:root {
      --bg: #101218;
      --bg-soft: #171b23;
      --panel: rgba(17, 21, 29, 0.88);
      --panel-strong: rgba(20, 24, 33, 0.96);
      --line: rgba(255, 255, 255, 0.08);
      --line-strong: rgba(255, 184, 0, 0.22);
      --text: #f5f7fb;
      --muted: #a7b1c2;
      --accent: #f7b500;
      --accent-soft: #ffd76b;
      --cyan: #46d5ff;
      --mint: #7bf0cb;
      --danger: #ff8a76;
      --shadow: 0 24px 72px rgba(0, 0, 0, 0.34);
      --radius-xl: 30px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --max: 1220px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--text);
      font-family: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      background:
        radial-gradient(circle at 15% 12%, rgba(247, 181, 0, 0.14), transparent 28%),
        radial-gradient(circle at 82% 18%, rgba(70, 213, 255, 0.14), transparent 26%),
        radial-gradient(circle at 50% 85%, rgba(123, 240, 203, 0.12), transparent 24%),
        linear-gradient(180deg, #0e1015 0%, #101319 48%, #0b0e14 100%);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.66), transparent 92%);
      opacity: 0.55;
    }

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

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

    .container {
      width: min(calc(100% - 32px), var(--max));
      margin: 0 auto;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 30;
      backdrop-filter: blur(18px);
      background: rgba(14, 17, 24, 0.76);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .topbar-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 14px;
      min-width: 0;
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #0d0f14;
      font-weight: 900;
      font-size: 1.15rem;
      background: linear-gradient(135deg, #ffcd39, #46d5ff);
      box-shadow: 0 14px 34px rgba(247, 181, 0, 0.18);
    }

    .brand-copy {
      display: grid;
      gap: 4px;
    }

    .brand-title {
      font-size: 1.02rem;
      font-weight: 800;
      letter-spacing: 0.01em;
    }

    .brand-subtitle {
      color: var(--muted);
      font-size: 0.82rem;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--muted);
      font-size: 0.98rem;
    }

    .nav a {
      min-height: 50px;
      padding: 0 20px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #dbe3ef;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.12);
      transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
      white-space: nowrap;
    }

    .nav a:hover {
      color: var(--text);
      border-color: rgba(255, 255, 255, 0.18);
      background: rgba(255, 255, 255, 0.05);
      transform: translateY(-2px);
    }

    .actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .button,
    .button-ghost {
      min-height: 50px;
      padding: 0 20px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      font-weight: 800;
      transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
      white-space: nowrap;
    }

    .button {
      color: #111319;
      background: linear-gradient(135deg, var(--accent-soft), var(--accent));
      box-shadow: 0 18px 36px rgba(247, 181, 0, 0.24);
    }

    .button-ghost {
      color: var(--text);
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }

    .button:hover,
    .button-ghost:hover {
      transform: translateY(-2px);
    }

    .hero {
      padding: 72px 0 36px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.02fr 1fr;
      gap: 30px;
      align-items: start;
    }

    .hero-copy,
    .hero-stage,
    .panel,
    .cta-band {
      border: 1px solid var(--line);
      background: var(--panel);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
    }

    .hero-copy {
      min-height: 672px;
      border-radius: var(--radius-xl);
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: flex-end;
      background: linear-gradient(180deg, rgba(20, 24, 34, 0.98), rgba(17, 20, 29, 0.96));
    }

    .hero-copy::before {
      content: "";
      position: absolute;
      inset: -18% auto auto -10%;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(247, 181, 0, 0.14), transparent 70%);
      pointer-events: none;
      z-index: 1;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      inset: auto -40px -50px auto;
      width: 210px;
      height: 210px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(70, 213, 255, 0.22), transparent 70%);
      z-index: 1;
    }

    .hero-carousel {
      position: absolute;
      inset: 0;
      z-index: 0;
    }

    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      transform: scale(1.03);
      transition: opacity 520ms ease, transform 520ms ease;
    }

