@import url("https://fonts.googleapis.com/css2?family=Inter:wght@500;600;700&family=Noto+Sans+KR:wght@400;500;600;700&display=swap");

:root {
  --ink: #172033;
  --ink-deep: #0f172a;
  --muted: #52617a;
  --muted-light: #7b879b;
  --focus: #075ab8;
  --primary: #2563eb;
  --sky: #38bdf8;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --border: #dce5f0;
  --soft-blue: #eaf2ff;
  --blue-soft: #eaf2ff;
  --soft-sky: #e9f8fe;
  --positive: #176b47;
  --positive-bg: #eaf7f1;
  --warning: #8a4a00;
  --warning-bg: #fff3e3;
  --radius: 20px;
  --shadow: 0 18px 50px rgba(23, 32, 51, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Noto Sans KR", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
.shell { width: min(calc(100% - 36px), 1180px); margin-inline: auto; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.hero-section {
  position: relative;
  overflow: hidden;
  padding: 48px 0 72px;
  background:
    radial-gradient(circle at 88% 12%, rgba(56, 189, 248, 0.18), transparent 25%),
    radial-gradient(circle at 10% 0%, rgba(37, 99, 235, 0.09), transparent 26%),
    var(--bg);
}
.hero-glow { position: absolute; inset: auto -120px -160px auto; width: 360px; height: 360px; border-radius: 50%; background: rgba(37, 99, 235, 0.08); filter: blur(70px); }
.hero-layout { position: relative; display: grid; gap: 50px; }
.product-brand-lockup { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 20px; color: var(--ink); font-weight: 700; }
.product-brand-lockup img { width: 54px; height: 54px; display: block; object-fit: contain; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--focus); font-family: Inter, sans-serif; font-size: 0.73rem; font-weight: 700; letter-spacing: 0.14em; }
.eyebrow > span { width: 18px; height: 2px; background: var(--primary); }
.eyebrow-light { color: #b9d1ff; }
.eyebrow-light > span { background: var(--sky); }
.hero-copy h1, .section-heading h2, .release-copy h2, .feedback-card h2 { margin: 0; letter-spacing: -0.065em; line-height: 1.04; }
.hero-copy h1 { max-width: 9ch; font-size: clamp(3.15rem, 15vw, 5.7rem); font-weight: 600; }
.hero-copy > p:not(.eyebrow) { max-width: 28rem; margin: 22px 0 0; color: var(--muted); font-size: 1rem; line-height: 1.75; }
.hero-copy .hero-note { margin-top: 13px; color: var(--muted-light); font-size: .76rem; line-height: 1.55; }
.hero-actions { display: grid; gap: 10px; margin-top: 30px; }
.primary-button, .secondary-button {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 19px;
  border-radius: 16px;
  font-size: 0.93rem;
  font-weight: 600;
}
.primary-button { color: #fff; background: var(--primary); box-shadow: 0 12px 26px rgba(37, 99, 235, 0.2); }
.secondary-button { background: var(--surface); border: 1px solid var(--border); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 18px; color: var(--muted); font-family: Inter, sans-serif; font-size: 0.72rem; }
.hero-meta span { position: relative; }
.hero-meta span + span::before { position: absolute; left: -9px; content: "·"; }

