/* ============================================================
   鸿源科创 · 官方首页
   设计基调：深墨底 + 品牌渐变（琥珀·橙·青·蓝）+ 编辑式排版
   面向家长，克制、可信、不幼稚
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --ink:#07080C;
  --ink-2:#0B0D13;
  --ink-3:#11141C;
  --paper:#F4F1EA;
  --paper-2:#EAE5DA;

  --text:#EEF0F4;
  --text-dim:#9AA1AE;
  --text-dark:#15171C;
  --text-dark-dim:#5C616B;

  --amber:#F7A82B;
  --orange:#F4703F;
  --cyan:#16B4F0;
  --blue:#3B6BF0;

  --grad:linear-gradient(112deg,#F7A82B 0%,#F4703F 26%,#16B4F0 66%,#3B6BF0 100%);
  --grad-soft:linear-gradient(112deg,rgba(247,168,43,.16),rgba(244,112,63,.14) 26%,rgba(22,180,240,.14) 66%,rgba(59,107,240,.16));

  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --line-dark:rgba(21,23,28,.14);

  --font:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --serif:Georgia,"Songti SC","Times New Roman",serif;

  --wrap:1180px;
  --pad:clamp(20px,5vw,48px);
  --sec:clamp(84px,11vw,160px);

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,dl,dd,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
::selection{background:var(--orange);color:#fff}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}

/* ---------- Texture ---------- */
.grain{
  position:fixed;inset:0;z-index:400;pointer-events:none;opacity:.30;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:300;background:transparent}
.progress i{display:block;height:100%;width:0;background:var(--grad)}

/* ---------- Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
.br-pc{display:none}
@media(min-width:900px){.br-pc{display:block}}

/* ---------- Type ---------- */
.kicker{
  display:flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--text-dim);margin-bottom:26px;font-weight:500;
}
.kicker i{display:block;width:34px;height:1px;background:var(--line-strong);flex:none}
.kicker--dark{color:var(--text-dark-dim)}
.kicker--dark i{background:var(--line-dark)}

.h2{
  font-size:clamp(26px,3.5vw,46px);
  line-height:1.34;letter-spacing:-.015em;font-weight:600;
  margin-bottom:26px;text-wrap:balance;
}
.h2--dark{color:var(--text-dark)}

.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.mark{
  position:relative;white-space:nowrap;
  background:linear-gradient(transparent 62%,rgba(244,112,63,.28) 62%,rgba(244,112,63,.28) 96%,transparent 96%);
}

.lead{
  font-size:clamp(15px,1.15vw,17px);line-height:1.95;
  color:var(--text-dim);max-width:62ch;text-wrap:pretty;
}
.lead--dark{color:var(--text-dark-dim)}
.lead b{color:var(--text);font-weight:600}

.pending{
  display:inline-block;padding:1px 8px;margin:0 2px;
  border:1px dashed rgba(244,112,63,.55);border-radius:3px;
  font-size:.82em;color:#E4703F;letter-spacing:.02em;
  white-space:nowrap;
}

.mini-title{
  font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--text-dim);font-weight:500;margin-bottom:22px;
}

/* ---------- Buttons ---------- */
.btn{
  --b:1px;
  position:relative;display:inline-flex;align-items:center;gap:12px;
  padding:15px 26px;border-radius:2px;
  font-size:14.5px;font-weight:500;letter-spacing:.01em;
  border:1px solid var(--line-strong);
  background:transparent;color:var(--text);cursor:pointer;
  transition:transform .5s var(--ease-out),background .4s,border-color .4s,color .4s;
  will-change:transform;
}
.btn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .5s var(--ease-out)}
.btn:hover{transform:translateY(-2px)}
.btn:hover svg{transform:translateX(3px)}
.btn--sm{padding:11px 20px;font-size:13.5px}
.btn--full{width:100%;justify-content:center}

.btn--primary{
  border:none;color:#fff;
  background:var(--grad);
  background-size:180% 100%;background-position:0% 50%;
  box-shadow:0 10px 34px -12px rgba(244,112,63,.55);
}
.btn--primary:hover{background-position:100% 50%;box-shadow:0 16px 42px -12px rgba(59,107,240,.55)}

