/* roulang page: index */
:root{
  --brand:#0E7C86;
  --brand-strong:#0A5C66;
  --brand-soft:#E8F4F5;
  --accent:#E2762B;
  --success:#1F9D6B;
  --warning:#C9453A;
  --bg:#F4F6F5;
  --surface:#FFFFFF;
  --panel:#0F1A1F;
  --panel-text:#E8EDEC;
  --text:#1B2426;
  --text-muted:#5B6A6E;
  --border:rgba(15,26,31,.08);
  --border-strong:rgba(15,26,31,.16);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-soft:0 6px 24px -10px rgba(15,26,31,.16);
  --shadow-lift:0 18px 40px -20px rgba(15,26,31,.36);
  --shadow-glow:0 0 0 1px rgba(14,124,134,.28), 0 14px 32px -12px rgba(14,124,134,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:72px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:1rem;line-height:1.85;font-weight:400;
  text-align:left;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:1rem;}
.mono{font-family:var(--font-mono);letter-spacing:-.02em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:var(--space-8) 0;scroll-margin-top:150px;}
.section--tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);letter-spacing:-.01em;}
.section-desc{margin-top:10px;color:var(--text-muted);max-width:640px;font-size:.98rem;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.08em;color:var(--brand-strong);text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(244,246,245,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:box-shadow .3s var(--ease),border-color .3s var(--ease);border-bottom:1px solid transparent;}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 10px 30px -24px rgba(15,26,31,.75);}
.nav-panel{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-soft);padding:10px 14px;margin:12px 0 10px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand) 0%,#125F8E 100%);color:#fff;display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:1rem;box-shadow:0 8px 18px -10px rgba(14,124,134,.9);}
.brand-text{font-size:1.06rem;font-weight:700;letter-spacing:.01em;}
.brand-text small{display:block;font-size:.66rem;font-weight:500;color:var(--text-muted);letter-spacing:.14em;line-height:1.4;}
.nav-cards{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-card{position:relative;display:flex;align-items:center;gap:8px;padding:8px 13px;border-radius:12px;border:1px solid transparent;font-size:.93rem;color:var(--text-muted);white-space:nowrap;transition:all .22s var(--ease);}
.nav-card i{font-size:.9rem;color:var(--brand);opacity:.85;}
.nav-card:hover{transform:translateY(-2px);background:#fff;border-color:var(--border);color:var(--brand-strong);box-shadow:0 12px 22px -18px rgba(15,26,31,.7);}
.nav-card.is-active{background:var(--brand-soft);border-color:rgba(14,124,134,.24);color:var(--brand-strong);font-weight:700;}
.nav-card.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);}
.nav-card .dot{position:absolute;top:4px;right:6px;font-size:.6rem;background:var(--accent);color:#fff;border-radius:999px;padding:1px 5px;font-style:normal;font-weight:700;line-height:1.5;}
.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--radius-btn);font-size:.93rem;font-weight:700;border:1px solid transparent;transition:all .22s var(--ease);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(14,124,134,.95);}
.btn-primary:hover{background:var(--brand-strong);box-shadow:var(--shadow-glow);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px -10px rgba(14,124,134,.9);}
.btn-outline{background:transparent;color:var(--brand-strong);border-color:rgba(14,124,134,.35);}
.btn-outline:hover{background:rgba(14,124,134,.08);border-color:var(--brand);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{background:#F1F4F3;color:var(--text-muted);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-strong);}
.btn-lg{padding:13px 26px;font-size:1rem;border-radius:12px;}
.btn-block{width:100%;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--brand-strong);font-size:1rem;align-items:center;justify-content:center;}

/* anchor bar */
.anchor-bar{padding-bottom:12px;}
.anchor-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:2px 0 6px;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-pill{flex:0 0 auto;padding:7px 15px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--border);font-size:.86rem;color:var(--text-muted);font-weight:500;transition:all .22s var(--ease);}
.anchor-pill:hover{border-color:rgba(14,124,134,.4);color:var(--brand-strong);transform:translateY(-1px);}
.anchor-pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 8px 18px -12px rgba(14,124,134,.95);}

/* drawer */
.drawer{max-height:0;overflow:hidden;transition:max-height .38s var(--ease);}
.drawer.open{max-height:560px;}
.drawer-inner{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-soft);padding:14px;margin-bottom:14px;display:grid;gap:10px;}
.drawer-link{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;border:1px solid var(--border);color:var(--text);font-weight:500;}
.drawer-link i{width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand-strong);display:grid;place-items:center;font-size:.9rem;}
.drawer-link:hover,.drawer-link.is-active{border-color:rgba(14,124,134,.4);color:var(--brand-strong);background:rgba(14,124,134,.05);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 64px;background:linear-gradient(180deg,#EFF4F3 0%,#F4F6F5 100%);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.2;}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(14,124,134,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(14,124,134,.05) 1px,transparent 1px);background-size:46px 46px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);background:#fff;border:1px solid rgba(14,124,134,.22);color:var(--brand-strong);font-size:.82rem;font-weight:700;box-shadow:var(--shadow-soft);}
.hero h1{margin-top:20px;font-size:clamp(2rem,4vw,3.25rem);letter-spacing:-.02em;line-height:1.22;}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand) 0%,#125F8E 55%,var(--accent) 130%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:18px;font-size:1.05rem;color:var(--text-muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:34px;}
.stat{background:rgba(255,255,255,.86);border:1px solid var(--border);border-radius:var(--radius-card);padding:14px 16px;box-shadow:var(--shadow-soft);}
.stat-num{display:block;font-family:var(--font-mono);font-size:1.5rem;font-weight:700;color:var(--brand-strong);line-height:1.2;}
.stat-label{display:block;margin-top:4px;font-size:.82rem;color:var(--text-muted);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;height:auto;border-radius:20px;box-shadow:var(--shadow-lift);object-fit:cover;aspect-ratio:4/3;}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:20px;background:linear-gradient(160deg,rgba(14,124,134,.26) 0%,rgba(18,95,142,.18) 45%,rgba(15,26,31,.42) 100%);pointer-events:none;}
.float-tag{position:absolute;z-index:3;display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:var(--radius-pill);padding:7px 14px;font-size:.82rem;font-weight:700;color:var(--brand-strong);box-shadow:var(--shadow-soft);backdrop-filter:blur(6px);}
.float-tag--tl{top:18px;left:18px;}
.float-tag--br{bottom:18px;right:18px;color:var(--accent);}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(31,157,107,.18);}

/* ---------- benefits ---------- */
.benefit-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:22px;}
.benefit-main{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-soft);padding:30px;display:flex;flex-direction:column;justify-content:space-between;min-height:340px;}
.benefit-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16;}
.benefit-main .inner{position:relative;z-index:2;}
.icon-block{width:48px;height:48px;border-radius:14px;background:var(--brand-soft);color:var(--brand-strong);display:grid;place-items:center;font-size:1.15rem;flex-shrink:0;}
.benefit-main h3{margin-top:20px;font-size:1.35rem;}
.benefit-main p{margin-top:12px;color:var(--text-muted);font-size:.96rem;max-width:460px;}
.benefit-list{display:grid;gap:22px;}
.benefit-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-soft);padding:20px 22px;display:flex;gap:16px;transition:all .26s var(--ease);}
.benefit-card:nth-child(2){transform:translateX(12px);}
.benefit-card:hover{transform:translateX(0) translateY(-3px);border-color:rgba(14,124,134,.34);box-shadow:var(--shadow-lift);}
.benefit-card h4{font-size:1.02rem;}
.benefit-card p{margin-top:6px;font-size:.9rem;color:var(--text-muted);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--radius-pill);font-size:.76rem;font-weight:700;letter-spacing:.01em;}
.badge-brand{background:var(--brand-soft);color:var(--brand-strong);}
.badge-accent{background:var(--accent-soft,#FBEBDD);color:#A8551A;}
.badge-line{background:#fff;border:1px solid var(--border);color:var(--text-muted);}

