@font-face {
  font-family: "Xunz Noto Serif SC";
  src: url("./assets/fonts/NotoSerifSC-VF.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
}

:root {
  --black: #020916;
  --black-soft: #061426;
  --paper: #edf7ff;
  --muted: rgba(216, 236, 250, .6);
  --faint: rgba(194, 223, 243, .34);
  --line: rgba(105, 191, 239, .18);
  --steel: #71cdfd;
  --tungsten: #78a8ca;
  --accent-gold: #d6a16d;
  --font-display-cn: "Xunz Noto Serif SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --font-editorial-cn: "Xunz Noto Serif SC", "Noto Serif SC", "STSong", "SimSun", Georgia, serif;
  --font-display-latin: "Bodoni 72", "Bodoni MT", Didot, Georgia, serif;
  --ease-film: cubic-bezier(.16, 1, .3, 1);
  --mx: 50vw;
  --my: 50vh;
  --hero-x: 0px;
  --hero-y: 0px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body { margin: 0; color: var(--paper); background: var(--black); font-family: "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif; overflow-x: hidden; }
body.is-loading { overflow: hidden; }
button, a { color: inherit; font: inherit; }
a { text-decoration: none; }
button { border: 0; }
img { display: block; max-width: 100%; }
::selection { color: #080808; background: var(--paper); }

.skip-link { position: fixed; top: 16px; left: 16px; z-index: 200; padding: 10px 14px; color: #000; background: #fff; transform: translateY(-160%); transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }

.film-grain { position: fixed; inset: -70%; z-index: 90; pointer-events: none; opacity: .095; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); animation: grain .18s steps(2) infinite; mix-blend-mode: soft-light; }
.letterbox { position: fixed; left: 0; right: 0; z-index: 100; height: 7px; background: #000; pointer-events: none; }
.letterbox-top { top: 0; }
.letterbox-bottom { bottom: 0; }
.scroll-line { position: fixed; top: 7px; left: 0; z-index: 110; width: 100%; height: 2px; background: var(--paper); transform: scaleX(0); transform-origin: left; }
.cursor-light { position: fixed; left: var(--mx); top: var(--my); z-index: 4; width: 34rem; height: 34rem; border-radius: 50%; transform: translate(-50%, -50%); background: radial-gradient(circle, rgba(151, 188, 201, .07), transparent 68%); pointer-events: none; }

.film-intro { position: fixed; inset: 0; z-index: 180; display: grid; place-content: center; justify-items: center; gap: 13px; color: #e2f2ff; background: #010813; letter-spacing: .2em; transition: opacity .8s ease, visibility .8s ease; }
.film-intro::after { content: ""; position: absolute; inset: 0; background: linear-gradient(transparent 49.7%, rgba(255,255,255,.05) 50%, transparent 50.3%); animation: introScan 1.1s linear infinite; }
.film-intro p, .film-intro strong, .film-intro small { position: relative; z-index: 1; margin: 0; }
.film-intro p { font-family: Georgia, serif; font-size: 24px; letter-spacing: .34em; }
.film-intro strong { font-size: 11px; font-weight: 400; color: rgba(255,255,255,.5); }
.film-intro small { margin-top: 22px; font-size: 9px; color: rgba(255,255,255,.28); }
.intro-rule { width: 1px; height: 64px; background: linear-gradient(transparent, #d8d3c8); margin-bottom: 17px; }
.film-intro.done { opacity: 0; visibility: hidden; }

.site-header { position: fixed; top: 7px; left: 0; right: 0; z-index: 80; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 88px; padding: 0 4.5vw; border-bottom: 1px solid transparent; transition: height .5s var(--ease-film), background .5s, border-color .5s; }
.site-header.compact { height: 68px; background: rgba(2,9,22,.86); border-bottom-color: var(--line); backdrop-filter: blur(16px); }
.brand { width: max-content; height: 40px; display: flex; align-items: center; gap: 10px; }
.brand img, .footer-brand img { width: 36px; height: 36px; object-fit: contain; filter: brightness(0) invert(1); opacity: .86; }
.brand-wordmark, .footer-brand span { display: grid; gap: 1px; }
.brand-wordmark strong, .footer-brand strong { font-size: 16px; letter-spacing: .08em; }
.brand-wordmark small, .footer-brand small { font-family: Georgia, serif; font-size: 7px; letter-spacing: .09em; color: rgba(255,255,255,.5); }
.main-nav { display: flex; align-items: center; gap: 42px; }
.main-nav a, .contact-link { position: relative; font-size: 13px; letter-spacing: .08em; color: rgba(255,255,255,.66); }
.main-nav span { margin-right: 8px; font-family: Georgia, serif; font-size: 10px; color: rgba(255,255,255,.3); }
.main-nav a::after, .contact-link::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 1px; background: currentColor; transition: right .45s var(--ease-film); }
.main-nav a:hover::after, .main-nav a:focus-visible::after, .contact-link:hover::after, .contact-link:focus-visible::after { right: 0; }
.contact-link { justify-self: end; color: rgba(255,255,255,.82); }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 18px; }
.language-switcher { position: relative; width: 116px; height: 34px; display: grid; grid-template-columns: auto 1fr 30px; align-items: center; border: 1px solid rgba(145,203,235,.28); background: rgba(6,22,41,.54); color: rgba(226,241,250,.8); backdrop-filter: blur(12px); }
.language-symbol { padding-left: 10px; font-family: var(--font-display-cn); font-size: 14px; color: #9ad7f7; }
.language-label { padding-left: 8px; font-family: Georgia, "Times New Roman", serif; font-size: 10px; letter-spacing: .1em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.language-toggle { position: relative; width: 30px; height: 32px; display: grid; place-items: center; padding: 0; border-left: 1px solid rgba(145,203,235,.2); background: transparent; cursor: pointer; }
.language-toggle i { width: 6px; height: 6px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: translateY(-2px) rotate(45deg); transition: transform .28s var(--ease-film); }
.language-switcher.open .language-toggle i { transform: translateY(2px) rotate(225deg); }
.language-switcher:focus-within { border-color: rgba(158,218,250,.62); box-shadow: 0 0 0 3px rgba(92,181,232,.08); }
.language-menu { position: absolute; z-index: 20; top: calc(100% + 9px); right: -1px; width: 176px; padding: 6px; display: grid; gap: 2px; border: 1px solid rgba(145,203,235,.3); background: rgba(3,14,29,.96); box-shadow: 0 18px 46px rgba(0,0,0,.46); backdrop-filter: blur(18px); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-7px); transition: opacity .24s ease, visibility .24s ease, transform .32s var(--ease-film); }
.language-switcher.open .language-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.language-menu button { min-height: 38px; padding: 0 11px; display: grid; grid-template-columns: 1fr auto; align-items: center; color: rgba(223,237,246,.68); background: transparent; font-family: Georgia, "Times New Roman", serif; text-align: left; cursor: pointer; transition: color .2s, background .2s; }
.language-menu button:hover, .language-menu button:focus-visible { color: #f4f9fc; background: rgba(101,181,226,.11); outline: none; }
.language-menu button[aria-selected="true"] { color: #c7ebff; background: rgba(101,181,226,.16); }
.language-menu span { font-size: 12px; letter-spacing: .06em; }
.language-menu small { font-size: 9px; letter-spacing: .16em; color: rgba(147,205,237,.58); }