.btn--ghost{color:var(--text-dim)}
.btn--ghost:hover{color:var(--text);border-color:var(--text)}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px var(--pad);
  transition:padding .5s var(--ease),background .5s,backdrop-filter .5s,border-color .5s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  padding:12px var(--pad);
  background:rgba(7,8,12,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav__brand{display:flex;align-items:center;gap:12px;flex:none;min-width:0}
.nav__logo{width:38px;height:38px;object-fit:contain;flex:none;transition:width .5s var(--ease),height .5s var(--ease)}
.nav.is-stuck .nav__logo{width:30px;height:30px}
.nav__name{
  display:flex;flex-direction:column;line-height:1.15;
  font-size:16px;font-weight:600;letter-spacing:.14em;white-space:nowrap;
}
.nav__name em{
  font-style:normal;font-family:var(--serif);font-size:8.5px;
  letter-spacing:.20em;color:var(--text-dim);margin-top:3px;font-weight:400;
}
.nav__cta{flex:none;white-space:nowrap}
@media(max-width:560px){.nav__cta{display:none}}
.nav__links{display:none;gap:34px;font-size:13.5px;letter-spacing:.03em;color:var(--text-dim)}
.nav__links a{position:relative;padding:6px 0;transition:color .35s}
.nav__links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--grad);transition:width .45s var(--ease-out);
}
.nav__links a:hover{color:var(--text)}
.nav__links a:hover::after{width:100%}

.nav__toggle{display:flex;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav__toggle span{display:block;width:22px;height:1.5px;background:var(--text);transition:transform .4s var(--ease),opacity .3s}
.nav.is-open .nav__toggle span:first-child{transform:translateY(3.2px) rotate(45deg)}
.nav.is-open .nav__toggle span:last-child{transform:translateY(-3.2px) rotate(-45deg)}

@media(min-width:940px){
  .nav__links{display:flex}
  .nav__toggle{display:none}
}
@media(max-width:939px){
  .nav.is-open{
    background:rgba(7,8,12,.96);
    backdrop-filter:blur(20px);
    border-bottom-color:var(--line);
  }
  .nav.is-open .nav__links{
    display:flex;flex-direction:column;gap:0;
    position:absolute;top:100%;left:0;right:0;
    padding:8px var(--pad) 24px;
    background:rgba(7,8,12,.96);
    backdrop-filter:blur(20px);
  }
  .nav.is-open .nav__links a{
    padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text);
  }
  .nav__cta-hide{display:none}
}

/* ---------- HERO ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;align-items:center;
  padding:clamp(96px,13vh,150px) 0 64px;
  overflow:hidden;
}
.hero__glow{
  position:absolute;z-index:0;
  width:min(1100px,120vw);aspect-ratio:1;
  top:-22%;right:-28%;
  background:radial-gradient(circle at 50% 50%,rgba(59,107,240,.20),rgba(22,180,240,.10) 38%,transparent 66%);
  filter:blur(30px);pointer-events:none;
}
.hero__glow::after{
  content:"";position:absolute;inset:24% 30% 34% 12%;
  background:radial-gradient(circle at 40% 60%,rgba(244,112,63,.20),transparent 62%);
  filter:blur(40px);
}
.hero__grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(ellipse 82% 68% at 50% 34%,#000 12%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 82% 68% at 50% 34%,#000 12%,transparent 78%);
}
.hero__inner{
  position:relative;z-index:2;
  display:grid;gap:clamp(44px,6vw,80px);
  grid-template-columns:1fr;
  align-items:center;
}
.hero__title{
  font-size:clamp(38px,7.4vw,84px);
  line-height:1.14;letter-spacing:-.03em;font-weight:700;
  margin:0 0 30px;
}
.hero__title span{display:block}
.hero__lead{max-width:48ch;font-size:clamp(15px,1.15vw,17.5px)}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

.hero__facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(14px,2.4vw,32px);margin:52px 0 0;
  padding-top:30px;border-top:1px solid var(--line);
  max-width:520px;
}
.hero__facts dt{font-size:11.5px;letter-spacing:.1em;color:var(--text-dim);margin-bottom:8px}
.hero__facts dd{
  display:flex;align-items:baseline;gap:4px;
  font-family:var(--serif);font-size:clamp(28px,3.6vw,40px);
  line-height:1;letter-spacing:-.01em;
}
.hero__facts small{font-family:var(--font);font-size:11.5px;color:var(--text-dim);letter-spacing:.06em}