/* ---------- demo ---------- */
.demo{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.demo-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center;}
.demo-frame{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lift);border:1px solid var(--border);}
.demo-frame img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.demo-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(14,124,134,.16),rgba(15,26,31,.35));}
.demo-corner{position:absolute;z-index:3;bottom:16px;left:16px;background:rgba(255,255,255,.94);border-radius:12px;border:1px solid var(--border);padding:10px 14px;box-shadow:var(--shadow-soft);font-size:.84rem;font-weight:700;color:var(--brand-strong);display:flex;align-items:center;gap:8px;}
.demo-corner.second{left:auto;right:16px;bottom:16px;color:var(--accent);}
.step-list{display:grid;gap:16px;margin-top:26px;}
.step{position:relative;padding-left:22px;border-left:2px solid rgba(14,124,134,.28);padding-top:2px;padding-bottom:2px;}
.step::before{content:attr(data-step);position:absolute;left:-15px;top:0;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;font-family:var(--font-mono);font-size:.78rem;display:grid;place-items:center;font-weight:700;box-shadow:0 6px 14px -8px rgba(14,124,134,.95);}
.step h4{font-size:1rem;padding-left:12px;}
.step p{margin-top:5px;padding-left:12px;font-size:.9rem;color:var(--text-muted);}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.proof-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-soft);text-align:left;}
.proof-card .num{font-family:var(--font-mono);font-size:1.75rem;font-weight:700;color:var(--brand-strong);line-height:1.2;}
.proof-card .num span{font-size:.9rem;color:var(--text-muted);margin-left:2px;}
.proof-card p{margin-top:8px;font-size:.88rem;color:var(--text-muted);}
.channel-wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:22px;}
.channel-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;transition:all .26s var(--ease);box-shadow:var(--shadow-soft);}
.channel-card:hover{transform:translateY(-4px);border-color:rgba(14,124,134,.34);box-shadow:var(--shadow-lift);}
.channel-card h4{margin-top:16px;font-size:1.02rem;}
.channel-card p{margin-top:8px;font-size:.9rem;color:var(--text-muted);}

/* ---------- news ---------- */
.news-band{background:linear-gradient(180deg,#F4F6F5 0%,#EDF2F1 100%);border-top:1px solid var(--border);}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);transition:all .26s var(--ease);}
.news-card:hover{transform:translateY(-5px);border-color:rgba(14,124,134,.34);box-shadow:var(--shadow-lift);}
.news-cover{display:block;position:relative;overflow:hidden;}
.news-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.05);}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.news-title{font-size:1.02rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-title{color:var(--brand-strong);}
.news-excerpt{font-size:.88rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:12px;border-top:1px dashed var(--border-strong);display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--text-muted);}
.news-meta .go{color:var(--brand-strong);font-weight:700;}
.empty-card{grid-column:1 / -1;background:#fff;border:1px dashed var(--border-strong);border-radius:var(--radius-card);padding:40px 24px;text-align:center;color:var(--text-muted);display:flex;flex-direction:column;align-items:center;gap:14px;}

/* ---------- price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch;}
.price-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:18px;padding:28px;box-shadow:var(--shadow-soft);display:flex;flex-direction:column;transition:all .26s var(--ease);}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
.price-card.is-featured{border:1.5px solid var(--brand);box-shadow:0 0 0 4px rgba(14,124,134,.08),var(--shadow-lift);}
.price-tag{position:absolute;top:-13px;left:28px;background:var(--brand);color:#fff;font-size:.76rem;font-weight:700;padding:5px 13px;border-radius:var(--radius-pill);box-shadow:0 8px 18px -10px rgba(14,124,134,.95);}
.price-name{font-size:1.1rem;}
.price-desc{margin-top:8px;font-size:.86rem;color:var(--text-muted);min-height:44px;}
.price-amount{margin-top:18px;display:flex;align-items:baseline;gap:6px;font-family:var(--font-mono);}
.price-amount strong{font-size:2.1rem;font-weight:700;color:var(--brand-strong);line-height:1;}
.price-amount span{font-size:.84rem;color:var(--text-muted);font-family:var(--font-sans);}
.price-list{margin:22px 0;display:grid;gap:11px;font-size:.9rem;color:var(--text-muted);}
.price-list li{display:flex;gap:10px;align-items:flex-start;line-height:1.75;}
.price-list i{color:var(--success);font-size:.82rem;margin-top:6px;}
.price-card .btn{margin-top:auto;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:14px;}
.faq{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-soft);overflow:hidden;transition:border-color .22s var(--ease);}
.faq[open]{border-color:rgba(14,124,134,.34);}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:1rem;display:flex;align-items:center;gap:14px;justify-content:space-between;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand-strong);}
.faq summary .chev{width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand-strong);display:grid;place-items:center;font-size:.72rem;flex-shrink:0;transition:transform .26s var(--ease);}
.faq[open] summary .chev{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;color:var(--text-muted);font-size:.93rem;line-height:1.9;border-top:1px dashed var(--border-strong);padding-top:16px;margin:0 22px 20px;padding-left:0;padding-right:0;}

/* ---------- cta ---------- */
.cta-panel{position:relative;overflow:hidden;background:var(--panel);border-radius:22px;padding:56px 40px;text-align:center;color:var(--panel-text);}
.cta-panel::before{content:"";position:absolute;top:-120px;right:-80px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(14,124,134,.55),transparent 65%);}
.cta-panel::after{content:"";position:absolute;bottom:-140px;left:-60px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(226,118,43,.35),transparent 68%);}
.cta-panel .inner{position:relative;z-index:2;max-width:660px;margin:0 auto;}
.cta-panel h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2rem);}
.cta-panel p{margin-top:14px;color:rgba(232,237,236,.78);font-size:.98rem;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:28px;}
.btn-light{background:#fff;color:var(--panel);}
.btn-light:hover{background:#E8EDEC;box-shadow:0 0 0 1px rgba(255,255,255,.5),0 16px 34px -18px rgba(255,255,255,.6);}
.btn-onDark{border-color:rgba(255,255,255,.34);color:#fff;}
.btn-onDark:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);}
.cta-note{margin-top:18px;font-size:.82rem;color:rgba(232,237,236,.6);}

/* ---------- footer ---------- */
.site-footer{background:#0B1418;color:rgba(232,237,236,.72);margin-top:72px;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#0E7C86,#125F8E);}
.footer-brand strong{color:#fff;font-size:1.05rem;}
.footer-about{font-size:.88rem;line-height:1.9;max-width:320px;}
.footer-title{color:#fff;font-size:.94rem;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:grid;gap:10px;font-size:.88rem;}
.footer-links a:hover{color:var(--accent);}
.footer-contact{display:grid;gap:10px;font-size:.88rem;}
.footer-contact span{color:#fff;font-weight:500;}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8rem;color:rgba(232,237,236,.5);}
.footer-bottom .mono{color:rgba(232,237,236,.62);}

