:root{--ink:#24372f;--muted:#65756c;--paper:#fcfaf5;--warm:#f3eee3;--green:#315f48;--green-dark:#204432;--line:#dfdfd3}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,"Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1160px,90vw);margin:auto}
.site-nav{position:sticky;top:0;z-index:10;background:rgba(252,250,245,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:750;white-space:nowrap}
.brand-logo{width:38px;height:38px;object-fit:contain;border-radius:10px}
.brand small{display:block;color:var(--muted);font-size:11px;font-weight:500;line-height:1.2}
.nav-links{display:flex;align-items:center;gap:27px;font-size:14px;color:#52645a}
.nav-links a:hover,.text-link:hover{color:var(--green)}
.button{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:49px;padding:11px 22px;border:1px solid var(--green);border-radius:999px;background:var(--green);color:white;font-weight:700;line-height:1.3;text-align:center;transition:background .15s,transform .15s}
.button:hover{background:var(--green-dark);transform:translateY(-1px)}
.button.light{background:transparent;color:var(--green)}
.button.light:hover{background:#edf4ed}
.button[aria-disabled=true]{opacity:.54;cursor:not-allowed;transform:none}
.nav-button{min-height:40px;padding:8px 17px;font-size:13px}
.hero{padding:64px 0 78px;background:linear-gradient(145deg,#f5f1e7,#f9f7ef 58%,#e9efe7)}
.hero-grid{display:grid;grid-template-columns:.82fr 1.18fr;align-items:center;gap:48px}
.eyebrow{color:var(--green);font-size:13px;font-weight:750;letter-spacing:.11em}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(40px,5vw,70px);letter-spacing:-.055em;line-height:1.18;margin:18px 0 22px}
h2{font-size:clamp(29px,3.2vw,45px);letter-spacing:-.04em;line-height:1.3;margin:12px 0 20px}
h3{font-size:22px;line-height:1.4;margin-bottom:11px}
.lead{font-size:clamp(17px,1.6vw,21px);color:#52665b;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-download-qr{display:flex;align-items:center;gap:14px;width:max-content;max-width:100%;margin-top:18px;padding:9px 15px 9px 9px;border:1px solid #d9e2d7;border-radius:15px;background:#fff}
.hero-download-qr img,.download-qr img{display:block;flex:none;width:112px;height:112px;padding:5px;border-radius:9px;background:#fff}
.hero-download-qr strong,.hero-download-qr small,.download-qr strong,.download-qr small{display:block}
.hero-download-qr small,.download-qr small{color:var(--muted);font-size:12px}
.hero-note{font-size:13px;color:var(--muted);margin-top:17px}
.hero-image{width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;border-radius:28px;box-shadow:0 24px 50px rgba(38,58,42,.14)}
.section{padding:88px 0}
.section.tinted{background:#eef2e9}
.section-head{max-width:720px;margin-bottom:34px}
.section-head p,.muted{color:var(--muted)}
.intro-grid,.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.intro-grid img,.scene-grid img{width:100%;height:400px;object-fit:cover;border-radius:24px}
.scene-grid img.family-scene-image{height:auto;aspect-ratio:16/9;object-fit:contain}
.story{background:#fbf7ee}
.story-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(38px,6vw,76px);align-items:center}
.story-visual{margin:0}
.story-visual img{width:100%;height:clamp(390px,47vw,560px);object-fit:cover;border-radius:28px;box-shadow:0 22px 48px rgba(50,63,52,.12)}
.story-visual p{margin:14px 4px 0;color:#7c877f;font-size:13px;letter-spacing:.03em}
.story-copy{max-width:650px}
.story-copy h2{max-width:560px}
.story-lead{font-size:clamp(19px,2vw,24px);line-height:1.75;color:#3d5146}
.story-copy>p:not(.story-lead):not(.story-promise){color:#5d6d64;font-size:17px}
.story-promise{margin:30px 0 27px;padding-left:22px;border-left:3px solid #75947f;color:#294b39;font-size:18px;font-weight:720;line-height:1.75}
.story-points{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding-top:2px}
.story-points span{padding:15px 14px;border-top:1px solid #cad5ca;color:#65756c;font-size:13px;line-height:1.55}
.story-points strong{display:block;margin-bottom:3px;color:#315f48;font-size:14px}
.how-it-works{background:#f7f8f2}
.how-heading{display:grid;grid-template-columns:1fr .75fr;gap:54px;align-items:end;margin-bottom:42px}
.how-heading h2{margin-bottom:0}
.how-heading>p{max-width:480px;margin:0 0 6px;color:#56695d;font-size:17px;line-height:1.85}
.how-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;list-style:none;margin:0;padding:0}
.how-steps li{position:relative;min-height:242px;padding:28px 24px 30px;border:1px solid #d9e2d7;border-radius:22px;background:#fff}
.how-steps li:not(:last-child):after{content:"";position:absolute;z-index:1;top:51px;right:-16px;width:16px;height:1px;background:#9cb5a1}
.how-number{display:inline-flex;width:48px;height:48px;align-items:center;justify-content:center;margin-bottom:24px;border-radius:50%;background:#e7f0e8;color:#315f48;font-size:14px;font-weight:800;letter-spacing:.03em}
