:root {
  --blue:#3f8fe5; --deep-blue:#2875c7; --light-blue:#eaf4ff; --bg:#ffffff; --gray-bg:#f4f7fb;
  --alt-bg:#eef3f9; --title:#1f2d3d; --text:#34495e; --muted:#6f7f90; --note:#8c99a8;
  --border:#d8e4f0; --line:#e5edf5; --shadow:0 12px 32px rgba(43,97,153,.10); --radius:16px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.78;overflow-x:hidden}
body.menu-open{overflow:hidden} img{max-width:100%;height:auto} a{color:#2f83d8} button,a{font:inherit} a:focus-visible,button:focus-visible{outline:3px solid rgba(63,143,229,.38);outline-offset:3px}
.skip-link{position:fixed;left:16px;top:-80px;z-index:20000;background:#fff;color:var(--deep-blue);padding:10px 16px;border-radius:8px;box-shadow:var(--shadow)}.skip-link:focus{top:14px}
.site-header{position:sticky;top:0;width:100%;z-index:9999;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);box-shadow:0 6px 20px rgba(43,97,153,.08)}
.header-inner{max-width:1240px;min-height:70px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}.site-logo{display:flex;align-items:center;flex:0 0 auto}.site-logo img{display:block;max-height:44px;width:auto}.nav-core{display:flex;align-items:center;gap:8px}.nav-core a{color:var(--text);text-decoration:none;padding:8px 10px;border-radius:8px;white-space:nowrap}.nav-core a:hover,.nav-core a.active{color:var(--deep-blue);background:var(--light-blue)}
.header-actions{display:flex;align-items:center;gap:10px}.main-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:10px;text-decoration:none;transition:.2s ease;position:relative;z-index:2;pointer-events:auto;touch-action:manipulation}.main-btn{color:#fff;background:var(--blue);box-shadow:0 10px 24px rgba(63,143,229,.22)}.main-btn:hover{color:#fff;background:#2f7fd3;transform:translateY(-1px)}.secondary-btn{color:var(--deep-blue);background:#fff;border:1px solid var(--border)}.secondary-btn:hover{border-color:var(--blue);background:var(--light-blue)}
.menu-button{width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}.menu-button span{width:20px;height:2px;background:var(--title);border-radius:2px}
.drawer-overlay{position:fixed;inset:0;z-index:10000;background:rgba(20,43,70,.38);opacity:0;transition:opacity .2s}.drawer-overlay.show{opacity:1}.drawer-menu{position:fixed;right:0;top:0;width:min(390px,88vw);height:100vh;z-index:10001;background:#fff;box-shadow:-20px 0 50px rgba(31,45,61,.18);padding:20px;transform:translateX(104%);transition:transform .24s ease;overflow-y:auto}.drawer-menu.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}.drawer-close{width:44px;height:44px;border:0;border-radius:10px;background:var(--gray-bg);font-size:28px;line-height:1;cursor:pointer}.drawer-links{display:grid;margin:18px 0}.drawer-links a{padding:11px 12px;color:var(--text);text-decoration:none;border-bottom:1px solid var(--line);border-radius:8px}.drawer-links a:hover{background:var(--light-blue);color:var(--deep-blue)}.drawer-download{width:100%}
.container{width:min(1160px,calc(100% - 40px));margin:0 auto}.narrow{width:min(860px,calc(100% - 40px));margin:0 auto}.section{padding:84px 0}.section-light{background:var(--gray-bg)}.section-alt{background:var(--alt-bg)}.section-title{font-size:clamp(28px,4vw,42px);line-height:1.25;margin:0 0 14px;color:var(--title)}.section-lead{max-width:780px;margin:0 0 34px;color:var(--muted);font-size:17px}.eyebrow{display:inline-block;margin-bottom:14px;color:var(--deep-blue);font-weight:700;letter-spacing:.08em}.text-link{color:#2f83d8;font-weight:700;text-decoration:none}.text-link:hover{text-decoration:underline}.muted{color:var(--muted)}
