/* Manul 官网 v3 ─ 糯：圆、软、暖。3:2 分栏，1.5 倍字阶，29px 圆角 */
:root{
  --paper:#fbf6ec; --card:#fffdf7; --ink:#2e1f19; --mute:#7a6559; --line:rgba(46,31,25,.12);
  --mustard:#dace29; --mustard-soft:#f3ecb4; --persimmon:#e8744a; --on-accent:#2e1f19;
  --foot:#2e1f19; --foot-ink:#fbf6ec; --stick:#c49a6c;
  --mochi-a:.38; --shadow:0 2px 4px rgba(46,31,25,.05),0 18px 40px rgba(46,31,25,.08);
  --r:29px;
  --s1:8px; --s2:12px; --s3:18px; --s4:27px; --s5:40px; --s6:60px; --s7:90px;
  --f-head:"Fredoka","PingFang SC","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  --f-body:"Nunito",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  --spring:cubic-bezier(.34,1.56,.64,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#1d1512; --card:#2a201b; --ink:#f6eee2; --mute:#bba99b; --line:rgba(246,238,226,.12);
    --mustard-soft:#37311a; --persimmon:#ee8662; --foot:#120c0a; --mochi-a:.12; --stick:#8a6a4a;
    --shadow:0 2px 4px rgba(0,0,0,.3),0 18px 40px rgba(0,0,0,.35); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#1d1512; --card:#2a201b; --ink:#f6eee2; --mute:#bba99b; --line:rgba(246,238,226,.12);
  --mustard-soft:#37311a; --persimmon:#ee8662; --foot:#120c0a; --mochi-a:.12; --stick:#8a6a4a;
  --shadow:0 2px 4px rgba(0,0,0,.3),0 18px 40px rgba(0,0,0,.35); color-scheme:dark;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px;overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 var(--f-body);-webkit-font-smoothing:antialiased;position:relative;isolation:isolate;overflow-x:clip}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,p,ul,figure{margin:0;padding:0}
ul{list-style:none}
h1,h2,h3{font-family:var(--f-head);font-weight:700;letter-spacing:-.01em;text-wrap:balance}
::selection{background:var(--mustard);color:var(--on-accent)}
:focus-visible{outline:3px solid var(--persimmon);outline-offset:3px;border-radius:12px}

.wrap{max-width:1200px;margin-inline:auto;padding-inline:24px}
.split{display:grid;grid-template-columns:3fr 2fr;gap:var(--s6);align-items:center}
.split-rev{grid-template-columns:2fr 3fr}
.split>*{min-width:0}

/* 背景五颗糯米团 */
.mochi-bg{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.mochi-bg span{position:absolute;top:var(--t);left:var(--l);width:var(--s);aspect-ratio:1;border-radius:50%;opacity:var(--mochi-a);transform:translateY(-50%)}
.mochi-bg [data-c="mustard"]{background:var(--mustard)}
.mochi-bg [data-c="persimmon"]{background:var(--persimmon)}

/* 通用：胶囊、标签 */
.pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;border:0;
  font:700 15px/1 var(--f-body);text-decoration:none;cursor:pointer;white-space:nowrap;transition:transform .35s var(--spring),background .2s,color .2s}
.pill:hover{transform:translateY(-2px) scale(1.03)}
.pill:active{transform:scale(.97)}
.pill svg{width:20px;height:20px;flex:none}
.pill-lg{height:56px;padding:0 28px;font-size:17px}
.pill-ink{background:var(--ink);color:var(--paper)}
.pill-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}
.pill-ghost:hover{box-shadow:inset 0 0 0 2px var(--ink)}
.pill-mustard{background:var(--mustard);color:var(--on-accent)}
.pill.soon{cursor:default}
.pill.soon:hover{transform:none}
.chip{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--mustard-soft);font-size:14px;font-weight:800;letter-spacing:.02em;margin-bottom:var(--s3)}
:root:not([data-theme="light"]) .chip{color:var(--ink)}

