:root {
  --ink: #20231f;
  --muted: #5f645e;
  --subtle: #7b8078;
  --paper: #fbfbf7;
  --surface: #ffffff;
  --surface-cool: #f5f7f5;
  --soft: #f1f4ec;
  --line: #d9dacd;
  --line-strong: #b7baa8;
  --olive: #687c4f;
  --olive-dark: #344622;
  --title-olive: #687c4f;
  --sage: #dfe8d6;
  --brass: #a37d2f;
  --blue-gray: #536578;
  --focus: #78905b;
  --shadow: 0 20px 55px rgba(32, 35, 31, 0.1);
  --shadow-soft: 0 10px 28px rgba(32, 35, 31, 0.07);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 32px;
  background: rgba(251, 251, 247, 0.92);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--olive-dark);
  border-radius: 50%;
  font-size: 0.78rem;
  color: var(--olive-dark);
  background: var(--soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.92rem;
  color: var(--muted);
  white-space: nowrap;
}

.nav-links a {
  padding: 8px 0;
  border-bottom: 1px solid transparent;
}

.nav-links a:hover {
  color: var(--ink);
  border-color: var(--olive);
}

:focus-visible {
  outline: 3px solid rgba(120, 144, 91, 0.38);
  outline-offset: 3px;
}

.section-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.62fr);
  align-items: center;
  gap: 72px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 7% -7% auto 18%;
  height: 58%;
  background: url("./assets/hero-world-map-bg.png") center / contain no-repeat;
  opacity: 0.8;
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--olive-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  color: var(--title-olive);
}

h1 {
  margin: 0;
  font-size: clamp(3.2rem, 7.2vw, 7rem);
  line-height: 0.92;
  font-weight: 750;
  letter-spacing: 0;
  white-space: nowrap;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4.4vw, 4.35rem);
  line-height: 1.05;
  font-weight: 720;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.35;
}

h4 {
  margin: 0;
  font-size: 1rem;
}

.malay-name {
  margin: 20px 0 0;
  color: var(--blue-gray);
  font-weight: 600;
}

.hero-statement {
  max-width: 780px;
  margin: 28px 0 0;
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
  line-height: 1.7;
}

.hero-tags,
.hero-actions,
.writing-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags {
  margin-top: 30px;
}

.hero-tags span,
.writing-topics span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
}

.hero-actions {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 780px;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-weight: 700;
  background: var(--surface);
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  border-color: var(--olive-dark);
  background: var(--olive-dark);
  color: white;
}

.button.primary:hover {
  background: #263718;
}

.button.ghost {
  border-color: var(--line);
  color: var(--muted);
}

.hero-panel {
  padding: 28px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(245, 247, 245, 0.72));
  box-shadow: var(--shadow-soft);
}

.panel-line {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.panel-line span {
  color: var(--muted);
  font-size: 0.82rem;
}

.hero-panel p {
  margin: 28px 0 0;
  color: var(--muted);
}

.intro-grid,
.content-grid,
.contact-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.46fr) minmax(0, 1fr);
  gap: 72px;
  border-top: 1px solid var(--line);
}

.content-grid {
  grid-template-columns: minmax(280px, 0.42fr) minmax(0, 1fr);
  align-items: center;
  gap: 76px;
}

.about-section {
  border-top: 1px solid var(--line);
}

.about-heading {
  margin-bottom: 34px;
}

.about-heading h2 {
  white-space: nowrap;
}

.about-body {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1fr);
  gap: 58px;
  align-items: center;
}

.section-illustration {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.section-illustration img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-illustration {
  aspect-ratio: 1.35;
}

.about-illustration img {
  object-position: center;
}

.writing-illustration {
  align-self: center;
  aspect-ratio: 1.45;
}

.writing-illustration img {
  object-position: center;
}

.prose p,
.section-lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.prose p + p {
  margin-top: 18px;
}

.about-body .prose p + p {
  margin-top: 36px;
}

.section-heading {
  margin-bottom: 42px;
}

.section-heading.wide {
  max-width: 900px;
}

.thinking-title {
  display: grid;
  gap: 28px;
}

.thinking-title span {
  display: block;
}

.thinking-title span:last-child {
  font-size: 0.42em;
  line-height: 1.25;
  font-weight: 650;
  color: var(--olive-dark);
}

.section-lead {
  margin-top: 20px;
  max-width: 880px;
}

.timeline {
  position: relative;
  border-top: 1px solid var(--ink);
}

.timeline::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(760px, 72vw);
  aspect-ratio: 1;
  background: url("./assets/timeline-globe-user.png") center / contain no-repeat;
  opacity: 1;
  transform: translate(-50%, -50%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), #000 52%, #000 100%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), #000 52%, #000 100%);
  pointer-events: none;
  z-index: 0;
}

.timeline article {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 160px 1fr 1.2fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.timeline time {
  color: var(--olive-dark);
  font-weight: 800;
}

.timeline p {
  margin: 0;
  color: var(--muted);
}

.thinking-section {
  background: var(--surface-cool);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.thinking-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 48px;
  align-items: start;
}

.model-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--olive-dark);
  border-left: 1px solid var(--line);
  margin-top: -68px;
}

.model-points div {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 14px;
  row-gap: 10px;
  align-items: center;
  min-height: 118px;
  padding: 16px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.model-points span,
.small-icon,
.case-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 28px;
  margin-bottom: 12px;
  border: 1px solid var(--olive);
  border-radius: 999px;
  color: var(--olive-dark);
  font-weight: 800;
  font-size: 0.78rem;
  background: var(--soft);
}

.model-points p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.model-points span {
  grid-column: 1;
  display: flex;
  width: max-content;
  margin-bottom: 0;
}

