:root{--bg:#F4FAFC;--deep:#FFFFFF;--surface:#FFFFFF;--soft:#E7F3F6;--title:#0E3A46;--text:#24505A;--muted:#4A7380;--quiet:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deepsea:#0F5B68;--pale:#D7EEF2;--border:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--radius:18px;--max:1200px;--header:106px}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.78;overflow-x:hidden}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:#fff;color:var(--deepsea);padding:10px 16px;border-radius:999px;box-shadow:var(--shadow)}.skip-link:focus{top:8px}
.site-header{position:fixed;z-index:70;top:0;left:0;right:0}.harbor-bar{height:58px;background:var(--pale);border-bottom:1px solid var(--border)}.harbor-inner{max-width:var(--max);height:100%;margin:auto;padding:0 20px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.round-control{width:44px;height:44px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--deepsea);display:inline-grid;place-items:center;font-size:22px;line-height:1;box-shadow:0 6px 18px rgba(14,58,70,.04)}.round-control:hover,.round-control:focus-visible,.app-link:hover,.app-link:focus-visible,.btn:hover,.btn:focus-visible{outline:none;transform:translateY(-1px);box-shadow:0 9px 24px rgba(14,58,70,.12)}.brand-link{justify-self:center;min-width:140px;display:flex;justify-content:center;align-items:center}.brand-logo{max-height:34px;width:auto}.brand-fallback{font-weight:800;letter-spacing:.08em;color:var(--title);font-size:19px}.harbor-actions{justify-self:end;display:flex;align-items:center;gap:10px}.app-link{min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;color:#fff;background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);font-weight:700;transition:.2s ease}.dock-bar{height:48px;background:#fff;border-bottom:1px solid var(--border)}.dock-inner{max-width:850px;margin:auto;height:100%;display:flex;align-items:center;justify-content:center;gap:42px}.dock-inner a{height:48px;display:flex;align-items:center;position:relative;color:var(--muted);white-space:nowrap}.dock-inner a::after{content:"";position:absolute;left:18%;right:18%;bottom:0;height:3px;border-radius:4px;background:transparent}.dock-inner a:hover,.dock-inner a:focus-visible,.dock-inner a.is-current{color:var(--sea)}.dock-inner a.is-current::after{background:var(--sea)}
.site-main{padding-top:calc(var(--header) + 28px);min-height:70vh}.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}.section{padding:34px 0 46px}.section-head{max-width:760px;margin-bottom:22px}.eyebrow{margin:0 0 8px;color:var(--sea);font-size:14px;font-weight:800;letter-spacing:.16em}.section-head h2,.content-page h2{margin:0 0 12px;color:var(--title);font-size:clamp(22px,2.4vw,30px);line-height:1.3}.section-head p{margin:0;color:var(--muted)}h1{font-size:clamp(28px,4vw,32px);line-height:1.24;color:var(--title);margin:0 0 16px;letter-spacing:-.02em}.lead{font-size:17px;color:var(--muted);max-width:820px}.hero{padding:24px 0 40px}.hero-copy{max-width:850px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.btn{min-height:44px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:750;border:1px solid var(--border);transition:.2s ease}.btn-primary{color:#fff;background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);border-color:transparent}.btn-secondary{background:#fff;color:var(--deepsea)}.media-slot{margin-top:26px;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,var(--pale),var(--soft));min-height:180px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center}.media-slot img{width:100%;max-height:340px;object-fit:cover}.slot-mark{font-size:64px;opacity:.2;color:var(--deepsea);user-select:none}