.hero { position: relative; height: 100svh; min-height: 720px; overflow: hidden; background: radial-gradient(circle at 72% 40%, #10335a 0%, #071c36 31%, #020b18 68%, #010610 100%); isolation: isolate; }
.hero-media { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-media::before { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg, rgba(1,7,17,.96) 0%, rgba(2,12,27,.55) 43%, rgba(3,18,38,.16) 69%, rgba(1,8,19,.64) 100%); }
.hero-media::after { content: ""; position: absolute; inset: 0; z-index: 3; pointer-events: none; background: linear-gradient(180deg, rgba(1,7,16,.58), transparent 23%, transparent 67%, #020916 100%); }
.hero-particles { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; opacity: .88; pointer-events: none; }
.hero-aura { position: absolute; top: 7%; right: -7%; width: 74vw; height: 74vw; border-radius: 50%; background: radial-gradient(circle, rgba(56,153,224,.24), rgba(16,72,126,.09) 34%, transparent 69%); filter: blur(14px); }
.hero-product-stage { position: absolute; z-index: 2; top: auto; right: -4vw; bottom: 3%; width: min(68vw, 1220px); height: 71%; outline: none; cursor: grab; touch-action: pan-y; user-select: none; perspective: 1400px; perspective-origin: 62% 46%; --hero-rx: 0deg; --hero-ry: 0deg; }
.hero-product-stage.dragging { cursor: grabbing; }
.hero-product-stage:focus-visible { box-shadow: inset 0 0 0 1px rgba(188,215,223,.5); }
.hero-product-assembly { position: absolute; inset: 0; transform-style: preserve-3d; transform: translate3d(var(--hero-x), var(--hero-y), 0) rotateX(var(--hero-rx)) rotateY(var(--hero-ry)) scale(.98); transform-origin: 61% 53%; transition: transform .18s ease-out, opacity .42s ease, filter .42s ease; will-change: transform; }
.hero-product-assembly img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: right center; pointer-events: none; transform-origin: right center; scale: var(--device-scale, 1); }
.hero-product-depth { opacity: .19; filter: grayscale(1) sepia(1) saturate(2) hue-rotate(158deg) brightness(.68) contrast(1.3) blur(2px) drop-shadow(18px 30px 42px rgba(25,127,211,.34)); transform: translate3d(18px, 20px, -54px) scale(1.025); transition: opacity 1.1s ease, transform 1.1s var(--ease-film), scale 1.1s var(--ease-film); }
.hero-product-static { opacity: .23; filter: grayscale(1) sepia(.9) saturate(1.8) hue-rotate(158deg) brightness(.7) contrast(1.27); transform: translateZ(-12px); transition: opacity 1.1s ease, transform 1.1s var(--ease-film), scale 1.1s var(--ease-film); }
.hero-product-draw { z-index: 3; opacity: .86; filter: grayscale(1) sepia(.8) saturate(1.8) hue-rotate(158deg) brightness(1.08) contrast(1.24) drop-shadow(0 0 14px rgba(89,187,255,.24)); transform: translateZ(34px); transition: opacity 1.1s ease, transform 1.1s var(--ease-film), scale 1.1s var(--ease-film); }
.hero-product-next { z-index: 4; opacity: 0; filter: grayscale(1) sepia(.8) saturate(1.8) hue-rotate(158deg) brightness(1.08) contrast(1.24) blur(3px) drop-shadow(0 0 14px rgba(89,187,255,.24)); transform: translate3d(26px, 7px, 42px) scale(1.018); transition: opacity 1.1s ease, transform 1.1s var(--ease-film), filter 1.1s ease, scale 1.1s var(--ease-film); will-change: opacity, transform, filter, scale; }
.hero-product-stage.switching .hero-product-depth { opacity: .08; transform: translate3d(2px, 22px, -54px) scale(1.018); }
.hero-product-stage.switching .hero-product-static { opacity: .08; transform: translate3d(-10px, 0, -12px); }
.hero-product-stage.switching .hero-product-draw { opacity: .13; transform: translate3d(-22px, -2px, 34px) scale(.99); }
.hero-product-stage.switching .hero-product-next { opacity: .86; filter: grayscale(1) sepia(.8) saturate(1.8) hue-rotate(158deg) brightness(1.08) contrast(1.24) blur(0) drop-shadow(0 0 14px rgba(89,187,255,.24)); transform: translate3d(0, 0, 34px) scale(1); }
.hero-vignette { position: absolute; inset: 0; z-index: 3; box-shadow: inset 0 0 16vw 5vw rgba(0,5,15,.94); pointer-events: none; }
.hero-topline { position: absolute; top: 123px; left: 4.5vw; right: 4.5vw; z-index: 4; display: flex; justify-content: space-between; font-family: Georgia, serif; font-size: 10px; letter-spacing: .28em; color: rgba(255,255,255,.38); }
.hero-copy { position: absolute; z-index: 4; top: clamp(155px, 22vh, 235px); left: 5vw; bottom: auto; width: min(620px, 52vw); pointer-events: none; }
.chapter-label { display: flex; align-items: center; gap: 14px; margin: 0 0 18px; color: rgba(235,233,226,.52); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; }
.chapter-label span { width: 38px; height: 1px; background: currentColor; }
.hero h1 { margin: 0; font-family: var(--font-display-cn); font-weight: 300; font-variation-settings: "wght" 300; font-size: clamp(44px, 4.7vw, 72px); line-height: 1.04; letter-spacing: -.05em; text-shadow: 0 14px 70px rgba(0,0,0,.75); }
.title-line { display: block; width: fit-content; overflow: hidden; opacity: 0; transform: translateY(110%); animation: titleReveal 1.25s var(--ease-film) forwards; }
.title-line-one { color: #fff; font-size: 1em; letter-spacing: inherit; }
.title-line-one::after { display: none; }
.title-line-two { max-width: 7.8em; padding-left: 0; color: #fff; font-size: 1em; text-wrap: balance; animation-delay: .13s; }
.hero-intro { max-width: 520px; margin: 22px 0 0; color: rgba(216,230,239,.62); font-family: var(--font-editorial-cn); font-size: 14px; line-height: 1.85; letter-spacing: .025em; }
html:not([lang="zh-CN"]) .hero h1 { font-family: var(--font-display-latin); font-size: clamp(36px, 3.5vw, 54px); letter-spacing: .005em; }
html:not([lang="zh-CN"]) .title-line-one { font-size: 1em; letter-spacing: inherit; }
html:not([lang="zh-CN"]) .title-line-two { max-width: 12em; }
html:not([lang="zh-CN"]) .hero-intro { font-family: Georgia, serif; letter-spacing: .02em; }
html[lang="de"] .hero h1 { font-size: clamp(34px, 3.3vw, 50px); }
.hero-footer { position: absolute; left: 5vw; bottom: 4.7vh; z-index: 4; display: flex; gap: clamp(28px, 3.4vw, 54px); }
.hero-footer div { display: grid; gap: 7px; }
.hero-footer small { font-size: 9px; letter-spacing: .12em; color: rgba(255,255,255,.34); }
.hero-footer strong { font-family: Georgia, serif; font-size: 15px; font-weight: 400; letter-spacing: .06em; }
.scroll-prompt { position: absolute; right: 4.5vw; bottom: 4.7vh; z-index: 4; display: flex; align-items: center; gap: 13px; color: rgba(255,255,255,.4); font-size: 11px; letter-spacing: .14em; }
.scroll-prompt i { position: relative; width: 42px; height: 1px; overflow: hidden; background: rgba(255,255,255,.2); }
.scroll-prompt i::after { content: ""; position: absolute; inset: 0; background: #fff; transform: translateX(-100%); animation: scrollPulse 2s ease infinite; }

