:root {
  color-scheme: dark;
  accent-color: #3DF08D;
  --bg: #050A18;
  --bg-soft: #070E20;
  --panel: #0A142C;
  --panel-2: #0C1731;
  --ink: #F1F5FD;
  --ink-2: #B7C2DD;
  --ink-3: #7E8DB1;
  --line: rgba(141, 166, 226, .14);
  --line-2: rgba(141, 166, 226, .26);
  --acc: #3DF08D;
  --acc-ink: #06210F;
  --acc-dim: rgba(61, 240, 141, .10);
  --acc-dim-2: rgba(61, 240, 141, .16);
  --acc-line: rgba(61, 240, 141, .38);
  --glow: rgba(61, 240, 141, .22);
  --err: #FF8D9B;
  --ease: cubic-bezier(.22, .8, .28, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.modal-open { overflow: hidden; }

::selection { background: rgba(61, 240, 141, .25); }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 100;
  background: var(--acc);
  color: var(--acc-ink);
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: top .2s var(--ease);
}

.skip-link:focus { top: 14px; }

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

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 11px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: transform .2s var(--ease), box-shadow .25s ease, background .2s ease, border-color .2s ease, color .2s ease;
}

.btn:active { transform: translateY(1px) scale(.99); }

.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lg { padding: 14px 26px; font-size: 15.5px; border-radius: 12px; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--acc);
  color: var(--acc-ink);
  box-shadow: 0 10px 30px -10px rgba(61, 240, 141, .5);
}

.btn-primary:hover {
  background: #4DF69A;
  transform: translateY(-1px);
  box-shadow: 0 14px 36px -10px rgba(61, 240, 141, .65), 0 0 24px rgba(61, 240, 141, .22);
}

.btn-ghost {
  border-color: var(--line-2);
  color: var(--ink);
  background: rgba(255, 255, 255, .02);
}

.btn-ghost:hover {
  border-color: var(--acc-line);
  color: var(--acc);
  background: var(--acc-dim);
}

/* ---------- header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
}

.site-header.scrolled {
  background: rgba(5, 10, 24, .82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 650;
  font-size: 17px;
  letter-spacing: .01em;
}

.brand svg {
  color: var(--acc);
  display: block;
  filter: drop-shadow(0 0 7px rgba(61, 240, 141, .5));
}

.nav-desktop { display: flex; gap: 4px; }

.nav-desktop a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14.5px;
  padding: 8px 13px;
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}

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

.nav-desktop a.active {
  color: var(--acc);
  background: var(--acc-dim);
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color .2s ease;
}

.nav-toggle:hover { border-color: var(--acc-line); }

.nav-toggle .bar {
  display: block;
  width: 16px;
  height: 1.8px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .25s var(--ease);
}

.nav-toggle[aria-expanded="true"] .bar:first-child { transform: translateY(3.4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:last-child { transform: translateY(-3.4px) rotate(-45deg); }

.mobile-menu {
  display: none;
  grid-template-rows: 0fr;
  background: rgba(5, 10, 24, .97);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  visibility: hidden;
  transition: grid-template-rows .35s var(--ease), visibility .35s, border-color .35s;
}

.mobile-menu.open {
  grid-template-rows: 1fr;
  border-bottom-color: var(--line);
  visibility: visible;
}

.mobile-menu-in { overflow: hidden; }

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding-top: 6px;
  padding-bottom: 24px;
}

.mobile-menu a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 16px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line);
  transition: color .2s ease;
}

.mobile-menu a:hover { color: var(--acc); }

.mobile-menu .btn { margin-top: 20px; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: 168px 0 96px;
  overflow: hidden;
  scroll-margin-top: 84px;
}

.hero-glow {
  position: absolute;
  inset: -15% -10% auto;
  height: 660px;
  background: radial-gradient(52% 46% at 50% 34%, rgba(61, 240, 141, .15), rgba(61, 240, 141, .05) 46%, transparent 72%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 7px 15px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(10, 20, 44, .6);
  color: var(--ink-2);
  font-size: 13px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--acc);
  box-shadow: 0 0 10px rgba(61, 240, 141, .85);
}

.hero h1 {
  margin: 28px auto 0;
  max-width: 21ch;
  font-size: clamp(2.5rem, 6.4vw, 4.5rem);
  font-weight: 650;
  line-height: 1.14;
  letter-spacing: -.015em;
}

.hl {
  color: var(--acc);
  text-shadow: 0 0 34px rgba(61, 240, 141, .35);
}

.hero-sub {
  margin: 24px auto 0;
  max-width: 640px;
  color: var(--ink-2);
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.hero-note {
  margin: 24px 0 0;
  color: var(--ink-3);
  font-size: 13.5px;
}

/* ---------- sections ---------- */

.section {
  padding: 104px 0;
  scroll-margin-top: 84px;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-label {
  display: inline-block;
  margin: 0 0 16px;
  padding: 6px 13px;
  border: 1px solid var(--acc-line);
  border-radius: 999px;
  background: var(--acc-dim);
  color: var(--acc);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.section-sub {
  margin: 16px 0 0;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- app preview ---------- */

.app-frame {
  border: 1px solid var(--line-2);
  border-radius: 20px;
  background: #081128;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(61, 240, 141, .05), 0 0 90px -30px var(--glow), 0 40px 90px -40px rgba(0, 0, 0, .8);
}

.app-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .015);
}

.app-chrome .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #22304F;
}

.app-url {
  margin-left: 12px;
  padding: 5px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0B1530;
  color: var(--ink-3);
  font-size: 12.5px;
}

.app-live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--acc);
  font-size: 12px;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--acc);
  box-shadow: 0 0 8px rgba(61, 240, 141, .9);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.app-body {
  display: grid;
  grid-template-columns: 216px 1fr;
  min-height: 460px;
}

.app-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 18px 14px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, .008);
}

.app-side-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 6px;
}

.ws-avatar {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--acc-line);
  background: var(--acc-dim-2);
  color: var(--acc);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 600;
}

.ws-name { margin: 0; font-size: 13.5px; font-weight: 600; }
.ws-plan { margin: 2px 0 0; font-size: 11.5px; color: var(--ink-3); }

