:root {
      --mint: #24dc9d;
      --mint-deep: #0f9f72;
      --mint-soft: #c8f5e9;
      --teal: #52b89a;
      --ink: #14201c;
      --ink-soft: #3f4945;
      --fog: #f3faf7;
      --paper: #ffffff;
      --line: rgba(20, 32, 28, 0.08);
      --coral: #ff6b6b;
      --sun: #ffe66d;
      --radius: 18px;
      --max: 1080px;
      --font-display: "Rubik", "Heebo", "DM Sans", sans-serif;
      --font-body: "Heebo", "DM Sans", sans-serif;
    }
    html[dir="ltr"] {
      --font-display: "DM Sans", "Rubik", sans-serif;
      --font-body: "DM Sans", "Heebo", sans-serif;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      font-family: var(--font-body);
      font-size: 18px;
      line-height: 1.65;
      background:
        radial-gradient(900px 520px at 85% -5%, rgba(36, 220, 157, 0.28), transparent 55%),
        radial-gradient(700px 480px at 0% 18%, rgba(125, 212, 193, 0.22), transparent 50%),
        linear-gradient(180deg, #f7fffb 0%, var(--fog) 42%, #eef8f3 100%);
      overflow-x: hidden;
    }

    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; }
    .wrap {
      width: min(100% - 40px, var(--max));
      margin-inline: auto;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      backdrop-filter: blur(14px);
      background: rgba(247, 255, 251, 0.82);
      border-bottom: 1px solid transparent;
      transition: border-color 0.25s ease, background 0.25s ease;
    }
    .topbar.is-scrolled { border-bottom-color: var(--line); }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      gap: 16px;
    }
    .topbar-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 1.15rem;
      letter-spacing: -0.02em;
    }
    .brand img {
      width: 40px;
      height: 40px;
      border-radius: 12px;
    }
    .topbar .btn { padding: 10px 16px; font-size: 0.95rem; }

    .lang-switch {
      display: inline-flex;
      align-items: center;
      padding: 4px;
      border-radius: 12px;
      border: 1.5px solid rgba(20, 32, 28, 0.14);
      background: rgba(255, 255, 255, 0.7);
      gap: 2px;
    }
    .lang-switch button,
    .lang-switch a.lang-btn {
      appearance: none;
      border: none;
      background: transparent;
      color: var(--ink-soft);
      font-family: var(--font-body);
      font-weight: 700;
      font-size: 0.85rem;
      padding: 8px 10px;
      border-radius: 9px;
      cursor: pointer;
      line-height: 1;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .lang-switch button.is-active,
    .lang-switch a.lang-btn.is-active {
      background: var(--mint);
      color: #053528;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 22px;
      border-radius: 14px;
      border: none;
      text-decoration: none;
      font-family: var(--font-body);
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn-primary {
      background: var(--mint);
      color: #053528;
      box-shadow: 0 10px 28px rgba(36, 220, 157, 0.35);
    }
    .btn-primary:hover { background: #1fc98e; }
    .btn-ghost {
      background: transparent;
      color: var(--ink);
      border: 1.5px solid rgba(20, 32, 28, 0.16);
    }
    .btn-ghost:hover { border-color: var(--mint-deep); color: var(--mint-deep); }
    .cta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .hero {
      position: relative;
      display: grid;
      align-items: end;
      padding: 28px 0 56px;
      isolation: isolate;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0 -20vw auto auto;
      width: min(70vw, 720px);
      height: min(70vw, 720px);
      background:
        radial-gradient(circle at 40% 40%, rgba(36, 220, 157, 0.35), transparent 62%),
        radial-gradient(circle at 70% 60%, rgba(255, 230, 109, 0.28), transparent 55%);
      z-index: -1;
      animation: glowDrift 10s ease-in-out infinite alternate;
    }
    html[dir="ltr"] .hero::before {
      inset: 0 auto auto -20vw;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 28px 48px;
      align-items: center;
    }
    .hero-copy { max-width: 560px; }
    .brand-hero {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
      text-decoration: none;
    }
    .brand-hero img {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      animation: popIn 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) both;
    }
    .brand-hero span {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: clamp(2rem, 5vw, 3.1rem);
      letter-spacing: -0.03em;
      line-height: 1;
    }
    .hero h1 {
      margin: 0 0 14px;
      font-family: var(--font-display);
      font-weight: 800;
      font-size: clamp(1.7rem, 4.2vw, 2.55rem);
      line-height: 1.18;
      letter-spacing: -0.02em;
      max-width: 16ch;
      animation: riseIn 0.75s 0.08s cubic-bezier(0.2, 0.8, 0.2, 1) both;
    }
    html[lang="en"] .hero h1 { max-width: 18ch; }
    .hero .lede {
      margin: 0 0 26px;
      color: var(--ink-soft);
      font-size: 1.12rem;
      max-width: 36ch;
      animation: riseIn 0.75s 0.16s cubic-bezier(0.2, 0.8, 0.2, 1) both;
    }
    .hero .cta-row { animation: riseIn 0.75s 0.24s cubic-bezier(0.2, 0.8, 0.2, 1) both; }
    .hero-visual {
      position: relative;
      display: grid;
      place-items: center;
      min-height: 280px;
    }
    .hero-visual .orb {
      position: absolute;
      width: min(88%, 300px);
      aspect-ratio: 1;
      border-radius: 50%;
      background:
        conic-gradient(from 210deg, rgba(36, 220, 157, 0.18), rgba(255, 230, 109, 0.22), rgba(82, 184, 154, 0.12), rgba(36, 220, 157, 0.18));
      filter: blur(2px);
      z-index: 0;
    }
    .hero-visual img.mascot {
      position: relative;
      z-index: 1;
      width: min(56%, 220px);
      height: auto;
      aspect-ratio: 1;
      border-radius: 22%;
      animation: floatY 4.8s ease-in-out infinite;
      filter: drop-shadow(0 24px 40px rgba(15, 159, 114, 0.18));
    }
    .hero .store-row {
      margin-top: 14px;
      animation: riseIn 0.75s 0.3s cubic-bezier(0.2, 0.8, 0.2, 1) both;
    }
    .hero .store-link {
      background: rgba(255, 255, 255, 0.88);
      border: 1px solid rgba(20, 32, 28, 0.1);
      color: var(--ink);
    }

