/* =========================================================
   BDE Creative · editorial brutalism
   Ink + hot pink + cyan on a pink-tinted paper.
   Sharp corners, visible grid, hard offset shadows.
   ========================================================= */

:root {
  --paper: #FFF4F9;
  --paper-2: #FCE7F3;
  --ink: #0E0B0D;
  --ink-2: #1C1418;
  --wine: #831843;          /* foreground accent on paper (9:1) */
  --muted: #5A3247;         /* body-muted on paper (>7:1) */
  --muted-dark: #EBCFDD;    /* body-muted on ink (>12:1) */
  --pink: #EC4899;          /* primary · black text on it (6:1) */
  --pink-soft: #F472B6;
  --pink-deep: #BE185D;     /* pink text on paper (5.9:1) */
  --pink-light: #FF6FB5;    /* pink text on ink */
  --cyan: #0891B2;          /* CTA · black text on it (5.7:1) */
  --cyan-light: #22D3EE;    /* CTA on ink */
  --line: rgba(14, 11, 13, .12);
  --line-dark: rgba(255, 244, 249, .12);

  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Playfair Display", "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 68px;
  --bw: 3px;                 /* brutal border width */
  --shadow: 6px 6px 0 var(--ink);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --t-fast: 160ms;
  --t-med: 240ms;
  --t-reveal: 380ms;
  --surface: #FFFFFF;
  --error: #B91C1C;          /* on paper 6.4:1 */
  --shadow-sm: 4px 4px 0 var(--ink);
  --shadow-lg: 10px 10px 0 var(--ink);
  /* z-index scale */
  --z-layer: 1;
  --z-content: 2;
  --z-overlay: 3;
  --z-nav: 90;
  --z-header: 100;
  --z-progress: 110;
  --z-skip: 200;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
html[lang="zh-CN"] body { line-height: 1.75; letter-spacing: .01em; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, select, input, textarea { font: inherit; color: inherit; }
a, button, select, summary, label { cursor: pointer; }
a, button, select, summary, input, textarea { touch-action: manipulation; }
input, textarea { cursor: text; }

:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.dark :focus-visible, .pink :focus-visible { outline-color: var(--cyan-light); }
.pink :focus-visible, .cobalt :focus-visible { outline-color: var(--ink); }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: var(--z-skip); background: var(--ink); color: var(--paper); padding: 10px 16px; }
.skip:focus { top: 12px; }

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

/* ---------- scroll progress ---------- */
.progress { position: fixed; inset: 0 0 auto 0; height: 4px; z-index: var(--z-progress); pointer-events: none; }
.progress span { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--pink), var(--cyan)); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- type ---------- */
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -.035em; line-height: 1.02; text-wrap: balance; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 { letter-spacing: 0; line-height: 1.2; }
h2 { font-size: clamp(34px, 5.4vw, 72px); }
h1 em, h2 em, h3 em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--pink-deep);
}
html[lang="zh-CN"] h1 em, html[lang="zh-CN"] h2 em { font-style: normal; font-weight: 800; font-family: var(--font-sans); }
.dark h1 em, .dark h2 em, .dark h3 em { color: var(--pink-light); }
.cobalt h2 em { color: var(--ink); }
.pink h2 em { color: var(--ink); text-decoration: underline; text-decoration-thickness: 4px; text-underline-offset: 6px; }

.label {
  display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
  font-size: 13px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--wine);
}
.label::before { content: ""; width: 14px; height: 14px; background: var(--pink); border: 2px solid var(--ink); }
.dark .label { color: var(--pink-light); }
.dark .label::before { border-color: var(--paper); }
.pink .label { color: var(--ink); }
.pink .label::before { background: var(--cyan-light); }

.sec-head { margin-bottom: clamp(36px, 6vw, 72px); max-width: 920px; }
.sec-head.split { max-width: none; display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px 64px; align-items: end; }
.sec-lead { margin: 18px 0 0; font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 560px; }
.sec-head.split .sec-lead { margin: 0; }
.dark .sec-lead { color: var(--muted-dark); }
.pink .sec-lead { color: var(--ink); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 12px 22px;
  border: var(--bw) solid var(--ink);
  font-weight: 700; font-size: 16px; text-decoration: none; line-height: 1.2;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), background-color var(--t-med) var(--ease), color var(--t-med) var(--ease);
}
.btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: square; }
.btn:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }
.btn-accent { background: var(--cyan); color: var(--ink); }
.btn-ink { background: var(--ink); color: var(--paper); box-shadow: 4px 4px 0 var(--pink); }
.btn-ink:hover { box-shadow: 6px 6px 0 var(--pink); }
.btn-line { background: var(--paper); color: var(--ink); }
.btn-line:hover { background: var(--pink); }
.dark .btn { border-color: var(--paper); box-shadow: 4px 4px 0 var(--paper); }
.dark .btn:hover { box-shadow: 6px 6px 0 var(--pink-light); }
.dark .btn-accent { background: var(--cyan-light); }
.btn-xl { min-height: 64px; padding: 16px 32px; font-size: 20px; }

