/* ===================================================================
   VCEAU · 屿岸山石 — Official Site
   宇宙黑 · 单色体系 · 极简致本，玩心致远
   =================================================================== */

:root {
  /* cosmic monochrome */
  --bg:        #05070b;
  --bg-2:      #080b11;
  --bg-3:      #0c1018;
  --ink:       #f4f6fa;
  --ink-soft:  rgba(244, 246, 250, 0.74);
  --ink-mute:  rgba(244, 246, 250, 0.50);
  --ink-faint: rgba(244, 246, 250, 0.32);
  --line:      rgba(244, 246, 250, 0.10);
  --line-soft: rgba(244, 246, 250, 0.06);
  /* moonlight on water — the only "color", barely there */
  --moon:      #ecd1a3;
  --glow:      rgba(232, 186, 116, 0.42);

  --font-zh:   "Noto Sans SC", system-ui, sans-serif;
  --font-zh-s: "Noto Serif SC", serif;
  --font-disp: "Spectral", "Noto Serif SC", Georgia, serif;
  --font-mono: "Space Grotesk", ui-monospace, monospace;

  --maxw: 1180px;
  --pad:  clamp(22px, 6vw, 80px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html {
  width: 100%;
  min-height: 100%;
  background: var(--bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-zh);
  font-weight: 300;
  line-height: 1.7;
  width: 100%;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(232,200,150,.22); color: #fff; }

/* per-language fonts — correct glyphs for CJK / clean latin elsewhere */
body[data-lang="zh-Hant"] { --font-zh: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  --font-zh-s: "Noto Serif TC", "Songti TC", "PingFang TC", serif; }
body[data-lang="ja"] { --font-zh: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  --font-zh-s: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif; }
body[data-lang="ko"] { --font-zh: "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  --font-zh-s: "Apple SD Gothic Neo", "Noto Serif KR", serif; }
body[data-lang="en"], body[data-lang="de"], body[data-lang="fr"], body[data-lang="it"] {
  --font-zh: "Space Grotesk", system-ui, -apple-system, "Helvetica Neue", sans-serif; }

/* ---------- shared atoms ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); width: 100%; }

.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
}
.en-tag {
  font-family: var(--font-disp);
  font-style: normal;
  font-weight: 300;
  letter-spacing: 0.04em;
}
.hair { height: 1px; background: var(--line); border: 0; width: 100%; }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.d5 { transition-delay: .40s; }

/* =================================================================
   NAV
   ================================================================= */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  height: 70px; display: flex; align-items: center;
  transition: background .5s var(--ease), backdrop-filter .5s var(--ease), border-color .5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 7, 11, 0.72);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border-bottom-color: var(--line-soft);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; }
.nav-brand img { height: 26px; opacity: 1; }
.nav-brand, .nav-right { position: relative; z-index: 2; }

/* 品牌 logo 语言切换：简体/繁体中文显示「vceau + 屿岸山石」整体 logo；
   其余语言只显示「vceau」，高度沿用整体 logo 高度（导航 26px / 页脚 23px），
   即放大填满原 logo 占位。顶部导航与底部页脚共用同一套规则。 */
.brand-logo--en { display: none; }
body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .brand-logo--full { display: none; }
body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .brand-logo--en { display: inline-block; }
/* 纯「vceau」logo 收到右侧语言框高度以内，避免 wordmark 过大 */
.nav-brand .brand-logo--en { height: 15px; }
.nav-links {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; justify-content: center; align-items: center;
  width: max-content; gap: clamp(18px, 3vw, 40px);
}
.nav-links a {
  font-family: var(--font-mono); font-size: 15px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-mute); transition: color .3s;
  position: relative; padding: 6px 0;
}
.nav-links a:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 22px; }
/* ---------- language dropdown ---------- */
.lang-select { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em;
  color: var(--ink-soft); background: transparent;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 13px;
  transition: border-color .3s, color .3s;
}
.lang-btn:hover { border-color: rgba(244,246,250,.32); color: var(--ink); }
.lang-btn .globe { opacity: .8; flex: none; }
.lang-btn .lang-cur { font-weight: 400; }
.lang-btn .chev { opacity: .6; transition: transform .35s var(--ease); }
.lang-select[data-open="true"] .lang-btn { border-color: rgba(244,246,250,.32); color: var(--ink); }
.lang-select[data-open="true"] .chev { transform: rotate(180deg); }
.lang-menu {
  position: absolute; top: calc(100% + 12px); right: 0; z-index: 70; min-width: 188px;
  list-style: none; margin: 0; padding: 7px;
  background: rgba(10, 13, 19, 0.86); backdrop-filter: blur(20px) saturate(130%);
  -webkit-backdrop-filter: blur(20px) saturate(130%);
  border: 1px solid var(--line); border-radius: 14px;
  box-shadow: 0 24px 60px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.05);
  opacity: 0; transform: translateY(-8px) scale(.98); pointer-events: none;
  transform-origin: top right; transition: opacity .28s var(--ease), transform .28s var(--ease);
}
.lang-select[data-open="true"] .lang-menu { opacity: 1; transform: none; pointer-events: auto; }
.lang-item {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 9px 13px; border-radius: 9px; cursor: pointer;
  font-family: var(--font-zh); font-size: 14px; font-weight: 300; color: var(--ink-soft);
  transition: background .2s, color .2s;
}
.lang-item:hover { background: rgba(255,255,255,.05); color: var(--ink); }
.lang-item .li-check { opacity: 0; color: var(--moon); font-size: 13px; transition: opacity .2s; }
.lang-item[aria-selected="true"] { color: var(--ink); }
.lang-item[aria-selected="true"] .li-check { opacity: 1; }
@media (max-width: 760px) { .nav-links { display: none; } }