.side-nav,
.side-projects {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.side-item {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 13.5px;
}

.side-item.active {
  background: var(--acc-dim-2);
  color: var(--acc);
  font-weight: 600;
}

.side-label {
  margin: 0 0 6px;
  padding: 0 12px;
  color: var(--ink-3);
  font-size: 11px;
  letter-spacing: .06em;
}

.side-project {
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--ink-3);
  font-size: 13px;
}

.side-project.active {
  background: rgba(255, 255, 255, .04);
  color: var(--ink);
}

.app-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  padding: 22px 24px 26px;
}

.app-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.app-head h3 { margin: 0; font-size: 17px; font-weight: 650; }
.app-head p { margin: 4px 0 0; color: var(--ink-3); font-size: 12.5px; }

.app-head-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  font-size: 11px;
  font-weight: 600;
}

.av-a { background: rgba(61, 240, 141, .16); color: #7DF0B4; border: 1px solid rgba(61, 240, 141, .3); }
.av-b { background: rgba(96, 140, 255, .16); color: #9FB8FF; border: 1px solid rgba(96, 140, 255, .3); }
.av-c { background: rgba(180, 140, 255, .14); color: #C9B2FF; border: 1px solid rgba(180, 140, 255, .3); }

.av-more {
  background: #152342;
  color: var(--ink-3);
  border: 1px solid var(--line-2);
  font-size: 10px;
}

.avatar-stack { display: flex; }

.avatar-stack .avatar {
  margin-left: -7px;
  box-shadow: 0 0 0 2px #081128;
}

.avatar-stack .avatar:first-child { margin-left: 0; }

.app-new {
  padding: 7px 12px;
  border: 1px solid var(--acc-line);
  border-radius: 9px;
  background: var(--acc-dim);
  color: var(--acc);
  font-size: 12.5px;
  font-weight: 600;
}

.app-progress {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-2);
}

.app-progress-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.app-progress-top span { color: var(--ink-2); font-size: 13px; }

.app-progress-top strong {
  color: var(--acc);
  font-size: 26px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.bar {
  height: 8px;
  margin-top: 12px;
  border-radius: 999px;
  background: #0F1D3C;
  overflow: hidden;
}

.bar i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--acc);
  box-shadow: 0 0 12px rgba(61, 240, 141, .6);
}

.app-progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  color: var(--ink-3);
  font-size: 12px;
}

.app-ai {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid rgba(61, 240, 141, .22);
  border-radius: 12px;
  background: var(--acc-dim);
  color: var(--ink-2);
  font-size: 13px;
}

.ai-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acc);
  box-shadow: 0 0 8px rgba(61, 240, 141, .9);
}

.app-tasks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.task {
  display: grid;
  grid-template-columns: 22px 1fr auto 28px;
  align-items: center;
  gap: 14px;
  padding: 13px 6px;
  border-bottom: 1px solid var(--line);
  border-radius: 8px;
  transition: background .2s ease;
}

.task:last-child { border-bottom: 0; }
.task:hover { background: rgba(255, 255, 255, .02); }

.tick {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.tick-done {
  background: var(--acc);
  color: var(--acc-ink);
  box-shadow: 0 0 10px rgba(61, 240, 141, .4);
}

.tick-doing {
  position: relative;
  border: 1.5px solid var(--acc-line);
}

.tick-doing::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--acc);
}

.tick-todo { border: 1.5px solid var(--line-2); }

.task-main { min-width: 0; }

.task-title { margin: 0; color: var(--ink); font-size: 14px; font-weight: 550; }
.task-sub { margin: 3px 0 0; color: var(--ink-3); font-size: 12px; }

.status {
  padding: 4px 10px;
  border: 1px solid;
  border-radius: 999px;
  font-size: 11.5px;
  white-space: nowrap;
}

.st-done { color: #79E4AE; border-color: rgba(61, 240, 141, .28); background: rgba(61, 240, 141, .08); }
.st-doing { color: var(--acc); border-color: var(--acc-line); background: var(--acc-dim-2); }
.st-todo { color: #93A6CE; border-color: var(--line-2); background: rgba(255, 255, 255, .03); }

.task .avatar {
  width: 26px;
  height: 26px;
  font-size: 11px;
}

/* ---------- features ---------- */

.features,
.pricing {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  transition: border-color .25s ease, transform .3s var(--ease), box-shadow .3s ease;
}

.feature-card:hover {
  border-color: var(--acc-line);
  transform: translateY(-3px);
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, .9), 0 0 40px -18px var(--glow);
}

.f-num {
  display: block;
  margin: 0;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--acc);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
}

.feature-card h3 { margin: 20px 0 0; font-size: 19px; font-weight: 650; }

.feature-card > p {
  margin: 12px 0 0;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.75;
}

.f-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.f-list li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-3);
  font-size: 13.5px;
}

.f-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 2px;
  border-radius: 1px;
  background: var(--acc);
}

/* ---------- testimonials ---------- */

.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testi-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  margin: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  transition: border-color .25s ease, transform .3s var(--ease), box-shadow .3s ease;
}

.testi-card:hover {
  border-color: var(--line-2);
  transform: translateY(-3px);
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, .9);
}

.testi-card blockquote { margin: 0; }

.testi-card blockquote p {
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.85;
}

.testi-person {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.testi-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: #152342;
  color: var(--ink-2);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 600;
}

.testi-name { margin: 0; font-size: 14px; font-weight: 600; }
.testi-role { margin: 2px 0 0; color: var(--ink-3); font-size: 12.5px; }

/* ---------- pricing ---------- */

.billing-toggle {
  display: flex;
  width: max-content;
  gap: 4px;
  margin: 0 auto 44px;
  padding: 4px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--panel);
}

.bt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-3);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 20px;
  cursor: pointer;
  transition: color .2s ease, background .25s ease;
}

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

.bt[aria-pressed="true"] {
  background: var(--acc-dim-2);
  color: var(--acc);
}

.save {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--acc);
  color: var(--acc-ink);
  font-size: 11px;
  font-weight: 650;
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}

