:root{
  --paper:#f3efe5;--paper-2:#eae3d5;--paper-3:#ddd3c1;--ink:#17221e;--ink-2:#263630;
  --muted:#68736c;--muted-2:#8e978f;--orange:#e7643a;--orange-dark:#bd4825;
  --sage:#5d7d70;--line:rgba(23,34,30,.14);--line-light:rgba(243,239,229,.18);
  --max:1440px;--gutter:clamp(20px,4vw,58px);
  --sans:"Avenir Next","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --serif:"Songti SC","STSong","Noto Serif SC",Georgia,serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.25;z-index:50;background-image:radial-gradient(rgba(23,34,30,.12) .6px,transparent .6px);background-size:5px 5px;mix-blend-mode:multiply}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit}
::selection{background:var(--orange);color:#fff7ed}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.skip{position:absolute;left:-9999px;top:10px;z-index:100;background:var(--ink);color:var(--paper);padding:10px 14px}
.skip:focus{left:12px}
.nav{position:sticky;top:0;z-index:30;background:rgba(243,239,229,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:border-color .25s,background .25s}
.nav.is-scrolled{border-bottom-color:var(--line);background:rgba(243,239,229,.96)}
.nav-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:var(--max);margin:auto;padding:0 var(--gutter)}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.13em;font-size:13px;line-height:1.15;white-space:nowrap}
.brand-mark{width:30px;height:30px;position:relative;display:grid;place-items:center;border:1.5px solid var(--ink);border-radius:50%}
.brand-mark::before,.brand-mark::after{content:"";position:absolute;background:var(--orange)}
.brand-mark::before{width:24px;height:1.5px;transform:rotate(-28deg)}
.brand-mark::after{width:5px;height:5px;border-radius:50%;box-shadow:0 0 0 2px var(--paper)}
.brand small{display:block;font-size:8px;color:var(--muted);letter-spacing:.19em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:28px;font-size:11px;font-weight:650;letter-spacing:.08em;color:var(--muted)}
.nav-links a{position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--orange);transition:right .22s}
.nav-links a:hover{color:var(--ink)}.nav-links a:hover::after{right:0}
.nav-cta{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--ink);padding:11px 15px;font-size:11px;font-weight:750;letter-spacing:.07em;transition:background .2s,color .2s}
.nav-cta .arrow{font-size:15px;line-height:1;transition:transform .2s}
.nav-cta:hover{background:var(--ink);color:var(--paper)}.nav-cta:hover .arrow{transform:translate(3px,-3px)}
.hero{padding-top:clamp(48px,7vw,96px);padding-bottom:clamp(70px,9vw,120px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(360px,.96fr);gap:clamp(34px,5vw,80px);align-items:center;min-height:min(760px,calc(100dvh - 130px))}
.eyebrow{display:flex;align-items:center;gap:14px;font-size:10px;font-weight:750;letter-spacing:.2em;color:var(--sage);margin-bottom:26px}
.eyebrow .pulse{width:34px;height:1px;background:var(--orange);position:relative}.eyebrow .pulse::after{content:"";position:absolute;right:0;top:-2px;width:5px;height:5px;border-radius:50%;background:var(--orange)}
h1{font-family:var(--serif);font-weight:800;font-size:clamp(48px,5.9vw,90px);line-height:1.04;letter-spacing:-.045em;margin:0 0 28px}
h1 em{font-style:normal;color:var(--orange);position:relative;display:inline-block}
h1 em::after{content:"";position:absolute;left:2%;right:2%;bottom:2px;height:7px;background:var(--paper-2);z-index:-1}
.hero-lead{max-width:610px;font-size:clamp(14px,1.2vw,17px);line-height:1.95;color:#4d5a53;margin:0 0 34px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 20px;border:1px solid transparent;font-size:12px;font-weight:750;letter-spacing:.06em;transition:transform .18s,background .18s,border-color .18s}
