(255,255,255,.02)}
.accordion-title::after{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:transparent;transition:background .2s ease}
.accordion-title[aria-expanded="true"]::after{background:var(--brand)}
.accordion-title::before{content:"\f107";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--text-3);transition:transform .22s ease,color .22s ease}
.accordion-title[aria-expanded="true"]::before{transform:translateY(-50%) rotate(180deg);color:var(--brand)}
.accordion-content{background:transparent;border:0;padding:0 22px 24px 22px;color:var(--text-2);font-size:15px;line-height:1.8}
.accordion-content p{margin:0}

/* ---------- 继续查看 ---------- */
.mini-card{display:flex;align-items:center;gap:16px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg-alt);transition:border-color .25s ease,transform .25s ease}
.mini-card:hover{border-color:var(--brand);transform:translateY(-3px)}
.section--alt .mini-card,.section--grid .mini-card{background:var(--bg)}
.mini-card i{width:40px;height:40px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center;background:rgba(49,224,196,.12);color:var(--cyan);font-size:16px}
.mini-card b{display:block;font-size:16px;color:var(--text)}
.mini-card span{font-size:13px;color:var(--text-3)}

/* ---------- CTA ---------- */
.cta-band{position:relative;border:1px solid var(--line);border-radius:24px;overflow:hidden;padding:56px;background:var(--bg-alt2) url("/assets/images/backpic/back-3.webp") center/cover no-repeat;box-shadow:var(--shadow)}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(14,11,28,.95),rgba(14,11,28,.72))}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);max-width:640px}
.cta-inner p{margin-top:12px;color:var(--text-2);max-width:620px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;padding:72px 0 0;background:#0A0816;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-col h4{margin-bottom:16px;font-size:14px;color:var(--text-2);letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{margin-bottom:10px;font-size:14px;color:var(--text-3);line-height:1.8}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:22px 0 28px;border-top:1px solid var(--divider);font-size:13px;color:var(--text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .header-inner{gap:14px}
  .nav-links a{padding:10px 9px;font-size:14px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .header-cta{display:none}
  .cta-band{padding:44px 28px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:36px 0 60px}
  .hero-mini{grid-template-columns:1fr 1fr}
  .check-panel{padding:10px 20px}
  .cta-band{padding:32px 22px;border-radius:18px}
  .cta-inner{align-items:flex-start}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-mini{grid-template-columns:1fr}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .btn-lg{padding:14px 20px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category3 */
:root{
  --bg:#0E0B1C;
  --bg-2:#14102B;
  --bg-3:#1A1533;
  --line:#2A2344;
  --line-soft:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-hover:#E85A1E;
  --brand-active:#CF4D14;
  --cyan:#31E0C4;
  --violet:#8A7CFF;
  --ok:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --text:#F2F0FA;
  --text-2:#B9B3D0;
  --text-3:#7E7896;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow:0 18px 40px rgba(8,5,20,.55);
  --shadow-hover:0 26px 56px rgba(8,5,20,.72);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(14,11,28,.9);
  backdrop-filter:blur(14px);
  box-shadow:0 12px 34px rgba(8,5,20,.55);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#FF8A4C,#E85A1E);
  color:#0E0B1C;font-weight:800;font-size:17px;
  box-shadow:0 8px 20px rgba(255,107,44,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:15px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-text span{font-size:10px;letter-spacing:.2em;color:var(--text-3);font-family:var(--mono);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);width:0;transition:width .25s ease;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{width:calc(100% - 28px);}
.nav-links a.is-active{color:#fff;}
.nav-links a.is-active::after{width:calc(100% - 28px);}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  background:transparent;border:1.5px solid var(--line);color:var(--text-2);
  padding:9px 14px;border-radius:var(--r-btn);font-size:14px;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:#fff;}
.nav-scrim{
  position:fixed;inset:0;background:rgba(6,4,16,.7);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:69;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:66px 0 58px;
  background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  opacity:.2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:var(--text-3);transition:color .2s ease;}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#453D63;}
.crumbs .now{color:var(--text-2);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.01em;
  max-width:860px;
}
.page-hero h1 .hl{color:var(--brand);}
.hero-lead{
  margin-top:18px;max-width:720px;color:var(--text-2);font-size:16px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;font-size:13px;
  background:rgba(138,124,255,.12);color:var(--violet);
  border:1px solid rgba(138,124,255,.22);
}
.tag.cyan{background:rgba(49,224,196,.1);color:var(--cyan);border-color:rgba(49,224,196,.22);}
.tag.orange{background:rgba(255,107,44,.12);color:#FF9A66;border-color:rgba(255,107,44,.26);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 28px rgba(255,107,44,.28);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 16px 36px rgba(255,107,44,.42);}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2);}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-line{
  background:none;border:none;padding:2px 0;color:var(--cyan);font-size:14px;font-weight:600;
  border-bottom:2px solid rgba(49,224,196,.45);cursor:pointer;border-radius:0;
  transition:color .2s ease,border-color .2s ease;
}
.btn-line:hover{color:#fff;border-color:var(--brand);}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-2);}
.section-dark{background:var(--bg-3);position:relative;}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
.section-dark > .container{position:relative;z-index:2;}
.section-head{margin-bottom:38px;max-width:760px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.28;font-weight:700;letter-spacing:-.005em;
}
.section-head h2::before{
  content:"";display:block;width:44px;height:3px;border-radius:2px;background:var(--brand);margin-bottom:16px;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.9;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center h2::before{margin-left:auto;margin-right:auto;}