/* =================================================================
   HERO — 水岸
   ================================================================= */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh; width: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  padding: 90px var(--pad) 60px;
  background:
    radial-gradient(68% 52% at 50% 32%, rgba(28,40,64,0.42) 0%, rgba(12,17,28,0) 62%),
    radial-gradient(130% 100% at 50% -10%, #0a0e16 0%, #070910 48%, var(--bg) 100%);
  overflow: hidden;
}
@supports (min-height: 100dvh) {
  .hero { min-height: 100dvh; }
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 42%;
  background: linear-gradient(to bottom, rgba(5,7,11,0) 0%, rgba(5,7,11,0.6) 58%, var(--bg) 100%);
  z-index: 1; pointer-events: none;
}
#stars { position: absolute; inset: 0; z-index: 0; }
.hero-inner { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }
.hero-mark { filter: drop-shadow(0 0 34px var(--glow)); will-change: transform; }
.hero-word { height: clamp(22px, 3.4vw, 30px); margin-top: clamp(26px, 4vw, 40px); opacity: .96; }
.hero-en {
  font-size: clamp(24px, 3.4vw, 36px); margin-top: clamp(22px, 3vw, 30px);
  color: var(--ink); white-space: nowrap;
}
.hero-zh {
  font-family: var(--font-zh); font-weight: 200; font-size: clamp(13px, 1.5vw, 15px);
  letter-spacing: 0.62em; padding-left: 0.62em; margin-top: 16px; color: var(--ink-mute);
}
.hero-vignette { position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(128% 98% at 50% 40%, transparent 46%, rgba(2,3,6,.42) 78%, rgba(1,2,4,.74) 100%); }
.scroll-cue {
  position: absolute;
  top: calc(100% + clamp(18px, 2.2vh, 28px));
  left: 50%;
  transform: translateX(-50%);
  bottom: auto;
  z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 9px;
  width: max-content;
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--ink-faint);
}
.scroll-cue span:first-child { padding-left: .34em; line-height: 1; }
.scroll-cue .ln { width: 1px; height: 38px; background: linear-gradient(var(--ink-mute), transparent);
  transform-origin: top; animation: cue 2.6s var(--ease) infinite; }
@keyframes cue { 0%{transform:scaleY(.3);opacity:.3} 45%{transform:scaleY(1);opacity:1} 100%{transform:scaleY(.3);opacity:.3} }

/* =================================================================
   SECTION scaffolding
   ================================================================= */
.section { position: relative; padding: clamp(96px, 14vh, 180px) 0; }
/* intro→story 衔接收紧：去掉中间大段留白，让上下更自然紧凑 */
.intro-section { padding-bottom: clamp(34px, 5vh, 60px); }
#story { scroll-margin-top: 94px; }
.eau { padding-top: clamp(34px, 5vh, 60px); }
.section-head { display: flex; flex-direction: column; gap: 22px; margin-bottom: clamp(48px, 7vw, 84px); }
.section-head .row { display: flex; align-items: baseline; gap: 18px; }
.section-title {
  font-family: var(--font-zh); font-weight: 200; line-height: 1.12;
  font-size: clamp(30px, 5vw, 58px); letter-spacing: 0.04em; color: var(--ink);
}
.section-sub {
  font-weight: 300; font-size: clamp(14px, 1.5vw, 16px); line-height: 1.9;
  color: var(--ink-mute); max-width: 56ch;
}