/* ---------- float cta ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:90;display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:var(--radius-pill);background:var(--brand);color:#fff;font-weight:700;font-size:.92rem;box-shadow:0 16px 34px -16px rgba(14,124,134,.95);opacity:0;transform:translateY(14px);pointer-events:none;transition:all .3s var(--ease);}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--brand-strong);box-shadow:var(--shadow-glow);}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;}
  .benefit-grid,.demo-grid{grid-template-columns:1fr;}
  .benefit-card:nth-child(2){transform:none;}
  .proof-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-cards,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-actions{margin-left:12px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .hero{padding:34px 0 46px;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .hero-stats{grid-template-columns:1fr;}
  .channel-wall{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .cta-panel{padding:40px 20px;border-radius:18px;}
  .float-cta{padding:12px 16px;font-size:.86rem;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section-head{margin-bottom:24px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text small{display:none;}
  .brand-text{font-size:1rem;}
  .nav-actions .btn-primary{padding:9px 14px;font-size:.86rem;}
  .proof-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .float-cta span{display:none;}
  .float-cta{padding:13px;border-radius:50%;width:48px;height:48px;justify-content:center;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --brand:#0E7C86;
  --brand-strong:#0A5C66;
  --brand-light:#3FA9B2;
  --accent:#E2762B;
  --ok:#1F9D6B;
  --warn:#C9453A;
  --info:#3C6E9F;
  --bg:#F4F6F5;
  --surface:#FFFFFF;
  --panel:#0F1A1F;
  --panel-soft:#16242B;
  --text:#1B2426;
  --muted:#5B6A6E;
  --line:rgba(15,26,31,.08);
  --line-strong:rgba(15,26,31,.14);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:72px;
  --radius-card:14px; --radius-btn:10px; --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-soft:0 8px 28px rgba(15,26,31,.08);
  --shadow-lift:0 16px 40px rgba(15,26,31,.13);
  --glow:0 0 0 4px rgba(14,124,134,.12), 0 12px 32px rgba(14,124,134,.28);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.85;
  font-weight:400;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;margin:0;letter-spacing:.01em;}
p{margin:0;}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,monospace;letter-spacing:.02em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,246,245,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line-strong);box-shadow:0 6px 20px rgba(15,26,31,.06);}
.header-inner{
  display:flex;align-items:center;gap:var(--space-4);
  padding:14px 0;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,#1F5FA8 55%,#2A3C8F 100%);
  color:#fff;font-weight:700;font-size:1.05rem;
  box-shadow:0 6px 18px rgba(14,124,134,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:1.06rem;font-weight:700;letter-spacing:.01em;}
.brand-text span{font-size:.7rem;color:var(--muted);letter-spacing:.16em;text-transform:uppercase;}
.nav-cards{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:6px;margin:0 4px;
  box-shadow:var(--shadow-soft);
  overflow-x:auto;scrollbar-width:none;
}
.nav-cards::-webkit-scrollbar{display:none;}
.nav-card{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:10px;
  font-size:.92rem;color:var(--muted);white-space:nowrap;
  border-bottom:2px solid transparent;
}
.nav-card i{font-size:.9rem;color:var(--brand);opacity:.85;}
.nav-card:hover{background:rgba(14,124,134,.08);color:var(--brand-strong);transform:translateY(-2px);border-bottom-color:var(--brand);}
.nav-card.is-active{background:rgba(14,124,134,.12);color:var(--brand-strong);font-weight:700;border-bottom-color:var(--brand);}
.nav-card .dot{
  position:absolute;top:-6px;right:-4px;
  background:var(--accent);color:#fff;font-size:.62rem;font-style:normal;
  padding:1px 6px;border-radius:var(--radius-pill);font-weight:700;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-btn);
  font-size:.94rem;font-weight:700;white-space:nowrap;
  transition:all .24s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(14,124,134,.24);}
.btn-primary:hover{background:var(--brand-strong);box-shadow:var(--glow);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-strong);border:1px solid var(--line-strong);}
.btn-ghost:hover{background:rgba(14,124,134,.08);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 15px;font-size:.88rem;}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-strong);
  align-items:center;justify-content:center;font-size:1.05rem;
  box-shadow:var(--shadow-soft);
}
.mobile-drawer{
  display:none;flex-direction:column;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;margin-bottom:14px;box-shadow:var(--shadow-soft);
}
.mobile-drawer.open{display:flex;}
.mobile-drawer .nav-card{justify-content:flex-start;font-size:.95rem;}

/* ============ BREADCRUMB ============ */
.crumb-bar{padding:22px 0 6px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(15,26,31,.28);}
.crumb .current{color:var(--text);font-weight:700;}

/* ============ ARTICLE HEAD ============ */
.article-hero{padding:var(--space-4) 0 var(--space-7);}
.hero-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  padding:36px 40px;
  position:relative;
  overflow:hidden;
}
.hero-card::after{
  content:"";position:absolute;inset:auto -60px -90px auto;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(14,124,134,.14),transparent 68%);
  pointer-events:none;
}
.article-title{
  font-size:clamp(1.7rem,3.2vw,2.5rem);
  font-weight:700;line-height:1.28;
  max-width:900px;
  position:relative;z-index:1;
}
.title-rule{width:64px;height:4px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent));margin:20px 0 18px;}
.article-lead{
  max-width:820px;color:var(--muted);font-size:.98rem;
  position:relative;z-index:1;
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:24px;padding-top:20px;border-top:1px dashed var(--line-strong);
  position:relative;z-index:1;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:.78rem;font-weight:700;
  background:rgba(14,124,134,.1);color:var(--brand-strong);
  border:1px solid rgba(14,124,134,.18);
}
.badge.accent{background:rgba(226,118,43,.12);color:#B85B16;border-color:rgba(226,118,43,.22);}
.badge.ok{background:rgba(31,157,107,.12);color:#15805A;border-color:rgba(31,157,107,.22);}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-size:.84rem;color:var(--muted);}
.meta-item i{color:var(--brand);font-size:.82rem;}

/* ============ ARTICLE BODY ============ */
.article-wrap{padding-bottom:var(--space-8);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:var(--space-5);
  align-items:start;
}
.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  padding:44px 52px;
  max-width:820px;
}
.article-body h2{
  font-size:clamp(1.24rem,2vw,1.5rem);
  margin:2.2em 0 .9em;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:999px;
  background:linear-gradient(180deg,var(--brand),var(--brand-light));
}
.article-body h3{font-size:1.12rem;margin:1.8em 0 .7em;color:var(--brand-strong);}
.article-body p{margin:0 0 1.25em;line-height:1.9;color:#243033;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin-bottom:.7em;line-height:1.9;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.article-body ol{counter-reset:num;}
.article-body ol li{counter-increment:num;}
.article-body ol li::before{
  content:counter(num);
  position:absolute;left:0;top:.35em;
  width:16px;height:16px;border-radius:50%;
  background:rgba(14,124,134,.12);color:var(--brand-strong);
  font-size:.68rem;font-weight:700;display:grid;place-items:center;
  font-family:"JetBrains Mono",monospace;
}
.article-body img{border-radius:12px;margin:1.6em 0 .7em;box-shadow:var(--shadow-soft);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  border-left:3px solid var(--accent);
  background:rgba(226,118,43,.06);
  border-radius:0 12px 12px 0;
  color:#3B4548;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--brand-strong);border-bottom:1px solid rgba(14,124,134,.35);}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.92rem;}
.article-body th,.article-body td{border:1px solid var(--line-strong);padding:10px 14px;text-align:left;}
.article-body th{background:rgba(14,124,134,.06);font-weight:700;}
.article-body pre{
  background:var(--panel);color:#E8EDEC;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-family:"JetBrains Mono",monospace;font-size:.86rem;line-height:1.7;margin:1.6em 0;
}
.article-body code{
  font-family:"JetBrains Mono",monospace;font-size:.86em;
  background:rgba(14,124,134,.1);color:var(--brand-strong);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px dashed var(--line-strong);margin:2.4em 0;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:.9rem;color:var(--muted);margin-top:8px;}

/* ============ SIDEBAR ============ */
.side-col{display:flex;flex-direction:column;gap:var(--space-4);position:sticky;top:96px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);padding:22px;
}
.side-title{font-size:1rem;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--accent);}
.side-list li{border-bottom:1px dashed var(--line-strong);padding:11px 0;}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--muted);}
.side-list a:hover{color:var(--brand-strong);}
.side-list .idx{font-family:"JetBrains Mono",monospace;font-size:.78rem;color:var(--accent);font-weight:700;padding-top:3px;}
.side-note{font-size:.86rem;color:var(--muted);line-height:1.8;}
.side-cta{
  background:linear-gradient(150deg,var(--panel) 0%,#16242B 60%,#123138 100%);
  border:none;color:#E8EDEC;
}
.side-cta .side-title{color:#fff;}
.side-cta p{font-size:.87rem;color:rgba(232,237,236,.78);margin-bottom:16px;line-height:1.8;}
.side-cta .btn{width:100%;}

