/* Claude-inspired responsive landing theme */
:root {
  --claude-bg: #f7f2ea;
  --claude-bg-soft: #fbf7f0;
  --claude-surface: rgba(255, 250, 242, 0.84);
  --claude-surface-strong: rgba(255, 250, 242, 0.94);
  --claude-border: rgba(86, 66, 48, 0.16);
  --claude-border-strong: rgba(86, 66, 48, 0.24);
  --claude-text: #2f2a24;
  --claude-muted: #7b6f63;
  --claude-accent: #c15f3c;
  --claude-accent-dark: #9e482e;
  --claude-green: #667d5f;
  --claude-shadow: 0 24px 80px rgba(76, 55, 38, 0.16);
  --claude-shadow-soft: 0 14px 45px rgba(76, 55, 38, 0.10);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  width: 100%;
  min-width: 0;
  background: var(--claude-bg) !important;
  color: var(--claude-text) !important;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", "Microsoft YaHei", serif !important;
  overflow-x: hidden;
}

a { color: var(--claude-accent-dark) !important; }
a:hover, a:active, a:focus { color: var(--claude-accent) !important; }

#header {
  height: auto !important;
  padding: 16px 0 !important;
  background: rgba(255, 250, 242, 0.74) !important;
  border-bottom: 1px solid var(--claude-border);
  box-shadow: 0 10px 34px rgba(76, 55, 38, 0.08);
  backdrop-filter: blur(20px);
}

#header .container {
  width: min(1180px, calc(100% - 32px));
  max-width: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: 0;
  padding-right: 0;
}

#header.header-fixed {
  height: auto !important;
  padding: 10px 0 !important;
  background: rgba(255, 250, 242, 0.90) !important;
}

#header #logo { float: none !important; }
#header #logo h2 { margin: 0; line-height: 1; }

#logo h2 a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
}

#logo h2 a::before {
  content: "云鉴网络验证";
  color: var(--claude-text);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
}

#nav-menu-container { float: none !important; margin: 0 !important; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu > li { margin-left: 0 !important; }

.nav-menu a {
  color: var(--claude-muted) !important;
  text-transform: none !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  padding: 10px 14px !important;
  border-radius: 999px;
  line-height: 1.2;
}

.nav-menu > li > a:before { display: none !important; }

.nav-menu a:hover,
.nav-menu li:hover > a,
.nav-menu .menu-active > a {
  color: var(--claude-accent-dark) !important;
  background: rgba(193, 95, 60, 0.10);
}

#mobile-nav-toggle {
  top: 7px !important;
  right: 10px !important;
  width: 42px;
  height: 42px;
  margin: 0 !important;
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.86) !important;
  border: 1px solid var(--claude-border) !important;
  box-shadow: var(--claude-shadow-soft);
}

#mobile-nav-toggle i { color: var(--claude-text) !important; }
#mobile-nav {
  background: rgba(255, 250, 242, 0.97) !important;
  border-right: 1px solid var(--claude-border);
  box-shadow: 20px 0 60px rgba(76, 55, 38, 0.16);
}
#mobile-nav ul li a,
#mobile-nav ul .menu-has-children i { color: var(--claude-text) !important; }
#mobile-nav ul li a:hover { background: rgba(193, 95, 60, 0.10); }
#mobile-body-overly { background: rgba(47, 42, 36, 0.28) !important; }

#hero {
  position: relative;
  display: block !important;
  width: 100%;
  min-height: 100svh;
  background:
    radial-gradient(circle at 18% 18%, rgba(193, 95, 60, 0.18), transparent 28%),
    radial-gradient(circle at 84% 20%, rgba(95, 127, 98, 0.12), transparent 30%),
    radial-gradient(circle at 50% 92%, rgba(47, 42, 36, 0.08), transparent 36%),
    linear-gradient(135deg, #f8f2ea 0%, #eadfce 100%) !important;
  overflow: hidden;
  padding: 96px 24px 28px;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 88px 32px 128px;
  border: 1px solid rgba(86, 66, 48, 0.12);
  border-radius: 40px;
  background:
    linear-gradient(115deg, rgba(255, 250, 242, 0.88), rgba(255, 250, 242, 0.66)),
    var(--hero-image, none);
  background-size: cover;
  background-position: center;
  box-shadow: var(--claude-shadow);
  pointer-events: none;
  animation: heroCardFloat 9s ease-in-out infinite;
}

#hero::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -160px;
  top: 16%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(193, 95, 60, 0.13), transparent 62%);
  filter: blur(2px);
  pointer-events: none;
  animation: ambientDrift 12s ease-in-out infinite alternate;
}

