/* ============================================================
   WU本子 · 落地页
   视觉基线参照 wuku.p8.ink（深墨 / 米白 / 薄荷绿 / 宋体标题）
   ============================================================ */

@font-face{font-family:"Songti SC";src:local("Songti SC"),local("Noto Serif CJK SC"),local("Source Han Serif SC")}
@font-face{font-family:"PingFang SC";src:local("PingFang SC"),local("Noto Sans CJK SC"),local("Source Han Sans SC")}
@font-face{font-family:"DejaVu Sans Mono";src:local("DejaVu Sans Mono"),local("Menlo"),local("SFMono-Regular")}

:root{
  --ink:#060807;
  --ink-2:#0a0d0c;
  --ink-3:#101413;
  --cream:#f2efe7;
  --cream-2:rgba(242,239,231,.66);
  --cream-3:rgba(242,239,231,.40);
  --mint:#93c9b7;
  --mint-2:#6fae9e;
  --sage:#2f5148;
  --warm:#c69a6d;
  --rose:#d98b8b;
  --line:rgba(242,239,231,.10);
  --line-2:rgba(242,239,231,.055);
  --serif:"Songti SC","Noto Serif CJK SC","Songti TC",STSong,SimSun,serif;
  --sans:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",-apple-system,system-ui,sans-serif;
  --mono:"DejaVu Sans Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.16,.84,.28,1);
  --pad:clamp(20px,6vw,112px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--ink);color:var(--cream);
  font-family:var(--sans);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--mint);color:#08110e}
:focus-visible{outline:1px solid var(--mint);outline-offset:3px;border-radius:4px}

/* 颗粒 */
.grain{
  position:fixed;inset:0;z-index:90;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 通用工具类 */
.wrap{width:100%;max-width:1440px;margin:0 auto;padding:0 var(--pad)}
.mono{font-family:var(--mono);font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--cream-3)}
.display{font-family:var(--serif);font-weight:600;letter-spacing:-.02em;line-height:1.02}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 顶部进度条 */
.progress{position:fixed;top:0;left:0;right:0;height:1px;z-index:120;background:transparent}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--sage),var(--mint));opacity:.85}

/* ============================================================
   1 · 载入
   ============================================================ */
.loader{
  position:fixed;inset:0;z-index:200;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transition:transform 1.05s var(--ease),opacity .6s ease;
}
.loader.done{transform:translateY(-101%)}
.loader__in{width:min(320px,62vw);text-align:center;transition:opacity .4s ease}
.loader.done .loader__in{opacity:0}
.loader__mark{width:52px;height:52px;margin:0 auto 22px;opacity:.9;animation:breathe 2.4s ease-in-out infinite}
.loader__name{font-family:var(--serif);font-size:19px;letter-spacing:.34em;color:var(--cream-2)}
.loader__bar{margin-top:26px;height:1px;background:var(--line);position:relative;overflow:hidden}
.loader__bar i{position:absolute;inset:0;transform-origin:left;transform:scaleX(0);background:var(--mint);transition:transform .3s linear}
.loader__num{margin-top:14px;font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--cream-3)}
@keyframes breathe{0%,100%{opacity:.55;transform:scale(.97)}50%{opacity:1;transform:scale(1.03)}}

/* ============================================================
   2 · 导航
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:130;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);height:74px;
  border-bottom:1px solid transparent;
  transition:background .5s ease,border-color .5s ease,height .5s ease;
}
.nav.stuck{
  background:rgba(6,8,7,.72);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line-2);height:62px;
}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:26px;height:26px;border-radius:8px}
.brand b{font-family:var(--serif);font-size:17px;font-weight:600;letter-spacing:.14em}
.brand s{text-decoration:none;font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--cream-3);margin-left:2px}
.nav__links{display:flex;gap:clamp(18px,2.6vw,42px)}
.nav__links a{position:relative;font-size:13px;letter-spacing:.14em;color:var(--cream-2);transition:color .3s ease}
.nav__links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--mint);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.nav__links a:hover{color:var(--cream)}
.nav__links a:hover::after{transform:scaleX(1)}
.nav__cta{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 18px;border:1px solid var(--line);border-radius:100px;
  font-size:12px;letter-spacing:.14em;color:var(--cream);
  transition:border-color .4s ease,background .4s ease,transform .4s var(--ease);
}
.nav__cta:hover{border-color:rgba(147,201,183,.6);background:rgba(147,201,183,.07);transform:translateY(-1px)}
.nav__cta i{width:5px;height:5px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint)}

