:root {
      --ink: #1f2923;
      --ink-soft: #435047;
      --muted: #667168;
      --green: #316b50;
      --green-dark: #24543d;
      --green-soft: #e7efe8;
      --coral: #dc674b;
      --coral-soft: #f7e5df;
      --violet: #7158ad;
      --violet-soft: #ece8f6;
      --gold: #a97822;
      --gold-soft: #f4ecd9;
      --paper: #f7f8f5;
      --surface: #ffffff;
      --line: #d9dfda;
      --line-dark: #bec9c0;
      --dark: #18231d;
      --dark-soft: #26362d;
      --sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: var(--sans);
      line-height: 1.6;
    }

    button,
    a {
      font: inherit;
    }

    a {
      color: inherit;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid rgba(217, 223, 218, 0.86);
      background: rgba(247, 248, 245, 0.94);
      backdrop-filter: blur(16px);
    }

    .topbar-inner,
    .content {
      width: min(1120px, calc(100% - 48px));
      margin: 0 auto;
    }

    .topbar-inner {
      min-height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      font-weight: 800;
      font-size: 21px;
    }

    .brand-mark {
      display: block;
      flex: 0 0 auto;
      width: 30px;
      height: 30px;
      border-radius: 8px;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 26px;
      color: var(--ink-soft);
      font-size: 14px;
      font-weight: 650;
    }

    .nav a {
      text-decoration: none;
    }

    .nav a:hover {
      color: var(--green);
    }

    .hero {
      position: relative;
      min-height: 620px;
      height: calc(100svh - 112px);
      max-height: 720px;
      overflow: hidden;
      border-bottom: 1px solid var(--line);
      background: var(--green-soft);
    }

    .hero::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 1px;
      background: var(--line-dark);
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      width: min(1120px, calc(100% - 48px));
      height: 100%;
      margin: 0 auto;
      padding: 50px 0 42px;
    }

    .hero-copy {
      position: relative;
      z-index: 4;
      max-width: 480px;
    }

    .eyebrow {
      margin: 0 0 18px;
      color: var(--green-dark);
      font-size: 14px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      display: inline-block;
      width: 28px;
      height: 2px;
      margin-right: 10px;
      vertical-align: middle;
      background: var(--coral);
    }

    h1,
    h2,
    h3,
    p {
      overflow-wrap: anywhere;
    }

    h1 {
      margin: 0;
      font-family: var(--serif);
      font-size: 56px;
      line-height: 1.06;
      font-weight: 700;
    }

    h1 span {
      display: block;
      margin-top: 9px;
      color: var(--green-dark);
      font-size: 29px;
      line-height: 1.3;
    }

    .hero-tagline {
      max-width: 560px;
      margin: 18px 0 0;
      color: var(--green-dark);
      font-family: var(--serif);
      font-size: 27px;
      line-height: 1.35;
      font-weight: 700;
    }

    .hero-lead {
      max-width: 470px;
      margin: 18px 0 0;
      color: var(--ink-soft);
      font-size: 16px;
      line-height: 1.75;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .button {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 6px;
      text-decoration: none;
      font-weight: 750;
      cursor: pointer;
      transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
    }

    .button:hover {
      transform: translateY(-1px);
    }

    .button-primary {
      color: #fff;
      background: var(--green);
    }

    .button-primary:hover {
      background: var(--green-dark);
    }

    .button-secondary {
      color: var(--green-dark);
      border-color: #aabcae;
      background: rgba(255, 255, 255, 0.58);
    }

    .button-secondary:hover {
      border-color: var(--green);
      background: #fff;
    }

    .trust-row {
      display: flex;
      flex-wrap: wrap;
      gap: 18px 28px;
      margin-top: 20px;
      color: var(--ink-soft);
      font-size: 13px;
      font-weight: 650;
    }

    .trust-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .trust-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--coral);
    }

