:root { --accent:#5754df; --accent-hover:#4541c4; --accent-soft:#eeedff; --ink:#202332; --muted:#707582; --line:#e9eaf0; --surface:#f7f8fb; --danger:#c33c4b; --radius:24px; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:96px; }
body { margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",Arial,sans-serif; color:var(--ink); background:var(--surface); line-height:1.65; letter-spacing:-.025em; word-break:keep-all; -webkit-font-smoothing:antialiased; }
a { color:var(--accent); text-decoration:none; text-underline-offset:4px; }
a:hover { text-decoration:underline; }
button,input { font:inherit; }
button,a,input,summary { -webkit-tap-highlight-color:transparent; }
:focus-visible { outline:3px solid var(--accent); outline-offset:4px; }
[hidden] { display:none !important; }
h1,h2,h3,p { margin-top:0; }
h1,h2,h3 { font-weight:750; letter-spacing:-.055em; line-height:1.3; }
h1 { font-size:clamp(30px,4vw,40px); margin-bottom:16px; }
h2 { font-size:26px; margin-bottom:16px; }
h3 { font-size:20px; margin-bottom:12px; }
p { overflow-wrap:anywhere; }
.skip-link { position:fixed; top:-100px; left:16px; padding:12px 20px; background:white; z-index:20; border-radius:12px; }
.skip-link:focus { top:12px; }
.site-header { height:88px; background:rgba(255,255,255,.94); border-bottom:1px solid rgba(233,234,240,.7); }
.nav-shell { max-width:1160px; margin:auto; height:100%; padding:0 32px; display:flex; align-items:center; justify-content:space-between; }
.brand { display:inline-flex; align-items:center; gap:9px; font-size:23px; color:var(--ink); font-weight:800; letter-spacing:-1px; }
.brand:hover,.footer-brand:hover { text-decoration:none; }
.brand-symbol { display:inline-flex; width:34px; height:34px; border-radius:11px; background:var(--accent); color:white; align-items:center; justify-content:center; font-size:29px; line-height:1; padding-bottom:5px; font-weight:800; }
.brand-symbol span { color:#c1bfff; }
.nav-links { display:flex; align-items:center; gap:30px; font-size:14px; font-weight:650; }
.nav-links>a { color:#545967; }
.nav-links .nav-start { background:var(--accent-soft); color:var(--accent); padding:10px 16px; border-radius:12px; }
.nav-start span { margin-left:12px; }
.site-footer { max-width:1160px; margin:auto; padding:44px 32px 28px; color:var(--muted); font-size:12px; }
.site-footer>div { display:flex; justify-content:space-between; align-items:flex-start; gap:24px; }
.footer-brand { font-size:18px; color:#4b5060; font-weight:750; }
.footer-brand span { display:block; font-size:12px; font-weight:400; margin-top:6px; }
.footer-links { display:flex; gap:24px; padding-top:6px; }
.footer-links a { color:var(--muted); }
.site-footer>p { margin-top:30px; font-size:11px; color:#767b89; }
.flow-layout { max-width:1120px; margin:64px auto 80px; padding:0 32px; display:grid; grid-template-columns:1fr 1.15fr; align-items:start; gap:96px; }
.flow-intro { padding-top:48px; position:sticky; top:40px; }
.eyebrow { color:var(--accent); font-size:12px; font-weight:750; letter-spacing:.1em; margin-bottom:18px; }
.flow-intro h1 { font-size:clamp(32px,4vw,44px); line-height:1.4; }
.lead { color:var(--muted); font-size:16px; line-height:1.85; }
.step-list { list-style:none; padding:16px 0 0; margin:0; display:grid; gap:20px; font-size:14px; color:#777c89; }
.step-list li { display:flex; align-items:center; gap:12px; }
.step-list span { width:28px; height:28px; display:grid; place-items:center; background:#ececf3; border-radius:50%; font-size:12px; font-weight:700; }
.step-list .current { color:var(--ink); font-weight:650; }
.step-list .current span { background:var(--accent); color:white; }
.panel { background:white; border:1px solid var(--line); border-radius:var(--radius); padding:36px; box-shadow:0 10px 40px #23254b04; min-width:0; }
.panel h2 { font-size:23px; }
.panel-subtitle { color:var(--muted); font-size:14px; margin-bottom:28px; }
form { display:grid; gap:18px; }
.field-label { display:block; font-weight:650; font-size:14px; margin-bottom:9px; }
