:root {
  --white: #ffffff;
  --paper: #f7f8fa;
  --ink: #0d0e11;
  --muted: #676b73;
  --line: #d7dae0;
  --line-dark: #2e3137;
  --blue: #123dff;
  --blue-dark: #0a2fd8;
  --orange: #ff8a1f;
  --dark: #111216;
  --dark-soft: #1a1c21;
  --gutter: clamp(24px, 4vw, 64px);
  --content: 1510px;
  --font-sans: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--white);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open,
body.lightbox-open,
body.tool-case-open {
  overflow: hidden;
}

section {
  scroll-margin-top: 74px;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

img {
  display: block;
  height: auto;
  max-width: 100%;
}

svg {
  display: block;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.7;
}

::selection {
  color: var(--white);
  background: var(--blue);
}

.scroll-progress {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  will-change: transform;
}

.skip-link {
  position: fixed;
  z-index: 1100;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  width: 100%;
  height: 74px;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  font-size: 22px;
  font-weight: 750;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.brand-cn {
  font-weight: 820;
}

.brand-separator {
  color: var(--muted);
  font-weight: 400;
}

.site-nav {
  display: flex;
  height: 100%;
  align-items: center;
  gap: clamp(27px, 3vw, 54px);
}

.site-nav a {
  position: relative;
  display: inline-flex;
  height: 100%;
  align-items: center;
  font-size: 15px;
  font-weight: 580;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 280ms var(--ease);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
}

.hero,
.project-section,
.evidence-section,
.method-section,
.personal-section,
.contact-section {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding-right: var(--gutter);
  padding-left: var(--gutter);
}

.hero {
  display: grid;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: minmax(570px, auto);
  column-gap: clamp(48px, 5vw, 72px);
  align-items: center;
  padding-top: clamp(40px, 4vw, 64px);
  padding-bottom: clamp(56px, 6vw, 92px);
}

.hero-copy {
  align-self: center;
}

.hero h1,
.section-heading h2,
.tools-intro h2,
.personal-intro h2,
.contact-copy h2 {
  margin: 0;
  font-weight: 830;
  letter-spacing: -0.075em;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(64px, 5.1vw, 82px);
  line-height: 0.98;
  white-space: nowrap;
}

.title-stop {
  display: inline-block;
  width: 0.17em;
  height: 0.17em;
  margin-left: 0.08em;
  background: var(--blue);
  box-shadow: inset 0 0 0 0.045em var(--white);
  vertical-align: 0.05em;
}

.hero-lead {
  max-width: 650px;
  margin: clamp(26px, 3vw, 42px) 0 0;
  color: #34363c;
  font-size: clamp(17px, 1.25vw, 21px);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 30px;
  border: 1px solid var(--blue);
  border-radius: 0;
  font-size: 16px;
  font-weight: 690;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: color 220ms ease, background 220ms ease, transform 220ms var(--ease);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--blue);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--blue);
  background: var(--white);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  color: var(--white);
  background: var(--blue);
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 30px 0 0;
  color: #383a40;
  font-size: 14px;
  line-height: 1.6;
}

.hero-facts span {
  display: inline-flex;
  align-items: center;
}

.hero-facts span:not(:last-child)::after {
  width: 1px;
  height: 18px;
  margin: 0 17px;
  background: var(--line);
  content: "";
}

.portrait-frame {
  position: relative;
  min-width: 0;
  margin: 0;
  padding: 16px;
}

.portrait-frame img {
  width: 100%;
  aspect-ratio: 1.22 / 1;
  object-fit: cover;
  object-position: 50% 42%;
}

.portrait-frame figcaption {
  margin-top: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  letter-spacing: 0.03em;
  text-align: center;
}

.frame-corner {
  position: absolute;
  width: 22px;
  height: 22px;
}

.frame-corner-tl {
  top: 0;
  left: 0;
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
}

.frame-corner-tr {
  top: 0;
  right: 0;
  border-top: 2px solid var(--ink);
  border-right: 2px solid var(--ink);
}

.frame-corner-bl {
  bottom: 31px;
  left: 0;
  border-bottom: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
}

.frame-corner-br {
  right: 0;
  bottom: 31px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.frame-label {
  position: absolute;
  z-index: 2;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.frame-label-top {
  top: -2px;
  left: 46px;
}

.frame-label-right {
  top: 50%;
  right: -18px;
  transform: rotate(90deg) translateY(-50%);
}

.frame-label-left {
  top: 50%;
  left: -24px;
  transform: rotate(-90deg) translateY(-50%);
}

.project-section,
.evidence-section,
.method-section {
  padding-top: clamp(100px, 10vw, 168px);
  padding-bottom: clamp(100px, 10vw, 168px);
}

.project-section {
  padding-top: 110px;
}

.project-section > .section-heading {
  opacity: 1;
  transform: none;
}

.section-heading {
  position: relative;
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
}

.section-number {
  color: var(--blue);
  font-size: 22px;
  font-weight: 760;
  letter-spacing: -0.03em;
}

.section-heading h2,
.tools-intro h2 {
  max-width: 1160px;
  font-size: clamp(46px, 4.2vw, 76px);
  line-height: 1.04;
}

.section-heading > div > p,
.tools-intro > p {
  max-width: 810px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 1.3vw, 20px);
  line-height: 1.7;
}

.project-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  margin-top: 64px;
}

.workflow-overview {
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--ink);
}

.workflow-heading {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.workflow-heading > span {
  color: var(--blue);
  font: 700 12px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.05em;
}

.workflow-heading h4 {
  grid-column: 1;
  margin: 0;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.workflow-heading p {
  grid-column: 1;
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 24px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.workflow-grid article {
  min-height: 172px;
  padding: 21px 22px 23px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-grid article > span {
  color: var(--blue);
  font: 700 11px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.04em;
}

.workflow-grid h5 {
  margin: 20px 0 0;
  font-size: 19px;
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.workflow-grid p {
  margin: 10px 0 0;
  color: #5c6068;
  font-size: 13px;
  line-height: 1.65;
}

.project-label {
  margin: 0 0 17px;
  color: var(--blue);
  font: 650 13px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-brief h3 {
  margin: 0;
  font-size: clamp(32px, 2.6vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.055em;
}

.experience-title-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 13px 16px;
}

.experience-track {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid #aebcff;
  color: var(--blue);
  background: #f1f4ff;
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.02em;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px 12px;
  margin: 18px 0 0;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #3e4148;
}

