:root{
  --ink:#0E110F;
  --ink-2:#151914;
  --paper:#E9E3D6;
  --paper-2:#E0D8C6;
  --fg:#1B201B;
  --fg-2:#5D594F;
  --bone:#DAD4C6;
  --bone-2:#918B7F;
  --clay:#A4512B;
  --ember:#CC8058;
  --sage:#77866E;

  --display:"Fraunces",Georgia,"Noto Serif SC","Source Han Serif SC","Songti SC","STZhongsong","STSong","SimSun",serif;
  --body:"Inter","Noto Sans SC","PingFang SC","HarmonyOS Sans SC","MiSans","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;

  --ease:cubic-bezier(.16,1,.3,1);
  --grain:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/></filter><rect width='180' height='180' filter='url(%23n)' opacity='0.55'/></svg>");
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--ink);color:var(--bone);
  font-family:var(--body);font-size:16px;line-height:1.9;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:80;
  background-image:var(--grain);opacity:.05;mix-blend-mode:overlay;
}
::selection{background:var(--clay);color:var(--paper)}
a{color:inherit;text-decoration:none}
svg{display:block}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}

.wrap{width:min(1300px,100% - 96px);margin-inline:auto}

/* ---------- type atoms ---------- */
.label{
  font-family:var(--body);font-size:10px;font-weight:500;
  letter-spacing:.34em;text-transform:uppercase;color:var(--soft);
}
.leader{display:flex;align-items:baseline;gap:14px}
.leader .fill{flex:1;height:1px;border-bottom:1px dotted var(--hair);transform:translateY(-5px)}