.prologue { position: relative; min-height: 100vh; padding: 18vh 6vw 12vh; display: grid; grid-template-columns: .55fr 1.45fr; grid-template-rows: auto auto; gap: 7vh 7vw; background: #030c1a; }
.prologue::before { content: ""; position: absolute; top: 0; left: 6vw; right: 6vw; height: 1px; background: var(--line); }
.prologue-index { display: flex; gap: 18px; align-items: baseline; font-family: Georgia, serif; font-size: 10px; letter-spacing: .18em; color: rgba(255,255,255,.34); }
.prologue-index b { font-weight: 400; color: rgba(255,255,255,.16); }
.prologue-copy h2, .section-title h2, .technology-intro h2, .story-heading h2 { margin: 0; font-family: var(--font-editorial-cn); font-size: clamp(52px, 6.9vw, 116px); line-height: 1.03; letter-spacing: -.04em; font-weight: 400; }
.prologue-copy h2 em, .section-title h2 em, .technology-intro h2 em, .story-heading h2 em, .precision-copy h3 em { color: var(--accent-gold); font-style: normal; }
html:not([lang="zh-CN"]) .prologue-copy h2, html:not([lang="zh-CN"]) .section-title h2, html:not([lang="zh-CN"]) .technology-intro h2, html:not([lang="zh-CN"]) .story-heading h2 { font-family: var(--font-display-latin); letter-spacing: -.025em; }
.prologue-copy > p:last-child { max-width: 680px; margin: 42px 0 0 16vw; color: var(--muted); font-size: 17px; line-height: 2; }
.prologue-measure { grid-column: 2; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.prologue-measure div { position: relative; min-height: 220px; padding: 36px 26px; border-right: 1px solid var(--line); }
.prologue-measure div:last-child { border-right: 0; }
.prologue-measure strong { color: var(--accent-gold); font-family: Georgia, serif; font-size: clamp(46px, 5vw, 78px); font-weight: 400; letter-spacing: -.04em; }
.prologue-measure span { margin-left: 8px; color: var(--steel); font-family: Georgia, serif; font-size: 18px; }
.prologue-measure small { position: absolute; left: 26px; bottom: 30px; color: var(--faint); font-size: 12px; letter-spacing: .1em; }

.process-film { position: relative; height: 100svh; min-height: 680px; background: #010711; --film-progress: 0; --process-accent: #75ceff; }
.process-film-sticky { position: relative; height: 100%; min-height: inherit; overflow: hidden; isolation: isolate; background: #e4e6e4; }
.process-film video { position: absolute; inset: 0; z-index: -4; width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.68) contrast(1.12) brightness(.78); }
.process-play-button { position: absolute; z-index: 8; top: 42%; left: 50%; min-height: 44px; padding: 0 18px; display: flex; align-items: center; gap: 10px; transform: translate(-50%,-50%); color: #eaf8ff; background: rgba(2,14,29,.78); border: 1px solid rgba(113,205,253,.42); border-radius: 24px; backdrop-filter: blur(12px); box-shadow: 0 12px 36px rgba(0,0,0,.34), 0 0 26px rgba(113,205,253,.12); font-size: 12px; letter-spacing: .08em; cursor: pointer; }
.process-play-button[hidden] { display: none; }
.process-play-button i { width: 0; height: 0; border-top: 6px solid transparent; border-bottom: 6px solid transparent; border-left: 10px solid var(--steel); }
.process-play-button:focus-visible { outline: 2px solid var(--steel); outline-offset: 3px; }
.process-film-grade { position: absolute; inset: 0; z-index: -3; pointer-events: none; background: linear-gradient(90deg, rgba(3,5,6,.7), transparent 38%, transparent 64%, rgba(2,3,4,.6)), linear-gradient(180deg, rgba(0,0,0,.64), transparent 23%, transparent 58%, rgba(0,0,0,.78)); box-shadow: inset 0 0 13vw 2vw rgba(0,0,0,.68); }
.process-film-grade::after { content: ""; position: absolute; inset: 0; opacity: .24; background: repeating-linear-gradient(90deg, transparent 0 calc(25% - 1px), rgba(255,255,255,.12) calc(25% - 1px) 25%); mix-blend-mode: overlay; }
.process-scan { position: absolute; z-index: -1; top: 0; bottom: 0; left: calc(var(--film-progress) * 100%); width: 1px; background: linear-gradient(transparent 8%, color-mix(in srgb, var(--process-accent) 65%, transparent) 40%, var(--process-accent) 52%, transparent 90%); box-shadow: 0 0 24px color-mix(in srgb, var(--process-accent) 48%, transparent); opacity: .68; transition: background .45s, box-shadow .45s; }
.process-scan i { position: absolute; top: 52%; left: 50%; width: 9px; height: 9px; border: 1px solid var(--process-accent); transform: translate(-50%,-50%) rotate(45deg); box-shadow: 0 0 12px var(--process-accent); }
.process-film-topline { position: absolute; top: 112px; left: 4.5vw; right: 4.5vw; display: flex; justify-content: space-between; align-items: flex-start; color: rgba(255,255,255,.72); font-family: Georgia, serif; font-size: 10px; letter-spacing: .2em; }
.process-film-topline > div:first-child { display: grid; gap: 8px; }
.process-film-topline b { color: var(--process-accent); font-size: 9px; font-weight: 400; transition: color .45s; }
.process-time { display: flex; gap: 9px; align-items: center; }
.process-time i { color: rgba(255,255,255,.26); font-style: normal; }
.process-chapter { position: absolute; left: 4.5vw; bottom: 13vh; width: min(560px, 45vw); padding: 32px 36px 34px; color: #f0eee8; background: linear-gradient(125deg, rgba(3,5,6,.86), rgba(3,5,6,.57)); border-left: 1px solid var(--process-accent); backdrop-filter: blur(13px); box-shadow: 0 24px 70px rgba(0,0,0,.28); transition: border-color .45s; }
.process-chapter-number { position: absolute; top: 34px; right: 34px; color: rgba(255,255,255,.22); font-family: Georgia, serif; font-size: 34px; line-height: 1; }
.process-chapter > p:first-of-type { margin: 0 0 18px; color: var(--process-accent); font-family: Georgia, serif; font-size: 10px; letter-spacing: .18em; transition: color .45s; }
.process-chapter h2 { max-width: 86%; margin: 0; color: var(--accent-gold); font-family: Georgia, "Songti SC", serif; font-size: clamp(42px, 4.6vw, 74px); line-height: 1.05; letter-spacing: -.05em; font-weight: 400; }
.process-chapter > p:last-child { max-width: 450px; margin: 23px 0 0; color: rgba(255,255,255,.6); font-size: 15px; line-height: 1.85; }
.process-progress { position: absolute; left: 4.5vw; right: 4.5vw; bottom: 5vh; height: 1px; background: rgba(255,255,255,.2); }
.process-progress > span { position: absolute; inset: 0 auto 0 0; width: calc(var(--film-progress) * 100%); background: var(--process-accent); box-shadow: 0 0 16px color-mix(in srgb, var(--process-accent) 58%, transparent); transition: background .45s, box-shadow .45s; }
.process-progress ol { position: absolute; inset: -12px 0 auto; display: flex; justify-content: space-between; padding: 0; margin: 0; list-style: none; }
.process-progress li { width: 25px; height: 25px; display: grid; place-items: center; color: rgba(255,255,255,.32); background: #090b0c; border: 1px solid rgba(255,255,255,.19); border-radius: 50%; font-family: Georgia, serif; font-size: 8px; transition: color .35s, border-color .35s, background .35s; }
.process-progress li.active { color: #071012; background: var(--process-accent); border-color: var(--process-accent); }

