/* ==========================================================================
   Starlume — Fine Jewellery
   Static site · no external assets, no build step
   1. Tokens & Reset
   2. Typography & utilities
   3. Header / navigation / drawer
   4. Hero
   5. Sections
   6. Media plates (image placeholders)
   7. Featured works / collection grid
   8. About / principles
   9. Product detail
   10. Reviews
   11. Footer
   12. Motion
   13. Responsive
   ========================================================================== */

/* 1. Tokens & Reset ------------------------------------------------------- */
:root {
  --paper: #f7f3ec;
  --paper-2: #f1eae0;
  --paper-3: #e9e0d2;
  --ink: #1a1815;
  --ink-soft: #4a443c;
  --muted: #8c8276;
  --line: rgba(26, 24, 21, 0.14);
  --line-soft: rgba(26, 24, 21, 0.08);
  --gold: #a98b54;
  --gold-soft: #c9b48a;
  --header-h: 78px;
  --shell: 1360px;
  --gutter: clamp(20px, 5vw, 68px);

  --font-display: "Bodoni 72", "Bodoni MT", Didot, "Playfair Display",
    "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, "Times New Roman", serif;
  --font-sans: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", Arial, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 1.1s;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* fine paper grain, purely CSS/SVG — no image files */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.30;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.18'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }
video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
::selection { background: rgba(169, 139, 84, 0.22); }

.loading, .is-loading {
  opacity: 0.35;
  transition: opacity 0.4s var(--ease);
}

/* 2. Typography & utilities ---------------------------------------------- */
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: 0.005em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.9em;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.4;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
  opacity: 0.85;
}
.eyebrow--plain::before { display: none; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(72px, 11vw, 148px); position: relative; }
.section--tight { padding-block: clamp(52px, 7vw, 96px); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

.serif-cn { font-family: var(--font-display); letter-spacing: 0.04em; }

.lede {
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 2.05;
  color: var(--ink-soft);
  letter-spacing: 0.045em;
  max-width: 40em;
}

.muted { color: var(--muted); }
.tbd { color: var(--muted); font-style: italic; letter-spacing: 0.08em; }

.link-line {
  display: inline-flex;
  align-items: center;
  gap: 0.8em;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding-bottom: 8px;
  position: relative;
  color: var(--ink);
}
.link-line::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ink);
  opacity: 0.35;
  transform-origin: left;
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease);
}
.link-line:hover::after { opacity: 1; transform: scaleX(1.08); }
.link-line svg { transition: transform 0.6s var(--ease); }
.link-line:hover svg { transform: translateX(5px); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.9em;
  padding: 17px 30px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: background 0.55s var(--ease), color 0.55s var(--ease),
    border-color 0.55s var(--ease), transform 0.5s var(--ease);
}
.btn:hover { background: transparent; color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn svg { flex: none; }

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  transform: translateY(-160%);
  transition: transform 0.3s var(--ease);
}
.skip-link:focus { transform: none; }

:focus-visible { outline: 1px solid var(--gold); outline-offset: 4px; }

/* 3. Header / navigation / drawer ---------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.6s var(--ease), backdrop-filter 0.6s var(--ease),
    border-color 0.6s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(247, 243, 236, 0.75), transparent);
  opacity: 1;
  transition: opacity 0.5s var(--ease);
  pointer-events: none;
  z-index: -1;
}
.site-header.is-solid {
  background: rgba(247, 243, 236, 0.86);
  -webkit-backdrop-filter: blur(14px) saturate(115%);
  backdrop-filter: blur(14px) saturate(115%);
  border-bottom-color: var(--line-soft);
}
.site-header.is-solid::after { opacity: 0; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 7px;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  margin-right: -0.34em;
}
.brand__sub {
  font-size: 8px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: -0.42em;
}

.nav { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 42px); }
.nav__link {
  position: relative;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 6px 0;
  transition: color 0.4s var(--ease);
  white-space: nowrap;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--ink); }
.nav__link.is-active::after { transform: scaleX(1); background: var(--gold); height: 1px; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-right: -8px;
  position: relative;
  z-index: 95;
}
.nav-toggle span {
  position: absolute;
  left: 8px;
  width: 24px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.5s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { top: 24px; }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

.drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--paper);
  padding: calc(var(--header-h) + 36px) var(--gutter) 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease),
    visibility 0s linear 0.55s;
}
body.menu-open .drawer {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease), visibility 0s;
}
.drawer__links { display: flex; flex-direction: column; }
.drawer__link {
  font-family: var(--font-display);
  font-size: clamp(30px, 9vw, 46px);
  line-height: 1.5;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.drawer__link small {
  font-family: var(--font-sans);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--muted);
}
body.menu-open .drawer__link { opacity: 1; transform: none; }
body.menu-open .drawer__link:nth-child(1) { transition-delay: 0.12s; }
body.menu-open .drawer__link:nth-child(2) { transition-delay: 0.18s; }
body.menu-open .drawer__link:nth-child(3) { transition-delay: 0.24s; }
body.menu-open .drawer__link:nth-child(4) { transition-delay: 0.30s; }
.drawer__foot {
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 2.2;
}
body.menu-open { overflow: hidden; }

/* 4. Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--header-h) + clamp(24px, 5vh, 64px));
  padding-bottom: clamp(28px, 5vh, 64px);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(90% 70% at 78% 22%, rgba(255, 253, 248, 0.95) 0%, rgba(255, 253, 248, 0) 62%),
    radial-gradient(75% 65% at 12% 82%, rgba(233, 223, 207, 0.8) 0%, rgba(233, 223, 207, 0) 70%),
    linear-gradient(160deg, #f8f4ed 0%, #f3ece1 52%, #ece2d2 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 25% 100%;
  opacity: 0.5;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: clamp(28px, 5vw, 80px);
  flex: 1;
}
.hero__copy { padding-block: clamp(10px, 4vh, 48px); }
.hero__title {
  font-size: clamp(46px, 7.2vw, 104px);
  line-height: 1.02;
  letter-spacing: 0.02em;
  margin: 22px 0 0;
}
.hero__title span { display: block; }
.hero__title em {
  font-style: normal;
  letter-spacing: 0.01em;
  color: var(--ink);
  position: relative;
}
.hero__title em::after {
  content: "";
  position: absolute;
  left: 2%;
  bottom: 0.06em;
  width: 96%;
  height: 1px;
  background: var(--gold);
  opacity: 0.55;
}
.hero__lede { margin-top: clamp(20px, 3vh, 34px); max-width: 27em; }
.hero__actions {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 30px);
  flex-wrap: wrap;
  margin-top: clamp(26px, 4vh, 44px);
}
.hero__note {
  margin-top: clamp(24px, 4vh, 44px);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero__arch {
  position: relative;
  width: 100%;
  height: min(66vh, 640px);
  border-radius: 999px 999px 0 0;
  overflow: hidden;
  background:
    radial-gradient(70% 55% at 50% 18%, rgba(255, 252, 246, 0.9), rgba(255, 252, 246, 0) 70%),
    linear-gradient(180deg, #efe6d7 0%, #e7dbc8 55%, #ddcfb8 100%);
  box-shadow: 0 40px 80px -60px rgba(60, 45, 25, 0.55);
}
.hero__arch::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 999px 999px 0 0;
  pointer-events: none;
}
.hero__arch::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, 0.35) 50%, transparent 62%);
  transform: translateX(-30%);
  transition: transform 1.8s var(--ease);
}
.hero__arch:hover::after { transform: translateX(30%); }
.hero__ornament {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 58%;
  height: auto;
  color: rgba(126, 100, 62, 0.55);
}
.hero__arch figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26px;
  text-align: center;
  font-size: 9px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(80, 66, 46, 0.6);
}
.hero__arch .hero__video,
.hero__arch img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__arch .hero__video { opacity: 0; transition: opacity 1.4s var(--ease); }
.hero__arch.is-playing .hero__video { opacity: 1; }
.hero__arch img { opacity: 0; transition: opacity 1.2s var(--ease); }
.hero__arch.is-loaded img { opacity: 1; }
.hero__arch.has-media .hero__ornament { opacity: 0; }
.hero__arch.has-media::before { border-color: rgba(255, 255, 255, 0.35); }