.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  transition: border-color .25s ease, transform .3s var(--ease), box-shadow .3s ease;
}

.plan:hover {
  border-color: var(--line-2);
  transform: translateY(-3px);
}

.plan.featured {
  border-color: var(--acc-line);
  background: #0B162E;
  box-shadow: 0 0 60px -24px var(--glow), 0 30px 70px -50px rgba(0, 0, 0, .9);
}

.plan-tag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--acc);
  color: var(--acc-ink);
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
  box-shadow: 0 6px 20px -6px rgba(61, 240, 141, .6);
}

.plan-name { margin: 0; font-size: 17px; font-weight: 650; }
.plan-desc { margin: 8px 0 0; color: var(--ink-3); font-size: 13.5px; }

.price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 24px 0 0;
  min-height: 44px;
}

.price-value {
  font-size: 42px;
  font-weight: 650;
  letter-spacing: -.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.price-value.swap { animation: priceIn .35s var(--ease); }

@keyframes priceIn {
  from { opacity: 0; transform: translateY(8px); }
}

.price-unit { color: var(--ink-3); font-size: 13.5px; }
.price-note { margin: 10px 0 0; min-height: 19px; color: var(--ink-3); font-size: 12.5px; }

.plan-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin: 24px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.plan-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--ink-2);
  font-size: 14px;
}

.plan-list svg {
  flex: none;
  margin-top: 5px;
  color: var(--acc);
}

.plan .btn { margin-top: 26px; }

.pricing-foot {
  margin: 36px 0 0;
  text-align: center;
  color: var(--ink-3);
  font-size: 13px;
}

/* ---------- faq ---------- */

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  padding: 6px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}

.faq-item + .faq-item { border-top: 1px solid var(--line); }

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 22px 0;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color .2s ease;
}

.faq-q:hover { color: var(--acc); }

.faq-chev {
  flex: none;
  color: var(--ink-3);
  transition: transform .3s var(--ease), color .2s ease;
}

.faq-item.open .faq-chev {
  transform: rotate(180deg);
  color: var(--acc);
}

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s var(--ease);
}

.faq-item.open .faq-a { grid-template-rows: 1fr; }

.faq-a-in { overflow: hidden; }

.faq-a-in p {
  margin: 0;
  padding: 0 24px 24px 0;
  max-width: 92%;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.8;
}

/* ---------- footer ---------- */

.site-footer {
  padding: 64px 0 28px;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-brand p {
  margin: 16px 0 0;
  color: var(--ink-3);
  font-size: 14px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.footer-col h4 {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  color: var(--ink-3);
  text-decoration: none;
  font-size: 13.5px;
  transition: color .2s ease;
}

.footer-col a:hover { color: var(--acc); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  color: var(--ink-3);
  font-size: 12.5px;
}

.footer-bottom p { margin: 0; }

.footer-legal { display: flex; gap: 20px; }

.footer-legal a {
  color: var(--ink-3);
  text-decoration: none;
  transition: color .2s ease;
}

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

/* ---------- demo dialog ---------- */

.demo-dialog {
  width: 100%;
  max-width: min(560px, calc(100vw - 32px));
  margin: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
}

.demo-dialog[open] { animation: dialogIn .32s var(--ease); }

@keyframes dialogIn {
  from { opacity: 0; transform: translateY(14px) scale(.98); }
}

.demo-dialog::backdrop {
  background: rgba(3, 7, 18, .72);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.demo-dialog[open]::backdrop { animation: fadeIn .3s ease; }

@keyframes fadeIn {
  from { opacity: 0; }
}

.demo-dialog.closing { animation: dialogOut .18s ease forwards; }
.demo-dialog.closing::backdrop { animation: fadeOut .18s ease forwards; }

@keyframes dialogOut {
  to { opacity: 0; transform: translateY(8px) scale(.985); }
}

@keyframes fadeOut {
  to { opacity: 0; }
}

.demo-panel {
  position: relative;
  max-height: 86vh;
  overflow: auto;
  padding: 34px 34px 30px;
  border: 1px solid var(--line-2);
  border-radius: 22px;
  background: #0A142C;
  box-shadow: 0 40px 120px -40px rgba(0, 0, 0, .9), 0 0 80px -30px var(--glow);
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--ink-3);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.dialog-close:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, .05);
  border-color: var(--line-2);
}

.demo-label {
  margin: 0;
  color: var(--acc);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
}

.demo-form-view h3 {
  margin: 12px 0 0;
  padding-right: 28px;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -.01em;
}

.demo-sub {
  margin: 10px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}

#demo-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.field label {
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 550;
}

.req { margin-left: 3px; color: var(--acc); font-style: normal; }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: #081124;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.field select {
  appearance: none;
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 6.5 8 10.5 12 6.5' fill='none' stroke='%237E8DB1' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 14px;
}

.field textarea { resize: vertical; min-height: 84px; }

.field input::placeholder,
.field textarea::placeholder { color: #5C6B8F; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--acc-line);
  box-shadow: 0 0 0 3px rgba(61, 240, 141, .14);
}

.field.invalid input,
.field.invalid select { border-color: rgba(255, 141, 155, .55); }

.field.invalid input:focus,
.field.invalid select:focus { box-shadow: 0 0 0 3px rgba(255, 141, 155, .12); }

.field-err { margin: 0; color: var(--err); font-size: 12.5px; }

.demo-submit { margin-top: 6px; }

.demo-submit[disabled] {
  cursor: default;
  transform: none;
  opacity: .75;
}

.demo-privacy {
  margin: 0;
  text-align: center;
  color: var(--ink-3);
  font-size: 12px;
}

.demo-success {
  padding: 8px 0 2px;
  text-align: center;
}

.success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto;
  border: 1px solid var(--acc-line);
  border-radius: 50%;
  background: var(--acc-dim-2);
  color: var(--acc);
  display: grid;
  place-items: center;
  box-shadow: 0 0 40px -8px var(--glow);
  animation: popIn .4s var(--ease);
}

