/*
 * © 2026 SmartnessHome. All rights reserved.
 * Proprietary and confidential. Unauthorized copying, modification,
 * distribution, or reverse engineering of this file is strictly prohibited.
 */

:root {
  --ink: #17130e;
  --ink-soft: #57503f;
  --ink-faint: #6f6754;
  --paper: #faf8f4;
  --card: #ffffff;
  --line: #e8e2d6;
  --accent: #c2410c;
  --accent-soft: #fff1e7;
  --ok: #1a7f4b;
  --radius: 18px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

[id] { scroll-margin-top: 76px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.1rem; color: var(--ink); letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
.site-nav { display: flex; gap: 22px; font-size: 0.95rem; }
.site-nav a { color: var(--ink-soft); font-weight: 500; }
.site-nav a:hover { color: var(--ink); text-decoration: none; }

/* ---------- hero ---------- */
.hero { padding: 84px 0 56px; text-align: center; }
.hero h1 {
  font-size: clamp(2.1rem, 5.4vw, 3.4rem);
  line-height: 1.12; letter-spacing: -0.025em; margin: 0 0 18px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede {
  max-width: 620px; margin: 0 auto 30px;
  font-size: 1.15rem; color: var(--ink-soft);
}
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 26px; border-radius: 999px;
  font-weight: 600; font-size: 1rem;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; text-decoration: none; }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink); background: var(--card); }
.btn-ghost:hover { border-color: var(--ink-faint); text-decoration: none; }

.stats {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
  margin-top: 44px;
}
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 22px; min-width: 150px;
}
.stat b { display: block; font-size: 1.35rem; letter-spacing: -0.02em; }
.stat span { color: var(--ink-faint); font-size: 0.85rem; }

/* ---------- sections ---------- */
section { padding: 56px 0; }
.section-head { max-width: 640px; margin: 0 0 36px; }
.section-head h2 {
  font-size: clamp(1.5rem, 3.2vw, 2.1rem);
  letter-spacing: -0.02em; margin: 0 0 10px;
}
.section-head p { color: var(--ink-soft); margin: 0; }
.kicker {
  display: inline-block; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 10px;
}

/* ---------- app cards ---------- */
.app-card {
  display: grid; grid-template-columns: 300px 1fr; gap: 0;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; margin-bottom: 26px;
}
.app-shot {
  background: var(--shot-bg, #f1ede4);
  display: flex; align-items: flex-end; justify-content: center;
  padding: 30px 30px 0;
}
.app-shot img {
  width: 220px; height: auto; border-radius: 18px 18px 0 0;
  box-shadow: 0 8px 30px rgba(23, 19, 14, 0.18);
}
.app-body { padding: 30px 34px 26px; display: flex; flex-direction: column; }
.app-title { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.app-title img { width: 52px; height: 52px; border-radius: 12px; }
.app-title h3 { margin: 0; font-size: 1.35rem; letter-spacing: -0.015em; }
.app-title .cat {
  display: block; font-size: 0.82rem; color: var(--ink-faint);
  font-weight: 500; margin-top: 1px;
}
.app-tagline { font-weight: 600; margin: 6px 0 8px; }
.app-body > p { color: var(--ink-soft); margin: 0 0 14px; font-size: 0.98rem; }
.app-points {
  list-style: none; padding: 0; margin: 0 0 20px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.app-points li {
  font-size: 0.85rem; font-weight: 500; color: var(--ink-soft);
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 13px;
}
.app-actions { margin-top: auto; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.app-actions .play-badge img { width: 162px; height: auto; }
.app-actions .site-link { font-weight: 600; font-size: 0.95rem; }
.ios-note { font-size: 0.82rem; color: var(--ink-faint); }

.app-card.coming {
  grid-template-columns: 1fr; border-style: dashed; background: transparent;
}
.app-card.coming .app-body { padding: 26px 34px; }
.badge-soon {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: #167243; background: #e8f5ee; border-radius: 999px; padding: 4px 12px;
}