/* ---- intro statement band ---- */
.statement { text-align: center; }
.statement-kicker {
  display: block; margin: 0 auto clamp(40px, 6vw, 78px);
  font-family: var(--font-mono); font-weight: 400;
  font-size: var(--fs-meta); line-height: 1.3;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute);
}
.statement p {
  font-family: var(--font-zh); font-weight: 200;
  font-size: clamp(22px, 3.5vw, 40px); line-height: 1.6; letter-spacing: 0.03em;
  color: var(--ink); max-width: none; margin: 0 auto; white-space: nowrap;
}
/* 中英混排：AI 与同一行中文字保持一致字号 */
.statement p .lat-cap { font-size: 1em; font-weight: inherit; line-height: inherit; vertical-align: baseline; margin: 0 .06em; }
.statement .en-tag { font-size: clamp(15px, 1.8vw, 20px); color: var(--ink-mute); margin-top: 16px; display: block; letter-spacing: .02em; }
/* 引导金句：移至 note 之后，字号/字体/颜色与 note 完全一致
   （用 .statement .statement-lead 提升特异性，覆盖 .statement p 的大字号/渐变/nowrap） */
.statement .statement-lead {
  font-family: var(--font-disp); font-weight: 300;
  font-size: var(--fs-lead); line-height: 1.7; letter-spacing: .02em;
  color: var(--ink-mute); margin: 8px auto 0; max-width: none; display: block;
  white-space: normal; background: none; -webkit-text-fill-color: currentColor;
}

/* =================================================================
   屿岸山石 — four characters
   ================================================================= */
.story-intent {
  display: flex; justify-content: center; text-align: center;
  margin: 0 auto clamp(46px, 6vw, 76px);
}
.story-intent p {
  font-family: var(--font-zh); font-weight: 200;
  font-size: clamp(20px, 2.7vw, 32px); line-height: 1.55;
  letter-spacing: .06em; color: var(--ink);
  max-width: 28em;
}
.glyphs { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.glyph-cell {
  position: relative; padding: clamp(34px, 4vw, 56px) clamp(16px, 2vw, 30px) clamp(40px, 5vw, 60px);
  border-bottom: 1px solid var(--line); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 18px;
  transition: background .6s var(--ease);
}
.glyph-cell:first-child { border-left: 1px solid var(--line); }
.glyph-cell:hover { background: linear-gradient(180deg, rgba(232,186,116,.05), transparent); }
.glyph-top { display: flex; align-items: flex-end; justify-content: space-between; }
.glyph-char {
  font-family: var(--font-zh-s); font-weight: 300; font-size: clamp(64px, 8vw, 104px);
  line-height: 1; color: var(--ink); text-shadow: 0 0 30px rgba(232,186,116,.15);
}
.glyph-rom { font-family: var(--font-mono); font-size: 12px; letter-spacing: .26em; color: var(--ink-faint); text-transform: uppercase; display: flex; flex-direction: column; align-items: flex-end; gap: 3px; text-align: right; line-height: 1.2; }
.rom-py { color: var(--ink-soft); }
.rom-en { color: var(--ink-faint); }
.glyph-zh { font-weight: 300; font-size: clamp(15px, 1.6vw, 17px); color: var(--ink-soft); letter-spacing: .02em; line-height: 1.7; text-wrap: pretty; }

/* 外语界面：以本地化含义词为主、拼音为辅（含义词上移并提亮，拼音弱化） */
body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .glyph-rom { flex-direction: column-reverse; }
body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .rom-en { color: var(--ink-soft); font-size: 13px; letter-spacing: .18em; }
body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .rom-py { color: var(--ink-faint); opacity: .55; font-size: 11px; }
.glyph-en { font-family: var(--font-disp); font-style: italic; font-weight: 300; font-size: 16px; color: var(--ink-mute); line-height: 1.5; }
.glyphs-foot { text-align: center; margin-top: clamp(38px, 5vw, 60px);
  display: flex; flex-direction: column; align-items: center; gap: clamp(6px, 1vw, 12px); }
/* 收束句：沿用顶部品牌标题的暖金渐变风格，尺寸与原 foot 一致 */
.glyphs-foot .foot-line {
  margin: 0; font-family: var(--font-zh); font-weight: 200;
  font-size: var(--fs-lead); letter-spacing: .04em; line-height: 1.55;
  background: linear-gradient(180deg, #fbf4e9, #d9c3a3);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.glyphs-foot .foot-line .lat-cap { font-size: 1.15em; font-weight: 300; margin: 0 .1em; }

body:not([data-lang="zh-Hans"]):not([data-lang="zh-Hant"]) .glyphs-foot .foot-line {
  font-family: var(--font-disp);
  font-weight: 300;
  letter-spacing: .06em;
}

