:root {
  --ink: #172033;
  --muted: #667085;
  --line: #e7ebf4;
  --panel: #ffffff;
  --panel-soft: #f8faff;
  --violet: #7b5cff;
  --blue: #4e7dff;
  --cyan: #18bdd6;
  --rose: #f04f87;
  --green: #20b486;
  --shadow: 0 22px 70px rgba(73, 93, 135, .14);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: #fbfcff;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 68% 7%, rgba(123, 92, 255, .12), transparent 30%),
    radial-gradient(circle at 14% 24%, rgba(24, 189, 214, .12), transparent 27%),
    linear-gradient(180deg, #fbfcff 0%, #f6f8ff 48%, #ffffff 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .82);
  border-bottom: 1px solid rgba(231, 235, 244, .7);
  backdrop-filter: blur(16px);
}

.nav-shell {
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 160px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #fff;
  font-size: 15px;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  box-shadow: 0 10px 24px rgba(123, 92, 255, .25);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.nav-links {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: 44px;
}

.nav-links a {
  position: relative;
  padding: 28px 0 24px;
  color: #28334a;
  font-size: 15px;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--blue);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 34px;
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--violet), var(--blue));
  transform: translateX(-50%);
}

.pill-button,
.menu-button,
.text-button,
.primary-button,
.secondary-button,
.close-button {
  border: 0;
  cursor: pointer;
}

.pill-button {
  min-height: 34px;
  padding: 0 18px;
  color: var(--blue);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(73, 93, 135, .08);
}

.menu-button {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero {
  width: min(1180px, calc(100% - 40px));
  min-height: 420px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  align-items: center;
  gap: 60px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(40px, 6vw, 66px);
  line-height: 1.14;
}

.hero h1 span {
  color: transparent;
  background: linear-gradient(90deg, #9b4dff, #4d79ff 64%, #16b9d0);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero p {
  max-width: 520px;
  margin: 24px 0 28px;
  color: #4f5f78;
  font-size: 18px;
  line-height: 1.9;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  color: #4d5970;
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .76);
  box-shadow: 0 10px 28px rgba(73, 93, 135, .08);
}

.hero-visual {
  position: relative;
  min-height: 330px;
}

.orbit {
  position: absolute;
  inset: 44px 10px;
  border: 1px solid rgba(123, 92, 255, .12);
  border-radius: 50%;
  transform: rotate(-10deg);
}

.orbit-two {
  inset: 78px 38px;
  border-color: rgba(24, 189, 214, .12);
  transform: rotate(18deg);
}

.video-card {
  position: absolute;
  top: 82px;
  left: 88px;
  width: 280px;
  aspect-ratio: 1.55;
  display: grid;
  place-items: center;
  border: 15px solid rgba(255, 255, 255, .58);
  border-radius: 28px;
  background: linear-gradient(145deg, #8b57ff 0%, #4d83ff 72%, #17bfd6 100%);
  box-shadow: 0 30px 60px rgba(70, 82, 145, .24);
  transform: perspective(700px) rotateX(8deg) rotateY(-10deg) rotateZ(4deg);
}

.play {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  color: #fff;
  border-radius: 50%;
  background: rgba(255, 255, 255, .16);
}

.progress {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 26px;
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .45);
}

.progress i {
  display: block;
  width: 38%;
  height: 100%;
  border-radius: inherit;
  background: #fff;
}

.float-icon {
  position: absolute;
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  color: #fff;
  font-size: 25px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 18px 36px rgba(73, 93, 135, .18);
}

.float-icon.link {
  top: 84px;
  left: 26px;
  transform: rotate(-16deg);
}

.float-icon.down {
  right: 30px;
  bottom: 70px;
  background: linear-gradient(135deg, var(--violet), var(--rose));
  transform: rotate(-10deg);
}

.parser-card,
.platform-strip,
.feature-grid article,
.guide-section,
.faq-section details {
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(231, 235, 244, .9);
  box-shadow: var(--shadow);
}

.parser-card {
  width: min(1080px, calc(100% - 40px));
  margin: 12px auto 38px;
  padding: 34px 46px 42px;
  border-radius: 16px;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 28px;
}

.tab {
  min-height: 46px;
  color: #5a6478;
  background: #fff;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.tab.active {
  color: var(--blue);
  background: linear-gradient(90deg, rgba(123, 92, 255, .09), rgba(24, 189, 214, .08));
}

.parse-form {
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 14px;
}

.input-wrap input {
  width: 100%;
  min-height: 58px;
  padding: 0 16px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #dce3f1;
  border-radius: 9px;
  outline: 0;
  transition: border-color .2s, box-shadow .2s;
}

.input-wrap input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(78, 125, 255, .12);
}

.primary-button {
  min-height: 52px;
  padding: 0 22px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  border-radius: 9px;
  box-shadow: 0 14px 28px rgba(78, 125, 255, .25);
}

.primary-button:disabled {
  cursor: wait;
  opacity: .7;
}

.secondary-button {
  min-height: 42px;
  padding: 0 18px;
  color: #344054;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.text-button {
  padding: 0;
  color: var(--blue);
  background: transparent;
}

