/* ==========================================================================
   洛伊士 LOESY — 品牌站样式
   ========================================================================== */

@font-face { font-family: "Jost"; font-weight: 200; font-display: swap; src: url("../assets/fonts/jost-latin-200-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 300; font-display: swap; src: url("../assets/fonts/jost-latin-300-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 400; font-display: swap; src: url("../assets/fonts/jost-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Jost"; font-weight: 500; font-display: swap; src: url("../assets/fonts/jost-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Cormorant"; font-style: italic; font-weight: 300; font-display: swap; src: url("../assets/fonts/cormorant-garamond-latin-300-italic.woff2") format("woff2"); }
@font-face { font-family: "Cormorant"; font-style: italic; font-weight: 400; font-display: swap; src: url("../assets/fonts/cormorant-garamond-latin-400-italic.woff2") format("woff2"); }

:root {
  --ink: #0b0a09;
  --ink-2: #141210;
  --ink-3: #1d1a17;
  --bone: #ece8e1;
  --bone-2: #e1dcd3;
  --dim: rgba(236, 232, 225, .56);
  --dim-2: rgba(236, 232, 225, .32);
  --line: rgba(236, 232, 225, .14);
  --line-dark: rgba(11, 10, 9, .14);
  --amber: #e9a14a;
  --ember: #c9432f;
  --douyin: #fe2c55;
  --douyin-2: #25f4ee;
  --tmall: #ff5000;
  --jd: #e1251b;
  --xhs: #ff2442;

  --f-en: "Jost", "Futura", "Century Gothic", "Avenir Next", sans-serif;
  --f-it: "Cormorant", "Cormorant Garamond", "Didot", "Times New Roman", serif;
  --f-zh: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --f-zh-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;

  --pad: clamp(20px, 5.5vw, 96px);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --radius: clamp(16px, 2vw, 28px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--f-zh);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.is-loading { overflow: hidden; }
img, video, svg { 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 { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
::selection { background: var(--amber); color: var(--ink); }

/* ---------- 通用 ---------- */
.eyebrow {
  display: flex; align-items: center; gap: 14px;
  font: 400 12px/1 var(--f-en); letter-spacing: .24em; text-transform: uppercase;
  color: var(--dim);
}
.eyebrow span { color: var(--amber); letter-spacing: .1em; }
.eyebrow span::after { content: ""; display: inline-block; width: 36px; height: 1px; margin-left: 14px; vertical-align: middle; background: currentColor; opacity: .6; }
.eyebrow--dark { color: rgba(11, 10, 9, .55); }
.eyebrow--dark span { color: var(--ember); }

.h2 {
  margin-top: 28px;
  font-weight: 300;
  font-size: clamp(34px, 3.6vw, 60px);
  line-height: 1.16;
  letter-spacing: .01em;
}
.h2--dark { color: var(--ink); }
.split-line { display: block; overflow: hidden; padding-bottom: .06em; }
.split-line > span { display: inline-block; will-change: transform; }

.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  height: 52px; padding: 0 26px; border-radius: 999px;
  font-size: 15px; letter-spacing: .04em; white-space: nowrap;
  transition: background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease);
}
.btn i { font-style: normal; font-family: var(--f-en); transition: transform .4s var(--ease); }
.btn:hover i { transform: translate(3px, -3px); }
.btn--tmall { background: var(--tmall); color: #fff; }
.btn--tmall:hover { background: #ff6a24; }
.btn--douyin { background: var(--bone); color: var(--ink); }
.btn--douyin:hover { background: #fff; }
.btn--ghost { border: 1px solid var(--line); color: var(--bone); }
.btn--ghost:hover { border-color: var(--bone); }
.btn--dark { background: var(--ink); color: var(--bone); }
.btn--dark:hover { background: #2a2622; }
.btn--line-dark { border: 1px solid rgba(11, 10, 9, .25); color: var(--ink); }
.btn--line-dark:hover { border-color: var(--ink); }
.btn--sm { height: 38px; padding: 0 16px; font-size: 13px; }

.pill {
  display: inline-flex; align-items: center; height: 34px; padding: 0 16px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .45); font-size: 13px; letter-spacing: .08em;
  transition: background .3s, color .3s;
}
.pill:hover { background: #fff; color: #000; }

/* ---------- 加载 ---------- */
.loader {
  position: fixed; inset: 0; z-index: 200; clip-path: inset(0 0 0% 0);
  display: grid; place-content: center; justify-items: center; gap: 28px;
  background: var(--ink);
}
.loader__mark { width: clamp(76px, 9vw, 120px); aspect-ratio: 1; color: var(--bone); }
.loader__svg { width: 100%; height: 100%; overflow: visible; }
.loader__path { fill: var(--bone); fill-rule: evenodd; fill-opacity: 0; stroke: var(--bone); stroke-width: 5; }
.loader__word { display: flex; gap: .55em; font: 200 clamp(22px, 2.4vw, 32px)/1 var(--f-en); letter-spacing: .1em; overflow: hidden; }
.loader__word span { display: inline-block; transform: translateY(110%); }
.loader__meta { display: flex; gap: 40px; font-size: 12px; letter-spacing: .3em; color: var(--dim); }
.loader__count { font-family: var(--f-en); letter-spacing: .12em; color: var(--bone); min-width: 3ch; }
.loader__bar { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--line); }
.loader__bar i { position: absolute; inset: 0; background: var(--amber); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- 光标 ---------- */
.cursor { position: fixed; left: 0; top: 0; z-index: 150; pointer-events: none; mix-blend-mode: difference; }
.cursor__dot { position: absolute; width: 6px; height: 6px; margin: -3px 0 0 -3px; border-radius: 50%; background: #fff; }
.cursor__ring {
  position: absolute; width: 38px; height: 38px; margin: -19px 0 0 -19px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .7);
  display: grid; place-items: center;
  transition: width .45s var(--ease), height .45s var(--ease), margin .45s var(--ease), background .45s var(--ease), border-color .45s;
}
.cursor__label { font-size: 12px; letter-spacing: .12em; color: #000; opacity: 0; transition: opacity .3s; white-space: nowrap; }
.cursor.is-label .cursor__ring { width: 84px; height: 84px; margin: -42px 0 0 -42px; background: #fff; border-color: #fff; }
.cursor.is-label .cursor__label { opacity: 1; }
.cursor.is-link .cursor__ring { width: 58px; height: 58px; margin: -29px 0 0 -29px; border-color: #fff; }
.cursor.is-hidden { opacity: 0; }
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