.mini-cta {
  margin: clamp(32px, 5vw, 56px) 0 0; padding-top: 22px; border-top: var(--bw) solid var(--ink);
  display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; font-size: 18px; font-weight: 500;
}
.dark .mini-cta { border-color: var(--paper); }
.mini-cta a { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-weight: 800; text-decoration: underline; text-decoration-color: var(--pink); text-decoration-thickness: 3px; text-underline-offset: 6px; transition: color var(--t-fast); }
.mini-cta a svg { transition: transform var(--t-fast) var(--ease); }
.mini-cta a:hover svg { transform: translateX(6px); }
.mini-cta a:hover { color: var(--pink-deep); }
.dark .mini-cta a:hover { color: var(--pink-light); }
.mini-cta svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.5; }

/* ---------- header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header); height: var(--header-h);
  background: var(--paper); border-bottom: var(--bw) solid var(--ink);
}
.header-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; flex-shrink: 0; text-decoration: none; }
.brand-logo { height: 34px; width: auto; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 28px; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.nav ul a {
  display: block; padding: 10px 12px; font-size: 15px; font-weight: 600; text-decoration: none;
  border: 2px solid transparent; transition: background-color var(--t-fast), border-color var(--t-fast);
}
.nav ul a:hover { border-color: var(--ink); }
.nav ul a.is-active { background: var(--ink); color: var(--paper); }
.nav-cta { min-height: 44px; padding: 8px 16px; font-size: 15px; }
.header-tools { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  min-width: 48px; min-height: 44px; padding: 6px 12px; background: var(--paper);
  border: 2px solid var(--ink); font-weight: 800; font-size: 14px;
  transition: background-color var(--t-fast), color var(--t-fast);
}
.lang-toggle:hover { background: var(--pink); }
.burger { display: none; width: 48px; height: 44px; background: var(--ink); border: 0; position: relative; }
.burger i { position: absolute; left: 13px; right: 13px; top: 21px; height: 3px; background: var(--paper); transition: transform var(--t-med) var(--ease); }
.burger i:nth-of-type(1) { transform: translateY(-5px); }
.burger i:nth-of-type(2) { transform: translateY(5px); }
.burger[aria-expanded="true"] i:nth-of-type(1) { transform: rotate(45deg); }
.burger[aria-expanded="true"] i:nth-of-type(2) { transform: rotate(-45deg); }

/* ---------- sections & parallax layers ---------- */
section { position: relative; scroll-margin-top: var(--header-h); }
.section { padding: clamp(80px, 11vw, 150px) 0; overflow: hidden; }
.section > .wrap, .hero > .wrap, .final-cta > .wrap { position: relative; z-index: var(--z-content); }
.dark { background: var(--ink); color: var(--paper); }
.cobalt { background: var(--cyan-light); color: var(--ink); }
.pink { background: var(--pink); color: var(--ink); }
.layers { position: absolute; inset: 0; z-index: var(--z-layer); pointer-events: none; overflow: hidden; }
.layer { position: absolute; will-change: transform; }
.shape { border: var(--bw) solid var(--ink); }

/* visible editorial grid on paper sections */
.capabilities, .work, .faq, .hero {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: -1px -1px;
}