#hero .hero-container {
  position: relative;
  z-index: 1;
  display: grid !important;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .78fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  width: min(1120px, 100%);
  min-height: calc(100svh - 240px);
  margin: 0 auto;
  padding: 40px 0 20px !important;
  background: transparent !important;
  text-align: left !important;
}

.hero-copy {
  max-width: 720px;
  min-width: 0;
  animation: fadeUp .8s ease both;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  margin-bottom: 20px;
  padding: 8px 13px;
  border-radius: 999px;
  border: 1px solid var(--claude-border);
  background: rgba(255, 250, 242, 0.76);
  color: var(--claude-accent-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: normal;
  box-shadow: 0 10px 28px rgba(76, 55, 38, 0.08);
}

.hero-kicker::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--claude-accent);
  box-shadow: 0 0 0 6px rgba(193, 95, 60, 0.12);
}

#hero h1 {
  color: var(--claude-text) !important;
  max-width: 760px;
  margin: 0 0 20px !important;
  font-size: clamp(48px, 7.4vw, 92px) !important;
  line-height: .98 !important;
  font-weight: 720 !important;
  letter-spacing: -0.065em;
  text-transform: none !important;
  overflow-wrap: anywhere;
}

#hero h2 {
  color: var(--claude-muted) !important;
  max-width: 610px;
  margin: 0 0 34px !important;
  font-size: clamp(18px, 2.2vw, 24px) !important;
  line-height: 1.65 !important;
  font-weight: 500;
}

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

#hero .btn-get-started {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  color: var(--claude-text) !important;
  background: rgba(255, 250, 242, 0.78);
  border: 1px solid var(--claude-border) !important;
  border-radius: 999px !important;
  padding: 12px 24px !important;
  margin: 0 !important;
  font-size: 15px !important;
  font-weight: 700 !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
  white-space: nowrap;
  box-shadow: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}

#hero .btn-get-started.primary-action,
#hero .btn-get-started:first-child {
  color: #fffaf2 !important;
  background: var(--claude-accent) !important;
  border-color: var(--claude-accent) !important;
  box-shadow: 0 14px 34px rgba(193, 95, 60, 0.24);
}

#hero .btn-get-started:hover {
  background: var(--claude-accent-dark) !important;
  border-color: var(--claude-accent-dark) !important;
  color: #fffaf2 !important;
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(193, 95, 60, 0.20);
}

.hero-preview {
  position: relative;
  width: 100%;
  min-width: 0;
  min-height: 390px;
  border: 1px solid var(--claude-border-strong);
  border-radius: 30px;
  background: rgba(255, 250, 242, 0.72);
  box-shadow: 0 22px 70px rgba(76, 55, 38, 0.14);
  overflow: hidden;
  backdrop-filter: blur(18px);
  animation: fadeUp .9s .12s ease both, previewFloat 7s ease-in-out infinite;
}

.hero-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 250, 242, 0.68), rgba(255, 250, 242, 0.28)),
    var(--hero-image, none);
  background-size: cover;
  background-position: center;
  opacity: .36;
}

.hero-preview::after {
  content: "";
  position: absolute;
  inset: auto 22px 22px;
  height: 130px;
  border-radius: 22px;
  background: rgba(255, 250, 242, 0.76);
  border: 1px solid var(--claude-border);
}

.preview-toolbar {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  padding: 18px;
}

.preview-toolbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(47, 42, 36, .24);
}

.preview-toolbar span:first-child { background: var(--claude-accent); }
.preview-toolbar span:nth-child(2) { background: #d8a15f; }
.preview-toolbar span:nth-child(3) { background: var(--claude-green); }

.preview-content {
  position: absolute;
  z-index: 2;
  left: 34px;
  right: 34px;
  bottom: 48px;
}

.preview-badge {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(193, 95, 60, .12);
  color: var(--claude-accent-dark);
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 16px;
}

.preview-line {
  width: 64%;
  height: 12px;
  border-radius: 999px;
  background: rgba(47, 42, 36, .16);
  margin-bottom: 10px;
}

.preview-line.line-long { width: 88%; height: 16px; }

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 18px;
}

.preview-grid div {
  min-height: 58px;
  border-radius: 16px;
  background: rgba(255, 250, 242, .78);
  border: 1px solid var(--claude-border);
}

.hero-feature-strip {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  width: min(1120px, 100%);
  margin: 8px auto 0;
  animation: fadeUp .9s .18s ease both;
}

.hero-feature-strip > div {
  min-width: 0;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid var(--claude-border);
  background: rgba(255, 250, 242, 0.72);
  box-shadow: 0 12px 34px rgba(76, 55, 38, 0.08);
  backdrop-filter: blur(14px);
}