/* ============ 返回 / 相关推荐 ============ */
.back-row{display:flex;justify-content:center;padding:var(--space-6) 0 var(--space-7);}
.related-section{padding-bottom:var(--space-7);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:24px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(1.4rem,2.4vw,1.9rem);}
.section-head .sub{color:var(--muted);font-size:.9rem;margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-4);}
.related-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-soft);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(14,124,134,.45);box-shadow:var(--shadow-lift);}
.related-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel);}
.related-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.related-card:hover .related-cover img{transform:scale(1.06);}
.related-cover .tag{
  position:absolute;left:12px;top:12px;
  background:rgba(15,26,31,.72);color:#fff;font-size:.72rem;font-weight:700;
  padding:4px 10px;border-radius:var(--radius-pill);backdrop-filter:blur(6px);
}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{font-size:1rem;line-height:1.5;}
.related-card:hover h3{color:var(--brand-strong);}
.related-body p{font-size:.87rem;color:var(--muted);line-height:1.75;}
.related-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--muted);}
.related-foot .go{color:var(--brand-strong);font-weight:700;}

/* ============ CTA PANEL ============ */
.cta-section{padding-bottom:var(--space-8);}
.cta-panel{
  background:linear-gradient(150deg,var(--panel) 0%,#16242B 55%,#123138 100%);
  border-radius:20px;padding:56px 40px;text-align:center;color:#E8EDEC;
  position:relative;overflow:hidden;
  box-shadow:0 24px 60px rgba(15,26,31,.28);
}
.cta-panel::before{
  content:"";position:absolute;inset:-40% -10% auto auto;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(14,124,134,.35),transparent 65%);
}
.cta-panel::after{
  content:"";position:absolute;left:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(226,118,43,.22),transparent 68%);
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{font-size:clamp(1.5rem,2.8vw,2.1rem);color:#fff;}
.cta-panel p{max-width:640px;margin:16px auto 26px;color:rgba(232,237,236,.8);font-size:.96rem;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-panel .btn-ghost{color:#E8EDEC;border-color:rgba(255,255,255,.28);}
.cta-panel .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);}
.cta-note{margin-top:18px;font-size:.82rem;color:rgba(232,237,236,.6);}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:64px 28px;
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--radius-card);
}
.empty-state i{font-size:2rem;color:var(--brand);opacity:.75;}
.empty-state h2{margin:18px 0 10px;font-size:1.3rem;}
.empty-state p{color:var(--muted);margin-bottom:22px;font-size:.94rem;}

/* ============ FOOTER ============ */
.site-footer{background:var(--panel);color:#E8EDEC;padding:var(--space-8) 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--space-6);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand),#2A3C8F);}
.footer-brand strong{font-size:1.08rem;color:#fff;}
.footer-about{font-size:.88rem;color:rgba(232,237,236,.7);line-height:1.85;max-width:340px;}
.footer-title{font-size:.95rem;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:.88rem;color:rgba(232,237,236,.72);}
.footer-links a:hover{color:var(--accent);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:.86rem;color:rgba(232,237,236,.7);}
.footer-contact span{color:#fff;}
.footer-bottom{
  margin-top:var(--space-7);padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(232,237,236,.56);
}

/* ============ 浮标 ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 20px;border-radius:var(--radius-pill);
  background:var(--brand);color:#fff;font-weight:700;font-size:.92rem;
  box-shadow:0 12px 30px rgba(14,124,134,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .3s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--brand-strong);box-shadow:var(--glow);}
.back-top{
  position:fixed;right:24px;bottom:92px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--surface);color:var(--brand-strong);
  border:1px solid var(--line-strong);box-shadow:var(--shadow-soft);
  display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .3s var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 270px;}
}
@media (max-width:1024px){
  .nav-cards .nav-card span{font-size:.88rem;}
  .header-actions .btn-ghost{display:none;}
  .article-layout{grid-template-columns:1fr;}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-col > *{flex:1 1 300px;}
  .article-body{padding:36px 32px;max-width:none;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:768px){
  body{font-size:.95rem;}
  .container{padding:0 18px;}
  .nav-cards{display:none;}
  .header-actions .btn-primary{display:none;}
  .hamburger{display:inline-flex;}
  .hero-card{padding:26px 22px;}
  .article-body{padding:28px 20px;}
  .article-body h2{margin-top:1.8em;}
  .cta-panel{padding:42px 22px;}
  .cta-actions .btn{width:100%;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-cta{right:14px;bottom:14px;padding:12px 16px;font-size:.86rem;}
  .back-top{right:14px;bottom:76px;width:42px;height:42px;}
  .meta-bar{gap:10px;}
}
@media (max-width:520px){
  .article-title{font-size:1.5rem;}
  .side-col > *{flex:1 1 100%;}
  .brand-text span{display:none;}
  .float-cta span{display:inline;}
}

/* roulang page: category1 */
:root{
    --brand:#0E7C86;
    --brand-strong:#0A5C66;
    --brand-soft:rgba(14,124,134,.08);
    --brand-line:rgba(14,124,134,.28);
    --accent:#E2762B;
    --success:#1F9D6B;
    --warn:#C9453A;
    --info:#3C6E9F;
    --bg:#F4F6F5;
    --surface:#FFFFFF;
    --panel:#0F1A1F;
    --panel-text:#E8EDEC;
    --panel-line:rgba(255,255,255,.12);
    --text:#1B2426;
    --text-muted:#5B6A6E;
    --border:rgba(15,26,31,.08);
    --border-strong:rgba(15,26,31,.16);
    --radius-card:14px;
    --radius-btn:10px;
    --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
    --space-5:24px; --space-6:32px; --space-7:48px; --space-8:72px;
    --ease:cubic-bezier(.22,.61,.36,1);
    --shadow-soft:0 6px 24px rgba(15,26,31,.07);
    --shadow-lift:0 14px 36px rgba(15,26,31,.12);
    --glow:0 0 24px rgba(14,124,134,.45);
    --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:110px}
  html body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  button,input,textarea,select{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  .mono{font-family:var(--font-mono);letter-spacing:.02em}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  ::selection{background:rgba(14,124,134,.18)}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(244,246,245,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 8px 26px rgba(15,26,31,.08)}

  .nav-panel{
    display:flex;align-items:center;gap:16px;
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:16px;
    box-shadow:var(--shadow-soft);
    padding:10px 14px;
    margin:12px 0;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:38px;height:38px;border-radius:11px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,#0E7C86,#1E5A87);
    color:#fff;font-weight:700;font-size:1.05rem;
    box-shadow:0 6px 16px rgba(14,124,134,.28);
  }
  .brand-text{font-weight:700;font-size:1.06rem;letter-spacing:.01em;color:var(--text)}

  .nav-cards{display:flex;align-items:center;gap:8px;margin-left:auto}
  .nav-card{
    position:relative;
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 14px;border-radius:11px;
    border:1px solid transparent;
    color:var(--text-muted);font-size:.92rem;font-weight:500;
    transition:all .25s var(--ease);
  }
  .nav-card i{color:var(--brand);font-size:.95rem}
  .nav-card:hover{
    background:var(--brand-soft);border-color:rgba(14,124,134,.18);
    color:var(--text);transform:translateY(-2px);
    box-shadow:0 8px 16px rgba(14,124,134,.12);
  }
  .nav-card.is-active{
    background:var(--brand-soft);border-color:var(--brand-line);
    color:var(--brand-strong);
    box-shadow:inset 0 -2px 0 var(--brand);
  }
  .nav-card .dot{
    font-style:normal;font-size:.66rem;line-height:1;
    padding:3px 6px;border-radius:999px;
    background:rgba(226,118,43,.14);color:var(--accent);font-weight:700;
  }
  .nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}

  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:11px;
    border:1px solid var(--border);background:var(--surface);
    color:var(--brand-strong);margin-left:auto;
    align-items:center;justify-content:center;font-size:1rem;
  }
  .nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand-line)}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 20px;border-radius:var(--radius-btn);
    font-weight:600;font-size:.94rem;line-height:1.4;
    border:1px solid transparent;white-space:nowrap;cursor:pointer;
    transition:all .25s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(14,124,134,.24)}
  .btn-primary:hover{background:var(--brand-strong);box-shadow:var(--glow);transform:translateY(-2px)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(14,124,134,.24)}
  .btn-outline{background:var(--surface);border-color:var(--border-strong);color:var(--text)}
  .btn-outline:hover{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand-strong);transform:translateY(-2px)}
  .btn-ghost{background:transparent;color:var(--brand-strong);padding:10px 14px}
  .btn-ghost:hover{background:var(--brand-soft)}
  .btn-light{background:#fff;color:var(--brand-strong)}
  .btn-light:hover{box-shadow:0 0 26px rgba(255,255,255,.36);transform:translateY(-2px)}
  .btn-sm{padding:9px 15px;font-size:.86rem}
  .btn-block{width:100%}

