/* ============================================================
   GLOBAL RESET & VARIABLES
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:#1a2533;background:#fff;
  line-height:1.7;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
ul{list-style:none}

/* ---------- 通用辅助 ---------- */
.container{width:min(1200px,92%);margin:0 auto}
.btn{
  display:inline-flex;align-items:center;gap:.45rem;
  padding:.82rem 2rem;border-radius:999px;font-weight:700;font-size:.95rem;
  border:none;cursor:pointer;letter-spacing:.02em;transition:transform .22s,box-shadow .25s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(0,0,0,.18)}
.btn-primary{background:#1a73ff;color:#fff}
.btn-primary:hover{background:#155de0}
.btn-outline{
  background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55);
}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.10)}
.btn-white{background:#fff;color:#0d1b2a}
.btn-white:hover{background:#eef4ff}

.section-label{
  text-transform:uppercase;letter-spacing:.18em;font-size:.72rem;font-weight:800;opacity:.6;margin-bottom:.55rem;
}
h1,h2,h3,h4{line-height:1.25;font-weight:800}
p{opacity:.88}

/* ========== NAV  (共享) ========== */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:900;
  padding:1rem 0;transition:background .35s,box-shadow .35s;
}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.site-logo{font-size:1.35rem;font-weight:900;letter-spacing:.04em;display:flex;align-items:center;gap:.45rem}
.site-logo .dot{width:10px;height:10px;border-radius:50%;background:#1a73ff;display:inline-block}
.nav-links{display:flex;gap:2rem;font-size:.88rem;font-weight:600}
.nav-links a{opacity:.78;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;border-radius:2px;background:currentColor;transition:width .3s}
.nav-links a:hover{opacity:1}
.nav-links a:hover::after{width:100%}
.nav-cta{font-size:.84rem;padding:.55rem 1.4rem !important;border-radius:999px;font-weight:700}
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.6rem;cursor:pointer}

/* ============================================================
   PAGE #home  ——  对角切割 · 冰蓝白
   ============================================================ */
body#home{background:#f6faff;color:#0d1b2a}
body#home .site-header{background:transparent}
body#home .site-header.scrolled{background:rgba(13,27,42,.92);backdrop-filter:blur(12px);box-shadow:0 2px 24px rgba(0,0,0,.25)}
body#home .nav-links a{color:rgba(255,255,255,.9)}
body#home .site-logo{color:#fff}
body#home .nav-cta{background:rgba(255,255,255,.15);color:#fff}

/* Hero 对角切割 */
.hero{
  position:relative;
  min-height:100vh;
  display:grid;align-items:center;
  background:linear-gradient(135deg,#0a1628 0%,#0d2652 45%,#1043a8 100%);
  overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 88%,0 100%);
  padding-top:6rem;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(circle at 20% 80%,rgba(26,115,255,.25) 0%,transparent 50%),
    radial-gradient(circle at 75% 20%,rgba(64,156,255,.18) 0%,transparent 40%);
}
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;
  position:relative;z-index:2;
  container-type:inline-size;
}
.hero-text{color:#fff}
.hero-text h1{font-size:clamp(2.2rem,5vw,3.8rem);margin-bottom:1.2rem}
.hero-text h1 span{color:#5ea8ff}
.hero-text p{font-size:1.08rem;opacity:.82;max-width:480px;margin-bottom:2rem}
.hero-btns{display:flex;flex-wrap:wrap;gap:.85rem}
.hero-visual{
  position:relative;display:flex;justify-content:center;
}
/* 装饰性"浮动卡片" */
.float-card{
  background:rgba(255,255,255,.07);backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;padding:1.8rem 2rem;color:#fff;width:340px;
  box-shadow:0 30px 80px rgba(0,0,0,.35);
  animation:floaty 5s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.float-card .coin-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.9rem}
.float-card .coin-icon{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,#f3ba2f,#f5d06a);
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:.8rem;color:#5c4300;
}
.float-card .price{font-size:1.3rem;font-weight:800}
.float-card .change{font-size:.78rem;color:#4cdb8b;font-weight:700}
.float-card .bar-track{height:6px;border-radius:3px;background:rgba(255,255,255,.1);margin-top:.5rem;overflow:hidden}
.float-card .bar-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,#1a73ff,#5ea8ff);width:68%}
.mini-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;opacity:.5;margin-top:1.1rem}

