/* Design tokens — soft bento + bold accent */
:root {
  --bg: #f9f7f2;
  --bg-muted: #ebe3d5;
  --card: #ffffff;
  --text: #111111;
  --text-muted: #5c5c5c;
  --accent: #ccff00;
  --accent-coral: #f47d42;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --border-subtle: 1px solid color-mix(in srgb, var(--text) 7%, transparent);
  --shadow: 0 8px 28px rgba(17, 17, 17, 0.05);
  --shadow-hover: 0 16px 40px rgba(17, 17, 17, 0.09);
  --font-system: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-system);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: color-mix(in srgb, var(--accent) 55%, var(--card));
  color: var(--text);
}

:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--text) 35%, transparent);
  outline-offset: 3px;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--header-h);
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
}

.logo {
  font-family: var(--font-system);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo-dot {
  color: var(--accent-coral);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  color: var(--text-muted);
  transition: color 0.25s var(--ease-out);
}

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

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--text);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease-out);
}

.nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem) 1.5rem;
  background: var(--card);
  box-shadow: var(--shadow);
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav a {
  font-weight: 600;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--bg-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-system);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition:
    transform 0.25s var(--ease-out),
    background 0.25s var(--ease-out),
    box-shadow 0.25s var(--ease-out);
}

.btn-primary {
  background: var(--text);
  color: var(--card);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.3s var(--ease-out);
}

.btn-primary:hover .btn-arrow {
  transform: translate(3px, -3px);
}

/* Layout */
main {
  padding: 0 clamp(1.25rem, 4vw, 3rem) 4rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Hero */
.hero {
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3rem, 8vw, 6rem);
}

.hero-title {
  margin: 0 0 clamp(2rem, 5vw, 3rem);
  font-family: var(--font-system);
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-bento {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr 0.6fr;
  gap: 1rem;
}

.hero-card {
  background: var(--card);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow);
  transition:
    transform 0.45s var(--ease-out),
    box-shadow 0.45s var(--ease-out),
    border-color 0.35s var(--ease-out);
}

.hero-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--text) 12%, transparent);
}

.hero-card-main p {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--bg-muted);
}

.tag-accent {
  background: color-mix(in srgb, var(--accent-coral) 18%, var(--card));
  color: var(--accent-coral);
}

.hero-card-stat,
.hero-card-accent {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.35rem;
}

.hero-card-accent {
  background: var(--accent);
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.65;
}

.stat-value {
  font-family: var(--font-system);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.2;
}

/* Sections */
.section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  flex-wrap: wrap;
}

.section-title {
  margin: 0;
  font-family: var(--font-system);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Grids */
.grid {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}

.grid-works {
  grid-template-columns: repeat(4, 1fr);
}

.grid-blog {
  grid-template-columns: repeat(5, 1fr);
}

/* Cards — cover and title separated */
.card--split {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: transparent;
  box-shadow: none;
  border-radius: 0;
  overflow: visible;
  cursor: default;
}

.card-cover {
  position: relative;
}

.card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-muted);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  transition:
    transform 0.5s var(--ease-out),
    box-shadow 0.5s var(--ease-out),
    border-color 0.4s var(--ease-out);
}

.card--split:hover .card-media {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--text) 11%, transparent);
}

.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 45%,
    color-mix(in srgb, var(--text) 18%, transparent) 100%
  );
  opacity: 0;
  transition: opacity 0.45s var(--ease-out);
  pointer-events: none;
}

.card--split:hover .card-media::after {
  opacity: 1;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform 0.7s var(--ease-out),
    filter 0.5s var(--ease-out);
}

.card--split:hover .card-media img {
  transform: scale(1.04);
  filter: brightness(1.02) saturate(1.04);
}

.card-overlay {
  position: absolute;
  inset: auto 0.85rem 0.85rem 0.85rem;
  display: flex;
  justify-content: flex-end;
  z-index: 1;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 0.35s var(--ease-out),
    transform 0.35s var(--ease-out);
}

.card--split:hover .card-overlay {
  opacity: 1;
  transform: translateY(0);
}

.card-cta {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  color: var(--text);
  font-size: 1rem;
  backdrop-filter: blur(8px);
  border: var(--border-subtle);
  box-shadow: 0 4px 16px rgba(17, 17, 17, 0.12);
  transition: transform 0.35s var(--ease-out), background 0.35s var(--ease-out);
}

.card--split:hover .card-cta {
  transform: rotate(-45deg);
  background: var(--card);
}

.card-badge {
  position: absolute;
  top: 0.65rem;
  left: 0.65rem;
  z-index: 2;
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--text);
  border: var(--border-subtle);
}

.card-body {
  padding: 0 0.15rem;
}

.card-title {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: color 0.3s var(--ease-out);
}

.card--split:hover .card-title {
  color: color-mix(in srgb, var(--text) 82%, var(--accent-coral));
}

.card--featured .card-media {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--text) 8%);
  box-shadow:
    var(--shadow),
    0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}

/* Blog cards — slightly tighter */
.grid-blog .card--split {
  gap: 0.65rem;
}

.grid-blog .card-title {
  font-size: 0.86rem;
  line-height: 1.38;
}

/* Contact */
.contact-bento {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: clamp(2rem, 5vw, 3rem);
  background: var(--card);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition:
    box-shadow 0.45s var(--ease-out),
    border-color 0.35s var(--ease-out);
}

.contact-bento:hover {
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--text) 10%, transparent);
}

.contact-note {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
  max-width: 36ch;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  transition:
    background 0.3s var(--ease-out),
    transform 0.35s var(--ease-out),
    border-color 0.3s var(--ease-out);
}

.contact-item:hover {
  background: var(--bg-muted);
  transform: translateX(4px);
  border-color: color-mix(in srgb, var(--text) 10%, transparent);
}

.contact-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  background: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: color 0.25s;
}

button.contact-value:hover,
a.contact-value:hover {
  color: var(--accent-coral);
}

a.contact-value {
  display: inline-block;
  text-decoration: none;
}

/* Footer */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.back-top {
  font-weight: 600;
  position: relative;
  transition: color 0.25s var(--ease-out);
}

.back-top::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease-out);
}

.back-top:hover {
  color: var(--text);
}

.back-top:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

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

.card--split[data-reveal] {
  transition-delay: calc(var(--i, 0) * 55ms);
}

.card--split[data-reveal].is-visible:hover .card-media {
  transform: translateY(-4px);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  padding: 0.75rem 1.25rem;
  background: var(--text);
  color: var(--card);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 10000;
  transition: transform 0.4s var(--ease-out);
  pointer-events: none;
}

.toast.is-show {
  transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 1200px) {
  .grid-works {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-blog {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 960px) {
  .nav,
  .btn-header {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

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

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

  .grid-blog {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 600px) {
  .grid-works,
  .grid-blog {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}