/* ---------- nav ---------- */
#progress{position:fixed;top:0;left:0;height:1.5px;width:0;background:var(--clay);z-index:70;transition:width .12s linear}
nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:26px max(48px,calc((100vw - 1300px)/2));
  background:rgba(14,17,15,.55);backdrop-filter:blur(20px) saturate(1.1);
  border-bottom:1px solid rgba(218,212,198,.1);
  transition:background .6s var(--ease),padding .6s var(--ease),border-color .6s var(--ease),color .6s var(--ease);
  color:var(--bone);
}
nav.shrunk{padding-top:16px;padding-bottom:16px;background:rgba(14,17,15,.82)}
nav.light{background:rgba(233,227,214,.86);color:var(--fg);border-bottom-color:rgba(27,32,27,.12)}
nav.light.shrunk{background:rgba(233,227,214,.94)}
.nav-links{display:flex;gap:30px;list-style:none}
.nav-links a{
  font-size:10px;font-weight:500;letter-spacing:.26em;text-transform:uppercase;
  opacity:.62;position:relative;padding-bottom:5px;transition:opacity .4s var(--ease);
}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:currentColor;transition:width .55s var(--ease)}
.nav-links a:hover{opacity:1}
.nav-links a:hover::after{width:100%}
.wordmark{position:absolute;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:5px}
.wordmark .cn{font-family:var(--display);font-size:19px;font-weight:700;letter-spacing:.34em;text-indent:.34em;line-height:1}
.wordmark .en{font-size:8.5px;letter-spacing:.46em;text-indent:.46em;text-transform:uppercase;opacity:.55;font-weight:500}
.nav-right{display:flex;align-items:center;gap:18px}
.btn-line{
  font-size:10px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;
  padding:11px 22px;border:1px solid currentColor;opacity:.8;transition:.5s var(--ease);
}
.btn-line:hover{opacity:1;background:currentColor;letter-spacing:.34em}
nav:not(.light) .btn-line:hover{color:var(--ink)}
nav.light .btn-line:hover{color:var(--paper)}
.menu-btn{display:none;flex-direction:column;gap:6px;padding:6px}
.menu-btn span{width:24px;height:1px;background:currentColor;transition:.45s var(--ease)}
.m-menu{
  position:fixed;inset:0;z-index:59;background:var(--ink);
  display:flex;flex-direction:column;justify-content:center;gap:2px;padding:0 32px;
  clip-path:inset(0 0 100% 0);transition:clip-path .8s var(--ease);
}
.m-menu.open{clip-path:inset(0 0 0 0)}
.m-menu a{
  font-family:var(--display);font-size:clamp(28px,7.4vw,42px);font-weight:500;
  letter-spacing:.14em;color:var(--bone);padding:11px 0;border-bottom:1px solid rgba(218,212,198,.12);
}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;
  padding:140px 0 42px;overflow:hidden;
  --hair:rgba(218,212,198,.18);--soft:var(--bone-2);--accent:var(--ember);
}
.hero-art{position:absolute;inset:-8% 0 -12%;z-index:0}
.hero-art svg{width:100%;height:100%}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(178deg,rgba(14,17,15,.62) 0%,rgba(14,17,15,.12) 30%,rgba(14,17,15,.55) 68%,var(--ink) 100%);
}
.hero-inner{position:relative;z-index:3}
.hero-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:30px}
.hero-kicker .dash{width:56px;height:1px;background:var(--hair)}
h1.hero-title{
  font-family:var(--display);font-weight:700;
  font-size:clamp(72px,13.5vw,196px);line-height:.94;letter-spacing:.11em;text-indent:.11em;color:var(--paper);
}
.mask{overflow:hidden;display:block;padding-bottom:.06em}
.mask > span{display:block}
.js .mask > span{transform:translateY(112%);opacity:0}
.js .hero-ready .mask > span{animation:rise 1.35s var(--ease) forwards}
.js .hero-ready .m2 > span{animation-delay:.14s}
@keyframes rise{to{transform:translateY(0);opacity:1}}
.hero-tagline{margin-top:34px;display:flex;flex-wrap:wrap;align-items:center;gap:26px}
.hero-tagline .rule-v{width:1px;height:44px;background:var(--hair)}
.hero-tagline p{font-family:var(--display);font-size:clamp(17px,2.1vw,27px);letter-spacing:.22em;color:var(--paper);opacity:.92}
.hero-body{margin-top:30px;max-width:46ch;color:var(--bone);opacity:.72;font-size:14.5px;line-height:2.15;font-weight:300;letter-spacing:.02em}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin-top:44px}
.cta{
  display:inline-flex;align-items:center;gap:16px;
  font-size:11px;font-weight:500;letter-spacing:.32em;text-transform:uppercase;
  padding-bottom:9px;border-bottom:1px solid currentColor;transition:.55s var(--ease);
}
.cta svg{width:15px;height:15px;transition:transform .55s var(--ease)}
.cta:hover{letter-spacing:.42em}
.cta:hover svg{transform:translateX(8px)}
.cta.primary{color:var(--ember)}
.cta.ghost{opacity:.6}
.cta.ghost:hover{opacity:1}
.hero-meta{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:clamp(56px,8vh,88px);border-top:1px solid var(--hair);
}
.hero-meta .cell{padding:22px 22px 0 0}
.hero-meta .k{font-family:var(--display);font-size:clamp(18px,2vw,25px);font-weight:400;letter-spacing:.06em;color:var(--paper)}
.hero-meta .v{margin-top:8px;font-size:9.5px;letter-spacing:.32em;text-transform:uppercase;opacity:.5}
.rail{
  position:absolute;left:max(20px,calc((100vw - 1300px)/2 - 62px));top:22vh;z-index:3;
  display:flex;flex-direction:column;gap:26px;align-items:flex-end;
}
.rail .tick{display:flex;align-items:center;gap:10px;opacity:.42}
.rail .tick span{font-family:var(--display);font-size:10px;letter-spacing:.22em;font-variant-numeric:tabular-nums}
.rail .tick i{display:block;width:18px;height:1px;background:var(--bone)}
.scroll-cue{
  position:absolute;right:max(48px,calc((100vw - 1300px)/2));bottom:42px;z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:14px;opacity:.55;
}
.scroll-cue .line{width:1px;height:64px;background:linear-gradient(180deg,transparent,var(--bone));animation:cue 2.6s var(--ease) infinite}
@keyframes cue{0%,100%{transform:scaleY(.3);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}}
.scroll-cue span{writing-mode:vertical-rl;font-size:9px;letter-spacing:.5em;text-transform:uppercase}

