/* ============================================================
   小虹桥跨境 — 门户 style.css
   语言：暖奶油纸面 · 可可墨块 · 电光绿战力 · 焦糖橙 kicker
   （承接海报视觉，落成 editorial landing）
   ============================================================ */

:root {
  --paper:        #f3ead6;   /* 海报奶油底 */
  --paper-soft:   #f8f1e2;
  --paper-card:   #fffaf0;
  --ink:          #16221a;   /* 深森林墨 */
  --ink-2:        #2b3a30;
  --ink-dim:      #55605a;
  --ink-soft:     #8b9089;
  --line:         #e2d7bf;
  --line-soft:    #ece3cf;
  --green:        #4ade5f;   /* 电光绿 满血 */
  --green-deep:   #16a34a;
  --green-ink:    #0c3d1f;
  --green-soft:   #d9f5dd;
  --orange:       #f0602e;   /* 焦糖橙 kicker */
  --night:        #10190f;   /* 墨黑块 */
  --night-2:      #182619;
  --on-dark:      #f2ecdd;
  --on-dark-dim:  #a9b6a5;
  --font-display: "Fraunces", "Noto Serif SC", Georgia, serif;
  --font-hei:     "Noto Serif SC", "Songti SC", serif;
  --font-sans:    "DM Sans", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono:    ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --max-w:        1160px;
  --nav-h:        66px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: var(--nav-h); }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
strong, b { font-weight: 700; }
em { font-style: normal; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }
@media (max-width: 720px){ .container { padding: 0 22px; } }

/* ---- shared type ---- */
.eyebrow {
  font-weight: 700; font-size: 12.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--orange);
  display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green-deep); box-shadow: 0 0 0 3px var(--green-soft); }
.eyebrow-light { color: #ffb37a; }
.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(30px, 4.4vw, 52px); line-height: 1.14;
  color: var(--ink); letter-spacing: -.01em; margin-bottom: 20px;
}
.section-intro { font-size: 18px; color: var(--ink-dim); max-width: 620px; margin-bottom: 8px; }

/* ---- reveal ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .reveal { opacity:1; transform:none; } html{scroll-behavior:auto;} }

/* ============ NAV ============ */
.nav {
  position: fixed; inset: 0 0 auto 0; height: var(--nav-h); z-index: 50;
  display: flex; align-items: center;
  background: rgba(243,234,214,.72); backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(243,234,214,.9); }
.nav-inner { max-width: var(--max-w); width: 100%; margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-display); font-weight: 700; font-size: 21px; letter-spacing: -.01em; }
.nav-logo span { color: var(--green-deep); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 14.5px; font-weight: 500; color: var(--ink-dim); transition: color .2s; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  font-size: 14px; font-weight: 700; padding: 9px 18px; border-radius: 999px;
  background: var(--ink); color: var(--paper); transition: transform .15s, background .2s;
}
.nav-cta:hover { background: var(--green-ink); transform: translateY(-1px); }
@media (max-width: 720px){ .nav-inner { padding: 0 22px; } .nav-links { display: none; } }

/* ============ HERO ============ */
.hero {
  position: relative; padding: calc(var(--nav-h) + 76px) 40px 84px;
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center;
}
.hero-glow {
  position: absolute; top: -10%; right: -6%; width: 620px; height: 620px; z-index: 0;
  background: radial-gradient(closest-side, rgba(74,222,95,.28), rgba(74,222,95,0) 70%);
  filter: blur(6px); pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; }
.hero-eyebrow { margin-bottom: 26px; }
.hero-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(38px, 6vw, 74px); line-height: 1.06; letter-spacing: -.02em; color: var(--ink);
}
.mark-token {
  position: relative; display: inline-block; white-space: nowrap;
  color: var(--green-ink); padding: 0 .18em; transform: rotate(-1.5deg);
}
.mark-token::before {
  content: ""; position: absolute; inset: 8% -.05em 6%; z-index: -1; border-radius: 8px;
  background: var(--green); box-shadow: 3px 3px 0 var(--orange);
}
.hero-sub { margin: 26px 0 32px; font-size: clamp(17px, 2vw, 20px); color: var(--ink-dim); max-width: 30em; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; font-weight: 700; font-size: 15.5px;
  padding: 14px 26px; border-radius: 999px; transition: transform .15s, box-shadow .2s, background .2s; }
.btn-primary { background: var(--green-deep); color: #fff; box-shadow: 0 8px 22px -8px rgba(22,163,74,.6); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -10px rgba(22,163,74,.7); }
.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.hero-foot { margin-top: 28px; font-size: 13.5px; color: var(--ink-soft); font-weight: 500; }
.mobile-br { display: none; }