.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}
.btn-primary{background:var(--orange);color:#fff8ef;border-color:var(--orange);box-shadow:0 10px 30px rgba(189,72,37,.18)}
.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark)}
.btn-ghost{border-color:var(--ink);background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn .arrow{font-size:16px;line-height:1}
.hero-meta{display:flex;gap:26px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);max-width:590px}
.meta-item{display:flex;align-items:baseline;gap:8px}.meta-item strong{font-family:var(--serif);font-size:26px;letter-spacing:-.03em}.meta-item span{font-size:9px;letter-spacing:.13em;color:var(--muted);line-height:1.4}
.hero-visual{position:relative;min-height:600px;isolation:isolate}
.hero-visual::before{content:"1 : 87";position:absolute;right:-18px;top:-46px;font-size:clamp(64px,9vw,140px);font-weight:850;letter-spacing:-.08em;color:rgba(23,34,30,.055);z-index:-1;transform:rotate(90deg);transform-origin:right top}
.hero-card{position:absolute;display:block;background:#fff;border:1px solid rgba(23,34,30,.18);box-shadow:0 24px 70px rgba(40,48,42,.2);transition:transform .35s cubic-bezier(.2,.75,.25,1),box-shadow .35s;overflow:hidden}
.hero-card:hover{box-shadow:0 32px 86px rgba(40,48,42,.28)}
.hero-card-a{right:0;top:0;width:78%;transform:rotate(1.6deg);z-index:2}
.hero-card-a:hover{transform:rotate(.4deg) translateY(-5px)}
.hero-card-b{left:0;bottom:0;width:73%;transform:rotate(-2.3deg);z-index:3}
.hero-card-b:hover{transform:rotate(-1deg) translateY(-5px)}
.hero-card img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.hero-card .card-strip{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;gap:15px;background:#fff}
.card-version{display:flex;align-items:center;gap:10px}
.card-version b{font-family:var(--serif);font-size:15px}.card-version span{font:10px var(--sans);letter-spacing:.13em;color:var(--muted)}
.card-chip{font:750 9px var(--sans);letter-spacing:.12em;padding:5px 7px;border:1px solid rgba(23,34,30,.2);color:var(--muted)}
.hero-card-a .card-version b{color:var(--sage)}.hero-card-b .card-version b{color:var(--orange-dark)}
.hero-note{position:absolute;left:-2px;top:28px;font-size:9px;letter-spacing:.16em;color:var(--muted);writing-mode:vertical-rl;transform:rotate(180deg)}
.manifesto{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2)}
.manifesto-inner{display:grid;grid-template-columns:180px 1fr 1.1fr;gap:clamp(22px,4vw,64px);padding-top:55px;padding-bottom:55px;align-items:start}
.manifesto-label{font:750 10px var(--sans);letter-spacing:.18em;color:var(--orange-dark);padding-top:8px}
.manifesto h2{font-family:var(--serif);font-size:clamp(25px,2.6vw,40px);line-height:1.35;letter-spacing:-.02em;margin:0;font-weight:700}
.manifesto p{margin:0;color:#5b665f;font-size:13px;line-height:2}
.section{padding-top:clamp(74px,9vw,128px);padding-bottom:clamp(74px,9vw,128px)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:45px}
.section-kicker{font:750 10px var(--sans);letter-spacing:.2em;color:var(--orange-dark);margin:0 0 13px}
.section-head h2{font-family:var(--serif);font-size:clamp(35px,4.5vw,64px);line-height:1.08;letter-spacing:-.035em;margin:0;font-weight:750}
.section-head .aside{max-width:360px;font-size:12px;line-height:1.85;color:var(--muted);margin:0 0 5px;text-align:right}
.versions-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.version-card{border-top:3px solid var(--ink);display:flex;flex-direction:column;padding-top:20px}
.version-card.v2{border-top-color:var(--orange)}
.version-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.version-id{display:flex;align-items:center;gap:13px}.version-number{font-family:var(--serif);font-size:53px;line-height:.8;letter-spacing:-.06em;color:var(--ink);font-weight:800}
