/* KAIJING · design file */

.preview-body {
  background:
    radial-gradient(1100px 700px at 82% -8%, rgba(240, 208, 186, 0.35), transparent 62%),
    var(--paper);
  color: var(--ink);
}

.preview-body .grain::after {
  opacity: 0.024;
}

section[id] {
  scroll-margin-top: 100px;
}

.p-links a.is-active {
  color: var(--accent-deep);
}

.p-links a.is-active::after {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin-left: 6px;
  border-radius: 50%;
  background: currentColor;
  vertical-align: 2px;
}

.p-wrap {
  width: min(1280px, calc(100% - 72px));
  margin-inline: auto;
}

.p-nav {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 80;
  width: min(1280px, calc(100% - 40px));
  transform: translateX(-50%);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.p-nav.is-scrolled {
  background: rgba(255, 253, 248, 0.8);
  border-color: var(--line);
  box-shadow: 0 18px 50px -38px rgba(51, 39, 26, 0.4);
  backdrop-filter: blur(18px);
}

.p-nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 62px;
  padding: 0 10px 0 16px;
}

.p-links {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: 12px;
}

.p-links a {
  font-size: 12.5px;
  color: var(--ink-3);
  white-space: nowrap;
  transition: color 0.25s var(--ease);
}

.p-links a:hover { color: var(--accent-deep); }

.p-nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.p-nav-actions .btn { min-height: 40px; }

/* ---------------------------------- hero ---------------------------------- */
.p-hero {
  position: relative;
  padding: 148px 0 28px;
  overflow: clip;
}

.p-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(36px, 5vw, 76px);
  align-items: center;
}

.p-kicker {
  color: var(--ink-4);
  font-size: 9.5px;
  letter-spacing: 0.15em;
}

.p-display {
  margin-top: 22px;
  font-size: clamp(3.8rem, 7vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  font-weight: 540;
  overflow-wrap: anywhere;
}

.p-display em {
  font-style: normal;
  color: var(--accent-deep);
}

.p-lead {
  max-width: 520px;
  margin-top: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.p-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.p-hero-actions .btn { min-height: 54px; }

.p-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  max-width: 520px;
  margin: 38px 0 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--line);
}

.p-meta > div {
  padding: 12px 14px;
  background: rgba(255, 253, 248, 0.55);
}

.p-meta dt {
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.p-meta dd {
  margin: 4px 0 0;
  font-size: 11.5px;
  font-weight: 550;
  color: var(--ink-2);
}

.p-hero-visual {
  position: relative;
  min-width: 0;
}

.browser {
  display: block;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  background: var(--surface);
  box-shadow:
    0 0 0 7px rgba(255, 253, 248, 0.22),
    0 45px 100px -55px rgba(60, 44, 30, 0.6);
  transition: transform 0.6s var(--spring), box-shadow 0.6s var(--ease);
}

.browser:hover {
  transform: translateY(-3px);
  box-shadow:
    0 0 0 7px rgba(255, 253, 248, 0.3),
    0 55px 110px -55px rgba(60, 44, 30, 0.65);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 32px;
  padding: 0 11px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 7.5px;
  color: var(--ink-4);
  white-space: nowrap;
}

.browser-bar > span:nth-child(2) {
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-bar .tag {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: 7px;
  padding: 2px 6px;
}

.browser-dots {
  display: flex;
  gap: 4px;
  flex: 0 0 auto;
}

.browser-dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(27, 28, 24, 0.14);
}

.browser-dots i:first-child { background: rgba(188, 76, 44, 0.55); }
.browser-dots i:nth-child(2) { background: rgba(233, 205, 150, 0.9); }
.browser-dots i:nth-child(3) { background: rgba(141, 164, 143, 0.75); }