/* story sub-divider — eau half of the Story section */
.story-divide { display: flex; flex-direction: column; gap: 18px; margin-top: clamp(52px, 7vw, 86px);
  padding-top: 0; border-top: 0; }
.story-subtitle { font-family: var(--font-zh); font-weight: 200; line-height: 1.12;
  font-size: clamp(26px, 4vw, 46px); letter-spacing: .04em; color: var(--ink); }
@media (max-width: 820px) {
  .glyphs { grid-template-columns: repeat(2, 1fr); }
  .glyph-cell:nth-child(2n) { border-right: 1px solid var(--line); }
  .glyph-cell:nth-child(odd) { border-left: 1px solid var(--line); }
}

/* =================================================================
   eau — 之水意
   ================================================================= */
.eau { position: relative; }
.eau-grid {
  display: grid;
  grid-template-columns: minmax(390px, 450px) minmax(0, 820px);
  gap: clamp(76px, 8.4vw, 156px);
  align-items: start;
  width: min(1712px, calc(100vw - clamp(160px, 17vw, 340px)));
  max-width: none;
  margin-top: clamp(42px, 5vw, 62px);
  margin-left: 50%;
  translate: -50% 0;
  scroll-margin-top: clamp(96px, 14vh, 132px);
}
/* 左列按图 1 的 V·SO lockup 对齐，caption 与字标共用同一中轴 */
.eau-left { width: min(100%, 450px); max-width: 100%; padding-top: clamp(38px, 4vw, 58px); text-align: center; }
.eau-left .vso {
  position: relative; isolation: isolate;
  font-family: var(--font-disp); font-weight: 300; font-size: clamp(120px, 9vw, 168px);
  line-height: .92; letter-spacing: .045em; padding-left: .045em; display: inline-block; cursor: default;
  color: var(--ink);
  background: linear-gradient(110deg, var(--ink) 0%, var(--ink) 42%, #ffe9c6 50%, var(--ink) 58%, var(--ink) 100%);
  background-size: 220% 100%; background-position: 130% 0;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  transition: filter .5s var(--ease);
}
/* hover：与上方汉字一致的「一缕流动背光」——身后暖金辉光渐显 + 光带持续流动 + 字身金色光晕 */
.eau-left .vso::before {
  content: ""; position: absolute; inset: -22% -10%; z-index: -1; pointer-events: none;
  background: radial-gradient(58% 72% at 50% 50%, rgba(232,192,137,.22), transparent 66%);
  opacity: 0; filter: blur(8px); transition: opacity .5s var(--ease);
}
.eau-left .vso:hover::before { opacity: 1; }
.eau-left .vso:hover {
  animation: vsoSheen 1.9s linear infinite;
  filter: drop-shadow(0 0 24px rgba(232,192,137,.4));
}
@keyframes vsoSheen { from { background-position: 130% 0; } to { background-position: -30% 0; } }
.eau-left .vso em { font-style: italic; }
.eau-left .pron {
  font-family: var(--font-mono); letter-spacing: .36em; font-size: clamp(14px, 1vw, 18px);
  color: var(--ink-mute); margin-top: clamp(22px, 2.4vw, 34px); text-align: center;
  padding-left: .36em;
}
.eau-body {
  min-width: 0;
  width: min(100%, 820px);
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: clamp(4px, .8vw, 14px);
}
.eau-copy { width: min(100%, 780px); margin-inline: auto; }
.eau-title {
  margin: 0 0 clamp(30px, 3.4vw, 40px);
  font-family: var(--font-zh); font-weight: 300;
  font-size: clamp(24px, 1.76vw, 32px);
  line-height: 1.18; letter-spacing: .03em;
  color: var(--ink); text-align: center;
}
.eau-text {
  margin: 0;
