html { scroll-behavior: smooth; }
.landing-body { background: radial-gradient(circle at 78% 8%, rgba(217,167,96,.10), transparent 28%), #101114; color: var(--text); }
.landing-nav { position: sticky; top: 0; z-index: 20; max-width: 1180px; margin: 0 auto; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: rgba(16,17,20,.86);}
.landing-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.landing-brand img { width: 36px; height: 36px; object-fit: contain; }
.landing-brand span { display: flex; flex-direction: column; line-height: 1.05; }
.landing-brand b { font-size: 15px; letter-spacing: .03em; }
.landing-brand small { margin-top: 4px; color: var(--text-faint); font-size: 10.5px; letter-spacing: .05em; }
.landing-menu { display: flex; align-items: center; gap: 22px; }
.landing-menu a { color: var(--text-dim); font-size: 13px; text-decoration: none; }
.landing-menu a:hover { color: #fff; }
.landing-hero { max-width: 1180px; margin: 0 auto; padding: 64px 24px 80px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(340px, .8fr); align-items: center; gap: 48px; }
.eyebrow { margin-bottom: 14px; color: #d9a760; font-size: 11px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.hero-copy h1 { max-width: 620px; font-size: clamp(36px, 4.6vw, 58px); line-height: 1.08; letter-spacing: -.05em; }
.hero-copy h1 em { color: #fff; font-style: normal; }
.hero-desc { max-width: 590px; margin-top: 20px; color: var(--text-dim); font-size: 15px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 26px; }
.btn-main, .btn-sub { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px; border-radius: 11px; font-size: 14px; font-weight: 700; text-decoration: none; }
.btn-main { background: #ededed; color: #141414; box-shadow: 0 10px 30px rgba(255,255,255,.08); }
.btn-main:hover { background: #fff; }
.btn-sub { border: 1px solid var(--border); color: var(--text); background: rgba(255,255,255,.04); }
.btn-sub:hover { border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.08); }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 22px; color: var(--text-faint); font-size: 12px; }
.hero-points span::before { content: '✓'; margin-right: 6px; color: #78d29f; }
.hero-visual { position: relative; width: 100%; max-width: 560px; margin-left: auto; }
.hero-visual::before { content: ''; position: absolute; inset: -70px -50px; background: radial-gradient(circle at 60% 45%, rgba(217,167,96,.14), transparent 62%); pointer-events: none; }
.mock-window { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.12); border-radius: 16px; background: #18191d; box-shadow: 0 22px 60px rgba(0,0,0,.45); }
.mock-top { display: flex; align-items: center; gap: 6px; padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,.07); background: #141518; }
.mock-top i { width: 8px; height: 8px; border-radius: 50%; background: #3a3b40; }
.mock-top b { margin-left: 7px; color: #c7c8ce; font-size: 10.5px; font-weight: 600; }
.mock-top span { margin-left: auto; color: #6f7078; font-size: 9.5px; }
.mock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; padding: 3px; background: #0e0f11; }
.mock-grid span { position: relative; aspect-ratio: 4 / 3; background: linear-gradient(145deg, #45474d, #222329); overflow: hidden; }
.mock-grid span::after { position: absolute; left: 7px; bottom: 6px; padding: 2px 5px; border-radius: 4px; font-size: 9px; font-weight: 700; color: #fff; background: rgba(10,12,16,.78); }
.mock-grid .selected::after { content: '已选'; border: 1px solid #78d29f; }
.mock-grid .alt::after { content: '备选'; border: 1px solid #e5b96f; }
.mock-grid .starred::after { content: '★★★★★'; color: #ffd479; letter-spacing: -1px; }
.mock-grid .noted::after { content: '图钉批注'; border: 1px solid #7da7ff; }
.mock-grid span:nth-child(2) { background: linear-gradient(145deg, #7c6458, #2e2928); }
.mock-grid span:nth-child(3) { background: linear-gradient(145deg, #66707e, #272b31); }
.mock-grid span:nth-child(5) { background: linear-gradient(145deg, #575e51, #252923); }

.mock-bottom { display: flex; align-items: center; gap: 9px; padding: 9px 11px; border-top: 1px solid rgba(255,255,255,.07); color: #85868e; font-size: 10.5px; }
.mock-bottom b { color: #fff; font-size: 13px; }
.mock-bottom em { margin-left: auto; padding: 5px 9px; border-radius: 6px; background: rgba(255,255,255,.1); color: #ddd; font-style: normal; }
.landing-section { max-width: 1180px; margin: 0 auto; padding: 76px 24px; border-top: 1px solid rgba(255,255,255,.07); }
.section-head { max-width: 720px; margin-bottom: 42px; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.035em; }
.section-head > p:last-child { margin-top: 14px; color: var(--text-dim); font-size: 15px; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card {
  position: relative; padding: 30px 28px 32px;
  display: grid; grid-template-columns: auto minmax(0, 1fr);
  align-items: center; column-gap: 15px;
