@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(350px, .9fr); gap: 44px; }
  .hero-art-wrap { width: min(100%, 460px); }
  .note-top { left: -28px; }
  .note-bottom { right: -12px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card { min-height: 255px; }
  .feature-card p { min-height: 42px; }
  .about-grid { gap: 65px; }
  .command-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 36px), var(--container)); }
  .section { padding: 84px 0; }
  .nav-wrap { min-height: 75px; }
  .brand-avatar { width: 44px; height: 44px; border-radius: 15px; }
  .brand-copy strong { font-size: 20px; }
  .nav-toggle { display: flex; width: 43px; height: 43px; flex-direction: column; align-items: center; justify-content: center; gap: 6px; border: 1px solid #efdde3; border-radius: 14px; background: #fff; cursor: pointer; }
  .nav-toggle span { display: block; width: 17px; height: 2px; border-radius: 2px; background: #a56f83; transition: transform .2s ease; }
  .nav-toggle.is-open span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle.is-open span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .primary-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: flex; align-items: stretch; flex-direction: column; gap: 0; padding: 8px 18px 19px; border-bottom: 1px solid #efdfdf; background: rgba(255,250,246,.98); box-shadow: 0 15px 25px rgba(122,80,95,.08); opacity: 0; pointer-events: none; transform: translateY(-8px); transition: opacity .2s ease, transform .2s ease; }
  .primary-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .primary-nav > a { padding: 12px 6px; border-bottom: 1px solid #f4e8e7; font-size: 13px; }
  .primary-nav > a::after { display: none; }
  .theme-toggle { align-self: flex-start; margin-top: 13px; }
  html[data-theme="night"] .nav-toggle { border-color: #594253; background: #3a3040; }
  html[data-theme="night"] .nav-toggle span { background: #e8b8ca; }
  html[data-theme="night"] .primary-nav { border-color: #4a3949; background: rgba(39,35,47,.99); }
  html[data-theme="night"] .primary-nav > a { border-color: #4a3949; }
  .hero-section { padding: 54px 0 70px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { padding: 0; text-align: center; }
  .eyebrow { margin-inline: auto; }
  .hero-copy h1 { font-size: clamp(46px, 10vw, 68px); }
  .hero-description { margin-inline: auto; }
  .hero-actions, .hero-chips { justify-content: center; }
  .hero-signature { justify-content: center; }
  .hero-art-wrap { width: min(84%, 470px); justify-self: center; margin: 0 auto; }
  .decor-star-one { top: 7%; left: 7%; }
  .decor-star-two { right: 10%; bottom: 9%; }
  .decor-heart { top: 42%; right: 5%; }
  .about-grid { grid-template-columns: minmax(0, 1fr); gap: 52px; }
  .about-visual { width: min(82%, 430px); margin-inline: auto; }
  .about-copy { max-width: 650px; }
  .personality-grid { max-width: 510px; }
  .commands-heading { align-items: start; }
  .command-book-stamp { min-width: 113px; padding: 13px 10px; }
  .command-book-stamp strong { font-size: 13px; }
  .diary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .diary-card-large { grid-column: 1 / -1; display: grid; grid-template-columns: .9fr 1.1fr; }
  .diary-card-large .diary-art { min-height: 100%; }
  .diary-card-large .diary-body { align-self: center; }
  .faq-grid { grid-template-columns: 1fr; gap: 32px; }
  .faq-intro { max-width: 580px; }
  .faq-doodle { margin-top: 15px; }
  .community-card { padding: 48px 25px 52px; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 30px), var(--container)); }
  .section { padding: 69px 0; }
