:root {
  --ink: #182621;
  --muted: #66726d;
  --cream: #f7f4ec;
  --paper: #fffdf8;
  --mint: #b8f4d7;
  --mint-strong: #3ddc97;
  --mint-dark: #16603f;
  --line: #d9ded8;
  --orange: #ff8a56;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }

.site-header {
  width: min(1180px, calc(100% - 48px));
  height: 86px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(24, 38, 33, .12);
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 16px; font-weight: 800; letter-spacing: .02em; }
.brand-mark { position: relative; display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: var(--ink); transform: rotate(-3deg); }
.brand-mark::before { content: ""; width: 15px; height: 18px; border: 2px solid var(--mint); border-radius: 2px; }
.brand-mark i { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--orange); right: 5px; bottom: 5px; }
.header-link { color: var(--muted); font-size: 13px; font-weight: 700; border-bottom: 1px solid currentColor; padding-bottom: 3px; }

.hero {
  width: min(1180px, calc(100% - 48px));
  min-height: 660px;
  margin: 0 auto;
  padding: 62px 0 74px;
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 78px;
  align-items: center;
}
.eyebrow { margin: 0 0 20px; display: flex; align-items: center; gap: 9px; color: var(--mint-dark); font-size: 10px; font-weight: 900; letter-spacing: .2em; }
.eyebrow > span { width: 20px; height: 2px; background: currentColor; }
.hero h1, .section-intro h2, .how-copy h2 { margin: 0; letter-spacing: -.06em; font-weight: 900; line-height: 1.12; }
.hero h1 { font-size: clamp(48px, 5vw, 70px); }
.hero h1 em { color: var(--mint-dark); font-style: normal; position: relative; white-space: nowrap; }
.hero h1 em::after { content: ""; position: absolute; z-index: -1; height: 13px; left: -3px; right: -6px; bottom: 4px; background: var(--mint); transform: rotate(-1deg); }
.hero-lead { margin: 28px 0 25px; color: var(--muted); font-size: 16px; font-weight: 600; line-height: 1.9; }
.usecase-row { display: flex; flex-wrap: wrap; gap: 7px; margin: -7px 0 17px; }
.usecase-row span { padding: 5px 10px; border-radius: 5px; background: #e6eee9; color: #415049; font-size: 10px; font-weight: 800; }
.usecase-row span:nth-child(2) { background: #ffe3d5; }
.usecase-row span:nth-child(3) { background: #dceee5; }
.usecase-row span:nth-child(4) { background: #fff0b8; }
.promise-list { display: flex; flex-wrap: wrap; gap: 9px; margin: 0; padding: 0; list-style: none; }
.promise-list li { padding: 8px 13px; border: 1px solid #bdc8c2; border-radius: 99px; background: rgba(255,255,255,.5); color: #415049; font-size: 12px; font-weight: 800; }
.promise-list li::before { content: "✓"; margin-right: 6px; color: var(--mint-dark); }

.converter-card { position: relative; padding: 30px; border: 1px solid #ccd3ce; border-radius: 22px; background: var(--paper); box-shadow: 12px 14px 0 rgba(24, 38, 33, .08); }
.converter-card::before { content: ""; position: absolute; width: 46px; height: 15px; top: -8px; right: 55px; background: var(--mint); transform: rotate(3deg); opacity: .8; }
.card-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.card-heading > div { display: flex; align-items: center; gap: 11px; }
.card-heading h2 { margin: 0; font-size: 18px; }
.step-number { color: var(--mint-dark); font: 900 11px/1 monospace; }
.local-badge { padding: 6px 9px; background: #e9f9f0; color: var(--mint-dark); border-radius: 6px; font-size: 10px; font-weight: 800; }