@keyframes popIn {
  from { transform: scale(.7); opacity: 0; }
}

.demo-success h3 { margin: 18px 0 0; font-size: 21px; font-weight: 650; }

.success-sub {
  max-width: 380px;
  margin: 10px auto 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}

.success-recap {
  margin: 22px 0 0;
  padding: 6px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .015);
  text-align: left;
}

.success-recap > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  font-size: 13.5px;
}

.success-recap > div + div { border-top: 1px solid var(--line); }
.success-recap dt { margin: 0; color: var(--ink-3); }

.success-recap dd {
  margin: 0;
  color: var(--ink);
  font-weight: 550;
  text-align: right;
  word-break: break-all;
}

.demo-success .btn { margin-top: 22px; }

/* ---------- reveal ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}

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

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .feature-grid,
  .testi-grid { gap: 18px; }
  .feature-card { padding: 26px 22px; }
}

@media (max-width: 920px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: grid; }

  .app-body { grid-template-columns: 1fr; }
  .app-side { display: none; }

  .feature-grid,
  .testi-grid { grid-template-columns: 1fr; }

  .plans {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
  }

  .footer-top { grid-template-columns: 1fr; gap: 40px; }

  .section { padding: 76px 0; }
  .hero { padding: 132px 0 72px; }
  .section-head { margin-bottom: 44px; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }

  .field-row { grid-template-columns: 1fr; }

  .app-url { display: none; }
  .app-main { padding: 18px 16px 22px; gap: 14px; }
  .app-new { display: none; }

  .task {
    grid-template-columns: 20px 1fr auto;
    gap: 10px;
    padding: 12px 4px;
  }

  .task .avatar { display: none; }

  .faq-list { padding: 4px 20px; }
  .faq-q { font-size: 15px; }
  .faq-a-in p { padding-right: 8px; max-width: 100%; }

  .demo-panel { padding: 26px 20px 24px; }
  .dialog-close { top: 12px; right: 12px; }
  .demo-form-view h3 { font-size: 20px; }

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

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .bt { padding: 8px 14px; }
  .price-value { font-size: 38px; }
}

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

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ============================================================
   增量新增区（业务线页面 + 首页业务概览）
   原则：只新增选择器，全部复用 :root 设计变量与既有组件
   （.btn / .section-head / .feature-card / .f-list / .faq-list /
   .bar / .live-dot 等），不修改上方任何既有规则。
   ============================================================ */

/* ---------- 通用：仅供读屏的文本 ---------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 通用：交替底色区块（对齐 .features / .pricing 的视觉节奏） ---------- */

.band {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- 首页：业务概览 ---------- */

.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.biz-card {
  display: flex;
  flex-direction: column;
  padding: 34px 32px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  transition: border-color .25s ease, transform .3s var(--ease), box-shadow .3s ease;
}

.biz-card:hover {
  border-color: var(--acc-line);
  transform: translateY(-3px);
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, .9), 0 0 40px -18px var(--glow);
}

.biz-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.biz-ico {
  flex: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--acc-line);
  border-radius: 13px;
  background: var(--acc-dim);
  color: var(--acc);
  display: grid;
  place-items: center;
}

.biz-card h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -.01em;
}

.biz-card > p {
  margin: 18px 0 0;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.75;
}

.biz-card .f-list { flex: 1; }

.biz-card .btn { margin-top: 26px; }

/* ---------- 业务线详情页：首屏与面包屑 ---------- */

.hero.subhero { padding: 148px 0 78px; }

.subhero h1 {
  max-width: 24ch;
  font-size: clamp(2.1rem, 4.8vw, 3.4rem);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  color: var(--ink-3);
  font-size: 13px;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--line-2);
}

.breadcrumb a {
  color: var(--ink-3);
  text-decoration: none;
  transition: color .2s ease;
}

.breadcrumb a:hover { color: var(--acc); }

.breadcrumb [aria-current="page"] { color: var(--ink-2); }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  padding: 6px 14px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(10, 20, 44, .6);
  color: var(--ink-2);
  font-size: 12.5px;
}

/* ---------- 免责声明（健康相关内容统一使用） ---------- */

.disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 780px;
  margin: 0 auto;
  padding: 16px 20px;
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--acc-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, .015);
  text-align: left;
}

.disclaimer svg {
  flex: none;
  margin-top: 3px;
  color: var(--acc);
}

.disclaimer p {
  margin: 0;
  color: var(--ink-3);
  font-size: 12.5px;
  line-height: 1.75;
}

.subhero .disclaimer { margin-top: 30px; }
.section > .container > .disclaimer { margin-top: 32px; }

/* ---------- 通用栅格（内容卡片内部复用 .feature-card） ---------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

/* ---------- 服务流程 ---------- */

.step {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}

.step-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.step-num {
  flex: none;
  width: 30px;
  height: 30px;
  border: 1px solid var(--acc-line);
  border-radius: 9px;
  background: var(--acc-dim);
  color: var(--acc);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.step h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
}

.step > p {
  margin: 14px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 技术架构（分层结构） ---------- */

.arch {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.arch-layer {
  display: grid;
  grid-template-columns: 176px 1fr;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  transition: border-color .25s ease;
}

.arch-layer:hover { border-color: var(--acc-line); }

.arch-name {
  color: var(--acc);
  font-size: 13.5px;
  font-weight: 650;
  letter-spacing: .04em;
}

.arch-desc {
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.7;
}

.arch-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 10px;
}

.arch-tags span {
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--ink-3);
  font-size: 12px;
}

/* ---------- 数据看板 ---------- */

.board {
  padding: 26px;
  border: 1px solid var(--line-2);
  border-radius: 18px;
  background: var(--panel-2);
  box-shadow: 0 30px 70px -50px rgba(0, 0, 0, .9);
}

.board-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.board-head h3 { margin: 0; font-size: 17px; font-weight: 650; }
.board-head p { margin: 5px 0 0; color: var(--ink-3); font-size: 12.5px; }

.board-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--acc);
  font-size: 12px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 22px 0 0;
}

