:root{--bg:#fff;--bg2:#f9fafb;--tx:#111827;--tx2:#6b7280;--a:#7c3aed;--wa:#25D366;--dv:#e5e7eb;--nh:72px}
:root.dark{--bg:#0f172a;--bg2:#1e293b;--tx:#f1f5f9;--tx2:#94a3b8;--dv:#334155}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent;color-scheme:light dark;scroll-padding-top:var(--nh)}
body{font-family:Inter,'Segoe UI',system-ui,-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;color:var(--tx);background:var(--bg);line-height:1.5;display:flex;justify-content:center;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
.f{width:100%;max-width:460px;overflow-x:hidden}

/* progress bar */
.pb{position:fixed;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:460px;height:2.5px;background:transparent;z-index:1001;pointer-events:none}
.pb div{height:100%;width:0;background:var(--a);transition:width .1s linear}

.b2{background:var(--bg2)}

/* nav */
.n{position:fixed;top:0;z-index:1000;width:100%;max-width:460px;height:var(--nh);padding:0 1.25rem;background:rgba(255,255,255,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--dv)}
:root.dark .n{background:rgba(15,23,42,.85)}
.ni{display:flex;align-items:center;gap:.5rem;height:100%}
.ni img{height:24px}
:root.dark .ni img{filter:invert(1)}
.nb{background:var(--a);color:#fff;padding:.2rem .55rem;border-radius:999px;font-size:.58rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase}
.nr{display:flex;align-items:center;gap:.25rem;margin-left:auto}
.ib{background:none;border:none;cursor:pointer;color:var(--tx2);padding:6px;display:flex;align-items:center;justify-content:center}
.ib svg{width:17px;height:17px}
.ls{position:relative}
.ls-btn{background:none;border:none;cursor:pointer;color:var(--tx2);padding:6px;display:flex;align-items:center;justify-content:center}
.ls-btn svg{width:17px;height:17px}
.ls-drop{position:absolute;top:100%;right:0;margin-top:4px;background:var(--bg);border:1px solid var(--dv);border-radius:12px;padding:.35rem;min-width:160px;box-shadow:0 8px 32px rgba(0,0,0,.08);opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity .2s,transform .2s}
.ls-drop.on{opacity:1;pointer-events:auto;transform:translateY(0)}
.ls-drop button{display:flex;align-items:center;gap:.5rem;width:100%;background:none;border:none;padding:.55rem .65rem;border-radius:8px;cursor:pointer;font-size:.78rem;font-weight:600;color:var(--tx);font-family:inherit;text-align:left}
.ls-drop button:hover{background:var(--bg2)}
.ls-drop button .flag{width:20px;height:14px;border-radius:2px;flex-shrink:0}
.bu{display:flex;flex-direction:column;gap:4px;cursor:pointer;background:none;border:none;padding:6px;z-index:1101;position:relative}
.bu span{width:19px;height:2px;background:var(--tx);border-radius:2px;transition:transform .25s,opacity .25s;display:block}
.bu.on span:nth-child(1){transform:translateY(6px)rotate(45deg)}
.bu.on span:nth-child(2){opacity:0}
.bu.on span:nth-child(3){transform:translateY(-6px)rotate(-45deg)}

.mo{position:fixed;inset:0;z-index:1099;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .25s}
.mo.on{opacity:1;pointer-events:auto}
.mp{position:fixed;top:0;right:0;z-index:1100;width:280px;height:100dvh;background:#fff;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);padding:0 1.25rem 1.25rem}
.mp.on{transform:translateX(0)}
.mh{display:flex;align-items:center;justify-content:space-between;height:72px}
.mh img{height:20px}
:root.dark .mh img{filter:invert(1)}
.mp a{display:block;padding:.85rem .5rem;font-size:.92rem;font-weight:600;color:var(--tx);border-radius:8px}
.mp a:active{background:rgba(124,58,237,.08);color:var(--a)}

.h{position:relative;height:480px;display:flex;align-items:flex-end;justify-content:center;overflow:hidden;color:#fff;background:#0f172a}
.hbg{position:absolute;inset:0;background:url(public/images/mission.webp)center/cover no-repeat;opacity:0;transition:opacity .6s}
.hbg.o{opacity:1}
.ho{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(15,23,42,.15)0%,rgba(15,23,42,.5)35%,rgba(15,23,42,.9)100%)}
.hc{position:relative;z-index:2;padding:3.5rem 1.5rem 2rem;width:100%;text-align:center}
.hc h1{font-size:1.5rem;font-weight:800;letter-spacing:-.035em;line-height:1.15;margin-bottom:.6rem}
.ht{display:flex;flex-wrap:wrap;justify-content:center;gap:.35rem;margin-bottom:.85rem}
.ht span{display:inline-flex;align-items:center;gap:.3rem;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);padding:.25rem .6rem;border-radius:999px;font-size:.7rem;font-weight:600}
.ht span span{background:none;border:none;padding:0;font:inherit}
.ht span svg{width:10px;height:10px;opacity:.6;flex-shrink:0}
.hc p{font-size:.82rem;font-weight:400;opacity:.7;line-height:1.5}

.tr{display:flex;justify-content:center;gap:1rem;padding:.7rem 1rem;border-bottom:1px solid var(--dv);font-size:.66rem;font-weight:600;color:var(--tx2)}