/* ---------- quick cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.qcard{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.qcard::after{
  content:"";position:absolute;top:12px;right:12px;width:12px;height:12px;
  border-top:2px solid rgba(255,107,44,.55);border-right:2px solid rgba(255,107,44,.55);
  opacity:.9;
}
.qcard:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.55);box-shadow:var(--shadow-hover);}
.qcard-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0B0918;}
.qcard-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;opacity:.86;}
.qcard:hover .qcard-cover img{transform:scale(1.04);opacity:1;}
.qcard-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 11px;border-radius:999px;font-size:13px;line-height:1.6;
  background:rgba(138,124,255,.12);color:var(--violet);
}
.badge.orange{background:rgba(255,107,44,.12);color:#FF9A66;}
.badge.cyan{background:rgba(49,224,196,.1);color:var(--cyan);}
.qcard h3{font-size:18px;font-weight:600;line-height:1.45;}
.qcard p{color:var(--text-2);font-size:14px;line-height:1.75;}
.qcard .qcard-foot{margin-top:auto;padding-top:6px;}

/* ---------- split layout ---------- */
.split{display:grid;grid-template-columns:minmax(0,3.2fr) minmax(0,8.8fr);gap:36px;align-items:start;}
.side-toc{
  position:sticky;top:100px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--shadow);
}
.side-toc-title{font-size:13px;letter-spacing:.14em;color:var(--text-3);font-family:var(--mono);text-transform:uppercase;margin-bottom:16px;}
.side-toc ul{display:flex;flex-direction:column;gap:2px;}
.side-toc a{
  display:block;padding:10px 12px 10px 14px;font-size:14px;color:var(--text-2);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.side-toc a:hover{color:#fff;background:rgba(255,255,255,.04);}
.side-toc a.is-current{color:#fff;border-left-color:var(--brand);background:rgba(255,107,44,.08);}
.side-toc-note{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);line-height:1.8;
}
.side-toc-note b{display:block;color:var(--text-2);font-size:13px;margin-bottom:6px;}

