/* =========================================================
   智码 GLM Tokens — editorial / paper style
   ========================================================= */
:root{
  --paper:#faf7f5;
  --paper-2:#f4efec;
  --ink:#000;
  --ink-2:#213547;
  --ink-3:#8b8b8b;
  --line:#000;
  --line-soft:rgba(60,60,60,.12);
  --line-hair:rgba(0,0,0,.07);
  --sans:'Inter','MiSans',-apple-system,'PingFang SC','Noto Sans SC',sans-serif;
  --serif:'Noto Serif SC','Songti SC',Georgia,serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --wrap:1200px;
  --pad:6vw;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--paper);color:var(--ink-2);
  font-family:var(--serif);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
h1,h2,h3,h4{font-family:var(--sans);color:var(--ink);font-weight:700;letter-spacing:.02em}
.ink{color:var(--ink)}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}

/* 背景竖网格线 */
.grid-rules{position:fixed;inset:0;z-index:0;pointer-events:none;
  max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad);
  display:grid;grid-template-columns:repeat(4,1fr)}
.grid-rules i{border-left:1px solid var(--line-hair)}
.grid-rules i:last-child{border-right:1px solid var(--line-hair)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--sans);
  font-size:.9rem;font-weight:600;padding:.62rem 1.15rem;border-radius:8px;
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  transition:background .22s cubic-bezier(.4,0,.2,1),color .22s cubic-bezier(.4,0,.2,1),transform .22s}
.btn:hover{background:transparent;color:var(--ink);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--lg{font-size:.98rem;padding:.82rem 1.5rem}
.btn::after{content:"→";font-family:var(--sans);transition:transform .22s}
.btn:hover::after{transform:translateX(3px)}
.lnk{font-family:var(--sans);font-size:.88rem;color:var(--ink-2);
  border-bottom:1px solid var(--line-soft);transition:border-color .2s,color .2s}
.lnk:hover{color:var(--ink);border-color:var(--ink)}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(250,247,245,.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .3s}
.nav.stuck{border-bottom-color:var(--line-soft)}
.nav__in{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad);
  height:64px;display:flex;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;gap:.6rem;flex:none}
.brand__logo{width:28px;height:28px;object-fit:contain}
.brand__txt{font-family:var(--sans);font-size:1rem;font-weight:700;color:var(--ink);letter-spacing:0}
.brand__txt em{font-style:normal;font-weight:500;color:var(--ink-3);font-size:.86rem}
.nav__links{display:flex;gap:1.6rem;margin-left:auto;font-family:var(--sans);font-size:.9rem}
.nav__links a{position:relative;color:var(--ink-2);transition:color .2s}
.nav__links a:hover{color:var(--ink)}
.nav__links a::after{content:"";position:absolute;left:0;right:100%;bottom:-4px;
  height:1px;background:var(--ink);transition:right .28s cubic-bezier(.4,0,.2,1)}
.nav__links a:hover::after{right:0}
.nav__act{display:flex;align-items:center;gap:1rem;flex:none}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__burger span{width:22px;height:1.5px;background:var(--ink);transition:.3s}

/* ---------- HERO ---------- */
.hero{position:relative;z-index:1;padding:clamp(44px,6vw,76px) 0 clamp(40px,5vw,70px);overflow:hidden}
.marquee{position:absolute;inset:auto 0 auto 0;top:clamp(30px,5vw,64px);
  pointer-events:none;overflow:hidden;opacity:.05;user-select:none}
.marquee__row{display:flex;white-space:nowrap;font-family:var(--sans);
  font-size:clamp(64px,11vw,150px);font-weight:800;color:var(--ink);
  letter-spacing:.22em;animation:mq 46s linear infinite}
.marquee__row span{padding-right:.22em}
@keyframes mq{to{transform:translateX(-50%)}}

.hero__in{position:relative}
.kicker{font-family:var(--sans);font-size:.82rem;font-weight:500;color:var(--ink-2);
  display:inline-flex;align-items:center;gap:.5rem;
  border:1px solid var(--line);border-radius:100px;padding:.32rem .85rem;margin-bottom:2rem}
.kicker .dot{width:6px;height:6px;border-radius:50%;background:#1f9d55;
  animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

