:root{
  --ink:#0B2A5B; --sky:#7FA8D9; --ov:#051C4D;
  --paper:#F4F6F9; --paper-2:#E9EEF5; --surface:#FFFFFF;
  --text:#0B1220; --text-2:#2A3446; --text-3:#4A5568;
  --line:#D5DCE6; --line-2:#E3E8EF;
  --r:28px; --r2:20px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0C1018; --paper-2:#151B27; --surface:#111826;
    --text:#F2F5F9; --text-2:#C3CCDA; --text-3:#9AA5B8;
    --line:#26303F; --line-2:#1C2432; --sky:#8FB6E3; --ink:#1E4A8F;
  }
}
:root[data-theme="dark"]{
  --paper:#0C1018; --paper-2:#151B27; --surface:#111826;
  --text:#F2F5F9; --text-2:#C3CCDA; --text-3:#9AA5B8;
  --line:#26303F; --line-2:#1C2432; --sky:#8FB6E3; --ink:#1E4A8F;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);
  font-family:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:"Familjen Grotesk","Inter","Noto Sans SC","PingFang SC",sans-serif;margin:0}
:root[data-lang="zh"] h1,:root[data-lang="zh"] h2,:root[data-lang="zh"] h3,:root[data-lang="zh"] h4{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:0}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--sky);outline-offset:3px}
.w{max-width:1200px;margin:0 auto;padding-inline:28px}
.zh,.es{display:none!important}
:root[data-lang="zh"] .zh{display:inline!important}
:root[data-lang="zh"] .zh.blk{display:block!important}
:root[data-lang="es"] .es{display:inline!important}
:root[data-lang="es"] .es.blk{display:block!important}
:root[data-lang="zh"] .en,:root[data-lang="es"] .en{display:none!important}
.lbl{font-family:"IBM Plex Mono",ui-monospace,monospace;font-weight:500;text-transform:uppercase;letter-spacing:.16em;font-size:13px;color:var(--text-3)}

/* ---------- brand ---------- */
.wm{font-family:"Familjen Grotesk",sans-serif;line-height:1;letter-spacing:-.035em;font-weight:600;white-space:nowrap}
.wm .i{color:var(--ink)} .wm .d{color:var(--sky)}
.lk{display:flex;align-items:center;gap:calc(var(--fs)*.42);text-decoration:none}
.lk svg{width:calc(var(--fs)*1.34);height:auto;flex:none}
.lk .tx{display:flex;flex-direction:column;gap:calc(var(--fs)*.18)}
.lk .wm{font-size:var(--fs)}
.lk .sub{font-size:calc(var(--fs)*.52);line-height:1;letter-spacing:.03em;color:var(--ink)}

