:root {
    --canvas: #f4f3ed;
    --paper: #fffef9;
    --text: #242924;
    --muted: #626a61;
    --accent: #375642;
    --accent-hover: #253f2f;
    --line: #d5d9cd;
    --soft: #e8ebdf;
    --max-width: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--canvas); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 2px; }
h1, h2, h3, p, figure, dl { margin: 0; }
h1, h2 { text-wrap: balance; }
p { text-wrap: pretty; }
.page-shell { width: min(calc(100% - 80px), var(--max-width)); margin-inline: auto; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 5; padding: 8px 16px; background: var(--text); color: white; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }

.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 98px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { position: relative; display: grid; width: 40px; height: 42px; place-items: center; border: 1px solid var(--accent); border-radius: 3px; color: var(--accent); }
.brand-mark::before, .brand-mark::after { position: absolute; width: 14px; height: 3px; background: var(--canvas); content: ""; }
.brand-mark::before { top: -2px; left: 12px; }
.brand-mark::after { bottom: -2px; left: 12px; }
.brand-mark span { font-family: "Songti SC", SimSun, serif; font-size: 24px; line-height: 1; }
.brand-name { font-size: 18px; font-weight: 650; line-height: 1.3; }
.brand-name small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; font-weight: 400; letter-spacing: .06em; }
.site-nav { display: flex; gap: 32px; margin-left: auto; }
.site-nav a { color: var(--muted); font-size: 13px; transition: color .2s ease; }
.site-nav a:hover { color: var(--accent); }
.header-contact { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; margin-left: 20px; padding: 9px 16px; border: 1px solid #a9b6a4; border-radius: 3px; color: var(--accent); font-size: 13px; font-weight: 600; transition: background .2s ease, border-color .2s ease; }
.header-contact:hover { background: var(--soft); border-color: var(--accent); }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(32px, 5vw, 76px); padding-top: 64px; padding-bottom: 64px; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 20px; color: var(--accent); font-size: 12px; font-weight: 600; letter-spacing: .07em; }
.eyebrow > span { width: 7px; height: 7px; background: var(--accent); border-radius: 1px; }
h1 { font-size: clamp(38px, 4.1vw, 58px); font-weight: 650; line-height: 1.3; letter-spacing: -.04em; }
h1 span { color: var(--accent); }
.hero-summary { max-width: 29em; margin-top: 24px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 48px; padding: 0 21px; border: 1px solid transparent; border-radius: 3px; font-size: 13px; font-weight: 600; transition: background .2s ease, transform .2s ease; }
.button-primary { background: var(--accent); color: var(--paper); }
.button-primary:hover { background: var(--accent-hover); }
.button:active { transform: translateY(1px); }
.text-link { display: inline-flex; align-items: center; gap: 14px; color: var(--accent); font-size: 13px; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.availability { margin-top: 16px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.hero-footnote { display: flex; flex-wrap: wrap; gap: 0; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.hero-footnote span + span { margin-left: 19px; padding-left: 19px; border-left: 1px solid #bec6b7; }

.scan-demo { overflow: hidden; border: 1px solid #c9d0c0; border-radius: 6px; background: #e5e9dd; }
.demo-topline { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; border-bottom: 1px solid #c9d0c0; color: #485742; font-size: 12px; }
.demo-indicator { width: 6px; height: 6px; border-radius: 50%; background: #6d835a; }
.scan-stage { position: relative; isolation: isolate; width: 100%; height: 356px; overflow: hidden; background-image: linear-gradient(#92a58414 1px, transparent 1px), linear-gradient(90deg, #92a58414 1px, transparent 1px); background-size: 26px 26px; }