    #sm-top,
    #sm-problem,
    #sm-what,
    #sm-effects,
    #sm-how,
    #sm-why,
    #sm-trust,
    #sm-download {
      scroll-margin-top: 88px;
    }

    section { padding: 40px 0; }
    .section-kicker {
      display: inline-block;
      margin-bottom: 10px;
      color: var(--mint-deep);
      font-weight: 700;
      font-size: 0.92rem;
      letter-spacing: 0.04em;
    }
    h2 {
      margin: 0 0 14px;
      font-family: var(--font-display);
      font-weight: 800;
      font-size: clamp(1.55rem, 3.4vw, 2.2rem);
      line-height: 1.2;
      letter-spacing: -0.02em;
    }
    .section-lead {
      margin: 0 0 36px;
      color: var(--ink-soft);
      max-width: 46ch;
      font-size: 1.05rem;
    }

    .problem {
      background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.55) 18%, rgba(255, 255, 255, 0.7));
    }
    .problem-list {
      display: grid;
      gap: 18px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .problem-list li {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      align-items: start;
      padding: 8px 0;
      border-bottom: 1px solid var(--line);
      opacity: 0;
      transform: translateY(18px);
    }
    .problem-list li.is-in { opacity: 1; transform: none; transition: opacity 0.55s ease, transform 0.55s ease; }
    .problem-list .mark {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: rgba(255, 107, 107, 0.12);
      color: var(--coral);
      display: grid;
      place-items: center;
      font-weight: 800;
      font-size: 0.95rem;
      flex-shrink: 0;
    }
    .problem-list strong {
      display: block;
      font-family: var(--font-display);
      font-size: 1.08rem;
      margin-bottom: 2px;
    }
    .problem-list span { color: var(--ink-soft); font-size: 0.98rem; }

    .concept-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .concept-highlight {
      padding: 28px 0;
      border-top: 3px solid var(--mint);
      border-bottom: 3px solid var(--mint);
    }
    .concept-highlight p {
      margin: 0;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: clamp(1.35rem, 3vw, 1.85rem);
      line-height: 1.35;
      letter-spacing: -0.015em;
    }
    .chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }
    .chip {
      padding: 8px 14px;
      border-radius: 12px;
      background: var(--mint-soft);
      color: #004d3d;
      font-weight: 600;
      font-size: 0.95rem;
    }

    .effects-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      column-gap: 40px;
      row-gap: 0;
      margin: 0;
      padding: 0;
      list-style: none;
      border-top: 1px solid var(--line);
    }
    .effects-grid li {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 22px 0;
      border-bottom: 1px solid var(--line);
      opacity: 0;
      transform: translateY(18px);
    }
    .effects-grid li:nth-child(odd) {
      border-inline-end: 1px solid var(--line);
      padding-inline-end: 28px;
    }
    .effects-grid li.is-in {
      opacity: 1;
      transform: none;
      transition: opacity 0.55s ease, transform 0.55s ease;
    }
    .effects-grid .effect-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: linear-gradient(145deg, var(--mint-soft), rgba(255, 230, 109, 0.35));
      color: var(--mint-deep);
      flex: 0 0 42px;
    }
    .effects-grid .effect-mark svg {
      width: 20px;
      height: 20px;
    }
    .effects-grid p {
      margin: 0;
      flex: 1 1 auto;
      min-width: 0;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 1.12rem;
      line-height: 1.35;
      letter-spacing: -0.01em;
      text-align: start;
    }

