/* chanpio.work */
:root {
  --paper: #ffffff;
  --ink: #000000;
  --graphite: #6e6e73;
  --soft: #f2f2f4;
  --hairline: #e8e8ec;
  --blue: #3b8ef0;
  --night: #000000;
  --night-card: #1c1c1e;
  --night-line: #2c2c2e;
  --night-text: #f5f5f7;
  --night-dim: #a1a1a6;
  --r-xl: 48px;
  --r-lg: 32px;
  --r-md: 20px;
  --col: 680px;
  --wide: 1080px;
  --gutter: clamp(16px, 4vw, 40px);
  font-synthesis: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0b0b0c; --ink: #f5f5f7; --graphite: #a1a1a6; --soft: #1c1c1e; --hairline: #2c2c2e;
    --night: #161618; --night-card: #232326;
  }
}
:root[data-theme="dark"] {
  --paper: #0b0b0c; --ink: #f5f5f7; --graphite: #a1a1a6; --soft: #1c1c1e; --hairline: #2c2c2e;
  --night: #161618; --night-card: #232326;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 999px; }
.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 var(--gutter); }
.center { text-align: center; }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.03em; margin: 0; }
h1 { font-size: clamp(38px, 5.6vw, 64px); line-height: 1.12; }
h2 { font-size: clamp(30px, 4vw, 46px); line-height: 1.22; letter-spacing: -0.02em; }
.eyebrow { color: var(--blue); font-weight: 500; font-size: 16px; margin: 0 0 14px; letter-spacing: 0; }
.lede { color: var(--graphite); font-size: 18px; line-height: 1.6; margin: 20px auto 0; max-width: 46ch; }

/* Pills */
.pills { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px; text-decoration: none;
  font-weight: 500; font-size: 16px; line-height: 1; border: 1px solid transparent;
  transition: background .2s, color .2s, border-color .2s;
}
.pill.dark { background: var(--ink); color: var(--paper); }
.pill.dark:hover { background: var(--blue); color: #fff; }
.pill.soft { background: var(--soft); }
.pill.soft:hover { background: var(--hairline); }
.pill.light { background: #fff; color: #000; }
.pill.line { border-color: #fff; color: #fff; }
.pill.line:hover, .pill.light:hover { background: var(--blue); border-color: var(--blue); color: #fff; }

/* Header */
.site-header { position: fixed; inset: 0 0 auto; z-index: 20; padding: 12px var(--gutter); pointer-events: none; }
.bar {
  max-width: var(--wide); margin: 0 auto; pointer-events: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 8px 8px 8px 20px; border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 72%, transparent);
  backdrop-filter: saturate(1.6) blur(18px); -webkit-backdrop-filter: saturate(1.6) blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 18px; letter-spacing: -0.02em; }
.mark { width: 18px; height: 18px; border-radius: 50%; background: conic-gradient(from 200deg, #3b8ef0, #8b5cf6, #ff6fa6, #ffb341, #3b8ef0); }
.nav { display: flex; align-items: center; gap: 6px; }
.nav > a:not(.pill) { text-decoration: none; padding: 10px 12px; font-weight: 500; font-size: 16px; }
.nav > a:not(.pill):hover { color: var(--blue); }
.nav .pill { padding: 11px 18px; }
@media (max-width: 480px) { .nav > a[href$="#about"] { display: none; } }

/* Hero */
.hero { padding: 12px var(--gutter) 0; }
.hero-card {
  position: relative; overflow: hidden;
  height: min(88vh, 760px); min-height: 520px;
  border-radius: 0 0 var(--r-xl) var(--r-xl);
  background:
    radial-gradient(120% 70% at 50% 110%, #f7e9d6 0%, rgba(247,233,214,0) 60%),
    radial-gradient(90% 60% at 15% 85%, #e9e1ff 0%, rgba(233,225,255,0) 60%),
    linear-gradient(180deg, #cfe2f7 0%, #e6eef8 45%, #f6efe6 100%);
  display: grid; place-items: center;
}
.hero-copy { position: relative; z-index: 2; text-align: center; padding: 0 20px; color: #000; }
.hero-copy p { margin: 18px 0 0; font-size: clamp(18px, 2vw, 22px); font-weight: 500; letter-spacing: -0.01em; }
.scroll-cue { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); text-decoration: none; color: #6e6e73; font-size: 24px; z-index: 2; }