.settings-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 22px;
  color: #758197;
  font-size: 14px;
}

.settings-row a {
  color: var(--blue);
}

.notice {
  margin-top: 24px;
  padding: 14px 16px;
  color: #5a3c0b;
  background: #fff8e7;
  border: 1px solid #ffe1a8;
  border-radius: 8px;
}

.notice.error {
  color: #8f1f32;
  background: #fff0f3;
  border-color: #ffd0d9;
}

.result-panel {
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.result-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
}

.cover {
  width: 100%;
  aspect-ratio: 9 / 13;
  object-fit: cover;
  border-radius: 14px;
  background: #eef3ff;
}

.video-preview {
  width: 100%;
  max-height: 360px;
  border-radius: 14px;
  background: #111827;
}

.result-panel h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.result-panel p {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.7;
}

.resource-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.resource-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.resource-item span {
  overflow-wrap: anywhere;
  color: #344054;
  font-size: 14px;
}

.resource-item a {
  flex: 0 0 auto;
  color: var(--blue);
  font-weight: 700;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.image-grid a {
  display: block;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.image-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.platform-section,
.advantage-section,
.pricing-section,
.guide-section,
.faq-section {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto 48px;
}

.platform-section h2,
.section-heading h2,
.pricing-section h2,
.guide-section h2,
.faq-section h2 {
  margin: 0 0 18px;
  text-align: center;
  font-size: 22px;
}

.platform-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  padding: 26px 34px;
  border-radius: 12px;
}

.platform-strip span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #344054;
}

.platform-strip b {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: #fff;
  border-radius: 9px;
  font-size: 13px;
}

.douyin { background: #101828; }
.kuaishou { background: #ff6b00; }
.rednote { background: #f1243d; }
.shipinhao { background: #f0a436; }
.bili { background: #f05da8; }
.more { background: var(--violet); }

.section-heading {
  margin-bottom: 24px;
  text-align: center;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-grid article {
  min-height: 190px;
  padding: 28px 24px;
  text-align: center;
  border-radius: 10px;
}

.feature-grid span {
  display: inline-grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin-bottom: 16px;
  color: var(--violet);
  font-weight: 800;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(123, 92, 255, .18), rgba(24, 189, 214, .12));
}

.feature-grid h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.feature-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

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

.pricing-grid article {
  padding: 28px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid rgba(231, 235, 244, .95);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.pricing-grid article.featured {
  border-color: rgba(78, 125, 255, .35);
  background: linear-gradient(180deg, rgba(78, 125, 255, .08), rgba(255, 255, 255, .95));
}

.pricing-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  color: var(--blue);
  background: #eef3ff;
  border-radius: 999px;
  font-weight: 700;
}

.pricing-grid h3 {
  margin: 18px 0 12px;
  font-size: 34px;
}

.pricing-grid p {
  min-height: 54px;
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.7;
}

.pricing-grid button {
  width: 100%;
  min-height: 46px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.guide-section {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 34px;
  padding: 34px;
  border-radius: 12px;
}

.guide-section h2 {
  text-align: left;
}

.guide-section p,
.guide-section li,
.faq-section p {
  color: var(--muted);
  line-height: 1.8;
}

.guide-section ol {
  margin: 0;
  padding-left: 22px;
}

.faq-section {
  display: grid;
  gap: 14px;
}

.faq-section h2 {
  margin-bottom: 4px;
}

.faq-section details {
  padding: 18px 22px;
  border-radius: 10px;
}

.faq-section summary {
  cursor: pointer;
  font-weight: 700;
}

.site-footer {
  margin-top: 64px;
  padding: 40px 0 24px;
  background: linear-gradient(180deg, rgba(246, 248, 255, .9), #fff);
  border-top: 1px solid var(--line);
}

.footer-grid {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 34px;
}

.footer-grid h3 {
  margin: 0 0 14px;
  font-size: 15px;
}

.footer-grid a,
.footer-grid p {
  display: block;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
}

.qr {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  margin-bottom: 10px;
  color: var(--blue);
  font-weight: 800;
  background:
    linear-gradient(90deg, #172033 45%, transparent 45% 55%, #172033 55%) 10px 10px / 18px 18px,
    linear-gradient(#172033 45%, transparent 45% 55%, #172033 55%) 10px 10px / 18px 18px,
    #fff;
  border: 8px solid #eef2ff;
  border-radius: 8px;
}

.copyright {
  width: min(1080px, calc(100% - 40px));
  margin: 34px auto 0;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: #8a94a6;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.key-dialog {
  width: min(520px, calc(100% - 30px));
  padding: 0;
  border: 0;
  border-radius: 14px;
  box-shadow: 0 30px 90px rgba(23, 32, 51, .24);
}

.key-dialog::backdrop {
  background: rgba(23, 32, 51, .42);
  backdrop-filter: blur(6px);
}

.key-card {
  position: relative;
  padding: 28px;
}

.key-card h2 {
  margin: 0 0 10px;
}

.key-card p {
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.7;
}

.key-card code {
  color: var(--blue);
  overflow-wrap: anywhere;
}

.key-card label span {
  display: block;
  margin-bottom: 8px;
  color: #344054;
  font-weight: 700;
}