.experience-meta-label {
  color: var(--muted);
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

.project-meta strong {
  color: var(--ink);
  font-size: 15px;
  font-weight: 720;
}

.experience-role {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  padding: 4px 8px;
  color: var(--white);
  background: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.project-description {
  margin: 25px 0 0;
  color: #34363b;
  font-size: 17px;
  line-height: 1.8;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
  color: var(--blue);
  font-weight: 680;
  text-decoration: none;
}

.text-link span {
  font-size: 22px;
  transition: transform 220ms var(--ease);
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translateX(6px);
}

.project-media {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
}

.media-slot {
  position: relative;
  margin: 0;
}

.media-slot::before,
.media-slot::after {
  position: absolute;
  z-index: 2;
  width: 20px;
  height: 20px;
  content: "";
  pointer-events: none;
}

.media-slot::before {
  top: -6px;
  left: -6px;
  border-top: 2px solid var(--blue);
  border-left: 2px solid var(--blue);
}

.media-slot::after {
  right: -6px;
  bottom: 34px;
  border-right: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
}

.slot-inner {
  position: relative;
  display: flex;
  min-height: 280px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  background-color: #fbfcfd;
  background-image: linear-gradient(to top right, transparent calc(50% - 0.5px), #d6d9df 50%, transparent calc(50% + 0.5px)), linear-gradient(to bottom right, transparent calc(50% - 0.5px), #d6d9df 50%, transparent calc(50% + 0.5px));
  overflow: hidden;
}

.slot-inner-compact {
  min-height: 150px;
}

.account-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  background: #eef0f4;
}

.account-preview-card {
  position: relative;
  min-width: 0;
  aspect-ratio: 942 / 2048;
  padding: 0;
  border: 1px solid #c6c9d1;
  background: var(--dark);
  cursor: zoom-in;
  overflow: hidden;
}

.account-preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms var(--ease);
}

.account-preview-card span {
  position: absolute;
  right: 7px;
  bottom: 7px;
  left: 7px;
  padding: 7px 5px;
  color: var(--white);
  background: rgba(13, 14, 17, 0.82);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-align: center;
}

.account-preview-card:hover img,
.account-preview-card:focus-visible img {
  transform: scale(1.025);
}

.media-slot-phone .slot-inner {
  min-height: 390px;
}

.slot-inner::before,
.slot-inner::after {
  position: absolute;
  top: 12px;
  bottom: 12px;
  width: 7px;
  background: repeating-linear-gradient(to bottom, #e0e2e7 0 7px, transparent 7px 20px);
  content: "";
}

.slot-inner::before {
  left: 9px;
}

.slot-inner::after {
  right: 9px;
}

.slot-inner span,
.slot-inner strong {
  position: relative;
  z-index: 2;
  padding: 4px 8px;
  background: #fbfcfd;
}

.slot-inner span {
  color: var(--ink);
  font-size: 15px;
  font-weight: 650;
}

.slot-inner strong {
  color: var(--blue);
  font-size: 13px;
}

.media-slot figcaption {
  margin-top: 13px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
  text-align: center;
}

.digital-human-case {
  position: relative;
  display: grid;
  grid-template-columns: minmax(270px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(42px, 5vw, 82px);
  align-items: center;
  margin-top: clamp(68px, 7vw, 104px);
  padding: clamp(34px, 4vw, 62px);
  scroll-margin-top: 84px;
  color: var(--white);
  background: var(--dark);
  overflow: hidden;
}

.digital-human-case::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 20%;
  height: 3px;
  background: var(--blue);
  content: "";
}

.digital-human-case::after {
  position: absolute;
  right: 4%;
  bottom: -17px;
  width: 128px;
  height: 42px;
  border-top: 1px solid #4d515c;
  background: repeating-linear-gradient(90deg, transparent 0 11px, #4d515c 11px 12px);
  content: "";
}

.digital-human-media {
  position: relative;
  z-index: 1;
  width: min(100%, 350px);
  margin: 0;
  justify-self: center;
  border: 1px solid #494d57;
  background: #07080b;
}

.digital-human-media video {
  display: block;
  width: 100%;
  aspect-ratio: 1080 / 1906;
  background: #07080b;
  object-fit: cover;
}

.digital-human-media figcaption {
  padding: 12px 14px 14px;
  border-top: 1px solid #383b44;
  color: #9da1ab;
  font-size: 11px;
  line-height: 1.5;
}

.digital-human-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.digital-human-label {
  margin: 0;
  color: #8298ff;
  font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.08em;
}

.digital-human-copy h4 {
  margin: 18px 0 0;
  font-size: clamp(38px, 3.8vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.06em;
}

.digital-human-lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: #d6d8de;
  font-size: 17px;
  line-height: 1.8;
}

.digital-human-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid #41444d;
  border-bottom: 1px solid #41444d;
  list-style: none;
}

.digital-human-flow li {
  min-width: 0;
  padding: 22px 18px 24px;
}

.digital-human-flow li + li {
  border-left: 1px solid #41444d;
}

.digital-human-flow span {
  display: block;
  color: #8298ff;
  font: 700 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.digital-human-flow h5 {
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.digital-human-flow p {
  margin: 10px 0 0;
  color: #aeb2bc;
  font-size: 13px;
  line-height: 1.65;
}

.digital-human-boundary {
  max-width: 720px;
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--blue);
  color: #aeb2bc;
  font-size: 13px;
  line-height: 1.7;
}

.digital-human-boundary strong {
  color: var(--white);
}

.proof-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 78px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.proof-list article {
  display: flex;
  min-height: 140px;
  align-items: center;
  gap: 24px;
  padding: 24px 32px;
}

.proof-list article + article {
  border-left: 1px solid var(--line);
}

.proof-list strong {
  color: var(--blue);
  font-size: clamp(48px, 4vw, 68px);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.proof-list strong span {
  margin-left: 5px;
  font-size: 20px;
  letter-spacing: 0;
}

.proof-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}

.proof-note {
  margin: 17px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.secondary-project {
  position: relative;
  margin-top: clamp(68px, 7vw, 104px);
  padding: clamp(34px, 3.7vw, 56px);
  border: 1px solid var(--line);
  scroll-margin-top: 92px;
  color: var(--ink);
  background: var(--paper);
  overflow: hidden;
}

.secondary-project::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 14%;
  height: 3px;
  background: var(--blue);
  content: "";
}

