:root {
  --bg: #eef3f8;
  --bg-soft: #e3eaf1;
  --bg-alt: #dbe5ee;
  --surface: #ffffff;
  --surface-2: #f5f8fb;
  --text: #17212d;
  --muted: #61707e;
  --border: #d5dee8;
  --accent: #26c06b;
  --accent-2: #123c2b;
  --accent-soft: #e2f8eb;
  --header-bg: #1c2732;
  --header-text: #ffffff;
  --footer-bg: #101820;
  --footer-text: #ffffff;
  --shadow: 0 18px 40px rgba(0,0,0,.12);
  --radius: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,textarea,summary{font:inherit}
.container{width:min(100% - 32px,var(--container));margin:0 auto}
.skip-link{position:absolute;left:-999px;top:8px;z-index:2000;padding:10px 14px;background:#fff;color:#111;border-radius:10px;box-shadow:var(--shadow)}
.skip-link:focus{left:16px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:100;background:var(--header-bg);color:var(--header-text);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:18px}.brand{display:inline-flex;align-items:center;flex:0 0 auto}.brand-logo{width:136px;height:auto}.site-nav{display:flex;align-items:center;gap:20px;font-size:14px;flex:1 1 auto;justify-content:center}.site-nav a{opacity:.88}.site-nav a:hover,.site-nav a:focus-visible{opacity:1}.header-subtitle{font-size:14px;opacity:.8;padding:8px 12px;border:1px solid rgba(255,255,255,.14);border-radius:999px}
.header-cta{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 15px;border-radius:999px;background:var(--accent);color:#08311f;font-weight:700;white-space:nowrap}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:transparent;color:inherit;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}.menu-toggle span{width:18px;height:2px;background:currentColor;border-radius:99px}
.hero{position:relative;overflow:hidden;padding:72px 0 48px;background:linear-gradient(180deg,var(--bg-alt),var(--bg))}.hero::before{content:"";position:absolute;inset:-20% auto auto -10%;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.26),transparent 70%);filter:blur(10px);opacity:.8;pointer-events:none}.hero::after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.hero-inner{position:relative;z-index:1}.hero-centered .hero-copy{text-align:center;max-width:940px;margin:0 auto}.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:28px;align-items:center}.hero-grid.compact{grid-template-columns:minmax(0,1.14fr) minmax(280px,.86fr)}
.eyebrow{margin:0 0 12px;color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.hero h1{margin:0;line-height:1.05;letter-spacing:-.04em;font-size:clamp(34px,5vw,62px);max-width:11ch}.hero-centered h1{margin:0 auto;max-width:13ch}.lead{margin:16px 0 0;color:var(--muted);font-size:clamp(16px,1.4vw,18px);max-width:66ch}.hero-centered .lead{margin-left:auto;margin-right:auto}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.hero-centered .hero-actions{justify-content:center}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:transform .2s ease,background-color .2s ease,border-color .2s ease}.btn:hover,.btn:focus-visible{transform:translateY(-1px)}.btn-primary{background:var(--accent);color:#09311f}.btn-secondary{background:transparent;border-color:var(--border);color:var(--text)}.btn.ghost{background:var(--surface-2)}
.hero-meta,.hero-tags,.chip-row,.status-row,.help-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-meta span,.hero-tags span,.chip,.status-chip,.help-chip,.step-chip{display:inline-flex;align-items:center;justify-content:center;min-height:34px;padding:0 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--muted);font-size:13px}
.hero-copy p:last-child{margin-bottom:0}.hero-side{display:grid;gap:14px}.hero-card,.panel,.card,.tile,.note-card,.system-band,.step-card,.help-card,.window-mock,.phone-frame,.matrix-card,.settings-board,.feature-board,.preview-board{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:18px}.hero-card img,.hero-card figure,.preview-image{border-radius:14px;overflow:hidden}.hero-note,.panel-note,.card p,.tile p,.note-card p,.help-card p{margin:0;color:var(--muted)}