.hero__h1{font-size:clamp(2.7rem,7.6vw,6rem);line-height:1.18;font-weight:700;
  letter-spacing:.02em;margin-bottom:2.6rem}
/* 品牌名红色呼吸倒影 */
.brandline{position:relative;display:inline-block}
.brandline::after{
  content:attr(data-txt);
  position:absolute;left:0;top:100%;
  transform:scaleY(-1);transform-origin:top;
  color:#c8102e;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.55),transparent 72%);
  pointer-events:none;user-select:none;white-space:nowrap;
  animation:reflBreathe 3.4s ease-in-out infinite}
@keyframes reflBreathe{
  0%,100%{opacity:.32;filter:blur(.5px)}
  50%    {opacity:.80;filter:blur(0)}
}
@media(prefers-reduced-motion:reduce){ .brandline::after{animation:none;opacity:.42} }

.hero__sub{font-size:clamp(1rem,1.5vw,1.18rem);color:var(--ink-2);max-width:44rem;margin-bottom:2.4rem}
.tw{font-family:var(--sans);font-weight:700;color:var(--ink)}
.caret{display:inline-block;width:2px;height:1em;background:var(--ink);
  vertical-align:-.15em;margin:0 .28em 0 2px;animation:blink 1.05s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.hero__act{display:flex;gap:.8rem;flex-wrap:wrap}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
  gap:clamp(2rem,4vw,3.6rem);align-items:center}
.hero__copy{order:1}
.term{order:2}
.kicker__logo{width:22px;height:22px;object-fit:contain;margin-left:.2rem}

/* ---------- 纸感终端 ---------- */
.term{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.term__bar{display:flex;align-items:center;gap:.7rem;padding:.55rem .9rem;
  background:var(--paper-2);border-bottom:1px solid var(--line-soft)}
.term__dots{display:flex;gap:5px}
.term__dots i{width:8px;height:8px;border-radius:50%;border:1px solid var(--ink);opacity:.5}
.term__title{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);letter-spacing:.03em}
.term__body{position:relative;height:clamp(330px,36vw,450px)}
.term__out{position:absolute;inset:0;margin:0;padding:1.1rem 1.2rem;
  font-family:var(--mono);font-size:.76rem;line-height:1.85;color:var(--ink-2);
  white-space:pre-wrap;word-break:break-word;overflow:hidden;
  transition:opacity .5s ease}
.term__out.hide{opacity:0}
.t-cmd{color:var(--ink);font-weight:500}
.t-dim{color:var(--ink-3)}
.t-ok{color:#0f766e}
.t-cur{color:var(--ink)}

/* ---------- 地球舞台 ---------- */
.stage{position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:.9rem;
  opacity:0;pointer-events:none;transition:opacity .7s ease}
.stage.show{opacity:1}
.globe{width:min(82%,300px);height:auto;overflow:visible}
.globe [class^="g-"]{stroke:var(--ink);stroke-width:1.1;fill:none;vector-effect:non-scaling-stroke}
.g-rim{stroke-width:1.4}
.g-mer,.g-lat{opacity:.26}
.g-spin{transform-origin:120px 120px;animation:spinY 14s linear infinite}
@keyframes spinY{
  0%,100%{transform:scaleX(1)}
  25%{transform:scaleX(.08)}
  50%{transform:scaleX(-1)}
  75%{transform:scaleX(.08)}
}
.g-arc{stroke-width:1.5;stroke-dasharray:200;stroke-dashoffset:200;
  stroke-linecap:round;marker-end:url(#ah)}
.stage.show .g-arc{animation:draw 1.5s .35s cubic-bezier(.4,0,.2,1) forwards,
  flow 2.6s 1.9s linear infinite}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes flow{0%{stroke-dasharray:14 8;stroke-dashoffset:0}
  100%{stroke-dasharray:14 8;stroke-dashoffset:-44}}
.g-pin circle{fill:var(--ink);stroke:none}
.g-pin text{font-family:var(--mono);font-size:9px;fill:var(--ink-3);stroke:none;letter-spacing:.06em}
.g-pin{opacity:0}
.stage.show .g-pin--cn{animation:pin .5s .25s ease forwards}
.stage.show .g-pin--us{animation:pin .5s 1.5s ease forwards}
@keyframes pin{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.stage__cap{font-family:var(--sans);font-size:clamp(1rem,1.6vw,1.32rem);font-weight:700;
  color:var(--ink);letter-spacing:.04em;opacity:0}
.stage.show .stage__cap{animation:capIn .7s 2.1s cubic-bezier(.4,0,.2,1) forwards}
@keyframes capIn{from{opacity:0;transform:translateY(6px);letter-spacing:.16em}
  to{opacity:1;transform:none;letter-spacing:.04em}}

