/* ============================================================
   PRESIGHT TRADING INSTITUTE
   Design direction: "绘图画布" — the page is laid out like a
   multi-panel scientific figure. Light plotting canvas, with
   dark instrument panels inset wherever real data appears.
   Signature: the solid→dashed transition (已实现 → 先见).
   ============================================================ */

:root{
  /* canvas */
  --paper:      #EDF0F4;
  --paper-hi:   #F8FAFC;
  --grid:       #C9D3DE;
  --grid-soft:  #DDE4EC;

  /* ink */
  --ink:        #0A111E;
  --ink-mid:    #55627A;
  --ink-soft:   #8A94A6;

  /* data */
  --cobalt:     #1B3BD8;   /* 已实现 / realized */
  --cobalt-hi:  #4A66F0;
  --forecast:   #D6188A;   /* 预测 / projection — always dashed */
  --amber:      #C97A05;   /* 条款与提示 */
  --loss:       #B4232B;

  /* dark instrument panel */
  --panel:      #0A111E;
  --panel-2:    #141E33;
  --panel-line: #24304A;
  --panel-txt:  #C3CCDC;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Archivo", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --han:  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --rail: 84px;
  --gut: 32px;
  --maxw: 1240px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important} }

body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
  overflow-x:hidden;
}

/* graph-paper substrate */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size:56px 56px;
  opacity:.75;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.25));
}

.wrap{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}

/* ---------- type scale ---------- */
.display{
  font-family:var(--sans);
  font-weight:800;
  letter-spacing:-.035em;
  line-height:.98;
  font-size:clamp(2.6rem, 7.2vw, 5.6rem);
}
.display.han{
  font-size:clamp(1.7rem, 3.7vw, 3.05rem);
  letter-spacing:-.01em;
  line-height:1.34;
  font-weight:700;
}
.h2{font-weight:700;letter-spacing:-.028em;line-height:1.04;font-size:clamp(1.9rem,4vw,3.1rem)}
.h3{font-weight:700;letter-spacing:-.02em;font-size:clamp(1.15rem,2vw,1.45rem)}
.han{font-family:var(--han)}
.lede{font-family:var(--han);font-size:clamp(1rem,1.5vw,1.15rem);color:var(--ink-mid);line-height:1.75;max-width:56ch}

/* plotting vernacular: figure eyebrow */
.fig{
  font-family:var(--mono);font-size:.68rem;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft);
  display:flex;align-items:center;gap:12px;margin-bottom:20px;
}
.fig::before{content:"";width:22px;height:1px;background:var(--ink-soft);flex:none}
.fig b{color:var(--cobalt);font-weight:700}

.mono{font-family:var(--mono)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* signature divider: solid rule that becomes dashed */
.rule{height:1px;border:0;background:
  linear-gradient(90deg, var(--ink) 0 58%, transparent 58%),
  repeating-linear-gradient(90deg, var(--forecast) 0 7px, transparent 7px 14px);
  opacity:.55;margin:0}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:60;
  background:rgba(237,240,244,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--grid);
}
.hbar{display:flex;align-items:center;justify-content:space-between;height:66px;gap:24px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);flex:none}
.logo svg{display:block}
.logo .lt{font-weight:800;letter-spacing:-.02em;font-size:1.02rem;line-height:1}
.logo .lc{font-family:var(--han);font-size:.66rem;color:var(--ink-soft);letter-spacing:.16em;margin-top:3px}
nav{display:flex;gap:30px;font-family:var(--han);font-size:.88rem;font-weight:500}
nav a{color:var(--ink-mid);text-decoration:none;position:relative;padding:4px 0;transition:color .18s}
nav a:hover{color:var(--ink)}
nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1.5px;background:var(--cobalt);transform:scaleX(0);transform-origin:left;transition:transform .22s}
nav a:hover::after{transform:scaleX(1)}

.btn{
  font-family:var(--han);font-weight:600;font-size:.87rem;
  padding:10px 20px;border:1px solid var(--ink);background:var(--ink);color:var(--paper-hi);
  text-decoration:none;display:inline-flex;align-items:center;gap:9px;
  border-radius:2px;transition:background .18s,color .18s,border-color .18s;cursor:pointer;
}
.btn:hover{background:var(--cobalt);border-color:var(--cobalt)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper-hi)}
.btn.big{padding:15px 30px;font-size:.98rem}
.btn.onDark{background:var(--paper-hi);border-color:var(--paper-hi);color:var(--panel)}
.btn.onDark:hover{background:var(--cobalt-hi);border-color:var(--cobalt-hi);color:#fff}
.btn .arw{font-family:var(--mono);font-size:.85em;transition:transform .18s}
.btn:hover .arw{transform:translateX(3px)}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:3px}

