:root{--navy:#07366d;--blue:#1167b9;--sky:#eaf5ff;--ink:#17263a;--muted:#64748b;--line:#dbe7f2;--white:#fff;--shadow:0 10px 30px rgba(20,65,105,.09);--radius:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic UI","Noto Sans JP",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%}
.site-header{height:68px;padding:0 max(20px,env(safe-area-inset-left));display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(219,231,242,.75);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:10px}.brand-mark{flex:0 0 40px;width:40px;height:40px;border-radius:50%;background:#eaf5ff url("line-profile-icon-640.png") center 18%/cover no-repeat;display:block;font-size:0;box-shadow:0 2px 8px rgba(7,54,109,.16);border:1px solid #d5e8f7}.brand strong{display:block;font-size:14px;letter-spacing:.06em}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:.12em}.header-link{width:44px;height:44px;display:grid;place-content:center;gap:5px;border-radius:50%;background:#f4f8fb}.header-link span{display:block;width:20px;height:2px;background:var(--navy);border-radius:2px}
.home-hero{padding:48px 22px 38px;background:radial-gradient(circle at 85% 12%,#d5efff 0,transparent 34%),linear-gradient(155deg,#f9fcff 8%,#e9f5ff 100%);text-align:center;overflow:hidden}.eyebrow{display:inline-block;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.16em}.home-hero h1,.page-hero h1{margin:13px 0 15px;color:var(--navy);font-size:clamp(29px,8vw,42px);line-height:1.4;letter-spacing:.02em}.home-hero h1 em{color:var(--blue);font-style:normal;background:linear-gradient(transparent 68%,#bce4ff 0)}.home-hero p{margin:0 auto;color:#41556e;font-size:14px;max-width:560px}.hero-points{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:26px}.hero-points span{padding:6px 10px;background:rgba(255,255,255,.8);border:1px solid #d3e5f4;border-radius:999px;color:var(--navy);font-size:11px;font-weight:700}.hero-points span:before{content:"✓";color:#38a169;margin-right:4px}
.home-hero h1{font-size:clamp(22px,7vw,42px);letter-spacing:.01em}.home-hero h1 .hero-line{display:block;white-space:nowrap}
.section{padding:52px 20px}.home-section{max-width:760px;margin:auto}.section-heading{margin-bottom:24px}.section-heading h2,.section>h2{margin:5px 0 0;color:var(--navy);font-size:26px;line-height:1.45}.home-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.feature-card{min-height:226px;padding:20px 13px 0;border:1px solid currentColor;border-radius:20px;display:flex;align-items:center;text-align:center;flex-direction:column;position:relative;overflow:hidden;background:#fff;box-shadow:0 7px 20px rgba(18,65,106,.06);transition:transform .2s,box-shadow .2s}.feature-card:active{transform:scale(.98)}.feature-icon{width:70px;height:70px;border-radius:50%;display:grid;place-items:center;font-size:34px;font-weight:800;margin:2px auto 14px;background:color-mix(in srgb,currentColor 12%,white)}.feature-card strong{font-size:17px;line-height:1.4}.feature-card small{color:#526477;font-size:11px;margin-top:6px;line-height:1.6}.card-action{width:calc(100% + 26px);margin-top:auto;padding:9px 6px;color:#fff;background:currentColor;font-size:13px;font-weight:800}.card-action b{display:inline-grid;place-items:center;background:#fff;color:currentColor;width:20px;height:20px;border-radius:50%;font-size:20px;line-height:1}.recommend{position:absolute;left:-35px;top:12px;width:120px;transform:rotate(-45deg);color:#fff;background:#0757a6;font-size:9px;font-weight:800;padding:3px}.blue{color:#095ba9;background:linear-gradient(145deg,#fff,#eef7ff)}.green{color:#288443;background:linear-gradient(145deg,#fff,#f0faef)}.orange{color:#ef720d;background:linear-gradient(145deg,#fff,#fff7ea)}.purple{color:#6554a6;background:linear-gradient(145deg,#fff,#f5f2ff)}.coral{color:#e75f65;background:linear-gradient(145deg,#fff,#fff2f1)}.teal{color:#168092;background:linear-gradient(145deg,#fff,#eef9fa)}
.soft-section{background:#f2f8fd;text-align:center}.soft-section>p{max-width:540px;margin:14px auto;color:#53677d;font-size:14px}.info-note{max-width:520px;margin:26px auto 0;padding:17px;display:flex;gap:12px;text-align:left;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.info-note>span{font-size:24px}.info-note p{margin:0;font-size:13px}.info-note strong{color:var(--navy)}
.page-hero{padding:42px 20px 38px;background:linear-gradient(155deg,#f8fcff,#edf7ff);text-align:center}.page-hero p{margin:0 auto;max-width:580px;color:#53677d;font-size:14px}.page-hero .hero-symbol{width:74px;height:74px;border-radius:24px;margin:0 auto 17px;display:grid;place-items:center;background:#fff;color:var(--blue);font-size:34px;box-shadow:var(--shadow)}.content{max-width:780px;margin:auto;padding:44px 20px 70px}.content-section{margin-bottom:52px}.content-title{margin:0 0 6px;color:var(--navy);font-size:23px}.content-lead{margin:0 0 22px;color:var(--muted);font-size:14px}.card-list{display:grid;gap:12px}.nav-card,.plain-card{display:flex;align-items:center;gap:14px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 5px 18px rgba(20,65,105,.05)}.nav-card .mini-icon{flex:0 0 