:root {
  --brand: #4f8a3a;
  --brand-deep: #3a6b2b;
  --ink: #1c2418;
  --muted: #5c6756;
  --line: #dce4d6;
  --paper: #f3f6f0;
  --card: #ffffff;
  --create: #2f7d4a;
  --idphoto: #2b6cb0;
  --image: #c05621;
  --office: #6b46c1;
  --tap: 2.75rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  overflow-x: clip;
  -webkit-tap-highlight-color: color-mix(in srgb, var(--brand) 18%, transparent);
}

img,
svg {
  max-width: 100%;
  height: auto;
}

.site-top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--brand-deep) 88%, #000);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: env(safe-area-inset-top);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.site-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 4.25rem;
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  text-decoration: none;
  min-width: 0;
}

.brand-lockup:hover,
.brand-lockup:focus-visible {
  color: #fff;
}

.brand-logo {
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand-tagline {
  font-size: 0.75rem;
  opacity: 0.78;
  white-space: nowrap;
}

.contact-bar {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap);
  height: var(--tap);
  padding: 0;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.contact-btn:hover,
.contact-btn:focus-visible,
.contact-btn[aria-describedby] {
  background: #fff;
  color: var(--brand-deep);
  border-color: #fff;
}

.popover-qr {
  width: min(10rem, 70vw);
  text-align: center;
}

.popover-qr img {
  width: 100%;
  height: auto;
  border-radius: 0.35rem;
}

.hero-band {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: center / cover no-repeat url("/assets/images/cover_bg_3.jpg");
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--brand) 88%, transparent), color-mix(in srgb, var(--brand-deep) 82%, #16380f));
}

.hero-band-inner {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  padding: 3.25rem 0 3rem;
}

.hero-kicker {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.82;
}

.hero-title {
  margin: 0 0 0.85rem;
  font-size: clamp(1.45rem, 4.6vw, 2.45rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.28;
  overflow-wrap: anywhere;
}

.hero-lead {
  margin: 0;
  font-size: clamp(0.92rem, 2.6vw, 1.02rem);
  line-height: 1.7;
  opacity: 0.92;
}

.page-main {
  padding: 2.4rem 0 3.2rem;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.tool-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  column-gap: 0.9rem;
  row-gap: 0.45rem;
  height: 100%;
  min-height: 100%;
  padding: 1.2rem 1.15rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 8px 24px rgba(28, 36, 24, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.tool-card:focus-visible {
  color: inherit;
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.tool-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  flex-shrink: 0;
  border-radius: 0.85rem;
  font-size: 1.25rem;
}

.tool-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.tool-card-name {
  font-size: 1.05rem;
  font-weight: 700;
}

.tool-card-desc {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.tool-card-go {
  display: inline-flex;
  align-items: center;
  align-self: center;
  gap: 0.28rem;
  min-height: var(--tap);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0.72;
}

.accent-a .tool-card-icon {
  color: var(--create);
  background: color-mix(in srgb, var(--create) 12%, #fff);
}

.accent-a .tool-card-go {
  color: var(--create);
}

.accent-b .tool-card-icon {
  color: var(--idphoto);
  background: color-mix(in srgb, var(--idphoto) 12%, #fff);
}

.accent-b .tool-card-go {
  color: var(--idphoto);
}

.accent-c .tool-card-icon {
  color: var(--image);
  background: color-mix(in srgb, var(--image) 12%, #fff);
}

.accent-c .tool-card-go {
  color: var(--image);
}

.accent-d .tool-card-icon {
  color: var(--office);
  background: color-mix(in srgb, var(--office) 12%, #fff);
}

.accent-d .tool-card-go {
  color: var(--office);
}

.site-foot {
  padding: 1.4rem 0 calc(1.7rem + env(safe-area-inset-bottom));
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
  text-align: center;
  border-top: 1px solid var(--line);
  background: #eef3ea;
}

.site-foot a {
  color: var(--brand-deep);
  text-decoration: none;
}

.site-foot a:hover,
.site-foot a:focus-visible {
  text-decoration: underline;
}

@media (hover: hover) and (pointer: fine) {
  .contact-btn:hover,
  .contact-btn:focus-visible,
  .contact-btn[aria-describedby] {
    transform: translateY(-1px);
  }

  .tool-card:hover,
  .tool-card:focus-visible {
    color: inherit;
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(28, 36, 24, 0.1);
  }

  .accent-a:hover,
  .accent-a:focus-visible {
    border-color: color-mix(in srgb, var(--create) 45%, var(--line));
  }

  .accent-b:hover,
  .accent-b:focus-visible {
    border-color: color-mix(in srgb, var(--idphoto) 45%, var(--line));
  }

  .accent-c:hover,
  .accent-c:focus-visible {
    border-color: color-mix(in srgb, var(--image) 45%, var(--line));
  }

  .accent-d:hover,
  .accent-d:focus-visible {
    border-color: color-mix(in srgb, var(--office) 45%, var(--line));
  }
}

@media (max-width: 767.98px) {
  .site-top-inner {
    min-height: 3.5rem;
    padding-top: 0.45rem;
    padding-bottom: 0.45rem;
    gap: 0.5rem;
  }

  .brand-lockup {
    gap: 0.5rem;
  }

  .brand-logo {
    width: 2rem;
    height: 2rem;
  }

  .brand-name {
    font-size: 1rem;
  }

  .brand-tagline {
    display: none;
  }

  .contact-bar {
    gap: 0.3rem;
  }

  .hero-band-inner {
    padding: 1.75rem 0 1.6rem;
  }

  .hero-kicker {
    letter-spacing: 0.14em;
  }

  .page-main {
    padding: 1.25rem 0 2rem;
  }

  .tool-card {
    padding: 0.95rem 0.9rem;
  }

  .tool-card-icon {
    width: 2.45rem;
    height: 2.45rem;
    font-size: 1.1rem;
  }

  .tool-card-name {
    font-size: 1rem;
  }

  .tool-card-desc {
    font-size: 0.82rem;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    overflow: hidden;
  }

  .tool-card-go-text {
    display: none;
  }

  .site-foot {
    padding: 1.15rem 0.75rem calc(1.35rem + env(safe-area-inset-bottom));
    font-size: 0.78rem;
  }
}

@media (max-width: 379.98px) {
  .brand-name {
    font-size: 0.92rem;
  }

  .contact-btn {
    width: 2.45rem;
    height: 2.45rem;
  }

  .tool-card-desc {
    -webkit-line-clamp: 2;
    line-clamp: 2;
  }
}

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

  .contact-btn,
  .tool-card {
    transition: none;
  }
}