/* ---------- ticker ---------- */
.tick{background:var(--panel);color:var(--panel-txt);overflow:hidden;border-bottom:1px solid var(--panel-line)}
.tick-in{display:flex;gap:44px;padding:9px 0;white-space:nowrap;animation:slide 42s linear infinite;font-family:var(--mono);font-size:.71rem;letter-spacing:.05em}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.tick:hover .tick-in{animation-play-state:paused}
.tick i{font-style:normal;color:#5B6883;margin-right:8px}
.up{color:#3ED598}.dn{color:#FF6B6B}

/* ---------- hero ---------- */
.hero{padding:78px 0 0;position:relative}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:end}
.hero h1 .fx{
  color:var(--forecast);position:relative;white-space:nowrap;
}
.hero h1 .fx::after{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:3px;
  background:repeating-linear-gradient(90deg,var(--forecast) 0 9px,transparent 9px 17px);
}
.hero .lede{margin-top:26px}
.hero-cta{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-note{font-family:var(--mono);font-size:.7rem;color:var(--ink-soft);margin-top:18px;letter-spacing:.04em}

/* signature chart */
.sigchart{position:relative;border:1px solid var(--grid);background:rgba(255,255,255,.55);border-radius:3px}
.sigchart svg{display:block;width:100%;height:auto}
.legend{display:flex;gap:20px;padding:11px 14px;border-top:1px solid var(--grid);font-family:var(--mono);font-size:.66rem;color:var(--ink-mid);letter-spacing:.06em;flex-wrap:wrap}
.legend span{display:flex;align-items:center;gap:7px}
.sw{width:20px;height:0;border-top:2px solid var(--cobalt)}
.sw.d{border-top:2px dashed var(--forecast)}

/* stat strip */
.strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--grid);border-bottom:none;margin-top:64px;background:rgba(255,255,255,.5)}
.strip div{padding:22px 24px;border-right:1px solid var(--grid)}
.strip div:last-child{border-right:none}
.strip .k{font-family:var(--mono);font-size:.65rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:9px}
.strip .v{font-family:var(--mono);font-weight:700;font-size:1.65rem;letter-spacing:-.03em}
.strip .v small{font-size:.9rem;color:var(--ink-mid);font-weight:400;margin-left:3px}

/* ---------- sections ---------- */
section{padding:104px 0;position:relative}
.sec-head{max-width:62ch;margin-bottom:52px}
.sec-head .h2{margin-bottom:18px}

/* left axis rail */
.rail{position:absolute;left:0;top:0;bottom:0;width:var(--rail);border-right:1px dashed var(--grid);display:none}
@media(min-width:1420px){
  .rail{display:block}
  .rail span{position:absolute;left:14px;font-family:var(--mono);font-size:.62rem;letter-spacing:.2em;color:var(--ink-soft);writing-mode:vertical-rl;text-transform:uppercase}
  .rail::after{content:"";position:absolute;right:-4px;top:50%;width:7px;height:1px;background:var(--grid)}
}

/* ---------- product 01 : dark instrument panel ---------- */
.panelbox{background:var(--panel);color:var(--panel-txt);border-radius:3px;overflow:hidden;box-shadow:0 22px 60px -28px rgba(10,17,30,.55)}
.panel-top{padding:38px 40px 32px;border-bottom:1px solid var(--panel-line);display:flex;justify-content:space-between;gap:36px;align-items:flex-start;flex-wrap:wrap}
.panel-top h3{color:#fff;font-size:clamp(1.6rem,2.6vw,2.15rem);letter-spacing:-.025em;font-weight:700}
.panel-top .sub{font-family:var(--han);color:#8592AB;margin-top:12px;max-width:50ch;font-size:.95rem;line-height:1.7}
.tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.tag{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;padding:6px 11px;border:1px solid var(--panel-line);color:#8592AB;border-radius:2px;text-transform:uppercase}
.tag.hero-tag{border-color:var(--amber);color:#F0B429;background:rgba(240,180,41,.07);font-family:var(--han);letter-spacing:.04em;font-weight:600;text-transform:none;font-size:.76rem}
.tag.hero-tag a{color:inherit;text-decoration:underline;text-underline-offset:2px;opacity:.8}