.grain {
  position: fixed; inset: -60%; z-index: 120; pointer-events: none; opacity: .07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); } 20% { transform: translate(-4%, 3%); } 40% { transform: translate(3%, -5%); }
  60% { transform: translate(-6%, -2%); } 80% { transform: translate(5%, 4%); } 100% { transform: translate(0, 0); }
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 90;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 20px var(--pad);
  color: #fff; mix-blend-mode: difference;
  pointer-events: none;
}
.nav > * { pointer-events: auto; }
.nav__brand { display: flex; align-items: center; gap: 12px; }
.nav__mark { width: 30px; height: 30px; }
.nav__mark svg, .footer__mark svg { width: 100%; height: 100%; }
.nav__word { font: 300 17px/1 var(--f-en); letter-spacing: .42em; }
.nav__links { display: flex; gap: clamp(16px, 2.6vw, 40px); font-size: 14px; letter-spacing: .14em; }
.nav__links a { position: relative; padding: 6px 0; opacity: .8; transition: opacity .3s; }
.nav__links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .5s var(--ease); }
.nav__links a:hover, .nav__links a.is-active { opacity: 1; }
.nav__links a:hover::after, .nav__links a.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav__cta { display: flex; gap: 10px; }
.nav__progress { position: absolute; left: 0; right: 0; bottom: 0; height: 1px; }
.nav__progress i { position: absolute; inset: 0; background: #fff; transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- 首屏 ---------- */
.hero { position: relative; height: 320vh; background: var(--ink); }
.hero__pin { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.hero__word {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; justify-content: center; gap: .16em;
  font: 200 clamp(92px, 25vw, 460px)/.8 var(--f-en);
  letter-spacing: 0; color: var(--bone);
  white-space: nowrap; pointer-events: none;
}
.hero__word span { display: inline-block; will-change: transform; }
.hero__gl { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: pan-y; cursor: grab; }
.hero__gl:active { cursor: grabbing; }
.hero__photo { position: absolute; inset: 0; clip-path: circle(0% at 50% 50%); pointer-events: none; }
.hero__photo img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 52%; transform: scale(1.18); }
.hero__photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,10,9,.55), rgba(11,10,9,0) 55%), linear-gradient(0deg, rgba(11,10,9,.5), rgba(11,10,9,0) 40%); }
.hero__lensbar {
  position: absolute; right: var(--pad); bottom: 34px; display: grid; justify-items: end; gap: 12px;
}
.hero__lensbar p { display: flex; gap: 12px; align-items: baseline; font-size: 12px; letter-spacing: .12em; color: var(--dim); }
.hero__lensbar b { font: 400 13px/1 var(--f-en); letter-spacing: .2em; color: var(--bone); }
.hero__chips { display: flex; gap: 8px; }
.hero__chips button {
  display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px 0 5px; border-radius: 999px;
  border: 1px solid var(--line); font-size: 13px; letter-spacing: .08em; color: var(--bone); background: rgba(11,10,9,.35);
  transition: border-color .3s, background .3s;
}
.hero__chips button i { width: 26px; height: 26px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(255,255,255,.2), inset -5px -7px 12px rgba(0,0,0,.35), inset 4px 5px 9px rgba(255,255,255,.18); }
.hero__chips button:hover { border-color: var(--dim); }
.hero__chips button.is-active { border-color: var(--bone); background: rgba(236,232,225,.08); }
.hero__corner {
  position: absolute; top: 96px; display: grid; gap: 6px;
  font: 400 11px/1.2 var(--f-en); letter-spacing: .28em; color: var(--dim);
}
.hero__corner span:last-child { font-family: var(--f-zh); letter-spacing: .3em; color: var(--bone); }
.hero__corner--tl { left: var(--pad); }
.hero__corner--tr { right: var(--pad); text-align: right; }
.hero__copy { position: absolute; left: var(--pad); bottom: clamp(70px, 13vh, 150px); max-width: 92vw; pointer-events: none; }
.hero__kicker { display: flex; gap: 18px; font: 400 12px/1 var(--f-en); letter-spacing: .28em; color: var(--bone); margin-bottom: 22px; }
.hero__kicker span:last-child { font-family: var(--f-zh); letter-spacing: .16em; color: var(--amber); }
.hero__title { font-weight: 300; font-size: clamp(52px, 6.4vw, 112px); line-height: 1.02; letter-spacing: .02em; text-shadow: 0 6px 40px rgba(0, 0, 0, .35); }
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > span { display: inline-block; }
.hero__en { margin-top: 16px; font: italic 300 clamp(20px, 2.2vw, 34px)/1 var(--f-it); color: var(--bone); opacity: .85; }
.hero__scroll {
  position: absolute; left: var(--pad); bottom: 34px;
  display: grid; justify-items: start; gap: 12px; font-size: 12px; letter-spacing: .24em; color: var(--dim);
}
.hero__scroll i { position: relative; width: 1px; height: 46px; background: var(--line); overflow: hidden; }
.hero__scroll i::after { content: ""; position: absolute; left: 0; top: -40%; width: 1px; height: 40%; background: var(--bone); animation: drip 2s var(--ease) infinite; }
@keyframes drip { to { top: 100%; } }

/* ---------- 品牌主张 ---------- */
.about { position: relative; padding: clamp(120px, 22vh, 240px) var(--pad) clamp(90px, 16vh, 180px); background: var(--ink); }
.about__statement {
  margin-top: 44px; max-width: 21em;
  font-weight: 300; font-size: clamp(26px, 2.9vw, 48px); line-height: 1.5; letter-spacing: .02em;
}
.about__statement .ch { opacity: .13; transition: none; }
.about__founder {
  margin-top: clamp(80px, 14vh, 160px);
  display: grid; grid-template-columns: minmax(220px, 380px) 1fr; gap: clamp(32px, 7vw, 120px); align-items: end;
}
.about__video { position: relative; aspect-ratio: 3 / 4; border-radius: var(--radius); overflow: hidden; background: var(--ink-3); }
.about__video video { width: 100%; height: 100%; object-fit: cover; transform: scale(1.12); }
.about__video figcaption, .polar__clip figcaption, .channel__video figcaption {
  position: absolute; left: 14px; bottom: 12px; font-size: 12px; letter-spacing: .12em;
  padding: 6px 10px; border-radius: 999px; background: rgba(11, 10, 9, .55); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.about__quote p { font-family: var(--f-zh-serif); font-weight: 400; font-size: clamp(26px, 2.6vw, 42px); line-height: 1.4; }
.about__quote footer { margin-top: 28px; font-size: 15px; color: var(--bone); letter-spacing: .1em; }
.about__quote footer span { display: block; margin-top: 10px; font-size: 13px; color: var(--dim); letter-spacing: .06em; line-height: 1.8; }
.stats {
  margin-top: clamp(80px, 14vh, 160px);
  display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line);
}
.stats li { padding: 34px 22px 0 0; border-right: 1px solid var(--line); }
.stats li + li { padding-left: 26px; }
.stats li:last-child { border-right: 0; }
.stats b { font: 200 clamp(44px, 5.6vw, 92px)/1 var(--f-en); letter-spacing: -.01em; }
.stats i { font: 300 18px/1 var(--f-en); font-style: normal; margin-left: 6px; color: var(--amber); }
.stats span { display: block; margin-top: 16px; font-size: 13px; color: var(--dim); letter-spacing: .08em; }