/* ---------- Feature strip ---------- */
.features{padding:6rem 0 4rem;background:#fff}
.features-top{text-align:center;margin-bottom:3.5rem}
.features-top h2{font-size:clamp(1.6rem,3vw,2.4rem);color:#0d1b2a;margin-bottom:.6rem}
.features-top p{max-width:600px;margin:0 auto;opacity:.65}
.feature-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:2rem;
}
.feat-card{
  background:#f6faff;border-radius:18px;padding:2.2rem 1.8rem;
  border:1px solid rgba(26,115,255,.06);
  transition:transform .3s,box-shadow .3s;
}
.feat-card:hover{transform:translateY(-6px);box-shadow:0 16px 48px rgba(26,115,255,.09)}
.feat-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,#1a73ff,#5ea8ff);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:1.2rem;font-size:1.3rem;color:#fff;
}
.feat-card h3{font-size:1.1rem;margin-bottom:.5rem}
.feat-card p{font-size:.9rem;opacity:.66}

/* ---------- Page-nav intro ---------- */
.pagenav-intro{padding:5rem 0;background:linear-gradient(180deg,#fff 0%,#edf3ff 100%)}
.pagenav-intro h2{font-size:clamp(1.5rem,2.8vw,2.2rem);margin-bottom:2.5rem;text-align:center;color:#0d1b2a}
.pagenav-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.6rem}
.pn-card{
  background:#fff;border-radius:16px;padding:2rem 1.6rem;
  border-left:4px solid #1a73ff;
  box-shadow:0 4px 24px rgba(0,0,0,.05);
  transition:transform .25s;
}
.pn-card:hover{transform:translateY(-4px)}
.pn-card h3{font-size:1.05rem;margin-bottom:.4rem;color:#0d1b2a}
.pn-card p{font-size:.88rem;opacity:.62;margin-bottom:1rem}
.pn-card a{font-size:.85rem;font-weight:700;color:#1a73ff}

/* ---------- FAQ ---------- */
.faq-section{padding:5rem 0;background:#fff}
.faq-section h2{text-align:center;font-size:clamp(1.5rem,2.8vw,2.2rem);margin-bottom:2.8rem;color:#0d1b2a}
.faq-list{max-width:780px;margin:0 auto}
.faq-item{
  border:1px solid #e4ecf8;border-radius:12px;margin-bottom:1rem;overflow:hidden;
  background:#fafdff;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:1.15rem 1.5rem;font-weight:700;font-size:.97rem;cursor:pointer;
  background:none;border:none;text-align:left;color:#0d1b2a;
}
.faq-q .arrow{transition:transform .3s;opacity:.45;font-size:1.1rem}
.faq-item.open .faq-q .arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a div{padding:0 1.5rem 1.2rem;font-size:.91rem;opacity:.72;line-height:1.75}

/* footer */
.site-footer{
  background:#0a1628;color:rgba(255,255,255,.55);font-size:.82rem;
  padding:2.5rem 0;text-align:center;
}
.site-footer a{color:rgba(255,255,255,.75)}
.site-footer a:hover{color:#5ea8ff}

/* responsive */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;text-align:center;padding-bottom:4rem}
  .hero-text p{margin-left:auto;margin-right:auto}
  .hero-btns{justify-content:center}
  .hero-visual{display:none}
}
@media(max-width:640px){
  .mobile-toggle{display:block}
  .nav-links{
    position:fixed;top:0;right:-100%;width:72%;max-width:300px;height:100vh;
    flex-direction:column;padding:5rem 2rem 2rem;gap:1.6rem;
    background:rgba(10,22,40,.97);backdrop-filter:blur(14px);
    transition:right .35s;z-index:899;
  }
  .nav-links.open{right:0}
}