/* ---------- nav ---------- */
nav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(12px)}
.navin{display:flex;align-items:center;gap:28px;padding-block:18px}
.navin .lk{--fs:42px}
@media(max-width:820px){.navin .lk{--fs:30px}}
.nlinks{display:flex;gap:30px;margin-left:auto;font-size:19px;font-weight:500;color:var(--text)}
@media(max-width:1100px){.nlinks{gap:22px;font-size:17px}}
:root[data-lang="zh"] .nlinks{letter-spacing:.04em}
.nlinks a{color:inherit;text-decoration:none;position:relative;padding-block:6px;transition:color .18s}
.nlinks a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--sky);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .22s cubic-bezier(.2,.75,.25,1)}
.nlinks a:hover{color:var(--ink)} .nlinks a:hover::after{transform:scaleX(1)}
@media(max-width:820px){.nlinks{display:none}}
@media(max-width:640px){.ntools .btn{display:none}.langbtn{font-size:15px;padding:9px 14px}}
.ntools{display:flex;align-items:center;gap:12px;margin-left:auto}
@media(min-width:821px){.ntools{margin-left:0}}
.langsel{position:relative}
.langbtn{display:flex;align-items:center;gap:9px;font:inherit;font-size:17px;font-weight:500;padding:11px 18px;border:1.5px solid var(--ink);background:transparent;color:var(--text);border-radius:999px;cursor:pointer;transition:background .15s,color .15s}
.langbtn:hover{background:var(--ink);color:#fff}
.langbtn:hover .lcode,.langbtn:hover .chev{color:inherit}
.langbtn .lcode{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.12em;color:var(--text-3)}
.langbtn .chev{width:10px;height:10px;flex:none;transition:transform .18s;color:var(--text-3)}
.langbtn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.langmenu{position:absolute;top:calc(100% + 8px);right:0;min-width:200px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 44px -18px rgba(18,26,46,.35);padding:6px;margin:0;list-style:none;z-index:60}
.langmenu li{display:flex;align-items:center;gap:11px;padding:11px 14px;font-size:16px;cursor:pointer;border-radius:12px;color:var(--text);user-select:none}
.langmenu li:hover,.langmenu li:focus-visible{background:var(--paper-2);outline:none}
.langmenu li .mark{width:10px;height:10px;border-radius:50%;flex:none;border:1.5px solid var(--line)}
.langmenu li[aria-selected="true"] .mark{background:var(--ink);border-color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:500;padding:14px 26px;background:var(--ink);color:#fff;border:1.5px solid var(--ink);border-radius:999px;cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s,color .15s;white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(18,26,46,.5)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff;box-shadow:none}
.btn.light{background:#fff;color:var(--ink);border-color:#fff}
.btn.light:hover{background:#EAF1FA}
.btn.onphoto{background:rgba(255,255,255,.9);color:var(--ink);border-color:transparent;backdrop-filter:blur(6px)}

/* ---------- hero ---------- */
.hero{padding-block:16px clamp(56px,8vw,96px)}
.herocard{position:relative;border-radius:var(--r);overflow:hidden;min-height:clamp(520px,58vw,660px);display:flex;align-items:center;background:#EDE9E1}
.herocard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:100% 50%}
.herocard::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(247,245,240,.96) 0%,rgba(247,245,240,.88) 38%,rgba(247,245,240,.35) 58%,rgba(247,245,240,0) 75%)}
@media(max-width:760px){.herocard::before{display:none}}
.herotx{position:relative;z-index:2;padding:clamp(28px,5vw,64px);max-width:640px}
.herotx .lbl{margin:0 0 22px;display:flex;align-items:center;gap:10px;color:var(--ink)}
.herotx .lbl::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--sky)}
h1{font-size:clamp(40px,5.4vw,66px);font-weight:500;letter-spacing:-.03em;line-height:1.02;margin:0 0 22px;text-wrap:balance;color:#0B1220}
h1 b{color:var(--ink);font-weight:500}
:root[data-lang="zh"] h1{font-size:clamp(32px,4.4vw,54px);font-weight:600;line-height:1.28}
.lede{font-size:clamp(17px,1.8vw,19px);line-height:1.7;color:#2A3446;max-width:44ch;margin:0 0 32px}
:root[data-lang="zh"] .lede{line-height:1.85}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
@media(max-width:760px){
  .herocard{min-height:0;display:block;background:var(--surface)}
  .herocard img{position:static;height:auto;aspect-ratio:16/10}
  .herotx{max-width:none}
  h1{color:var(--text)} .lede{color:var(--text-2)}
}

/* ---------- section frame ---------- */
section{position:relative}
.shead{margin:0 auto clamp(32px,4.5vw,52px);text-align:center;max-width:760px}
.shead .lbl{display:block;margin-bottom:16px}
h2{font-size:clamp(32px,4.2vw,50px);font-weight:500;letter-spacing:-.03em;line-height:1.06;margin:0 0 16px;text-wrap:balance}
:root[data-lang="zh"] h2{font-size:clamp(28px,3.6vw,42px);font-weight:600;line-height:1.3}
.sdesc{font-size:19px;line-height:1.7;color:var(--text-2);max-width:58ch;margin:0 auto}

