:root {
  --accent: #B5481F;
  --accent-dark: #8f3816;
  --accent-soft: #f6e7df;
  --ink: #1d1a17;
  --muted: #625a52;
  --line: #dfe2e5;
  --paper: #f3f4f5;
  --card: #ffffff;
  --ok: #2f6b3a;
  --radius: 12px;
  font-family: "Helvetica Neue", Arial, "Noto Sans", "Noto Sans JP", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
h1, h2, h3 { text-wrap: balance; }
p, li { text-wrap: pretty; }
body { margin: 0; }
img { max-width: 100%; }
a { color: var(--accent-dark); }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 6vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 4vw, 2.1rem); font-weight: 750; }
h3 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.eyebrow { font-size: .95rem; font-weight: 700; color: var(--accent); margin-bottom: .6em; }

/* nav */
.top { background: rgba(250, 247, 243, .95); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.top .wrap { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: var(--ink); text-decoration: none; margin-right: auto; min-height: 44px; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.links { display: none; gap: 22px; }
.links a, .login { color: var(--ink); text-decoration: none; font-weight: 500; padding: 10px 2px; }
.links a:hover, .login:hover { color: var(--accent-dark); }
@media (min-width: 820px) { .links { display: flex; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; border-radius: 10px; border: 1.5px solid var(--accent); background: var(--accent); color: #fff; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; }
.btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn.ghost { background: transparent; color: var(--accent-dark); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.small { min-height: 44px; padding: 8px 14px; font-size: .92rem; }
.btn.quiet { border-color: var(--line); background: var(--card); color: var(--ink); }
.btn.quiet:hover { border-color: var(--ink); }
.btn.danger { background: #fff; color: #9b1c1c; border-color: #9b1c1c; }
.top .btn { min-height: 44px; padding: 8px 16px; }

/* hero */
.hero { padding: 56px 0 72px; }
.hero .wrap { display: grid; gap: 48px; }
.hero .sub { font-size: 1.12rem; color: var(--muted); max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 28px; }
.cta .note { color: var(--muted); font-size: .95rem; }
@media (min-width: 980px) { .hero .wrap { grid-template-columns: 1fr 1.05fr; align-items: center; } .hero { padding: 88px 0 104px; } }

/* the product, as it runs */
.screen { background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 18px 40px -24px rgba(60, 30, 10, .35); overflow: hidden; }
.screen-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: .9rem; }
.tag { display: inline-block; font-size: .8rem; font-weight: 700; background: var(--accent-soft); color: var(--accent-dark); padding: 3px 8px; border-radius: 999px; }
.daystrip { display: grid; grid-template-columns: repeat(5, 1fr); border-bottom: 1px solid var(--line); }
.daystrip div { padding: 10px 6px; text-align: center; font-size: .8rem; border-right: 1px solid var(--line); }
.daystrip div:last-child { border-right: 0; }
.daystrip b { display: block; font-size: .85rem; }
.daystrip .on { background: var(--accent-soft); }
.daystrip .ok { color: var(--ok); font-weight: 600; }
.pv { padding: 16px 18px 18px; }
.pv-title { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.pv-title h3 { margin: 0; }
.minbar { display: flex; height: 8px; border-radius: 99px; overflow: hidden; margin: 6px 0 14px; gap: 2px; }
.minbar span { background: var(--accent); opacity: .35; }
.minbar span:nth-child(2) { opacity: 1; }
.minbar span:nth-child(3) { opacity: .7; }
.minbar span:nth-child(4) { opacity: .2; }

/* a class's blocks (the preview and the app) */
.blocks { list-style: none; margin: 0; padding: 0; }
.block { display: grid; grid-template-columns: 4.2rem 1fr; gap: 4px 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.block:first-child { border-top: 0; }
.block .min { font-weight: 800; color: var(--accent-dark); font-variant-numeric: tabular-nums; }
.block .name { font-weight: 700; }
.block p { margin: 2px 0 0; font-size: .95rem; }
.opts { display: grid; gap: 4px; margin-top: 6px; font-size: .9rem; }
.opts span b { font-weight: 600; color: var(--muted); }
.cnote { font-size: .88rem; color: var(--muted); font-style: italic; margin-top: 6px !important; }

