:root{--bg:#f3f5f8;--surface:#fff;--surface-soft:#e9edf3;--text:#16191f;--muted:#68717e;--line:#dce1e8;--blue:#2568d9;--blue-soft:#dceaff;--navy:#101722;--radius:22px;--shadow:0 20px 50px rgba(36,48,68,.08);font-family:"Segoe UI Variable","Yu Gothic UI","Noto Sans JP",system-ui,sans-serif;color:#16191f;background:var(--bg);scroll-behavior:smooth}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.skip-link{position:fixed;z-index:99;top:12px;left:12px;padding:8px 14px;border-radius:10px;background:#fff;transform:translateY(-150%)}.skip-link:focus{transform:none}
.sidebar{position:fixed;inset:0 auto 0 0;z-index:10;width:260px;padding:34px 22px 26px;border-right:1px solid var(--line);background:rgba(247,248,250,.88);backdrop-filter:blur(18px);display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:13px;padding:0 12px 34px}.brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#3780ed,#1853b8);box-shadow:0 8px 20px rgba(37,104,217,.24);position:relative;overflow:hidden}.brand-mark:before{content:"";position:absolute;width:28px;height:28px;border-radius:50%;background:#fff;left:7px;top:8px}.brand-mark:after{content:"";position:absolute;width:28px;height:28px;border-radius:50%;background:#2b70dc;left:14px;top:3px}.brand-mark span{position:absolute;z-index:2;width:4px;height:4px;background:#bbdcff;border-radius:50%;right:7px;top:8px}.brand strong,.brand small{display:block}.brand strong{font-size:1.1rem;line-height:1.25;letter-spacing:.01em}.brand small{font-size:.74rem;color:var(--muted);letter-spacing:.08em}.nav-list{display:grid;gap:5px}.nav-item{display:flex;align-items:center;gap:13px;min-height:48px;padding:8px 14px;border-radius:13px;color:#5c6572;font-weight:550;transition:.2s ease}.nav-item:hover{background:#edf1f6;color:#242933}.nav-item.is-active{background:#e1ebfa;color:#185bbb;box-shadow:inset 3px 0 #2b70dc}.icon{font-family:system-ui;width:24px;text-align:center;font-size:1.15rem}.sidebar-note{margin-top:auto;padding:15px 13px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.62);display:flex;gap:11px;align-items:center}.sidebar-note strong,.sidebar-note small{display:block}.sidebar-note strong{font-size:.78rem}.sidebar-note small{color:var(--muted);font-size:.7rem}.status-dot{width:9px;height:9px;border-radius:50%;background:#34b27b;box-shadow:0 0 0 4px #dff4ea}
main{margin-left:260px;overflow:hidden}.hero{min-height:680px;padding:115px clamp(45px,7vw,110px) 80px;position:relative;display:flex;flex-direction:column;justify-content:center}.eyebrow,.kicker{font-size:.75rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#5375a5}.eyebrow{display:flex;align-items:center;gap:9px}.eyebrow span{width:26px;height:2px;background:#3480ee}.hero h1{font-size:clamp(3.6rem,7vw,7.4rem);line-height:.98;letter-spacing:-.065em;margin:24px 0 27px;max-width:850px;font-weight:700}.hero h1 em{font-style:normal;color:var(--blue)}.hero-copy{font-size:1.02rem;color:#56606d;margin:0;max-width:520px}.hero-actions{display:flex;gap:12px;margin-top:36px}.button{min-height:48px;border-radius:13px;padding:10px 18px;display:inline-flex;align-items:center;justify-content:center;gap:22px;font-weight:650;font-size:.9rem}.button-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(37,104,217,.22)}.button-primary:hover{background:#175abf;transform:translateY(-1px)}.button-ghost{background:#fff;border:1px solid var(--line)}.hero-orbit{position:absolute;right:-30px;top:75px;width:430px;height:430px;opacity:.92}.orbit-ring{position:absolute;border:1px solid #d3dae5;border-radius:50%;inset:20px;transform:rotate(-18deg)}.ring-two{inset:80px -35px;transform:rotate(32deg)}.orbit-ring:before{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#74a9f6;top:38px;left:71px;box-shadow:0 0 0 7px rgba(72,139,236,.10)}.orbit-core{position:absolute;width:118px;height:118px;right:108px;top:145px;border-radius:38% 62% 57% 43%/42% 40% 60% 58%;background:linear-gradient(145deg,#fff,#dfe8f5);box-shadow:inset -18px -18px 35px #c8d5e7,0 24px 60px rgba(52,78,113,.16);display:grid;place-items:center}.orbit-core span{font-size:1.35rem;font-weight:800;color:#4d6f9d;letter-spacing:.04em}.star{position:absolute;font-style:normal;color:#6ea5ef}.star-a{top:55px;right:90px;font-size:1.7rem}.star-b{bottom:43px;left:68px}