.model-points strong {
  grid-column: 2;
}

.model-figure {
  margin: 46px 0 0;
}

.model-figure a {
  display: block;
  overflow-x: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.model-figure img {
  width: 100%;
  min-width: 760px;
}

figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--olive-dark);
  border-left: 1px solid var(--line);
}

.skill-grid article {
  min-height: 260px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.64);
  transition: background 0.18s ease, box-shadow 0.18s ease;
}

.skill-grid article:hover {
  background: var(--surface);
  box-shadow: inset 0 3px 0 var(--sage);
}

.skill-grid p,
.case-card p,
.case-feature p,
.compact-list p {
  color: var(--muted);
}

.case-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.case-feature {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 28px;
  padding: 34px;
  border: 1px solid var(--olive-dark);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.case-feature dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 28px 0 0;
}

.case-feature dl div {
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
}

.case-feature dt {
  font-weight: 800;
  color: var(--ink);
}

.case-feature dd {
  margin: 6px 0 0;
  color: var(--muted);
}

.case-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.case-card span {
  display: block;
  margin-top: 20px;
  color: var(--olive-dark);
  font-weight: 700;
  font-size: 0.9rem;
}

.portfolio-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.group-title {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--olive-dark);
}

.compact-list article {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.compact-list p {
  margin: 8px 0 0;
}

.content-section {
  background: #eef3ea;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.writing-copy .section-lead {
  max-width: 430px;
  font-size: 1.18rem;
  line-height: 1.78;
}

.writing-copy h2 {
  white-space: nowrap;
}

.writing-visual {
  display: grid;
  gap: 28px;
  align-items: start;
}

.writing-topics {
  align-content: start;
  justify-content: end;
  padding-top: 0;
  gap: 14px;
}

.writing-topics span {
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.66);
  border-color: var(--line-strong);
  color: var(--muted);
  font-size: 0.98rem;
}

.writing-illustration {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  aspect-ratio: 2.56;
}

.contact-section {
  align-items: start;
}

.contact-lines {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  color: var(--muted);
  font-weight: 650;
}

.contact-lines a {
  color: var(--olive-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.qr-grid figure {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.qr-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.chat-widget {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
}

.chat-toggle {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 1px solid var(--olive-dark);
  border-radius: 50%;
  background: var(--olive-dark);
  color: white;
  font-weight: 850;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.chat-panel {
  position: absolute;
  right: 0;
  bottom: 72px;
  width: min(380px, calc(100vw - 32px));
  max-height: min(620px, calc(100vh - 120px));
  display: none;
  overflow: auto;
  border: 1px solid var(--olive-dark);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.chat-panel.open {
  display: block;
}

.chat-header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.chat-header div {
  display: grid;
  gap: 2px;
}

.chat-header span {
  color: var(--muted);
  font-size: 0.78rem;
}

.chat-header button {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.chat-intro,
.chat-answer {
  margin: 16px;
  padding: 16px;
  color: var(--ink);
}

.chat-intro {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.chat-answer {
  margin-top: 0;
  border-left: 3px solid var(--olive);
  background: var(--soft);
  white-space: pre-line;
}

.chat-questions {
  display: grid;
  gap: 8px;
  padding: 0 16px 12px;
}

.chat-questions button {
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  font: inherit;
}

.chat-questions button:hover,
.chat-questions button.active {
  border-color: var(--olive);
  background: var(--soft);
}

.chat-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  padding: 0 16px 16px;
}

.chat-form input,
.chat-form button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
}

.chat-form input {
  min-width: 0;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--ink);
}

.chat-form button {
  padding: 0 14px;
  background: var(--olive-dark);
  color: var(--surface);
  cursor: pointer;
}

@media (max-width: 980px) {
  .hero,
  .intro-grid,
  .content-grid,
  .contact-section,
  .thinking-grid,
  .portfolio-columns,
  .about-body {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero {
    min-height: auto;
    padding-top: 70px;
  }

  .hero-panel {
    border-left: 0;
    border-top: 1px solid var(--ink);
    padding-left: 0;
    padding-top: 20px;
  }

  .about-heading h2 {
    white-space: normal;
  }

  .about-illustration,
  .writing-illustration {
    aspect-ratio: 1.6;
  }

  .writing-topics {
    justify-content: flex-start;
  }

  .timeline article {
    grid-template-columns: 120px 1fr;
  }

  .timeline article p {
    grid-column: 2;
  }

  .skill-grid,
  .case-list,
  .case-feature dl {
    grid-template-columns: 1fr 1fr;
  }

  .case-feature {
    grid-column: auto;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 64px;
    padding: 0 18px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-links {
    max-width: calc(100vw - 82px);
    gap: 12px;
    overflow-x: auto;
    font-size: 0.78rem;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .section-shell {
    width: min(100% - 28px, 1120px);
    padding: 70px 0;
  }

  h1 {
    font-size: clamp(2.6rem, 12vw, 4.4rem);
  }

  h2 {
    font-size: clamp(1.9rem, 10vw, 3rem);
  }

  .hero-statement {
    font-size: 1.08rem;
  }

  .hero-actions .button {
    width: 100%;
  }

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

  .hero::before {
    inset: 12% -28% auto -10%;
    height: 42%;
  }

  .timeline article,
  .skill-grid,
  .case-list,
  .case-feature dl,
  .model-points,
  .qr-grid {
    grid-template-columns: 1fr;
  }

  .timeline article p {
    grid-column: auto;
  }

  .skill-grid article {
    min-height: auto;
  }

  .model-figure img {
    min-width: 720px;
  }

  .chat-widget {
    right: 14px;
    bottom: 14px;
  }

  .chat-toggle {
    width: 54px;
    height: 54px;
  }

  .chat-panel {
    right: -4px;
    bottom: 66px;
    max-height: calc(100vh - 104px);
  }
}