/* Website colors follow the LF desktop workbench dark-blue palette. */
:root {
  color-scheme: dark;
  --bg: #070b16;
  --bg2: #0a1020;
  --panel: rgba(15, 24, 45, .82);
  --line: rgba(142, 165, 215, .14);
  --text: #eaf0ff;
  --muted: #91a0bc;
  --purple: #5a91ff;
  --blue: #3a9bff;
  --gold: #5a91ff;
  --green: #32d74b;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
}
html { scroll-padding-top: 92px; }
body {
  background:
    radial-gradient(ellipse at 78% 10%, rgba(43, 94, 190, .16), transparent 38%),
    radial-gradient(ellipse at 8% 48%, rgba(37, 70, 140, .12), transparent 34%),
    var(--bg);
  color: var(--text);
}
#starfield { opacity: .64; }
.ambient-one { background: #2866d6; opacity: .11; }
.ambient-two { background: #465eb4; opacity: .13; }
.wrap { width: min(1200px, calc(100% - 72px)); }
.topbar {
  position: sticky;
  top: 0;
  z-index: 8;
  width: min(1320px, calc(100% - 72px));
  height: 76px;
  background: rgba(11, 14, 20, .84);
  backdrop-filter: blur(18px);
  border-bottom-color: rgba(142, 165, 215, .12);
}
.brand { letter-spacing: 0; }
.brand img { border-radius: 9px; }
.topbar nav { color: #aab6ce; gap: 36px; }
.topbar nav a:hover, .footer > a:hover { color: #dce9ff; }
.nav-download {
  border-radius: 9px;
  padding: 10px 17px;
  color: #eef1f5;
  background: rgba(50, 60, 78, .68);
  border-color: rgba(120, 168, 255, .26);
}
.nav-download span { color: #77bcff; }
.hero {
  min-height: 710px;
  grid-template-columns: .9fr 1.1fr;
  padding-top: 36px;
  padding-bottom: 84px;
}
.eyebrow { color: #9caed0; letter-spacing: .15em; }
.status-dot { background: #32d74b; box-shadow: 0 0 14px rgba(50, 215, 75, .48); }
.hero h1 {
  font-size: clamp(48px, 5.5vw, 74px);
  line-height: 1.14;
  letter-spacing: -.06em;
}
.hero h1 span {
  color: #a7b8dc;
  background: linear-gradient(100deg, #dce9ff, #82b2ff 56%, #5a91ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-lead { color: #aab6ce; font-size: 15px; max-width: 460px; }
.hero-actions { gap: 13px; margin-top: 32px; }
.button { min-height: 51px; border-radius: 9px; padding-inline: 21px; }
.button.primary {
  color: #fff;
  background: linear-gradient(120deg, #5a91ff, #3478ed);
  box-shadow: 0 8px 24px rgba(50, 104, 211, .28);
}
.button.primary:hover { box-shadow: 0 10px 28px rgba(50, 104, 211, .38); }
.button.secondary {
  color: #d9e2f4;
  border-color: rgba(142, 165, 215, .22);
  background: rgba(25, 36, 61, .54);
}
.hero-note { color: #75839d; }
.hero-note b { color: #bac7df; }
.hero-art { height: 510px; }
.art-glow {
  background: radial-gradient(ellipse, rgba(65, 111, 206, .25), rgba(49, 68, 145, .12) 52%, transparent 76%);
}
.mock-window {
  background: rgba(10, 16, 32, .97);
  border-color: rgba(120, 168, 255, .27);
  box-shadow: 0 34px 100px rgba(0, 0, 0, .48), 0 0 64px rgba(55, 105, 200, .13);
}
.mock-logo { color: #a9c9ff; border-color: rgba(120, 168, 255, .34); background: rgba(90, 145, 255, .14); }
.mock-nav.active { background: rgba(90, 145, 255, .16); color: #e5edff; }
.mock-save b { background: #32d74b; }
.mock-tag { color: #c2cde2; }
.mock-metrics div { background: rgba(90, 145, 255, .055); }
.segment { background: rgba(26, 38, 64, .38); }
.segment-num { color: #9dbcf2; }
.segment em.done { color: #32d74b; }
.floating-card {
  border-color: rgba(142, 165, 215, .2);
  background: rgba(15, 24, 45, .94);
  box-shadow: 0 15px 42px rgba(0, 0, 0, .32);
}
.float-icon.violet { color: #9cbcff; background: rgba(90, 145, 255, .14); }
.float-icon.blue { color: #77bcff; background: rgba(58, 155, 255, .13); }
.hero-bottom { color: #8392ae; }
.hero-bottom-line { background: linear-gradient(90deg, rgba(90, 145, 255, .52), rgba(90, 145, 255, .08)); }
.section { padding-top: 102px; padding-bottom: 106px; }
.section-head { margin-bottom: 34px; }
.section-head h2, .guide-head h2 {
  font-size: clamp(30px, 3.3vw, 42px);
  letter-spacing: -.05em;
}
.section-head p { color: #9caac5; }
.feature-grid { gap: 15px; }
.feature-card {
  min-height: 264px;
