/* 拾光码 · marketing */
body.page-home { background: var(--paper); overflow-x: hidden; }
.page-home::before {
    content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .4;
    background-image: radial-gradient(rgba(23, 33, 28, .09) .6px, transparent .6px);
    background-size: 7px 7px;
}
.site-header {
    position: sticky; top: 0; z-index: 80;
    background: rgba(244, 240, 230, .82); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line-light);
}
.site-header-inner {
    width: min(1240px, calc(100% - 64px)); height: 76px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between; gap: 30px;
}
.site-nav { display: flex; align-items: center; gap: 32px; margin-left: auto; }
.site-nav a { font-size: 13px; font-weight: 500; color: var(--muted); transition: color .2s; }
.site-nav a:hover { color: var(--ink); }
.site-actions { display: flex; align-items: center; gap: 20px; margin-left: 16px; }
.site-actions .text-link { font-size: 13px; }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); padding: 8px; }
.mobile-menu { display: none; }

.hero { position: relative; overflow: hidden; }
.hero::before {
    content: ""; position: absolute; width: 900px; height: 900px; left: -380px; top: -300px;
    background: radial-gradient(circle, rgba(203, 219, 193, .68), transparent 68%); pointer-events: none;
}
.hero::after {
    content: ""; position: absolute; width: 760px; height: 760px; right: -300px; top: 100px;
    background: radial-gradient(circle, rgba(233, 209, 177, .44), transparent 68%); pointer-events: none;
}
.hero-inner {
    position: relative; z-index: 2; width: min(1240px, calc(100% - 64px)); margin: 0 auto;
    min-height: 690px; padding: 70px 0 74px;
    display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 40px;
}
.hero-copy { padding-top: 10px; }
.hero h1 {
    font-family: var(--serif); font-size: clamp(54px, 6.2vw, 84px); font-weight: 600;
    line-height: 1.12; letter-spacing: -.055em; margin: 0 0 26px;
}
.hero h1 .accent-word { position: relative; color: var(--green); white-space: nowrap; }
.hero h1 .accent-word::after {
    content: ""; position: absolute; left: -2px; right: -4px; bottom: 5px; height: 12px;
    background: rgba(217, 112, 75, .26); border-radius: 50%; transform: rotate(-1.2deg); z-index: -1;
}
.hero-lead { max-width: 470px; font-size: 16px; line-height: 1.9; color: #59615a; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 34px 0 26px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 12px; }
.hero-proof li { display: flex; align-items: center; gap: 5px; }
.hero-proof .icon { color: var(--green); }

.hero-art { position: relative; min-height: 570px; }
.art-orbit { position: absolute; border: 1px solid rgba(20, 80, 59, .13); border-radius: 50%; }
.art-orbit-a { width: 530px; height: 530px; left: 50%; top: 48%; transform: translate(-48%, -50%); }
.art-orbit-b { width: 400px; height: 400px; left: 50%; top: 46%; transform: translate(-46%, -50%); border-style: dashed; opacity: .7; }
.polaroid {
    position: absolute; z-index: 3; width: min(370px, 73%); left: 8%; top: 4%;
    padding: 14px 14px 16px; background: #fbf8ee; border-radius: 3px;
    box-shadow: 0 28px 60px rgba(38, 43, 34, .18), 0 2px 0 rgba(255, 255, 255, .8) inset;
    transform: rotate(-4.5deg); transition: transform .6s var(--ease);
}
.polaroid:hover { transform: rotate(-2.5deg) translateY(-5px); }
.polaroid-img { aspect-ratio: 4 / 3; overflow: hidden; background: #d9d2c3; position: relative; }
.polaroid-img img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.93) contrast(.98); }
.polaroid-img::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 50px rgba(64, 42, 20, .12); pointer-events: none; }
.polaroid figcaption { display: flex; align-items: center; justify-content: space-between; padding: 13px 4px 0; }
.polaroid .hand { font-family: var(--hand); font-size: 18px; color: #454239; }
.polaroid .date { font-size: 10px; letter-spacing: .1em; color: #9b968a; }
.tape { position: absolute; width: 78px; height: 24px; background: rgba(214, 190, 141, .55); backdrop-filter: blur(2px); box-shadow: 0 1px 3px rgba(40, 30, 10, .08); }
.tape-a { top: -10px; left: 50%; transform: translateX(-50%) rotate(2deg); }
.tape-b { bottom: -8px; right: -18px; width: 64px; transform: rotate(-38deg); opacity: .8; }
.art-placeholder { height: 100%; display: grid; place-items: center; background: linear-gradient(145deg, #c7d2ba, #e3d3b8); color: #5b6655; font-size: 13px; }

