/* LogLoom 公式サイト。配色・書体は aiconication.com とヨルヨミ公式サイトの設計トークン
   （黒い舞台・水色のラベル・明朝の見出し）に合わせ、アプリアイコンの
   紺の夜空 × 三日月のクリーム × 金の声の波形で「会話を織る」を描く。 */
:root {
  --color-black: #000;
  --color-bg: #03081a;
  --color-navy: #0b1d4a;
  --color-surface: rgba(8, 18, 44, 0.72);
  --color-surface-strong: #071233;
  --color-text: #f3eee2;
  --color-text-muted: #cdd0d6;
  --color-text-subtle: #a6abb6;
  --color-accent: #91ded6;
  --color-accent-soft: rgba(145, 222, 214, 0.14);
  --color-cream: #f0dfb4;
  --color-gold: #f2c66d;
  --color-gold-soft: rgba(242, 198, 109, 0.16);
  --color-line: rgba(226, 232, 245, 0.18);
  --color-line-strong: rgba(240, 223, 180, 0.6);
  --color-focus: #f2c66d;

  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  --font-serif: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --font-size-label: 0.8125rem;
  --font-size-sm: 0.9375rem;
  --font-size-body: 1.0625rem;
  --font-size-lead: clamp(1.0625rem, 0.98rem + 0.4vw, 1.25rem);
  --font-size-h3: clamp(1.25rem, 1.12rem + 0.6vw, 1.5rem);
  --font-size-h2: clamp(2rem, 1.45rem + 2.4vw, 3.5rem);
  --font-size-display: clamp(2.375rem, 1.5rem + 3.8vw, 5rem);

  --line-height-body: 1.85;
  --line-height-heading: 1.2;
  --letter-spacing-label: 0.16em;

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-section: clamp(5rem, 3rem + 7vw, 9.5rem);
  --gutter: clamp(1rem, 0.4rem + 3vw, 4.5rem);
  --content-max: 76rem;
  --text-max: 44rem;
  --header-height: 4.5rem;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 22px;

  --duration-fast: 160ms;
  --duration-base: 320ms;
  --duration-reveal: 760ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  background: var(--color-black);
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  -webkit-font-smoothing: antialiased;
}
img, video, svg, iframe { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 400; line-height: var(--line-height-heading); text-wrap: balance; }
p, dl, dd, dt, ol, ul, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
::selection { color: var(--color-black); background: var(--color-cream); }
:lang(ja) :is(h1, h2, h3) { word-break: keep-all; overflow-wrap: anywhere; line-break: strict; }
:lang(ja) :is(p, li, dd, dt, figcaption, summary) { line-break: strict; overflow-wrap: anywhere; word-break: auto-phrase; text-wrap: pretty; }
.heading-line { display: block; }
h1 em, h2 em { color: var(--color-gold); font-style: normal; }

.skip {
  position: absolute; top: -100px; left: var(--gutter); z-index: 100;
  padding: var(--space-2) var(--space-4); background: var(--color-cream); color: var(--color-black);
  border-radius: var(--radius-sm); font-weight: 700;
}
.skip:focus { top: var(--space-3); }

/* ---------- 夜空と糸（canvas の下地） ---------- */
.loom {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(110% 70% at 50% -10%, rgba(22, 52, 120, 0.6), transparent 62%),
    radial-gradient(60% 40% at 88% 96%, rgba(242, 198, 109, 0.07), transparent 60%),
    var(--color-bg);
}

/* ---------- Label / Buttons ---------- */
.label {
  margin: 0 0 var(--space-4);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: var(--letter-spacing-label);
  text-transform: uppercase;
}
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  min-height: 52px; padding: 0.8em 1.6em;
  border-radius: 999px; border: 1px solid transparent;
  font-size: var(--font-size-sm); font-weight: 700; letter-spacing: 0.04em;
  transition: transform var(--duration-fast) var(--ease), background var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
  cursor: pointer;
}
.button:active { transform: translateY(1px); }
.button--ghost { border-color: var(--color-line); color: var(--color-text); background: rgba(3, 8, 26, 0.45); backdrop-filter: blur(8px); }
.button--ghost:hover { border-color: var(--color-line-strong); }