.metric {
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, .015);
}

.metric-label { margin: 0; color: var(--ink-3); font-size: 12px; }

.metric-value {
  margin: 7px 0 0;
  color: var(--ink);
  font-size: 22px;
  font-weight: 650;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.metric-value span {
  margin-left: 3px;
  color: var(--ink-3);
  font-size: 12.5px;
  font-weight: 500;
}

.metric .bar { height: 6px; margin-top: 11px; }

.board-note {
  margin: 18px 0 0;
  color: var(--ink-3);
  font-size: 12px;
}

/* 看板下方的卡片栅格，沿用同一套 22px 间距节奏 */
.board + .grid-3 { margin-top: 22px; }

/* 同一 section 内的第二组小节标题（例如「服务流程」+「技术架构」） */
.section-head.head-gap { margin-top: 72px; }

/* ---------- 对比表（GEO 与 SEO） ---------- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  -webkit-overflow-scrolling: touch;
}

.compare {
  width: 100%;
  min-width: 640px;
  border-collapse: separate;
  border-spacing: 0;
}

.compare th,
.compare td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.compare thead th {
  color: var(--ink);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .02em;
}

.compare tbody th {
  width: 20%;
  color: var(--ink-3);
  font-size: 13px;
  font-weight: 600;
}

.compare td {
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}

.compare tbody tr:last-child th,
.compare tbody tr:last-child td { border-bottom: 0; }

.compare .col-geo {
  background: var(--acc-dim);
  color: var(--ink);
}

/* ---------- 适用场景 ---------- */

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

.scene {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  transition: border-color .25s ease, transform .3s var(--ease);
}

.scene:hover {
  border-color: var(--acc-line);
  transform: translateY(-2px);
}

.scene-ico {
  flex: none;
  width: 38px;
  height: 38px;
  border: 1px solid var(--acc-line);
  border-radius: 11px;
  background: var(--acc-dim);
  color: var(--acc);
  display: grid;
  place-items: center;
}

.scene h3 { margin: 0; font-size: 15px; font-weight: 650; }

.scene p {
  margin: 7px 0 0;
  color: var(--ink-3);
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---------- 占位标记（需人工补充的内容） ---------- */

.ph {
  display: inline-block;
  padding: 2px 9px;
  border: 1px dashed var(--line-2);
  border-radius: 7px;
  background: rgba(255, 255, 255, .02);
  color: var(--ink-3);
  font-size: 12.5px;
}

/* ---------- 转化入口 ---------- */

.cta-band {
  position: relative;
  overflow: hidden;
  padding: 56px 48px;
  border: 1px solid var(--line-2);
  border-radius: 22px;
  background: #0B162E;
  box-shadow: 0 0 80px -34px var(--glow), 0 30px 70px -50px rgba(0, 0, 0, .9);
  text-align: center;
}

.cta-band h2 {
  margin: 0 auto;
  max-width: 26ch;
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.cta-band > p {
  margin: 16px auto 0;
  max-width: 640px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.75;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
}

.cta-band .disclaimer {
  margin-top: 24px;
  background: rgba(255, 255, 255, .02);
}

/* ---------- 新增部分的响应式 ---------- */

@media (max-width: 1024px) {
  .grid-3,
  .scene-grid { gap: 18px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 920px) {
  .biz-grid,
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }

  .hero.subhero { padding: 118px 0 64px; }

  .arch-layer {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .cta-band { padding: 44px 30px; }
}

@media (max-width: 640px) {
  .biz-card { padding: 26px 22px; }
  .scene-grid { grid-template-columns: 1fr; }
  .board { padding: 20px 18px; }
  .cta-band { padding: 36px 20px; }
  .disclaimer { padding: 14px 16px; }
}

@media (max-width: 560px) {
  .metrics { grid-template-columns: 1fr; }
}

/* 对比表在窄屏改为纵向卡片，避免横向滚动 */
@media (max-width: 640px) {
  .table-wrap {
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .compare { min-width: 0; }

  /* 表头改为视觉隐藏（而非 display:none），保留列标题的读屏语义 */
  .compare thead {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }

  .compare tbody,
  .compare tr,
  .compare th,
  .compare td { display: block; width: auto; }

  .compare tbody tr {
    margin-bottom: 14px;
    padding: 18px 20px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel);
  }

  .compare tbody th {
    width: auto;
    padding: 0 0 12px;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    font-size: 14px;
    font-weight: 650;
  }

  .compare tbody td {
    padding: 12px 0 0;
    border-bottom: 0;
    font-size: 13.5px;
  }

  .compare tbody td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 5px;
    color: var(--ink-3);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .02em;
  }

  .compare .col-geo {
    margin-top: 12px;
    padding-left: 12px;
    border-left: 2px solid var(--acc-line);
    background: transparent;
  }

  .compare .col-geo::before { color: var(--acc); }
}

/* ---------- 业务线详情页：页脚栏目标题 ----------
   新页面页脚使用 h3 以满足标题层级（首页页脚沿用既有的 h4）。
   以下声明与既有 .footer-col h4 完全等价，仅为标签层级差异服务。 */

.footer-col h3 {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}

/* ---------- 业务线详情页：页内二级导航（锚点） ---------- */

.section-nav {
  position: sticky;
  top: 68px;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 10, 24, .86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.section-nav ul {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.section-nav ul::-webkit-scrollbar { display: none; }

.section-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease;
}

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

.section-nav a.active {
  color: var(--acc);
  background: var(--acc-dim);
}

/* 页内锚点跳转时，为吸顶的二级导航预留高度 */
.section-nav ~ .section { scroll-margin-top: 132px; }

/* ============================================================
   视觉优化（第八轮）
   原则：复用既有设计变量与站点内已存在的硬编码色值，不引入新色板；
   仅通过对比度修正与少量层次 / 光晕增强，提升可读性与精致度。
   ============================================================ */

/* 1) 对比度修正：将两类弱化文案从 ink-3 提亮到 ink-2，保证 AA 可读性 */
.hero-note { color: var(--ink-2); }
.disclaimer p { color: var(--ink-2); }

