/* ==========================================================
   deviceteach · 财经商贸基础
   象牙白 / 暖灰 / 墨黑 交替分区 · 香槟金点缀 · 每课一个低饱和主题色
   ========================================================== */
:root{
  --paper:#fff; --paper-2:#f5f5f7; --card:#fff; --tint:#f5f5f7;
  --ink:#1d1d1f; --ink-2:#424245; --mute:#6e6e73; --line:#d2d2d7; --line-2:#e8e8ed;
  --night:#000; --night-2:#1d1d1f; --night-3:#2c2c2e; --night-mute:#a1a1a6;
  --gold:#0071e3; --gold-2:#2997ff; --gold-3:#d6e8ff;
  --gold-grad:linear-gradient(180deg,#2997ff 0%,#0071e3 100%);
  --ok:#248a3d; --ok-bg:#e9f6ec; --bad:#d70015; --bad-bg:#fdeceb;
  --ac:#0071e3; --ac-bg:#e8f2fd;
  --r-xl:28px; --r-l:20px; --r-m:14px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --serif:var(--sans);
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1); --out:cubic-bezier(.16,1,.3,1); --spring:cubic-bezier(.34,1.4,.64,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip;scroll-padding-top:110px}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
::selection{background:#b3d7ff;color:var(--ink)}
.wrap{width:min(1120px,90vw);margin:0 auto}
.wrap-s{width:min(860px,90vw);margin:0 auto}
.gold{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:var(--mono)}
.serif{font-family:var(--serif)}

/* ---------- 全局导航 ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:100;height:52px;background:rgba(250,249,246,.78);
  backdrop-filter:saturate(160%) blur(18px);-webkit-backdrop-filter:saturate(160%) blur(18px);border-bottom:1px solid rgba(0,0,0,.06);transition:background .5s,color .5s,border-color .5s}
.nav.dark{background:rgba(14,14,16,.72);color:#f5f5f7;border-color:rgba(255,255,255,.07)}
.nav .wrap{height:100%;display:flex;align-items:center;gap:30px}
.mark{display:flex;align-items:center;gap:9px;font-weight:600;font-size:16px;letter-spacing:-.01em}
.mark i{width:20px;height:20px;border-radius:6px;background:var(--ink);position:relative;overflow:hidden;flex:none}
.nav.dark .mark i{background:#f5f5f7}
.mark i::after{content:"";position:absolute;left:4px;right:4px;bottom:4px;height:9px;
  background:linear-gradient(90deg,var(--gold-2) 0 3px,transparent 3px 5px,var(--gold-2) 5px 8px,transparent 8px 10px,var(--gold-2) 10px);
  clip-path:polygon(0 70%,30% 40%,55% 55%,100% 0,100% 100%,0 100%)}
.nav-links{display:flex;gap:24px;margin-left:auto;font-size:13px}
.nav-links a{opacity:.72;transition:opacity .25s}
.nav-links a:hover,.nav-links a.cur{opacity:1}
.nav-links a.cur{font-weight:600}
.nav-cta{font-size:12.5px;font-weight:500;padding:6px 14px;border-radius:99px;background:var(--ink);color:#fff;transition:transform .3s var(--spring)}
.nav-cta:hover{transform:scale(1.05)}
.nav.dark .nav-cta{background:#f5f5f7;color:var(--ink)}

/* ---------- 通用 ---------- */
.sec{padding:130px 0;position:relative}
.sec.alt{background:var(--paper-2)}
.sec.night{background:var(--night);color:#f5f5f7}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;font-weight:600;letter-spacing:.22em;color:var(--gold);margin-bottom:18px}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.night .eyebrow{color:var(--gold-2)}
.h1{font-size:clamp(46px,7.2vw,92px);font-weight:700;line-height:1.06;letter-spacing:-.025em}
.h2{font-size:clamp(34px,4.8vw,60px);font-weight:700;line-height:1.1;letter-spacing:-.02em}
.h3{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.lead{font-size:clamp(17px,1.7vw,21px);color:var(--mute);line-height:1.7;max-width:720px}
.night .lead{color:var(--night-mute)}
.center{text-align:center}.center .lead{margin-inline:auto}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:99px;font-size:16px;font-weight:500;transition:transform .35s var(--spring),background .3s,box-shadow .3s}
.btn:hover{transform:translateY(-2px)}
.btn-ink{background:var(--ink);color:#fff;box-shadow:0 10px 30px -14px rgba(0,0,0,.5)}
.btn-light{background:#f5f5f7;color:var(--ink)}
.btn-line{border:1px solid currentColor}
.link{color:var(--gold);font-weight:500;display:inline-flex;align-items:center;gap:4px}
.link::after{content:"→";transition:transform .3s var(--out)}
.link:hover::after{transform:translateX(4px)}
.night .link{color:var(--gold-2)}

/* 滚动显现：结束状态一律 opacity:1 */
.rv{opacity:0;transform:translateY(34px);filter:blur(6px);transition:opacity 1.1s var(--out),transform 1.1s var(--out),filter 1.1s var(--out)}
.rv.in{opacity:1;transform:none;filter:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}.d5{transition-delay:.4s}
.mask-line{display:block;overflow:hidden;padding-bottom:.06em;white-space:nowrap}
.mask-line>span{display:block;transform:translateY(105%);transition:transform 1.2s var(--out)}
.in .mask-line>span,.mask-line.in>span{transform:none}
.in .mask-line:nth-child(2)>span{transition-delay:.12s}
.in .mask-line:nth-child(3)>span{transition-delay:.24s}