/* ============================================================
   3 · Hero
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:110px 0 70px}
.hero__bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero__bg::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse 900px 620px at 74% 42%,rgba(47,81,72,.34) 0%,rgba(12,18,16,.10) 48%,transparent 72%),
    radial-gradient(ellipse 1400px 520px at 50% -6%,rgba(120,150,138,.16) 0%,transparent 66%),
    radial-gradient(ellipse 700px 500px at 8% 96%,rgba(198,154,109,.06) 0%,transparent 70%);
}
.hero__grid-lines{position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:calc(100% / 6) 100%;
  mask-image:linear-gradient(180deg,transparent,#000 22%,#000 74%,transparent);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 22%,#000 74%,transparent);
  opacity:.55;pointer-events:none}

.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:clamp(30px,4vw,60px)}

.eyebrow{display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.3em;color:var(--cream-3);text-transform:uppercase}
.eyebrow .dot{width:5px;height:5px;border-radius:50%;background:var(--mint);box-shadow:0 0 12px var(--mint);flex:none}

.hero h1{margin:26px 0 0;font-size:clamp(46px,6.6vw,104px)}
.hero h1 .l1{display:block;letter-spacing:.06em;line-height:1.02}
.hero h1 .l2{display:block;margin-top:.1em;font-size:.62em;font-weight:400;letter-spacing:.02em;color:var(--cream)}
.hero h1 em{font-style:normal;color:var(--mint);font-weight:600;letter-spacing:-.01em}
.hero .lead{margin-top:30px;max-width:34em;font-size:clamp(14px,1.35vw,16.5px);line-height:1.95;color:var(--cream-2)}
.hero .lead b{color:var(--cream);font-weight:500}

.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:42px}
.btn{
  position:relative;display:inline-flex;align-items:center;gap:14px;
  padding:16px 26px;border-radius:100px;font-size:13.5px;letter-spacing:.1em;
  transition:transform .5s var(--ease),background .45s ease,border-color .45s ease,box-shadow .45s ease;
  will-change:transform;
}
.btn small{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;opacity:.62;text-transform:uppercase}
.btn--solid{background:var(--cream);color:#08100d;box-shadow:0 10px 40px -14px rgba(242,239,231,.5)}
.btn--solid:hover{background:#fff;box-shadow:0 16px 50px -14px rgba(147,201,183,.7)}
.btn--ghost{border:1px solid var(--line);color:var(--cream-2)}
.btn--ghost:hover{border-color:rgba(147,201,183,.4);color:var(--cream);background:rgba(147,201,183,.05)}

/* 首屏下载按钮（根据设备自动指向对应安装包） */
.cta-dl{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:16px}
.btn--dl{
  background:var(--mint);color:#07110d;border:1px solid transparent;padding:16px 28px;
  box-shadow:0 14px 46px -20px rgba(147,201,183,.75),0 0 0 1px rgba(147,201,183,.18);
}
.btn--dl:hover{background:#a8d9c7;
  box-shadow:0 22px 60px -22px rgba(147,201,183,.95),0 0 0 1px rgba(147,201,183,.34)}
.btn--dl small{opacity:.64;color:#07110d}
.btn-dl__ic{width:15px;height:15px;flex:0 0 auto;fill:none;stroke:currentColor;
  stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.cta-dl__hint{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cream-3);transition:color .3s ease}
.cta-dl__hint.is-ready{color:var(--mint)}

.hero-meta{display:flex;gap:clamp(20px,3vw,46px);margin-top:52px;padding-top:24px;border-top:1px solid var(--line-2);list-style:none}
.hero-meta li b{display:block;font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--cream);font-weight:400}
.hero-meta li span{display:block;margin-top:6px;font-size:10.5px;letter-spacing:.2em;color:var(--cream-3)}