  padding: 27px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(27, 33, 46, .84), rgba(15, 24, 45, .9));
  border-color: rgba(142, 165, 215, .16);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .16);
}
.feature-card:hover {
  border-color: rgba(120, 168, 255, .5);
  background: linear-gradient(145deg, rgba(34, 47, 70, .94), rgba(16, 27, 51, .94));
  transform: translateY(-3px);
}
.feature-card h3 { font-size: 18px; letter-spacing: -.02em; }
.feature-card p { color: #a3b0c8; line-height: 1.85; }
.feature-number { color: #7e8eaa; }
.feature-icon.violet, .feature-icon.blue, .feature-icon.gold, .feature-icon.green {
  color: #a9c9ff;
  background: rgba(90, 145, 255, .11);
}
.script-visual {
  border-radius: 10px;
  background: linear-gradient(110deg, rgba(90, 145, 255, .1), rgba(58, 155, 255, .04));
  border-color: rgba(120, 168, 255, .16);
}
.script-visual span, .asset-pills b { color: #9dbcf2; }
.asset-pills span, .flow-visual span {
  border-color: rgba(142, 165, 215, .18);
  background: rgba(25, 36, 61, .42);
  color: #cbd6eb;
}
.flow-visual i { color: #77bcff; }
.guide-band {
  background: linear-gradient(180deg, rgba(15, 24, 45, .72), rgba(7, 11, 22, .96));
  border-top-color: rgba(142, 165, 215, .12);
  border-bottom-color: rgba(142, 165, 215, .12);
}
.guide-inner { padding-top: 94px; padding-bottom: 98px; }
.guide-head p, .step-text p { color: #9caac5; }
.guide-list { border-top-color: rgba(142, 165, 215, .16); }
.guide-step { border-bottom-color: rgba(142, 165, 215, .16); }
.step-index { color: #8fb4f4; }
.step-icon { color: #9cbcff; border-color: rgba(120, 168, 255, .24); background: rgba(90, 145, 255, .1); }
.step-text h3 { color: #e5ebf7; }
.step-arrow { color: #9caac5; }
.guide-tip { border-color: rgba(120, 168, 255, .2); background: rgba(90, 145, 255, .06); }
.guide-tip > span { color: #77bcff; }
.guide-tip p { color: #aab6ce; }
.guide-tip b { color: #dce9ff; }
.download-section { padding-top: 94px; padding-bottom: 76px; }
.download-panel {
  min-height: 300px;
  padding: 46px 54px;
  border-radius: 16px;
  border-color: rgba(120, 168, 255, .22);
  background:
    radial-gradient(ellipse at 78% 5%, rgba(57, 104, 194, .16), transparent 40%),
    linear-gradient(112deg, #151e31, #10192b 54%, #151b31);
}
.download-copy h2 { font-size: clamp(30px, 3.1vw, 40px); }
.download-copy > p { color: #aab6ce; font-size: 12px; }
.download-meta { color: #91a0bc; font-size: 10px; }
.download-button { width: 228px; }
.download-action small { color: #94a1b8; font-size: 10px; }
.download-orbit { border-color: rgba(120, 168, 255, .14); }
.orbit-b { border-color: rgba(90, 145, 255, .17); }
.download-spark { color: #9cbcff; }
.download-note { color: #91a0bc; }
.download-note p { font-size: 10px; }
.footer { color: #8795ad; min-height: 90px; border-top-color: rgba(142, 165, 215, .12); }
.footer-brand { color: #d0daee; }
.footer small { color: #74829a; }

@media (max-width: 900px) {
  .wrap { width: min(calc(100% - 56px), 760px); }
  .topbar { width: calc(100% - 56px); }
  .hero { grid-template-columns: 1fr; padding-top: 66px; }
  .hero-copy { max-width: 680px; }
  .hero-art { height: 450px; margin-top: 12px; }
  .mock-window { width: min(620px, 94%); }
  .section { padding-top: 78px; padding-bottom: 82px; }
  .guide-inner { padding-top: 76px; padding-bottom: 78px; }
}
@media (max-width: 600px) {
  .wrap { width: calc(100% - 36px); }
  .topbar { width: calc(100% - 36px); height: 66px; }
  .topbar .nav-download { display: none; }
  .hero { padding-top: 55px; padding-bottom: 66px; }
  .hero-copy { min-width: 0; }
  .hero h1 { font-size: clamp(35px, 9vw, 46px); }
  .hero-lead { max-width: 310px; font-size: 12px; }
  .hero-actions { gap: 8px; }
  .button { min-height: 46px; padding-inline: 14px; font-size: 11px; }
  .hero-art { height: 320px; margin: 10px -12px 0; }
  .mock-window { width: 280px; max-width: 100%; min-width: 0; flex: 0 1 280px; transform: none; }
  .floating-card { display: none; }
