:root {
  --paper: oklch(0.965 0.003 70);
  --surface: oklch(0.995 0 0);
  --ink: oklch(0.17 0.015 32);
  --ink-soft: oklch(0.34 0.012 32);
  --muted: oklch(0.48 0.01 32);
  --faint: oklch(0.62 0.008 32);
  --line: oklch(0.84 0.008 32);
  --line-soft: oklch(0.9 0.005 32);
  --accent: oklch(0.62 0.205 34);
  --accent-hover: oklch(0.54 0.19 34);
  --accent-soft: oklch(0.93 0.045 34);
  --signal: oklch(0.79 0.17 77);
  --success: oklch(0.53 0.13 153);
  --radius: 8px;
  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "DIN Alternate", "Avenir Next Condensed", "SF Mono", monospace;
  --type-hero: clamp(52px, 5.5vw, 82px);
  --type-display: clamp(40px, 4.6vw, 62px);
  --type-title: clamp(30px, 3vw, 42px);
  --type-body-lg: clamp(17px, 1.2vw, 19px);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

html { scroll-padding-top: 88px; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  text-autospace: normal;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(circle at 14% 18%, oklch(0.92 0.025 34 / .45), transparent 28rem);
}

#grain { display: none; }

::selection { background: var(--signal); color: var(--ink); }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }

h1, h2, h3 {
  word-break: normal;
  word-break: auto-phrase;
}

p, li { text-wrap: pretty; }

:where(a, button, input, select):focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

.container { width: min(1240px, calc(100vw - 64px)); }

.container { margin-inline: auto; }

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: oklch(0.965 0.003 70 / .92);
  border-bottom-color: oklch(0.17 0.015 32 / .12);
  transition: background .25s ease, box-shadow .25s ease;
}

.nav.is-scrolled {
  background: oklch(0.98 0.002 70 / .96);
  box-shadow: 0 4px 8px oklch(0.17 0.015 32 / .06);
}

.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; padding: 12px 0; gap: 24px; }

.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); font-size: 16px; font-weight: 700; letter-spacing: -.015em; }

.brand-mark {
  display: block;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 0;
  background: transparent;
  object-fit: contain;
}

.brand-copy { display: grid; gap: 1px; line-height: 1; }
.brand-copy strong { font-size: 16px; font-weight: 750; letter-spacing: -.02em; }
.brand-copy small { color: var(--muted); font-family: var(--font-mono); font-size: 8px; font-weight: 750; letter-spacing: .08em; }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { color: var(--ink-soft); font-size: 15px; font-weight: 600; letter-spacing: .01em; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 4px;
  background: var(--accent);
  color: white;
  font-weight: 650;
  transition: transform .25s var(--ease-out), background .25s ease;
}

.nav-cta:hover { background: var(--accent-hover); transform: translateY(-2px); }

.nav-burger {
  display: none;
  width: 42px;
  height: 42px;
  position: relative;
  flex: none;
  border: 1px solid oklch(0.17 0.015 32 / .24);
  border-radius: 4px;
  background: transparent;
}

.nav-burger i { position: absolute; left: 10px; right: 10px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease-out), opacity .2s ease, top .3s var(--ease-out); }
.nav-burger i:nth-child(1) { top: 14px; }
.nav-burger i:nth-child(2) { top: 20px; }
.nav-burger i:nth-child(3) { top: 26px; }
.nav-burger.open i:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-burger.open i:nth-child(2) { opacity: 0; }
.nav-burger.open i:nth-child(3) { top: 20px; transform: rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  padding: 8px 4vw 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.nav-mobile.open { display: flex; }
.nav-mobile a { display: flex; align-items: center; justify-content: space-between; min-height: 58px; border-bottom: 1px solid var(--line-soft); font-size: 16px; }
.nav-mobile a::after { content: "→"; color: var(--faint); }
.nav-mobile a:last-child { border-bottom: 0; }
.nav-mobile a.active { color: var(--accent); }

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-burger { display: block; }
}

@media (max-width: 420px) {
  .brand { gap: 9px; }
  .brand-mark { width: 36px; height: 36px; }
  .brand-copy small { display: none; }
}

/* Home: conversion lab */
.home-page .hero {
  position: relative;
  min-height: min(900px, 100vh);
  padding: 132px 0 72px;
  overflow: hidden;
  border-bottom: 0;
  background: var(--ink);
  color: oklch(0.98 0 0);
}

.home-page .hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto auto;
  width: 46%;
  height: 100%;
  background: var(--accent);
}

.home-page .hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: oklch(1 0 0 / .18);
}

.lab-hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(430px, .78fr);
  align-items: center;
  gap: clamp(48px, 7vw, 108px);
  min-height: calc(min(900px, 100vh) - 204px);
}