input[type=email] { width:100%; padding:16px; border:1px solid #d9dce5; border-radius:14px; background:#fcfcfe; color:var(--ink); transition:border-color .2s,box-shadow .2s; }
input[type=email]:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft); background:white; }
input::placeholder { color:#9195a3; }
input[type=checkbox] { accent-color:var(--accent); width:19px; height:19px; flex-shrink:0; margin:2px 0 0; cursor:pointer; }
.consent-item { display:flex; gap:10px; align-items:flex-start; margin:0; font-size:13px; color:#555b6b; line-height:1.7; cursor:pointer; }
.consent-stack { display:grid; gap:18px; border-top:1px solid var(--line); padding-top:22px; }
.consent-details { margin:0; padding:13px 16px; background:var(--surface); border-radius:12px; font-size:12px; color:var(--muted); line-height:1.8; }
.consent-details summary { cursor:pointer; color:#555b6b; font-weight:600; }
.consent-details p { margin:12px 0 0; }
button,.primary-link { display:inline-flex; align-items:center; justify-content:center; gap:12px; min-height:52px; border:0; border-radius:14px; padding:14px 22px; color:white; background:var(--accent); font-weight:650; font-size:15px; cursor:pointer; text-decoration:none; transition:background .2s,transform .2s,box-shadow .2s; }
button:hover,.primary-link:hover { background:var(--accent-hover); text-decoration:none; box-shadow:0 4px 12px #5754df1c; }
button:active,.primary-link:active { transform:translateY(1px); }
button:disabled { background:#ececf3; color:#8b8e9c; cursor:default; box-shadow:none; transform:none; }
button[aria-busy=true] { cursor:wait; }
button[aria-busy=true]::before { content:""; width:14px; height:14px; border:2px solid currentColor; border-right-color:transparent; border-radius:50%; animation:spin .8s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }
.secondary-button { background:var(--accent-soft); color:var(--accent); }
.secondary-button:hover { background:#e2e0ff; }
.text-button { background:transparent; color:var(--muted); font-size:13px; min-height:44px; }
.text-button:hover { background:var(--surface); box-shadow:none; }
.full-width { width:100%; }
.helper { color:var(--muted); font-size:12px; line-height:1.85; margin:14px 0 0; }
.status:empty,#status:empty,#me:empty { display:none; }
#status { background:var(--accent-soft); color:#4541a7; padding:16px; border-radius:14px; font-size:14px; margin:20px 0 0; line-height:1.75; }
#status[data-tone=error] { background:#fff0f1; color:#a72e40; }
#status[data-tone=success] { background:#eaf7f1; color:#236c51; }
#me { font-size:13px; color:var(--muted); overflow-wrap:anywhere; }
#subscription-link { margin:20px 0 0; }
#logout { margin-top:12px; }
.icon-tile { display:grid; place-items:center; width:64px; height:64px; border-radius:21px; background:var(--accent-soft); color:var(--accent); font-size:28px; margin-bottom:28px; }
.center-layout { max-width:584px; margin:64px auto 88px; padding:0 24px; }
.center-layout .panel { padding:40px; }
.center-layout h1 { font-size:30px; }
.info-box { background:var(--surface); border-radius:16px; padding:20px; font-size:13px; color:#626877; line-height:1.85; margin:24px 0; }
.info-box p:last-child { margin-bottom:0; }
.info-box strong { color:var(--ink); }
.back-link { display:inline-flex; min-height:44px; align-items:center; font-size:14px; margin-top:16px; }
.danger-tile { background:#fff0f1; color:var(--danger); }
#delete { margin-top:22px; }
.danger-button { background:var(--danger); }
.danger-button:hover { background:#ac2e3c; }
.legal-layout { max-width:840px; margin:56px auto 80px; padding:0 24px; }
.legal-layout .panel { padding:48px; }
.legal-layout h2 { font-size:21px; margin-top:36px; }
.legal-layout p,.legal-layout li { font-size:14px; color:#5e6472; line-height:1.95; }
.legal-layout li { padding-left:4px; margin-bottom:12px; }
.legal-layout ul { padding-left:20px; }
.legal-layout h1 { font-size:34px; }
/* The landing page shares the same typography, spacing, and interactive states. */
.home-page { background:white; }
.home-shell { max-width:1160px; padding:0 32px; margin:auto; }
.hero { display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center; min-height:660px; padding-top:76px; padding-bottom:90px; }
