:root{--mint:#eef6e8;--green:#6bbd47;--green2:#b8e59c;--deep:#294231;--ink:#22302a;--muted:#66736a;--line:#d4ddcf;--white:#fff;--blueprint:#f8fcf6}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fcfefb;color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.8}img{display:block;max-width:100%;height:auto}a{color:inherit}.shell{width:min(1180px,calc(100% - 40px));margin:auto}.skip{position:fixed;top:-60px;left:12px;z-index:999;background:#fff;padding:10px}.skip:focus{top:12px}
.header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}.top-grid{min-height:72px;display:grid;grid-template-columns:180px 170px 1fr auto;gap:22px;align-items:center}.brand{display:inline-flex;padding:6px 8px;background:#f4f8f1;border:1px solid var(--line)}.brand img{height:32px;width:auto;max-width:155px;object-fit:contain}.status span,.status b{display:block}.status span{font-size:8px;color:#78917d;letter-spacing:.14em}.status b{font-size:14px;color:#385441}.top-grid nav{display:flex;justify-content:center;gap:22px}.top-grid nav a{text-decoration:none;color:#475e4e;font-size:13px}.top-cta{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:8px 18px;background:var(--green);color:#fff;text-decoration:none;font-weight:900;border-radius:10px}
.hero{background:linear-gradient(180deg,#f7fbf4,#eef6e8)}.hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:58px;align-items:center;padding:80px 0}.eyebrow,.install-head>span,.file-copy>span,.flow-title>span,.retry-copy>span,.related-grid>div>span,.faq-grid>div>span{font-size:10px;font-weight:900;letter-spacing:.15em;color:#5d9159}.hero h1,.install-head h2,.file-copy h2,.flow-title h2,.retry-copy h2,.related-grid h2,.faq-grid h2,.final h2{margin:0;font-size:clamp(36px,4.8vw,66px);line-height:.98;letter-spacing:-.055em}.hero h1 em{display:block;font-style:normal;color:var(--green)}.hero-left p{color:#637168;max-width:620px}.hero-cta{display:inline-flex;min-height:52px;align-items:center;justify-content:center;margin-top:24px;padding:10px 22px;background:var(--deep);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}.hero-right{margin:0;position:relative;padding:18px;background:#fff;border:1px solid var(--line);border-radius:30px}.hero-index{position:absolute;right:16px;top:12px;font-size:52px;color:#dce8d5;font-weight:900}.hero-right img{max-height:430px;width:auto;margin:auto;object-fit:contain}
.install{padding:88px 0;background:#fff}.install-grid{display:grid;grid-template-columns:.58fr 1.42fr;gap:60px}.install-head h2,.file-copy h2,.flow-title h2,.retry-copy h2,.related-grid h2,.faq-grid h2,.final h2{font-size:clamp(30px,3.1vw,44px);line-height:1.13}.blueprint{display:grid;grid-template-columns:1fr 1fr;border-top:2px solid var(--deep);border-left:1px solid var(--line)}.blueprint article{padding:24px;background:var(--blueprint);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.blueprint b{display:block;color:var(--green);font-size:12px}.blueprint h3{margin:20px 0 6px;font-size:20px}.blueprint p{color:var(--muted)}
.file{display:grid;grid-template-columns:1fr 1fr;background:var(--mint)}.file-copy,.file-visual{padding:78px 6vw}.file-copy p{color:#66736a}.file-copy ul{margin:24px 0 0;padding-left:18px;color:#4f6256}.file-copy a{display:inline-flex;margin-top:24px;padding:11px 20px;background:#fff;color:#25422d;text-decoration:none;font-weight:900;border-radius:999px}.file-visual{margin:0}.visual-top{display:flex;justify-content:space-between;padding:0 2px 12px;color:#708373;font-size:9px;letter-spacing:.13em}.visual-top b{font-size:20px;color:var(--green)}.file-visual img{max-height:430px;width:auto;margin:auto;object-fit:contain}
.flow{padding:88px 0;background:#fff}.flow-title{display:grid;grid-template-columns:200px 1fr;gap:24px;margin-bottom:28px}.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--deep);border-left:1px solid var(--line)}.flow-steps article{padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.flow-steps small{color:var(--green);font-weight:900}.flow-steps strong{display:block;margin-top:22px;font-size:20px}.flow-steps p{color:var(--muted)}
