/* Ssak landing: warm surfaces, clear hierarchy, quiet interaction. */
:root {
  color-scheme: light;
  --bg: #fff9ef;
  --paper: #fffdf9;
  --brown: #895b3d;
  --ink: #443127;
  --muted: #746357;
  --line: #e5d7c5;
  --soft: #f5e9d9;
  --coral: #ff8068;
  --radius: 24px;
  --font: system-ui, -apple-system, 'Segoe UI', 'Malgun Gothic', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; color: var(--ink); background: var(--bg); font: 16px/1.75 var(--font); }
a { color: inherit; text-underline-offset: 5px; touch-action: manipulation; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--brown); outline-offset: 5px; }
.wrap { max-width: 1240px; margin: auto; padding: 0 48px; }
.skip { position: absolute; top: -100px; background: var(--paper); padding: 12px; z-index: 5; }
.skip:focus { top: 8px; }
header { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; border-bottom: 1px solid var(--line); gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; text-decoration: none; font-weight: 750; font-size: 30px; letter-spacing: -1.5px; }
.brand svg { width: 38px; height: 44px; flex-shrink: 0; }
nav { display: flex; gap: 8px; flex-wrap: wrap; }
nav a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 12px; border-radius: 12px; font-size: 13px; text-decoration: none; color: var(--muted); transition: background-color 160ms ease; }
nav a[aria-current] { background: var(--soft); color: var(--ink); font-weight: 600; }
.hero { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(0,1fr); align-items: center; column-gap: 64px; row-gap: 32px; padding: 80px 0 48px; }
.hero-copy, .illustration { min-width: 0; }
.eyebrow { font-size: 12px; letter-spacing: .12em; font-weight: 650; color: var(--brown); margin: 0 0 24px; }
.hero-copy > .eyebrow { display: flex; align-items: center; gap: 10px; }
.hero-copy > .eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); flex-shrink: 0; }
h1 { font: 650 clamp(38px,4.2vw,60px)/1.2 var(--font); letter-spacing: -.055em; margin: 0 0 24px; word-break: keep-all; overflow-wrap: anywhere; }
.headline-line { display: block; }
.headline-line.accent { color: var(--brown); }
.lead { font-size: 17px; color: var(--muted); max-width: 450px; margin: 0 0 32px; word-break: keep-all; overflow-wrap: anywhere; }
.hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.store-actions { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 48px; padding: 12px 24px; background: var(--brown); border: 1px solid transparent; border-radius: 14px; color: white; font-weight: 600; font-size: 14px; line-height: 1.2; text-align: center; text-decoration: none; transition: background-color 160ms ease, box-shadow 160ms ease; }
.button-label { display: block; }
.button-icon, .how-link-icon { display: block; width: 16px; height: 16px; flex-shrink: 0; }
.button:active { background: var(--ink); box-shadow: inset 0 2px 4px #0002; }
.how-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 6px 4px; font-size: 13px; line-height: 1.25; color: var(--muted); text-decoration: none; }
.how-link-content { display: inline-flex; align-items: center; gap: 8px; padding-bottom: 3px; border-bottom: 1px solid currentColor; }
.micro, .fine { font-size: 12px; color: var(--muted); }
.micro { margin: 16px 0 0; }
.illustration { position: relative; padding: 24px 20px 0; }
.illustration::before { content: ''; position: absolute; inset: 0 0 52px; border-radius: 36px; background: var(--soft); }
.habit-card { position: relative; background: var(--paper); padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 12px 32px #7954360b; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 12px; }
.card-top svg { width: 28px; height: 32px; flex-shrink: 0; }
.habit-name { font-size: 26px; font-weight: 650; letter-spacing: -.035em; margin: 24px 0 0; }
.timing { font-size: 14px; color: var(--muted); margin: 4px 0 24px; }
.goal-pair { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.goal { display: flex; flex-direction: column; gap: 8px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; }
.goal > span { font-size: 12px; color: var(--muted); }
.goal strong { font-size: 28px; line-height: 1.2; font-weight: 650; letter-spacing: -.035em; overflow-wrap: anywhere; }
.goal > .goal-action { font-size: 14px; color: var(--ink); }
.small-goal { background: var(--soft); border-color: #ba977a; }
.small-goal strong { color: var(--brown); }
.record-example { border-top: 1px solid var(--line); margin-top: 24px; padding-top: 20px; display: grid; gap: 8px; }
.record-example > span { font-size: 12px; color: var(--muted); }
.record-example strong { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 550; line-height: 1.6; }
.record-example svg { width: 24px; height: 24px; padding: 3px; border-radius: 50%; background: var(--soft); color: var(--brown); flex-shrink: 0; }
.caption { position: relative; text-align: center; font-size: 12px; color: var(--muted); margin: 20px 0 0; line-height: 1.6; }
.habit-examples { grid-column: 1/-1; text-align: center; font-size: 14px; color: var(--muted); margin: 0; }
.ribbon { display: flex; justify-content: center; gap: 64px; padding: 24px 0; border-block: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.ribbon span { display: inline-flex; align-items: center; gap: 10px; }
