:root{--navy:#14295E;--navy2:#0E1D45;--gold:#C9952E;--gold2:#E2B455;--ink:#1A2340;--muted:#8A93A8;--line:#E8ECF3;--bg:#F3F5FA;--qa:#2F6BD8;--img:#7B4FD6}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
#app{max-width:480px;margin:0 auto;min-height:100vh;position:relative;background:var(--bg)}
a{color:inherit;text-decoration:none;cursor:pointer}
.pg{display:none;min-height:100vh;padding-bottom:84px}
.pg.on{display:block;animation:in .25s}
@keyframes in{from{opacity:.4}to{opacity:1}}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:10px 18px;font-size:15px;font-weight:600;background:var(--navy);color:#fff;cursor:pointer;font-family:inherit}
.btn.gold{background:linear-gradient(135deg,var(--gold2),var(--gold));color:#fff;box-shadow:0 8px 20px -8px rgba(201,149,46,.7)}
.btn.ghost{background:#fff;color:var(--navy);border:1px solid #D4DAE6}
.btn.big{display:flex;width:100%;height:52px;font-size:17px;border-radius:26px;margin:16px 0 8px}
.btn:disabled{opacity:.5}
.card{background:#fff;border-radius:18px;padding:18px;margin-bottom:14px;box-shadow:0 4px 18px rgba(20,41,94,.06)}
.hint{font-size:13px;color:var(--muted);margin:4px 0}
.hint.center{text-align:center;margin:18px 0}
.sec{font-size:16px;margin:22px 4px 10px}
.ic{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px}
.ic-qa{background:linear-gradient(135deg,#4A86E8,var(--qa))}.ic-img{background:linear-gradient(135deg,#9D73EA,var(--img))}

/* 兑换 */
#pg-redeem{background:linear-gradient(180deg,var(--navy) 0,var(--navy2) 420px,var(--bg) 420px)}
.hero{padding:28px 24px 26px;color:#fff}
.bank{display:flex;align-items:center;gap:10px;font-size:15px;opacity:.95}
.logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--gold2),var(--gold))}
.hero h1{font-size:34px;line-height:1.25;margin:22px 0 10px;letter-spacing:1px}
.hero h1 em{font-style:normal;color:var(--gold2)}
.lead{color:#C7D0E6;margin:0 0 16px}
.pill{display:inline-block;background:rgba(255,255,255,.1);color:var(--gold2);border-radius:20px;padding:6px 14px;font-size:13px;font-weight:600}
.sheet{padding:0 16px}
.card h3{margin:0;font-size:17px}
.codein{width:100%;height:56px;margin:12px 0 4px;border:1.5px solid var(--gold);border-radius:14px;background:#FFFBF2;font-size:22px;letter-spacing:3px;text-align:center;font-weight:600;color:var(--navy);outline:none;font-family:ui-monospace,Menlo,monospace}
.codein.err{border-color:#D9534F;background:#FFF5F5}
.gift .quota{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.gift .quota b{font-size:38px;color:var(--gold);line-height:1}
.gift .quota span{color:var(--gold);font-weight:600;margin-right:12px}
.gift .quota i{font-style:normal;color:var(--muted);font-size:13px;margin-left:auto}
.feats{display:grid;grid-template-columns:1fr 1fr;padding-top:14px;text-align:center}
.feats div{display:flex;flex-direction:column;align-items:center;gap:4px}
.feats small{color:var(--muted);font-size:12px}
.agree{text-align:center;font-size:12px;color:var(--muted)}
.agree a{color:var(--navy)}
.notes{background:#fff;border-radius:18px;margin:0;padding:14px 16px 14px 32px;font-size:13px;color:#4A5470}
.notes li{margin:4px 0}

/* 首页 */
.top{background:var(--navy);color:#fff;padding:24px 22px 64px;border-radius:0 0 24px 24px}
.top .tt{text-align:center;font-weight:700;font-size:18px;margin-bottom:18px}
.top .sub,.pg .sub{color:#A9B4CF;font-size:13px;margin:4px 0}
.big2{display:flex;align-items:baseline;gap:6px}
.big2 b{font-size:46px;line-height:1.05;font-weight:700}
.big2 span{color:var(--gold2);font-weight:600;margin-right:18px;white-space:nowrap}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 16px;margin-top:-46px}
.tile{background:#fff;border-radius:18px;padding:18px;display:flex;flex-direction:column;align-items:center;gap:4px;box-shadow:0 6px 20px rgba(20,41,94,.08)}
.tile small{color:var(--muted)}.tile i{font-style:normal}
#pg-home .sec,#pg-home .card{margin-left:16px;margin-right:16px}
.list{padding:4px 16px}
.li{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.li:last-child{border:0}
.li span{color:var(--muted)}
.li .meta{font-size:12px;color:var(--muted)}
.li .tag{font-size:12px;padding:3px 10px;border-radius:12px;background:#EEF1F7;color:var(--muted)}
.li .tag.ok{background:#E9F6EE;color:#2E8B57}
.li .num{color:var(--gold);font-weight:600}
.empty{color:var(--muted);text-align:center;padding:16px;font-size:13px}