.metrics{display:grid;grid-template-columns:repeat(5,1fr);border-bottom:1px solid var(--panel-line)}
.metrics div{padding:22px 22px;border-right:1px solid var(--panel-line)}
.metrics div:last-child{border-right:none}
.metrics .k{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;color:#5B6883;text-transform:uppercase;margin-bottom:8px}
.metrics .v{font-family:var(--mono);font-size:1.42rem;font-weight:700;color:#fff;letter-spacing:-.03em}
.metrics .v.g{color:#3ED598}
.metrics .v.r{color:#FF6B6B}

.curvewrap{padding:30px 40px 8px}
.curvewrap svg{display:block;width:100%;height:auto}

/* live trade table */
.tbl-head{display:flex;justify-content:space-between;align-items:center;padding:26px 40px 16px;gap:16px;flex-wrap:wrap}
.tbl-head h4{font-family:var(--han);font-size:1rem;color:#fff;font-weight:600}
.live{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.66rem;color:#3ED598;letter-spacing:.1em}
.dot{width:6px;height:6px;border-radius:50%;background:#3ED598;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.tblscroll{overflow-x:auto;padding:0 40px 34px}
table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:.79rem}
thead th{
  text-align:left;padding:11px 14px 11px 0;font-size:.61rem;letter-spacing:.14em;
  color:#5B6883;text-transform:uppercase;border-bottom:1px solid var(--panel-line);font-weight:500;white-space:nowrap;
}
tbody td{padding:13px 14px 13px 0;border-bottom:1px solid rgba(36,48,74,.5);white-space:nowrap;font-variant-numeric:tabular-nums}
tbody tr{transition:background .15s}
tbody tr:hover{background:var(--panel-2)}
.sym{color:#fff;font-weight:700;letter-spacing:.02em}
.side{font-size:.65rem;padding:3px 7px;border-radius:2px;letter-spacing:.08em}
.side.b{background:rgba(62,213,152,.13);color:#3ED598}
.side.s{background:rgba(255,107,107,.13);color:#FF6B6B}
.pnl.g{color:#3ED598}.pnl.r{color:#FF6B6B}
.state{padding:44px 40px;text-align:center;font-family:var(--han);color:#8592AB;font-size:.9rem}
.state b{display:block;color:#fff;font-weight:600;margin-bottom:7px;font-size:.98rem}
.skel{height:13px;background:linear-gradient(90deg,var(--panel-2) 25%,#1D2942 50%,var(--panel-2) 75%);background-size:200% 100%;animation:sh 1.3s infinite;border-radius:2px}
@keyframes sh{from{background-position:200% 0}to{background-position:-200% 0}}

.panel-cta{padding:32px 40px;border-top:1px solid var(--panel-line);display:flex;justify-content:space-between;align-items:center;gap:26px;flex-wrap:wrap;background:var(--panel-2)}
.panel-cta p{font-family:var(--han);font-size:.86rem;color:#8592AB;max-width:46ch;line-height:1.65}

/* ---------- product 02 : light ---------- */
.p2{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.free{display:inline-flex;align-items:baseline;gap:10px;font-family:var(--mono);font-weight:700;font-size:2.6rem;letter-spacing:-.04em;color:var(--cobalt);margin-bottom:6px}
.free s{font-size:1rem;color:var(--ink-soft);font-weight:400}
.offers{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--grid);border:1px solid var(--grid)}
.offer{background:var(--paper-hi);padding:28px 26px;transition:background .2s}
.offer:hover{background:#fff}
.offer .ix{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--cobalt);margin-bottom:14px}
.offer h4{font-family:var(--han);font-size:1.02rem;font-weight:600;margin-bottom:10px}
.offer p{font-family:var(--han);font-size:.85rem;color:var(--ink-mid);line-height:1.7}