.ribbon span::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--brown); }
.how, .plans, .faq { padding: 80px 0; }
.section-heading h2 { font: 600 36px/1.4 var(--font); letter-spacing: -.04em; margin: 0 0 16px; word-break: keep-all; overflow-wrap: anywhere; }
.section-heading > p:not(.eyebrow) { color: var(--muted); font-size: 16px; }
.steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; margin-top: 40px; }
.number { display: inline-block; font-size: 14px; color: var(--brown); border-top: 2px solid var(--line); padding-top: 16px; min-width: 40px; }
h3 { font-size: 20px; letter-spacing: -.025em; line-height: 1.5; }
.steps p { font-size: 16px; color: var(--muted); }
.plans { border-top: 1px solid var(--line); }
.plan-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; margin-top: 32px; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; background: var(--paper); }
.plan.plus { background: var(--soft); }
.tag { font-size: 12px; letter-spacing: .1em; color: var(--brown); }
.plan h3 { font-size: 26px; margin: 16px 0 12px; }
.plan p, .plan li { font-size: 16px; }
.plan p { color: var(--muted); }
.plan ul { padding-left: 20px; margin: 24px 0 0; }
.plan li { padding: 4px 0; }
.fine { max-width: 800px; margin-top: 24px; }
.faq { border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.3fr); gap: 48px; }
.faq details { border-bottom: 1px solid var(--line); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 550; font-size: 16px; min-height: 44px; padding: 8px 0; }
.faq details p { font-size: 16px; color: var(--muted); }
.start { text-align: center; background: var(--soft); border-radius: 28px; padding: 56px 24px; margin-bottom: 64px; }
.start > div > svg { width: 64px; height: 64px; }
.start .eyebrow { margin: 16px 0 24px; }
.start h2 { font: 600 36px/1.4 var(--font); letter-spacing: -.04em; margin: 0 0 24px; overflow-wrap: anywhere; }
.start p:not(.eyebrow) { max-width: 510px; margin: 0 auto; color: var(--muted); font-size: 16px; }
.platforms { display: flex; justify-content: center; gap: 12px; margin: 24px 0; flex-wrap: wrap; }
.platforms span { border: 1px solid #bca082; border-radius: 10px; font-size: 12px; padding: 6px 14px; }
footer { display: flex; align-items: center; gap: 24px; border-top: 1px solid var(--line); padding: 24px 0 32px; }
footer p { font-size: 12px; color: var(--muted); flex: 1; }
footer > div { display: flex; gap: 8px 20px; font-size: 12px; flex-wrap: wrap; }
footer > div a { display: inline-flex; align-items: center; min-height: 44px; }
@media (hover: hover) {
  nav a:hover { background: var(--soft); }
  .button:hover { background: #704a31; box-shadow: 0 4px 12px #79543616; }
  .how-link:hover, footer > div a:hover { color: var(--brown); }
}
@media (max-width: 1024px) {
  .wrap { padding: 0 32px; }
  .hero { column-gap: 32px; padding-top: 64px; }
  h1 { font-size: 44px; }
  .illustration { padding: 20px 16px 0; }
  .habit-card { padding: 24px; }
  .goal { padding: 12px; }
  .goal strong { font-size: 26px; }
  .steps { gap: 24px; }
  footer { flex-wrap: wrap; }
}
@media (max-width: 767px) {
  .wrap { padding: 0 24px; }
  header { padding: 16px 0; flex-wrap: wrap; gap: 12px; }
  .brand { font-size: 28px; }
  .brand svg { width: 32px; height: 38px; }
  nav { gap: 8px; }
  nav a { font-size: 12px; padding-inline: 10px; }
  .hero { grid-template-columns: minmax(0,1fr); padding: 40px 0 32px; gap: 32px; }
  .hero-copy { max-width: 520px; }
  .eyebrow { margin-bottom: 20px; letter-spacing: .06em; }
  h1 { font-size: clamp(34px,7vw,46px); margin-bottom: 24px; }
  .lead { font-size: 16px; margin-bottom: 24px; }
  .hero-actions { gap: 12px; }
  .button { gap: 16px; padding: 12px 18px; }
  .micro { margin-top: 12px; }
  .illustration { width: 100%; max-width: 440px; margin: auto; padding: 16px 12px 0; }
  .illustration::before { border-radius: 28px; }
  .habit-card { padding: 24px; }
  .habit-name { font-size: 24px; margin-top: 16px; }
  .timing { margin-bottom: 20px; }
  .goal { padding: 14px 12px; }
  .record-example { margin-top: 20px; padding-top: 16px; }
  .caption { font-size: 12px; margin-top: 16px; }
  .habit-examples { font-size: 13px; }
  .ribbon { gap: 12px 24px; padding: 20px 0; flex-wrap: wrap; font-size: 12px; }
  .how, .plans, .faq { padding: 56px 0; }
  .section-heading h2, .start h2 { font-size: 30px; }
  .steps, .plan-grid, .faq { grid-template-columns: minmax(0,1fr); }
  .steps { gap: 24px; margin-top: 32px; }
  .steps h3 { margin: 12px 0; }
  .steps p { margin-bottom: 0; }
  .plan { padding: 24px; }
  .faq { gap: 16px; }
  .start { padding: 40px 20px; margin-bottom: 40px; }
  footer { gap: 12px; }
  footer p { min-width: 160px; }
  footer > div { width: 100%; }
}
@media (max-width: 480px) {
  nav { width: 100%; justify-content: space-between; }
  nav a { padding-inline: 8px; }
}
@media (max-width: 360px) {
  .wrap { padding: 0 20px; }
  .habit-card { padding: 20px; }
  .illustration { padding-inline: 8px; }
  .goal-pair { gap: 8px; }
  .goal { padding: 12px 10px; }
  .goal strong { font-size: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a { transition: none; }
}