:root{--ink:#13252b;--muted:#62747b;--paper:#f7f9f8;--line:#dce4e3;--blue:#086ed1;--deep:#073461;--cyan:#20a7cf;--accent:#f3b542}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans SC",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}.wrap{width:min(1120px,calc(100% - 48px));margin:auto}.site-header{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1120px)/2));background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:10px}.brand span{width:30px;height:30px;display:grid;place-items:center;background:var(--blue);color:#fff;font:500 11px "DM Mono",monospace}.brand strong{font-size:15px}.site-header nav{display:flex;gap:28px;font-size:14px;color:#536269}.site-header nav a:hover,.header-action:hover{color:var(--blue)}.header-action{font-size:13px;font-weight:700;display:flex;gap:7px;align-items:center}.header-action svg{width:16px}.hero{height:650px;isolation:isolate;position:relative;color:#fff;overflow:hidden}.hero-image,.hero-shade{position:absolute;inset:0;width:100%;height:100%;z-index:-2}.hero-image{object-fit:cover}.hero-shade{z-index:-1;background:linear-gradient(90deg,rgba(1,46,91,.88),rgba(0,104,194,.59) 52%,rgba(0,61,119,.34)),linear-gradient(0deg,rgba(0,34,70,.65),transparent 48%)}.guide-version{height:42px;padding:12px max(24px,calc((100vw - 1120px)/2));background:rgba(7,109,209,.92);font:500 11px "DM Mono",monospace;letter-spacing:1px}.hero-content{padding-top:93px}.eyebrow{font:500 11px "DM Mono",monospace;letter-spacing:1px;color:#d2e8ff;margin:0 0 13px}.eyebrow.accent{color:#0879dc}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(48px,6vw,84px);line-height:1.05;letter-spacing:0;margin-bottom:16px}h1 span{font-size:.72em}.hero-copy{font-size:17px;max-width:460px;color:#eaf5ff;margin-bottom:27px}.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}.button{height:46px;display:inline-flex;align-items:center;gap:8px;padding:0 17px;border:1px solid transparent;font-size:14px;font-weight:700}.button svg{width:16px}.button-primary{background:#fff;color:var(--deep)}.button-primary:hover{background:var(--accent)}.button-quiet{border-color:rgba(255,255,255,.7)}.button-quiet:hover{background:rgba(255,255,255,.15)}.hero-stats{position:absolute;left:0;right:0;bottom:55px;padding-top:20px;border-top:1px solid rgba(255,255,255,.42);display:flex;gap:42px}.hero-stats div{display:grid;gap:2px}.hero-stats small{font-size:12px;color:#d3e7fa}.hero-stats b{font-size:28px;line-height:1.15}.ticker{position:absolute;bottom:0;background:rgba(0,113,211,.92);height:34px;line-height:34px;white-space:nowrap;font-size:13px;animation:slide 26s linear infinite}@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-35%)}}.quick-links{margin-top:0;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-top:0}.quick-links a{min-height:91px;display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:9px;padding:18px 20px;border-right:1px solid var(--line);font-size:15px;font-weight:700}.quick-links a:last-child{border:0}.quick-links a:hover{background:#eef7ff}.quick-links svg{color:var(--blue);width:20px}.quick-links small{font:12px "DM Mono",monospace;color:var(--muted)}.intro{padding:126px 0 104px;display:grid;grid-template-columns:.8fr 1.5fr;gap:50px}.intro h2,.section-heading h2,.closing h2{font-size:clamp(32px,4vw,49px);line-height:1.18;letter-spacing:0;margin-bottom:17px}.intro p:not(.eyebrow),.closing>div>p:not(.eyebrow){font-size:17px;color:var(--muted);max-width:630px}.guide{padding-bottom:110px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px}.section-heading h2{margin:0}.section-heading>p{font-size:13px;color:var(--muted);margin:0}.guide-grid{border-top:2px solid var(--ink)}.guide-item{border-bottom:1px solid var(--line)}.guide-toggle{width:100%;padding:21px 0;background:none;border:0;color:inherit;text-align:left;display:grid;grid-template-columns:82px 1fr 36px;align-items:center;cursor:pointer}.guide-number{font:14px "DM Mono",monospace;color:var(--blue)}.guide-toggle strong{font-size:20px;display:block}.guide-toggle small{font:11px "DM Mono",monospace;letter-spacing:.8px;color:var(--muted)}.guide-toggle svg{justify-self:end;transition:.25s}.guide-item.open .guide-toggle svg{color:var(--blue);transform:rotate(45deg)}.guide-detail{display:none;padding:0 20px 30px 82px}.guide-item.open .guide-detail{display:block}.lead{color:var(--muted);margin-bottom:16px}.answer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 20px}.answer-grid p{margin:0;color:var(--muted);font-size:14px;padding:15px 17px;background:#fff;border-left:3px solid #b9dcf7}.answer-grid b{color:var(--ink);display:block;margin-bottom:4px;font-size:15px}.notice-band{background:var(--deep);color:#fff;padding:26px 0}.notice-band .wrap{display:flex;align-items:center;gap:13px}.notice-band svg{width:20px;color:var(--accent);flex:none}.notice-band p{margin:0;color:#d8e8f4;font-size:14px}.closing{padding:106px 0;display:grid;grid-template-columns:1fr .55fr;gap:90px;align-items:center}.closing aside{border:1px solid var(--line);background:#fff;padding:35px;min-height:250px;display:flex;flex-direction:column;align-items:flex-start}.closing aside svg{color:var(--blue);width:42px;height:42px;margin-bottom:28px}.closing aside h3{font-size:23px;margin:0 0 4px}.closing aside p{color:var(--muted);margin:0}.closing aside span{font:12px "DM Mono",monospace;color:var(--blue);margin-top:auto}footer{background:#e9f0f1;padding:30px 0}footer .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}footer p{margin:0}@media(max-width:720px){.wrap{width:min(100% - 32px,1120px)}.site-header{height:58px;padding:0 16px}.site-header nav{display:none}.hero{height:610px}.guide-version{padding:12px 16px}.hero-content{padding-top:77px}.hero-stats{bottom:45px;gap:25px}.hero-stats b{font-size:23px}.ticker{font-size:12px}.quick-links{width:100%;grid-template-columns:repeat(2,1fr);border-left:0;border-right:0}.quick-links a{min-height:75px;padding:13px 16px;border-bottom:1px solid var(--line)}.quick-links a:nth-child(2){border-right:0}.intro,.closing{grid-template-columns:1fr;gap:24px}.intro{padding:76px 0 68px}.guide{padding-bottom:75px}.section-heading{align-items:start;flex-direction:column}.guide-toggle{grid-template-columns:55px 1fr 30px}.guide-toggle strong{font-size:18px}.guide-detail{padding:0 0 25px 55px}.answer-grid{grid-template-columns:1fr}.closing{padding:76px 0}.closing aside{min-height:210px}footer .wrap{flex-direction:column;align-items:flex-start;gap:10px}}