.hero-label { display:inline-flex; align-items:center; gap:8px; color:var(--accent); background:var(--accent-soft); border-radius:40px; padding:7px 13px; font-size:12px; font-weight:650; margin-bottom:24px; }
.hero-label::before { content:""; width:6px; height:6px; border-radius:50%; background:var(--accent); }
.hero h1 { font-size:clamp(40px,4.6vw,58px); line-height:1.28; margin-bottom:24px; letter-spacing:-.065em; }
.hero h1 em { color:var(--accent); font-style:normal; }
.hero .lead { max-width:380px; margin-bottom:30px; }
.hero .primary-link { min-height:58px; padding:16px 26px; }
.hero-note { margin-top:16px; font-size:12px; color:var(--muted); }
.hero-art { position:relative; padding:36px 15px 38px 28px; }
.art-backdrop { position:absolute; inset:0 -12px 0 0; border-radius:48px; background:linear-gradient(145deg,#f3f1ff,#f6f8ff 65%,#eef4fa); transform:rotate(-3deg); }
.mail-preview { position:relative; background:white; border-radius:22px; border:1px solid #e6e4f4; box-shadow:0 22px 55px #35305e12; transform:rotate(2deg); overflow:hidden; }
.mail-toolbar { display:flex; justify-content:space-between; align-items:center; padding:18px 24px; border-bottom:1px solid #eeedf5; font-size:11px; color:#858999; }
.mail-toolbar span:first-child { color:var(--accent); font-weight:750; letter-spacing:.12em; }
.mail-body { padding:28px; }
.mail-meta { display:flex; align-items:center; gap:9px; font-size:11px; color:var(--muted); margin-bottom:24px; }
.mail-avatar { width:30px; height:30px; display:grid; place-items:center; background:var(--accent-soft); color:var(--accent); border-radius:10px; font-weight:750; font-size:16px; }
.mail-category { display:inline-block; font-size:10px; color:var(--accent); background:var(--accent-soft); border-radius:6px; padding:4px 8px; margin-bottom:13px; }
.mail-body h2 { font-size:25px; line-height:1.45; }
.mail-body>p { font-size:12px; line-height:1.9; color:#737889; }
.answer-preview { background:#f7f8fb; border-radius:12px; padding:17px; margin:20px 0; }
.answer-preview strong { font-size:11px; color:#575b70; }
.answer-preview p { font-size:12px; color:#737889; margin:8px 0 0; }
.mail-bottom { display:flex; justify-content:space-between; font-size:11px; color:var(--accent); padding-top:16px; border-top:1px solid var(--line); }
.delivery-chip { position:absolute; right:-14px; bottom:12px; background:white; border:1px solid #eeedf5; box-shadow:0 8px 28px #34305d12; border-radius:16px; padding:15px 20px; display:flex; gap:12px; align-items:center; font-size:12px; }
.delivery-chip>span { background:#eaf7f1; color:#26956a; width:34px; height:34px; display:grid; place-items:center; border-radius:12px; font-size:18px; }
.delivery-chip strong { display:block; font-size:13px; }
.delivery-chip small { color:var(--muted); font-size:11px; }
.rhythm-strip { border-top:1px solid var(--line); border-bottom:1px solid var(--line); display:grid; grid-template-columns:repeat(3,1fr); padding:28px 0; margin-bottom:0; }
.rhythm-strip>div { display:flex; justify-content:center; align-items:center; gap:14px; border-right:1px solid var(--line); }
.rhythm-strip>div:last-child { border:0; }
.rhythm-strip strong { font-size:20px; }
.rhythm-strip span { font-size:12px; color:var(--muted); }
.section { padding-top:100px; padding-bottom:100px; }
.section-heading { margin-bottom:40px; }
.section-heading h2 { font-size:clamp(30px,4vw,38px); line-height:1.4; }
.section-heading>p:last-child { color:var(--muted); font-size:15px; }
.feature-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.feature-card { background:var(--surface); border-radius:24px; padding:30px; }
.feature-card .icon-tile { width:48px; height:48px; font-size:21px; border-radius:16px; margin-bottom:24px; }
.feature-card h3 { font-size:20px; }
.feature-card p { font-size:14px; color:var(--muted); margin-bottom:0; line-height:1.9; }
.feature-card:nth-child(2) .icon-tile { color:#28856a; background:#e6f4ec; }
.feature-card:nth-child(3) .icon-tile { color:#b77a27; background:#fff1d8; }
.topics-section { background:#f8f9fc; }