  font-family: var(--font-mono); font-weight: 300;
  font-size: clamp(14px, 1vw, 18px);
  line-height: 2.05; letter-spacing: .18em;
  color: var(--ink-mute);
  text-align: center;
  text-wrap: pretty;
}
.eau-text-line {
  display: block;
}
.eau-text-detail,
.eau-text-detail-tail {
  margin-top: clamp(4px, .8vw, 10px);
}
/* flow —— 横向「水之流动线」：以流线区别于上方「屿岸山石」方阵卡片 */
.flow {
  --flow-char-size: clamp(34px, 2.45vw, 44px);
  --flow-gap: clamp(44px, 3.4vw, 68px);
  --flow-line-y: calc(var(--flow-char-size) * .96);
  display: flex; align-items: flex-start; justify-content: center; flex-wrap: nowrap;
  gap: var(--flow-gap);
  width: min(100%, 820px);
  margin-top: clamp(70px, 7vw, 90px);
  margin-inline: auto;
  padding: 4px 0 0;
}
.flow-step { position: relative; display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: none; padding: 0; border: 0; }
.flow-step .t {
  font-family: var(--font-zh-s); font-weight: 400; font-size: var(--flow-char-size);
  color: var(--ink); letter-spacing: .06em; padding-left: .06em; line-height: 1;
  text-shadow: 0 0 20px rgba(244,246,250,.10);
}
.flow-step .e {
  font-family: var(--font-disp); font-style: italic; font-weight: 300; font-size: clamp(19px, 1.25vw, 24px);
  color: rgba(244, 246, 250, .42); letter-spacing: .04em;
}
.flow-step:not(:last-child)::before {
  content: ""; position: absolute; top: var(--flow-line-y); left: 100%; width: var(--flow-gap); height: 1px;
  background: linear-gradient(90deg,
    rgba(116, 87, 45, .12),
    rgba(177, 130, 72, .46),
    rgba(242, 213, 165, .96),
    rgba(174, 202, 207, .42),
    rgba(116, 87, 45, .12));
  background-size: 260% 100%;
  box-shadow: 0 0 12px rgba(232,186,116,.24), 0 0 28px rgba(126,170,176,.08);
  animation: flowLine 3.6s linear infinite;
}
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; top: var(--flow-line-y); left: calc(100% + var(--flow-gap) / 2);
  width: 6px; height: 6px; border-radius: 50%; transform: translate(-50%, -50%);
  background: radial-gradient(circle, #fff3d6 0%, var(--moon) 44%, rgba(172,203,205,.42) 100%);
  box-shadow: 0 0 10px rgba(232,186,116,.78), 0 0 24px rgba(149,182,186,.22);
  animation: flowDot 2.2s ease-in-out infinite;
}
.flow-step:nth-child(2)::before, .flow-step:nth-child(2)::after { animation-delay: .34s; }
.flow-step:nth-child(3)::before, .flow-step:nth-child(3)::after { animation-delay: .68s; }
@keyframes flowLine { from { background-position: 140% 0; } to { background-position: -140% 0; } }
@keyframes flowDot {
  0%, 100% { opacity: .48; transform: translate(-50%, -50%) scale(.76); }
  48% { opacity: 1; transform: translate(-50%, -50%) scale(1.35); }
}
@media (max-width: 860px) {
  .eau-grid {
    width: 100%;
    margin-left: 0;
    translate: none;
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .eau-left { width: 100%; padding-top: 0; }
  .eau-copy { width: 100%; }
  .eau-title { text-align: left; margin-bottom: 24px; }
  .eau-text { font-size: clamp(18px, 5vw, 24px); }
  .flow { width: 100%; margin-left: 0; flex-wrap: wrap; gap: 26px clamp(30px, 8vw, 56px); margin-top: 42px; }
  .flow-step:not(:last-child)::before, .flow-step:not(:last-child)::after { display: none; }
}