    .chat-stage {
      position: absolute;
      z-index: 1;
      right: -30px;
      bottom: -66px;
      width: 535px;
      height: 360px;
      border: 1px solid rgba(49, 107, 80, 0.2);
      background: rgba(255, 255, 255, 0.6);
      box-shadow: 0 30px 70px rgba(35, 73, 51, 0.16);
      opacity: 0.66;
    }

    .chat-head {
      min-height: 52px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 18px;
      border-bottom: 1px solid rgba(49, 107, 80, 0.16);
      color: var(--green-dark);
      background: rgba(255, 255, 255, 0.76);
      font-size: 13px;
      font-weight: 750;
    }

    .chat-status {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--muted);
      font-weight: 600;
    }

    .chat-status::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #62a66f;
    }

    .chat-body {
      display: flex;
      flex-direction: column;
      gap: 13px;
      padding: 20px;
    }

    .message {
      max-width: 82%;
      padding: 11px 13px;
      border: 1px solid rgba(49, 107, 80, 0.12);
      border-radius: 8px;
      color: var(--ink);
      background: #fff;
      font-size: 14px;
      line-height: 1.55;
      box-shadow: 0 8px 24px rgba(35, 73, 51, 0.08);
    }

    .message-system {
      align-self: flex-start;
      background: #fff;
    }

    .message-me {
      align-self: flex-end;
      border-color: #bed1c2;
      background: #dcebdc;
    }

    .message-note {
      align-self: flex-start;
      border-color: #ead5ce;
      background: var(--coral-soft);
    }

    .message small {
      display: block;
      margin-bottom: 4px;
      color: var(--muted);
      font-size: 11px;
      font-weight: 750;
    }

    .floating-note {
      position: absolute;
      z-index: 3;
      right: 365px;
      bottom: 20px;
      width: 238px;
      padding: 15px 17px;
      border: 1px solid #d8c8e7;
      border-radius: 8px;
      background: var(--violet-soft);
      box-shadow: 0 18px 34px rgba(69, 48, 116, 0.12);
      font-size: 13px;
      line-height: 1.55;
    }

    .floating-note strong {
      display: block;
      margin-bottom: 4px;
      color: var(--violet);
      font-size: 12px;
    }

    .onboarding-panel {
      position: absolute;
      z-index: 6;
      top: 34px;
      right: 0;
      width: 570px;
      overflow: hidden;
      border: 1px solid var(--line-dark);
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 24px 54px rgba(35, 73, 51, 0.16);
    }

    .onboarding-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px 12px;
    }

    .onboarding-head h2 {
      margin: 0;
      font-family: var(--sans);
      font-size: 20px;
      line-height: 1.35;
      font-weight: 800;
    }

    .status-label {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 30px;
      padding: 0 10px;
      border: 1px solid #c8d9cb;
      border-radius: 999px;
      color: var(--green-dark);
      background: #f0f7f1;
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .status-label::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #62a66f;
    }

    .onboarding-body {
      padding: 10px 20px 20px;
    }

    .bind-stepper {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 8px;
      margin-bottom: 12px;
    }

    .bind-step {
      min-height: 55px;
      display: grid;
      grid-template-columns: 20px minmax(0, 1fr);
      gap: 8px;
      align-items: center;
      padding: 8px;
      border: 1px dashed var(--line-dark);
      border-radius: 6px;
      color: var(--muted);
      background: var(--paper);
    }

    .bind-step::before {
      content: "";
      width: 20px;
      height: 20px;
      border: 1px solid var(--line-dark);
      border-radius: 50%;
      background: #fff;
    }

    .bind-step.active {
      color: var(--ink);
      border-style: solid;
      border-color: #9db7a2;
      background: #f0f6f1;
    }

    .bind-step.active::before {
      border-color: var(--green);
      box-shadow: inset 0 0 0 5px #fff;
      background: var(--green);
    }

    .bind-step b {
      display: block;
      font-size: 12px;
      line-height: 1.35;
    }

    .bind-step span {
      display: block;
      margin-top: 2px;
      color: var(--muted);
      font-size: 10px;
      line-height: 1.35;
    }

    .bind-qr-area {
      min-height: 220px;
      display: grid;
      grid-template-columns: 168px minmax(0, 1fr);
      gap: 16px;
      align-items: center;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fafbf9;
    }

