.page-products {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- Hero ---------- */
.page-products .ph-hero {
  position: relative;
  padding-top: clamp(16px, 3vw, 32px);
  padding-bottom: clamp(36px, 6vw, 72px);
  overflow: hidden;
}
.page-products .ph-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 66%;
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(214, 167, 86, 0.26), transparent 62%),
    linear-gradient(180deg, var(--paper-2), var(--paper));
}
.page-products .ph-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}
.page-products h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 9vw, 86px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 10px 0 18px;
}
.page-products h1 span {
  color: var(--walnut);
}
.page-products .ph-hero-copy .lede {
  max-width: 46ch;
}
.page-products .ph-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .ph-ticket {
  position: relative;
  background: linear-gradient(160deg, var(--walnut), var(--walnut-deep) 70%);
  color: var(--paper);
  padding: 22px 22px 24px;
  box-shadow: inset 3px 0 0 var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}
.page-products .ph-ticket-label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-soft);
}
.page-products .ph-ticket-num {
  margin: 4px 0 16px;
  font-size: clamp(40px, 8vw, 60px);
  line-height: 1;
  color: var(--gold);
  font-weight: 700;
}
.page-products .ph-ticket-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14px;
  color: rgba(247, 243, 236, 0.86);
}
.page-products .ph-ticket-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(247, 243, 236, 0.14);
}
.page-products .ph-ticket-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-products .ph-ticket-list .mono {
  color: var(--gold);
  font-size: 15px;
  min-width: 2.2em;
}

/* ---------- Capability band ---------- */
.page-products .ph-band {
  position: relative;
  z-index: 1;
  margin-top: clamp(26px, 4vw, 44px);
  background: linear-gradient(120deg, var(--walnut-deep), var(--walnut-ink));
  color: var(--paper);
  padding: clamp(22px, 3vw, 34px);
  box-shadow: inset 0 3px 0 var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}
.page-products .ph-band-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  margin: 0 0 20px;
  color: var(--gold-soft);
}
.page-products .ph-band-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  -webkit-overflow-scrolling: touch;
}
.page-products .ph-band-card {
  flex: 0 0 min(238px, 76vw);
  scroll-snap-align: start;
  padding: 16px 16px 18px;
  background: rgba(247, 243, 236, 0.06);
  border-top: 2px solid var(--gold);
}
.page-products .ph-band-num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.page-products .ph-band-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  margin: 8px 0 8px;
  color: var(--paper);
}
.page-products .ph-band-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 243, 236, 0.74);
}

/* ---------- Section head ---------- */
.page-products .ph-head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.5vw, 36px);
}
.page-products .ph-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
  margin: 8px 0 14px;
}
.page-products .ph-head--light h2 {
  color: var(--gold-soft);
}
.page-products .ph-head--light .lede {
  color: rgba(247, 243, 236, 0.78);
}

/* ---------- Flow ---------- */
.page-products .ph-flow {
  display: grid;
  gap: 12px;
}
.page-products .ph-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  padding: 16px 18px 16px 16px;
}
.page-products .ph-step summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.3;
}
.page-products .ph-step summary::-webkit-details-marker {
  display: none;
}
.page-products .ph-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--walnut);
  transition: transform 0.2s ease;
}
.page-products .ph-step[open] summary::after {
  content: "−";
}
.page-products .ph-step summary .mono {
  color: var(--amber);
  font-size: 13px;
}
.page-products .ph-step p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-products .ph-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}
.page-products .ph-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--paper-2);
  border: 1px solid var(--line);
}
.page-products .ph-figure--flow img {
  aspect-ratio: 5 / 4;
}
.page-products .ph-figure--rooms img {
  aspect-ratio: 10 / 7;
}
.page-products .ph-figure--scene img {
  aspect-ratio: 16 / 9;
}
.page-products .media-caption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- Rooms ---------- */
.page-products .ph-rooms {
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line);
}
.page-products .ph-rooms-intro {
  max-width: 60ch;
}
.page-products .ph-rooms-intro h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.16;
  margin: 6px 0 12px;
}
.page-products .ph-rooms-intro > p {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 10px;
}
.page-products .filter-btn {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background 0.18s ease, color 0.18s ease;
}
.page-products .filter-btn:hover {
  border-color: var(--gold);
}
.page-products .filter-btn.is-active {
  background: var(--gold);
  color: var(--walnut-ink);
  font-weight: 700;
}
.page-products .filter-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-products .ph-room-grid {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.page-products .ph-room[hidden] {
  display: none;
}
.page-products .ph-room {
  position: relative;
  padding: 14px 16px 16px;
  background: #fff;
  border: 1px solid var(--line);
}
.page-products .ph-room-num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber);
}
.page-products .ph-room h4 {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
}
.page-products .ph-room p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- Adapt ---------- */
.page-products .ph-adapt {
  background: linear-gradient(180deg, rgba(169, 195, 214, 0.34), rgba(169, 195, 214, 0.08));
}
.page-products .ph-device-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: clamp(24px, 3.5vw, 36px);
}
.page-products .ph-device {
  background: #fff;
  border: 1px solid rgba(46, 111, 142, 0.24);
  padding: 12px 12px 14px;
  color: var(--tianshan);
  text-align: center;
}
.page-products .ph-device svg {
  width: 100%;
  max-width: 110px;
  height: auto;
  display: block;
  margin: 0 auto 6px;
}
.page-products .ph-device-name {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}
.page-products .ph-device-meta {
  margin: 2px 0 0;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-products .ph-adapt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
}
.page-products .ph-meter-wrap {
  margin-bottom: 14px;
}
.page-products .checklist-meter {
  height: 6px;
  background: rgba(30, 26, 23, 0.12);
  overflow: hidden;
}
.page-products .checklist-meter-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--pine);
  transition: width 0.28s ease;
}
.page-products .checklist-meter-count {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}
.page-products .checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.page-products .checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 11px 13px;
  font-size: 13.5px;
  line-height: 1.55;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
}
.page-products .checklist-item input {
  margin: 2px 0 0;
  accent-color: var(--pine);
  flex: 0 0 auto;
}
.page-products .ph-check-num {
  color: var(--tianshan);
  font-size: 11.5px;
  flex: 0 0 auto;
}
.page-products .checklist-item:has(input:checked) {
  background: rgba(110, 139, 116, 0.12);
  border-color: rgba(110, 139, 116, 0.5);
}
.page-products .checklist-item.is-done {
  background: rgba(110, 139, 116, 0.12);
  border-color: rgba(110, 139, 116, 0.5);
}