/* ---------- principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.principle {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.principle .ico {
  width: 44px; height: 44px; border-radius: 12px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
  font-size: 1.3rem;
}
.principle h3 { margin: 0 0 8px; font-size: 1.08rem; }
.principle p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- faq ---------- */
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 4px 22px; margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--ink-faint); flex-shrink: 0; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 16px; color: var(--ink-soft); }

/* ---------- cta band ---------- */
.cta-band {
  background: var(--ink); color: #fff; border-radius: var(--radius);
  padding: 46px 40px; text-align: center;
}
.cta-band h2 { margin: 0 0 10px; letter-spacing: -0.02em; font-size: clamp(1.4rem, 3vw, 1.9rem); }
.cta-band p { margin: 0 0 24px; color: #cfc8ba; }
.cta-band .btn-primary { background: #fff; color: var(--ink); }
.cta-band .btn-primary:hover { background: var(--paper); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 40px;
  padding: 36px 0 46px; font-size: 0.9rem; color: var(--ink-faint);
}
.site-footer .wrap {
  display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center;
}
.footer-links { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--ink-soft); font-weight: 500; }
.footer-links span { color: var(--line); }

/* ---------- legal pages ---------- */
.legal { max-width: 760px; margin: 0 auto; padding: 56px 24px 40px; }
.legal h1 { font-size: 2rem; letter-spacing: -0.02em; margin: 0 0 6px; }
.legal .updated { color: var(--ink-faint); font-size: 0.9rem; margin-bottom: 34px; }
.legal h2 { font-size: 1.25rem; margin: 34px 0 10px; letter-spacing: -0.01em; }
.legal p, .legal li { color: var(--ink-soft); }
.legal table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
.legal th, .legal td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.legal th { background: var(--card); color: var(--ink); }
.table-scroll { overflow-x: auto; }

.legal .note {
  background: var(--accent-soft); border: 1px solid #f6d9c4; border-radius: 14px;
  padding: 16px 20px; color: var(--ink);
}

/* ---------- blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.post-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.post-card a.cover-link { display: block; }
.post-card img { width: 100%; height: auto; display: block; }
.post-card .pc-body { padding: 20px 24px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.post-card h2 { margin: 0; font-size: 1.15rem; letter-spacing: -0.01em; line-height: 1.35; }
.post-card h2 a { color: var(--ink); }
.post-card p { margin: 0; color: var(--ink-soft); font-size: 0.93rem; }
.post-card .pc-meta { margin-top: auto; padding-top: 8px; font-size: 0.82rem; color: var(--ink-faint); }

.post-cover { border-radius: var(--radius); overflow: hidden; margin: 26px 0; border: 1px solid var(--line); }
.post-cover img { width: 100%; height: auto; display: block; }
.post-meta { color: var(--ink-faint); font-size: 0.9rem; margin-bottom: 6px; }
.breadcrumbs { font-size: 0.85rem; color: var(--ink-faint); margin-bottom: 18px; }
.breadcrumbs a { color: var(--ink-soft); }

.cta-box {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 26px; margin: 34px 0; display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.cta-box p { margin: 0; flex: 1 1 260px; }
.cta-box .play-badge img { width: 150px; height: auto; }

.author-box {
  display: flex; gap: 14px; align-items: center; border-top: 1px solid var(--line);
  margin-top: 40px; padding-top: 22px; font-size: 0.93rem; color: var(--ink-soft);
}
.author-box svg { width: 40px; height: 40px; flex-shrink: 0; }
.author-box p { margin: 0; }

.related { border-top: 1px solid var(--line); margin-top: 34px; padding-top: 24px; }
.related h2 { font-size: 1.15rem; margin: 0 0 12px; }
.related ul { margin: 0; padding-left: 20px; }
.related li { margin-bottom: 6px; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .principles { grid-template-columns: 1fr; }
  .app-card { grid-template-columns: 1fr; }
  .app-shot { padding: 26px 26px 0; }
  .app-shot img { width: 190px; }
  .site-nav { gap: 16px; font-size: 0.9rem; }
  .site-nav .nav-extra { display: none; }
  .hero { padding: 56px 0 40px; }
}