:root {
  --ink: #222B27;
  --ink-soft: #4B5852;
  --paper: #FAF9F6;
  --paper-2: #ffffff;
  --line: #E3E8E3;
  --stamp: #24584B;
  --stamp-soft: #E7EEEC;
  --tool: #24584B;
  --tool-soft: #E7EEEC;
  --warn: #4B5852;
  --warn-soft: #F3F5F3;
  --ok: #24584B;
  --shadow: 0 1px 2px rgba(34, 43, 39, 0.05);
  --radius: 16px;
  --sticky-h: 64px;
  --space: 48px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Noto Sans SC", sans-serif;
  --mono: "Cascadia Mono", "Sarasa Mono SC", "Microsoft YaHei UI", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-soft);
  background: var(--paper);
  line-height: 1.75;
  font-size: 16px;
  font-weight: 400;
  padding-bottom: calc(var(--sticky-h) + 16px);
  overflow-x: hidden;
}

img { max-width: 100%; }
a { color: var(--tool); }
button, input, select { font: inherit; }

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
}
.skip:focus { left: 8px; z-index: 80; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(250, 249, 246, 0.94);
  border-bottom: 1px solid var(--line);
  max-width: 100%;
}
.brand {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}
.brand b {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.brand span {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.top-actions { display: flex; gap: 8px; flex-shrink: 0; }

.wrap {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 0 20px;
  max-width: 100%;
}

.hero {
  padding: 28px 0 12px;
}

.hero-v2 {
  display: grid;
  gap: 28px;
  padding: 40px 0 48px;
}
.hero-v2 .eyebrow {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--tool);
  font-weight: 400;
}
.hero-v2 h1 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 30px;
  line-height: 1.28;
  font-weight: 650;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}
.hero-v2 .subhead {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}
.hero-v2 .lead {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
  font-weight: 400;
}
.hero-guide {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
}
.hero-preview {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.hero-preview .preview-label {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--tool);
}
.hero-preview .preview-title {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}
.preview-list {
  margin: 0;
}
.preview-list div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}
.preview-list dt {
  margin: 0;
  color: var(--ink);
  font-weight: 400;
}
.preview-list dd {
  margin: 0;
}
.hero-preview img {
  display: block;
  width: 100%;
  border-radius: 12px;
}
.note {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.scene-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0 0 40px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.scene-nav a {
  color: var(--tool);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: 15px;
}
.scene-nav a:hover { text-decoration: underline; }

.scene-v2 {
  padding: 8px 0 48px;
  scroll-margin-top: 76px;
}
.scene-v2 .scene-kicker {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--tool);
}
.scene-v2 h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.35;
  font-weight: 650;
}
.scene-v2 h3 {
  margin: 22px 0 8px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
}
.scene-v2 > p {
  margin: 0 0 8px;
}
.cta-copy {
  margin: 18px 0 8px;
  color: var(--ink);
}
.plain-list {
  margin: 0;
  padding-left: 1.15em;
}
.plain-list li { margin: 6px 0; }
.sample {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px 8px;
  box-shadow: var(--shadow);
}
.sample table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 8px;
}
.sample th, .sample td {
  text-align: left;
  vertical-align: top;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-weight: 400;
}
.sample th { color: var(--ink); width: 42%; }
.more {
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.more summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--ink);
  font-weight: 400;
}
.more summary:focus-visible { outline: 3px solid #24584b33; outline-offset: 2px; }
.more p { margin: 10px 0; }
.kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stamp);
  border: 1px solid #e2b8b3;
  background: var(--stamp-soft);
  padding: 3px 8px;
  border-radius: 999px;
}
.hero h1 {
  font-size: clamp(22px, 6.2vw, 40px);
  line-height: 1.32;
  margin: 12px 0 10px;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
  word-break: break-word;
}
.lead {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 18px;
}
.hero-points {
  margin: 0 0 18px;
  padding-left: 1.15em;
}
.hero-points li { margin: 6px 0; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 16px;
  min-height: 46px;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  font-weight: 600;
}
.btn:focus-visible { outline: 3px solid #24584b44; outline-offset: 2px; }
.btn-primary { background: var(--tool); color: #fff; }
.btn-primary:hover { background: #1c463c; }
.btn-ghost {
  background: #fff;
  color: var(--tool);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--tool); }
.btn-wide { width: 100%; }

.panel {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.fit {
  display: grid;
  gap: 12px;
  margin: 18px 0 28px;
}
.fit h2 { margin: 0 0 8px; font-size: 18px; }
.fit ul { margin: 0; padding-left: 1.15em; }
.yes { border-left: 3px solid var(--tool); }
.no { border-left: 3px solid var(--line); }
.muted { color: var(--ink-soft); font-size: 15px; line-height: 1.75; }

.jump {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0 0 24px;
}
.jump a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--ink);
  min-height: 48px;
}
.jump a span:last-child {
  color: var(--ink-soft);
  font-size: 13px;
}
.jump a:hover { border-color: var(--tool); }
.num {
  font-size: 13px;
  color: var(--tool);
  font-weight: 600;
}