/* 舞台 */
.hero__stage{position:relative;display:flex;align-items:center;justify-content:center;min-height:clamp(420px,52vw,620px);perspective:1200px}
.stage-glow{position:absolute;width:min(560px,86%);aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(111,174,158,.22) 0%,rgba(47,81,72,.12) 40%,transparent 68%);
  filter:blur(28px);z-index:0}
.stage-glow::after{content:"";position:absolute;inset:-14%;border-radius:50%;
  background:conic-gradient(from 0deg,rgba(147,201,183,0) 0deg,rgba(147,201,183,.30) 58deg,rgba(198,154,109,.10) 118deg,rgba(147,201,183,0) 200deg);
  filter:blur(26px);opacity:.55;animation:spin 30s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.orbits{position:absolute;width:min(620px,96%);aspect-ratio:1;z-index:0;opacity:.7}
.orbits circle{fill:none;stroke:rgba(242,239,231,.10);stroke-width:1}
.orbits .ring2{stroke-dasharray:2 8;stroke:rgba(147,201,183,.30)}
.tilt{position:relative;z-index:2;transform-style:preserve-3d;
  transform:rotateY(calc(var(--ry,0) * 1deg)) rotateX(calc(var(--rx,0) * 1deg)) rotateZ(-1.2deg);
  transition:transform .9s var(--ease)}

/* 设备 */
.device{position:relative;width:var(--dw,300px);aspect-ratio:390/844;border-radius:calc(var(--dw) * .135);
  filter:drop-shadow(0 44px 60px rgba(0,0,0,.62))}
.device .screen{position:absolute;inset:0;border-radius:inherit;overflow:hidden;background:#f4f2ee}
.device .screen img{width:100%;height:100%;object-fit:cover}
.device .bezel{position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:
    inset 0 0 0 calc(var(--dw) * .0285) #0b100f,
    inset 0 0 0 calc(var(--dw) * .0310) rgba(255,255,255,.13),
    inset 0 0 0 1px rgba(255,255,255,.05),
    inset 0 -1px 0 rgba(255,255,255,.05);
}
.device .bezel::after{content:"";position:absolute;left:50%;transform:translateX(-50%);top:calc(var(--dw)*.043);
  width:25%;height:calc(var(--dw)*.018);border-radius:99px;background:#0b100f}
.device .gloss{position:absolute;inset:0;border-radius:inherit;pointer-events:none;mix-blend-mode:screen;
  background:linear-gradient(126deg,rgba(255,255,255,.15) 0%,rgba(255,255,255,.03) 21%,transparent 40%)}

.float-tag{
  position:absolute;z-index:3;font-family:var(--mono);font-size:9.5px;letter-spacing:.28em;
  padding:7px 13px;border:1px solid var(--line);border-radius:100px;color:var(--cream-3);
  background:rgba(8,12,11,.55);backdrop-filter:blur(8px);text-transform:uppercase;
  animation:floaty 6s ease-in-out infinite;
}
.float-tag.t-a{top:11%;left:0}
.float-tag.t-b{top:47%;right:-1%;animation-delay:-2s}
.float-tag.t-c{bottom:12%;left:4%;animation-delay:-4s}
.float-tag b{color:var(--mint);font-weight:400}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

.scroll-hint{position:absolute;left:var(--pad);bottom:26px;z-index:3;display:flex;align-items:center;gap:10px}
.scroll-hint span{font-family:var(--mono);font-size:9px;letter-spacing:.32em;color:var(--cream-3)}
.scroll-hint i{display:block;width:1px;height:34px;background:linear-gradient(180deg,var(--mint),transparent);animation:drop 2.4s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   4 · 跑马灯
   ============================================================ */
.marquee{position:relative;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);overflow:hidden;padding:20px 0;background:rgba(10,13,12,.6)}
.marquee__track{display:flex;width:max-content;animation:slide 42s linear infinite}
.marquee__track span{display:inline-flex;align-items:center;gap:26px;padding-right:26px;
  font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--cream-3);text-transform:uppercase;white-space:nowrap}
.marquee__track b{color:var(--mint);font-weight:400}
.marquee__track em{width:4px;height:4px;border-radius:50%;background:var(--sage);font-style:normal}
@keyframes slide{to{transform:translateX(-50%)}}

/* ============================================================
   5 · 章节通用
   ============================================================ */
section{position:relative}
.sec{padding:clamp(80px,10vw,150px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;padding-bottom:26px;border-bottom:1px solid var(--line-2);margin-bottom:clamp(44px,6vw,84px)}
.sec-head .idx{font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--mint);text-transform:uppercase}
.sec-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(26px,3.4vw,44px);letter-spacing:.02em;margin-top:16px}
.sec-head p{max-width:26em;font-size:13.5px;line-height:1.9;color:var(--cream-3);text-align:right}