.systems { padding: 16vh 4.5vw 14vh; background: linear-gradient(180deg, #030c1a, #061528 35%, #020a17); }
.section-title { display: grid; grid-template-columns: .55fr 1.45fr; gap: 7vw; margin: 0 1.5vw 10vh; }
.section-title .chapter-label { align-self: start; }
.component-explorer { margin: 0 0 15vh; border: 1px solid var(--line); background: #03101f; overflow: hidden; }
.explorer-head { min-height: 116px; padding: 24px 30px; display: flex; justify-content: space-between; align-items: center; gap: 28px; border-bottom: 1px solid var(--line); }
.explorer-head p { margin: 0 0 10px; color: var(--steel); font-family: Georgia, serif; font-size: 10px; letter-spacing: .17em; }
.explorer-head h3 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(24px, 2.1vw, 34px); font-weight: 400; letter-spacing: -.025em; }
.auto-rotate { min-width: 126px; height: 42px; padding: 0 16px; display: flex; align-items: center; justify-content: center; gap: 10px; color: rgba(255,255,255,.56); background: rgba(255,255,255,.025); border: 1px solid var(--line); cursor: pointer; transition: color .3s, background .3s, border-color .3s; }
.auto-rotate i { position: relative; width: 13px; height: 13px; border: 1px solid currentColor; border-radius: 50%; }
.auto-rotate i::after { content: ""; position: absolute; top: -2px; right: -2px; width: 4px; height: 4px; background: #070809; border-top: 1px solid currentColor; transform: rotate(42deg); }
.auto-rotate span { font-size: 12px; letter-spacing: .08em; }
.auto-rotate:hover, .auto-rotate:focus-visible, .auto-rotate[aria-pressed="true"] { color: #fff; border-color: rgba(171,203,213,.45); background: rgba(171,203,213,.08); }
.auto-rotate[aria-pressed="true"] i { animation: rotateIcon 1.3s linear infinite; }
.explorer-body { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(330px, .55fr); min-height: 760px; }
.turntable { position: relative; min-width: 0; overflow: hidden; cursor: grab; outline: none; background: radial-gradient(circle at 52% 46%, #133858 0%, #092039 30%, #04101f 66%, #020916 100%); touch-action: none; user-select: none; }
.turntable:focus-visible { box-shadow: inset 0 0 0 2px rgba(181,210,219,.55); }
.turntable.dragging { cursor: grabbing; }
.turntable-stage { position: absolute; inset: 0 0 82px; overflow: hidden; }
.turntable-aura { position: absolute; left: 50%; top: 48%; width: 70%; aspect-ratio: 1; border-radius: 50%; transform: translate(-50%,-50%); background: radial-gradient(circle, rgba(182,212,221,.12), rgba(103,136,146,.035) 39%, transparent 70%); filter: blur(12px); }
.turntable-stage::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 9vw 1.5vw #050505; }
.turntable-sprite, .part-hotspots { position: absolute; left: 50%; top: 50%; width: min(760px, 88%); aspect-ratio: 1; transform: translate(-50%,-50%); }
.turntable-sprite { z-index: 1; background-image: url("./assets/softbag-turntable.png"); background-repeat: no-repeat; background-size: 400% 200%; background-position: 0% 0%; filter: grayscale(.76) saturate(.44) brightness(.88) contrast(1.12) drop-shadow(0 34px 65px rgba(104,164,184,.13)); transition: filter .25s ease; }
.turntable.dragging .turntable-sprite { filter: grayscale(.62) saturate(.5) brightness(.94) contrast(1.1) drop-shadow(0 40px 70px rgba(104,164,184,.2)); }
.part-hotspots { z-index: 4; pointer-events: none; }
.part-hotspot { position: absolute; left: var(--x); top: var(--y); width: 17px; height: 17px; padding: 0; transform: translate(-50%,-50%); color: rgba(221,233,236,.58); background: transparent; border: 0; border-radius: 50%; cursor: pointer; pointer-events: auto; transition: left .24s ease, top .24s ease, opacity .22s ease, color .22s ease; }
.part-hotspot::before { content: ""; position: absolute; inset: 3px; border: 1px solid currentColor; border-radius: 50%; background: #0c1113; box-shadow: 0 0 0 5px rgba(165,204,216,.055); transition: transform .24s, background .24s, box-shadow .24s; }
.part-hotspot::after { content: ""; position: absolute; top: 8px; width: 52px; height: 1px; background: currentColor; opacity: .72; }
.part-hotspot.side-right::after { left: 14px; transform: rotate(-12deg); transform-origin: left; }
.part-hotspot.side-left::after { right: 14px; transform: rotate(12deg); transform-origin: right; }
.part-hotspot .hotspot-label { position: absolute; top: -12px; display: grid; grid-template-columns: auto auto; align-items: baseline; gap: 7px; width: max-content; min-width: 100px; text-align: left; font-style: normal; text-shadow: 0 2px 10px #000; }
.part-hotspot.side-right .hotspot-label { left: 72px; }
.part-hotspot.side-left .hotspot-label { right: 72px; text-align: right; grid-template-columns: auto auto; }
.part-hotspot .hotspot-label b { font-family: Georgia, serif; font-size: 10px; font-weight: 400; color: currentColor; }
.part-hotspot .hotspot-label em { font-size: 11px; font-style: normal; letter-spacing: .06em; white-space: nowrap; }
.part-hotspot:hover, .part-hotspot:focus-visible, .part-hotspot.active { color: #fff; outline: none; z-index: 6; }
.part-hotspot:hover::before, .part-hotspot:focus-visible::before, .part-hotspot.active::before { transform: scale(1.25); background: var(--steel); box-shadow: 0 0 0 6px rgba(165,204,216,.1), 0 0 22px rgba(165,204,216,.5); }
.part-hotspot.hidden { opacity: 0; pointer-events: none; }
.turntable-grid { position: absolute; z-index: 0; left: 10%; right: 10%; bottom: 7%; height: 30%; background: linear-gradient(rgba(171,199,207,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(171,199,207,.055) 1px, transparent 1px); background-size: 34px 34px; transform: perspective(380px) rotateX(66deg); transform-origin: bottom; -webkit-mask-image: linear-gradient(transparent, #000); mask-image: linear-gradient(transparent, #000); }
.view-angle { position: absolute; right: 24px; bottom: 24px; display: grid; justify-items: end; gap: 4px; }
.view-angle span { color: rgba(255,255,255,.22); font-size: 8px; letter-spacing: .16em; }
.view-angle strong { font-family: Georgia, serif; font-size: 13px; font-weight: 400; color: rgba(255,255,255,.5); }
.mobile-part-preview { display: none; }
.part-inspector { padding: 46px 36px 34px; border-left: 1px solid var(--line); background: linear-gradient(145deg, rgba(80,180,241,.07), transparent 42%), #04101e; }
.part-heading { display: flex; align-items: baseline; gap: 13px; }
.part-heading span { font-family: Georgia, serif; font-size: 36px; color: var(--steel); }
.part-heading small { color: var(--faint); font-family: Georgia, serif; font-size: 8px; letter-spacing: .16em; }
.part-inspector > p:nth-of-type(1) { margin: 36px 0 12px; color: var(--steel); font-family: Georgia, serif; font-size: 10px; letter-spacing: .15em; }
.part-inspector > h3 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(34px, 3.2vw, 52px); line-height: 1.12; font-weight: 400; letter-spacing: -.045em; }
.part-inspector > p:nth-of-type(2) { min-height: 94px; margin: 25px 0 32px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.part-inspector dl { margin: 0 0 34px; border-top: 1px solid var(--line); }
.part-inspector dl div { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.part-inspector dt { color: var(--faint); font-size: 11px; letter-spacing: .1em; }
.part-inspector dd { margin: 0; text-align: right; font-size: 12px; color: rgba(255,255,255,.72); }
.part-selector { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.part-selector button { min-height: 54px; padding: 9px 10px; display: flex; align-items: center; gap: 9px; text-align: left; color: rgba(255,255,255,.36); background: transparent; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); cursor: pointer; transition: color .25s, background .25s; }
.part-selector button span { font-family: Georgia, serif; font-size: 9px; color: var(--faint); }
.part-selector button b { font-size: 11px; font-weight: 400; }
.part-selector button:hover, .part-selector button:focus-visible, .part-selector button.active { color: #fff; background: rgba(166,199,209,.08); outline: none; }
.rotation-ruler { position: relative; height: 54px; padding: 0 26px; display: grid; grid-template-columns: repeat(8, 1fr); align-items: center; border-top: 1px solid var(--line); color: rgba(255,255,255,.22); font-family: Georgia, serif; font-size: 9px; text-align: center; }
.rotation-ruler span { transition: color .25s; }
.rotation-ruler span.active { color: #fff; }
.rotation-ruler i { position: absolute; left: calc(6.25% - 5px); top: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--steel); box-shadow: 0 0 18px rgba(167,189,197,.6); transition: left .3s var(--ease-film); }
.reel { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(320px, .65fr); grid-template-rows: minmax(560px, 72vh) auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.reel-visual { position: relative; grid-row: 1 / 3; min-height: 760px; overflow: hidden; outline: none; background: radial-gradient(circle at 55% 46%, #12334f 0%, #071a30 36%, #020916 73%); perspective: 1200px; }
.reel-visual::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 10vw 2vw #000; pointer-events: none; }
.reel-light { position: absolute; top: -35%; left: 37%; width: 22%; height: 170%; background: linear-gradient(90deg, transparent, rgba(190,216,223,.12), transparent); transform: rotate(12deg); filter: blur(16px); }
.reel-visual img { position: absolute; inset: 7% 3% 10%; width: 94%; height: 83%; object-fit: contain; filter: grayscale(.55) saturate(.47) brightness(.88) contrast(1.15) drop-shadow(0 34px 90px rgba(100,162,181,.2)); transform: rotateX(var(--tilt-y, 0deg)) rotateY(var(--tilt-x, 0deg)) scale(1); transition: opacity .35s ease, transform .6s var(--ease-film), filter .5s; }
.reel.changing .reel-visual img { opacity: 0; transform: scale(1.035); filter: blur(8px) grayscale(1); }
.reel-frame i { position: absolute; z-index: 2; width: 26px; height: 26px; border-color: rgba(255,255,255,.22); border-style: solid; }
.reel-frame i:nth-child(1) { top: 25px; left: 25px; border-width: 1px 0 0 1px; }
.reel-frame i:nth-child(2) { top: 25px; right: 25px; border-width: 1px 1px 0 0; }
.reel-frame i:nth-child(3) { bottom: 25px; left: 25px; border-width: 0 0 1px 1px; }
.reel-frame i:nth-child(4) { bottom: 25px; right: 25px; border-width: 0 1px 1px 0; }
.reel-counter { position: absolute; z-index: 3; top: 32px; left: 40px; font-family: Georgia, serif; font-size: 11px; letter-spacing: .18em; color: rgba(255,255,255,.34); }
.reel-counter b { color: #fff; font-size: 21px; font-weight: 400; }
.reel-caption { position: absolute; z-index: 3; right: 40px; bottom: 35px; color: rgba(255,255,255,.36); font-family: Georgia, serif; font-size: 10px; letter-spacing: .17em; }
.reel-info { display: flex; flex-direction: column; justify-content: center; padding: 8vh 4vw; border-left: 1px solid var(--line); transition: opacity .3s ease, transform .5s var(--ease-film); }
.reel.changing .reel-info { opacity: .25; transform: translateY(8px); }
.reel-info > p:first-child { margin: 0 0 20px; color: var(--steel); font-family: Georgia, serif; font-size: 11px; letter-spacing: .15em; }
.reel-info h3 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(36px, 3.1vw, 58px); line-height: 1.16; font-weight: 400; letter-spacing: -.045em; }
.reel-info > p:nth-child(3) { margin: 32px 0 50px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.reel-info dl { display: grid; grid-template-columns: 1fr; margin: 0; border-top: 1px solid var(--line); }
.reel-info dl div { display: flex; justify-content: space-between; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.reel-info dt { color: var(--faint); font-size: 12px; letter-spacing: .1em; }
.reel-info dd { margin: 0; font-family: Georgia, serif; font-size: 15px; }
.reel-tabs { display: grid; grid-template-columns: 1fr 1fr; border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
.reel-tabs button { position: relative; min-height: 116px; padding: 20px 22px; display: grid; grid-template-columns: auto 1fr; align-content: center; gap: 6px 12px; text-align: left; color: rgba(255,255,255,.38); background: transparent; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); cursor: pointer; transition: color .35s, background .35s; }
.reel-tabs button:nth-child(even) { border-right: 0; }
.reel-tabs button::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(170,199,208,.11), transparent); opacity: 0; transition: opacity .35s; }
.reel-tabs button:hover, .reel-tabs button:focus-visible, .reel-tabs button.active { color: #fff; background: rgba(255,255,255,.025); }
.reel-tabs button.active::before { opacity: 1; }
.reel-tabs span { grid-row: 1 / 3; font-family: Georgia, serif; font-size: 10px; color: rgba(255,255,255,.25); }
.reel-tabs b { position: relative; font-size: 13px; font-weight: 400; letter-spacing: .04em; }
.reel-tabs small { position: relative; font-family: Georgia, serif; font-size: 9px; letter-spacing: .12em; color: rgba(255,255,255,.26); }