.floating-qr {
    position: absolute; z-index: 5; width: 302px; right: 0; bottom: 28px;
    background: rgba(255, 253, 247, .96); border: 1px solid rgba(255, 255, 255, .7);
    border-radius: 18px; box-shadow: 0 26px 70px rgba(23, 33, 28, .22);
    backdrop-filter: blur(12px); transform: rotate(2deg); overflow: hidden;
}
.floating-qr-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 15px; border-bottom: 1px solid var(--line-light); font-size: 10px; letter-spacing: .06em; color: var(--muted); }
.live-dot { display: inline-flex; align-items: center; gap: 5px; color: var(--ok); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.live-dot::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(47, 118, 88, .12); }
.floating-qr-body { display: flex; align-items: center; gap: 14px; padding: 15px; }
.qr-box { flex: 0 0 112px; width: 112px; height: 112px; padding: 6px; background: #fff; border-radius: 6px; display: grid; place-items: center; }
.qr-box svg, .qr-box img { width: 100%; height: 100%; display: block; }
.floating-qr-meta { min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.floating-qr-meta strong { font-family: var(--serif); font-size: 17px; line-height: 1.35; color: var(--ink); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.floating-qr-meta > span { font-size: 10px; color: var(--muted); letter-spacing: .02em; }
.floating-qr-meta .micro { margin-top: 6px; font-size: 8px; letter-spacing: .18em; color: #aaa79b; }
.floating-qr-foot { display: flex; justify-content: space-between; gap: 8px; padding: 9px 15px; background: rgba(244, 240, 230, .7); border-top: 1px solid var(--line-light); color: #8b8d84; font-size: 8.5px; letter-spacing: .02em; }
.floating-qr-foot span { display: inline-flex; align-items: center; gap: 4px; }
.art-stamp {
    position: absolute; z-index: 4; right: 40px; top: 6%; width: 82px; height: 82px; border-radius: 50%;
    border: 1px solid rgba(20, 80, 59, .28); color: var(--green); display: flex; flex-direction: column;
    align-items: center; justify-content: center; transform: rotate(11deg); background: rgba(244, 240, 230, .55);
}
.art-stamp span { font-family: var(--serif); font-size: 34px; line-height: .95; }
.art-stamp small { font-size: 8px; letter-spacing: .22em; margin-top: 2px; }

.hero-ticker { border-block: 1px solid var(--line-light); overflow: hidden; padding: 15px 0; background: rgba(255, 253, 247, .32); }
.ticker-track { display: flex; align-items: center; gap: 30px; width: max-content; animation: ticker 38s linear infinite; }
.ticker-track span { font-family: var(--serif); font-size: 12px; letter-spacing: .18em; color: #8a8d83; white-space: nowrap; }
.ticker-track i { width: 5px; height: 5px; background: var(--coral); border-radius: 50%; opacity: .6; }
@keyframes ticker { to { transform: translateX(-50%); } }