/* ---------- 首页 HERO ---------- */
.hero{position:relative;min-height:100vh;background:var(--night);color:#f5f5f7;overflow:hidden;display:flex;align-items:center;padding:110px 0 70px}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(50% 60% at 72% 42%,rgba(41,151,255,.10),transparent 70%),radial-gradient(40% 50% at 15% 85%,rgba(94,92,230,.08),transparent 70%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(40px,5vw,74px);font-weight:700;line-height:1.08;letter-spacing:-.03em}
.hero .lead{margin:28px 0 40px;color:var(--night-mute)}
.hero-actions{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.hero-foot{display:flex;gap:40px;margin-top:60px;padding-top:26px;border-top:1px solid rgba(255,255,255,.09);max-width:520px}
.hero-foot b{display:block;font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:38px;line-height:1;margin-bottom:8px;color:#f5f5f7}
.hero-foot span{font-size:12.5px;color:var(--night-mute);letter-spacing:.06em}
.chart-hero{position:relative;aspect-ratio:1.08;width:100%}
.chart-hero svg{width:100%;height:100%;overflow:visible}
.ch-grid line{stroke:rgba(255,255,255,.06);stroke-width:1}
.ch-axis{stroke:rgba(255,255,255,.28);stroke-width:1.2}
.ch-curve{fill:none;stroke-width:2.4;stroke-linecap:round;stroke-dasharray:var(--len);stroke-dashoffset:var(--len)}
.ch-curve.draw{animation:draw 2.4s var(--out) forwards}
.ch-curve.d{stroke:#f5f5f7}.ch-curve.s{stroke:#86868b;animation-delay:.35s}
.ch-curve.d2{stroke:#2997ff;stroke-dasharray:6 7;stroke-dashoffset:0;opacity:0;transition:opacity 1s}
@keyframes draw{to{stroke-dashoffset:0}}
.ch-guide{stroke:rgba(41,151,255,.55);stroke-width:1;stroke-dasharray:3 5;opacity:0;transition:opacity .8s}
.ch-dot{fill:#2997ff;opacity:0;transform-box:fill-box;transform-origin:center;transition:opacity .6s}
.ch-halo{fill:rgba(41,151,255,.25);transform-box:fill-box;transform-origin:center;opacity:0}
.ch-on .ch-guide,.ch-on .ch-dot{opacity:1}
.ch-on .ch-halo{animation:halo 2.6s var(--ease) infinite}
@keyframes halo{0%{opacity:.9;transform:scale(.6)}100%{opacity:0;transform:scale(3.4)}}
.ch-label{font-size:13px;fill:var(--night-mute);font-family:var(--sans);letter-spacing:.06em}
.ch-tag{position:absolute;padding:10px 14px;border-radius:14px;background:rgba(24,24,27,.82);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:12px;color:var(--night-mute);opacity:0;transform:translateY(10px);transition:all .9s var(--out)}
.ch-tag b{display:block;font-family:var(--mono);font-size:17px;color:#f5f5f7;font-weight:500;margin-top:2px}
.ch-tag.show{opacity:1;transform:none}
.ch-tag.shift-tag{opacity:0!important;transform:translateY(10px)}
.ch-tag.shift-tag.live{opacity:1!important;transform:none}
.scroll-cue{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);width:1px;height:46px;background:rgba(255,255,255,.12);overflow:hidden}
.scroll-cue::after{content:"";position:absolute;left:0;top:-50%;width:1px;height:50%;background:var(--gold-2);animation:cue 2.2s var(--ease) infinite}
@keyframes cue{to{top:110%}}

/* ---------- 首页：宣言 ---------- */
.statement{padding:170px 0 150px}
.statement p{font-size:clamp(28px,4.2vw,52px);font-weight:700;line-height:1.32;letter-spacing:-.015em}
.statement .w{color:#d2d2d7;transition:color .6s var(--ease)}
.statement .w.on{color:var(--ink)}
.statement .w.g.on{color:var(--gold)}

/* ---------- 首页：课程卡 ---------- */
.course{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-top:70px}
.cc{grid-column:span 2;position:relative;border-radius:var(--r-xl);background:var(--card);padding:34px 32px 30px;min-height:400px;overflow:hidden;
  display:flex;flex-direction:column;border:1px solid rgba(0,0,0,.04);transition:transform .7s var(--out),box-shadow .7s var(--out)}
.cc.wide{grid-column:span 3}
.cc:hover{transform:translateY(-8px);box-shadow:0 40px 70px -40px rgba(0,0,0,.35)}
.cc .no{font-family:var(--sans);font-weight:700;font-size:56px;line-height:.9;color:var(--ink);letter-spacing:-.04em}
.cc .dis{font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--mute);margin:20px 0 8px}
.cc h3{font-size:26px;line-height:1.3;letter-spacing:-.01em}
.cc p{font-size:15px;color:var(--mute);margin-top:10px;line-height:1.65}
.cc .art{margin-top:auto;height:110px;position:relative}
.cc .art svg{position:absolute;right:-6px;bottom:-4px;height:120px;width:auto}
.cc .cc-foot{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-2);font-size:13px}
.cc .st{color:var(--mute)}.cc .st.done{color:var(--ok);font-weight:600}
.cc .go{width:34px;height:34px;border-radius:50%;background:var(--paper-2);display:grid;place-items:center;transition:background .4s,color .4s,transform .4s var(--spring)}
.cc:hover .go{background:var(--ink);color:#fff;transform:rotate(-45deg)}
.cc::after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;opacity:0;transition:opacity .5s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(41,151,255,.13),transparent 45%)}
.cc:hover::after{opacity:1}
.art path,.art line,.art polyline,.art circle,.art rect{vector-effect:non-scaling-stroke}