/* ---------- two lines ---------- */
.lines{padding-block:clamp(48px,7vw,88px)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:860px){.pair{grid-template-columns:1fr}}
.pcard{border-radius:var(--r);background:var(--surface);border:1px solid var(--line);overflow:hidden;display:flex;flex-direction:column}
.pcard.dark{background:var(--ink);border-color:var(--ink);color:#F3F6FA}
.pcard img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pbody{padding:clamp(24px,3.4vw,40px);display:flex;flex-direction:column;flex:1}
.pcard .lbl{margin:0 0 16px}
.pcard.dark .lbl{color:#B9D0EC}
.pcard h3{font-size:clamp(26px,2.8vw,34px);font-weight:500;letter-spacing:-.025em;margin:0 0 8px;line-height:1.12}
:root[data-lang="zh"] .pcard h3{font-weight:600;line-height:1.35}
.pcard h3 span{color:var(--ink)} .pcard.dark h3 span{color:var(--sky)}
.pcard .who{font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);margin:0 0 22px}
.pcard.dark .who{color:#B9D0EC}
.pcard ul{margin:0 0 28px;padding:0;list-style:none;display:flex;flex-direction:column;gap:13px}
.pcard li{font-size:17px;line-height:1.6;color:var(--text-2);padding-left:24px;position:relative}
.pcard.dark li{color:#F3F6FA}
.pcard li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--ink)}
.pcard.dark li::before{background:var(--sky)}
.pcard .btn{align-self:flex-start;margin-top:auto}

.sharedrow{margin-top:18px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;align-items:stretch}
@media(max-width:860px){.sharedrow{grid-template-columns:1fr}}
.sharedrow img{width:100%;height:100%;min-height:260px;object-fit:cover}
.sharedtx{padding:clamp(24px,3.4vw,40px)}
.sharedtx h3{font-size:clamp(22px,2.4vw,28px);font-weight:500;letter-spacing:-.02em;margin:10px 0 10px}
.sharedtx p{margin:0 0 20px;color:var(--text-2);font-size:16.5px;line-height:1.7}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips span{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;padding:8px 14px;border-radius:999px;background:var(--paper-2);color:var(--text)}
.chips i{width:7px;height:7px;border-radius:50%;background:var(--sky)}

/* ---------- feature cards with photos ---------- */
.feat{padding-block:clamp(48px,7vw,88px)}
.fgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:760px){.fgrid{grid-template-columns:1fr}}
.fc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.fc:hover{transform:translateY(-3px);box-shadow:0 26px 48px -28px rgba(11,42,91,.4)}
.fc img{width:100%;aspect-ratio:4/3;object-fit:cover}
.fc .fb{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.fc .n{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.16em;color:var(--text-3)}
.fc h4{font-size:22px;font-weight:500;letter-spacing:-.015em;line-height:1.2}
:root[data-lang="zh"] .fc h4{font-weight:600}
.fc p{margin:0;font-size:16px;line-height:1.7;color:var(--text-2)}
.fc .meta{margin-top:auto;padding-top:14px;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);border-top:1px solid var(--line-2)}
.fc.wide{grid-column:1/-1;flex-direction:row}
.fc.wide img{width:52%;aspect-ratio:auto}
@media(max-width:760px){.fc.wide{flex-direction:column}.fc.wide img{width:100%;aspect-ratio:4/3}}

