/* ---------------------------------------------------------------------------
   daylo LP — 静けさ / 墨色 × 月白 × 青磁
   --------------------------------------------------------------------------- */

:root {
  --bg: #0a0d12;
  --surface: #12161f;
  --surface-2: #171c27;
  --hairline: rgba(233, 236, 242, 0.08);
  --ink: #e9ecf2;
  --ink-dim: #a6afbf;
  --ink-faint: #78829399;
  --ink-faint-solid: #788293;
  --celadon: #7fd4bc;
  --celadon-soft: rgba(127, 212, 188, 0.35);
  --font-display: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body:
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 720px;
  background: radial-gradient(
    ellipse 55% 42% at 50% -6%,
    rgba(127, 212, 188, 0.07),
    transparent 70%
  );
  pointer-events: none;
}

.container {
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--celadon-soft);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---- header ------------------------------------------------------------- */

.site-header {
  position: relative;
  z-index: 5;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 28px;
}

.logotype {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-dim);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--ink);
}

/* ---- hero ---------------------------------------------------------------- */

.hero {
  position: relative;
}

.hero-inner {
  padding-top: 108px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(42px, 6.4vw, 84px);
  line-height: 1.32;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.hero-title span {
  display: block;
}

.hero-sub {
  margin-top: 36px;
  font-size: 16px;
  color: var(--ink-dim);
  line-height: 2.1;
  max-width: 42em;
  margin-inline: auto;
}

.hero-cta {
  margin-top: 44px;
}

.btn-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  padding: 14px 36px;
  border-radius: 999px;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.btn-primary:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

.hero-note {
  margin-top: 26px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink-faint-solid);
}

.hero-note .sep {
  margin-inline: 0.9em;
  opacity: 0.5;
}

/* ---- trend line (signature) ---------------------------------------------- */

.trend {
  position: relative;
  margin-top: -8px;
  height: clamp(180px, 20.8vw, 300px);
}

.trend svg {
  display: block;
  width: 100%;
  height: 100%;
}

.trend-line {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw 1.6s cubic-bezier(0.6, 0, 0.2, 1) 0.45s forwards;
}

@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.trend-dots {
  opacity: 0;
  animation: fadein 0.8s ease 1.4s forwards;
}

.trend-latest {
  position: absolute;
  left: 95.1%;
  top: 54.3%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadein 0.8s ease 1.7s forwards;
}

.trend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--celadon);
  box-shadow:
    0 0 0 6px rgba(127, 212, 188, 0.14),
    0 0 18px rgba(127, 212, 188, 0.55);
}

.trend-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--celadon);
  white-space: nowrap;
  transform: translateY(-44px);
  order: -1;
}

@keyframes fadein {
  to {
    opacity: 1;
  }
}

/* ---- chat visual ---------------------------------------------------------- */

.chat-wrap {
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 2;
  margin-top: -56px;
}

.chat-visual {
  width: min(920px, 100%);
  margin: 0;
}

.chat-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22px;
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.42),
    0 0 120px rgba(127, 212, 188, 0.04);
}

/* ---- features -------------------------------------------------------------- */

.features {
  margin-top: 140px;
  border-top: 1px solid var(--hairline);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-block: 104px;
}

.feature {
  padding-inline: 40px;
}

.feature:first-child {
  padding-left: 0;
}

.feature:last-child {
  padding-right: 0;
}

.feature + .feature {
  border-left: 1px solid var(--hairline);
}

.feature-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 23px;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.feature-body {
  margin-top: 18px;
  font-size: 14.5px;
  line-height: 2.1;
  color: var(--ink-dim);
}

/* ---- closing ---------------------------------------------------------------- */

.closing {
  border-top: 1px solid var(--hairline);
}

.closing-inner {
  padding-block: 170px;
  text-align: center;
}

.closing-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 3.6vw, 46px);
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.closing .btn-primary {
  margin-top: 40px;
}

/* ---- footer ------------------------------------------------------------------ */

.site-footer {
  border-top: 1px solid var(--hairline);
}

.footer-grid {
  padding-block: 52px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: start;
}

.company {
  font-style: normal;
  font-size: 12.5px;
  line-height: 2;
  color: var(--ink-faint-solid);
  display: flex;
  flex-direction: column;
}

.company strong {
  color: var(--ink-dim);
  font-weight: 600;
}

.company a {
  color: var(--ink-faint-solid);
  width: fit-content;
}

.company a:hover {
  color: var(--ink);
}

.footer-links {
  display: flex;
  gap: 28px;
  font-size: 13px;
  color: var(--ink-dim);
}

.footer-links a:hover {
  color: var(--ink);
}

.copyright {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink-faint-solid);
}

/* ---- motion ---------------------------------------------------------------------- */

.rise {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.9s cubic-bezier(0.2, 0.6, 0.2, 1) var(--d, 0s) forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.8s cubic-bezier(0.2, 0.6, 0.2, 1) var(--d, 0s),
    transform 0.8s cubic-bezier(0.2, 0.6, 0.2, 1) var(--d, 0s);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .rise,
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }

  .trend-line {
    animation: none;
    stroke-dashoffset: 0;
  }

  .trend-dots,
  .trend-latest {
    animation: none;
    opacity: 1;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ---- responsive -------------------------------------------------------------------- */

.sp-only {
  display: none;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr;
    padding-block: 72px;
    gap: 56px;
  }

  .feature {
    padding-inline: 0;
  }

  .feature + .feature {
    border-left: none;
    padding-top: 56px;
    border-top: 1px solid var(--hairline);
  }
}

@media (max-width: 640px) {
  .pc-only {
    display: none;
  }

  .hero-inner {
    padding-top: 72px;
  }

  .hero-sub {
    margin-top: 28px;
    font-size: 14.5px;
    text-align: left;
  }

  .hero-note {
    font-size: 11px;
    letter-spacing: 0.03em;
  }

  .hero-note .sep {
    margin-inline: 0.5em;
  }

  .trend {
    margin-top: 16px;
  }

  .trend-label {
    font-size: 11px;
    transform: translate(-30px, -38px);
  }

  .trend-latest {
    left: calc(100% - 28px);
  }

  .sp-only {
    display: inline;
  }

  .chat-wrap {
    margin-top: -24px;
    padding-inline: 12px;
  }

  .chat-image {
    border-radius: 14px;
  }

  .features {
    margin-top: 88px;
  }

  .closing-inner {
    padding-block: 110px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ---- legal pages ---------------------------------------------------------- */

.legal {
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(48px, 8vw, 80px) 24px 80px;
  font-family: "IBM Plex Sans", var(--font-body);
}

.legal .legal-head {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}

.legal h1 {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.legal .legal-meta {
  color: var(--ink-faint-solid);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
}

.legal .legal-lead {
  margin-top: 20px;
  color: var(--ink-dim);
}

.legal h2 {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  color: var(--celadon);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.6;
}

.legal h2 .no {
  margin-right: 10px;
  color: var(--ink-faint-solid);
  font-weight: 400;
}

.legal h3 {
  margin: 28px 0 8px;
  font-size: 16px;
}

.legal p,
.legal ul {
  margin-block: 14px;
}

.legal ul {
  padding-left: 24px;
}

.legal li {
  margin-block: 6px;
}

.legal a {
  color: var(--celadon);
  text-decoration: underline;
  text-decoration-color: var(--celadon-soft);
  text-underline-offset: 3px;
}

.legal a:hover {
  text-decoration-color: var(--celadon);
}

.legal code {
  padding: 2px 6px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.legal-back {
  display: inline-block;
  margin-top: 56px;
  font-family: var(--font-mono);
  font-size: 13px;
}