.hero__meta {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 9px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero__scroll { display: inline-flex; align-items: center; gap: 12px; }
.hero__scroll i {
  display: block;
  width: 1px;
  height: 26px;
  background: linear-gradient(180deg, var(--muted), transparent);
  animation: scrollPulse 2.8s var(--ease) infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.5); opacity: 0.4; transform-origin: top; }
  50% { transform: scaleY(1); opacity: 1; transform-origin: top; }
}

/* 5. Sections ------------------------------------------------------------ */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: clamp(36px, 5vw, 64px);
}
.section-head__title {
  font-size: clamp(30px, 3.8vw, 52px);
  margin-top: 18px;
  letter-spacing: 0.03em;
}
.section-head__side { max-width: 26em; }

.page-head {
  padding-top: calc(var(--header-h) + clamp(48px, 8vw, 96px));
  padding-bottom: clamp(28px, 4vw, 52px);
}
.page-head__title {
  font-size: clamp(42px, 6.4vw, 88px);
  margin-top: 20px;
  letter-spacing: 0.03em;
}
.page-head__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.page-head .lede { margin-top: 22px; }
/* 关于页：导语删除后收紧页头下方留白 */
.page-about .page-head { padding-top: calc(var(--header-h) + clamp(24px, 3.4vw, 44px)); padding-bottom: clamp(8px, 1.2vw, 16px); }
.page-about .page-head + .section--tight { padding-top: clamp(14px, 2vw, 26px); }

/* 6. Media plates -------------------------------------------------------- */
.plate {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(80% 60% at 30% 15%, rgba(255, 253, 248, 0.95), rgba(255, 253, 248, 0) 70%),
    linear-gradient(150deg, #efe7da 0%, #f6f1e7 48%, #e6dac6 100%);
  isolation: isolate;
}
.plate::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(26, 24, 21, 0.10);
  pointer-events: none;
  z-index: 3;
}
.plate::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(255, 255, 255, 0.28) 50%, transparent 60%);
  transform: translateX(-45%);
  transition: transform 1.9s var(--ease);
  pointer-events: none;
  z-index: 2;
}
.plate:hover::after { transform: translateX(45%); }
.plate__mark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 9px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: rgba(26, 24, 21, 0.34);
  white-space: nowrap;
  z-index: 1;
}
.plate.is-empty .plate__mark { display: flex; }
.plate__mark::before,
.plate__mark::after {
  content: "";
  width: 1px;
  height: 30px;
  background: rgba(26, 24, 21, 0.16);
}
.plate img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform 1.6s var(--ease), opacity 0.6s var(--ease);
}
.plate picture { display: contents; }
.plate video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  background: #16140f;
}
.plate--4x5 { aspect-ratio: 4 / 5; }
.plate--3x4 { aspect-ratio: 3 / 4; }
.plate--1x1 { aspect-ratio: 1 / 1; }
.plate--3x2 { aspect-ratio: 3 / 2; }
.plate--16x9 { aspect-ratio: 16 / 9; }
.plate--2x3 { aspect-ratio: 2 / 3; }
.plate--wide { aspect-ratio: 16 / 10; }

a:hover .plate img,
.work:hover .plate img { transform: scale(1.045); }

/* 7. Featured works / collection grid ------------------------------------ */
.works {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(12px, 1.8vw, 26px);
  align-items: start;
}
.works .work:nth-child(2),
.works .work:nth-child(4) { margin-top: clamp(14px, 2vw, 32px); }
.works .work:nth-child(3) { margin-top: clamp(28px, 4vw, 64px); }
.works .work:nth-child(5) { margin-top: 0; }