/* 页眉 */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 82%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 18px/1 var(--f-head)}
.brand img{width:36px;height:36px;border-radius:10px}
.brand b{font-weight:500;color:var(--mute)}
.nav{display:flex;gap:6px}
.nav a{padding:8px 14px;border-radius:999px;text-decoration:none;font-weight:700;font-size:15px;color:var(--mute);transition:background .2s,color .2s}
.nav a:hover{background:var(--mustard-soft);color:var(--ink)}
.tools{display:flex;gap:8px;align-items:center}
.lang{height:40px;min-width:48px;padding:0 14px;font-size:14px}
.store-sm{height:40px;font-size:14px}

/* 封面 */
.hero{padding-block:var(--s6) var(--s7)}
.hero h1{font-size:clamp(40px,5.4vw,76px);text-wrap:balance;line-height:1.12;margin-bottom:var(--s4)}
.hl{white-space:nowrap;background:var(--mustard);color:var(--on-accent);border-radius:.32em;padding:0 .14em;margin:0 .04em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.lead{font-size:20px;line-height:1.65;color:var(--mute);max-width:30em;margin-bottom:var(--s5)}
.cta-row{display:flex;flex-wrap:wrap;gap:var(--s2);margin-bottom:var(--s4)}
.trust{display:flex;flex-wrap:wrap;gap:var(--s3);font-size:15px;font-weight:700;color:var(--mute)}
.trust li{display:flex;align-items:center;gap:8px}
.trust li::before{content:"";width:18px;height:18px;border-radius:50%;background:var(--mustard) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5 9.5l2.6 2.5L13 6.5' fill='none' stroke='%232e1f19' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/18px no-repeat}
.hero-art{position:relative;padding:4% 4% 0}
.moon{position:relative;aspect-ratio:1;border-radius:50%;background:var(--mustard)}
.hero-page{position:absolute;width:52%;left:24%;top:9%;border-radius:18px;transform:rotate(-6deg);box-shadow:var(--shadow);background:#fff;
  animation:float 6s ease-in-out infinite}
.hero-cat{position:absolute;width:74%;left:13%;bottom:-3%;filter:drop-shadow(0 12px 18px rgba(46,31,25,.18))}
.bubble{position:relative;background:var(--card);color:var(--ink);border-radius:var(--r);box-shadow:var(--shadow);font-weight:800}
.bubble-hero{position:absolute;top:2%;right:0;padding:14px 22px;font-size:18px;animation:bob 4s ease-in-out infinite}
.bubble-hero::before,.bubble-hero::after{content:"";position:absolute;border-radius:50%;background:var(--card);box-shadow:var(--shadow)}
.bubble-hero::before{width:16px;height:16px;left:22%;bottom:-20px}
.bubble-hero::after{width:9px;height:9px;left:16%;bottom:-34px}
@keyframes float{50%{transform:rotate(-4deg) translateY(-8px)}}
@keyframes bob{50%{transform:translateY(-6px)}}

/* 波浪 */
.wave{display:block;width:100%;height:60px}
.wave:not(.wave-in):not(.wave-out):not(.wave-foot) path{fill:none;stroke:var(--mustard);stroke-width:3;stroke-linecap:round;vector-effect:non-scaling-stroke}
.wave-in path,.wave-out path{fill:var(--mustard-soft)}
.wave-in{margin-bottom:-1px}
.wave-out{margin-top:-1px}