/* ---------- issues ---------- */
.issue-list{display:flex;flex-direction:column;gap:20px;}
.issue{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 26px 22px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.issue:hover{border-color:rgba(255,107,44,.45);box-shadow:0 20px 44px rgba(8,5,20,.5);}
.issue-head{display:flex;align-items:flex-start;gap:14px;flex-wrap:wrap;}
.issue-index{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand);
  background:rgba(255,107,44,.1);border:1px solid rgba(255,107,44,.25);
  padding:3px 10px;border-radius:8px;line-height:1.7;flex:0 0 auto;
}
.issue h3{font-size:19px;font-weight:600;line-height:1.5;flex:1 1 260px;}
.issue-lead{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.85;}
.issue-toggle{
  margin-top:16px;display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1.5px solid var(--line);color:var(--text-2);
  padding:9px 16px;border-radius:var(--r-btn);font-size:14px;font-weight:600;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.issue-toggle:hover{border-color:var(--brand);color:#fff;}
.issue-toggle i{transition:transform .3s ease;font-size:12px;}
.issue-toggle[aria-expanded="true"] i{transform:rotate(180deg);}
.issue-body{max-height:0;overflow:hidden;opacity:0;transition:max-height .32s ease,opacity .26s ease,padding .26s ease;padding-top:0;}
.issue-body.is-open{opacity:1;padding-top:18px;}
.steps{display:flex;flex-direction:column;gap:12px;counter-reset:step;}
.steps li{
  position:relative;padding-left:40px;color:var(--text-2);font-size:14px;line-height:1.8;
}
.steps li::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:12px;font-weight:700;
  color:var(--cyan);background:rgba(49,224,196,.1);border:1px solid rgba(49,224,196,.25);
}
.steps li b{color:var(--text);font-weight:600;}
.hint{
  margin-top:16px;display:flex;gap:11px;align-items:flex-start;
  padding:13px 16px;border-radius:var(--r-sm);
  background:rgba(255,176,32,.07);border-left:3px solid var(--warn);
  font-size:13px;color:var(--text-2);line-height:1.75;
}
.hint i{color:var(--warn);margin-top:4px;font-size:13px;}
.hint.ok{background:rgba(47,191,113,.07);border-left-color:var(--ok);}
.hint.ok i{color:var(--ok);}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.acc-item{border-bottom:1px solid var(--line-soft);}
.acc-item:first-child{border-top:1px solid var(--line-soft);}
.acc-head{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.acc-head:hover{color:var(--brand);}
.acc-head .chev{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-3);font-size:11px;
  transition:transform .3s ease,color .2s ease,border-color .2s ease;
}
.acc-head[aria-expanded="true"]{color:#fff;}
.acc-head[aria-expanded="true"] .chev{transform:rotate(180deg);border-color:var(--brand);color:var(--brand);}
.acc-panel{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s ease,opacity .25s ease;}
.acc-panel.is-open{opacity:1;}
.acc-panel-inner{padding:0 4px 24px 4px;font-size:15px;line-height:1.9;color:var(--text-2);}
.acc-item.is-open{border-bottom-color:rgba(255,107,44,.35);}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#1A1533 0%,#221640 55%,#1A1533 100%);
  border:1px solid var(--line);border-radius:22px;
  padding:48px 44px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:32px;align-items:center;box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;top:-60px;right:-40px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,44,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{background:#0A0817;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.85;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .2s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.85;margin-bottom:10px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .split{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side-toc{position:static;}
  .side-toc ul{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .side-toc a{border-left:none;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;}
  .side-toc a.is-current{border-color:var(--brand);background:rgba(255,107,44,.1);}
  .side-toc-note{display:none;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--bg-2);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s ease;
    padding:92px 22px 28px;overflow-y:auto;z-index:75;
  }
  .site-nav.is-open{transform:translateX(0);}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-links a{padding:15px 12px;font-size:16px;border-bottom:1px solid var(--line-soft);border-radius:0;}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:#fff;border-left:3px solid var(--brand);padding-left:14px;background:rgba(255,107,44,.07);}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:38px 26px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero{padding:46px 0 42px;}
  .hero-actions .btn{width:100%;}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:18px;}
  .issue{padding:22px 18px 18px;}
  .issue h3{font-size:17px;}
  .acc-head{font-size:15.5px;padding:18px 2px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .side-toc ul{gap:7px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px;}
  .brand-text b{font-size:14px;}
  .btn{padding:12px 18px;font-size:14.5px;}
  .cta-band{padding:30px 20px;border-radius:18px;}
}

