* {
      box-sizing: border-box;
    }

    :root {
      --ink: #34495e;
      --sub: #6f8da5;
      --sky-1: #7ed6ff;
      --sky-2: #c4f1ff;
      --sky-3: #fff3d7;
      --pink: #ff8cc6;
      --yellow: #ffe66d;
      --mint: #8ff5d2;
      --blue: #5bbcff;
      --purple: #b79cff;
      --white: rgba(255, 255, 255, 0.86);
      --line: rgba(255, 255, 255, 0.68);
      --shadow: 0 18px 48px rgba(62, 133, 180, 0.20);
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: "Hiragino Maru Gothic ProN", "Yu Gothic", "YuGothic", sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 15% 18%, rgba(255, 255, 255, .72) 0 9%, transparent 10%),
        radial-gradient(circle at 85% 12%, rgba(255, 230, 109, .55) 0 8%, transparent 9%),
        radial-gradient(circle at 78% 82%, rgba(255, 140, 198, .20) 0 14%, transparent 15%),
        linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 52%, var(--sky-3) 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        radial-gradient(circle, rgba(255,255,255,.65) 0 2px, transparent 3px),
        radial-gradient(circle, rgba(255,255,255,.45) 0 1.5px, transparent 2.5px);
      background-size: 90px 90px, 130px 130px;
      background-position: 20px 30px, 60px 70px;
      opacity: .45;
      z-index: 0;
    }

    .floating-decoration {
      position: fixed;
      border-radius: 999px;
      opacity: .85;
      filter: blur(.2px);
      pointer-events: none;
      z-index: 0;
      animation: drift 9s ease-in-out infinite;
    }

    .deco-1 {
      width: 90px;
      height: 90px;
      left: 7%;
      top: 18%;
      background: rgba(255, 140, 198, .36);
    }

    .deco-2 {
      width: 54px;
      height: 54px;
      right: 10%;
      top: 35%;
      background: rgba(143, 245, 210, .52);
      animation-delay: 1.3s;
    }

    .deco-3 {
      width: 70px;
      height: 70px;
      left: 16%;
      bottom: 12%;
      background: rgba(183, 156, 255, .36);
      animation-delay: 2.1s;
    }

    .wrap {
      position: relative;
      z-index: 1;
      width: min(1060px, calc(100% - 32px));
      margin: 0 auto;
    }

    header {
      padding: 82px 0 38px;
      text-align: center;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 16px;
      border-radius: 999px;
      background: rgba(255,255,255,.56);
      color: #397da8;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
      box-shadow: 0 8px 22px rgba(73, 148, 194, .16);
      border: 1px solid rgba(255,255,255,.72);
    }

    h1 {
      margin: 18px 0 8px;
      font-size: clamp(58px, 13vw, 112px);
      letter-spacing: .10em;
      color: #fff;
      line-height: 1;
      text-shadow:
        0 7px 0 rgba(80, 172, 224, .18),
        0 18px 44px rgba(48, 115, 158, .28);
    }

    .lead {
      margin: 0 auto;
      max-width: 680px;
      color: #2f6284;
      font-size: clamp(16px, 2.4vw, 20px);
      font-weight: 900;
      line-height: 1.9;
      letter-spacing: .05em;
    }

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

    .pill-link {
      text-decoration: none;
      padding: 13px 20px;
      border-radius: 999px;
      background: rgba(255,255,255,.72);
      color: #317aa6;
      font-weight: 900;
      box-shadow: 0 12px 28px rgba(72, 147, 190, .18);
      border: 1px solid rgba(255,255,255,.76);
      transition: .18s ease;
    }

    .pill-link:hover {
      transform: translateY(-3px) rotate(-1deg);
    }

    section {
      margin: 24px auto;
      padding: clamp(24px, 4vw, 36px);
      border-radius: 38px;
      background: rgba(255, 255, 255, .72);
      backdrop-filter: blur(14px);
      box-shadow: var(--shadow);
      border: 1px solid rgba(255,255,255,.72);
    }

    h2 {
      margin: 0 0 16px;
      color: #2f7eaa;
      font-size: 24px;
      letter-spacing: .08em;
    }