/* ============================================================
   6 · 宣言
   ============================================================ */
.manifesto{padding:clamp(90px,13vw,180px) 0;border-bottom:1px solid var(--line-2)}
.manifesto__in{max-width:1180px}
.manifesto .line{display:block;font-family:var(--serif);font-weight:500;
  font-size:clamp(30px,5.2vw,76px);line-height:1.28;letter-spacing:.01em;
  color:rgba(242,239,231,.13);transition:color .8s var(--ease)}
.manifesto .line.on{color:var(--cream)}
.manifesto .line.on .hl{color:var(--mint)}
.manifesto .line .hl{transition:color .8s var(--ease)}
.manifesto p{margin-top:clamp(40px,5vw,72px);max-width:38em;font-size:15px;line-height:2.05;color:var(--cream-2)}
.manifesto p b{color:var(--cream);font-weight:500}

/* ============================================================
   7 · 三张截图
   ============================================================ */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,44px);align-items:start}
.shot{position:relative}
.shot:nth-child(2){margin-top:clamp(30px,5vw,72px)}
.shot:nth-child(3){margin-top:calc(clamp(30px,5vw,72px) * .42)}
.shot .stage{position:relative;display:flex;justify-content:center;padding:clamp(22px,2.6vw,34px) 0;
  background:radial-gradient(ellipse 62% 46% at 50% 44%,rgba(47,81,72,.30),rgba(47,81,72,.06) 58%,transparent 76%);
  transition:transform .8s var(--ease),background .8s ease}
.shot:hover .stage{transform:translateY(-10px);
  background:radial-gradient(ellipse 66% 48% at 50% 44%,rgba(60,102,90,.42),rgba(47,81,72,.08) 58%,transparent 78%)}
.shot .device{transform:rotateY(calc(var(--ry,0) * 1deg)) rotateX(calc(var(--rx,0) * 1deg));transition:transform .7s var(--ease)}
.shot figcaption{display:block;margin-top:20px;padding-top:16px;border-top:1px solid var(--line-2)}
.shot figcaption .cap-top{display:flex;align-items:baseline;gap:12px}
.shot figcaption .idx{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--mint)}
.shot figcaption h3{font-family:var(--serif);font-size:16px;font-weight:600;letter-spacing:.06em}
.shot figcaption p{display:block;margin-top:8px;font-size:12.5px;line-height:1.8;color:var(--cream-3)}

/* ============================================================
   8 · 影片框
   ============================================================ */
.cinema{padding:clamp(70px,8vw,120px) 0;border-bottom:1px solid var(--line-2)}
.frame{position:relative;border:1px solid var(--line);background:#0a0d0c;overflow:hidden;
  box-shadow:0 60px 120px -60px rgba(0,0,0,.9)}
.frame .corner{position:absolute;width:14px;height:14px;border:1px solid rgba(147,201,183,.55);pointer-events:none;z-index:3}
.frame .corner.tl{top:14px;left:14px;border-right:0;border-bottom:0}
.frame .corner.tr{top:14px;right:14px;border-left:0;border-bottom:0}
.frame .corner.bl{bottom:14px;left:14px;border-right:0;border-top:0}
.frame .corner.br{bottom:14px;right:14px;border-left:0;border-top:0}
.frame__bar{position:absolute;left:0;right:0;bottom:0;z-index:4;display:flex;justify-content:space-between;align-items:center;
  padding:16px 22px;background:linear-gradient(0deg,rgba(6,8,7,.85),transparent);
  font-family:var(--mono);font-size:9.5px;letter-spacing:.24em;color:var(--cream-3);text-transform:uppercase}
.frame__bar .live{display:inline-flex;align-items:center;gap:8px}
.frame__bar .live i{width:5px;height:5px;border-radius:50%;background:var(--mint);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.3}50%{opacity:1}}
.frame .prog{position:absolute;left:0;bottom:0;height:1px;width:100%;z-index:4;background:linear-gradient(90deg,var(--mint),rgba(147,201,183,.25));
  transform:scaleX(0);transform-origin:left;animation:progx 6s linear infinite}
@keyframes progx{to{transform:scaleX(1)}}