.preview-stage { width: 100%; max-width: 430px; justify-self: center; }
.screen-tabs {
  width: max-content;
  display: flex;
  gap: 4px;
  margin: 0 auto 14px;
  padding: 4px;
  background: rgba(255,255,255,.88);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 8px 22px rgba(23,32,51,.06);
}
.screen-tabs button { min-height: 38px; padding: 0 15px; color: var(--muted); background: transparent; border: 0; border-radius: 999px; font-size: .78rem; font-weight: 600; cursor: pointer; }
.screen-tabs button[aria-selected="true"] { color: var(--focus); background: var(--soft-blue); }
.phone-frame {
  position: relative;
  width: min(100%, 390px);
  height: 720px;
  display: grid;
  grid-template-rows: 28px minmax(0, 1fr) 68px;
  margin-inline: auto;
  overflow: hidden;
  background: var(--bg);
  border: 9px solid #111827;
  border-radius: 40px;
  box-shadow: 0 35px 80px rgba(23,32,51,.2);
}
.phone-speaker { position: absolute; z-index: 3; top: 9px; left: 50%; width: 68px; height: 5px; background: #30394a; border-radius: 999px; transform: translateX(-50%); }
.phone-status { display: flex; align-items: end; justify-content: space-between; padding: 0 18px 3px; background: var(--surface); font-family: Inter, sans-serif; font-size: .61rem; font-weight: 600; }
.app-screen { min-height: 0; overflow: hidden; background: var(--bg); }
.app-screen.is-active { display: grid; grid-template-rows: auto minmax(0,1fr); }
.app-bar { min-height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 12px 15px 10px 18px; background: var(--surface); border-bottom: 1px solid var(--border); }
.app-bar h2 { margin: 0; font-size: 1.2rem; font-weight: 600; letter-spacing: -.04em; }
.app-bar p { margin: 3px 0 0; color: var(--muted); font-size: .68rem; }
.round-action, .icon-action { width: 42px; height: 42px; display: grid; place-items: center; padding: 0; border-radius: 50%; cursor: pointer; }
.round-action { color: #fff; background: var(--primary); border: 0; font-size: 1.45rem; font-weight: 400; }
.icon-action { color: var(--muted); background: var(--surface); border: 1px solid var(--border); font-weight: 600; }
.app-content { min-height: 0; overflow-y: auto; padding: 14px 14px 22px; scrollbar-width: none; }
.app-content::-webkit-scrollbar { display: none; }
.app-search { min-height: 43px; display: flex; align-items: center; gap: 8px; padding: 0 13px; color: var(--muted); background: var(--surface); border: 1px solid var(--border); border-radius: 999px; font-size: .72rem; }
.app-search > span:first-child { font-size: 1.05rem; }
.filter-row { display: flex; gap: 7px; margin: 11px 0; overflow: hidden; }
.filter-row span { flex: 0 0 auto; padding: 7px 11px; color: var(--muted); background: var(--surface); border: 1px solid var(--border); border-radius: 999px; font-size: .66rem; }
.filter-row span.is-selected { color: var(--focus); background: var(--soft-blue); border-color: var(--soft-blue); font-weight: 600; }
.conversation-panel, .rule-panel, .setting-panel { overflow: hidden; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.conversation-row { min-height: 79px; display: grid; grid-template-columns: 48px minmax(0,1fr) auto; align-items: center; gap: 10px; padding: 11px; border-bottom: 1px solid var(--border); }
.conversation-row:last-child { border-bottom: 0; }
.avatar { position: relative; width: 46px; height: 46px; display: grid; place-items: center; color: var(--focus); background: var(--soft-blue); border-radius: 15px; font-size: .78rem; font-weight: 600; }
.avatar > span { position: absolute; right: 1px; bottom: 1px; width: 10px; height: 10px; background: var(--positive); border: 2px solid #fff; border-radius: 50%; }
.avatar-sky { color: #08719a; background: var(--soft-sky); }
.avatar-green { color: var(--positive); background: var(--positive-bg); }
.conversation-copy { min-width: 0; }
.conversation-copy strong, .conversation-copy p { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conversation-copy strong { display: block; font-size: .76rem; font-weight: 600; }
.conversation-copy p { margin: 5px 0 0; color: var(--muted); font-size: .67rem; }
.conversation-meta { align-self: stretch; display: flex; flex-direction: column; align-items: end; justify-content: space-between; }
.conversation-meta time { color: #8792a4; font-size: .58rem; }
.conversation-meta b { min-width: 20px; height: 20px; display: grid; place-items: center; color: #fff; background: var(--primary); border-radius: 999px; font-family: Inter, sans-serif; font-size: .58rem; }

.callback-summary { padding: 20px; background: radial-gradient(circle at 86% 16%, rgba(56,189,248,.44), transparent 34%), linear-gradient(135deg,#eaf2ff,#eef9ff 68%,#dceffd); border: 1px solid #d7e8ff; border-radius: 22px; }
.callback-summary > span { color: var(--focus); font-family: Inter,sans-serif; font-size: .58rem; font-weight: 700; letter-spacing: .1em; }
.callback-summary strong { display: block; margin-top: 24px; font-size: 1.1rem; line-height: 1.45; letter-spacing: -.04em; }
.callback-summary button { min-height: 38px; margin-top: 18px; padding: 0 13px; color: var(--focus); background: rgba(255,255,255,.82); border: 1px solid rgba(255,255,255,.9); border-radius: 999px; font-size: .65rem; font-weight: 600; }
.rule-panel { margin-top: 12px; }
.rule-panel label { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.rule-panel label:last-child { border-bottom: 0; }
.rule-panel label > span { display: grid; grid-template-columns: 34px 1fr; column-gap: 9px; align-items: center; }
.rule-panel i { grid-row: 1 / 3; width: 34px; height: 34px; display: grid; place-items: center; color: var(--focus); background: var(--soft-blue); border-radius: 11px; font-style: normal; font-size: .7rem; }
.rule-panel strong { font-size: .72rem; font-weight: 600; }
.rule-panel small { color: var(--muted); font-size: .6rem; }
.rule-panel input { width: 34px; height: 20px; accent-color: var(--primary); }