.chips { position: absolute; inset: 0; }
.chip {
  position: absolute; display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px 12px 12px; border-radius: 999px;
  background: rgba(255,255,255,.82); color: #111;
  box-shadow: 0 12px 30px -12px rgba(40,60,110,.35), inset 0 0 0 1px rgba(255,255,255,.9);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-weight: 500; font-size: 16px; white-space: nowrap;
}
.chip i {
  font-style: normal; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 14px; color: #fff;
}
.c1 { left: 6%;  top: 22%; --r: -6deg; } .c1 i { background: #3b8ef0; }
.c2 { left: 12%; top: 62%; --r: 4deg; }  .c2 i { background: #ff6fa6; }
.c3 { right: 9%; top: 18%; --r: 5deg; }  .c3 i { background: #22b07d; }
.c4 { right: 5%; top: 58%; --r: -4deg; } .c4 i { background: #8b5cf6; }
.c5 { left: 30%; top: 82%; --r: -3deg; } .c5 i { background: #ffb341; }
.c6 { right: 26%; top: 80%; --r: 3deg; } .c6 i { background: #c2733a; }
.c7 { left: 28%; top: 9%; --r: 3deg; font-size: 14px; opacity: .8; filter: blur(.6px); } .c7 i { background: #ff5a4f; }
.c8 { right: 30%; top: 7%; --r: -4deg; font-size: 14px; opacity: .8; filter: blur(.6px); } .c8 i { background: #111; }
.chip { transform: rotate(var(--r)); }
@media (prefers-reduced-motion: no-preference) {
  .chip { animation: float 7s ease-in-out infinite; }
  .c2 { animation-delay: -1.2s; } .c3 { animation-delay: -2.4s; } .c4 { animation-delay: -3.1s; }
  .c5 { animation-delay: -4.2s; } .c6 { animation-delay: -5s; } .c7 { animation-delay: -.6s; } .c8 { animation-delay: -2s; }
  @keyframes float {
    0%, 100% { transform: translateY(0) rotate(var(--r)); }
    50% { transform: translateY(-12px) rotate(var(--r)); }
  }
  .hero-copy { animation: rise .9s cubic-bezier(.2,.8,.2,1) both; }
  @keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
}
@media (max-width: 760px) {
  .chip { font-size: 13px; padding: 8px 12px 8px 8px; }
  .chip i { width: 22px; height: 22px; font-size: 11px; }
  .c1 { left: 4%; top: 16%; } .c3 { right: 4%; top: 12%; }
  .c2 { left: 4%; top: 72%; } .c4 { right: 4%; top: 66%; }
  .c5 { left: 18%; top: 86%; } .c6 { right: 10%; top: 82%; }
  .c7, .c8 { display: none; }
}

/* Intro + grid */
.intro { padding: clamp(80px, 12vw, 140px) var(--gutter) clamp(40px, 6vw, 64px); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 32px); padding-bottom: clamp(80px, 12vw, 140px); }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }
.card { text-decoration: none; display: block; }
.thumb { margin: 0; aspect-ratio: 4 / 3; border-radius: var(--r-lg); overflow: hidden; background: var(--soft); }
.thumb img, .thumb video { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2,.8,.2,1); }
.card:hover .thumb img { transform: scale(1.03); }
.thumb-word {
  height: 100%; display: grid; place-items: center; text-align: center; padding: 24px;
  background: linear-gradient(160deg, #cfe2f7, #efe6ff 60%, #f6efe6);
  color: #000; font-size: clamp(30px, 3.6vw, 44px); font-weight: 600; letter-spacing: -0.03em;
}
.card-text { padding: 20px 4px 0; }
.card-meta { color: var(--graphite); font-size: 15px; }
.card h3 { font-size: clamp(24px, 2.4vw, 28px); letter-spacing: -0.025em; margin: 4px 0 8px; }
.card:hover h3 { color: var(--blue); }
.card p { color: var(--graphite); margin: 0 0 14px; max-width: 46ch; }
.card-stat { display: inline-flex; gap: 6px; align-items: baseline; background: var(--soft); border-radius: 999px; padding: 7px 14px; font-size: 14px; color: var(--graphite); }
.card-stat b { color: var(--ink); font-size: 16px; }
@media (prefers-reduced-motion: reduce) { .card:hover .thumb img { transform: none; } }