    .bind-qr-box {
      width: 100%;
      height: 176px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line-dark);
      background: #fff;
      box-shadow: inset 0 0 0 7px var(--paper);
    }

    .bind-qr-box img {
      width: 152px;
      height: 152px;
      object-fit: contain;
      image-rendering: crisp-edges;
    }

    .bind-qr-placeholder {
      width: 146px;
      height: 146px;
      display: grid;
      place-items: center;
      padding: 16px;
      border: 1px dashed var(--line-dark);
      color: var(--green-dark);
      background: var(--paper);
      text-align: center;
      font-size: 12px;
      line-height: 1.55;
    }

    .bind-qr-placeholder.status {
      align-content: center;
      gap: 7px;
      border-style: solid;
      border-color: #b9d1be;
      background: #f0f7f1;
    }

    .bind-status-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--green);
      font-size: 20px;
      font-weight: 900;
    }

    .bind-status-title {
      color: var(--green-dark);
      font-size: 13px;
      font-weight: 850;
    }

    .bind-status-detail {
      color: var(--muted);
      font-size: 10px;
      line-height: 1.45;
    }

    .bind-qr-meta {
      min-width: 0;
    }

    .bind-qr-meta h3 {
      margin: 0 0 5px;
      font-size: 17px;
      line-height: 1.4;
    }

    .bind-qr-meta > p {
      margin: 0 0 10px;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.55;
    }

    .bind-countdown {
      min-height: 27px;
      display: inline-flex;
      align-items: center;
      margin-bottom: 10px;
      padding: 0 9px;
      color: #775018;
      background: var(--gold-soft);
      font-size: 11px;
      font-weight: 800;
    }

    .bind-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
    }

    .onboarding-panel .button {
      min-height: 36px;
      padding: 0 11px;
      font-size: 12px;
    }

    .button:disabled {
      cursor: not-allowed;
      opacity: 0.48;
      transform: none;
    }

    .bind-notice {
      margin-top: 11px;
      padding: 9px 10px;
      border-left: 3px solid #90ad96;
      color: #496050;
      background: #eef5ef;
      font-size: 11px;
      line-height: 1.5;
    }

    .bind-notice.warning {
      border-color: var(--gold);
      color: #6d4b18;
      background: var(--gold-soft);
    }

    .bind-readiness {
      display: grid;
      gap: 6px;
      margin-top: 9px;
    }

    .bind-readiness-row {
      min-height: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 5px 8px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--muted);
      font-size: 11px;
    }

    .bind-readiness-row strong {
      color: var(--gold);
    }

    .bind-readiness-row strong.ready {
      color: var(--green);
    }

    .hidden {
      display: none !important;
    }

    .section {
      padding: 96px 0;
      border-bottom: 1px solid var(--line);
    }

    .section-white {
      background: var(--surface);
    }

    .section-dark {
      color: #f3f6f4;
      border-color: #31443a;
      background: var(--dark);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 46px;
    }

    .section-kicker {
      margin: 0 0 10px;
      color: var(--coral);
      font-size: 13px;
      font-weight: 850;
    }

    h2 {
      margin: 0;
      font-family: var(--serif);
      font-size: 46px;
      line-height: 1.25;
      font-weight: 700;
    }

    .section-head > p:last-child {
      margin: 18px 0 0;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.8;
    }

    .section-dark .section-head > p:last-child {
      color: #bdc9c1;
    }

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

    .value-item {
      min-height: 220px;
      padding: 30px 28px;
      border-right: 1px solid var(--line-dark);
    }

    .value-item:last-child {
      border-right: 0;
    }

    .value-index {
      margin: 0 0 28px;
      color: var(--green);
      font-family: var(--serif);
      font-size: 18px;
      font-weight: 700;
    }

    .value-item h3 {
      margin: 0 0 10px;
      font-size: 21px;
    }

    .value-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .signature-section {
      background: #eef2ed;
    }

