:root{--page:#F4F8FD;--card:#FFFFFF;--pale:#EAF3FF;--line:#C3D6F0;--title:#143250;--text:#243447;--muted:#5B6B7C;--hint:#7A8896;--blue:#1C63E8;--blue-dark:#154FC0;--footer:#0E2338;--footer-text:#D5E6F6;--shadow:0 14px 34px rgba(16,48,84,.08);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--page);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue-dark)}img{max-width:100%}.shell{width:min(1220px,calc(100% - 40px));margin:0 auto}.site-main{min-height:60vh}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(247,251,255,.96);box-shadow:0 8px 24px rgba(16,48,84,.08);backdrop-filter:blur(14px)}.header-inner{max-width:1220px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{display:flex;align-items:center;min-width:150px}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{font-weight:900;color:var(--title);font-size:22px;letter-spacing:.04em}.nav-core{display:flex;align-items:center;gap:6px;white-space:nowrap;flex-wrap:nowrap}.nav-core a{color:#143250;padding:8px 12px;border-radius:999px;font-weight:700;text-decoration:none}.nav-core a.is-current,.nav-core a:hover{background:#E4F0FF;color:#1C63E8}.header-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}.login-btn,.register-btn{height:42px;min-width:88px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;text-decoration:none;font-weight:700;white-space:nowrap}.login-btn{background:#1C63E8;color:#FFFFFF}.login-btn:hover{background:#154FC0;color:#fff}.register-btn{background:#FFFFFF;color:#143250;border:1px solid #C3D6F0}.menu-toggle{display:none;border:0;background:transparent;padding:8px;width:42px;height:42px}.menu-toggle span{display:block;height:2px;background:var(--title);margin:5px 0;border-radius:2px}.channel-strip{background:#fff;border-top:1px solid #edf3fb}.channel-inner{max-width:1220px;margin:0 auto;padding:0 20px;display:flex;gap:18px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;color:#5B6B7C;padding:10px 0;font-weight:700;font-size:14px}.channel-inner a:hover{color:#1C63E8}.mobile-drawer,.drawer-mask{display:none}.hero,.section{padding:78px 0}.section.compact{padding:52px 0}.hero-grid,.split{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:34px;align-items:center}.hero h1,.page-hero h1{font-size:clamp(40px,4.6vw,52px);line-height:1.18;color:var(--title);margin:0 0 22px;letter-spacing:-.02em}.hero p,.page-hero p{font-size:18px;color:var(--muted);max-width:760px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;background:#EAF3FF;padding:6px 12px;border-radius:999px;margin-bottom:16px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn-main{height:44px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:800}.btn-main:hover{color:#fff;background:var(--blue-dark)}.btn-outline{height:44px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;color:var(--title);font-weight:800}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:18px;background:#EAF3FF;aspect-ratio:16/9}.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media.hero-media{height:280px;aspect-ratio:auto}.media.article-media{height:244px;aspect-ratio:auto}.media.card-media{height:176px;aspect-ratio:auto}.media-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;color:#6c7d90;background:linear-gradient(135deg,#EAF3FF,#F7FBFF);font-size:14px}.white-panel,.info-card,.topic-card,.qa-item,.notice-box,.step-item,.quote-card{background:#fff;border:1px solid #e4edf8;border-radius:18px;box-shadow:var(--shadow)}.white-panel{padding:28px}.summary-grid,.three-grid,.topic-grid,.qa-grid,.quote-grid,.link-grid{display:grid;gap:22px}.summary-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.three-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.qa-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quote-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.link-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.info-card,.topic-card,.qa-item,.quote-card{padding:24px}.info-card h2,.info-card h3,.topic-card h3,.qa-item h3,.quote-card h3{margin:0 0 10px;color:var(--title);line-height:1.35}.info-card p,.topic-card p,.qa-item p,.quote-card p{margin:0;color:var(--muted)}.topic-card .media{margin-bottom:16px}.text-link{display:inline-flex;margin-top:14px;font-weight:800}.section-head{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:28px}.section-head h2{margin:0;color:var(--title);font-size:clamp(28px,3.6vw,38px);line-height:1.25}.section-head p{margin:0;max-width:620px;color:var(--muted)}.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 12px;scrollbar-width:thin}.quick-scroll a{flex:0 0 auto;padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--title);font-weight:700}.dual{display:grid;grid-template-columns:1fr 1fr;gap:24px}.plain-list{margin:0;padding-left:20px;color:var(--text)}.plain-list li+li{margin-top:10px}.page-hero{padding:64px 0 42px}.page-hero .shell{display:grid;gap:18px}.page-hero p{margin:0}.reading{width:min(860px,calc(100% - 40px));margin:0 auto}.reading h2{font-size:28px;line-height:1.35;color:var(--title);margin:38px 0 14px}.reading h3{font-size:21px;color:var(--title);margin:26px 0 10px}.reading p{margin:0 0 18px}.reading ul,.reading ol{padding-left:22px}.reading li+li{margin-top:8px}.article-wide{width:min(1120px,calc(100% - 40px));margin:0 auto}.content-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:26px;align-items:start}.sticky-note{position:sticky;top:126px}.notice-box{padding:22px;background:#f9fcff}.notice-box