/* roulang page: index */
:root{
  --lime:#C8FF2E;
  --lime-deep:#A8DC15;
  --orange:#FF5A1F;
  --ink:#101214;
  --graphite:#4A4E4D;
  --mist:#8B8F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --line:#E3E2DC;
  --line-dark:rgba(255,255,255,.12);
  --r-xs:6px;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.05);
  --sh-2:0 12px 32px rgba(16,18,20,.10);
  --sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"DIN Alternate","Barlow Condensed","Roboto Mono",ui-monospace,monospace;
  --bs-body-font-family:var(--sans);
  --bs-body-color:var(--ink);
  --bs-border-radius:var(--r-md);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;font-family:var(--sans);font-size:16.5px;line-height:1.85;
  color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ink)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1140px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.wrap{max-width:1320px}}
@media(max-width:1199px){.wrap{max-width:960px}}
@media(max-width:991px){.wrap{max-width:720px}}
@media(max-width:767px){.wrap{max-width:100%;padding:0 20px}}

.band{padding:104px 0}
.band--tight{padding:80px 0}
.band--dark{background:var(--ink);color:#F1F0EB}
.band--white{background:var(--white)}
.band--paper{background:var(--paper)}
@media(max-width:991px){.band{padding:72px 0}.band--tight{padding:56px 0}}
@media(max-width:767px){.band{padding:52px 0}.band--tight{padding:44px 0}}

.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--mist);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block}
.band--dark .eyebrow{color:rgba(241,240,235,.6)}

.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.2;max-width:760px}
.section-head p{color:var(--graphite);max-width:620px;margin:10px 0 0}
.band--dark .section-head p{color:rgba(241,240,235,.72)}

/* 活动条 */
.announce{background:var(--ink);color:#F1F0EB;font-size:13.5px}
.announce-inner{display:flex;align-items:center;gap:16px;height:38px;min-height:38px}
.announce-text{color:rgba(241,240,235,.78);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.announce-count{font-family:var(--mono);font-size:15px;color:var(--orange);letter-spacing:.08em;font-weight:700}
.announce-link{margin-left:auto;color:#F1F0EB;font-size:13px;border-bottom:1px solid rgba(241,240,235,.4);padding-bottom:1px;white-space:nowrap;min-height:auto}
.announce-link:hover{color:var(--lime);border-color:var(--lime)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.06em;white-space:nowrap}
.tag--lime{background:var(--lime);color:var(--ink)}
.tag--orange{background:var(--orange);color:#fff}
.tag--mist{background:#E9E8E2;color:var(--graphite)}
.tag--line{border:1px solid var(--line);color:var(--graphite);background:transparent}
.band--dark .tag--mist{background:rgba(255,255,255,.1);color:rgba(241,240,235,.8)}
@media(max-width:767px){
  .announce-text{display:none}
  .announce-inner{gap:12px}
}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(246,245,241,.9);border-bottom:1px solid transparent;transition:border-color .25s ease,background-color .25s ease}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(246,245,241,.96)}
.nav-row{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:block;width:34px;height:34px;flex:0 0 34px}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{display:block;font-size:11px;font-weight:600;letter-spacing:.12em;color:var(--mist);line-height:1.3}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto;flex-wrap:nowrap}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;font-size:15px;font-weight:600;color:var(--graphite);border-radius:var(--r-pill)}
.nav-links a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .24s cubic-bezier(.2,.7,.2,1)}
.nav-links a:hover{color:var(--ink)}
.nav-links a.is-active{color:var(--ink)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-status{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--graphite);white-space:nowrap}
.nav-status i{width:8px;height:8px;border-radius:50%;background:var(--lime);display:block;box-shadow:0 0 0 3px rgba(200,255,46,.28)}
.btn-rl{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:background-color .22s cubic-bezier(.2,.7,.2,1),color .22s,transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s;background:none;text-decoration:none}
.btn-rl .arw{transition:transform .22s cubic-bezier(.2,.7,.2,1)}
.btn-rl:hover .arw{transform:translateX(4px)}
.btn-rl--primary{background:var(--ink);color:#fff}
.btn-rl--primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px)}
.btn-rl--lime{background:var(--lime);color:var(--ink)}
.btn-rl--lime:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-rl--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-rl--ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-rl--dark{background:var(--ink);color:#fff;border-color:rgba(255,255,255,.2)}
.btn-rl--dark:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px)}
.btn-rl--outline-light{background:transparent;border-color:rgba(241,240,235,.4);color:#F1F0EB}
.btn-rl--outline-light:hover{background:#F1F0EB;color:var(--ink);transform:translateY(-2px)}
.btn-rl--sm{height:40px;padding:0 18px;font-size:14px}
.btn-rl--block{width:100%}

.drawer-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--white);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;padding:0}
.drawer-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .22s ease}
.drawer-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.drawer-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.rl-drawer{background:var(--paper);width:min(88vw,420px);border-left:1px solid var(--line)}
.rl-drawer .offcanvas-body{padding:24px 24px 28px;display:flex;flex-direction:column;gap:6px}
.rl-drawer .drawer-label{font-size:12px;letter-spacing:.14em;color:var(--mist);font-weight:700;margin:16px 0 6px}
.rl-drawer a.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;font-size:19px;font-weight:700;border-bottom:1px solid var(--line);color:var(--ink)}
.rl-drawer a.drawer-link small{font-size:12px;font-weight:600;color:var(--mist);letter-spacing:.06em}
.rl-drawer a.drawer-link.is-active{color:var(--ink)}
.rl-drawer a.drawer-link.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:10px;display:inline-block}
.rl-drawer .drawer-cta{margin-top:auto;padding-top:24px}
@media(max-width:991px){
  .nav-links,.nav-actions .nav-status,.nav-actions .btn-rl{display:none}
  .drawer-toggle{display:inline-flex}
  .brand-sub{display:none}
}

/* Hero */
.hero{position:relative;overflow:hidden;padding:76px 0 64px;background:var(--paper)}
.hero::before{content:"";position:absolute;top:-40px;right:-80px;width:460px;height:460px;background-image:radial-gradient(rgba(16,18,20,.18) 1.4px,transparent 1.4px);background-size:16px 16px;-webkit-mask-image:linear-gradient(145deg,#000,transparent 70%);mask-image:linear-gradient(145deg,#000,transparent 70%);pointer-events:none;animation:dotsFloat 18s linear infinite}
@keyframes dotsFloat{from{transform:translate3d(0,0,0)}to{transform:translate3d(-16px,-16px,0)}}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:52px;align-items:center}
.hero h1{font-size:clamp(2rem,4.8vw,3.5rem);font-weight:800;line-height:1.1;letter-spacing:-.02em;margin:18px 0 20px}
.hero h1 mark{background:none;color:var(--ink);box-shadow:inset 0 -0.28em 0 var(--lime);padding:0 .04em}
.hero-sub{font-size:17.5px;color:var(--graphite);max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:22px}
.hero-stats li{flex:1 1 0;min-width:132px;padding:0 18px;border-left:1px solid var(--line)}
.hero-stats li:first-child{border-left:0;padding-left:0}
.hero-stats .num{display:block;font-family:var(--mono);font-size:27px;font-weight:700;line-height:1.1;color:var(--ink)}
.hero-stats .num em{font-style:normal;font-size:14px;color:var(--graphite);margin-left:3px}
.hero-stats .lbl{display:block;font-size:12.5px;color:var(--mist);letter-spacing:.06em;margin-top:6px}
.hero-visual{position:relative;margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);background:var(--ink)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:auto 0 0 0;height:46%;background:linear-gradient(180deg,rgba(16,18,20,0),rgba(16,18,20,.66))}
.hero-chip{position:absolute;left:18px;right:18px;bottom:18px;z-index:2;display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:#F1F0EB;font-size:13px}
.hero-chip .k{font-family:var(--mono);font-size:19px;color:var(--lime);font-weight:700}
.hero-visual .scan{position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--lime),transparent);opacity:.6;animation:scanMove 6.5s cubic-bezier(.4,0,.6,1) infinite}
@keyframes scanMove{0%{transform:translateY(0);opacity:0}12%{opacity:.7}100%{transform:translateY(360px);opacity:0}}
@media(max-width:991px){
  .hero{padding:52px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-sub{max-width:100%}
  .hero-cta{margin-bottom:32px}
}
@media(max-width:560px){
  .hero-stats li{flex:1 1 45%;border-left:0;padding:0 0 14px;border-bottom:1px solid var(--line);min-width:0}
  .hero-stats li:last-child{border-bottom:0}
  .hero-cta .btn-rl{width:100%}
}

/* 卖点 */
.selling-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 56px}
.selling-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:22px;padding:30px 0;border-top:1px solid var(--line)}
.selling-item:nth-child(even){transform:translateY(34px)}
.selling-num{font-family:var(--mono);font-size:clamp(2.4rem,4vw,3.2rem);font-weight:700;line-height:1;color:var(--ink);letter-spacing:-.03em}
.selling-item:hover .selling-num{color:var(--lime-deep)}
.selling-body h3{font-size:clamp(1.05rem,1.6vw,1.3rem);font-weight:700;margin-bottom:10px}
.selling-body p{color:var(--graphite);font-size:15.6px;max-width:520px}
.link-lime{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14.5px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:2px}
.link-lime:hover{color:var(--lime-deep)}
.link-lime .arw{transition:transform .22s cubic-bezier(.2,.7,.2,1)}
.link-lime:hover .arw{transform:translateX(4px)}
@media(max-width:991px){
  .selling-list{grid-template-columns:1fr;gap:0}
  .selling-item:nth-child(even){transform:none}
  .selling-item{padding:24px 0}
}