.section { padding: 112px 0; }
.section-head { width: min(1240px, calc(100% - 64px)); margin: 0 auto 54px; display: grid; grid-template-columns: 1.2fr .8fr; column-gap: 80px; align-items: end; }
.section-head .eyebrow { grid-column: 1 / -1; margin-bottom: 18px; }
.section-head h2 { font-family: var(--serif); font-size: clamp(38px, 4vw, 54px); font-weight: 600; line-height: 1.26; letter-spacing: -.045em; }
.section-head > p:last-child { color: var(--muted); font-size: 14.5px; line-height: 1.95; padding-bottom: 8px; }
.feature-grid { width: min(1240px, calc(100% - 64px)); margin: 0 auto; display: grid; grid-template-columns: 1.18fr .91fr .91fr; gap: 18px; }
.feature-card {
    position: relative; overflow: hidden; min-height: 410px; padding: 34px 32px 30px;
    border: 1px solid var(--line); border-radius: 22px; background: rgba(255, 253, 247, .58);
    display: flex; flex-direction: column;
}
.feature-card-hero { background: var(--green-deep); color: #f2eee2; border-color: transparent; }
.feature-card-hero::after { content: ""; position: absolute; right: -120px; bottom: -140px; width: 360px; height: 360px; border: 1px solid rgba(246, 242, 231, .14); border-radius: 50%; }
.feature-num { position: absolute; top: 26px; right: 28px; font-size: 10px; letter-spacing: .16em; color: #a2a59b; }
.feature-card-hero .feature-num { color: rgba(246, 242, 231, .4); }
.feature-icon { width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center; color: var(--green); background: var(--green-soft); margin-bottom: 28px; }
.feature-card-hero .feature-icon { color: #e9e4d5; background: rgba(246, 242, 231, .1); border: 1px solid rgba(246, 242, 231, .16); }
.feature-card h3 { font-family: var(--serif); font-size: 26px; font-weight: 600; letter-spacing: -.03em; margin-bottom: 12px; }
.feature-card p { font-size: 13.5px; line-height: 1.85; color: var(--muted); }
.feature-card-hero p { color: rgba(242, 238, 226, .66); }
.feature-line { margin-top: auto; padding-top: 30px; display: flex; align-items: center; gap: 14px; font-family: var(--serif); font-size: 13px; letter-spacing: .08em; color: rgba(246, 242, 231, .6); }
.feature-line i { flex: 1; height: 1px; background: linear-gradient(90deg, rgba(246, 242, 231, .2), rgba(217, 112, 75, .8), rgba(246, 242, 231, .2)); }
.compression-bar { margin-top: auto; padding-top: 30px; font-size: 10px; color: var(--muted); display: flex; flex-direction: column; gap: 9px; }
.compression-bar > div { height: 4px; border-radius: 4px; background: #e2ddd0; overflow: hidden; }
.compression-bar i { display: block; height: 100%; width: 18%; background: var(--coral); border-radius: 4px; }
.compression-bar strong { color: var(--green); font-size: 12px; }
.mini-users { margin-top: auto; padding-top: 28px; display: flex; }
.mini-users span { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; margin-left: -7px; background: #d9e2d2; color: #31513e; font-size: 11px; border: 2px solid var(--white); }
.mini-users span:first-child { margin-left: 0; background: #e4cdb7; color: #6c4a2e; }
.mini-users span:nth-child(2) { background: #cfd8e1; color: #39536b; }
.mini-users span:nth-child(3) { background: #e2d9c5; color: #665b40; }
.mini-users span:last-child { background: var(--green); color: #fff; }

.how { background: var(--green-deep); color: #f3efdf; position: relative; overflow: hidden; }
.how::before { content: ""; position: absolute; width: 700px; height: 700px; right: -220px; top: -290px; border: 1px solid rgba(243, 239, 223, .08); border-radius: 50%; }
.how::after { content: ""; position: absolute; width: 480px; height: 480px; right: -80px; top: -200px; border: 1px solid rgba(243, 239, 223, .06); border-radius: 50%; }
.how-inner { position: relative; z-index: 2; width: min(1240px, calc(100% - 64px)); margin: 0 auto; display: grid; grid-template-columns: .78fr 1.22fr; gap: 100px; }
.how-copy { position: sticky; top: 120px; align-self: start; }
.how-copy h2 { font-family: var(--serif); font-size: clamp(40px, 4.4vw, 58px); font-weight: 600; line-height: 1.2; letter-spacing: -.04em; margin-bottom: 22px; }
.how-copy > p:not(.eyebrow) { color: rgba(243, 239, 223, .62); font-size: 14px; line-height: 1.95; max-width: 340px; }
.how-copy .btn { margin-top: 28px; }
.steps li { display: grid; grid-template-columns: 46px 1fr 150px; gap: 24px; align-items: center; padding: 30px 0; border-top: 1px solid rgba(243, 239, 223, .13); }
.steps li:last-child { border-bottom: 1px solid rgba(243, 239, 223, .13); }
.step-no { font-family: var(--serif); font-size: 13px; color: rgba(243, 239, 223, .36); }
.steps h3 { font-family: var(--serif); font-size: 24px; font-weight: 500; margin-bottom: 6px; }
.steps p { color: rgba(243, 239, 223, .56); font-size: 12.5px; line-height: 1.8; max-width: 390px; }
.step-visual { width: 150px; height: 92px; border-radius: 12px; border: 1px solid rgba(243, 239, 223, .12); background: rgba(243, 239, 223, .04); display: flex; align-items: center; justify-content: center; gap: 6px; color: rgba(243, 239, 223, .62); font-size: 10px; }
.upload-visual { flex-direction: column; border-style: dashed; }
.note-visual { display: block; padding: 20px; }
.note-visual span { font-family: var(--hand); font-size: 14px; color: rgba(243, 239, 223, .8); display: block; margin-bottom: 11px; }
.note-visual i { display: block; height: 1px; background: rgba(243, 239, 223, .2); margin-bottom: 8px; }
.note-visual i:last-child { width: 60%; }
.qr-visual span { width: 46px; height: 46px; background-image: repeating-linear-gradient(90deg, rgba(243,239,223,.7) 0 5px, transparent 5px 9px), repeating-linear-gradient(0deg, rgba(243,239,223,.7) 0 5px, transparent 5px 9px); background-size: 9px 9px; opacity: .65; }