/* ---------- section frame ---------- */
.sec{position:relative;padding:clamp(96px,13vw,178px) 0}
.sec[data-tone="light"]{background:var(--paper);color:var(--fg);--hair:rgba(27,32,27,.18);--soft:var(--fg-2);--accent:var(--clay)}
.sec[data-tone="dark"]{background:var(--ink);color:var(--bone);--hair:rgba(218,212,198,.17);--soft:var(--bone-2);--accent:var(--ember)}
.sec::after{
  content:"";position:absolute;inset:0;pointer-events:none;background-image:var(--grain);
  opacity:.038;mix-blend-mode:multiply;
}
.sec-head{
  display:grid;grid-template-columns:66px minmax(0,1.15fr) minmax(0,1fr);
  gap:clamp(22px,4vw,68px);align-items:start;
  border-top:1px solid var(--hair);padding-top:26px;
  margin-bottom:clamp(56px,7vw,96px);position:relative;
}
.sec-idx{font-family:var(--display);font-size:12px;letter-spacing:.28em;color:var(--accent);font-variant-numeric:tabular-nums;padding-top:12px}
.sec-title{font-family:var(--display);font-weight:700;font-size:clamp(32px,4.6vw,62px);line-height:1.22;letter-spacing:.05em}
.sec-lede{color:var(--soft);font-size:15px;line-height:2.15;font-weight:300;padding-top:10px}
.sec-lede em{font-style:normal;color:var(--accent)}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(44px,6vw,104px);align-items:start}
.statement{font-family:var(--display);font-weight:400;font-size:clamp(24px,2.9vw,40px);line-height:1.62;letter-spacing:.04em}
.statement b{font-weight:700;color:var(--accent)}
.statement + p{margin-top:28px;color:var(--soft);font-size:14.5px;line-height:2.2;font-weight:300;max-width:46ch}

.assure{margin-top:44px;border-top:1px solid var(--hair)}
.assure .row{padding:17px 0;border-bottom:1px solid var(--hair)}
.assure .row .t{font-family:var(--display);font-size:15px;letter-spacing:.14em}
.assure .row .d{font-size:12.5px;color:var(--soft);letter-spacing:.04em;margin-top:5px;font-weight:300}
.sec[data-tone="dark"] .panel{background:rgba(218,212,198,.032)}
.stat-grid .n{font-family:var(--display);font-size:clamp(28px,3.2vw,42px);line-height:1;font-weight:300;font-variant-numeric:tabular-nums;letter-spacing:.01em}
.stat-grid .n .u{font-size:.34em;letter-spacing:.22em;margin-left:.42em;color:var(--accent);text-transform:uppercase}
.stat-grid .l{margin-top:14px;font-size:9px;letter-spacing:.32em;text-transform:uppercase;color:var(--soft)}
.tenure .t{font-family:var(--display);font-size:14px;letter-spacing:.18em}
.tenure .v{font-family:var(--display);font-size:14px;letter-spacing:.14em;color:var(--accent);font-variant-numeric:tabular-nums}
.heat-legend i.on{border-color:transparent}
.review .row{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:12px 0;border-bottom:1px solid var(--hair)}
.review .row:last-child{border-bottom:none}
.review .k{font-family:var(--display);font-size:15px;letter-spacing:.12em}
.review .v{font-family:var(--display);font-size:16px;letter-spacing:.08em;font-variant-numeric:tabular-nums}
.spec-row .body{font-family:var(--display);font-size:clamp(16px,1.5vw,19px);line-height:1.95;letter-spacing:.03em}
.spec-row .body .mount{display:block;font-family:var(--body);font-size:9.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.difficulty i.on{background:currentColor;opacity:1}
.spec-note{margin-top:22px;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--soft);opacity:.8}

.viewswitch{display:flex;gap:10px;margin-top:34px}
.viewswitch .v{
  flex:1;border:1px solid var(--hair);padding:18px 18px;display:flex;justify-content:space-between;align-items:baseline;
  transition:.55s var(--ease);
}
.viewswitch .v:hover{border-color:var(--accent);transform:translateY(-3px)}
.viewswitch .v .a{font-family:var(--display);font-size:16px;letter-spacing:.18em}
.viewswitch .v .b{font-size:9px;letter-spacing:.3em;text-transform:uppercase;color:var(--soft)}
.photo-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:10px;border:1px solid var(--hair)}
.photo-strip .cell{padding:18px 16px;border-right:1px solid var(--hair)}
.photo-strip .cell:last-child{border-right:none}
.photo-strip .k{font-family:var(--display);font-size:17px;letter-spacing:.12em}
.photo-strip .d{margin-top:8px;font-size:9px;letter-spacing:.28em;text-transform:uppercase;color:var(--soft)}