.hero-copy { max-width: 710px; }

.lab-label {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin-bottom: 28px;
  padding: 4px 10px;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.hero-copy h1 {
  margin: 0;
  font-size: var(--type-hero);
  font-weight: 720;
  line-height: 1.03;
  letter-spacing: -.025em;
  text-wrap: pretty;
}

.hero-copy h1 span, .hero-copy h1 em { display: block; }
.hero-copy h1 em { color: var(--signal); font-style: normal; }

.hero-copy .lead {
  max-width: 31em;
  margin: 30px 0 0;
  color: oklch(0.87 0.008 32);
  font-size: var(--type-body-lg);
  line-height: 1.8;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.hero-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 4px;
  font-weight: 650;
  transition: transform .25s var(--ease-out), background .25s ease, color .25s ease;
}

.hero-action.primary { background: var(--accent); color: white; }
.hero-action.secondary { color: white; outline: 1px solid oklch(1 0 0 / .38); outline-offset: -1px; }
.hero-action:hover { transform: translateY(-3px); }
.hero-action.primary:hover { background: var(--signal); color: var(--ink); }
.hero-action.secondary:hover { background: white; color: var(--ink); }

.hero-proof {
  position: relative;
  display: flex;
  min-height: 570px;
  flex-direction: column;
  background: oklch(0.985 0 0);
  color: var(--ink);
  box-shadow: 18px 18px 0 oklch(0.17 0.015 32 / .28);
  transform: translate3d(var(--proof-x, 0), var(--proof-y, 0), 0) rotate(1.2deg);
  transition: transform .45s var(--ease-out);
}

.proof-top, .proof-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
}

.proof-top { border-bottom: 1px solid oklch(0.17 0.015 32 / .16); }
.proof-top::after { content: "● LIVE"; color: var(--accent); }

.proof-stage {
  position: relative;
  flex: 1;
  min-height: 420px;
  overflow: hidden;
  background: oklch(0.91 0.008 32);
}

.proof-stage .proof-main {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(.78) contrast(1.04);
}

.proof-stage .proof-data {
  position: absolute;
  right: 14px;
  bottom: 14px;
  width: 64%;
  background: white;
  box-shadow: 0 6px 8px oklch(0.17 0.015 32 / .22);
}

.proof-caption { min-height: 76px; }
.proof-caption span { max-width: 18ch; color: var(--muted); }
.proof-caption strong { color: var(--accent); font-size: 22px; letter-spacing: -.02em; }

.home-page .list { padding: clamp(72px, 8vw, 120px) 0 96px; }
.home-page [data-rv] { opacity: 1; transform: none; }

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(280px, .45fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 48px;
}

.section-intro h2 {
  max-width: 15ch;
  margin: 0;
  font-size: var(--type-display);
  line-height: 1.1;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.section-intro p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.85; }

.feat, .bcard {
  border-color: oklch(0.17 0.015 32 / .2);
  border-radius: 12px;
  box-shadow: none;
  transition: transform .35s var(--ease-out), border-color .25s ease;
}

.feat { grid-template-columns: 1.08fr .92fr; min-height: 440px; margin-bottom: 20px; }
.feat:hover, .bcard:hover { border-color: var(--accent); box-shadow: none; transform: translateY(-5px); }

.feat-cover, .bcard-cover { position: relative; background: var(--ink) !important; }
.feat-cover { min-height: 440px; }
.feat-cover img, .bcard-cover img { width: 100%; height: 100%; object-fit: cover; }
.feat-cover img { filter: grayscale(.15) contrast(1.08); }

.case-stamp {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 8px 10px;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.feat-body { padding: clamp(30px, 4vw, 56px); justify-content: center; }
.feat-tag, .bcard-tag { padding: 0; background: transparent; font-family: var(--font-body); font-size: 13px; font-weight: 650; letter-spacing: 0; }

.feat-body h2 {
  max-width: 17ch;
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.03em;
  text-wrap: balance;
}

.feat-body p { color: var(--ink-soft); }
.feat-meta { border-top-color: var(--line); }

.cards { grid-template-columns: 1.12fr .88fr; gap: 20px; }
.bcard-cover { height: 290px; }
.bcard-cover img { filter: saturate(.85) contrast(1.04); }
.bcard-body { padding: 30px; }
.bcard-body h3 { font-family: var(--font-body); font-size: clamp(22px, 2vw, 28px); font-weight: 700; line-height: 1.28; letter-spacing: -.025em; text-wrap: balance; }

.cta-strip {
  position: relative;
  margin-bottom: 0;
  padding: 44px 48px;
  border-radius: 12px;
  background: var(--accent);
  overflow: hidden;
}

.cta-strip::after {
  content: "TEST → LEARN → SCALE";
  position: absolute;
  right: 24px;
  bottom: -20px;
  color: oklch(1 0 0 / .13);
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 78px);
  font-weight: 800;
  white-space: nowrap;
}