/* 演示（深色） */
.demo-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.demo-intro h2{font-size:clamp(1.5rem,2.8vw,2.2rem);color:#F1F0EB;margin:16px 0 16px}
.demo-intro p{color:rgba(241,240,235,.72);font-size:15.6px}
.demo-points{margin-top:26px;display:grid;gap:12px}
.demo-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(241,240,235,.85)}
.demo-points li::before{content:"";width:6px;height:6px;margin-top:10px;flex:0 0 6px;background:var(--lime);border-radius:1px;transform:rotate(45deg)}
.demo-panel{border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:22px;background:rgba(255,255,255,.03)}
.demo-pills{border:0;gap:10px;margin-bottom:20px;flex-wrap:wrap}
.demo-pills .nav-link{border:1px solid rgba(241,240,235,.28);color:rgba(241,240,235,.78);border-radius:var(--r-pill);font-size:14px;font-weight:700;padding:9px 20px;min-height:44px;display:inline-flex;align-items:center;transition:.22s}
.demo-pills .nav-link:hover{border-color:var(--lime);color:var(--lime)}
.demo-pills .nav-link.active{background:transparent;border-color:var(--lime);color:var(--lime);box-shadow:inset 0 0 0 1px rgba(200,255,46,.25)}
.demo-pane figure{margin:0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line-dark)}
.demo-pane img{width:100%;aspect-ratio:16/9;object-fit:cover}
.demo-pane .pane-note{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:16px;font-size:13.5px;color:rgba(241,240,235,.7)}
.demo-pane .pane-note b{color:var(--lime);font-family:var(--mono);font-size:14px;font-weight:700}
@media(max-width:991px){
  .demo-grid{grid-template-columns:1fr;gap:28px}
}

/* 证据 */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-strip li{padding:26px 22px;border-left:1px solid var(--line)}
.stat-strip li:first-child{border-left:0;padding-left:0}
.stat-strip .num{display:block;font-family:var(--mono);font-size:clamp(1.7rem,3vw,2.3rem);font-weight:700;line-height:1.1}
.stat-strip .num em{font-style:normal;font-size:15px;color:var(--orange);margin-left:4px}
.stat-strip .lbl{display:block;font-size:13px;color:var(--mist);margin-top:8px;letter-spacing:.04em}
.sched-wrap{margin-top:52px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.sched-table{width:100%;min-width:560px;border-collapse:collapse;font-size:14.5px}
.sched-table th{text-align:left;font-size:12px;letter-spacing:.08em;color:var(--mist);font-weight:700;padding:0 16px 12px 0;border-bottom:1px solid var(--line);white-space:nowrap}
.sched-table td{padding:16px 16px 16px 0;border-bottom:1px solid var(--line);color:var(--graphite);vertical-align:middle}
.sched-table td:first-child{color:var(--ink);font-weight:700}
.sched-table .mono{font-family:var(--mono);color:var(--ink)}
.quote-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:56px}
.quote{border-left:3px solid var(--lime);padding:6px 0 6px 22px}
.quote p{font-size:16.5px;color:var(--ink);line-height:1.8}
.quote footer{margin-top:14px;font-size:13px;color:var(--mist);letter-spacing:.04em}
.logo-strip{display:flex;flex-wrap:wrap;gap:14px 38px;align-items:center;margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.logo-strip span{font-size:14px;font-weight:700;letter-spacing:.1em;color:var(--mist);filter:grayscale(1);transition:color .2s,filter .2s}
.logo-strip span:hover{color:var(--ink);filter:none}
@media(max-width:991px){
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip li{padding:20px 16px}
  .stat-strip li:nth-child(odd){border-left:0;padding-left:0}
  .stat-strip li:nth-child(n+3){border-top:1px solid var(--line)}
  .quote-row{grid-template-columns:1fr;gap:22px}
}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.price-card{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:34px 30px;display:flex;flex-direction:column;transition:transform .24s cubic-bezier(.2,.7,.2,1),border-color .24s,box-shadow .24s}
.price-card:hover{transform:translateY(-3px);border-color:var(--lime);box-shadow:var(--sh-2)}
.price-card.is-featured{border-color:var(--ink);background:var(--ink);color:#F1F0EB}
.price-card.is-featured:hover{border-color:var(--lime)}
.price-card.is-featured .price-desc,.price-card.is-featured .price-list li{color:rgba(241,240,235,.78)}
.price-card.is-featured .price-list li::before{background:var(--lime)}
.price-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.price-name{font-size:clamp(1.05rem,1.6vw,1.3rem);font-weight:700}
.price-amount{font-family:var(--mono);font-size:clamp(2rem,3.2vw,2.6rem);font-weight:700;line-height:1.05;letter-spacing:-.02em}
.price-amount em{font-style:normal;font-size:15px;font-family:var(--sans);font-weight:600;color:var(--mist);margin-left:6px}
.price-card.is-featured .price-amount em{color:rgba(241,240,235,.6)}
.price-desc{color:var(--graphite);font-size:14.6px;margin:12px 0 22px}
.price-list{display:grid;gap:11px;margin-bottom:28px}
.price-list li{position:relative;padding-left:20px;font-size:15px;color:var(--graphite)}
.price-list li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:2px;background:var(--ink)}
.price-card .btn-rl{margin-top:auto}
.corner-badge{position:absolute;top:-13px;left:30px;background:var(--lime);color:var(--ink);font-size:12px;font-weight:800;letter-spacing:.08em;padding:5px 14px;border-radius:var(--r-pill)}
@media(max-width:991px){.price-grid{grid-template-columns:1fr}}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:transform .24s cubic-bezier(.2,.7,.2,1),border-color .24s,box-shadow .24s}
.news-card:hover{transform:translateY(-3px);border-color:var(--lime);box-shadow:var(--sh-2)}
.news-thumb{display:block;background:var(--ink);position:relative}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:1.02rem;font-weight:700;line-height:1.5}
.news-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--lime-deep)}
.news-excerpt{font-size:14.4px;color:var(--graphite);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--mist)}
.news-meta time{font-family:var(--mono);letter-spacing:.04em}
.news-more{font-weight:700;color:var(--ink)}
.news-empty{text-align:center;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-md);background:var(--white)}
.news-empty .dot-grid{width:56px;height:56px;margin:0 auto 18px;background-image:radial-gradient(var(--mist) 1.6px,transparent 1.6px);background-size:11px 11px;opacity:.6}
.news-empty p{color:var(--graphite);margin-bottom:18px}
@media(max-width:991px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.news-grid{grid-template-columns:1fr}}

/* FAQ */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{width:100%;display:flex;align-items:flex-start;gap:18px;background:none;border:0;padding:26px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;position:relative}
.faq-btn::before{content:"";position:absolute;left:-16px;top:26px;bottom:26px;width:3px;background:var(--lime);opacity:0;transition:opacity .22s ease}
.faq-btn[aria-expanded="true"]::before{opacity:1}
.faq-idx{font-family:var(--mono);font-size:14px;color:var(--mist);padding-top:5px;flex:0 0 30px}
.faq-q{flex:1 1 auto}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;margin-top:6px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .25s cubic-bezier(.2,.7,.2,1),opacity .25s,background-color .25s}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-btn[aria-expanded="true"] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-btn[aria-expanded="true"] .faq-icon::before{background:var(--orange)}
.faq-answer{padding:0 40px 26px 48px;color:var(--graphite);font-size:15.6px;max-width:800px}
@media(max-width:767px){
  .faq-btn{font-size:16px;padding:22px 0}
  .faq-answer{padding:0 0 22px 48px}
}

/* CTA */
.cta-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:56px;align-items:center}
.cta-grid h2{font-size:clamp(1.5rem,2.8vw,2.2rem);color:#F1F0EB;margin:16px 0 14px}
.cta-grid p{color:rgba(241,240,235,.75);font-size:15.8px}
.cta-form{background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:700;letter-spacing:.06em;color:rgba(241,240,235,.72);margin-bottom:8px}
.field input,.field textarea{width:100%;min-height:48px;padding:12px 16px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#F1F0EB;font-size:15px;font-family:inherit;transition:border-color .2s,box-shadow .2s,background-color .2s}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(241,240,235,.42)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--lime);background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(200,255,46,.18)}
.form-note{font-size:12.6px;color:rgba(241,240,235,.55);margin-top:14px}
.cta-visual{margin:22px 0 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line-dark)}
.cta-visual img{width:100%;aspect-ratio:16/7;object-fit:cover}
@media(max-width:991px){.cta-grid{grid-template-columns:1fr;gap:32px}}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(241,240,235,.72);padding:72px 0 0;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.site-footer h4{font-size:13px;letter-spacing:.14em;color:rgba(241,240,235,.55);font-weight:700;margin-bottom:18px}
.footer-brand .brand-text{color:#F1F0EB}
.footer-brand p{font-size:14.4px;margin-top:16px;max-width:320px;color:rgba(241,240,235,.65)}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14.6px;color:rgba(241,240,235,.78);min-height:24px;display:inline-flex;align-items:center}
.footer-links a:hover{color:var(--lime)}
.footer-contact{display:grid;gap:11px;font-size:14.6px}
.footer-contact span{color:rgba(241,240,235,.55);font-size:12.5px;letter-spacing:.06em;display:block}
.footer-bottom{border-top:1px solid var(--line-dark);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:rgba(241,240,235,.5)}
.footer-social{display:flex;gap:18px}
.footer-social a{color:rgba(241,240,235,.6);font-size:13px;border-bottom:1px solid transparent}
.footer-social a:hover{color:var(--lime);border-color:var(--lime)}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding-top:52px}}

/* 浮动 CTA */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:1040;display:flex;align-items:center;gap:12px;background:var(--ink);color:#F1F0EB;border-radius:var(--r-pill);padding:10px 12px 10px 18px;box-shadow:0 12px 32px rgba(16,18,20,.24);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .3s ease,transform .3s cubic-bezier(.2,.7,.2,1)}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta .float-tag{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--lime);white-space:nowrap}
.float-cta .btn-rl{height:40px;padding:0 18px;font-size:14px}
.float-cta .float-bar{position:absolute;left:18px;right:18px;bottom:5px;height:2px;border-radius:2px;background:rgba(255,255,255,.16);overflow:hidden}
.float-cta .float-bar i{display:block;height:100%;width:0;background:var(--lime);transition:width .12s linear}
@media(max-width:991px){
  .float-cta{left:0;right:0;bottom:0;border-radius:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));justify-content:space-between;height:60px;gap:10px}
  .float-cta .float-bar{display:none}
  .float-cta .btn-rl{height:40px}
  body{padding-bottom:76px}
}