/* ---------- hero ---------- */
.hero { min-height: 100svh; padding: calc(var(--header-h) + clamp(40px, 8vh, 96px)) 0 clamp(64px, 10vh, 120px); overflow: hidden; display: flex; align-items: center; }
.hero-inner { width: 100%; }
.kicker {
  display: inline-block; margin: 0 0 24px; padding: 6px 12px; background: var(--ink); color: var(--paper);
  font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
}
.hero-title { font-size: clamp(46px, 9vw, 132px); max-width: 12ch; line-height: .96; }
html[lang="zh-CN"] .hero-title { max-width: 11em; font-size: clamp(40px, 7vw, 100px); line-height: 1.12; }
.hero-title em { display: inline; }
.hero-bottom { margin-top: clamp(28px, 4vw, 48px); display: grid; grid-template-columns: minmax(0, 560px) auto; gap: 24px 48px; align-items: end; }
.hero-lead { margin: 0; max-width: 60ch; font-size: clamp(17px, 1.7vw, 21px); color: var(--muted); background: var(--paper); padding: 4px 0; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-proof { list-style: none; padding: 0; margin: clamp(40px, 6vw, 72px) 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border: var(--bw) solid var(--ink); background: var(--paper); box-shadow: var(--shadow); }
.hero-proof li { padding: 18px 20px; font-weight: 700; font-size: 16px; line-height: 1.35; display: flex; gap: 12px; align-items: flex-start; }
.hero-proof li + li { border-left: var(--bw) solid var(--ink); }
.hero-proof svg { flex: none; width: 22px; height: 22px; margin-top: 1px; fill: none; stroke: var(--pink-deep); stroke-width: 2.5; stroke-linecap: square; }

.s-sun { width: clamp(200px, 24vw, 360px); aspect-ratio: 1; right: -9vw; top: 62%; background: var(--pink); box-shadow: 10px 10px 0 var(--ink); transform: rotate(8deg); }
.s-cobalt { width: clamp(90px, 10vw, 150px); aspect-ratio: 1; right: 4vw; top: 16%; background: var(--cyan); }
.s-ring { width: clamp(140px, 16vw, 240px); aspect-ratio: 1; right: 18vw; top: 60%; background: transparent; border-width: 3px; border-style: dashed; }
.s-lime { width: 48px; height: 48px; right: 3vw; top: 44%; background: var(--paper); box-shadow: 6px 6px 0 var(--ink); }
.s-squiggle { border: 0; width: clamp(140px, 16vw, 220px); left: 4vw; bottom: 6%; color: var(--pink-deep); }
.s-star { border: 0; width: clamp(40px, 4vw, 64px); left: 2vw; top: 16%; color: var(--ink); }
.grid-lines { inset: -20% 0; border: 0; background:
  linear-gradient(90deg, transparent calc(50% - 1px), var(--line) calc(50% - 1px), var(--line) calc(50% + 1px), transparent calc(50% + 1px)); }

.scroll-cue { position: absolute; left: var(--gutter); bottom: 14px; z-index: var(--z-overlay); min-height: 44px; display: flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; text-decoration: none; }
.scroll-cue i { width: 3px; height: 36px; background: var(--ink); position: relative; overflow: hidden; }
.scroll-cue i::after { content: ""; position: absolute; left: 0; right: 0; height: 12px; background: var(--pink); animation: cue 1.6s var(--ease) infinite; }
@keyframes cue { from { top: -12px; } to { top: 36px; } }

/* ---------- ticker ---------- */
.ticker { position: relative; background: var(--pink); border-block: var(--bw) solid var(--ink); overflow: hidden; padding: 14px 64px 14px 0; }
.ticker-track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.ticker-track span { display: inline-flex; align-items: center; gap: 28px; padding-right: 28px; font-size: clamp(20px, 2.6vw, 32px); font-weight: 800; letter-spacing: -.02em; white-space: nowrap; }
.ticker-track span::after { content: ""; width: 14px; height: 14px; background: var(--ink); transform: rotate(45deg); }
@keyframes marquee { to { transform: translateX(-50%); } }

.motion-toggle {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%); z-index: var(--z-overlay);
  width: 44px; height: 44px; display: grid; place-items: center;
  background: var(--paper); border: 2px solid var(--ink); box-shadow: 3px 3px 0 var(--ink);
  transition: background-color var(--t-fast);
}
.motion-toggle:hover { background: var(--cyan-light); }
/* solid backdrop so moving text never runs under the control */
.ticker::after, .partner-strip::after { content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 64px; z-index: 2; }
.ticker::after { background: var(--pink); border-left: var(--bw) solid var(--ink); }
.partner-strip::after { background: var(--paper-2); }
.motion-toggle svg { width: 18px; height: 18px; fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linejoin: miter; }
.motion-toggle .i-play { display: none; }
.motion-toggle[aria-pressed="true"] .i-play { display: block; fill: var(--ink); }
.motion-toggle[aria-pressed="true"] .i-pause { display: none; }
.motion-paused .ticker-track, .motion-paused .partner-track,
.ticker:hover .ticker-track, .ticker:focus-within .ticker-track,
.partner-strip:hover .partner-track, .partner-strip:focus-within .partner-track { animation-play-state: paused; }