/* 主标题声明的合规脚注：极小、极淡，不抢主视觉 */
.hero__note{
  margin:22px 0 0;max-width:520px;
  font-size:11px;line-height:1.75;color:#7E848E;letter-spacing:.01em;
  text-wrap:pretty;
}

/* 视觉：轨道 */
.hero__visual{display:flex;justify-content:center;align-items:center;order:2}
.orbit{
  position:relative;width:min(70vw,320px);aspect-ratio:1;
  display:grid;place-items:center;
}
@media(min-width:900px){.orbit{width:min(78vw,430px)}}
.orbit__mark{
  width:56%;height:auto;position:relative;z-index:3;
  filter:drop-shadow(0 24px 60px rgba(59,107,240,.42)) drop-shadow(0 8px 26px rgba(244,112,63,.24));
  animation:float 9s ease-in-out infinite;
}
.orbit__ring{
  position:absolute;border-radius:50%;
  border:1px solid var(--line-strong);
}
.orbit__ring--a{inset:0;animation:spin 46s linear infinite}
.orbit__ring--b{
  inset:11%;
  border:1px dashed rgba(255,255,255,.13);
  animation:spin 34s linear infinite reverse;
}
.orbit__ring--c{
  inset:22%;
  border:none;
  background:conic-gradient(from 0deg,transparent 0 62%,rgba(22,180,240,.55) 78%,rgba(247,168,43,.7) 92%,transparent 100%);
  -webkit-mask:radial-gradient(circle,transparent 63%,#000 64%);
  mask:radial-gradient(circle,transparent 63%,#000 64%);
  animation:spin 18s linear infinite;
  opacity:.9;
}
.orbit__ring--a::before{
  content:"";position:absolute;top:-3.5px;left:50%;width:7px;height:7px;border-radius:50%;
  background:var(--amber);box-shadow:0 0 18px 3px rgba(247,168,43,.7);transform:translateX(-50%);
}
.orbit__tag{
  position:absolute;z-index:4;
  font-family:var(--serif);font-size:10.5px;letter-spacing:.2em;
  color:var(--text-dim);padding:5px 10px;
  border:1px solid var(--line);border-radius:99px;
  background:rgba(7,8,12,.72);backdrop-filter:blur(8px);
}
.orbit__tag--1{top:3%;left:6%}
.orbit__tag--2{bottom:12%;left:-2%}
.orbit__tag--3{top:30%;right:-3%}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{
  0%,100%{transform:translateY(-6px)}
  50%{transform:translateY(8px)}
}

.hero__scroll{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  display:none;flex-direction:column;align-items:center;gap:10px;z-index:3;
}
.hero__scroll span{font-size:9.5px;letter-spacing:.34em;color:var(--text-dim)}
.hero__scroll i{display:block;width:1px;height:44px;background:linear-gradient(var(--text-dim),transparent);animation:drop 2.4s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(.2);transform-origin:top;opacity:0}40%{opacity:1}100%{transform:scaleY(1);transform-origin:top;opacity:0}}

@media(min-width:900px){
  .hero__inner{grid-template-columns:1.08fr .92fr}
  .hero__scroll{display:flex}
}

/* ---------- 原理滚动带 ---------- */
.marquee{
  position:relative;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--ink-2);
  padding:26px 0 30px;overflow:hidden;
}
.marquee__label{
  max-width:var(--wrap);margin:0 auto 16px;padding:0 var(--pad);
  font-size:10.5px;letter-spacing:.24em;color:#6E7480;text-transform:uppercase;
}
.marquee__track{
  display:flex;width:max-content;
  animation:marquee 52s linear infinite;
  will-change:transform;
}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__group{display:flex;align-items:center;flex:none}
.marquee__group span{
  display:inline-flex;align-items:center;
  padding:0 20px;font-size:clamp(15px,1.6vw,19px);
  letter-spacing:.06em;color:#8E95A3;white-space:nowrap;
  transition:color .4s;
}
.marquee__group span::after{
  content:"";width:5px;height:5px;margin-left:20px;
  background:var(--grad);border-radius:1px;transform:rotate(45deg);
  opacity:.75;
}
.marquee__group span:hover{color:var(--text)}
@keyframes marquee{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