.showcase { background: var(--paper-2); }
.showcase-inner { width: min(1240px, calc(100% - 64px)); margin: 0 auto; display: grid; grid-template-columns: 1.02fr .98fr; gap: 96px; align-items: center; }
.showcase-photo { position: relative; padding: 16px; background: #faf6ea; box-shadow: 0 30px 70px rgba(30, 40, 32, .16); transform: rotate(-1.8deg); }
.showcase-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: saturate(.9); }
.showcase-caption { display: flex; justify-content: space-between; align-items: center; padding: 12px 4px 0; }
.showcase-caption span { font-family: var(--hand); font-size: 19px; color: #4f4a3e; }
.showcase-caption small { color: #989183; font-size: 10px; letter-spacing: .08em; }
.showcase-copy h2 { font-family: var(--serif); font-size: clamp(38px, 4.2vw, 54px); line-height: 1.25; font-weight: 600; letter-spacing: -.045em; margin-bottom: 24px; }
.showcase-copy > p:not(.eyebrow) { color: var(--muted); font-size: 14.5px; line-height: 1.95; max-width: 460px; }
.showcase-copy blockquote { margin: 30px 0; padding-left: 20px; border-left: 2px solid var(--coral); font-family: var(--serif); font-size: 17px; line-height: 1.8; color: var(--ink-soft); }
.showcase-copy cite { display: block; font-family: var(--sans); font-size: 11px; color: var(--muted); font-style: normal; margin-top: 8px; }
.showcase-stats { display: flex; gap: 38px; padding-top: 24px; border-top: 1px solid var(--line); }
.showcase-stats div { display: flex; flex-direction: column; gap: 2px; }
.showcase-stats strong { font-family: var(--serif); font-size: 30px; font-weight: 600; color: var(--green); line-height: 1.2; }
.showcase-stats span { font-size: 10px; color: var(--muted); }

.faq { background: var(--paper); }
.faq-inner { width: min(1240px, calc(100% - 64px)); margin: 0 auto; display: grid; grid-template-columns: .7fr 1.3fr; gap: 100px; }
.faq-head h2 { font-family: var(--serif); font-size: clamp(38px, 4vw, 50px); font-weight: 600; letter-spacing: -.04em; line-height: 1.2; margin-bottom: 18px; }
.faq-head > p:last-child { color: var(--muted); font-size: 13px; max-width: 280px; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; padding: 24px 0; font-family: var(--serif); font-size: 19px; font-weight: 500; letter-spacing: -.01em; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { font-family: var(--sans); font-weight: 300; font-size: 25px; color: var(--muted); transition: transform .25s; }
.faq-list details[open] summary span { transform: rotate(45deg); color: var(--coral); }
.faq-list details p { padding: 0 40px 25px 0; color: var(--muted); font-size: 13.5px; line-height: 1.95; }

.closing { background: var(--coral); color: #fff8ee; position: relative; overflow: hidden; }
.closing::after { content: "6"; position: absolute; right: 4%; bottom: -32%; font-family: var(--serif); font-size: 440px; line-height: 1; color: rgba(255, 248, 238, .08); pointer-events: none; }
.closing-inner { position: relative; z-index: 2; width: min(1240px, calc(100% - 64px)); margin: 0 auto; padding: 86px 0; display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; }
.closing h2 { font-family: var(--serif); font-size: clamp(44px, 5vw, 64px); font-weight: 600; line-height: 1.18; letter-spacing: -.05em; }
.closing-right p { font-size: 14px; line-height: 1.8; color: rgba(255, 248, 238, .78); max-width: 330px; margin-bottom: 24px; }
.closing .btn-light { background: #fff8ed; color: #8e3f2a; }
.closing-note { display: block; margin-top: 16px; font-size: 11px; color: rgba(255, 248, 238, .66); }
.closing-note a { text-decoration: underline; color: #fff8ee; }

.site-footer { background: #10271d; color: rgba(243, 239, 223, .66); }
.site-footer-inner { width: min(1240px, calc(100% - 64px)); margin: 0 auto; padding: 58px 0 32px; display: grid; grid-template-columns: 1.4fr .6fr 1fr; gap: 40px; align-items: start; }
.site-footer .brand { color: #e9e4d3; }
.site-footer .brand-word { color: #f5f0e2; }
.footer-brand p { max-width: 300px; font-size: 12px; line-height: 1.8; margin-top: 15px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; font-size: 12px; }
.footer-links a:hover { color: #f5f0e2; }
.footer-meta { display: flex; flex-direction: column; gap: 8px; justify-self: end; text-align: right; font-size: 10px; letter-spacing: .06em; }