/* hero card (AI 运营官 面板) */
.hero-card {
  position: relative; z-index: 2; justify-self: end; width: 100%; max-width: 340px;
  background: var(--night); border-radius: 22px; padding: 20px; color: var(--on-dark);
  box-shadow: 0 30px 60px -24px rgba(16,25,15,.6), 0 0 0 1px rgba(74,222,95,.14) inset;
  transform: rotate(1.4deg);
}
.hero-card-badge {
  display: inline-block; background: var(--green); color: var(--green-ink);
  font-weight: 800; font-size: 13px; letter-spacing: .04em; padding: 6px 14px; border-radius: 8px;
  box-shadow: 2px 2px 0 var(--orange); margin-bottom: 16px;
}
.hero-card-body { display: flex; flex-direction: column; gap: 12px; }
.hcline { display: flex; align-items: center; gap: 11px; font-size: 14px; color: var(--on-dark-dim); }
.hcdot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.hcdot.on { background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2.4s ease-in-out infinite; }
.hcdot.warn { background: #f5b642; box-shadow: 0 0 8px #f5b642; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.hcbar { height: 7px; border-radius: 999px; background: rgba(255,255,255,.1); margin-top: 6px; overflow: hidden; }
.hcbar i { display: block; height: 100%; background: linear-gradient(90deg, var(--green-deep), var(--green)); border-radius: 999px; }
.hccap { margin-top: 4px; font-size: 12.5px; color: var(--on-dark-dim); text-align: right; font-weight: 600; }

@media (max-width: 880px){
  .hero { grid-template-columns: 1fr; gap: 40px; padding-bottom: 60px; }
  .hero-card { justify-self: start; max-width: 320px; transform: rotate(1deg); }
}
@media (max-width: 720px){ .hero { padding-left: 22px; padding-right: 22px; } .mobile-br { display: inline; } }

/* ============ 战力条 ============ */
.strip { background: var(--night); color: var(--on-dark); }
.strip-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 34px 40px;
  display: flex; align-items: center; gap: 28px;
}
.strip-k {
  flex: none; font-family: var(--font-display); font-weight: 800; font-size: 22px;
  color: var(--green); background: rgba(74,222,95,.12); padding: 8px 16px; border-radius: 10px;
  border: 1px solid rgba(74,222,95,.3);
}
.strip-inner p { font-size: clamp(16px, 2vw, 20px); color: var(--on-dark-dim); }
.strip-inner strong { color: #fff; }
@media (max-width: 720px){ .strip-inner { flex-direction: column; align-items: flex-start; gap: 16px; padding: 28px 22px; } }

/* ============ 四大能力 ============ */
.power { padding: 96px 0 100px; }
.power .section-title { margin-top: 4px; }
.power .section-intro { margin-bottom: 52px; }
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: var(--paper-card); border: 1px solid var(--line); border-radius: 20px;
  padding: 34px 32px 32px; position: relative; overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 30px; width: 4px; height: 40px;
  background: var(--green); border-radius: 0 4px 4px 0;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 26px 46px -26px rgba(22,34,26,.32); border-color: var(--green); }
.card-no {
  font-family: var(--font-display); font-weight: 800; font-size: 40px; line-height: 1;
  color: var(--ink); opacity: .16; margin-bottom: 8px;
}
.card h3 { font-family: var(--font-display); font-weight: 700; font-size: 25px; letter-spacing: -.01em; margin-bottom: 8px; }
.card-lead { color: var(--ink-dim); font-size: 15.5px; margin-bottom: 18px; }
.card-list li { position: relative; padding-left: 22px; font-size: 15px; color: var(--ink-2); margin-bottom: 9px; }
.card-list li::before {
  content: ""; position: absolute; left: 2px; top: .62em; width: 8px; height: 8px;
  border-radius: 2px; background: var(--green); transform: rotate(45deg);
}
@media (max-width: 760px){ .cards { grid-template-columns: 1fr; } .power { padding: 72px 0; } }