/* 2) Hero 光晕：在绿色主光晕基础上，叠加已用于头像的低饱和冷色光，增加纵深 */
.hero-glow {
  background:
    radial-gradient(52% 46% at 50% 34%, rgba(61, 240, 141, .18), rgba(61, 240, 141, .06) 46%, transparent 72%),
    radial-gradient(40% 42% at 78% 20%, rgba(96, 140, 255, .10), transparent 70%),
    radial-gradient(36% 40% at 20% 24%, rgba(180, 140, 255, .07), transparent 70%);
}

/* 3) 小节标签：给徽章加一层柔光，与主按钮的发光质感保持一致 */
.section-label { box-shadow: 0 0 22px -10px var(--glow); }

/* 4) 转化区顶部高光：为 CTA 卡增加一条渐隐的顶部描边，强化层次 */
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--acc-line), transparent);
  opacity: .45;
}

/* ============================================================
   视觉优化（第十轮）：背景质感 · 区块节奏 · 卡片层次
   ============================================================ */

/* 1) 背景质感：正文背景铺一层极淡网格纹理，破除纯色"发平" */
body {
  background-image:
    linear-gradient(rgba(141, 166, 226, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 166, 226, .04) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* 2) 区块节奏：交替区块底色随深蓝底统一（新 --bg-soft 已明显亮于 --bg） */
.features,
.pricing,
.band { background: var(--bg-soft); }

/* 3) 卡片层次：面板卡叠加一层顶部受光渐变，增强浮起感 */
.feature-card,
.biz-card,
.scene,
.step {
  background: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, 0) 42%), var(--panel);
}

/* ============================================================
   产品预览（第十一轮）：文案横向排列
   ============================================================ */

/* 任务条目：标题与副标题由上下两行改为同一行 */
.task-main {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}
.task-main .task-sub { margin: 0; }

/* 侧边栏导航与项目：由竖排改为横向排列（可换行） */
.side-nav,
.side-projects {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
}
.side-label { width: 100%; margin-bottom: 2px; }
.side-item,
.side-project { padding: 6px 10px; }

/* ============================================================
   背景色优化（第十二轮）：深蓝底
   纯黑蓝 #050A18 → 深蓝 #0A112B，面板同比例提蓝，
   并同步提亮各浮起层的硬编码底色，保持「背景 < 交替区 < 卡片 < 强调区」层次。
   ============================================================ */

:root {
  --bg: #0A112B;
  --bg-soft: #0C1432;
  --panel: #0E1A3C;
  --panel-2: #101F42;
}

/* 吸顶栏 / 移动菜单 / 页内导航的半透明底随新底色同步（避免滚动时偏黑） */
.site-header.scrolled { background: rgba(10, 17, 43, .82); }
.mobile-menu { background: rgba(10, 17, 43, .97); }
.section-nav { background: rgba(10, 17, 43, .86); }

/* 浮起层硬编码底色同步提亮（相对新 --bg 保持 +1~2 档） */
.app-frame { background: #0C1530; }
.app-url { background: #0E1836; }
.demo-panel { background: #0E1A3C; }
.cta-band { background: #0F1C40; }
.plan.featured { background: #0F1C40; }
.avatar-stack .avatar { box-shadow: 0 0 0 2px #0C1530; }

/* ============================================================
   浅色主题（第十三轮）：参考苹果官网，全站白底
   覆盖上方全部暗色规则；仅复用/重定义设计变量与既有组件。
   ============================================================ */

:root {
  color-scheme: light;
  accent-color: #006B35;
  --bg: #FFFFFF;
  --bg-soft: #F5F5F7;
  --panel: #FFFFFF;
  --panel-2: #F5F5F7;
  --ink: #1D1D1F;
  --ink-2: #424245;
  --ink-3: #56565A;
  --line: rgba(0, 0, 0, .08);
  --line-2: rgba(0, 0, 0, .16);
  --acc: #006B35;
  --acc-ink: #FFFFFF;
  --acc-dim: rgba(0, 107, 53, .08);
  --acc-dim-2: rgba(0, 107, 53, .14);
  --acc-line: rgba(0, 107, 53, .42);
  --glow: rgba(0, 107, 53, .16);
  --err: #D70015;
}

/* ---------- 基础 ---------- */
::selection { background: rgba(0, 122, 61, .18); }
body { background-image: none; } /* 去掉深色网格纹理 */

/* ---------- 按钮 ---------- */
.btn-primary { box-shadow: 0 8px 24px -12px rgba(0, 122, 61, .5); }
.btn-primary:hover {
  background: #005A2E;
  box-shadow: 0 10px 28px -12px rgba(0, 107, 53, .55), 0 0 20px rgba(0, 107, 53, .12);
}
.btn-ghost { background: rgba(0, 0, 0, .02); }

/* ---------- 头部 / 导航 ---------- */
.site-header.scrolled { background: rgba(255, 255, 255, .82); }
.mobile-menu { background: rgba(255, 255, 255, .98); }
.section-nav { background: rgba(255, 255, 255, .86); }
.brand svg { filter: none; }

/* ---------- Hero ---------- */
.hero-glow {
  background:
    radial-gradient(52% 46% at 50% 30%, rgba(0, 122, 61, .09), rgba(0, 122, 61, .03) 46%, transparent 72%),
    radial-gradient(40% 42% at 78% 18%, rgba(0, 113, 227, .07), transparent 70%),
    radial-gradient(36% 40% at 20% 22%, rgba(128, 0, 255, .05), transparent 70%);
}
.hero-badge { background: rgba(0, 0, 0, .04); }
.badge-dot { box-shadow: 0 0 8px rgba(0, 122, 61, .4); }
.hl { text-shadow: none; }

/* ---------- 产品预览 ---------- */
.app-frame {
  background: #FFFFFF;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .04), 0 24px 56px -32px rgba(0, 0, 0, .18);
}
.app-chrome { background: rgba(0, 0, 0, .02); }
.app-chrome .dot { background: #D2D2D7; }
.app-url { background: #F5F5F7; }
.app-side { background: rgba(0, 0, 0, .02); }
.side-project.active { background: rgba(0, 0, 0, .06); }
.app-progress { background: #F5F5F7; }
.bar { background: #E8E8ED; }
.bar i { box-shadow: 0 0 10px rgba(0, 122, 61, .3); }
.app-ai { background: var(--acc-dim); border-color: var(--acc-line); }
.ai-dot { box-shadow: 0 0 8px rgba(0, 122, 61, .6); }
.live-dot { box-shadow: 0 0 8px rgba(0, 122, 61, .5); }
.task:hover { background: rgba(0, 0, 0, .03); }
.tick-done { box-shadow: 0 0 8px rgba(0, 122, 61, .25); }

