:root{--bg:#eef5fb;--paper:#fff;--soft:#f5f9fd;--line:#d9e8f5;--blue:#1675c8;--blue2:#2b9ce0;--cyan:#55c8ef;--ink:#1d3550;--muted:#667d92;--navy:#0d2c46;--shadow:0 16px 38px rgba(19,92,146,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#f7fbff 0,#eef5fb 240px,#eef5fb 100%);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}a{color:inherit}img{max-width:100%}button,a{touch-action:manipulation}.site-main{min-height:60vh}.container{width:min(1140px,calc(100% - 32px));margin:0 auto}.site-header{position:sticky;top:0;z-index:9000;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid rgba(28,117,200,.08)}.header-inner{max-width:1140px;min-height:68px;margin:0 auto;padding:0 16px;display:flex;align-items:center;gap:16px}.site-logo{display:flex;align-items:center;min-width:132px;text-decoration:none}.site-logo img{display:block;width:auto;height:38px;max-width:156px;object-fit:contain}.logo-text{font-weight:900;color:var(--blue);font-size:20px}.nav-core{display:flex;align-items:center;gap:2px;margin-left:auto}.nav-core a{padding:10px 12px;text-decoration:none;font-weight:700;white-space:nowrap;border-radius:10px}.nav-core a:hover,.nav-core a.is-current{color:var(--blue);background:#eef7ff}.account-actions{display:flex;align-items:center;gap:8px;margin-left:4px}.main-btn,.ghost-btn{min-height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 17px;border-radius:999px;font-weight:800;text-decoration:none;white-space:nowrap}.main-btn{background:linear-gradient(135deg,var(--cyan),var(--blue2) 48%,var(--blue));color:#fff;box-shadow:0 9px 22px rgba(22,117,200,.18)}.ghost-btn{color:var(--blue);background:#edf7ff;border:1px solid #cae7f8}.menu-toggle{display:none}.channel-bar{background:var(--soft);border-bottom:1px solid var(--line)}.channel-inner{max-width:1140px;margin:0 auto;padding:0 16px;display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none}.channel-inner::-webkit-scrollbar{display:none}.channel-inner a{padding:10px 9px;font-size:14px;color:var(--muted);text-decoration:none;white-space:nowrap}.channel-inner a:hover{color:var(--blue)}
.hero-slider{padding:26px 0 14px}.slider{width:min(1140px,calc(100% - 32px));margin:0 auto;position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);z-index:1}.slide{display:none}.slide.is-active{display:block}.slider .media{border:0;border-radius:0;aspect-ratio:16/4.7;min-height:240px}.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.92);color:var(--blue);font-size:28px;box-shadow:0 7px 22px rgba(13,44,70,.16);cursor:pointer}.slider-prev{left:16px}.slider-next{right:16px}.slider-dots{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px;z-index:2}.slider-dot{width:9px;height:9px;border-radius:50%;border:0;background:#b8cee0;padding:0}.slider-dot.is-active{background:var(--blue);transform:scale(1.25)}
.home-intro{padding:20px 0 6px}.intro-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:end;padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}.eyebrow{margin:0 0 8px;color:var(--blue);font-weight:900;letter-spacing:.08em}.intro-panel h1{margin:0;font-size:clamp(30px,4vw,44px);line-height:1.22;color:#113d62}.intro-panel p{margin:0;color:var(--muted);font-size:17px}.quick-grid{padding:22px 0}.quick-list{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quick-card{display:block;padding:22px;background:#fff;border:1px solid var(--line);border-radius:16px;text-decoration:none;box-shadow:0 10px 24px rgba(19,92,146,.07)}.quick-card strong{display:block;color:var(--blue);font-size:18px;margin-bottom:5px}.quick-card span{font-size:14px;color:var(--muted)}.brand-zone{padding:20px 0}.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.brand-link{padding:20px;border-radius:16px;background:linear-gradient(180deg,#fff,#f8fbfe);border:1px solid var(--line);text-decoration:none}.brand-link strong{display:block;font-size:18px;color:#164f79}.brand-link span{font-size:14px;color:var(--muted)}
.section{padding:34px 0}.section-tight{padding:22px 0}.surface{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:center;padding:24px}.split h2,.split h1{margin-top:0;color:#113d62}.split p{color:#516b82}.app-strip{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:center;padding:20px}.app-strip .media{aspect-ratio:16/9}.app-strip h2{margin:0 0 6px;color:#113d62}.app-strip p{margin:0 0 12px;color:var(--muted)}