/* ---------- beliefs ---------- */
.beliefs .r-glow { width: 46vw; aspect-ratio: 1; right: -12vw; top: -10%; background: var(--pink); border-color: var(--pink); opacity: .16; }
.beliefs .r-ring { width: 26vw; aspect-ratio: 1; left: -8vw; bottom: -6%; border-color: var(--cyan-light); border-style: dashed; opacity: .5; }
.belief-list { list-style: none; margin: 0; padding: 0; background: var(--ink); display: grid; grid-template-columns: repeat(2, 1fr); border: var(--bw) solid var(--paper); }
.belief { padding: clamp(24px, 3.4vw, 44px); transition: background-color var(--t-med), color var(--t-med); }
.belief:nth-child(odd) { border-right: var(--bw) solid var(--paper); }
.belief:nth-child(-n+2) { border-bottom: var(--bw) solid var(--paper); }
.belief h3 { font-family: var(--font-serif); font-style: italic; font-weight: 600; letter-spacing: -.01em; font-size: clamp(28px, 3.4vw, 46px); line-height: 1.08; color: var(--pink-light); }
html[lang="zh-CN"] .belief h3 { font-family: var(--font-sans); font-style: normal; font-weight: 900; }
.belief p { margin: 14px 0 0; color: var(--muted-dark); max-width: 460px; }
.belief:hover { background: var(--pink); color: var(--ink); }
.belief:hover h3 { color: var(--ink); }
.belief:hover p { color: var(--ink); }

/* ---------- capabilities ---------- */
.big-word { left: -2vw; top: 4%; font-size: clamp(90px, 20vw, 300px); font-weight: 900; letter-spacing: -.06em; line-height: 1; color: transparent; -webkit-text-stroke: 2px rgba(14, 11, 13, .12); white-space: nowrap; }
.pillar-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; align-items: start; }
.pillar-card {
  grid-column: span 6; background: var(--paper); border: var(--bw) solid var(--ink); padding: clamp(22px, 3vw, 34px);
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.pillar-card:nth-child(1) { grid-column: span 7; background: var(--ink); color: var(--paper); }
.pillar-card:nth-child(2) { grid-column: span 5; margin-top: clamp(0px, 6vw, 80px); }
.pillar-card:nth-child(3) { grid-column: span 5; background: var(--pink); }
.pillar-card:nth-child(4) { grid-column: span 7; }
.pillar-card:hover { transform: translate(-4px, -4px); box-shadow: 8px 8px 0 var(--pink); }
.pillar-card:nth-child(1):hover { box-shadow: 8px 8px 0 var(--cyan); }
.pillar-card:nth-child(3):hover { box-shadow: 8px 8px 0 var(--ink); }
.pillar-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 26px; }
.svc-icon { width: 48px; height: 48px; display: grid; place-items: center; background: var(--pink); border: 2px solid var(--ink); }
.pillar-card:nth-child(1) .svc-icon { border-color: var(--paper); }
.pillar-card:nth-child(3) .svc-icon { background: var(--paper); }
.svc-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linecap: square; stroke-linejoin: miter; }
.svc-tag { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; padding: 5px 10px; border: 2px solid currentColor; }
.pillar-name { font-size: clamp(32px, 3.6vw, 50px); margin-bottom: 8px; }
.cap { padding-top: 20px; margin-top: 20px; border-top: 2px solid currentColor; }
.cap h4 { margin: 0 0 6px; font-size: clamp(19px, 1.8vw, 23px); font-weight: 800; letter-spacing: -.01em; line-height: 1.2; }
.cap p { margin: 0 0 12px; color: var(--muted); }
.pillar-card:nth-child(1) .cap p { color: var(--muted-dark); }
.pillar-card:nth-child(3) .cap p { color: var(--ink); }
.cap-items { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.cap-items li { padding: 5px 11px; border: 2px solid currentColor; font-size: 14px; font-weight: 600; line-height: 1.35; }