/* =================================================================
   产品矩阵
   ================================================================= */
.cats { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: clamp(40px, 5vw, 60px); }
.cat-pill {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-mute); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px;
}
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 1.6vw, 22px); }
.product {
  position: relative; border: 1px solid var(--line); border-radius: 20px; padding: clamp(26px, 3vw, 34px);
  background: linear-gradient(170deg, rgba(255,255,255,.025), rgba(255,255,255,0) 60%);
  display: flex; flex-direction: column; gap: 22px; min-height: 230px;
  transition: border-color .5s var(--ease), transform .5s var(--ease), background .5s var(--ease);
  overflow: hidden;
}
.product::after { content:""; position:absolute; inset:0; border-radius:20px; pointer-events:none;
  background: radial-gradient(80% 60% at 50% -10%, rgba(232,186,116,.13), transparent 70%); opacity:0; transition: opacity .5s; }
.product:hover { transform: translateY(-4px); border-color: rgba(244,246,250,.2); }
.product:hover::after { opacity: 1; }
.app-icon {
  width: 76px; height: 76px; border-radius: 20px; flex: none; position: relative;
  background: radial-gradient(120% 100% at 50% 0%, #1b2230 0%, #0c111a 55%, #070a10 100%);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 10px 26px rgba(0,0,0,.5);
  display: grid; place-items: center;
}
.app-icon svg { filter: drop-shadow(0 0 8px rgba(236,196,130,.55)); }
.app-icon .refl { position:absolute; left:14%; right:14%; bottom:9px; height:1px;
  background: linear-gradient(90deg, transparent, rgba(240,210,150,.6), transparent); opacity:.6; }
.product-meta { display: flex; flex-direction: column; gap: 7px; }
.product-name { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.product-name .nm { font-family: var(--font-zh); font-weight: 400; font-size: 19px; color: var(--ink); letter-spacing: .01em; white-space: nowrap; flex: none; }
.product-name .en { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--ink-faint); text-transform: uppercase; }
.product-desc { font-weight: 300; font-size: 13.5px; line-height: 1.7; color: var(--ink-mute); }
.product-tag {
  align-self: flex-start; margin-top: 4px; font-family: var(--font-mono); font-size: 9.5px;
  letter-spacing: .2em; text-transform: uppercase; color: var(--ink-faint);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px;
  display: inline-flex; align-items: center; gap: 7px;
}
.product-tag .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--moon); box-shadow: 0 0 8px var(--moon);
  animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:.4} 50%{opacity:1} }
@media (max-width: 900px) { .products { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .products { grid-template-columns: 1fr; } }

/* =================================================================
   视觉系统
   ================================================================= */
.vsys-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2vw, 26px); }
.vsys-card {
  border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  background: var(--bg-2); display: flex; flex-direction: column;
}
.vsys-stage { aspect-ratio: 1 / 1; display: grid; place-items: center; position: relative; }
.vsys-stage img { width: 56%; height: auto; }
.vsys-stage.dark { background: radial-gradient(120% 100% at 50% 20%, #10141d, #06080d); }
.vsys-stage.light { background: linear-gradient(160deg, #e9edf2, #cdd5de); }
.vsys-stage.mono { background: #05070b; }
.vsys-cap { padding: 20px 22px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 5px; }
.vsys-cap .t { font-family: var(--font-mono); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink); }
.vsys-cap .d { font-size: 12.5px; color: var(--ink-mute); }
.sizes { display: flex; align-items: flex-end; gap: clamp(20px, 4vw, 48px); margin-top: clamp(40px, 5vw, 64px);
  padding: clamp(30px, 4vw, 48px); border: 1px solid var(--line); border-radius: 18px;
  background: radial-gradient(120% 140% at 50% -20%, #0d121b, #06080d); justify-content: center; flex-wrap: wrap; }
.size-item { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.size-item img { filter: drop-shadow(0 0 10px rgba(236,196,130,.42)); }
.size-item span { font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--ink-faint); }
@media (max-width: 760px) { .vsys-grid { grid-template-columns: 1fr; max-width: 380px; margin-inline: auto; } }

/* =================================================================
   CLOSING statement
   ================================================================= */
body[data-lang="en"] .hero-zh { visibility: hidden; }

/* =================================================================
   FOOTER
   ================================================================= */
.footer { border-top: 1px solid var(--line); padding: clamp(72px, 10vw, 120px) 0 46px; }
/* footer links stay airy; the slogan now sits in the lower-right metadata row. */
.footer-top {
  display: grid;
  grid-template-columns: repeat(2, minmax(150px, 220px));
  gap: clamp(60px, 12vw, 180px);
  align-items: start;
  justify-content: end;
}
.footer-statement {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .12em;
  color: var(--ink-faint);
  text-align: right;
  max-width: none;
}
.footer-statement em { font-style: normal; color: inherit; }
.footer-col h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 18px; font-weight: 400; }
.footer-col a, .footer-col .li { display: block; font-size: 14px; color: var(--ink-soft); padding: 6px 0; transition: color .3s; }
.footer-col a:hover { color: var(--ink); }
.footer-bot { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  margin-top: clamp(56px, 8vw, 90px); padding-top: 28px; border-top: 1px solid var(--line-soft); }
.footer-bot span { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--ink-faint); }
@media (max-width: 760px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: clamp(32px, 7vw, 48px); }
  .footer-statement { width: 100%; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .scroll-cue .ln, .product-tag .dot { animation: none !important; }
  html { scroll-behavior: auto; }
}