  /* ---------- Pills ---------- */
  .pill{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;
    font-size:.78rem;font-weight:600;letter-spacing:.04em;
    background:var(--brand-soft);color:var(--brand-strong);
    border:1px solid rgba(14,124,134,.18);
  }
  .pill-accent{background:rgba(226,118,43,.12);color:#B65C1B;border-color:rgba(226,118,43,.22)}
  .pill-dark{background:rgba(255,255,255,.08);color:var(--panel-text);border-color:var(--panel-line)}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--panel);color:var(--panel-text);padding:52px 0 60px}
  .page-hero-bg{
    position:absolute;inset:0;background-size:cover;background-position:center;
    opacity:.30;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;z-index:1;
    background:
      repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
      repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 44px),
      linear-gradient(118deg,rgba(15,26,31,.94) 0%,rgba(10,92,102,.78) 62%,rgba(15,26,31,.86) 100%);
  }
  .page-hero-inner{position:relative;z-index:2;max-width:820px}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;color:rgba(232,237,236,.66);margin-bottom:18px}
  .crumbs a:hover{color:#fff}
  .crumbs .sep{opacity:.5}
  .crumbs .current{color:#fff;font-weight:600}
  .hero-title{font-size:clamp(1.9rem,3.6vw,2.9rem);font-weight:700;color:#fff;margin:16px 0 0;letter-spacing:.01em}
  .hero-sub{margin-top:16px;font-size:1.03rem;color:rgba(232,237,236,.8);max-width:660px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:38px;max-width:780px}
  .stat{
    background:rgba(255,255,255,.06);border:1px solid var(--panel-line);
    border-radius:var(--radius-card);padding:16px 18px;
    backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
    transition:all .3s var(--ease);
  }
  .stat:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
  .stat-num{font-family:var(--font-mono);font-size:1.55rem;font-weight:700;color:#fff;line-height:1.2}
  .stat-num small{font-size:.78rem;font-weight:500;color:rgba(232,237,236,.7);margin-left:4px}
  .stat-label{font-size:.85rem;color:rgba(232,237,236,.7);margin-top:6px}

  /* ---------- Anchor bar ---------- */
  .anchor-bar{
    display:flex;gap:10px;overflow-x:auto;
    padding:20px 0 4px;scrollbar-width:none;
  }
  .anchor-bar::-webkit-scrollbar{display:none}
  .anchor-pill{
    padding:8px 16px;border-radius:999px;white-space:nowrap;
    border:1px solid var(--border);background:var(--surface);
    font-size:.9rem;color:var(--text-muted);
    transition:all .25s var(--ease);
  }
  .anchor-pill:hover,.anchor-pill.is-active{
    background:var(--brand);border-color:var(--brand);color:#fff;
    box-shadow:0 8px 18px rgba(14,124,134,.22);
  }

  /* ---------- Section heads ---------- */
  .section-head{max-width:740px;margin-bottom:36px}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.05rem);font-weight:700;color:var(--text);margin-top:14px}
  .section-desc{margin-top:12px;color:var(--text-muted);font-size:.98rem}
  .head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
  .head-link{font-size:.92rem;color:var(--brand-strong);font-weight:600;display:inline-flex;align-items:center;gap:6px}
  .head-link:hover{color:var(--accent)}

  /* ---------- Grid ---------- */
  .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
  .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

  /* ---------- Cards ---------- */
  .card{
    display:flex;flex-direction:column;height:100%;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-card);overflow:hidden;
    box-shadow:var(--shadow-soft);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift);border-color:var(--brand-line)}
  .card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E8EDEC}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
  .card:hover .card-cover img{transform:scale(1.06)}
  .card-cover .cover-tag{
    position:absolute;left:12px;top:12px;
    padding:4px 10px;border-radius:999px;font-size:.74rem;font-weight:700;
    background:rgba(15,26,31,.72);color:#fff;letter-spacing:.04em;
    backdrop-filter:blur(4px);
  }
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-title{font-size:1.08rem;font-weight:700;color:var(--text)}
  .card-text{color:var(--text-muted);font-size:.93rem}
  .card-foot{margin-top:auto;padding-top:8px;display:flex;align-items:center;justify-content:space-between;gap:12px}
  .card-link{font-size:.88rem;font-weight:600;color:var(--brand-strong);display:inline-flex;align-items:center;gap:6px}
  .card-link i{transition:transform .25s var(--ease)}
  .card:hover .card-link i{transform:translateX(4px)}
  .card-meta{font-family:var(--font-mono);font-size:.78rem;color:var(--text-muted)}

  /* ---------- Rail layout ---------- */
  .rail-layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:32px;align-items:start}
  .rail-nav{
    position:sticky;top:112px;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-card);box-shadow:var(--shadow-soft);
    padding:16px;
  }
  .rail-title{font-size:.82rem;font-weight:700;letter-spacing:.08em;color:var(--text-muted);padding:4px 12px 12px}
  .rail-nav a{
    display:flex;align-items:center;gap:10px;
    padding:11px 12px;border-radius:10px;
    font-size:.93rem;color:var(--text-muted);
    border-left:3px solid transparent;
    transition:all .25s var(--ease);
  }
  .rail-nav a i{color:var(--brand);font-size:.85rem;width:16px;text-align:center}
  .rail-nav a:hover{background:var(--brand-soft);color:var(--brand-strong);border-left-color:var(--brand)}
  .rail-nav a.is-active{background:var(--brand-soft);color:var(--brand-strong);border-left-color:var(--brand);font-weight:600}

  .scene-card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-card);padding:22px;
    box-shadow:var(--shadow-soft);height:100%;
    display:flex;flex-direction:column;gap:10px;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .scene-card:hover{transform:translateY(-5px);border-color:var(--brand-line);box-shadow:var(--shadow-lift)}
  .icon-block{
    width:44px;height:44px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-strong);font-size:1.05rem;
    border:1px solid rgba(14,124,134,.16);
  }
  .icon-block.accent{background:rgba(226,118,43,.12);color:#B65C1B;border-color:rgba(226,118,43,.2)}
  .scene-title{font-size:1.05rem;font-weight:700}
  .scene-text{color:var(--text-muted);font-size:.93rem}

  /* ---------- Steps ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
  .step{
    position:relative;background:var(--surface);
    border:1px solid var(--border);border-radius:var(--radius-card);
    padding:24px 22px;box-shadow:var(--shadow-soft);height:100%;
    transition:transform .3s var(--ease),border-color .3s var(--ease);
  }
  .step:hover{transform:translateY(-5px);border-color:var(--brand-line)}
  .step::before{
    content:"";position:absolute;left:22px;top:0;width:36px;height:3px;
    background:var(--brand);border-radius:0 0 4px 4px;
  }
  .step-num{font-family:var(--font-mono);font-size:.82rem;font-weight:700;color:var(--accent);letter-spacing:.1em}
  .step-title{font-size:1.05rem;font-weight:700;margin-top:10px}
  .step-text{color:var(--text-muted);font-size:.92rem;margin-top:8px}