/* roulang page: category4 */
:root{
  --bg:#0E0B1C;
  --bg-alt:#14102B;
  --bg-alt2:#1A1533;
  --line:#2A2344;
  --divider:rgba(255,255,255,.07);
  --brand:#FF6B2C;
  --brand-h:#E85A1E;
  --brand-a:#CF4D14;
  --cyan:#31E0C4;
  --violet:#8A7CFF;
  --ok:#2FBF71;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --text:#F2F0FA;
  --text-2:#B9B3D0;
  --text-3:#7E7896;
  --paper:#F7F5FB;
  --paper-text:#1E1A2E;
  --r-card:18px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh:0 18px 40px rgba(8,5,20,.55);
  --sh-hover:0 26px 54px rgba(8,5,20,.72);
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --cut:#0E0B1C;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover,a:focus{color:#fff}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,107,44,.35)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(14,11,28,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:0 12px 32px rgba(4,2,12,.6);
}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF8A4C,#FF6B2C 55%,#E85A1E);
  color:#fff;font-weight:800;font-size:20px;
  box-shadow:0 10px 24px rgba(255,107,44,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap}
.brand-text span{font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--text-3)}
.nav-wrap{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links li{position:relative}
.nav-links a{
  position:relative;display:block;padding:10px 12px;font-size:15px;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  background:transparent;border:1.5px solid var(--line);color:var(--text);
  cursor:pointer;align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:#fff}
.nav-mask{
  position:fixed;inset:0;background:rgba(6,4,14,.66);opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;z-index:88;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}
.drawer-cta{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 26px rgba(255,107,44,.22)}
.btn-primary:hover{background:var(--brand-h);color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px rgba(255,107,44,.4)}
.btn-primary:active{background:var(--brand-a);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;
  color:var(--cyan);border-bottom:2px solid rgba(49,224,196,.35);
  padding-bottom:3px;text-underline-offset:6px;
}
.btn-text:hover{color:#7DF3E1;border-color:var(--cyan)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-block{width:100%}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-alt)}
.section--deep{background:var(--bg-alt2)}
.section--grid{
  background-color:var(--bg-alt2);
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px;margin-bottom:40px}
.sec-head .sec-head-main{flex:1 1 420px;min-width:0}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700}
.sec-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);display:block}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#413A5E}
.breadcrumb .current{color:var(--text-2)}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,11,28,.97) 0%,rgba(14,11,28,.9) 46%,rgba(14,11,28,.66) 100%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:repeating-linear-gradient(90deg,rgba(49,224,196,.5) 0 12px,transparent 12px 24px);
  opacity:.5;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{align-items:flex-start}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.15;letter-spacing:-.01em;
  margin-bottom:18px;max-width:16em;
}
.hero-copy h1 em{font-style:normal;color:var(--brand)}
.hero-copy .lead{font-size:16.5px;color:var(--text-2);line-height:1.9;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-note{
  margin-top:20px;font-size:13px;color:var(--text-3);display:flex;align-items:flex-start;gap:8px;
}
.hero-note i{color:var(--cyan);margin-top:5px}

/* 自助卡 */
.help-card{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);padding:26px 26px 24px;
  overflow:hidden;--cut:#0E0B1C;
}
.help-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
}
.cut::after{
  content:"";position:absolute;top:-1px;right:-1px;width:16px;height:16px;
  background:var(--cut);clip-path:polygon(100% 0,0 0,100% 100%);
}
.help-card h3{font-size:17px;margin-bottom:6px}
.help-card .sub{font-size:13px;color:var(--text-3);margin-bottom:18px}
.help-list li{border-top:1px solid var(--divider);padding:13px 0}
.help-list li:first-child{border-top:0;padding-top:0}
.help-list a{display:flex;align-items:center;gap:11px;font-size:14.5px;color:var(--text-2)}
.help-list a:hover{color:#fff}
.help-list a i{color:var(--violet);width:18px;text-align:center;flex:0 0 auto}
.help-list a span{flex:1;min-width:0}
.help-list a .go{color:var(--text-3);font-size:12px}
.help-list a:hover .go{color:var(--brand)}

/* ============ 标签栏 ============ */
.tag-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;
  padding-bottom:22px;border-bottom:1px solid var(--divider);
}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:8px 16px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);background:rgba(255,255,255,.02);
  transition:.2s ease;
}
.tag:hover{border-color:var(--brand);color:#fff;background:rgba(255,107,44,.1)}
.tag.is-current{background:rgba(255,107,44,.14);border-color:rgba(255,107,44,.55);color:#FFD6BE}
.tag .count{font-family:var(--mono);font-size:11px;color:var(--text-3)}
.tag.is-current .count{color:#FFB58C}