/* ---------- 04 计划 ---------- */
.ledger{border-top:1px solid var(--hair)}
.ledger .item{
  display:grid;grid-template-columns:112px minmax(0,.9fr) minmax(0,1.1fr);
  gap:clamp(20px,3.4vw,56px);align-items:baseline;
  padding:clamp(30px,3.6vw,48px) 0;border-bottom:1px solid var(--hair);
  transition:.7s var(--ease);position:relative;
}
.ledger .item::before{
  content:"";position:absolute;left:-28px;right:-28px;top:0;bottom:0;z-index:-1;
  background:rgba(204,128,88,.07);opacity:0;transition:opacity .6s var(--ease);
}
.ledger .item:hover::before{opacity:1}
.ledger .item:hover .ord{color:var(--accent)}
.ledger .ord{
  font-family:var(--display);font-size:clamp(30px,3.6vw,50px);font-weight:300;line-height:1;
  letter-spacing:.06em;font-variant-numeric:tabular-nums;transition:color .6s var(--ease);
}
/* ★标题字号/字距按「4 个汉字必须排得下」定：以前 32px + .16em 需要 148.5px，
   而该列只有 148px → 「三态徽章」被挤成「三态徽 / 章」单字孤行 */
.ledger .tt{font-family:var(--display);font-size:clamp(20px,2.05vw,28px);letter-spacing:.12em;font-weight:500}
.ledger .tt .en{display:block;margin-top:10px;font-family:var(--body);font-size:9.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--soft);font-weight:500}
.ledger .dd{color:var(--soft);font-size:14.5px;line-height:2.15;font-weight:300}

/* ---------- 05 搜索 ---------- */
.finder{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(44px,6vw,96px);align-items:start}
.filters{margin-top:40px;border-top:1px solid var(--hair)}
.filters .f{display:flex;align-items:baseline;gap:18px;padding:15px 0;border-bottom:1px solid var(--hair);transition:.5s var(--ease)}
.filters .f:hover{padding-left:10px}
.filters .f .fi{font-family:var(--display);font-size:11px;letter-spacing:.24em;color:var(--accent);width:34px}
.filters .f .fn{font-family:var(--display);font-size:15.5px;letter-spacing:.1em}
.filters .f .fill{flex:1;height:1px;border-bottom:1px dotted var(--hair);transform:translateY(-5px)}
.filters .f .fd{font-size:11px;color:var(--soft);letter-spacing:.06em;font-weight:300}
.sec[data-tone="dark"] .search\boxed{background:rgba(218,212,198,.03)}
.searchbar .q{font-family:var(--display);font-size:17px;letter-spacing:.14em;min-height:1.35em}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:0}}
.results li.on{opacity:1;transform:none}

/* ---------- 06 分享 ---------- */
.share{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(48px,6vw,110px);align-items:center}
.p-stats .s .n{font-family:var(--display);font-size:21px;line-height:1;font-variant-numeric:tabular-nums;font-weight:400}
.p-stats .s .l{margin-top:8px;font-size:7.5px;letter-spacing:.26em;text-transform:uppercase;opacity:.6}

.spec-list{border-top:1px solid var(--hair)}
.spec-list .r{display:grid;grid-template-columns:78px minmax(0,1fr);gap:22px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--hair)}
.spec-list .r .k{font-size:9px;letter-spacing:.32em;text-transform:uppercase;color:var(--accent)}
.spec-list .r .v{font-family:var(--display);font-size:16.5px;letter-spacing:.05em;line-height:1.75}
.formats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:38px}
.fmt{border:1px solid var(--hair);padding:20px 18px;display:flex;flex-direction:column;gap:9px;transition:.6s var(--ease)}
.fmt:hover{border-color:var(--accent);transform:translateY(-4px)}
.fmt .a{font-family:var(--display);font-size:17px;letter-spacing:.12em}
.fmt .b{font-size:8.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--soft)}