/* ---------- STATS ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);margin-top:clamp(46px,6vw,84px)}
.stat{padding:1.6rem 1.2rem 0;border-left:1px solid var(--line-soft)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-family:var(--sans);font-size:clamp(1.6rem,2.8vw,2.4rem);
  font-weight:700;color:var(--ink);line-height:1.1}
.stat span{font-size:.82rem;color:var(--ink-3)}

/* ---------- SHOWCASE 横排 ---------- */
.band{position:relative;z-index:1;padding:clamp(30px,4vw,50px) 0}
.show{display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.show__it{display:flex;align-items:center;gap:.85rem;padding:1.25rem 1.4rem;
  border-left:1px solid var(--line-soft);transition:background .25s}
.show__it:nth-child(3n+1){border-left:0}
.show__it:nth-child(n+4){border-top:1px solid var(--line-soft)}
.show__it:hover{background:var(--paper-2)}
.show__it img{width:26px;height:26px;object-fit:contain;flex:none}
.show__n{font-family:var(--sans);font-size:.94rem;font-weight:600;color:var(--ink);line-height:1.3}
.show__s{font-size:.76rem;color:var(--ink-3);font-family:var(--mono)}

/* ---------- SECTION ---------- */
.sec{position:relative;z-index:1;padding:clamp(64px,9vw,132px) 0}
.sec--line{border-top:1px solid var(--line-soft)}
.sec__hd{margin-bottom:clamp(38px,5vw,64px)}
.sec__hd h2{font-size:clamp(1.9rem,4.6vw,4rem);line-height:1.2;font-weight:700;letter-spacing:.01em}
.sec__lead{margin-top:1.1rem;font-size:clamp(.98rem,1.3vw,1.12rem);color:var(--ink-2);max-width:40rem}

/* ---------- 编号行（features / models 共用） ---------- */
.rows{border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:auto 1fr auto;gap:1.6rem;align-items:baseline;
  padding:1.7rem 0;border-bottom:1px solid var(--line-soft);
  transition:padding-left .3s cubic-bezier(.4,0,.2,1),background .3s}
.row:hover{padding-left:.9rem;background:var(--paper-2)}
.row__n{font-family:var(--mono);font-size:1.05rem;color:var(--ink-3);flex:none;line-height:1.6}
.row__b{min-width:0}
.row__t{font-family:var(--sans);font-size:clamp(1.05rem,1.7vw,1.4rem);font-weight:600;
  color:var(--ink);line-height:1.4;margin-bottom:.4rem}
.row__t em{font-style:normal;font-family:var(--mono);font-size:.78rem;color:var(--ink-3);margin-left:.6rem}
.row__d{font-size:.95rem;color:var(--ink-2);max-width:48rem}
.row__d b{font-weight:600;color:var(--ink)}
.row__tags{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:.6rem}
.row__tags span{font-family:var(--mono);font-size:.7rem;color:var(--ink-3);
  border:1px solid var(--line-soft);border-radius:3px;padding:.12rem .45rem}
.row__x{font-family:var(--sans);font-size:1.05rem;color:var(--ink-3);flex:none;
  transition:transform .3s cubic-bezier(.4,0,.2,1),color .3s}
.row:hover .row__x{transform:translateX(5px);color:var(--ink)}