/* ---------- 偏光实验室 ---------- */
.polar { position: relative; padding: clamp(110px, 18vh, 200px) 0 clamp(80px, 12vh, 140px); background: linear-gradient(180deg, var(--ink) 0%, #100e0c 100%); }
.polar__head { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: end; padding: 0 var(--pad); }
.polar__head .eyebrow { grid-column: 1 / -1; }
.polar__head .h2 { margin-top: 0; }
.polar__lead { max-width: 30em; font-size: 16px; line-height: 1.9; color: var(--dim); }
.polar__stage {
  position: relative; margin: clamp(40px, 7vh, 70px) clamp(12px, 3vw, 48px) 0;
  height: min(86vh, 58vw); min-height: 440px;
  border-radius: var(--radius); overflow: hidden; background: #1a2533;
  touch-action: pan-y;
}
.polar__canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.polar__stage.is-fallback { background: url("../assets/products/l7071/w2.webp") center / cover; }
.polar__tag {
  position: absolute; z-index: 2; pointer-events: none;
  font: 400 11px/1 var(--f-en); letter-spacing: .24em;
  padding: 9px 14px; border-radius: 999px; background: rgba(11, 10, 9, .45); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.polar__tag--naked { left: 20px; top: 20px; }
.polar__tag--lens { left: 0; top: 0; display: flex; gap: 10px; align-items: center; font-family: var(--f-zh); letter-spacing: .1em; font-size: 12px; will-change: transform; white-space: nowrap; }
.polar__tag--lens b { font-weight: 500; color: var(--amber); }
.polar__hint { position: absolute; right: 20px; top: 20px; z-index: 2; font-size: 12px; letter-spacing: .2em; color: rgba(255, 255, 255, .8); pointer-events: none; }
.polar__ui {
  display: grid; grid-template-columns: auto 1fr 150px; gap: clamp(20px, 3vw, 48px); align-items: center;
  padding: 28px var(--pad) 0;
}
.polar__chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 10px; height: 44px; padding: 0 18px 0 8px;
  border-radius: 999px; border: 1px solid var(--line); font-size: 14px; letter-spacing: .06em;
  transition: border-color .3s, background .3s;
}
.chip i { width: 28px; height: 28px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .25), inset -6px -8px 14px rgba(0, 0, 0, .35); }
.chip:hover { border-color: var(--dim); }
.chip.is-active { border-color: var(--bone); background: rgba(236, 232, 225, .06); }
.polar__info-title { font-size: 15px; color: var(--bone); letter-spacing: .06em; }
.polar__info-desc { margin-top: 6px; font-size: 14px; color: var(--dim); line-height: 1.8; max-width: 42em; }
.polar__clip { position: relative; width: 150px; aspect-ratio: 3 / 4; border-radius: 14px; overflow: hidden; background: var(--ink-3); }
.polar__clip video { width: 100%; height: 100%; object-fit: cover; }
.polar__clip figcaption { left: 8px; bottom: 8px; font-size: 10px; padding: 4px 8px; }

/* ---------- 型号 ---------- */
.models { position: relative; background: var(--bone); color: var(--ink); }
.models__head { position: relative; z-index: 2; padding: clamp(110px, 18vh, 200px) var(--pad) 40px; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 24px; }
.models__head .eyebrow { grid-column: 1 / -1; }
.models__filter { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.filter {
  height: 40px; padding: 0 18px; border-radius: 999px; border: 1px solid rgba(11, 10, 9, .18);
  font-size: 14px; letter-spacing: .06em; transition: background .3s, color .3s, border-color .3s;
}
.filter:hover { border-color: var(--ink); }
.filter.is-active { background: var(--ink); color: var(--bone); border-color: var(--ink); }
.filter sup { margin-left: 4px; font-family: var(--f-en); font-size: 10px; opacity: .6; }

.stage-track { position: relative; }
.stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.stage__bg { position: absolute; inset: 0; background: var(--bone); }
.stage__bg::after { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 55% at 50% 46%, rgba(255, 255, 255, .55), rgba(255, 255, 255, 0) 70%); }
.stage__num {
  position: absolute; left: 50%; top: 44%; transform: translate(-50%, -50%);
  font: 200 clamp(120px, 27vw, 520px)/1 var(--f-en); letter-spacing: -.02em; white-space: nowrap;
  color: transparent; -webkit-text-stroke: 1px rgba(11, 10, 9, .11);
  pointer-events: none; display: flex;
}
.stage__num span { display: inline-block; }
.stage__index {
  position: absolute; left: var(--pad); top: 50%; transform: translateY(-50%); z-index: 3;
  display: grid; gap: 2px;
}
.stage__index button {
  display: flex; align-items: center; gap: 12px; padding: 5px 0;
  font: 400 13px/1 var(--f-en); letter-spacing: .12em; color: rgba(11, 10, 9, .42);
  transition: color .4s var(--ease);
}
.stage__index button::before { content: ""; width: 14px; height: 1px; background: currentColor; transition: width .5s var(--ease); }
.stage__index button small { font-family: var(--f-zh); font-size: 12px; letter-spacing: .04em; opacity: 0; transform: translateX(-6px); transition: opacity .4s, transform .4s var(--ease); }
.stage__index button:hover { color: var(--ink); }
.stage__index button.is-active { color: var(--ink); }
.stage__index button.is-active::before { width: 36px; }
.stage__index button.is-active small { opacity: .7; transform: none; }

.stage__center {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 0 clamp(0px, 11vw, 220px) 7vh 0; pointer-events: none;
}
.stage__center > * { pointer-events: auto; }
.stage__product { position: relative; width: min(46vw, 760px); }
.stage__imgwrap { position: relative; aspect-ratio: 2.4 / 1; perspective: 1200px; }
.stage__img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain;
  will-change: transform, opacity, filter;
}
.stage__shadow { position: absolute; left: 12%; right: 12%; bottom: -8%; height: 14%; border-radius: 50%; background: radial-gradient(closest-side, rgba(11, 10, 9, .16), transparent); filter: blur(6px); }
.stage__swatches { margin-top: clamp(20px, 5vh, 56px); display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.swatch {
  display: inline-flex; align-items: center; gap: 10px; height: 44px; padding: 0 16px 0 6px;
  border-radius: 999px; border: 1px solid rgba(11, 10, 9, .14); background: rgba(255, 255, 255, .35);
  font-size: 13px; letter-spacing: .04em; transition: border-color .3s, background .3s;
}
.swatch i { width: 32px; height: 32px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .12), inset -6px -9px 14px rgba(0, 0, 0, .28), inset 5px 6px 10px rgba(255, 255, 255, .22); }
.swatch small { font-size: 11px; opacity: .55; }
.swatch:hover { border-color: rgba(11, 10, 9, .4); }
.swatch.is-active { border-color: var(--ink); background: rgba(255, 255, 255, .7); }

