:root{--ink:#172033;--muted:#5e687c;--line:#dfe4ed;--surface:#fff;--soft:#f5f7fb;--indigo:#4f46e5;--violet:#7c3aed;--emerald:#047857;--shadow:0 18px 50px rgba(24,32,51,.08)}
body.guide-page,html.apple-webkit-safe body.guide-page{background:#f8fafc!important;color:var(--ink)!important;opacity:1!important;visibility:visible!important}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:#f8fafc;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65;overflow-wrap:anywhere}a{color:var(--indigo);text-decoration-thickness:1px;text-underline-offset:3px}button,a{touch-action:manipulation}.skip-link{position:fixed;z-index:100;top:8px;left:8px;padding:12px 16px;background:#111827;color:#fff;border-radius:10px;transform:translateY(-150%)}.skip-link:focus{transform:none}.guide-header{position:sticky;z-index:50;top:0;border-bottom:1px solid rgba(223,228,237,.9);background:rgba(255,255,255,.94);backdrop-filter:blur(14px)}.header-inner{max-width:1120px;min-height:66px;margin:auto;padding:8px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:800;color:#111827;text-decoration:none;letter-spacing:-.03em}.guide-nav{display:flex;align-items:center;gap:4px}.guide-nav a{min-height:44px;padding:10px 12px;display:inline-flex;align-items:center;border-radius:11px;color:#485269;text-decoration:none;font-size:.92rem}.guide-nav a:hover{background:#f1f3f8;color:#312e81}.guide-shell{max-width:1120px;margin:auto;padding:0 24px}.hero{padding:70px 0 42px}.eyebrow{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px}.pill{display:inline-flex;align-items:center;min-height:34px;padding:6px 12px;border:1px solid #d9ddf7;border-radius:999px;background:#f5f5ff;color:#3730a3;font-size:.86rem;font-weight:700}.pill.neutral{border-color:var(--line);background:#fff;color:#596176;font-weight:500}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:46px;align-items:center}.hero h1{max-width:760px;margin:0 0 20px;font-size:clamp(2.35rem,5.5vw,4.6rem);line-height:1.04;letter-spacing:-.055em}.hero-lead{max-width:730px;margin:0;color:var(--muted);font-size:clamp(1.08rem,2vw,1.28rem)}.cta-row{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}.button{min-height:44px;padding:10px 17px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:12px;background:#fff;color:#293247;font:inherit;font-weight:750;text-decoration:none;cursor:pointer}.button.primary{border-color:var(--indigo);background:var(--indigo);color:#fff}.button.emerald{border-color:var(--emerald);background:var(--emerald);color:#fff}.button:hover{box-shadow:0 7px 18px rgba(42,50,73,.12);transform:translateY(-1px)}.hero-visual{min-height:340px;padding:25px;border:1px solid #d9def0;border-radius:26px;background:linear-gradient(145deg,#fff,#f1f3ff);box-shadow:var(--shadow);display:grid;align-content:center;gap:12px}.visual-step{display:flex;gap:14px;align-items:center;padding:11px 13px;border:1px solid #e3e6f0;border-radius:14px;background:rgba(255,255,255,.9);font-weight:700}.visual-step span{width:30px;height:30px;flex:0 0 30px;border-radius:50%;display:grid;place-items:center;background:#eef2ff;color:#4338ca}.layout{display:grid;grid-template-columns:minmax(0,760px) minmax(220px,1fr);gap:50px;align-items:start}.article{min-width:0}.toc{position:sticky;top:90px;padding:19px;border:1px solid var(--line);border-radius:18px;background:#fff}.toc strong{display:block;margin-bottom:8px}.toc a{display:block;padding:6px 8px;border-radius:8px;color:#5a6478;text-decoration:none;font-size:.9rem}.toc a:hover{background:#f3f4f8;color:#3730a3}.section{margin-bottom:62px}.section h2{margin:0 0 16px;font-size:clamp(1.7rem,3vw,2.35rem);line-height:1.18;letter-spacing:-.035em}.section h3{margin:0 0 8px;font-size:1.12rem}.section-intro{margin-top:-4px;color:var(--muted)}.card,.callout,.copy-card,details{border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:0 8px 30px rgba(26,34,53,.045)}.card{padding:22px}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.cards.four{grid-template-columns:repeat(2,minmax(0,1fr))}.card