/* 头像色（浅色下用深色字 + 浅色底） */
.av-a { background: rgba(0, 107, 53, .12); color: var(--acc); border-color: rgba(0, 107, 53, .28); }
.av-b { background: rgba(0, 113, 227, .12); color: #0066CC; border-color: rgba(0, 113, 227, .28); }
.av-c { background: rgba(128, 0, 255, .10); color: #7A3DC8; border-color: rgba(128, 0, 255, .24); }
.av-more { background: #F5F5F7; }
.avatar-stack .avatar { box-shadow: 0 0 0 2px #FFFFFF; }

/* 状态徽章 */
.st-done { color: var(--acc); border-color: rgba(0, 107, 53, .3); background: rgba(0, 107, 53, .08); }
.st-doing { color: var(--acc); }
.st-todo { color: var(--ink-3); background: rgba(0, 0, 0, .03); }

/* ---------- 卡片 / 面板 ---------- */
.feature-card,
.biz-card,
.scene,
.step { background: #FFFFFF; }
.feature-card:hover,
.biz-card:hover { box-shadow: 0 16px 40px -28px rgba(0, 0, 0, .28), 0 0 30px -18px var(--glow); }
.testi-card:hover { box-shadow: 0 16px 40px -28px rgba(0, 0, 0, .22); }
.testi-avatar { background: #E8E8ED; }
.plan.featured {
  background: #FFFFFF;
  box-shadow: 0 0 0 1px var(--acc-line), 0 24px 56px -40px rgba(0, 0, 0, .35);
}
.plan-tag { box-shadow: 0 6px 16px -6px rgba(0, 122, 61, .35); }

/* ---------- 看板 / 转化区 ---------- */
.board { background: #F5F5F7; box-shadow: 0 16px 40px -32px rgba(0, 0, 0, .18); }
.metric { background: #FFFFFF; }
.cta-band {
  background: #F5F5F7;
  box-shadow: 0 24px 60px -40px rgba(0, 0, 0, .3);
}
.disclaimer { background: rgba(0, 0, 0, .02); }
.hero-tags li { background: rgba(0, 0, 0, .04); }
.ph { background: rgba(0, 0, 0, .03); }

/* ---------- 弹窗 / 表单 ---------- */
.demo-dialog::backdrop { background: rgba(0, 0, 0, .4); }
.demo-panel {
  background: #FFFFFF;
  box-shadow: 0 40px 100px -40px rgba(0, 0, 0, .4), 0 0 60px -30px var(--glow);
}
.dialog-close:hover { background: rgba(0, 0, 0, .05); }
.field input,
.field select,
.field textarea { background: #F5F5F7; }
.field input::placeholder,
.field textarea::placeholder { color: #86868B; }
.field input:focus,
.field select:focus,
.field textarea:focus { box-shadow: 0 0 0 3px rgba(0, 122, 61, .16); }
.field.invalid input,
.field.invalid select { border-color: rgba(215, 0, 21, .5); }
.field.invalid input:focus,
.field.invalid select:focus { box-shadow: 0 0 0 3px rgba(215, 0, 21, .12); }
.success-recap { background: rgba(0, 0, 0, .03); }

/* ---------- 第十八轮：页脚备案号居中（三栏等分：版权左 | 备案正中 | 地址右） ---------- */
.footer-bottom > p:first-child { flex: 1; text-align: left; }
.footer-icp { flex: 1; margin: 0; text-align: center; }
.footer-icp a {
  color: var(--ink-3);
  text-decoration: none;
}
.footer-icp a:hover { color: var(--acc); }
.footer-bottom .footer-addr { flex: 1; margin: 0; display: flex; align-items: center; justify-content: flex-end; gap: 5px; }

@media (max-width: 640px) {
  .footer-bottom > p:first-child { flex: none; }
  .footer-icp { flex: none; width: 100%; text-align: center; }
  .footer-bottom .footer-addr { flex: none; width: 100%; justify-content: flex-start; }
}

/* ---------- 第十五轮：预览按钮「新增」水平排列（防止两字竖排换行） ---------- */
.app-new { white-space: nowrap; flex: none; }

/* ============================================================
   配色优化（第十四轮）：苹果官网化，去「AI 味」
   - 主色：深绿 #006B35 → 苹果蓝 #0066CC（白底蓝字 / 蓝底白字均 ≥ 4.5:1）
   - 光晕：--glow 清零；全部彩色 box-shadow 与 hero 彩色光晕改中性或极淡
   - 徽章：绿色系改「灰系 + 蓝系」克制配色；选中态改实底蓝白字
   ============================================================ */

:root {
  accent-color: #0066CC;
  --acc: #0066CC;
  --acc-ink: #FFFFFF;
  --acc-dim: rgba(0, 102, 204, .08);
  --acc-dim-2: rgba(0, 102, 204, .14);
  --acc-line: rgba(0, 102, 204, .4);
  --glow: rgba(0, 102, 204, 0);
}

/* ---------- 基础 ---------- */
::selection { background: rgba(0, 102, 204, .18); }

/* ---------- 按钮：蓝底白字 + 中性阴影 ---------- */
.btn-primary { box-shadow: 0 8px 24px -14px rgba(0, 102, 204, .35); }
.btn-primary:hover {
  background: #0077ED;
  box-shadow: 0 10px 26px -14px rgba(0, 102, 204, .4);
}

/* ---------- Hero：极淡蓝色氛围光，去霓虹感 ---------- */
.hero-glow {
  background:
    radial-gradient(52% 46% at 50% 30%, rgba(0, 102, 204, .05), rgba(0, 102, 204, .015) 46%, transparent 72%),
    radial-gradient(40% 42% at 78% 18%, rgba(140, 140, 140, .04), transparent 70%);
}
.badge-dot { box-shadow: none; }