/* 滚动进入 */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1)}
.js .reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero::before,.hero-visual .scan{animation:none}
  .btn-rl:hover,.price-card:hover,.news-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink:#101214;
  --graphite:#4A4E4D;
  --mist:#8B8F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --line:#E3E2DC;
  --lime:#C8FF2E;
  --lime-deep:#9FD600;
  --orange:#FF5A1F;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --pill:999px;
  --sh1:0 1px 2px rgba(16,18,20,.05);
  --sh2:0 12px 32px rgba(16,18,20,.10);
  --sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"DIN Alternate","Barlow Condensed","Roboto Mono",ui-monospace,monospace;
  --bs-body-font-family:var(--sans);
  --bs-body-color:var(--ink);
  --bs-body-bg:var(--paper);
  --bs-border-color:var(--line);
  --bs-link-color:var(--ink);
  --bs-link-hover-color:var(--ink);
  --bs-border-radius:var(--r-md);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--ink)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:var(--r-xs)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.35em}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1320px;margin-inline:auto;padding-inline:24px}
@media (max-width:1199.98px){.container{max-width:960px}}
@media (max-width:991.98px){.container{max-width:720px;padding-inline:20px}}
@media (max-width:767.98px){.container{max-width:100%;padding-inline:20px}}
section{scroll-margin-top:110px}

/* ---------- 顶部活动条 ---------- */
.announce{background:var(--ink);color:var(--paper);min-height:40px;display:flex;align-items:center;position:relative;z-index:60}
.announce-inner{display:flex;align-items:center;gap:16px;min-height:40px;font-size:13px;letter-spacing:.03em}
.announce-text{color:rgba(246,245,241,.78);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.announce-link{color:var(--lime);border-bottom:1px solid rgba(200,255,46,.4);padding-bottom:1px;font-weight:600;white-space:nowrap}
.announce-link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.badge-status{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--pill);background:var(--lime);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.06em;white-space:nowrap}
.countdown{font-family:var(--mono);font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--orange);white-space:nowrap}
@media (max-width:767.98px){
  .announce-text,.announce-link{display:none}
  .announce-inner{justify-content:space-between}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(246,245,241,.94);border-bottom-color:var(--line);box-shadow:var(--sh1)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--ink);display:grid;place-items:center;flex-shrink:0}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-words{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-size:18px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:10.5px;letter-spacing:.22em;color:var(--mist);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:12px}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--graphite);
  padding:6px 0;line-height:1.4;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform .25s cubic-bezier(.2,.7,.2,1);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink)}
.nav-links a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--pill);font-size:12px;font-weight:600;letter-spacing:.06em;white-space:nowrap}
.tag-live{background:var(--lime);color:var(--ink)}
.tag-info{background:#EDECE6;color:var(--graphite)}
.tag-warn{background:var(--orange);color:#fff}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ink);display:inline-block}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--pill);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn .arrow{transition:transform .22s ease;font-family:var(--mono)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-solid:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-lime:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;border:0;height:auto;padding:4px 0;color:var(--ink);border-bottom:1px solid var(--ink);border-radius:0}
.btn-ghost:hover{color:var(--lime-deep);border-bottom-color:var(--lime)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);
  border-radius:var(--r-sm);flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
@media (max-width:1199.98px){
  .nav-links{gap:18px}
  .nav-links a{font-size:14px}
}
@media (max-width:991.98px){
  .nav-links,.header-actions .tag{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:60px}
}
.offcanvas{background:var(--paper);border:0}
.offcanvas-header{padding:20px 20px 12px;border-bottom:1px solid var(--line)}
.offcanvas-body{padding:20px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:28px}
.drawer-nav a{
  font-size:20px;font-weight:800;padding:14px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--lime);margin-right:10px;vertical-align:middle}
.drawer-foot{display:grid;gap:12px}
.btn-close{--bs-btn-close-focus-shadow:0 0 0 2px var(--lime)}

/* ---------- 文章头部 ---------- */
.article-hero{padding:44px 0 8px;background:
  radial-gradient(circle at 88% 12%,rgba(200,255,46,.30),transparent 46%),
  linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
  border-bottom:1px solid var(--line);}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--mist);margin-bottom:24px}
.crumbs a{color:var(--mist)}
.crumbs a:hover{color:var(--lime-deep)}
.crumbs .sep{color:#C9C8C1;font-family:var(--mono)}
.crumbs .current{color:var(--ink);font-weight:700}
.article-hero h1{font-size:clamp(1.7rem,3.6vw,2.9rem);max-width:900px;margin:16px 0 18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--mist);letter-spacing:.04em;padding-bottom:32px}
.article-meta .mono{color:var(--graphite);font-size:13.5px}
.article-meta .key{color:var(--mist);margin-right:6px}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 88px}
.article-grid{display:grid;gap:48px;grid-template-columns:minmax(0,1fr);justify-content:center}
.article-grid > .article-body{max-width:760px;margin-inline:auto;width:100%}
.article-aside{display:none}
@media (min-width:1200px){
  .article-grid{grid-template-columns:minmax(0,760px) 296px;justify-content:center;gap:56px}
  .article-aside{display:block}
  .aside-sticky{position:sticky;top:104px;display:grid;gap:18px}
}
.aside-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh1)}
.aside-card h3{font-size:15px;margin-bottom:14px;letter-spacing:.02em}
.aside-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.aside-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;color:var(--graphite);padding:9px 0;border-bottom:1px dashed var(--line)}
.aside-list li:last-child a{border-bottom:0}
.aside-list a:hover{color:var(--ink)}
.aside-list a span.arrow{font-family:var(--mono);color:var(--mist);transition:transform .22s ease}
.aside-list a:hover span.arrow{transform:translateX(4px);color:var(--lime-deep)}
.aside-note{font-size:13.5px;color:var(--graphite);line-height:1.75;margin-bottom:16px}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.85;color:#1B1E1D}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:clamp(1.35rem,2.2vw,1.7rem);margin:44px 0 16px;padding-left:0}
.article-body h2::before{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--lime);margin-bottom:14px}
.article-body h3{font-size:clamp(1.08rem,1.6vw,1.24rem);margin:30px 0 12px}
.article-body p{margin:0 0 1.1em}
.article-body a{color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:1px}
.article-body a:hover{color:var(--lime-deep);border-bottom-color:var(--lime)}
.article-body ul,.article-body ol{padding-left:1.3em}
.article-body li{margin-bottom:.5em}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:#F0EFE8;border-left:3px solid var(--lime);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--graphite);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:24px auto;box-shadow:var(--sh1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--mist);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:#F0EFE8;font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
@media (max-width:767.98px){
  .article-body{font-size:16px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
.empty-state{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:48px 30px;text-align:center;box-shadow:var(--sh1)}
.empty-state h2{font-size:1.4rem;margin-bottom:12px}
.empty-state h2::before{display:none}
.empty-state p{color:var(--graphite);max-width:520px;margin:0 auto 22px;font-size:15.5px}

/* ---------- 标签 ---------- */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:40px 0 0;padding-top:26px;border-top:1px solid var(--line);max-width:760px;margin-inline:auto}
.article-tags .label{font-size:13px;color:var(--mist);letter-spacing:.06em;margin-right:4px}
.tag-pill{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--pill);background:var(--white);border:1px solid var(--line);font-size:13px;color:var(--graphite);transition:border-color .2s ease,color .2s ease,transform .2s ease}
.tag-pill:hover{border-color:var(--lime);color:var(--ink);transform:translateY(-2px)}

/* ---------- 相关推荐 ---------- */
.related{padding:20px 0 88px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.related-head h2{font-size:clamp(1.4rem,2.4vw,1.9rem)}
.related-head p{margin:8px 0 0;color:var(--graphite);font-size:15px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:var(--lime);box-shadow:var(--sh2)}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#EDECE6}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .body{padding:22px 24px 20px;display:flex;flex-direction:column;flex:1}
.post-card h3{font-size:1.02rem;line-height:1.45;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:14.5px;color:var(--graphite);line-height:1.75;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card .metaline{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--mist);letter-spacing:.05em;border-top:1px solid var(--line);padding-top:14px}
.post-card .metaline .go{font-family:var(--mono);transition:transform .22s ease}
.post-card:hover .metaline .go{transform:translateX(4px);color:var(--lime-deep)}
@media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.card-grid{grid-template-columns:1fr}}
.back-line{margin-top:30px;font-size:14.5px}