/* ---------- 首页：故事线 ---------- */
.story{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;margin-top:40px}
.story-l{position:sticky;top:130px;align-self:start}
.timeline{position:relative;padding-left:44px}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-fill{position:absolute;left:11px;top:8px;width:1px;height:0;background:var(--gold);transition:height .2s linear}
.tl-item{position:relative;padding:8px 0 64px}
.tl-item:last-child{padding-bottom:8px}
.tl-item::before{content:"";position:absolute;left:-39px;top:14px;width:13px;height:13px;border-radius:50%;background:var(--paper);border:1px solid var(--line);transition:all .5s var(--out)}
.tl-item.on::before{background:var(--gold);border-color:var(--gold);box-shadow:0 0 0 6px rgba(0,113,227,.14)}
.tl-item .t{font-size:12.5px;letter-spacing:.14em;color:var(--mute);font-weight:600}
.tl-item h4{font-size:24px;margin:6px 0 8px;letter-spacing:-.01em}
.tl-item p{color:var(--ink-2);font-size:16px;line-height:1.75}
.tl-item .tag{display:inline-block;margin-top:12px;font-size:12.5px;padding:4px 12px;border-radius:99px;background:var(--card);border:1px solid var(--line)}

/* ---------- 首页：学习路径 ---------- */
.path{display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:70px;position:relative}
.path::before{content:"";position:absolute;left:8%;right:8%;top:31px;height:1px;background:rgba(255,255,255,.12)}
.ps{text-align:center;padding:0 8px;position:relative}
.ps .c{width:62px;height:62px;border-radius:50%;margin:0 auto 20px;display:grid;place-items:center;background:var(--night-2);border:1px solid rgba(255,255,255,.1);
  font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:24px;color:var(--gold-2);transition:all .6s var(--out)}
.ps:hover .c{background:var(--gold-2);color:var(--night);transform:translateY(-4px)}
.ps h5{font-size:17px;margin-bottom:6px}
.ps p{font-size:13.5px;color:var(--night-mute);line-height:1.6}
.teacher-band{margin-top:80px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tb{border-radius:var(--r-l);background:var(--night-2);border:1px solid rgba(255,255,255,.06);padding:28px}
.tb b{display:block;font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:44px;line-height:1;margin-bottom:12px}
.tb span{font-size:14.5px;color:var(--night-mute);line-height:1.7}

/* ---------- 课时页 ---------- */
.lnav{position:sticky;top:52px;z-index:90;background:rgba(250,249,246,.86);backdrop-filter:saturate(160%) blur(18px);-webkit-backdrop-filter:saturate(160%) blur(18px);border-bottom:1px solid var(--line-2)}
.lnav .wrap{display:flex;align-items:center;gap:22px;height:52px}
.lnav .tt{font-size:15px;font-weight:600;white-space:nowrap}
.lnav .tt small{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:17px;color:var(--ac);margin-right:8px}
.lnav .pills{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.lnav .pills::-webkit-scrollbar{display:none}
.lnav .pills a{font-size:12.5px;padding:5px 12px;border-radius:99px;color:var(--mute);white-space:nowrap;transition:all .35s var(--out)}
.lnav .pills a.on{background:var(--ink);color:#fff}
.lnav .bar{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--ac)}

.l-hero{padding:120px 0 110px;position:relative;overflow:hidden}
.l-hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.l-no{font-family:var(--sans);font-weight:700;font-size:clamp(96px,12vw,168px);line-height:.85;letter-spacing:-.05em;color:var(--ink)}
.l-dis{font-size:13px;letter-spacing:.2em;font-weight:600;color:var(--mute);margin:26px 0 14px}
.l-hero h1{font-size:clamp(34px,3.9vw,56px);line-height:1.1;letter-spacing:-.03em;font-weight:700}
.l-hero .sub{font-size:20px;color:var(--mute);margin-top:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.chip{font-size:13px;padding:6px 14px;border-radius:99px;background:var(--card);border:1px solid var(--line)}
.goals{background:var(--card);border-radius:var(--r-xl);padding:34px 32px;border:1px solid rgba(0,0,0,.04);box-shadow:0 30px 60px -45px rgba(0,0,0,.35)}
.goals h4{font-size:13px;letter-spacing:.18em;color:var(--gold);margin-bottom:18px}
.goals ol{list-style:none;counter-reset:g;display:grid;gap:18px}
.goals li{counter-increment:g;display:grid;grid-template-columns:30px 1fr;gap:10px;font-size:15.5px;line-height:1.65;color:var(--ink-2)}
.goals li::before{content:counter(g,decimal-leading-zero);font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:20px;color:var(--ac);line-height:1.2}
.goals li b{color:var(--ink)}

.sec-head{margin-bottom:56px}
.sec-head .idx{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:18px;color:var(--ac);margin-right:12px}

/* 情境 */
.scene{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.scene blockquote{font-size:clamp(22px,2.5vw,30px);line-height:1.6;font-weight:600;letter-spacing:-.01em;position:relative;padding-left:28px;border-left:2px solid var(--ac)}
.scene blockquote em{font-style:normal;color:var(--ac)}
.scene .q{margin-top:26px;font-size:17px;color:var(--ink-2);display:flex;gap:12px;align-items:flex-start}
.scene .q b{flex:none;font-size:12px;letter-spacing:.14em;color:#fff;background:var(--ac);padding:4px 10px;border-radius:99px;margin-top:2px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fact{background:var(--card);border-radius:20px;padding:22px;border:1px solid rgba(0,0,0,.04)}
.fact b{display:block;font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:34px;line-height:1.05;color:var(--ink)}
.fact span{font-size:13px;color:var(--mute)}