    .hero-slide.is-active {
      opacity: 1;
      transform: scale(1);
    }

    .hero-slide::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(10, 12, 17, 0.18), rgba(10, 12, 17, 0.6) 40%, rgba(10, 12, 17, 0.94)),
        linear-gradient(90deg, rgba(12, 14, 20, 0.82), rgba(12, 14, 20, 0.34) 52%, rgba(12, 14, 20, 0.58));
    }

    .hero-slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center top;
      filter: saturate(1.02);
    }

    .hero-slide-badge {
      position: absolute;
      top: 24px;
      right: 24px;
      z-index: 1;
      padding: 10px 14px;
      border-radius: 999px;
      color: #f6f8fc;
      font-size: 0.84rem;
      font-weight: 700;
      background: rgba(12, 15, 22, 0.58);
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(12px);
    }

    .hero-copy-content {
      position: relative;
      z-index: 2;
      width: 100%;
      padding: 34px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 14px;
      border-radius: 999px;
      border: 1px solid rgba(247, 181, 0, 0.24);
      background: rgba(247, 181, 0, 0.08);
      color: #ffe6a2;
      font-size: 0.92rem;
      margin-bottom: 20px;
    }

    .eyebrow-dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 16px rgba(247, 181, 0, 0.9);
    }

    h1,
    h2,
    h3,
    p {
      margin: 0;
    }

    h1 {
      font-size: clamp(3rem, 5.6vw, 5rem);
      line-height: 0.9;
      letter-spacing: -0.04em;
      max-width: none;
    }

    .hero-highlight {
      color: var(--accent-soft);
    }

    .lead {
      margin-top: 18px;
      font-size: 1.02rem;
      line-height: 1.78;
      color: #d8dfeb;
      max-width: 44ch;
    }

    .hero-points {
      margin-top: 26px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .point {
      padding: 10px 16px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .point strong {
      display: block;
      font-size: 0.92rem;
      color: #e8eef8;
    }

    .hero-actions {
      margin-top: 26px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .hero-note {
      margin-top: 18px;
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.7;
      max-width: 46ch;
    }

    .hero-carousel-nav {
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-carousel-dot {
      min-height: 42px;
      padding: 0 16px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      background: rgba(13, 17, 24, 0.4);
      color: #dce4f0;
      font-size: 0.88rem;
      font-weight: 700;
      cursor: pointer;
      transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
      backdrop-filter: blur(10px);
    }

    .hero-carousel-dot:hover {
      transform: translateY(-1px);
      border-color: rgba(255, 215, 107, 0.34);
    }

    .hero-carousel-dot.is-active {
      color: #111319;
      border-color: rgba(255, 215, 107, 0.18);
      background: linear-gradient(135deg, var(--accent-soft), var(--accent));
      box-shadow: 0 16px 26px rgba(247, 181, 0, 0.22);
    }

    .hero-stage {
      padding: 24px;
      border-radius: var(--radius-xl);
      position: relative;
      overflow: hidden;
      background:
        radial-gradient(circle at 8% 10%, rgba(247, 181, 0, 0.12), transparent 24%),
        radial-gradient(circle at 92% 86%, rgba(70, 213, 255, 0.14), transparent 30%),
        linear-gradient(180deg, rgba(19, 22, 31, 0.98), rgba(12, 15, 23, 0.98));
    }

    .hero-stage::before {
      content: "";
      position: absolute;
      inset: 68px 20px 20px;
      border-radius: 28px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0)),
        linear-gradient(180deg, rgba(15, 17, 24, 0.42), rgba(15, 17, 24, 0));
      border: 1px solid rgba(255, 255, 255, 0.04);
      pointer-events: none;
    }

    .stage-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .meta-pill {
      padding: 8px 12px;
      border-radius: 999px;
      font-size: 0.88rem;
      color: #e9edf5;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
      align-items: stretch;
      position: relative;
      z-index: 1;
    }

    .showcase-card {
      position: relative;
      overflow: hidden;
      border-radius: 24px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      background: #0d1017;
      box-shadow: 0 18px 34px rgba(0, 0, 0, 0.22);
      background:
        linear-gradient(180deg, rgba(14, 17, 25, 0.74), rgba(9, 11, 17, 0.98)),
        #0d1017;
      min-height: 252px;
    }