/* ---------- CTA ---------- */
.cta{
  position:relative;background:var(--ink);color:var(--paper);
  padding:88px 0;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.16;filter:grayscale(.4);
}
.cta::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(200,255,46,.30) 1px,transparent 1px);
  background-size:22px 22px;opacity:.28;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.cta h2{font-size:clamp(1.6rem,2.9vw,2.3rem);color:#fff;margin-bottom:16px}
.cta p{color:rgba(246,245,241,.76);font-size:16px;max-width:520px}
.cta-points{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px;font-size:14.5px;color:rgba(246,245,241,.86)}
.cta-points li{display:flex;gap:10px;align-items:flex-start}
.cta-points li::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--lime);flex-shrink:0;margin-top:9px}
.form-panel{background:#191C1E;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh2)}
.form-panel h3{color:#fff;font-size:1.12rem;margin-bottom:6px}
.form-panel .hint{font-size:13.5px;color:rgba(246,245,241,.6);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;letter-spacing:.05em;color:rgba(246,245,241,.72);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:#101214;border:1px solid rgba(255,255,255,.16);color:#fff;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 16px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(246,245,241,.38)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,255,46,.18)}
.form-panel .btn{width:100%;margin-top:6px}
.form-note{font-size:12.5px;color:rgba(246,245,241,.5);margin:14px 0 0;line-height:1.7}
.form-ok{display:none;margin-top:14px;font-size:14px;color:var(--lime)}
.form-ok.show{display:block}
@media (max-width:991.98px){
  .cta{padding:64px 0}
  .cta-inner{grid-template-columns:1fr;gap:34px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(246,245,241,.74);padding:66px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:46px}
.site-footer .brand-name{color:#fff;font-size:19px}
.site-footer .brand-sub{color:rgba(246,245,241,.45)}
.site-footer .brand-mark{background:var(--lime)}
.site-footer .brand-mark svg path{stroke:var(--ink)}
.footer-desc{font-size:14px;line-height:1.8;margin:18px 0 0;max-width:320px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.08em;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(246,245,241,.72);transition:color .2s ease}
.footer-col a:hover{color:var(--lime)}
.footer-contact li{font-size:14.5px;color:rgba(246,245,241,.72)}
.footer-contact .mono{color:rgba(246,245,241,.9)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(246,245,241,.52);
}
.footer-bottom a{color:rgba(246,245,241,.62)}
.footer-bottom a:hover{color:var(--lime)}
.social{display:flex;gap:14px}
.social a{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.16);border-radius:50%;color:rgba(246,245,241,.7)}
.social a:hover{border-color:var(--lime);color:var(--lime)}
@media (max-width:991.98px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;gap:30px}}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:flex;align-items:center;gap:14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--pill);
  padding:10px 12px 10px 18px;box-shadow:var(--sh2);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-progress{position:absolute;left:18px;right:18px;bottom:5px;height:2px;background:var(--line);border-radius:2px;overflow:hidden}
.float-progress i{display:block;height:100%;width:0;background:var(--lime);transition:width .1s linear}
@media (max-width:991.98px){
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;border:0;border-top:1px solid var(--line);
    padding:9px 20px calc(9px + env(safe-area-inset-bottom));justify-content:space-between;
    background:rgba(246,245,241,.97);transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0)}
  .float-progress{display:none}
  body{padding-bottom:78px}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#101214;
  --graphite:#4A4E4D;
  --fog:#8B8F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --line:#E3E2DC;
  --line-dark:rgba(255,255,255,.12);
  --lime:#C8FF2E;
  --lime-deep:#A6DB12;
  --orange:#FF5A1F;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.05);
  --sh-2:0 12px 32px rgba(16,18,20,.10);
  --sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"DIN Alternate","Barlow Condensed","Roboto Mono",ui-monospace,monospace;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  padding-bottom:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

/* 容器 */
.wrap{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
@media (max-width:1399px){.wrap{max-width:1140px;}}
@media (max-width:1199px){.wrap{max-width:960px;}}
@media (max-width:991px){.wrap{max-width:720px;}}
@media (max-width:767px){.wrap{max-width:100%;padding:0 20px;}}

/* 通用 */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--graphite);
  text-transform:uppercase;font-family:var(--mono);
}
.eyebrow i{width:22px;height:2px;background:var(--lime);display:inline-block;border-radius:2px;}
.sec{padding:110px 0;}
@media (max-width:991px){.sec{padding:76px 0;}}
@media (max-width:767px){.sec{padding:54px 0;}}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.25;letter-spacing:-.01em;margin-top:14px;}
.sec-head p{margin-top:14px;color:var(--graphite);font-size:16px;}
.dot-grid{
  background-image:radial-gradient(rgba(16,18,20,.16) 1px,transparent 1px);
  background-size:14px 14px;
}

/* 活动条 */
.announce{background:var(--ink);color:var(--paper);height:40px;display:flex;align-items:center;font-size:13px;}
.announce .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.announce-left{display:flex;align-items:center;gap:12px;min-width:0;}
.announce-badge{background:var(--lime);color:var(--ink);font-weight:700;font-size:12px;letter-spacing:.06em;padding:3px 10px;border-radius:var(--r-pill);white-space:nowrap;}
.announce-text{color:rgba(246,245,241,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.announce-right{display:flex;align-items:center;gap:18px;white-space:nowrap;}
.clock{font-family:var(--mono);color:var(--orange);font-weight:700;letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.announce-link{color:var(--paper);border-bottom:1px solid rgba(246,245,241,.35);padding-bottom:1px;transition:.2s;}
.announce-link:hover{color:var(--lime);border-color:var(--lime);}
@media (max-width:767px){
  .announce-text,.announce-right .announce-link{display:none;}
  .announce .wrap{justify-content:space-between;}
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,245,241,.92);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(16,18,20,.05);}
.header-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.brand-mark::before{
  content:"";position:absolute;left:7px;right:7px;height:6px;top:12px;
  border-left:3px solid var(--lime);border-bottom:3px solid var(--lime);
  transform:skewX(-16deg);
}
.brand-mark::after{
  content:"";position:absolute;right:7px;bottom:9px;width:12px;height:12px;
  background-image:radial-gradient(var(--lime) 1.1px,transparent 1.1px);
  background-size:5px 5px;opacity:.9;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-weight:800;font-size:17px;letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--fog);letter-spacing:.14em;font-family:var(--mono);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  position:relative;padding:8px 12px;font-size:15px;color:var(--graphite);
  border-radius:var(--r-xs);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--lime);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.06em;
  color:var(--graphite);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 13px;background:var(--white);
}
.status-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--lime-deep);box-shadow:0 0 0 3px rgba(200,255,46,.28);}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--ink);color:var(--white);font-weight:700;font-size:15px;
  border:1px solid var(--ink);cursor:pointer;transition:transform .2s ease,background .2s ease,color .2s ease;
}
.btn-main:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);}
.btn-main .arw{transition:transform .2s ease;}
.btn-main:hover .arw{transform:translateX(4px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;
  color:var(--ink);font-weight:700;font-size:15px;cursor:pointer;transition:.2s ease;
}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--white);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s;}
@media (max-width:991px){
  .nav-links,.header-right .status-pill,.header-right .btn-main{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{gap:12px;}
}

/* 抽屉 */
.offcanvas.drawwer{background:var(--paper);width:min(86vw,360px);border-left:1px solid var(--line);}
.drawwer .offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line);}
.drawwer .offcanvas-body{padding:22px;display:flex;flex-direction:column;gap:6px;}
.draw-link{
  display:flex;align-items:center;justify-content:space-between;
  font-size:19px;font-weight:700;padding:16px 4px;border-bottom:1px solid var(--line);
}
.draw-link.is-active{color:var(--ink);}
.draw-link.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime);margin-right:10px;}
.draw-link span{display:flex;align-items:center;}
.draw-link em{font-style:normal;font-size:12px;color:var(--fog);font-family:var(--mono);letter-spacing:.08em;}
.draw-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
.btn-close-x{border:1px solid var(--line);background:transparent;border-radius:var(--r-sm);width:40px;height:40px;line-height:1;font-size:18px;color:var(--graphite);}

/* Hero（小号） */
.hero{
  position:relative;overflow:hidden;color:var(--paper);
  background-image:linear-gradient(115deg,rgba(16,18,20,.94) 0%,rgba(16,18,20,.86) 46%,rgba(16,18,20,.62) 100%),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(200,255,46,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
  animation:dotShift 26s linear infinite;
}
@keyframes dotShift{from{background-position:0 0;}to{background-position:220px 220px;}}
.hero-inner{position:relative;z-index:2;padding:78px 0 66px;max-width:820px;}
.hero .eyebrow{color:rgba(246,245,241,.72);}
.hero .eyebrow i{background:var(--lime);}
.hero h1{
  font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin-top:18px;color:var(--white);
}
.hero h1 mark{background:none;color:var(--lime);}
.hero-sub{margin-top:20px;font-size:17px;color:rgba(246,245,241,.82);max-width:640px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero .btn-main{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.hero .btn-main:hover{background:var(--white);border-color:var(--white);}
.hero .btn-ghost{color:var(--paper);border-color:var(--line-dark);}
.hero .btn-ghost:hover{border-color:var(--lime);color:var(--lime);}
.stat-row{
  position:relative;z-index:2;margin-top:56px;display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line-dark);
}
.stat-item{padding:22px 24px 4px 0;position:relative;}
.stat-item + .stat-item{padding-left:24px;border-left:1px solid var(--line-dark);}
.stat-num{font-family:var(--mono);font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;color:var(--lime);letter-spacing:.02em;line-height:1.1;}
.stat-num em{font-style:normal;font-size:.55em;color:rgba(246,245,241,.7);margin-left:4px;letter-spacing:.04em;}
.stat-label{margin-top:8px;font-size:12px;letter-spacing:.08em;color:rgba(246,245,241,.62);}
@media (max-width:767px){
  .hero-inner{padding:52px 0 44px;}
  .stat-row{grid-template-columns:1fr;margin-top:36px;}
  .stat-item{padding:16px 0;border-left:0 !important;padding-left:0 !important;}
  .stat-item + .stat-item{border-top:1px solid var(--line-dark);}
}

/* 面包屑 */
.crumb{font-size:13px;color:var(--fog);padding-top:20px;}
.crumb a{color:var(--fog);transition:color .2s;}
.crumb a:hover{color:var(--ink);}
.crumb span.sep{margin:0 8px;color:#C6C5BF;}
.crumb strong{color:var(--ink);font-weight:700;}

/* 筛选胶囊 */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin:0 0 34px;padding-bottom:2px;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--white);color:var(--graphite);
  font-size:14px;font-weight:600;cursor:pointer;transition:.22s ease;
}
.chip em{font-style:normal;font-family:var(--mono);font-size:12px;color:var(--fog);}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px);}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:var(--white);}
.chip.is-on em{color:var(--lime);}
.filter-hint{margin-left:auto;font-size:13px;color:var(--fog);font-family:var(--mono);letter-spacing:.06em;}
@media (max-width:767px){.filter-hint{display:none;}}