@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr .9fr; gap: 10px; }
    .hero h1 { font-size: 58px; }
    .polaroid { width: 300px; }
    .floating-qr { width: 270px; }
    .feature-grid { grid-template-columns: 1fr 1fr; }
    .feature-card-hero { grid-column: 1 / -1; min-height: 330px; }
    .how-inner, .faq-inner { gap: 60px; }
    .steps li { grid-template-columns: 38px 1fr; }
    .step-visual { display: none; }
}
@media (max-width: 820px) {
    .site-header-inner, .hero-inner, .section-head, .feature-grid, .how-inner, .showcase-inner, .faq-inner, .closing-inner, .site-footer-inner { width: min(100% - 40px, 680px); }
    .site-nav, .site-actions { display: none; }
    .menu-toggle { display: inline-flex; }
    .mobile-menu { display: none; padding: 8px 20px 22px; flex-direction: column; gap: 4px; background: var(--paper); border-bottom: 1px solid var(--line); }
    .mobile-menu.is-open { display: flex; }
    .mobile-menu a { padding: 11px 2px; font-size: 14px; color: var(--muted); border-bottom: 1px solid var(--line-light); }
    .mobile-menu .btn { margin-top: 10px; border-bottom: 0; }
    .site-header-inner { height: 66px; }
    .hero-inner { grid-template-columns: 1fr; padding: 50px 0 42px; min-height: 0; }
    .hero h1 { font-size: clamp(44px, 11vw, 66px); }
    .hero-art { min-height: 530px; margin-top: 34px; }
    .polaroid { width: min(340px, 72%); left: 4%; }
    .floating-qr { width: min(280px, 66%); right: 0; bottom: 20px; }
    .art-stamp { right: 6%; width: 68px; height: 68px; }
    .art-stamp span { font-size: 28px; }
    .section { padding: 78px 0; }
    .section-head { grid-template-columns: 1fr; gap: 18px; margin-bottom: 34px; }
    .section-head h2 { font-size: 38px; }
    .feature-grid { grid-template-columns: 1fr; }
    .feature-card { min-height: 0; padding: 28px; }
    .feature-card-hero { min-height: 310px; }
    .feature-icon { margin-bottom: 22px; }
    .feature-line, .compression-bar, .mini-users { padding-top: 26px; margin-top: 22px; }
    .how-inner { grid-template-columns: 1fr; gap: 48px; }
    .how-copy { position: static; }
    .how-copy > p:not(.eyebrow) { max-width: 100%; }
    .showcase-inner { grid-template-columns: 1fr; gap: 46px; }
    .showcase-photo { transform: rotate(-1deg); }
    .showcase-copy h2 { font-size: 40px; }
    .faq-inner { grid-template-columns: 1fr; gap: 34px; }
    .faq-head > p:last-child { max-width: 100%; }
    .faq-list summary { font-size: 17px; padding: 20px 0; }
    .faq-list details p { padding-right: 10px; }
    .closing-inner { grid-template-columns: 1fr; gap: 34px; padding: 64px 0; }
    .closing::after { font-size: 300px; }
    .site-footer-inner { grid-template-columns: 1fr 1fr; padding-top: 42px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-meta { justify-self: start; text-align: left; }
}
@media (max-width: 520px) {
    .hero-art { min-height: 450px; }
    .polaroid { width: 72%; padding: 10px 10px 12px; }
    .polaroid .hand { font-size: 15px; }
    .floating-qr { width: 68%; bottom: 10px; }
    .floating-qr-body { padding: 10px; gap: 10px; }
    .qr-box { flex-basis: 84px; width: 84px; height: 84px; }
    .floating-qr-meta strong { font-size: 14px; }
    .floating-qr-meta > span { font-size: 9px; }
    .floating-qr-foot { display: none; }
    .art-orbit-a { width: 360px; height: 360px; }
    .art-orbit-b { width: 280px; height: 280px; }
    .hero-proof { gap: 12px; font-size: 11px; }
    .hero-cta { gap: 8px; }
    .hero-cta .btn { flex: 1; min-width: 150px; }
    .showcase-stats { gap: 22px; }
    .showcase-stats strong { font-size: 25px; }
    .site-footer-inner { grid-template-columns: 1fr; gap: 26px; }
    .footer-links { flex-direction: row; gap: 18px; }
}