.sec{padding:3.5rem 1.5rem}
.lbl{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--tx2);margin-bottom:2rem}
.wx{display:inline-flex;align-items:center;gap:.4rem;background:var(--wa);color:#fff;font-weight:700;border-radius:999px;transition:transform .15s;padding:.7rem 1.6rem;font-size:.88rem}
.wx:active{transform:scale(.96)}
.wx svg{width:18px;height:18px}

.sa{text-align:center;padding:3rem 1.5rem;position:relative;overflow:hidden}
.sa:before,.sa:after{content:'';position:absolute;border-radius:50%;pointer-events:none}
.sa:before{top:-10%;right:-25%;width:240px;height:240px;background:radial-gradient(circle,rgba(124,58,237,.06)0%,transparent 70%)}
.sa:after{bottom:-5%;left:-20%;width:180px;height:180px;background:radial-gradient(circle,rgba(124,58,237,.04)0%,transparent 70%)}
.sa .ey{font-size:.58rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;color:var(--tx2);margin-bottom:.3rem}
.sa .num{font-size:4rem;font-weight:800;letter-spacing:-.06em;line-height:1;color:var(--a);position:relative;display:inline-block}
.sa .num:after{content:'';position:absolute;left:15%;right:15%;bottom:-2px;height:2px;background:var(--a);opacity:.12;border-radius:2px}
.sa .un{font-size:.8rem;font-weight:600;color:var(--tx2);margin:.3rem 0 .7rem}
.sa .tg{display:flex;flex-direction:column;align-items:center;gap:.35rem;margin-bottom:1.15rem}
.sa .tg>div{display:flex;flex-wrap:wrap;justify-content:center;gap:.3rem}
.sa .tg span{font-size:.7rem;font-weight:600;color:var(--tx);padding:.25rem .6rem;border-radius:999px;background:var(--bg2);border:1px solid var(--dv)}
.sa .wx{max-width:80%;margin:0 auto;display:inline-flex}

.ti{position:relative;padding-left:3rem}
.ti:before{content:'';position:absolute;left:calc(3rem + 21px);top:15px;bottom:15px;width:2px;height:0;background:var(--a);opacity:.12;transition:height 1s cubic-bezier(.22,1,.36,1)}
.ti.o:before{height:calc(100% - 30px)}
.ts{display:flex;align-items:flex-start;gap:.8rem;padding:.85rem 0}
.tn{width:42px;height:42px;min-width:42px;border-radius:50%;background:var(--a);color:#fff;display:flex;align-items:center;justify-content:center;z-index:1;font-size:.78rem;font-weight:700;opacity:0;transform:scale(.4);transition:opacity .35s,transform .35s cubic-bezier(.34,1.56,.64,1)}
.tn svg{width:17px;height:17px}
.ts.o .tn{opacity:1;transform:scale(1)}
.tb{padding-top:.15rem}
.tb h4{font-size:.85rem;font-weight:600;color:var(--tx);margin-bottom:.04rem}
.tb .tm{font-size:.7rem;font-weight:500;color:var(--tx2);margin-bottom:.2rem}
.tb .tx{display:flex;flex-direction:column;gap:.1rem;font-size:.78rem;font-weight:500;color:var(--tx2)}

.fi{border-bottom:1px solid var(--dv)}
.fi:last-child{border-bottom:none}
.fq{width:100%;background:none;border:none;text-align:left;padding:1rem 0;font-size:.85rem;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--tx);font-family:inherit}
.fa{transition:transform .3s cubic-bezier(.34,1.56,.64,1);display:flex}
.fa svg{width:18px;height:18px;color:var(--a)}
.fi.on .fa{transform:rotate(135deg)}
.fi.on .fq{color:var(--a)}
.fc{max-height:0;overflow:hidden;transition:max-height .35s,padding .35s;color:var(--tx2);font-size:.78rem;line-height:1.55}
.fi.on .fc{max-height:400px;padding-bottom:1rem}

.sb{position:fixed;bottom:0;z-index:998;width:100%;max-width:460px;padding:.55rem 1.25rem;padding-bottom:max(.55rem,env(safe-area-inset-bottom));background:rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--dv);transform:translateY(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;gap:.75rem}
.sb.on{transform:translateY(0)}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(37,211,102,.4)}50%{box-shadow:0 0 0 10px rgba(37,211,102,0)}}
.sb.pulse .wx{animation:pulse 1.5s ease-out 2}
.si{flex:1;min-width:0}
.si .st{font-size:.72rem;font-weight:700;color:var(--tx)}
.si .ss{font-size:.64rem;color:var(--a);font-weight:600}
.sb .wx{padding:.45rem .9rem;font-size:.76rem}
.sb .wx svg{width:14px;height:14px}

.bt{position:fixed;bottom:78px;right:calc(50% - 230px + 1rem);z-index:997;width:34px;height:34px;border-radius:50%;background:var(--bg);border:1px solid var(--dv);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(8px);transition:opacity .25s,transform .25s}
.bt.on{opacity:1;pointer-events:auto;transform:translateY(0)}
.bt svg{width:15px;height:15px;color:var(--tx2)}

footer{padding:2.5rem 1.5rem 4.5rem;font-size:.66rem;font-weight:500;color:var(--tx2);text-align:center}
footer nav{display:flex;gap:.75rem;justify-content:center;margin-bottom:.4rem}

:root.dark .mp{background:#1e293b}
:root.dark .sb{background:rgba(15,23,42,.85)}

@media(min-width:461px){.bt{right:calc((100vw - 460px)/2 + 1rem)}}
@media(max-width:460px){.bt{right:1rem}}
@media(max-width:360px){.hc h1{font-size:1.3rem}}