/* 顶栏 */
.bar{position:sticky;top:0;z-index:5;display:grid;grid-template-columns:60px 1fr auto;align-items:center;height:52px;padding:0 12px;background:var(--navy);color:#fff}
.bar b{text-align:center;font-size:17px}
.bar.light{background:#fff;color:var(--ink);border-bottom:1px solid var(--line)}
.back{font-size:30px;line-height:1;padding:0 8px}
.chip{font-size:12px;padding:4px 10px;border-radius:14px;background:rgba(255,255,255,.14)}
.chip.gold{background:#FBF1DC;color:#A87414;font-weight:600}
.pad{padding:16px}

/* 问答 */
#pg-chat{display:none;flex-direction:column;height:100vh;padding-bottom:0}
#pg-chat.on{display:flex}
.msgs{flex:1;overflow:auto;padding:16px 14px 8px}
.m{display:flex;margin:10px 0}
.m.u{justify-content:flex-end}
.m .bub{max-width:82%;padding:10px 14px;border-radius:16px;white-space:pre-wrap;word-break:break-word;font-size:15px}
.m.u .bub{background:var(--navy);color:#fff;border-bottom-right-radius:4px}
.m.a .bub{background:#fff;border-bottom-left-radius:4px;box-shadow:0 2px 8px rgba(20,41,94,.05)}
.m.a .bub.typing::after{content:"▍";color:var(--gold);animation:bl 1s infinite}
@keyframes bl{50%{opacity:0}}
.welcome{background:#fff;border-radius:16px;padding:14px 16px;font-size:14px;color:#4A5470;margin-top:6px}
.suggest{display:flex;gap:8px;overflow-x:auto;padding:0 14px 8px}
.suggest a{flex:none;background:#fff;border:1px solid var(--line);border-radius:16px;padding:6px 12px;font-size:13px;color:#4A5470}
.composer{display:flex;align-items:flex-end;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);margin-bottom:64px}
.composer textarea{flex:1;border:1px solid #D4DAE6;border-radius:18px;padding:9px 14px;font:inherit;resize:none;max-height:120px;outline:none}
.newc{width:38px;height:38px;border-radius:50%;border:1px solid #D4DAE6;background:#fff;font-size:20px;color:var(--muted)}
.send{height:38px;border-radius:19px;padding:0 16px}

/* 作图 */
.prompt{background:#fff;border-radius:18px;padding:14px}
.prompt textarea{width:100%;border:0;font:inherit;font-size:16px;resize:none;outline:none}
.styles{display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line);padding-top:12px}
.styles a{border:1px solid #D4DAE6;border-radius:18px;padding:5px 14px;font-size:14px;color:#4A5470}
.styles a.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.ideas{display:flex;gap:8px;overflow-x:auto;margin-top:12px}
.ideas a{flex:none;font-size:12px;color:#A87414;background:#FBF1DC;border-radius:12px;padding:4px 10px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cell{position:relative;aspect-ratio:1;border-radius:16px;overflow:hidden;background:linear-gradient(135deg,#DDE4F2,#EEF1F7);display:flex;align-items:center;justify-content:center}
.cell img{width:100%;height:100%;object-fit:cover}
.cell .lab{position:absolute;left:8px;bottom:8px;right:8px;font-size:12px;color:#fff;background:rgba(0,0,0,.35);border-radius:8px;padding:2px 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cell .gen{text-align:center;color:var(--muted);font-size:13px}
.spin{width:30px;height:30px;border:3px solid #C9D2E6;border-top-color:var(--gold);border-radius:50%;animation:sp 1s linear infinite;margin:0 auto 8px}
@keyframes sp{to{transform:rotate(360deg)}}
.aimark{font-size:12px;color:var(--muted);background:#fff;border-radius:12px;padding:10px 12px;margin-top:14px}

/* 作品详情 */
.pg.dark{background:var(--navy2);color:#fff}
.wimg{width:100%;border-radius:18px;display:block;-webkit-touch-callout:default}
.pg.dark h2{font-size:20px;margin:16px 0 4px}
.savebox{background:#fff;color:var(--ink);border-radius:18px;padding:16px;margin-top:18px;font-size:14px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}

/* 底部导航 */
.tabs{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;display:none;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line);padding:6px 0 calc(6px + env(safe-area-inset-bottom));z-index:10}
.tabs.on{display:grid}
.tabs a{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--muted)}
.tabs a i{font-style:normal;font-size:20px;line-height:1.3}
.tabs a.on{color:var(--navy);font-weight:600}

.modal{position:fixed;inset:0;background:rgba(10,20,50,.5);display:none;align-items:flex-end;justify-content:center;z-index:50}
.modal.on{display:flex}
.mbox{background:#fff;width:100%;max-width:480px;border-radius:22px 22px 0 0;padding:22px 20px calc(16px + env(safe-area-inset-bottom));max-height:80vh;overflow:auto}
.mbox h3{margin:0 0 10px}
.mb{font-size:14px;color:#4A5470}
.mb p{margin:6px 0}
.toast{position:fixed;left:50%;top:40%;transform:translate(-50%,-50%);background:rgba(15,25,55,.88);color:#fff;padding:12px 18px;border-radius:12px;font-size:14px;display:none;z-index:60;max-width:80%;text-align:center}
.toast.on{display:block}
.ok-anim{animation:pop .5s}
@keyframes pop{0%{transform:scale(.9)}60%{transform:scale(1.04)}100%{transform:scale(1)}}