:root {
  --bg: #f4f0e8;
  --paper: #fffdf8;
  --ink: #151515;
  --muted: #696969;
  --soft: #d8d0c5;
  --line: rgba(21, 21, 21, 0.14);
  --dark: #111111;
  --blue: #315f8c;
  --green: #64766a;
  --clay: #b8624f;
  --shadow: 0 18px 55px rgba(43, 37, 30, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.58;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.055;
  background-image:
    radial-gradient(circle at 20% 30%, #151515 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, #151515 0 1px, transparent 1px);
  background-size: 7px 7px, 11px 11px;
  mix-blend-mode: multiply;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 38px;
  background: rgba(244, 240, 232, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  font-size: 15px;
  font-weight: 800;
}

.nav {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  gap: 44px;
  align-items: end;
  width: min(1180px, calc(100% - 56px));
  min-height: calc(100vh - 64px);
  margin: 0 auto;
  padding: 86px 0 54px;
}

.hero-copy-block {
  padding-bottom: 18px;
}

.eyebrow,
.tag {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(48px, 7.2vw, 96px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  max-width: 820px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.1;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.24;
}

.hero-copy {
  max-width: 620px;
  color: var(--muted);
  font-size: 18px;
}

.hero-meta {
  display: grid;
  gap: 8px;
  margin: 30px 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-meta span {
  padding-left: 14px;
  border-left: 3px solid var(--ink);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  font-size: 14px;
  font-weight: 800;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.button.ghost {
  background: transparent;
}

.button.disabled {
  cursor: default;
  opacity: 0.72;
}

.cover-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 92px;
  gap: 12px;
}

.cover {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: end;
  overflow: hidden;
  min-height: 100%;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.42s ease, filter 0.42s ease;
}

.cover::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.9;
}

.cover::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 253, 248, 0.45);
  pointer-events: none;
}

.cover span,
.cover h2,
.cover p {
  position: relative;
  z-index: 1;
}

.cover span {
  margin-bottom: auto;
  color: rgba(255, 253, 248, 0.82);
  font-weight: 800;
}

.cover h2 {
  color: #fffdf8;
  font-size: 28px;
}

.cover p {
  margin-bottom: 0;
  color: rgba(255, 253, 248, 0.78);
  font-size: 13px;
}

.cover:hover {
  transform: translateY(-8px);
  filter: contrast(1.04) saturate(0.94);
}

.cover:hover::after {
  border-color: rgba(255, 253, 248, 0.82);
}

.cover-large {
  grid-column: span 4;
  grid-row: span 3;
  background: #222;
}

.cover-large::before {
  background:
    linear-gradient(140deg, rgba(17, 17, 17, 0.2), rgba(17, 17, 17, 0.78)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 34px),
    linear-gradient(35deg, #111, #315f8c 54%, #b8624f);
}

.cover-tall {
  grid-column: span 2;
  grid-row: span 4;
}

.cover-tall::before {
  background:
    linear-gradient(180deg, rgba(17, 17, 17, 0.1), rgba(17, 17, 17, 0.78)),
    linear-gradient(145deg, #64766a, #1f2421 62%, #111);
}

.cover-small {
  grid-column: span 2;
  grid-row: span 2;
}

.cover-small::before {
  background:
    linear-gradient(135deg, rgba(17, 17, 17, 0.12), rgba(17, 17, 17, 0.75)),
    linear-gradient(45deg, #b8624f, #f4f0e8);
}

.cover-wide {
  grid-column: span 4;
  grid-row: span 2;
}

.cover-wide::before {
  background:
    linear-gradient(135deg, rgba(17, 17, 17, 0.18), rgba(17, 17, 17, 0.78)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 24px),
    linear-gradient(120deg, #111, #64766a);
}

.section {
  width: min(1120px, calc(100% - 56px));
  margin: 0 auto;
  padding: 86px 0;
}

.section-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 42px;
  align-items: start;
}