42px;width:42px;height:42px;border-radius:13px;background:var(--sky);color:var(--blue);display:grid;place-items:center;font-size:20px;font-weight:800}.nav-card div{min-width:0}.nav-card strong{display:block;color:var(--navy);font-size:15px}.nav-card small{display:block;color:var(--muted);font-size:12px}.nav-card:after{content:"›";margin-left:auto;color:var(--blue);font-size:28px}.plain-card{display:block}.plain-card h3{margin:0 0 6px;color:var(--navy);font-size:16px}.plain-card p{margin:0;color:#53677d;font-size:13px}.tag{display:inline-block;margin-bottom:8px;padding:3px 9px;border-radius:999px;background:#edf6ff;color:var(--blue);font-size:10px;font-weight:800}.sample-tag{background:#fff3d6;color:#985f00}.cta-box{padding:27px 20px;background:linear-gradient(145deg,#07366d,#096cbd);border-radius:24px;text-align:center;color:#fff;box-shadow:0 15px 35px rgba(7,54,109,.2)}.cta-box h2{margin:0 0 8px;font-size:22px}.cta-box p{margin:0 0 20px;font-size:13px;opacity:.88}.button{min-height:52px;padding:13px 20px;border:0;border-radius:14px;background:#fff;color:var(--navy);display:inline-flex;align-items:center;justify-content:center;font-weight:800;box-shadow:0 5px 12px rgba(0,0,0,.1)}.button.primary{background:var(--blue);color:#fff}.button.wide{width:100%}.button.disabled{opacity:.78}.notice{padding:16px;border-left:4px solid #f0a51a;border-radius:10px;background:#fff8e8;color:#705321;font-size:12px}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:7px 11px;border-radius:999px;background:#eef6fc;color:var(--navy);font-size:12px;font-weight:700}.steps{counter-reset:step;display:grid;gap:12px}.step{position:relative;padding:20px 18px 20px 68px;border:1px solid var(--line);border-radius:18px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:20px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800}.step h3{margin:0;color:var(--navy);font-size:15px}.step p{margin:4px 0 0;color:var(--muted);font-size:13px}.faq details{border-bottom:1px solid var(--line);padding:16px 2px}.faq summary{cursor:pointer;color:var(--navy);font-weight:700;font-size:14px;list-style:none}.faq summary:after{content:"＋";float:right;color:var(--blue)}.faq details[open] summary:after{content:"−"}.faq p{margin:10px 0 0;color:var(--muted);font-size:13px}.profile-box{padding:24px;background:#f2f8fd;border-radius:22px}.profile-box h3{margin:0;color:var(--navy)}.profile-box ul{padding-left:1.2em;margin-bottom:0;color:#53677d;font-size:13px}
.site-footer{padding:35px 20px calc(35px + env(safe-area-inset-bottom));background:#062c59;color:#fff;text-align:center}.site-footer strong{letter-spacing:.08em}.site-footer p{margin:3px 0 15px;font-size:11px;opacity:.75}.site-footer small{font-size:10px;opacity:.5}.toast{position:fixed;left:50%;bottom:24px;z-index:50;transform:translate(-50%,20px);width:calc(100% - 40px);max-width:480px;padding:13px 15px;border-radius:12px;background:#17263a;color:#fff;text-align:center;font-size:12px;opacity:0;pointer-events:none;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(min-width:680px){.site-header{padding-left:32px;padding-right:32px}.home-hero{padding-top:70px;padding-bottom:55px}.home-grid{grid-template-columns:repeat(3,1fr)}.feature-card{min-height:250px}.feature-card strong{font-size:19px}.feature-card small{font-size:12px}.content{padding-top:56px}.card-list.two-col{grid-template-columns:repeat(2,1fr)}}
@media(max-width:370px){.feature-card{min-height:215px;padding-left:8px;padding-right:8px}.feature-icon{width:60px;height:60px}.feature-card strong{font-size:15px}.feature-card small{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.article-body{max-width:720px}.article-body p{color:#53677d;font-size:14px}.article-body strong{color:var(--navy)}.article-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:38px;color:var(--muted);font-size:11px}.number-highlight{margin-top:16px;padding:20px;border-radius:18px;background:#edf7ff;text-align:center}.number-highlight strong{display:block;color:var(--blue);font-size:26px}.number-highlight span{display:block;color:var(--muted);font-size:11px}.number-highlight.large strong{font-size:36px}.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}.check-list li{position:relative;padding:16px 16px 16px 50px;border:1px solid var(--line);border-radius:16px}.check-list li:before{content:"✓";position:absolute;left:17px;top:17px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#e7f8ed;color:#259451;font-weight:800}.check-list strong,.check-list span{display:block}.check-list span{margin-top:3px;color:var(--muted);font-size:12px}.source-note{padding:20px;border-radius:16px;background:#f7f9fb}.source-note .content-title{font-size:16px}.source-note p{font-size:11px}.source-note a{color:var(--blue);text-decoration:underline}
.comparison-list{margin-top:14px;border:1px solid var(--line);border-radius:16px;overflow:hidden}.comparison-list div{display:grid;grid-template-columns:92px 1fr;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line);font-size:12px}.comparison-list div:last-child{border-bottom:0}.comparison-list strong{color:var(--navy)}.comparison-list span{color:var(--muted)}
.article-body .cta-box p{color:#f4f9ff;opacity:1}