.scan-stage::before { position: absolute; inset: auto 12% 24px; z-index: -1; height: 20px; border-radius: 50%; background: #344b2c20; filter: blur(10px); content: ""; }
.scan-paper { position: absolute; top: 62px; left: 12%; width: 51%; height: 240px; padding: 22px; transform: rotate(-7deg); border: 1px solid #d7d9cc; border-radius: 2px; background: var(--paper); box-shadow: 3px 8px 15px #28372512; }
.paper-heading { color: #37402f; font-family: "Songti SC", SimSun, serif; font-size: 17px; font-weight: 600; letter-spacing: 2px; }
.paper-rule { width: 70%; height: 3px; margin-top: 8px; background: #dadfd3; }
.paper-rule-long { width: 90%; margin-top: 12px; }
.paper-rule-short { width: 43%; }
.paper-text { margin-top: 18px; color: #6c7464; font-family: "Songti SC", SimSun, serif; font-size: 11px; line-height: 2; letter-spacing: 1px; }
.paper-table { display: grid; grid-template-columns: repeat(3, 1fr); height: 32px; margin-top: 13px; border-top: 1px solid #dbe0d3; border-left: 1px solid #dbe0d3; }
.paper-table span { border-right: 1px solid #dbe0d3; border-bottom: 1px solid #dbe0d3; }
.scan-corner { position: absolute; width: 12px; height: 12px; border-color: #678c59; border-style: solid; }
.corner-tl { top: 12px; left: 12px; border-width: 1px 0 0 1px; }
.corner-tr { top: 12px; right: 12px; border-width: 1px 1px 0 0; }
.corner-bl { bottom: 12px; left: 12px; border-width: 0 0 1px 1px; }
.corner-br { bottom: 12px; right: 12px; border-width: 0 1px 1px 0; }
.scan-beam { position: absolute; top: 15px; left: 12px; right: 12px; height: 1px; background: #819a5c; box-shadow: 0 -5px 18px 4px #8fae652e; animation: scan-line 5s ease-in-out infinite; pointer-events: none; }
.scan-lens { position: absolute; top: 37px; right: 10%; z-index: 2; width: 43%; height: 23px; border: 1px solid #2a3328; border-radius: 5px; background: #3d4739; box-shadow: 2px 3px 0 #273222; }
.scan-lens span { position: absolute; left: 12px; bottom: 6px; width: 7px; height: 7px; border-radius: 50%; border: 2px solid #1d241c; background: #adc49f; }
.scan-stand { position: absolute; top: 56px; right: 13%; width: 12px; height: 233px; border-right: 3px solid #252e21; background: #64705a; }
.scan-base { position: absolute; right: 8%; bottom: 47px; width: 25%; height: 17px; border: 1px solid #38422f; border-radius: 50%; background: #64705a; }
.text-result { position: absolute; right: 6%; bottom: 79px; z-index: 3; width: 49%; padding: 15px 17px; border: 1px solid #becbb2; border-radius: 4px; background: #f2f4eb; box-shadow: 3px 5px 12px #3e573a0d; }
.result-label { display: block; color: #69765f; font-size: 10px; }
.text-result p { margin: 4px 0; color: #334b2c; font-size: 17px; font-weight: 600; }
.text-result > span:last-child { color: #6b7660; font-size: 10px; letter-spacing: 1px; }
.scan-demo figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; padding: 12px 24px; border-top: 1px solid #c9d0c0; color: #63715b; font-size: 10px; }

.scenarios { padding-top: 55px; padding-bottom: 86px; border-top: 1px solid var(--line); }
.section-heading { max-width: 660px; margin-bottom: 38px; }
.section-heading .eyebrow, .subscription-intro .eyebrow, .contact-section .eyebrow { margin-bottom: 13px; }
h2 { font-size: clamp(28px, 3vw, 38px); font-weight: 600; line-height: 1.4; letter-spacing: -.02em; }
.section-heading > p:last-child { max-width: 39em; margin-top: 14px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.section-heading > p.eyebrow:last-child { margin-top: 0; }
.scene-list { border-top: 1px solid var(--line); }
.scene-item { display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: start; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.item-number { padding-top: 3px; color: #7a8770; font-family: Georgia, "Times New Roman", serif; font-size: 18px; font-style: italic; }