p:last-child,.card ul:last-child,.card ol:last-child{margin-bottom:0}.badge{display:inline-flex;margin-bottom:11px;padding:4px 9px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:.78rem;font-weight:800}.badge.green{background:#ecfdf5;color:#065f46}.timeline{list-style:none;padding:0;margin:22px 0;counter-reset:steps}.timeline li{position:relative;margin-left:17px;padding:0 0 24px 39px;border-left:2px solid #dfe3f6;counter-increment:steps}.timeline li:last-child{border-color:transparent;padding-bottom:0}.timeline li::before{content:counter(steps);position:absolute;left:-17px;top:-2px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#4f46e5;color:#fff;font-weight:800;font-size:.85rem}.callout{padding:18px 20px;border-color:#b9e8d2;background:#f0fdf8}.callout.violet{border-color:#ddd0ff;background:#f8f5ff}.callout strong{color:#065f46}.callout.violet strong{color:#5b21b6}.tabs{margin-top:20px}.tab-list{display:inline-flex;max-width:100%;padding:4px;border:1px solid var(--line);border-radius:14px;background:#f1f3f7}.tab-list button{min-height:44px;padding:8px 18px;border:0;border-radius:10px;background:transparent;color:#576176;font:inherit;font-weight:750;cursor:pointer}.tab-list button[aria-selected=true]{background:#fff;color:#312e81;box-shadow:0 3px 10px rgba(24,32,51,.1)}.tab-panel{margin-top:14px}.tab-panel[hidden]{display:none}.price{font-size:1.6rem;font-weight:850;letter-spacing:-.04em}.price-note{font-size:.85rem;color:var(--muted)}.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:#fff}table{width:100%;border-collapse:collapse;min-width:570px}th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f7f8fb;color:#384156;font-size:.88rem}tr:last-child td{border-bottom:0}.decision{display:grid;gap:10px}.decision div{padding:15px 17px;border-left:4px solid var(--violet);border-radius:0 13px 13px 0;background:#f7f5ff}.copy-card{padding:18px;margin:14px 0}.copy-card pre{margin:0 0 14px;white-space:pre-wrap;font:inherit;color:#263047}.copy-actions{display:flex;align-items:center;gap:12px}.copy-status{color:var(--emerald);font-weight:700}details{margin:11px 0;overflow:hidden}summary{min-height:50px;padding:14px 48px 14px 18px;position:relative;display:flex;align-items:center;font-weight:800;cursor:pointer;list-style:none}summary::-webkit-details-marker{display:none}summary::after{content:'+';position:absolute;right:19px;font-size:1.4rem;color:#5b21b6}details[open] summary::after{content:'−'}details>div{padding:0 18px 18px}.links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.links a{min-height:50px;padding:12px 15px;display:flex;align-items:center;border:1px solid var(--line);border-radius:13px;background:#fff;text-decoration:none;font-weight:700}.guide-footer{margin-top:70px;padding:34px 0;border-top:1px solid var(--line);background:#fff;color:var(--muted)}.footer-inner{max-width:1120px;margin:auto;padding:0 24px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.noscript-note{padding:12px 16px;background:#fff7ed;color:#9a3412}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:3px solid #f59e0b;outline-offset:3px}
@media(max-width:880px){.hero-grid,.layout{grid-template-columns:1fr}.hero-visual{min-height:auto}.toc{display:none}.cards.four{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.header-inner{padding:8px 16px;align-items:flex-start}.guide-nav{overflow-x:auto;max-width:calc(100vw - 105px)}.guide-nav a{white-space:nowrap;padding:10px 9px}.guide-shell{padding:0 16px}.hero{padding:42px 0 30px}.hero h1{font-size:2.35rem}.hero-grid{gap:28px}.hero-visual{padding:16px;border-radius:20px}.cards,.cards.four,.links{grid-template-columns:1fr}.card{padding:18px}.section{margin-bottom:48px}.footer-inner{padding:0 16px}.cta-row .button{width:100%}.tab-list{width:100%}.tab-list button{flex:1;padding:8px 10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.button:hover{transform:none}}