/* 省大仙官网 — 墨色山岚 × 玉绿灯火 */
:root {
  --ink: #14181f;
  --ink-deep: #0b0e13;
  --paper: #f2f5f7;
  --paper-soft: #e8eef1;
  --mist: #c5d2d8;
  --jade: #2f8f78;
  --jade-deep: #1f6b5a;
  --jade-bright: #3aab90;
  --lantern: #d4a84b;
  --text: #1c242c;
  --muted: #5f6f7a;
  --white: #ffffff;
  --focus: #2f8f78;
  --header-h: 4rem;
  --font-display: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --shell: min(1080px, calc(100% - 2.5rem));
}

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

html {
  scroll-behavior: smooth;
}

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

  .hero-content,
  .mist,
  .orb {
    animation: none !important;
  }
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--jade-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--jade);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.85rem;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  border-radius: 999px;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 55%, transparent);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--lantern) 70%, white), transparent 55%),
    linear-gradient(160deg, var(--jade-bright), var(--ink));
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--lantern) 40%, transparent);
}

.brand-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.2em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.4rem;
  justify-content: flex-end;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.78;
}

.nav a:hover {
  opacity: 1;
  color: var(--jade-deep);
}

/* Hero — brand first, full-bleed atmosphere */
.hero {
  position: relative;
  min-height: min(78vh, 620px);
  padding: 4rem 0 4.5rem;
  color: var(--white);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(165deg, #0a0d12 0%, #151b24 42%, #1a2e2a 100%);
}

.hero-backdrop::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 45% at 70% 25%, rgba(47, 143, 120, 0.28), transparent 60%),
    radial-gradient(ellipse 40% 35% at 18% 70%, rgba(212, 168, 75, 0.12), transparent 55%);
}

.mist {
  position: absolute;
  width: 140%;
  height: 55%;
  left: -20%;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
  pointer-events: none;
}

.mist-a {
  bottom: -18%;
  background: radial-gradient(ellipse at center, rgba(200, 220, 230, 0.55), transparent 70%);
  animation: drift 16s ease-in-out infinite alternate;
}

.mist-b {
  bottom: -8%;
  height: 40%;
  background: radial-gradient(ellipse at 40% 50%, rgba(47, 143, 120, 0.25), transparent 65%);
  animation: drift 22s ease-in-out infinite alternate-reverse;
}

.orb {
  position: absolute;
  top: 14%;
  right: 14%;
  width: min(18vw, 140px);
  height: min(18vw, 140px);
  border-radius: 50%;
  background:
    radial-gradient(circle at 40% 35%, #f0e0a8, var(--lantern) 42%, transparent 70%);
  opacity: 0.55;
  filter: blur(2px);
  animation: glow 5s ease-in-out infinite;
}

@keyframes drift {
  from {
    transform: translateX(-3%) translateY(0);
  }
  to {
    transform: translateX(4%) translateY(-2%);
  }
}

@keyframes glow {
  0%,
  100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 0.65;
    transform: scale(1.06);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 34em;
  animation: rise 1s ease-out both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-kicker {
  margin: 0 0 1.1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: color-mix(in srgb, var(--lantern) 75%, white);
  letter-spacing: 0.08em;
}

.hero-brand-name {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 12vw, 6.2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  background: linear-gradient(180deg, #ffffff 20%, color-mix(in srgb, var(--jade-bright) 55%, white) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 2.1rem;
  font-size: 1.12rem;
  line-height: 1.75;
  color: color-mix(in srgb, var(--white) 84%, var(--mist));
  max-width: 26em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.55rem 1.45rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--jade);
  color: var(--white);
  border: 1px solid var(--jade);
}

.btn-primary:hover {
  background: var(--jade-bright);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid color-mix(in srgb, var(--white) 40%, transparent);
}

.btn-ghost:hover {
  border-color: var(--white);
  background: color-mix(in srgb, var(--white) 8%, transparent);
  color: var(--white);
}

/* Sections */
.section {
  padding: 4.75rem 0;
}

.section-alt {
  background: var(--paper-soft);
}

.section h2 {
  margin: 0 0 1.2rem;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.2vw, 2.15rem);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.08em;
}

.section-intro,
.lede {
  margin: 0 0 1.2rem;
  color: var(--muted);
  max-width: 38em;
}

.section p {
  margin: 0 0 1rem;
  max-width: 40em;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr minmax(14rem, 0.7fr);
  gap: 2.5rem 3rem;
  align-items: start;
}

.about-aside {
  padding: 1.5rem 1.4rem 1.55rem;
  border-left: 3px solid var(--jade);
  background: linear-gradient(135deg, color-mix(in srgb, var(--jade) 8%, var(--white)), var(--white));
}

.aside-label {
  margin: 0 0 0.45rem !important;
  font-size: 0.85rem;
  color: var(--muted);
}

.aside-name {
  margin: 0 0 0.35rem !important;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.04em;
  max-width: none !important;
}

.aside-meta {
  margin: 0 !important;
  font-size: 0.92rem;
  color: var(--jade-deep);
}

.service-list {
  list-style: none;
  margin: 2.1rem 0 0;
  padding: 0;
  border-top: 1px solid var(--mist);
}

.service-list li {
  display: grid;
  grid-template-columns: minmax(8rem, 11.5rem) 1fr;
  gap: 0.85rem 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--mist);
  align-items: baseline;
  transition: padding-left 0.2s ease;
}

.service-list li:hover {
  padding-left: 0.35rem;
}

.service-list h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.06em;
}

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

.section-contact {
  padding-bottom: 5rem;
}

.contact-panel {
  padding: 2.4rem 0 0;
  border-top: 1px solid var(--mist);
}

.contact-lead {
  font-size: 1.08rem;
  max-width: 28em;
}

.contact-note {
  margin-top: 1.6rem !important;
  padding-top: 1.3rem;
  border-top: 1px solid var(--mist);
  color: var(--muted);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  padding: 2.6rem 0 2.9rem;
  background: var(--ink-deep);
  color: color-mix(in srgb, var(--white) 76%, var(--mist));
}

.footer-brand {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--white);
  letter-spacing: 0.22em;
}

.footer-name {
  margin: 0 0 0.85rem;
  font-size: 0.98rem;
  color: color-mix(in srgb, var(--white) 88%, var(--jade-bright));
}

.footer-meta {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
}

.footer-meta a {
  color: color-mix(in srgb, var(--white) 90%, var(--lantern));
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.footer-meta a:hover {
  color: var(--lantern);
}

.footer-copy {
  margin: 0;
  font-size: 0.85rem;
  color: color-mix(in srgb, var(--white) 48%, var(--mist));
}

@media (max-width: 760px) {
  :root {
    --shell: calc(100% - 1.75rem);
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 0.55rem 0;
  }

  .site-header {
    height: auto;
    min-height: var(--header-h);
  }

  .nav {
    width: 100%;
    gap: 0.35rem 1.1rem;
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
    padding: 3rem 0 3.5rem;
  }

  .hero-brand-name {
    letter-spacing: 0.18em;
    text-indent: 0.18em;
  }

  .orb {
    top: 8%;
    right: 6%;
    opacity: 0.35;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .service-list li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .service-list li:hover {
    padding-left: 0;
  }
}