/* 知识讲解 */
.kb{display:grid;grid-template-columns:200px 1fr;gap:50px;padding:56px 0;border-top:1px solid var(--line)}
.kb:first-of-type{border-top:0;padding-top:0}
.kb-side .n{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:44px;line-height:1;color:var(--ac)}
.kb-side h3{font-size:22px;margin-top:10px;line-height:1.35}
.kb-main>p{font-size:17px;line-height:1.95;color:var(--ink-2);margin-bottom:18px}
.kb-main>p b{color:var(--ink)}
.def{background:var(--card);border-radius:20px;padding:24px 26px;margin:6px 0 22px;border:1px solid rgba(0,0,0,.04);position:relative}
.def::before{content:"概念";position:absolute;top:-10px;left:22px;font-size:11.5px;letter-spacing:.14em;font-weight:600;color:var(--ac);background:var(--ac-bg);padding:2px 10px;border-radius:99px}
.def p{font-size:16.5px;line-height:1.9}
.def b{color:var(--ac)}
.formula{margin:8px 0 24px;border-radius:22px;background:var(--night);color:#f5f5f7;padding:28px 30px;position:relative;overflow:hidden}
.formula::after{content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:radial-gradient(closest-side,rgba(41,151,255,.22),transparent)}
.formula .lab{font-size:11.5px;letter-spacing:.2em;color:var(--gold-2);font-weight:600;margin-bottom:12px}
.formula .eq{font-size:clamp(19px,2.2vw,25px);font-weight:600;line-height:1.7;letter-spacing:.01em}
.formula .eq+.eq{margin-top:4px}
.formula .note{font-size:13.5px;color:var(--night-mute);margin-top:10px}
.ktable{width:100%;border-collapse:separate;border-spacing:0;margin:8px 0 24px;font-size:15px;background:var(--card);border-radius:18px;overflow:hidden;border:1px solid var(--line)}
.ktable th{text-align:left;font-size:12.5px;letter-spacing:.06em;color:var(--mute);font-weight:600;padding:14px 18px;background:var(--paper-2);border-bottom:1px solid var(--line)}
.ktable td{padding:14px 18px;border-bottom:1px solid var(--line-2);line-height:1.6;vertical-align:top}
.ktable tr:last-child td{border-bottom:0}
.ktable td:first-child{font-weight:600}
.tip{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;background:var(--ac-bg);border-radius:18px;padding:18px 22px;margin:4px 0 22px;font-size:15.5px;line-height:1.8;color:var(--ink-2)}
.tip::before{content:"易错";font-size:11.5px;font-weight:700;letter-spacing:.12em;color:#fff;background:var(--ac);padding:3px 9px;border-radius:99px;margin-top:3px}
.tip.idea::before{content:"想一想"}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:6px 0 22px}
.mini{background:var(--card);border-radius:18px;padding:22px;border:1px solid rgba(0,0,0,.04)}
.mini h5{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.mini h5 i{width:8px;height:8px;border-radius:50%;background:var(--ac)}
.mini p{font-size:14.5px;color:var(--ink-2);line-height:1.75}

/* 互动演示（深色） */
.demo{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:stretch}
.stage{background:var(--night-2);border:1px solid rgba(255,255,255,.06);border-radius:var(--r-xl);padding:26px;position:relative;min-height:440px;display:flex;flex-direction:column;justify-content:center}
.stage svg{width:100%;height:auto;display:block;overflow:visible}
.ctrl{display:flex;flex-direction:column;gap:14px}
.panel{background:var(--night-2);border:1px solid rgba(255,255,255,.06);border-radius:var(--r-l);padding:22px}
.panel h6{font-size:11.5px;letter-spacing:.18em;color:var(--night-mute);font-weight:600;margin-bottom:14px}
.sl{margin-bottom:16px}.sl:last-child{margin-bottom:0}
.sl label{display:flex;justify-content:space-between;font-size:13.5px;color:#d2d2d7;margin-bottom:10px}
.sl label b{font-family:var(--mono);font-weight:500;color:var(--gold-2)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:2px;outline:none;background:linear-gradient(90deg,var(--gold-2) var(--p,50%),#3a3a3c var(--p,50%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:#f5f5f7;box-shadow:0 2px 8px rgba(0,0,0,.6);cursor:grab;transition:transform .2s}
input[type=range]::-webkit-slider-thumb:active{transform:scale(1.15)}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#f5f5f7;border:0}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.presets button{font-size:13px;padding:7px 13px;border-radius:99px;background:var(--night-3);color:#d2d2d7;border:1px solid rgba(255,255,255,.06);transition:all .3s var(--out)}
.presets button:hover{border-color:var(--gold-2)}
.presets button.on{background:var(--gold-2);color:var(--night);border-color:var(--gold-2)}
.readout{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ro{background:var(--night-3);border-radius:16px;padding:14px 16px}
.ro span{display:block;font-size:12px;color:var(--night-mute)}
.ro b{display:block;font-family:var(--mono);font-size:21px;font-weight:500;margin-top:2px;color:#f5f5f7;transition:color .3s}
.ro.hl b{color:var(--gold-2)}
.ro.neg b{color:#e48f7f}.ro.pos b{color:#9fcfaf}
.demo-note{font-size:14px;color:var(--night-mute);line-height:1.75;margin-top:2px}
.demo-note b{color:#f5f5f7;font-weight:600}
.svg-t{font-family:var(--sans);font-size:12px;fill:var(--night-mute)}
.svg-tb{font-family:var(--mono);font-size:12.5px;fill:#f5f5f7}
.svg-grid{stroke:rgba(255,255,255,.05)}
.svg-ax{stroke:rgba(255,255,255,.28)}