.stage__info {
  position: absolute; right: var(--pad); top: 50%; transform: translateY(-50%); z-index: 3;
  width: min(25vw, 380px);
}
.info__tag { display: inline-block; font-size: 12px; letter-spacing: .12em; color: var(--ember); }
.info__model { margin-top: 12px; font: 300 clamp(40px, 4.4vw, 72px)/1 var(--f-en); letter-spacing: .02em; }
.info__model em { margin-left: 10px; font: 400 16px var(--f-zh); font-style: normal; letter-spacing: .1em; vertical-align: middle; padding: 4px 10px; border-radius: 999px; background: var(--ink); color: var(--bone); }
.info__name { margin-top: 12px; font-size: clamp(18px, 1.5vw, 22px); letter-spacing: .08em; }
.info__sub { margin-top: 10px; font-size: 13px; color: rgba(11, 10, 9, .58); line-height: 1.7; }
.info__specs { margin-top: 24px; border-top: 1px solid var(--line-dark); }
.info__specs div { display: grid; grid-template-columns: 64px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line-dark); font-size: 13px; }
.info__specs dt { color: rgba(11, 10, 9, .5); letter-spacing: .1em; }
.info__specs dd { margin: 0; }
.info__price { margin-top: 20px; display: flex; align-items: baseline; gap: 10px; }
.info__price b { font: 300 32px/1 var(--f-en); }
.info__price b::before { content: "¥"; font-size: 16px; margin-right: 3px; }
.info__price span { font-size: 12px; color: rgba(11, 10, 9, .5); }
.info__actions { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; }
.info__actions .btn { height: 46px; padding: 0 20px; font-size: 14px; }

.stage__counter {
  position: absolute; left: var(--pad); bottom: 34px; z-index: 3;
  display: flex; align-items: center; gap: 14px; font: 400 13px/1 var(--f-en); letter-spacing: .14em;
}
.stage__counter i { position: relative; width: 120px; height: 1px; background: rgba(11, 10, 9, .18); }
.stage__counter i b { position: absolute; inset: 0; background: var(--ink); transform-origin: 0 50%; transform: scaleX(0); }
.stage__hint { position: absolute; right: var(--pad); bottom: 34px; z-index: 3; font-size: 12px; letter-spacing: .2em; color: rgba(11, 10, 9, .45); }

/* ---------- 细节 ---------- */
.craft { position: relative; background: var(--ink); }
.craft__head { padding: clamp(110px, 18vh, 200px) var(--pad) 20px; }
.craft__track { position: relative; }
.craft__pin {
  position: sticky; top: 0; height: 100vh; height: 100svh;
  display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 5vw, 90px); align-items: center;
  padding: 0 var(--pad);
}
.craft__media {
  position: relative; aspect-ratio: 5 / 4; max-height: 78vh; width: 100%;
  border-radius: var(--radius); overflow: hidden; background: #e9e7e3;
}
.craft__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; will-change: clip-path, transform; }
.craft__img--contain { object-fit: contain; background: #fff; }
.craft__badge {
  position: absolute; left: 18px; top: 18px; z-index: 3;
  font: 400 12px/1 var(--f-en); letter-spacing: .16em; color: var(--ink);
  padding: 8px 12px; border-radius: 999px; background: rgba(255, 255, 255, .72); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.craft__loupe {
  position: absolute; z-index: 4; width: 180px; height: 180px; margin: -90px 0 0 -90px; border-radius: 50%;
  pointer-events: none; opacity: 0; transform: scale(.6);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .9), 0 20px 50px rgba(0, 0, 0, .35);
  background-repeat: no-repeat; transition: opacity .3s, transform .4s var(--ease);
}
.craft__media.is-zoom .craft__loupe { opacity: 1; transform: scale(1); }
.craft__steps { display: grid; gap: 4px; }
.step { position: relative; padding: 22px 0 22px 64px; border-top: 1px solid var(--line); cursor: pointer; }
.step:last-child { border-bottom: 1px solid var(--line); }
.step__n { position: absolute; left: 0; top: 24px; font: 300 14px/1 var(--f-en); letter-spacing: .12em; color: var(--dim-2); transition: color .4s; }
.step__t { font-size: clamp(18px, 1.7vw, 26px); letter-spacing: .06em; color: var(--dim-2); transition: color .4s; }
.step__d { max-height: 0; overflow: hidden; opacity: 0; font-size: 14px; line-height: 1.85; color: var(--dim); transition: max-height .6s var(--ease), opacity .5s, margin .5s; }
.step__m { display: inline-block; margin-top: 10px; font: 400 11px/1 var(--f-en); letter-spacing: .18em; color: var(--amber); }
.step.is-active .step__n { color: var(--amber); }
.step.is-active .step__t { color: var(--bone); }
.step.is-active .step__d { max-height: 160px; opacity: 1; margin-top: 12px; }
.craft__bar { position: relative; height: 2px; margin-top: 28px; background: var(--line); }
.craft__bar i { position: absolute; inset: 0; background: var(--amber); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- 佩戴形象 ---------- */
.look { position: relative; padding: clamp(110px, 18vh, 200px) 0 clamp(80px, 14vh, 160px); background: var(--ink); overflow: hidden; }
.look__head { padding: 0 var(--pad); }
.marquee { margin: clamp(50px, 8vh, 90px) 0 clamp(40px, 6vh, 70px); overflow: hidden; white-space: nowrap; }
.marquee__track { display: inline-flex; will-change: transform; }
.marquee__track span { font: 200 clamp(56px, 10vw, 170px)/1.05 var(--f-en); letter-spacing: .02em; padding-right: .3em; color: transparent; -webkit-text-stroke: 1px rgba(236, 232, 225, .38); }
.look__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(10px, 1.3vw, 20px); padding: 0 clamp(10px, 2vw, 32px); }
.look__col { display: grid; gap: clamp(10px, 1.3vw, 20px); align-content: start; will-change: transform; }
.look__col:nth-child(2) { margin-top: 12vh; }
.look__col:nth-child(4) { margin-top: 6vh; }
.shot { position: relative; border-radius: clamp(12px, 1.4vw, 20px); overflow: hidden; background: var(--ink-3); cursor: pointer; }
.shot img, .shot video { width: 100%; height: auto; object-fit: cover; transform: scale(1.06); transition: transform 1.2s var(--ease), filter .6s; }
.shot video { height: 100%; }
.shot:hover img, .shot:hover video { transform: scale(1.12); }
.shot figcaption {
  position: absolute; left: 12px; right: 12px; bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: .1em; color: #fff;
  opacity: 0; transform: translateY(8px); transition: opacity .4s, transform .5s var(--ease);
}
.shot figcaption b { font: 400 13px var(--f-en); letter-spacing: .14em; padding: 6px 10px; border-radius: 999px; background: rgba(11, 10, 9, .55); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.shot:hover figcaption { opacity: 1; transform: none; }
.shot--video::after { content: "● LIVE"; position: absolute; top: 12px; left: 12px; font: 500 10px/1 var(--f-en); letter-spacing: .2em; color: #fff; padding: 6px 9px; border-radius: 999px; background: var(--douyin); }