/* 卡片栅格 */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
@media (max-width:767px){.card-grid{grid-template-columns:1fr;gap:18px;}}
.device-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.device-card:hover{transform:translateY(-3px);border-color:var(--lime);box-shadow:var(--sh-2);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDEBE4;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.device-card:hover .card-media img{transform:scale(1.04);}
.card-tag{
  position:absolute;left:14px;top:14px;background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;padding:4px 12px;border-radius:var(--r-pill);
}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:clamp(1.05rem,1.6vw,1.25rem);font-weight:700;line-height:1.4;}
.card-body p{margin-top:12px;color:var(--graphite);font-size:15px;line-height:1.8;}
.card-spec{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.spec{
  font-size:12px;letter-spacing:.04em;color:var(--graphite);
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 11px;
}
.card-meta{
  margin-top:auto;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--fog);font-family:var(--mono);letter-spacing:.05em;
}
.card-meta .go{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-family:var(--sans);font-weight:700;letter-spacing:0;font-size:14px;}
.card-meta .go i{transition:transform .2s ease;font-style:normal;}
.device-card:hover .card-meta .go i{transform:translateX(4px);}
.card-hidden{display:none;}

/* 深色保障区 */
.band{background:var(--ink);color:var(--paper);}
.band .sec-head h2{color:var(--white);}
.band .sec-head p{color:rgba(246,245,241,.72);}
.band-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
@media (max-width:991px){.band-grid{grid-template-columns:1fr;gap:36px;}}
.assure-list{border-top:1px solid var(--line-dark);}
.assure-item{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line-dark);}
.assure-num{font-family:var(--mono);font-size:22px;color:var(--lime);line-height:1.2;min-width:44px;}
.assure-item h3{font-size:1.05rem;font-weight:700;color:var(--white);}
.assure-item p{margin-top:6px;font-size:14.5px;color:rgba(246,245,241,.7);}
.band-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-dark);}
.band-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.band-media .plate{
  position:absolute;left:18px;bottom:18px;right:18px;
  background:rgba(16,18,20,.82);border:1px solid var(--line-dark);border-radius:var(--r-sm);
  padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;
}
.band-media .plate strong{font-family:var(--mono);color:var(--lime);font-size:15px;letter-spacing:.04em;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
@media (max-width:991px){.faq-wrap{grid-template-columns:1fr;gap:28px;}}
.faq-side p{color:var(--graphite);margin-top:14px;font-size:15.5px;}
.faq-side .mini{
  margin-top:24px;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--white);
}
.faq-side .mini strong{display:block;font-family:var(--mono);color:var(--orange);font-size:15px;letter-spacing:.04em;}
.faq-side .mini span{display:block;margin-top:6px;font-size:13.5px;color:var(--fog);}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;box-shadow:none;color:var(--ink);
  font-weight:700;font-size:clamp(1rem,1.5vw,1.12rem);line-height:1.55;
  padding:22px 56px 22px 0;position:relative;border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:none;}
.accordion-button:focus-visible{outline:2px solid var(--lime);outline-offset:-2px;}
.accordion-button::after{display:none;}
.accordion-button::before{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:30px;height:30px;line-height:28px;text-align:center;font-family:var(--mono);font-size:18px;
  color:var(--graphite);border:1px solid var(--line);border-radius:50%;background:var(--white);
  transition:.24s ease;
}
.accordion-button:not(.collapsed)::before{content:"−";background:var(--lime);border-color:var(--lime);color:var(--ink);}
.acc-num{font-family:var(--mono);font-size:13px;color:var(--fog);margin-right:12px;letter-spacing:.06em;}
.accordion-body{
  padding:0 56px 24px 0;border-left:3px solid var(--lime);padding-left:18px;
  color:var(--graphite);font-size:15.5px;line-height:1.85;
}
@media (max-width:767px){.accordion-body{padding-left:14px;}}

/* CTA */
.cta-block{
  background:var(--ink);color:var(--paper);border-radius:var(--r-lg);
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;
  background-image:radial-gradient(rgba(200,255,46,.22) 1px,transparent 1px);
  background-size:18px 18px;opacity:.8;pointer-events:none;
}
.cta-block h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:800;color:var(--white);line-height:1.3;}
.cta-block p{margin-top:16px;color:rgba(246,245,241,.74);font-size:15.5px;}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:10px;}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(246,245,241,.8);}
.cta-list li::before{content:"";width:14px;height:2px;background:var(--lime);margin-top:13px;flex-shrink:0;border-radius:2px;}
.lead-form{position:relative;z-index:2;background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:var(--r-md);padding:26px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;letter-spacing:.06em;color:rgba(246,245,241,.66);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:50px;padding:0 16px;border-radius:var(--r-sm);
  background:rgba(246,245,241,.06);border:1px solid var(--line-dark);color:var(--white);
  transition:.2s ease;
}
.field textarea{height:auto;min-height:96px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(246,245,241,.38);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--lime);background:rgba(246,245,241,.1);box-shadow:0 0 0 3px rgba(200,255,46,.16);}
.form-note{margin-top:14px;font-size:13px;color:var(--lime);min-height:20px;}
@media (max-width:991px){
  .cta-block{grid-template-columns:1fr;gap:32px;padding:38px 26px;}
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;align-items:center;gap:14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 10px 8px 16px;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .fstate{display:flex;flex-direction:column;line-height:1.25;}
.float-cta .fstate b{font-size:13px;font-weight:700;}
.float-cta .fstate small{font-family:var(--mono);font-size:11px;color:var(--orange);letter-spacing:.04em;}
.float-cta .btn-main{height:42px;font-size:14px;padding:0 20px;}
.float-bar{display:none;}
@media (max-width:991px){
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;
    height:60px;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:var(--white);border-top:1px solid var(--line);
    align-items:center;justify-content:space-between;gap:12px;
  }
  .float-bar .fstate{display:flex;flex-direction:column;line-height:1.2;}
  .float-bar .fstate b{font-size:13px;}
  .float-bar .fstate small{font-family:var(--mono);font-size:11px;color:var(--orange);}
  .float-bar .btn-main{height:44px;font-size:14px;padding:0 18px;}
  body{padding-bottom:80px;}
}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding-top:76px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:991px){.foot-grid{grid-template-columns:1fr 1fr;gap:34px;}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr;}}
.foot-brand .brand-name{color:var(--white);font-size:18px;}
.foot-brand .brand-sub{color:rgba(246,245,241,.5);}
.foot-brand p{margin-top:18px;color:rgba(246,245,241,.66);font-size:14.5px;max-width:300px;}
.foot-col h4{font-size:13px;letter-spacing:.14em;color:rgba(246,245,241,.5);font-family:var(--mono);font-weight:600;}
.foot-col ul{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.foot-col a{font-size:14.5px;color:rgba(246,245,241,.82);transition:.2s ease;}
.foot-col a:hover{color:var(--lime);}
.foot-contact li{font-size:14.5px;color:rgba(246,245,241,.82);}
.foot-contact .btn-main{margin-top:18px;height:44px;background:var(--lime);color:var(--ink);border-color:var(--lime);font-size:14px;}
.foot-contact .btn-main:hover{background:var(--white);border-color:var(--white);}
.foot-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(246,245,241,.52);
}
.foot-social{display:flex;gap:14px;}
.foot-social a{
  width:34px;height:34px;border:1px solid var(--line-dark);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:rgba(246,245,241,.72);transition:.2s ease;
}
.foot-social a:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

/* 滚动进入 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --lime:#C8FF2E;
  --lime-deep:#A8DB14;
  --orange:#FF5A1F;
  --ink:#101214;
  --graphite:#4A4E4D;
  --mist:#8B8F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --line:#E3E2DC;
  --line-dark:rgba(255,255,255,.12);
  --r-xs:6px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.05);
  --sh-2:0 12px 32px rgba(16,18,20,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"DIN Alternate","Barlow Condensed","Roboto Mono",ui-monospace,SFMono-Regular,monospace;
  --bs-body-font-family:var(--font-cn);
  --bs-body-color:#101214;
  --bs-body-bg:#F6F5F1;
  --bs-border-radius:14px;
  --bs-link-color:#101214;
  --bs-link-hover-color:#101214;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--lime-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-cn);margin:0;color:var(--ink);}
h1{font-size:clamp(2rem,4.8vw,3.5rem);font-weight:800;line-height:1.1;letter-spacing:-.02em;}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.2;letter-spacing:-.01em;}
h3{font-size:clamp(1.05rem,1.6vw,1.3rem);font-weight:700;line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.container{max-width:1140px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media(min-width:1200px){.container{max-width:1140px;}}
@media(min-width:1400px){.container{max-width:1320px;}}
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--graphite);
  text-transform:uppercase;font-family:var(--mono);font-weight:700;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--lime);display:block;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head p{color:var(--graphite);margin-top:14px;font-size:16.5px;}

