@font-face{font-family:"Plex";src:url("/assets/fonts/IBMPlexSans-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex";src:url("/assets/fonts/IBMPlexSans-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex";src:url("/assets/fonts/IBMPlexSans-SemiBold.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex";src:url("/assets/fonts/IBMPlexSans-Bold.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --ink:#1B2A3A; --ink-2:#24384D; --seal:#B3261E; --seal-dk:#951F18; --paper:#EEF1F4; --sheet:#fff;
  --rule:#D3DAE1; --muted:#5B6773; --blush:#F2A89E; --mist:#C9D3DD;
  --font:"Plex","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--sheet);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
:focus-visible{outline:3px solid var(--seal);outline-offset:3px;border-radius:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:20}
.skip:focus{left:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:6px;font-weight:600;font-size:16px;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;line-height:1.2;transition:background-color .15s,border-color .15s,color .15s}
.btn-seal{background:var(--seal);color:#fff}
.btn-seal:hover{background:var(--seal-dk)}
.btn-ink{background:var(--ink);color:#fff;padding:9px 16px;font-size:15px}
.btn-ink:hover{background:var(--ink-2)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:#fff}

/* header */
.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--rule)}
.top-in{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;text-decoration:none;letter-spacing:-.01em}
.brand img{transform:rotate(-4deg)}
.top nav{margin-left:auto;display:flex;align-items:center;gap:26px}
.top nav a:not(.btn){text-decoration:none;font-size:15px;color:var(--muted);font-weight:500}
.top nav a:not(.btn):hover{color:var(--ink)}

/* hero */
.hero{background:var(--paper);overflow:hidden;border-bottom:1px solid var(--rule)}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;min-height:620px;padding-top:56px;padding-bottom:56px}
.hero h1{font-size:clamp(38px,5vw,60px);line-height:1.04;letter-spacing:-.025em;margin:0;font-weight:700;max-width:14ch}
.lede{font-size:20px;color:#3A4652;margin:22px 0 30px;max-width:34em}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.facts{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-wrap:wrap;gap:10px 26px;font-size:15px;color:var(--muted)}
.facts li{display:flex;align-items:center;gap:8px}
.facts li:before{content:"";width:8px;height:8px;background:var(--seal);border-radius:1px;transform:rotate(45deg)}
.hero-art{position:relative;height:520px}
.doc{position:absolute;box-shadow:0 30px 70px rgba(27,42,58,.22);border-radius:6px;background:#fff}
.doc-a{width:78%;left:4%;top:0;transform:rotate(-3deg)}
.doc-b{width:48%;right:0;top:120px;height:380px;overflow:hidden;transform:rotate(3deg);border:1px solid var(--rule)}
.doc-b img{width:100%}
.stamp{position:absolute;width:118px;height:118px;left:40%;top:330px;transform:rotate(-12deg);filter:drop-shadow(0 8px 16px rgba(179,38,30,.35));animation:stamp .55s cubic-bezier(.2,1.6,.4,1) .35s both}
@keyframes stamp{from{opacity:0;transform:rotate(-12deg) scale(1.9)}to{opacity:1;transform:rotate(-12deg) scale(1)}}

/* tools */
.tools{padding:96px 0 0}
.family{max-width:720px;margin:0 0 48px}
.family-2{margin-top:120px}
.family h2{font-size:clamp(30px,3.4vw,42px);letter-spacing:-.02em;line-height:1.1;margin:0 0 12px}
.family p{color:var(--muted);font-size:18px;margin:0}
.tool{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:center;margin-bottom:88px}
.tool.flip .tool-img{order:2}
.tool-img{border:1px solid var(--rule);border-radius:8px;overflow:hidden;box-shadow:0 18px 40px rgba(27,42,58,.10);background:var(--paper)}
.tool h3{font-size:26px;letter-spacing:-.015em;line-height:1.2;margin:0 0 12px}
.tool p{margin:0 0 16px;color:#3A4652}
.ticks{list-style:none;padding:0;margin:0 0 24px}
.ticks li{position:relative;padding-left:26px;margin:7px 0;font-size:16px}
.ticks li:before{content:"";position:absolute;left:2px;top:9px;width:12px;height:7px;border-left:2.5px solid var(--seal);border-bottom:2.5px solid var(--seal);transform:rotate(-45deg)}