.hero-list,.check-list,.step-list,.timeline-list,.help-list,.link-list,.bullet-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.hero-list li,.check-list li,.step-list li,.timeline-list li,.help-list li,.link-list li,.bullet-list li{padding:12px 14px;background:var(--surface);border:1px solid var(--border);border-radius:14px;color:var(--text)}
.section{padding:28px 0 8px}.section:last-of-type{padding-bottom:40px}.section-soft{background:linear-gradient(180deg,rgba(255,255,255,.35),transparent)}.section-muted{background:var(--bg-soft)}.section-dark{background:linear-gradient(180deg,var(--bg-alt),var(--bg));color:var(--header-text)}.section-head{display:grid;gap:8px;margin-bottom:18px}.section-head.left{max-width:780px}.section-head h2{margin:0;font-size:clamp(26px,2.8vw,40px);line-height:1.12;letter-spacing:-.03em}.section-head p{margin:0;color:var(--muted)}
.grid-2,.grid-3,.grid-4{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.compact-grid{display:grid;gap:14px}
.card,.tile,.note-card,.step-card,.help-card,.matrix-card{padding:18px}.card h3,.tile h3,.note-card h3,.step-card h3,.help-card h3,.matrix-card h3,.panel h3{margin:0 0 8px;font-size:18px;line-height:1.25}.card p + p,.tile p + p,.note-card p + p{margin-top:8px}
.label-row,.mini-row,.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.label,.mini-label,.tag{display:inline-flex;align-items:center;justify-content:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-2);font-size:12px;font-weight:700}.muted-label{background:var(--surface-2);color:var(--muted)}
.panel{padding:22px}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.panel-title h3{margin:0}.panel-note{padding:14px 16px;background:var(--surface-2);border-radius:14px;border:1px dashed var(--border)}
.timeline-list li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start}.timeline-index{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--accent);color:#0a2d1d;font-weight:700}.timeline-list h3{margin:0 0 6px;font-size:18px}.timeline-list p{margin:0;color:var(--muted)}
.window-mock{padding:16px;overflow:hidden}.window-bar{display:flex;align-items:center;gap:8px;padding-bottom:12px;border-bottom:1px solid var(--border)}.window-dot{width:10px;height:10px;border-radius:50%}.window-dot.red{background:#ff6b6b}.window-dot.yellow{background:#f1c146}.window-dot.green{background:#19c37d}.window-body{padding-top:16px}.window-title{margin:0 0 8px;font-size:20px}.window-lines{display:grid;gap:10px}.window-line{height:12px;border-radius:999px;background:linear-gradient(90deg,var(--surface-2),rgba(0,0,0,.03))}.window-line.short{width:72%}.window-line.mid{width:88%}.window-line.long{width:100%}
.phone-frame{padding:14px;border-radius:34px;background:linear-gradient(180deg,#0e1318,#1c242d);box-shadow:var(--shadow)}.phone-screen{border-radius:22px;overflow:hidden;background:#fff;min-height:420px}.phone-screen img{width:100%;height:100%;object-fit:cover}.phone-caption{padding:12px 4px 0;color:var(--muted);font-size:13px}
.settings-board{padding:20px;display:grid;gap:14px}.switch-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--border)}.switch-row:last-child{border-bottom:0}.switch-row strong{display:block;margin-bottom:2px}.switch{width:48px;height:28px;border-radius:999px;background:#d8e5df;position:relative}.switch::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.16)}.switch.on{background:var(--accent)}.switch.on::after{left:23px}
.matrix-card{padding:18px}.matrix-grid{display:grid;gap:12px}.matrix-grid.five{grid-template-columns:repeat(5,minmax(0,1fr))}.matrix-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.matrix-grid .matrix-item{padding:14px;border-radius:14px;background:var(--surface-2);border:1px solid var(--border)}.matrix-item strong{display:block;margin-bottom:6px}.matrix-item p{margin:0;color:var(--muted);font-size:14px}