.grid{display:grid;gap:18px}.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))}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.card h3{margin:0 0 10px;color:var(--title);font-size:19px}.card p{margin:0;color:var(--muted)}.card .mini{font-size:13px;color:var(--sea);font-weight:800;letter-spacing:.08em}.card-link{display:block;transition:.2s ease}.card-link:hover,.card-link:focus-visible{outline:2px solid rgba(26,127,143,.28);outline-offset:2px;transform:translateY(-2px)}.thumb{border-radius:14px;overflow:hidden;background:var(--soft);min-height:118px;margin-bottom:16px;display:grid;place-items:center}.thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}.thumb .slot-mark{font-size:42px}.tide-list{display:grid;gap:12px}.tide-item{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:16px}.tide-no{color:var(--sea);font-weight:900;font-size:23px}.tide-item h3{margin:0 0 6px;color:var(--title)}.tide-item p{margin:0}.soft-panel{background:var(--soft);border:1px solid var(--border);border-radius:20px;padding:24px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.72fr);gap:24px;align-items:start}.feature-image{border-radius:18px;overflow:hidden;background:var(--pale);min-height:230px;display:grid;place-items:center}.feature-image img{width:100%;height:auto;max-height:340px;object-fit:cover}.path-list{display:grid;gap:14px}.path{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;padding:18px;background:#fff;border-radius:16px;border:1px solid var(--border)}.path span{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--pale);color:var(--deepsea);font-weight:900}.path h3{margin:0 0 6px;color:var(--title)}.path p{margin:0}.app-panel{display:grid;grid-template-columns:180px 1fr;gap:26px;align-items:center}.app-icon{width:96px;height:96px;border-radius:24px;background:var(--pale);display:grid;place-items:center;overflow:hidden;border:1px solid var(--border)}.app-icon img{width:100%;height:100%;object-fit:cover}.page-hero{padding:8px 0 26px}.breadcrumbs{font-size:14px;color:var(--quiet);margin-bottom:8px}.content-page{padding-bottom:50px}.prose{max-width:920px}.prose p{margin:0 0 16px}.prose h2{margin-top:30px}.prose h3{color:var(--title);margin:24px 0 8px;font-size:19px}.quote{border-left:4px solid var(--bright);padding:16px 18px;margin:22px 0;background:var(--soft);border-radius:0 14px 14px 0;color:var(--muted)}.index-list{display:grid;gap:14px}.index-row{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--border)}.index-row:last-child{border-bottom:0}.index-row h3{margin:0;color:var(--title)}.index-row p{margin:0}.chapter{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;margin-bottom:18px}.chapter h2{margin-top:0}.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;position:relative;padding:20px 20px 20px 70px;background:#fff;border:1px solid var(--border);border-radius:18px}.step:before{content:counter(step,decimal-leading-zero);position:absolute;left:20px;top:18px;color:var(--sea);font-weight:900;font-size:22px}.qa{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px;margin-bottom:14px}.qa h2{font-size:19px;margin:0 0 8px}.qa p{margin:0}.notice{padding:18px 20px;border-radius:16px;background:var(--pale);color:var(--deepsea);border:1px solid var(--border)}
.site-footer{background:#0E3A46;color:#D4E8EC;padding:48px 0 calc(24px + env(safe-area-inset-bottom))}.footer-inner{width:min(calc(100% - 40px),var(--max));margin:auto}.footer-brand{max-width:520px}.footer-brand-mark{display:inline-block;margin-bottom:12px}.footer-logo{max-height:32px;width:auto;filter:brightness(0) invert(1)}.footer-brand div{display:flex;gap:12px;align-items:baseline}.footer-brand strong{font-size:20px;color:#fff}.footer-brand span{font-size:12px;letter-spacing:.14em}.footer-brand p{color:#b9d3d8;margin:12px 0 26px}.footer-map{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 0;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12)}.footer-map h2{font-size:15px;color:#fff;margin:0 0 12px}.footer-map a{display:block;color:#c7dde1;margin:7px 0;font-size:14px}.footer-map a:hover,.footer-map a:focus-visible{color:#fff;text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;font-size:13px;color:#aac9ce;flex-wrap:wrap}