/* ---------- studio ---------- */
.studio .a-disc { width: 34vw; aspect-ratio: 1; right: -10vw; top: -14%; background: var(--pink); box-shadow: 12px 12px 0 var(--ink); transform: rotate(-10deg); }
.studio .a-bar { width: 60vw; height: 70px; left: -10vw; bottom: 12%; background: var(--paper); transform: rotate(-4deg); }
.about-inner { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(36px, 6vw, 96px); align-items: start; }
.studio .label { color: var(--ink); }
.about-body { margin: 24px 0 0; font-size: clamp(17px, 1.6vw, 20px); max-width: 560px; }
.pillars { display: grid; gap: 20px; }
.pillar { background: var(--paper); border: var(--bw) solid var(--ink); padding: 22px 24px; box-shadow: var(--shadow); transition: transform var(--t-med) var(--ease); }
.pillar:nth-child(2) { margin-left: clamp(0px, 4vw, 48px); }
.pillar:nth-child(3) { margin-left: clamp(0px, 8vw, 96px); }
.pillar:hover { transform: translateX(-6px); }
.pillar h3 { font-family: var(--font-serif); font-style: italic; font-weight: 600; font-size: 28px; color: var(--pink-deep); letter-spacing: -.01em; }
html[lang="zh-CN"] .pillar h3 { font-family: var(--font-sans); font-style: normal; font-weight: 800; }
.pillar p { margin: 8px 0 0; }

/* ---------- how we work ---------- */
.how .p-sun { width: 30vw; aspect-ratio: 1; left: -12vw; top: auto; bottom: -6%; background: transparent; border-color: var(--pink-light); border-width: 3px; border-style: dashed; transform: rotate(14deg); }
.phases { list-style: none; margin: 0; padding: 0; background: var(--ink); display: grid; grid-template-columns: repeat(4, 1fr); border: var(--bw) solid var(--paper); }
.phase { padding: clamp(20px, 2.4vw, 30px); display: flex; flex-direction: column; position: relative; transition: background-color var(--t-med), color var(--t-med); }
.phase + .phase { border-left: var(--bw) solid var(--paper); }
.phase + .phase::before { content: ""; position: absolute; left: -14px; top: 34px; width: 22px; height: 22px; background: var(--pink); border: var(--bw) solid var(--paper); transform: rotate(45deg); }
.phase h3 { font-family: var(--font-serif); font-style: italic; font-weight: 700; letter-spacing: -.01em; font-size: clamp(34px, 3.4vw, 50px); color: var(--pink-light); }
html[lang="zh-CN"] .phase h3 { font-family: var(--font-sans); font-style: normal; font-weight: 900; }
.phase-line { margin: 10px 0 0; font-weight: 800; font-size: 18px; line-height: 1.3; }
.phase > p:not(.phase-line) { margin: 12px 0 22px; color: var(--muted-dark); font-size: 1rem; }
.phase-io { margin: auto 0 0; display: grid; gap: 12px; padding-top: 16px; border-top: 2px solid var(--line-dark); }
.phase-io dt { font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan-light); }
.phase-io dd { margin: 4px 0 0; font-size: .9375rem; }
.phase:hover { background: rgba(255, 244, 249, .06); }

/* ---------- selected work ---------- */
.work-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: var(--bw) solid var(--ink); background: var(--paper); }
.case { padding: 26px 24px 30px; display: flex; flex-direction: column; position: relative; overflow: hidden; transition: background-color var(--t-med), color var(--t-med); }
.case:nth-child(3n+1), .case:nth-child(3n+2) { border-right: var(--bw) solid var(--ink); }
.case:nth-child(-n+3) { border-bottom: var(--bw) solid var(--ink); }
.case-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.case-art { width: 52px; height: 52px; flex: none; }
.case-art svg { width: 100%; height: 100%; }
.case-cat { font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; padding: 4px 9px; border: 2px solid currentColor; }
.case h3 { font-family: var(--font-serif); font-style: italic; font-weight: 700; letter-spacing: -.01em; font-size: clamp(26px, 2.6vw, 34px); margin-top: 26px; }
html[lang="zh-CN"] .case h3 { font-family: var(--font-sans); font-style: normal; font-weight: 900; }
.case .sample { display: inline-block; margin-top: 8px; font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--wine); }
.case-story { margin: 18px 0 0; display: grid; gap: 4px; }
.case-story dt { margin-top: 10px; font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--pink-deep); }
.case-story dd { margin: 0; font-size: 1rem; color: var(--muted); }
.case:hover { background: var(--ink); color: var(--paper); }
.case:hover .case-story dd { color: var(--muted-dark); }
.case:hover .sample, .case:hover .case-story dt { color: var(--pink-light); }