.pass-card { padding: 20px; color: #fff; background: radial-gradient(circle at 88% 10%, rgba(56,189,248,.85),transparent 34%), linear-gradient(135deg,#2563eb,#075ab8); border-radius: 22px; box-shadow: 0 16px 34px rgba(37,99,235,.2); }
.pass-card span, .pass-card strong, .pass-card small { display: block; }
.pass-card span { color: #dce9ff; font-size: .62rem; }
.pass-card strong { margin-top: 28px; font-size: 1rem; font-weight: 600; }
.pass-card small { margin-top: 5px; color: #cfe3ff; font-size: .63rem; }
.panel-title { margin: 18px 3px 8px; font-size: .69rem; font-weight: 600; }
.setting-panel a { min-height: 59px; display: flex; align-items: center; justify-content: space-between; padding: 9px 13px; border-bottom: 1px solid var(--border); }
.setting-panel a:last-child { border-bottom: 0; }
.setting-panel strong, .setting-panel small { display: block; }
.setting-panel strong { font-size: .72rem; font-weight: 600; }
.setting-panel small { margin-top: 4px; color: var(--muted); font-size: .6rem; }
.setting-panel b { color: var(--muted); font-size: 1.1rem; font-weight: 400; }
.setting-panel.compact a { min-height: 48px; }
.app-bottom-nav { display: grid; grid-template-columns: repeat(3,1fr); padding: 6px 10px 7px; background: var(--surface); border-top: 1px solid var(--border); }
.app-bottom-nav button { min-height: 52px; display: grid; place-items: center; gap: 3px; padding: 4px 6px; color: var(--muted); background: transparent; border: 0; border-radius: 15px; font-size: .62rem; cursor: pointer; }
.app-bottom-nav button.is-active { color: var(--focus); background: var(--soft-blue); font-weight: 600; }
.app-bottom-nav button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.section-space { padding: 78px 0; }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .release-copy h2, .feedback-card h2 { font-size: clamp(2.25rem,10vw,4rem); font-weight: 500; }
.design-grid { display: grid; gap: 10px; }
.design-grid article { min-height: 160px; padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.design-grid article > span { color: var(--primary); font-family: Inter,sans-serif; font-size: .69rem; font-weight: 700; }
.design-grid h3 { margin: 30px 0 8px; font-size: 1.05rem; font-weight: 600; }
.design-grid p { margin: 0; color: var(--muted); font-size: .87rem; line-height: 1.6; }
.token-row { display: flex; gap: 9px; margin-top: 18px; overflow-x: auto; padding-bottom: 5px; scrollbar-width: none; }
.token-row::-webkit-scrollbar { display: none; }
.token-row > span { flex: 0 0 auto; display: flex; align-items: center; gap: 8px; padding: 7px 11px 7px 7px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-family: Inter,sans-serif; font-size: .68rem; }
.token-row i { width: 24px; height: 24px; background: var(--token); border: 1px solid rgba(23,32,51,.1); border-radius: 50%; }

.sms-group-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sms-group-layout { display: grid; gap: 34px; }
.sms-group-copy h2 { margin: 0; font-size: clamp(2.25rem,10vw,4rem); font-weight: 600; letter-spacing: -.065em; line-height: 1.08; }
.sms-group-copy > p:not(.eyebrow) { max-width: 31rem; margin: 18px 0 0; color: var(--muted); font-size: .98rem; line-height: 1.72; }
.sms-points { display: flex; flex-wrap: wrap; gap: 7px; margin: 22px 0 24px; }
.sms-points span { padding: 8px 10px; color: var(--primary); background: var(--blue-soft); border: 1px solid #d7e5ff; border-radius: 999px; font-size: .75rem; font-weight: 700; }
.sms-group-copy .primary-button { width: fit-content; }
.sms-room { display: grid; gap: 11px; padding: 20px; background: var(--ink-deep); border-radius: 26px; box-shadow: 0 28px 70px rgba(15,23,40,.18); }
.sms-room-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 15px; border-bottom: 1px solid rgba(255,255,255,.1); }
.sms-room-head small, .sms-room-head strong { display: block; }
.sms-room-head small { color: #8ea0bb; font-size: .68rem; font-weight: 700; }
.sms-room-head strong { margin-top: 4px; color: #fff; font-size: 1rem; }
.sms-room-head b { color: #8ed9fb; font-size: .76rem; }
.sms-room-people { display: flex; gap: 6px; padding: 2px 0 7px; }
.sms-room-people span { padding: 5px 8px; color: #b7c4d6; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.09); border-radius: 999px; font-size: .68rem; }
.sms-bubble { max-width: 88%; }
.sms-bubble small { display: block; margin: 0 0 4px 4px; color: #8ea0bb; font-size: .65rem; font-weight: 700; }
.sms-bubble p { margin: 0; padding: 11px 13px; color: var(--ink); background: #fff; border-radius: 5px 15px 15px 15px; font-size: .8rem; line-height: 1.55; }
.sms-bubble.mine { justify-self: end; }
.sms-bubble.mine small { text-align: right; }
.sms-bubble.mine p { color: #fff; background: var(--primary); border-radius: 15px 5px 15px 15px; }
.sms-system { padding: 4px 0; color: #8ea0bb; text-align: center; font-size: .68rem; }