/* 顶部活动条 */
.announce{
  background:var(--ink);color:var(--paper);height:38px;
  display:flex;align-items:center;font-size:13px;
}
.announce .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.announce-left{display:flex;align-items:center;gap:12px;min-width:0;}
.tag-live{
  background:var(--lime);color:var(--ink);font-weight:800;font-size:11.5px;
  letter-spacing:.06em;padding:2px 10px;border-radius:var(--r-pill);white-space:nowrap;
}
.countdown{font-family:var(--mono);letter-spacing:.08em;color:var(--orange);font-weight:700;}
.announce-text{color:rgba(246,245,241,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.announce-link{color:var(--paper);font-size:12.5px;border-bottom:1px solid rgba(246,245,241,.35);padding-bottom:1px;}
.announce-link:hover{color:var(--lime);border-color:var(--lime);}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,245,241,.92);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{border-bottom:1px solid var(--line);box-shadow:var(--sh-1);}
.nav-inner{height:68px;display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--ink);
  position:relative;flex:0 0 auto;
}
.brand-mark::before{
  content:"";position:absolute;left:6px;top:15px;width:18px;height:3px;
  background:var(--lime);border-radius:2px;transform:rotate(-32deg);
}
.brand-mark::after{
  content:"";position:absolute;left:16px;top:8px;width:3px;height:11px;
  background:var(--lime);border-radius:2px;transform:rotate(32deg);
}
.brand small{display:block;font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--mist);font-family:var(--mono);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:var(--graphite);
  padding:6px 0;transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.2,.7,.2,1);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:800;}
.nav-right{display:flex;align-items:center;gap:14px;}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;
  letter-spacing:.06em;color:var(--graphite);border:1px solid var(--line);
  background:var(--white);padding:6px 12px;border-radius:var(--r-pill);
}
.status-chip i{width:7px;height:7px;border-radius:50%;background:var(--orange);display:block;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink);color:var(--white);border:1px solid var(--ink);
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-weight:700;font-size:15px;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-main i{transition:transform .18s ease;}
.btn-main:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);}
.btn-main:hover i{transform:translateX(4px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;
  color:var(--ink);font-weight:700;font-size:15px;cursor:pointer;
  transition:border-color .18s ease,transform .18s ease,background .18s ease;
}
.btn-ghost:hover{border-color:var(--lime);background:var(--white);transform:translateY(-2px);}
.btn-linkline{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;
  border-bottom:2px solid var(--lime);padding-bottom:2px;
}
.btn-linkline i{transition:transform .18s ease;}
.btn-linkline:hover i{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--white);position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:12px;width:20px;height:2px;background:var(--ink);border-radius:2px;content:"";
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-6px;left:0;}
.nav-toggle span::after{top:6px;left:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

/* 面包屑 */
.breadcrumb-bar{padding:22px 0 0;font-size:13px;color:var(--mist);}
.breadcrumb-bar .sep{margin:0 8px;color:var(--line);}
.breadcrumb-bar a{color:var(--mist);}
.breadcrumb-bar a:hover{color:var(--lime-deep);}
.breadcrumb-bar .current{color:var(--ink);font-weight:700;}

/* Hero */
.cat-hero{
  position:relative;overflow:hidden;background:var(--ink);color:var(--paper);
  border-radius:var(--r-lg);margin-top:22px;padding:64px 56px 56px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.26;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(200,255,46,.30) 1px,transparent 1px);
  background-size:16px 16px;opacity:.35;
}
.cat-hero > *{position:relative;z-index:2;}
.cat-hero h1{color:var(--paper);max-width:820px;}
.cat-hero .hero-sub{
  color:rgba(246,245,241,.78);font-size:17px;max-width:640px;margin-top:20px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-info{
  font-size:12px;letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(246,245,241,.10);color:rgba(246,245,241,.85);
  border:1px solid var(--line-dark);font-weight:600;
}
.tag-status{
  font-size:12px;letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--lime);color:var(--ink);font-weight:800;
}
.tag-alert{
  font-size:12px;letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--orange);color:#fff;font-weight:800;
}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  border-top:1px solid var(--line-dark);padding-top:26px;
}
.hero-facts .fact{padding:0 32px;border-left:1px solid var(--line-dark);}
.hero-facts .fact:first-child{padding-left:0;border-left:0;}
.hero-facts .num{
  font-family:var(--mono);font-size:34px;font-weight:700;color:var(--lime);
  line-height:1;letter-spacing:-.01em;
}
.hero-facts .num em{font-style:normal;font-size:16px;color:rgba(246,245,241,.7);margin-left:4px;}
.hero-facts .lbl{font-size:12px;letter-spacing:.06em;color:rgba(246,245,241,.62);margin-top:10px;}

/* 交替图文流 */
.flow{margin-top:8px;}
.flow-item{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:52px 0;border-bottom:1px solid var(--line);
}
.flow-item:last-child{border-bottom:0;}
.flow-item .flow-media{
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  background:var(--white);box-shadow:var(--sh-1);position:relative;
}
.flow-item .flow-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1);}
.flow-item .flow-media:hover img{transform:scale(1.03);}
.flow-item:nth-child(even) .flow-media{order:2;}
.flow-item:nth-child(even) .flow-body{order:1;}
.flow-num{
  font-family:var(--mono);font-size:44px;font-weight:700;line-height:1;
  color:var(--lime-deep);letter-spacing:-.02em;display:block;margin-bottom:14px;
}
.flow-body h3{margin-bottom:14px;}
.flow-body > p{color:var(--graphite);max-width:520px;}
.flow-list{margin-top:20px;display:grid;gap:10px;}
.flow-list li{display:flex;gap:10px;font-size:15px;color:var(--graphite);line-height:1.7;}
.flow-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;
  background:var(--lime);margin-top:10px;
}

/* 对比条 */
.compare-sec{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.compare-table{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--white);
}
.compare-row{
  display:grid;grid-template-columns:1.1fr 1fr 1fr 1.15fr;
  border-bottom:1px solid var(--line);
}
.compare-row:last-child{border-bottom:0;}
.compare-row > div{padding:18px 22px;font-size:15px;color:var(--graphite);border-left:1px solid var(--line);}
.compare-row > div:first-child{border-left:0;font-weight:700;color:var(--ink);}
.compare-row.head{background:var(--paper);}
.compare-row.head > div{
  font-size:12.5px;letter-spacing:.06em;font-weight:800;color:var(--graphite);
  font-family:var(--mono);text-transform:uppercase;
}
.compare-row .col-hi{background:rgba(200,255,46,.14);color:var(--ink);font-weight:600;}
.compare-row.head .col-hi{background:var(--lime);color:var(--ink);}
.compare-row .col-hi i{color:var(--lime-deep);margin-right:8px;}

/* FAQ */
.faq-wrap{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-btn{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;gap:18px;padding:26px 4px;cursor:pointer;
  position:relative;
}
.faq-btn .fnum{font-family:var(--mono);font-size:13px;color:var(--mist);flex:0 0 auto;padding-top:4px;}
.faq-btn .ftxt{font-size:clamp(1rem,1.5vw,1.16rem);font-weight:700;color:var(--ink);flex:1;}
.faq-btn .ficon{
  flex:0 0 auto;width:26px;height:26px;position:relative;
}
.faq-btn .ficon::before,.faq-btn .ficon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .22s ease,background .22s ease;
}
.faq-btn .ficon::before{left:0;top:12px;width:26px;height:2px;}
.faq-btn .ficon::after{left:12px;top:0;width:2px;height:26px;}
.faq-btn[aria-expanded="true"] .ficon::after{transform:scaleY(0);}
.faq-btn[aria-expanded="true"] .ficon::before{background:var(--lime-deep);}
.faq-btn[aria-expanded="true"]::before{
  content:"";position:absolute;left:-14px;top:18px;bottom:18px;width:3px;
  background:var(--lime);border-radius:2px;
}
.faq-body{padding:0 4px 28px 48px;color:var(--graphite);font-size:15.5px;line-height:1.85;max-width:820px;}

/* CTA */
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:var(--r-lg);
  padding:56px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  background-image:radial-gradient(rgba(200,255,46,.35) 2px,transparent 2px);
  background-size:18px 18px;opacity:.5;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:var(--paper);}
.cta-band .lead{color:rgba(246,245,241,.75);margin-top:16px;max-width:560px;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.form-row{display:flex;gap:12px;flex-wrap:wrap;}
.form-field{flex:1 1 200px;display:flex;flex-direction:column;gap:6px;}
.form-field label{font-size:12.5px;letter-spacing:.06em;color:rgba(246,245,241,.65);font-weight:600;}
.form-control{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);color:var(--paper);padding:0 16px;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-control::placeholder{color:rgba(246,245,241,.38);}
.form-control:focus{
  outline:0;border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,255,46,.18);
  background:rgba(255,255,255,.10);
}
.form-note{font-size:12.5px;color:rgba(246,245,241,.5);margin-top:14px;}
.form-msg{margin-top:14px;font-size:13.5px;color:var(--lime);display:none;}
.form-msg.show{display:block;}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;align-items:center;gap:14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:10px 12px 10px 18px;box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .fc-link{
  display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:var(--white);
  height:40px;padding:0 18px;border-radius:var(--r-pill);font-weight:700;font-size:14px;
}
.float-cta .fc-link:hover{background:var(--lime);color:var(--ink);}
.fc-bar{width:64px;height:4px;border-radius:2px;background:var(--line);overflow:hidden;}
.fc-bar i{display:block;height:100%;width:42%;background:var(--lime);}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(246,245,241,.72);margin-top:96px;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--paper);font-weight:800;font-size:19px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);}
.footer-desc{font-size:14.5px;line-height:1.85;max-width:300px;}
.footer-title{font-size:12.5px;letter-spacing:.08em;color:var(--paper);font-weight:800;margin-bottom:18px;font-family:var(--mono);text-transform:uppercase;}
.footer-links{display:grid;gap:12px;}
.footer-links a{color:rgba(246,245,241,.72);font-size:14.5px;}
.footer-links a:hover{color:var(--lime);}
.footer-contact{font-size:14.5px;display:grid;gap:12px;}
.footer-contact span{color:rgba(246,245,241,.55);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,245,241,.5);
}
.footer-social{display:flex;gap:16px;}
.footer-social a{color:rgba(246,245,241,.6);font-size:16px;}
.footer-social a:hover{color:var(--lime);}