    .signature-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .signature-feature {
      min-width: 0;
      padding: 30px;
      overflow: hidden;
      border: 1px solid var(--line-dark);
      border-radius: 8px;
      background: var(--surface);
    }

    .signature-label {
      margin: 0 0 8px;
      color: var(--green);
      font-size: 13px;
      font-weight: 850;
    }

    .signature-feature h3 {
      margin: 0;
      font-family: var(--serif);
      font-size: 29px;
      line-height: 1.35;
    }

    .signature-description {
      min-height: 76px;
      margin: 12px 0 24px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .cat-showcase {
      min-height: 312px;
      display: grid;
      grid-template-columns: minmax(0, 0.88fr) minmax(190px, 1.12fr);
      border: 1px solid #d5cfc5;
      background: #f4ede3;
    }

    .cat-portrait {
      min-width: 0;
      display: flex;
      align-items: flex-end;
      justify-content: center;
      overflow: hidden;
      background: #faf4ea;
    }

    .cat-portrait img {
      width: min(118%, 290px);
      height: auto;
      display: block;
    }

    .cat-readout {
      min-width: 0;
      padding: 24px 20px;
      color: #fff;
      background: var(--green-dark);
    }

    .cat-day {
      margin: 0 0 5px;
      color: #c7dbcb;
      font-size: 11px;
      font-weight: 800;
    }

    .cat-name-row {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 10px;
      padding-bottom: 15px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }

    .cat-name-row strong {
      font-size: 20px;
    }

    .cat-name-row span {
      color: #d9e7dc;
      font-size: 12px;
    }

    .cat-narration {
      margin: 15px 0 17px;
      color: #eef5f0;
      font-family: var(--serif);
      font-size: 14px;
      line-height: 1.65;
    }

    .cat-metrics {
      display: grid;
      gap: 10px;
    }

    .cat-metric-head {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 3px;
      color: #dce9df;
      font-size: 11px;
    }

    .cat-metric-track {
      height: 4px;
      overflow: hidden;
      background: rgba(255, 255, 255, 0.18);
    }

    .cat-metric-fill {
      height: 100%;
      background: #f3b36a;
    }

    .cat-metric-fill-82 { width: 82%; }
    .cat-metric-fill-91 { width: 91%; }
    .cat-metric-fill-76 { width: 76%; }
    .cat-metric-fill-68 { width: 68%; }

    .kaomoji-showcase {
      min-height: 312px;
      display: grid;
      place-items: center;
      padding: 30px;
      border: 1px solid #dbcfc9;
      background: var(--coral-soft);
    }

    .kaomoji-paper {
      width: min(100%, 390px);
      margin: 0;
      padding: 26px 28px 24px;
      border: 1px solid #d7d7d2;
      background: #fff;
      box-shadow: 0 16px 28px rgba(64, 51, 45, 0.1);
      color: var(--ink);
      font-family: "SFMono-Regular", "Menlo", "Noto Sans Mono CJK SC", monospace;
      font-size: 16px;
      line-height: 1.65;
      letter-spacing: 0;
      overflow-x: auto;
      white-space: pre;
    }

    .signature-footnote {
      margin: 14px 0 0;
      color: var(--muted);
      font-size: 12px;
      text-align: center;
    }

    .day-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .day-item {
      min-height: 310px;
      display: flex;
      flex-direction: column;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    .day-time {
      margin: 0;
      color: var(--green);
      font-size: 13px;
      font-weight: 850;
    }

    .day-item h3 {
      margin: 8px 0 14px;
      font-size: 20px;
    }

    .day-message {
      flex: 1;
      margin: 0;
      padding: 14px;
      border-left: 3px solid var(--coral);
      color: var(--ink-soft);
      background: var(--paper);
      font-family: var(--serif);
      font-size: 15px;
      line-height: 1.7;
    }

    .day-caption {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 13px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

    .feature-card {
      min-height: 270px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
    }

    .feature-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      margin-bottom: 34px;
      border-radius: 6px;
      color: #fff;
      font-family: var(--serif);
      font-size: 18px;
      font-weight: 800;
    }