.hero{position:relative;overflow:hidden;padding:82px 0 74px;background:linear-gradient(180deg,#fff 0%,#f7fbff 100%)}.hero:before,.hero:after{content:"";position:absolute;border-radius:999px;background:rgba(63,143,229,.08);pointer-events:none}.hero:before{width:320px;height:320px;right:-130px;top:-150px}.hero:after{width:220px;height:220px;left:-110px;bottom:-110px}.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:64px}.hero h1{font-size:clamp(42px,6vw,68px);line-height:1.08;margin:0 0 20px;color:var(--title);letter-spacing:-.03em}.hero-subtitle{font-size:clamp(21px,3vw,29px);line-height:1.42;color:var(--deep-blue);font-weight:700;margin:0 0 18px}.hero-copy{font-size:17px;color:var(--muted);margin:0 0 28px}.hero-actions,.inline-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px}.hero-links a{font-size:14px;text-decoration:none}.hero-points{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:28px 0 0;padding:0;list-style:none}.hero-points li{background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:14px;color:var(--text)}.hero-visual{position:relative;display:flex;justify-content:center}.hero-visual:before{content:"";position:absolute;width:76%;height:76%;border-radius:50%;background:var(--light-blue);filter:blur(4px);top:12%;left:12%}.hero-visual img{position:relative;max-height:580px;object-fit:contain;display:block;filter:drop-shadow(0 28px 38px rgba(40,117,199,.18))}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.info-card,.category-card,.review-card,.faq-card,.article-card,.notice-card{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 8px 24px rgba(43,97,153,.06)}.info-card{padding:24px}.info-card h3{margin:0 0 8px;color:var(--title)}.info-card p{margin:0;color:var(--muted)}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.category-card{padding:28px;text-decoration:none;color:inherit;transition:.2s ease;min-height:190px}.category-card:hover{transform:translateY(-4px);border-color:var(--blue);box-shadow:var(--shadow)}.category-card h3{margin:0 0 8px;color:var(--deep-blue);font-size:22px}.category-card p{margin:0 0 18px;color:var(--muted)}.category-card.full{grid-column:1/-1;min-height:auto}.category-card .text-link{display:inline-block}
.split{display:grid;grid-template-columns:1fr 1fr;gap:58px;align-items:center}.split.reverse .feature-image{order:2}.feature-image{display:flex;justify-content:center}.feature-image img,.content-img{max-height:420px;object-fit:contain;display:block}.prose h2,.prose h3{color:var(--title);line-height:1.35}.prose h2{font-size:30px;margin:0 0 18px}.prose h3{font-size:21px;margin:28px 0 8px}.prose p{margin:0 0 18px}.prose ul,.prose ol{padding-left:22px}.prose li{margin:8px 0}.risk-box,.tip-box,.notice-box{border-left:4px solid var(--blue);background:var(--light-blue);padding:18px 20px;border-radius:0 12px 12px 0;margin:24px 0}.risk-box{border-left-color:#d77a1d;background:#fff8ef}.risk-box strong,.tip-box strong{color:var(--title)}
.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.article-card{padding:30px}.article-card h3{margin-top:0;color:var(--title);font-size:24px}.article-card img{height:210px;width:100%;object-fit:contain;margin-bottom:18px}.article-card p:last-child{margin-bottom:0}.badge{display:inline-flex;align-items:center;min-height:30px;padding:0 11px;border-radius:999px;background:var(--light-blue);color:var(--deep-blue);font-size:13px;font-weight:700;margin-bottom:12px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.review-card{padding:24px}.review-card p{margin:0;color:var(--text)}.review-card .review-meta{display:block;margin-top:14px;color:var(--muted);font-size:14px}
.faq-list{display:grid;gap:14px}.faq-card{padding:0;overflow:hidden}.faq-card details{padding:0}.faq-card summary{cursor:pointer;list-style:none;padding:20px 24px;font-weight:700;color:var(--title);position:relative}.faq-card summary::-webkit-details-marker{display:none}.faq-card summary:after{content:"+";position:absolute;right:22px;top:17px;font-size:24px;color:var(--blue)}.faq-card details[open] summary:after{content:"−"}.faq-answer{padding:0 24px 22px;color:var(--muted)}