/* ============ 卡片网格 ============ */
.card-grid{margin-left:-14px;margin-right:-14px}
.card-grid > .cell{padding-left:14px;padding-right:14px;margin-bottom:28px}
.topic-card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.topic-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,107,44,.5);
  box-shadow:0 0 0 2px rgba(255,107,44,.32),var(--sh-hover);
}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0b0917}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.topic-card:hover .thumb img{transform:scale(1.04)}
.thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,11,28,0) 45%,rgba(14,11,28,.82) 100%);
}
.thumb .tag-float{
  position:absolute;left:16px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:#fff;background:rgba(14,11,28,.72);
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-pill);padding:5px 12px;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{
  font-size:19px;font-weight:600;line-height:1.45;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.topic-card:hover .card-title{color:#fff}
.card-text{
  font-size:14px;color:var(--text-2);line-height:1.72;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-points{display:flex;flex-direction:column;gap:7px;margin-top:2px}
.card-points li{display:flex;gap:9px;font-size:13.5px;color:var(--text-3);line-height:1.6}
.card-points i{color:var(--cyan);font-size:11px;margin-top:6px}
.card-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-size:12.5px;color:var(--text-3);
}
.card-meta .read{color:var(--cyan)}
.topic-card:hover .card-meta .read{color:#7DF3E1}

/* ============ 排行榜 ============ */
.rank-panel{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:8px 26px 14px;position:relative;--cut:#1A1533;
}
.rank-list li{
  display:flex;align-items:center;gap:16px;padding:18px 0;
  border-bottom:1px solid var(--divider);
}
.rank-list li:last-child{border-bottom:0}
.rank-no{
  font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand);
  width:38px;flex:0 0 auto;letter-spacing:-.02em;
}
.rank-list li:nth-child(n+4) .rank-no{color:var(--text-3)}
.rank-main{flex:1;min-width:0}
.rank-main a{font-size:15.5px;color:var(--text);font-weight:600}
.rank-main a:hover{color:var(--brand)}
.rank-main p{font-size:13px;color:var(--text-3);margin:3px 0 0}
.rank-count{
  font-family:var(--mono);font-size:13px;color:var(--cyan);
  background:rgba(49,224,196,.1);border-radius:var(--r-pill);padding:5px 13px;flex:0 0 auto;
}
.side-note{
  background:var(--bg-alt2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;display:flex;flex-direction:column;gap:14px;
}
.side-note h3{font-size:16px}
.side-note p{font-size:14px;color:var(--text-2);line-height:1.8}
.side-note ul{display:flex;flex-direction:column;gap:10px;margin-top:2px}
.side-note ul li{display:flex;gap:10px;font-size:13.5px;color:var(--text-3)}
.side-note ul i{color:var(--brand);margin-top:6px;font-size:10px}

/* ============ 流程 ============ */
.flow{position:relative;margin-top:8px}
.flow::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:0;
  border-top:2px dashed rgba(49,224,196,.4);
}
.flow .cell{position:relative;z-index:2}
.flow-step{text-align:left}
.flow-dot{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-family:var(--mono);font-weight:700;font-size:17px;
  box-shadow:0 0 0 8px rgba(255,107,44,.12);
}
.flow-step h3{font-size:17px;margin:18px 0 8px}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 46px 20px 20px;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s ease,background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--brand);opacity:0;transition:opacity .2s ease;
  border-radius:2px;
}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  color:var(--text-3);transition:transform .22s ease,color .22s ease;
}
.faq-item[open] summary{color:#fff}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{content:"\f068";color:var(--brand)}
.faq-item summary:hover{color:#fff;background:rgba(255,255,255,.02)}
.faq-answer{padding:2px 46px 22px 20px;font-size:15px;color:var(--text-2);line-height:1.8}
.faq-answer p{margin-bottom:10px}