/* ---------- PRICING ---------- */
.price{border-top:1px solid var(--line)}
.price__r{display:grid;grid-template-columns:auto 1fr auto auto;gap:1.4rem;align-items:center;
  padding:1.5rem 0;border-bottom:1px solid var(--line-soft);transition:padding-left .3s,background .3s}
.price__r:hover{padding-left:.9rem;background:var(--paper-2)}
.price__logo{width:34px;height:34px;display:grid;place-items:center;flex:none;
  border:1px solid var(--line-soft);border-radius:8px;background:#fff}
.price__logo img{width:20px;height:20px;object-fit:contain}
.price__n{font-family:var(--sans);font-size:1.05rem;font-weight:600;color:var(--ink)}
.price__s{font-size:.8rem;color:var(--ink-3);font-family:var(--mono)}
.price__d{font-size:.82rem;color:var(--ink-3);text-align:right}
.price__x{font-family:var(--sans);font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;
  color:var(--ink);line-height:1;min-width:4.6rem;text-align:right}
.price__x small{font-size:.7rem;font-weight:500;color:var(--ink-3);margin-left:.15rem}
.notes{list-style:none;display:flex;flex-wrap:wrap;gap:1.6rem;margin-top:2rem}
.notes li{position:relative;padding-left:1.1rem;font-size:.88rem;color:var(--ink-2)}
.notes li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;
  background:var(--ink);border-radius:50%}

/* ---------- TOOLS ---------- */
.tools{display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.tool{display:flex;align-items:center;gap:.85rem;padding:1.5rem;
  border-left:1px solid var(--line-soft);transition:background .25s}
.tool:nth-child(3n+1){border-left:0}
.tool:nth-child(n+4){border-top:1px solid var(--line-soft)}
.tool:hover{background:var(--paper-2)}
.tool img{width:26px;height:26px;object-fit:contain;flex:none}
.tool__n{font-family:var(--sans);font-size:.96rem;font-weight:600;color:var(--ink)}
.tool__s{font-size:.76rem;color:var(--ink-3)}
.more{margin-top:1.4rem;font-size:.86rem;color:var(--ink-3)}

/* ---------- FORMATS tabs ---------- */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--line);margin-bottom:0}
.tab{font-family:var(--sans);font-size:.92rem;font-weight:600;color:var(--ink-3);
  background:none;border:0;cursor:pointer;padding:.9rem 1.3rem;position:relative;
  transition:color .22s}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{color:var(--ink)}
.tab::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--ink);transform:scaleX(0);transition:transform .3s cubic-bezier(.4,0,.2,1)}
.tab[aria-selected="true"]::after{transform:scaleX(1)}
.tab em{font-style:normal;font-family:var(--mono);font-size:.7rem;color:var(--ink-3);margin-left:.4rem}
.tabpanes{border:1px solid var(--line);border-top:0;border-radius:0 0 12px 12px;overflow:hidden}
.pane{display:none;padding:1.6rem 1.7rem}
.pane.on{display:block;animation:fadeUp .34s cubic-bezier(.4,0,.2,1)}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.pane pre{overflow-x:auto}
.pane code{font-family:var(--mono);font-size:.82rem;line-height:1.85;color:var(--ink-2);white-space:pre}
.c-k{color:#b45309;font-weight:600}.c-p{color:var(--ink)}.c-a{color:#6d28d9}
.c-s{color:#0f766e}.c-n{color:#b45309}