/* 进入动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* 响应式 1200–1399 */
@media(max-width:1399px){
  .cat-hero{padding:56px 44px 48px;}
}
/* 992–1199 */
@media(max-width:1199px){
  .section{padding:80px 0;}
  .flow-item{gap:40px;}
  .nav-links{gap:18px;}
}
/* 768–991 导航折叠 + 浮动 CTA 转底栏 */
@media(max-width:991px){
  .section{padding:72px 0;}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;
    background:var(--white);flex-direction:column;align-items:stretch;
    padding:88px 28px 28px;gap:8px;box-shadow:var(--sh-2);
    transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.2,1);
    z-index:1055;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{font-size:18px;padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--lime-deep);}
  .nav-toggle{display:block;margin-left:auto;z-index:1060;}
  .nav-right .status-chip,.nav-right .btn-main{display:none;}
  .nav-backdrop{
    position:fixed;inset:0;background:rgba(16,18,20,.45);z-index:1050;
    opacity:0;pointer-events:none;transition:opacity .25s ease;
  }
  .nav-backdrop.show{opacity:1;pointer-events:auto;}
  .cat-hero{padding:52px 32px 44px;border-radius:var(--r-md);}
  .flow-item{grid-template-columns:1fr;gap:26px;padding:44px 0;}
  .flow-item:nth-child(even) .flow-media{order:1;}
  .flow-item:nth-child(even) .flow-body{order:2;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:40px 30px;}
  .compare-row{grid-template-columns:1fr 1fr;}
  .compare-row.head{display:none;}
  .compare-row > div:nth-child(3),.compare-row > div:nth-child(4){border-top:1px solid var(--line);}
  .compare-row > div:nth-child(3){border-left:0;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:10px 20px calc(10px + env(safe-area-inset-bottom));justify-content:space-between;
  }
  .float-cta .fc-bar{display:none;}
  body{padding-bottom:80px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .faq-body{padding-left:0;}
}
/* <768 */
@media(max-width:767px){
  body{font-size:16px;}
  .section{padding:48px 0;}
  .container{padding-left:20px;padding-right:20px;}
  .announce-text{display:none;}
  .cat-hero{padding:38px 22px 34px;margin-top:16px;}
  .hero-facts{gap:20px 0;margin-top:32px;}
  .hero-facts .fact{padding:0 18px;}
  .hero-facts .num{font-size:26px;}
  .flow-num{font-size:34px;}
  .compare-row{grid-template-columns:1fr;}
  .compare-row > div{border-left:0;border-top:1px solid var(--line);}
  .compare-row > div:first-child{border-top:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .cta-band{padding:32px 22px;}
  .form-row{flex-direction:column;}
  .form-field{flex:1 1 100%;}
  .form-field .btn-main{width:100%;justify-content:center;}
}

/* roulang page: category3 */
:root{
  --brand:#C8FF2E;
  --accent:#FF5A1F;
  --ink:#101214;
  --ink-2:#4A4E4D;
  --muted:#8B8F8C;
  --paper:#F6F5F1;
  --white:#FFFFFF;
  --line:#E3E2DC;
  --line-dark:rgba(255,255,255,.12);
  --r-xs:6px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,20,.05);
  --sh-2:0 12px 32px rgba(16,18,20,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"DIN Alternate","Barlow Condensed","Roboto Mono",ui-monospace,monospace;
  --wrap:1320px;
  --sec-y:clamp(48px,7.5vw,110px);
  --head-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container-x{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container-x{max-width:1320px;}}
@media (max-width:1399px){.container-x{max-width:1140px;}}
@media (max-width:1199px){.container-x{max-width:960px;}}
@media (max-width:991px){.container-x{max-width:720px;}}
@media (max-width:767px){.container-x{max-width:100%;padding:0 18px;}}

/* ============ 顶部活动条 ============ */
.announce{background:var(--ink);color:var(--paper);font-size:13px;}
.announce-inner{
  display:flex;align-items:center;gap:16px;
  min-height:38px;padding-top:4px;padding-bottom:4px;
}
.announce-text{letter-spacing:.02em;color:rgba(246,245,241,.82);}
.announce-link{
  margin-left:auto;color:rgba(246,245,241,.78);
  border-bottom:1px solid rgba(246,245,241,.28);
  padding-bottom:1px;font-size:13px;
  transition:color .2s ease,border-color .2s ease;
}
.announce-link:hover{color:var(--brand);border-color:var(--brand);}
.badge-brand{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  background:var(--brand);color:var(--ink);
  border-radius:var(--r-pill);font-size:12px;font-weight:700;letter-spacing:.06em;
  white-space:nowrap;
}
.countdown{
  font-family:var(--font-mono);font-size:15px;font-weight:700;
  color:var(--accent);letter-spacing:.04em;white-space:nowrap;
}
@media (max-width:767px){
  .announce-text{display:none;}
  .announce-inner{gap:10px;}
}

/* ============ 导航 ============ */
.site-head{
  position:sticky;top:0;z-index:1040;
  background:rgba(246,245,241,.94);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-head.is-stuck{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(16,18,20,.05);}
.head-inner{
  display:flex;align-items:center;gap:28px;
  height:var(--head-h);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:var(--ink);display:grid;place-items:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{
  font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;
}
.brand-text em{font-style:normal;color:var(--ink-2);font-weight:700;font-size:15px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;font-size:15px;font-weight:600;color:var(--ink-2);
  border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .25s cubic-bezier(.2,.7,.2,1);
}
.nav-links a:hover{color:var(--ink);background:rgba(16,18,20,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);}
.nav-links a.is-active::after{transform:scaleX(1);}
.head-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.status-chip{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border:1px solid var(--line);
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.06em;color:var(--ink-2);
  background:var(--white);white-space:nowrap;
}
.status-chip i{
  width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;
  box-shadow:0 0 0 3px rgba(200,255,46,.35);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1px solid transparent;
  border-radius:var(--r-pill);font-weight:700;font-size:15px;letter-spacing:.01em;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  cursor:pointer;white-space:nowrap;
}
.btn-solid{background:var(--ink);color:var(--white);}
.btn-solid:hover{background:#000;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-lime{background:var(--brand);color:var(--ink);}
.btn-lime:hover{background:#b9ef12;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-onDark-ghost{background:transparent;border-color:var(--line-dark);color:var(--paper);}
.btn-onDark-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn .arw{transition:transform .22s ease;}
.btn:hover .arw{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--white);
  border-radius:var(--r-sm);position:relative;cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--ink);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span:nth-child(1){top:16px;}
.nav-toggle span:nth-child(2){bottom:16px;}
@media (max-width:1100px){
  .nav-links a{padding:0 10px;font-size:14px;}
  .head-inner{gap:16px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .status-chip{display:none;}
  .nav-toggle{display:block;}
  .head-actions .btn{height:42px;padding:0 16px;font-size:14px;}
}
@media (max-width:420px){
  .brand-text{font-size:17px;}
  .head-actions .btn{display:none;}
}
.offcanvas{background:var(--paper);border-left:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);height:64px;padding:0 22px;}
.offcanvas-title{font-weight:800;font-size:17px;}
.btn-close-custom{
  width:44px;height:44px;border:1px solid var(--line);background:var(--white);
  border-radius:var(--r-sm);position:relative;margin-left:auto;cursor:pointer;
}
.btn-close-custom::before,.btn-close-custom::after{
  content:"";position:absolute;left:13px;right:13px;top:21px;height:2px;background:var(--ink);
}
.btn-close-custom::before{transform:rotate(45deg);}
.btn-close-custom::after{transform:rotate(-45deg);}
.drawer-nav{display:flex;flex-direction:column;padding:12px 0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 24px;font-size:18px;font-weight:700;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-nav a.is-active{color:var(--ink);border-left:3px solid var(--brand);padding-left:21px;}
.drawer-nav a span{font-family:var(--font-mono);font-size:12px;color:var(--muted);}
.offcanvas-foot{padding:20px 22px 26px;margin-top:auto;}
.offcanvas-foot .btn{width:100%;}
.offcanvas-body{display:flex;flex-direction:column;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center right;
  opacity:.16;filter:saturate(.75);
  pointer-events:none;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,var(--paper) 34%,rgba(246,245,241,.55) 68%,rgba(246,245,241,.15) 100%);
}
.hero-inner{position:relative;padding-top:clamp(40px,6vw,72px);padding-bottom:clamp(38px,5.5vw,66px);}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);}
.crumb span.sep{color:#C9C8C2;}
.crumb strong{color:var(--ink);font-weight:700;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(200,255,46,.28);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(2rem,4.4vw,3.3rem);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
  max-width:16em;
}
.hero-sub{
  margin-top:16px;max-width:36em;
  font-size:17px;line-height:1.8;color:var(--ink-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:38px;
  border-top:1px solid var(--line);padding-top:22px;
}
.hero-stats .stat{
  padding-right:28px;margin-right:28px;border-right:1px solid var(--line);
}
.hero-stats .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.stat-num{
  font-family:var(--font-mono);font-size:clamp(1.6rem,2.6vw,2.1rem);
  font-weight:700;line-height:1;letter-spacing:-.01em;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--ink-2);margin-left:2px;}
.stat-lb{font-size:12px;color:var(--muted);letter-spacing:.06em;margin-top:8px;}
@media (max-width:520px){
  .hero-stats .stat{padding-right:18px;margin-right:18px;}
  .hero-actions .btn{width:100%;}
}

/* ============ 主体两栏 ============ */
.layout{
  display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);
  gap:40px;align-items:start;
  padding-top:var(--sec-y);padding-bottom:var(--sec-y);
}
@media (max-width:991px){.layout{grid-template-columns:1fr;gap:32px;}}

.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;margin-bottom:14px;
}
.sec-label::before{content:"";width:22px;height:2px;background:var(--brand);display:block;}
.sec-title{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.2;letter-spacing:-.01em;}
.sec-desc{margin-top:12px;max-width:44em;color:var(--ink-2);font-size:16px;}