.intro p,
.work-row > p,
.case-copy p,
.method-grid p,
.reserved-grid p,
.reserved-list p,
.resume p,
.contact p {
  color: var(--muted);
}

.intro p {
  max-width: 780px;
  font-size: 18px;
}

.profile-notes {
  display: grid;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.profile-notes div {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.profile-notes div:last-child {
  border-bottom: 0;
}

.profile-notes strong {
  display: block;
  margin-bottom: 14px;
  color: var(--blue);
}

.profile-notes span {
  color: var(--muted);
}

.work-list {
  display: grid;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.work-row {
  display: grid;
  grid-template-columns: 74px minmax(250px, 0.42fr) minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  min-height: 126px;
  padding: 24px;
  border-bottom: 1px solid var(--line);
  transition: background 0.28s ease, padding-left 0.28s ease;
}

.work-row:last-child {
  border-bottom: 0;
}

.work-row:hover {
  padding-left: 34px;
  background: rgba(49, 95, 140, 0.055);
}

.work-index {
  color: var(--blue);
  font-size: 18px;
  font-weight: 900;
}

.work-row p {
  margin-bottom: 0;
}

.showcase {
  width: 100%;
  max-width: none;
  padding: 90px max(28px, calc((100% - 1120px) / 2));
  background: var(--dark);
  color: var(--paper);
}

.showcase .section-heading {
  border-color: rgba(255, 253, 248, 0.18);
}

.showcase .eyebrow,
.showcase .tag {
  color: #b8cce0;
}

.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 28px;
}

.case-visual {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  grid-template-rows: 220px 180px;
  gap: 12px;
}

.case-visual div {
  border: 1px solid rgba(255, 253, 248, 0.16);
  background: linear-gradient(135deg, #315f8c, #111);
  transition: transform 0.38s ease, opacity 0.38s ease;
}

.case-visual:hover div:first-child {
  transform: translateY(-8px);
}

.case-visual:hover div:nth-child(2) {
  transform: translateX(8px);
}

.case-visual:hover div:nth-child(3) {
  transform: translate(8px, 8px);
}

.case-visual div:first-child {
  grid-row: span 2;
  background:
    repeating-linear-gradient(90deg, rgba(255, 253, 248, 0.1) 0 1px, transparent 1px 32px),
    linear-gradient(135deg, #111, #315f8c 58%, #b8624f);
}

.case-visual div:nth-child(2) {
  background: linear-gradient(145deg, #64766a, #111);
}

.case-visual div:nth-child(3) {
  background: linear-gradient(145deg, #b8624f, #111);
}

.case-copy {
  display: flex;
  flex-direction: column;
  justify-content: end;
  padding: 28px;
  border: 1px solid rgba(255, 253, 248, 0.16);
}

.case-copy p {
  color: rgba(255, 253, 248, 0.72);
}

.reserved {
  padding-top: 70px;
}

.reserved-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.reserved-grid article {
  min-height: 210px;
  padding: 22px;
  background: rgba(255, 253, 248, 0.68);
  border: 1px solid var(--line);
  box-shadow: 0 12px 36px rgba(43, 37, 30, 0.07);
}

.reserved-grid span {
  display: block;
  margin-bottom: 42px;
  color: var(--blue);
  font-weight: 900;
}

.reserved-details {
  margin-top: 12px;
  background: rgba(255, 253, 248, 0.62);
  border: 1px solid var(--line);
}

.reserved-details summary {
  cursor: pointer;
  padding: 18px 22px;
  color: var(--ink);
  font-weight: 800;
}

.reserved-list {
  display: grid;
  gap: 10px;
  padding: 0 22px 22px;
}

.reserved-list p {
  margin: 0;
}

.reserved-list strong {
  color: var(--ink);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.method-grid div {
  min-height: 255px;
  padding: 24px;
  border-right: 1px solid var(--line);
  transition: background 0.3s ease;
}