.page-hero{padding:70px 0 58px;background:linear-gradient(180deg,#fff,#f4f8fd);border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(36px,5vw,56px);line-height:1.15;margin:0 0 18px;color:var(--title)}.page-hero p{max-width:780px;font-size:18px;color:var(--muted);margin:0}.breadcrumbs{font-size:14px;margin-bottom:18px}.breadcrumbs a{text-decoration:none}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}.article-main h2{margin-top:46px;scroll-margin-top:100px}.article-main h2:first-child{margin-top:0}.side-nav{position:sticky;top:100px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px}.side-nav h2{font-size:17px;margin:0 0 12px}.side-nav a{display:block;padding:8px 0;text-decoration:none;border-bottom:1px solid var(--line);font-size:14px}.side-nav a:last-child{border-bottom:0}
.notice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.notice-card{padding:26px}.notice-card h3{margin:0 0 10px;color:var(--title)}.notice-card p{margin:0;color:var(--muted)}.notice-meta{display:flex;gap:10px;align-items:center;margin-bottom:12px;color:var(--note);font-size:13px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.contact-card{padding:28px;border:1px solid var(--border);background:#fff;border-radius:14px}.contact-card h2{margin-top:0;color:var(--title)}
.cta-band{background:var(--blue);color:#fff;border-radius:22px;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-band h2{margin:0 0 8px;color:#fff}.cta-band p{margin:0;color:rgba(255,255,255,.85)}.cta-band .main-btn{background:#fff;color:var(--deep-blue);box-shadow:none}
.site-footer{background:#438ddf;color:#fff}.footer-inner{width:min(1160px,calc(100% - 40px));margin:0 auto;padding:58px 0 34px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:38px}.footer-brand img{filter:brightness(0) invert(1);max-height:44px;width:auto}.footer-brand p{max-width:420px;color:rgba(255,255,255,.84)}.footer-download{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;background:#fff;color:var(--deep-blue);border-radius:9px;text-decoration:none;font-weight:700}.footer-col h2{font-size:16px;color:#fff;margin:0 0 14px}.footer-col a{display:block;color:rgba(255,255,255,.86);text-decoration:none;padding:5px 0}.footer-col a:hover{color:#fff;text-decoration:underline}.footer-risk{width:min(1160px,calc(100% - 40px));margin:0 auto;padding:20px 0;border-top:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.82);font-size:14px}.footer-bottom{text-align:center;padding:18px 20px;border-top:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.76);font-size:14px}
@media (max-width:1020px){.nav-core{display:none}.info-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.review-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr}.side-nav{position:static}.footer-inner{grid-template-columns:2fr 1fr 1fr}.footer-col:last-child{grid-column:2/4}.hero-grid{gap:34px}}
@media (max-width:768px){.header-inner{min-height:62px;padding:0 14px;gap:8px}.site-logo img{max-height:36px;max-width:150px}.header-actions{gap:7px}.header-download{min-height:44px;padding:0 13px;font-size:14px}.section{padding:58px 0}.container,.narrow{width:min(100% - 32px,1160px)}.hero{padding:52px 0 48px}.hero-grid,.split{grid-template-columns:1fr}.hero-visual{margin-top:10px}.hero-visual img{max-height:430px}.hero h1{font-size:42px}.hero-points{grid-template-columns:1fr}.info-grid,.category-grid,.dual-grid,.review-grid,.notice-grid,.contact-grid{grid-template-columns:1fr}.category-card.full{grid-column:auto}.split.reverse .feature-image{order:0}.article-card{padding:24px}.page-hero{padding:48px 0 42px}.article-layout{gap:28px}.cta-band{padding:30px;align-items:flex-start;flex-direction:column}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-col:last-child{grid-column:auto}}
@media (max-width:480px){.header-download{padding:0 11px}.site-logo img{max-width:125px}.menu-button{width:44px;min-width:44px}.hero-actions .main-btn,.hero-actions .secondary-btn,.inline-actions .main-btn,.inline-actions .secondary-btn{width:100%}.footer-inner{grid-template-columns:1fr}.footer-col:last-child{grid-column:auto}.cta-band{border-radius:14px}.category-card{min-height:auto}.page-hero h1{font-size:36px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}