/* 阅读：气泡 */
.read{padding-block:var(--s7)}
.sec-head{margin-bottom:var(--s5)}
.sec-head h2{font-size:clamp(32px,4vw,54px);line-height:1.18}
.sec-head.center{text-align:center}
.sec-head.center p:not(.chip):not(.big-num){color:var(--mute);font-size:18px;margin-top:var(--s2)}
.bubbles{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--s4) var(--s4);margin-bottom:var(--s6)}
.bubble-card{position:relative;padding:var(--s5);border-radius:var(--r);transition:transform .45s var(--spring)}
.bubble-card:hover{transform:scale(1.025,.975)}
.bubble-card h3{font-size:24px;margin-bottom:var(--s2)}
.bubble-card p{font-size:16px}
.bubble-card::before,.bubble-card::after{content:"";position:absolute;border-radius:50%;background:inherit;box-shadow:inherit}
.bubble-card::before{width:20px;height:20px;bottom:-26px;left:44px}
.bubble-card::after{width:11px;height:11px;bottom:-42px;left:32px}
.b1{grid-column:span 3}
.b2{grid-column:span 2}
.b3{grid-column:span 2}
.b4{grid-column:span 3}
.b2::before,.b4::before{left:auto;right:44px}
.b2::after,.b4::after{left:auto;right:32px}
[data-c="mustard"]{background:var(--mustard);color:var(--on-accent)}
[data-c="persimmon"]{background:var(--persimmon);color:var(--on-accent)}
[data-c="cream"]{background:var(--card);box-shadow:inset 0 0 0 2px var(--line)}
.bubble-card[data-c="cream"]::before,.bubble-card[data-c="cream"]::after{box-shadow:inset 0 0 0 2px var(--line)}
.bubble-card[data-c="mustard"] p,.bubble-card[data-c="persimmon"] p{color:rgba(46,31,25,.82)}
.bubble-card[data-c="cream"] p{color:var(--mute)}

.modes-card{display:grid;grid-template-columns:2fr 3fr;gap:var(--s5);align-items:center;padding:var(--s5);border-radius:var(--r);background:var(--card);box-shadow:var(--shadow)}
.modes-card>*{min-width:0}
.modes-copy h3{font-size:clamp(24px,2.6vw,36px);line-height:1.25;margin-bottom:var(--s2)}
.modes-copy p{color:var(--mute);margin-bottom:var(--s4)}
.seg{--i:0;position:relative;display:grid;grid-template-columns:repeat(3,1fr);padding:5px;border-radius:999px;background:var(--mustard-soft)}
.seg button{position:relative;z-index:1;height:42px;border:0;border-radius:999px;background:transparent;color:var(--ink);font:700 14px/1 var(--f-body);cursor:pointer;padding:0 6px}
.seg button[aria-checked="true"]{color:var(--paper)}
.seg-thumb{position:absolute;top:5px;bottom:5px;left:5px;width:calc((100% - 10px) / 3);border-radius:999px;background:var(--ink);
  transform:translateX(calc(var(--i) * 100%));transition:transform .45s var(--spring)}
.modes-view{position:relative;aspect-ratio:1440/1029;border-radius:18px;overflow:hidden;background:var(--mustard-soft)}
.mv{position:absolute;inset:0;display:flex;opacity:0;visibility:hidden;transform:scale(.97);transition:opacity .35s,transform .45s var(--spring),visibility 0s .35s}
.mv img{width:50%;height:100%;object-fit:cover;background:#fff}
.mv-rtl::after,.mv-ltr::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:8%;transform:translateX(-50%);
  background:linear-gradient(90deg,transparent,rgba(0,0,0,.14) 48%,rgba(0,0,0,.2) 50%,rgba(0,0,0,.14) 52%,transparent)}
.mv-ttb{justify-content:center}
.roll{width:34%;overflow:hidden;background:#fff}
.roll img{width:100%;height:auto;animation:roll 34s linear infinite}
@keyframes roll{to{transform:translateY(-100%)}}
.modes-view[data-mode="rtl"] .mv-rtl,.modes-view[data-mode="ltr"] .mv-ltr,.modes-view[data-mode="ttb"] .mv-ttb{opacity:1;visibility:visible;transform:none;transition:opacity .35s,transform .45s var(--spring)}