/* 例题 */
.ex{background:var(--card);border-radius:var(--r-xl);border:1px solid rgba(0,0,0,.04);overflow:hidden}
.ex-q{padding:36px 40px;border-bottom:1px solid var(--line-2)}
.ex-q .lab{font-size:12px;letter-spacing:.18em;font-weight:600;color:var(--ac);margin-bottom:12px}
.ex-q p{font-size:18px;line-height:1.9}
.ex-steps{padding:12px 40px 34px}
.es{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;border-bottom:1px dashed var(--line);opacity:.18;filter:blur(3px);transition:opacity .7s var(--out),filter .7s var(--out)}
.es.show{opacity:1;filter:none}
.es:last-child{border-bottom:0}
.es .k{width:36px;height:36px;border-radius:50%;border:1px solid var(--ac);color:var(--ac);display:grid;place-items:center;font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:17px}
.es h5{font-size:16px;margin-bottom:4px}
.es p{font-size:16px;color:var(--ink-2);line-height:1.85}
.es .calc{display:inline-block;font-family:var(--mono);font-size:15px;background:var(--paper-2);padding:6px 12px;border-radius:10px;margin-top:6px;line-height:1.7}
.ex-bar{display:flex;align-items:center;gap:14px;padding:0 40px 34px}
.ex-bar small{color:var(--mute);font-size:13px}

/* 随堂练习 */
.quiz{display:grid;gap:16px}
.qz{background:var(--card);border-radius:var(--r-l);padding:28px 30px;border:1px solid rgba(0,0,0,.04);transition:box-shadow .5s}
.qz .top{display:flex;gap:12px;align-items:baseline;margin-bottom:16px}
.qz .top .n{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:22px;color:var(--ac)}
.qz .top .ty{font-size:11.5px;letter-spacing:.12em;color:var(--mute);border:1px solid var(--line);padding:2px 8px;border-radius:99px;flex:none}
.qz .top p{font-size:17px;line-height:1.75;font-weight:500}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.opt{text-align:left;padding:14px 18px;border-radius:14px;border:1px solid var(--line);font-size:15.5px;line-height:1.5;display:flex;gap:12px;align-items:center;transition:all .3s var(--out)}
.opt i{font-style:normal;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:12.5px;color:var(--mute);flex:none;transition:all .3s}
.opt:hover:not(:disabled){border-color:var(--ink)}
.opt.right{border-color:var(--ok);background:var(--ok-bg)}.opt.right i{background:var(--ok);border-color:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-bg)}.opt.wrong i{background:var(--bad);border-color:var(--bad);color:#fff}
.opt:disabled{cursor:default}
.numrow{display:flex;gap:10px;align-items:center}
.numrow input{flex:1;max-width:260px;font-family:var(--mono);font-size:17px;padding:12px 16px;border-radius:14px;border:1px solid var(--line);outline:none;background:var(--paper);transition:border-color .3s}
.numrow input:focus{border-color:var(--ink)}
.numrow button{padding:12px 22px;border-radius:14px;background:var(--ink);color:#fff;font-size:15px}
.numrow span{color:var(--mute);font-size:14px}
.fb{margin-top:16px;padding:16px 18px;border-radius:14px;font-size:15px;line-height:1.8;display:none}
.fb.show{display:block;animation:fbIn .6s var(--out)}
@keyframes fbIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fb.ok{background:var(--ok-bg);color:#1d5c2e}.fb.no{background:var(--bad-bg);color:#86190f}
.fb b{font-weight:700}
.score{display:flex;align-items:center;gap:28px;margin-top:26px;background:var(--night);color:#f5f5f7;border-radius:var(--r-xl);padding:30px 34px}
.score .ring{width:92px;height:92px;flex:none;position:relative}
.score .ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.score .ring circle{fill:none;stroke-width:7}
.score .ring .bg{stroke:#2c2c2e}.score .ring .fg{stroke:var(--gold-2);stroke-linecap:round;stroke-dasharray:264;stroke-dashoffset:264;transition:stroke-dashoffset 1.2s var(--out)}
.score .ring b{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:30px;font-weight:400}
.score h5{font-size:20px;margin-bottom:4px}
.score p{color:var(--night-mute);font-size:14.5px}
.score .btn{margin-left:auto}

/* 小结 */
.sum{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sm{background:var(--card);border-radius:var(--r-l);padding:28px;border:1px solid rgba(0,0,0,.04)}
.sm .k{font-family:var(--sans);font-weight:600;letter-spacing:-.02em;font-size:30px;color:var(--ac);line-height:1}
.sm h5{font-size:18px;margin:14px 0 8px}
.sm p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.think{margin-top:16px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;background:var(--card);border-radius:var(--r-l);padding:30px 34px;border:1px solid rgba(0,0,0,.04)}
.think .lab{font-size:12px;letter-spacing:.18em;color:var(--gold);font-weight:600;margin-bottom:8px}
.think p{font-size:17px;line-height:1.8}
.next-card{display:flex;flex-direction:column;align-items:flex-end;gap:6px;text-align:right}
.next-card small{color:var(--mute);font-size:12.5px;letter-spacing:.12em}
.next-card b{font-size:20px}