.secondary-project::after {
  position: absolute;
  right: 5%;
  bottom: -22px;
  width: 110px;
  height: 44px;
  border-top: 1px solid #b8bbc3;
  background: repeating-linear-gradient(90deg, transparent 0 11px, #c9ccd3 11px 12px);
  content: "";
}

.secondary-project-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(38px, 5vw, 76px);
  align-items: start;
}

.secondary-project .project-label {
  color: var(--blue);
}

.secondary-project h3 {
  margin: 0;
  font-size: clamp(34px, 2.7vw, 44px);
  line-height: 1.04;
  letter-spacing: -0.06em;
}

.secondary-project .experience-track {
  border-color: #aebcff;
  color: var(--blue);
  background: #f1f4ff;
}

.secondary-project .project-meta {
  border-color: var(--line);
}

.secondary-project .experience-meta-label {
  color: var(--muted);
}

.secondary-project .project-meta strong {
  color: var(--ink);
}

.secondary-project .experience-role {
  color: var(--white);
  background: var(--ink);
}

.secondary-project-intro {
  padding-top: 19px;
  border-top: 1px solid var(--ink);
}

.experience-summary-label {
  display: block;
  color: var(--blue);
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.secondary-project-intro h4 {
  margin: 15px 0 0;
  color: var(--ink);
  font-size: clamp(22px, 1.7vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.secondary-project-intro p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.echo-account-evidence {
  display: grid;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1.58fr);
  gap: clamp(32px, 4vw, 62px);
  align-items: start;
  margin-top: clamp(36px, 4vw, 54px);
  padding-top: 32px;
  border-top: 1px solid var(--ink);
}

.echo-account-copy h4 {
  margin: 15px 0 0;
  color: var(--ink);
  font-size: clamp(24px, 2vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.echo-account-copy p {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.echo-account-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.echo-account-card {
  min-width: 0;
  padding: 0;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--white);
  font: inherit;
  text-align: left;
  cursor: zoom-in;
  overflow: hidden;
  transition: border-color 220ms ease, transform 280ms var(--ease);
}

.echo-account-card:hover,
.echo-account-card:focus-visible {
  border-color: var(--blue);
  transform: translateY(-3px);
}

.echo-account-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.echo-account-image {
  display: block;
  height: clamp(270px, 24vw, 350px);
  background: #e9eaee;
  overflow: hidden;
}

.echo-account-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 500ms var(--ease);
}

.echo-account-card:hover .echo-account-image img,
.echo-account-card:focus-visible .echo-account-image img {
  transform: scale(1.025);
}

.echo-account-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  align-items: center;
  padding: 15px 16px 17px;
}

.echo-account-meta b {
  color: var(--blue);
  font-size: 14px;
}

.echo-account-meta small {
  min-width: 0;
  color: #5e626b;
  font-size: 12px;
}

.echo-account-meta > span {
  grid-column: 1 / -1;
  color: var(--ink);
  font-size: 12px;
  font-weight: 680;
}

.secondary-project-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(36px, 4vw, 54px);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.secondary-project-flow > div {
  min-height: 156px;
  padding: 23px 22px 25px;
}

.secondary-project-flow > div + div {
  border-left: 1px solid var(--line);
}

.secondary-project-flow span {
  display: block;
  margin-bottom: 24px;
  color: var(--blue);
  font: 700 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.secondary-project-flow b {
  display: block;
  font-size: 17px;
}

.secondary-project-flow p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.secondary-project-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 20px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.secondary-project-metrics > div {
  min-width: 0;
  padding: 18px 22px 20px;
}

.secondary-project-metrics > div + div {
  border-left: 1px solid var(--line);
}

.secondary-project-metrics strong {
  display: block;
  color: var(--blue);
  font-size: clamp(30px, 2.7vw, 42px);
  line-height: 1;
  letter-spacing: -0.055em;
}

.secondary-project-metrics strong span {
  margin-left: 5px;
  color: var(--blue);
  font-size: 13px;
  letter-spacing: 0;
}

.secondary-project-metrics p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.secondary-project-note {
  margin: 17px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.evidence-section {
  max-width: none;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.project-section > .evidence-section {
  width: calc(100% + (var(--gutter) * 2));
  margin-right: calc(var(--gutter) * -1);
  margin-left: calc(var(--gutter) * -1);
}

.evidence-counter {
  align-self: start;
  font: 650 23px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.evidence-counter b {
  color: var(--blue);
  font-size: 38px;
}

.evidence-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 62px;
  border-bottom: 1px solid var(--line);
}

.evidence-tabs button {
  position: relative;
  min-height: 66px;
  padding: 0 20px;
  border: 0;
  color: var(--ink);
  background: transparent;
  font-size: 18px;
  font-weight: 620;
  cursor: pointer;
}

.evidence-tabs button::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 4px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transition: transform 280ms var(--ease);
}

.evidence-tabs button.is-active,
.evidence-tabs button:hover,
.evidence-tabs button:focus-visible {
  color: var(--blue);
}

.evidence-tabs button.is-active::after {
  transform: scaleX(1);
}

.evidence-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.45fr);
  gap: 32px;
  margin-top: 32px;
}

.evidence-main {
  min-width: 0;
}

.evidence-placeholder {
  position: relative;
  display: grid;
  min-height: 580px;
  place-content: center;
  border: 2px solid var(--blue);
  color: var(--muted);
  background: var(--white);
  text-align: center;
  overflow: hidden;
}

.evidence-placeholder.has-evidence {
  display: block;
  min-height: 0;
  padding: 28px 30px 24px;
}

.evidence-gallery[hidden],
.evidence-empty[hidden] {
  display: none !important;
}

.evidence-gallery-account {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.evidence-gallery-viral {
  display: grid;
  gap: 28px;
}

.evidence-gallery-competitor,
.evidence-gallery-topics,
.evidence-gallery-materials {
  display: block;
}

.evidence-table-card {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid #c6c9d1;
  color: var(--ink);
  background: var(--white);
  font: inherit;
  text-align: left;
  cursor: zoom-in;
  overflow: hidden;
  transition: border-color 220ms ease, transform 300ms var(--ease);
}

.evidence-table-card:hover,
.evidence-table-card:focus-visible {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.evidence-table-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.evidence-table-frame {
  display: block;
  background: #f2f3f6;
  overflow: hidden;
}

.evidence-table-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.evidence-table-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 15px 16px 17px;
}