/* 增强 */
.band{background:linear-gradient(transparent 59px,var(--mustard-soft) 59px,var(--mustard-soft) calc(100% - 59px),transparent calc(100% - 59px))}
.enhance{padding-block:var(--s6)}
.enh-copy h2{font-size:clamp(32px,3.6vw,50px);line-height:1.18;margin-bottom:var(--s3)}
.enh-copy>p:not(.chip){color:var(--mute);font-size:17px;margin-bottom:var(--s4)}
.enh-copy .fine{font-size:14px;margin:var(--s3) 0 0}
.switch{display:inline-flex;align-items:center;gap:var(--s2);padding:0;border:0;background:none;color:var(--ink);font:800 18px/1 var(--f-body);cursor:pointer}
.switch-track{position:relative;width:76px;height:44px;border-radius:999px;background:var(--line);transition:background .25s}
.switch-knob{position:absolute;top:4px;left:4px;width:36px;height:36px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(46,31,25,.25);transition:transform .45s var(--spring)}
.switch[aria-checked="true"] .switch-track{background:var(--persimmon)}
.switch[aria-checked="true"] .switch-knob{transform:translateX(32px)}
.enh-view{position:relative;aspect-ratio:1;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);background:#fff;cursor:pointer;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.enh-view img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;-webkit-user-drag:none}
.e-after{transition:opacity .4s}
.enh-view[data-on="false"] .e-after{opacity:0}
.e-tag{position:absolute;left:18px;bottom:18px;padding:8px 16px;border-radius:999px;background:var(--ink);color:var(--paper);font-weight:800;font-size:14px}
.enh-view[data-on="true"] .e-off,.enh-view[data-on="false"] .e-on{display:none}
.enh-view[data-on="true"] .e-tag{background:var(--persimmon);color:var(--on-accent)}

/* 团子 */
.formats{padding-block:var(--s7) var(--s6)}
.dango{display:flex;justify-content:center;gap:var(--s6);flex-wrap:wrap}
.dango li{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding-bottom:72px;transform:rotate(var(--rot,0deg))}
.dango li:nth-child(1){--rot:-6deg}
.dango li:nth-child(2){--rot:3deg}
.dango li:nth-child(3){--rot:-3deg}
.dango li:nth-child(4){--rot:6deg}
.dango li::before{content:"";position:absolute;top:-18px;bottom:0;left:50%;width:8px;margin-left:-4px;border-radius:4px;background:var(--stick);z-index:-1}
.dango span{display:grid;place-items:center;width:121px;aspect-ratio:1;border-radius:50%;font:700 22px/1 var(--f-head);
  transition:transform .5s var(--spring);box-shadow:inset 0 -8px 0 rgba(46,31,25,.08)}
.dango span:hover{transform:scale(1.08,.94)}
.dango [data-c="cream"]{box-shadow:inset 0 0 0 2px var(--line),inset 0 -8px 0 rgba(46,31,25,.06)}
.dango .eaten{background:transparent;box-shadow:none;border:3px dashed var(--line)}
.dango .eaten:hover{transform:none}

/* 9 种书源 */
.sources{padding-block:var(--s7)}
.big-num{display:grid;place-items:center;width:1.24em;aspect-ratio:1;border-radius:50%;background:var(--mustard);color:var(--on-accent);
  font:700 182px/1 var(--f-head);margin-bottom:var(--s4);padding-bottom:.06em}
.big-num-sm{font-size:121px;margin-inline:auto}
.src-copy h2{font-size:clamp(32px,4vw,54px);line-height:1.18;margin-bottom:var(--s3)}
.src-copy p:not(.big-num){color:var(--mute);font-size:17px;max-width:28em}
.src-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s3)}
.src-grid li{display:grid;place-items:center;aspect-ratio:1;border-radius:50%;background:var(--card);box-shadow:inset 0 0 0 2px var(--line);
  font:600 clamp(15px,1.7vw,22px)/1.2 var(--f-head);text-align:center;padding:12px;transition:transform .45s var(--spring)}
.src-grid li:hover{transform:translateY(-6px) scale(1.04)}
.src-grid li:nth-child(4n+1){background:var(--mustard);color:var(--on-accent);box-shadow:none}
.src-grid li:nth-child(4n+3){background:var(--persimmon);color:var(--on-accent);box-shadow:none}