/* 教学设计速览 */
.teach-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:14px}
.tg{background:var(--night-2);border:1px solid rgba(255,255,255,.06);border-radius:var(--r-l);padding:24px}
.tg h6{font-size:11.5px;letter-spacing:.18em;color:var(--gold-2);margin-bottom:10px}
.tg p{font-size:15px;line-height:1.8;color:#d2d2d7}
.flow{background:var(--night-2);border:1px solid rgba(255,255,255,.06);border-radius:var(--r-l);padding:10px 26px}
.fl{display:grid;grid-template-columns:120px 70px 1fr 1fr;gap:20px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:14.5px;line-height:1.75;color:#d2d2d7}
.fl:last-child{border-bottom:0}
.fl.h{font-size:11.5px;letter-spacing:.14em;color:var(--night-mute);font-weight:600;padding:14px 0}
.fl b{color:#f5f5f7;font-size:15px}
.fl .t{font-family:var(--mono);color:var(--gold-2)}

/* 页脚 */
.foot{background:var(--paper-2);padding:44px 0 56px;font-size:12.5px;color:var(--mute);line-height:1.9}
.foot .row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-bottom:18px;margin-bottom:18px;border-bottom:1px solid var(--line)}
.foot a:hover{color:var(--ink)}
.foot .ls{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .hero .wrap,.l-hero .wrap,.scene,.demo,.story{grid-template-columns:1fr}
  .hero .wrap{gap:30px}
  .chart-hero{max-width:560px}
  .course{grid-template-columns:1fr 1fr}.cc,.cc.wide{grid-column:span 1}
  .story-l{position:static}
  .kb{grid-template-columns:1fr;gap:16px}
  .sum,.teach-grid,.teacher-band{grid-template-columns:1fr}
  .path{grid-template-columns:repeat(3,1fr);row-gap:40px}.path::before{display:none}
  .fl{grid-template-columns:1fr;gap:4px}.fl.h{display:none}
  .nav-links{display:none}.nav-cta{margin-left:auto}
  .lnav .tt{display:none}.lnav .pills{margin-left:0}
}
@media (max-width:640px){
  .sec{padding:92px 0}
  .course{grid-template-columns:1fr}
  .opts,.grid2,.facts{grid-template-columns:1fr}
  .ex-q,.ex-steps{padding-left:22px;padding-right:22px}.ex-bar{padding:0 22px 26px}
  .qz{padding:22px 20px}
  .score{flex-wrap:wrap}.score .btn{margin-left:0}
  .think{grid-template-columns:1fr}.next-card{align-items:flex-start;text-align:left}
  .readout{grid-template-columns:1fr 1fr}
  .stage{padding:16px;min-height:0}
  .hero-foot{gap:24px}
  .svg-t{font-size:17px}.svg-tb{font-size:17px}
  #tagP{left:0!important;top:36%!important}.ch-tag{padding:7px 10px;font-size:11px}.ch-tag b{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .rv,.mask-line>span{opacity:1;transform:none;filter:none}
  .ch-curve{stroke-dashoffset:0}
}
@media print{
  .nav,.lnav,.foot,.ex-bar,#demo{display:none!important}
  .es{opacity:1;filter:none}
  .rv{opacity:1;transform:none;filter:none}
}

/* 白底分区中的卡片用 #f5f5f7，浅灰分区中用白色 */
.sec:not(.alt):not(.night) :is(.def,.mini,.fact,.qz,.sm,.think,.goals,.ex){background:var(--tint);border-color:transparent;box-shadow:none}
.sec:not(.alt):not(.night) .ktable{background:var(--tint);border-color:transparent}
.sec:not(.alt):not(.night) .ktable th{background:#ebebf0}
.sec:not(.alt):not(.night) .ktable td{border-color:#e3e3e8}
.sec:not(.alt):not(.night) .numrow input{background:#fff}
.l-hero .goals{background:var(--tint);box-shadow:none;border-color:transparent}
.def::before{background:#fff}