.browser img {
  width: 100%;
  height: auto;
  display: block;
}

.browser-hero {
  transform: rotate(-1.2deg);
}

.p-float-card {
  position: absolute;
  left: -28px;
  bottom: -24px;
  width: 212px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(255, 253, 248, 0.9);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
  transform: rotate(-3deg);
}

.p-float-card .mono {
  font-size: 8px;
  color: var(--ink-4);
}

.p-float-card p {
  margin-top: 7px;
  font-size: 15px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.p-float-note {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--accent-deep);
}

.p-float-swatch {
  position: absolute;
  right: -22px;
  top: -24px;
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff8f2;
  box-shadow: 0 18px 35px -20px rgba(188, 76, 44, 0.8);
  transform: rotate(8deg);
}

.p-float-swatch span {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.04em;
}

.p-hero-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 68px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.p-mini-link {
  color: var(--accent-deep);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}

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

/* -------------------------------- sections -------------------------------- */
.p-section {
  padding: clamp(90px, 10vw, 140px) 0;
}

.p-section-tint {
  background: linear-gradient(180deg, transparent, rgba(236, 230, 218, 0.55) 12%, rgba(236, 230, 218, 0.55) 88%, transparent);
}

.p-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.p-h2 {
  margin-top: 16px;
  font-size: clamp(2.3rem, 4.3vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  font-weight: 550;
  text-wrap: balance;
}

.p-h3 {
  margin-top: 14px;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
  font-weight: 550;
}

.p-section-note {
  max-width: 360px;
  padding-bottom: 5px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

/* ------------------------------- principles ------------------------------- */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
}

.principle {
  position: relative;
  padding: 30px 30px 0;
  border-left: 1px solid var(--line);
  min-height: 360px;
}

.principle:first-child {
  border-left: 0;
  padding-left: 0;
}

.principle-word {
  display: block;
  margin-bottom: 18px;
  font-size: clamp(4rem, 6.4vw, 6.3rem);
  line-height: 1;
  letter-spacing: -0.07em;
  font-weight: 280;
  color: var(--ink);
}

.principle .mono {
  font-size: 8px;
  color: var(--accent-deep);
}

.principle h3 {
  margin-top: 12px;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: -0.03em;
  font-weight: 560;
}

.principle p {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-3);
  max-width: 320px;
}

.principle-sample {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  min-height: 52px;
}

.sample-orb {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 26%, #fbe3d3, #e9a483 55%, #b9633f);
  box-shadow: 0 12px 20px -14px rgba(80, 45, 30, 0.6);
}

.sample-pill {
  width: 92px;
  height: 26px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.sample-line {
  display: block;
  width: 90px;
  height: 6px;
  border-radius: 999px;
  background: var(--paper-3);
}

.sample-line.short { width: 56px; }

.sample-type {
  font-size: 44px;
  line-height: 1;
  font-weight: 300;
  letter-spacing: -0.06em;
}

.sample-check {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--sage-soft);
  color: var(--sage-deep);
  font-size: 16px;
}

/* --------------------------------- color --------------------------------- */
.color-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 18px;
  align-items: stretch;
}

.palette {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.swatch {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 160px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(27, 28, 24, 0.04);
}

.swatch span { font-size: 11px; font-weight: 550; }
.swatch b {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
}
.swatch small { margin-top: 6px; font-size: 8.5px; opacity: 0.65; }

.swatch-paper { background: #f5f2ea; color: #1b1c18; }
.swatch-surface { background: #fffdf8; color: #1b1c18; }
.swatch-ink { background: #1b1c18; color: #fffdf8; }
.swatch-accent { background: #bc4c2c; color: #fff8f2; }
.swatch-sage { background: #8da48f; color: #fffdf8; }
.swatch-butter { background: #e9cd96; color: #3f321c; }

.material {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.material-art {
  overflow: hidden;
  aspect-ratio: 16 / 8.6;
  background: var(--paper);
}

.material-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.01);
}

.material-copy { padding: 22px; }

.material-copy h3 {
  margin-top: 8px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -0.03em;
  font-weight: 560;
}