/* ---------- CRED ---------- */
.cred{padding:var(--sec) 0;position:relative;background:var(--ink);border-top:1px solid var(--line)}
.cred__head{max-width:900px;margin-bottom:clamp(52px,6vw,80px)}
.cred__grid{
  display:grid;gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  grid-template-columns:1fr;
}
@media(min-width:640px){.cred__grid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.cred__grid{grid-template-columns:repeat(4,1fr)}}

.cred-card{
  position:relative;background:var(--ink);
  padding:clamp(26px,3vw,38px) clamp(20px,2.4vw,30px) clamp(30px,3.4vw,44px);
  transition:background .55s var(--ease);
  overflow:hidden;
}
.cred-card::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad);transition:width .7s var(--ease-out);
}
.cred-card:hover{background:var(--ink-2)}
.cred-card:hover::after{width:100%}
.cred-card__idx{
  display:block;font-family:var(--serif);font-size:11px;
  letter-spacing:.2em;color:var(--text-dim);margin-bottom:20px;
}
.cred-card h3{font-size:17px;font-weight:600;margin-bottom:12px;letter-spacing:.01em}
.cred-card p{font-size:13.8px;line-height:1.9;color:var(--text-dim)}
.cred-card b{color:var(--text);font-weight:600}

/* ---------- LADDER（浅色段） ---------- */
.ladder{
  padding:var(--sec) 0;
  background:var(--paper);color:var(--text-dark);
  position:relative;
}
.ladder::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-dark) 1px,transparent 1px);
  background-size:100% 88px;
  mask-image:linear-gradient(transparent,#000 18%,#000 82%,transparent);
  -webkit-mask-image:linear-gradient(transparent,#000 18%,#000 82%,transparent);
}
.ladder .wrap{position:relative;z-index:1}
.ladder__head{max-width:860px;margin-bottom:clamp(46px,5vw,70px)}
.ladder__body{
  display:grid;gap:clamp(26px,3.4vw,44px);
  grid-template-columns:1fr;
  align-items:start;
}
@media(min-width:900px){
  .ladder__body{grid-template-columns:.85fr 1.15fr}
}

.ladder__tabs{display:flex;flex-direction:column;border-top:1px solid var(--line-dark)}
.ladder__tab{
  display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;
  width:100%;padding:15px 4px;text-align:left;
  background:none;border:0;border-bottom:1px solid var(--line-dark);
  cursor:pointer;color:var(--text-dark-dim);
  transition:color .4s,padding .5s var(--ease-out);
  font-size:14.5px;
}
.ladder__tab:hover{color:var(--text-dark);padding-left:10px}
.ladder__tab .tier{
  font-family:var(--serif);font-size:10.5px;letter-spacing:.16em;
  color:#A9A597;min-width:52px;
}
.ladder__tab .nm{font-weight:500;letter-spacing:.01em}
.ladder__tab .age{font-size:12px;color:#9C9789;letter-spacing:.02em}
.ladder__tab.is-active{color:var(--text-dark);padding-left:10px}
.ladder__tab.is-active .nm{font-weight:600}
.ladder__tab.is-active .tier{color:var(--orange)}
.ladder__tab.is-active .nm::after{
  content:"";display:block;height:1px;margin-top:6px;background:var(--grad);
  animation:grow .6s var(--ease-out) both;
}
@keyframes grow{from{transform:scaleX(0);transform-origin:left}to{transform:scaleX(1);transform-origin:left}}