/* ==========================================================
   知识讲解动画（kfx）
   ========================================================== */
.kfx{margin:10px 0 26px;border-radius:22px;background:#fff;border:1px solid var(--line-2);padding:20px 24px 18px;overflow:hidden}
.sec:not(.alt):not(.night) .kfx{background:#fff;border-color:var(--line-2);box-shadow:0 18px 40px -32px rgba(0,0,0,.25)}
.kfx-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.kfx-h span{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--ac)}
.kfx-re{font-size:12.5px;color:var(--mute);padding:5px 12px;border-radius:99px;background:var(--tint);transition:all .3s}
.kfx-re:hover{background:var(--ink);color:#fff}
.kfx-b{min-width:0}
.kfx-b svg{width:100%;height:auto;display:block;overflow:visible}
.kfx-cap{min-height:48px;margin-top:12px;font-size:15px;line-height:1.7;color:var(--ink-2);transition:opacity .4s}
.kfx-cap b{color:var(--ink)}
.kt{font-size:12px;fill:var(--mute);font-family:var(--sans)}
.kv{font-size:13px;fill:var(--ink);font-family:var(--sans);font-weight:600}
.kpop{opacity:0;transform:scale(.6);transform-box:fill-box;transform-origin:center;transition:opacity .5s var(--out),transform .6s var(--spring)}
.kpop.on{opacity:1;transform:none}
.kglow{animation:kglow 2s var(--ease) infinite}
@keyframes kglow{0%,100%{filter:drop-shadow(0 0 0 rgba(0,113,227,0))}50%{filter:drop-shadow(0 0 8px rgba(0,113,227,.8))}}
/* 01 两种变动 */
.kgrid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.kgrid2>div{background:var(--tint);border-radius:16px;padding:14px 14px 10px}
.kgrid2 h6{font-size:15px;margin-bottom:4px}
.kgrid2 p{font-size:13px;color:var(--mute);margin-top:4px}.kgrid2 p b{color:var(--ac)}
.kslide,.kshift{transform-box:view-box}
.loop .kslide{animation:kslide 2.6s ease-in-out infinite alternate}
.loop .kshift{animation:kshift 2.6s ease-in-out infinite alternate}
@keyframes kslide{from{transform:translate(-62px,-48px)}to{transform:translate(62px,48px)}}
@keyframes kshift{from{transform:translateX(0)}to{transform:translateX(34px)}}
/* 02 成本性态 */
.kq{font-size:14px;color:var(--mute);margin-bottom:10px}.kq b{font-size:22px;color:var(--ink);font-variant-numeric:tabular-nums;margin:0 4px}
.kgrid4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.kbar{background:var(--tint);border-radius:16px;padding:14px;text-align:center}
.kb-track{height:120px;display:flex;align-items:flex-end;justify-content:center;margin-bottom:10px}
.kb-track i{width:38px;border-radius:8px 8px 3px 3px;background:var(--ac);display:block}
.kbar:nth-child(2) .kb-track i,.kbar:nth-child(4) .kb-track i{background:#5ac8fa}
.kbar b{display:block;font-size:17px;font-variant-numeric:tabular-nums}
.kbar span{display:block;font-size:13px;margin-top:2px}.kbar small{font-size:12px;color:var(--mute)}
/* 02 填坑 */
.kpit{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;align-items:center}
.kpit-r{display:grid;gap:10px}
.kpit-r div{background:var(--tint);border-radius:14px;padding:12px 16px}
.kpit-r span{display:block;font-size:12.5px;color:var(--mute)}
.kpit-r b{font-size:24px;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
/* 02 安全边际 */
.ktrack{position:relative;height:38px;border-radius:12px;background:var(--tint);display:flex;margin:6px 0 34px}
.ktrack .seg{height:100%;display:block}.seg.g{background:#c7c7cc;border-radius:12px 0 0 12px}.seg.b{background:var(--ac)}
.ktrack .mk{position:absolute;top:44px;transform:translateX(-50%);font-size:12px;color:var(--mute);white-space:nowrap;opacity:0;transition:opacity .4s}
.kscale{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:4px;margin-top:6px}
.kscale span{text-align:center;font-size:13px;padding:10px 4px;border-radius:10px;background:var(--tint);color:var(--mute);transition:all .4s var(--out)}
.kscale span small{display:block;font-size:11px}
.kscale span.on{background:var(--ac);color:#fff}
.kscale em{position:absolute;top:-10px;width:2px;height:calc(100% + 20px);background:var(--ink);transform:translateX(-1px)}
.kbig{display:flex;align-items:baseline;gap:10px;margin-top:16px}
.kbig b{font-size:40px;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.kbig span{color:var(--mute);font-size:14px}
/* 03 要素归位 */
.kgrp{position:relative;height:230px}
.kgrp .gl{position:absolute;left:2%;font-size:12px;color:var(--mute);letter-spacing:.06em;opacity:0;transition:opacity .6s}
.kgrp .gl.on{opacity:1}
.kgrp .tile{position:absolute;width:22%;height:66px;border-radius:16px;background:var(--tint);display:grid;place-items:center;font-size:clamp(13px,1.6vw,17px);font-weight:600;
  transition:left 1s var(--out),top 1s var(--out),transform 1s var(--out),background .6s,color .6s}
.kgrp .tile.home{background:var(--ink);color:#fff}
.kgrp .tile.t3.home,.kgrp .tile.t4.home,.kgrp .tile.t5.home{background:var(--ac)}
.kgrp .op{position:absolute;width:9%;height:66px;display:grid;place-items:center;font-size:26px;font-weight:600;opacity:0;transform:scale(.4);transition:opacity .4s,transform .5s var(--spring)}
.kgrp .op.on{opacity:1;transform:none}
/* 03 等式积木 */
.kstk{display:grid;grid-template-columns:minmax(0,1fr) 60px minmax(0,1fr);align-items:end;gap:10px;height:280px}
.kstk .col{display:flex;flex-direction:column;align-items:center;height:100%}
.kstk .col>span{font-size:13px;color:var(--mute);margin-top:8px}
.kstk .tot{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;margin-bottom:6px;min-height:28px}
.kstk .pile{flex:1;width:min(100%,220px);display:flex;flex-direction:column-reverse;justify-content:flex-start;gap:3px}