.section{padding:86px clamp(38px,6vw,90px);border-top:1px solid var(--line)}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:34px}.section-heading h2{font-size:clamp(2rem,3.3vw,3.25rem);line-height:1.1;letter-spacing:-.045em;margin:8px 0 0}.text-link{font-size:.84rem;font-weight:700;color:#426895;padding:8px 0}.text-link:hover span{display:inline-block;transform:translate(2px,-2px)}
.article-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:18px}.article-card{background:var(--surface);border:1px solid #e0e4e9;border-radius:var(--radius);box-shadow:0 14px 30px rgba(28,42,62,.05);overflow:hidden;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.featured{grid-row:span 2;display:grid;grid-template-rows:220px 1fr}.article-visual{margin:12px 12px 0;border-radius:15px;background:#172130;position:relative;padding:64px 52px;overflow:hidden}.visual-server:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 20%,rgba(59,139,238,.33),transparent 38%),linear-gradient(135deg,transparent,rgba(54,116,190,.1))}.terminal-line{position:relative;display:block;width:62%;height:7px;background:#6996c8;border-radius:8px;margin-bottom:16px;opacity:.75}.terminal-line:before{content:"$";color:#5ee3b3;position:absolute;left:-22px;top:-9px;font-family:monospace;font-size:1rem}.terminal-line.short{width:40%}.article-visual i{position:absolute;bottom:35px;left:50px;color:#7dbae9;font-family:monospace;animation:blink 1.1s steps(1) infinite}@keyframes blink{50%{opacity:0}}.article-body{padding:27px 30px}.meta{display:flex;align-items:center;gap:12px;color:#9098a3;font-size:.72rem}.tag{background:#e5f4ee;color:#24835f;border-radius:7px;padding:3px 8px;font-weight:750;letter-spacing:.08em}.tag-blue{background:#e5efff;color:#2769c7}.tag-violet{background:#eee9ff;color:#7855b8}.article-body h3{font-size:1.35rem;line-height:1.45;letter-spacing:-.02em;margin:16px 0 9px}.compact .article-body h3{font-size:1.08rem}.article-body p{margin:0 0 21px;color:var(--muted);font-size:.88rem}.article-body>a{color:#3468aa;font-size:.8rem;font-weight:700}
#astro{background:#101722;color:#f5f7fa;border-top:0}.light .kicker{color:#72a8ef}.light .text-link{color:#9bc2f5}.astro-feature{border-radius:25px;overflow:hidden;position:relative;min-height:480px;background:#080c12}.astro-feature>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.astro-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(7,12,18,.9))}.astro-info{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:32px 38px;display:flex;align-items:flex-end;justify-content:space-between}.astro-info span{font-size:.7rem;letter-spacing:.12em;color:#a9bbd0}.astro-info h3{font-size:1.7rem;margin:4px 0 0}.astro-info dl{display:flex;gap:35px;margin:0}.astro-info dl div{display:grid}.astro-info dt{font-size:.66rem;text-transform:uppercase;letter-spacing:.12em;color:#788a9f}.astro-info dd{margin:2px 0 0;font-size:.82rem}.astro-strip{display:grid;grid-template-columns:1fr 1fr .75fr;gap:14px;margin-top:14px}.astro-strip figure,.astro-more{margin:0;height:165px;border-radius:18px;overflow:hidden;position:relative;background:#192332}.astro-strip figure:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 35%,rgba(6,10,16,.75))}.astro-strip figure img{width:100%;height:100%;object-fit:cover}.astro-strip figure:nth-child(1) img{object-position:69% 62%;transform:scale(1.5)}.astro-strip figure:nth-child(2) img{object-position:15% 44%;transform:scale(1.35)}.astro-strip figcaption{position:absolute;z-index:1;left:20px;bottom:14px;font-weight:650}.astro-strip figcaption span{display:block;font-size:.68rem;color:#9bacbf;font-weight:400}.astro-more{padding:22px;background:linear-gradient(145deg,#1b2e49,#162235);display:grid;grid-template-columns:1fr auto;align-content:center}.astro-more strong{font-size:2.8rem;line-height:1;color:#82b5f5}.astro-more>span{font-size:.7rem;color:#9fb0c4;line-height:1.4}.astro-more a{position:absolute;right:18px;top:18px;color:#8fbdf4}