.v2 .version-number{color:var(--orange)}
.version-title small{display:block;font:700 9px var(--sans);letter-spacing:.16em;color:var(--muted);margin-bottom:5px}
.version-title h3{font-family:var(--serif);font-size:clamp(22px,2.4vw,31px);margin:0;letter-spacing:-.02em;line-height:1.1;font-weight:750}
.tags{display:flex;flex-wrap:wrap;gap:5px;justify-content:flex-end}
.tag{font:650 8px var(--sans);letter-spacing:.09em;border:1px solid var(--line);padding:5px 7px;color:#69736b;white-space:nowrap}
.version-figure{position:relative;overflow:hidden;border:1px solid rgba(23,34,30,.16);background:#1c2521}
.version-figure img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.version-card:hover .version-figure img{transform:scale(1.015)}
.figure-label{position:absolute;left:12px;bottom:12px;background:rgba(243,239,229,.91);padding:6px 8px;font:700 9px var(--sans);letter-spacing:.11em;color:var(--ink)}
.version-body{padding-top:20px;display:flex;flex-direction:column;flex:1}
.version-body p{margin:0 0 20px;color:#58645d;font-size:13px;line-height:1.9}
.feature-list{list-style:none;margin:0 0 26px;padding:0;border-top:1px solid var(--line)}
.feature-list li{display:grid;grid-template-columns:77px 1fr;gap:12px;border-bottom:1px solid var(--line);padding:11px 0;font-size:11px;line-height:1.55}
.feature-list span{color:var(--muted-2);letter-spacing:.08em;font-size:9px;padding-top:2px}.feature-list b{font-weight:600;color:#3a4941}
.version-actions{display:flex;align-items:center;gap:17px;margin-top:auto}
.version-link{font-size:11px;font-weight:750;letter-spacing:.06em;border-bottom:1px solid var(--ink);padding-bottom:3px}
.version-link:hover{color:var(--orange-dark);border-color:var(--orange-dark)}
.version-sub{font:650 9px var(--sans);letter-spacing:.1em;color:var(--muted)}
.compare-section{background:var(--ink);color:var(--paper);scroll-margin-top:80px}
.compare-section .section-kicker{color:#ef936e}.compare-section .section-head h2{color:var(--paper)}.compare-section .section-head .aside{color:#a6b1aa}
.table-wrap{overflow-x:auto;border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light);scrollbar-color:#63756b #26342e}
.compare-table{width:100%;min-width:850px;border-collapse:collapse;font-size:12px}
.compare-table th,.compare-table td{text-align:left;vertical-align:top;padding:18px 20px;border-bottom:1px solid var(--line-light)}
.compare-table thead th{font:700 9px var(--sans);letter-spacing:.16em;color:#9cad9f;padding-top:15px;padding-bottom:15px;background:#1b2923}
.compare-table thead th:nth-child(2){color:#cbd7cd}.compare-table thead th:nth-child(3){color:#f08e68}
.compare-table tbody td:first-child{width:145px;color:#819087;font:650 10px var(--sans);letter-spacing:.07em}
.compare-table tbody td:nth-child(2),.compare-table tbody td:nth-child(3){width:calc((100% - 145px)/2);line-height:1.75;color:#e5e9e2}
.compare-table tbody td:nth-child(3){color:#f2c7b5}
.compare-table tbody tr:hover{background:rgba(255,255,255,.025)}
.table-note{margin:16px 0 0;font-size:10px;line-height:1.8;color:#8b9b91;letter-spacing:.02em}
.cta-band{background:var(--orange);color:#fff8ef;padding:clamp(50px,7vw,88px) 0;position:relative;overflow:hidden}
.cta-band::after{content:"01 / 02";position:absolute;right:var(--gutter);bottom:-35px;font-family:var(--serif);font-weight:800;font-size:clamp(100px,17vw,235px);letter-spacing:-.08em;color:rgba(255,248,239,.1);pointer-events:none}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;z-index:1}
.cta-inner h2{font-family:var(--serif);font-weight:750;font-size:clamp(34px,4.8vw,68px);line-height:1.08;letter-spacing:-.04em;max-width:790px;margin:0}
.cta-inner p{margin:16px 0 0;max-width:510px;font-size:12px;line-height:1.9;color:rgba(255,248,239,.8)}