/* App Store の公開前バッジ（リンクなし）。公開後は a 要素と公式バッジに差し替える */
.store-badge {
  display: inline-flex; align-items: center; gap: 0.75rem;
  min-height: 56px; padding: 0.55rem 1.25rem 0.55rem 1rem;
  border-radius: 14px; border: 1px solid var(--color-line-strong);
  background: rgba(3, 8, 26, 0.65); color: var(--color-text);
  cursor: default;
}
.store-badge__glyph { width: 26px; height: 26px; color: var(--color-cream); flex: none; }
.store-badge__text { display: flex; flex-direction: column; line-height: 1.2; }
.store-badge__text small { font-size: 0.6875rem; letter-spacing: 0.08em; color: var(--color-text-subtle); }
.store-badge__text strong { font-size: 1.0625rem; letter-spacing: 0.04em; }
.store-badge__state { margin-left: 0.25rem; padding: 0.15rem 0.6rem; border-radius: 6px; background: var(--color-gold-soft); color: var(--color-gold); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; white-space: nowrap; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-5);
  height: var(--header-height); padding: 0 var(--gutter);
  background: linear-gradient(to bottom, rgba(3, 8, 26, 0.9), rgba(3, 8, 26, 0.0));
}
.brand { display: inline-flex; align-items: center; gap: 0.7rem; min-height: 48px; }
.brand__mark { width: 36px; height: 36px; border-radius: 9px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 600; letter-spacing: 0.06em; }
.brand__text small { font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: 0.22em; color: var(--color-text-subtle); }
.site-nav { display: flex; align-items: center; gap: clamp(0.75rem, 2vw, 1.75rem); }
.site-nav a { font-size: var(--font-size-sm); color: var(--color-text-muted); padding: 0.5rem 0; transition: color var(--duration-fast); }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-text); }
.site-nav__cta { color: var(--color-black) !important; background: var(--color-cream); border-radius: 999px; padding: 0.5rem 1.1rem !important; font-weight: 700; }
.site-nav__cta:hover { background: #f8ebc9; }
@media (max-width: 760px) {
  .site-nav a:not(.site-nav__cta) { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; z-index: 1;
  min-height: 100svh; display: grid; align-items: center;
  padding: calc(var(--header-height) + var(--space-7)) var(--gutter) var(--space-8);
}
.hero__inner {
  width: min(var(--content-max), 100%); margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); align-items: center; gap: clamp(2rem, 5vw, 5rem);
}
.hero__kicker { display: inline-flex; align-items: center; gap: 0.6em; color: var(--color-gold); text-transform: none; letter-spacing: 0.12em; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-gold); box-shadow: 0 0 0 0 rgba(242, 198, 109, 0.6); animation: pulse 2.4s ease-out infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(242, 198, 109, 0.55); } 100% { box-shadow: 0 0 0 12px rgba(242, 198, 109, 0); } }
.hero__name { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-5); }
.hero__icon { width: 72px; height: 72px; border-radius: 17px; box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.08); }
.hero__name p { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; letter-spacing: 0.06em; line-height: 1.2; }
.hero__name small { display: block; font-family: var(--font-mono); font-size: 0.75rem; font-weight: 400; letter-spacing: 0.2em; color: var(--color-text-subtle); }
.hero__title { font-family: var(--font-serif); font-size: var(--font-size-display); font-weight: 500; letter-spacing: 0.02em; }
.hero__title .heading-line { opacity: 0; transform: translateY(0.4em); animation: rise var(--duration-reveal) var(--ease) forwards; }
.hero__title .heading-line:nth-child(2) { animation-delay: 180ms; }
.hero__lead { max-width: 34em; margin-top: var(--space-5); color: var(--color-text-muted); font-size: var(--font-size-lead); opacity: 0; animation: rise var(--duration-reveal) var(--ease) 360ms forwards; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); margin-top: var(--space-6); opacity: 0; animation: rise var(--duration-reveal) var(--ease) 520ms forwards; }
.hero__facts { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); margin-top: var(--space-5); color: var(--color-text-subtle); font-size: var(--font-size-sm); opacity: 0; animation: rise var(--duration-reveal) var(--ease) 680ms forwards; }
.hero__facts li { display: inline-flex; align-items: center; gap: 0.5em; }