.material-copy p {
  margin-top: 9px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--ink-3);
}

.material-copy code {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-deep);
}

.material-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 14px;
}

.material-specs span {
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: 7.5px;
  color: var(--ink-4);
}

.ramp {
  display: flex;
  margin-top: 14px;
  border-radius: 12px;
  overflow: hidden;
}

.ramp span {
  flex: 1;
  min-height: 64px;
  padding: 9px;
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: 0.04em;
}

/* --------------------------------- type ---------------------------------- */
.type-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(40px, 7vw, 100px);
  align-items: start;
}

.type-specimen .p-kicker { margin-bottom: 28px; }

.specimen-display {
  font-size: clamp(3.2rem, 6.2vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 540;
}

.specimen-sub {
  max-width: 520px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.specimen-note {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: var(--ink-4);
  letter-spacing: 0.06em;
}

.type-table {
  border-top: 1px solid var(--line-strong);
}

.type-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.type-row span {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--ink-4);
  letter-spacing: 0.05em;
}

.type-row b {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-2);
}

.type-row small {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--ink-4);
  white-space: nowrap;
}

.type-foot {
  margin-top: 18px;
  font-size: 11px;
  line-height: 1.8;
  color: var(--ink-3);
}

/* ------------------------------- components ------------------------------- */
.component-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.spec-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.spec-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.spec-head .mono {
  font-size: 8px;
  color: var(--ink-4);
}

.spec-body {
  padding: 18px 0 14px;
}

.spec-note {
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 10px;
  line-height: 1.65;
  color: var(--ink-4);
}

.button-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
}

.tag-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
}

.radio-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.feedback-showcase {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feedback-showcase .toast {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  font-size: 10.5px;
  line-height: 1.6;
}

.feedback-showcase .toast .icon { color: var(--sage-deep); width: 15px; height: 15px; margin-top: 1px; }

.ring-demo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ring-demo .ring b { font-size: 19px; }
.ring-demo > div b { display: block; font-size: 11px; font-weight: 600; }
.ring-demo > div p { margin-top: 2px; font-size: 9px; color: var(--ink-4); }

.motion-showcase { display: flex; flex-direction: column; gap: 9px; }

.motion-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 4px 0;
}

.motion-row .run-step-icon { flex: 0 0 auto; }
.motion-row b { display: block; font-size: 10.5px; font-weight: 550; }
.motion-row p { margin-top: 2px; font-size: 8.5px; color: var(--ink-4); }
.motion-row > .mono { margin-left: auto; color: var(--ink-4); font-size: 8px; }

.spec-form .field + .field { margin-top: 12px; }

/* -------------------------------- imagery -------------------------------- */
.art-wall {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 12px;
}

.art-item {
  grid-column: span 3;
  position: relative;
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}

.art-item.art-wide { grid-column: span 6; }

.art-item img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.9s var(--spring);
}

.art-item.art-wide img { aspect-ratio: 16 / 7.8; }

.art-item:hover img { transform: scale(1.03); }

.art-item figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
}

.art-item figcaption span {
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.art-item figcaption b {
  font-size: 9.5px;
  font-weight: 500;
  color: var(--ink-2);
  text-align: right;
}

/* --------------------------------- screens -------------------------------- */
.p-section-ink {
  background:
    radial-gradient(900px 600px at 88% 0%, rgba(188, 76, 44, 0.18), transparent 62%),
    var(--ink);
  color: var(--surface);
}

.p-section-ink .p-kicker { color: rgba(255, 253, 248, 0.42); }
.p-section-ink .p-h2 { color: #faf5eb; }
.p-section-ink .p-section-note { color: rgba(255, 253, 248, 0.55); }

.screen-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 18px;
}

.screen-card { margin: 0; }
.screen-card.screen-wide { grid-column: span 2; }

.screen-card .browser {
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 40px 80px -50px rgba(0, 0, 0, 0.8);
}