/* ---------- 07 设置 / 同步 ---------- */
.schema{display:flex;flex-direction:column}
.node{
  border:1px solid var(--hair);padding:26px 28px;display:flex;align-items:baseline;justify-content:space-between;
  transition:.6s var(--ease);
}
.node:hover{border-color:var(--accent);transform:translateY(-3px)}
.node .nk{font-family:var(--display);font-size:clamp(19px,2vw,24px);letter-spacing:.12em}
.node .nv{font-size:9px;letter-spacing:.32em;text-transform:uppercase;color:var(--soft)}
.node.accent{border-color:var(--accent);background:rgba(164,81,43,.07)}
.node.accent .nk{color:var(--accent)}
.tether{height:52px;position:relative}
.tether::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--hair)}
.tether::after{
  content:"";position:absolute;left:calc(50% - 3px);top:50%;width:5px;height:5px;
  border:1px solid var(--accent);transform:translateY(-50%) rotate(45deg);background:var(--paper);
}
.sec[data-tone="dark"] .tether::after{background:var(--ink)}
.sync-quad{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;border:1px solid var(--hair);margin-top:14px}
.sync-quad .q{padding:16px 12px;text-align:center}
.sync-quad .q .a{font-family:var(--display);font-size:13px;letter-spacing:.16em}
.sync-quad .q .b{margin-top:7px;font-size:8px;letter-spacing:.3em;text-transform:uppercase;color:var(--soft)}

.set-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 clamp(28px,4vw,64px);border-top:1px solid var(--hair)}
.set-grid .r{padding:15px 0;border-bottom:1px solid var(--hair)}
.set-grid .r .t{display:flex;align-items:baseline;gap:12px}
.set-grid .r .t .name{font-family:var(--display);font-size:15px;letter-spacing:.12em;white-space:nowrap}
.set-grid .r .t .fill{flex:1;height:1px;border-bottom:1px dotted var(--hair);transform:translateY(-5px)}
.set-grid .r .t .val{font-size:8.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--accent)}
.set-grid .r .d{margin-top:5px;font-size:11.5px;color:var(--soft);letter-spacing:.04em;font-weight:300}

/* ---------- 08 安全 ---------- */
.shield-list{border-top:1px solid var(--hair)}
.shield-list .row{
  display:grid;grid-template-columns:66px minmax(0,.9fr) minmax(0,1.3fr);gap:clamp(18px,3vw,48px);
  align-items:baseline;padding:clamp(22px,2.6vw,32px) 0;border-bottom:1px solid var(--hair);
  transition:.6s var(--ease);
}
.shield-list .row:hover{padding-left:12px}
.shield-list .row .n{font-family:var(--display);font-size:11px;letter-spacing:.28em;color:var(--accent)}
.shield-list .row .t{font-family:var(--display);font-size:clamp(19px,2.1vw,26px);letter-spacing:.12em;line-height:1.5}
.shield-list .row .d{color:var(--soft);font-size:13.5px;line-height:2.1;font-weight:300}

/* ---------- privacy spread ---------- */
.spread{background:var(--paper-2);color:var(--fg);--hair:rgba(27,32,27,.18);--soft:var(--fg-2);--accent:var(--clay)}
.spread .wrap{position:relative;z-index:2;text-align:center}
.spread .mark{font-family:var(--display);font-size:clamp(52px,8vw,110px);line-height:.6;color:var(--clay);opacity:.32;margin-bottom:18px}
.spread blockquote{
  font-family:var(--display);font-weight:400;
  font-size:clamp(23px,3.6vw,52px);line-height:1.62;letter-spacing:.05em;max-width:20ch;margin-inline:auto;
}
.spread blockquote b{font-weight:700;color:var(--clay)}
.spread .body{
  margin:32px auto 0;max-width:44ch;color:var(--fg-2);
  font-size:14.5px;line-height:2.3;font-weight:300;letter-spacing:.03em;
}
.spread .attrib{margin-top:32px;font-size:9.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--soft);line-height:2.2}
.spread .zeros{
  display:flex;justify-content:center;gap:clamp(28px,6vw,88px);
  margin-top:clamp(52px,7vw,86px);padding-top:38px;border-top:1px solid var(--hair);
}
.spread .zeros .z .n{font-family:var(--display);font-size:clamp(36px,4.6vw,60px);line-height:1;font-weight:300}
.spread .zeros .z .l{margin-top:12px;font-size:9px;letter-spacing:.34em;text-transform:uppercase;color:var(--soft)}