.page-head{padding:34px 0 16px}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:10px}.breadcrumbs a{color:var(--blue);text-decoration:none}.page-head-inner{padding:30px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.page-head h1{margin:0 0 12px;font-size:clamp(28px,4vw,40px);line-height:1.3;color:#113d62}.page-lead{margin:0;color:#5c7388;font-size:17px}.article-wrap{width:min(820px,calc(100% - 32px));margin:0 auto;padding:12px 0 44px}.article-section{margin:20px 0;padding:24px 26px;background:#fff;border:1px solid var(--line);border-radius:16px}.article-section:nth-of-type(even){background:#f8fbfe}.article-section h2{margin:0 0 8px;color:#145f97;font-size:22px}.article-section p{margin:0;color:#3e5870}.media{position:relative;width:100%;overflow:hidden;border-radius:16px;background:#e9f4fb;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#e5f2fb,#f7fbff)}.article-media{margin:20px 0}.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.related a{padding:9px 13px;border-radius:999px;background:#edf7ff;color:var(--blue);text-decoration:none;font-weight:700;font-size:14px}.qa-list{display:grid;gap:14px;margin-top:20px}.qa-item{padding:22px 24px;border:1px solid var(--line);border-radius:16px;background:#fff}.qa-item h2{margin:0 0 8px;font-size:19px;color:#145f97}.qa-item p{margin:0;color:#3e5870}
.floating-tools{position:fixed;right:14px;top:35%;z-index:8000;width:88px;display:grid;gap:7px}.floating-tools a,.floating-tools button{min-height:40px;padding:8px 6px;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:12px;text-align:center;text-decoration:none;font:700 12px/1.2 Arial,"PingFang SC","Microsoft YaHei",sans-serif;box-shadow:0 8px 20px rgba(13,44,70,.08);cursor:pointer}.floating-tools .float-primary{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;border:0}.site-footer{margin-top:24px;background:var(--navy);color:#dbefff}.footer-grid{max-width:1140px;margin:0 auto;padding:42px 16px 30px;display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:28px}.footer-brand img{width:auto;height:38px;object-fit:contain;filter:none}.footer-grid h2{margin:0 0 10px;font-size:16px;color:#fff}.footer-grid p{color:#b8d2e5;font-size:14px}.footer-grid a{display:block;color:#c5deef;text-decoration:none;padding:3px 0;font-size:14px}.footer-bottom{max-width:1140px;margin:0 auto;padding:16px;border-top:1px solid rgba(255,255,255,.1);color:#a9c9dd;font-size:13px}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}
@media(max-width:1180px){.floating-tools{display:none}}
@media(max-width:980px){body{padding-bottom:62px}.site-header{position:sticky}.header-inner{min-height:64px;justify-content:space-between;gap:8px}.menu-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 8px;border:0;background:transparent;color:var(--blue);font-weight:800}.nav-core,.channel-bar{display:none}.site-logo{position:absolute;left:50%;transform:translateX(-50%);min-width:0}.site-logo img{height:34px;max-width:128px}.account-actions{margin-left:auto;gap:5px}.main-btn,.ghost-btn{min-height:38px;padding:0 10px;font-size:13px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(16,43,70,.16);overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(16,43,70,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line)}.drawer-logo img{display:block;height:34px;width:auto;max-width:142px;object-fit:contain}.drawer-close{min-height:40px;border:0;border-radius:10px;padding:0 10px;background:#edf7ff;color:var(--blue);font-weight:800}.drawer-scroll{padding:10px 16px 26px}.drawer-scroll section{padding:10px 0;border-bottom:1px solid #edf2f6}.drawer-scroll h2{font-size:13px;color:#8194a5;margin:0 0 5px}.drawer-scroll a{display:block;padding:8px 0;text-decoration:none;color:var(--ink);font-weight:700}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(47,168,247,.2);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:54px;display:flex;align-items:center;justify-content:center;text-decoration:none;color:var(--blue);font-size:13px;font-weight:800}.slider .media{min-height:auto;aspect-ratio:16/6.7}.intro-panel,.split{grid-template-columns:1fr}.quick-list{grid-template-columns:repeat(2,1fr)}.brand-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.app-strip{grid-template-columns:1fr}.app-strip .media{max-width:340px}.article-wrap{padding-bottom:30px}}
@media(max-width:560px){.container,.article-wrap{width:min(100% - 24px,1140px)}.hero-slider{padding-top:14px}.slider{width:calc(100% - 24px);border-radius:14px}.slider .media{aspect-ratio:16/8;min-height:140px}.slider-prev,.slider-next{width:36px;height:36px;font-size:24px}.intro-panel{padding:22px}.intro-panel h1{font-size:29px}.intro-panel p{font-size:15px}.quick-list{grid-template-columns:1fr 1fr;gap:10px}.quick-card{padding:16px}.brand-grid{grid-template-columns:1fr 1fr;gap:10px}.brand-link{padding:16px}.page-head{padding-top:20px}.page-head-inner{padding:22px}.article-section{padding:20px}.footer-grid{grid-template-columns:1fr;gap:18px}.footer-bottom{padding-bottom:20px}.site-logo img{max-width:110px;height:32px}.main-btn,.ghost-btn{padding:0 8px;min-width:auto}.account-actions{gap:3px}}