.scene-item h3 { font-size: 17px; font-weight: 600; }
.scene-item p { max-width: 46em; margin-top: 5px; color: var(--muted); font-size: 13px; }
.scene-tag { margin-top: 3px; padding: 2px 8px; border: 1px solid var(--line); border-radius: 2px; color: var(--muted); font-size: 11px; white-space: nowrap; }
.subscription-section { padding: 76px 0 84px; border-block: 1px solid #cfd5c7; background: var(--soft); }
.subscription-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 12%; }
.subscription-intro > p:not(.eyebrow) { max-width: 24em; margin-top: 18px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.subscription-intro .text-link { margin-top: 27px; }
.subscription-list > div { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 20px; padding: 21px 0; border-bottom: 1px solid #c8d1c1; }
.subscription-list > div:first-child { padding-top: 0; }
.subscription-list dt { font-size: 14px; font-weight: 600; }
.subscription-list dt span { margin-right: 12px; color: #79896f; font-family: Georgia, serif; font-size: 12px; font-style: italic; font-weight: 400; }
.subscription-list dd { margin: 0; color: #5b6655; font-size: 13px; line-height: 1.9; }
.onboarding { padding-top: 76px; padding-bottom: 76px; }
.compact-heading { margin-bottom: 30px; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 42px; margin: 0; padding: 0; list-style: none; }
.steps li { padding-top: 24px; border-top: 1px solid var(--line); }
.steps li > span { display: block; margin-bottom: 16px; color: var(--accent); font-family: Georgia, "Times New Roman", serif; font-size: 26px; font-style: italic; line-height: 1; }
.steps h3 { font-size: 16px; font-weight: 600; }
.steps p { max-width: 27em; margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.questions { display: grid; grid-template-columns: .85fr 1.15fr; gap: 12%; padding-top: 65px; padding-bottom: 86px; border-top: 1px solid var(--line); }
.question-list { border-top: 1px solid var(--line); }
.question-list details { border-bottom: 1px solid var(--line); }
.question-list summary { position: relative; padding: 20px 28px 20px 0; font-size: 14px; font-weight: 600; line-height: 1.6; list-style: none; cursor: pointer; }
.question-list summary::-webkit-details-marker { display: none; }
.question-list summary::after { position: absolute; top: 20px; right: 2px; color: var(--accent); font-size: 17px; font-weight: 400; content: "+"; }
.question-list details[open] summary::after { content: "−"; }
.question-list summary:hover { color: var(--accent); }
.question-list details > p { padding: 0 24px 20px 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.contact-section { padding: 66px 0 72px; background: #2d4032; color: #f6f4e9; }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 12%; }
.contact-section .eyebrow { color: #c6d4b6; }
.contact-section h2 { font-size: clamp(28px, 3vw, 36px); }
.contact-section p:not(.eyebrow) { max-width: 29em; margin-top: 16px; color: #c2cbb9; font-size: 13px; line-height: 1.9; }
.contact-method { display: grid; grid-template-columns: 1fr auto; column-gap: 24px; padding: 17px 0; border-bottom: 1px solid #5d705b; transition: border-color .2s ease; }
.contact-method > span:first-child { display: block; color: #c3cdb9; font-size: 11px; }
.contact-method strong { grid-column: 1; margin-top: 3px; overflow-wrap: anywhere; font-size: clamp(16px, 1.8vw, 21px); font-weight: 500; }
.contact-method > span:last-child { grid-row: 1 / 3; grid-column: 2; align-self: center; font-size: 22px; }
.contact-method:hover { border-color: #d1dfbf; }
.contact-method:focus-visible { outline-color: #d9e5ce; }
.contact-pending { margin-top: 0 !important; color: #f0f3e9 !important; font-size: 18px !important; }
.contact-pending span { color: #c2cbb9; font-size: 12px; }
