:root{--brand-red:#d9232e;--brand-red-dark:#b91c1c;--main-heading:#111;--main-text:#374151;--main-gradient:#111;--purple-gradient:#111;--pale-purple:#f3f4f6;--light-blue:#d1d5db;--breadcrumb:#111;--pale-bg:#f8fafc;--pale-bg-2:#f8fafc;--course-gold:#111;--hero-from:#111827;--hero-to:#111827;--deep-from:#111827;--deep-to:#111827;--white:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--font-sans:"Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;--container:1240px;--container-narrow:1040px;--radius:16px;--radius-pill:999px;--ease:cubic-bezier(.22, 1, .36, 1);--header-h:84px}*,:before,:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--main-text);background:var(--white);letter-spacing:.02em;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-size:14px;line-height:1.8;overflow-x:hidden}img,picture,svg,video{max-width:100%;display:block}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none}ul,ol{padding:0;list-style:none}h1,h2,h3,h4{font-weight:900;line-height:1.35}.container{width:min(100% - 40px, var(--container));margin-inline:auto}.container-narrow{width:min(100% - 40px, var(--container-narrow));margin-inline:auto}.section{padding-block:clamp(64px,8vw,120px);position:relative}.center{text-align:center}.eyebrow{letter-spacing:.18em;text-transform:uppercase;color:var(--main-heading);align-items:center;gap:10px;font-size:14px;font-weight:700;display:inline-flex}.eyebrow:before{content:"";background:var(--main-heading);width:28px;height:2px}.eyebrow.on-dark{color:#fff}.eyebrow.on-dark:before{background:#fff}.ghost-label{letter-spacing:.02em;color:#0000;-webkit-text-stroke:1.5px #3a34ff24;text-transform:capitalize;user-select:none;pointer-events:none;font-size:clamp(48px,9vw,116px);font-weight:900;line-height:1}.ghost-label.on-dark{-webkit-text-stroke-color:#ffffff29}.sec-title{letter-spacing:.01em;color:var(--ink);font-size:clamp(24px,3.2vw,40px);font-weight:900}.sec-title .accent{color:var(--main-heading)}.sec-lead{color:var(--muted);margin-top:20px;font-size:clamp(13px,1.45vw,15px);line-height:2}.on-dark .sec-title,.sec-title.on-dark{color:#fff}.on-dark .sec-lead,.sec-lead.on-dark{color:#ffffffd1}.btn{letter-spacing:.04em;transition:transform .3s var(--ease), box-shadow .3s var(--ease), opacity .3s var(--ease);border-radius:0;justify-content:center;align-items:center;gap:12px;padding:16px 30px;font-size:15px;font-weight:700;display:inline-flex;position:relative}.btn .arw{background:#ffffff38;border-radius:50%;flex:none;place-items:center;width:22px;height:22px;font-size:11px;display:grid}.btn:hover{transform:translateY(-2px)}.btn-gradient{background:var(--purple-gradient);color:#fff;box-shadow:0 12px 26px #2563eb47}.btn-gradient:hover{background:#374151;box-shadow:0 16px 34px #1111113d}.btn-white{color:var(--main-heading);background:#fff;box-shadow:0 12px 26px #0000001f}.btn-white .arw{background:var(--main-heading);color:#fff}.btn-outline{border:2px solid var(--main-heading);color:var(--main-heading);background:0 0}.btn-outline .arw{background:var(--main-heading);color:#fff}.btn-ghost-white{color:#fff;border:2px solid #fff9}.fade-in{opacity:0;transition:opacity .8s var(--ease), transform .8s var(--ease);transform:translateY(28px)}.fade-in.is-visible{opacity:1;transform:none}@media (prefers-reduced-motion:reduce){.fade-in{opacity:1;transition:none;transform:none}html{scroll-behavior:auto}}.ph{border-radius:var(--radius);color:#1a1a2e59;letter-spacing:.1em;background:linear-gradient(135deg,#3a34ff1f,#5ce1e624),repeating-linear-gradient(45deg,#00000008 0 12px,#0000 