/* Dark band */
.dark-band { background: var(--night); color: var(--night-text); padding: clamp(80px, 12vw, 140px) 0; }
.dark-band.rounded { border-radius: var(--r-xl); margin: 0 var(--gutter); }
@media (max-width: 760px) { .dark-band.rounded { margin: 0 8px; border-radius: 32px; } }
.dark-band .lede { color: var(--night-dim); }
.glyph { display: inline-grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: #fff; color: #000; font-size: 24px; margin-bottom: 28px; }
.loop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: clamp(56px, 8vw, 88px) 0 0; text-align: left; }
.loop > div { background: var(--night-card); border-radius: var(--r-lg); padding: 32px 28px 30px; }
.loop h3 { font-size: 22px; margin: 26px 0 8px; color: #fff; }
.loop p { color: var(--night-dim); margin: 0; }
.loop-icon { display: block; width: 72px; height: 72px; border-radius: 22px; position: relative;
  background: linear-gradient(145deg, #4a4a4f, #1f1f22); box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 10px 24px -10px #000; }
.loop-icon::after { content: ""; position: absolute; inset: 22px; border-radius: 50%; }
.loop-icon.k::after { background: radial-gradient(circle at 40% 35%, #9cc8ff, #3b8ef0); }
.loop-icon.a::after { inset: 26px 18px; border-radius: 999px; background: linear-gradient(90deg, #ff9cc2, #ff6fa6); }
.loop-icon.x::after { inset: 20px; border-radius: 10px; background: linear-gradient(145deg, #7ee0b5, #22b07d); }
@media (max-width: 760px) { .loop { grid-template-columns: 1fr; } }
.numbers { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 20px; background: var(--night-card); border-radius: var(--r-lg); padding: 28px; text-align: left; gap: 16px; }
.numbers b { display: block; font-size: clamp(30px, 3.4vw, 40px); font-weight: 600; letter-spacing: -0.03em; color: #fff; }
.numbers span { color: var(--night-dim); font-size: 15px; }
@media (max-width: 760px) { .numbers { grid-template-columns: 1fr 1fr; } }
.list-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin: clamp(80px, 10vw, 120px) 0 16px; }
.list-head a { text-decoration: none; font-weight: 500; white-space: nowrap; }
.list-head a:hover { color: var(--blue); }
.rows { border-top: 1px solid var(--night-line); }
.row {
  display: grid; grid-template-columns: 1fr auto auto 20px; gap: 20px; align-items: center;
  padding: 24px 0; border-bottom: 1px solid var(--night-line); text-decoration: none;
}
.r-title { font-weight: 500; font-size: 19px; }
.r-sub, .r-year { color: var(--night-dim); font-size: 15px; }
.chev { color: var(--night-dim); font-size: 22px; text-align: right; }
.row:hover .r-title, .row:hover .chev { color: var(--blue); }
@media (max-width: 640px) { .row { grid-template-columns: 1fr 20px; gap: 4px 12px; } .r-sub { grid-column: 1; } .r-year { grid-column: 1; } .chev { grid-row: 1 / span 3; grid-column: 2; } }

/* Footer */
.site-footer { padding: clamp(100px, 14vw, 160px) 0 40px; }
.site-footer .lede { max-width: none; }
.fine { color: var(--graphite); font-size: 14px; margin-top: clamp(72px, 10vw, 120px); }

/* Case study */
.case-head { padding: clamp(130px, 16vw, 180px) var(--gutter) clamp(40px, 6vw, 64px); }
.case-head h1 { max-width: 18ch; margin: 0 auto; font-size: clamp(34px, 5vw, 58px); }
.case-head .meta { color: var(--graphite); margin: 20px 0 0; }
.cover { margin: 0 0 clamp(48px, 7vw, 80px); }
.cover img, .cover video { width: 100%; max-height: 680px; object-fit: cover; border-radius: var(--r-xl); background: var(--soft); }
@media (max-width: 760px) { .cover img, .cover video { border-radius: var(--r-lg); } }
.case-head + .wrap + .dark-band { border-radius: var(--r-xl); margin: 0 var(--gutter); padding: clamp(56px, 8vw, 96px) 0; }
@media (max-width: 760px) { .case-head + .wrap + .dark-band { margin: 0 8px; border-radius: 32px; } }
.case-grid { display: grid; grid-template-columns: 220px 1fr; gap: clamp(24px, 5vw, 72px); }
.rail dl { margin: 0; font-size: 15px; }
.rail dl > div + div { margin-top: 20px; }
.rail dt { color: var(--night-dim); margin-bottom: 4px; }
.rail dd { margin: 0; color: var(--night-text); }
.summary { font-size: clamp(19px, 1.9vw, 22px); line-height: 1.55; margin: 0; letter-spacing: -0.01em; }
@media (max-width: 820px) {
  .case-grid { grid-template-columns: 1fr; }
  .rail dl { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
  .rail dl > div + div { margin-top: 0; }
}
.outcomes { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-top: clamp(40px, 6vw, 64px); }
.outcomes > div { background: var(--night-card); border-radius: var(--r-md); padding: 22px 22px 20px; }
.outcomes b { display: block; font-size: clamp(30px, 3.4vw, 40px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; color: #fff; }
.outcomes b em { font-style: normal; color: #7db6ff; }
.outcomes span { display: block; color: var(--night-dim); font-size: 15px; margin-top: 8px; line-height: 1.4; }

