:root{color-scheme:light;--black:#0b0b0b;--ink:#1d1d1d;--muted:#6f6f6f;--line:#dedede;--soft:#f5f5f3;--white:#fff;--danger:#a01818;--success:#176c3b}*{box-sizing:border-box}body{margin:0;background:#efefed;color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}.install-header{height:66px;padding:0 max(24px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;background:var(--black);color:#aaa;border-bottom:1px solid #292929}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}.brand span{display:grid;place-items:center;width:34px;height:34px;background:#fff;color:#111;font-size:19px;font-weight:800}.brand strong{font-size:17px}.install-shell{width:min(1120px,calc(100% - 32px));margin:42px auto 70px}.intro{margin-bottom:28px}.eyebrow{font-size:11px;letter-spacing:.2em;font-weight:800;color:#777}.intro h1,.success-card h1{margin:5px 0 4px;font-size:34px;line-height:1.25;letter-spacing:-.04em}.intro p{margin:0;color:var(--muted)}.steps{display:grid;grid-template-columns:repeat(4,1fr);padding:0;margin:26px 0 0;list-style:none;border:1px solid var(--line);background:#fff}.steps li{padding:13px 16px;border-right:1px solid var(--line);color:#888;font-size:12px}.steps li:last-child{border:0}.steps li.active{background:#121212;color:#fff}.alert{display:flex;gap:16px;align-items:flex-start;margin:0 0 18px;padding:15px 18px;background:#fff;border:1px solid #c75b5b;border-left:4px solid var(--danger)}.alert strong{white-space:nowrap}.alert span{color:var(--danger)}.install-card{margin-bottom:18px;background:var(--white);border:1px solid var(--line)}.install-card>header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 22px;border-bottom:1px solid var(--line)}.install-card header small{display:block;color:#888;font-size:10px;letter-spacing:.14em}.install-card h2{margin:1px 0 0;font-size:18px}.status-pill{padding:4px 9px;border:1px solid;font-size:11px}.status-pill.ok{color:var(--success);border-color:#7ab590;background:#eff8f2}.status-pill.bad{color:var(--danger);border-color:#d78d8d;background:#fff4f4}.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}.check-row{min-width:0;padding:14px 18px;display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:10px;align-items:center;background:#fff}.check-icon{display:grid;place-items:center;width:24px;height:24px;border:1px solid;font-weight:800}.passed .check-icon{color:var(--success);border-color:#72a987}.failed .check-icon{color:var(--danger);border-color:#d08383}.check-row strong,.check-row small{display:block}.check-row small{overflow:hidden;color:#888;font-size:11px;text-overflow:ellipsis;white-space:nowrap}.check-row em{color:#999;font-size:10px;font-style:normal}.database-types{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:20px 22px 0}.database-types label{cursor:pointer}.database-types input{position:absolute;opacity:0}.database-types span{display:block;padding:15px 17px;border:1px solid var(--line)}.database-types input:checked+span{border:2px solid #111;padding:14px 16px;background:#fafafa}.database-types strong,.database-types small{display:block}.database-types small,.form-grid small,.muted{color:#888}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px 20px;padding:20px 22px 24px}.form-grid label>span{display:block;margin-bottom:6px;font-size:12px;font-weight:700}.form-grid input:not([type=checkbox]){width:100%;height:42px;padding:0 12px;border:1px solid #cfcfcf;background:#fff;color:#111;outline:0}.form-grid input:focus{border-color:#111;box-shadow:0 0 0 1px #111}.form-grid label.full{grid-column:1/-1}.checkbox{display:flex;align-items:center;gap:9px}.checkbox