.project-list{display:grid;gap:10px}.project-row{background:#fff;border:1px solid var(--line);border-radius:17px;min-height:104px;padding:17px 23px;display:grid;grid-template-columns:38px 54px 1fr auto 28px;gap:17px;align-items:center;transition:.2s}.project-row:hover{border-color:#adc6e9;transform:translateX(3px)}.project-number{font-size:.7rem;color:#9ba3ae}.project-icon{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:1.35rem}.project-icon.blue{color:#2367cf;background:#e3eeff}.project-icon.cyan{color:#177c91;background:#def3f5}.project-icon.violet{color:#7b56bd;background:#eee8ff}.project-copy h3{font-size:1.02rem;margin:0}.project-copy p{font-size:.8rem;color:var(--muted);margin:2px 0 0}.project-state{text-align:right}.project-state span{font-size:.64rem;letter-spacing:.1em;color:#b17924;background:#fff3da;padding:4px 8px;border-radius:6px;font-weight:800}.project-state span.done{color:#23815c;background:#e1f4eb}.project-state small{display:block;color:#8c949e;font-size:.68rem;margin-top:6px}.project-arrow{color:#6a8bb4}
.about-section{padding-bottom:35px}.about-card{background:linear-gradient(135deg,#e3edfb,#edf3fb 55%,#e1e9f4);border:1px solid #d4dfed;border-radius:28px;padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:60px;position:relative;overflow:hidden}.about-card:after{content:"S";position:absolute;right:15px;bottom:-95px;font-size:18rem;line-height:1;font-weight:800;color:rgba(255,255,255,.38);pointer-events:none}.about-card h2{font-size:clamp(2rem,3.6vw,3.7rem);line-height:1.2;letter-spacing:-.05em;margin:13px 0 0}.about-copy{position:relative;z-index:1}.about-copy p{color:#536477;margin:5px 0 30px}.about-links{display:flex;flex-wrap:wrap;gap:10px}.about-links a{font-size:.78rem;font-weight:700;background:rgba(255,255,255,.7);border:1px solid rgba(176,194,217,.7);border-radius:9px;padding:8px 11px}footer{display:flex;justify-content:space-between;color:#838b95;font-size:.72rem;padding:30px 5px 0}.mobile-nav{display:none}
@media(max-width:1050px){.sidebar{width:220px}.sidebar-note{display:none}main{margin-left:220px}.hero{min-height:620px}.hero-orbit{right:-150px;opacity:.6}.article-grid{grid-template-columns:1fr}.featured{grid-row:auto}.about-card{grid-template-columns:1fr;gap:25px}.project-row{grid-template-columns:26px 50px 1fr 25px}.project-state{display:none}}
@media(max-width:740px){body{padding-bottom:72px}.sidebar{display:none}main{margin-left:0}.hero{padding:82px 24px 60px;min-height:610px}.hero h1{font-size:3.65rem}.hero-copy br{display:none}.hero-actions{align-items:stretch;flex-direction:column;width:100%}.button{width:100%}.hero-orbit{width:320px;height:320px;right:-145px;top:20px;opacity:.35}.orbit-core{right:85px;top:105px}.section{padding:64px 20px}.section-heading{align-items:center}.text-link{font-size:.74rem}.featured{grid-template-rows:175px 1fr}.article-body{padding:23px}.article-grid{gap:12px}.astro-feature{min-height:430px}.astro-info{padding:22px;display:block}.astro-info dl{margin-top:18px}.astro-strip{grid-template-columns:1fr 1fr}.astro-more{display:none}.project-row{padding:14px;grid-template-columns:20px 46px 1fr 20px;gap:10px}.project-icon{width:44px;height:44px}.project-copy p{display:none}.about-card{padding:34px 25px}.about-links{align-items:flex-start;flex-direction:column}footer{gap:10px;flex-wrap:wrap}.mobile-nav{position:fixed;z-index:20;left:10px;right:10px;bottom:10px;height:62px;padding:7px 6px;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(250,251,252,.92);border:1px solid #d9dee6;border-radius:18px;box-shadow:0 14px 35px rgba(25,38,58,.18);backdrop-filter:blur(16px)}.mobile-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-radius:12px;font-size:.58rem;color:#707986}.mobile-nav a span{font-size:1rem}.mobile-nav a.is-active{background:#e2edfc;color:#1d61c2}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* 少し整いすぎない、個人サイトらしい調整 */
.sidebar-note{display:none}.sidebar-foot{margin:auto 13px 0;color:#8b939e;font-size:.72rem;line-height:1.8}