.cta-inner .btn{background:#fff8ef;color:var(--orange-dark);border-color:#fff8ef;flex:0 0 auto;min-width:190px}
.cta-inner .btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.site-footer{padding:35px 0 42px;border-top:1px solid var(--line)}
.footer-inner{display:flex;justify-content:space-between;gap:30px;align-items:center}
.footer-inner p{margin:0;font-size:10px;line-height:1.8;color:var(--muted)}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;font-size:10px;font-weight:650;letter-spacing:.05em}
.footer-links a:hover{color:var(--orange-dark)}
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.75,.25,1)}
[data-reveal].is-visible{opacity:1;transform:none}
@media(max-width:1100px){
  .hero-grid{grid-template-columns:1fr;min-height:auto;gap:54px;padding-bottom:20px}
  .hero-copy{max-width:780px}.hero-visual{min-height:530px;max-width:760px;width:100%;margin:auto}
  .manifesto-inner{grid-template-columns:130px 1fr}.manifesto p{grid-column:2}
}
@media(max-width:820px){
  .nav-links{display:none}.nav-inner{height:68px}
  .hero{padding-top:44px}.hero-visual{min-height:430px}
  .hero-card-a{width:84%}.hero-card-b{width:78%}
  .versions-grid{grid-template-columns:1fr;gap:56px}
  .section-head{display:block}.section-head .aside{text-align:left;margin-top:18px;max-width:100%}
  .manifesto-inner{grid-template-columns:1fr;gap:18px}.manifesto p{grid-column:auto}
  .cta-inner{display:block}.cta-inner .btn{margin-top:28px}
  .footer-inner{display:block}.footer-links{margin-top:16px}
  .hero-meta{gap:16px;flex-wrap:wrap}
}
@media(max-width:540px){
  .brand{font-size:11px}.brand small{display:none}.brand-mark{width:26px;height:26px}
  .nav-cta{padding:9px 10px;font-size:10px}
  h1{font-size:clamp(42px,12vw,58px)}
  .hero{padding-bottom:56px}.hero-meta{margin-top:30px}.meta-item strong{font-size:22px}
  .hero-visual{min-height:355px}.hero-note{display:none}
  .hero-card .card-strip{padding:8px 9px}.card-version b{font-size:12px}.card-version span{font-size:7px}.card-chip{font-size:7px;padding:3px 4px}
  .version-top{display:block}.tags{justify-content:flex-start;margin-top:13px}
  .version-number{font-size:44px}.feature-list li{grid-template-columns:67px 1fr;font-size:10px}
  .compare-table th,.compare-table td{padding:14px 12px}
  .table-wrap{margin-left:calc(var(--gutter)*-1);margin-right:calc(var(--gutter)*-1);padding-left:var(--gutter);padding-right:var(--gutter)}
  .cta-band::after{font-size:115px;bottom:-18px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ---------- Full-screen comparison viewer ---------- */
.compare-page{height:100dvh;overflow:hidden;background:#1a2520;color:var(--paper);display:flex;flex-direction:column}
.compare-page::before{display:none}
.compare-nav{position:relative;flex:0 0 64px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 18px;background:#f3efe5;color:var(--ink);border-bottom:1px solid rgba(23,34,30,.15);z-index:4}
.compare-brand{display:flex;align-items:center;gap:10px;min-width:185px}
.compare-brand .brand-mark{width:28px;height:28px;flex:0 0 28px}
.compare-brand-copy{display:block;min-width:0}
.compare-brand-copy strong{font-size:11px;letter-spacing:.12em;line-height:1.15;display:block}.compare-brand-copy span{display:block;font:700 8px var(--sans);color:var(--muted);letter-spacing:.1em;margin-top:3px}
.mode-switch{display:flex;align-items:center;border:1px solid rgba(23,34,30,.24);padding:3px;gap:2px;background:#e9e3d7}
.mode-switch button{appearance:none;border:0;background:transparent;min-height:31px;padding:0 13px;font-size:10px;font-weight:700;letter-spacing:.06em;color:#5c675f;cursor:pointer;transition:background .18s,color .18s}
.mode-switch button:hover{background:rgba(255,255,255,.5);color:var(--ink)}