.evidence-table-meta b {
  color: var(--blue);
  font-size: 14px;
}

.evidence-table-meta small {
  color: var(--muted);
  font-size: 12px;
}

.evidence-table-meta > span {
  font-size: 12px;
  font-weight: 680;
}

.evidence-video-feature {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(240px, 1fr);
  gap: 28px;
  align-items: center;
  padding: 22px;
  border: 1px solid #c6c9d1;
  background: #f6f7f9;
  text-align: left;
}

.evidence-video-shell {
  width: min(100%, 330px);
  margin: 0 auto;
  border: 1px solid var(--ink);
  background: #050505;
  box-shadow: 10px 10px 0 rgba(28, 63, 198, 0.1);
  overflow: hidden;
}

.evidence-video-player {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 580px;
  background: #050505;
  object-fit: cover;
}

.evidence-video-copy {
  min-width: 0;
}

.evidence-video-copy .evidence-video-kicker {
  padding: 0;
  color: var(--blue);
  background: transparent;
  font: 700 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.evidence-video-copy h4 {
  max-width: 12em;
  margin: 14px 0 10px;
  color: var(--ink);
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.evidence-video-copy > p:not(.evidence-video-kicker) {
  padding: 0;
  color: var(--muted);
  background: transparent;
  font-size: 14px;
}

.evidence-video-copy a {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-top: 26px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.viral-screenshot-block {
  min-width: 0;
}

.viral-screenshot-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
  color: var(--ink);
  text-align: left;
}

.viral-screenshot-heading b {
  font-size: 15px;
}

.viral-screenshot-heading small {
  color: var(--muted);
  font-size: 12px;
}

.viral-screenshot-strip {
  display: flex;
  gap: 18px;
  padding-bottom: 16px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-color: var(--blue) #e7e9ee;
  scrollbar-width: thin;
  scroll-snap-type: x mandatory;
}

.viral-screenshot-strip .evidence-media-card {
  flex: 0 0 min(285px, 42%);
}

.evidence-media-card {
  min-width: 0;
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
  text-align: left;
  cursor: zoom-in;
  scroll-snap-align: start;
}

.evidence-media-frame {
  display: block;
  aspect-ratio: 942 / 2048;
  border: 1px solid #c6c9d1;
  background: var(--dark);
  overflow: hidden;
  transition: border-color 220ms ease, transform 300ms var(--ease);
}

.evidence-media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.evidence-media-card:hover .evidence-media-frame,
.evidence-media-card:focus-visible .evidence-media-frame {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.evidence-media-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  margin-top: 12px;
}

.evidence-media-meta b {
  color: var(--blue);
  font: 700 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.evidence-media-meta small {
  color: #3e4148;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}

.evidence-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
}

.evidence-placeholder.is-changing > * {
  opacity: 0;
}

.evidence-placeholder > * {
  transition: opacity 160ms ease;
}

.evidence-placeholder p,
.evidence-placeholder strong {
  position: relative;
  z-index: 3;
  margin: 0;
  padding: 5px 10px;
  background: var(--white);
}

.evidence-placeholder p {
  color: var(--ink);
  font-size: 20px;
  font-weight: 680;
}

.evidence-placeholder strong {
  margin-top: 4px;
  color: var(--blue);
  font-size: 15px;
}

.placeholder-cross {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: linear-gradient(to top right, transparent calc(50% - 0.5px), #d6d9df 50%, transparent calc(50% + 0.5px)), linear-gradient(to bottom right, transparent calc(50% - 0.5px), #d6d9df 50%, transparent calc(50% + 0.5px));
}

.perforations {
  position: absolute;
  z-index: 2;
  top: 14px;
  bottom: 14px;
  width: 9px;
  background: repeating-linear-gradient(to bottom, #dde0e5 0 9px, transparent 9px 25px);
}

.perforations-left {
  left: 12px;
}

.perforations-right {
  right: 12px;
}

.evidence-placeholder::after {
  position: absolute;
  bottom: -2px;
  left: 5%;
  width: 18%;
  height: 4px;
  background: var(--orange);
  content: "";
}

.evidence-caption {
  display: flex;
  min-height: 136px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 24px 0 0;
}

.evidence-caption h3 {
  margin: 0;
  font-size: 21px;
  letter-spacing: -0.025em;
}

.evidence-caption p {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.evidence-caption-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.evidence-external-link[hidden] {
  display: none;
}

.evidence-view:disabled {
  border-color: #bfc3cb;
  color: #8c9098;
  cursor: not-allowed;
  opacity: 0.78;
}

.evidence-view:disabled:hover {
  color: #8c9098;
  background: var(--white);
  transform: none;
}

.evidence-rail {
  display: grid;
  grid-template-rows: repeat(5, 1fr);
  border-top: 1px solid var(--line);
}

.evidence-thumb {
  display: grid;
  grid-template-columns: 46px 1fr;
  grid-template-rows: auto auto;
  gap: 5px 12px;
  align-content: center;
  padding: 20px 18px;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color 220ms ease, background 220ms ease;
}

.evidence-thumb span {
  grid-row: 1 / 3;
  color: #a0a4ad;
  font: 650 14px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.evidence-thumb b {
  font-size: 17px;
}

.evidence-thumb small {
  color: var(--muted);
  font-size: 13px;
}

.evidence-thumb:hover,
.evidence-thumb:focus-visible,
.evidence-thumb.is-active {
  color: var(--blue);
  background: var(--white);
}

.evidence-thumb.is-active span,
.evidence-thumb.is-active small {
  color: var(--blue);
}

.replacement-note {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.replacement-note span {
  display: inline-grid;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  color: var(--blue);
  font: italic 650 12px Georgia, serif;
}

.replacement-note code {
  color: var(--ink);
  font-size: 12px;
}

.method-section {
  background: var(--white);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 76px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.method-grid article {
  min-height: 320px;
  padding: 28px 28px 34px;
}

.method-grid article + article {
  border-left: 1px solid var(--line);
}

.method-grid span {
  color: var(--blue);
  font: 700 28px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.method-grid h3 {
  margin: 84px 0 0;
  font-size: 23px;
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.method-grid p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.responsibility-boundary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 44px;
  border: 1px solid var(--line);
}

.responsibility-boundary > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  align-items: start;
  padding: 28px 32px;
}

.responsibility-boundary > div + div {
  border-left: 1px solid var(--line);
}

.responsibility-boundary span {
  color: var(--blue);
  font-size: 14px;
  font-weight: 720;
}

.responsibility-boundary p {
  margin: 0;
  color: #3c3e45;
  font-size: 15px;
  line-height: 1.7;
}