.retry{padding:86px 0;background:#f3f8ef}.retry-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}.retry figure{margin:0;padding:18px;background:#fff;border:1px solid var(--line);border-radius:24px}.retry figure img{max-height:410px;width:auto;margin:auto;object-fit:contain}.retry-copy p{color:#68756d}.retry-copy a{display:inline-flex;min-height:52px;align-items:center;justify-content:center;margin-top:24px;padding:10px 20px;background:var(--green);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.related{padding:82px 0;background:#fff}.related-grid{display:grid;grid-template-columns:.56fr 1.44fr;gap:60px}.related-grid nav{border-top:1px solid var(--line)}.related-grid nav a{min-height:84px;display:grid;grid-template-columns:100px 1fr 20px;gap:18px;align-items:center;border-bottom:1px solid var(--line);text-decoration:none}.related-grid small{color:#5a9254;font-size:9px;font-weight:900}.related-grid b{color:var(--green)}
.faq{padding:86px 0;background:#f7fbf4}.faq-grid{display:grid;grid-template-columns:.58fr 1.42fr;gap:60px}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;padding:20px 2px;font-size:18px;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";float:right;color:var(--green)}.faq-list details[open] summary:after{content:"−"}.faq-list p{margin:-3px 0 22px;padding-right:36px;color:var(--muted)}
.final{padding:56px 0;background:var(--deep);color:#fff}.final-grid{display:grid;grid-template-columns:110px 1fr auto;gap:28px;align-items:center}.final-grid>span{font-size:10px;font-weight:900;letter-spacing:.14em;color:#a6d89a}.final p{margin:6px 0 0;color:#d1ddd3}.final a{min-width:200px;min-height:52px;display:inline-flex;align-items:center;justify-content:center;background:var(--green);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.footer{padding:50px 0 86px;background:#121913;color:#d8dfd7}.foot-grid{display:grid;grid-template-columns:1fr auto;gap:36px}.foot-grid img{height:31px;width:auto;max-width:155px;object-fit:contain;padding:6px 8px;background:#0b100c}.foot-grid p{color:#97a098;font-size:13px}.foot-grid nav{display:flex;gap:18px;flex-wrap:wrap}.foot-grid nav a{color:#d8dfd7;text-decoration:none;font-size:14px}.mobile-bar{display:none}
@media(max-width:900px){.top-grid{grid-template-columns:1fr auto}.status,.top-grid nav{display:none}.hero-grid,.file,.retry-grid,.related-grid,.faq-grid{grid-template-columns:1fr}.install-grid,.flow-title{grid-template-columns:1fr}.blueprint,.flow-steps{grid-template-columns:1fr 1fr}.final-grid{grid-template-columns:1fr}.final a{width:100%}}
@media(max-width:600px){body{font-size:15px;padding-bottom:60px}.shell{width:min(100% - 28px,1180px)}.top-grid{min-height:64px}.brand img{height:28px}.top-cta{font-size:12px;padding:8px 12px}.hero-grid{padding:56px 0}.hero h1{font-size:clamp(42px,14vw,60px)}.hero-right img,.file-visual img,.retry figure img{max-height:300px}.install,.flow,.related,.faq{padding:62px 0}.file-copy,.file-visual{padding:58px 22px}.flow-steps,.blueprint{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr}.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:100;height:60px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:8px 14px;background:rgba(18,25,19,.98);color:#fff;border-top:1px solid rgba(255,255,255,.1)}.mobile-bar a{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:8px 15px;background:var(--green);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}}
.android-actions-extra{padding:28px 0 0;background:#fff}
.extra-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.extra-grid a{min-height:96px;display:grid;grid-template-columns:60px 1fr auto;gap:14px;align-items:center;padding:18px 20px;background:#f3f8ef;border:1px solid var(--line);text-decoration:none;border-radius:18px}
.extra-grid small{color:var(--green);font-weight:900}
.extra-grid strong{font-size:18px}
.extra-grid span{color:#34513d;font-weight:900}
@media(max-width:900px){.extra-grid{grid-template-columns:1fr}}