:root{--bg:#F4FAFC;--surface:#FFFFFF;--soft:#E7F3F6;--title:#0E3A46;--text:#24505A;--muted:#4A7380;--light:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deep:#0F5B68;--pale:#D7EEF2;--border:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--radius:18px;--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.28}h1{font-size:clamp(28px,4vw,32px);margin-bottom:16px}h2{font-size:clamp(21px,3vw,26px);margin-bottom:12px}h3{font-size:18px;margin-bottom:8px}p{margin-bottom:16px}.site-header{position:fixed;inset:0 0 auto;z-index:50}.harbor-bar{height:58px;background:var(--pale);border-bottom:1px solid var(--border);backdrop-filter:saturate(140%) blur(14px)}.harbor-inner{height:58px;max-width:var(--max);margin:auto;padding:0 20px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px}.round-button{width:44px;height:44px;border-radius:50%;border:1px solid var(--border);background:#fff;display:inline-grid;place-items:center;cursor:pointer;transition:.2s ease}.round-button:hover,.round-button:focus-visible,.close-button:hover,.close-button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,179,196,.22);border-color:rgba(26,127,143,.4)}.menu-button{justify-self:start;padding:12px}.menu-button span{display:block;width:18px;height:2px;background:var(--deep);border-radius:3px;margin:2px 0}.brand-link{display:flex;align-items:center;justify-content:center;min-width:120px}.top-logo{max-height:34px;width:auto}.brand-fallback{font-weight:800;letter-spacing:.08em;color:var(--title);white-space:nowrap}.harbor-actions{justify-self:end;display:flex;align-items:center;gap:10px}.search-glyph{width:16px;height:16px;border:2px solid var(--deep);border-radius:50%;display:block;position:relative}.search-glyph:after{content:"";position:absolute;width:7px;height:2px;background:var(--deep);right:-5px;bottom:-2px;transform:rotate(45deg);border-radius:2px}.app-link,.pill-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:#fff;font-weight:700;border:0;box-shadow:0 8px 20px rgba(15,91,104,.14)}.app-link:hover,.pill-button:hover{filter:brightness(1.03);transform:translateY(-1px)}.app-link:focus-visible,.pill-button:focus-visible,.ghost-button:focus-visible,a:focus-visible{outline:3px solid rgba(43,179,196,.3);outline-offset:3px}.dock-nav{height:48px;background:#fff;border-bottom:1px solid var(--border)}.dock-inner{max-width:900px;height:100%;margin:auto;display:flex;align-items:center;justify-content:space-around;padding:0 18px}.dock-inner a{height:48px;display:flex;align-items:center;position:relative;color:var(--muted);font-weight:650}.dock-inner a.active{color:var(--sea)}.dock-inner a.active:after{content:"";position:absolute;left:10%;right:10%;bottom:0;height:3px;background:var(--sea);border-radius:3px 3px 0 0}.site-main{padding-top:106px;min-height:70vh}.container{max-width:var(--max);margin:auto;padding:0 20px}.section{padding:58px 0}.section.compact{padding:38px 0}.section-soft{background:var(--soft)}.section-title{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}.section-title p{max-width:650px;color:var(--muted);margin:0}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--sea);letter-spacing:.08em;font-size:13px;margin-bottom:10px}.hero{padding:46px 0 54px}.hero-card{background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow);padding:34px}.hero-copy{max-width:820px}.hero-copy p{font-size:17px;color:var(--muted);max-width:820px}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.ghost-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;background:#fff;color:var(--deep);border:1px solid var(--border);font-weight:700}.cover-media{margin-top:26px;border-radius:18px;overflow:hidden;background:var(--pale);max-height:340px}.cover-media img{width:100%;max-height:340px;object-fit:cover}.image-slot{width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,var(--pale),var(--soft));border:1px solid var(--border);border-radius:16px;position:relative;overflow:hidden}.image-slot:after{content:"";position:absolute;width:120px;height:120px;border:18px solid rgba(26,127,143,.08);border-radius:50%;right:8%;top:16%}.cover-media .image-slot{max-height:340px;border-radius:18px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(14,58,70,.055)}.card-media{margin:-22px -22px 18px;overflow:hidden;border-radius:18px 18px 0 0}.card-media img,.card-media .image-slot{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}.card p{color:var(--muted);margin-bottom:0}.card .text-link{display:inline-flex;margin-top:16px;color:var(--sea);font-weight:750}.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:28px;align-items:center}.split-media img,.split-media .image-slot{width:100%;border-radius:18px;aspect-ratio:4/3;object-fit:cover}.tidal-list{display:grid;gap:12px;margin-top:22px}.tidal-item{display:grid;grid-template-columns:56px 1fr;gap:15px;padding:16px 0;border-top:1px solid var(--border)}.tidal-item strong{font-size:22px;color:var(--sea)}.tidal-item p{margin:4px 0 0;color:var(--muted)}.quad-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.mini-panel{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px}.mini-panel p{color:var(--muted);margin-bottom:0}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.gallery-item{background:#fff;border-radius:18px;border:1px solid var(--border);overflow:hidden}.gallery-item img,.gallery-item .image-slot{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}.gallery-item div:last-child{padding:16px 18px}.gallery-item p{color:var(--muted);margin:0}.path-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.path{background:var(--pale);border:1px solid var(--border);border-radius:18px;padding:22px}.path strong{color:var(--deep);font-size:18px}.path p{margin:8px 0 0;color:var(--text)}.notice{background:var(--pale);border:1px solid var(--border);padding:20px;border-radius:16px;color:var(--deep)}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;align-items:start}.content-stack{display:grid;gap:20px}.article-block{background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px}.article-block