.drop-zone { min-height: 200px; padding: 25px; border: 1.5px dashed #9ea9a3; border-radius: 14px; background: #faf9f4; cursor: pointer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; text-align: center; transition: .2s ease; outline: none; }
.drop-zone:hover, .drop-zone:focus-visible, .drop-zone.is-dragging { border-color: var(--mint-dark); background: #f0fbf5; transform: translateY(-1px); }
.drop-zone strong { font-size: 14px; }
.drop-zone > span { color: var(--muted); font-size: 12px; }
.drop-zone small { margin-top: 10px; color: #89928e; font-size: 10px; }
.upload-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 4px; border-radius: 50%; background: var(--mint); color: var(--ink) !important; font-size: 25px !important; font-weight: 300; }
.drop-zone.has-files { min-height: 200px; justify-content: flex-start; text-align: left; }
.selected-files-heading { width: 100%; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.selected-files-heading span { color: var(--muted); font-size: 10px; }
.mobile-upload-copy { display: none; }
.selected-image-grid { width: 100%; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.selected-image-grid figure { min-width: 0; margin: 0; }
.selected-image-grid img { width: 100%; aspect-ratio: 1; display: block; object-fit: cover; border-radius: 7px; background: #ecece8; }
.selected-image-grid figcaption { margin-top: 4px; overflow: hidden; color: var(--muted); font-size: 8px; text-overflow: ellipsis; white-space: nowrap; }

.settings-row { display: grid; grid-template-columns: 1.3fr .7fr; gap: 16px; margin: 18px 0; }
.settings-row fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.settings-row legend, .color-setting > span:first-child { display: block; margin-bottom: 8px; color: #52605a; font-size: 10px; font-weight: 800; }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); padding: 3px; border: 1px solid var(--line); border-radius: 9px; background: #f3f2ed; }
.segmented label { padding: 8px 6px; border-radius: 6px; color: var(--muted); font-size: 11px; font-weight: 800; text-align: center; cursor: pointer; }
.segmented label.selected { background: var(--paper); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.resolution-setting { grid-column: 1 / -1; }
.resolution-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.resolution-options label { position: relative; min-height: 52px; padding: 9px 12px; display: flex; flex-direction: column; justify-content: center; border: 1px solid var(--line); border-radius: 9px; background: #f3f2ed; color: var(--muted); cursor: pointer; }
.resolution-options label.selected { border-color: var(--mint-dark); background: #eefaf3; color: var(--ink); box-shadow: inset 0 0 0 1px var(--mint-dark); }
.resolution-options input { position: absolute; opacity: 0; pointer-events: none; }
.resolution-options strong { font-size: 13px; }
.resolution-options span { margin-top: 3px; font-size: 9px; font-weight: 700; }
.resolution-help { margin: 7px 2px 0; color: #718078; font-size: 9px; font-weight: 600; line-height: 1.55; }
.color-control { height: 38px; padding: 5px 9px 5px 6px; display: flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 9px; background: #f3f2ed; color: var(--muted); font: 700 10px/1 monospace; }
.color-control input { width: 27px; height: 27px; padding: 0; border: 0; border-radius: 5px; background: transparent; cursor: pointer; }