  .section { padding-top: 62px; padding-bottom: 64px; }
  .section-head h2, .guide-head h2 { font-size: 27px; }
  .feature-card, .feature-card.feature-large { border-radius: 12px; padding: 19px; }
  .guide-inner { padding-top: 61px; padding-bottom: 60px; }
  .download-section { padding-top: 60px; padding-bottom: 46px; }
  .download-panel { border-radius: 14px; padding: 28px 21px; }
  .download-copy h2 { font-size: 27px; }
  .download-button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* Full-bleed navigation keeps the header connected to the page backdrop. */
.topbar {
  width: 100%;
  max-width: none;
  margin: 0;
  padding-inline: max(calc((100vw - 1320px) / 2), 36px);
  border-radius: 0;
  background: rgba(7, 11, 22, .34);
  border-color: rgba(142, 165, 215, .09);
  backdrop-filter: saturate(135%) blur(16px);
}
@media (max-width: 900px) {
  .topbar { padding-inline: 28px; }
}
@media (max-width: 600px) {
  .topbar { padding-inline: 18px; }
}

.topbar {
  background: rgba(7, 11, 22, .08);
  border-bottom-color: transparent;
  backdrop-filter: blur(12px);
}

/* Real desktop UI previews replace the illustrative hero mockup. */
.real-ui-gallery { height: auto; min-height: 0; align-self: center; display: flex; flex-direction: column; justify-content: center; gap: 12px; padding: 14px; border: 1px solid rgba(120, 168, 255, .2); border-radius: 15px; background: rgba(7, 13, 27, .78); box-shadow: 0 28px 70px rgba(0, 0, 0, .34), 0 0 55px rgba(55, 105, 200, .1); overflow: hidden; }
.real-ui-gallery .art-glow { inset: 0; opacity: .48; pointer-events: none; }
.real-ui-main { position: relative; z-index: 1; display: block; width: 100%; overflow: hidden; border: 1px solid rgba(142, 165, 215, .22); border-radius: 9px; background: #070b16; line-height: 0; }
.real-ui-main img { display: block; width: 100%; height: auto; aspect-ratio: 1.84; object-fit: contain; transition: opacity .18s ease; }
.real-ui-caption { position: relative; z-index: 1; display: flex; align-items: center; gap: 8px; min-height: 20px; padding-left: 2px; color: #b8c7e2; font-size: 12px; }
.real-ui-caption .status-dot { width: 7px; height: 7px; }
.real-ui-switcher { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.screen-choice { min-width: 0; display: grid; grid-template-columns: 72px minmax(0, 1fr); align-items: center; gap: 9px; padding: 6px; border: 1px solid rgba(142, 165, 215, .16); border-radius: 8px; color: #aebbd2; background: rgba(17, 27, 48, .78); text-align: left; cursor: pointer; transition: border-color .18s ease, background .18s ease, color .18s ease; }
.screen-choice:hover, .screen-choice.active { border-color: rgba(90, 145, 255, .64); color: #e5edff; background: rgba(43, 76, 137, .3); }
.screen-choice:focus-visible { outline: 2px solid #5a91ff; outline-offset: 2px; }
.screen-choice img { width: 72px; height: 43px; object-fit: cover; object-position: center; border: 1px solid rgba(142, 165, 215, .14); border-radius: 4px; background: #070b16; }
.screen-choice span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 11px; }
@media (max-width: 900px) { .hero-art.real-ui-gallery { width: min(760px, 100%); height: auto; margin: 0 auto; } }
@media (max-width: 600px) {
  .hero-art.real-ui-gallery { height: auto; margin: 0 -7px; padding: 9px; gap: 9px; }
  .real-ui-main img { aspect-ratio: 1.55; object-fit: contain; }
  .real-ui-switcher { gap: 6px; }
  .screen-choice { grid-template-columns: 1fr; justify-items: center; gap: 4px; padding: 5px 3px; text-align: center; }
  .screen-choice img { width: 100%; height: auto; aspect-ratio: 1.55; object-fit: cover; }
  .screen-choice span { font-size: 10px; }
}
@media (max-width: 600px) {
  .hero-art.real-ui-gallery {
    width: min(calc(100% + 14px), calc(100vw - 22px));
    max-width: calc(100vw - 22px);
    min-width: 0;
  }
}
@media (max-width: 600px) {
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero-art.real-ui-gallery {
    width: calc(100vw - 36px);
    max-width: calc(100vw - 36px);
