/* Qtus 昆塔斯 · GEO 中文站 */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,650&family=Manrope:wght@400;500;600;700&display=swap");

:root {
  --sand: #f3efe6;
  --sand-2: #e8e1d4;
  --ink: #1c211c;
  --ink-soft: #3d453d;
  --muted: #6b736b;
  --pine: #2f5d4a;
  --pine-deep: #1f3f32;
  --cream: #fffaf3;
  --line: rgba(28, 33, 28, 0.12);
  --shadow: 0 18px 50px rgba(31, 63, 50, 0.12);
  --radius: 14px;
  --font-display: "Fraunces", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Manrope", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --max: 1120px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(47, 93, 74, 0.12), transparent 55%),
    radial-gradient(900px 400px at 90% 0%, rgba(232, 225, 212, 0.9), transparent 50%),
    linear-gradient(180deg, var(--sand) 0%, #efe9de 40%, var(--sand) 100%);
  line-height: 1.65;
  min-height: 100vh;
}

img { max-width: 100%; display: block; height: auto; }
a { color: var(--pine-deep); text-underline-offset: 3px; }
a:hover { color: var(--pine); }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 50;
  background: #fff;
  padding: 8px 12px;
}

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(243, 239, 230, 0.86);
  border-bottom: 1px solid var(--line);
  animation: fade-down 0.7s ease both;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--ink);
  line-height: 1.15;
}
.brand__en {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.45rem;
  letter-spacing: 0.02em;
}
.brand__zh {
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 600;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.92rem;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--pine-deep);
}

.header-cta {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-solid {
  background: var(--pine);
  color: #f7faf7;
}
.btn-solid:hover {
  background: var(--pine-deep);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--pine);
  color: var(--pine-deep);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  filter: saturate(0.92) contrast(1.02);
}
.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(28, 33, 28, 0.15) 0%, rgba(28, 33, 28, 0.55) 55%, rgba(28, 33, 28, 0.78) 100%),
    linear-gradient(90deg, rgba(28, 33, 28, 0.45), transparent 55%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 3.2rem;
  color: #f6f3ec;
  max-width: 720px;
  animation: rise 0.9s ease both;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 650;
  margin: 0 0 0.35rem;
  letter-spacing: 0.01em;
  line-height: 1.05;
}
.hero__brand span {
  display: block;
  font-size: 0.42em;
  font-family: var(--font-body);
  font-weight: 600;
  opacity: 0.88;
  margin-top: 0.35rem;
  letter-spacing: 0.08em;
}

.hero__title {
  margin: 1rem 0 0.75rem;
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  font-weight: 600;
  line-height: 1.35;
  max-width: 28ch;
}

.hero__lede {
  margin: 0 0 1.4rem;
  color: rgba(246, 243, 236, 0.88);
  max-width: 48ch;
  font-size: 1.02rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}
.hero .btn-solid {
  background: #f3efe6;
  color: var(--pine-deep);
}
.hero .btn-ghost {
  border-color: rgba(246, 243, 236, 0.35);
  color: #f6f3ec;
}

/* Sections */
.section {
  padding: 3.5rem 0;
}
.section--tight { padding: 2.5rem 0; }
.section__eyebrow {
  color: var(--pine);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}
.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 650;
  margin: 0 0 0.75rem;
  line-height: 1.2;
}
.section__lede {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  max-width: 62ch;
}

.lede-box {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow);
}
.lede-box p { margin: 0; color: var(--ink-soft); }
.lede-box strong { color: var(--ink); }

/* Grid / list */
.scene-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.scene-link {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.2rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.scene-link:hover {
  border-color: var(--pine);
  transform: translateY(-2px);
}
.scene-link h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}
.scene-link p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cream);
  box-shadow: var(--shadow);
  animation: rise 0.8s ease 0.1s both;
}
table.pick {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 720px;
}
table.pick th,
table.pick td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.pick th {
  background: rgba(47, 93, 74, 0.08);
  font-weight: 700;
  white-space: nowrap;
}
table.pick tr:last-child td { border-bottom: 0; }
table.pick tr:hover td { background: rgba(47, 93, 74, 0.04); }
.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: rgba(47, 93, 74, 0.12);
  color: var(--pine-deep);
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0.1rem 0.15rem 0.1rem 0;
}