.interlude { position: relative; min-height: 100svh; padding: 12vh 5vw; display: flex; flex-direction: column; justify-content: center; overflow: hidden; isolation: isolate; }
.interlude-image { position: absolute; inset: 0; z-index: -3; background: #101113; }
.interlude-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) brightness(.34) contrast(1.5); transform: scale(1.12); }
.interlude-shade { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg, rgba(3,3,3,.96) 0%, rgba(3,3,3,.47) 50%, rgba(3,3,3,.77) 100%), radial-gradient(circle at 65% 42%, transparent, #050505 75%); }
.interlude > p { margin: 0; font-family: Georgia, serif; font-size: clamp(70px, 12vw, 190px); line-height: .78; letter-spacing: -.065em; color: rgba(235,233,226,.9); }
.interlude-subtitle { align-self: flex-end; width: min(560px, 42vw); margin-top: 9vh; display: grid; grid-template-columns: auto 1fr; gap: 28px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.25); }
.interlude-subtitle span { font-family: Georgia, "Songti SC", serif; font-size: 22px; }
.interlude-subtitle small { color: var(--muted); font-size: 13px; line-height: 1.8; }

.technology { padding: 16vh 6vw; display: grid; grid-template-columns: minmax(320px, .72fr) 1.28fr; gap: 8vw; background: #030c1a; }
.technology-intro { position: sticky; top: 15vh; align-self: start; }
.technology-intro h2 { font-size: clamp(54px, 6.4vw, 100px); }
.technology-intro > p:last-child { margin: 34px 0 0; color: var(--muted); font-family: Georgia, "Songti SC", serif; font-size: 18px; }
.method-list { border-top: 1px solid var(--line); }
.method { position: relative; display: grid; grid-template-columns: 64px 1fr auto; gap: 26px; align-items: center; min-height: 240px; padding: 34px 0; border-bottom: 1px solid var(--line); overflow: hidden; outline: none; }
.method::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(166,196,206,.08), transparent 70%); transform: translateX(-102%); transition: transform .8s var(--ease-film); }
.method:hover::before, .method:focus-visible::before { transform: translateX(0); }
.method > span { align-self: start; margin-top: 7px; font-family: Georgia, serif; font-size: 11px; color: var(--faint); }
.method small { color: var(--steel); font-family: Georgia, serif; font-size: 10px; letter-spacing: .14em; }
.method h3 { margin: 13px 0 18px; font-family: Georgia, "Songti SC", serif; font-size: clamp(30px, 3vw, 48px); font-weight: 400; letter-spacing: -.04em; }
.method p { max-width: 620px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.85; }
.method > strong { align-self: end; padding-bottom: 8px; font-family: Georgia, serif; font-size: 11px; font-weight: 400; letter-spacing: .12em; color: var(--faint); }