/* ---------- 佩戴体验 ---------- */
.comfort { background: var(--bone); color: var(--ink); padding: clamp(110px, 18vh, 200px) var(--pad); }
.comfort__inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(40px, 7vw, 120px); align-items: start; }
.comfort__note { margin-top: 26px; max-width: 30em; font-size: 15px; line-height: 1.9; color: rgba(11, 10, 9, .62); }
.weigh { max-width: 460px; margin-top: clamp(24px, 4vh, 44px); }
.balance3d { position: relative; aspect-ratio: 1.5; cursor: pointer; touch-action: pan-y; }
.balance3d canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  /* 顶部渐隐：硬币从画面上方淡入落下 */
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 16%);
  mask-image: linear-gradient(to bottom, transparent, #000 16%);
}
.balance { display: none; position: relative; margin-top: clamp(40px, 8vh, 80px); height: clamp(260px, 30vw, 380px); }
.no-3d .balance { display: block; }
.no-3d .balance3d { display: none; }
.balance__beam { position: absolute; left: 6%; right: 6%; top: 34%; height: 2px; background: var(--ink); transform-origin: 50% 50%; }
.balance__beam::before { content: ""; position: absolute; left: 50%; top: -7px; width: 16px; height: 16px; margin-left: -8px; border-radius: 50%; background: var(--ink); }
.balance__pan { position: absolute; bottom: 2px; width: 42%; display: flex; justify-content: center; align-items: flex-end; transform-origin: 50% 100%; }
.balance__pan::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; border-radius: 2px; background: rgba(11, 10, 9, .35); }
.balance__pan--l { left: 0; }
.balance__pan--r { right: 0; gap: 0; height: 60px; }
.balance__pan--l img { width: 100%; transform: translateY(8%); }
.coin {
  width: clamp(44px, 5vw, 64px); aspect-ratio: 1; margin: 0 -6px; border-radius: 50%;
  display: grid; place-items: center; font: 300 clamp(18px, 2vw, 26px)/1 var(--f-en); color: rgba(11, 10, 9, .55);
  background: radial-gradient(circle at 35% 30%, #f7f7f5, #c9c9c6 55%, #9c9c98);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .6), inset 0 0 0 5px rgba(0, 0, 0, .08), 0 6px 14px rgba(0, 0, 0, .18);
}
.balance__post { position: absolute; left: 50%; top: 34%; bottom: 14%; width: 2px; margin-left: -1px; background: var(--ink); }
.balance__post::after { content: ""; position: absolute; left: 50%; bottom: -1px; width: 120px; height: 2px; margin-left: -60px; background: var(--ink); }
.balance__readout { margin-top: 6px; text-align: center; font: 300 18px/1 var(--f-en); letter-spacing: .08em; color: rgba(11, 10, 9, .7); }
.balance__readout b { font-weight: 400; color: var(--ink); }
.balance__cmp { display: inline-block; min-width: 1.2em; margin: 0 12px; color: var(--ember); }
.promise__title { font-weight: 300; font-size: clamp(26px, 2.6vw, 40px); line-height: 1.35; }
.promise { margin-top: 34px; border-top: 1px solid var(--line-dark); }
.promise li { border-bottom: 1px solid var(--line-dark); }
.promise button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; text-align: left; font-size: clamp(15px, 1.2vw, 18px); letter-spacing: .04em; }
.promise button i { flex: none; width: 28px; height: 28px; border-radius: 50%; border: 1px solid rgba(11, 10, 9, .25); position: relative; transition: transform .5s var(--ease), background .3s; }
.promise button i::before, .promise button i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 1px; margin: -.5px 0 0 -5px; background: var(--ink); }
.promise button i::after { transform: rotate(90deg); transition: transform .4s var(--ease); }
.promise li.is-open button i { background: var(--ink); }
.promise li.is-open button i::before, .promise li.is-open button i::after { background: var(--bone); }
.promise li.is-open button i::after { transform: rotate(0); }
.promise__a { height: 0; overflow: hidden; }
.promise__a p { padding: 0 44px 22px 0; font-size: 15px; line-height: 1.85; color: rgba(11, 10, 9, .7); }
.promise__a small { display: inline-block; margin-left: 8px; font: 400 11px/1 var(--f-en); letter-spacing: .14em; color: var(--ember); }
.scenes { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 8px; }
.scenes span { padding: 9px 16px; border-radius: 999px; border: 1px solid rgba(11, 10, 9, .18); font-size: 13px; letter-spacing: .1em; }