.screen-card .browser-bar {
  background: #f4efe4;
}

.screen-card .browser img {
  aspect-ratio: 1.44;
  object-fit: cover;
  object-position: top;
}

.screen-card.screen-wide .browser img { aspect-ratio: 2.1; }

.screen-card figcaption {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 16px;
  padding: 14px 2px 0;
}

.screen-card figcaption .mono {
  font-size: 7.5px;
  color: rgba(255, 253, 248, 0.38);
}

.screen-card figcaption b {
  grid-row: span 2;
  font-size: 16px;
  font-weight: 550;
  letter-spacing: -0.02em;
  color: #f8f3e9;
}

.screen-card figcaption p {
  font-size: 9.5px;
  color: rgba(255, 253, 248, 0.45);
}

.screen-card .browser:hover {
  box-shadow: 0 50px 100px -50px rgba(0, 0, 0, 0.9);
}

.mobile-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin: 90px 0 28px;
  padding-top: 34px;
  border-top: 1px solid rgba(255, 253, 248, 0.12);
}

.mobile-head > p {
  max-width: 320px;
  font-size: 11px;
  line-height: 1.8;
  color: rgba(255, 253, 248, 0.45);
}

.phone-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.phone-card {
  margin: 0;
  text-align: center;
}

.phone-shell {
  width: min(100%, 250px);
  margin: 0 auto;
  padding: 7px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 32px;
  background: #2a2b26;
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 0.8);
}

.phone-screen {
  overflow: hidden;
  border-radius: 25px;
  background: var(--paper);
}

.phone-screen img { width: 100%; display: block; }

.phone-card figcaption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-top: 13px;
}

.phone-card figcaption .mono {
  font-size: 7px;
  color: rgba(255, 253, 248, 0.35);
}

.phone-card figcaption b {
  font-size: 10.5px;
  font-weight: 500;
  color: rgba(255, 253, 248, 0.8);
}

.screen-note {
  margin-top: 28px;
  font-size: 9px;
  color: rgba(255, 253, 248, 0.32);
}

/* --------------------------------- details -------------------------------- */
.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 70px;
  align-items: start;
}

.detail-list { border-top: 1px solid var(--line-strong); }

.detail-row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.detail-row > .mono { color: var(--ink-4); padding-top: 3px; }
.detail-row b { font-size: 15px; font-weight: 560; letter-spacing: -0.02em; }
.detail-row p { margin-top: 5px; font-size: 11.5px; line-height: 1.8; color: var(--ink-3); max-width: 560px; }

/* ----------------------------------- cta ---------------------------------- */
.p-cta {
  padding: clamp(70px, 8vw, 110px) 0;
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
}

.p-cta-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
}

.p-cta-inner .p-h2 { margin-top: 14px; }
.p-cta-inner > div > p:last-child { max-width: 440px; margin-top: 14px; font-size: 13px; line-height: 1.8; color: var(--ink-3); }

.p-cta-actions { display: flex; gap: 9px; flex-wrap: wrap; flex: 0 0 auto; }
.p-cta-actions .btn { min-height: 52px; }

.p-footer {
  padding: 60px 0 26px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.p-footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) repeat(3, minmax(0, 0.75fr));
  gap: 36px;
}

.p-footer-grid .brand { margin-bottom: 14px; }
.p-footer-grid > div > p { font-size: 11.5px; line-height: 1.8; color: var(--ink-3); }
.p-footer-grid > div > span.mono { display: block; margin-bottom: 10px; font-size: 7.5px; color: var(--ink-4); }
.p-footer-grid > div > a:not(.brand),
.p-footer-grid > div > span:not(.mono) {
  display: block;
  margin-top: 7px;
  font-size: 10.5px;
  color: var(--ink-3);
}
.p-footer-grid > div > a:hover { color: var(--accent-deep); }