    .concept-text {
      margin: 0;
      line-height: 2.1;
      font-size: 16px;
    }

    .concept-text strong {
      background: linear-gradient(transparent 55%, rgba(255, 230, 109, .65) 56%);
      font-weight: 900;
    }

    .how-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 18px;
    }

    .how-card {
      min-height: 138px;
      padding: 20px;
      border-radius: 28px;
      background: rgba(255,255,255,.62);
      border: 1px solid rgba(255,255,255,.8);
      box-shadow: 0 10px 24px rgba(72, 147, 190, .10);
    }

    .how-card .num {
      display: inline-flex;
      width: 32px;
      height: 32px;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--yellow);
      color: #4f7890;
      font-weight: 900;
      margin-bottom: 10px;
    }

    .how-card strong {
      display: block;
      color: #317aa6;
      margin-bottom: 6px;
      font-size: 16px;
    }

    .how-card p {
      margin: 0;
      color: var(--sub);
      font-size: 14px;
      line-height: 1.75;
    }

    .post-box {
      position: relative;
      overflow: hidden;
    }

    .post-box::after {
      content: "☁";
      position: absolute;
      right: 28px;
      top: 18px;
      font-size: 62px;
      color: rgba(91, 188, 255, .16);
      transform: rotate(8deg);
      pointer-events: none;
    }

    textarea {
      width: 100%;
      min-height: 170px;
      resize: vertical;
      padding: 22px;
      border: 2px solid rgba(255,255,255,.92);
      border-radius: 30px;
      background: rgba(255,255,255,.86);
      color: var(--ink);
      font-family: inherit;
      font-size: 17px;
      line-height: 1.9;
      outline: none;
      box-shadow: inset 0 0 0 1px rgba(91,188,255,.16);
      transition: .18s ease;
    }

    textarea:focus {
      border-color: rgba(91,188,255,.72);
      box-shadow: 0 0 0 6px rgba(91,188,255,.13);
      transform: translateY(-1px);
    }

    textarea::placeholder {
      color: #9ab4c4;
    }

    .post-row {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 14px;
    }

    input[type="file"] {
      display: none;
    }

    .file-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 18px;
      border-radius: 999px;
      background: rgba(255,255,255,.7);
      border: 1px solid rgba(255,255,255,.86);
      color: #317aa6;
      font-weight: 900;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(72, 147, 190, .12);
    }

    .mini-status {
      color: var(--sub);
      font-size: 13px;
    }

    .preview {
      display: none;
      max-width: 280px;
      width: 100%;
      margin-top: 16px;
      border-radius: 28px;
      box-shadow: 0 14px 30px rgba(72, 147, 190, .20);
      border: 6px solid rgba(255,255,255,.74);
    }

    .buttons {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 18px;
    }

    button {
      border: none;
      font-family: inherit;
      cursor: pointer;
      transition: .18s ease;
    }

    button:hover {
      transform: translateY(-3px);
    }

    .primary {
      flex: 2;
      min-width: 190px;
      padding: 16px 22px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--pink), var(--blue));
      color: #fff;
      font-size: 16px;
      font-weight: 900;
      letter-spacing: .08em;
      box-shadow: 0 14px 28px rgba(255, 140, 198, .22), 0 14px 28px rgba(91,188,255,.22);
    }

    .secondary {
      flex: 1;
      min-width: 150px;
      padding: 15px 18px;
      border-radius: 999px;
      background: rgba(255,255,255,.68);
      color: #317aa6;
      font-weight: 900;
      border: 1px solid rgba(255,255,255,.86);
    }

    .danger {
      color: #bc6a7f;
    }

    .note {
      margin: 14px 0 0;
      color: var(--sub);
      font-size: 13px;
      line-height: 1.8;
    }