/* ============================================================
   PAGE #spot  ——  深蓝暗板 · 左sidebar + 右面板
   ============================================================ */
body#spot{background:#080e1b;color:#c8daf5}
.spot-hero{
  padding:9rem 0 4rem;
  background:linear-gradient(165deg,#080e1b 0%,#0d1f3c 60%,#0f2d5e 100%);
}
.spot-hero .container{display:grid;grid-template-columns:280px 1fr;gap:3rem;align-items:start}
.sidebar-nav{
  position:sticky;top:100px;
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);
  border-radius:16px;padding:1.5rem;
}
.sidebar-nav h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:rgba(255,255,255,.35);margin-bottom:1rem}
.sidebar-nav a{
  display:block;padding:.55rem .8rem;border-radius:8px;font-size:.9rem;
  color:rgba(255,255,255,.6);margin-bottom:.25rem;transition:background .2s,color .2s;
}
.sidebar-nav a:hover,.sidebar-nav a.active{background:rgba(26,115,255,.15);color:#5ea8ff}
.spot-main h1{font-size:clamp(1.8rem,3.5vw,2.8rem);color:#fff;margin-bottom:.6rem}
.spot-main .tag{display:inline-block;padding:.25rem .8rem;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:1.2rem;background:rgba(26,115,255,.15);color:#5ea8ff}
.spot-main > p{opacity:.7;max-width:640px;margin-bottom:2.5rem}
.panel{
  background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.06);
  border-radius:16px;padding:2rem;margin-bottom:2rem;
}
.panel h2{color:#fff;font-size:1.15rem;margin-bottom:1rem;padding-bottom:.7rem;border-bottom:1px solid rgba(255,255,255,.06)}
.step-rows{display:flex;flex-direction:column;gap:1.4rem}
.step-r{display:flex;gap:1rem;align-items:flex-start}
.step-num{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#1a73ff,#5ea8ff);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:.85rem;color:#fff;
}
.step-r h4{color:#fff;font-size:.95rem;margin-bottom:.2rem}
.step-r p{font-size:.86rem;opacity:.55}
table.spot-table{width:100%;border-collapse:collapse;font-size:.88rem}
table.spot-table th{text-align:left;padding:.7rem 1rem;color:rgba(255,255,255,.35);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;border-bottom:1px solid rgba(255,255,255,.06)}
table.spot-table td{padding:.75rem 1rem;border-bottom:1px solid rgba(255,255,255,.04);opacity:.78}
.warn-box{
  background:rgba(255,170,50,.08);border-left:4px solid #ffaa32;
  border-radius:0 10px 10px 0;padding:1rem 1.3rem;font-size:.88rem;opacity:.85;margin-top:1.5rem;
}
@media(max-width:860px){
  .spot-hero .container{grid-template-columns:1fr}
  .sidebar-nav{display:none}
}

/* ============================================================
   PAGE #futures  ——  靛紫蓝 · 全屏snap区块
   ============================================================ */
body#futures{
  background:#070d1a;color:#c8daf5;
  scroll-snap-type:y mandatory;overflow-y:scroll;
}
#futures .site-header.scrolled{background:rgba(7,13,26,.92);backdrop-filter:blur(12px)}
#futures .nav-links a{color:rgba(255,255,255,.85)}
#futures .site-logo{color:#fff}
.snap-section{
  min-height:100vh;display:flex;align-items:center;
  scroll-snap-align:start;position:relative;overflow:hidden;
  padding:7rem 0 4rem;
}
.snap-section::after{
  content:'';position:absolute;width:420px;height:420px;border-radius:50%;
  filter:blur(120px);opacity:.18;pointer-events:none;
}
.snap-1{background:linear-gradient(160deg,#070d1a,#111b38,#0f2870)}
.snap-1::after{background:#3b5bdb;top:-10%;right:-8%}
.snap-2{background:linear-gradient(180deg,#0b1430,#0d1f44)}
.snap-2::after{background:#7c3aed;bottom:-12%;left:-6%}
.snap-3{background:linear-gradient(200deg,#070d1a,#101d3d)}
.snap-3::after{background:#1a73ff;top:20%;right:-10%}
.snap-inner{width:min(1100px,92%);margin:0 auto;position:relative;z-index:2}
.snap-tag{display:inline-block;padding:.2rem .7rem;border-radius:8px;font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:1rem}
.snap-1 .snap-tag{background:rgba(59,91,219,.18);color:#8eaafe}
.snap-2 .snap-tag{background:rgba(124,58,237,.15);color:#c4b5fd}
.snap-3 .snap-tag{background:rgba(26,115,255,.15);color:#93c5fd}
.snap-inner h1{font-size:clamp(2rem,4.5vw,3.4rem);color:#fff;margin-bottom:1rem}
.snap-inner h2{font-size:clamp(1.5rem,3vw,2.2rem);color:#fff;margin-bottom:.8rem}
.snap-inner p{opacity:.7;max-width:580px;line-height:1.8;margin-bottom:1.6rem}
.snap-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-top:2rem}
.snap-card{
  background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.06);
  border-radius:16px;padding:1.6rem;
  transition:transform .3s;
}
.snap-card:hover{transform:translateY(-4px)}
.snap-card h4{color:#fff;margin-bottom:.4rem;font-size:.98rem}
.snap-card p{font-size:.86rem;opacity:.55;margin:0}
.circle-stat{
  width:110px;height:110px;border-radius:50%;
  background:conic-gradient(#3b5bdb 0% 75%,rgba(255,255,255,.08) 75% 100%);
  display:flex;align-items:center;justify-content:center;
  flex-direction:column;color:#fff;font-weight:800;font-size:1.2rem;
  box-shadow:0 0 40px rgba(59,91,219,.25);
}
.circle-stat small{font-size:.6rem;opacity:.5;font-weight:500}
@media(max-width:700px){
  body#futures{scroll-snap-type:none}
}