strong{color:var(--title)}.step-list{display:grid;gap:16px}.step-item{padding:22px;display:grid;grid-template-columns:44px 1fr;gap:14px}.step-no{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--pale);color:var(--blue);font-weight:900}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.tag-row a,.tag-row span{padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;color:var(--title);font-weight:700;font-size:14px}.subtle{color:var(--hint);font-size:14px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}.compare .white-panel h2{font-size:24px;margin-top:0}.review-name{font-weight:800;color:var(--title);margin-bottom:8px}.faq-list{display:grid;gap:16px}.faq-list article{background:#fff;border:1px solid #e4edf8;border-radius:18px;padding:24px;box-shadow:var(--shadow)}.faq-list h2{font-size:20px;margin:0 0 10px;color:var(--title)}.faq-list p{margin:0}.site-footer{background:#0E2338;color:#D5E6F6;padding:54px 0 100px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}.footer-grid h2{font-size:16px;color:#fff;margin:0 0 14px}.footer-grid a{display:block;color:#D5E6F6;margin:8px 0}.footer-grid a:hover{color:#fff}.footer-brand p{max-width:360px;color:#bcd0e3}.footer-logo img{height:38px;width:auto;max-width:168px;object-fit:contain}.footer-logo .logo-fallback{color:#fff}.footer-bottom{border-top:1px solid rgba(213,230,246,.18);margin-top:34px;padding-top:22px;display:flex;justify-content:space-between;gap:24px;font-size:14px;color:#bcd0e3}.floating-tools{position:fixed;right:18px;top:46%;transform:translateY(-50%);z-index:7000;display:grid;gap:8px;width:104px}.floating-tools a{background:#fff;color:var(--blue);border:1px solid var(--line);border-radius:12px;padding:10px 8px;text-align:center;font-weight:800;box-shadow:var(--shadow);font-size:14px}.floating-tools .float-primary{background:var(--blue);color:#fff}.mobile-bottom{display:none}.soft-band{background:#EAF3FF}.kicker-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.kicker-list article{padding:22px;background:rgba(255,255,255,.82);border:1px solid #d8e7f8;border-radius:18px}.kicker-list h3{margin:0 0 8px;color:var(--title)}
@media(min-width:1101px){.site-main{padding-right:72px}}
@media(max-width:1100px){.nav-core a{padding:8px 8px;font-size:14px}.header-actions{gap:6px}.login-btn,.register-btn{min-width:76px;padding:0 14px}.summary-grid{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}.floating-tools{display:none}}
@media(max-width:900px){.nav-core,.channel-strip,.register-btn{display:none}.menu-toggle{display:block}.header-inner{display:grid;grid-template-columns:42px minmax(0,1fr) 76px;gap:10px;min-height:64px;padding:0 14px}.site-logo{justify-content:center;min-width:0}.site-logo img{height:36px;max-width:150px}.header-actions{justify-content:flex-end}.login-btn{height:40px;min-width:72px;padding:0 14px}.mobile-drawer{display:block;position:fixed;left:0;top:0;bottom:0;width:min(86vw,328px);background:#fff;z-index:12000;transform:translateX(-102%);transition:transform .22s ease;overflow-y:auto;box-shadow:20px 0 50px rgba(16,48,84,.16)}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(14,35,56,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .2s ease}.drawer-open .mobile-drawer{transform:translateX(0)}.drawer-open .drawer-mask{opacity:1;pointer-events:auto}.drawer-open{overflow:hidden}.drawer-top{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid #edf3fb}.drawer-logo img{height:34px;width:auto;max-width:150px;object-fit:contain}.drawer-close{border:0;background:#eef5fe;width:40px;height:40px;border-radius:50%;font-size:26px;color:var(--title)}.drawer-body{padding:12px 16px 30px}.drawer-body section{padding:12px 0;border-bottom:1px solid #eef3f8}.drawer-body h2{font-size:13px;color:var(--hint);margin:0 0 6px}.drawer-body a{display:block;padding:9px 6px;color:var(--title);font-weight:700}.hero,.section{padding:58px 0}.hero-grid,.split,.content-grid{grid-template-columns:1fr}.hero-grid .media{order:2}.three-grid,.kicker-list{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:repeat(2,1fr)}.quote-grid{grid-template-columns:repeat(2,1fr)}.sticky-note{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:auto}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:8000;background:#fff;border-top:1px solid #dbe7f4;box-shadow:0 -8px 24px rgba(16,48,84,.08);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{height:58px;display:grid;place-items:center;color:var(--title);font-size:14px;font-weight:800}.site-footer{padding-bottom:120px}.compare{grid-template-columns:1fr}.page-hero{padding:50px 0 32px}}
@media(max-width:640px){body{font-size:16px}.shell,.reading,.article-wide{width:min(100% - 28px,1220px)}.hero,.section{padding:48px 0}.hero h1,.page-hero h1{font-size:clamp(28px,9vw,36px)}.hero p,.page-hero p{font-size:16px}.hero-grid,.split{gap:24px}.media.hero-media{height:205px}.media.article-media{height:228px}.media.card-media{height:168px}.summary-grid,.three-grid,.quote-grid,.qa-grid,.kicker-list{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.topic-card{padding:14px}.topic-card h3{font-size:17px}.topic-card p{font-size:14px}.section-head{display:block}.section-head p{margin-top:10px}.dual{grid-template-columns:1fr}.white-panel,.info-card,.qa-item,.quote-card{padding:20px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom p+p{margin-top:10px}.link-grid{grid-template-columns:repeat(2,1fr)}.step-item{grid-template-columns:38px 1fr}.step-no{width:38px;height:38px}.page-hero{padding-top:40px}}