:root{--bg:#F4FAFC;--deep:#FFFFFF;--card:#FFFFFF;--soft:#E7F3F6;--title:#0E3A46;--text:#24505A;--muted:#4A7380;--faint:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--dark:#0F5B68;--light:#D7EEF2;--line: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-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.72;overflow-x:hidden}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}a,button{outline:none}a:focus-visible,button:focus-visible{box-shadow:0 0 0 3px rgba(43,179,196,.28);border-radius:8px}.site-width,.shell-inner,.shell-tab-inner{width:min(calc(100% - 32px),var(--max));margin-inline:auto}.site-shell{position:fixed;top:0;left:0;right:0;z-index:220}.mist-line{height:20px;background:var(--dark);color:#fff;font-size:12px}.mist-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.mist-search{height:20px;border:0;background:transparent;color:#fff;padding:0 6px;cursor:pointer}.pier-bar{height:62px;background:#fff;border-bottom:1px solid var(--line)}.pier-inner{height:62px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center;color:var(--title);font-weight:800}.brand-link img{height:36px;max-width:210px;object-fit:contain;object-position:left center}.drawer-button{justify-self:center;min-width:88px;height:44px;border:1px solid var(--line);background:var(--soft);color:var(--dark);border-radius:10px;cursor:pointer}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 16px;background:linear-gradient(135deg,var(--bright),var(--sea) 55%,var(--dark));color:#fff;border-radius:10px;font-weight:700}.shell-tabs{height:42px;background:var(--light);border-bottom:1px solid var(--line)}.shell-tab-inner{height:42px;display:flex;align-items:center;gap:4px}.shell-tab-inner a{display:inline-flex;align-items:center;min-height:34px;padding:0 14px;border-radius:8px;color:var(--dark);font-size:14px}.shell-tab-inner a.is-current{background:var(--sea);color:#fff}.site-main{padding-top:148px}.page-wrap{padding:34px 0 68px}.hero-copy{text-align:left;margin-top:18px}.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--sea);font-weight:800}.hero-copy h1,.page-head h1{font-size:clamp(28px,4vw,32px);line-height:1.28;color:var(--title);margin:8px 0 14px}.hero-copy p,.page-head p{max-width:820px;margin:0;color:var(--muted)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.btn{min-height:44px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-weight:700}.btn-primary{background:linear-gradient(135deg,var(--bright),var(--sea) 55%,var(--dark));color:#fff}.btn-secondary{background:#fff;color:var(--dark);border:1px solid var(--sea)}.media-slot{width:100%;height:220px;background:linear-gradient(180deg,#fff,var(--light));border:1px solid var(--line);border-radius:18px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-placeholder{width:52px;height:12px;border-radius:999px;background:rgba(26,127,143,.16);box-shadow:0 18px 0 rgba(26,127,143,.10),0 -18px 0 rgba(26,127,143,.08)}.banner-slot{height:300px}.section-block{margin-top:26px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.section-block h2{font-size:22px;line-height:1.35;color:var(--title);margin:0 0 14px}.section-block h3{font-size:17px;color:var(--title);margin:0 0 8px}.section-block p{margin:0 0 12px}.section-block p:last-child{margin-bottom:0}.stepped-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}.step-card{padding:18px;border-radius:16px;min-height:132px;border:1px solid var(--line);background:#fff}.step-card:nth-child(odd){background:var(--light)}.step-card:nth-child(4n+2){background:var(--bright);color:var(--title)}.step-card:nth-child(4n){background:var(--dark);color:#fff}.step-card h3{margin:0 0 8px;font-size:16px}.step-card p{margin:0;font-size:14px;line-height:1.65}.step-card a{display:inline-flex;margin-top:10px;font-weight:800}.pebble-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.pebble-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:16px;box-shadow:var(--shadow)}.pebble-card .media-slot{height:200px;border-radius:18px}.pebble-card h3{font-size:18px;color:var(--title);margin:14px 0 8px}.pebble-card p{margin:0;color:var(--muted);font-size:15px}.number-list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.number-item{border-left:4px solid var(--bright);background:var(--soft);border-radius:12px;padding:15px}.number-item strong{display:block;font-size:22px;color:var(--sea)}.split-section{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:center}.gallery-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.gallery-tile{border:1px solid var(--line);border-radius:14px;background:var(--soft);padding:12px}.gallery-tile .media-slot{height:150px}.app-panel{display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:center}.app-image{height:360px}.icon-slot{width:64px;height:64px;border-radius:16px;background:var(--light);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin-bottom:12px}.icon-slot