    .steps {
      counter-reset: step;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .steps li {
      position: relative;
      padding-top: 8px;
      opacity: 0;
      transform: translateY(20px);
    }
    .steps li.is-in {
      opacity: 1;
      transform: none;
      transition: opacity 0.55s ease, transform 0.55s ease;
    }
    .steps li::before {
      counter-increment: step;
      content: counter(step);
      display: inline-grid;
      place-items: center;
      width: 42px;
      height: 42px;
      margin-bottom: 14px;
      border-radius: 50%;
      background: var(--ink);
      color: var(--mint);
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 1.05rem;
    }
    .steps h3 {
      margin: 0 0 8px;
      font-family: var(--font-display);
      font-size: 1.2rem;
    }
    .steps p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

    .benefits-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px 40px;
    }
    .benefit h3 {
      margin: 0 0 8px;
      font-family: var(--font-display);
      font-size: 1.18rem;
    }
    .benefit p { margin: 0; color: var(--ink-soft); }
    .benefit .icon {
      width: 44px;
      height: 44px;
      margin-bottom: 12px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: linear-gradient(145deg, var(--mint-soft), rgba(255, 230, 109, 0.45));
      font-size: 1.25rem;
    }

    .trust {
      text-align: center;
      padding-block: 56px;
    }
    .trust-quote {
      margin: 0 auto 12px;
      max-width: 32ch;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: clamp(1.35rem, 3vw, 1.85rem);
      line-height: 1.35;
    }
    .trust p {
      margin: 0 auto;
      color: var(--ink-soft);
      max-width: 42ch;
    }

    .finale { padding-bottom: 96px; }
    .finale-inner {
      position: relative;
      overflow: hidden;
      padding: 48px 36px;
      border-radius: 28px;
      background:
        linear-gradient(135deg, rgba(36, 220, 157, 0.95), rgba(15, 159, 114, 0.92)),
        radial-gradient(500px 280px at 100% 0%, rgba(255, 230, 109, 0.45), transparent 60%);
      color: #04281d;
    }
    .finale-inner::after {
      content: "";
      position: absolute;
      inset: auto -40px -60px auto;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.12);
      pointer-events: none;
    }
    .finale h2 { color: #04281d; max-width: 18ch; }
    .finale .section-lead { color: rgba(4, 40, 29, 0.82); margin-bottom: 24px; }
    .finale .btn-primary {
      background: var(--ink);
      color: var(--mint);
      box-shadow: none;
    }
    .finale .btn-primary:hover { background: #0c1613; }
    .store-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 18px;
    }
    .store-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 16px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.72);
      text-decoration: none;
      font-weight: 700;
      font-size: 0.95rem;
      transition: transform 0.2s ease, background 0.2s ease;
    }
    .store-link:hover {
      transform: translateY(-2px);
      background: #fff;
    }
    .store-link svg { width: 22px; height: 22px; flex-shrink: 0; }

    footer {
      padding: 28px 0 40px;
      border-top: 1px solid var(--line);
      color: var(--ink-soft);
      font-size: 0.9rem;
    }
    .footer-inner {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 24px;
      justify-content: space-between;
      align-items: center;
    }
    footer a { text-decoration: underline; text-underline-offset: 3px; }

    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-12px); }
    }
    @keyframes glowDrift {
      from { transform: translate(0, 0) scale(1); }
      to { transform: translate(-24px, 18px) scale(1.05); }
    }
    @keyframes riseIn {
      from { opacity: 0; transform: translateY(22px); }
      to { opacity: 1; transform: none; }
    }
    @keyframes popIn {
      from { opacity: 0; transform: scale(0.86); }
      to { opacity: 1; transform: none; }
    }
    .reveal {
      opacity: 0;
      transform: translateY(22px);
    }
    .reveal.is-in {
      opacity: 1;
      transform: none;
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    @media (max-width: 860px) {
      .hero-grid,
      .concept-panel,
      .steps,
      .benefits-grid,
      .effects-grid { grid-template-columns: 1fr; }
      .effects-grid { column-gap: 0; }
      html[dir="rtl"] .effects-grid li:nth-child(odd),
      html[dir="ltr"] .effects-grid li:nth-child(odd) {
        border-inline-end: none;
        padding-inline-end: 0;
      }
      .effects-grid li {
        padding-inline: 0;
      }
      .hero {
        min-height: auto;
        padding-top: 18px;
        align-items: start;
      }
      .hero h1 { max-width: none; }
      .hero-visual { order: -1; min-height: 220px; }
      .hero-visual img.mascot { width: min(48%, 180px); }
      .topbar .btn-label-full { display: none; }
      section { padding: 40px 0; }
      .finale-inner { padding: 36px 22px; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
      }
      .reveal, .problem-list li, .steps li, .effects-grid li {
        opacity: 1 !important;
        transform: none !important;
      }
    }