:root{--bg-start:#dff4ff;--bg-end:#eadcff;--surface:rgba(255,255,255,.84);--surface-strong:rgba(255,255,255,.94);--card-border:rgba(255,255,255,.78);--text-main:#22252f;--text-sub:#667085;--primary:#6c63ff;--primary-2:#4f8df7;--primary-soft:#f1efff;--shadow-sm:0 8px 20px rgba(43,53,88,.08);--shadow-md:0 14px 35px rgba(43,53,88,.12);--radius-xl:30px;--radius-lg:24px;--radius-md:18px;--radius-sm:14px;--nav-height:86px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{height:100%;font-size:16px}body{margin:0;min-height:100%;font-family:Segoe UI,Hiragino Sans,Yu Gothic UI,sans-serif;color:var(--text-main);background:radial-gradient(circle at top left,rgba(255,255,255,.6),transparent 35%),linear-gradient(180deg,var(--bg-start),var(--bg-end));-webkit-text-size-adjust:100%;text-size-adjust:100%;font-size:clamp(14px,2.5vw,18px)}button,input,select,textarea{font:inherit}button{border:none;background:none;cursor:pointer}img{max-width:100%;display:block}a{text-decoration:none;color:inherit}.app-shell{width:100%;max-width:520px;min-height:100vh;margin:0 auto;position:relative;padding-bottom:calc(var(--nav-height) + env(safe-area-inset-bottom) + 14px);background:radial-gradient(circle at top right,rgba(255,255,255,.45),transparent 30%),linear-gradient(180deg,var(--bg-start),var(--bg-end))}.topbar{padding:18px 18px 10px;position:sticky;top:0;z-index:20;background:linear-gradient(180deg,#dff4ffe6,#dff4ffb8 60%,#dff4ff00);backdrop-filter:blur(10px)}.main-content{padding:8px 18px 22px}.brand{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:24px;background:#ffffffb8;border:1px solid rgba(255,255,255,.86);box-shadow:var(--shadow-sm)}.brand-logo{width:52px;height:52px;border-radius:18px;display:grid;place-items:center;font-size:24px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:0 10px 18px #6c63ff47;flex-shrink:0;overflow:hidden}.brand-logo img{width:100%;height:100%;object-fit:contain}.brand h1{margin:0;font-size:clamp(18px,4.5vw,24px);line-height:1.2;font-weight:800;letter-spacing:.01em}.brand p{margin:4px 0 0;font-size:clamp(12px,3vw,14px);color:var(--text-sub);line-height:1.4}.section-title{margin:6px 0 16px;font-size:clamp(20px,5vw,28px);line-height:1.25;font-weight:800;letter-spacing:.01em}.settings-card,.info-card{background:var(--surface);border:1px solid var(--card-border);box-shadow:var(--shadow-sm);border-radius:24px;padding:18px 16px;backdrop-filter:blur(12px)}.settings-card{display:grid;gap:0}.setting-row{width:100%;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;column-gap:14px;padding:16px 10px;border:none;border-bottom:1px solid rgba(102,112,133,.14);background:transparent;text-align:left}.setting-row:last-child{border-bottom:none;padding-bottom:14px}button.setting-row{cursor:pointer}button.setting-row:hover,.setting-row:hover{background:#f5f6ff;border-radius:12px}button.setting-row:active{transform:scale(.98)}.setting-row>span:first-child{min-width:0;font-size:14px;font-weight:700;color:var(--text-main);line-height:1.5;word-break:break-word}.value{color:var(--text-sub);font-weight:700;text-align:right;white-space:nowrap}.setting-row select{width:160px;max-width:100%;min-width:120px;padding:10px 12px;border-radius:12px;border:1px solid #d8dbe6;background:#fff;color:var(--text-main);font-size:14px;appearance:auto}.setting-action-btn{min-width:110px;border:none;padding:10px 14px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:14px;font-weight:700;cursor:pointer;box-shadow:var(--shadow-sm)}.setting-action-btn:active{transform:scale(.98)}.switch{position:relative;display:inline-block;width:52px;height:30px;flex-shrink:0}.switch input{position:absolute;opacity:0;width:0;height:0}.slider{position:absolute;inset:0;background:#d6d6de;border-radius:999px;transition:.25s;cursor:pointer}.slider:before{content:"";position:absolute;width:22px;height:22px;left:4px;top:4px;background:#fff;border-radius:50%;transition:.25s;box-shadow:0 2px 6px #00000026}.switch input:checked+.slider{background:var(--primary)}.switch input:checked+.slider:before{transform:translate(22px)}.info-card{margin-top:16px}.info-card h3{margin:0 0 8px;font-size:18px;line-height:1.3;font-weight:800}.info-card p{margin:0;color:var(--text-sub);font-size:14px;line-height:1.7}.contact-box{margin-top:20px;text-align:center;padding:20px 18px;border:1.5px solid rgba(79,70,229,.18);border-radius:24px;background:#ffffffe6;box-shadow:0 10px 24px #4f46e514}.contact-box h3{margin:0 0 8px;font-size:18px;font-weight:800;color:#111827}.contact-box p{margin:0;font-size:13px;line-height:1.8;color:#4b5563}.contact-btn{display:inline-flex;align-items:center;justify-content:center;min-width:220px;margin-top:14px;padding:13px 20px;background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff!important;border-radius:14px;text-decoration:none;font-weight:700;font-size:14px;letter-spacing:.02em;box-shadow:0 8px 18px #2563eb38}.contact-btn:hover{transform:translateY(-2px);opacity:.96;box-shadow:0 12px 22px #2563eb47}.contact-btn:active{transform:scale(.98)}.contact-note{font-size:11px!important;color:#6b7280!important;margin-top:10px!important}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:30;width:100%;max-width:520px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:#ffffffe6;backdrop-filter:blur(16px);border-top:1px solid rgba(50,60,90,.08);box-shadow:0 -8px 30px #2b35580f}.nav-item{min-height:58px;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:#5f6475;transition:background .18s ease,color .18s ease,transform .18s ease}.nav-item.active{background:var(--primary-soft);color:var(--primary);font-weight:800}.nav-item:active{transform:scale(.97)}.nav-icon{font-size:20px;line-height:1}.nav-text{font-size:12px;line-height:1;letter-spacing:.01em}.hidden{display:none!important}:focus-visible{outline:3px solid rgba(79,141,247,.35);outline-offset:3px;border-radius:18px}@media (max-width:480px){.setting-row{grid-template-columns:minmax(0,1fr) 140px;column-gap:10px}.setting-row select{width:140px;min-width:100px;font-size:13px}.setting-action-btn{min-width:96px;font-size:13px;padding:9px 12px}}@media (max-width:360px){.brand h1{font-size:20px}.setting-row{grid-template-columns:minmax(0,1fr) 120px}.setting-row>span:first-child{font-size:13px}.contact-btn{min-width:100%;width:100%}}@media (min-width:768px){body{padding:18px 0;font-size:16px}.app-shell{border-radius:34px;overflow:hidden;min-height:calc(100vh - 36px);box-shadow:0 18px 60px #2b355824}.main-content{padding:10px 20px 24px}.bottom-nav{border-radius:22px 22px 0 0}}