  .top-ribbon { gap: 8px; min-height: 29px; font-size: 8px; letter-spacing: .1em; }
  .nav-wrap { min-height: 68px; }
  .brand { gap: 9px; }
  .brand-avatar { width: 40px; height: 40px; border-radius: 14px; }
  .brand-copy strong { font-size: 19px; }
  .brand-copy small { font-size: 9px; }
  .hero-section { padding: 44px 0 58px; }
  .hero-grid { gap: 34px; }
  .eyebrow { margin-bottom: 17px; padding: 8px 11px; font-size: 8px; }
  .hero-copy h1 { font-size: clamp(41px, 11.5vw, 56px); }
  .hero-subtitle { margin-top: 5px; font-size: 15px; }
  .hero-description { max-width: 420px; margin-bottom: 22px; font-size: 12px; line-height: 1.85; }
  .hero-description > span { display: inline-block; margin-top: 3px; }
  .hero-actions { gap: 9px; }
  .button { min-height: 45px; padding: 12px 15px; border-radius: 13px; font-size: 10px; }
  .hero-signature { gap: 7px; margin-top: 21px; font-size: 9px; }
  .signature-doodle { font-size: 20px; }
  .hero-chips { gap: 6px; margin-top: 19px; }
  .hero-chips span { padding: 5px 8px; font-size: 8px; }
  .hero-art-wrap { width: min(88%, 380px); padding: 0 12px 10px 0; }
  .hero-image-frame { border-width: 6px; border-radius: 34% 34% 19px 19px / 25% 25% 19px 19px; }
  .hero-image { aspect-ratio: 1 / 1.03; }
  .note-top { top: 11%; left: -23px; gap: 7px; padding: 9px 11px; }
  .note-bottom { right: -18px; bottom: 5%; gap: 7px; padding: 9px 10px; }
  .floating-note strong { font-size: 10px; }
  .floating-note small { font-size: 8px; }
  .note-icon { width: 27px; height: 27px; border-radius: 9px; font-size: 17px; }
  .mood-face { width: 21px; height: 21px; font-size: 13px; }
  .image-sticker { padding: 6px 9px; font-size: 9px; }
  .sticker-top { top: 10px; right: 10px; }
  .sticker-bottom { bottom: 11px; left: 9px; }
  .decor-star { font-size: 22px; }
  .decor-heart { font-size: 27px; }
  .welcome-strip { padding: 13px 0; }
  .welcome-strip-inner, .closing-note-inner { gap: 9px; }
  .welcome-strip-inner p, .closing-note-inner p { font-size: 9px; }
  .welcome-strip-inner > span, .closing-note-inner > span { font-size: 15px; }
  .section-title { margin-bottom: 13px; font-size: clamp(32px, 9vw, 41px); }
  .section-kicker { margin-bottom: 12px; font-size: 8px; }
  .section-lead { font-size: 12px; line-height: 1.85; }
  .about-grid { gap: 43px; }
  .about-visual { width: min(84%, 340px); padding: 8px 9px 25px 0; }
  .about-photo-card { padding: 8px 8px 37px; }
  .about-photo-card img { border-radius: 6px; }
  .photo-caption { bottom: 9px; font-size: 10px; }
  .doodle-heart { right: -12px; font-size: 45px; }
  .doodle-flower { bottom: 13px; left: -22px; font-size: 37px; }
  .mini-note { right: -20px; max-width: 205px; gap: 7px; padding: 9px 11px; font-size: 9px; }
  .mini-note-check { width: 18px; height: 18px; }
  .about-detail { font-size: 11px; }
  .personality-grid { gap: 6px; margin: 22px 0; }
  .personality-item { align-items: flex-start; flex-direction: column; gap: 7px; padding: 10px 9px; }
  .personality-emoji { width: 27px; height: 27px; font-size: 16px; }
  .personality-item strong { font-size: 10px; }
  .personality-item small { font-size: 8px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .section-heading { margin-bottom: 30px; }
  .feature-card { min-height: 246px; padding: 18px 14px 17px; border-radius: 17px; }
  .feature-icon { width: 43px; height: 43px; margin-bottom: 18px; border-radius: 14px; font-size: 23px; }
  .feature-number { font-size: 7px; }
  .feature-card h3 { font-size: 16px; }
  .feature-card p { min-height: 75px; font-size: 10px; }
  .feature-link { gap: 5px; font-size: 9px; }