.kstk .blk{border-radius:10px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;transition:height .9s var(--out),background .6s;font-size:13px;line-height:1.3}
.kstk .blk b{font-variant-numeric:tabular-nums}
.kstk .eq{font-size:34px;font-weight:600;text-align:center;align-self:center}
.kstk .eq.pulse{animation:eqp .9s var(--spring)}
@keyframes eqp{40%{transform:scale(1.5);color:var(--ac)}}
/* 04 价值链 */
.kchain{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:46px}
.kchain .nd{background:var(--tint);border-radius:16px;padding:14px;text-align:center;transition:background .5s,color .5s}
.kchain .nd b{display:block;font-size:15px}
.kchain .nd span{display:block;font-size:12.5px;color:var(--mute);margin-top:4px;font-variant-numeric:tabular-nums}
.kchain .nd.on{background:var(--ink);color:#fff}.kchain .nd.on span{color:#d2d2d7}.kchain .nd.on .tx{color:#64d2ff}
.kchain .tok{position:absolute;top:0;transform:translateX(-50%);width:36px;height:36px;border-radius:50%;background:var(--ac);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:600;
  transition:left .7s var(--out);box-shadow:0 6px 16px -6px rgba(0,113,227,.7)}
.ktreas{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;margin-top:20px;font-size:13px;color:var(--mute)}
.ktreas .tbar{height:16px;border-radius:8px;background:var(--tint);display:flex;overflow:hidden}
.ktreas .tbar i{display:block;height:100%;transition:width .7s var(--out)}
.ktreas b{font-size:20px;color:var(--ink);font-variant-numeric:tabular-nums}
/* 04 价税分离 */
.krow{display:grid;grid-template-columns:72px 1fr;gap:14px;align-items:center;margin-bottom:12px}
.krow .rl{font-size:13px;color:var(--mute)}
.kbarH{height:46px;border-radius:12px;background:var(--tint);display:flex;overflow:hidden}
.kbarH.sm{width:11.5%;min-width:150px}
.kbarH i{flex:none;display:grid;place-items:center;font-style:normal;font-size:13px;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;width:0;transition:width .9s var(--out)}
.kbarH i.ink{background:var(--ink)}.kbarH i.blue{background:var(--ac)}.kbarH i.org{background:#c45500}
.kbarH i.hatch{background:repeating-linear-gradient(45deg,#e8e8ed 0 6px,#d2d2d7 6px 12px);color:var(--mute)}
/* 05 时间轴 */
.ktime{position:relative;height:150px}
.ktime .axis{position:absolute;left:8%;right:8%;top:86px;height:2px;background:var(--line)}
.ktime .tk{position:absolute;top:78px;transform:translateX(-50%);text-align:center;width:120px}
.ktime .tk i{display:block;width:16px;height:16px;border-radius:50%;margin:0 auto;background:#fff;border:2px solid var(--line);transition:all .4s}
.ktime .tk.on i{background:var(--ac);border-color:var(--ac)}
.ktime .tk span{display:block;font-size:12.5px;color:var(--mute);margin-top:8px}
.ktime .tk b{display:block;font-size:14px;font-variant-numeric:tabular-nums;margin-top:2px}
.ktime .coin{position:absolute;top:10px;transform:translateX(-50%);padding:9px 16px;border-radius:99px;background:var(--ink);color:#fff;font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;
  transition:left .9s var(--out);white-space:nowrap}
.ktime .coin.org{background:var(--ac)}
.kcmp{display:grid;gap:10px;margin-top:6px}
.kcmp>div{display:grid;grid-template-columns:120px 1fr 90px;gap:12px;align-items:center;font-size:13px;color:var(--mute)}
.kcmp .bar{height:14px;border-radius:7px;background:var(--tint);overflow:hidden}.kcmp .bar i{display:block;height:100%;width:0;border-radius:7px;transition:width 1s var(--out)}
.kcmp b{color:var(--ink);font-size:15px;font-variant-numeric:tabular-nums;text-align:right}
/* 05 单利复利柱 */
.kyrs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;height:230px;align-items:end}
.kyrs .yr{display:flex;flex-direction:column;align-items:center;height:100%}
.kyrs .pair{flex:1;display:flex;gap:6px;align-items:flex-end;width:100%;justify-content:center;padding-top:24px}
.kyrs .cl{width:min(34px,40%);height:100%;display:flex;flex-direction:column-reverse;position:relative}
.kyrs .cl::before{content:attr(data-v);position:absolute;left:50%;transform:translateX(-50%);font-size:10.5px;color:var(--mute);white-space:nowrap;bottom:calc(var(--h,0%) + 4px)}
.kyrs .cl i{display:block;width:100%;height:0;transition:height .8s var(--out)}
.kyrs .cl .p{background:#c7c7cc;border-radius:0 0 4px 4px}.kyrs .cl .i{background:var(--ac)}.kyrs .cl .ii{background:#7d3cd6;border-radius:4px 4px 0 0}
.kyrs .cl.s .i{border-radius:4px 4px 0 0}
.kyrs .yr>span{font-size:12px;color:var(--mute);margin-top:8px}
.klegend{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:12px;color:var(--mute);margin-top:12px}
.klegend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;vertical-align:-1px}
.klegend i.p{background:#c7c7cc}.klegend i.i{background:var(--ac)}.klegend i.ii{background:#7d3cd6}
@media (max-width:640px){
  .kfx{padding:16px 14px}
  .kgrid2,.kpit{grid-template-columns:1fr}
  .kgrid4{grid-template-columns:repeat(2,1fr)}
  .kchain{grid-template-columns:repeat(2,1fr)}.kchain .tok{display:none}
  .kscale span{font-size:11px;padding:8px 2px}.kscale span small{font-size:9.5px}
  .kstk{grid-template-columns:minmax(0,1fr) 30px minmax(0,1fr);height:250px}.kstk .tot{font-size:16px}.kstk .col>span{font-size:11.5px;text-align:center}.kstk .blk{font-size:11.5px}.kstk .eq{font-size:24px}
  .kgrp .tile{height:54px;font-size:12.5px}.kgrp .op{height:54px;font-size:20px}
  .ktime .coin{left:50%!important}
  .ktime .tk{width:80px}.ktime .tk b{font-size:12px}.ktime .coin{font-size:13px;padding:7px 12px}
  .kcmp>div{grid-template-columns:90px 1fr 76px}
  .kyrs .cl::before{display:none}
}