.hero-feature-strip strong {
  display: block;
  color: var(--claude-text);
  font-size: 16px;
  margin-bottom: 6px;
}

.hero-feature-strip span {
  display: block;
  color: var(--claude-muted);
  font-size: 13px;
  line-height: 1.5;
}

.back-to-top {
  background: rgba(255, 250, 242, 0.90) !important;
  color: var(--claude-accent-dark) !important;
  border: 1px solid var(--claude-border);
  border-radius: 999px !important;
  box-shadow: 0 12px 30px rgba(76, 55, 38, 0.14);
}

.back-to-top:hover {
  background: var(--claude-accent) !important;
  color: #fffaf2 !important;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroCardFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.006); }
}

@keyframes previewFloat {
  0%, 100% { transform: translateY(0) rotate(.35deg); }
  50% { transform: translateY(-10px) rotate(-.35deg); }
}

@keyframes ambientDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-80px, 36px, 0) scale(1.08); }
}

@media (max-width: 1080px) {
  #hero .hero-container {
    grid-template-columns: minmax(0, 1fr) minmax(280px, .78fr);
    gap: 34px;
  }

  #hero h1 {
    font-size: clamp(44px, 7vw, 76px) !important;
  }
}

@media (max-width: 991px) {
  #header .container {
    width: min(100%, calc(100% - 28px));
  }

  #hero {
    min-height: auto;
    padding: 86px 18px 24px;
  }

  #hero::before {
    inset: 74px 14px 118px;
    border-radius: 30px;
  }

  #hero .hero-container {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    min-height: auto;
    padding: 30px 0 12px !important;
    text-align: center !important;
  }

  .hero-copy {
    max-width: 760px;
    margin: 0 auto;
  }

  #hero h1, #hero h2 {
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-preview {
    width: min(560px, 100%);
    min-height: 300px;
    margin: 0 auto;
  }

  .hero-feature-strip {
    grid-template-columns: minmax(0, 1fr);
    max-width: 560px;
  }
}

/* Full mobile adaptation: overrides legacy style.css that hides the nav at 768px */
@media (max-width: 768px) {
  body {
    -webkit-text-size-adjust: 100%;
  }

  #header {
    position: fixed !important;
    padding: 9px 0 !important;
  }

  #header .container {
    width: calc(100% - 24px);
    display: block;
    padding: 0;
  }

  #header #logo {
    width: 100%;
    text-align: center;
    margin-bottom: 8px;
  }

  #logo h2 a {
    justify-content: center;
  }

  #logo h2 a::before {
    font-size: 18px;
  }

  #nav-menu-container {
    display: block !important;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  #nav-menu-container::-webkit-scrollbar {
    display: none;
  }

  .nav-menu {
    display: flex !important;
    float: none !important;
    width: max-content;
    min-width: 100%;
    justify-content: flex-start;
    gap: 6px;
    padding: 0 1px 2px !important;
    white-space: nowrap;
  }

  .nav-menu > li {
    float: none !important;
    display: block;
  }

  .nav-menu a {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 8px 12px !important;
    font-size: 13px !important;
    background: rgba(255, 250, 242, .58);
    border: 1px solid rgba(86, 66, 48, .10);
  }

  #mobile-nav-toggle,
  #mobile-nav,
  #mobile-body-overly {
    display: none !important;
  }

  #hero {
    min-height: auto;
    padding: 124px 12px 18px;
    overflow: hidden;
  }

  #hero::before {
    inset: 108px 8px 84px;
    border-radius: 24px;
  }

  #hero::after {
    width: 300px;
    height: 300px;
    right: -160px;
    top: 12%;
  }

  #hero .hero-container {
    width: 100%;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding: 24px 0 8px !important;
    text-align: center !important;
  }

  .hero-copy {
    width: 100%;
    max-width: 100%;
    padding: 0 4px;
  }

  .hero-kicker {
    max-width: calc(100vw - 40px);
    margin-bottom: 14px;
    padding: 7px 10px;
    font-size: 11px;
    line-height: 1.35;
  }

  #hero h1 {
    width: 100%;
    max-width: 100%;
    margin-bottom: 14px !important;
    font-size: clamp(34px, 10.8vw, 50px) !important;
    line-height: 1.08 !important;
    letter-spacing: -0.045em;
  }

  #hero h2 {
    max-width: 100%;
    margin-bottom: 22px !important;
    padding: 0 2px;
    font-size: 15px !important;
    line-height: 1.7 !important;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    width: min(100%, 360px);
    margin: 0 auto;
  }

  #hero .btn-get-started {
    width: 100%;
    min-height: 48px;
    padding: 12px 16px !important;
    font-size: 15px !important;
  }