/* ---------- partners ---------- */
.partners { padding: 48px 0 56px; background: var(--paper-2); border-block: var(--bw) solid var(--ink); overflow: hidden; }
.partner-strip { position: relative; overflow: hidden; margin-top: 8px; padding-right: 64px; }
.partner-track { display: flex; width: max-content; animation: marquee 46s linear infinite; }
.partner-track span { padding: 0 40px; font-size: clamp(24px, 3vw, 40px); font-weight: 800; letter-spacing: -.03em; white-space: nowrap; border-right: var(--bw) solid var(--ink); }
.partner-track span:nth-child(even) { font-family: var(--font-serif); font-style: italic; font-weight: 600; letter-spacing: 0; }

/* ---------- faq ---------- */
.faq-inner { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.faq .sec-head { position: sticky; top: calc(var(--header-h) + 32px); }
.faq-list { border-top: var(--bw) solid var(--ink); }
.faq-list details { border-bottom: var(--bw) solid var(--ink); background: var(--paper); }
.faq-list summary {
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 22px 18px; font-weight: 700; font-size: clamp(17px, 1.7vw, 21px); line-height: 1.35;
  transition: background-color var(--t-fast);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { background: var(--paper-2); }
.faq-list summary svg { flex: none; width: 28px; height: 28px; padding: 4px; background: var(--pink); border: 2px solid var(--ink); fill: none; stroke: var(--ink); stroke-width: 2.5; transition: transform var(--t-med) var(--ease); }
.faq-list details[open] summary svg { transform: rotate(45deg); }
.faq-list details p { margin: 0; padding: 0 18px 24px; color: var(--muted); max-width: 640px; }

/* ---------- final CTA ---------- */
.final-cta { padding: clamp(80px, 12vw, 160px) 0; overflow: hidden; }
.final-cta .f-block { width: 26vw; aspect-ratio: 1; right: -12vw; top: -24%; background: var(--pink); border-color: var(--paper); box-shadow: 14px 14px 0 var(--cyan-light); transform: rotate(12deg); }
.final-inner { display: flex; flex-direction: column; align-items: flex-start; gap: 36px; }
.final-cta h2 { font-size: clamp(42px, 8vw, 116px); max-width: 13ch; }
html[lang="zh-CN"] .final-cta h2 { max-width: 12em; }

/* ---------- contact ---------- */
.contact .c-ring { width: 30vw; aspect-ratio: 1; right: -10vw; bottom: -10%; background: transparent; border-style: dashed; }
.contact .c-dot { width: 90px; height: 90px; left: 46%; top: 8%; background: var(--cyan-light); box-shadow: 6px 6px 0 var(--ink); }
.contact-inner { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.4fr); gap: clamp(36px, 6vw, 88px); align-items: start; }
.contact-info { margin: 36px 0 0; display: grid; gap: 0; border-top: var(--bw) solid var(--ink); }
.contact-info div { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 14px 0; border-bottom: 2px solid var(--ink); }
.contact-info dt { font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; padding-top: 3px; }
.contact-info dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.contact-info a { display: inline-block; padding: 6px 0; text-decoration-thickness: 2px; text-underline-offset: 4px; }
/* brief builder: fill-in-the-blanks sentence */
.brief-form { position: relative; background: var(--paper); border: var(--bw) solid var(--ink); box-shadow: var(--shadow-lg); padding: clamp(22px, 3vw, 36px); }
.brief-intro { margin: 0 0 18px; font-weight: 700; }
.brief-req { display: block; font-weight: 500; font-size: 14px; color: var(--muted); }
.brief-line {
  display: flex; flex-wrap: wrap; align-items: flex-start; gap: 10px 12px;
  padding: 16px 0; border-top: 2px solid var(--line);
  font-size: clamp(20px, 2vw, 26px); font-weight: 800; letter-spacing: -.02em; line-height: 1.3;
}
html[lang="zh-CN"] .brief-line { letter-spacing: 0; gap: 10px 8px; }
.brief-words { padding-top: 8px; }
.blank { display: inline-flex; flex-direction: column; gap: 4px; flex: 1 1 180px; min-width: 150px; max-width: 100%; }
.blank-idea { flex-basis: 100%; }
.blank-email { flex-basis: 260px; }
.blank input {
  width: 100%; min-height: 48px; padding: 6px 4px; background: transparent;
  border: 0; border-bottom: var(--bw) solid var(--ink);
  font-size: clamp(20px, 2vw, 26px); font-weight: 700; letter-spacing: -.01em; color: var(--pink-deep);
  transition: background-color var(--t-fast), box-shadow var(--t-fast);
}
.blank input:hover { background: var(--paper-2); }
.blank label, .field label, .chips-legend {
  font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); line-height: 1.4;
}
html[lang="zh-CN"] .blank label, html[lang="zh-CN"] .field label, html[lang="zh-CN"] .chips-legend { letter-spacing: .04em; font-size: 13px; }
.blank-help { font-size: 14px; font-weight: 500; letter-spacing: 0; color: var(--muted); line-height: 1.4; }
.req { color: var(--error); margin-left: 2px; }
.opt { text-transform: none; letter-spacing: 0; font-weight: 600; }
.brief-form input:focus-visible, .brief-form textarea:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }
.brief-form [aria-invalid="true"]:not([type="radio"]):not([type="checkbox"]) { border-color: var(--error); box-shadow: 0 3px 0 var(--error); }