.key-card input {
  width: 100%;
  min-height: 48px;
  padding: 0 12px;
  border: 1px solid #dce3f1;
  border-radius: 8px;
  outline: 0;
}

.login-card {
  text-align: left;
}

.login-card > h2,
.login-card > p {
  text-align: center;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 18px 0 20px;
  padding: 6px;
  background: #f4f7ff;
  border-radius: 10px;
}

.auth-tab {
  min-height: 40px;
  color: #5a6478;
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.auth-tab.active {
  color: var(--blue);
  background: #fff;
  box-shadow: 0 10px 22px rgba(73, 93, 135, .08);
}

.auth-panel {
  display: none;
}

.auth-panel.active {
  display: block;
}

.auth-panel label {
  display: block;
  margin-bottom: 14px;
}

.wechat-qr {
  display: grid;
  place-items: center;
  width: 190px;
  height: 190px;
  margin: 18px auto 22px;
  color: var(--ink);
  font-weight: 800;
  background:
    linear-gradient(90deg, #172033 45%, transparent 45% 55%, #172033 55%) 18px 18px / 34px 34px,
    linear-gradient(#172033 45%, transparent 45% 55%, #172033 55%) 18px 18px / 34px 34px,
    #fff;
  border: 12px solid #eef3ff;
  border-radius: 12px;
}

.code-row {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 10px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 22px;
}

.close-button {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  color: #667085;
  background: #f4f6fb;
  border-radius: 8px;
}

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

@media (max-width: 900px) {
  .nav-shell {
    min-height: 66px;
    gap: 14px;
  }

  .menu-button {
    display: block;
  }

  .pill-button {
    display: none;
  }

  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 72px;
    display: none;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: grid;
    gap: 4px;
  }

  .nav-links a {
    padding: 12px;
    border-radius: 8px;
  }

  .nav-links a.active::after {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 44px 0 10px;
  }

  .hero-visual {
    min-height: 250px;
    order: -1;
  }

  .video-card {
    left: 50%;
    top: 54px;
    width: min(270px, 78vw);
    transform: translateX(-50%) perspective(700px) rotateX(8deg) rotateY(-8deg) rotateZ(4deg);
  }

  .hero-tags {
    gap: 12px;
  }

  .parser-card {
    padding: 24px 18px 30px;
  }

  .parse-form,
  .tabs,
  .result-layout,
  .guide-section {
    grid-template-columns: 1fr;
  }

  .platform-strip,
  .feature-grid,
  .pricing-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .copyright {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .nav-shell,
  .hero,
  .parser-card,
  .platform-section,
  .advantage-section,
  .pricing-section,
  .guide-section,
  .faq-section,
  .footer-grid,
  .copyright {
    width: min(100% - 24px, 1080px);
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero p {
    font-size: 16px;
  }

  .platform-strip,
  .feature-grid,
  .pricing-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .platform-strip {
    padding: 18px;
  }

  .resource-item {
    align-items: flex-start;
    flex-direction: column;
  }

  .dialog-actions {
    flex-direction: column;
  }
}

.admin-page {
  min-height: 100vh;
  background: #f6f8fc;
}

.admin-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.admin-top {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.admin-login,
.admin-panel,
.admin-stats article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(73, 93, 135, .08);
}

.admin-login {
  max-width: 520px;
  margin: 70px auto 0;
  padding: 34px;
}

.admin-login h1 {
  margin: 0 0 10px;
  font-size: 30px;
}

.admin-login p {
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.7;
}

.admin-login code {
  padding: 2px 6px;
  background: #eef2ff;
  border-radius: 6px;
}

.admin-login form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.admin-login input,
.admin-table input,
.admin-table select {
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

.admin-login input:focus,
.admin-table input:focus,
.admin-table select:focus {
  border-color: rgba(78, 125, 255, .55);
  box-shadow: 0 0 0 4px rgba(78, 125, 255, .1);
}

.admin-dashboard {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.admin-stats article {
  padding: 18px;
}

.admin-stats span,
.admin-table small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.admin-stats strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
}

.admin-panel {
  padding: 22px;
}

.admin-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.admin-panel-head h2 {
  margin: 0 0 6px;
  font-size: 22px;
}

.admin-panel-head p {
  margin: 0;
  color: var(--muted);
}

.admin-table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 14px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.admin-table th {
  color: #4f5f78;
  font-size: 13px;
  background: #f8faff;
}

.admin-table td {
  font-size: 14px;
}

.admin-table a {
  color: var(--blue);
  word-break: break-all;
}

.admin-table button {
  min-height: 34px;
  margin-left: 6px;
  padding: 0 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.quota-input {
  width: 110px;
}

@media (max-width: 900px) {
  .admin-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .admin-shell {
    width: min(100% - 24px, 1080px);
  }

  .admin-top,
  .admin-panel-head,
  .admin-login form {
    align-items: stretch;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .admin-stats {
    grid-template-columns: 1fr;
  }
}