.tools-section {
  color: var(--white);
  background: var(--dark);
}

.tools-intro,
.tool-list {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding-right: var(--gutter);
  padding-left: var(--gutter);
}

.tools-intro {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr) minmax(280px, 0.5fr);
  gap: 24px;
  align-items: end;
  padding-top: clamp(100px, 9vw, 150px);
  padding-bottom: 64px;
}

.tools-intro .section-number {
  align-self: start;
}

.tools-intro h2 {
  max-width: 950px;
}

.tools-intro h2 .title-stop {
  box-shadow: inset 0 0 0 0.045em var(--dark);
}

.tools-intro > p {
  margin: 0;
  color: #b7bac2;
  font-size: 16px;
}

.tool-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
  padding-bottom: clamp(100px, 9vw, 150px);
}

.tool-row {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 530px;
  grid-column: span 2;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto 1fr auto auto;
  gap: 22px;
  align-content: start;
  padding: 28px;
  border: 1px solid #373a41;
  background: #15171c;
  transition: border-color 220ms ease, transform 260ms var(--ease), background 220ms ease;
}

.tool-row:hover {
  border-color: #646a78;
  background: #191b21;
  transform: translateY(-4px);
}

.tool-index {
  color: var(--blue);
  font: 700 clamp(30px, 2.5vw, 42px)/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.tool-preview {
  position: relative;
  width: 100%;
  height: 220px;
  padding: 0;
  border: 1px solid #676b75;
  background: #24262c;
  cursor: zoom-in;
  overflow: hidden;
}

.tool-preview::before,
.tool-preview::after {
  position: absolute;
  z-index: 2;
  top: 8px;
  bottom: 8px;
  width: 6px;
  background: repeating-linear-gradient(to bottom, #cdd0d7 0 6px, transparent 6px 17px);
  content: "";
  opacity: 0.8;
}

.tool-preview::before {
  left: 7px;
}

.tool-preview::after {
  right: 7px;
}

.tool-preview img {
  width: 100%;
  height: 100%;
  opacity: 0.76;
  object-fit: cover;
  transition: opacity 220ms ease, transform 500ms var(--ease);
}

.tool-preview:hover img,
.tool-preview:focus-visible img {
  opacity: 1;
  transform: scale(1.035);
}

.tool-preview-sorter img {
  object-position: 50% 16%;
}

.tool-preview-video-digest img {
  object-position: 50% 20%;
}

.tool-copy h3 {
  margin: 0;
  font-size: clamp(26px, 2.3vw, 38px);
  letter-spacing: -0.04em;
}

.tool-copy p {
  margin: 14px 0 0;
  color: #e1e2e6;
  font-size: 17px;
  line-height: 1.65;
}

.tool-copy small {
  display: block;
  margin-top: 11px;
  color: #878b95;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  align-self: end;
  gap: 18px;
  padding: 0;
  border: 0;
  color: #4e70ff;
  background: transparent;
  font-size: 16px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.tool-link span {
  font-size: 23px;
  transition: transform 220ms var(--ease);
}

.tool-link:hover span,
.tool-link:focus-visible span {
  transform: translateX(6px);
}

.tool-detail {
  display: grid;
  max-height: 0;
  grid-column: 1 / -1;
  overflow: hidden;
  opacity: 0;
  transition: max-height 440ms var(--ease), opacity 260ms ease;
}

.tool-row.is-expanded .tool-detail {
  max-height: 180px;
  opacity: 1;
}

.tool-detail p {
  margin: -12px 0 28px;
  padding: 21px 0 0;
  border-top: 1px solid #30333a;
  color: #aeb1ba;
  font-size: 14px;
  line-height: 1.75;
}

.tool-row.is-expanded .tool-detail-toggle span {
  transform: rotate(90deg);
}

.tool-case-study {
  width: min(94vw, 1240px);
  max-width: none;
  max-height: 92vh;
  padding: 0;
  border: 0;
  color: var(--ink);
  background: #f4f5f7;
  overflow: auto;
  overscroll-behavior: contain;
}

.tool-case-study::backdrop {
  background: rgba(3, 5, 12, 0.82);
  backdrop-filter: blur(8px);
}

.tool-case-close {
  position: sticky;
  z-index: 4;
  top: 16px;
  display: grid;
  width: 42px;
  height: 42px;
  margin: 16px 16px -58px auto;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.44);
  color: var(--white);
  background: rgba(17, 19, 24, 0.88);
  font-size: 29px;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  place-items: center;
  backdrop-filter: blur(10px);
}

.tool-case-close:hover,
.tool-case-close:focus-visible {
  border-color: var(--white);
  background: var(--blue);
}

.tool-case-header {
  padding: clamp(52px, 6vw, 82px) clamp(28px, 5vw, 72px) clamp(40px, 5vw, 64px);
  color: var(--white);
  background: var(--dark);
}

.tool-case-header > span {
  color: #5070ff;
  font: 700 14px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.04em;
}

.tool-case-header h2 {
  max-width: 900px;
  margin: 24px 0 0;
  font-size: clamp(48px, 6.2vw, 86px);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.tool-case-header p {
  max-width: 760px;
  margin: 26px 0 0;
  color: #c8cad1;
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.6;
}

.tool-case-body {
  padding: clamp(34px, 5vw, 72px);
}

.tool-case-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: clamp(32px, 5vw, 68px);
  align-items: center;
}

.tool-case-media {
  min-width: 0;
  margin: 0;
  border: 1px solid #c8cbd3;
  background: #101217;
}

.tool-case-media img {
  width: 100%;
  height: 520px;
  padding: 18px;
  object-fit: contain;
}

.tool-case-media figcaption {
  padding: 14px 18px 16px;
  border-top: 1px solid #30333a;
  color: #b7bac2;
  font-size: 12px;
  line-height: 1.5;
}

.tool-case-problem > span {
  color: var(--blue);
  font: 700 13px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.tool-case-problem h3 {
  margin: 22px 0 0;
  font-size: clamp(34px, 3.8vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.06em;
}

.tool-case-problem p {
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px solid #c8cbd3;
  color: #666a73;
  font-size: 15px;
  line-height: 1.75;
}

.tool-case-steps-section {
  margin-top: clamp(68px, 8vw, 112px);
}

.tool-case-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.tool-case-section-heading h3,
.tool-case-review h3 {
  margin: 0;
  font-size: clamp(30px, 3vw, 46px);
  letter-spacing: -0.05em;
}