  /* ---------- Dark panel ---------- */
  .panel-dark{
    position:relative;overflow:hidden;
    background:var(--panel);color:var(--panel-text);
    border-radius:20px;padding:48px;
  }
  .panel-dark::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(600px 300px at 88% 0%,rgba(14,124,134,.35),transparent 70%);
    pointer-events:none;
  }
  .panel-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
  .panel-title{font-size:clamp(1.4rem,2.3vw,1.9rem);font-weight:700;color:#fff;margin-top:16px}
  .panel-text{color:rgba(232,237,236,.78);margin-top:14px;font-size:.97rem}
  .panel-list{margin-top:22px;display:grid;gap:12px}
  .panel-list li{display:flex;gap:10px;align-items:flex-start;font-size:.94rem;color:rgba(232,237,236,.86);line-height:1.7}
  .panel-list i{color:#63C6CE;font-size:.85rem;margin-top:6px}
  .panel-dark .btn{margin-top:28px}
  .panel-media{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--panel-line)}
  .panel-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
  .media-badge{
    position:absolute;left:14px;bottom:14px;
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;border-radius:999px;
    background:rgba(15,26,31,.78);border:1px solid var(--panel-line);
    color:#fff;font-size:.82rem;backdrop-filter:blur(6px);
  }
  .media-badge .mono{color:#7FD3DA;font-weight:700}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;gap:12px;max-width:900px}
  .faq-item{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-card);overflow:hidden;
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .faq-item:hover{border-color:var(--brand-line);box-shadow:var(--shadow-soft)}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;font-weight:600;font-size:1rem;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;
    width:26px;height:26px;border-radius:50%;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-strong);
    font-size:1rem;line-height:1;transition:all .25s var(--ease);
  }
  .faq-item[open] summary::after{content:"–";background:var(--brand);color:#fff}
  .faq-item[open] summary{color:var(--brand-strong)}
  .faq-body{padding:0 20px 20px;color:var(--text-muted);font-size:.94rem}

  /* ---------- CTA + Form ---------- */
  .cta-panel{
    position:relative;overflow:hidden;
    background:linear-gradient(135deg,#0F1A1F 0%,#0A4E57 100%);
    color:var(--panel-text);border-radius:20px;padding:52px 48px;
  }
  .cta-panel::after{
    content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(226,118,43,.26),transparent 68%);
  }
  .cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
  .cta-title{font-size:clamp(1.4rem,2.4vw,1.95rem);font-weight:700;color:#fff;margin-top:16px}
  .cta-text{color:rgba(232,237,236,.78);margin-top:14px;font-size:.97rem}
  .cta-points{margin-top:24px;display:grid;gap:12px}
  .cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:.93rem;color:rgba(232,237,236,.86)}
  .cta-points i{color:#7FD3DA;font-size:.85rem;margin-top:6px}

  .consult-form{
    background:rgba(255,255,255,.06);border:1px solid var(--panel-line);
    border-radius:16px;padding:24px;backdrop-filter:blur(6px);
    display:grid;gap:16px;
  }
  .form-row{display:grid;gap:8px}
  .form-row label{font-size:.86rem;color:rgba(232,237,236,.8);font-weight:600}
  .form-row input,.form-row textarea{
    width:100%;padding:12px 14px;border-radius:var(--radius-btn);
    background:rgba(15,26,31,.42);border:1px solid var(--panel-line);
    color:#fff;font-size:.94rem;transition:all .25s var(--ease);
    -webkit-appearance:none;appearance:none;
  }
  .form-row input::placeholder,.form-row textarea::placeholder{color:rgba(232,237,236,.42)}
  .form-row input:hover,.form-row textarea:hover{border-color:rgba(255,255,255,.26)}
  .form-row input:focus,.form-row textarea:focus{
    outline:none;border-color:#63C6CE;background:rgba(15,26,31,.62);
    box-shadow:0 0 0 3px rgba(14,124,134,.28);
  }
  .form-note{font-size:.84rem;color:rgba(232,237,236,.62)}
  .form-note.is-ok{color:#7FE0B4;font-weight:600}

  /* ---------- Float CTA ---------- */
  .float-cta{
    position:fixed;right:22px;bottom:22px;z-index:70;
    display:inline-flex;align-items:center;gap:10px;
    padding:14px 22px;border-radius:999px;
    background:var(--brand);color:#fff;font-weight:600;font-size:.94rem;
    box-shadow:0 12px 30px rgba(14,124,134,.36);
    transition:all .3s var(--ease);
  }
  .float-cta:hover{background:var(--brand-strong);box-shadow:var(--glow);transform:translateY(-3px)}
  .float-cta i{font-size:1rem}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--panel);color:var(--panel-text);padding:56px 0 24px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand strong{font-size:1.06rem;color:#fff}
  .footer-about{color:rgba(232,237,236,.68);font-size:.92rem;max-width:320px}
  .footer-title{font-size:.94rem;font-weight:700;color:#fff;margin-bottom:16px}
  .footer-links{display:grid;gap:10px}
  .footer-links a{color:rgba(232,237,236,.72);font-size:.92rem;transition:color .25s var(--ease),transform .25s var(--ease)}
  .footer-links a:hover{color:var(--accent);transform:translateX(3px)}
  .footer-contact{display:grid;gap:10px;color:rgba(232,237,236,.72);font-size:.92rem}
  .footer-contact span{color:#fff}
  .footer-bottom{
    margin-top:40px;padding-top:20px;
    border-top:1px solid var(--panel-line);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    color:rgba(232,237,236,.55);font-size:.85rem;
  }

  /* ---------- Mobile drawer ---------- */
  .drawer-backdrop{
    position:fixed;inset:0;background:rgba(15,26,31,.5);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:80;
  }
  .drawer-backdrop.is-open{opacity:1;visibility:visible}
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:min(84vw,330px);background:var(--surface);
    padding:22px 20px;overflow-y:auto;
    transform:translateX(102%);
    transition:transform .35s var(--ease);
    box-shadow:-12px 0 34px rgba(15,26,31,.18);
    display:flex;flex-direction:column;gap:20px;
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;gap:10px}
  .drawer-head strong{font-size:1.02rem}
  .drawer-close{
    margin-left:auto;width:38px;height:38px;border-radius:10px;
    border:1px solid var(--border);color:var(--text-muted);
    display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-close:hover{background:var(--brand-soft);color:var(--brand-strong)}
  .drawer-nav{display:grid;gap:8px}
  .drawer-nav a{
    display:flex;align-items:center;gap:12px;
    padding:13px 14px;border-radius:12px;
    border:1px solid var(--border);color:var(--text-muted);font-size:.95rem;
    transition:all .25s var(--ease);
  }
  .drawer-nav a i{color:var(--brand)}
  .drawer-nav a:hover,.drawer-nav a.is-active{
    background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand-strong);
  }
  .drawer-cta{margin-top:auto}

  /* ---------- Responsive ---------- */
  @media (max-width:1100px){
    .nav-cards{gap:6px}
    .nav-card{padding:8px 11px;font-size:.88rem}
    .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
    .panel-grid{grid-template-columns:1fr;gap:32px}
    .cta-grid{grid-template-columns:1fr;gap:32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  }
  @media (max-width:1024px){
    .nav-cards,.nav-actions{display:none}
    .nav-toggle{display:inline-flex}
    .rail-layout{grid-template-columns:1fr;gap:24px}
    .rail-nav{position:static}
    .rail-nav{display:flex;flex-wrap:wrap;gap:8px;padding:12px}
    .rail-title{width:100%;padding:2px 4px 6px}
    .rail-nav a{border-left:0;border:1px solid var(--border);border-radius:999px;padding:8px 14px;font-size:.88rem}
    .rail-nav a.is-active,.rail-nav a:hover{border-color:var(--brand-line)}
  }
  @media (max-width:768px){
    .section{padding:52px 0}
    .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
    .hero-stats{grid-template-columns:1fr;max-width:100%}
    .panel-dark{padding:28px 22px;border-radius:16px}
    .cta-panel{padding:32px 22px;border-radius:16px}
    .page-hero{padding:38px 0 46px}
    .hero-sub{font-size:.98rem}
    .footer-grid{grid-template-columns:1fr;gap:26px}
    .float-cta{padding:13px 18px;font-size:.9rem}
  }
  @media (max-width:520px){
    html body{font-size:15px}
    .container{padding:0 16px}
    .nav-panel{padding:8px 10px;gap:10px}
    .brand-text{font-size:1rem}
    .brand-mark{width:34px;height:34px;border-radius:10px}
    .hero-actions .btn{flex:1 1 auto}
    .steps{grid-template-columns:1fr}
    .float-cta{right:14px;bottom:14px;padding:12px;border-radius:50%;width:52px;height:52px;justify-content:center}
    .float-cta span{display:none}
    .float-cta i{font-size:1.1rem}
  }