/* 编号纵向列表 */
.tl{margin-top:34px;border-top:1px solid var(--line);}
.tl-item{
  position:relative;display:grid;
  grid-template-columns:78px minmax(0,1fr) 40px;
  gap:22px;align-items:start;
  padding:26px 0 26px 0;
  border-bottom:1px solid var(--line);
  transition:transform .25s cubic-bezier(.2,.7,.2,1);
}
.tl-item::before{
  content:"";position:absolute;left:-22px;top:26px;bottom:26px;width:3px;
  background:var(--brand);border-radius:2px;
  transform:scaleY(0);transform-origin:top;
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
}
.tl-item:hover{transform:translateX(4px);}
.tl-item:hover::before{transform:scaleY(1);}
.tl-num{
  font-family:var(--font-mono);font-size:34px;font-weight:700;line-height:1;
  color:#D9D8D1;letter-spacing:-.02em;
  transition:color .25s ease;
}
.tl-item:hover .tl-num{color:var(--ink);}
.tl-body h3{font-size:clamp(1.05rem,1.6vw,1.28rem);font-weight:700;line-height:1.4;}
.tl-body p{margin-top:10px;color:var(--ink-2);font-size:15.5px;line-height:1.85;max-width:44em;}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;
  background:rgba(16,18,20,.05);color:var(--ink-2);
}
.chip-lime{background:rgba(200,255,46,.32);color:var(--ink);font-weight:700;}
.chip-line{background:transparent;border:1px solid var(--line);color:var(--ink-2);}
.tl-arw{
  display:grid;place-items:center;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink-2);font-size:16px;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.tl-item:hover .tl-arw{background:var(--ink);border-color:var(--ink);color:var(--brand);transform:translateX(2px);}
@media (max-width:640px){
  .tl-item{grid-template-columns:52px minmax(0,1fr) 0;gap:14px;}
  .tl-num{font-size:26px;}
  .tl-arw{display:none;}
  .tl-item::before{left:-14px;}
}

/* 粘性侧栏 */
.side{position:sticky;top:calc(var(--head-h) + 26px);display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
}
.panel-title{
  font-size:15px;font-weight:800;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.panel-title::before{content:"";width:3px;height:15px;background:var(--brand);border-radius:2px;}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.side-list li b{
  font-family:var(--font-mono);font-size:12px;color:var(--accent);
  flex-shrink:0;padding-top:2px;letter-spacing:.04em;
}
.side-links{display:flex;flex-direction:column;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:46px;border-bottom:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,padding-left .2s ease;
}
.side-links a:last-child{border-bottom:0;}
.side-links a:hover{color:var(--ink);padding-left:6px;}
.side-links a i{font-style:normal;color:var(--muted);font-family:var(--font-mono);font-size:12px;}
.panel-dark{background:var(--ink);border-color:var(--ink);color:var(--paper);}
.panel-dark .panel-title{color:var(--paper);}
.panel-dark .panel-title::before{background:var(--brand);}
.panel-dark .form-note{color:rgba(246,245,241,.6);}

/* 表单 */
.field{margin-bottom:12px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;letter-spacing:.04em;}
.field .control{
  width:100%;height:48px;padding:0 14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field .control:hover{border-color:#CFCEC6;}
.field .control:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(200,255,46,.35);
}
.field select.control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.panel-dark .field .control{background-color:rgba(255,255,255,.06);border-color:var(--line-dark);color:var(--paper);}
.panel-dark .field .control::placeholder{color:rgba(246,245,241,.45);}
.panel-dark .field .control:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(200,255,46,.25);}
.form-note{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.7;}
.btn-block{width:100%;}

/* ============ 深色配置区 ============ */
.band{
  background:var(--ink);color:var(--paper);
  padding-top:var(--sec-y);padding-bottom:var(--sec-y);
}
.band .sec-title{color:var(--paper);}
.band .sec-desc{color:rgba(246,245,241,.66);}
.band .sec-label{color:rgba(246,245,241,.5);}
.cfg-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;margin-top:38px;
}
@media (max-width:991px){.cfg-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:520px){.cfg-grid{grid-template-columns:1fr;}}
.cfg-card{
  border:1px solid var(--line-dark);border-radius:var(--r-md);
  padding:24px;background:rgba(255,255,255,.03);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.cfg-card:hover{border-color:var(--brand);transform:translateY(-3px);background:rgba(255,255,255,.05);}
.cfg-card .n{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--brand);display:block;margin-bottom:14px;
}
.cfg-card h3{font-size:17px;font-weight:700;color:var(--paper);}
.cfg-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:rgba(246,245,241,.66);}
.cfg-card .val{
  display:block;margin-top:16px;padding-top:14px;border-top:1px solid var(--line-dark);
  font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1;
}
.cfg-card .val small{font-family:var(--font-cn);font-size:12px;color:rgba(246,245,241,.55);margin-left:6px;letter-spacing:.04em;}

/* ============ 表格 ============ */
.table-wrap{
  margin-top:32px;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--white);
}
table.spec{width:100%;border-collapse:collapse;min-width:660px;}
table.spec th,table.spec td{
  padding:16px 20px;text-align:left;font-size:14.5px;
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.spec thead th{
  background:#EFEEE8;font-weight:700;font-size:13px;letter-spacing:.06em;color:var(--ink-2);
  white-space:nowrap;
}
table.spec tbody tr:last-child td{border-bottom:0;}
table.spec tbody tr{transition:background .2s ease;}
table.spec tbody tr:hover{background:#FBFAF7;}
table.spec td.mono{font-family:var(--font-mono);letter-spacing:.02em;color:var(--ink);white-space:nowrap;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;}
.acc{margin-top:30px;border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-btn{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:22px 0;background:transparent;border:0;text-align:left;cursor:pointer;
  transition:color .2s ease;
}
.acc-btn .q-num{
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
  padding-top:6px;letter-spacing:.08em;flex-shrink:0;
}
.acc-btn .q-text{
  font-size:clamp(1rem,1.4vw,1.12rem);font-weight:700;line-height:1.55;flex:1;
}
.acc-btn:hover .q-text{color:#000;}
.acc-sign{
  position:relative;width:26px;height:26px;flex-shrink:0;margin-top:2px;
  border:1px solid var(--line);border-radius:50%;
  transition:border-color .22s ease,background .22s ease,transform .22s ease;
}
.acc-sign::before,.acc-sign::after{
  content:"";position:absolute;background:var(--ink);left:7px;right:7px;top:12px;height:2px;
  transition:opacity .22s ease,background .22s ease;
}
.acc-sign::after{transform:rotate(90deg);}
.acc-btn[aria-expanded="true"] .acc-sign{background:var(--brand);border-color:var(--brand);}
.acc-btn[aria-expanded="true"] .acc-sign::after{opacity:0;}
.acc-body{
  padding:0 0 24px 0;
  border-left:3px solid transparent;
  transition:border-color .22s ease,padding-left .22s ease;
}
.acc-body.show,.acc-body.collapsing{border-left-color:var(--brand);padding-left:18px;}
.acc-body p{color:var(--ink-2);font-size:15.5px;line-height:1.85;max-width:64em;}
.acc-body p + p{margin-top:10px;}

/* ============ CTA ============ */
.cta{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  padding-top:var(--sec-y);padding-bottom:var(--sec-y);
}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:44px;align-items:center;}
@media (max-width:991px){.cta-grid{grid-template-columns:1fr;gap:30px;}}
.cta h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.22;color:var(--paper);}
.cta p{margin-top:14px;color:rgba(246,245,241,.68);max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-dark);
  aspect-ratio:16/11;background:#1a1d1f;
}
.cta-media img{width:100%;height:100%;object-fit:cover;opacity:.9;}
@media (max-width:520px){.cta-actions .btn{width:100%;}}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink);color:rgba(246,245,241,.72);border-top:1px solid var(--line-dark);}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding:72px 0 52px;
}
@media (max-width:991px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 40px;}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr;gap:28px;}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-mark{background:var(--brand);}
.foot-brand .brand-text{color:var(--paper);font-size:19px;}
.foot-about{font-size:14.5px;line-height:1.85;color:rgba(246,245,241,.62);max-width:26em;}
.foot-col h4{
  font-size:13px;letter-spacing:.1em;color:rgba(246,245,241,.45);
  font-weight:700;margin-bottom:16px;
}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col a{font-size:14.5px;color:rgba(246,245,241,.78);transition:color .2s ease;}
.foot-col a:hover{color:var(--brand);}
.foot-contact li{font-size:14.5px;line-height:1.8;color:rgba(246,245,241,.7);}
.foot-contact li b{
  display:block;font-family:var(--font-mono);font-size:19px;font-weight:700;
  color:var(--paper);margin-bottom:2px;letter-spacing:.02em;
}
.foot-bottom{
  border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:22px 0 28px;font-size:13px;color:rgba(246,245,241,.5);
}
.foot-social{display:flex;gap:10px;}
.foot-social a{
  width:36px;height:36px;border:1px solid var(--line-dark);border-radius:50%;
  display:grid;place-items:center;color:rgba(246,245,241,.7);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.foot-social a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);}
.foot-social svg{width:16px;height:16px;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1050;
  display:flex;align-items:center;gap:12px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 8px 8px 16px;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s;
}
.float-cta.is-on{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .fc-link{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--ink);color:var(--white);font-weight:700;font-size:14.5px;
  transition:background .2s ease,color .2s ease;
}
.float-cta .fc-link:hover{background:var(--brand);color:var(--ink);}
.fc-bar{
  position:absolute;left:16px;right:16px;bottom:4px;height:2px;
  background:var(--line);border-radius:2px;overflow:hidden;
}
.fc-bar i{display:block;height:100%;width:0;background:var(--brand);transition:width .15s linear;}
@media (max-width:991px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    justify-content:space-between;transform:translateY(100%);
    background:var(--ink);border-top:1px solid var(--line-dark);box-shadow:0 -8px 24px rgba(16,18,20,.18);
  }
  .float-cta.is-on{transform:translateY(0);}
  .float-cta .fc-link{background:var(--brand);color:var(--ink);}
  .fc-bar{display:none;}
  body{padding-bottom:78px;}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  .reveal.is-in{transition:none;}
  .tl-item,.cfg-card,.btn,.float-cta{transition:none;}
  .tl-item:hover{transform:none;}
}