    .showcase-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center top;
    }

    .showcase-card::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 52%;
      background: linear-gradient(180deg, transparent, rgba(7, 9, 14, 0.88));
      pointer-events: none;
    }

    .showcase-card-copy strong {
      display: block;
      font-size: 1.08rem;
      margin-bottom: 6px;
    }

    .showcase-card-copy span {
      display: block;
      color: rgba(255, 255, 255, 0.76);
      line-height: 1.6;
      font-size: 0.88rem;
    }

    .showcase-card-tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 12px;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 800;
      color: #111319;
      background: linear-gradient(135deg, #8cf5d1, #46d5ff);
      flex-shrink: 0;
      width: fit-content;
      justify-self: start;
    }

    .showcase-card-chat img {
      object-position: center top;
    }

    .showcase-card-feed img {
      object-position: left top;
    }

    .showcase-card-image img {
      object-position: center top;
    }

    .showcase-card-video img {
      object-position: center top;
    }

    .showcase-card-caption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 14px;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: end;
      gap: 12px;
    }

    .stage-foot {
      margin-top: 16px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      position: relative;
      z-index: 1;
    }

    .stage-foot span {
      padding: 8px 12px;
      border-radius: 999px;
      font-size: 0.82rem;
      color: #d9e2ef;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .section {
      padding: 34px 0;
    }

    .section-header {
      display: flex;
      align-items: end;
      justify-content: center;
      gap: 24px;
      margin-bottom: 22px;
      text-align: center;
    }

    .section-header > div {
      margin: 0 auto;
    }

    .section-header h2 {
      max-width: none;
    }

    .section-header p {
      margin: 10px auto 0;
      max-width: 38ch;
    }

    .section-kicker {
      color: var(--accent-soft);
      text-transform: uppercase;
      letter-spacing: 0.2em;
      font-size: 0.78rem;
      margin-bottom: 12px;
    }

    h2 {
      font-size: clamp(1.8rem, 3.2vw, 3rem);
      line-height: 1.08;
      letter-spacing: -0.03em;
      max-width: 13ch;
    }

    .section-header p,
    .section-intro {
      color: var(--muted);
      line-height: 1.8;
      max-width: 62ch;
      font-size: 1rem;
    }

    .mode-grid,
    .workflow-grid,
    .keyword-grid,
    .faq-grid {
      display: grid;
      gap: 16px;
    }

    .mode-grid {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .mode-card,
    .workflow-card,
    .keyword-card {
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
      box-shadow: var(--shadow);
    }

    .mode-card {
      min-height: 100%;
    }

    .mode-badge,
    .workflow-index {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      font-weight: 900;
      margin-bottom: 16px;
      color: #12161d;
      background: linear-gradient(135deg, #ffd970, #52d7ff);
    }

    .mode-card h3,
    .workflow-card h3,
    .keyword-card h3 {
      font-size: 1.16rem;
      margin-bottom: 10px;
    }

    .mode-card p,
    .workflow-card p,
    .keyword-card p {
      color: var(--muted);
      line-height: 1.75;
      font-size: 0.96rem;
    }

    .chip-row {
      margin-top: 14px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .chip {
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 0.8rem;
      color: #dfe6f1;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .chip.highlight {
      color: #141821;
      background: linear-gradient(135deg, #ffd970, #ffe9a4);
      border-color: rgba(255, 217, 112, 0.36);
    }

    .tools-band {
      margin-top: 18px;
      padding: 16px 18px;
      border-radius: 18px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      background: rgba(255, 255, 255, 0.03);
      color: #dbe2ee;
      line-height: 1.8;
      text-align: center;
    }

    .inspiration-grid {
      display: grid;
      grid-template-columns: 0.88fr 1.12fr;
      gap: 20px;
      align-items: stretch;
    }

    .inspiration-copy {
      padding: 28px;
      border-radius: var(--radius-xl);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
      box-shadow: var(--shadow);
    }

    .inspiration-intro {
      color: var(--muted);
      line-height: 1.8;
      font-size: 0.98rem;
      margin-bottom: 18px;
      text-align: center;
    }

    .inspiration-copy .list {
      margin-top: 20px;
      display: grid;
      gap: 14px;
    }