.release-section { color: #fff; background: #172033; }
.release-layout { display: grid; gap: 44px; }
.release-copy > p:not(.eyebrow):first-of-type { margin: 18px 0 0; color: #b4bfd0; line-height: 1.7; }
.release-facts { margin: 30px 0 0; }
.release-facts div { display: grid; grid-template-columns: 90px 1fr; gap: 14px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.release-facts dt { color: #94a3b8; font-size: .78rem; }
.release-facts dd { margin: 0; font-family: Inter,"Noto Sans KR",sans-serif; font-size: .82rem; font-weight: 600; }
.apk-button { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-top: 24px; padding: 15px 18px; color: #172033; background: #fff; border-radius: 18px; }
.apk-button small, .apk-button strong { display: block; }
.apk-button small { color: var(--focus); font-family: Inter,sans-serif; font-size: .62rem; font-weight: 700; letter-spacing: .08em; }
.apk-button strong { margin-top: 4px; font-size: 1rem; }
.apk-button b { width: 44px; height: 44px; display: grid; place-items: center; color: #fff; background: var(--primary); border-radius: 14px; font-size: 1.15rem; }
.build-warning { margin: 13px 3px 0; color: #95a5bc; font-size: .72rem; line-height: 1.55; }
.install-panel { padding: 24px; color: var(--ink); background: rgba(255,255,255,.96); border: 1px solid rgba(255,255,255,.18); border-radius: 24px; }
.install-heading span { color: var(--focus); font-family: Inter,sans-serif; font-size: .64rem; font-weight: 700; letter-spacing: .1em; }
.install-heading h3 { margin: 6px 0 0; font-size: 1.45rem; font-weight: 600; }
.install-panel ol { display: grid; gap: 0; margin: 22px 0 0; padding: 0; list-style: none; }
.install-panel li { display: grid; grid-template-columns: 32px 1fr; gap: 11px; padding: 13px 0; border-bottom: 1px solid var(--border); }
.install-panel li > span { width: 28px; height: 28px; display: grid; place-items: center; color: var(--focus); background: var(--soft-blue); border-radius: 10px; font-family: Inter,sans-serif; font-size: .68rem; font-weight: 700; }
.install-panel li strong { display: block; font-size: .84rem; font-weight: 600; }
.install-panel li p { margin: 4px 0 0; color: var(--muted); font-size: .72rem; line-height: 1.5; }
.checksum { position: relative; margin-top: 18px; padding: 13px; background: var(--bg); border: 1px solid var(--border); border-radius: 15px; }
.checksum > span { display: block; color: var(--muted); font-family: Inter,sans-serif; font-size: .62rem; font-weight: 700; }
.checksum code { display: block; margin: 8px 48px 0 0; overflow-wrap: anywhere; color: #334155; font-size: .6rem; line-height: 1.5; }
.checksum button { position: absolute; top: 10px; right: 10px; min-height: 32px; padding: 0 10px; color: var(--focus); background: var(--soft-blue); border: 0; border-radius: 9px; font-size: .67rem; font-weight: 600; cursor: pointer; }

.test-layout { display: grid; gap: 26px; }
.checklist { display: grid; gap: 9px; }
.checklist label { min-height: 70px; display: flex; align-items: center; gap: 13px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: 17px; cursor: pointer; }
.checklist input { width: 22px; height: 22px; accent-color: var(--primary); }
.checklist strong, .checklist small { display: block; }
.checklist strong { font-size: .9rem; font-weight: 600; }
.checklist small { margin-top: 3px; color: var(--muted); font-size: .72rem; }