/* 私密 */
.private{padding-block:var(--s5) var(--s7)}
.pv-card{background:var(--persimmon);color:var(--on-accent);border-radius:var(--r);padding:var(--s6);overflow:hidden;align-items:end}
.pv-copy{padding-bottom:var(--s3)}
.pv-copy h2{font-size:clamp(32px,4vw,54px);line-height:1.18;margin-bottom:var(--s3)}
.pv-copy>p:not(.chip){font-size:17px;color:rgba(46,31,25,.82);margin-bottom:var(--s4)}
.chip-light{background:rgba(255,253,247,.45)}
:root:not([data-theme="light"]) .chip-light{color:var(--on-accent)}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:var(--s2) var(--s4);font-weight:800}
.checks li{display:flex;align-items:center;gap:10px}
.checks li::before{content:"";flex:none;width:26px;height:26px;border-radius:50%;background:#fffdf7 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 26 26'%3E%3Cpath d='M8 13.5l3.6 3.5L18.5 9.5' fill='none' stroke='%23e8744a' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/26px no-repeat}
.pv-phone{justify-self:center;width:min(100%,300px);margin-bottom:calc(-1 * var(--s6) - 120px);transform:rotate(4deg)}

/* 2 种方式 */
.pro{padding-block:var(--s6) var(--s7)}
.plans{display:grid;grid-template-columns:1fr 1fr;gap:var(--s4);max-width:840px;margin-inline:auto}
.plan{padding:var(--s5);border-radius:var(--r);text-align:center}
.plan h3{font-size:36px;margin-bottom:var(--s1)}
.plan p{font-size:17px}
.plan[data-c="cream"] p{color:var(--mute)}
.devices{text-align:center;margin-top:var(--s5);font-weight:800;color:var(--mute)}

/* 结尾 */
.end{color:var(--foot-ink);position:relative;margin-top:120px}
.wave-foot path{fill:var(--foot)}
.wave-foot{margin-bottom:-1px}
.end-in{background:var(--foot);max-width:none;text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--s4);padding-block:0 var(--s6);position:relative}
.end-cat{width:220px;margin-top:-170px;filter:drop-shadow(0 10px 20px rgba(0,0,0,.25))}
.end h2{font-size:clamp(32px,4vw,54px)}
.end-links{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--s2) var(--s4);font-size:14px;font-weight:700;margin-top:var(--s3)}
.end-links a{text-decoration-color:var(--mustard);text-decoration-thickness:2px;text-underline-offset:5px}
.legal{max-width:40em;font-size:13px;opacity:.7}

@media (max-width:900px){
  .nav{display:none}
  .split,.split-rev{grid-template-columns:1fr;gap:var(--s5)}
  .hero{padding-top:var(--s4)}
  .hero-art{max-width:440px;width:100%;margin-inline:auto}
  .bubbles{grid-template-columns:1fr;gap:var(--s6) 0}
  .b1,.b2,.b3,.b4{grid-column:auto}
  .modes-card{grid-template-columns:1fr;padding:var(--s4)}
  .enhance .enh-view{order:-1}
  .dango{gap:var(--s3)}
  .dango span{width:72px;font-size:15px}
  .dango li{padding-bottom:48px}
  .big-num{font-size:121px}
  .big-num-sm{font-size:81px}
  .pv-card{padding:var(--s5) var(--s4)}
  .pv-phone{width:220px;margin-bottom:-160px}
  .private{padding-bottom:var(--s6)}
  .checks{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
}
@media (max-width:420px){
  .brand span{display:none}
  .dango{gap:10px}
  .dango span{width:66px;font-size:14px}
  .bubble-hero{font-size:15px;padding:10px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}