.work { display: block; }
.work__cap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-top: 16px;
  margin-top: 0;
}
.work__name {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.5vw, 21px);
  letter-spacing: 0.06em;
  line-height: 1.3;
}
.work__meta {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 7px;
  line-height: 1.7;
}
.work__price {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* 首页精选：图片下只保留分类大字标题 */
.work__cap--cat {
  display: block;
  padding-top: clamp(14px, 1.6vw, 22px);
}
.work__cat {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.1vw, 30px);
  letter-spacing: 0.14em;
  line-height: 1.25;
  color: var(--ink);
  transition: color 0.6s var(--ease), transform 0.6s var(--ease);
}
.work--featured:hover .work__cat {
  color: var(--gold);
  transform: translateX(4px);
}

.filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  background: rgba(247, 243, 236, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.filter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}
.filters { display: flex; flex-wrap: wrap; align-items: center; gap: clamp(14px, 2.2vw, 34px); }
.filter {
  position: relative;
  padding: 8px 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.4s var(--ease);
}
.filter::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}
.filter:hover { color: var(--ink); }
.filter.is-active { color: var(--ink); }
.filter.is-active::after { transform: scaleX(1); }
.filter__count {
  font-size: 8px;
  vertical-align: super;
  margin-left: 4px;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.filter-result {
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(30px, 4vw, 58px) clamp(18px, 2.6vw, 36px);
  padding-block: clamp(36px, 5vw, 64px) clamp(64px, 9vw, 120px);
}
.collection-grid .work { transition: opacity 0.5s var(--ease), transform 0.5s var(--ease); }
.collection-grid .work.is-hidden {
  display: none;
}
.collection-grid .work.is-entering { opacity: 0; transform: translateY(14px); }

.empty-state {
  padding: clamp(60px, 12vw, 140px) 0;
  text-align: center;
  border: 1px solid var(--line-soft);
  grid-column: 1 / -1;
}
.empty-state__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: 0.06em;
}
.empty-state p { margin-top: 12px; color: var(--muted); font-size: 12px; letter-spacing: 0.14em; }

/* 8. About / principles -------------------------------------------------- */
.intro {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(28px, 6vw, 96px);
  align-items: start;
}
.intro__aside { position: sticky; top: calc(var(--header-h) + 40px); }
.intro__statement {
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.32;
  letter-spacing: 0.04em;
}
.intro__statement em { font-style: italic; color: var(--gold); }
.intro__body { display: flex; flex-direction: column; gap: 22px; }
.intro__body p { color: var(--ink-soft); line-height: 2.1; letter-spacing: 0.04em; }
.intro__sign {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.principle {
  padding: clamp(24px, 3vw, 40px) clamp(18px, 2.4vw, 36px) 0;
  border-left: 1px solid var(--line-soft);
}
.principle:first-child { border-left: 0; padding-left: 0; }
.principle__no {
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.principle__title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  margin-top: 16px;
  letter-spacing: 0.06em;
}
.principle p {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.95;
  letter-spacing: 0.04em;
}

/* 简介区内的竖排版本 */
.principles--stack {
  display: block;
  border-top: 1px solid var(--line);
}
.principles--stack .principle {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 22px);
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-left: 0;
  border-bottom: 1px solid var(--line-soft);
}
.principles--stack .principle:first-child { border-top: 0; }
.principles--stack .principle__no { padding-top: 8px; }
.principles--stack .principle__title {
  margin-top: 0;
  font-size: clamp(19px, 1.9vw, 25px);
}
.principles--stack .principle p {
  margin-top: 8px;
  max-width: 34em;
}

.about-gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 26px);
}
.about-gallery figure { margin: 0; }
.about-gallery figcaption {
  padding-top: 12px;
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}
.about-gallery .g1 { grid-column: 1 / 7; }
.about-gallery .g2 { grid-column: 7 / 13; margin-top: clamp(20px, 5vw, 70px); }
.about-gallery .g3 { grid-column: 1 / 5; margin-top: clamp(0px, 2vw, 28px); }
.about-gallery .g4 { grid-column: 5 / 9; margin-top: clamp(24px, 4.5vw, 64px); }
.about-gallery .g5 { grid-column: 9 / 13; margin-top: clamp(4px, 1vw, 14px); }