/* ---------- finale ---------- */
.finale{position:relative;overflow:hidden;padding:clamp(110px,15vw,210px) 0;isolation:isolate}
.finale-art{position:absolute;inset:-10% 0 -14%;z-index:-2}
.finale-art svg{width:100%;height:100%}
.finale::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,var(--ink) 0%,rgba(14,17,15,.42) 34%,rgba(14,17,15,.66) 72%,var(--ink) 100%);
}
.finale .wrap{text-align:center;position:relative;z-index:2}
.finale h2{
  font-family:var(--display);font-weight:700;
  font-size:clamp(34px,6.2vw,86px);line-height:1.3;letter-spacing:.12em;text-indent:.12em;color:var(--paper);
}
.finale p{margin:32px auto 0;max-width:38ch;color:var(--bone);opacity:.76;font-size:15px;line-height:2.3;font-weight:300;letter-spacing:.06em}
.store-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:52px}
.store{
  min-width:190px;border:1px solid rgba(218,212,198,.24);padding:19px 28px;
  display:flex;flex-direction:column;align-items:center;gap:5px;transition:.6s var(--ease);
}
.store:hover{border-color:var(--ember);transform:translateY(-5px);background:rgba(204,128,88,.09)}
.store .a{font-family:var(--display);font-size:16px;letter-spacing:.18em;color:var(--paper)}
.store .b{font-size:8.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--bone-2)}
.legal{margin-top:36px;font-size:9px;letter-spacing:.32em;text-transform:uppercase;color:var(--bone-2);opacity:.75}

/* ---------- footer ---------- */
footer{background:#090B09;padding:clamp(64px,9vw,110px) 0 30px;--hair:rgba(218,212,198,.13);--soft:var(--bone-2)}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(28px,4vw,64px);padding-bottom:52px;border-bottom:1px solid var(--hair)}
.f-brand .wm{
  font-family:var(--display);font-size:clamp(20px,2.1vw,29px);font-weight:700;
  letter-spacing:.2em;text-indent:.2em;color:var(--paper);white-space:nowrap;
}
.f-brand .en{margin-top:12px;font-size:9px;letter-spacing:.5em;text-transform:uppercase;color:var(--soft)}
.f-brand p{margin-top:24px;max-width:32ch;font-size:12.5px;line-height:2.1;color:var(--soft);font-weight:300}
.f-col h6{font-size:8.5px;letter-spacing:.36em;text-transform:uppercase;color:var(--soft);margin-bottom:20px;font-weight:500}
.f-col a{display:block;padding:7px 0;font-size:12.5px;color:var(--bone);opacity:.62;transition:.5s var(--ease);letter-spacing:.06em}
.f-col a:hover{opacity:1;transform:translateX(6px);color:var(--ember)}
.f-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding-top:26px}
.f-bottom span{font-size:8.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--soft)}

/* ---------- reveal（★只在 .js 下才隐藏，防 JS 失效时整页空白） ---------- */
.reveal{transition:opacity 1.15s var(--ease),transform 1.15s var(--ease)}
.js .reveal{opacity:0;transform:translateY(28px)}
.js .reveal.on{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}
.d4{transition-delay:.4s}.d5{transition-delay:.5s}.d6{transition-delay:.6s}