.ladder__panel{
  background:#FBFAF6;
  border:1px solid var(--line-dark);
  padding:clamp(26px,3.2vw,44px);
  position:relative;overflow:hidden;
  box-shadow:0 30px 70px -50px rgba(21,23,28,.5);
}
.ladder__panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);
}
.panel__top{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px;margin-bottom:6px}
.panel__no{
  font-family:var(--serif);font-size:clamp(40px,5vw,58px);
  line-height:.95;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.panel__name{font-size:clamp(22px,2.4vw,28px);font-weight:600;letter-spacing:-.01em;color:var(--text-dark)}
.panel__stage{
  font-size:11px;letter-spacing:.18em;color:#8E8A7E;
  margin-left:auto;align-self:center;
}
.panel__desc{
  font-size:14.5px;line-height:1.95;color:var(--text-dark-dim);
  margin:18px 0 26px;max-width:52ch;
}
.panel__specs{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(108px,1fr));
  gap:1px;background:var(--line-dark);border:1px solid var(--line-dark);
  margin-bottom:26px;
}
.panel__specs div{background:#FBFAF6;padding:14px 16px}
.panel__specs dt{font-size:10.5px;letter-spacing:.14em;color:#93907F;margin-bottom:5px}
.panel__specs dd{font-size:14.5px;font-weight:600;color:var(--text-dark);letter-spacing:.01em}

.panel__block{margin-top:22px}
.panel__block h4{
  font-size:11px;letter-spacing:.18em;color:#93907F;
  font-weight:500;margin-bottom:10px;
}
.panel__block ul{display:flex;flex-wrap:wrap;gap:8px}
.panel__block li{
  font-size:12.5px;padding:5px 11px;border-radius:2px;
  background:rgba(21,23,28,.045);color:#3E434D;letter-spacing:.01em;
}
.panel__block--accent li{background:var(--grad-soft);color:#8A3F1F;border:1px solid rgba(244,112,63,.18)}

.panel__fee{
  margin-top:24px;padding-top:16px;border-top:1px dashed var(--line-dark);
  font-size:12px;color:#93907F;letter-spacing:.01em;
}

.ladder__note{
  display:flex;gap:10px;align-items:flex-start;
  margin-top:clamp(30px,3.6vw,44px);
  font-size:12.8px;color:#8E8A7E;line-height:1.85;max-width:70ch;
}
.ladder__note svg{width:15px;height:15px;flex:none;margin-top:3px;fill:none;stroke:currentColor;stroke-width:1.4}

/* ---------- CONTEST ---------- */
.contest{padding:var(--sec) 0;background:var(--ink);position:relative;overflow:hidden}
.contest::before{
  content:"";position:absolute;left:50%;top:-16%;width:min(900px,120%);aspect-ratio:1;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(59,107,240,.14),transparent 62%);
  filter:blur(20px);pointer-events:none;
}
.contest .wrap{position:relative;z-index:1}
.contest__head{max-width:820px;margin-bottom:clamp(46px,5.4vw,72px)}

.path{
  display:grid;gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  grid-template-columns:1fr;
}
@media(min-width:700px){.path{grid-template-columns:1fr 1fr}}
@media(min-width:1040px){.path{grid-template-columns:repeat(4,1fr)}}
.path__step{
  background:var(--ink);padding:clamp(24px,2.8vw,34px);
  position:relative;transition:background .5s var(--ease);
}
.path__step:hover{background:var(--ink-2)}
.path__step::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;
  transition:transform .7s var(--ease-out);
}
.path__step:hover::before{transform:scaleX(1)}
.path__no{
  display:block;font-family:var(--serif);font-size:10.5px;
  letter-spacing:.2em;color:var(--text-dim);margin-bottom:16px;
}
.path__step h3{font-size:19px;font-weight:600;margin-bottom:12px;letter-spacing:.01em}
.path__step p{font-size:12.6px;line-height:1.9;color:var(--text-dim)}
.path__step p span{display:block}

.contest__lists{
  display:grid;gap:clamp(36px,4vw,56px);margin-top:clamp(48px,5.4vw,72px);
  grid-template-columns:1fr;
}/* 现仅剩「教育部白名单赛事」一组，单列铺满 */
@media(min-width:900px){.contest__lists{grid-template-columns:1fr}}

.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips li{
  font-size:12.8px;padding:8px 14px;border-radius:2px;
  border:1px solid var(--line);color:var(--text);
  transition:border-color .4s,background .4s,transform .4s var(--ease-out);
}
.chips li:hover{border-color:rgba(255,255,255,.32);transform:translateY(-2px)}
.chips--ghost li{color:var(--text-dim);border-style:dashed}
.chips--ghost li:hover{color:var(--text);border-color:rgba(255,255,255,.3)}