.quote {
  max-width: min(620px, 92%);
  margin: 0 auto;
  text-align: center;
  padding-block: clamp(20px, 4vw, 40px);
}
.quote__mark {
  font-family: var(--font-display);
  font-size: 46px;
  line-height: 1;
  color: var(--gold);
  opacity: 0.7;
}
.quote p {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 34px);
  line-height: 1.6;
  letter-spacing: 0.08em;
  margin-top: 16px;
}
.quote cite {
  display: block;
  margin-top: 20px;
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
}

/* 9. Product detail ------------------------------------------------------ */
.product {
  padding-top: calc(var(--header-h) + clamp(24px, 4vw, 52px));
  padding-bottom: clamp(60px, 9vw, 120px);
}
.crumbs {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
}
.crumbs a { transition: color 0.4s var(--ease); }
.crumbs a:hover { color: var(--ink); }
.crumbs span { opacity: 0.45; }
.crumbs em { font-style: normal; color: var(--ink-soft); }

.product__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: clamp(30px, 5vw, 80px);
  align-items: start;
  margin-top: clamp(24px, 3vw, 40px);
}

.stage__main { transition: opacity 0.35s var(--ease); }
.stage__main.is-fading { opacity: 0.25; }
.stage__main .plate { background-color: var(--paper-2); }

.stage__thumbs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.stage__thumbs[hidden] { display: none; }
.thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--paper-2);
  border: 1px solid transparent;
  transition: border-color 0.4s var(--ease), opacity 0.4s var(--ease);
  opacity: 0.78;
}
.thumb:hover { opacity: 1; }
.thumb.is-active { border-color: var(--ink); opacity: 1; }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb__mark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 7px;
  letter-spacing: 0.26em;
  color: rgba(26, 24, 21, 0.35);
  text-align: center;
  padding: 6px;
}
.thumb__play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(26, 24, 21, 0.42);
  color: var(--paper);
}
.thumb__play svg { width: 18px; height: 18px; }
.thumb__video { border: 1px solid var(--line); }

.stage__video { margin-top: 14px; }
.stage__video video {
  width: 100%;
  background: #16140f;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.product__info { position: sticky; top: calc(var(--header-h) + 38px); }
.product__code {
  font-size: 9px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
}
.product__title {
  font-size: clamp(32px, 3.8vw, 52px);
  letter-spacing: 0.04em;
  margin-top: 16px;
  line-height: 1.2;
}
.product__price {
  font-family: var(--font-display);
  font-size: clamp(20px, 1.8vw, 26px);
  letter-spacing: 0.06em;
  margin-top: 18px;
}
.product__desc {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 2;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.product__desc p { margin: 0; }
.product__desc p + p { margin-top: 10px; }

.spec {
  margin-top: 26px;
  border-top: 1px solid var(--line);
}
.spec__row {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: baseline;
}
.spec__key {
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.spec__val {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink);
  word-break: break-word;
}
.spec__val.is-tbd { color: var(--muted); font-style: italic; letter-spacing: 0.1em; }

.product__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}
.btn--wa { width: 100%; justify-content: space-between; }
.product__hint {
  margin-top: 14px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  line-height: 1.9;
}

.product-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: clamp(36px, 5vw, 64px);
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.product-nav__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 0;
  transition: opacity 0.4s var(--ease);
}
.product-nav__item:hover { opacity: 0.65; }
.product-nav__item--next { text-align: right; align-items: flex-end; }
.product-nav__key {
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
}
.product-nav__name {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.06em;
}

.notfound {
  padding-block: clamp(80px, 14vw, 180px);
  text-align: center;
}
.notfound h1 { font-size: clamp(32px, 5vw, 56px); letter-spacing: 0.04em; }
.notfound p { margin-top: 16px; color: var(--muted); }
.notfound .btn { margin-top: 30px; }