.precision { position: relative; min-height: 100svh; padding: 13vh 7vw; display: flex; align-items: center; overflow: hidden; background: #c9c7c1; color: #111; isolation: isolate; }
.precision-still { position: absolute; inset: 0 0 0 45%; z-index: -2; overflow: hidden; }
.precision-still::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, #c9c7c1 0%, rgba(201,199,193,.25) 35%, rgba(5,5,5,.18) 100%), linear-gradient(180deg, rgba(255,255,255,.1), rgba(0,0,0,.28)); }
.precision-still img { width: 100%; height: 100%; object-fit: cover; image-rendering: auto; filter: grayscale(1) contrast(1.12) brightness(.9); transform: scale(1.1); }
.precision-copy { width: min(660px, 48vw); }
.precision-copy > p:first-child { margin: 0 0 12px; font-family: Georgia, serif; font-size: 11px; letter-spacing: .18em; color: rgba(0,0,0,.48); }
.precision-copy h2 { margin: 0; display: flex; align-items: flex-start; gap: 15px; font-family: Georgia, serif; line-height: .8; }
.precision-copy h2 strong { color: var(--accent-gold); font-size: clamp(120px, 16vw, 260px); font-weight: 400; letter-spacing: -.09em; }
.precision-copy h2 span { margin-top: 24px; font-size: 26px; }
.precision-copy h3 { margin: 44px 0 26px; font-family: Georgia, "Songti SC", serif; font-size: clamp(36px, 4vw, 66px); line-height: 1.15; font-weight: 400; letter-spacing: -.045em; }
.precision-copy > p:last-child { max-width: 570px; margin: 0; color: rgba(0,0,0,.6); font-size: 15px; line-height: 1.95; }
.precision-mark { position: absolute; right: 3vw; bottom: 4vh; font-family: Georgia, serif; font-size: 10px; letter-spacing: .18em; color: rgba(0,0,0,.44); }

.story { padding: 17vh 6vw 15vh; background: #020916; }
.story-heading { display: grid; grid-template-columns: .55fr 1.45fr; gap: 7vw; margin-bottom: 11vh; }
.story-heading .chapter-label { grid-row: 1 / 3; }
.story-heading > p:last-child { max-width: 580px; margin: 35px 0 0 12vw; color: var(--muted); font-size: 16px; line-height: 1.9; }
.timeline { position: relative; max-width: 1160px; margin: 0 0 0 auto; padding: 0; list-style: none; }
.timeline::before { content: ""; position: absolute; left: 154px; top: 0; bottom: 0; width: 1px; background: var(--line); }
.timeline li { display: grid; grid-template-columns: 120px 70px 1fr; min-height: 190px; }
.timeline time { padding-top: 7px; font-family: Georgia, serif; font-size: 37px; letter-spacing: -.04em; }
.timeline i { position: relative; }
.timeline i::before { content: ""; position: absolute; top: 18px; left: 30px; width: 9px; height: 9px; border: 1px solid var(--paper); border-radius: 50%; background: #020916; transform: translateX(-50%); transition: background .35s, box-shadow .35s; }
.timeline li:hover i::before { background: var(--paper); box-shadow: 0 0 30px rgba(194,219,228,.65); }
.timeline div { padding: 0 0 54px 24px; }
.timeline strong { display: block; margin-bottom: 14px; font-family: Georgia, "Songti SC", serif; font-size: 26px; font-weight: 400; }
.timeline p { max-width: 660px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }

.finale { position: relative; min-height: 100svh; padding: 0 4.5vw 7vh; display: flex; align-items: flex-end; justify-content: center; overflow: hidden; background: radial-gradient(circle at 67% 48%, #123754 0%, #06172b 36%, #020916 73%); isolation: isolate; }
.finale-machine { position: absolute; inset: 3% -10% 0 28%; z-index: -2; }
.finale-machine img { width: 100%; height: 100%; object-fit: contain; filter: grayscale(.56) saturate(.46) brightness(.7) contrast(1.22); opacity: .82; animation: finaleDrift 18s ease-in-out infinite alternate; }
.finale-shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(0,0,0,.78), rgba(0,0,0,.08) 64%, rgba(0,0,0,.52)); box-shadow: inset 0 0 13vw rgba(0,0,0,.88); }
.finale-statement { position: absolute; z-index: 0; top: calc(15vh + 86px); left: 4vw; right: 4vw; text-align: center; pointer-events: none; text-shadow: 0 10px 38px rgba(0,0,0,.5); }
.finale-statement p { display: flex; align-items: center; justify-content: center; gap: 19px; margin: 0 0 27px; color: #d8b692; font-family: Georgia, serif; font-size: 11px; letter-spacing: .38em; }
.finale-statement p span { width: 42px; height: 1px; background: linear-gradient(90deg, transparent, currentColor); }
.finale-statement p span:last-child { transform: rotate(180deg); }
.finale-statement h2 { margin: 0; color: #edf3f7; font-family: var(--font-editorial-cn); font-size: clamp(40px, 4.15vw, 67px); line-height: 1.12; letter-spacing: -.035em; font-weight: 400; white-space: nowrap; }
.finale-statement h2 em { color: var(--accent-gold); font-style: normal; }
.finale-statement small { display: flex; align-items: center; justify-content: center; gap: 11px; margin-top: 25px; color: rgba(210,225,237,.58); font-family: Georgia, "Songti SC", serif; font-size: 14px; letter-spacing: .16em; }
.finale-statement small i { width: 3px; height: 3px; border-radius: 50%; background: currentColor; }
.contact-panel { position: relative; z-index: 1; width: min(1180px, 91vw); color: #edf5fa; background: linear-gradient(145deg, rgba(8,20,38,.44), rgba(3,11,23,.28)); border: 1px solid rgba(178,215,239,.34); border-radius: 20px; box-shadow: inset 0 1px rgba(255,255,255,.055), 0 24px 72px rgba(0,0,0,.3); backdrop-filter: blur(8px) saturate(1.16); overflow: hidden; }
.contact-panel-heading { min-height: 58px; padding: 13px 22px 12px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid rgba(178,215,239,.2); }
.contact-panel-heading p { margin: 0; color: rgba(206,229,244,.62); font-family: Georgia, serif; font-size: 10px; letter-spacing: .19em; }
.contact-panel-heading h2 { margin: 0; font-family: var(--font-editorial-cn); font-size: 23px; line-height: 1; letter-spacing: -.025em; font-weight: 400; }
.contact-panel-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.contact-item { min-height: 108px; padding: 18px 22px 17px; display: flex; flex-direction: column; gap: 16px; border-right: 1px solid rgba(178,215,239,.18); transition: background .45s, color .45s; }
.contact-item:last-child { border-right: 0; }
.contact-item:hover, .contact-item:focus-visible { color: #fff; background: rgba(44,121,179,.18); outline: none; }
.contact-item span { color: #d2b181; font-size: 11px; letter-spacing: .16em; }
.contact-item span b { margin-left: 7px; font-family: Georgia, serif; font-weight: 400; letter-spacing: .22em; }
.contact-item strong { max-width: 100%; font-family: Georgia, "Songti SC", serif; font-size: clamp(16px, 1.08vw, 18px); line-height: 1.42; letter-spacing: -.005em; font-weight: 400; overflow-wrap: anywhere; }
.contact-item-address strong { font-size: clamp(15px, .96vw, 16px); }

.site-footer { min-height: 130px; padding: 34px 5vw; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; color: rgba(211,235,251,.42); background: #010711; border-top: 1px solid var(--line); font-size: 11px; letter-spacing: .08em; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.site-footer p { margin: 0; }
.site-footer span { justify-self: end; font-family: Georgia, serif; }

.reveal { opacity: 0; transform: translateY(38px); transition: opacity 1s ease, transform 1s var(--ease-film); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.hero .reveal { transition-delay: .35s; }