/* ---------- CODING PLAN ---------- */
.plan{display:grid;grid-template-columns:1.15fr .85fr;gap:0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.plan__l{padding:clamp(1.6rem,3vw,2.6rem)}
.plan__lead{font-size:1.02rem;color:var(--ink-2);margin-bottom:1.5rem;max-width:32rem}
.ticks{list-style:none;margin-bottom:1.9rem}
.ticks li{position:relative;padding-left:1.5rem;font-size:.94rem;color:var(--ink-2);margin-bottom:.6rem}
.ticks li::before{content:"✓";position:absolute;left:0;top:0;font-family:var(--sans);
  font-size:.82rem;font-weight:700;color:var(--ink)}
.plan__r{padding:clamp(1.6rem,3vw,2.6rem);border-left:1px solid var(--line-soft);background:var(--paper-2)}
.plan__lab{display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3)}
.plan__val{font-family:var(--sans);font-size:clamp(2.2rem,4vw,3.2rem);font-weight:700;
  color:var(--ink);line-height:1;margin:.5rem 0}
.plan__val small{font-size:.9rem;font-weight:500;color:var(--ink-3);margin-left:.3rem}
.plan__note{font-size:.84rem;color:var(--ink-3)}
.plan__r hr{border:0;border-top:1px solid var(--line-soft);margin:1.6rem 0}
.plan__models{font-family:var(--sans);font-size:.96rem;color:var(--ink);line-height:1.7;margin-top:.35rem}

/* ---------- CTA ---------- */
.cta{position:relative;z-index:1;border-top:1px solid var(--line-soft);
  padding:clamp(64px,9vw,124px) 0}
.cta__in{text-align:center}
.cta__in h2{font-size:clamp(1.9rem,4.8vw,4rem);line-height:1.2}
.cta__in p{margin:1.2rem auto 2.2rem;font-size:1.05rem;color:var(--ink-2);max-width:34rem}
.cta__act{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}

/* ---------- FOOTER ---------- */
.ft{position:relative;z-index:1;border-top:1px solid var(--line);
  background:var(--paper-2);padding:clamp(44px,5vw,68px) 0 1.4rem}
.ft__in{display:grid;grid-template-columns:1.3fr 2fr;gap:2.6rem}
.ft__brand p{font-size:.9rem;color:var(--ink-3);margin-top:1rem;max-width:24rem}
.ft__ep code{font-family:var(--mono);font-size:.8rem;color:var(--ink-2)}
.ft__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.ft__cols h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);margin-bottom:.9rem;font-weight:400}
.ft__cols a{display:block;font-size:.9rem;color:var(--ink-2);padding:.26rem 0;transition:color .2s}
.ft__cols a:hover{color:var(--ink)}
.ft__bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;
  margin-top:2.6rem;padding-top:1.3rem;border-top:1px solid var(--line-soft);
  font-size:.8rem;color:var(--ink-3)}

/* ---------- 滚动进场 ---------- */
[data-rv]{opacity:0;transform:translateY(16px);
  transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
[data-rv].in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  [data-rv]{opacity:1;transform:none;transition:none}
  .marquee__row{animation:none}
}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero__grid{grid-template-columns:1fr;gap:2.2rem}
  .plan{grid-template-columns:1fr}
  .plan__r{border-left:0;border-top:1px solid var(--line-soft)}
  .ft__in{grid-template-columns:1fr}
  .show,.tools{grid-template-columns:repeat(2,1fr)}
  .show__it:nth-child(3n+1),.tool:nth-child(3n+1){border-left:1px solid var(--line-soft)}
  .show__it:nth-child(odd),.tool:nth-child(odd){border-left:0}
  .show__it:nth-child(n+3),.tool:nth-child(n+3){border-top:1px solid var(--line-soft)}
}
@media(max-width:760px){
  .nav__links,.nav__act .lnk{display:none}
  .nav__burger{display:flex}
  .nav.open .nav__links{display:flex;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;gap:.9rem;background:var(--paper);padding:1.2rem var(--pad);
    border-bottom:1px solid var(--line-soft)}
  .grid-rules{display:none}
  .stats{grid-template-columns:repeat(2,1fr);gap:0}
  .stat{border-left:0;padding:1.3rem 0 0}
  .stat:nth-child(even){padding-left:1.2rem;border-left:1px solid var(--line-soft)}
  .row{grid-template-columns:auto 1fr;gap:1rem}
  .row__x{display:none}
  .price__r{grid-template-columns:auto 1fr auto;gap:.9rem}
  .price__d{display:none}
  .show,.tools{grid-template-columns:1fr}
  .show__it,.tool{border-left:0}
  .show__it:not(:first-child),.tool:not(:first-child){border-top:1px solid var(--line-soft)}
  .ft__cols{grid-template-columns:1fr 1fr}
}