/* ---------- social posts visual (Commerce 05) ---------- */
.fc.wide.rev{flex-direction:row-reverse}
.sviz{width:52%;flex:none;background:var(--paper-2);display:flex;align-items:center;justify-content:center;gap:clamp(10px,1.6vw,18px);padding:clamp(24px,3.4vw,40px) 20px;min-height:340px}
.post{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 20px 38px -26px rgba(11,42,91,.5);flex:none}
.post .ph{display:block;overflow:hidden}
.fc .post img{width:100%;height:auto;object-fit:cover}
.post.sq{width:clamp(104px,14vw,158px);transform:translateY(10px)}
.post.sq img{aspect-ratio:4/5}
.post.st{width:clamp(92px,11.5vw,128px);transform:translateY(-14px)}
.post.st img{aspect-ratio:9/14}
.post.pn{width:clamp(98px,12.5vw,140px);transform:translateY(16px)}
.post.pn img{aspect-ratio:2/3}
.post .cap{padding:10px 11px 12px;display:flex;flex-direction:column;gap:6px}
.post .pl{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-2)}
.post .ln{height:6px;border-radius:3px;background:var(--line-2)}
.post .ln.s{width:62%}
@media(max-width:760px){.fc.wide.rev{flex-direction:column}.sviz{width:100%;min-height:0;padding:40px 16px 44px}}

/* ---------- platforms ---------- */
.plat{padding-block:clamp(48px,7vw,88px)}
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:760px){.pgrid{grid-template-columns:repeat(2,1fr)}}
.pg{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:24px 22px;display:flex;flex-direction:column;gap:12px;min-height:118px}
.pg b{font-size:20px;font-weight:500}
.pg>span{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);margin-top:auto}
.pg.soon{background:var(--paper-2);border-color:transparent}

/* ---------- embed ---------- */
.embed{padding-block:clamp(48px,7vw,88px)}
.ework{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
@media(max-width:860px){.ework{grid-template-columns:1fr}}
.ework img{width:100%;height:100%;min-height:320px;object-fit:cover}
.eright{padding:clamp(24px,3.4vw,40px);display:flex;flex-direction:column;gap:6px}
.step{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line-2)}
.step:last-of-type{border-bottom:0}
.step .k{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--text-3);flex:none;padding-top:5px;width:24px}
.step b{display:block;font-size:19px;font-weight:500;margin-bottom:4px;font-family:"Familjen Grotesk","Inter","Noto Sans SC",sans-serif}
:root[data-lang="zh"] .step b{font-family:"Noto Sans SC","PingFang SC",sans-serif;font-weight:600}
.step p{margin:0;font-size:15.5px;line-height:1.65;color:var(--text-2)}
.code{margin-top:14px;background:var(--ov);border-radius:16px;padding:18px 20px;overflow-x:auto;font-family:"IBM Plex Mono",monospace;font-size:13px;line-height:1.8;color:#DCE7F5}
.code .c{color:#93ADD3} .code .t{color:#A6C7EE} .code .s{color:#F2F6FB}

/* ---------- story ---------- */
.story{padding-block:clamp(48px,7vw,88px)}
.storyin{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center}
@media(max-width:860px){.storyin{grid-template-columns:1fr}}
.storyin img{border-radius:var(--r);aspect-ratio:16/11;object-fit:cover;width:100%}
.storytx h2{margin-bottom:14px}
.storytx p{font-size:17.5px;line-height:1.75;color:var(--text-2);margin:0 0 14px}