span{margin:0!important;font-weight:400!important}.sqlite-note{margin:20px 22px 24px;padding:16px;background:var(--soft);border-left:3px solid #111}.test-result{min-height:0;margin:0 22px 22px;padding:0}.test-result:not(:empty){padding:11px 13px;border:1px solid}.test-result.success{color:var(--success);background:#f1f9f4}.test-result.error{color:var(--danger);background:#fff5f5}.test-result.testing{color:#555;background:#f5f5f5}.outline-button,.primary-button{border:1px solid #111;padding:10px 16px;background:#fff;color:#111;font-weight:700;cursor:pointer}.primary-button{display:inline-flex;align-items:center;justify-content:center;background:#111;color:#fff;text-decoration:none}.outline-button:disabled,.primary-button:disabled{cursor:not-allowed;opacity:.45}.install-actions{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-top:3px solid #111}.install-actions strong,.install-actions small{display:block}.install-actions small{color:#888}.install-actions .primary-button{min-width:190px;height:46px}.success-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:#111}.success-card{width:min(580px,100%);padding:48px;background:#fff;text-align:center;border-top:5px solid #111}.success-mark{display:grid;place-items:center;width:58px;height:58px;margin:0 auto 20px;background:#111;color:#fff;font-size:28px}.success-card p{color:#777}.success-card dl{margin:28px 0;border:1px solid var(--line);text-align:left}.success-card dl div{display:grid;grid-template-columns:140px 1fr;padding:11px 14px;border-bottom:1px solid var(--line)}.success-card dl div:last-child{border:0}.success-card dt{color:#888}.success-card dd{margin:0;font-weight:700}.success-card .primary-button{width:100%;height:48px}.success-card>small{display:block;margin-top:18px;color:#888}@media(max-width:720px){.install-header{padding:0 16px}.install-header>div{display:none}.install-shell{width:min(100% - 20px,1120px);margin-top:22px}.intro h1{font-size:28px}.steps{grid-template-columns:1fr 1fr}.steps li:nth-child(2){border-right:0}.steps li:nth-child(-n+2){border-bottom:1px solid var(--line)}.check-grid,.form-grid,.database-types{grid-template-columns:1fr}.form-grid label.full{grid-column:auto}.install-card>header,.install-actions{align-items:flex-start}.install-actions{flex-direction:column}.install-actions .primary-button{width:100%}.success-card{padding:34px 22px}.success-card dl div{grid-template-columns:110px 1fr}}

/* V2 · 与后台一致的蓝白安装体验 */
:root{--black:#2563eb;--ink:#172033;--muted:#6b7890;--line:#e3e9f2;--soft:#f5f8fd;--danger:#cf3340;--success:#138a5b;--primary:#2563eb;--primary-hover:#1d4ed8}
body{background:radial-gradient(circle at 10% 0,rgba(59,130,246,.07),transparent 26%),#f5f7fb;color:var(--ink)}
.install-header{height:68px;background:rgba(255,255,255,.96);color:#7e8ba1;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(31,42,68,.02);backdrop-filter:blur(12px)}
.brand{color:#172033}.brand span{width:36px;height:36px;color:#fff;background:linear-gradient(145deg,#3b82f6,#1d4ed8);border-radius:10px;box-shadow:0 7px 18px rgba(37,99,235,.2);font-size:11px}.brand strong{font-size:16px}
.install-shell{margin-top:38px}.eyebrow{color:#5b8def}.intro h1,.success-card h1{color:#172033}.intro p{color:#718097}
.steps{overflow:hidden;border-color:var(--line);border-radius:11px;box-shadow:0 1px 2px rgba(31,42,68,.03)}.steps li{border-right-color:var(--line);color:#8692a5;background:#fff}.steps li.active{color:#fff;background:linear-gradient(135deg,#3b82f6,#2563eb)}
.alert{border:1px solid #fecdd3;border-left:4px solid var(--danger);border-radius:9px;background:#fff4f5}