/* 10. Reviews ------------------------------------------------------------ */
.review-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
  padding-bottom: clamp(64px, 9vw, 120px);
}
.review-card {
  border: 1px solid var(--line-soft);
  background: rgba(255, 253, 248, 0.5);
  padding: clamp(22px, 3vw, 38px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease);
}
.review-card:hover { border-color: var(--line); background: rgba(255, 253, 248, 0.9); }
.review-card__top {
  display: flex;
  align-items: center;
  gap: 14px;
}
.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  flex: none;
  background: linear-gradient(145deg, #ece2d2, #ded0b9);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #6f6250;
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.review-card__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.08em;
}
.review-card__date {
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 5px;
}
.review-card__body {
  font-size: 13.5px;
  line-height: 2.05;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.review-card__body.is-empty { color: var(--muted); font-style: italic; }
.review-card .plate { margin-top: auto; }
.review-card__pic { margin-top: auto; }
/* 配图稍小：4:5 竖幅、限宽居中 */
.review-card__pic .plate { max-width: min(300px, 82%); margin-inline: auto; }
.review-card__quote {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 0.6;
  color: var(--gold);
  opacity: 0.6;
  height: 14px;
}

/* 11. Footer ------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: 30px;
  margin-top: clamp(20px, 4vw, 40px);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 0.7fr 1fr;
  gap: clamp(24px, 4vw, 60px);
  padding-bottom: clamp(34px, 5vw, 58px);
}
.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(26px, 2.6vw, 34px);
  letter-spacing: 0.3em;
  margin-right: -0.3em;
  text-transform: uppercase;
}
.footer-brand p {
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted);
  line-height: 2;
  max-width: 24em;
  letter-spacing: 0.05em;
}
.footer-col__title {
  font-size: 9px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  padding: 5px 0;
  transition: color 0.4s var(--ease);
}
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-bottom__links { display: flex; gap: 24px; }

/* 12. Motion ------------------------------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 26px, 0);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-parallax] { will-change: transform; }
[data-stagger] > * { --d: 0ms; }

.hero__copy, .hero__arch { opacity: 0; transform: translateY(22px); }
.js .hero.is-ready .hero__copy,
.js .hero.is-ready .hero__arch {
  opacity: 1;
  transform: none;
  transition: opacity 1.4s var(--ease), transform 1.4s var(--ease);
}
.js .hero.is-ready .hero__arch { transition-delay: 0.18s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal],
  .hero__copy,
  .hero__arch { opacity: 1 !important; transform: none !important; }
  .plate::after { display: none; }
  a:hover .plate img,
  .work:hover .plate img { transform: none; }
  .hero__scroll i { animation: none; }
}

/* 13. Responsive --------------------------------------------------------- */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1.4fr 0.8fr 0.8fr; }
  .footer-grid .footer-col:last-child { grid-column: 1 / -1; }
  .hero__title { font-size: clamp(42px, 7.6vw, 78px); }
  .works { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 18px; }
  .works .work:nth-child(2) { margin-top: 36px; }
  .works .work:nth-child(3) { margin-top: 10px; }
  .works .work:nth-child(4),
  .works .work:nth-child(5) { margin-top: 0; }
  .works .work--set {
    grid-column: 1 / -1;
    width: min(72%, 340px);
    margin-inline: auto;
  }
}

@media (max-width: 980px) {
  :root { --header-h: 68px; }
  .nav { display: none; }
  .nav-toggle { display: block; }
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 40px); padding-bottom: 32px; }
  .hero__inner { grid-template-columns: 1fr; gap: 36px; }
  .hero__copy { padding-block: 0; }
  .hero__arch { height: min(58vh, 480px); width: min(100%, 460px); margin-inline: auto; order: 2; }
  .hero__copy { order: 1; }
  .hero__meta { margin-top: 32px; }
  .hero__bg::after { background-size: 50% 100%; opacity: 0.35; }