    .mark-green {
      background: var(--green);
    }

    .mark-coral {
      background: var(--coral);
    }

    .mark-gold {
      background: var(--gold);
    }

    .mark-violet {
      background: var(--violet);
    }

    .feature-card h3 {
      margin: 0 0 10px;
      font-size: 20px;
    }

    .feature-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .privacy-grid {
      display: grid;
      grid-template-columns: minmax(400px, 1.25fr) repeat(2, minmax(0, 1fr));
      gap: 40px;
    }

    .privacy-lead {
      padding-right: 0;
    }

    .privacy-lead h2 {
      max-width: none;
      white-space: nowrap;
    }

    .privacy-lead p {
      margin: 18px 0 0;
      color: #bdc9c1;
    }

    .privacy-column {
      border-top: 1px solid #52675b;
      padding-top: 22px;
    }

    .privacy-column h3 {
      margin: 0 0 10px;
      color: #fff;
      font-size: 19px;
    }

    .privacy-column p {
      margin: 0;
      color: #bdc9c1;
      font-size: 14px;
    }

    .privacy-column + .privacy-column {
      margin-top: 70px;
    }

    .start-layout {
      display: block;
    }

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

    .step {
      display: grid;
      grid-template-columns: 42px minmax(0, 1fr);
      gap: 14px;
      padding: 26px 22px;
      border-right: 1px solid var(--line);
    }

    .step:first-child {
      padding-left: 0;
    }

    .step:last-child {
      padding-right: 0;
      border-right: 0;
    }

    .step-number {
      width: 36px;
      height: 36px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--green);
      font-size: 14px;
      font-weight: 850;
    }

    .step h3 {
      margin: 0 0 6px;
      font-size: 19px;
    }

    .step p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .guide-strip {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      margin-top: 54px;
      padding: 28px 0;
      border-top: 1px solid var(--line-dark);
      border-bottom: 1px solid var(--line-dark);
    }

    .guide-strip h3 {
      margin: 0 0 5px;
      font-size: 19px;
    }

    .guide-strip p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .text-link {
      color: var(--green-dark);
      font-weight: 800;
      text-underline-offset: 4px;
    }

    .faq-list {
      border-top: 1px solid var(--line-dark);
    }

    details {
      border-bottom: 1px solid var(--line);
    }

    summary {
      position: relative;
      padding: 22px 42px 22px 0;
      cursor: pointer;
      list-style: none;
      font-size: 18px;
      font-weight: 750;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::after {
      content: "+";
      position: absolute;
      right: 4px;
      top: 18px;
      color: var(--green);
      font-size: 24px;
      font-weight: 500;
    }

    details[open] summary::after {
      content: "−";
    }

    details p {
      max-width: 820px;
      margin: -6px 0 22px;
      color: var(--muted);
      font-size: 14px;
    }

    .footer {
      padding: 30px 0;
      color: var(--muted);
      background: var(--surface);
      font-size: 12px;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      width: min(1120px, calc(100% - 48px));
      margin: 0 auto;
    }

    @media (max-width: 980px) {
      .hero {
        min-height: 0;
        height: auto;
        max-height: none;
      }

      .hero-inner {
        min-height: 0;
        height: auto;
        padding: 44px 0;
      }

      .hero-copy {
        max-width: 640px;
      }

      h1 {
        font-size: 52px;
      }

      .hero-tagline {
        font-size: 26px;
      }

      .onboarding-panel {
        position: relative;
        top: auto;
        right: auto;
        width: min(100%, 650px);
        margin-top: 30px;
      }

      .chat-stage {
        display: none;
      }

      .floating-note {
        display: none;
      }

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

      .signature-feature {
        padding: 24px;
      }

      .cat-showcase {
        grid-template-columns: minmax(0, 0.8fr) minmax(180px, 1.2fr);
      }

      .value-item:nth-child(2) {
        border-right: 0;
      }

      .value-item:last-child {
        grid-column: 1 / -1;
        border-top: 1px solid var(--line-dark);
      }