.how-steps h3{font-size:18px;line-height:1.45;margin-bottom:10px}
.how-steps p{margin:0;color:#65756c;font-size:14px;line-height:1.75}
.how-closing{margin:28px 0 0;color:#315f48;font-size:15px;font-weight:650}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.benefit,.feature,.download-card,.policy-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}
.benefit .number{color:#8caa94;font-size:14px;font-weight:800}
.benefit p,.feature p{color:var(--muted);margin-bottom:0}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:#f9faf6}
.feature-icon{font-size:27px;margin-bottom:16px}
.scene-grid{gap:50px}
.scene-grid:nth-child(even) img{order:2}
.scene-grid+.scene-grid{margin-top:46px}
.download-banner{padding:58px;border-radius:26px;background:#2d5743;color:white;display:flex;justify-content:space-between;align-items:center;gap:30px}
.download-banner p{color:#d8e5d9;margin:0}
.download-banner .button{background:white;color:var(--green);border-color:white;white-space:nowrap}
.page-hero{padding:70px 0 44px;background:#eef2e9}
.page-hero h1{font-size:clamp(36px,4vw,55px)}
.breadcrumb{color:var(--muted);font-size:13px}
.breadcrumb a{text-decoration:underline;text-underline-offset:3px}
.page-content{padding:56px 0 90px}
.download-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;align-items:start}
.download-card h2{font-size:27px}
.release-details{display:grid;grid-template-columns:140px 1fr;gap:11px 16px;margin:26px 0;padding-top:23px;border-top:1px solid var(--line);font-size:14px}
.release-details dt{color:var(--muted)}
.release-details dd{margin:0;overflow-wrap:anywhere;font-weight:650}
.download-status{padding:15px 17px;border-radius:12px;background:#f7f2e5;color:#755d2f;font-size:14px;margin-bottom:20px}
.download-choice{display:flex;align-items:center;justify-content:space-between;gap:20px}
.download-choice .hero-note{max-width:290px}
.download-qr{display:flex;flex:none;flex-direction:column;align-items:center;padding:12px;border:1px solid var(--line);border-radius:14px;background:#f9faf6;text-align:center}
.download-qr img{width:142px;height:142px;margin-bottom:5px}
.help-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px;align-items:start}
.help-layout .help-card{max-width:none}
.help-steps{counter-reset:help;list-style:none;margin:0 0 28px;padding:0}
.help-steps li{position:relative;padding:0 0 24px 52px;border-bottom:1px solid var(--line);margin-bottom:24px}
.help-steps li:last-child{margin-bottom:0}
.help-steps li:before{counter-increment:help;content:counter(help);position:absolute;top:1px;left:0;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#e7f0e8;color:var(--green);font-weight:800}
.help-steps h2{margin:0 0 9px;font-size:21px}
.help-steps p{margin:0}
.help-note{margin-bottom:25px;padding:18px 20px;border-radius:14px;background:#f4f7f0}
.help-note p{margin:7px 0 0}
.policy-card{max-width:850px}
.policy-card h2{font-size:24px;margin-top:32px}
.policy-card h2:first-child{margin-top:0}
.policy-card p,.policy-card li{color:#4f5f54}
.policy-card a{text-decoration:underline;text-underline-offset:3px;color:var(--green)}
.footer{background:#213d30;color:#e7efe7;padding:42px 0}
.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:start}
.footer small{color:#b5c6b8}
.footer-links{display:flex;flex-wrap:wrap;gap:17px;font-size:13px}
@media(max-width:850px){.nav-links{gap:12px}.hero-grid{gap:25px}.section{padding:66px 0}.story-grid{gap:34px}.story-points{grid-template-columns:1fr}.how-heading{gap:30px}.how-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.how-steps li{min-height:210px}.how-steps li:nth-child(2):after{display:none}.download-banner{padding:38px}.help-layout{grid-template-columns:1fr}}
@media(max-width:680px){.wrap{width:min(100% - 36px,560px)}.nav-inner{min-height:65px}.nav-links,.nav-inner>.nav-button{display:none}.hero{padding:38px 0 55px}.hero-grid,.intro-grid,.story-grid,.scene-grid,.download-layout,.how-heading{grid-template-columns:1fr}.intro-grid img,.scene-grid img,.story-visual img{height:290px}.story-copy{max-width:none}.story-lead{font-size:18px}.story-promise{margin:25px 0 22px;font-size:17px}.how-heading{gap:18px;margin-bottom:26px}.how-heading>p{font-size:15px}.how-steps{grid-template-columns:1fr}.how-steps li{min-height:0;padding:22px 23px}.how-steps li:after{display:none}.how-number{width:42px;height:42px;margin-bottom:14px}.how-steps h3{font-size:17px}.how-closing{font-size:14px}.scene-grid:nth-child(even) img{order:0}.benefits,.features{grid-template-columns:1fr}.section{padding:56px 0}.download-banner,.footer-inner{display:block}.download-banner .button{margin-top:26px}.footer-links{margin-top:20px}.page-hero{padding:49px 0 29px}.page-content{padding:34px 0 65px}.release-details{grid-template-columns:105px 1fr}.benefit,.feature,.download-card,.policy-card{padding:23px}.download-choice{align-items:stretch;flex-direction:column}.download-qr{align-self:flex-start}.help-steps li{padding-left:44px}}