.cta-strip > * { position: relative; z-index: 1; }
.cta-strip h3 { font-family: var(--font-body); font-size: clamp(24px, 2.6vw, 34px); font-weight: 700; letter-spacing: -.025em; }
.cta-strip p { color: oklch(0.96 0.01 34); }
.cta-strip .btn { border-radius: 4px; background: var(--ink); font-weight: 650; }
.cta-strip .btn:hover { background: var(--signal); color: var(--ink); }

/* Article: evidence-first reading */
.article-page .a-head {
  position: relative;
  padding: 132px 0 56px;
  border-bottom: 0;
  background: var(--ink);
  color: white;
  overflow: hidden;
}

.article-page .a-head::after {
  content: "";
  position: absolute;
  right: -8vw;
  top: 76px;
  width: 38vw;
  height: 100%;
  background: var(--accent);
}

.article-page .a-head-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, .72fr);
  align-items: center;
  gap: clamp(44px, 7vw, 96px);
  width: min(1120px, calc(100vw - 64px));
  max-width: none;
}

.article-head-copy { min-width: 0; }

.article-page .a-tag {
  margin-bottom: 24px;
  padding: 6px 10px;
  border-radius: 0;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

.article-page .a-head h1 {
  max-width: 18ch;
  margin-bottom: 24px;
  font-family: var(--font-body);
  font-size: clamp(42px, 4.3vw, 60px);
  font-weight: 720;
  line-height: 1.16;
  letter-spacing: -.025em;
  text-wrap: pretty;
}

.article-page .a-meta { color: oklch(0.79 0.005 32); }

.article-cover {
  position: relative;
  min-height: 390px;
  margin: 0;
  background: white;
  box-shadow: 16px 16px 0 oklch(0.17 0.015 32 / .28);
  transform: rotate(1deg);
}

.article-cover img { width: 100%; height: 390px; object-fit: cover; object-position: center; }
.article-cover figcaption { position: absolute; left: 12px; right: 12px; bottom: 12px; padding: 10px 12px; background: var(--ink); color: white; font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: .04em; }

.progress { height: 4px; background: var(--signal); transform: scaleX(0); transform-origin: left; transition: transform .08s linear; }

.article-page .a-wrap {
  width: min(1120px, calc(100vw - 64px));
  max-width: none;
  padding: 72px 0 32px;
}

@media (min-width: 1100px) {
  .article-page .a-wrap { grid-template-columns: 210px minmax(0, 680px); justify-content: space-between; gap: 72px; }
  .article-page .toc { scrollbar-width: thin; }
  .article-page .toc .toc-title { color: var(--accent); font-family: var(--font-body); font-size: 12px; font-weight: 700; letter-spacing: .02em; }
  .article-page .toc a { margin-bottom: 2px; padding: 8px 10px; border: 0; border-radius: 4px; color: var(--muted); }
  .article-page .toc a:hover, .article-page .toc a.on { border: 0; background: var(--ink); color: white; }
}

.article-page .a-content { max-width: 680px; }
.article-page .a-content > [data-rv] { opacity: 1; transform: none; }

.article-page .a-content h2 {
  margin-top: 72px;
  font-family: var(--font-body);
  font-size: clamp(28px, 2.7vw, 36px);
  font-weight: 750;
  line-height: 1.3;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.article-page .a-content h3 { margin-top: 46px; font-size: 21px; line-height: 1.4; letter-spacing: -.01em; }
.article-page .a-content h4 { font-size: 18px; }
.article-page .a-content h4::before { width: 8px; height: 8px; border-radius: 50%; }
.article-page .a-content p, .article-page .a-content li { color: var(--ink-soft); font-size: 17px; line-height: 1.9; letter-spacing: .005em; text-wrap: pretty; }

.article-page .a-content blockquote {
  margin: 36px 0;
  padding: 26px 28px;
  border: 0;
  border-radius: 8px;
  background: var(--accent-soft);
  box-shadow: none;
  color: var(--ink);
}

.article-page .a-content blockquote::before { content: "关键判断"; display: block; margin-bottom: 10px; color: var(--accent); font-size: 12px; font-weight: 750; }

.article-page .a-content img {
  margin: 38px auto;
  border: 0;
  border-radius: 8px;
  box-shadow: 0 6px 8px oklch(0.17 0.015 32 / .16);
}

.article-page .a-content table { border-radius: 8px; box-shadow: none; outline: 1px solid var(--line); }
.article-page .a-content th { background: var(--ink); color: white; }
.article-page .a-content hr { margin: 56px 0; background: var(--line); }

.article-page .a-cta, .article-page .related { width: min(960px, calc(100vw - 64px)); max-width: none; }
.article-page .a-cta { border-radius: 12px; background: var(--accent); }
.article-page .a-cta h3 { font-family: var(--font-body); font-weight: 700; letter-spacing: -.02em; }
.article-page .a-cta .btn { border-radius: 4px; background: var(--ink); font-weight: 650; }
.article-page .a-cta .btn:hover { background: var(--signal); color: var(--ink); }