/* chips: real radio/checkbox inputs, visually styled as pills */
.chips { border: 0; margin: 0; padding: 0; min-width: 0; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chips legend.chips-legend { float: left; width: 100%; margin-bottom: 8px; padding: 0; }
.chip { position: relative; display: inline-flex; }
.chip input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.chip-face {
  display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 8px 14px;
  border: 2px solid var(--ink); background: var(--surface); font-size: 16px; font-weight: 700; letter-spacing: 0; line-height: 1.2;
  transition: background-color var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast) var(--ease);
}
.chip-face svg { width: 16px; height: 16px; fill: none; stroke: var(--ink); stroke-width: 3; display: none; }
.chip:hover .chip-face { background: var(--paper-2); }
.chip input:checked + .chip-face { background: var(--pink); box-shadow: var(--shadow-sm); transform: translate(-2px, -2px); }
.chip input:checked + .chip-face svg { display: block; }
.chip input:focus-visible + .chip-face { outline: 3px solid var(--cyan); outline-offset: 3px; }
.chips.is-invalid .chip-face { border-color: var(--error); }
.chips .field-error { flex-basis: 100%; }
.brief-line > .chips { flex: 0 1 auto; }

.brief-noscript { display: grid; gap: 18px; }
.brief-extras { margin-top: 8px; padding-top: 20px; border-top: var(--bw) solid var(--ink); display: grid; grid-template-columns: 1fr 1fr; gap: 22px 24px; }
.brief-extras-title { grid-column: 1 / -1; margin: 0; font-weight: 800; font-size: 18px; }
.brief-extras .chips-rooms { grid-column: 1 / -1; }
.field { display: grid; gap: 6px; align-content: start; }
.field input, .field textarea {
  width: 100%; min-height: 48px; padding: 10px 12px; background: var(--surface); border: 2px solid var(--ink);
  font-size: 16px; font-weight: 500;
}
.field textarea { resize: vertical; min-height: 96px; }
.brief-extras .field:last-child { grid-column: 1 / -1; }
.field-error { display: flex; gap: 8px; align-items: flex-start; margin: 2px 0 0; font-size: 14px; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--error); line-height: 1.4; }
.field-error[hidden] { display: none; }
.field-error svg { flex: none; width: 18px; height: 18px; margin-top: 1px; fill: none; stroke: currentColor; stroke-width: 2.5; }
.form-foot { margin-top: 24px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; }
.form-note { margin: 0; font-size: 14px; color: var(--muted); flex: 1 1 220px; }
.form-note.is-error { color: var(--error); font-weight: 700; }
.form-note.is-ok { color: var(--ink); font-weight: 700; }
.form-note:focus { outline: none; }
.form-note:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
.form-note.is-ok::before { content: ""; display: inline-block; width: 12px; height: 12px; margin-right: 8px; background: var(--cyan); border: 2px solid var(--ink); vertical-align: -1px; }
.btn[disabled] { opacity: .5; cursor: progress; transform: none; box-shadow: none; }
.brief-form[aria-busy="true"] .brief-line, .brief-form[aria-busy="true"] .brief-extras { opacity: .7; }
/* honeypot: off-screen for people, still in the form for bots */
.hp { position: absolute !important; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }

/* ---------- footer ---------- */
.site-footer { padding: 64px 0 28px; border-top: var(--bw) solid var(--pink); }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; }
.footer-logo { width: 240px; height: auto; }
.footer-brand p { margin: 18px 0 0; color: var(--muted-dark); max-width: 420px; }
.footer-nav { display: grid; grid-template-columns: repeat(2, max-content); gap: 10px 48px; justify-content: end; align-content: start; }
.footer-nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; font-weight: 600; padding: 4px 0; border-bottom: 2px solid transparent; transition: border-color var(--t-fast); }
.footer-nav a:hover { border-color: var(--pink-light); }
.footer-bottom { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding-top: 24px; border-top: 1px solid var(--line-dark); font-size: 14px; color: var(--muted-dark); }
.footer-bottom p { margin: 0; }
.footer-bottom a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; }

/* ---------- reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity var(--t-reveal) var(--ease), transform var(--t-reveal) var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .nav ul a { padding: 8px 8px; font-size: 14px; }
  .nav { gap: 16px; }
}
@media (max-width: 1023px) {
  :root { --header-h: 62px; }
  .burger { display: block; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; z-index: var(--z-nav);
    flex-direction: column; align-items: stretch; gap: 20px;
    background: var(--paper); border-bottom: var(--bw) solid var(--ink);
    padding: 20px var(--gutter) 28px;
    transform: translateY(-110%); visibility: hidden;
    transition: transform var(--t-med) var(--ease), visibility 0s linear var(--t-med);
  }
  .nav.is-open { transform: none; visibility: visible; transition: transform var(--t-med) var(--ease); }
  .nav ul { flex-direction: column; gap: 0; }
  .nav ul a { padding: 14px 4px; font-size: 22px; font-weight: 800; border: 0; border-bottom: 2px solid var(--line); }
  .nav ul a.is-active { background: transparent; color: var(--pink-deep); }
  .header-tools { margin-left: auto; }
  .sec-head.split { grid-template-columns: 1fr; align-items: start; }
  .hero-bottom { grid-template-columns: 1fr; }
  .pillar-card:nth-child(n) { grid-column: span 12; margin-top: 0; }
  .phases { grid-template-columns: repeat(2, 1fr); }
  .phase:nth-child(n) { border-left: 0; }
  .phase:nth-child(even) { border-left: var(--bw) solid var(--paper); }
  .phase:nth-child(-n+2) { border-bottom: var(--bw) solid var(--paper); }
  .phase + .phase::before { display: none; }
  .about-inner, .contact-inner, .faq-inner { grid-template-columns: 1fr; }
  .faq .sec-head { position: static; }
  .work-grid { grid-template-columns: repeat(2, 1fr); }
  .case:nth-child(n) { border-right: 0; border-bottom: var(--bw) solid var(--ink); }
  .case:nth-child(odd) { border-right: var(--bw) solid var(--ink); }
  .case:nth-last-child(-n+2) { border-bottom: 0; }
}
@media (max-width: 767px) {
  body { font-size: 1rem; }
  .phase-io dd { font-size: 1rem; }
  .brand-logo { height: 28px; }
  .hero-proof { grid-template-columns: 1fr; }
  .hero-proof li + li { border-left: 0; border-top: var(--bw) solid var(--ink); }
  .s-sun { opacity: .9; top: auto; bottom: 4%; right: -24vw; }
  .s-ring, .s-star, .s-lime { display: none; }
  .belief-list { grid-template-columns: 1fr; }
  .belief:nth-child(n) { border-right: 0; border-bottom: var(--bw) solid var(--paper); }
  .belief:last-child { border-bottom: 0; }
  .phases { grid-template-columns: 1fr; }
  .phase:nth-child(n) { border-left: 0; border-bottom: var(--bw) solid var(--paper); }
  .phase:last-child { border-bottom: 0; }
  .work-grid { grid-template-columns: 1fr; }
  .case:nth-child(n) { border-right: 0; border-bottom: var(--bw) solid var(--ink); min-height: 0; }
  .case:last-child { border-bottom: 0; }
  .brief-form { box-shadow: 6px 6px 0 var(--ink); }
  .brief-line { flex-direction: column; align-items: stretch; gap: 6px; }
  .brief-words { padding-top: 0; }
  .brief-punct, .lead-punct { display: none; }
  .blank { flex-basis: auto; min-width: 0; width: 100%; }
  .brief-extras { grid-template-columns: 1fr; }
  .contact-info div { grid-template-columns: 1fr; gap: 2px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav { justify-content: start; }
  .pillar:nth-child(n) { margin-left: 0; }
  .btn-xl { width: 100%; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .layer { translate: none !important; rotate: none !important; }
  .ticker-track, .partner-track { animation: none; flex-wrap: wrap; width: auto; }
}