    .archive-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 14px;
    }

    .count {
      padding: 9px 15px;
      border-radius: 999px;
      background: rgba(255,230,109,.55);
      color: #47758e;
      font-size: 13px;
      font-weight: 900;
      box-shadow: 0 8px 18px rgba(255,230,109,.22);
    }

    .sky {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 70px 34px;
      padding: 42px 0 18px;
    }

    .cloud {
      width: 310px;
      min-height: 154px;
      padding: 38px 26px 24px;
      background: rgba(255,255,255,.96);
      border-radius: 64px;
      box-shadow: 0 18px 38px rgba(48, 115, 158, .18);
      position: relative;
      animation: float 5.8s ease-in-out infinite;
      transform-origin: center;
    }

    .cloud:nth-child(2n) {
      animation-delay: .8s;
    }

    .cloud:nth-child(3n) {
      animation-delay: 1.6s;
    }

    .cloud:nth-child(4n) {
      animation-delay: 2.3s;
    }

    .cloud::before,
    .cloud::after {
      content: "";
      position: absolute;
      background: rgba(255,255,255,.96);
      border-radius: 50%;
      z-index: 0;
    }

    .cloud::before {
      width: 94px;
      height: 94px;
      top: -38px;
      left: 38px;
    }

    .cloud::after {
      width: 124px;
      height: 124px;
      top: -59px;
      right: 28px;
    }

    .cloud-inner {
      position: relative;
      z-index: 1;
    }

    .memo-date {
      display: inline-flex;
      padding: 5px 10px;
      margin-bottom: 10px;
      border-radius: 999px;
      background: rgba(196,241,255,.55);
      color: #5f94b0;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .04em;
    }

    .memo-text {
      margin: 0;
      white-space: pre-wrap;
      color: #36586b;
      line-height: 1.85;
      font-size: 15.8px;
    }

    .memo-image {
      display: block;
      width: 100%;
      margin: 14px 0 4px;
      border-radius: 24px;
      box-shadow: 0 10px 22px rgba(48, 115, 158, .14);
    }

    .memo-tools {
      display: flex;
      justify-content: flex-end;
      margin-top: 12px;
    }

    .tiny-delete {
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 140, 198, .14);
      color: #b55d85;
      font-size: 12px;
      font-weight: 800;
    }

    .empty {
      width: 100%;
      text-align: center;
      color: var(--sub);
      line-height: 2;
      padding: 34px 10px;
    }

    footer {
      position: relative;
      z-index: 1;
      padding: 36px 20px 54px;
      text-align: center;
      color: #6b8fa3;
      font-size: 13px;
    }

    @keyframes float {
      0%, 100% {
        translate: 0 0;
        rotate: 0deg;
      }
      50% {
        translate: 0 -13px;
        rotate: .6deg;
      }
    }

    @keyframes drift {
      0%, 100% {
        translate: 0 0;
      }
      50% {
        translate: 14px -18px;
      }
    }

    @media (max-width: 760px) {
      header {
        padding-top: 66px;
      }

      .how-grid {
        grid-template-columns: 1fr;
      }

      .cloud {
        width: min(320px, 88vw);
      }

      .lead {
        font-size: 15px;
      }
    }


    /* === お気に入り・天使ちゃん === */
    .favorite-page {
      display: none;
    }

    .favorite-page.is-active {
      display: block;
    }

    body.favorites-view .concept,
    body.favorites-view .howto,
    body.favorites-view .post-box,
    body.favorites-view .archive {
      display: none;
    }

    .memo-tools {
      gap: 8px;
      flex-wrap: wrap;
    }

    .tiny-favorite {
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255,230,109,.36);
      color: #9a7a1b;
      font-size: 12px;
      font-weight: 900;
    }

    .tiny-favorite.is-on {
      background: rgba(255, 230, 109, .82);
      color: #7a5d00;
      box-shadow: 0 8px 16px rgba(255,230,109,.22);
    }