    .list-item {
      padding: 16px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .list-item strong {
      display: block;
      margin-bottom: 8px;
      font-size: 1rem;
    }

    .list-item span {
      color: var(--muted);
      line-height: 1.7;
      font-size: 0.94rem;
    }

    .inspiration-stage {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .panel-shot {
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.08);
      background: #0c0f14;
      box-shadow: var(--shadow);
      min-height: 100%;
    }

    .panel-shot img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center top;
    }

    .workflow-grid {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .workflow-index {
      color: #111319;
      font-size: 0.92rem;
    }

    .keyword-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .faq-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .keyword-card {
      position: relative;
      overflow: hidden;
    }

    .faq-card {
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
      box-shadow: var(--shadow);
    }

    .faq-card h3 {
      font-size: 1.12rem;
      margin-bottom: 10px;
    }

    .faq-card p {
      color: var(--muted);
      line-height: 1.78;
      font-size: 0.96rem;
    }

    .keyword-card::after {
      content: "";
      position: absolute;
      inset: auto -30px -34px auto;
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(70, 213, 255, 0.12), transparent 70%);
      pointer-events: none;
    }

    .keyword-title {
      font-size: 0.88rem;
      color: var(--accent-soft);
      letter-spacing: 0.12em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .cta-band {
      margin-top: 34px;
      padding: 26px;
      border-radius: var(--radius-xl);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 24px;
      align-items: center;
      text-align: center;
    }

    .cta-band h2 {
      max-width: none;
    }

    .cta-box {
      padding: 20px;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .cta-box p + p {
      margin-top: 10px;
    }

    footer {
      padding: 24px 0 40px;
      color: var(--muted);
      font-size: 0.92rem;
    }

    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 520ms ease, transform 520ms ease;
    }

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

    @media (max-width: 1100px) {
      .hero-grid,
      .inspiration-grid,
      .cta-band {
        grid-template-columns: 1fr;
      }

      .mode-grid,
      .workflow-grid,
      .keyword-grid,
      .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 840px) {
      .topbar-inner {
        min-height: auto;
        padding: 16px 0;
        flex-wrap: wrap;
      }

      .nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
        gap: 8px;
      }

      .nav a {
        min-height: 44px;
        padding: 0 16px;
        font-size: 0.92rem;
      }

      .hero {
        padding-top: 42px;
      }

      .hero-stage,
      .inspiration-copy,
      .cta-band {
        padding: 22px;
      }

      .hero-copy {
        min-height: 620px;
      }

      .hero-copy-content {
        padding: 22px;
      }

      .hero-points,
      .mode-grid,
      .workflow-grid,
      .keyword-grid,
      .faq-grid,
      .inspiration-stage {
        grid-template-columns: 1fr;
      }

      .showcase-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
      }
    }

    @media (max-width: 560px) {
      .container {
        width: min(calc(100% - 24px), var(--max));
      }

      h1 {
        font-size: 1.86rem;
        line-height: 1.02;
        max-width: none;
      }

      h2 {
        font-size: 1.56rem;
        line-height: 1.12;
        max-width: 10ch;
      }

      .actions {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .button,
      .button-ghost {
        width: auto;
        min-height: 48px;
        padding: 0 14px;
        font-size: 0.96rem;
      }

      .hero-actions {
        display: grid;
      }

      .hero-copy {
        min-height: 580px;
      }

      .hero-slide-badge {
        top: 14px;
        right: 14px;
        padding: 8px 12px;
        font-size: 0.78rem;
      }

      .hero-copy-content {
        padding: 22px;
      }

      .hero-carousel-nav {
        gap: 8px;
      }

      .hero-carousel-dot {
        min-height: 36px;
        padding: 0 12px;
        font-size: 0.82rem;
      }

      .showcase-card {
        min-height: 198px;
      }

      .showcase-card-caption {
        left: 12px;
        right: 12px;
        bottom: 12px;
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .showcase-card-copy strong {
        font-size: 1.04rem;
      }

      .showcase-card-copy span {
        font-size: 0.84rem;
        line-height: 1.5;
      }

      .section-header p,
      .section-intro {
        max-width: 26ch;
      }
    }