.tool-case-section-heading p {
  margin: 0;
  color: #747882;
  font-size: 14px;
}

.tool-case-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid #c8cbd3;
  list-style: none;
}

.tool-case-steps li {
  min-width: 0;
  min-height: 250px;
  padding: 28px 30px 34px;
}

.tool-case-steps li + li {
  border-left: 1px solid #c8cbd3;
}

.tool-case-steps span {
  color: var(--blue);
  font: 700 14px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.tool-case-steps h4 {
  margin: 60px 0 0;
  font-size: 24px;
  letter-spacing: -0.035em;
}

.tool-case-steps p {
  margin: 14px 0 0;
  color: #62666f;
  font-size: 15px;
  line-height: 1.7;
}

.tool-case-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 44px;
}

.tool-case-gallery[hidden],
.tool-case-online[hidden] {
  display: none !important;
}

.tool-case-gallery figure {
  min-width: 0;
  margin: 0;
  border: 1px solid #c8cbd3;
  background: var(--white);
}

.tool-case-gallery img {
  width: 100%;
  height: 260px;
  padding: 14px;
  object-fit: contain;
}

.tool-case-gallery figcaption {
  padding: 12px 14px 14px;
  border-top: 1px solid #e0e2e7;
  color: #686c75;
  font-size: 12px;
}

.tool-case-review {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: clamp(68px, 8vw, 112px);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid #c8cbd3;
}

.tool-case-review > div {
  min-width: 0;
  min-height: 280px;
  padding: 34px 36px 38px;
}

.tool-case-review > div + div {
  border-left: 1px solid #c8cbd3;
}

.tool-case-review ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 20px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.tool-case-review li {
  position: relative;
  padding-left: 18px;
  color: #4f535c;
  font-size: 15px;
  line-height: 1.55;
}

.tool-case-review li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 7px;
  height: 2px;
  background: var(--blue);
  content: "";
}

.tool-case-review p {
  margin: 34px 0 0;
  color: #565a63;
  font-size: 15px;
  line-height: 1.75;
}

.tool-case-online {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-top: 24px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.tool-case-online:hover,
.tool-case-online:focus-visible {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.personal-section {
  padding-top: clamp(88px, 8vw, 128px);
  padding-bottom: clamp(88px, 8vw, 128px);
}

.personal-intro {
  display: grid;
  grid-template-columns: 60px minmax(320px, 0.9fr) minmax(320px, 0.7fr);
  gap: 24px;
  align-items: end;
}

.personal-intro .section-number {
  align-self: start;
}

.personal-kicker {
  margin: 0 0 12px;
  color: var(--blue);
  font: 700 13px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.08em;
}

.personal-intro h2 {
  font-size: clamp(52px, 5vw, 78px);
  line-height: 1;
}

.personal-lead {
  max-width: 560px;
  margin: 0;
  color: #4e5159;
  font-size: 16px;
  line-height: 1.8;
}

.personal-groups {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(28px, 3.2vw, 52px);
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.personal-group {
  min-width: 0;
}

.personal-group-header {
  min-height: 126px;
}

.personal-group-header > span {
  color: var(--blue);
  font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

.personal-group-header h3 {
  margin: 8px 0 0;
  font-size: clamp(28px, 2.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.055em;
}

.personal-group-header p {
  max-width: 500px;
  margin: 12px 0 0;
  color: #62666e;
  font-size: 14px;
  line-height: 1.65;
}

.personal-photo,
.personal-image {
  position: relative;
  min-width: 0;
  min-height: 0;
  margin: 0;
  overflow: hidden;
}

.personal-photo {
  border: 1px solid var(--line);
  background: #e9e9e7;
}

.personal-image {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: #e9e9e7;
  cursor: zoom-in;
}

.personal-image::after {
  position: absolute;
  inset: 0;
  border: 0 solid rgba(18, 61, 255, 0.9);
  content: "";
  pointer-events: none;
  transition: border-width 220ms ease;
}

.personal-image:hover::after,
.personal-image:focus-visible::after {
  border-width: 4px;
}

.personal-image:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: -3px;
}

.personal-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 520ms var(--ease);
}

.personal-image:hover img,
.personal-image:focus-visible img {
  transform: scale(1.025);
}

.hobby-gallery,
.photography-gallery {
  display: grid;
  min-width: 0;
  height: clamp(390px, 31vw, 470px);
  gap: 14px;
}

.hobby-gallery {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: 1.12fr 0.88fr;
}

.personal-photo-wide {
  grid-column: 1 / -1;
}

.hobby-gallery .personal-photo-wide img {
  object-position: center 44%;
}

.hobby-gallery .personal-photo:nth-child(2) img {
  object-position: center 58%;
}

.hobby-gallery .personal-photo:nth-child(3) img {
  object-position: center 40%;
}

.photography-gallery {
  grid-template-columns: minmax(0, 1.15fr) minmax(190px, 0.85fr);
}

.photography-gallery .personal-photo:first-child img {
  object-position: center;
}

.personal-photo figcaption {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  gap: 7px;
  padding: 42px 18px 16px;
  color: var(--white);
  background: linear-gradient(to bottom, transparent, rgba(7, 8, 11, 0.82));
  pointer-events: none;
}

.personal-photo figcaption span {
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.01em;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(500px, 0.8fr);
  gap: clamp(48px, 4.5vw, 76px);
  align-items: center;
  padding-top: clamp(100px, 9vw, 150px);
  padding-bottom: clamp(100px, 9vw, 150px);
  color: var(--white);
  background: var(--dark);
  box-shadow: 0 0 0 100vmax var(--dark);
  clip-path: inset(0 -100vmax);
}

.contact-copy h2 {
  font-size: clamp(46px, 3.8vw, 68px);
  line-height: 1.08;
}

.contact-copy h2 .title-stop {
  box-shadow: inset 0 0 0 0.045em var(--dark);
}

.contact-actions {
  display: grid;
  gap: 0;
}

.contact-channel {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: 24px;
  padding: 25px 0 27px;
  border-top: 1px solid #4a4d55;
  color: var(--white);
  text-decoration: none;
  transition: color 200ms ease, padding 280ms var(--ease);
}

.contact-channel:nth-child(2) {
  border-bottom: 1px solid #4a4d55;
}

.contact-channel > span {
  color: #8298ff;
  font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.06em;
}

.contact-channel strong {
  min-width: 0;
  margin-top: 8px;
  font-size: clamp(29px, 2.15vw, 38px);
  font-weight: 760;
  line-height: 1.1;
  letter-spacing: -0.045em;
  white-space: nowrap;
}