/* ---------- 购买 ---------- */
.buy { position: relative; padding: clamp(110px, 18vh, 200px) var(--pad) clamp(90px, 14vh, 160px); background: radial-gradient(90% 60% at 80% 0%, rgba(233, 161, 74, .12), transparent 60%), var(--ink); }
.buy__head { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: end; }
.buy__head .eyebrow { grid-column: 1 / -1; }
.buy__head .h2 { margin-top: 0; }
.buy__lead { max-width: 28em; color: var(--dim); line-height: 1.9; }
.buy__grid { margin-top: clamp(50px, 8vh, 90px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(14px, 2vw, 28px); }
.channel {
  position: relative; overflow: hidden;
  padding: clamp(24px, 3vw, 44px); border-radius: var(--radius);
  background: linear-gradient(160deg, #1b1815, #110f0d); border: 1px solid var(--line);
  transform-style: preserve-3d; will-change: transform;
}
.channel::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; opacity: .55; }
.channel--douyin::before { background: radial-gradient(60% 50% at 0% 0%, rgba(37, 244, 238, .14), transparent 70%), radial-gradient(60% 50% at 100% 100%, rgba(254, 44, 85, .16), transparent 70%); }
.channel--tmall::before { background: radial-gradient(70% 60% at 100% 0%, rgba(255, 80, 0, .2), transparent 70%); }
.channel__head { position: relative; display: flex; gap: 16px; align-items: center; }
.channel__head h3 { font-size: clamp(20px, 1.8vw, 26px); font-weight: 400; letter-spacing: .06em; }
.channel__head p { margin-top: 4px; font-size: 13px; color: var(--dim); letter-spacing: .04em; }
.channel__logo { flex: none; width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; }
.channel__logo--douyin { background: #000; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12); }
.channel__logo--douyin::before { content: "♪"; font-size: 30px; font-weight: 700; color: #fff; text-shadow: -2px -2px 0 var(--douyin-2), 2px 2px 0 var(--douyin); }
.channel__logo--tmall { background: var(--tmall); color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .06em; }
.channel__body { position: relative; margin-top: 30px; display: grid; grid-template-columns: auto 1fr; gap: clamp(18px, 2.4vw, 36px); align-items: start; }
.channel__qr { display: grid; justify-items: center; gap: 12px; font-size: 12px; letter-spacing: .1em; color: var(--dim); }
.channel__qr img { width: 148px; height: 148px; padding: 12px; border-radius: 16px; background: var(--bone); }
.channel__accounts { display: grid; gap: 10px; }
.acct { display: grid; gap: 6px; padding: 14px 16px; border-radius: 14px; background: rgba(236, 232, 225, .04); border: 1px solid var(--line); transition: border-color .3s, background .3s; }
.acct:hover { border-color: var(--dim-2); background: rgba(236, 232, 225, .07); }
.acct__name { font-size: 15px; letter-spacing: .04em; }
.acct__name small { display: inline-block; margin-left: 10px; padding: 3px 8px; border-radius: 999px; font-size: 11px; line-height: 1.3; white-space: nowrap; vertical-align: 2px; color: var(--douyin-2); background: rgba(37, 244, 238, .08); letter-spacing: .06em; }
.acct__meta { font-size: 12px; color: var(--dim); letter-spacing: .04em; }
.acct__meta b { font: 400 12px var(--f-en); letter-spacing: .08em; color: var(--bone); }
.acct__btns { margin-top: 6px; display: flex; gap: 6px; }
.acct__btns a, .acct__btns button { height: 34px; padding: 0 12px; border-radius: 999px; font-size: 12px; letter-spacing: .06em; display: inline-flex; align-items: center; border: 1px solid var(--line); transition: background .3s, color .3s; }
.acct__btns a { background: var(--bone); color: var(--ink); border-color: var(--bone); }
.acct__btns a:hover { background: #fff; }
.acct__btns button:hover { border-color: var(--bone); }
.channel__left { display: grid; gap: 22px; justify-items: center; align-content: start; }
.channel__video { position: relative; width: 148px; aspect-ratio: 3 / 4; border-radius: 16px; overflow: hidden; box-shadow: 0 16px 40px rgba(0, 0, 0, .45); transform: translateZ(30px); }
.channel__video video { width: 100%; height: 100%; object-fit: cover; }
.channel__video figcaption { left: 8px; bottom: 8px; font-size: 10px; padding: 4px 8px; }
.channel__side { display: grid; gap: 22px; }
.channel--tmall { display: flex; flex-direction: column; }
.channel__banner { position: relative; flex: 1; min-height: 200px; margin-top: 30px; border-radius: 16px; overflow: hidden; display: block; }
.channel__banner img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 28%; transition: transform 1.2s var(--ease); }
.channel__banner:hover img { transform: scale(1.04); }
.channel__banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(11, 10, 9, .55), rgba(11, 10, 9, 0) 55%); }
.channel__banner span { position: absolute; left: 16px; bottom: 14px; z-index: 1; font-size: 13px; letter-spacing: .08em; color: #fff; }
.channel__perks { display: flex; flex-wrap: wrap; gap: 8px; }
.channel--jd::before { background: radial-gradient(70% 60% at 100% 0%, rgba(225, 37, 27, .2), transparent 70%); }
.channel--xhs::before { background: radial-gradient(70% 60% at 100% 0%, rgba(255, 36, 66, .2), transparent 70%); }
.channel__logo--jd { background: var(--jd); color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .06em; }
.channel__logo--xhs { background: var(--xhs); color: #fff; font-size: 12px; font-weight: 600; letter-spacing: .02em; }
.channel--jd .channel__perks li { color: #ffd3cf; background: rgba(225, 37, 27, .12); border-color: rgba(225, 37, 27, .3); }
.channel--xhs .channel__perks li { color: #ffd2d9; background: rgba(255, 36, 66, .12); border-color: rgba(255, 36, 66, .3); }
.btn--jd { background: var(--jd); color: #fff; }
.btn--jd:hover { background: #f03a30; }
.btn--xhs { background: var(--xhs); color: #fff; }
.btn--xhs:hover { background: #ff4461; }
.channel__perks li { padding: 8px 12px; border-radius: 999px; font-size: 12px; letter-spacing: .06em; color: #ffd9c5; background: rgba(255, 80, 0, .12); border: 1px solid rgba(255, 80, 0, .25); }
.channel__actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- 页脚 ---------- */
.footer { position: relative; padding: 0 var(--pad) 40px; background: var(--ink); overflow: hidden; }
.footer__big { font: 200 clamp(90px, 30vw, 560px)/.8 var(--f-en); letter-spacing: .04em; color: transparent; -webkit-text-stroke: 1px rgba(236, 232, 225, .2); text-align: center; white-space: nowrap; transform: translateY(8%); }
.footer__big span { display: inline-block; }
.footer__row { display: grid; grid-template-columns: auto 1fr auto; gap: 40px; align-items: end; padding-top: 34px; border-top: 1px solid var(--line); }
.footer__brand { display: flex; gap: 14px; align-items: center; font-size: 15px; letter-spacing: .1em; }
.footer__brand span { font-size: 12px; color: var(--dim); letter-spacing: .06em; }
.footer__mark { width: 40px; height: 40px; color: var(--bone); }
.footer__note { max-width: 44em; font-size: 12px; line-height: 1.8; color: var(--dim-2); }
.footer__copy { font: 400 12px var(--f-en); letter-spacing: .14em; color: var(--dim); text-align: right; }
.footer__beian { display: grid; gap: 6px; margin-top: 8px; font-family: var(--f-zh); letter-spacing: .04em; }
.footer__beian:empty { display: none; }
.footer__beian a { color: var(--dim); transition: color .3s; }
.footer__beian a:hover { color: var(--bone); }