.mode-switch button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.mode-switch button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.compare-actions{display:flex;align-items:center;justify-content:flex-end;gap:16px;min-width:185px}
.compare-tip{font-size:8px;letter-spacing:.04em;color:var(--muted);line-height:1.5;max-width:190px;text-align:right}
.back-link{font-size:10px;font-weight:700;letter-spacing:.05em;border-bottom:1px solid var(--ink);padding-bottom:2px;white-space:nowrap}
.back-link:hover{color:var(--orange-dark);border-color:var(--orange-dark)}
.compare-stage{min-height:0;flex:1;display:grid;gap:1px;background:#2b3932;overflow:hidden}
.compare-stage.mode-split{grid-template-columns:1fr 1fr}
.compare-stage.mode-a,.compare-stage.mode-b{grid-template-columns:1fr}
.compare-stage.mode-a .pane-b,.compare-stage.mode-b .pane-a{display:none}
.compare-pane{min-width:0;min-height:0;display:flex;flex-direction:column;background:#101814;position:relative}
.pane-head{flex:0 0 43px;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:0 14px;background:#f3efe5;color:var(--ink);border-bottom:1px solid rgba(23,34,30,.15)}
.pane-id{display:flex;align-items:center;gap:9px;min-width:0}
.pane-num{font-family:var(--serif);font-size:24px;font-weight:800;line-height:1;letter-spacing:-.06em;color:var(--sage)}
.pane-b .pane-num{color:var(--orange)}
.pane-title{display:flex;flex-direction:column;gap:2px;min-width:0}.pane-title strong{font-size:11px;letter-spacing:.03em;white-space:nowrap}.pane-title span{font:700 7px var(--sans);letter-spacing:.12em;color:var(--muted);white-space:nowrap}
.pane-open{font-size:9px;font-weight:700;color:var(--muted);white-space:nowrap;padding:6px 8px;border:1px solid rgba(23,34,30,.18);transition:background .18s,color .18s}
.pane-open:hover{background:var(--ink);color:var(--paper)}
.frame-wrap{position:relative;min-height:0;flex:1;background:#111a16;overflow:hidden}
.frame-wrap iframe{position:absolute;inset:0;display:block;width:100%;height:100%;border:0;background:#111a16}
.frame-loading{position:absolute;inset:0;display:grid;place-items:center;background:#141f1a;color:#cbd4cd;z-index:2;transition:opacity .4s;pointer-events:none}
.frame-loading.is-hidden{opacity:0}
.load-inner{display:flex;flex-direction:column;align-items:center;gap:13px}.load-track{display:flex;gap:4px}.load-track i{width:10px;height:10px;background:var(--sage);animation:loadHop 1.1s infinite ease-in-out}.load-track i:nth-child(2){background:#e4a35d;animation-delay:.13s}.load-track i:nth-child(3){background:var(--orange);animation-delay:.26s}
.frame-loading p{margin:0;font-size:9px;letter-spacing:.16em;color:#96a59b}
@keyframes loadHop{0%,70%,100%{transform:translateY(0)}35%{transform:translateY(-7px)}}
@media(max-width:1100px){
  .compare-nav{flex-wrap:wrap;height:auto;min-height:104px;padding:9px 12px 42px;gap:8px;align-items:flex-start}
  .compare-brand{min-width:150px}.compare-actions{min-width:auto;padding-top:3px}.compare-tip{display:none}
  .mode-switch{position:absolute;left:10px;right:10px;bottom:5px;width:auto;order:3;justify-content:center}.mode-switch button{flex:1;max-width:170px}
  .compare-stage.mode-split{grid-template-columns:1fr;grid-template-rows:1fr 1fr}
  .pane-head{flex-basis:38px}.pane-num{font-size:20px}.pane-title span{display:none}
}
@media(max-width:540px){
  .compare-nav{min-height:98px;flex-wrap:nowrap;padding:8px 10px 41px}.compare-brand-copy span{display:none}
  .compare-brand-copy strong{font-size:10px}.back-link{font-size:9px}.compare-actions{gap:8px}
  .mode-switch{position:absolute;left:10px;right:10px;bottom:5px;width:auto}
  .mode-switch button{min-height:28px;font-size:9px;padding:0 7px}
  .pane-title strong{font-size:10px}.pane-open{font-size:8px}
}