/* ---------- 小节标签：白底蓝字（去绿底） ---------- */
.section-label { background: transparent; }

/* ---------- 产品预览：去发光，选中态实底蓝 ---------- */
.bar i { box-shadow: none; }
.ai-dot { box-shadow: none; }
.live-dot { box-shadow: none; }
.tick-done { box-shadow: none; }
.side-item.active { background: var(--acc); color: #FFFFFF; }
.side-project.active { background: rgba(0, 0, 0, .06); }
.ws-avatar { background: var(--acc); color: #FFFFFF; }

/* ---------- 第十六轮：预览侧边栏图标与导航 Logo 统一（透明底 + 蓝色圆环线稿，同 .brand svg） ---------- */
.ws-avatar { background: transparent; border-color: transparent; color: var(--acc); }

/* ---------- 头像：蓝 + 双灰，去紫绿 ---------- */
.av-a { background: rgba(0, 102, 204, .10); color: #004D99; border-color: rgba(0, 102, 204, .28); }
.av-b { background: rgba(0, 0, 0, .05); color: #4A4A50; border-color: rgba(0, 0, 0, .12); }
.av-c { background: rgba(0, 0, 0, .05); color: #4A4A50; border-color: rgba(0, 0, 0, .12); }

/* ---------- 状态徽章：灰系 + 蓝字 ---------- */
.st-done { color: var(--ink-2); border-color: rgba(0, 0, 0, .1); background: rgba(0, 0, 0, .04); }
.st-doing { color: var(--acc); border-color: var(--acc-line); background: transparent; }
.st-todo { color: var(--ink-3); background: rgba(0, 0, 0, .03); }

/* ---------- 功能编号 / 勾选：蓝字去底（编号）、实底蓝圆（勾选） ---------- */
/* 注意：.f-num 是 <p>，会被 .feature-card > p（0,1,1）覆盖颜色，须写 .feature-card > p.f-num（0,2,1） */
.feature-card > p.f-num { background: transparent; border-bottom-color: var(--line); color: var(--acc); box-shadow: none; }
.tick-done { background: var(--acc); color: #FFFFFF; }
.tick-doing { box-shadow: none; }

/* ---------- 表单：聚焦光环改蓝色 ---------- */
.field input:focus,
.field select:focus,
.field textarea:focus { box-shadow: 0 0 0 3px rgba(0, 102, 204, .16); }

/* ---------- 卡片 / 面板：全部转中性阴影，去彩色 glow ---------- */
.feature-card:hover,
.biz-card:hover { box-shadow: 0 16px 40px -28px rgba(0, 0, 0, .22); }
.biz-card:hover { border-color: var(--line-2); }
.testi-card:hover { box-shadow: 0 16px 40px -28px rgba(0, 0, 0, .22); }
.plan.featured {
  background: #FFFFFF;
  box-shadow: 0 0 0 1px var(--acc-line), 0 24px 56px -40px rgba(0, 0, 0, .3);
}
.plan-tag { box-shadow: 0 6px 14px -8px rgba(0, 0, 0, .35); }
.demo-panel {
  background: #FFFFFF;
  box-shadow: 0 40px 100px -40px rgba(0, 0, 0, .35);
}


/* ---------- 第二十四轮：官方动态（日常动态 / 客户案例） ---------- */
.news .section { padding-bottom: 0; }
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.news-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--ink-3);
}
.news-tag {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.news-tag.daily { color: var(--acc); background: var(--acc-dim); }
.news-tag.case { color: var(--ink-2); background: rgba(0, 0, 0, .06); }
.news-card h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 650;
  line-height: 1.5;
}
.news-card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
  padding: 28px 0;
}
@media (max-width: 640px) {
  .news-list { grid-template-columns: 1fr; }
}

/* 官方动态：右下角「阅读全文」按钮（与标签同尺寸同色系） */
.news-read {
  align-self: flex-end;
  margin-top: auto;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity .2s ease;
}
.news-read:hover { opacity: .8; }
.news-read.daily { color: var(--acc); background: var(--acc-dim); }
.news-read.case { color: var(--ink-2); background: rgba(0, 0, 0, .06); }
.news-read.wechat { color: #1A7A3C; background: rgba(26, 122, 60, .10); }

/* 官方动态：官方公众号标签（微信绿，弱化 AI 味的克制用法） */
.news-tag.wechat { color: #1A7A3C; background: rgba(26, 122, 60, .10); }

/* 官方动态：副标题 */
.news-sub {
  margin: -4px 0 0;
  color: var(--ink-3);
  font-size: 13px;
  line-height: 1.6;
}

/* 官方动态：卡片摘要（限制两行，超出省略） */
.news-summary {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 第二十六轮：评价免责说明 ---------- */
.testi-disclaimer {
  margin: 18px 0 0;
  text-align: center;
  font-size: 12.5px;
  color: var(--ink-3);
}

/* ---------- 第二十七轮：关于我们（主体信息） ---------- */
.about-card {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 36px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}
.about-list { margin: 0; }
.about-list > div {
  display: flex;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.about-list > div:last-child { border-bottom: 0; }
.about-list dt {
  flex: none;
  width: 130px;
  font-size: 14px;
  color: var(--ink-3);
}
.about-list dd {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.7;
}
.about-list dd a { color: var(--acc); text-decoration: none; }
.about-list dd a:hover { text-decoration: underline; }
@media (max-width: 640px) {
  .about-card { padding: 22px 20px; }
  .about-list > div { flex-direction: column; gap: 4px; }
  .about-list dt { width: auto; }
}

/* ---------- 第二十八轮：页脚地址（底栏右下角，单行紧凑） ---------- */
.footer-bottom .footer-addr { margin-top: 0; max-width: none; }
.footer-addr-pin {
  display: inline-flex;
  flex: none;
  vertical-align: middle;
  color: var(--ink-3);
  transform: translateY(-1px);
}
.footer-addr-body {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-3);
}