.bundle{background:var(--ink);color:#fff;margin-top:8px}
.bundle-in{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:44px;padding-bottom:44px}
.bundle h3{font-size:28px;margin:0 0 6px;letter-spacing:-.015em}
.bundle p{margin:0;color:var(--mist);max-width:40em}

/* guide */
.guide{background:var(--paper);padding:100px 0}
.guide-in{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:center}
.guide-art{position:relative;height:430px}
.guide-art img{position:absolute;width:62%;border-radius:4px;box-shadow:0 22px 50px rgba(27,42,58,.22)}
.g1{right:4%;top:28px;transform:rotate(5deg)}
.g2{left:4%;top:0;transform:rotate(-4deg)}
.guide h2{font-size:clamp(28px,3vw,38px);letter-spacing:-.02em;line-height:1.12;margin:0 0 14px}
.guide-copy>p{color:#3A4652;margin:0 0 26px;max-width:36em}
.signup label[for=email]{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.signup-row{display:flex;gap:10px;flex-wrap:wrap}
.signup input[type=email]{flex:1;min-width:220px;padding:12px 14px;font:inherit;font-size:16px;border:2px solid var(--rule);border-radius:6px;background:#fff}
.signup input[type=email]:focus{border-color:var(--ink);outline:none}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#3A4652;margin-top:14px;cursor:pointer}
.consent input{margin-top:4px;width:17px;height:17px;accent-color:var(--seal);flex:none}
.fine{font-size:13px;color:var(--muted);margin:10px 0 0}

/* about */
.about{padding:110px 0}
.about-in{display:grid;grid-template-columns:.7fr 1.3fr;gap:64px;align-items:start}
.glyph{font-size:clamp(160px,20vw,280px);line-height:.9;color:var(--seal);font-weight:600;text-align:center;font-family:"Noto Serif SC","Songti SC","SimSun",serif}
.about h2{font-size:clamp(28px,3vw,38px);letter-spacing:-.02em;margin:0 0 16px}
.about p{margin:0 0 16px;color:#3A4652;max-width:40em}

/* footer */
.foot{border-top:1px solid var(--rule);padding:34px 0}
.foot-in{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.brand-foot{font-size:17px}
.foot nav{display:flex;gap:24px;flex-wrap:wrap}
.foot nav a{color:var(--muted);text-decoration:none;font-size:15px}
.foot nav a:hover{color:var(--ink);text-decoration:underline}
.copy{margin:0 0 0 auto;color:var(--muted);font-size:14px}

/* privacy page */
.doc-page{max-width:760px;margin:0 auto;padding:64px 28px 96px}
.doc-page h1{font-size:40px;letter-spacing:-.02em;margin:0 0 8px}
.doc-page h2{font-size:21px;margin:34px 0 8px}
.doc-page p,.doc-page li{color:#3A4652}

@media (max-width:960px){
  .hero-in{grid-template-columns:1fr;min-height:0;padding-top:44px}
  .hero-art{height:380px;max-width:520px}
  .tool,.guide-in,.about-in{grid-template-columns:1fr;gap:28px}
  .tool.flip .tool-img{order:0}
  .tool{margin-bottom:64px}
  .guide-art{height:340px;max-width:420px}
  .glyph{text-align:left;font-size:160px}
  .bundle-in{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  body{font-size:16px}
  .top nav a:not(.btn){display:none}
  .btn-ink{padding:8px 12px;font-size:14px}
  .lede{font-size:18px}
  .hero-art{height:300px}
  .stamp{width:84px;height:84px;top:220px}
  .doc-b{top:80px;height:240px}
  .copy{margin-left:0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.stamp{animation:none}.btn{transition:none}}