:root {
  --bg: #f5fbf7;
  --paper: #fff;
  --paper-2: #eef7f1;
  --text: #13221a;
  --muted: #5e6d66;
  --line: #d8e5dd;
  --brand: #1fd97f;
  --brand-dark: #0f6e4a;
  --shadow: 0 18px 40px rgba(15, 33, 25, 0.1);
  --radius: 18px;
  --container: 1180px;
}
*,:before,:after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:linear-gradient(180deg,#f5fbf7,#eef7f1);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}
.container{width:min(calc(100% - 32px),var(--container));margin:0 auto}
.skip-link{position:absolute;left:-999px;top:8px;z-index:999;background:#fff;color:var(--text);padding:10px 14px;border-radius:999px;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:20;background:rgba(245,251,247,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(19,34,26,.08)}
.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:inline-flex;align-items:center}.brand-wordmark{width:132px}
.site-nav{display:flex;align-items:center;gap:20px;color:#244138;font-size:14px}
.site-nav a:hover,.site-nav a:focus-visible{color:var(--brand-dark)}
.nav-cta{padding:10px 16px;border-radius:999px;background:var(--brand);color:#06311f;font-weight:700}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid rgba(19,34,26,.14);border-radius:12px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}.menu-toggle span:not(.sr-only){width:18px;height:2px;border-radius:999px;background:var(--text)}
.hero{padding:72px 0 84px;background:radial-gradient(circle at top,rgba(31,217,127,.12),transparent 34%),linear-gradient(180deg,#f5fbf7,#eef7f1 58%,#fff 58.1%,#fff)}
.hero-layout{display:grid;gap:24px}
.hero-copy{text-align:center;max-width:860px;margin:0 auto}
.eyebrow,.section-kicker{margin:0 0 12px;color:#678074;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700}
.hero h1,.section-head h2,.register-strip h2{margin:0;letter-spacing:-.04em;line-height:1.06;word-break:keep-all;overflow-wrap:normal}
.hero h1{max-width:10ch;margin-inline:auto;font-size:clamp(3rem,5.8vw,4.6rem)}
.hero-lead{margin:18px auto 0;max-width:760px;color:var(--muted);font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:26px}
.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 .18s ease,background-color .18s ease,border-color .18s ease}.btn:hover,.btn:focus-visible{transform:translateY(-1px)}.btn-primary{background:var(--brand);color:#06311f}.btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
.prep-board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;width:min(100%,980px);margin:6px auto 0}
.prep-card,.entry-card,.link-card,.prepare-card,.register-strip,.faq-item,.footer-grid>div{box-shadow:var(--shadow)}
.prep-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px}
.prep-card.active{background:linear-gradient(180deg,#fff,#eef7f1);border-color:rgba(31,217,127,.22)}
.prep-tag{display:inline-flex;min-width:48px;height:28px;align-items:center;justify-content:center;border-radius:999px;background:rgba(31,217,127,.12);color:var(--brand-dark);font-size:12px;font-weight:800;letter-spacing:.06em}
.prep-card strong{display:block;margin:14px 0 8px;font-size:20px}.prep-card p{margin:0;color:var(--muted)}
.section{padding:72px 0;color:var(--text)}.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:24px}.section-head h2,.register-strip h2{font-size:clamp(2rem,4vw,3.2rem)}.section-head p:last-child{margin-bottom:0;color:var(--muted)}
.entry-layout{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.entry-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px}
.entry-card img{border-radius:18px;margin-bottom:12px}.entry-card h3{margin:0 0 8px;font-size:22px}.entry-card p{margin:0;color:var(--muted)}
.entry-cta{display:flex;flex-direction:column;justify-content:space-between}
.card-link{display:inline-flex;width:fit-content;margin-top:18px;color:var(--brand-dark);font-weight:700}
.login-layout{display:grid;grid-template-columns:1fr .9fr;gap:20px;align-items:center}
.login-copy{max-width:560px}
.check-list{margin:18px 0 0;padding-left:18px;color:var(--muted)}.check-list li+li{margin-top:8px}
.login-links{display:grid;gap:14px}
.link-card{display:block;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}.link-card strong{display:block;font-size:20px;margin-bottom:6px}.link-card span{color:var(--muted)}
.download-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(135deg,#0f1b15,#17322a);color:#fff;border-radius:24px;padding:26px 28px}
.download-strip h2,.download-strip p{color:#fff}.download-links{display:flex;flex-wrap:wrap;gap:10px}.download-links a{display:inline-flex;align-items:center;min-height:42px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#fff}
.register-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(135deg,#0f1b15,#17322a);color:#fff;border-radius:24px;padding:26px 28px}.register-strip h2,.register-strip p{color:#fff}.register-strip p{margin-bottom:0;color:rgba(255,255,255,.76)}
.faq-list{display:grid;gap:12px}.faq-item{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:18px}.faq-trigger{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border:0;background:transparent;font:inherit;text-align:left;font-weight:700;cursor:pointer}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}.faq-icon:before,.faq-icon:after{content:"";position:absolute;inset:50% auto auto 0;width:18px;height:2px;background:var(--brand-dark);border-radius:999px;transform:translateY(-50%)}.faq-icon:after{transform:translateY(-50%) rotate(90deg);transition:transform .2s ease}.faq-item.is-open .faq-icon:after{transform:translateY(-50%) rotate(180deg)}
.faq-panel{padding:0 20px 18px;color:var(--muted)}
.site-footer{background:#f3fbf7;color:rgba(19,34,26,.9);padding:36px 0;border-top:1px solid rgba(19,34,26,.08)}.footer-grid{display:grid;grid-template-columns:1.1fr .95fr 1fr;gap:20px}.footer-logo{width:142px;margin-bottom:10px}.footer-links{display:grid;gap:10px}.footer-links a:hover,.footer-links a:focus-visible,.footer-meta a:hover,.footer-meta a:focus-visible{color:var(--brand-dark)}.footer-meta{text-align:right}.footer-cta{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 16px;border-radius:14px;background:var(--brand);color:#06311f;font-weight:700;margin-bottom:10px}.footer-meta p{margin:0}
@media (max-width:1080px){.prep-board,.entry-layout,.login-layout,.footer-grid{grid-template-columns:1fr}.footer-meta{text-align:left}.download-strip,.register-strip{flex-direction:column;align-items:flex-start}}
@media (max-width:760px){.hero,.section{padding:58px 0}.menu-toggle{display:inline-flex}.site-nav{position:absolute;top:100%;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;gap:0;padding:12px;background:rgba(245,251,247,.98);border:1px solid rgba(19,34,26,.1);border-radius:16px;box-shadow:var(--shadow)}.site-nav.is-open{display:flex}.site-nav a{padding:12px 10px}.nav-cta{text-align:center;margin-top:6px}.hero h1{max-width:11ch}.hero-lead{font-size:16px}.entry-layout,.prep-board{grid-template-columns:1fr}.register-strip{padding:22px 20px}}