.article-page .related .r-title { color: var(--accent); font-family: var(--font-body); font-size: 13px; font-weight: 700; letter-spacing: 0; }
.article-page .r-card { border-color: oklch(0.17 0.015 32 / .2); border-radius: 8px; box-shadow: none; }
.article-page .r-card:hover { border-color: var(--accent); box-shadow: none; }
.article-page .r-card h4 { font-family: var(--font-body); font-size: 18px; font-weight: 700; letter-spacing: -.015em; }

.footer { background: var(--ink); }

.footer { padding: 34px 0; color: oklch(1 0 0 / .62); font-size: 14px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-inner > div { display: flex; gap: 24px; flex-wrap: wrap; }
.footer a:hover { color: white; }

/* Marketing homepage */
.marketing-hero {
  position: relative;
  min-height: min(920px, 100vh);
  padding: 138px 0 72px;
  overflow: hidden;
  background: var(--ink);
  color: white;
}

.marketing-hero::after {
  content: "";
  position: absolute;
  top: 76px;
  right: 0;
  bottom: 0;
  width: 43%;
  background: var(--accent);
}

.marketing-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(430px, .78fr);
  align-items: center;
  gap: clamp(56px, 7vw, 112px);
  min-height: calc(min(920px, 100vh) - 210px);
}

.marketing-copy { max-width: 720px; }

.marketing-label {
  display: inline-flex;
  margin-bottom: 28px;
  padding: 6px 10px;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .07em;
}

.marketing-copy h1 {
  margin: 0;
  font-size: var(--type-hero);
  font-weight: 720;
  line-height: 1.03;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.marketing-copy h1 strong { display: block; color: var(--signal); font-weight: inherit; }
.marketing-copy > p:not(.evidence-note) { max-width: 34em; margin: 26px 0 0; color: oklch(0.85 0.008 32); font-size: var(--type-body-lg); line-height: 1.8; }

.marketing-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.marketing-page .hero-action.secondary { color: white; }

.evidence-note { display: flex; gap: 14px 22px; flex-wrap: wrap; margin: 28px 0 0; color: oklch(0.72 0.008 32); font-size: 12px; }
.evidence-note span { display: inline-flex; align-items: center; gap: 7px; }
.evidence-note span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); }

.marketing-visual {
  position: relative;
  display: block;
  min-height: 585px;
  padding: 52px 22px 22px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 18px 18px 0 oklch(0.17 0.015 32 / .28);
  transform: rotate(1deg);
  transition: transform .45s var(--ease-out);
}

.marketing-visual:hover { transform: rotate(0) translateY(-6px); }
.visual-index { position: absolute; top: 17px; left: 22px; font-family: var(--font-mono); font-size: 11px; font-weight: 800; letter-spacing: .06em; }
.visual-index::after { content: "● VERIFIED"; margin-left: 24px; color: var(--accent); }
.visual-main { width: 100%; height: 430px; object-fit: cover; object-position: center; filter: saturate(.8) contrast(1.05); }
.visual-result { position: absolute; left: -42px; right: 20px; bottom: 20px; display: grid; grid-template-columns: 1.5fr .6fr; align-items: center; background: var(--ink); color: white; box-shadow: 0 6px 8px oklch(0.17 0.015 32 / .24); }
.visual-result img { width: 100%; min-height: 115px; object-fit: cover; background: white; }
.visual-result p { margin: 0; padding: 16px; }
.visual-result p span, .visual-result p strong { display: block; }
.visual-result p span { color: var(--signal); font-size: 11px; font-weight: 750; }
.visual-result p strong { margin-top: 5px; font-size: 16px; line-height: 1.35; }

.proof-ribbon { background: var(--signal); color: var(--ink); overflow: hidden; }
.proof-ribbon .container { display: flex; align-items: center; justify-content: space-between; gap: 22px; min-height: 62px; white-space: nowrap; }
.proof-ribbon span { font-family: var(--font-mono); font-size: 11px; font-weight: 800; letter-spacing: .05em; }
.proof-ribbon b { font-size: 14px; }

.home-services { padding: clamp(88px, 10vw, 150px) 0; }
.home-section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .42fr); align-items: end; gap: 56px; margin-bottom: 58px; }
.home-section-head h2 { max-width: 17ch; margin: 0; font-size: var(--type-display); font-weight: 720; line-height: 1.1; letter-spacing: -.025em; text-wrap: balance; }
.home-section-head p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.85; }