.feedback-section { padding: 0 0 78px; }
.feedback-card { padding: 28px 22px; color: #fff; background: linear-gradient(135deg,#075ab8,#2563eb 70%,#2186d9); border-radius: 26px; box-shadow: 0 20px 50px rgba(37,99,235,.17); }
.feedback-card > div > span { color: #d5e8ff; font-family: Inter,sans-serif; font-size: .65rem; font-weight: 700; letter-spacing: .11em; }
.feedback-card h2 { margin-top: 9px; font-size: clamp(2rem,8vw,3.1rem); }
.feedback-card > div > p { margin: 14px 0 0; color: #dbeafe; font-size: .86rem; }
.feedback-card form { display: grid; gap: 12px; margin-top: 28px; }
.feedback-card label > span { display: block; margin: 0 0 6px 2px; color: #dbeafe; font-size: .7rem; }
.feedback-card input, .feedback-card select, .feedback-card textarea { width: 100%; color: var(--ink); background: #fff; border: 1px solid rgba(255,255,255,.35); border-radius: 13px; outline: 0; }
.feedback-card input, .feedback-card select { min-height: 48px; padding: 0 12px; }
.feedback-card textarea { padding: 12px; resize: vertical; }
.feedback-card form > button { min-height: 50px; color: var(--ink); background: #fff; border: 0; border-radius: 14px; font-weight: 600; cursor: pointer; }
.feedback-status { min-height: 20px; margin: 11px 2px 0; color: #dbeafe; font-size: .74rem; }

.bottom-download-section { padding: 72px 0 78px; background: var(--bg); }
.bottom-download-card { display: grid; gap: 26px; padding: 28px 24px; color: #fff; background: var(--ink-deep); border-radius: 28px; }
.bottom-download-card > div > span { color: #8ed9fb; font-family: Inter,sans-serif; font-size: .69rem; font-weight: 700; letter-spacing: .12em; }
.bottom-download-card h2 { margin: 9px 0 0; font-size: clamp(2rem,9vw,3.3rem); font-weight: 600; letter-spacing: -.06em; line-height: 1.1; }
.bottom-download-card p { margin: 13px 0 0; color: #a9b6ca; font-size: .9rem; line-height: 1.65; }
.bottom-download-button { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 15px 17px; color: #fff; background: var(--primary); border-radius: 16px; box-shadow: 0 16px 36px rgba(37,99,235,.28); }
.bottom-download-button small, .bottom-download-button strong { display: block; }
.bottom-download-button small { color: rgba(255,255,255,.7); font-family: Inter,sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .09em; }
.bottom-download-button strong { margin-top: 4px; font-size: .92rem; }
.bottom-download-button b { font-size: 1.2rem; }

@media (min-width: 760px) {
  .shell { width: min(calc(100% - 64px),1180px); }
  .hero-section { padding: 80px 0 100px; }
  .hero-layout { grid-template-columns: minmax(0,1fr) minmax(360px,430px); align-items: center; gap: 70px; }
  .hero-actions { grid-template-columns: max-content max-content; }
  .primary-button, .secondary-button { min-width: 190px; }
  .section-space { padding: 100px 0; }
  .design-grid { grid-template-columns: repeat(3,1fr); }
  .design-grid article { min-height: 200px; }
  .sms-group-layout { grid-template-columns: minmax(0,.9fr) minmax(350px,1.1fr); align-items: center; gap: 78px; }
  .sms-room { padding: 27px; transform: rotate(1.1deg); }
  .release-layout { grid-template-columns: minmax(0,1fr) minmax(360px,.85fr); align-items: center; gap: 70px; }
  .install-panel { padding: 30px; }
  .test-layout { grid-template-columns: .72fr 1.28fr; align-items: start; gap: 70px; }
  .checklist { grid-template-columns: repeat(2,1fr); }
  .checklist label:last-child { grid-column: 1 / -1; }
  .feedback-card { padding: 42px; }
  .feedback-card form { grid-template-columns: 1fr 1fr; }
  .feedback-detail, .feedback-card form > button { grid-column: 1 / -1; }
  .bottom-download-section { padding: 98px 0 104px; }
  .bottom-download-card { grid-template-columns: minmax(0,1fr) minmax(320px,.72fr); align-items: center; gap: 70px; padding: 46px; }
}

@media (min-width: 1080px) {
  .hero-layout { grid-template-columns: minmax(0,1fr) 430px; gap: 100px; }
  .hero-copy h1 { font-size: 5.5rem; }
}

@media (max-width: 389px) {
  .shell { width: min(calc(100% - 28px),1180px); }
  .hero-copy h1 { font-size: 2.95rem; }
  .phone-frame { height: 680px; border-width: 7px; border-radius: 34px; }
  .screen-tabs button { padding-inline: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}