:root {
  --bg: #f8fbff;
  --bg-soft: #ffffff;
  --bg-muted: #eef5ff;
  --line: #dbe5f1;
  --line-strong: #c6d7ee;
  --text: #142033;
  --text-soft: #52627a;
  --text-mute: #73839a;
  --primary: #2563eb;
  --primary-soft: rgba(37, 99, 235, 0.1);
  --accent: #0ea5e9;
  --shadow: 0 18px 50px rgba(36, 76, 140, 0.08);
  --maxw: 1160px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(14, 165, 233, 0.12), transparent 28%),
    linear-gradient(180deg, #fcfeff 0%, #f7fbff 54%, #f3f8ff 100%);
  line-height: 1.68;
}

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

img {
  display: block;
  max-width: 100%;
}

.i-en,
.i-zh {
  display: none;
}

body.en .i-en,
body.zh .i-zh {
  display: inline;
}

.wrap {
  width: min(var(--maxw), calc(100% - 40px));
  margin: 0 auto;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(14px);
  z-index: -1;
  pointer-events: none;
}

.bg-orb-a {
  top: 80px;
  left: -90px;
  width: 280px;
  height: 280px;
  background: rgba(37, 99, 235, 0.08);
}

.bg-orb-b {
  top: 280px;
  right: -70px;
  width: 240px;
  height: 240px;
  background: rgba(14, 165, 233, 0.08);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(248, 251, 255, 0.8);
  border-bottom: 1px solid rgba(210, 225, 244, 0.75);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 74px;
}

.site-title {
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.nav-links a,
.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.94rem;
  border: 1px solid transparent;
  background: transparent;
  transition: all 180ms ease;
}

.nav-links a:hover,
.nav-links a.is-active,
.lang-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.88);
  border-color: var(--line);
}

.lang-btn {
  cursor: pointer;
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--line);
  font-weight: 600;
}

.hero {
  padding: 56px 0 18px;
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 44px;
  align-items: start;
}

.hero-copy {
  padding-right: 12px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

.hero h1 {
  margin-top: 20px;
  max-width: 10ch;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  line-height: 1.02;
}

.hero-lead,
.lead,
.feature-card p,
.quick-panel p,
.hero-note,
.hero-meta span,
.blog-list-item p,
.article-shell p,
.article-shell li {
  color: var(--text-soft);
}

.hero-lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

button.btn {
  font: inherit;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(38, 94, 180, 0.1);
}

.btn.primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
}

.btn.ghost {
  background: transparent;
  color: var(--text-soft);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.hero-meta strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.92rem;
  color: var(--text);
}

.hero-visual {
  display: grid;
  gap: 18px;
}

.media-card {
  position: relative;
  padding: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(244,249,255,0.92));
  border: 1px solid rgba(205, 221, 243, 0.86);
  box-shadow: var(--shadow);
}

.media-head {
  display: flex;
  gap: 8px;
  padding: 2px 0 12px;
}

.media-head span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #bfd0ea;
}

.visual-frame {
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-caption {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.media-caption span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(205, 221, 243, 0.9);
  background: rgba(255,255,255,0.85);
  color: var(--text-soft);
  font-size: 0.9rem;
}

.hero-note {
  padding: 18px 0 0;
}

.hero-note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 40px;
  align-items: start;
}

.tool-section {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.tool-section + .tool-section {
  margin-top: 32px;
}

.config-form h3,
.config-output h3 {
  margin-bottom: 14px;
  font-size: 1.16rem;
}

.radio-row,
.channel-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.choice-pill,
.check-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.choice-pill input,
.check-line input {
  margin: 0;
}

.field-group {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.config-subblock {
  display: grid;
  gap: 10px;
  margin-top: 8px;
  padding: 14px 16px;
  border: 1px solid rgba(198, 215, 238, 0.95);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.config-subblock + .config-subblock {
  margin-top: 14px;
}

.field-label {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
}

.field-label-muted {
  color: var(--text-soft);
  font-size: 0.88rem;
  font-weight: 600;
}

.field-label-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.link-accent {
  color: #0b63ff;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(11, 99, 255, 0.38);
  text-underline-offset: 3px;
}

.link-accent:hover {
  color: #004ed8;
  text-decoration-color: rgba(0, 78, 216, 0.72);
}

.tooltip-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  outline: none;
}

.tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.74rem;
  font-weight: 800;
  line-height: 1;
  cursor: help;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.tooltip-box {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  width: min(320px, calc(100vw - 48px));
  padding: 12px 14px;
  border: 1px solid rgba(167, 194, 233, 0.9);
  border-radius: 14px;
  background: rgba(18, 30, 52, 0.97);
  color: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 34px rgba(16, 31, 57, 0.22);
  font-size: 0.84rem;
  font-weight: 500;
  line-height: 1.6;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(-4px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
  z-index: 6;
}

.tooltip-box::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  width: 12px;
  height: 12px;
  background: rgba(18, 30, 52, 0.97);
  border-left: 1px solid rgba(167, 194, 233, 0.45);
  border-top: 1px solid rgba(167, 194, 233, 0.45);
  transform: translateX(-50%) rotate(45deg);
}

.tooltip-wrap:hover .tooltip-box,
.tooltip-wrap:focus-within .tooltip-box {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.text-field,
.yaml-preview {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font: inherit;
}

.text-field:focus,
.yaml-preview:focus {
  outline: none;
  border-color: var(--line-strong);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

