:root {
  color-scheme: light;
  --paper: #f5f4ef;
  --white: #fffefa;
  --ink: #20231f;
  --muted: #777a72;
  --green: #2f5947;
  --green-dark: #234535;
  --lime: #d7ed9f;
  --line: #e6e5dc;
  --serif: Georgia, 'Times New Roman', serif;
  font-family: 'Segoe UI', Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }

.topbar {
  height: 78px;
  padding: 0 max(6.5vw, calc((100vw - 1200px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(32, 35, 31, .08);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font: 750 20px 'Segoe UI', Arial, sans-serif; letter-spacing: -.8px; }
.brand-logo { display: block; width: 35px; height: 35px; }
.brand-accent { color: var(--green); font-weight: 500; }
.top-nav { display: flex; gap: 37px; color: #62665f; font-size: 13px; }
.top-nav a:hover, .text-link:hover { color: var(--green); }
.top-action { padding: 11px 16px; border: 1px solid #d6d7ce; border-radius: 4px; font-size: 12px; font-weight: 600; transition: background .2s, color .2s; }
.top-action:hover { background: var(--green); color: white; }
.top-action span { margin-left: 9px; }

main { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.intro { min-height: 390px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; padding: 39px 4.5% 48px; }
.intro-copy { padding: 4px 0 0 0; }
.eyebrow { margin: 0 0 13px; color: #73776d; font-size: 9px; font-weight: 700; letter-spacing: 1.65px; }
.eyebrow-line { display: inline-block; vertical-align: middle; width: 21px; height: 1px; background: #8eac65; margin: 0 9px 3px 0; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 14px; font: 500 clamp(47px, 6vw, 70px)/.98 var(--serif); letter-spacing: -3.4px; }
h1 span { color: var(--green); font-style: italic; }
.intro-text { max-width: 370px; color: #6d7169; font-size: 13px; line-height: 1.8; margin-bottom: 25px; }
.text-link { font-size: 11px; font-weight: 700; transition: color .2s; }
.text-link span { color: var(--green); margin-left: 7px; }
.intro-art { position: relative; height: 290px; overflow: hidden; background: #e7e9d9; border-radius: 4px; }
.art-sun { position: absolute; width: 83px; height: 83px; border-radius: 50%; background: #efc58a; right: 20%; top: 43px; }
.art-hill { position: absolute; left: -9%; width: 120%; border-radius: 50% 50% 0 0 / 29% 27% 0 0; }
.art-hill-back { height: 154px; bottom: -34px; background: #9bab79; transform: rotate(-7deg); }
.art-hill-front { height: 135px; bottom: -61px; left: 18%; background: #617c59; transform: rotate(9deg); }
.art-camera { position: absolute; width: 238px; height: 150px; left: 50%; top: 46%; transform: translate(-50%, -50%) rotate(-7deg); filter: drop-shadow(0 14px 14px rgba(27, 38, 29, .23)); }
.camera-body { position: absolute; bottom: 11px; width: 238px; height: 118px; border-radius: 15px; background: #242927; }
.camera-top { position: absolute; width: 97px; height: 22px; background: #303633; border-radius: 5px 5px 0 0; top: 1px; left: 69px; }
.camera-flash { position: absolute; top: 0; right: 21px; width: 28px; height: 8px; border-radius: 4px; background: #252a27; }
.camera-viewfinder { position: absolute; top: 8px; left: 94px; width: 50px; height: 18px; border-radius: 4px; background: #111513; }
.camera-lens { position: absolute; top: 21px; left: 71px; width: 99px; height: 99px; display: grid; place-items: center; border: 8px solid #454c48; border-radius: 50%; background: #171d1a; box-shadow: inset 0 0 0 3px #101412; }
.camera-lens span { width: 55px; height: 55px; border: 3px solid #52645c; border-radius: 50%; background: radial-gradient(circle at 35% 31%, #80928c 0, #35463f 16%, #101714 57%); }
.camera-button { position: absolute; right: 19px; top: 18px; width: 12px; height: 12px; border-radius: 50%; background: #b7c77b; }
.art-caption { position: absolute; bottom: 15px; right: 18px; z-index: 1; color: #eff0df; font: italic 11px var(--serif); }