/* sections */
section { padding: 56px 0; }
@media (min-width: 820px) { section { padding: 104px 0; } }
.alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 40em; }
.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; gap: 28px; counter-reset: s; }
.steps li { counter-increment: s; padding-top: 18px; border-top: 2px solid var(--ink); }
.steps li::before { content: counter(s, decimal-leading-zero); display: block; font-weight: 800; color: var(--accent); margin-bottom: 8px; }
@media (min-width: 820px) { .steps { grid-template-columns: repeat(3, 1fr); gap: 40px; } }
.voices { margin-top: 48px; display: grid; gap: 16px; }
.voices p { margin: 0; font-size: .95rem; color: var(--muted); }
.voices b { color: var(--ink); }
.features { display: grid; gap: 20px; margin-top: 40px; }
.feature { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.feature p { margin: 0; color: var(--muted); }
@media (min-width: 820px) { .features { grid-template-columns: 1fr 1fr; gap: 24px; } }
.coach { margin-top: 32px; padding: 22px 26px; border-left: 3px solid var(--accent); background: var(--paper); }
.coach p { margin: 0; }
.plan { max-width: 520px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 32px; margin-top: 32px; }
.amount { font-size: 3rem; font-weight: 800; line-height: 1; }
.amount small { font-size: 1rem; font-weight: 500; color: var(--muted); }
.ticks { list-style: none; padding: 0; margin: 22px 0 26px; display: grid; gap: 10px; }
.ticks li { padding-left: 28px; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 4px; top: .55em; width: 12px; height: 7px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.faq details { border-top: 1px solid var(--line); padding: 4px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 650; padding: 16px 0; min-height: 44px; list-style-position: outside; }
.faq details p { color: var(--muted); padding-bottom: 8px; }
.band { background: var(--ink); color: #fff; text-align: center; }
.band h2 { color: #fff; }
.band p { color: #d9d2ca; }
.band .btn { margin-top: 12px; }

/* footer */
footer { padding: 40px 0 56px; font-size: .92rem; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
footer a { color: var(--muted); }
.syng-legal-links a { display: inline-block; padding: 10px 2px; }

/* forms */
.auth { padding: 56px 0 80px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.auth .card { max-width: 440px; margin: 0 auto; }
label { display: block; font-weight: 600; margin: 16px 0 6px; }
input[type=email], input[type=password], input[type=text], select, textarea { width: 100%; min-height: 48px; padding: 10px 14px; border: 1.5px solid var(--line); border-radius: 10px; font: inherit; background: #fff; color: var(--ink); }
textarea { min-height: 84px; resize: vertical; }
input:focus, select:focus, textarea:focus, .btn:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid rgba(181, 72, 31, .35); outline-offset: 2px; border-color: var(--accent); }
.form-actions { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.msg { margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: var(--accent-soft); color: var(--accent-dark); font-size: .95rem; }
.msg.good { background: #e7f2e8; color: var(--ok); }
.msg[hidden] { display: none; }
.linkbtn { background: none; border: 0; padding: 10px 0; font: inherit; color: var(--accent-dark); text-decoration: underline; cursor: pointer; min-height: 44px; }

/* the app */
.app { padding: 36px 0 80px; min-height: 100vh; }
.app-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.app-head h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border: 1.5px solid var(--line); border-radius: 999px; background: #fff; cursor: pointer; font-weight: 500; }
.chip input:checked + span { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip input:focus-visible + span { outline: 3px solid rgba(181, 72, 31, .35); outline-offset: 2px; }
fieldset { border: 0; padding: 0; margin: 0 0 22px; }
legend { font-weight: 700; margin-bottom: 10px; padding: 0; }
.setup { max-width: 760px; }
.banner { padding: 14px 18px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; justify-content: space-between; }
.weeks { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.weeks button { min-height: 44px; padding: 8px 14px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; font: inherit; cursor: pointer; }
.weeks button[aria-pressed=true] { border-color: var(--ink); font-weight: 700; }
.classes { display: grid; gap: 20px; }
@media (min-width: 900px) { .classes { grid-template-columns: 1fr 1fr; } }
.klass { scroll-margin-top: 84px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.klass-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.klass-head h2 { font-size: 1.25rem; margin: 2px 0 0; }
.day { font-size: .95rem; font-weight: 700; color: var(--accent); }
.total { font-weight: 700; white-space: nowrap; }
.changed { font-size: .88rem; color: var(--muted); margin: 6px 0 0; }
.klass-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.change-form { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); }
.change-form label { margin-top: 0; }
.working { display: flex; align-items: center; gap: 12px; padding: 22px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; }
.spin { width: 20px; height: 20px; border-radius: 50%; border: 3px solid var(--accent-soft); border-top-color: var(--accent); animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; } html { scroll-behavior: auto; } }
.rows { display: grid; gap: 0; }
.row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding: 18px 0; border-top: 1px solid var(--line); align-items: center; }
.row:first-child { border-top: 0; }
.print-head { display: none; }

@media print {
  .top, footer, .no-print, .klass-actions, .weeks, .banner, .change-form { display: none !important; }
  body, .klass { background: #fff; }
  .print-head { display: block; }
  .classes { grid-template-columns: 1fr; gap: 0; }
  .klass { border: 0; border-bottom: 1px solid #999; border-radius: 0; break-inside: avoid; padding: 12px 0; }
  .app { padding: 0; }
}