/* ============================================================
   PAGE #earn  ——  天蓝冰白 · 斜切时间线
   ============================================================ */
body#earn{background:#f2f8ff;color:#0d2137}
.earn-hero{
  position:relative;
  padding:9rem 0 7rem;
  background:linear-gradient(142deg,#0d2652 0%,#1053b8 50%,#1a8cff 100%);
  clip-path:polygon(0 0,100% 0,100% 82%,0 100%);
  color:#fff;
}
.earn-hero h1{font-size:clamp(2rem,4vw,3.2rem);margin-bottom:.8rem}
.earn-hero p{opacity:.8;max-width:560px;font-size:1.05rem}
.timeline{position:relative;padding:5rem 0 3rem}
.timeline::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,#1a73ff,#5ea8ff,transparent);
  transform:translateX(-50%);
}
@media(max-width:820px){.timeline::before{left:28px}}
.tl-row{display:flex;justify-content:flex-end;padding-right:calc(50% + 3rem);position:relative;margin-bottom:3.5rem}
.tl-row:nth-child(even){justify-content:flex-start;padding-right:0;padding-left:calc(50% + 3rem)}
@media(max-width:820px){
  .tl-row,.tl-row:nth-child(even){justify-content:flex-start;padding-right:0;padding-left:60px}
}
.tl-dot{
  position:absolute;left:50%;top:6px;width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid #1a73ff;transform:translateX(-50%);
  z-index:2;box-shadow:0 0 0 6px rgba(26,115,255,.12);
}
@media(max-width:820px){.tl-dot{left:28px}}
.tl-card{
  background:#fff;border-radius:16px;padding:2rem;border:1px solid #e4ecf8;
  box-shadow:0 4px 30px rgba(26,115,255,.06);max-width:440px;
}
.tl-card h3{color:#0d2137;margin-bottom:.35rem;font-size:1.05rem}
.tl-card .tl-num{
  font-size:2.6rem;font-weight:900;color:#1a73ff;opacity:.12;
  position:absolute;right:2rem;top:1rem;line-height:1;
}
.tl-card p{font-size:.9rem;opacity:.65}
.earn-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.6rem;padding-bottom:5rem;
}
.earn-box{
  background:#fff;border-radius:18px;padding:2rem 1.6rem;
  border-top:4px solid #1a73ff;
  box-shadow:0 4px 24px rgba(0,0,0,.04);
}
.earn-box h3{font-size:1.05rem;color:#0d2137;margin-bottom:.4rem}
.earn-box p{font-size:.88rem;opacity:.6;margin-bottom:.8rem}
.earn-box .yield{
  font-size:1.6rem;font-weight:900;color:#1a73ff;
}
.earn-box .yield small{font-size:.7rem;opacity:.5;font-weight:500}

/* ============================================================
   PAGE #security  ——  纯白·深蓝强调 · 垂直步骤线
   ============================================================ */
body#security{background:#fff;color:#0d1b2a}
.sec-hero{
  padding:9rem 0 5rem;text-align:center;
  background:linear-gradient(180deg,#f0f6ff 0%,#fff 100%);
}
.sec-hero h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:.6rem}
.sec-hero p{max-width:580px;margin:0 auto;opacity:.6}
.sec-center{width:min(760px,92%);margin:0 auto;padding:4rem 0 6rem}
.sec-step{display:flex;gap:2rem;margin-bottom:3rem;position:relative}
.sec-step:not(:last-child)::after{
  content:'';position:absolute;left:22px;top:48px;width:2px;bottom:-48px;
  background:linear-gradient(180deg,#1a73ff,#e4ecf8);
}
.sec-circle{
  flex-shrink:0;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,#1a73ff,#5ea8ff);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;color:#fff;font-size:.95rem;
  box-shadow:0 0 0 8px rgba(26,115,255,.08);
}
.sec-body h3{font-size:1.05rem;margin-bottom:.3rem}
.sec-body p{font-size:.91rem;opacity:.63;line-height:1.75}
.sec-body .tip{
  display:inline-block;margin-top:.6rem;padding:.3rem .8rem;border-radius:8px;
  background:#eef4ff;font-size:.78rem;font-weight:700;color:#1a73ff;
}
.checklist{margin-top:.7rem;display:flex;flex-direction:column;gap:.3rem}
.checklist li{font-size:.88rem;opacity:.72;display:flex;align-items:center;gap:.5rem}
.checklist li::before{content:'✓';color:#1a73ff;font-weight:900}

@media(max-width:640px){
  .sec-step{gap:1rem}
}