@keyframes grain { 0% { transform: translate(0,0); } 25% { transform: translate(3%,-4%); } 50% { transform: translate(-4%,3%); } 75% { transform: translate(5%,5%); } 100% { transform: translate(-3%,-2%); } }
@keyframes introScan { to { transform: translateY(45vh); } }
@keyframes titleReveal { to { opacity: 1; transform: translateY(0); } }
@keyframes heroDrift { from { scale: 1.02; translate: 0 -1%; } to { scale: 1.08; translate: -1.5% 1%; } }
@keyframes scrollPulse { 0% { transform: translateX(-100%); } 55%, 100% { transform: translateX(100%); } }
@keyframes finaleDrift { from { transform: translateX(0) scale(1); } to { transform: translateX(-2%) scale(1.04); } }
@keyframes rotateIcon { to { transform: rotate(360deg); } }

@media (max-width: 1120px) {
  .hero h1 { font-size: clamp(42px, 5.4vw, 62px); }
  .process-chapter { width: min(600px, 56vw); }
  .reel { grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); }
  .explorer-body { grid-template-columns: minmax(0, 1.25fr) minmax(310px, .75fr); }
  .part-inspector { padding: 38px 26px 28px; }
  .reel-tabs { grid-template-columns: 1fr; }
  .reel-tabs button { min-height: 90px; border-right: 0; }
  .precision-still { left: 39%; }
}

@media (min-width: 901px) and (max-height: 760px) {
  .hero { min-height: 600px; }
  .hero-product-stage { top: auto; right: -4vw; bottom: 3%; width: min(64vw, 1040px); height: 66%; }
  .hero-copy { top: 150px; bottom: auto; width: min(600px, 52vw); }
  .chapter-label { margin-bottom: 15px; }
  .hero h1 { font-size: clamp(42px, 4.75vw, 58px); }
  .hero-intro { max-width: 500px; margin-top: 17px; font-size: 13px; line-height: 1.7; }
}

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; height: 70px; padding: 0 22px; }
  .main-nav { display: none; }
  .brand-wordmark small { display: none; }
  .contact-link { font-size: 12px; }
  .hero { min-height: 760px; }
  .hero-topline { top: 98px; left: 24px; right: 24px; }
  .hero-product-stage { top: 4%; right: -5vw; bottom: auto; width: 105vw; height: 52%; }
  .hero-product-assembly { transform-origin: 58% 52%; }
  .hero-media::before { background: linear-gradient(180deg, rgba(1,8,20,.12), rgba(2,16,34,.08) 38%, rgba(1,8,19,.72) 58%, #020916 82%); }
  .hero-copy { top: auto; left: 24px; right: 24px; bottom: 18vh; width: auto; }
  .hero h1 { font-size: clamp(38px, 7.7vw, 50px); line-height: 1.03; }
  html:not([lang="zh-CN"]) .hero h1 { font-size: clamp(30px, 6.1vw, 42px); }
  .title-line-two { padding-left: 0; }
  .hero-intro { max-width: 500px; margin-left: 0; font-size: 14px; line-height: 1.75; }
  .hero-footer { left: 24px; bottom: 6.5vh; gap: 24px; }
  .hero-footer div:nth-child(3) { display: none; }
  .scroll-prompt { display: none; }
  .prologue { padding: 130px 24px 100px; grid-template-columns: 1fr; gap: 50px; }
  .prologue-copy > p:last-child { margin-left: 0; }
  .prologue-measure { grid-column: 1; }
  .prologue-measure div { min-height: 160px; padding: 26px 14px; }
  .prologue-measure small { left: 14px; bottom: 22px; }
  .process-film { height: 100svh; }
  .process-film-sticky { min-height: 660px; }
  .process-film video { object-position: center; }
  .process-film-topline { top: 94px; left: 24px; right: 24px; }
  .process-chapter { left: 24px; bottom: 13vh; width: min(590px, calc(100vw - 96px)); padding: 28px 30px 30px; }
  .process-chapter h2 { font-size: clamp(44px, 9vw, 70px); }
  .process-progress { left: 24px; right: 24px; bottom: 5vh; }
  .systems { padding: 120px 20px 100px; }
  .section-title, .story-heading { grid-template-columns: 1fr; margin: 0 4px 70px; }
  .component-explorer { margin-bottom: 110px; }
  .explorer-head { padding: 24px; }
  .explorer-body { grid-template-columns: 1fr; }
  .turntable { min-height: 660px; }
  .turntable { touch-action: pan-y; }
  .part-inspector { border-left: 0; border-top: 1px solid var(--line); }
  .part-inspector > p:nth-of-type(2) { min-height: 0; }
  .part-selector { grid-template-columns: repeat(4, 1fr); }
  .part-selector button { min-height: 62px; display: grid; justify-items: center; text-align: center; }
  .part-selector button b { font-size: 10px; }
  .reel { grid-template-columns: 1fr; grid-template-rows: auto; }
  .reel-visual { grid-row: auto; min-height: 510px; }
  .reel-info { min-height: 500px; border-left: 0; border-top: 1px solid var(--line); padding: 60px 28px; }
  .reel-tabs { grid-template-columns: 1fr 1fr; border-left: 0; }
  .reel-tabs button:nth-child(odd) { border-right: 1px solid var(--line); }
  .interlude { min-height: 820px; padding: 100px 24px; }
  .interlude > p { font-size: clamp(70px, 18vw, 120px); }
  .interlude-subtitle { width: 100%; grid-template-columns: 1fr; }
  .technology { padding: 120px 24px; grid-template-columns: 1fr; gap: 70px; }
  .technology-intro { position: static; }
  .method { grid-template-columns: 42px 1fr; min-height: 250px; }
  .method > strong { display: none; }
  .precision { min-height: 900px; padding: 100px 24px; align-items: flex-end; }
  .precision-still { inset: 0 0 42% 0; }
  .precision-still::after { background: linear-gradient(180deg, rgba(201,199,193,.1), #c9c7c1 96%); }
  .precision-copy { width: 100%; }
  .precision-copy h2 strong { font-size: clamp(118px, 36vw, 210px); }
  .story { padding: 120px 24px 100px; }
  .story-heading > p:last-child { margin-left: 0; }
  .timeline { margin-top: 70px; }
  .timeline::before { left: 92px; }
  .timeline li { grid-template-columns: 76px 42px 1fr; min-height: 210px; }
  .timeline time { font-size: 24px; }
  .timeline i::before { left: 16px; }
  .timeline div { padding-left: 10px; }
  .finale { min-height: 820px; padding: 0 24px 64px; }
  .finale-machine { inset: 2% -34% 24% 4%; }
  .finale-statement { top: 150px; left: 24px; right: 24px; }
  .finale-statement p { margin-bottom: 22px; font-size: 9px; letter-spacing: .28em; }
  .finale-statement h2 { font-size: clamp(36px, 6.6vw, 52px); white-space: normal; text-wrap: balance; }
  .finale-statement small { margin-top: 18px; font-size: 12px; }
  .contact-panel { width: min(720px, 100%); }
  .contact-panel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-item:nth-child(2) { border-right: 0; }
  .contact-item:nth-child(-n+2) { border-bottom: 1px solid rgba(178,215,239,.18); }
  .site-footer { grid-template-columns: 1fr; gap: 15px; text-align: left; }
  .site-footer span { justify-self: start; }
}