/* ---------- 移动端购买条 ---------- */
.dock { display: none; }

/* ---------- 抽屉 ---------- */
.drawer { position: fixed; inset: 0; z-index: 140; pointer-events: none; }
.drawer__scrim { position: absolute; inset: 0; background: rgba(11, 10, 9, .6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; }
.drawer__panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(620px, 100vw);
  background: var(--bone); color: var(--ink); overflow-y: auto; overscroll-behavior: contain;
  visibility: hidden;
}
.drawer.is-open .drawer__panel { visibility: visible; }
.drawer.is-open { pointer-events: auto; }
.drawer__bar { position: sticky; top: 0; height: 0; z-index: 5; }
.drawer__close { position: absolute; top: 16px; right: 16px; width: 46px; height: 46px; border-radius: 50%; background: var(--ink); color: var(--bone); font-size: 26px; line-height: 1; box-shadow: 0 6px 18px rgba(0, 0, 0, .18); }
.drawer__content { padding: 0 0 60px; }
.dr__media { position: relative; margin: 76px 24px 0; border-radius: 18px; overflow: hidden; background: #f4f3f1; }
.dr__gallery { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; overscroll-behavior-x: contain; outline: none; }
.dr__gallery::-webkit-scrollbar { display: none; }
.dr__gallery figure { flex: 0 0 100%; aspect-ratio: 1; scroll-snap-align: start; scroll-snap-stop: always; display: grid; place-items: center; background: #f4f3f1; }
.dr__gallery img { width: 100%; height: 100%; object-fit: cover; }
.dr__gallery figure.is-detail { background: #fff; }
.dr__gallery figure.is-detail img { object-fit: contain; }
.dr__gallery figure.is-cut { background: var(--bone-2); }
.dr__gallery figure.is-cut img { width: 88%; height: auto; object-fit: contain; }
.dr__nav {
  position: absolute; top: 50%; width: 42px; height: 42px; margin-top: -21px; border-radius: 50%;
  display: grid; place-items: center; font: 300 28px/1 var(--f-en); color: var(--ink);
  background: rgba(255, 255, 255, .78); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, .12); transition: opacity .3s, background .3s;
}
.dr__nav:hover { background: #fff; }
.dr__nav:disabled { opacity: 0; pointer-events: none; }
.dr__nav--prev { left: 12px; }
.dr__nav--next { right: 12px; }
.dr__count { position: absolute; right: 12px; bottom: 12px; padding: 5px 11px; border-radius: 999px; font: 400 12px/1.2 var(--f-en); letter-spacing: .1em; color: #fff; background: rgba(11, 10, 9, .5); }
.dr__count b { font-weight: 500; }
.dr__thumbs { display: flex; gap: 8px; overflow-x: auto; padding: 12px 24px 2px; scrollbar-width: none; }
.dr__thumbs::-webkit-scrollbar { display: none; }
.dr__thumbs button { flex: none; width: 58px; height: 58px; border-radius: 10px; overflow: hidden; background: #f4f3f1; border: 2px solid transparent; opacity: .6; transition: opacity .3s, border-color .3s; }
.dr__thumbs button:hover { opacity: .9; }
.dr__thumbs button.is-active { border-color: var(--ink); opacity: 1; }
.dr__thumbs img { width: 100%; height: 100%; object-fit: cover; }
.dr__thumbs .is-cut { background: var(--bone-2); }
.dr__thumbs .is-detail { background: #fff; }
.dr__thumbs .is-cut img, .dr__thumbs .is-detail img { object-fit: contain; }
.dr__body { padding: 20px 28px 0; }
.dr__tag { font-size: 12px; letter-spacing: .12em; color: var(--ember); }
.dr__title { margin-top: 10px; font: 300 44px/1 var(--f-en); }
.dr__title span { margin-left: 12px; font: 400 18px var(--f-zh); letter-spacing: .08em; }
.dr__sub { margin-top: 12px; font-size: 14px; color: rgba(11, 10, 9, .6); }
.dr__intro { margin-top: 18px; font-size: 15px; line-height: 1.9; }
.dr__h { margin-top: 34px; font: 400 12px/1 var(--f-en); letter-spacing: .24em; color: rgba(11, 10, 9, .5); }
.dr__colors { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.dr__colors span { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; border-radius: 999px; border: 1px solid var(--line-dark); font-size: 13px; }
.dr__colors i { width: 22px; height: 22px; border-radius: 50%; box-shadow: inset -4px -5px 8px rgba(0, 0, 0, .3); }
.dr__specs { margin-top: 14px; border-top: 1px solid var(--line-dark); }
.dr__specs div { display: grid; grid-template-columns: 96px 1fr; padding: 11px 0; border-bottom: 1px solid var(--line-dark); font-size: 14px; }
.dr__specs dt { color: rgba(11, 10, 9, .5); }
.dr__specs dd { margin: 0; }
.dr__size { margin-top: 14px; border-radius: 16px; overflow: hidden; background: #fff; }
.dr__size img { width: 100%; height: auto; }
.dr__feat { margin-top: 14px; display: grid; gap: 10px; }
.dr__feat li { padding: 16px 18px; border-radius: 14px; background: #f3f1ed; }
.dr__feat b { display: block; font-weight: 500; font-size: 15px; letter-spacing: .04em; }
.dr__feat p { margin-top: 6px; font-size: 13px; line-height: 1.8; color: rgba(11, 10, 9, .66); }
.dr__actions { position: sticky; bottom: 0; margin-top: 30px; padding: 16px 28px 20px; display: flex; gap: 10px; background: linear-gradient(transparent, var(--bone) 30%); }
.dr__actions .btn { flex: 1; justify-content: center; }
.dr__price { margin-top: 18px; display: flex; gap: 10px; align-items: baseline; }
.dr__price b { font: 300 30px/1 var(--f-en); }
.dr__price b::before { content: "¥"; font-size: 15px; margin-right: 2px; }
.dr__price span { font-size: 12px; color: rgba(11, 10, 9, .5); }