.method-grid div:last-child {
  border-right: 0;
}

.method-grid div:hover {
  background: rgba(21, 21, 21, 0.035);
}

.method-grid span {
  display: block;
  margin-bottom: 52px;
  color: var(--blue);
  font-weight: 900;
}

.resume {
  width: 100%;
  max-width: none;
  padding: 90px max(28px, calc((100% - 1120px) / 2));
  background: #e8e1d7;
}

.resume-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.resume-card,
.resume-block,
.contact-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.resume-card {
  position: sticky;
  top: 84px;
  padding: 24px;
}

.resume-card h3 {
  margin-bottom: 10px;
  font-size: 25px;
}

.resume-card .button {
  width: 100%;
  margin-top: 24px;
}

.resume-content {
  display: grid;
  gap: 12px;
}

.resume-block {
  padding: 24px;
}

.resume-block h3 {
  margin-bottom: 12px;
}

.tool-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.tool-columns p {
  min-height: 76px;
  margin: 0;
  padding: 14px;
  background: rgba(21, 21, 21, 0.035);
  border: 1px solid var(--line);
}

.tool-columns strong {
  display: block;
  margin-bottom: 4px;
  color: var(--blue);
}

.resume-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.contact-panel {
  padding: 26px;
}

.contact-panel p {
  margin-bottom: 10px;
}

.contact-panel p:last-child {
  margin-bottom: 0;
}

.footer {
  padding: 30px 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer p {
  margin: 0;
}

.reveal-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.grain-transition {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  height: 0;
  z-index: 80;
  pointer-events: none;
  opacity: 0;
  background:
    linear-gradient(90deg, transparent, rgba(17, 17, 17, 0.2), transparent),
    radial-gradient(circle at 18% 36%, rgba(17, 17, 17, 0.38) 0 1px, transparent 1.5px),
    radial-gradient(circle at 58% 72%, rgba(17, 17, 17, 0.28) 0 1px, transparent 1.5px),
    radial-gradient(circle at 84% 28%, rgba(17, 17, 17, 0.32) 0 1px, transparent 1.5px);
  background-size: 100% 100%, 9px 9px, 13px 13px, 17px 17px;
  transform: translateY(-120%);
  mix-blend-mode: multiply;
}

.grain-transition.is-active {
  animation: grain-strip 0.78s cubic-bezier(0.72, 0, 0.16, 1) both;
}

@keyframes grain-strip {
  0% {
    opacity: 0;
    height: 18vh;
    transform: translateY(-120%);
  }

  24% {
    opacity: 0.42;
  }

  58% {
    opacity: 0.34;
    height: 24vh;
  }

  100% {
    height: 18vh;
    opacity: 0;
    transform: translateY(118vh);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 980px) {
  .hero,
  .intro-grid,
  .case-layout,
  .resume-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
  }

  .cover-wall {
    grid-auto-rows: 84px;
  }

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

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

  .method-grid div:nth-child(2) {
    border-right: 0;
  }

  .method-grid div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .resume-card {
    position: static;
  }
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
    padding: 14px 18px;
    gap: 14px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px 14px;
  }

  .hero,
  .section {
    width: min(100% - 32px, 1120px);
  }

  .hero {
    padding-bottom: 42px;
  }

  .hero-actions {
    width: 100%;
  }

  .button {
    flex: 1 1 150px;
  }

  .cover-wall {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(170px, auto);
  }

  .cover-large,
  .cover-tall,
  .cover-small,
  .cover-wide {
    grid-column: auto;
    grid-row: auto;
  }

  .work-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .case-visual,
  .method-grid,
  .reserved-grid,
  .tool-columns {
    grid-template-columns: 1fr;
  }

  .case-visual {
    grid-template-rows: repeat(3, 170px);
  }

  .case-visual div:first-child {
    grid-row: auto;
  }

  .method-grid div,
  .method-grid div:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-grid div:last-child {
    border-bottom: 0;
  }
}