/* ============ 怎么做到的 ============ */
.how { background: var(--night); color: var(--on-dark); padding: 96px 0 100px; }
.how-title {
  font-family: var(--font-display); font-weight: 700; color: var(--on-dark);
  font-size: clamp(28px, 4vw, 48px); line-height: 1.16; margin-bottom: 52px;
}
.how-title em { color: var(--green); position: relative; }
.how-title em::after { content:""; position:absolute; left:0; right:0; bottom:6px; height:8px; background:rgba(74,222,95,.22); z-index:-1; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.how-grid-2 { grid-template-columns: repeat(2, 1fr); }
.how-item {
  background: var(--night-2); border: 1px solid rgba(255,255,255,.07); border-radius: 18px; padding: 30px 26px;
  transition: transform .25s, border-color .25s;
}
.how-item:hover { transform: translateY(-4px); border-color: rgba(74,222,95,.35); }
.how-icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  font-size: 22px; background: rgba(74,222,95,.12); color: var(--green); margin-bottom: 18px;
}
.how-item h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; font-family: var(--font-display); }
.how-item p { font-size: 15px; color: var(--on-dark-dim); }

.caps { margin-top: 44px; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px; padding: 30px 30px 28px; }
.tools-k { font-weight: 700; font-size: 13px; letter-spacing: .08em; color: var(--green); margin-bottom: 22px; }
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 26px; }
.cap { padding-left: 16px; border-left: 2px solid rgba(74,222,95,.35); }
.cap h4 { font-size: 15.5px; font-weight: 700; color: #fff; margin-bottom: 7px; letter-spacing: .01em; }
.cap p { font-size: 14px; color: var(--on-dark-dim); line-height: 1.62; }
.cap-guard { border-left-color: var(--orange); }
.cap-guard h4 { color: #ffb37a; }
.tools-note { margin-top: 26px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.08);
  font-size: 14px; color: var(--on-dark-dim); }
@media (max-width: 860px){ .cap-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .cap-grid { grid-template-columns: 1fr; } }
@media (max-width: 820px){ .how-grid, .how-grid-2 { grid-template-columns: 1fr; } .how { padding: 72px 0; } }

/* ============ 满血 Token ============ */
.token { padding: 100px 0; background: linear-gradient(180deg, var(--paper), var(--paper-soft)); }
.token-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.token-lead { font-size: 18px; color: var(--ink-dim); margin-bottom: 26px; max-width: 32em; }
.token-points { margin-bottom: 28px; }
.token-points li { position: relative; padding-left: 30px; font-size: 16px; color: var(--ink-2); margin-bottom: 13px; }
.token-points li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; margin-top: 3px;
  font-size: 12px; font-weight: 800; color: #fff; background: var(--green-deep);
  border-radius: 6px; display: grid; place-items: center;
}
.token-pay {
  background: var(--paper-card); border: 1.5px dashed var(--green-deep); border-radius: 14px;
  padding: 16px 20px; font-size: 15px; color: var(--ink-2);
}
.token-pay strong { color: var(--green-ink); }
.pay-pill {
  display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: .06em;
  color: var(--green-ink); background: var(--green); padding: 3px 10px; border-radius: 999px; margin-right: 10px;
  vertical-align: middle;
}
/* gauge */
.token-visual { justify-self: center; width: 100%; max-width: 360px; }
.gauge {
  background: var(--night); border-radius: 24px; padding: 40px 34px; color: var(--on-dark);
  text-align: center; box-shadow: 0 30px 60px -28px rgba(16,25,15,.55), 0 0 0 1px rgba(74,222,95,.14) inset;
}
.gauge-label { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--on-dark-dim); font-weight: 700; }
.gauge-num {
  font-family: var(--font-display); font-weight: 800; font-size: 64px; line-height: 1.1; margin: 8px 0 20px;
  color: var(--green); text-shadow: 0 0 30px rgba(74,222,95,.4);
}
.gauge-track { height: 12px; border-radius: 999px; background: rgba(255,255,255,.1); overflow: hidden; }
.gauge-track i { display: block; height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--green-deep), var(--green)); border-radius: 999px;
  box-shadow: 0 0 18px rgba(74,222,95,.7); }
.gauge-foot { margin-top: 18px; font-size: 13.5px; color: var(--on-dark-dim); font-weight: 600; }
@media (max-width: 820px){ .token-grid { grid-template-columns: 1fr; gap: 40px; } .token { padding: 72px 0; } }