/* ---------- pricing / waitlist ---------- */
.price{padding-block:clamp(48px,7vw,88px)}
.pwrap{position:relative;border-radius:var(--r);overflow:hidden;min-height:520px;display:flex;align-items:center;background:#0B2A5B}
.pwrap img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:80% 50%}
.pwrap::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,42,91,.78) 0%,rgba(11,42,91,.45) 55%,rgba(11,42,91,.1) 100%)}
.pin{position:relative;z-index:2;max-width:620px;padding:clamp(28px,5vw,64px);color:#F3F6FA}
.pin .lbl{color:#B9D0EC;display:block;margin-bottom:16px}
.pin h2{color:#fff;margin-bottom:14px}
.pin p{font-size:18px;line-height:1.7;color:#DCE7F5;margin:0 0 28px}
.form{display:flex;gap:10px;flex-wrap:wrap}
.form input{flex:1 1 240px;min-width:0;font:inherit;font-size:17px;padding:14px 22px;border:1.5px solid rgba(255,255,255,.35);background:rgba(5,28,77,.55);color:#fff;border-radius:999px}
.form input::placeholder{color:#B9CDE8}
.form input:focus{outline:2px solid var(--sky);outline-offset:1px}
.okmsg{font-size:16px;color:#C9DDF5;margin-top:14px;display:none} .okmsg.on{display:block}
.contact{margin-top:18px;font-size:15px;color:#DCE7F5}
.contact a{color:#fff;font-weight:600;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5)}
.contact a:hover{border-bottom-color:#fff}
.trust{margin-top:24px;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:#C3D2E6}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding-block:48px 56px}
.fin{display:flex;gap:32px;flex-wrap:wrap;justify-content:space-between;align-items:flex-start}
.fin .lk{--fs:30px}
.fcols{display:flex;gap:clamp(28px,5vw,72px);flex-wrap:wrap}
.fcol{display:flex;flex-direction:column;gap:12px}
.fcol .lbl{font-size:12px;margin-bottom:4px}
.fcol a{font-size:16.5px;color:var(--text);text-decoration:none}
.fcol a:hover{color:var(--ink)}
.social{margin-top:36px;padding-top:24px;border-top:1px solid var(--line-2);display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.social .lbl{flex:none}
.slist{list-style:none;margin:0;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.slist a{display:inline-flex;align-items:center;gap:10px;padding:5px 16px 5px 5px;border:1.5px solid var(--line);border-radius:999px;text-decoration:none;color:var(--text);background:var(--surface);transition:border-color .15s,background .15s,color .15s;min-height:44px}
/* 官方平台图标：均来自各平台品牌资源文件（X 取自 about.x.com brand toolkit），不改形状不改颜色 */
.sico{width:36px;height:36px;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--ink)}
.sico img{width:22px;height:auto;object-fit:contain;display:block}
.sico img.yt{width:28px}
.sico img.xl{width:18px}
.slist a:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.slist a:hover .shandle{color:#C3D2E6}
.slist .sname{font-weight:600;font-size:15.5px}
.slist .shandle{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--text-3);letter-spacing:.02em}
@media(max-width:520px){.slist a .shandle{display:none}}
.fbot{margin-top:24px;padding-top:22px;border-top:1px solid var(--line-2);display:flex;gap:18px;justify-content:space-between;flex-wrap:wrap;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3)}
.note{font-size:13px;color:var(--text-3);margin:14px 0 0;text-align:center}

/* Release fixes: responsive navigation and document pages. */
[hidden]{display:none!important}section[id],main[id]{scroll-margin-top:116px}.nav-access{display:none}
.nav-toggle{display:none;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:24px;background:var(--surface);color:var(--text);cursor:pointer}
.document{padding-block:48px 72px;max-width:960px}.document h1{color:var(--text);font-size:clamp(32px,5vw,52px);line-height:1.2}.document h2{font-size:27px;line-height:1.3;margin-top:32px}.document p{color:var(--text-2)}.document a{color:var(--text)}.document .btn{color:white}.document .updated{font-size:14px;color:var(--text-3)}.access-card{border:1px solid var(--line);border-radius:20px;padding:0 28px 28px;margin:24px 0;background:var(--surface)}.access-card h2{margin-top:24px}
@media(max-width:1180px){.nav-toggle,.nav-access{display:block}.navin{position:relative;gap:12px}.ntools{margin-left:auto}.nlinks{display:none;position:absolute;top:100%;left:28px;right:28px;flex-direction:column;gap:6px;margin:0;padding:18px 24px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 14px 28px #0b2a5b22}.nlinks.is-open{display:flex}}
@media(max-width:480px){.w{padding-inline:18px}.navin .lk{--fs:26px}.navin{gap:8px}.ntools{gap:8px}.langbtn{padding:9px 10px;font-size:14px}.langbtn .lcode{display:none}.nav-toggle{font-size:14px;padding:9px 10px}.langmenu{min-width:170px}.nlinks{left:18px;right:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}