.page-products .ph-adapt-side {
  display: grid;
  gap: 18px;
  align-content: start;
}
.page-products .ph-adapt-side .ph-figure {
  margin: 0;
}
.page-products .ph-adapt-side .ph-figure img {
  aspect-ratio: 7 / 4;
}
.page-products .ph-tip {
  background: var(--tianshan);
  color: var(--paper);
  padding: 18px 18px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}
.page-products .ph-tip-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--gold-soft);
}
.page-products .ph-tip p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 243, 236, 0.88);
}

/* ---------- Archive ---------- */
.page-products .ph-archive {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(22px, 3.5vw, 36px);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: inset 0 3px 0 var(--walnut);
}
.page-products .ph-archive h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.16;
  margin: 8px 0 12px;
}
.page-products .ph-archive .lede {
  margin: 0;
}
.page-products .ph-archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-products .ph-archive-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}
.page-products .ph-archive-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-products .stamp {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  padding: 3px 7px;
  background: var(--gold-soft);
  color: var(--walnut-ink);
}

/* ---------- Scenes ---------- */
.page-products .ph-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-products .ph-scene {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 18px 18px 20px;
}
.page-products .ph-scene:nth-child(odd) {
  border-top: 3px solid var(--walnut);
}
.page-products .ph-scene:nth-child(even) {
  border-top: 3px solid var(--tianshan);
}
.page-products .ph-scene-idx {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}
.page-products .ph-scene h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.3;
}
.page-products .ph-scene p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.page-products .ph-figure--scene {
  margin-top: clamp(24px, 4vw, 36px);
}

/* ---------- Service ---------- */
.page-products .ph-service {
  background: linear-gradient(150deg, var(--walnut-deep), var(--walnut-ink));
  color: var(--paper);
}
.page-products .ph-service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}
.page-products .ph-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-products .ph-rhythm li {
  position: relative;
  padding: 16px 16px 18px 20px;
  background: rgba(247, 243, 236, 0.06);
  border-left: 2px solid var(--gold);
}
.page-products .ph-rhythm-tag {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.page-products .ph-rhythm h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--paper);
}
.page-products .ph-rhythm p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(247, 243, 236, 0.75);
}

.page-products .ph-service-side {
  display: grid;
  gap: 18px;
  align-content: start;
}
.page-products .ph-service-side .ph-figure {
  margin: 0;
}
.page-products .ph-service-side .ph-figure img {
  aspect-ratio: 2 / 1;
  border-color: rgba(247, 243, 236, 0.18);
}
.page-products .ph-team {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.page-products .ph-team > div {
  padding: 10px 12px;
  background: rgba(247, 243, 236, 0.05);
  border-top: 1px solid rgba(214, 167, 86, 0.5);
}
.page-products .ph-team dt {
  font-size: 12px;
  color: rgba(247, 243, 236, 0.66);
}
.page-products .ph-team dd {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--paper);
}
.page-products .ph-team dd .mono {
  color: var(--gold);
  font-size: 18px;
}
.page-products .ph-service-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 243, 236, 0.72);
}

/* ---------- Responsive ---------- */
@media (min-width: 620px) {
  .page-products .ph-room-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-products .ph-device-row {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-products .checklist {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-products .ph-meter-wrap {
    grid-column: 1 / -1;
  }
  .page-products .ph-archive {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-products .ph-hero-grid {
    grid-template-columns: 7fr 4fr;
    gap: clamp(32px, 5vw, 72px);
  }
  .page-products .ph-band-track {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    overflow: visible;
    gap: 12px;
  }
  .page-products .ph-band-card {
    flex: none;
  }
  .page-products .ph-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    align-items: stretch;
  }
  .page-products .ph-step {
    border-left: 1px solid var(--line);
    border-top: 3px solid var(--gold);
    padding: 20px 18px 20px;
  }
  .page-products .ph-step + .ph-step::after {
    content: "";
    position: absolute;
    left: -13px;
    top: 34px;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold));
    transform: rotate(-18deg);
  }
  .page-products .ph-room-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-products .ph-adapt-grid {
    grid-template-columns: 7fr 4fr;
    align-items: start;
  }
  .page-products .ph-scenes {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 20px;
  }
  .page-products .ph-scene:nth-child(even) {
    margin-top: 40px;
  }
  .page-products .ph-service-grid {
    grid-template-columns: 7fr 4fr;
    align-items: start;
  }
  .page-products .ph-team {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1140px) {
  .page-products .ph-room-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-products .ph-figure--flow {
    max-width: 76%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .ph-step summary::after,
  .page-products .checklist-meter-fill,
  .page-products .filter-btn {
    transition: none;
  }
}