.contact-channel svg {
  width: 30px;
  height: 30px;
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
}

.contact-channel:hover,
.contact-channel:focus-visible {
  color: #8298ff;
  padding-right: 8px;
  padding-left: 8px;
}

.contact-channel:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.contact-note {
  margin: 18px 0 0;
  color: #a6a9b1;
  font-size: 14px;
}

.site-footer {
  display: flex;
  width: min(calc(100% - var(--gutter) * 2), calc(var(--content) - var(--gutter) * 2));
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  border-top: 1px solid var(--ink);
  color: #34363b;
  font-size: 13px;
}

.site-footer a {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--blue);
}

.lightbox {
  width: min(92vw, 1180px);
  max-width: none;
  max-height: 90vh;
  padding: 44px 44px 28px;
  border: 0;
  color: var(--white);
  background: var(--dark);
}

.lightbox::backdrop {
  background: rgba(3, 5, 12, 0.78);
  backdrop-filter: blur(8px);
}

.lightbox img {
  width: 100%;
  max-height: calc(90vh - 100px);
  object-fit: contain;
}

.lightbox p {
  margin: 14px 0 0;
  color: #c9cbd2;
  font-size: 13px;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  z-index: 2;
  top: 8px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  color: var(--white);
  background: transparent;
  font-size: 30px;
  font-weight: 300;
  cursor: pointer;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 800ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 48px;
  }

  .hero h1 {
    font-size: clamp(58px, 6.2vw, 72px);
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-media {
    gap: 18px;
  }

  .proof-list article {
    align-items: flex-start;
    flex-direction: column;
    gap: 15px;
  }

  .tools-intro {
    grid-template-columns: 55px 1fr;
  }

  .tools-intro > p {
    grid-column: 2;
  }

  .tool-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tool-row {
    grid-column: auto;
  }

  .contact-section {
    gap: 44px;
  }
}

@media (max-width: 900px) {
  .site-header {
    height: 68px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border: 0;
    background: transparent;
    font-size: 14px;
    font-weight: 650;
  }

  .menu-icon {
    position: relative;
    width: 22px;
    height: 12px;
    border-top: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
  }

  .menu-icon::after {
    position: absolute;
    top: 4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
    content: "";
  }

  .site-nav {
    position: fixed;
    z-index: -1;
    top: 68px;
    right: 0;
    left: 0;
    display: grid;
    height: auto;
    padding: 24px var(--gutter) 30px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 18px 40px rgba(20, 25, 40, 0.08);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 220ms ease, transform 280ms var(--ease);
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-nav a {
    min-height: 44px;
  }

  .site-nav a::after {
    display: none;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 52px;
    padding-top: 64px;
  }

  .hero h1 {
    font-size: clamp(56px, 10vw, 86px);
    white-space: normal;
  }

  .portrait-frame {
    width: 90%;
    margin-left: auto;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-media {
    grid-template-columns: 1fr;
  }

  .digital-human-case {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .digital-human-media {
    width: min(100%, 330px);
  }

  .secondary-project-heading {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .echo-account-evidence {
    grid-template-columns: 1fr;
  }

  .secondary-project-flow,
  .secondary-project-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .secondary-project-flow > div:nth-child(3),
  .secondary-project-flow > div:nth-child(4),
  .secondary-project-metrics > div:nth-child(3),
  .secondary-project-metrics > div:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .secondary-project-flow > div:nth-child(3),
  .secondary-project-metrics > div:nth-child(3) {
    border-left: 0;
  }

  .evidence-stage {
    grid-template-columns: 1fr;
  }

  .evidence-rail {
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    grid-template-rows: auto;
    overflow-x: auto;
  }

  .evidence-thumb {
    min-height: 116px;
    border-top: 1px solid var(--line);
    border-right: 1px solid var(--line);
  }

  .method-grid {
    grid-template-columns: 1fr 1fr;
  }

  .method-grid article:nth-child(3) {
    border-left: 0;
  }

  .method-grid article:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .responsibility-boundary {
    grid-template-columns: 1fr;
  }

  .responsibility-boundary > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .tools-intro {
    grid-template-columns: 44px 1fr;
  }

  .personal-intro {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .personal-lead {
    grid-column: 2;
  }

  .personal-groups {
    grid-template-columns: 1fr;
  }

  .personal-group-header {
    min-height: 0;
    margin-bottom: 24px;
  }

  .hobby-gallery,
  .photography-gallery {
    height: 430px;
  }

  .contact-section {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    width: 100%;
    max-width: 720px;
  }

  .tool-case-hero {
    grid-template-columns: 1fr;
  }

  .tool-case-media img {
    height: 460px;
  }

  .tool-case-steps {
    grid-template-columns: 1fr;
  }

  .tool-case-steps li {
    min-height: 0;
  }

  .tool-case-steps li + li {
    border-top: 1px solid #c8cbd3;
    border-left: 0;
  }

  .tool-case-steps h4 {
    margin-top: 32px;
  }

  .tool-case-review {
    grid-template-columns: 1fr;
  }

  .tool-case-review > div + div {
    border-top: 1px solid #c8cbd3;
    border-left: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 20px;
  }

  .brand {
    font-size: 18px;
  }

  .hero {
    gap: 36px;
    padding-top: 48px;
  }

  .hero h1 {
    font-size: clamp(48px, 13vw, 68px);
    line-height: 1.02;
  }

  .hero-lead {
    font-size: 16px;
    line-height: 1.7;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
    min-height: 54px;
  }

  .hero-facts {
    display: grid;
    gap: 5px;
  }

  .hero-facts span:not(:last-child)::after {
    display: none;
  }

  .portrait-frame {
    width: 100%;
  }

  .portrait-frame img {
    aspect-ratio: 1 / 1;
  }

  .frame-label-right {
    right: -15px;
  }

  .frame-label-left {
    left: -21px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-heading h2,
  .tools-intro h2,
  .personal-intro h2,
  .contact-copy h2 {
    font-size: clamp(40px, 11vw, 58px);
  }

  .section-number {
    font-size: 18px;
  }

  .project-grid {
    margin-top: 48px;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid article {
    min-height: 0;
  }