/* ---------- TEAM（浅色） ---------- */
.team{padding:var(--sec) 0;background:var(--paper-2);color:var(--text-dark)}
.team__head{max-width:760px;margin-bottom:clamp(44px,5vw,68px)}
.team__grid{display:grid;gap:1px;background:var(--line-dark);border:1px solid var(--line-dark)}
@media(min-width:920px){.team__grid{grid-template-columns:repeat(3,1fr)}}
.person{background:var(--paper-2);padding:clamp(26px,3vw,40px);display:flex;gap:18px;align-items:flex-start}
.person__mono{
  flex:none;width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  font-size:19px;font-weight:600;color:#fff;
  background:linear-gradient(140deg,#E9602C 0%,#D64A2E 42%,#2C56D8 100%);
  box-shadow:0 10px 26px -12px rgba(214,74,46,.55);
}
.person__body h3{font-size:17px;font-weight:600;letter-spacing:.01em;display:flex;align-items:baseline;gap:9px}
.person__body h3 small{font-size:10.5px;letter-spacing:.14em;color:#8E8A7E;font-weight:400}
.person__role{font-size:12.5px;color:var(--orange);margin:7px 0 12px;letter-spacing:.01em}
.person__body p{font-size:13.2px;line-height:1.92;color:var(--text-dark-dim)}
/* 工商全称不拆行：拆开「有限公司」比换行更难看 */
.nb{white-space:nowrap}

/* ---------- 课堂怎么做 ---------- */
.method{padding:var(--sec) 0;background:var(--ink);position:relative;overflow:hidden}
.method::before{
  content:"";position:absolute;left:-16%;top:8%;width:min(720px,90%);aspect-ratio:1;
  background:radial-gradient(circle,rgba(22,180,240,.10),transparent 64%);
  filter:blur(30px);pointer-events:none;
}
.method .wrap{position:relative;z-index:1}
.method__head{max-width:820px;margin-bottom:clamp(42px,5vw,66px)}
.method__steps{
  display:grid;gap:1px;background:var(--line);
  grid-template-columns:1fr;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  counter-reset:step;
}
@media(min-width:640px){.method__steps{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.method__steps{grid-template-columns:repeat(3,1fr)}}
.method__steps li{
  position:relative;background:var(--ink);
  padding:clamp(24px,2.6vw,34px) clamp(20px,2.2vw,28px);
  transition:background .5s var(--ease);
}
.method__steps li::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad);transition:width .7s var(--ease-out);
}
.method__steps li:hover{background:var(--ink-2)}
.method__steps li:hover::after{width:100%}
.method__no{
  display:block;font-family:var(--serif);font-size:11px;letter-spacing:.2em;
  color:var(--text-dim);margin-bottom:16px;
}
.method__steps h3{font-size:17px;font-weight:600;margin-bottom:10px;letter-spacing:.02em}
.method__steps p{font-size:13.4px;line-height:1.9;color:var(--text-dim)}

/* ---------- 中段 CTA ---------- */
.pitch{
  padding:clamp(56px,7vw,96px) 0;
  background:var(--ink-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;overflow:hidden;
}
.pitch::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background:radial-gradient(ellipse 60% 120% at 78% 50%,rgba(244,112,63,.16),transparent 70%);
}
.pitch__wrap{
  position:relative;z-index:1;
  display:grid;gap:clamp(28px,4vw,52px);align-items:center;
  grid-template-columns:1fr;
}
@media(min-width:880px){.pitch__wrap{grid-template-columns:1.25fr .75fr}}
.pitch .h2{margin-bottom:14px}
.pitch .lead{max-width:46ch}
.pitch__actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:880px){.pitch__actions{justify-content:flex-end}}