.reel{position:relative;aspect-ratio:16/9;overflow:hidden;
  background:
    radial-gradient(ellipse 55% 60% at 28% 48%,rgba(47,81,72,.34),transparent 72%),
    radial-gradient(ellipse 45% 50% at 78% 30%,rgba(111,174,158,.14),transparent 74%),
    #080b0a}
.reel::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:calc(100% / 8) 100%;opacity:.55;
  mask-image:linear-gradient(180deg,transparent,#000 30%,#000 80%,transparent);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 30%,#000 80%,transparent)}
.reel__copy{position:absolute;left:clamp(28px,6vw,86px);top:50%;transform:translateY(-50%);z-index:3;max-width:52%}
.reel__copy .mono{font-size:9.5px;color:rgba(147,201,183,.6)}
.reel__copy h3{margin-top:16px;font-family:var(--serif);font-size:clamp(24px,3.2vw,50px);font-weight:600;line-height:1.2;letter-spacing:.02em}
.reel__copy h3 em{font-style:normal;color:var(--mint)}
.reel__copy p{margin-top:14px;font-family:var(--mono);font-size:9.5px;letter-spacing:.24em;color:var(--cream-3);text-transform:uppercase}
.reel__rings{position:absolute;left:74%;top:50%;width:min(520px,58%);aspect-ratio:1;transform:translate(-50%,-50%);z-index:1}
.reel__rings i{position:absolute;inset:0;border:1px solid rgba(242,239,231,.1);border-radius:50%}
.reel__rings i:nth-child(2){inset:12%;border-style:dashed;border-color:rgba(147,201,183,.3);animation:spin 40s linear infinite}
.reel__rings i:nth-child(3){inset:25%;border-color:rgba(242,239,231,.07)}
.reel__device{position:absolute;right:clamp(24px,7vw,110px);top:50%;transform:translateY(-50%);z-index:2;
  width:clamp(140px,17vw,220px);filter:drop-shadow(0 40px 60px rgba(0,0,0,.8));animation:reelFloat 7s ease-in-out infinite}
@keyframes reelFloat{0%,100%{transform:translateY(-50%) rotate(-4deg)}50%{transform:translateY(calc(-50% - 12px)) rotate(-2deg)}}
.reel__chips{position:absolute;inset:0;z-index:2;pointer-events:none}
.reel__chips span{position:absolute;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:100px;
  border:1px solid rgba(242,239,231,.12);background:rgba(8,12,11,.6);backdrop-filter:blur(8px);
  font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--cream-3);text-transform:uppercase;
  animation:floaty 7s ease-in-out infinite}
.reel__chips span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--mint)}
.reel__chips span:nth-child(1){left:7%;bottom:16%}
.reel__chips span:nth-child(2){left:44%;top:14%;animation-delay:-2.4s}
.reel__chips span:nth-child(3){right:12%;top:18%;animation-delay:-4s}
.reel__chips span:nth-child(4){right:6%;bottom:20%;animation-delay:-3s}

/* ============================================================
   9 · 特性
   ============================================================ */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-2);border:1px solid var(--line-2)}
.card{position:relative;background:var(--ink-2);padding:clamp(26px,3vw,42px);overflow:hidden;transition:background .6s ease}
.card:hover{background:var(--ink-3)}
.card::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .6s ease;
  background:radial-gradient(420px 300px at var(--mx,50%) var(--my,0%),rgba(147,201,183,.10),transparent 70%)}
.card:hover::after{opacity:1}
.card .num{position:relative;z-index:2;font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--cream-3)}
.card h3{position:relative;z-index:2;margin-top:26px;font-family:var(--serif);font-size:clamp(19px,1.8vw,25px);font-weight:600;letter-spacing:.04em}
.card p{position:relative;z-index:2;margin-top:14px;font-size:13px;line-height:1.95;color:var(--cream-2)}
.card p b{color:var(--cream);font-weight:500}
.card .big{position:relative;z-index:2;font-family:var(--serif);font-size:clamp(46px,6vw,84px);font-weight:600;line-height:1;color:var(--mint);letter-spacing:-.03em}
.card .big small{font-size:.3em;letter-spacing:.1em;color:var(--cream-3);font-weight:400;margin-left:.36em}
.card--wide{grid-column:span 2}
.card--rank{display:flex;flex-direction:column;justify-content:space-between;min-height:210px}