.camera-panel { background: var(--white); border: 1px solid var(--line); padding: 28px 34px 0; box-shadow: 0 8px 32px rgba(46, 49, 39, .025); }
.panel-heading { display: flex; gap: 15px; align-items: flex-start; }
.step-number { color: #9aaa7a; font: italic 16px var(--serif); padding-top: 1px; }
.panel-heading .eyebrow { margin: 0 0 5px; font-size: 8px; }
h2 { margin: 0; font: 500 25px var(--serif); letter-spacing: -.5px; }
.camera-selectors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; align-items: end; margin: 23px 0 25px 32px; }
.select-wrap { display: flex; flex-direction: column; gap: 7px; color: #73776d; font-size: 10px; font-weight: 600; }
.select-wrap select { width: 100%; height: 42px; padding: 0 35px 0 12px; appearance: none; border: 1px solid #e1e2d9; border-radius: 3px; outline: none; color: var(--ink); background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23777a72' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 13px center; font-size: 12px; }
.select-wrap select:focus { border-color: #839d6a; box-shadow: 0 0 0 3px rgba(131, 157, 106, .12); }
.camera-hint { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; margin: 0 0 3px; color: #81847d; font-size: 10px; line-height: 1.6; }
.hint-icon { flex: 0 0 auto; width: 16px; height: 16px; display: grid; place-items: center; border: 1px solid #aeb39f; border-radius: 50%; color: #737a64; font: italic 10px var(--serif); }
.brand-strip { display: flex; gap: 29px; padding: 14px 0 13px 32px; border-top: 1px solid #efefe9; color: #a1a39c; font: 700 8px 'Segoe UI', Arial, sans-serif; letter-spacing: 1.5px; }

.scenarios { padding: 55px 3.2% 36px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 21px; }
.section-side-note { margin: 0 0 3px; color: #888b83; font: italic 12px/1.6 var(--serif); text-align: right; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.scenario-card { position: relative; min-height: 137px; display: flex; flex-direction: column; align-items: flex-start; justify-content: space-between; padding: 17px 18px 15px; text-align: left; color: var(--ink); background: #eeeee7; border: 1px solid transparent; border-radius: 3px; cursor: pointer; transition: border-color .2s, background .2s, transform .2s; }
.scenario-card:hover { transform: translateY(-2px); background: #e9ebdf; }
.scenario-card[aria-pressed="true"] { border-color: var(--green); background: #edf1e8; }
.scenario-top { width: 100%; display: flex; align-items: center; justify-content: space-between; }
.scenario-icon { width: 39px; height: 39px; display: grid; place-items: center; border: 1px solid #d5deca; border-radius: 11px; color: var(--green); background: #e4e9dc; }
.scenario-icon svg { width: 21px; height: 21px; }
.scenario-arrow { color: #9b9e93; font-size: 15px; transition: transform .2s; }
.scenario-card[aria-pressed="true"] .scenario-arrow { transform: rotate(45deg); color: var(--green); }
.scenario-name { margin-top: 13px; font: 500 18px var(--serif); }
.scenario-description { margin-top: 4px; color: #84877f; font-size: 10px; }