  border: 1px solid rgba(255, 255, 255, .08); border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, .018));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 20px 44px -30px rgba(0, 0, 0, .95);
  -webkit-backdrop-filter: blur(22px) saturate(1.25); backdrop-filter: blur(22px) saturate(1.25);
  transition: transform .28s cubic-bezier(.2, .8, .3, 1), border-color .28s ease, box-shadow .28s ease;
}
.feature-card:hover {
  transform: translateY(-5px); border-color: rgba(255, 255, 255, .17);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .09), 0 30px 60px -32px rgba(0, 0, 0, 1);
}
.feature-icon {
  grid-column: 1; grid-row: 1;
  display: inline-grid; place-items: center; width: 46px; height: 46px; margin: 0;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(229, 185, 111, .30), rgba(229, 185, 111, .09));
  color: #f0c986; font-size: 19px; font-weight: 800; letter-spacing: -.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .20), 0 10px 26px -14px rgba(229, 185, 111, .8);
}
.feature-card h3 {
  grid-column: 2; grid-row: 1; margin: 0;
  font-size: 19px; font-weight: 650; letter-spacing: -.015em;
}
.feature-card p {
  grid-column: 1 / -1; grid-row: 2; margin-top: 16px;
  color: var(--text-faint); font-size: 14px; line-height: 1.72;
}
.feature-icon svg { width: 25px; height: 25px; display: block; }
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.flow-grid article { padding: 22px 0; border-top: 1px solid rgba(255,255,255,.16); }
.flow-grid article > span { display: block; margin-bottom: 20px; color: #d9a760; font-size: 34px; font-weight: 700; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.flow-grid h3 { margin-bottom: 10px; font-size: 16px; }
.flow-grid p { color: var(--text-faint); font-size: 12.5px; line-height: 1.75; }
.pricing-section { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 56px; align-items: center; }
.pricing-copy h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.035em; }
.pricing-copy > p { max-width: 560px; margin-top: 16px; color: var(--text-dim); font-size: 15px; line-height: 1.8; }
.pricing-copy ul { margin: 26px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; color: var(--text-dim); font-size: 13.5px; }
.pricing-copy li::before { content: '✓'; margin-right: 9px; color: #78d29f; }
.price-card { padding: 30px; border: 1px solid rgba(217,167,96,.35); border-radius: 18px; background: linear-gradient(180deg, rgba(217,167,96,.09), rgba(217,167,96,.02)); box-shadow: 0 22px 70px rgba(0,0,0,.32); text-align: center; }
.price-card > p:first-child { color: #e5b96f; font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.price { display: flex; align-items: baseline; justify-content: center; margin: 16px 0 8px; }
.price span { color: #e5b96f; font-size: 22px; }
.price b { font-size: 56px; line-height: 1; font-weight: 750; }
.price em { margin-left: 5px; color: var(--text-faint); font-size: 13px; font-style: normal; }
.price-card .btn-main { width: 100%; margin-top: 24px; }
.price-card small { display: block; margin-top: 14px; color: var(--text-faint); font-size: 11.5px; line-height: 1.6; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.faq-grid article { padding: 20px; border: 1px solid rgba(255,255,255,.09); border-radius: 13px; background: rgba(255,255,255,.025); }
.faq-grid h3 { margin-bottom: 9px; font-size: 14px; }
.faq-grid p { color: var(--text-faint); font-size: 12.5px; line-height: 1.75; }
.landing-cta { max-width: 1180px; margin: 0 auto 64px; padding: 48px 24px; border: 1px solid rgba(255,255,255,.1); border-radius: 20px; background: linear-gradient(120deg, rgba(217,167,96,.12), rgba(255,255,255,.025)); text-align: center; }
.landing-cta h2 { font-size: clamp(26px, 4vw, 42px); }
.landing-cta p { margin: 14px 0 24px; color: var(--text-dim); }
.landing-footer { max-width: 1180px; margin: 0 auto; padding: 26px 24px 42px; display: flex; justify-content: space-between; color: var(--text-faint); font-size: 12px; }
@media (max-width: 1080px) {
  .landing-hero { grid-template-columns: 1fr; gap: 34px; padding-top: 48px; }
  .hero-visual { width: 100%; max-width: 560px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .pricing-section { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 820px) {
  .hero-visual::before { display: none; }
  .hero-visual { max-width: 520px; }
  .feature-grid, .flow-grid, .faq-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .landing-nav { padding: 13px 14px; }
  .landing-menu { gap: 12px; }
  .landing-menu a:nth-child(2) { display: none; }
  .landing-hero { padding: 42px 14px 64px; }
  .hero-copy h1 { font-size: 38px; }
  .hero-desc { font-size: 14px; }
  .landing-section { padding: 64px 14px; }
  .feature-grid, .flow-grid, .faq-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; padding: 24px 22px 26px; }
  .feature-icon { width: 44px; height: 44px; margin: 0; border-radius: 13px; }
  .flow-grid article > span { font-size: 28px; margin-bottom: 16px; }
  .price-card { padding: 24px; }
  .landing-footer { flex-direction: column; gap: 8px; padding: 22px 14px 34px; }
}