    margin: 0 auto;
  }
}
/* Contact card sits directly under the download action. */
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: center;
  gap: 30px;
  margin-top: 18px;
  padding: 26px 34px;
  border: 1px solid rgba(120, 168, 255, .17);
  border-radius: 15px;
  background: linear-gradient(125deg, rgba(15, 24, 45, .84), rgba(10, 16, 32, .92));
}
.contact-copy .eyebrow { color: #8ea6d2; font-size: 10px; }
.contact-copy h2 { margin: 8px 0 7px; color: #eaf0ff; font-size: 23px; letter-spacing: -.03em; }
.contact-copy p { max-width: 480px; margin: 0; color: #aab6ce; font-size: 13px; line-height: 1.8; }
.contact-wechat-id {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 16px;
  padding: 7px 12px;
  border: 1px solid rgba(120, 168, 255, .2);
  border-radius: 8px;
  background: rgba(90, 145, 255, .08);
}
.contact-wechat-id span { color: #91a0bc; font-size: 12px; }
.contact-wechat-id strong { color: #c7d9ff; font-size: 15px; letter-spacing: .04em; }
.contact-qr-card {
  width: 220px;
  margin: 0;
  padding: 10px 10px 8px;
  border: 1px solid rgba(142, 165, 215, .18);
  border-radius: 12px;
  background: #f8f9fb;
  text-align: center;
}
.contact-qr-card img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; }
.contact-qr-card figcaption { padding-top: 6px; color: #374151; font-size: 11px; line-height: 1.4; }
@media (max-width: 600px) {
  .contact-panel { grid-template-columns: 1fr; gap: 18px; margin-top: 14px; padding: 22px 18px; text-align: center; }
  .contact-copy p { margin-inline: auto; }
  .contact-wechat-id { margin-top: 12px; }
  .contact-qr-card { width: min(220px, 100%); justify-self: center; }
}
/* Direct-download actions stay prominent while using the workbench blue. */
.button.primary.download-button {
  width: min(100%, 276px);
  min-height: 62px;
  justify-content: center;
  border: 1px solid rgba(214, 229, 255, .72);
  color: #fff;
  background: linear-gradient(135deg, #68a3ff, #3478ed);
  box-shadow: 0 10px 28px rgba(52, 120, 237, .4), 0 0 0 4px rgba(90, 145, 255, .12);
  font-size: 16px;
  font-weight: 750;
  letter-spacing: .01em;
}
.button.primary.download-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(52, 120, 237, .5), 0 0 0 5px rgba(90, 145, 255, .15);
}
/* ==== 教程视频播放器 ==== */
.video-block {
  margin: 0 0 44px;
  border: 1px solid rgba(142, 165, 215, .16);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(15, 24, 45, .82);
  box-shadow: 0 24px 60px rgba(3, 8, 20, .5);
}
.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #04070f;
}
.video-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #04070f;
}
.video-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(142, 165, 215, .1);
}
.video-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 22px;
  border-top: 1px solid rgba(142, 165, 215, .12);
}
.video-bar h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .02em;
}
.video-bar p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}
.video-hint {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px solid rgba(142, 165, 215, .18);
  border-radius: 999px;
}
@media (max-width: 720px) {
  .video-block { margin-bottom: 32px; border-radius: 14px; }
  .video-bar { flex-direction: column; align-items: flex-start; padding: 14px 16px; }
}

/* Three direct actions in the first screen. */
.hero-actions { display: flex; align-items: center; gap: 10px; flex-wrap: nowrap; }
.hero-actions .button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-width: 0; padding-inline: 15px; white-space: nowrap; font-size: 12px; }
.hero-actions .purchase-action { border-color: rgba(90, 145, 255, .38); background: rgba(40, 69, 121, .42); }
.hero-actions .purchase-action:hover { border-color: rgba(112, 164, 255, .72); background: rgba(48, 83, 145, .56); }
@media (max-width: 600px) {
  .hero-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
  .hero-actions .button { min-height: 44px; padding-inline: 5px; gap: 4px; font-size: 10px; }
  .hero-actions .button span { font-size: 11px; }
}