/* ---------- responsive ---------- */
/* ★首屏标语 16 字 × .22em 字距在 360/320 上会折成两行 → 窄屏收字距与字号，保住一行 */
@media (max-width:400px){
  .hero-tagline{gap:18px}
  .hero-tagline .rule-v{height:34px}
  .hero-tagline p{font-size:14.5px;letter-spacing:.1em}
}
@media(max-width:1200px){.rail{display:none}}
@media(max-width:1080px){
  .split,.finder,.share{grid-template-columns:1fr}
  .sec-head{grid-template-columns:52px minmax(0,1fr);row-gap:22px}
  .sec-lede{grid-column:2}
  .shield-list .row{grid-template-columns:44px minmax(0,1fr);row-gap:10px}
  .shield-list .row .d{grid-column:2}
}
@media(max-width:860px){
  .nav-links,.nav-right .btn-line{display:none}
  .menu-btn{display:flex}
  .wordmark{position:static;transform:none;align-items:flex-start}
  nav{padding-inline:24px}
  .wrap{width:calc(100% - 44px)}
  .hero{padding-top:120px}
  .hero-meta{grid-template-columns:repeat(2,1fr);gap:0 18px}
  .hero-meta .cell{padding:18px 0 0}
  .scroll-cue{display:none}
  .ledger .item{grid-template-columns:1fr;gap:16px}
  .photo-strip{grid-template-columns:repeat(2,1fr)}
  .photo-strip .cell:nth-child(2n){border-right:none}
  .spread .zeros{flex-wrap:wrap;gap:28px}
  .formats{grid-template-columns:1fr}
  .set-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
  .f-brand{grid-column:1/-1}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal,.js .reveal,.js .reveal.on{opacity:1!important;transform:none!important}
  .mask > span,.js .mask > span{transform:none!important;opacity:1!important}
}
/* ---------- 真机截图 ----------
   ★官网所有「示例」一律用 App 自己渲染出来的真机截图，不做假界面。
   ★img 必须 height:auto —— HTML 上的 width/height 属性会被当固定像素，
     只覆盖 width 不覆盖 height 就会把图纵向拉长。 */
.phone{position:relative;margin:0}
.phone img{
  display:block;width:100%;height:auto;
  border:1px solid var(--hair);background:var(--paper);
}
.phone figcaption{
  margin-top:16px;display:flex;align-items:baseline;justify-content:center;gap:11px;color:var(--soft);
}
.phone figcaption .n{
  font-family:var(--display);font-size:10px;letter-spacing:.2em;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.phone figcaption .t{font-size:11.5px;letter-spacing:.24em}
.phone figcaption .e{font-size:8.5px;letter-spacing:.3em;text-transform:uppercase;opacity:.62}
/* 双列里放手机：限宽居中，别把图撑成一面墙
   ★必须写 width:100% —— 只写 max-width + margin-inline:auto 时，grid item 会退化成
     「按内容收缩」（auto 外边距会取消 stretch），图片没加载前容器只剩标题那么宽（≈110px），
     加载完跳到 352px → 整页抖一次（实测 842px）。width:100% 先把宽度钉死，max-width 再封顶。 */
.phone-single{width:100%;max-width:352px;margin-inline:auto;min-width:0}
.phone-single.phone-lg{max-width:400px}
/* 分享卡：3:4 竖图，不是手机屏 */
.card-frame{width:100%;max-width:420px;margin-inline:auto;min-width:0}
.card-frame img{
  display:block;width:100%;height:auto;
  border:1px solid var(--hair);background:var(--paper);
}
.card-frame figcaption{margin-top:16px;font-size:10px;letter-spacing:.24em;color:var(--soft);text-align:center}

/* ---------- 真机画廊（四页 + 深色） ---------- */
.shot-row{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:clamp(14px,1.8vw,26px);max-width:1160px;margin-inline:auto;
}
@media (max-width:900px){ .shot-row{grid-template-columns:repeat(3,minmax(0,1fr))} }
@media (max-width:560px){ .shot-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px} }

/* ---------- 更新日志 ---------- */
.rel-list{border-top:1px solid var(--hair)}
.rel-item{
  display:grid;grid-template-columns:158px 1fr;gap:clamp(20px,3vw,44px);
  padding:clamp(26px,3.2vw,40px) 0;border-bottom:1px solid var(--hair);
}
.rel-ver{font-family:var(--display);font-size:15px;letter-spacing:.1em;font-variant-numeric:tabular-nums}
.rel-ver span{display:block;margin-top:7px;font-size:10px;letter-spacing:.22em;color:var(--soft);font-variant-numeric:tabular-nums}
.rel-item ul{list-style:none;display:grid;gap:13px}
.rel-item li{
  position:relative;padding-left:18px;
  font-size:13.5px;line-height:2;color:var(--soft);font-weight:300;
}
.rel-item li::before{content:"";position:absolute;left:0;top:1.05em;width:7px;height:1px;background:var(--accent)}
.rel-item li b{color:inherit;font-weight:500}
.rel-more{margin-top:32px;font-size:12px;letter-spacing:.08em}
.rel-more a{border-bottom:1px solid var(--hair);padding-bottom:3px;transition:border-color .4s var(--ease)}
.rel-more a:hover{border-bottom-color:var(--accent)}