.guide-section { min-height: 182px; margin: 0 3.2% 61px; padding: 28px 30px; background: var(--green); color: white; border-radius: 4px; scroll-margin-top: 20px; }
.guide-empty { min-height: 124px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.empty-icon { margin-bottom: 7px; color: var(--lime); font-size: 18px; }
.guide-empty p { margin-bottom: 4px; font: 500 17px var(--serif); }
.guide-empty > span:last-child { color: #c1d0c3; font-size: 10px; }
.guide-content[hidden] { display: none; }
.guide-title-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.guide-title-row .eyebrow { margin-bottom: 5px; color: #bbccb9; font-size: 8px; }
.guide-title-row h2 { color: white; font-size: 24px; }
.copy-button { padding: 10px 12px; color: #f6f7ed; background: transparent; border: 1px solid rgba(255,255,255,.32); border-radius: 3px; font-size: 10px; cursor: pointer; transition: background .2s; }
.copy-button:hover { background: rgba(255,255,255,.12); }
.copy-button span { margin-right: 7px; }
.guide-layout { display: grid; grid-template-columns: 1fr 245px; gap: 20px; }
.settings-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.setting-card { min-height: 82px; padding: 12px; background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.1); border-radius: 3px; }
.setting-label { margin-bottom: 8px; color: #c5d1c5; font-size: 9px; }
.setting-value { font: 500 17px var(--serif); }
.setting-detail { margin-top: 4px; color: #bed0bf; font-size: 9px; }
.guide-note { padding: 13px 15px; color: #27382b; background: var(--lime); border-radius: 3px; }
.note-icon { color: #547044; font-size: 14px; }
.note-label { margin: 8px 0 5px; color: #56664a; font-size: 8px; font-weight: 700; letter-spacing: 1px; }
.note-text { margin: 0; font: 500 14px/1.45 var(--serif); }
.divider { height: 1px; margin: 12px 0 10px; background: rgba(49, 73, 41, .18); }
.note-small { margin: 0; color: #5d6754; font-size: 9px; line-height: 1.6; }

footer { min-height: 72px; padding: 0 max(6.5vw, calc((100vw - 1200px) / 2)); display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(32, 35, 31, .08); }
.footer-brand { font-size: 17px; }
.footer-brand .brand-logo { width: 29px; height: 29px; }
footer > p { margin: 0; color: #797d74; font: italic 12px var(--serif); }
.footer-note { color: #73776d; font-size: 11px; letter-spacing: .2px; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 5; padding: 11px 17px; border-radius: 4px; color: white; background: #20231f; font-size: 12px; opacity: 0; pointer-events: none; transform: translate(-50%, 10px); transition: opacity .2s, transform .2s; }
.toast.visible { opacity: 1; transform: translate(-50%, 0); }

@media (min-width: 1256px) {
  .topbar, footer { padding-right: calc((100vw - 1200px) / 2); padding-left: calc((100vw - 1200px) / 2); }
}
@media (max-width: 760px) {
  .topbar { height: 66px; padding: 0 22px; }
  .top-nav { display: none; }
  main { padding: 0 18px; }
  .intro { min-height: unset; padding: 49px 2% 33px; grid-template-columns: 1fr; gap: 25px; }
  h1 { font-size: 57px; }
  .intro-art { height: 230px; }
  .camera-panel { padding: 23px 20px 0; }
  .camera-selectors { grid-template-columns: 1fr 1fr; margin-left: 0; }
  .brand-strip { padding-left: 0; gap: 18px; }
  .scenarios { padding: 42px 0 26px; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-section { margin: 0 0 43px; padding: 23px 18px; }
  .guide-layout { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .top-action { padding: 9px 10px; font-size: 10px; }
  .brand { font-size: 18px; }
  .brand-logo { width: 31px; height: 31px; }
  .section-heading { align-items: flex-start; gap: 10px; }
  .section-side-note { font-size: 10px; }
  .panel-heading { gap: 10px; }
  h2 { font-size: 22px; }
  .scenario-grid { gap: 8px; }
  .scenario-card { min-height: 126px; padding: 13px; }
  .scenario-name { font-size: 16px; }
  .scenario-description { font-size: 9px; }
  .settings-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-title-row { align-items: flex-start; gap: 12px; }
  .copy-button { max-width: 122px; line-height: 1.5; }
  footer { padding: 0 19px; }
  footer > p { display: none; }
}

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