.convert-button { width: 100%; height: 54px; padding: 0 20px; border: 0; border-radius: 10px; background: var(--ink); color: white; display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 14px; font-weight: 900; cursor: pointer; transition: .2s ease; }
.convert-button:hover:not(:disabled) { background: var(--mint-dark); transform: translateY(-1px); }
.convert-button:disabled { cursor: not-allowed; opacity: .35; }
.convert-button > span:last-child { font-size: 20px; }
.spinner { width: 17px; height: 17px; border: 2px solid rgba(255,255,255,.3); border-top-color: white; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.privacy-note { margin: 11px 0 0; color: #718078; font-size: 10px; font-weight: 700; text-align: center; }
.privacy-note span { color: var(--mint-strong); font-size: 8px; }
.status-message:empty { display: none; }
.error-message { margin: 12px 0 0; padding: 10px 12px; border-radius: 7px; background: #fff0ea; color: #9e3e25; font-size: 11px; font-weight: 700; white-space: pre-line; }
.result-list { margin-top: 17px; }
.result-list-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.result-list-heading h3 { margin: 0; color: var(--mint-dark); font-size: 12px; }
.batch-save-button { min-height: 38px; padding: 8px 13px; border: 0; border-radius: 7px; background: var(--ink); color: white; font: inherit; font-size: 10px; font-weight: 800; cursor: pointer; }
.batch-save-button:disabled { cursor: wait; opacity: .6; }
.batch-save-help { margin: 7px 0 10px; color: var(--muted); font-size: 9px; line-height: 1.6; }
.result-panel { margin-top: 17px; padding: 14px; display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; border: 1px solid #b9dfca; border-radius: 11px; background: #eefaf3; }
.result-list .result-panel { margin-top: 9px; }
.result-check { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--mint-strong); color: var(--ink); font-weight: 900; }
.result-copy { display: flex; flex-direction: column; gap: 3px; }
.result-copy strong { font-size: 12px; }
.result-copy span { color: var(--muted); font-size: 9px; }
.result-video { grid-column: 1 / -1; width: 100%; max-height: 360px; border-radius: 9px; background: #17221e; }
.result-actions { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr auto; gap: 9px; }
.share-button, .download-button { min-height: 42px; padding: 9px 14px; display: grid; place-items: center; border: 0; border-radius: 7px; font: inherit; font-size: 11px; font-weight: 800; cursor: pointer; }
.share-button { background: var(--mint-dark); color: white; }
.share-button:disabled { cursor: wait; opacity: .6; }
.download-button { border: 1px solid #8ebaa3; background: white; color: var(--mint-dark); }
.share-help { grid-column: 1 / -1; color: var(--muted); font-size: 9px; line-height: 1.6; text-align: center; }

.x-benefit { width: min(1080px, calc(100% - 48px)); margin: 12px auto 75px; padding: 55px 60px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: center; border: 1px solid #cbd3cd; border-radius: 18px; background: #eef8f2; }
.x-benefit-copy .eyebrow { margin-bottom: 16px; }
.x-benefit-copy h2 { margin: 0 0 24px; font-size: clamp(32px, 4vw, 48px); font-weight: 900; line-height: 1.2; letter-spacing: -.05em; }
.x-benefit-copy > p:not(.eyebrow) { margin: 0 0 12px; color: #506059; font-size: 13px; font-weight: 600; line-height: 1.85; }
.x-benefit-copy strong { color: var(--mint-dark); }
.x-benefit-copy small { display: block; margin-top: 18px; color: #7b8781; font-size: 9px; line-height: 1.7; }
.profile-demo { padding: 22px; border: 1px solid #aebbb4; border-radius: 14px; background: var(--paper); box-shadow: 8px 9px 0 rgba(22, 96, 63, .12); }
.demo-app-header { display: grid; grid-template-columns: auto 1fr auto auto; gap: 9px; align-items: center; }
.demo-app-header span, .demo-app-header i { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: #edf0ee; color: var(--ink); font: 800 12px/1 sans-serif; font-style: normal; }
.demo-app-header svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.demo-app-header strong { font-size: 11px; }
.demo-tabs { margin-top: 15px; display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid #ccd3cf; color: #8a948f; font-size: 12px; font-weight: 800; text-align: center; }
.demo-tabs > span, .demo-tabs strong { min-height: 38px; padding: 8px 3px; display: flex; align-items: center; justify-content: center; gap: 3px; }
.demo-tabs strong { color: var(--ink); border-bottom: 3px solid var(--mint-dark); }
.demo-tabs svg { width: 15px; height: 15px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.demo-tabs strong span { white-space: nowrap; }
.demo-video-list { display: grid; margin-top: 5px; }
.demo-video-row { padding: 7px 0; display: grid; grid-template-columns: minmax(92px, 38%) 1fr; gap: 10px; align-items: center; border-bottom: 1px solid #e1e5e2; }
.demo-video-row:last-child { border-bottom: 0; }
.demo-thumbnail { position: relative; aspect-ratio: 1.65; overflow: hidden; display: grid; place-items: center; border-radius: 8px; background: var(--mint); color: #175f44; }
.demo-thumbnail svg { width: 56%; height: 64%; overflow: visible; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.demo-thumbnail.demo-pet svg circle, .demo-thumbnail.demo-pet svg path { fill: currentColor; stroke: none; }
.demo-thumbnail i { position: absolute; left: 5px; bottom: 5px; padding: 3px 4px; border-radius: 4px; background: rgba(24,38,33,.68); color: white; font: 800 8px/1 sans-serif; font-style: normal; }
.demo-thumbnail.demo-food { background: #ffd8c5; color: #9b492f; }
.demo-thumbnail.demo-view { background: #cfe7dc; color: #275f4a; }
.demo-thumbnail.demo-view svg circle { fill: #f4a83a; stroke: none; }
.demo-thumbnail.demo-view svg path { fill: rgba(39,95,74,.16); }
.demo-thumbnail.demo-art { background: #ffecad; color: #765b17; }
.demo-thumbnail.demo-art svg circle { fill: #f4a83a; stroke: none; }
.demo-video-copy { min-width: 0; display: grid; gap: 5px; }
.demo-video-copy b { overflow: hidden; color: var(--ink); font-size: 10px; line-height: 1.4; text-overflow: ellipsis; white-space: nowrap; }
.demo-video-copy small { color: #7b8781; font-size: 8px; }
.profile-demo > p { margin: 14px 0 0; color: var(--muted); font-size: 10px; font-weight: 700; text-align: center; }
.profile-demo > p b { color: var(--mint-dark); }