.hero__facts li::before { content: ""; width: 14px; height: 1px; background: var(--color-gold); }
@keyframes rise { to { opacity: 1; transform: none; } }
.hero__scroll {
  position: absolute; left: 50%; bottom: 1.5rem; transform: translateX(-50%);
  width: 44px; height: 44px; display: grid; place-items: center; opacity: 0.7;
}
.hero__scroll span { width: 1px; height: 28px; background: linear-gradient(to bottom, transparent, var(--color-cream)); animation: drip 2.2s ease-in-out infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* 端末モック（iPhone ＋ Apple Watch） */
.devices { position: relative; justify-self: center; display: grid; gap: var(--space-3); opacity: 0; animation: rise var(--duration-reveal) var(--ease) 420ms forwards; }
.phone__frame {
  position: relative; width: min(300px, 78vw); aspect-ratio: 9 / 19; padding: 10px;
  border-radius: 44px; background: linear-gradient(160deg, #1b2440, #050a18);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.8);
}
.phone__notch { position: absolute; top: 18px; left: 50%; transform: translateX(-50%); width: 34%; height: 24px; border-radius: 999px; background: #000; z-index: 2; }
.phone__screen {
  height: 100%; padding: 52px 16px 18px; border-radius: 35px; overflow: hidden;
  display: flex; flex-direction: column; gap: 0.5rem;
  background:
    radial-gradient(90% 45% at 50% 0%, rgba(40, 80, 170, 0.45), transparent 70%),
    radial-gradient(60% 40% at 90% 100%, rgba(242, 198, 109, 0.12), transparent 70%),
    #060d24;
  color: var(--color-text);
}
.phone__time { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-text-subtle); margin-top: -36px; margin-bottom: 16px; padding: 0 6px; }
.phone__status { letter-spacing: 0.1em; font-size: 0.5rem; }
.phone__eyebrow { font-family: var(--font-mono); font-size: 0.5625rem; letter-spacing: 0.2em; color: var(--color-accent); }
.phone__heading { font-family: var(--font-serif); font-size: 1.35rem; font-weight: 600; letter-spacing: 0.06em; line-height: 1.25; }
.phone__rec { display: flex; align-items: center; gap: 0.5rem; padding: 0.45rem 0.6rem; border-radius: 12px; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.07); font-size: 0.6875rem; color: var(--color-text-muted); }
.phone__rec i { width: 7px; height: 7px; border-radius: 50%; background: #f07a6a; flex: none; }
.phone__wave { display: flex; align-items: center; justify-content: space-between; height: 22px; flex: 1; min-width: 0; }
.phone__wave b { flex: none; width: 3px; height: 30%; border-radius: 2px; background: var(--color-gold); opacity: 0.9; animation: wave 1.8s ease-in-out infinite; }
.phone__wave b:nth-child(odd) { animation-duration: 2.3s; }
.phone__wave b:nth-child(3n) { animation-delay: -0.6s; background: var(--color-cream); }
.phone__wave b:nth-child(4n) { animation-delay: -1.1s; }
.phone__wave b:nth-child(5n) { animation-delay: -0.3s; }
@keyframes wave { 0%, 100% { height: 22%; } 50% { height: 95%; } }
.seg { position: relative; padding: 0.6rem 0.65rem 0.6rem 0.85rem; border-radius: 12px; background: rgba(255, 255, 255, 0.045); border: 1px solid rgba(255, 255, 255, 0.07); }
.seg::before { content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 2px; border-radius: 2px; background: var(--color-gold); }
.seg--next::before { background: var(--color-accent); }
.seg__time { font-family: var(--font-mono); font-size: 0.5625rem; letter-spacing: 0.1em; color: var(--color-text-subtle); }
.seg__title { font-size: 0.8125rem; font-weight: 700; line-height: 1.35; }
.seg__sum { margin-top: 0.15rem; font-size: 0.6875rem; line-height: 1.6; color: var(--color-text-muted); }
.seg__chips { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-top: 0.4rem; }
.seg__chips span { padding: 0.05rem 0.45rem; border-radius: 6px; font-size: 0.5625rem; letter-spacing: 0.04em; background: var(--color-gold-soft); color: var(--color-cream); }
.seg__chips span:nth-child(2) { background: rgba(240, 122, 106, 0.16); color: #f6b4a9; }
.seg__chips span:nth-child(3) { background: var(--color-accent-soft); color: var(--color-accent); }
.phone__digest { margin-top: auto; padding: 0.6rem 0.7rem; border-radius: 12px; background: var(--color-gold-soft); border: 1px solid rgba(242, 198, 109, 0.28); }
.phone__digest span { display: block; font-family: var(--font-mono); font-size: 0.5625rem; letter-spacing: 0.14em; color: var(--color-gold); }
.phone__digest p { font-size: 0.6875rem; line-height: 1.55; }