  .project-description {
    font-size: 16px;
  }

  .project-media {
    grid-template-columns: 1fr;
  }

  .media-slot-phone .slot-inner,
  .slot-inner {
    min-height: 270px;
  }

  .proof-list {
    grid-template-columns: 1fr;
  }

  .digital-human-case {
    margin-top: 56px;
    padding: 30px 22px 34px;
  }

  .digital-human-copy h4 {
    font-size: clamp(36px, 10.5vw, 48px);
  }

  .digital-human-lead {
    font-size: 15px;
  }

  .digital-human-flow {
    grid-template-columns: 1fr;
  }

  .digital-human-flow li {
    padding: 20px 16px 22px;
  }

  .digital-human-flow li + li {
    border-top: 1px solid #41444d;
    border-left: 0;
  }

  .digital-human-flow h5 {
    margin-top: 14px;
  }

  .proof-list article {
    min-height: 0;
    flex-direction: row;
    align-items: center;
  }

  .proof-list article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .secondary-project {
    margin-right: 0;
    margin-left: 0;
    padding: 32px 22px 36px;
  }

  .secondary-project h3 {
    font-size: clamp(32px, 9.5vw, 40px);
  }

  .echo-account-evidence {
    gap: 24px;
    margin-top: 32px;
    padding-top: 26px;
  }

  .echo-account-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .echo-account-image {
    height: 310px;
  }

  .secondary-project-flow,
  .secondary-project-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .secondary-project-flow > div {
    min-height: 0;
    padding: 20px 14px 22px;
  }

  .secondary-project-flow > div + div,
  .secondary-project-flow > div:nth-child(3),
  .secondary-project-metrics > div + div,
  .secondary-project-metrics > div:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .secondary-project-flow > div:nth-child(n + 3),
  .secondary-project-metrics > div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .secondary-project-flow > div:nth-child(3),
  .secondary-project-metrics > div:nth-child(3) {
    border-left: 0;
  }

  .secondary-project-flow span {
    margin-bottom: 18px;
  }

  .secondary-project-metrics > div {
    padding: 18px 12px 20px;
  }

  .evidence-counter {
    position: absolute;
    top: 2px;
    right: 0;
  }

  .evidence-counter b {
    font-size: 25px;
  }

  .evidence-tabs {
    grid-template-columns: repeat(5, minmax(105px, 1fr));
    overflow-x: auto;
  }

  .evidence-tabs button {
    min-height: 58px;
    padding: 0 12px;
    font-size: 15px;
  }

  .evidence-placeholder {
    min-height: 360px;
  }

  .evidence-placeholder.has-evidence {
    min-height: 0;
    padding: 18px 18px 16px;
  }

  .evidence-table-meta {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 7px 12px;
    align-items: start;
  }

  .evidence-table-meta small {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .evidence-table-meta > span {
    grid-column: 2;
    grid-row: 1;
  }

  .evidence-gallery-account {
    display: flex;
    gap: 14px;
    padding-bottom: 14px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-color: var(--blue) #e7e9ee;
    scrollbar-width: thin;
    scroll-snap-type: x mandatory;
  }

  .account-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .evidence-gallery-account .evidence-media-card,
  .viral-screenshot-strip .evidence-media-card {
    flex: 0 0 min(74vw, 280px);
  }

  .evidence-video-feature {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 16px;
  }

  .evidence-video-shell {
    width: min(100%, 310px);
  }

  .evidence-video-copy h4 {
    font-size: 30px;
  }

  .viral-screenshot-heading {
    display: grid;
    gap: 5px;
  }

  .evidence-caption {
    display: grid;
  }

  .evidence-caption .button {
    justify-self: start;
  }

  .evidence-caption-actions {
    justify-content: flex-start;
  }

  .replacement-note {
    align-items: flex-start;
  }

  .replacement-note code {
    word-break: break-all;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .method-grid article {
    min-height: 250px;
    border-top: 1px solid var(--line);
    border-left: 0 !important;
  }

  .method-grid h3 {
    margin-top: 52px;
  }

  .responsibility-boundary > div {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .tools-intro {
    grid-template-columns: 1fr;
  }

  .tools-intro > p {
    grid-column: 1;
  }

  .personal-section {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .personal-intro {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .personal-lead {
    grid-column: 1;
    margin-top: 8px;
  }

  .personal-groups {
    gap: 52px;
    margin-top: 36px;
    padding-top: 28px;
  }

  .personal-group-header {
    margin-bottom: 20px;
  }

  .hobby-gallery {
    height: 430px;
    gap: 12px;
  }

  .photography-gallery {
    grid-template-columns: 1.08fr 0.92fr;
    height: 300px;
    gap: 12px;
  }

  .personal-photo figcaption {
    padding: 34px 12px 12px;
  }

  .contact-channel {
    padding: 22px 0 24px;
  }

  .contact-channel strong {
    font-size: clamp(23px, 6.5vw, 31px);
  }

  .contact-channel svg {
    width: 26px;
    height: 26px;
  }

  .tool-row {
    min-height: 0;
    grid-column: 1;
    gap: 20px;
    padding: 24px;
  }

  .tool-list {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .tool-index {
    align-self: start;
  }

  .tool-preview {
    height: 210px;
  }

  .tool-link {
    margin: 0;
  }

  .tool-detail p {
    margin: 0;
  }

  .tool-case-study {
    width: 100vw;
    max-height: 100dvh;
    margin: 0;
  }

  .tool-case-close {
    top: 12px;
    margin: 12px 12px -54px auto;
  }

  .tool-case-header {
    padding: 54px 20px 38px;
  }

  .tool-case-header h2 {
    margin-top: 20px;
    font-size: clamp(42px, 12vw, 58px);
  }

  .tool-case-header p {
    margin-top: 20px;
    font-size: 16px;
  }

  .tool-case-body {
    padding: 28px 20px 54px;
  }

  .tool-case-media img {
    height: 390px;
    padding: 12px;
  }

  .tool-case-problem h3 {
    font-size: 34px;
  }

  .tool-case-section-heading {
    display: grid;
    gap: 8px;
  }

  .tool-case-steps li,
  .tool-case-review > div {
    padding: 26px 22px 30px;
  }

  .tool-case-gallery {
    grid-template-columns: 1fr;
  }

  .tool-case-gallery img {
    height: 210px;
  }

  .tool-case-review ul {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    grid-template-columns: 1fr;
  }

  .contact-actions p {
    display: grid;
    grid-column: 1;
    justify-content: start;
    gap: 8px;
  }

  .contact-actions p span {
    display: none;
  }

  .site-footer {
    min-height: 96px;
  }

  .lightbox {
    width: 96vw;
    padding: 42px 12px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}