/* ---------- FAQ ---------- */
.faq{padding:var(--sec) 0;background:var(--ink-2);border-top:1px solid var(--line)}
.faq__wrap{display:grid;gap:clamp(36px,4.6vw,70px);grid-template-columns:1fr}
@media(min-width:900px){.faq__wrap{grid-template-columns:.75fr 1.25fr}}
.faq__aside h2{font-size:clamp(24px,3vw,38px)}
.faq__list details{border-bottom:1px solid var(--line)}
.faq__list summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:15.5px;font-weight:500;letter-spacing:.01em;
  transition:color .4s;
}
.faq__list summary::-webkit-details-marker{display:none}
.faq__list summary::after{
  content:"";flex:none;width:11px;height:11px;
  border-right:1.5px solid var(--text-dim);border-bottom:1.5px solid var(--text-dim);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .45s var(--ease-out),border-color .4s;
}
.faq__list details[open] summary::after{transform:rotate(225deg) translateY(-2px);border-color:var(--cyan)}
.faq__list summary:hover{color:#fff}
.faq__list details p{
  padding:0 0 26px;font-size:14px;line-height:1.95;color:var(--text-dim);max-width:64ch;
  animation:fadeUp .5s var(--ease-out) both;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- VISIT ---------- */
.visit{padding:var(--sec) 0;background:var(--paper);color:var(--text-dark);position:relative;overflow:hidden}
.visit::before{
  content:"";position:absolute;right:-14%;top:-10%;width:min(760px,100%);aspect-ratio:1;
  background:radial-gradient(circle,rgba(247,168,43,.20),transparent 62%);
  filter:blur(30px);pointer-events:none;
}
.visit__wrap{
  position:relative;z-index:1;
  display:grid;gap:clamp(38px,4.6vw,64px);grid-template-columns:1fr;align-items:start;
}
@media(min-width:920px){.visit__wrap{grid-template-columns:1.1fr .9fr}}
.visit .kicker{color:#8E8A7E}
.visit .kicker i{background:var(--line-dark)}
.visit .lead{color:var(--text-dark-dim)}
.visit__meta{margin-top:clamp(32px,4vw,48px);display:grid;gap:1px;background:var(--line-dark);border-top:1px solid var(--line-dark)}
.visit__meta > div{
  display:grid;grid-template-columns:96px 1fr;gap:16px;
  background:var(--paper);padding:16px 0;border-bottom:1px solid var(--line-dark);
}
.visit__meta dt{font-size:11.5px;letter-spacing:.14em;color:#8E8A7E;padding-top:3px}
.visit__meta dd{font-size:14.5px;font-weight:500;color:var(--text-dark)}
.visit__meta dd b{font-weight:700;color:var(--text-dark);white-space:nowrap}

/* 电话号码：可点击拨号，视觉与正文同重，靠下方细线提示可交互 */
.visit__tels{display:flex;flex-direction:column;gap:4px}
.visit__tels a{
  display:inline-block;width:fit-content;color:var(--text-dark);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  border-bottom:1px solid rgba(244,112,63,.4);
  transition:color .25s,border-color .25s;
}
.visit__tels a:hover{color:var(--orange);border-color:var(--orange)}
.visit__note{font-size:12px;font-weight:400;color:#8E8A7E;letter-spacing:.02em;margin-top:2px}

.visit__card{
  background:#FBFAF6;border:1px solid var(--line-dark);
  padding:clamp(26px,3.2vw,40px);
  box-shadow:0 40px 90px -60px rgba(21,23,28,.55);
  position:relative;
}
.visit__card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.visit__logo{width:44px;height:44px;object-fit:contain;margin-bottom:18px}
.visit__card h3{font-size:20px;font-weight:600;margin-bottom:8px}
.visit__card > p{font-size:13px;color:var(--text-dark-dim);margin-bottom:24px;line-height:1.85}

.form{display:grid;gap:14px}
.form label{display:grid;gap:7px}
.form label span{font-size:11.5px;letter-spacing:.12em;color:#8E8A7E}
.form input{
  width:100%;padding:13px 14px;
  border:1px solid var(--line-dark);background:#fff;
  font:inherit;font-size:14.5px;color:var(--text-dark);
  border-radius:2px;transition:border-color .35s,box-shadow .35s;
}
.form input::placeholder{color:#B4AF9F}
.form input:focus{
  outline:none;border-color:var(--orange);
  box-shadow:0 0 0 3px rgba(244,112,63,.12);
}
.form .btn{margin-top:6px}
.form__hint{font-size:11.5px;color:#9C9789;line-height:1.7;margin-top:2px}
.form__hint.is-ok{color:#2E8B57}
.form__hint a{color:#8A8577;text-decoration:underline;text-underline-offset:2px;text-decoration-color:rgba(244,112,63,.5)}
.form__hint a:hover{color:var(--orange)}
.form__hint--muted{margin-top:0}