.ad-slot { width: min(728px, calc(100% - 48px)); height: 90px; margin: 0 auto; border: 1px dashed #c7ccc7; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #9ba19e; background: rgba(255,255,255,.32); }
.ad-slot span { font: 700 8px/1 monospace; letter-spacing: .18em; }
.ad-slot p { margin: 8px 0 0; font-size: 10px; }
.ad-slot-top { margin-bottom: 105px; }
.ad-slot-bottom { margin-top: 100px; }

.about-section, .faq-section { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }
.section-intro h2, .how-copy h2 { font-size: clamp(38px, 4vw, 54px); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 45px; }
.feature-grid article { position: relative; min-height: 310px; padding: 22px; overflow: hidden; border: 1px solid #d6d8d2; border-radius: 14px; background: var(--paper); }
.feature-index { position: absolute; right: 18px; top: 16px; color: #a5ada9; font: 800 10px/1 monospace; }
.feature-shape { height: 135px; margin: 5px 0 20px; display: grid; place-items: center; }
.shape-still i { position: absolute; width: 82px; height: 92px; border: 2px solid var(--ink); background: var(--mint); transform: rotate(-7deg); }
.shape-still i:last-child { background: white; transform: translate(22px, 8px) rotate(5deg); }
.shape-still i:last-child::after { content: ""; position: absolute; inset: 14px; background: linear-gradient(145deg, var(--orange) 0 40%, var(--mint) 41% 68%, var(--ink) 69%); opacity: .75; }
.shape-clean, .shape-local { align-content: center; gap: 10px; }
.watermark-sample { position: relative; width: 142px; height: 67px; display: grid; place-items: center; overflow: hidden; border: 2px solid var(--ink); border-radius: 8px; background: linear-gradient(145deg, #f4a36f 0 38%, #9cdabd 39% 68%, #29453b 69%); box-shadow: 7px 7px 0 var(--mint); }
.watermark-sample::before { content: ""; position: absolute; left: 17px; bottom: 10px; width: 30px; height: 30px; border-radius: 50%; background: #ffe6a1; box-shadow: 75px -24px 0 -7px rgba(255,255,255,.72); }
.watermark-sample b { position: relative; z-index: 1; color: rgba(255,255,255,.76); font: 900 14px/1 monospace; letter-spacing: .04em; text-shadow: 0 1px 3px rgba(0,0,0,.28); }
.watermark-sample i { position: absolute; z-index: 2; width: 112px; height: 4px; border-radius: 4px; background: #d6543a; transform: rotate(-12deg); }
.visual-caption { color: var(--mint-dark); font-size: 12px; line-height: 1; letter-spacing: .05em; }
.local-visual { display: flex; align-items: center; gap: 19px; }
.device-frame { position: relative; width: 112px; height: 66px; border: 2px solid var(--ink); border-radius: 9px; background: white; box-shadow: 6px 6px 0 var(--mint); }
.device-frame::after { content: ""; position: absolute; left: 50%; bottom: -8px; width: 34px; height: 7px; border: 2px solid var(--ink); border-top: 0; border-radius: 0 0 5px 5px; background: white; transform: translateX(-50%); }
.device-frame i { position: absolute; left: 13px; top: 15px; width: 36px; height: 31px; border-radius: 4px; background: linear-gradient(145deg, var(--orange) 0 42%, var(--mint) 43% 70%, var(--ink) 71%); opacity: .82; }
.device-frame b { position: absolute; right: 12px; top: 15px; width: 31px; height: 31px; display: grid; place-items: center; border-radius: 50%; background: var(--mint); color: var(--mint-dark); font: 900 18px/1 sans-serif; }
.blocked-cloud { position: relative; width: 59px; height: 48px; margin-top: 4px; }
.blocked-cloud::before { content: ""; position: absolute; left: 4px; bottom: 5px; width: 50px; height: 25px; border: 2px solid #7e8984; border-radius: 18px; background: var(--paper); }
.blocked-cloud::after { content: ""; position: absolute; left: 18px; top: 3px; width: 25px; height: 25px; border: 2px solid #7e8984; border-bottom-color: transparent; border-radius: 50%; background: var(--paper); }
.blocked-cloud i { position: absolute; z-index: 2; left: 22px; top: 13px; color: #66726d; font: 900 20px/1 sans-serif; }
.blocked-cloud b { position: absolute; z-index: 3; left: -2px; top: 22px; width: 65px; height: 4px; border-radius: 4px; background: #d6543a; transform: rotate(-38deg); }
.feature-grid h3 { margin: 0 0 10px; font-size: 18px; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 12px; font-weight: 600; line-height: 1.8; }