.contact-section p.contact-note { margin-top: 12px; font-size: 11px; }
.site-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; min-height: 78px; padding-block: 20px; color: var(--muted); font-size: 11px; }
.site-footer a:hover { color: var(--accent); text-decoration: underline; }

@keyframes scan-line {
    0%, 100% { transform: translateY(0); opacity: .5; }
    48%, 52% { transform: translateY(205px); opacity: 1; }
}

@media (min-width: 1600px) {
    .hero { padding-block: 84px; }
}
@media (max-width: 1000px) {
    .page-shell { width: calc(100% - 48px); }
    .site-nav { gap: 20px; }
    .header-contact { margin-left: 0; }
    .hero { gap: 32px; }
    .hero-actions { gap: 20px; }
    .scan-stage { height: 340px; }
    .scan-paper { width: 58%; left: 9%; padding: 20px; }
    .subscription-layout, .questions { grid-template-columns: .85fr 1.15fr; gap: 7%; }
    .subscription-list > div { grid-template-columns: 1fr; gap: 7px; }
}
@media (max-width: 760px) {
    .page-shell { width: calc(100% - 36px); }
    .site-header { min-height: 80px; gap: 16px; }
    .brand-name { font-size: 16px; }
    .brand-name small { font-size: 10px; }
    .brand-mark { width: 34px; height: 37px; }
    .site-nav { display: none; }
    .header-contact { gap: 15px; padding: 8px 12px; font-size: 12px; }
    .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 42px; padding-bottom: 40px; }
    .hero-copy { max-width: 570px; }
    h1 { font-size: clamp(35px, 7.3vw, 48px); }
    .hero-summary { max-width: 33em; margin-top: 18px; font-size: 14px; }
    .hero-actions { margin-top: 24px; }
    .hero-footnote { margin-top: 23px; padding-top: 17px; }
    .scan-demo { width: 100%; max-width: 570px; }
    .scan-stage { height: 330px; }
    .scan-paper { top: 54px; width: 48%; left: 14%; }
    .scan-lens { top: 28px; }
    .scan-stand { top: 48px; height: 220px; }
    .scan-base { bottom: 38px; }
    .text-result { bottom: 62px; }
    .scenarios { padding-top: 38px; padding-bottom: 46px; }
    .section-heading { margin-bottom: 26px; }
    .scene-item { grid-template-columns: 28px minmax(0, 1fr); gap: 14px; padding: 21px 0; }
    .scene-tag { grid-column: 2; justify-self: start; margin-top: -5px; }
    .scene-item h3 { font-size: 16px; }
    .subscription-section { padding-block: 44px 48px; }
    .subscription-layout, .questions, .contact-layout { grid-template-columns: 1fr; gap: 30px; }
    .subscription-intro > p:not(.eyebrow) { max-width: 35em; }
    .subscription-list > div { grid-template-columns: 117px minmax(0, 1fr); gap: 14px; }
    .onboarding { padding-block: 44px 46px; }
    .steps { gap: 24px; }
    .steps h3 { font-size: 14px; }
    .steps p { font-size: 12px; }
    .questions { padding-top: 40px; padding-bottom: 48px; gap: 0; }
    .contact-section { padding-block: 42px 46px; }
    .contact-section p:not(.eyebrow) { max-width: 35em; }
}
@media (max-width: 430px) {
    .brand { gap: 8px; }
    .header-contact { gap: 9px; }
    .hero-actions { gap: 19px; }
    .button { gap: 18px; padding-inline: 16px; }
    .hero-actions .text-link { font-size: 12px; gap: 8px; }
    .demo-topline { padding-inline: 17px; }
    .scan-paper { left: 8%; width: 55%; padding: 19px; }
    .text-result { right: 4%; width: 50%; padding: 13px; }
    .scan-demo figcaption { padding-inline: 17px; font-size: 9px; }
    .subscription-list > div { grid-template-columns: 1fr; gap: 6px; }
    .steps { grid-template-columns: 1fr; gap: 20px; }
    .steps li { display: grid; grid-template-columns: 28px minmax(0, 1fr); column-gap: 14px; padding-top: 18px; }
    .steps li > span { grid-row: 1 / 3; margin-bottom: 0; }
    .steps p { max-width: none; margin-top: 5px; }
    .site-footer { align-items: flex-start; flex-direction: column; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}