/* ---------- FOOTER ---------- */
.foot{background:var(--ink);border-top:1px solid var(--line);padding:clamp(46px,5vw,70px) 0 40px}
.foot__wrap{display:grid;gap:32px;grid-template-columns:1fr;align-items:start}
@media(min-width:820px){.foot__wrap{grid-template-columns:1.2fr 1fr 1fr}}
.foot__brand{display:flex;align-items:center;gap:14px}
.foot__logo{width:40px;height:40px;object-fit:contain;opacity:.92}
.foot__brand strong{display:block;font-size:15.5px;letter-spacing:.14em;font-weight:600}
.foot__brand p{font-size:12px;color:var(--text-dim);margin-top:5px;letter-spacing:.02em}
.foot__nav{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:13px;color:var(--text-dim)}
.foot__nav a{transition:color .35s}
.foot__nav a:hover{color:var(--text)}
.foot__legal{font-size:12px;color:#6E7480;line-height:2;letter-spacing:.01em}
.foot__legal p:first-child{color:#8C929E}
/* ICP 备案号：工信部要求可点击，尾部细线提示 */
.foot__icp{
  color:#7C828E;font-variant-numeric:tabular-nums;
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:color .25s,border-color .25s;
}
.foot__icp:hover{color:var(--text-dim);border-color:rgba(255,255,255,.4)}
@media(min-width:820px){.foot__legal{text-align:right}}

/* ---------- 移动端吸附操作条 ---------- */
/* 只在 <900px 出现；滚过首屏才升起，进到「到访」区自动收起（避免遮挡表单提交按钮） */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;align-items:center;gap:10px;
  padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(7,8,12,.9);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-top:1px solid var(--line-strong);
  box-shadow:0 -18px 40px -24px rgba(0,0,0,.9);
  transform:translate3d(0,110%,0);
  transition:transform .42s var(--ease-out);
}
@media(max-width:899px){
  .dock{display:flex}
  body{padding-bottom:calc(66px + env(safe-area-inset-bottom,0px))}
}
.dock.is-on{transform:translate3d(0,0,0)}

.dock__item{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:3px;font-size:14px;font-weight:600;
  letter-spacing:.01em;white-space:nowrap;
  transition:opacity .2s,transform .2s;
  -webkit-tap-highlight-color:transparent;
}
.dock__item:active{transform:scale(.975);opacity:.86}
.dock__item svg{flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* 左：号码可拨，弱化处理，让右侧转化按钮更突出 */
.dock__item--call{
  padding:0 14px;flex:none;
  color:var(--text);border:1px solid var(--line-strong);
  font-variant-numeric:tabular-nums;font-size:13.5px;letter-spacing:.02em;
}
.dock__item--call svg{width:16px;height:16px;stroke:var(--amber)}

/* 右：主转化，品牌渐变（与站内 .btn--primary 同色同一套影子） */
.dock__item--book{
  flex:1;position:relative;overflow:hidden;
  background:var(--grad);background-size:180% 100%;background-position:0% 50%;
  color:#fff;padding:0 16px;
  box-shadow:0 10px 26px -14px rgba(244,112,63,.9);
}
.dock__item--book::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.16),transparent 58%);
  pointer-events:none;
}
.dock__item--book span{position:relative;z-index:1}
.dock__item--book svg{width:15px;height:15px;stroke-width:2;position:relative;z-index:1}

@media(max-width:359px){
  .dock__item--call{font-size:12.5px;padding:0 10px;gap:6px}
  .dock__item--book{font-size:13px;padding:0 10px}
}


/* ---------- Reveal ---------- */
/* 渐进增强：只有 JS 正常执行（html.js）时才隐藏待揭示元素，
   若脚本失败或被拦截，页面内容照常完整可见 */
.reveal{opacity:1;transform:none}
html.js .reveal{
  opacity:0;transform:translateY(22px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);
  transition-delay:var(--d,0s);
}
html.js .reveal.is-in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{opacity:1;transform:none;transition:none}
  .orbit__ring,.orbit__mark,.hero__scroll i{animation:none}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}