.how-section { width: min(1180px, calc(100% - 48px)); margin: 120px auto; padding: 70px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 85px; align-items: center; border-radius: 18px; background: var(--ink); color: white; }
.eyebrow.light { color: var(--mint); }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { min-height: 82px; padding: 18px 0; display: flex; align-items: center; gap: 20px; border-bottom: 1px solid rgba(255,255,255,.15); }
.steps li:last-child { border-bottom: 0; }
.steps li > span { width: 34px; height: 34px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--mint); border-radius: 50%; color: var(--mint); font: 800 11px/1 monospace; }
.steps strong { display: block; margin-bottom: 4px; font-size: 15px; }
.steps p { margin: 0; color: #aebbb5; font-size: 11px; }

.section-intro.compact h2 { font-size: 38px; }
.faq-list { margin-top: 35px; border-top: 1px solid #cbd0cc; }
.faq-list details { border-bottom: 1px solid #cbd0cc; }
.faq-list summary { padding: 23px 4px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; list-style: none; font-size: 14px; font-weight: 800; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--mint-dark); font-size: 20px; font-weight: 300; transition: transform .2s; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { margin: -5px 4px 22px; color: var(--muted); font-size: 12px; line-height: 1.8; }

footer { width: min(1180px, calc(100% - 48px)); margin: 80px auto 0; padding: 45px 0; display: grid; grid-template-columns: 1fr auto auto auto; gap: 28px; align-items: center; border-top: 1px solid #cdd2ce; color: var(--muted); }
.footer-brand { color: var(--ink); }
footer p, footer small { margin: 0; font-size: 10px; }
.footer-links { display: flex; gap: 16px; font-size: 10px; font-weight: 700; }
.footer-links a { border-bottom: 1px solid currentColor; }