@media (max-width:820px){
  .rel-item{grid-template-columns:1fr;gap:14px}
}

/* ==========================================================================
   内容页（隐私政策 / 免责声明）—— 与首页同一套令牌
   ========================================================================== */
.doc{
  --hair:rgba(27,32,27,.18);
  --soft:var(--fg-2);
  --accent:var(--clay);
  background:var(--paper);color:var(--fg);min-height:70vh;
  padding:clamp(64px,9vw,124px) 0 clamp(80px,10vw,140px)}
.doc .doc-head{border-bottom:1px solid var(--hair);padding-bottom:clamp(26px,3.4vw,42px)}
.doc h1{font-family:var(--display);font-weight:700;font-size:clamp(34px,5vw,66px);
  line-height:1.18;letter-spacing:.045em}
.doc .doc-meta{margin-top:20px;color:var(--soft);font-size:12.5px;line-height:2.1;
  letter-spacing:.06em;font-weight:300}
.doc article{max-width:760px;margin-top:clamp(38px,4.6vw,62px)}
.doc article h2{font-family:var(--display);font-weight:500;font-size:clamp(18px,1.9vw,23px);
  letter-spacing:.06em;margin:clamp(34px,4vw,52px) 0 14px;color:var(--fg)}
.doc article h2:first-child{margin-top:0}
.doc article p{font-size:14.5px;line-height:2.15;color:var(--soft);font-weight:300}
.doc article p + p{margin-top:14px}
.doc article b{color:var(--fg);font-weight:500}
.doc article a{color:var(--accent);border-bottom:1px solid var(--hair);padding-bottom:2px}
.doc article a:hover{border-bottom-color:var(--accent)}
.doc .doc-foot{margin-top:clamp(44px,5.4vw,72px);padding-top:clamp(26px,3.4vw,40px);
  border-top:1px solid var(--hair);font-size:12px;letter-spacing:.08em}
.doc .doc-foot a{border-bottom:1px solid var(--hair);padding-bottom:3px}

.doc-page #progress{display:none}
.doc-page nav{
  background:rgba(233,227,214,.9);
  backdrop-filter:blur(2px) saturate(150%);
  -webkit-backdrop-filter:blur(2px) saturate(150%);
  border-bottom:1px solid rgba(27,32,27,.16);
  color:var(--fg);
}
.doc-page nav .wordmark{color:var(--fg)}
.doc-page nav .wordmark .en{opacity:.5}
.doc-page nav .btn-line{color:var(--fg);border-color:rgba(27,32,27,.26)}
.doc-page nav .btn-line:hover{border-color:var(--clay);color:var(--clay)}
.doc-page .sec-idx{color:var(--clay)}

/* ==========================================================================
   窄屏修正（2026-09-28）
   ★ grid item 默认 min-width:auto = 内容最小宽度 —— 里面只要有 width:max-content
     的元素（如年度热力图 .heat = 53 列）就会把整列撑爆 → 必须显式 min-width:0
   ========================================================================== */
.split > *, .finder > *, .share > *{min-width:0}

@media (max-width:860px){
  .split, .finder{grid-template-columns:1fr;gap:clamp(38px,7vw,58px)}
}
/* ★.ledger 的悬浮高光是左右各外扩 28px 的装饰 —— 桌面 48px 页边距撑得住，
   窄屏（页边距收到 22px）会顶出视口 6px → 收平，不再靠 body 的 overflow-x 兜着 */
@media (max-width:1080px){
  .ledger .item::before{left:0;right:0}
}
@media (max-width:520px){
  .sync-quad{grid-template-columns:repeat(2,1fr)}
}