/* Chairpost: one stylesheet for the front page, the account pages and the app. */
:root{
  --accent:#1E6E8C;--accent-dark:#165670;--accent-soft:#E8F2F6;--ink:#14303B;--muted:#56707B;--line:#DCE7EC;
  --bg:#FFFFFF;--bg-soft:#F5F9FA;--warn:#8A4B0F;--warn-bg:#FFF5E6;--ok:#1F6B45;--ok-bg:#E8F5EE;--bad:#9B2C2C;--bad-bg:#FDECEC;
  --radius:14px;--shadow:0 1px 2px rgba(20,48,59,.06),0 8px 24px rgba(20,48,59,.07);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans JP",sans-serif}
img{max-width:100%;display:block}
a{color:var(--accent)}
a:hover{color:var(--accent-dark)}
:focus-visible{outline:3px solid #8CC3D8;outline-offset:2px;border-radius:6px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:720px}
h1,h2,h3{line-height:1.25;letter-spacing:-.01em;margin:0}
h2{font-size:clamp(1.5rem,4vw,2rem)}
h3{font-size:1.1rem}
p{margin:0}
.muted{color:var(--muted)}
.small{font-size:.875rem}
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:#fff;font:inherit;font-weight:650;text-decoration:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--accent-dark);color:#fff}
.btn[disabled]{opacity:.6;cursor:wait}
.btn-ghost{background:#fff;color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft);color:var(--accent-dark)}
.btn-small{min-height:40px;padding:8px 16px;font-size:.9rem}
.btn-danger{background:#fff;border-color:var(--bad);color:var(--bad)}
.btn-danger:hover{background:var(--bad-bg);color:var(--bad)}
.linkbtn{background:none;border:0;padding:8px 0;min-height:40px;font:inherit;color:var(--accent);text-decoration:underline;cursor:pointer}

/* top bar */
.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:750;font-size:1.1rem}
.brand img{width:32px;height:32px;border-radius:8px}
.top-links{display:none;gap:22px;margin-left:12px}
.top-links a{color:var(--muted);text-decoration:none;font-size:.95rem;padding:10px 0}
.top-links a:hover{color:var(--ink)}
.top-end{margin-left:auto;display:flex;align-items:center;gap:8px}
.top-end .login{color:var(--ink);text-decoration:none;padding:10px 10px;font-size:.95rem}
@media (min-width:820px){.top-links{display:flex}}

/* hero */
.hero{padding:56px 0 48px;background:linear-gradient(180deg,var(--bg-soft),#fff 70%)}
.hero-grid{display:grid;gap:40px;align-items:center}
@media (min-width:960px){.hero-grid{grid-template-columns:1fr 1.05fr;gap:56px;align-items:start}.hero-grid>div:first-child{position:sticky;top:120px;padding-top:24px}.hero{padding:72px 0 72px}}
h1,h2,h3,.post-topic{text-wrap:balance}
p,li{text-wrap:pretty}
.brand{min-height:44px}
.hero h1{font-size:clamp(2.1rem,6vw,3.2rem);line-height:1.12;letter-spacing:-.02em}
.hero .sub{margin-top:18px;font-size:1.125rem;color:var(--muted);max-width:34em}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px}
.nocard{font-size:.9rem;color:var(--muted)}

/* the product screen */
.screen{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.screen-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--bg-soft);font-size:.8rem;color:var(--muted)}
.screen-bar i{width:9px;height:9px;border-radius:50%;background:#D4E0E5;display:inline-block}
.screen-bar span{margin-left:8px}
.screen-body{padding:16px;display:grid;gap:12px}
.sample-tag{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--warn);background:var(--warn-bg);border-radius:999px;padding:2px 10px}
.clinic-line{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px}
.clinic-line strong{font-size:1.05rem}
.chips{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.chips li{font-size:.78rem;background:var(--accent-soft);color:var(--accent-dark);border-radius:999px;padding:3px 10px}

/* a post */
.post{border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;background:#fff;display:grid;gap:8px}
.post-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.post-topic{font-weight:700;font-size:.95rem}
.post-num{font-size:.75rem;color:var(--muted)}
.post-caption{white-space:pre-wrap;font-size:.95rem}
.post-meta{font-size:.85rem;color:var(--muted);display:grid;gap:2px}
.post-meta b{color:var(--ink);font-weight:600}
.post-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.fake-btn{font-size:.8rem;font-weight:650;border:1px solid var(--line);border-radius:999px;padding:4px 12px;color:var(--accent)}
.fake-btn.solid{background:var(--accent);border-color:var(--accent);color:#fff}
.screen .post{border:0;border-top:1px solid var(--line);border-radius:0;padding:14px 2px 4px}
.screen .post-caption{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}

/* sections */
section{padding:64px 0}
@media (min-width:960px){section{padding:88px 0}}
.section-head{max-width:640px;margin-bottom:36px;display:grid;gap:10px}
.alt{background:var(--bg-soft)}
.steps{display:grid;gap:16px;list-style:none;padding:0;margin:0;counter-reset:s}
@media (min-width:820px){.steps{grid-template-columns:repeat(3,1fr);gap:24px}}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.steps li::before{content:counter(s);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;margin-bottom:12px}
.features{display:grid;gap:16px}
@media (min-width:820px){.features{grid-template-columns:repeat(2,1fr);gap:24px}}
.feature{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;display:grid;gap:8px;align-content:start}
.feature svg{width:36px;height:36px;color:var(--accent)}
.nolist{display:grid;gap:10px;list-style:none;padding:0;margin:0}
@media (min-width:820px){.nolist{grid-template-columns:repeat(2,1fr);gap:12px 32px}}
.nolist li{display:flex;gap:10px;align-items:flex-start}
.nolist li::before{content:"";flex:0 0 18px;height:18px;margin-top:4px;border-radius:50%;background:var(--bad-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M6 6l6 6M12 6l-6 6' stroke='%239B2C2C' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E") center/18px no-repeat}
.note{background:var(--accent-soft);padding:16px 18px;border-radius:12px}
.source{font-size:.85rem;color:var(--muted);margin-top:18px}