/* ============================================================
   10 · 数字
   ============================================================ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(11,20,17,.16);
  border:1px solid rgba(11,20,17,.16);box-shadow:0 40px 90px -50px rgba(0,0,0,.9)}
.stat{background:var(--cream);padding:clamp(34px,5vw,66px) clamp(18px,2vw,34px);text-align:left;color:#0b1411}
.stat b{display:block;font-family:var(--serif);font-size:clamp(36px,4.6vw,64px);font-weight:600;line-height:1;letter-spacing:-.03em;color:#0b1411}
.stat b i{font-style:normal;font-size:.34em;color:rgba(11,20,17,.5);letter-spacing:.06em;margin-left:.2em;font-family:var(--mono)}
.stat span{display:block;margin-top:16px;font-size:10.5px;letter-spacing:.24em;color:rgba(11,20,17,.62);text-transform:uppercase;font-family:var(--mono)}
.stat:nth-child(2) b,.stat:nth-child(3) b{color:rgba(11,20,17,.46)}

/* ============================================================
   11 · 关于
   ============================================================ */
.reach{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,64px);align-items:start}
.who{display:flex;align-items:center;gap:20px}
.who img{width:64px;height:64px;border-radius:20px;box-shadow:0 20px 40px -18px rgba(0,0,0,.8)}
.who h3{font-family:var(--serif);font-size:clamp(22px,2.4vw,30px);font-weight:600;letter-spacing:.04em}
.who p{margin-top:6px;font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--cream-3);text-transform:uppercase}
.reach .note{margin-top:26px;font-size:13.5px;line-height:2;color:var(--cream-2);max-width:26em}
.reach .note em{font-style:normal;color:var(--cream);border-bottom:1px solid rgba(147,201,183,.4)}

.contacts{list-style:none;border-top:1px solid var(--line-2)}
.contacts li{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;border-bottom:1px solid var(--line-2);transition:padding-left .5s var(--ease)}
.contacts li:hover{padding-left:10px}
.contacts .k{font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--cream-3);width:76px;flex:none;text-transform:uppercase}
.contacts .v{flex:1;font-family:var(--mono);font-size:clamp(13px,1.4vw,16px);letter-spacing:.02em;color:var(--cream)}
.contacts .tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--cream-3);
  border:1px solid var(--line);border-radius:100px;padding:6px 12px;text-transform:uppercase}
.contacts li:hover .tag{color:var(--mint);border-color:rgba(147,201,183,.45)}

/* ============================================================
   12 · 获取
   ============================================================ */
.dl{padding:clamp(90px,12vw,170px) 0;text-align:center;position:relative;overflow:hidden}
.dl::before{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(900px,120vw);aspect-ratio:1;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(47,81,72,.34) 0%,transparent 62%);filter:blur(40px)}
.dl .in{position:relative;z-index:2}
.dl h2{font-size:clamp(34px,5.4vw,76px);letter-spacing:.01em}
.dl p{margin:26px auto 0;max-width:32em;font-size:14px;line-height:2;color:var(--cream-2)}
.dl .btn--solid{margin-top:44px;padding:20px 34px;font-size:14.5px}
.dlgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:780px;margin:46px auto 0}
.dlcard{position:relative;display:block;text-align:left;padding:30px 28px 26px;border:1px solid var(--line);
  border-radius:18px;background:rgba(242,239,231,.028);overflow:hidden;
  transition:transform .55s var(--ease),border-color .45s ease,background .45s ease,box-shadow .45s ease}
.dlcard:hover{transform:translateY(-4px);border-color:rgba(147,201,183,.42);background:rgba(147,201,183,.06);
  box-shadow:0 30px 70px -40px rgba(147,201,183,.55)}
.dlcard__os{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.26em;color:var(--mint);text-transform:uppercase}
.dlcard b{display:block;margin-top:18px;font-family:var(--serif);font-size:clamp(24px,2.6vw,32px);font-weight:600;letter-spacing:.01em;color:var(--cream);line-height:1.15}
.dlcard small{display:block;margin-top:14px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--cream-3);text-transform:uppercase}
.dlcard__go{position:absolute;right:26px;top:30px;font-family:var(--mono);font-size:13px;color:var(--cream-3);
  transition:transform .5s var(--ease),color .4s ease}
.dlcard:hover .dlcard__go{transform:translate(3px,-3px);color:var(--mint)}
.dl-note{max-width:36em;margin:26px auto 0;font-size:12px;line-height:1.9;color:rgba(242,239,231,.42)}
.dl-note b{color:rgba(242,239,231,.7);font-weight:500}
.dl .hash{margin-top:30px;max-width:none;font-family:var(--mono);font-size:11px;line-height:1.9;letter-spacing:.1em;color:rgba(242,239,231,.46);word-break:break-all}
.dl .hash b{display:inline-block;margin-right:.9em;color:var(--mint);font-weight:400;letter-spacing:.18em}
.dl .hash u{display:block;text-decoration:none;margin-top:6px;font-size:10px;letter-spacing:.2em;color:rgba(242,239,231,.32)}