.eyebrow,.kicker{text-transform:none;letter-spacing:.1em}.hero h1{max-width:940px;font-weight:680;line-height:1.03}.hero-actions{width:max-content}.button{border-radius:9px}.button-primary{box-shadow:none}.hero-orbit{display:none}.hero-note{position:absolute;right:8vw;bottom:80px;margin:0;padding-left:14px;border-left:2px solid #b7c6d9;color:#8c96a3;font-size:.72rem;line-height:1.8;transform:rotate(-2deg)}
.article-card{border-radius:14px;box-shadow:none;transition:transform .2s,border-color .2s}.article-card:hover{transform:translateY(-2px);border-color:#b8c9de;box-shadow:none}.article-visual{border-radius:8px}.tag{letter-spacing:.02em}.astro-info dl{display:none}.astro-info>p{margin:0;color:#a6b4c4;font-size:.76rem}.astro-more{background:#192637}.astro-more strong{font-size:1.25rem}.project-row{border-radius:11px}.project-icon{border-radius:10px}.about-card{background:#e7eef7;border-radius:18px}.about-card:after{display:none}
@media(max-width:1050px){.sidebar-foot{display:none}.hero-note{right:5vw}}
@media(max-width:740px){.hero h1{font-size:3.35rem}.hero-note{right:24px;bottom:25px}.astro-info>p{margin-top:14px}.mobile-nav a{font-size:.56rem}}

.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{min-height:190px;padding:25px;border:1px solid var(--line);border-radius:14px;background:#fff;display:grid;grid-template-columns:1fr auto;align-content:space-between;transition:.2s}.topic-card:hover{border-color:#a9bfdc;transform:translateY(-2px)}.topic-card>span{font-size:.72rem;color:#939ba6}.topic-card strong{grid-column:1/-1;font-size:1.45rem;letter-spacing:-.03em}.topic-card p{margin:8px 0 0;color:var(--muted);font-size:.88rem}.topic-card i{font-style:normal;align-self:end;color:#4775ad}.topic-astro{background:#111a27;color:#fff;border-color:#111a27}.topic-astro p,.topic-astro>span{color:#aab6c5}.topic-astro i{color:#8eb8eb}
.plain-list{padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 2fr;gap:25px}.plain-list p{margin:0;font-weight:700}.plain-list span{color:var(--muted)}.quote-placeholder{min-height:180px;padding:32px;border:1px dashed #b8c2ce;border-radius:12px;background:rgba(255,255,255,.45);display:flex;align-items:center;gap:28px}.quote-mark{font-family:Georgia,serif;font-size:5rem;line-height:1;color:#8ba6c8}.quote-placeholder strong{font-size:1rem}.quote-placeholder p{margin:5px 0 0;color:var(--muted);font-size:.88rem}
.social-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.timeline-card{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff}.timeline-card>header{min-height:70px;padding:15px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px}.timeline-card>header strong,.timeline-card>header span{display:block}.timeline-card>header strong{font-size:.9rem}.timeline-card>header span{font-size:.7rem;color:var(--muted)}.timeline-card>header a{font-size:.72rem;color:#2568d9;white-space:nowrap}.timeline-frame{min-height:640px;padding:0 12px;background:#fff}.timeline-frame>.twitter-timeline{display:block;padding:28px 10px;color:#68717e;font-size:.82rem}
.about-page{min-height:100vh}.simple-header{height:94px;padding:0 clamp(24px,6vw,80px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.simple-header .brand{padding:0}.simple-header>a:last-child{font-size:.82rem;color:#526c8d}.about-page main{margin-left:0}.intro-main{max-width:1000px;margin:0 auto;padding:100px 30px}.intro-main>h1{font-size:clamp(3rem,7vw,6.5rem);line-height:1.02;letter-spacing:-.06em;margin:18px 0 75px}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px 80px}.intro-grid section{border-top:2px solid #2f6fc7;padding-top:18px}.intro-grid h2{font-size:1.05rem;margin:0 0 18px}.intro-grid p,.intro-grid li{color:#596575}.intro-grid ul{padding-left:1.2em;margin:0}.intro-note{grid-column:1/-1;max-width:600px}
@media(max-width:740px){.topic-grid{grid-template-columns:1fr}.topic-card{min-height:150px}.plain-list{grid-template-columns:1fr;gap:6px}.simple-header{height:78px;padding:0 20px}.intro-main{padding:70px 22px}.intro-main>h1{margin-bottom:50px}.intro-grid{grid-template-columns:1fr;gap:42px}.intro-note{grid-column:auto}}
@media(max-width:900px){.social-grid{grid-template-columns:1fr}.timeline-frame{min-height:560px}}