/* demo */
.demo{display:grid;gap:20px}
.demo-form{display:flex;flex-wrap:wrap;gap:10px}
.demo-form input{flex:1 1 260px}
.demo-out{display:grid;gap:12px}

/* price */
.plan{max-width:480px;border:2px solid var(--accent);border-radius:20px;padding:28px;background:#fff;display:grid;gap:16px;box-shadow:var(--shadow)}
.plan-price{font-size:2.6rem;font-weight:800;letter-spacing:-.02em;line-height:1}
.plan-price small{font-size:1rem;font-weight:500;color:var(--muted)}
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.ticks li{padding-left:28px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:var(--ok-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5 9.5l2.5 2.5L13 6.5' fill='none' stroke='%231F6B45' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/18px no-repeat}
.price-grid{display:grid;gap:28px}
@media (min-width:900px){.price-grid{grid-template-columns:1fr 1fr;align-items:start}}

/* faq */
.faq{display:grid;gap:10px}
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:650;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 18px 16px;color:var(--muted)}

.band{background:var(--accent);color:#fff;text-align:center}
.band h2{color:#fff}
.band p{color:#DCEEF5;margin-top:10px}
.band .btn{background:#fff;color:var(--accent);border-color:#fff;margin-top:24px}
.band .btn:hover{background:var(--accent-soft)}

/* footer */
.foot{border-top:1px solid var(--line);padding:28px 0;font-size:.9rem;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between}
.foot a{color:var(--muted)}
.syng-legal-links a{display:inline-block;padding:8px 2px}

/* forms */
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.auth{min-height:calc(100vh - 160px);display:grid;place-items:start center;padding:48px 20px;background:var(--bg-soft)}
.auth .card{width:100%;max-width:420px;display:grid;gap:18px}
.auth h1{font-size:1.6rem}
form.stack{display:grid;gap:14px}
label{display:grid;gap:6px;font-size:.95rem;font-weight:550}
label.check{display:flex;gap:10px;align-items:flex-start;font-weight:400}
label.check{align-items:center}
label.check input{appearance:none;-webkit-appearance:none;flex:0 0 44px;width:44px;height:44px;margin:-10px -8px -10px -12px;border:0;border-radius:10px;cursor:pointer;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 22'%3E%3Crect x='1' y='1' width='20' height='20' rx='5' fill='white' stroke='%2393ADB8' stroke-width='1.5'/%3E%3C/svg%3E") center/22px no-repeat}
label.check input:checked{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 22'%3E%3Crect x='1' y='1' width='20' height='20' rx='5' fill='%231E6E8C' stroke='%231E6E8C' stroke-width='1.5'/%3E%3Cpath d='M6 11.5l3.2 3.2L16 8' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}
input[type=text],input[type=email],input[type=password],input[type=url],textarea{font:inherit;width:100%;padding:12px 14px;border:1px solid #C5D5DC;border-radius:10px;background:#fff;color:var(--ink);min-height:48px}
textarea{min-height:96px;resize:vertical}
input:focus,textarea:focus{border-color:var(--accent);outline:3px solid #CFE6EF;outline-offset:0}
.hint{font-size:.85rem;color:var(--muted);font-weight:400}
.msg{border-radius:10px;padding:10px 14px;font-size:.95rem}
.msg:empty{display:none}
.msg.err{background:var(--bad-bg);color:var(--bad)}
.msg.ok{background:var(--ok-bg);color:var(--ok)}
.msg.info{background:var(--accent-soft);color:var(--accent-dark)}
.msg.warn{background:var(--warn-bg);color:var(--warn)}

/* app */
.app{padding:32px 0 64px;background:var(--bg-soft);min-height:calc(100vh - 140px)}
.app .wrap{display:grid;gap:20px;max-width:860px}
.app h1{font-size:1.6rem}
.posts{display:grid;gap:14px}
.app .post{padding:18px 20px}
.app .post-caption{font-size:1rem}
.change{display:grid;gap:8px;margin-top:6px}
.change[hidden]{display:none}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.spin{display:inline-block;width:18px;height:18px;border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;vertical-align:-3px}
@keyframes spin{to{transform:rotate(360deg)}}
.progress{display:grid;gap:8px;list-style:none;padding:0;margin:0}
.progress li{color:var(--muted)}
.progress li.now{color:var(--ink);font-weight:600}
.progress li.done{color:var(--ok)}
.older summary{cursor:pointer;font-weight:600;padding:8px 0}
.kv{display:grid;gap:4px}
.kv dt{font-size:.85rem;color:var(--muted)}
.kv dd{margin:0 0 10px;font-weight:600;overflow-wrap:anywhere}
.app .wrap>*{min-width:0}
.picks{display:flex;flex-wrap:wrap;gap:8px}
.pick{font:inherit;font-size:.9rem;min-height:44px;padding:8px 14px;border-radius:999px;border:1px solid #C5D5DC;background:#fff;color:var(--ink);cursor:pointer}
.pick[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}
[hidden]{display:none!important}