.service-layout { display: grid; grid-template-columns: .86fr 1.14fr; gap: 20px; }
.service-lead { position: relative; display: flex; min-height: 480px; overflow: hidden; flex-direction: column; justify-content: space-between; padding: clamp(34px, 4vw, 54px); border-radius: 12px; background: var(--ink); color: white; transition: transform .35s var(--ease-out); }
.service-lead:hover { transform: translateY(-5px); }
.service-lead > div, .service-arrow { position: relative; z-index: 2; }
.service-lead span:first-child { color: var(--signal); font-size: 13px; font-weight: 750; }
.service-lead h3 { max-width: 11ch; margin: 22px 0; font-size: clamp(32px, 3.4vw, 48px); line-height: 1.16; letter-spacing: -.025em; }
.service-lead p { max-width: 15em; margin: 0; color: oklch(0.78 0.008 32); }
.service-lead-illustration { position: absolute; right: 24px; bottom: 24px; z-index: 1; width: clamp(148px, 14vw, 190px); height: auto; border: 3px solid var(--surface); border-radius: 7px; box-shadow: 8px 8px 0 oklch(0.67 0.16 55 / .3); transform: rotate(2.5deg); transition: transform .35s var(--ease-out); }
.service-lead:hover .service-lead-illustration { transform: rotate(0) translateY(-3px); }
.service-arrow { color: white !important; font-size: 15px !important; }

.service-stack { border-top: 1px solid var(--ink); }
.service-stack a { position: relative; display: grid; grid-template-columns: 145px minmax(0, 1fr) auto; align-items: center; gap: 28px; min-height: 154px; padding: 26px 8px; border-bottom: 1px solid var(--ink); transition: color .25s ease, transform .3s var(--ease-out); }
.service-stack a:hover { color: var(--accent); transform: translateX(8px); }
.service-stack span { color: var(--accent); font-size: 13px; font-weight: 700; }
.service-stack strong { max-width: 32em; font-size: clamp(20px, 1.8vw, 25px); line-height: 1.42; letter-spacing: -.015em; }
.service-stack i { font-style: normal; font-size: 24px; }

.case-spotlight { padding: clamp(80px, 9vw, 130px) 0; background: var(--accent); color: white; }
.case-spotlight-inner { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(330px, .72fr); align-items: center; gap: clamp(52px, 8vw, 112px); }
.case-image { position: relative; }
.case-image img { width: 100%; aspect-ratio: 1 / .78; object-fit: cover; box-shadow: 14px 14px 0 oklch(0.17 0.015 32 / .28); }
.case-image span { position: absolute; left: 14px; bottom: 14px; padding: 8px 10px; background: var(--ink); color: var(--signal); font-family: var(--font-mono); font-size: 11px; font-weight: 800; }
.case-type { color: var(--signal); font-size: 13px; font-weight: 750; }
.case-copy h2 { margin: 20px 0 24px; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; text-wrap: balance; }
.case-copy p { margin: 0 0 28px; color: oklch(0.96 0.01 34); font-size: 17px; line-height: 1.85; }
.case-copy a { display: inline-flex; padding-bottom: 4px; border-bottom: 1px solid white; font-weight: 700; }

.method-section { padding: clamp(88px, 10vw, 145px) 0; background: var(--surface); }
.home-section-head.compact { align-items: center; }
.method-heading-side { display: grid; justify-items: end; gap: 14px; }
.method-heading-side img { width: clamp(150px, 14vw, 210px); height: auto; border: 1px solid var(--ink); border-radius: 8px; box-shadow: 8px 8px 0 var(--signal); transform: rotate(1.5deg); }
.home-section-head.compact a { color: var(--accent); font-weight: 700; }
.method-flow { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.method-flow div { min-height: 250px; padding: 28px; border-right: 1px solid var(--ink); }
.method-flow div:last-child { border-right: 0; }
.method-icon { width: 46px; height: 46px; padding: 10px; border: 1px solid var(--ink); border-radius: 46% 54% 48% 52%; background: var(--signal); transform: rotate(-3deg); }
.method-flow div:nth-child(even) .method-icon { background: color-mix(in oklch, var(--accent) 78%, white); transform: rotate(3deg); }
.method-flow span { display: block; color: var(--accent); font-size: 14px; font-weight: 750; }
.method-flow span { margin-top: 22px; }
.method-flow p { margin: 26px 0 0; color: var(--ink-soft); font-size: 16px; line-height: 1.7; }

.home-final { padding: 82px 0; background: var(--ink); color: white; }
.home-final-inner { display: grid; grid-template-columns: 1.15fr .7fr; align-items: end; gap: 72px; }
.home-final span { color: var(--signal); font-family: var(--font-mono); font-size: 11px; font-weight: 800; }
.home-final h2 { margin: 16px 0 0; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; }
.home-final p { margin: 0 0 20px; color: oklch(0.78 0.008 32); }
.home-final a { color: var(--signal); font-weight: 750; }