/* ---------- 立即购买弹窗 ---------- */
.qrbuy { position: fixed; inset: 0; z-index: 145; display: grid; place-items: center; padding: 20px; pointer-events: none; visibility: hidden; }
.qrbuy.is-open { pointer-events: auto; visibility: visible; }
.qrbuy__scrim { position: absolute; inset: 0; background: rgba(11, 10, 9, .66); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); opacity: 0; }
.qrbuy__panel {
  position: relative; width: min(600px, 100%); max-height: calc(100vh - 40px); overflow-y: auto;
  padding: 34px 32px 26px; border-radius: 24px; background: var(--bone); color: var(--ink);
  box-shadow: 0 40px 100px rgba(0, 0, 0, .45);
}
.qrbuy__close { position: absolute; top: 14px; right: 14px; width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: var(--bone); font-size: 22px; line-height: 1; }
.qrbuy__eyebrow { font: 400 11px/1 var(--f-en); letter-spacing: .26em; color: rgba(11, 10, 9, .5); }
.qrbuy__title { margin-top: 12px; font: 300 40px/1 var(--f-en); }
.qrbuy__title span { margin-left: 12px; font: 400 16px var(--f-zh); letter-spacing: .08em; }
.qrbuy__grid { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.qrbuy__card { display: grid; gap: 14px; padding: 18px; border-radius: 18px; background: #f6f4f0; }
.qrbuy__code { aspect-ratio: 1; padding: 10px; border-radius: 12px; background: #fff; box-shadow: inset 0 0 0 1px var(--line-dark); }
.qrbuy__code svg, .qrbuy__code img { display: block; width: 100%; height: 100%; }
.qrbuy__code.is-img { padding: 4px; }
.qrbuy__card figcaption { display: grid; gap: 6px; font-size: 13px; line-height: 1.6; color: rgba(11, 10, 9, .66); }
.qrbuy__card b { display: flex; align-items: center; gap: 8px; font-weight: 500; font-size: 16px; letter-spacing: .06em; color: var(--ink); }
.qrbuy__card b i { width: 10px; height: 10px; border-radius: 50%; }
.qrbuy__card.is-douyin b i { background: var(--douyin); box-shadow: -3px -2px 0 var(--douyin-2); }
.qrbuy__card.is-tmall b i { background: var(--tmall); }
.qrbuy__card em { justify-self: start; padding: 3px 10px; border-radius: 999px; font-style: normal; font-size: 12px; letter-spacing: .06em; color: #fff; background: var(--ink); }
.qrbuy__links { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 12px; letter-spacing: .04em; }
.qrbuy__links a, .qrbuy__links button { color: var(--ink); border-bottom: 1px solid rgba(11, 10, 9, .3); padding-bottom: 1px; }
.qrbuy__links a:hover, .qrbuy__links button:hover { border-color: var(--ink); }
.qrbuy__note { margin-top: 18px; font-size: 12px; color: rgba(11, 10, 9, .45); text-align: center; }
@media (max-width: 560px) {
  .qrbuy { padding: 12px; }
  .qrbuy__panel { padding: 28px 18px 20px; }
  .qrbuy__title { font-size: 32px; }
  .qrbuy__grid { gap: 10px; }
  .qrbuy__card { padding: 12px; gap: 10px; }
  .qrbuy__card figcaption { font-size: 12px; }
}

/* ---------- 提示 ---------- */
.toast {
  position: fixed; left: 50%; bottom: 32px; z-index: 160; transform: translate(-50%, 30px);
  padding: 14px 22px; border-radius: 999px; background: var(--bone); color: var(--ink);
  font-size: 14px; letter-spacing: .04em; box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
  opacity: 0; pointer-events: none; transition: opacity .4s, transform .5s var(--ease);
  max-width: calc(100vw - 40px); text-align: center;
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .nav__links { display: none; }
  .stage__index { display: none; }
  .stage__center { justify-content: flex-start; padding: 17vh 0 0; }
  .stage__product { width: min(84vw, 720px); }
  .stage__info { left: var(--pad); right: var(--pad); top: auto; bottom: 74px; transform: none; width: auto; display: grid; grid-template-columns: 1fr auto; column-gap: 20px; }
  .stage__info .info__specs { display: none; }
  .stage__info .info__sub { display: none; }
  .stage__info .info__price, .stage__info .info__actions { grid-column: 1 / -1; }
  .stage__swatches { margin-top: 18px; }
  .stage__num { top: 32%; }
  .craft__pin { grid-template-columns: 1fr; align-content: center; gap: 22px; }
  .craft__media { aspect-ratio: 16 / 11; max-height: 44vh; }
  .step { padding: 14px 0 14px 48px; }
  .step__n { top: 16px; }
  .step.is-active .step__d { margin-top: 8px; }
  .comfort__inner { grid-template-columns: 1fr; }
  .buy__grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  body { font-size: 15px; }
  .nav { padding: 14px 18px; }
  .nav__cta { display: none; }
  .nav__word { font-size: 15px; letter-spacing: .36em; }
  .hero { height: 260vh; }
  .hero__word { top: 26%; font-size: 27vw; }
  .hero__lensbar { left: var(--pad); right: var(--pad); bottom: 24px; justify-items: start; }
  .hero__lensbar p span { display: none; }
  .hero__scroll { display: none; }
  .hero__corner { top: 74px; font-size: 10px; letter-spacing: .2em; }
  .hero__corner--tr { display: none; }
  .hero__copy { bottom: 110px; }
  .hero__kicker { flex-direction: column; gap: 10px; }
  .about__founder { grid-template-columns: 1fr; }
  .about__video { width: 72%; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats li { padding: 26px 12px 26px 0; border-bottom: 1px solid var(--line); }
  .stats li:nth-child(2) { border-right: 0; }
  .stats li:nth-child(3) { padding-left: 0; }
  .polar__head, .buy__head, .models__head { grid-template-columns: 1fr; }
  .models__filter { justify-content: flex-start; }
  .polar__stage { height: 70vh; min-height: 420px; }
  .polar__ui { grid-template-columns: 1fr; }
  .polar__clip { display: none; }
  .polar__hint { display: none; }
  .chip { height: 40px; font-size: 13px; }
  .stage__center { padding-top: 21vh; }
  .stage__product { width: 88vw; }
  .stage__info { bottom: calc(96px + env(safe-area-inset-bottom)); grid-template-columns: 1fr; }
  .info__model { font-size: 38px; }
  .info__name { margin-top: 6px; font-size: 16px; }
  .stage__info .info__sub { display: block; margin-top: 6px; font-size: 12px; }
  .info__price { margin-top: 10px; }
  .info__price b { font-size: 24px; }
  .info__actions { margin-top: 12px; }
  .info__actions .btn { height: 40px; padding: 0 14px; font-size: 13px; }
  .stage__swatches { gap: 6px; }
  .swatch { height: 36px; padding: 0 12px 0 4px; font-size: 12px; }
  .swatch i { width: 26px; height: 26px; }
  .swatch small { display: none; }
  .stage__counter { top: 76px; bottom: auto; left: auto; right: var(--pad); }
  .stage__counter i { width: 70px; }
  .stage__hint { display: none; }
  .look__grid { grid-template-columns: 1fr 1fr; }
  .look__col:nth-child(n+3) { display: none; }
  .channel__body { grid-template-columns: 1fr; }
  .channel__left { grid-template-columns: auto auto; justify-content: start; align-items: start; }
  .channel__video { width: 110px; }
  .footer__row { grid-template-columns: 1fr; gap: 18px; padding-bottom: 80px; }
  .footer__copy { text-align: left; }
  .dock {
    position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 95;
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px; border-radius: 999px;
    background: rgba(20, 18, 16, .78); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--line); transform: translateY(140%); transition: transform .6s var(--ease);
  }
  .dock.is-show { transform: none; }
  .dock__btn { height: 46px; border-radius: 999px; display: grid; place-items: center; font-size: 14px; letter-spacing: .08em; }
  .dock__btn--douyin { background: var(--bone); color: var(--ink); }
  .dock__btn--tmall { background: var(--tmall); color: #fff; }
  .toast { bottom: 92px; }
  .dr__media { margin: 72px 16px 0; }
  .dr__thumbs { padding: 10px 16px 2px; }
  .dr__nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
  .hero__scroll i::after { animation: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}