12px 24px);place-items:center;font-size:13px;font-weight:700;display:grid;position:relative;overflow:hidden}.ph.on-dark{color:#ffffff80;background:linear-gradient(135deg,#ffffff24,#5ce1e62e),repeating-linear-gradient(45deg,#ffffff0f 0 12px,#0000 12px 24px)}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.prose{color:#374151;font-size:15px;line-height:2}.prose>*+*{margin-top:1.4em}.prose h2{color:var(--ink);margin-top:2.4em;padding-left:16px;font-size:clamp(21px,2.3vw,28px);font-weight:900;line-height:1.5;position:relative}.prose h2:before{content:"";background:var(--main-gradient);border-radius:3px;width:5px;position:absolute;top:.18em;bottom:.18em;left:0}.prose h3{color:var(--ink);margin-top:1.8em;font-size:clamp(17px,1.8vw,21px);font-weight:800}.prose p{color:#374151}.prose a{color:#d85b26;text-underline-offset:3px;text-decoration:underline 1px}.prose a:hover{color:var(--brand-red)}.prose strong{color:var(--ink);font-weight:700}.prose ul,.prose ol{flex-direction:column;gap:.6em;padding-left:1.4em;display:flex}.prose ul{padding-left:0;list-style:none}.prose ul li{padding-left:1.6em;position:relative}.prose ul li:before{content:"";background:var(--main-gradient);border-radius:50%;width:8px;height:8px;position:absolute;top:.72em;left:0}.prose ol{counter-reset:li;padding-left:0;list-style:none}.prose ol li{counter-increment:li;padding-left:2.2em;position:relative}.prose ol li:before{content:counter(li);background:var(--main-gradient);color:#fff;border-radius:50%;place-items:center;width:1.5em;height:1.5em;font-size:13px;font-weight:700;display:grid;position:absolute;top:.1em;left:0}.prose blockquote{background:var(--pale-bg);border-left:4px solid var(--main-heading);color:var(--ink);border-radius:12px;margin-block:1.8em;padding:20px 24px;font-weight:500}.prose blockquote p{color:inherit;margin:0}.article-note{border:1px solid var(--line);background:#fafafa;gap:10px;margin-block:1.8em;padding:20px 22px;display:grid}.article-note>span{color:var(--brand-red);letter-spacing:.12em;font:800 10px Montserrat,sans-serif}.article-note>p{color:var(--ink);font-size:14px;line-height:1.9}.article-stat-card{border:1px solid var(--line);border-top:3px solid var(--brand-red);background:#fff;gap:14px;margin-block:2em;padding:clamp(22px,4vw,32px);display:grid;box-shadow:0 14px 34px #1118270f}.article-stat-card>span{color:var(--brand-red);letter-spacing:0;font:900 clamp(40px,7vw,68px)/1 Montserrat,sans-serif}.article-stat-card>p{color:var(--ink);font-size:clamp(16px,2vw,20px);font-weight:800;line-height:1.8}.article-stat-card>small{color:var(--muted);font-size:13px;line-height:1.75}.article-cta{border:1px solid var(--line);border-top:3px solid var(--brand-red);background:#f8f9f8;gap:12px;margin-block:2.2em;padding:clamp(24px,4vw,38px);display:grid}.article-cta>span{color:var(--brand-red);letter-spacing:.12em;font:800 11px Montserrat,sans-serif}.article-cta h2{color:var(--ink);margin:0;padding:0;font-size:clamp(21px,3vw,30px);line-height:1.45}.article-cta h2:before{display:none}.article-cta p{max-width:760px;color:var(--main-text);font-size:14px;line-height:1.9}.article-cta div{flex-wrap:wrap;gap:12px;margin-top:10px;display:flex}.article-cta a{background:var(--brand-red);color:#fff;justify-content:center;align-items:center;gap:10px;min-height:48px;padding:10px 18px;font-weight:800;text-decoration:none;display:inline-flex}.article-cta a:hover{color:#fff;background:var(--brand-red-dark)}.article-cta a.secondary{border:1px solid var(--ink);color:var(--ink);background:#fff}.article-cta