/* ============ 技术细节（spec sheet） ============ */
.tech { padding: 96px 0 100px; background: var(--paper-soft); border-top: 1px solid var(--line); }
.tech .section-intro { margin-bottom: 20px; }
.tech-arch {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px;
  font-family: var(--font-mono); font-size: 13.5px; margin: 30px 0 44px;
}
.ta-node { background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; font-weight: 500; white-space: nowrap; }
.ta-arrow { color: var(--green-deep); font-weight: 700; }
.ta-tail { color: var(--ink-soft); margin-left: 4px; }
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech-card {
  background: var(--paper-card); border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px;
}
.tc-k { font-family: var(--font-mono); font-size: 12.5px; color: var(--green-deep); font-weight: 600; margin-bottom: 12px; }
.tech-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 21px; margin-bottom: 12px; letter-spacing: -.01em; }
.tc-desc { font-size: 14.5px; color: var(--ink-dim); margin-bottom: 16px; }
.tc-desc code { font-family: var(--font-mono); font-size: 13px; background: var(--green-soft); color: var(--green-ink); padding: 1px 6px; border-radius: 5px; }
.tc-list { border-top: 1px dashed var(--line); padding-top: 14px; margin-bottom: 16px; }
.tc-list li { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2); line-height: 1.5; padding: 5px 0; border-bottom: 1px dashed var(--line-soft); }
.tc-list li:last-child { border-bottom: 0; }
.tc-list b { font-family: var(--font-sans); font-weight: 700; color: var(--green-deep); margin-right: 2px; }
.tc-note { font-size: 13px; color: var(--ink-soft); line-height: 1.6; }
@media (max-width: 900px){ .tech-grid { grid-template-columns: 1fr; } .tech { padding: 72px 0; } }

/* ============ 分水岭 ============ */
.who { padding: 92px 0; }
.who-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.who-side { border-radius: 20px; padding: 34px 32px; }
.who-dim { background: var(--paper-soft); border: 1px solid var(--line); }
.who-lit { background: var(--night); color: var(--on-dark); box-shadow: 0 24px 50px -30px rgba(16,25,15,.5); }
.who-head { font-family: var(--font-display); font-weight: 700; font-size: 21px; margin-bottom: 20px; }
.who-dim .who-head { color: var(--ink-soft); }
.who-lit .who-head { color: var(--green); }
.who-side ul li { position: relative; padding-left: 26px; font-size: 15.5px; margin-bottom: 13px; }
.who-dim li { color: var(--ink-dim); }
.who-lit li { color: var(--on-dark); }
.who-dim li::before { content: "—"; position: absolute; left: 0; color: var(--ink-soft); }
.who-lit li::before { content: "→"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.who-note { text-align: center; margin-top: 36px; font-family: var(--font-display); font-weight: 700;
  font-size: clamp(22px, 3vw, 32px); color: var(--ink); }
@media (max-width: 720px){ .who-grid { grid-template-columns: 1fr; } .who { padding: 68px 0; } }

/* ============ CONTACT ============ */
.contact { padding: 40px 0 100px; }
.contact-card {
  background: var(--night); color: var(--on-dark); border-radius: 26px;
  padding: 54px 52px; display: grid; grid-template-columns: 1.4fr .9fr; gap: 48px; align-items: center;
  position: relative; overflow: hidden;
  box-shadow: 0 40px 80px -34px rgba(16,25,15,.6);
}
.contact-card::before {
  content: ""; position: absolute; top: -40%; left: -10%; width: 460px; height: 460px;
  background: radial-gradient(closest-side, rgba(74,222,95,.22), transparent 70%); pointer-events: none;
}
.contact-copy { position: relative; }
.contact-copy .eyebrow { color: var(--green); }
.contact-title { font-family: var(--font-display); font-weight: 700; color: #fff;
  font-size: clamp(26px, 3.6vw, 40px); line-height: 1.14; margin-bottom: 16px; }
.contact-sub { font-size: 16px; color: var(--on-dark-dim); max-width: 34em; margin-bottom: 18px; }
.contact-meta { font-size: 13.5px; color: var(--green); font-weight: 600; }
.contact-qr { position: relative; text-align: center; }
.contact-qr img { width: 220px; height: 220px; border-radius: 16px; margin: 0 auto 12px; background: #fff; padding: 10px; box-shadow: 0 16px 40px -18px rgba(0,0,0,.5); }
.contact-qr p { font-size: 14px; font-weight: 600; color: var(--on-dark-dim); }
@media (max-width: 760px){
  .contact-card { grid-template-columns: 1fr; padding: 40px 28px; gap: 32px; text-align: center; }
  .contact-sub { margin-left: auto; margin-right: auto; }
  .contact-copy .eyebrow { justify-content: center; }
}

/* ============ FOOTER ============ */
.footer { background: var(--paper-soft); border-top: 1px solid var(--line); padding: 44px 0; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; }
.footer-brand { font-family: var(--font-display); font-weight: 700; font-size: 22px; }
.footer-brand span { color: var(--green-deep); }
.footer-tag { font-size: 14px; color: var(--ink-dim); }
.footer-legal { font-size: 13px; color: var(--ink-soft); display: flex; gap: 10px; align-items: center; }
.footer-legal a:hover { color: var(--green-deep); }