/* Services page */
.services-hero { position: relative; padding: 152px 0 86px; overflow: hidden; background: var(--ink); color: white; }
.services-hero::after { content: ""; position: absolute; top: 76px; right: 0; bottom: 0; width: 32%; background: var(--accent); }
.services-hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(300px, .45fr); align-items: end; gap: 80px; min-height: 560px; }
.services-hero h1 { max-width: 18ch; margin: 0; font-size: var(--type-hero); font-weight: 720; line-height: 1.03; letter-spacing: -.025em; text-wrap: balance; }
.services-hero h1 strong { color: var(--signal); font-weight: inherit; }
.services-hero-note { padding: 28px; background: var(--surface); color: var(--ink); box-shadow: 12px 12px 0 oklch(0.17 0.015 32 / .28); }
.services-hero-note p { margin: 0 0 28px; font-size: 17px; line-height: 1.8; }
.services-hero-note a { color: var(--accent); font-weight: 750; }

.service-scope { padding: clamp(88px, 10vw, 145px) 0; }
.scope-heading { display: grid; grid-template-columns: 1fr .55fr; align-items: end; gap: 64px; margin-bottom: 64px; }
.scope-heading h2 { max-width: 15ch; margin: 0; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; }
.scope-heading p { margin: 0; color: var(--muted); font-size: 17px; }
.service-row { display: grid; grid-template-columns: .8fr 1.05fr .72fr; gap: clamp(30px, 5vw, 76px); padding: 44px 0; border-top: 1px solid var(--ink); }
.service-row:last-child { border-bottom: 1px solid var(--ink); }
.service-name span { color: var(--accent); font-size: 12px; font-weight: 750; }
.service-name h3 { margin: 12px 0 0; font-size: clamp(24px, 2.3vw, 32px); line-height: 1.3; letter-spacing: -.02em; }
.service-row > p { margin: 0; color: var(--ink-soft); font-size: 17px; line-height: 1.8; }
.service-row ul { margin: 0; padding: 0; list-style: none; color: var(--muted); }
.service-row li { padding: 7px 0; border-bottom: 1px solid var(--line); }

.engagement-section { padding: clamp(80px, 9vw, 130px) 0; background: var(--ink); color: white; }
.engagement-inner { display: grid; grid-template-columns: .72fr 1.08fr; gap: clamp(56px, 9vw, 130px); }
.engagement-copy > span { color: var(--signal); font-size: 13px; font-weight: 750; }
.engagement-copy h2 { margin: 18px 0 24px; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; }
.engagement-copy p { color: oklch(0.76 0.008 32); }
.engagement-art { width: min(360px, calc(100% - 12px)); margin: 34px 0 0; padding: 7px; border: 1px solid oklch(1 0 0 / .55); border-radius: 8px; background: var(--surface); box-shadow: 10px 10px 0 var(--signal); transform: rotate(-1.5deg); }
.engagement-art img { width: 100%; height: auto; border-radius: 4px; }
.engagement-list { border-top: 1px solid oklch(1 0 0 / .35); }
.engagement-list > div { display: grid; grid-template-columns: .5fr 1fr .55fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid oklch(1 0 0 / .35); }
.engagement-list strong { color: var(--signal); }
.engagement-list p { margin: 0; color: oklch(0.78 0.008 32); }
.engagement-list span { color: white; font-size: 13px; }

.start-section { padding: clamp(88px, 10vw, 145px) 0; background: var(--accent); color: white; }
.start-inner { display: grid; grid-template-columns: .95fr .75fr; gap: clamp(60px, 10vw, 150px); align-items: center; }
.start-inner h2 { margin: 20px 0 24px; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; }
.start-inner > div:first-child p { max-width: 36em; color: oklch(0.96 0.01 34); font-size: 17px; line-height: 1.8; }
.start-checklist { padding: 8px 28px 28px; background: var(--surface); color: var(--ink); box-shadow: 12px 12px 0 oklch(0.17 0.015 32 / .28); }
.start-checklist p { display: flex; justify-content: space-between; gap: 24px; margin: 0; padding: 20px 0; border-bottom: 1px solid var(--line); }
.start-checklist span { color: var(--muted); font-size: 13px; }
.start-checklist strong { max-width: 20ch; text-align: right; }
.start-checklist a { display: block; margin-top: 26px; color: var(--accent); font-weight: 750; }

.service-proof { padding: clamp(80px, 9vw, 125px) 0; }
.service-proof-inner { display: grid; grid-template-columns: .75fr 1fr; align-items: center; gap: clamp(48px, 8vw, 110px); }
.service-proof img { width: 100%; aspect-ratio: 1 / .78; object-fit: cover; box-shadow: 12px 12px 0 var(--ink); }
.service-proof span { color: var(--accent); font-size: 13px; font-weight: 750; }
.service-proof h2 { max-width: 15ch; margin: 18px 0 26px; font-size: var(--type-display); line-height: 1.1; letter-spacing: -.025em; }
.service-proof a { color: var(--accent); font-weight: 750; }