a.secondary:hover{color:var(--brand-red);border-color:var(--brand-red)}.line-campaign{border:2px solid #172033;border-top:6px solid var(--brand-red);background:linear-gradient(135deg,#fff 0%,#fff7f4 100%);gap:16px;margin-block:2.4em;padding:clamp(24px,5vw,42px);display:grid;box-shadow:0 16px 36px #1118271a}.line-campaign__eyebrow{color:var(--brand-red);letter-spacing:.08em;font:900 12px Montserrat,sans-serif}.line-campaign h2{color:var(--ink);margin:0;padding:0;font-size:clamp(23px,3vw,32px);line-height:1.45}.line-campaign h2:before{display:none}.line-campaign__prices{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.line-campaign__prices p{border:1px solid var(--line);color:var(--muted);background:#fff;gap:6px;padding:16px;font-size:13px;display:grid}.line-campaign__prices strong{color:var(--brand-red);font-size:clamp(19px,2.3vw,24px)}.line-campaign ul{gap:7px;padding:0;list-style:none;display:grid}.line-campaign li{color:var(--muted);padding-left:1.3em;font-size:13px;line-height:1.7;position:relative}.line-campaign li:before{content:"※";color:var(--brand-red);position:absolute;left:0}.line-campaign a{background:var(--brand-red);color:#fff;justify-content:center;align-items:center;width:fit-content;min-height:52px;padding:12px 20px;font-weight:800;text-decoration:none;display:inline-flex}.line-campaign a:hover{color:#fff;background:var(--brand-red-dark)}.article-diagram{background:linear-gradient(145deg,#f8fafc,#eef5f7);border:1px solid #dfe5ec;border-radius:16px;gap:16px;margin-block:2em;padding:clamp(18px,4vw,30px);display:grid;overflow:hidden}.article-diagram__title{font-weight:900;line-height:1.5;color:var(--ink)!important;font-size:clamp(18px,3vw,24px)!important}.article-diagram__center,.article-diagram__result{text-align:center;background:#172033;border-radius:10px;padding:14px 18px;font-size:17px;font-weight:800;color:#fff!important}.article-diagram__grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:9px;display:grid}.article-diagram__grid span,.article-diagram__steps span{min-height:60px;color:var(--ink);text-align:center;overflow-wrap:anywhere;background:#fff;border:1px solid #dfe5ec;border-radius:10px;place-items:center;padding:10px;font-size:13px;font-weight:700;line-height:1.45;display:grid}.article-diagram__grid span:nth-child(3n+1),.article-diagram__steps span:nth-child(3n+1){border-top:3px solid #e06440}.article-diagram__grid span:nth-child(3n+2),.article-diagram__steps span:nth-child(3n+2){border-top:3px solid #327a9d}.article-diagram__grid span:nth-child(3n),.article-diagram__steps span:nth-child(3n){border-top:3px solid #477b64}.article-diagram--two{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:stretch}.article-diagram--two>.article-diagram__title,.article-diagram--two>.article-diagram__result{grid-column:1/-1}.article-diagram--two>div{text-align:center;background:#fff;border:1px solid #dfe5ec;border-radius:12px;gap:10px;padding:20px;display:grid}.article-diagram--two>div strong{color:#536070;font-size:13px}.article-diagram--two>div b{color:var(--ink);font-size:17px;line-height:1.6}.article-diagram--two>i{color:#e06440;align-self:center;font-size:32px;font-style:normal;font-weight:900}.article-diagram__steps{grid-template-columns:repeat(6,minmax(0,1fr));gap:9px;display:grid}.article-diagram--compare{grid-template-columns:repeat(2,minmax(0,1fr))}.article-diagram--compare>.article-diagram__title{grid-column:1/-1}.article-diagram--compare>div{background:#fff;border:1px solid #dfe5ec;border-top:4px solid #327a9d;gap:8px;padding:16px;display:grid}.article-diagram--compare>div:last-child{border-top-color:#477b64}.article-diagram--compare strong{color:var(--ink);font-size:18px}.article-diagram--compare span{color:#536070;font-size:14px}.article-diagram--compare b{color:#e06440;font-size:14px}.article-diagram--case small{color:#536070;font-size:12px;line-height:1.65}.article-checklist{border-top:1px solid var(--line);margin-block:1.8em;gap:0!important;padding:0!important;display:grid!important}.article-checklist li{border-bottom:1px solid var(--line);min-height:62px;color:var(--ink);grid-template-columns:34px minmax(0,1fr);align-items:center;gap:14px;font-size:clamp(16px,2vw,20px);line-height:1.55;padding:13px 0!important;display:grid!important}.article-checklist li:before{display:none!important}.article-checklist li>span{color:var(--brand-red);letter-spacing:.05em;font:800 12px Montserrat,sans-serif}.article-checklist li>strong{font-size:inherit;font-weight:700}.prose hr{border:none;border-top:1px solid var(--line);margin-block:2.4em}.prose img{border-radius:12px;margin-block:1.6em}.prose table{border-collapse:collapse;width:100%;margin-block:1.8em;font-size:14px;line-height:1.75;display:table}.prose th,.prose td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:14px 16px}.prose th{color:#fff;background:#111827;font-weight:800}.prose td{background:#fff}.article-cycle{border:1px solid var(--line);background:#f8f9f8;align-items:stretch;gap:10px;margin-block:1.8em;padding:18px;display:flex;overflow-x:auto}.article-cycle div{border-top:3px solid var(--brand-red);background:#fff;flex:1 0 150px;gap:7px;min-width:150px;padding:14px;display:grid}.article-cycle span{color:var(--brand-red);letter-spacing:.08em;font:800 11px Montserrat,sans-serif}.article-cycle strong{font-size:13px;line-height:1.55}.article-cycle>b{color:var(--brand-red);flex:none;place-items:center;font-size:18px;display:grid}.article-cycle--six div{flex-basis:114px;min-width:114px;padding:12px 10px}@media (width<=680px){body{font-size:15px;line-height:1.8}.container,.container-narrow{width:min(100% - 40px, var(--container))}.btn{min-height:52px;font-size:15px}.eyebrow{font-size:12px}.sec-lead,.prose{font-size:15px;line-height:1.8}.prose>*+*{margin-top:1.15em}.prose h2{margin-top:2em;padding-left:14px;font-size:22px;line-height:1.45}.prose h3{margin-top:1.7em;font-size:18px;line-height:1.5}.prose h4{margin-top:1.5em;font-size:17px;line-height:1.5}.prose blockquote{padding:18px 20px}.prose table{white-space:normal;font-size:14px;display:block;overflow-x:auto}.prose th,.prose td{min-width:150px;padding:12px}.article-cycle{margin-inline:-2px}.article-checklist li{grid-template-columns:28px minmax(0,1fr);gap:10px;min-height:56px;font-size:15px}.article-note{padding:18px}.article-cta{padding:24px 20px}.article-cta>span,.article-note>span,.article-cycle span{font-size:12px}.article-cta p,.article-note>p,.article-cycle strong{font-size:13px}.article-cta a{width:100%;min-height:54px;font-size:15px}.line-campaign__prices{grid-template-columns:1fr}.line-campaign a{width:100%}.article-diagram__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-diagram__steps,.article-diagram--two,.article-diagram--compare{grid-template-columns:1fr}.article-diagram--two>.article-diagram__title,.article-diagram--two>.article-diagram__result,.article-diagram--compare>.article-diagram__title{grid-column:auto}.article-diagram--two>i{justify-self:center;transform:rotate(90deg)}.article-stat-card>small{font-size:12px}}.prose code{background:var(--pale-bg);border-radius:6px;padding:2px 7px;font-size:.9em}