p:last-child{margin-bottom:0}.side-card{position:sticky;top:126px;background:var(--pale);border-radius:18px;padding:20px;border:1px solid var(--border)}.side-card a{display:block;padding:10px 0;border-bottom:1px solid var(--border);color:var(--deep);font-weight:650}.side-card a:last-child{border-bottom:0}.index-list{display:grid;gap:16px}.index-row{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;display:grid;grid-template-columns:100px 1fr;gap:18px}.index-row .label{color:var(--sea);font-weight:800}.longform{background:#fff;border:1px solid var(--border);border-radius:20px;padding:30px}.longform h2{margin-top:34px}.longform h2:first-child{margin-top:0}.steps{counter-reset:step;display:grid;gap:16px}.step{counter-increment:step;background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px 22px 22px 72px;position:relative}.step:before{content:counter(step,decimal-leading-zero);position:absolute;left:20px;top:22px;color:var(--sea);font-size:20px;font-weight:800}.faq-list{display:grid;gap:16px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.faq-item h2{font-size:19px}.faq-item p{margin-bottom:0;color:var(--muted)}.site-footer{background:#0E3A46;color:#D4E8EC;padding:52px 0 28px}.footer-inner{max-width:var(--max);margin:auto;padding:0 20px}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:32px}.footer-logo-link{min-width:70px}.footer-logo{max-height:34px;width:auto}.footer-brand strong{display:block;color:#fff;font-size:20px}.footer-brand span{font-size:12px;letter-spacing:.18em;color:#A8CBD2}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}.footer-grid section{display:grid;align-content:start}.footer-grid h2{color:#fff;font-size:16px;margin-bottom:10px}.footer-grid a{padding:5px 0;color:#D4E8EC}.footer-grid a:hover{color:#fff}.footer-note{margin:34px 0 12px;padding-top:22px;border-top:1px solid rgba(212,232,236,.14);color:#B9D5DB}.copyright{margin:0;color:#8FB7C0;font-size:14px}.overlay{position:fixed;inset:0;background:rgba(5,35,42,.48);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.modal-card{position:fixed;left:50%;top:50%;transform:translate(-50%,-48%);z-index:90;width:min(92%,760px);max-height:min(82vh,760px);overflow:auto;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:0 24px 70px rgba(14,58,70,.22);padding:24px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.modal-card.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,-50%)}.modal-head{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:18px}.modal-brand{display:flex;align-items:center;gap:12px}.modal-logo{max-height:28px;width:auto}.modal-head strong{display:block;color:var(--title)}.modal-head span{display:block;color:var(--light);font-size:13px}.close-button{width:44px;height:44px;border-radius:50%;border:1px solid var(--border);background:#fff;font-size:28px;line-height:1;cursor:pointer}.atlas-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.atlas-groups section{background:var(--bg);border:1px solid var(--border);border-radius:16px;padding:16px}.atlas-groups h2{font-size:16px;margin-bottom:6px}.atlas-groups a{display:block;padding:10px 0;border-bottom:1px solid var(--border)}.atlas-groups a:last-child{border-bottom:0}.atlas-groups a strong{display:block;color:var(--deep);font-size:15px}.atlas-groups a span{display:block;color:var(--muted);font-size:13px;line-height:1.55;margin-top:2px}.search-card{width:min(92%,620px)}.search-field{height:52px;border:1px solid var(--border);border-radius:999px;display:flex;align-items:center;gap:12px;padding:0 18px;background:var(--bg)}.search-field input{border:0;outline:0;background:transparent;width:100%;min-width:0;color:var(--text)}.preset-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.preset-links a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:12px;color:var(--deep);background:#fff}.modal-open{overflow:hidden}.mobile-bottom{display:none}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.tag{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;background:var(--pale);color:var(--deep);font-size:14px;font-weight:650}.app-showcase{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.app-icon{width:76px;height:76px;border-radius:20px;overflow:hidden;background:var(--pale);margin-bottom:16px}.app-icon img,.app-icon .image-slot{width:100%;height:100%;object-fit:cover;border-radius:20px}.quote{padding:20px 22px;border-left:4px solid var(--sea);background:var(--pale);border-radius:0 16px 16px 0;color:var(--deep)}
@media(max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}.content-layout{grid-template-columns:1fr}.side-card{position:static}.split,.app-showcase{grid-template-columns:1fr}.path-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.harbor-inner{padding:0 16px;grid-template-columns:56px minmax(0,1fr) 94px;gap:6px}.dock-nav{display:none}.site-main{padding-top:58px}.search-button{display:none}.harbor-actions{gap:0}.app-link{padding:0 13px;font-size:14px;white-space:nowrap}.brand-link{min-width:0}.top-logo{max-width:130px}.section{padding:42px 0}.hero{padding:30px 0 42px}.hero-card{padding:24px}.cards,.quad-grid,.gallery-grid{grid-template-columns:1fr}.index-row{grid-template-columns:1fr;gap:6px}.atlas-groups{grid-template-columns:1fr}.modal-card{width:92%;max-height:84vh;padding:18px}.preset-links{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:60;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{min-height:50px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;color:var(--light);line-height:1.15}.mobile-bottom a span{font-size:17px;margin-bottom:2px}.mobile-bottom a.active{color:var(--sea);font-weight:800}.site-footer{padding-bottom:34px}.side-card{display:none}.section-title{display:block}.section-title p{margin-top:8px}.container,.footer-inner{padding-left:16px;padding-right:16px}}
@media(max-width:420px){.footer-grid{grid-template-columns:1fr}.harbor-inner{grid-template-columns:50px minmax(0,1fr) 82px}.app-link{padding:0 10px;font-size:13px}.brand-fallback{font-size:15px}.hero-card{padding:21px}.article-block,.longform{padding:21px}.modal-card{width:calc(100% - 24px)}}