.legal-page { min-height: 100vh; padding-bottom: 80px; }
.legal-header { width: min(920px, calc(100% - 48px)); height: 86px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(24, 38, 33, .12); }
.legal-header > a:last-child { color: var(--muted); font-size: 12px; font-weight: 800; border-bottom: 1px solid currentColor; }
.legal-card { width: min(820px, calc(100% - 48px)); margin: 64px auto 0; padding: 58px 64px; border: 1px solid #d2d8d3; border-radius: 18px; background: var(--paper); box-shadow: 10px 12px 0 rgba(24, 38, 33, .06); }
.legal-card h1 { margin: 0; font-size: clamp(36px, 5vw, 54px); line-height: 1.2; letter-spacing: -.05em; }
.legal-updated { margin: 12px 0 42px; color: var(--muted); font-size: 11px; }
.legal-card section { padding: 28px 0; border-top: 1px solid var(--line); }
.legal-card h2 { margin: 0 0 12px; font-size: 18px; }
.legal-card section p, .legal-card li { color: #536159; font-size: 13px; line-height: 1.9; }
.legal-card section p { margin: 0 0 10px; }
.legal-card ul { margin: 12px 0 0; padding-left: 22px; }
.legal-card li + li { margin-top: 6px; }
.legal-card li a { color: var(--mint-dark); text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 48px; padding-top: 48px; }
  .hero-copy { text-align: center; }
  .eyebrow, .promise-list, .usecase-row { justify-content: center; }
  .converter-card { max-width: 650px; width: 100%; margin: 0 auto; }
  .feature-grid { grid-template-columns: 1fr; }
  .x-benefit { grid-template-columns: 1fr; gap: 40px; }
  .profile-demo { width: min(420px, 100%); margin: 0 auto; }
  .feature-grid article { min-height: 225px; padding-right: 45%; }
  .feature-shape { position: absolute; width: 40%; right: 0; top: 35px; }
  .how-section { grid-template-columns: 1fr; gap: 35px; padding: 55px; }
  .how-copy { text-align: center; }
  .how-copy .eyebrow { justify-content: center; }
}

@media (max-width: 600px) {
  .site-header { width: calc(100% - 30px); height: 68px; }
  .header-link { display: none; }
  .hero { width: calc(100% - 28px); padding: 40px 0 58px; gap: 36px; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 14px; }
  .desktop-break { display: none; }
  .converter-card { padding: 20px; border-radius: 17px; box-shadow: 7px 8px 0 rgba(24,38,33,.08); }
  .drop-zone { min-height: 180px; }
  .desktop-upload-copy { display: none; }
  .mobile-upload-copy { display: block; }
  .selected-files-heading { align-items: center; flex-direction: column; gap: 3px; text-align: center; }
  .selected-image-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .result-list-heading { align-items: stretch; flex-direction: column; }
  .batch-save-button { width: 100%; }
  .batch-save-help { text-align: center; }
  .settings-row { grid-template-columns: 1fr; }
  .resolution-options { grid-template-columns: 1fr; }
  .result-panel { grid-template-columns: auto 1fr; }
  .result-actions { grid-template-columns: 1fr; }
  .ad-slot { width: calc(100% - 28px); height: 70px; }
  .x-benefit { width: calc(100% - 28px); margin-bottom: 58px; padding: 38px 24px; }
  .x-benefit-copy { text-align: center; }
  .x-benefit-copy .eyebrow { justify-content: center; }
  .x-benefit-copy h2 { font-size: 34px; }
  .ad-slot-top { margin-bottom: 75px; }
  .about-section, .faq-section { width: calc(100% - 32px); }
  .section-intro { text-align: center; }
  .section-intro .eyebrow { justify-content: center; }
  .feature-grid article { min-height: 300px; padding: 20px; padding-top: 175px; }
  .feature-shape { width: 100%; height: 125px; top: 24px; }
  .how-section { width: calc(100% - 28px); margin: 80px auto; padding: 45px 24px; }
  .section-intro.compact h2 { font-size: 32px; }
  footer { width: calc(100% - 32px); grid-template-columns: 1fr; gap: 14px; text-align: center; }
  .footer-brand { justify-content: center; }
  .footer-links { justify-content: center; }
  .legal-header { width: calc(100% - 30px); height: 68px; }
  .legal-card { width: calc(100% - 28px); margin-top: 28px; padding: 36px 22px; }
  .legal-card h1 { font-size: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}