    .seed-panel {
      margin-top: 16px;
      padding: 16px 18px;
      border-radius: 26px;
      background: rgba(255,255,255,.58);
      border: 1px solid rgba(255,255,255,.78);
      color: #397da8;
      font-weight: 900;
      line-height: 1.8;
      box-shadow: 0 10px 24px rgba(72, 147, 190, .10);
    }

    .seed-panel small {
      display: block;
      color: var(--sub);
      font-size: 12px;
      letter-spacing: .06em;
      margin-bottom: 4px;
    }

    .angel-buddy {
      position: fixed;
      right: clamp(12px, 3vw, 28px);
      bottom: clamp(14px, 3vw, 28px);
      z-index: 20;
      display: flex;
      align-items: flex-end;
      gap: 10px;
      pointer-events: none;
    }

    .angel-speech {
      max-width: min(285px, 60vw);
      padding: 13px 16px;
      border-radius: 22px 22px 8px 22px;
      background: rgba(255,255,255,.90);
      border: 1px solid rgba(255,255,255,.94);
      box-shadow: 0 14px 34px rgba(72, 147, 190, .20);
      color: #397da8;
      font-size: 13px;
      font-weight: 900;
      line-height: 1.75;
      opacity: 1;
      transform: translateY(0);
      transition: .25s ease;
    }

    .angel-speech.is-hidden {
      opacity: 0;
      transform: translateY(12px);
    }

    .angel-button {
      pointer-events: auto;
      width: clamp(180px, 30vw, 270px);
      aspect-ratio: 1 / 1.22;
      padding: 0;
      border: 0;
      background: transparent;
      filter: drop-shadow(0 16px 22px rgba(54, 117, 157, .24));
      animation: angelFloat 4.6s ease-in-out infinite;
      cursor: pointer;
      position: relative;
    }

    .angel-button img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
      transition: transform .18s ease, opacity .18s ease;
      user-select: none;
      -webkit-user-drag: none;
    }

    .angel-button:hover img,
    .angel-button:focus-visible img {
      transform: scale(1.06) rotate(-3deg);
    }

    .angel-button:active img {
      transform: scale(.96) rotate(2deg);
    }

    .angel-button::after {
      content: "💭";
      position: absolute;
      right: 8px;
      top: 8px;
      padding: 4px 8px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.92);
      color: #47758e;
      font-size: 11px;
      font-weight: 900;
      box-shadow: 0 7px 14px rgba(255,230,109,.18);
    }

    .angel-toast {
      position: fixed;
      left: 50%;
      bottom: 24px;
      z-index: 25;
      width: min(470px, calc(100% - 30px));
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 14px 16px;
      border-radius: 30px;
      background: rgba(255,255,255,.94);
      border: 1px solid rgba(255,255,255,.96);
      box-shadow: 0 18px 44px rgba(72, 147, 190, .24);
      transform: translate(-50%, 140%);
      opacity: 0;
      transition: .35s ease;
      pointer-events: none;
    }

    .angel-toast.show {
      transform: translate(-50%, 0);
      opacity: 1;
    }

    .angel-toast img {
      width: 128px;
      height: 128px;
      object-fit: contain;
      flex: 0 0 auto;
      filter: drop-shadow(0 8px 12px rgba(54, 117, 157, .16));
    }

    .angel-toast p {
      margin: 0;
      color: #397da8;
      font-weight: 900;
      line-height: 1.75;
      font-size: 14px;
    }

    @keyframes angelFloat {
      0%, 100% {
        translate: 0 0;
        rotate: 0deg;
      }
      50% {
        translate: 0 -10px;
        rotate: -2deg;
      }
    }

    @media (max-width: 760px) {
      .angel-buddy {
        right: 6px;
        bottom: 8px;
        gap: 4px;
      }

      .angel-button {
        width: clamp(145px, 42vw, 200px);
      }

      .angel-speech {
        font-size: 12px;
        max-width: 184px;
        padding: 10px 12px;
      }

      .angel-toast {
        bottom: 12px;
        border-radius: 24px;
      }

      .angel-toast img {
        width: 104px;
        height: 104px;
      }

      .angel-toast p {
        font-size: 13px;
      }
    }