  .intro { grid-template-columns: 1fr; gap: 34px; }
  .intro__aside { position: static; }
  .principles { grid-template-columns: 1fr; border-top: 0; }
  .principle { border-left: 0; border-top: 1px solid var(--line-soft); padding-inline: 0; }
  .principle:first-child { border-top: 1px solid var(--line); }
  .principles--stack { border-top: 1px solid var(--line); }
  .principles--stack .principle {
    border-top: 0;
    border-bottom: 1px solid var(--line-soft);
    padding-inline: 0;
  }

  .product__grid { grid-template-columns: 1fr; gap: 34px; }
  .product__info { position: static; }
  .stage__thumbs { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .works { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .works .work:nth-child(2),
  .works .work:nth-child(4) { margin-top: 40px; }
  .works .work:nth-child(3),
  .works .work:nth-child(5) { margin-top: 0; }
}

@media (max-width: 820px) {
  .works { grid-template-columns: 1fr 1fr; gap: 26px 18px; }
  .works .work:nth-child(2),
  .works .work:nth-child(4) { margin-top: 40px; }
  .works .work:nth-child(3),
  .works .work:nth-child(5) { margin-top: 0; }
  .collection-grid { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .about-gallery .g1 { grid-column: 1 / 8; }
  .about-gallery .g2 { grid-column: 8 / 13; margin-top: 40px; }
  .about-gallery .g3 { grid-column: 1 / 6; }
  .about-gallery .g4 { grid-column: 6 / 13; }
  .about-gallery .g5 { grid-column: 2 / 8; margin-top: 0; }
  .filter-inner { min-height: 58px; }
  .filter-result { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 24px; }
  .footer-grid .footer-col:last-child { grid-column: auto; }
}

@media (max-width: 620px) {
  body { font-size: 14px; }
  .eyebrow { font-size: 9px; letter-spacing: 0.28em; }
  .hero__title { font-size: clamp(38px, 11vw, 56px); line-height: 1.08; }
  .hero__lede { font-size: 13.5px; line-height: 2; }
  .hero__actions { gap: 14px; }
  .btn { padding: 15px 22px; font-size: 10px; }
  .hero__arch { height: 46vh; min-height: 300px; }
  .hero__meta { font-size: 8px; letter-spacing: 0.2em; flex-wrap: wrap; row-gap: 10px; }
  .section-head { margin-bottom: 28px; }
  .works { grid-template-columns: 1fr 1fr; gap: 26px 14px; }
  .works .work:nth-child(2),
  .works .work:nth-child(4) { margin-top: 28px; }
  .works .work:nth-child(3),
  .works .work:nth-child(5) { margin-top: 0; }
  .work__cap { display: block; padding-top: 12px; }
  .work__name { font-size: 16px; }
  .work__meta { font-size: 9px; letter-spacing: 0.12em; }
  .work__price { display: block; margin-top: 6px; font-size: 10px; }
  .collection-grid { grid-template-columns: 1fr; gap: 34px; }
  .collection-grid .plate { aspect-ratio: 4 / 5; }
  .filters { gap: 8px 18px; flex-wrap: wrap; width: 100%; padding-block: 4px; }
  .filter { white-space: nowrap; font-size: 10px; }
  .filter-bar { position: sticky; }
  .product-nav { grid-template-columns: 1fr; gap: 8px; }
  .product-nav__item--next { text-align: left; align-items: flex-start; }
  .spec__row { grid-template-columns: 84px 1fr; gap: 12px; }
  .product__title { font-size: 32px; }
  .stage__thumbs { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { font-size: 8px; letter-spacing: 0.16em; }
  .quote p { font-size: 22px; }
  .about-gallery { gap: 14px; }
  .about-gallery figcaption { flex-direction: column; gap: 3px; }
  .about-gallery .g1 { grid-column: 1 / 7; }
  .about-gallery .g2 { grid-column: 7 / 13; margin-top: 40px; }
  .about-gallery .g3 {
    grid-column: 1 / -1;
    margin-top: 0;
    width: min(72%, 360px);
    margin-inline: auto;
  }
  .about-gallery .g4 { grid-column: 1 / 7; margin-top: 0; }
  .about-gallery .g5 { grid-column: 7 / 13; margin-top: 40px; }
}