.overlay{position:fixed;inset:0;z-index:90;background:rgba(8,35,42,.46);backdrop-filter:blur(4px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.modal-card{position:fixed;z-index:100;left:50%;top:50%;transform:translate(-50%,-48%) scale(.985);width:min(92%,760px);max-height:min(82vh,780px);overflow:auto;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:0 24px 70px rgba(14,58,70,.22);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease;padding:22px}.modal-card.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,-50%) scale(1)}.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:18px;border-bottom:1px solid var(--border)}.modal-head p{margin:4px 0 0;color:var(--muted)}.atlas-brand{display:flex;gap:12px;align-items:center}.atlas-logo{height:30px;width:auto}.atlas-brand div{display:flex;flex-direction:column}.atlas-brand span{font-size:11px;color:var(--quiet);letter-spacing:.14em}.atlas-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;padding-top:18px}.atlas-group h2{font-size:14px;color:var(--sea);letter-spacing:.12em}.atlas-group a{display:block;padding:10px;border-radius:12px}.atlas-group a:hover,.atlas-group a:focus-visible{background:var(--soft);outline:none}.atlas-group b{display:block;color:var(--title)}.atlas-group span{display:block;color:var(--muted);font-size:13px;margin-top:2px}.search-dialog{width:min(92%,620px)}.search-box{padding:20px 0}.search-box label{display:block;font-size:13px;color:var(--quiet);margin-bottom:7px}.search-box input{width:100%;min-height:48px;border-radius:999px;border:1px solid var(--border);padding:0 18px;color:var(--title);background:var(--bg);outline:none}.search-box input:focus{border-color:var(--sea);box-shadow:0 0 0 4px rgba(26,127,143,.10)}.search-note{font-size:13px;color:var(--quiet);margin:8px 8px 0}.preset-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.preset-links a{min-height:44px;display:flex;align-items:center;padding:0 14px;background:var(--soft);border-radius:14px;color:var(--deepsea);font-weight:700}.preset-links a:hover,.preset-links a:focus-visible{outline:2px solid rgba(26,127,143,.28)}.mobile-bottom{display:none}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}.app-panel{grid-template-columns:120px 1fr}.dock-inner{gap:24px}.footer-map{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){:root{--header:58px}.harbor-inner{padding:0 16px;grid-template-columns:1fr auto 1fr;gap:8px}.desktop-search,.dock-bar{display:none}.harbor-actions{gap:0}.app-link{padding:0 13px;font-size:14px}.brand-link{min-width:0}.brand-logo{max-width:128px;max-height:30px}.site-main{padding-top:calc(var(--header) + 20px);padding-bottom:64px}.container{width:calc(100% - 32px)}.section{padding:26px 0 34px}.hero{padding-top:10px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.card{padding:19px}.tide-item{grid-template-columns:46px 1fr;padding:16px}.index-row{grid-template-columns:1fr;gap:6px}.app-panel{grid-template-columns:1fr}.footer-inner{width:calc(100% - 32px)}.footer-map{grid-template-columns:1fr 1fr;gap:18px}.footer-bottom{padding-bottom:55px}.atlas-grid{grid-template-columns:1fr}.modal-card{width:92%;max-height:84vh;padding:18px}.preset-links{grid-template-columns:1fr}.mobile-bottom{position:fixed;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;min-height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.96);border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(14,58,70,.07);backdrop-filter:blur(10px)}.mobile-bottom a{min-width:0;min-height:50px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:11px;color:var(--quiet)}.mobile-bottom a span{font-size:17px;line-height:1}.mobile-bottom a.is-current{color:var(--sea);font-weight:800}.media-slot{min-height:140px}.feature-image{min-height:180px}.hero-actions .btn{flex:1 1 150px}.round-control{width:44px;height:44px}.footer-logo{max-width:140px}}
@media(max-width:390px){.app-link{padding:0 10px;font-size:13px}.brand-fallback{font-size:17px}.footer-map{grid-template-columns:1fr}.tide-item{grid-template-columns:1fr}.tide-no{font-size:18px}.atlas-group a{padding-left:4px;padding-right:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}