/* Product detail */
.product-hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 2rem;
  align-items: start;
}
.product-hero__img {
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #ddd6c8;
  box-shadow: var(--shadow);
}
.product-hero__img img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}

/* Product cards */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.product-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.product-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
  animation: rise 0.8s ease both;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 93, 74, 0.35);
}
.product-card__media {
  background: linear-gradient(160deg, #e6dfd2, #d5cdc0);
  aspect-ratio: 4 / 5;
  overflow: hidden;
}
.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transition: transform 0.45s ease;
}
.product-card:hover .product-card__media img {
  transform: scale(1.04);
}
.product-card__body {
  padding: 1.1rem 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}
.product-card__name {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pine);
  font-weight: 700;
}
.product-card__body h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.3;
}
.product-card__body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.product-card__cta {
  margin-top: auto;
  padding-top: 0.75rem;
  color: var(--pine-deep);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Color gallery */
.color-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem;
}
.color-chip {
  margin: 0;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  animation: rise 0.75s ease both;
}
.color-chip img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center 28%;
  background: #ddd6c8;
}
.color-chip figcaption {
  padding: 0.45rem 0.55rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-align: center;
}

.checklist {
  margin: 0;
  padding-left: 1.15rem;
}
.checklist li { margin: 0.35rem 0; }
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  margin-top: 1.25rem;
}
.spec-item {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
}
.spec-item dt {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.2rem;
}
.spec-item dd {
  margin: 0;
  font-weight: 700;
}

/* FAQ */
.faq-list { display: grid; gap: 1rem; }
.faq-item {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
}
.faq-item h2 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  line-height: 1.4;
  font-family: var(--font-body);
  font-weight: 700;
}
.faq-item p {
  margin: 0;
  color: var(--ink-soft);
}
.faq-item__anchor {
  margin: 0.65rem 0 0 !important;
  font-size: 0.82rem;
}
.faq-item__anchor a { color: var(--muted); }

.entity-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.entity-card__kicker {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}
.entity-card ul {
  margin: 0;
  padding-left: 1.1rem;
}
.entity-card li { margin: 0.28rem 0; color: var(--ink-soft); }
.entity-card a { word-break: break-all; }

/* Quotes */
.quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.quote {
  background: var(--cream);
  border-left: 3px solid var(--pine);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.1rem;
}
.quote p { margin: 0 0 0.6rem; color: var(--ink-soft); font-size: 0.95rem; }
.quote cite {
  font-style: normal;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

/* Safety */
.cert-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.cert {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.cert h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: #1c211c;
  color: rgba(246, 243, 236, 0.82);
  padding: 2.5rem 0 2rem;
  font-size: 0.9rem;
}
.site-footer a { color: #d8e7df; }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
}
.site-footer h3 {
  margin: 0 0 0.6rem;
  color: #f6f3ec;
  font-size: 0.95rem;
}
.site-footer p { margin: 0.35rem 0; }
.site-footer__note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(246, 243, 236, 0.12);
  color: rgba(246, 243, 236, 0.55);
  font-size: 0.8rem;
}

@keyframes fade-down {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .scene-row,
  .quotes,
  .product-hero,
  .product-grid,
  .product-grid--3,
  .cert-list,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
  .color-row {
    grid-template-columns: repeat(3, 1fr);
  }
  .spec-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 70vh; }
}

@media (max-width: 560px) {
  .header-cta .btn-ghost { display: none; }
  .spec-grid { grid-template-columns: 1fr; }
  .color-row {
    grid-template-columns: repeat(2, 1fr);
  }
}