:root{--bg:#F4FAFC;--surface:#FFFFFF;--soft:#E7F3F6;--title:#0E3A46;--text:#24505A;--muted:#4A7380;--aux:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deep:#0F5B68;--pale:#D7EEF2;--border:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input{font:inherit}.wrap{width:min(calc(100% - 32px),var(--max));margin:auto}.site-head{position:fixed;inset:0 0 auto 0;z-index:80}.mist-line{height:20px;background:var(--title);color:white;font-size:12px}.mist-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.mist-brand{color:white}.text-button{border:0;background:transparent;color:white;min-width:44px;height:20px;cursor:pointer}.pier-bar{height:62px;background:white;border-bottom:1px solid var(--border)}.pier-inner{height:62px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand{justify-self:start;display:flex;align-items:center;min-height:44px;font-weight:800;color:var(--title);font-size:20px}.brand img{height:36px;width:auto;object-fit:contain}.drawer-toggle,.app-link{min-height:44px;border:1px solid var(--border);border-radius:12px;padding:8px 16px;background:white;color:var(--deep);display:inline-flex;align-items:center;justify-content:center}.drawer-toggle{cursor:pointer}.app-link{justify-self:end;background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:white;border:0}.shell-tabs{height:42px;background:var(--pale);border-bottom:1px solid var(--border)}.shell-inner{height:42px;display:flex;align-items:center;gap:8px}.shell-inner a{padding:5px 12px;border-radius:8px;color:var(--deep);line-height:1.4}.shell-inner a.is-current{background:var(--sea);color:white}.site-main{padding-top:124px}.hero{padding:30px 0 56px}.banner-slot{background:white;border:1px solid var(--border);border-radius:16px;min-height:120px;display:flex;align-items:center;justify-content:center}.banner-slot img{width:100%;height:auto;object-fit:contain;object-position:center;border-radius:0}.fallback-art{min-height:220px;width:100%;display:grid;place-items:center;background:linear-gradient(135deg,var(--pale),white);color:var(--title);font-size:32px;font-weight:800}.hero-copy{padding:26px 0 0;max-width:850px}.eyebrow{color:var(--sea);font-weight:750;letter-spacing:.08em}.hero h1,.page-hero h1{font-size:clamp(28px,4vw,32px);line-height:1.28;color:var(--title);margin:.25em 0 .55em}.hero p,.page-hero p{font-size:17px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.btn{display:inline-flex;min-height:44px;align-items:center;padding:9px 16px;border-radius:12px;border:1px solid var(--border);background:white;color:var(--deep);font-weight:700}.btn.primary{background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:white;border:0}.section{padding:48px 0}.section.alt{background:white}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section h2,.content-card h2,.article-body h2{color:var(--title);line-height:1.35}.section h2{font-size:26px;margin:0}.section-lead{max-width:760px;color:var(--muted)}.step-grid,.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step-card,.content-card,.pebble,.faq-item,.article-body,.notice-card{background:white;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.step-card{padding:18px;border-top:4px solid var(--bright)}.step-card:nth-child(even){border-top-color:var(--deep)}.step-card h3,.pebble h3{margin:0 0 8px;color:var(--title)}.step-card a,.text-link{color:var(--sea);font-weight:700}.feature{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:28px;align-items:center}.media-box{background:var(--soft);border:1px solid var(--border);border-radius:16px;padding:12px;min-height:220px;display:flex;align-items:center;justify-content:center}.media-box img{width:100%;max-height:420px;object-fit:contain;object-position:center}.number-list{display:grid;gap:12px}.number-list a{display:grid;grid-template-columns:56px 1fr;gap:10px;padding:15px 16px;background:var(--soft);border-radius:12px;color:var(--deep)}.number-list strong{color:var(--sea)}.pebble{overflow:hidden}.pebble .media-box{border:0;border-radius:0;box-shadow:none;min-height:190px}.pebble .media-box img{height:200px;object-fit:contain}.pebble-copy{padding:18px}.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.gallery-item{background:white;border:1px solid var(--border);border-radius:16px;padding:12px}.gallery-item .media-box{min-height:180px}.gallery-item p{margin:10px 4px 4px}.path-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.path-list article{padding:22px;background:var(--soft);border-radius:16px}.page-hero{padding:42px 0 24px}.page-hero .wrap{max-width:900px}.article-wrap{width:min(calc(100% - 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@media(max-width:640px){.site-head{position:fixed}.shell-tabs{display:none}.site-main{padding-top:82px;padding-bottom:58px}.pier-inner{grid-template-columns:1fr auto 1fr;gap:8px}.brand{font-size:17px}.brand img{height:28px;max-width:120px}.drawer-toggle,.app-link{padding:6px 9px;font-size:14px}.step-grid,.card-grid,.index-list{grid-template-columns:1fr}.hero{padding-top:18px}.hero-copy{padding-top:20px}.section{padding:36px 0}.article-body{padding:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.site-footer{padding-bottom:90px}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:70;left:0;right:0;bottom:0;min-height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:white;border-top:1px solid var(--border)}.mobile-bottom a{min-height:50px;display:grid;place-items:center;font-size:13px;color:var(--deep)}.mobile-bottom a.is-current{background:var(--sea);color:white}.search-panel{top:82px}.search-card{width:calc(100% - 20px);background:var(--pale)}.banner-slot{border-radius:12px}.fallback-art{min-height:160px;font-size:25px}}