/* roulang page: category2 */
:root{
    --brand:#0E7C86;
    --brand-strong:#0A5C66;
    --brand-soft:#E4F1F1;
    --accent:#E2762B;
    --accent-soft:#FBEBDD;
    --success:#1F9D6B;
    --warn:#C9453A;
    --info:#3C6E9F;
    --bg:#F4F6F5;
    --surface:#FFFFFF;
    --panel:#0F1A1F;
    --panel-text:#E8EDEC;
    --text:#1B2426;
    --text-muted:#5B6A6E;
    --line:rgba(15,26,31,.08);
    --line-strong:rgba(15,26,31,.16);
    --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
    --space-5:24px; --space-6:32px; --space-7:48px; --space-8:72px;
    --radius-card:14px; --radius-btn:10px; --radius-pill:999px;
    --ease:cubic-bezier(.22,.61,.36,1);
    --shadow-soft:0 6px 24px rgba(15,26,31,.08);
    --shadow-lift:0 14px 34px rgba(15,26,31,.12);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;background:var(--bg);color:var(--text);
    font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;line-height:1.85;font-weight:400;
    text-align:left;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);}
  button,input,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
  p{margin:0;}
  .mono{font-family:"JetBrains Mono","SFMono-Regular",Consolas,monospace;letter-spacing:.4px;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
  .skip-link:focus{left:0;}
  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(244,246,245,.86);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(15,26,31,.06);}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-5);padding:14px 0;}
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .brand-mark{
    width:42px;height:42px;border-radius:12px;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,var(--brand) 0%,#124A6E 100%);
    color:#fff;font-weight:700;font-size:1.15rem;letter-spacing:.5px;
    box-shadow:0 6px 16px rgba(14,124,134,.32);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text strong{font-size:1.09rem;font-weight:700;color:var(--text);}
  .brand-text span{font-size:.72rem;color:var(--text-muted);letter-spacing:1.4px;}

  .nav-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);padding:8px;display:flex;align-items:center;gap:8px;
  }
  .nav-cards{display:flex;align-items:center;gap:6px;}
  .nav-card{
    position:relative;display:flex;align-items:center;gap:8px;
    padding:9px 15px;border-radius:10px;font-size:.93rem;color:var(--text-muted);
    border:1px solid transparent;background:transparent;white-space:nowrap;
  }
  .nav-card i{font-size:.9rem;color:var(--brand);opacity:.75;}
  .nav-card:hover{background:var(--brand-soft);color:var(--brand-strong);transform:translateY(-2px);}
  .nav-card:hover i{opacity:1;}
  .nav-card.is-active{
    background:var(--brand-soft);color:var(--brand-strong);font-weight:700;
    border-color:rgba(14,124,134,.28);box-shadow:inset 0 -2px 0 var(--brand);
  }
  .nav-card.is-active i{opacity:1;}
  .nav-card .dot{
    font-style:normal;font-size:.64rem;line-height:1;padding:3px 6px;border-radius:var(--radius-pill);
    background:var(--accent);color:#fff;font-weight:700;letter-spacing:.5px;
  }
  .header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 20px;border-radius:var(--radius-btn);font-size:.94rem;font-weight:700;
    border:1px solid transparent;cursor:pointer;transition:all .25s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(14,124,134,.24);}
  .btn-primary:hover{background:var(--brand-strong);box-shadow:var(--shadow-glow,0 0 24px rgba(14,124,134,.35));transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(14,124,134,.28);}
  .btn-ghost{background:transparent;color:var(--brand-strong);border-color:var(--line-strong);}
  .btn-ghost:hover{background:rgba(14,124,134,.08);border-color:rgba(14,124,134,.4);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-sm{padding:9px 16px;font-size:.88rem;}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#cf6620;box-shadow:0 0 24px rgba(226,118,43,.35);transform:translateY(-1px);}
  .btn-onDark{background:var(--brand);color:#fff;}
  .btn-onDark:hover{background:#12A0AB;box-shadow:0 0 32px rgba(18,160,171,.55);transform:translateY(-1px);}
  .btn-outlineDark{background:transparent;color:var(--panel-text);border-color:rgba(255,255,255,.28);}
  .btn-outlineDark:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:var(--surface);color:var(--brand-strong);cursor:pointer;box-shadow:var(--shadow-soft);
  }
  .nav-toggle:hover{background:var(--brand-soft);}
  .nav-drawer{
    display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-lift);padding:14px;margin-bottom:14px;
  }
  .nav-drawer.is-open{display:block;}
  .nav-drawer .nav-cards{flex-direction:column;align-items:stretch;gap:8px;}
  .nav-drawer .nav-card{justify-content:flex-start;padding:13px 15px;border:1px solid var(--line);}
  .nav-drawer .drawer-cta{margin-top:12px;display:grid;gap:10px;}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;overflow:hidden;padding:var(--space-7) 0 var(--space-8);}
  .hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.16;}
  .hero-veil{position:absolute;inset:0;background:linear-gradient(115deg,rgba(10,92,102,.94) 0%,rgba(14,124,134,.82) 42%,rgba(18,74,110,.9) 100%);}
  .hero-grid-lines{position:absolute;inset:0;opacity:.16;background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);background-size:46px 46px;}
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:var(--space-7);align-items:center;}
  .crumb{display:flex;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.78);margin-bottom:16px;}
  .crumb a:hover{color:#fff;}
  .crumb .sep{opacity:.6;}
  .crumb .current{color:#fff;font-weight:700;}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
    color:#fff;font-size:.8rem;font-weight:700;letter-spacing:.6px;margin-bottom:18px;
  }
  .page-hero h1{font-size:clamp(2rem,4vw,3.25rem);color:#fff;margin-bottom:16px;}
  .hero-sub{color:rgba(255,255,255,.9);font-size:1.03rem;max-width:620px;line-height:1.85;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-stat{
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:12px;
    padding:12px 18px;min-width:132px;backdrop-filter:blur(6px);
  }
  .hero-stat b{display:block;font-size:1.35rem;color:#fff;font-family:"JetBrains Mono",monospace;}
  .hero-stat span{font-size:.78rem;color:rgba(255,255,255,.82);}

  .hero-visual{position:relative;}
  .hero-shot{
    border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.28);
    box-shadow:0 24px 60px rgba(6,26,32,.42);background:rgba(255,255,255,.08);
  }
  .hero-shot img{width:100%;height:330px;object-fit:cover;}
  .float-card{
    position:absolute;left:-16px;bottom:-22px;background:var(--surface);border:1px solid var(--line);
    border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-lift);max-width:250px;
  }
  .float-card .tag{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:700;color:var(--brand-strong);background:var(--brand-soft);border-radius:var(--radius-pill);padding:3px 10px;margin-bottom:8px;}
  .float-card p{font-size:.85rem;color:var(--text-muted);line-height:1.7;}

  /* ---------- Filter pills ---------- */
  .filter-bar{
    position:sticky;top:72px;z-index:60;background:rgba(244,246,245,.94);
    backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:14px 0;
  }
  .pills{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
  .pill{
    display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:var(--radius-pill);
    background:var(--surface);border:1px solid var(--line);color:var(--text-muted);
    font-size:.9rem;box-shadow:0 2px 10px rgba(15,26,31,.04);
  }
  .pill i{font-size:.82rem;color:var(--brand);}
  .pill:hover{border-color:rgba(14,124,134,.4);color:var(--brand-strong);transform:translateY(-2px);}
  .pill.is-active{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 20px rgba(14,124,134,.28);}
  .pill.is-active i{color:#fff;}

  /* ---------- Sections ---------- */
  section{scroll-margin-top:150px;}
  .section{padding:var(--space-7) 0;}
  .section-head{max-width:760px;margin-bottom:var(--space-6);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;
    letter-spacing:1.4px;color:var(--brand-strong);text-transform:uppercase;margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}
  .section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:12px;}
  .section-head p{color:var(--text-muted);}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
  .section-head.center .eyebrow{justify-content:center;}