/* -------------------------------- responsive ------------------------------- */
@media (max-width: 1080px) {
  .p-links { gap: 16px; margin-left: 0; }
  .p-display { font-size: clamp(3.4rem, 7vw, 5rem); }
  .component-grid { grid-template-columns: 1fr; }
  .art-item { grid-column: span 4; }
  .art-item.art-wide { grid-column: span 8; }
  .color-layout { grid-template-columns: 1fr; }
  .palette { grid-template-columns: repeat(3, 1fr); }
  .screen-card figcaption b { font-size: 14px; }
}

@media (max-width: 900px) {
  .p-links { display: none; }
  .p-nav-actions .btn-ghost { display: none; }
  .p-hero { padding-top: 116px; }
  .p-hero-grid { grid-template-columns: 1fr; gap: 54px; }
  .p-hero-visual { max-width: 700px; width: 100%; margin-inline: auto; }
  .p-display { font-size: clamp(3.2rem, 11vw, 5.4rem); }
  .p-section-head { flex-direction: column; align-items: flex-start; gap: 22px; }
  .p-section-note { max-width: 520px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle { border-left: 0; padding: 24px 0 0; border-top: 1px solid var(--line); min-height: 0; }
  .principle:first-child { border-top: 0; }
  .principle-word { font-size: 3.8rem; }
  .type-layout { grid-template-columns: 1fr; gap: 44px; }
  .screen-grid { grid-template-columns: 1fr; }
  .screen-card.screen-wide { grid-column: span 1; }
  .screen-card.screen-wide .browser img { aspect-ratio: 1.44; }
  .mobile-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .p-cta-inner { flex-direction: column; align-items: flex-start; }
  .p-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .p-wrap { width: calc(100% - 40px); }
  .p-nav { width: calc(100% - 24px); top: 10px; }
  .p-nav-inner { height: 56px; padding-left: 10px; }
  .p-nav-actions .btn { min-height: 36px; font-size: 11px; padding-left: 13px; }
  .p-nav-actions .btn .btn-arrow { width: 24px; height: 24px; }
  .brand-en { display: none; }
  .p-hero { padding-top: 100px; }
  .p-hero-foot { flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 50px; }
  .p-meta { grid-template-columns: 1fr 1fr; }
  .p-float-card { left: 10px; bottom: -18px; width: 180px; }
  .p-float-swatch { width: 60px; height: 60px; right: -8px; top: -16px; }
  .palette { grid-template-columns: 1fr 1fr; }
  .swatch { min-height: 132px; }
  .art-wall { gap: 8px; }
  .art-item, .art-item.art-wide { grid-column: span 6; }
  .art-item.art-wide img { aspect-ratio: 4 / 3; }
  .phone-row { display: flex; overflow-x: auto; gap: 14px; padding-bottom: 10px; scroll-snap-type: x mandatory; }
  .phone-card { flex: 0 0 72%; scroll-snap-align: center; }
  .p-footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .p-cta-actions .btn { width: 100%; justify-content: space-between; }
  .specimen-display { font-size: clamp(2.6rem, 10vw, 4rem); }
  .type-row { grid-template-columns: 78px minmax(0, 1fr); }
  .type-row small { display: none; }
  .component-grid { gap: 10px; }
  .spec-card { padding: 16px; }
  .radio-showcase { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .p-display { font-size: clamp(2.8rem, 13vw, 3.7rem); }
  .p-nav-actions .btn-ghost { display: none; }
  .p-float-swatch { display: none; }
  .p-float-card { width: 166px; }
  .swatch { min-height: 118px; }
  .swatch small { display: none; }
  .ramp { flex-wrap: wrap; }
  .ramp span { flex: 1 0 33.333%; min-height: 46px; }
  .art-item, .art-item.art-wide { grid-column: span 12; }
  .p-footer-grid { grid-template-columns: 1fr; }
  .p-section { padding: 74px 0; }
}