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

      .privacy-lead {
        grid-column: 1 / -1;
      }

      .privacy-column + .privacy-column {
        margin-top: 0;
      }

    }

    @media (max-width: 700px) {
      .topbar-inner,
      .content,
      .hero-inner,
      .footer-inner {
        width: calc(100% - 28px);
      }

      .topbar-inner {
        min-height: 56px;
      }

      .nav {
        display: none;
      }

      .hero {
        min-height: 0;
        height: auto;
        max-height: none;
      }

      .hero-inner {
        min-height: 0;
        height: auto;
        padding: 30px 0;
      }

      h1 {
        font-size: 40px;
      }

      h1 span {
        margin-top: 7px;
        font-size: 24px;
      }

      .hero-tagline {
        max-width: 390px;
        margin-top: 12px;
        font-size: 23px;
      }

      .hero-lead {
        max-width: 390px;
        margin-top: 13px;
        font-size: 14px;
        line-height: 1.65;
      }

      .hero-actions {
        margin-top: 18px;
      }

      .button {
        min-height: 44px;
        padding: 0 16px;
        font-size: 14px;
      }

      .trust-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: 7px;
        margin-top: 14px;
        font-size: 12px;
      }

      .chat-stage {
        display: none;
      }

      .onboarding-panel {
        width: 100%;
        margin-top: 24px;
      }

      .onboarding-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 9px;
        padding: 18px 16px 10px;
      }

      .onboarding-head h2 {
        font-size: 18px;
      }

      .onboarding-body {
        padding: 10px 16px 16px;
      }

      .bind-stepper,
      .bind-qr-area {
        grid-template-columns: 1fr;
      }

      .bind-step {
        min-height: 48px;
      }

      .bind-qr-box {
        width: min(100%, 190px);
        height: 190px;
        margin: 0 auto;
      }

      .bind-qr-box img {
        width: 164px;
        height: 164px;
      }

      .bind-qr-placeholder {
        width: 160px;
        height: 160px;
      }

      .section {
        padding: 68px 0;
      }

      h2 {
        font-size: 34px;
      }

      .section-head {
        margin-bottom: 32px;
      }

      .section-head > p:last-child {
        font-size: 15px;
      }

      .value-grid,
      .day-grid,
      .feature-grid,
      .signature-grid,
      .privacy-grid,
      .step-list {
        grid-template-columns: 1fr;
      }

      .signature-feature {
        padding: 20px;
      }

      .signature-description {
        min-height: 0;
      }

      .cat-showcase {
        grid-template-columns: 1fr;
      }

      .cat-portrait {
        min-height: 230px;
      }

      .cat-portrait img {
        width: min(78%, 260px);
      }

      .kaomoji-showcase {
        min-height: 285px;
        padding: 20px;
      }

      .kaomoji-paper {
        padding: 22px 18px 20px;
        font-size: 14px;
      }

      .value-item {
        min-height: auto;
        padding: 24px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .value-item:last-child {
        grid-column: auto;
        border-top: 0;
        border-bottom: 0;
      }

      .value-index {
        margin-bottom: 14px;
      }

      .day-item,
      .feature-card {
        min-height: auto;
      }

      .feature-mark {
        margin-bottom: 22px;
      }

      .privacy-lead {
        grid-column: auto;
        padding-right: 0;
      }

      .privacy-lead h2 {
        white-space: normal;
      }

      .privacy-column {
        padding-top: 18px;
      }

      .privacy-column + .privacy-column {
        margin-top: 10px;
      }

      .step {
        padding: 22px 0;
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .step:last-child {
        border-bottom: 0;
      }

      .guide-strip {
        grid-template-columns: 1fr;
      }

      summary {
        font-size: 16px;
      }

      .footer-inner {
        display: block;
      }

      .footer-inner span:last-child {
        display: block;
        margin-top: 4px;
      }
    }

    @media (prefers-reduced-motion: no-preference) {
      .message-me {
        animation: settle 700ms ease-out both;
      }

      @keyframes settle {
        from {
          opacity: 0;
          transform: translateY(8px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }
    }