  .feature-doodle { right: 6px; bottom: 2px; font-size: 44px; }
  .features-footnote { align-items: flex-start; font-size: 8px; line-height: 1.7; }
  .commands-heading { gap: 10px; margin-bottom: 26px; }
  .commands-heading .section-title { font-size: 35px; }
  .commands-heading .section-lead { font-size: 11px; }
  .command-book-stamp { min-width: 80px; padding: 10px 6px; font-size: 6px; }
  .command-book-stamp strong { font-size: 10px; }
  .command-toolbar { gap: 12px; margin-bottom: 19px; }
  .command-search { min-height: 51px; gap: 9px; padding: 0 14px; border-radius: 14px; }
  .command-search input { font-size: 11px; }
  .command-filters { gap: 6px; }
  .filter-chip { min-height: 31px; padding: 7px 11px; font-size: 9px; }
  .command-grid { grid-template-columns: 1fr; gap: 10px; }
  .command-card { padding: 16px; border-radius: 17px; }
  .command-card-top { margin-bottom: 10px; }
  .command-icon { width: 39px; height: 39px; border-radius: 12px; font-size: 20px; }
  .command-card h3 { font-size: 17px; }
  .command-card-content p { min-height: 0; margin-bottom: 12px; font-size: 10px; }
  .command-card-bottom { padding-top: 10px; }
  .command-card code { font-size: 9px; }
  .commands-bottom { align-items: flex-start; flex-direction: column; gap: 11px; margin-top: 21px; }
  .commands-bottom > span { font-size: 9px; }
  .command-note { font-size: 8px; }
  .diary-grid { grid-template-columns: 1fr; gap: 13px; }
  .diary-card-large { display: block; grid-column: auto; }
  .diary-card-large .diary-art { min-height: 185px; }
  .diary-art { min-height: 175px; }
  .diary-body { padding: 17px 18px 19px; }
  .diary-body h3 { font-size: 17px; }
  .diary-body p { font-size: 10px; }
  .diary-art-message { font-size: 34px; }
  .diary-art-message-small { font-size: 28px; }
  .community-card { padding: 38px 18px 42px; border-radius: 23px; }
  .community-avatar { width: 78px; height: 78px; margin-bottom: 16px; border-width: 4px; border-radius: 25px; }
  .community-card h2 { font-size: clamp(27px, 8vw, 35px); }
  .community-card > p:not(.section-kicker) { font-size: 11px; }
  .community-cloud { font-size: 38px; }
  .cloud-left { top: 17px; left: 4%; }
  .cloud-right { right: 4%; bottom: 18px; }
  .community-sparkle { font-size: 23px; }
  .sparkle-left { left: 6%; }
  .sparkle-right { right: 8%; }
  .faq-grid { gap: 25px; }
  .faq-item summary { gap: 10px; padding: 17px 0; font-size: 12px; }
  .faq-item p { margin-right: 25px; font-size: 10px; }
  .faq-doodle { font-size: 16px; }
  .site-footer { padding-top: 26px; }
  .footer-main { flex-wrap: wrap; gap: 13px; padding-bottom: 23px; }
  .footer-brand .brand-avatar { width: 38px; height: 38px; }
  .footer-brand .brand-copy strong { font-size: 18px; }
  .footer-line { order: 3; width: 100%; margin: 0; font-size: 9px; }
  .footer-top-link { margin-left: auto; font-size: 9px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; font-size: 8px; }
  .toast { right: 15px; bottom: max(15px, env(safe-area-inset-bottom)); left: 15px; max-width: none; text-align: center; }
}

@media (max-width: 370px) {
  .container { width: calc(100% - 24px); }
  .hero-copy h1 { font-size: 38px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .hero-art-wrap { width: 91%; }
  .note-top { left: -13px; }
  .note-bottom { right: -11px; }
  .personality-grid { grid-template-columns: 1fr; }
  .personality-item { align-items: center; flex-direction: row; }
  .feature-card { padding-inline: 12px; }
  .commands-heading { flex-direction: column; }
  .command-book-stamp { align-self: flex-start; }
}