/* ============ CTA + 表单 ============ */
.cta-panel{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;--cut:#1A1533;
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand),var(--cyan));
}
.cta-left{padding:44px 40px}
.cta-left h2{font-size:clamp(24px,2.6vw,30px);margin-bottom:14px}
.cta-left p{color:var(--text-2);font-size:15px;max-width:32em}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:13px}
.check-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2)}
.check-list i{color:var(--ok);margin-top:6px;font-size:13px}
.form-card{
  background:var(--bg-alt2);border-left:1px solid var(--line);
  padding:40px;height:100%;
}
.form-row{margin-bottom:18px}
.field-label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field-label .req{color:var(--brand)}
.input,select.input,textarea.input{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:14px 16px;font-size:15px;color:var(--text);line-height:1.5;
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
textarea.input{min-height:118px;resize:vertical}
.input::placeholder{color:#5C5677}
.input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(255,107,44,.16);
  caret-color:var(--cyan);
}
select.input{
  background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),
                   linear-gradient(135deg,var(--text-3) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
  padding-right:42px;
}
.checkbox{display:flex;align-items:flex-start;gap:11px;font-size:13.5px;color:var(--text-2);cursor:pointer;line-height:1.6}
.checkbox input{position:absolute;opacity:0;pointer-events:none}
.checkbox .box{
  width:19px;height:19px;flex:0 0 auto;margin-top:2px;border-radius:5px;
  border:1.5px solid var(--line);background:var(--bg);position:relative;
  transition:border-color .2s ease,background-color .2s ease;
}
.checkbox input:checked + .box{background:var(--brand);border-color:var(--brand)}
.checkbox input:checked + .box::after{
  content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;
  border:2px solid #fff;border-top:0;border-left:0;transform:rotate(42deg);
}
.checkbox input:focus-visible + .box{outline:2px solid var(--cyan);outline-offset:2px}
.form-tip{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7}
.form-feedback{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(47,191,113,.12);border:1px solid rgba(47,191,113,.4);
  color:#8DE8B8;font-size:13.5px;
}
.form-feedback.is-visible{display:block}

/* ============ 徽章 / 状态点 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(138,124,255,.12);color:var(--violet);
  border-radius:var(--r-pill);padding:4px 12px;font-size:13px;line-height:1.6;
}
.status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.status .dot{width:6px;height:6px;border-radius:50%;flex:0 0 auto}
.status .dot.ok{background:var(--ok);box-shadow:0 0 0 4px rgba(47,191,113,.15)}
.status .dot.warn{background:var(--warn);box-shadow:0 0 0 4px rgba(255,176,32,.15)}
.status .dot.danger{background:var(--danger);box-shadow:0 0 0 4px rgba(255,77,79,.15)}

/* ============ 页脚 ============ */
.site-footer{background:#0B0916;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.9;max-width:34em}
.footer-col h4{font-size:14px;color:var(--text-2);margin-bottom:18px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--divider);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:inline-flex}
  .nav-wrap{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--bg-alt);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:82px 22px 28px;z-index:90;
    transform:translateX(102%);transition:transform .28s ease;
    overflow-y:auto;
  }
  body.nav-open .nav-wrap{transform:translateX(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-links a{padding:15px 8px;font-size:16px;border-bottom:1px solid var(--divider);min-height:44px;display:flex;align-items:center}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand)}
  .header-cta{display:none}
  .drawer-cta{display:inline-flex;margin-top:22px;width:100%}
  .hero-copy h1{max-width:none}
  .help-card{margin-top:34px}
  .flow::before{display:none}
  .cta-left{padding:36px 26px}
  .form-card{padding:32px 26px;border-left:0;border-top:1px solid var(--line)}
  .rank-panel{padding:6px 20px 10px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .page-hero{padding:44px 0 56px}
  .hero-actions .btn{width:100%}
  .sec-head{margin-bottom:28px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .rank-list li{gap:12px}
  .rank-count{display:none}
  .faq-item summary{font-size:15.5px;padding:17px 40px 17px 16px}
  .faq-answer{padding:0 20px 20px 16px}
  .flow-dot{width:46px;height:46px}
}
@media (max-width:520px){
  .brand-text b{font-size:13.5px}
  .btn{padding:12px 18px;width:100%}
  .hero-actions{gap:10px}
  .tag{padding:7px 13px;font-size:13px}
  .cta-left,.form-card{padding:28px 20px}
}