.install-card{border-color:var(--line);border-radius:13px;box-shadow:0 1px 2px rgba(31,42,68,.04),0 10px 28px rgba(31,42,68,.035);overflow:hidden}.install-card>header{border-bottom-color:#edf1f6}.install-card header small{color:#7195d2}.install-card h2{color:#26324a}.status-pill{border-radius:7px;font-weight:600}.status-pill.ok{color:#087a4e;border-color:#bcebd6;background:#ecfdf5}.status-pill.bad{color:#bd2e39;border-color:#fecdd3;background:#fff1f2}
.check-grid{background:var(--line)}.check-row{background:#fff}.check-icon{border-radius:7px}.passed .check-icon{color:#087a4e;border-color:#bcebd6;background:#ecfdf5}.failed .check-icon{color:#c3313a;border-color:#fecdd3;background:#fff1f2}.check-row small,.check-row em{color:#929daf}
.database-types span{border-color:#dfe5ee;border-radius:9px;background:#fbfcfe}.database-types input:checked+span{padding:14px 16px;color:#17499f;border:2px solid #5b8def;background:#eff6ff;box-shadow:0 0 0 3px rgba(37,99,235,.06)}.database-types small,.form-grid small,.muted{color:#8995a8}
.form-grid label>span{color:#48566e}.form-grid input:not([type=checkbox]){border-color:#d8e0eb;border-radius:8px;color:#334058}.form-grid input:focus{border-color:#86abf2;box-shadow:0 0 0 3px rgba(37,99,235,.09)}
.sqlite-note{color:#536078;background:#f4f8ff;border-left-color:var(--primary);border-radius:0 8px 8px 0}.test-result:not(:empty){border-radius:8px}.test-result.success{border-color:#bcebd6;background:#effcf6}.test-result.error{border-color:#fecdd3;background:#fff3f4}.test-result.testing{color:#536078;border-color:#dfe6ef;background:#f7f9fc}
.outline-button,.primary-button{border-color:#d6dfeb;border-radius:8px;color:#43516a;background:#fff}.outline-button:hover{color:var(--primary);border-color:#9bbaf2;background:#f8fbff}.primary-button{color:#fff;background:var(--primary);border-color:var(--primary);box-shadow:0 6px 15px rgba(37,99,235,.17)}.primary-button:hover{background:var(--primary-hover);border-color:var(--primary-hover)}
.install-actions{border:1px solid var(--line);border-top:3px solid var(--primary);border-radius:11px;box-shadow:0 8px 26px rgba(31,42,68,.04)}.install-actions small{color:#8995a8}
.success-page{background:radial-gradient(circle at 50% 15%,rgba(59,130,246,.14),transparent 32%),#f1f6fd}.success-card{border:1px solid #dfe7f2;border-top:5px solid var(--primary);border-radius:16px;box-shadow:0 28px 80px rgba(35,62,105,.13)}.success-mark{background:var(--primary);border-radius:16px;box-shadow:0 10px 24px rgba(37,99,235,.2)}.success-card p,.success-card dt,.success-card>small{color:#7f8b9f}.success-card dl{border-color:var(--line);border-radius:9px;overflow:hidden}.success-card dl div{border-bottom-color:var(--line);background:#fbfcfe}
@media(max-width:720px){.install-shell{margin-top:20px}.steps{border-radius:9px}.install-card{border-radius:10px}.install-card>header{padding:17px}.database-types,.form-grid{padding-right:17px;padding-left:17px}.sqlite-note{margin-right:17px;margin-left:17px}.install-actions{border-radius:10px}}

/* V2.1 安装向导可读性优化 */
body{font-size:15px;line-height:1.65}.intro p,.success-card p{font-size:14px}.eyebrow,.install-card header small,.status-pill{font-size:12px}.steps li{font-size:13px}.check-row strong{font-size:14px}.check-row small{font-size:13px;line-height:1.55}.check-row em{font-size:12px}.database-types small,.form-grid small,.muted,.install-actions small,.success-card>small{font-size:12px;line-height:1.6}.form-grid label>span{font-size:13px}.form-grid input:not([type=checkbox]){height:44px;font-size:15px}.outline-button,.primary-button{font-size:14px}.success-card dt,.success-card dd{font-size:14px}
.brand{gap:0}