.watch { position: absolute; left: -100px; bottom: 120px; width: 112px; padding: 8px; border-radius: 30px; background: linear-gradient(160deg, #222b45, #070b18); box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(255, 255, 255, 0.08); }
.watch__screen { aspect-ratio: 4 / 5; border-radius: 22px; background: #000; display: grid; place-items: center; align-content: center; gap: 6px; padding: 10px; text-align: center; }
.watch__btn { width: 38px; height: 38px; border-radius: 50%; border: 2px solid rgba(240, 122, 106, 0.6); display: grid; place-items: center; }
.watch__btn i { width: 14px; height: 14px; border-radius: 4px; background: #f07a6a; }
.watch__screen p { font-size: 0.5625rem; line-height: 1.4; color: var(--color-accent); }
.watch__screen small { font-family: var(--font-mono); font-size: 0.625rem; color: var(--color-text); }
.devices figcaption { text-align: center; font-size: 0.75rem; color: var(--color-text-subtle); }

/* ---------- Sections ---------- */
.section { position: relative; z-index: 1; padding: var(--space-section) var(--gutter); }
.section__inner { width: min(var(--content-max), 100%); margin: 0 auto; }
.section__inner--narrow { width: min(var(--text-max), 100%); }
.section__title { font-family: var(--font-serif); font-size: var(--font-size-h2); font-weight: 500; letter-spacing: 0.02em; }
.section__lead { max-width: 36em; margin-top: var(--space-5); color: var(--color-text-muted); font-size: var(--font-size-lead); }
.section--day { background: linear-gradient(to bottom, transparent, rgba(8, 20, 52, 0.6) 20%, rgba(8, 20, 52, 0.6) 80%, transparent); }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--duration-reveal) var(--ease), transform var(--duration-reveal) var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* Features（糸を織るように、6 本の工程を並べる） */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-7); counter-reset: thread; }
.feature {
  position: relative; padding: var(--space-6) var(--space-5) var(--space-5); border-radius: var(--radius-lg);
  background: var(--color-surface); border: 1px solid var(--color-line);
  backdrop-filter: blur(10px); transition-delay: calc(var(--i, 0) * 70ms);
  counter-increment: thread;
}
.feature::after { content: "0" counter(thread); position: absolute; top: var(--space-5); right: var(--space-5); font-family: var(--font-mono); font-size: var(--font-size-label); letter-spacing: 0.16em; color: var(--color-text-subtle); }
.feature:nth-child(2) { --i: 1; } .feature:nth-child(3) { --i: 2; } .feature:nth-child(4) { --i: 3; } .feature:nth-child(5) { --i: 4; } .feature:nth-child(6) { --i: 5; }
.feature__icon { width: 44px; height: 44px; color: var(--color-cream); margin-bottom: var(--space-4); }
.feature h3 { font-family: var(--font-serif); font-size: var(--font-size-h3); font-weight: 600; letter-spacing: 0.02em; }
.feature p { margin-top: var(--space-3); color: var(--color-text-muted); font-size: var(--font-size-sm); }
@media (max-width: 1000px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .features { grid-template-columns: minmax(0, 1fr); } }