.body { max-width: var(--col); margin: 0 auto; padding-top: clamp(24px, 4vw, 40px); }
.body h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.2; margin: clamp(64px, 9vw, 104px) 0 16px; }
.body h3 { font-size: 19px; font-weight: 600; margin: 28px 0 6px; letter-spacing: -0.015em; }
.body p, .body li { color: color-mix(in srgb, var(--ink) 80%, var(--paper)); }
.body ul { padding-left: 20px; }
.body li { margin: 6px 0; }

.fig, .cover, .thumb { margin: 0; }
.body .fig { margin: 36px 0; }
.fig img, .fig video { width: 100%; height: auto; border-radius: var(--r-md); background: var(--soft); }
.body .fig.bleed { margin-left: calc((var(--col) - min(var(--wide) - 2 * var(--gutter), 100vw - 2 * var(--gutter))) / 2); margin-right: calc((var(--col) - min(var(--wide) - 2 * var(--gutter), 100vw - 2 * var(--gutter))) / 2); }
@media (max-width: 760px) { .body .fig.bleed { margin-left: 0; margin-right: 0; } }
.fig.narrow { max-width: 340px; margin-left: auto !important; margin-right: auto !important; }
.fig.row { display: grid; gap: 12px; align-items: start; }
.fig.row.r2 { grid-template-columns: 1fr 1fr; }
.fig.row.r3 { grid-template-columns: repeat(3, 1fr); }
.fig.row figcaption { grid-column: 1 / -1; }
@media (max-width: 600px) { .fig.row.r2, .fig.row.r3 { grid-template-columns: 1fr; } }
.fig figcaption { font-size: 14px; color: var(--graphite); margin-top: 10px; text-align: center; }
.steps .fig { margin: 16px 0 0; }

.callout { background: var(--soft); border-radius: var(--r-md); padding: 22px 24px; margin: 28px 0; }
.callout p { margin: 0; color: var(--ink); font-weight: 500; }
.quote { font-size: clamp(22px, 2.4vw, 26px); line-height: 1.4; letter-spacing: -0.02em; font-weight: 500; margin: 40px 0; text-align: center; color: var(--ink) !important; }
.quote cite { display: block; font-size: 15px; color: var(--graphite); font-style: normal; font-weight: 400; margin-top: 10px; }

.compare { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin: 24px 0; }
.compare > div { background: var(--soft); border-radius: var(--r-md); padding: 20px 22px; border: 2px solid transparent; }
.compare > div.pick { border-color: var(--blue); background: color-mix(in srgb, var(--blue) 8%, var(--paper)); }
.compare h4 { margin: 0 0 8px; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.compare ul { margin: 0; padding-left: 18px; font-size: 15px; }
.compare .con { color: var(--graphite); }
.tag { display: inline-block; font-size: 13px; color: #fff; background: var(--blue); font-weight: 600; border-radius: 999px; padding: 3px 10px; margin-bottom: 10px; }

.steps { counter-reset: s; list-style: none; padding: 0 !important; }
.steps > li { counter-increment: s; position: relative; padding-left: 48px; margin: 24px 0; }
.steps > li::before {
  content: counter(s); position: absolute; left: 0; top: 0;
  width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: var(--paper);
  font-size: 14px; font-weight: 600; display: grid; place-items: center;
}
.steps h3 { margin: 2px 0 4px; }

.lesson { margin: clamp(64px, 9vw, 104px) 0 0; background: var(--night); color: var(--night-text); border-radius: var(--r-lg); padding: clamp(32px, 5vw, 48px); text-align: center; }
.lesson .cap { color: #7db6ff; margin: 0 0 12px; font-weight: 500; }
.lesson p { color: var(--night-dim) !important; margin: 0; }
.lesson p.big { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.3; letter-spacing: -0.025em; font-weight: 600; color: #fff !important; margin: 0 auto 12px; max-width: 24ch; }

.next { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; margin: clamp(64px, 9vw, 104px) 0 0; padding-top: 28px; border-top: 1px solid var(--hairline); }
.next-link { text-decoration: none; text-align: right; }
.next-link small { display: block; color: var(--graphite); font-size: 14px; }
.next-link b { font-weight: 600; font-size: 22px; letter-spacing: -0.02em; }
.next-link:hover b { color: var(--blue); }
@media (max-width: 600px) { br.lg { display: none; } }