@media (max-width: 1000px) {
  .marketing-hero { min-height: auto; }
  .marketing-hero::after { top: auto; width: 100%; height: 37%; }
  .marketing-hero-inner { grid-template-columns: 1fr; min-height: auto; padding: 32px 0 18px; }
  .marketing-copy { max-width: 760px; }
  .marketing-visual { width: min(680px, 94%); margin-left: auto; }
  .proof-ribbon .container { justify-content: flex-start; overflow: hidden; }
  .home-section-head, .scope-heading { grid-template-columns: 1fr; gap: 22px; }
  .service-layout { grid-template-columns: 1fr; }
  .service-lead { min-height: 390px; }
  .case-spotlight-inner, .home-final-inner, .services-hero-inner, .engagement-inner, .start-inner, .service-proof-inner { grid-template-columns: 1fr; }
  .case-image, .service-proof img { width: min(680px, 94%); }
  .method-flow { grid-template-columns: 1fr 1fr; }
  .method-flow div:nth-child(2) { border-right: 0; }
  .method-flow div:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
  .services-hero::after { top: auto; width: 100%; height: 31%; }
  .services-hero-inner { min-height: auto; }
  .services-hero-note { width: min(560px, 90%); margin-left: auto; }
  .service-row { grid-template-columns: .8fr 1.2fr; }
  .service-row ul { grid-column: 2; }
}

@media (max-width: 720px) {
  .marketing-hero { padding-top: 104px; }
  .marketing-hero-inner { gap: 48px; }
  .marketing-copy h1 { font-size: clamp(44px, 12vw, 52px); line-height: 1.06; }
  .marketing-copy > p:not(.evidence-note) { font-size: 16px; }
  .marketing-actions .hero-action { width: 100%; }
  .evidence-note { gap: 10px 16px; }
  .marketing-visual { width: calc(100% - 8px); min-height: 420px; padding: 46px 12px 12px; box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .visual-main { height: 315px; }
  .visual-result { left: -8px; right: 8px; bottom: 8px; grid-template-columns: 1.45fr .7fr; }
  .visual-result img { min-height: 90px; }
  .visual-result p { padding: 10px; }
  .visual-result p strong { font-size: 13px; }
  .proof-ribbon { display: none; }
  .home-services, .service-scope { padding: 78px 0; }
  .home-section-head { margin-bottom: 38px; }
  .home-section-head h2, .scope-heading h2 { font-size: clamp(34px, 9.5vw, 40px); }
  .service-lead { min-height: 460px; padding: 30px 26px; }
  .service-lead p { max-width: none; }
  .service-lead h3 { font-size: 34px; }
  .service-stack a { grid-template-columns: 1fr auto; gap: 12px; min-height: 142px; padding: 22px 4px; }
  .service-stack a span { grid-column: 1 / -1; }
  .service-stack strong { font-size: 21px; }
  .case-spotlight, .method-section, .engagement-section, .start-section, .service-proof { padding: 76px 0; }
  .case-image, .service-proof img { width: calc(100% - 8px); box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .case-copy h2, .engagement-copy h2, .start-inner h2, .service-proof h2 { font-size: clamp(34px, 9.5vw, 40px); }
  .method-flow { grid-template-columns: 1fr; }
  .method-flow div { min-height: 160px; border-right: 0; border-bottom: 1px solid var(--ink); }
  .method-flow div:last-child { border-bottom: 0; }
  .method-flow p { margin-top: 34px; }
  .method-heading-side { justify-items: start; }
  .method-heading-side img { width: 180px; box-shadow: 6px 6px 0 var(--signal); }
  .home-final { padding: 68px 0; }
  .home-final h2 { font-size: 38px; }
  .services-hero { padding: 118px 0 56px; }
  .services-hero-inner { gap: 42px; }
  .services-hero h1 { font-size: clamp(44px, 12vw, 52px); line-height: 1.06; }
  .services-hero-note { width: calc(100% - 8px); margin-left: 0; padding: 24px; box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .service-row { grid-template-columns: 1fr; gap: 22px; padding: 36px 0; }
  .service-row ul { grid-column: auto; }
  .engagement-list > div { grid-template-columns: 1fr; gap: 12px; }
  .start-checklist { padding: 6px 22px 24px; box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .start-checklist p { flex-direction: column; gap: 4px; }
  .start-checklist strong { max-width: none; text-align: left; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

/* Orchestrated first load; content stays visible without JS. */
.js .home-page .hero-copy > *, .js .home-page .hero-proof,
.js .article-page .article-head-copy > *, .js .article-page .article-cover {
  opacity: 0;
  transform: translateY(20px);
}

.js .home-page.is-ready .hero-copy > *, .js .article-page.is-ready .article-head-copy > * {
  opacity: 1;
  transform: none;
  transition: opacity .65s var(--ease-out), transform .65s var(--ease-out);
}