/* Timeline */
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4); margin-top: var(--space-7); position: relative; }
.timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 11px; height: 1px; background: linear-gradient(to right, var(--color-gold), var(--color-cream) 50%, var(--color-accent)); opacity: 0.6; }
.timeline__step { position: relative; padding-top: var(--space-6); }
.timeline__step::before { content: ""; position: absolute; top: 6px; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--color-bg); border: 2px solid var(--color-cream); }
.timeline__step:first-child::before { border-color: var(--color-gold); background: var(--color-gold); }
.timeline__step:nth-child(2) { transition-delay: 80ms; } .timeline__step:nth-child(3) { transition-delay: 160ms; } .timeline__step:nth-child(4) { transition-delay: 240ms; } .timeline__step:nth-child(5) { transition-delay: 320ms; }
.timeline__time { display: block; font-family: var(--font-mono); font-size: var(--font-size-label); letter-spacing: 0.16em; color: var(--color-accent); }
.timeline__step h3 { margin-top: var(--space-2); font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; }
.timeline__step p { margin-top: var(--space-2); color: var(--color-text-muted); font-size: var(--font-size-sm); }
@media (max-width: 900px) {
  .timeline { grid-template-columns: 1fr; gap: 0; padding-left: 1.5rem; }
  .timeline::before { left: 5px; right: auto; top: 10px; bottom: 10px; width: 1px; height: auto; background: linear-gradient(to bottom, var(--color-gold), var(--color-cream) 50%, var(--color-accent)); }
  .timeline__step { padding: 0 0 var(--space-6) 0; }
  .timeline__step::before { left: -1.5rem; top: 8px; }
}

/* AI の選択 */
.engines { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: start; margin-top: var(--space-7); }
.providers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.provider { padding: var(--space-5); border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-line); }
.provider strong { display: block; font-family: var(--font-serif); font-size: 1.375rem; font-weight: 600; letter-spacing: 0.02em; }
.provider span { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--color-text-subtle); }
.engine-notes { display: grid; gap: var(--space-4); }
.engine-notes li { padding-left: var(--space-5); position: relative; color: var(--color-text-muted); font-size: var(--font-size-sm); }
.engine-notes li::before { content: ""; position: absolute; left: 0; top: 0.85em; width: 12px; height: 1px; background: var(--color-gold); }
.engine-notes strong { color: var(--color-text); }
@media (max-width: 900px) { .engines { grid-template-columns: minmax(0, 1fr); } }

/* Promises */
.section--promise::before { content: ""; position: absolute; inset: 0 auto 0 50%; width: 1px; background: linear-gradient(to bottom, transparent, var(--color-line) 30%, var(--color-line) 70%, transparent); opacity: 0.6; }
@media (max-width: 760px) { .section--promise::before { display: none; } }
.promises { display: grid; gap: var(--space-4); margin-top: var(--space-7); }
.promise { padding: var(--space-5) var(--space-5) var(--space-5) var(--space-6); border-left: 2px solid var(--color-gold); background: rgba(8, 20, 52, 0.55); border-radius: 0 var(--radius-md) var(--radius-md) 0; }
.promise dt { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; }
.promise dd { margin-top: var(--space-2); color: var(--color-text-muted); font-size: var(--font-size-sm); }
.text-links { display: flex; flex-wrap: wrap; gap: var(--space-5); margin-top: var(--space-6); font-size: var(--font-size-sm); }
.text-links a, .prose a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 0.3em; text-decoration-color: rgba(145, 222, 214, 0.4); }
.text-links a:hover, .prose a:hover { text-decoration-color: var(--color-accent); }