img{width:48px;height:48px;object-fit:contain}.mini-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.mini-links a{min-height:42px;padding:0 14px;display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--dark);font-weight:700}.page-head{margin-bottom:22px}.content-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.content-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.content-card h2{margin:0 0 10px;font-size:20px;color:var(--title)}.content-card p{margin:0 0 10px}.content-card p:last-child{margin-bottom:0}.index-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.index-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.index-item strong{display:block;color:var(--sea);margin-bottom:7px}.long-read{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}.long-read h2{color:var(--title);font-size:20px;margin:24px 0 10px}.long-read h2:first-child{margin-top:0}.timeline{border-left:3px solid var(--light);padding-left:22px}.timeline article{position:relative;margin-bottom:18px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.timeline article:before{content:"";position:absolute;left:-31px;top:22px;width:14px;height:14px;background:var(--sea);border:4px solid var(--bg);border-radius:50%}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0}.site-footer{background:var(--title);color:#D4E8EC;padding:34px 0 22px;font-size:13px}.footer-brand{display:flex;align-items:center;gap:12px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.14)}.footer-brand img{height:32px;max-width:200px;object-fit:contain}.footer-brand strong{display:block;color:#fff;font-size:17px}.footer-brand span{display:block;letter-spacing:.12em}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:24px 0}.footer-groups section{display:flex;flex-direction:column;gap:6px}.footer-groups h2{font-size:14px;color:#fff;margin:0 0 6px}.footer-groups a:hover{text-decoration:underline}.footer-note{border-top:1px solid rgba(255,255,255,.14);padding-top:18px}.footer-note p{margin:4px 0}.screen-mask{position:fixed;inset:0;background:rgba(6,35,43,.46);z-index:300;opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.screen-mask.is-open{opacity:1;visibility:visible;pointer-events:auto}.tide-drawer{position:fixed;top:0;right:0;width:410px;max-width:86vw;height:100dvh;background:#F4FAFC;z-index:330;transform:translateX(103%);visibility:hidden;pointer-events:none;transition:transform .28s ease,visibility .28s;overflow-y:auto;padding:18px}.tide-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:14px;position:sticky;top:-18px;background:#F4FAFC;padding:18px 0 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var(--line);border-radius:14px;padding:18px}.notice-card strong{color:var(--title)}
@media (max-width:900px){.stepped-grid{grid-template-columns:repeat(2,1fr)}.pebble-grid{grid-template-columns:repeat(2,1fr)}.number-list{grid-template-columns:repeat(2,1fr)}.split-section,.app-panel{grid-template-columns:1fr}.app-panel .app-image{max-width:420px;margin-inline:auto;width:100%}.content-grid{grid-template-columns:1fr}.index-list{grid-template-columns:repeat(2,1fr)}.footer-groups{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.site-main{padding-top:116px}.shell-tabs{display:none}.mist-line{height:20px}.pier-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-link{min-width:0;overflow:hidden}.brand-link img{max-width:130px;height:30px}.brand-link span{font-size:15px;white-space:nowrap}.drawer-button{min-width:74px;padding:0 9px}.app-link{padding:0 11px;white-space:nowrap}.page-wrap{padding-top:24px}.banner-slot{height:300px}.stepped-grid{grid-template-columns:1fr}.pebble-grid{grid-template-columns:1fr}.number-list{grid-template-columns:1fr}.gallery-strip{grid-template-columns:1fr 1fr}.footer-groups{grid-template-columns:1fr 1fr;gap:18px}.search-layer{top:20px;bottom:0;align-items:flex-start}.search-card{width:calc(100% - 20px);margin-top:62px;background:var(--light);border-radius:16px}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:200;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:50px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--dark)}.mobile-bottom a.is-current{background:var(--sea);color:#fff}.tide-drawer{width:86vw;max-width:86vw}.gallery-tile .media-slot{height:130px}.content-card,.section-block,.long-read{padding:18px}.index-list{grid-template-columns:1fr}}
@media (max-width:370px){.site-width,.shell-inner,.shell-tab-inner{width:min(calc(100% - 32px),var(--max))}.pier-inner{gap:5px}.drawer-button{min-width:68px;font-size:13px}.app-link{font-size:13px;padding:0 8px}.gallery-strip{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr}}