.channel-fields,
[data-provider-block="wisewk"],
[data-provider-block="custom"],
.backup-fields {
  display: none;
}

.channel-fields.is-visible,
[data-provider-block="custom"].is-visible,
[data-provider-block="wisewk"].is-visible,
.backup-fields.is-visible {
  display: grid;
}

.toggle-line {
  margin-top: 8px;
}

.config-subblock .toggle-line {
  margin-top: 0;
}

.top-gap {
  margin-top: 22px;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.config-output {
  min-width: 0;
}

.sticky-output {
  position: sticky;
  top: 100px;
}

.small-lead {
  font-size: 0.96rem;
}

.qr-note {
  margin-top: 12px;
  color: var(--text-mute);
  font-size: 0.88rem;
}

.yaml-preview {
  min-height: 320px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(14, 27, 48, 0.42);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, visibility 180ms ease;
  z-index: 40;
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.download-modal {
  position: relative;
  width: min(100%, 440px);
  padding: 28px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(205, 221, 243, 0.9);
  box-shadow: 0 28px 60px rgba(24, 55, 103, 0.18);
  text-align: center;
}

.download-modal h2 {
  margin-top: 14px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1.08;
}

.modal-lead {
  margin-top: 12px;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: rgba(238, 245, 255, 0.92);
  color: var(--text-soft);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.qr-shell {
  display: grid;
  place-items: center;
  margin: 22px auto 0;
}

.qr-code {
  width: 224px;
  min-height: 224px;
  padding: 12px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.8);
}

.qr-code img,
.qr-code canvas {
  display: block;
  width: 200px;
  height: 200px;
}

.qr-url {
  margin: 14px 0 0;
  color: var(--text-mute);
  font-size: 0.85rem;
  word-break: break-all;
}

.modal-download-link {
  margin-top: 18px;
  width: 100%;
}

.section {
  padding: 86px 0;
}

.section-soft {
  background:
    linear-gradient(180deg, rgba(238, 243, 250, 0.7), rgba(255,255,255,0) 70%);
}

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
}

.section h2,
.article-shell h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.02;
  max-width: 13ch;
}

.lead {
  max-width: 68ch;
  margin: 0;
  font-size: 1rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.feature-card {
  padding: 26px 22px 24px 0;
  min-height: 210px;
}

.feature-card:nth-child(3n) {
  border-right: none;
  padding-right: 0;
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 28px;
  margin-bottom: 16px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
}

.feature-card h3,
.quick-panel h3,
.blog-list-item h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.quick-panel {
  position: relative;
  padding: 28px 28px 28px 0;
}

.quick-panel:last-child {
  border-right: none;
  padding-right: 0;
}

.quick-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 54px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.inline-link,
.blog-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--primary);
  font-weight: 700;
}

.single-column {
  max-width: 860px;
}

.developer-card {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.subhero {
  padding: 46px 0 16px;
}

.subhero-copy {
  max-width: 820px;
}

.subhero-copy h1 {
  margin-top: 16px;
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  line-height: 1;
}

.blog-list-card,
.article-shell {
  padding: 0;
}

.blog-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.blog-list-item {
  padding: 0 0 20px;
  border-bottom: 1px solid var(--line);
}

.article-page {
  padding: 38px 0 72px;
}

.article-shell {
  max-width: 860px;
  margin: 0 auto;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 24px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--bg-muted);
  color: var(--text-soft);
  font-size: 0.88rem;
  font-weight: 600;
}

.article-shell h2 {
  margin: 30px 0 12px;
  font-size: 1.7rem;
  line-height: 1.15;
  max-width: none;
}

.article-shell ul,
.article-shell ol {
  margin: 12px 0 0;
  padding-left: 20px;
}

.article-shell li + li,
.article-shell p + p {
  margin-top: 10px;
}

.footer {
  padding: 28px 0 48px;
  color: var(--text-mute);
}

.footer-inner {
  padding-top: 24px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal-delay-1 {
  transition-delay: 80ms;
}

.reveal-delay-2 {
  transition-delay: 160ms;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

  .reveal,
  .reveal-delay-1,
  .reveal-delay-2,
  .nav-links a,
  .lang-btn,
  .modal-backdrop,
  .btn {
    transition: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1040px) {
  .hero-shell,
  .feature-grid,
  .quick-grid,
  .blog-list,
  .tool-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-shell {
    gap: 28px;
    grid-template-columns: 1fr;
  }

  .tool-layout {
    grid-template-columns: 1fr;
  }

  .feature-card:nth-child(3n) {
    padding-right: 22px;
  }

  .feature-card:nth-child(2n) {
    border-right: none;
    padding-right: 0;
  }

  .quick-panel:nth-child(2n) {
    border-right: none;
    padding-right: 0;
  }

  .quick-panel:last-child {
    padding-right: 28px;
  }

  .section h2,
  .hero h1,
  .article-shell h1 {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .wrap {
    width: min(var(--maxw), calc(100% - 28px));
  }

  .nav-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .nav-links {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .hero-meta,
  .feature-grid,
  .quick-grid,
  .blog-list,
  .tool-layout {
    grid-template-columns: 1fr;
  }

  .sticky-output {
    position: static;
  }

  .feature-card,
  .quick-panel {
    padding-right: 0;
    border-right: none;
  }

  .quick-panel:last-child {
    border-right: none;
    padding-right: 0;
  }

  .section {
    padding: 66px 0;
  }
}