/* Requirements / Launch */
.spec { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: var(--space-7); border: 1px solid var(--color-line); border-radius: var(--radius-lg); overflow: hidden; background: var(--color-line); }
.spec div { padding: var(--space-5); background: var(--color-surface-strong); }
.spec dt { font-family: var(--font-mono); font-size: var(--font-size-label); letter-spacing: 0.14em; color: var(--color-accent); }
.spec dd { margin-top: var(--space-2); font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; line-height: 1.4; }
.spec dd small { display: block; margin-top: 0.25rem; font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 400; color: var(--color-text-subtle); }
@media (max-width: 900px) { .spec { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .spec { grid-template-columns: minmax(0, 1fr); } }
.launch { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4) var(--space-6); margin-top: var(--space-6); }
.launch p { color: var(--color-text-muted); font-size: var(--font-size-sm); max-width: 32em; }

/* ---------- 文書ページ（プライバシーポリシー・サポート） ---------- */
.doc { position: relative; z-index: 1; padding: calc(var(--header-height) + var(--space-7)) var(--gutter) var(--space-section); }
.doc__inner { width: min(var(--text-max), 100%); margin: 0 auto; }
.doc__title { font-family: var(--font-serif); font-size: var(--font-size-h2); font-weight: 500; letter-spacing: 0.02em; }
.doc__meta { margin-top: var(--space-4); color: var(--color-text-subtle); font-size: var(--font-size-sm); }
.doc__toc { margin-top: var(--space-6); padding: var(--space-5); border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-line); }
.doc__toc p { font-family: var(--font-mono); font-size: var(--font-size-label); letter-spacing: 0.14em; color: var(--color-accent); margin-bottom: var(--space-2); }
.doc__toc ol { display: grid; gap: 0.15rem; counter-reset: toc; }
.doc__toc li { counter-increment: toc; font-size: var(--font-size-sm); }
.doc__toc li::before { content: counter(toc) ". "; color: var(--color-text-subtle); font-family: var(--font-mono); }
.doc__toc a { color: var(--color-text-muted); }
.doc__toc a:hover { color: var(--color-text); }
.prose { margin-top: var(--space-7); }
.prose section + section { margin-top: var(--space-7); padding-top: var(--space-6); border-top: 1px solid var(--color-line); }
.prose h2 { font-family: var(--font-serif); font-size: var(--font-size-h3); font-weight: 600; letter-spacing: 0.02em; }
.prose h3 { margin-top: var(--space-5); font-size: 1.0625rem; font-weight: 700; }
.prose p, .prose ul, .prose ol, .prose dl, .prose .table-wrap { margin-top: var(--space-4); color: var(--color-text-muted); font-size: var(--font-size-sm); }
.prose ul > li, .prose ol > li { position: relative; padding-left: 1.25rem; }
.prose ul > li + li, .prose ol > li + li { margin-top: 0.35rem; }
.prose ul > li::before { content: ""; position: absolute; left: 0; top: 0.85em; width: 8px; height: 1px; background: var(--color-gold); }
.prose ol { counter-reset: item; }
.prose ol > li { counter-increment: item; padding-left: 1.75rem; }
.prose ol > li::before { content: counter(item) "."; position: absolute; left: 0; font-family: var(--font-mono); color: var(--color-gold); }
.prose strong { color: var(--color-text); }
.prose code { font-family: var(--font-mono); font-size: 0.875em; }
.data-list { display: grid; gap: var(--space-3); }
.data-list > div { padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-line); }
.data-list dt { color: var(--color-text); font-weight: 700; }
.data-list dd { margin-top: 0.35rem; }
.data-list dd + dd { margin-top: 0.25rem; }
.data-list dd b { display: inline-block; min-width: 4.5em; margin-right: 0.5em; font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; color: var(--color-accent); }