.help-grid,.faq-grid-list,.faq-split-grid,.faq-link-list{display:grid;gap:14px}.faq-list details,.faq-grid-list details,.faq-split-grid details{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:0 16px}.faq-list details summary,.faq-grid-list details summary,.faq-split-grid details summary{cursor:pointer;padding:16px 0;font-weight:700;list-style:none}.faq-list details p,.faq-grid-list details p,.faq-split-grid details p{margin:0 0 16px;color:var(--muted)}.faq-grid-list{grid-template-columns:repeat(2,minmax(0,1fr))}.faq-split-grid{grid-template-columns:1fr 1fr}.faq-link-list{grid-template-columns:repeat(3,minmax(0,1fr))}.faq-link-list a{display:block;padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:16px}.faq-link-list a strong{display:block;margin-bottom:6px}.faq-link-list a span{color:var(--muted);font-size:14px}
.site-footer{margin-top:28px;background:var(--footer-bg);color:var(--footer-text);padding:28px 0 36px;border-top:1px solid rgba(255,255,255,.08)}.footer-inner{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(3,minmax(0,.9fr));gap:18px;align-items:start}.footer-logo{width:132px;height:auto;margin-bottom:12px}.footer-brand p{margin:0;color:rgba(255,255,255,.76);max-width:36ch}.footer-col h2{margin:0 0 12px;font-size:15px;line-height:1.2}.footer-col a,.footer-col span{display:block;margin-bottom:10px;color:rgba(255,255,255,.82);font-size:14px}.footer-col a:last-child,.footer-col span:last-child{margin-bottom:0}.footer-note{padding:16px;border-radius:16px;background:rgba(255,255,255,.06)}
@media (max-width: 1080px){.hero-grid,.footer-inner{grid-template-columns:1fr}.site-nav{display:none;position:absolute;left:16px;right:16px;top:76px;padding:14px;background:var(--header-bg);border:1px solid rgba(255,255,255,.12);border-radius:16px;flex-wrap:wrap;justify-content:flex-start;gap:14px;box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.menu-toggle{display:inline-flex;margin-left:auto}.header-cta{display:none}.hero{padding-top:52px}.grid-4,.faq-link-list,.faq-grid-list,.faq-split-grid,.matrix-grid.five,.matrix-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width: 760px){.container{width:min(100% - 24px,var(--container))}.hero-grid,.grid-2,.grid-3,.grid-4,.faq-grid-list,.faq-split-grid,.faq-link-list,.matrix-grid.five,.matrix-grid.four{grid-template-columns:1fr}.hero{padding:42px 0 28px}.hero h1{max-width:100%;font-size:clamp(30px,10vw,42px)}.lead{font-size:16px}.hero-actions{justify-content:flex-start}.hero-centered .hero-actions{justify-content:center}.site-nav{top:72px}.section{padding:24px 0 4px}.footer-inner{gap:14px}.phone-screen{min-height:320px}}
@media (max-width: 420px){.site-header .brand-logo,.footer-logo{width:118px}.hero h1{font-size:clamp(28px,11vw,38px)}.timeline-list li{grid-template-columns:1fr}.window-bar{flex-wrap:wrap}.phone-frame{border-radius:28px}}

.page-account-login .hero{background:linear-gradient(180deg,#f6f9fc,#eaf0f7)}
.page-account-login .hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(300px,.98fr)}
.page-account-login .login-shell{display:grid;gap:14px;padding:18px;background:linear-gradient(180deg,#1a2531,#243241);color:#fff;border-radius:20px;border:1px solid rgba(255,255,255,.08)}
.page-account-login .login-shell .shell-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}
.page-account-login .login-shell .shell-row span{color:rgba(255,255,255,.76)}
.page-account-login .login-shell .shell-card{padding:16px;border-radius:16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1)}
.page-account-login .login-preview{display:grid;gap:12px}.page-account-login .login-preview img{border-radius:18px;overflow:hidden}
.page-account-login .login-check{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.page-account-login .login-check .card{background:#fff}
.page-account-login .login-path{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.78fr);gap:16px}
.page-account-login .login-path .panel{background:linear-gradient(180deg,#fff,#f8fbff)}
.page-account-login .right-note{display:grid;gap:12px}.page-account-login .right-note .note-card{background:#fff}
.page-account-login .trouble-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.page-account-login .trouble-grid .card{background:#fff}
@media (max-width: 760px){.page-account-login .login-check,.page-account-login .login-path,.page-account-login .trouble-grid{grid-template-columns:1fr}.page-account-login .hero-grid{grid-template-columns:1fr}}