@media (max-width: 520px) {
  .site-header { padding: 0 16px; }
  .header-actions { gap: 10px; }
  .contact-link { display: none; }
  .language-switcher { width: 112px; height: 42px; grid-template-columns: auto 1fr 40px; }
  .language-toggle { width: 40px; height: 40px; }
  .language-menu button { min-height: 44px; }
  .language-symbol { padding-left: 8px; }
  .language-label { padding-left: 6px; }
  .language-menu { width: 166px; }
  .hero-topline span:last-child { display: none; }
  .hero-copy { left: 24px; right: auto; width: calc(100vw - 48px); overflow: visible; }
  .hero h1 { font-size: clamp(35px, 9vw, 44px); }
  html:not([lang="zh-CN"]) .hero h1 { font-size: clamp(28px, 7.4vw, 38px); }
  .hero-intro { width: 100%; max-width: none; overflow-wrap: anywhere; }
  .hero-footer strong { font-size: 13px; }
  .hero-product-stage { top: 7%; right: 0; width: 100vw; height: 43%; }
  .hero-product-assembly img { object-position: center; }
  .prologue-copy h2, .section-title h2, .technology-intro h2, .story-heading h2 { font-size: 48px; }
  html:not([lang="zh-CN"]) .prologue-copy h2, html:not([lang="zh-CN"]) .section-title h2, html:not([lang="zh-CN"]) .technology-intro h2, html:not([lang="zh-CN"]) .story-heading h2 { font-size: clamp(34px, 9.5vw, 42px); overflow-wrap: anywhere; }
  .prologue-measure { grid-template-columns: 1fr; }
  .prologue-measure div { min-height: 128px; border-right: 0; border-bottom: 1px solid var(--line); }
  .prologue-measure div:last-child { border-bottom: 0; }
  .process-film { height: 100svh; }
  .process-film-sticky { min-height: 620px; }
  .process-film video { width: 178vh; max-width: none; left: 50%; transform: translateX(-50%); }
  .process-film-topline { top: 88px; }
  .process-film-topline > div:first-child b { display: none; }
  .process-chapter { bottom: 15vh; width: calc(100vw - 48px); padding: 25px 24px 27px; }
  .process-chapter-number { top: 27px; right: 24px; font-size: 26px; }
  .process-chapter h2 { font-size: clamp(38px, 11vw, 46px); overflow-wrap: anywhere; }
  .process-chapter > p:last-child { margin-top: 17px; font-size: 15px; line-height: 1.72; }
  .process-progress ol { inset: -10px 0 auto; }
  .process-progress li { width: 21px; height: 21px; font-size: 7px; }
  .reel-visual { min-height: 390px; }
  .explorer-head { align-items: flex-start; gap: 16px; padding: 20px; }
  .explorer-head h3 { font-size: 24px; }
  .auto-rotate { min-width: 44px; width: 44px; padding: 0; }
  .auto-rotate span { display: none; }
  .turntable { min-height: 500px; }
  .turntable-stage { bottom: 72px; }
  .turntable-sprite, .part-hotspots { width: 108%; }
  .part-hotspot { width: 26px; height: 26px; }
  .part-hotspot::before { inset: 7px; }
  .part-hotspot .hotspot-label em { display: none; }
  .part-hotspot.active .hotspot-label em { display: inline-block; max-width: 92px; padding: 4px 7px; color: #eaf8ff; background: rgba(2, 14, 29, .9); border: 1px solid rgba(113, 205, 253, .28); font-size: 9px; line-height: 1.3; white-space: normal; box-shadow: 0 8px 24px rgba(0,0,0,.28); }
  .part-hotspot .hotspot-label { min-width: 0; }
  .part-hotspot.side-right .hotspot-label { left: 62px; }
  .part-hotspot.side-left .hotspot-label { right: 62px; }
  .mobile-part-preview { position: absolute; z-index: 7; left: 18px; bottom: 18px; max-width: calc(100% - 122px); display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 10px; pointer-events: none; }
  .mobile-part-preview > span { width: 31px; height: 31px; display: grid; place-items: center; color: #03101f; background: var(--steel); border-radius: 50%; font-family: Georgia, serif; font-size: 9px; box-shadow: 0 0 22px rgba(113,205,253,.28); }
  .mobile-part-preview div { min-width: 0; display: grid; gap: 3px; }
  .mobile-part-preview small { overflow: hidden; color: rgba(184,221,242,.5); font-family: Georgia, serif; font-size: 7px; letter-spacing: .1em; text-overflow: ellipsis; white-space: nowrap; }
  .mobile-part-preview strong { overflow: hidden; color: #edf7ff; font-family: Georgia, "Songti SC", serif; font-size: 13px; font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
  .part-inspector { padding: 38px 22px 26px; }
  .part-selector { grid-template-columns: repeat(2, 1fr); }
  .rotation-ruler { padding: 0 12px; }
  .reel-visual img { inset: 10% 0; width: 100%; height: 80%; }
  .reel-caption { left: 32px; right: auto; bottom: 26px; }
  .reel-tabs { grid-template-columns: 1fr; }
  .reel-tabs button:nth-child(odd) { border-right: 0; }
  .interlude > p { font-size: clamp(48px, 14.5vw, 62px); overflow-wrap: anywhere; }
  .method { min-height: 280px; gap: 10px; }
  .precision-copy h3 { font-size: 38px; }
  .timeline::before { left: 75px; }
  .timeline li { grid-template-columns: 62px 30px 1fr; }
  .timeline i::before { left: 13px; }
  .finale { min-height: max(760px, 100svh); padding-bottom: 28px; }
  .finale-machine { inset: 0 -58% 38% -10%; }
  .finale-statement { top: 136px; left: 20px; right: 20px; }
  .finale-statement p { gap: 10px; margin-bottom: 17px; font-size: 7px; letter-spacing: .2em; }
  .finale-statement p span { width: 22px; }
  .finale-statement h2 { font-size: clamp(31px, 8.4vw, 39px); line-height: 1.18; }
  .finale-statement small { margin-top: 13px; font-size: 10px; letter-spacing: .1em; }
  .contact-panel { border-radius: 18px; }
  .contact-panel-heading { min-height: 54px; padding: 12px 16px; }
  .contact-panel-heading p { font-size: 8px; letter-spacing: .15em; }
  .contact-panel-heading h2 { font-size: 21px; }
  .contact-panel-grid { grid-template-columns: 1fr; }
  .contact-item { min-height: 74px; padding: 12px 16px; display: grid; grid-template-columns: 92px 1fr; align-items: center; gap: 12px; border-right: 0; border-bottom: 1px solid rgba(178,215,239,.18); }
  .contact-item:nth-child(-n+2) { border-bottom: 1px solid rgba(178,215,239,.18); }
  .contact-item:last-child { border-bottom: 0; }
  .contact-item strong, .contact-item-address strong { font-size: 16px; }
}

@media (max-width: 960px) and (max-height: 520px) and (orientation: landscape) {
  .site-header { grid-template-columns: 1fr auto; height: 58px; padding: 0 18px; }
  .main-nav, .contact-link { display: none; }
  .brand img { width: 32px; height: 32px; }
  .brand-wordmark small { display: none; }
  .language-switcher { width: 108px; height: 40px; grid-template-columns: auto 1fr 38px; }
  .language-toggle { width: 38px; height: 38px; }
  .hero { height: 100svh; min-height: 360px; }
  .hero-topline { top: 76px; left: 24px; right: 24px; }
  .hero-topline span:last-child { display: none; }
  .hero-product-stage { top: auto; right: -2vw; bottom: 1%; width: 60vw; height: 78%; }
  .hero-product-assembly img { object-position: right center; }
  .hero-copy { top: 104px; right: auto; bottom: auto; left: 24px; width: 45vw; }
  .hero-copy .chapter-label { margin-bottom: 9px; font-size: 9px; }
  .hero h1 { font-size: clamp(27px, 4.2vw, 36px); line-height: 1.02; }
  .title-line-two { max-width: 8.2em; }
  .hero-intro { max-width: 43vw; margin-top: 11px; font-size: 12px; line-height: 1.55; }
  .hero-footer { left: 24px; bottom: 15px; gap: 20px; }
  .hero-footer div:nth-child(3) { display: none; }
  .hero-footer small { font-size: 7px; }
  .hero-footer strong { font-size: 12px; }
  .scroll-prompt { display: none; }
}

@media (pointer: coarse) { .cursor-light { display: none; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .film-intro { display: none; }
  .reveal { opacity: 1; transform: none; }
  .title-line { opacity: 1; transform: none; }
  .process-film { height: 100svh; }
  .process-film-sticky { position: relative; }
  .process-scan { display: none; }
  .hero-particles { opacity: .58; }
}