.topics-layout { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; }
.topic-list { display:grid; gap:12px; }
.topic-row { display:flex; align-items:center; gap:16px; padding:19px 22px; background:white; border-radius:16px; border:1px solid #eeeef4; }
.topic-row>span:first-child { color:#aba8d1; font-size:12px; font-weight:700; }
.topic-row strong { font-size:15px; }
.topic-row small { margin-left:auto; color:var(--muted); font-size:12px; }
.faq-layout { display:grid; grid-template-columns:.85fr 1.15fr; gap:80px; }
.faq-list details { border-bottom:1px solid var(--line); padding:20px 0; }
.faq-list details:first-child { padding-top:0; }
.faq-list summary { cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:20px; font-weight:650; font-size:15px; min-height:30px; }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary::after { content:"+"; color:#9295a6; font-size:23px; font-weight:400; }
.faq-list details[open] summary::after { content:"−"; }
.faq-list p { color:var(--muted); font-size:14px; margin:14px 24px 0 0; line-height:1.9; }
.cta-section { text-align:center; background:#f1f0ff; border-radius:32px; padding:64px 24px; margin-bottom:40px; }
.cta-section h2 { font-size:34px; line-height:1.4; }
.cta-section p { color:#75718e; font-size:15px; margin-bottom:26px; }
.home-page .site-footer { border-top:1px solid var(--line); }
@media (max-width:900px) {
 .flow-layout { gap:40px; grid-template-columns:.85fr 1.15fr; }
 .hero { gap:16px; } .hero-art { padding-left:12px; }
 .mail-body { padding:22px; } .mail-body h2 { font-size:22px; }
 .delivery-chip { right:-4px; }
 .topics-layout,.faq-layout { gap:40px; }
 .feature-card { padding:24px; }
}
@media (max-width:680px) {
 .site-header { height:72px; } .nav-shell { padding:0 22px; } .brand { font-size:21px; }
 .nav-links { gap:18px; font-size:13px; } .nav-start span { display:none; }
 .nav-links .nav-start { padding:8px 12px; }
 .flow-layout { display:block; margin:36px auto 48px; padding:0 22px; }
 .flow-intro { position:static; padding:0 2px 28px; } .flow-intro h1 { font-size:32px; }
 .flow-intro .lead { font-size:14px; } .step-list { display:flex; gap:18px; flex-wrap:wrap; font-size:12px; padding-top:0; }
 .step-list li { gap:6px; } .step-list span { width:22px; height:22px; font-size:10px; }
 .panel { padding:26px 22px; border-radius:22px; } .panel h2 { font-size:22px; }
 .site-footer { padding:32px 24px 20px; } .site-footer>div { flex-direction:column; gap:20px; }
 .footer-links { gap:20px; font-size:11px; } .site-footer>p { margin-top:24px; }
 .center-layout { margin:36px auto 48px; padding:0 22px; } .center-layout .panel { padding:28px 24px; }
 .center-layout h1 { font-size:28px; }
 .legal-layout { margin:32px auto; padding:0 18px; } .legal-layout .panel { padding:28px 22px; }
 .legal-layout h1 { font-size:28px; }
 .home-shell { padding-left:24px; padding-right:24px; }
 .hero { display:block; padding-top:44px; padding-bottom:48px; min-height:auto; }
 .hero h1 { font-size:42px; } .hero .lead { font-size:15px; max-width:330px; }
 .hero-art { max-width:420px; margin:48px auto 0; padding:20px 12px 36px; }
 .art-backdrop { inset:0; border-radius:32px; }
 .mail-body { padding:24px; } .mail-body h2 { font-size:24px; }
 .delivery-chip { bottom:0; right:-4px; }
 .rhythm-strip { padding:22px 0; }
 .rhythm-strip>div { flex-direction:column; gap:3px; } .rhythm-strip strong { font-size:17px; } .rhythm-strip span { font-size:10px; }
 .section { padding-top:64px; padding-bottom:64px; }
 .section-heading { margin-bottom:28px; } .section-heading h2 { font-size:30px; }
 .feature-grid { grid-template-columns:1fr; gap:14px; }
 .feature-card { padding:28px; } .feature-card .icon-tile { margin-bottom:18px; }
 .topics-layout,.faq-layout { grid-template-columns:1fr; gap:20px; }
 .topic-row { padding:17px; } .topic-row small { font-size:11px; }
 .cta-section { border-radius:24px; padding:44px 20px; margin:0 18px 32px; }
 .cta-section h2 { font-size:28px; }
}
@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } *,*::before,*::after { animation:none !important; transition:none !important; } }