.js .home-page.is-ready .hero-copy > *:nth-child(2), .js .article-page.is-ready .article-head-copy > *:nth-child(2) { transition-delay: .06s; }
.js .home-page.is-ready .hero-copy > *:nth-child(3), .js .article-page.is-ready .article-head-copy > *:nth-child(3) { transition-delay: .12s; }
.js .home-page.is-ready .hero-copy > *:nth-child(4) { transition-delay: .18s; }

.js .home-page.is-ready .hero-proof, .js .article-page.is-ready .article-cover {
  opacity: 1;
  transform: rotate(1deg);
  transition: opacity .8s var(--ease-out) .12s, transform .8s var(--ease-out) .12s;
}

@media (max-width: 1000px) {
  .container { width: min(100% - 40px, 880px); }
  .home-page .hero { min-height: auto; }
  .home-page .hero::before { width: 100%; height: 40%; top: auto; bottom: 0; }
  .lab-hero { grid-template-columns: 1fr; min-height: auto; padding: 34px 0 18px; }
  .hero-copy { max-width: 760px; }
  .hero-proof { width: min(680px, 94%); min-height: 500px; margin-left: auto; }
  .section-intro { grid-template-columns: 1fr; gap: 20px; }
  .article-page .a-head::after { top: auto; bottom: 0; width: 100%; height: 36%; }
  .article-page .a-head-inner { grid-template-columns: 1fr; width: min(100% - 40px, 820px); }
  .article-cover { width: min(620px, 94%); margin-left: auto; }
  .article-page .a-wrap { width: min(100% - 40px, 760px); }
}

@media (max-width: 720px) {
  .container { width: calc(100% - 32px); }
  .nav-inner { min-height: 68px; }
  .brand { font-size: 15px; }
  .brand-mark { width: 34px; height: 34px; }
  .nav-cta { min-height: 40px; padding: 8px 12px; }
  .home-page .hero { padding-top: 100px; }
  .lab-hero { gap: 44px; }
  .lab-label { margin-bottom: 20px; font-size: 10px; }
  .hero-copy h1 { font-size: clamp(44px, 12vw, 52px); line-height: 1.06; }
  .hero-copy .lead { margin-top: 22px; font-size: 16px; }
  .hero-actions { margin-top: 28px; }
  .hero-action { width: 100%; min-height: 48px; }
  .hero-proof { width: calc(100% - 8px); min-height: 410px; box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .proof-stage { min-height: 300px; }
  .proof-stage .proof-data { width: 76%; }
  .proof-caption { min-height: 68px; }
  .proof-caption strong { font-size: 19px; }
  .home-page .list { padding: 72px 0; }
  .section-intro { margin-bottom: 34px; }
  .section-intro h2 { font-size: clamp(34px, 9.5vw, 40px); }
  .feat { grid-template-columns: 1fr; min-height: 0; }
  .feat-cover { min-height: 270px; }
  .feat-body { padding: 28px 24px; }
  .feat-body h2 { font-size: 28px; }
  .feat-meta, .bcard-meta { align-items: flex-start; gap: 12px; }
  .cards { grid-template-columns: 1fr; }
  .bcard-cover { height: 240px; }
  .bcard-body { padding: 24px; }
  .cta-strip { padding: 34px 26px; }
  .cta-strip .btn { width: 100%; justify-content: center; }
  .article-page .a-head { padding: 112px 0 42px; }
  .article-page .a-head-inner { width: calc(100% - 32px); gap: 38px; }
  .article-page .a-head h1 { font-size: clamp(32px, 8.4vw, 38px); line-height: 1.22; }
  .article-cover { width: calc(100% - 8px); min-height: 285px; box-shadow: 8px 8px 0 oklch(0.17 0.015 32 / .28); }
  .article-cover img { height: 285px; }
  .article-page .a-wrap { width: calc(100% - 32px); padding-top: 48px; }
  .article-page .a-content p, .article-page .a-content li { font-size: 16px; }
  .article-page .a-content h2 { margin-top: 52px; font-size: 28px; }
  .article-page .a-content img { margin: 28px auto; }
  .article-page .a-content table { display: block; overflow-x: auto; }
  .article-page .a-cta, .article-page .related { width: calc(100% - 32px); }
  .article-page .a-cta { padding: 30px 24px; }
  .article-page .a-cta .btn { width: 100%; justify-content: center; }
}

@media (max-width: 380px) {
  .nav-cta { display: none; }
  .marketing-copy h1, .services-hero h1, .hero-copy h1 { font-size: 40px; }
  .proof-top { font-size: 9px; }
  .feat-cover { min-height: 230px; }
  .article-page .a-head h1 { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .home-page .hero-copy > *, .js .home-page .hero-proof,
  .js .article-page .article-head-copy > *, .js .article-page .article-cover { opacity: 1; transform: none; }
}

@media (forced-colors: active) {
  :where(a, button, input, select):focus-visible { outline-color: CanvasText; }
}