.scene {
  margin: 0 0 28px;
  padding: 18px 16px 16px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.scene h2 {
  margin: 8px 0 10px;
  font-size: 22px;
  line-height: 1.35;
}
.scene-grid {
  display: grid;
  gap: 12px;
}
.block h3 {
  margin: 0 0 6px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--tool);
}
.block p, .block ul { margin: 0; }
.block ul { padding-left: 1.15em; }
.files {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}
.files li {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--tool-soft);
  color: var(--tool);
  border-radius: 8px;
  padding: 8px 10px;
  margin: 6px 0;
  word-break: break-all;
}

.mock {
  margin-top: 14px;
  border: 1px dashed #b9c7c4;
  border-radius: 12px;
  overflow: hidden;
  background: #fbfcfb;
}
.mock-bar {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  background: var(--warn-soft);
  color: var(--warn);
  font-size: 12px;
  font-weight: 700;
}
.mock table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.mock th, .mock td {
  border-top: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.mock th { color: var(--ink-soft); font-weight: 600; width: 34%; }
.scene-cta { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }

.compare {
  display: block;
  overflow-x: auto;
  max-width: 100%;
  margin: 8px 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper-2);
  -webkit-overflow-scrolling: touch;
}
.compare table { width: 100%; border-collapse: collapse; }
.compare th, .compare td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.compare th { background: #F3F5F3; font-size: 14px; color: var(--ink); }
.compare tr:last-child td { border-bottom: 0; }

@media (max-width: 719px) {
  .compare thead { display: none; }
  .compare table,
  .compare tbody,
  .compare th,
  .compare td,
  .compare tr {
    display: block;
    width: 100%;
    min-width: 0;
  }
  .compare tr {
    padding: 4px 0 8px;
    border-bottom: 1px solid var(--line);
  }
  .compare th {
    margin-top: 8px;
  }
  .compare td:nth-child(1)::before { content: "你要做的事："; color: var(--ink-soft); }
  .compare td:nth-child(2)::before { content: "免费公开："; color: var(--ink-soft); display: block; }
  .compare td:nth-child(3)::before { content: "完整版："; color: var(--ink-soft); display: block; }
}

.faq details {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 4px 14px;
  margin: 8px 0;
}
.faq summary {
  cursor: pointer;
  min-height: 46px;
  display: flex;
  align-items: center;
  font-weight: 650;
}
.faq details p { margin: 0 0 12px; color: var(--ink-soft); }

.wechat {
  font-size: 28px;
  font-family: var(--mono);
  margin: 12px 0 16px;
  letter-spacing: 0.04em;
  color: var(--ink);
  font-weight: 600;
  user-select: all;
}
.wechat-inline {
  font-family: var(--mono);
  color: var(--ink);
  font-weight: 600;
}
.copy-fallback {
  margin-top: 12px;
}
.wechat-select {
  display: block;
  margin-top: 8px;
  width: 100%;
  max-width: 280px;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}
.meta-grid {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: #f3eee6;
  border-radius: 10px;
  font-size: 14px;
}
.meta span { color: var(--ink-soft); }
.pending { color: var(--tool); font-weight: 600; }
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--sticky-h) + 16px);
  transform: translateX(-50%) translateY(12px);
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: 0.2s ease;
  z-index: 60;
  max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 20px calc(8px + env(safe-area-inset-bottom));
  background: rgba(250, 249, 246, 0.96);
  border-top: 1px solid var(--line);
}
.sticky-cta .btn {
  flex: 1;
  min-height: 44px;
  padding: 8px 12px;
  font-size: 15px;
  white-space: normal;
  line-height: 1.2;
}
.sticky-link {
  flex: 0 0 auto;
  color: var(--tool);
  text-decoration: none;
  font-size: 15px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.compare-cols {
  display: grid;
  gap: 24px;
  margin: 8px 0 16px;
}
.compare-cols h3 {
  margin: 0 0 8px;
}

.foot {
  padding: 8px 0 28px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}
.foot ul { padding-left: 1.15em; }

h2.sec {
  margin: 28px 0 10px;
  font-size: 22px;
}
#contact, #compare, #faq {
  scroll-margin-top: 76px;
}

@media (min-width: 720px) {
  .fit { grid-template-columns: 1fr 1fr; }
  .jump { grid-template-columns: repeat(3, 1fr); }
  .jump a {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .scene-grid { grid-template-columns: 1fr 1fr; }
  .scene-grid .span-2 { grid-column: 1 / -1; }
  .compare table { min-width: 520px; }
  .sticky-cta { display: none; }
  body { padding-bottom: 0; }
  .toast { bottom: 24px; }
  .compare-cols { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (min-width: 900px) {
  .hero-v2 {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: start;
    padding: 72px 0 80px;
  }
  .hero-v2 h1 { font-size: 44px; }
  .hero-v2 .subhead { font-size: 20px; }
  .scene-v2 {
    padding: 8px 0 80px;
  }
  .scene-v2 h2 { font-size: 32px; }
}

.scene, .panel, .mock, .hero, .fit, .jump, .files, .scene-grid, .hero-cta, .contact-card {
  max-width: 100%;
  min-width: 0;
}
.mock { overflow-x: auto; }
.mock td, .mock th { overflow-wrap: anywhere; }
button, .btn { max-width: 100%; }

@media (max-width: 380px) {
  .wechat { font-size: 22px; }
}