/* 下载客户端 */
.dl-download{max-width:820px;margin:clamp(46px,6vw,66px) auto 0;text-align:left}
.dl-download__top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding-top:24px;border-top:1px solid var(--line)}
.dl-download__k{font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--mint)}
.dl-download__v{font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--cream-3)}
.dlbtns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}
.dlbtn{
  display:flex;align-items:center;gap:14px;min-height:66px;padding:10px 20px 10px 12px;
  border-radius:100px;border:1px solid var(--line);background:rgba(242,239,231,.035);
  transition:transform .5s var(--ease),background .4s ease,border-color .4s ease,box-shadow .5s var(--ease);
  -webkit-tap-highlight-color:transparent;
}
.dlbtn:hover{transform:translateY(-3px);border-color:rgba(147,201,183,.45);background:rgba(147,201,183,.08);
  box-shadow:0 24px 60px -40px rgba(147,201,183,.6)}
.dlbtn__ic{flex:0 0 auto;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  background:rgba(147,201,183,.12);color:var(--mint)}
.dlbtn__ic svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.35;stroke-linecap:round;stroke-linejoin:round}
.dlbtn__t{display:block;min-width:0;font-size:14px;letter-spacing:.06em;line-height:1.35;color:var(--cream)}
.dlbtn__t small{display:block;margin-top:4px;font-family:var(--mono);font-size:8.5px;letter-spacing:.16em;
  color:var(--cream-3);text-transform:uppercase}
.dlbtn__meta{margin-left:auto;text-align:right;font-family:var(--mono);font-size:9.5px;line-height:1.7;
  letter-spacing:.06em;color:var(--cream-3);white-space:nowrap}
.dlbtn__meta b{display:block;font-size:11px;font-weight:400;color:var(--cream-2)}
.dlbtn__go{flex:0 0 auto;font-family:var(--mono);font-size:12px;color:var(--cream-3);
  transition:color .3s ease,transform .4s var(--ease)}
.dlbtn:hover .dlbtn__go{color:var(--mint);transform:translateY(2px)}
.dlbtn--solid{background:var(--cream);border-color:transparent;color:#08100d;
  box-shadow:0 12px 40px -18px rgba(242,239,231,.45)}
.dlbtn--solid .dlbtn__t{color:#08100d}
.dlbtn--solid .dlbtn__t small{color:rgba(8,16,13,.5)}
.dlbtn--solid .dlbtn__meta{color:rgba(8,16,13,.55)}
.dlbtn--solid .dlbtn__meta b{color:#08100d}
.dlbtn--solid .dlbtn__ic{background:rgba(8,16,13,.1);color:#08100d}
.dlbtn--solid .dlbtn__go{color:rgba(8,16,13,.6)}
.dlbtn--solid:hover{background:#fff;border-color:transparent;
  box-shadow:0 26px 60px -30px rgba(147,201,183,.8)}
.dl-download__note{max-width:42em;margin:18px auto 0;text-align:left;font-size:11.5px;line-height:1.9;
  color:rgba(242,239,231,.42)}
.dl-download__note b{font-weight:500;color:rgba(242,239,231,.72)}
.dl-alt{display:flex;align-items:center;gap:16px;max-width:820px;margin:clamp(44px,5vw,58px) auto 0}
.dl-alt::before,.dl-alt::after{content:"";flex:1;height:1px;background:var(--line-2)}
.dl-alt span{font-family:var(--mono);font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cream-3);white-space:nowrap}

/* ============================================================
   13 · 页脚
   ============================================================ */
.foot{border-top:1px solid var(--line-2);padding:46px 0 34px}
.foot__in{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.foot__in .brand b{font-size:15px}
.foot nav{display:flex;gap:24px}
.foot nav a{font-size:12px;letter-spacing:.12em;color:var(--cream-3);transition:color .3s ease}
.foot nav a:hover{color:var(--cream)}
.foot__c{width:100%;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line-2);
  font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:rgba(242,239,231,.26);text-transform:uppercase}

