:root {
  --bg: #eef2f6;
  --bg-deep: #dfe7ef;
  --ink: #0f1724;
  --ink-soft: #3d4a5c;
  --muted: #6b7a8d;
  --line: rgba(15, 23, 36, 0.12);
  --accent: #e85d04;
  --accent-hover: #c44d03;
  --surface: rgba(255, 255, 255, 0.55);
  --radius: 2px;
  --font-display: "Oxanium", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 85% -10%, rgba(232, 93, 4, 0.12), transparent 55%),
    radial-gradient(900px 600px at -10% 20%, rgba(61, 90, 128, 0.14), transparent 50%),
    linear-gradient(180deg, #f4f7fa 0%, var(--bg) 40%, var(--bg-deep) 100%);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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");
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: rgba(238, 242, 246, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(238, 242, 246, 0.9);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.logo span,
.brand span {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

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

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.nav-cta:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.menu-btn {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.menu-btn span {
  display: block;
  height: 2px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.menu-btn[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-btn[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 4vw, 3rem) 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(15, 23, 36, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 36, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.85));
}

.hero-glow {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 55% 70% at 22% 50%, rgba(232, 93, 4, 0.1), transparent 65%),
    linear-gradient(255deg, rgba(238, 242, 246, 0.92) 0%, rgba(238, 242, 246, 0.55) 42%, transparent 72%);
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 38rem;
  margin-left: -70px;
  margin-top: 180px;
  justify-self: start;
  transform: scale(0.9);
  transform-origin: left center;
  animation: riseInContent 0.9s var(--ease) both;
}

.hero-shot {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: riseIn 0.9s var(--ease) 0.12s both;
}

.hero-shot img {
  width: min(100%, 280px);
  height: auto;
  border: 1px solid var(--line);
  box-shadow:
    0 24px 48px rgba(15, 23, 36, 0.14),
    0 4px 12px rgba(15, 23, 36, 0.08);
  animation: heroFloat 6s var(--ease) infinite alternate;
}

@keyframes heroFloat {
  from { transform: translateY(0); }
  to { transform: translateY(-10px); }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes riseInContent {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(0.9);
  }
}

.brand {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--ink);
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  max-width: 16ch;
}

.hero-lead {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 32ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

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

.btn-ghost {
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  background: var(--ink);
  color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.65rem 1.05rem;
  font-size: 0.875rem;
}

/* Sections */
.section {
  padding: clamp(4rem, 10vw, 7rem) clamp(1.25rem, 4vw, 3rem);
}

.section-head {
  max-width: 36rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section-head h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

/* Tools */
.tool-list {
  display: grid;
  gap: clamp(3rem, 8vw, 5.5rem);
}

.tool-row {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.tool-row.reverse {
  direction: rtl;
}

.tool-row.reverse > * {
  direction: ltr;
}

.tool-media {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  line-height: 0;
}

.tool-media img {
  width: 100%;
  height: auto;
  max-height: min(52vh, 420px);
  object-fit: contain;
  object-position: center;
  transition: transform 0.7s var(--ease);
}

.tool-row:hover .tool-media img {
  transform: scale(1.02);
}

.tool-tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.tool-body h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
}

.tool-body > p {
  margin: 0 0 1.25rem;
  color: var(--ink-soft);
}

.tool-meta {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.tool-meta li {
  position: relative;
  font-size: 0.9rem;
  color: var(--muted);
  padding-left: 0.9rem;
}

.tool-meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.4rem;
  height: 0.4rem;
  background: var(--accent);
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* Videos */
.videos {
  background: linear-gradient(180deg, transparent, rgba(15, 23, 36, 0.04), transparent);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.video-item {
  text-align: left;
  display: grid;
  gap: 0.85rem;
  transition: transform 0.35s var(--ease);
}

.video-item:hover {
  transform: translateY(-4px);
}

.video-item.pulse {
  animation: pulseHint 1.1s var(--ease);
}

@keyframes pulseHint {
  0%,
  100% {
    outline: 0 solid transparent;
  }
  40% {
    outline: 3px solid rgba(232, 93, 4, 0.55);
    outline-offset: 6px;
  }
}

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--ink);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.88;
  transition: opacity 0.35s var(--ease), transform 0.7s var(--ease);
}

.video-item:hover .video-thumb img {
  opacity: 1;
  transform: scale(1.05);
}

.play-icon {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 8px 24px rgba(15, 23, 36, 0.25);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.play-icon::before {
  content: "";
  position: absolute;
  left: 52%;
  top: 50%;
  transform: translate(-40%, -50%);
  border-style: solid;
  border-width: 0.55rem 0 0.55rem 0.9rem;
  border-color: transparent transparent transparent #fff;
}

.video-item:hover .play-icon {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--accent-hover);
}

.video-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.video-title {
  font-weight: 600;
  font-size: 1rem;
}

.video-time {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--muted);
}

/* Gallery */
.gallery-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--bg-deep);
  text-align: left;
}

.gallery-item:nth-child(2),
.gallery-item:nth-child(4) {
  aspect-ratio: 3 / 5;
  align-self: end;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-item span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.5rem 0.85rem 0.85rem;
  background: linear-gradient(transparent, rgba(15, 23, 36, 0.75));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
}

/* About */
.about-panel {
  max-width: 42rem;
  padding: clamp(2rem, 5vw, 3rem);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  backdrop-filter: blur(8px);
}

.about-panel h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.about-panel p {
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.about-links a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.about-links a:hover {
  border-bottom-color: var(--accent);
}

/* Footer */
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem) 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.beian {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.8rem;
}

.beian a {
  color: var(--muted);
}

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

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.45rem;
  flex-shrink: 0;
}

.visitor-counter {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.visitor-label {
  font-weight: 600;
}

.visitor-count {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* Reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: rgba(15, 23, 36, 0.88);
  backdrop-filter: blur(6px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.75rem;
  line-height: 1;
  color: #fff;
  opacity: 0.8;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-inner {
  width: min(960px, 100%);
}

.lightbox-inner img,
.lightbox-inner video {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  background: #000;
}

.lightbox-video-wrap p {
  margin: 0.75rem 0 0;
  color: #fff;
  text-align: center;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .hero-shot {
    width: 100%;
    max-width: 480px;
    margin-inline: auto;
  }

  .hero-shot img {
    width: 100%;
  }

  .tool-row,
  .tool-row.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

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

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

  .gallery-item:nth-child(2),
  .gallery-item:nth-child(4) {
    aspect-ratio: 3 / 4;
  }
}

@media (max-width: 720px) {
  .nav,
  .nav-cta {
    display: none;
  }

  .menu-btn {
    display: flex;
  }

  .site-header.nav-open .nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 1rem;
    background: rgba(238, 242, 246, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .site-header.nav-open .nav a {
    padding: 0.85rem 1.25rem;
  }

  .site-header.nav-open .nav-cta {
    display: none;
  }

  .hero {
    align-items: center;
    padding-bottom: 3rem;
  }

  .hero-shot {
    max-width: 420px;
  }

  .hero-glow {
    background:
      radial-gradient(ellipse 80% 50% at 50% 18%, rgba(232, 93, 4, 0.1), transparent 60%),
      linear-gradient(180deg, rgba(238, 242, 246, 0.55) 0%, rgba(238, 242, 246, 0.9) 55%, var(--bg) 100%);
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-right {
    align-self: flex-end;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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