/* ---------- steps (real sequence → numbering earned) ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--grid);border-top:1px solid var(--grid);border-bottom:1px solid var(--grid)}
.step{background:var(--paper);padding:38px 30px}
.step .n{font-family:var(--mono);font-weight:700;font-size:2.2rem;color:var(--grid);letter-spacing:-.05em;line-height:1;margin-bottom:20px}
.step h4{font-family:var(--han);font-size:1.05rem;font-weight:600;margin-bottom:11px}
.step p{font-family:var(--han);font-size:.87rem;color:var(--ink-mid);line-height:1.75}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--grid)}
details{border-bottom:1px solid var(--grid)}
summary{padding:24px 0;font-family:var(--han);font-weight:600;font-size:1rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center;transition:color .18s}
summary::-webkit-details-marker{display:none}
summary:hover{color:var(--cobalt)}
summary::after{content:"+";font-family:var(--mono);font-size:1.25rem;color:var(--ink-soft);flex:none;transition:transform .22s}
details[open] summary::after{transform:rotate(45deg);color:var(--cobalt)}
details p{font-family:var(--han);font-size:.9rem;color:var(--ink-mid);line-height:1.85;padding:0 0 26px;max-width:74ch}

/* ---------- risk + footer ---------- */
.risk{border:1px solid var(--amber);background:rgba(201,122,5,.05);padding:30px 32px;border-radius:3px}
.risk h4{font-family:var(--han);font-size:.94rem;font-weight:700;color:var(--amber);margin-bottom:13px;display:flex;align-items:center;gap:9px}
.risk p{font-family:var(--han);font-size:.81rem;color:var(--ink-mid);line-height:1.85}
.risk p + p{margin-top:11px}

footer{background:var(--panel);color:#8592AB;padding:66px 0 34px;margin-top:0}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding-bottom:44px;border-bottom:1px solid var(--panel-line)}
footer h5{font-family:var(--mono);font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;color:#5B6883;margin-bottom:18px}
footer a{display:block;color:#8592AB;text-decoration:none;font-family:var(--han);font-size:.87rem;padding:6px 0;transition:color .18s}
footer a:hover{color:#fff}
.fbot{padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-family:var(--mono);font-size:.68rem;color:#5B6883;letter-spacing:.04em}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1040px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .p2{grid-template-columns:1fr;gap:36px}
  .metrics{grid-template-columns:repeat(3,1fr)}
  .metrics div:nth-child(3){border-right:none}
  .metrics div:nth-child(n+4){border-top:1px solid var(--panel-line)}
  .fgrid{grid-template-columns:1fr 1fr;gap:34px}
}
@media(max-width:760px){
  :root{--gut:20px}
  nav{display:none}
  section{padding:66px 0}
  .hero{padding:48px 0 0}
  .strip{grid-template-columns:1fr 1fr;margin-top:44px}
  .strip div:nth-child(2){border-right:none}
  .strip div:nth-child(n+3){border-top:1px solid var(--grid)}
  .metrics{grid-template-columns:1fr 1fr}
  .metrics div:nth-child(2n){border-right:none}
  .metrics div:nth-child(n+3){border-top:1px solid var(--panel-line)}
  .panel-top,.curvewrap,.tbl-head,.tblscroll,.panel-cta{padding-left:22px;padding-right:22px}
  .offers{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .btn.big{width:100%;justify-content:center}
}

/* ============================================================
   SLOGAN — 「先见，先行」/ "See first. Move first."
   短句 = 大字。首屏视觉重量交给标语和右侧图，不靠长文案。
   ============================================================ */
.slogan{margin-bottom:4px}
.slogan.han{
  font-size:clamp(2.9rem, 9vw, 6.2rem);
  letter-spacing:.01em;
  line-height:1.16;
  font-weight:800;
}
.slogan.en{
  font-size:clamp(2.7rem, 7.4vw, 5.4rem);
  letter-spacing:-.045em;
  line-height:.96;
  font-weight:800;
}
.hero .lede{margin-top:30px}

/* ---------- 语言切换 ---------- */
.hact{display:flex;align-items:center;gap:20px;flex:none}
.langsw{
  display:flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.06em;
}
.langsw a{color:var(--ink-soft);text-decoration:none;padding:3px 2px;transition:color .18s}
.langsw a:hover{color:var(--ink)}
.langsw a.cur{color:var(--ink);font-weight:700;border-bottom:1.5px solid var(--cobalt)}
.langsw span{color:var(--grid)}

/* ---------- 页脚标语 ---------- */
.fsl{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;
  color:#4A66F0;margin-bottom:12px;
}

@media(max-width:760px){
  .hact{gap:12px}
  .hbar .btn{padding:9px 14px;font-size:.8rem}
  .slogan.han{font-size:clamp(2.4rem,12vw,3.4rem)}
  .slogan.en{font-size:clamp(2.2rem,11vw,3.2rem)}
}