/* ============================================================
   14 · 动效
   ============================================================ */
[data-reveal]{opacity:0;transform:translateY(30px);filter:blur(6px);
  transition:opacity 1.1s var(--ease),transform 1.1s var(--ease),filter 1.1s var(--ease);
  transition-delay:var(--d,0ms)}
[data-reveal].in{opacity:1;transform:none;filter:none}

.ring{position:fixed;left:0;top:0;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;
  border:1px solid rgba(242,239,231,.55);z-index:150;pointer-events:none;
  transition:width .35s var(--ease),height .35s var(--ease),margin .35s var(--ease),background .35s ease,border-color .35s ease,opacity .3s;
  mix-blend-mode:difference}
.ring.big{width:62px;height:62px;margin:-31px 0 0 -31px;background:rgba(242,239,231,.9);border-color:transparent}
@media (hover:none){.ring{display:none}}

/* ============================================================
   15 · 自适应
   ============================================================ */
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:clamp(34px,6vw,58px)}
  .hero__stage{order:2;min-height:auto;padding-top:10px}
  .hero h1{font-size:clamp(42px,8vw,76px)}
  .hero-meta{margin-top:38px}
  .shots{grid-template-columns:1fr;gap:52px}
  .shot:nth-child(2),.shot:nth-child(3){margin-top:0}
  .bento{grid-template-columns:1fr 1fr}
  .card--wide{grid-column:span 2}
  .stats{grid-template-columns:1fr 1fr}
  .reach{grid-template-columns:1fr;gap:44px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px}
  .sec-head p{text-align:left}
  .reel__copy{max-width:56%}
}
@media (max-width:820px){
  .reel__copy h3{font-size:clamp(22px,4.6vw,36px)}
  .reel__chips span:nth-child(2),.reel__chips span:nth-child(3){display:none}
}
@media (max-width:720px){
  .nav__links{display:none}
  .nav__cta{padding:8px 14px;font-size:11px}
  .hero{padding-top:96px}
  .hero__stage{min-height:420px}
  .device{--dw:262px}
  .hero .lead{margin-top:24px}
  .cta{margin-top:32px;gap:10px}
  .btn{padding:14px 20px;font-size:12.5px}
  .cta-dl{margin-top:12px;gap:10px}
  .cta-dl__hint{font-size:8.5px;letter-spacing:.12em}
  .hero-meta{gap:22px;flex-wrap:wrap}
  .bento{grid-template-columns:1fr}
  .card--wide{grid-column:span 1}
  .stats{grid-template-columns:1fr 1fr}
  .foot__in{flex-direction:column;align-items:flex-start}
  .foot nav{flex-wrap:wrap;gap:14px 20px}
  .float-tag.t-b{right:0}
  .float-tag.t-c{display:none}
  .scroll-hint{display:none}
  .manifesto .line{line-height:1.42}
  .reel{aspect-ratio:4/5}
  .reel__copy{top:38%;left:24px;max-width:78%}
  .reel__copy p{letter-spacing:.14em}
  .reel__device{right:50%;top:auto;bottom:-4%;transform:translateX(50%);width:150px;animation:reelFloatM 7s ease-in-out infinite}
  .reel__rings{left:50%;top:30%;width:78%}
  .reel__chips span:nth-child(4){display:none}
  .reel__chips span:nth-child(1){left:6%;bottom:30%}
  .frame__bar{font-size:8.5px;letter-spacing:.16em;padding:12px 14px}
  .frame .corner{width:10px;height:10px}
  .frame .corner.tl{top:10px;left:10px}
  .frame .corner.tr{top:10px;right:10px}
  .frame .corner.bl{bottom:10px;left:10px}
  .frame .corner.br{bottom:10px;right:10px}
  .dlgrid{grid-template-columns:1fr;gap:12px}
  .dlcard{padding:24px 22px 22px}
  .dlcard__go{right:22px;top:24px}
  .dlbtns{grid-template-columns:1fr;gap:10px}
  .dlbtn{min-height:72px;padding:11px 18px 11px 12px}
  .dlbtn__go{display:none}
  .dl-download__note{margin-top:16px;font-size:11px}
  .dl-alt{margin-top:40px}
  .dl-alt span{font-size:8.5px;letter-spacing:.16em}
}
@keyframes reelFloatM{0%,100%{transform:translateX(50%) rotate(-4deg)}50%{transform:translateY(-10px) translateX(50%) rotate(-2deg)}}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  [data-reveal]{opacity:1;transform:none;filter:none}
  html{scroll-behavior:auto}
}