  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:rgba(14,124,134,.4);}

  /* quick start */
  .quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-5);}
  .quick-card{padding:24px;}
  .icon-box{
    width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-strong);font-size:1.1rem;margin-bottom:16px;
  }
  .quick-card h3{font-size:1.06rem;margin-bottom:8px;}
  .quick-card p{font-size:.9rem;color:var(--text-muted);line-height:1.8;}

  /* steps */
  .steps-wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--space-4);}
  .step{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 18px;position:relative;box-shadow:var(--shadow-soft);
  }
  .step:hover{border-color:rgba(14,124,134,.4);transform:translateY(-4px);}
  .step-num{
    font-family:"JetBrains Mono",monospace;font-size:.82rem;font-weight:700;color:#fff;
    background:var(--brand);border-radius:var(--radius-pill);padding:3px 10px;display:inline-block;margin-bottom:12px;
  }
  .step h3{font-size:1rem;margin-bottom:8px;}
  .step p{font-size:.86rem;color:var(--text-muted);line-height:1.78;}

  /* guide cards grid */
  .cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-5);}
  .guide-card{overflow:hidden;display:flex;flex-direction:column;}
  .guide-cover{position:relative;height:186px;overflow:hidden;border-radius:var(--radius-card) var(--radius-card) 0 0;}
  .guide-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
  .guide-card:hover .guide-cover img{transform:scale(1.05);}
  .guide-cover .badge{
    position:absolute;left:12px;top:12px;background:rgba(15,26,31,.72);color:#fff;
    font-size:.72rem;font-weight:700;padding:4px 11px;border-radius:var(--radius-pill);
    backdrop-filter:blur(4px);letter-spacing:.5px;
  }
  .guide-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .guide-body h3{font-size:1.08rem;}
  .guide-body p{font-size:.89rem;color:var(--text-muted);line-height:1.8;}
  .guide-meta{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;
    padding-top:14px;border-top:1px dashed var(--line-strong);font-size:.8rem;color:var(--text-muted);
  }
  .guide-meta .go{color:var(--brand-strong);font-weight:700;display:inline-flex;align-items:center;gap:6px;}
  .guide-card:hover .guide-meta .go{color:var(--accent);gap:10px;}

  /* spec strip */
  .spec-panel{
    background:var(--panel);border-radius:20px;padding:var(--space-7);
    display:grid;grid-template-columns:1fr 1fr;gap:var(--space-6);align-items:center;
    position:relative;overflow:hidden;
  }
  .spec-panel::after{
    content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
    background:radial-gradient(circle,rgba(14,124,134,.5),transparent 68%);
  }
  .spec-panel h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.95rem);margin-bottom:14px;}
  .spec-panel p{color:rgba(232,237,236,.78);font-size:.95rem;}
  .spec-list{position:relative;z-index:2;display:grid;gap:12px;}
  .spec-item{
    display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:14px 16px;
  }
  .spec-item i{color:var(--accent);margin-top:4px;}
  .spec-item b{color:#fff;display:block;font-size:.95rem;margin-bottom:3px;}
  .spec-item span{color:rgba(232,237,236,.72);font-size:.85rem;line-height:1.7;}

  /* check list */
  .check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4);}
  .check-item{
    display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-soft);
  }
  .check-item:hover{border-color:rgba(14,124,134,.4);transform:translateY(-3px);}
  .check-item .mark{
    width:30px;height:30px;flex-shrink:0;border-radius:9px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-strong);font-size:.8rem;
  }
  .check-item h3{font-size:.98rem;margin-bottom:6px;}
  .check-item p{font-size:.86rem;color:var(--text-muted);line-height:1.78;}

  /* faq */
  .faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);overflow:hidden;
  }
  .faq-item[open]{border-color:rgba(14,124,134,.42);box-shadow:var(--shadow-lift);}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;
    gap:16px;font-weight:700;font-size:1rem;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{background:rgba(14,124,134,.05);}
  .faq-item summary .chev{color:var(--brand);transition:transform .3s var(--ease);flex-shrink:0;}
  .faq-item[open] summary .chev{transform:rotate(180deg);}
  .faq-body{padding:0 22px 20px;color:var(--text-muted);font-size:.92rem;line-height:1.9;border-top:1px dashed var(--line-strong);padding-top:16px;}

  /* CTA */
  .cta-panel{
    background:linear-gradient(120deg,#0A5C66 0%,#0E7C86 48%,#124A6E 100%);
    border-radius:22px;padding:var(--space-8) var(--space-6);text-align:center;position:relative;overflow:hidden;
  }
  .cta-panel::before{
    content:"";position:absolute;inset:0;opacity:.14;
    background-image:linear-gradient(rgba(255,255,255,.4) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.4) 1px,transparent 1px);
    background-size:40px 40px;
  }
  .cta-panel > *{position:relative;z-index:2;}
  .cta-panel h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:14px;}
  .cta-panel p{color:rgba(255,255,255,.88);max-width:640px;margin:0 auto;}
  .cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px;}
  .cta-note{margin-top:18px;font-size:.82rem;color:rgba(255,255,255,.72);}

  /* floating cta */
  .float-cta{
    position:fixed;right:24px;bottom:26px;z-index:90;display:inline-flex;align-items:center;gap:10px;
    padding:13px 22px;border-radius:var(--radius-pill);background:var(--brand);color:#fff;font-weight:700;font-size:.92rem;
    box-shadow:0 12px 30px rgba(10,92,102,.34);opacity:0;transform:translateY(16px);pointer-events:none;
    transition:all .35s var(--ease);
  }
  .float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-cta:hover{background:var(--brand-strong);box-shadow:0 0 30px rgba(14,124,134,.6);}

  /* footer */
  .site-footer{background:var(--panel);color:var(--panel-text);padding:var(--space-8) 0 var(--space-5);margin-top:var(--space-8);}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--space-6);}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-brand .brand-mark{width:40px;height:40px;box-shadow:none;}
  .footer-brand strong{color:#fff;font-size:1.06rem;}
  .footer-about{color:rgba(232,237,236,.7);font-size:.88rem;line-height:1.85;max-width:320px;}
  .footer-title{color:#fff;font-size:.95rem;margin-bottom:16px;letter-spacing:.6px;}
  .footer-links{display:grid;gap:10px;}
  .footer-links a{color:rgba(232,237,236,.72);font-size:.88rem;}
  .footer-links a:hover{color:var(--accent);}
  .footer-contact{display:grid;gap:10px;font-size:.86rem;color:rgba(232,237,236,.72);}
  .footer-contact span{color:#fff;}
  .footer-bottom{
    margin-top:var(--space-7);padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.82rem;color:rgba(232,237,236,.6);
  }

  /* responsive */
  @media (max-width:1280px){
    .hero-inner{gap:var(--space-6);}
  }
  @media (max-width:1024px){
    .nav-panel{display:none;}
    .header-actions .btn-ghost{display:none;}
    .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
    .hero-inner{grid-template-columns:1fr;}
    .hero-shot img{height:280px;}
    .float-card{position:static;margin-top:16px;max-width:none;}
    .quick-grid{grid-template-columns:repeat(2,1fr);}
    .steps-wrap{grid-template-columns:repeat(3,1fr);}
    .cards-grid{grid-template-columns:repeat(2,1fr);}
    .spec-panel{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:768px){
    .container{padding:0 18px;}
    .section{padding:var(--space-6) 0;}
    .page-hero{padding:var(--space-6) 0 var(--space-7);}
    .quick-grid{grid-template-columns:1fr;}
    .steps-wrap{grid-template-columns:1fr 1fr;}
    .cards-grid{grid-template-columns:1fr;}
    .check-grid{grid-template-columns:1fr;}
    .filter-bar{top:66px;}
    .hero-stats{gap:10px;}
    .hero-stat{flex:1 1 40%;min-width:0;}
    .float-cta{right:16px;bottom:16px;padding:12px 16px;font-size:.85rem;}
  }
  @media (max-width:520px){
    .steps-wrap{grid-template-columns:1fr;}
    .brand-text span{display:none;}
    .footer-grid{grid-template-columns:1fr;}
    .cta-panel{padding:var(--space-7) var(--space-5);}
    .float-cta span{display:none;}
    .float-cta{padding:14px;border-radius:50%;}
  }