.contact-card { margin-top: var(--space-5); padding: var(--space-5) var(--space-6); border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-line-strong); display: grid; gap: var(--space-3); }
.contact-card__mail { font-family: var(--font-mono); font-size: clamp(1.0625rem, 0.9rem + 0.8vw, 1.375rem); color: var(--color-cream); overflow-wrap: anywhere; }
.contact-card__mail a { border-bottom: 1px solid var(--color-line-strong); }
.contact-card__mail a:hover { border-color: var(--color-cream); }
.contact-card p { color: var(--color-text-muted); font-size: var(--font-size-sm); }

.faq { margin-top: var(--space-5); display: grid; gap: var(--space-3); }
.faq details { border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-line); transition: border-color var(--duration-fast); }
.faq details[open] { border-color: var(--color-line-strong); }
.faq summary { position: relative; list-style: none; cursor: pointer; padding: var(--space-4) 3rem var(--space-4) var(--space-5); min-height: 52px; color: var(--color-text); font-weight: 700; font-size: var(--font-size-sm); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: var(--space-5); top: 50%; width: 9px; height: 9px; border-right: 1.5px solid var(--color-gold); border-bottom: 1.5px solid var(--color-gold); transform: translateY(-70%) rotate(45deg); transition: transform var(--duration-fast); }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq details > div { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-muted); font-size: var(--font-size-sm); }
.faq details > div p + p, .faq details > div p + ul, .faq details > div ul + p { margin-top: var(--space-3); }

/* 404 */
.notfound { min-height: 70svh; display: grid; place-items: center; text-align: center; }
.notfound p { margin-top: var(--space-4); color: var(--color-text-muted); }
.notfound .text-links { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { position: relative; z-index: 1; padding: var(--space-8) var(--gutter) var(--space-7); border-top: 1px solid var(--color-line); background: rgba(0, 0, 0, 0.5); }
.site-footer__inner { width: min(var(--content-max), 100%); margin: 0 auto; display: grid; gap: var(--space-6); }
.site-footer__brand { display: flex; align-items: center; gap: var(--space-4); }
.site-footer__brand img { border-radius: 10px; }
.site-footer__name { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; letter-spacing: 0.06em; }
.site-footer__name small { font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.2em; color: var(--color-text-subtle); margin-left: 0.5rem; }
.site-footer__by { font-size: var(--font-size-sm); color: var(--color-text-subtle); }
.site-footer__by a { color: var(--color-accent); font-weight: 700; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5); }
.site-footer__links a { display: inline-flex; align-items: center; min-height: 44px; font-size: var(--font-size-sm); color: var(--color-text-muted); border-bottom: 1px solid transparent; transition: color var(--duration-fast), border-color var(--duration-fast); }
.site-footer__links a:hover { color: var(--color-text); border-color: var(--color-line-strong); }
.site-footer__meta { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); font-size: 0.8125rem; color: var(--color-text-subtle); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--space-6)); }
  .hero__inner { grid-template-columns: 1fr; }
  .devices { margin-top: var(--space-4); }
  .watch { left: auto; right: -40px; bottom: auto; top: 64px; width: 92px; }
  .hero__scroll { display: none; }
}
@media (max-width: 480px) {
  .hero__actions > * { width: 100%; }
  .store-badge { justify-content: flex-start; }
  .phone__frame { width: min(272px, 74vw); }
  .watch { right: -34px; top: 60px; width: 80px; padding: 6px; border-radius: 24px; }
  .watch__screen { border-radius: 18px; }
  .hero__icon { width: 60px; height: 60px; border-radius: 14px; }
  .contact-card { padding: var(--space-5); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__title .heading-line, .hero__lead, .hero__actions, .hero__facts, .devices { opacity: 1; transform: none; animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .dot, .phone__wave b, .hero__scroll span { animation: none; }
  .phone__wave b { height: 55%; }
}
.launch a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 0.3em; text-decoration-color: rgba(145, 222, 214, 0.4); }