  .hero-preview {
    width: min(100%, 390px);
    min-height: 220px;
    margin: 2px auto 0;
    border-radius: 22px;
  }

  .preview-toolbar {
    padding: 14px;
  }

  .preview-content {
    left: 18px;
    right: 18px;
    bottom: 28px;
  }

  .preview-badge {
    margin-bottom: 10px;
    padding: 6px 10px;
    font-size: 11px;
  }

  .preview-line {
    height: 9px;
    margin-bottom: 8px;
  }

  .preview-line.line-long {
    height: 12px;
  }

  .preview-grid {
    gap: 7px;
    margin-top: 12px;
  }

  .preview-grid div {
    min-height: 36px;
    border-radius: 12px;
  }

  .hero-preview::after {
    inset: auto 12px 12px;
    height: 96px;
    border-radius: 16px;
  }

  .hero-feature-strip {
    width: 100%;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    margin-top: 10px;
  }

  .hero-feature-strip > div {
    padding: 14px 15px;
    border-radius: 18px;
    text-align: left;
  }

  .hero-feature-strip strong {
    font-size: 15px;
  }

  .hero-feature-strip span {
    font-size: 12px;
  }

  .back-to-top {
    right: 12px;
    bottom: 12px;
    padding: 7px 11px 8px !important;
  }
}

@media (max-width: 420px) {
  #header .container {
    width: calc(100% - 18px);
  }

  #hero {
    padding-left: 9px;
    padding-right: 9px;
  }

  .nav-menu a {
    padding: 8px 10px !important;
    font-size: 12px !important;
  }

  #hero h1 {
    font-size: clamp(31px, 10.6vw, 40px) !important;
  }

  #hero h2 {
    font-size: 14px !important;
  }

  .hero-preview {
    min-height: 200px;
  }

  .preview-grid div {
    min-height: 30px;
  }
}

@media (max-width: 360px) {
  #logo h2 a::before {
    font-size: 16px;
  }

  #hero {
    padding-top: 118px;
  }

  #hero h1 {
    font-size: 30px !important;
    letter-spacing: -0.035em;
  }

  .hero-kicker {
    font-size: 10px;
  }
}

@media (max-height: 680px) and (max-width: 768px) {
  #hero {
    padding-top: 116px;
  }

  .hero-preview {
    min-height: 176px;
  }

  .preview-grid div {
    min-height: 24px;
  }
}

/* Extra relaxed mobile spacing: prevents all modules from crowding together */
@media (max-width: 768px) {
  #header {
    position: sticky !important;
    top: 0;
    padding: 12px 0 14px !important;
  }

  #header.header-fixed {
    padding: 10px 0 12px !important;
  }

  #header #logo {
    margin-bottom: 8px;
  }

  #nav-menu-container {
    padding-bottom: 2px;
  }

  .nav-menu {
    justify-content: center;
  }

  .nav-menu li:nth-child(2),
  .nav-menu li:nth-child(4) {
    display: none;
  }

  .nav-menu {
    gap: 8px;
    padding: 0 2px 4px !important;
  }

  .nav-menu a {
    min-height: 38px;
    padding: 9px 14px !important;
  }

  #hero {
    padding: 24px 16px 30px;
  }

  #hero::before {
    inset: 14px 10px 88px;
    border-radius: 28px;
  }

  #hero .hero-container {
    gap: 22px;
    padding: 30px 0 14px !important;
  }

  .hero-copy {
    padding: 0 6px;
  }

  .hero-kicker {
    margin-bottom: 22px;
  }

  #hero h1 {
    margin-bottom: 18px !important;
  }

  #hero h2 {
    margin-bottom: 26px !important;
  }

  .hero-actions {
    gap: 12px;
    margin-bottom: 4px;
  }

  #hero .btn-get-started {
    min-height: 52px;
  }

  .hero-preview {
    display: none;
  }

  .hero-feature-strip {
    gap: 14px;
    margin-top: 18px;
    padding-bottom: 4px;
  }

  .hero-feature-strip > div {
    padding: 18px 18px;
  }

  .hero-feature-strip > div:nth-child(n+2) {
    display: none;
  }
}

@media (max-width: 420px) {
  #hero {
    padding: 24px 14px 32px;
  }

  #hero .hero-container {
    gap: 30px;
  }

  #hero h1 {
    margin-bottom: 22px !important;
  }

  #hero h2 {
    margin-bottom: 30px !important;
  }

  .hero-preview {
    min-height: 230px;
    margin-bottom: 16px;
  }
}

@media (max-height: 680px) and (max-width: 768px) {
  #hero {
    padding-top: 22px;
  }

  .hero-preview {
    min-height: 220px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}