/* Heurion 官网：与工作台同一套 mantle 风格——深墨绿底、薄荷绿强调、1px 线、直角 */
:root {
  --bg: #06110d; --bg-deep: #040f0b; --panel: #08150f; --raised: #0d1d17;
  --line: #1e2925; --line-strong: #2d3d37;
  --text: #fff; --text-2: rgba(255, 255, 255, .72); --muted: rgba(255, 255, 255, .55); --faint: rgba(255, 255, 255, .32);
  --mint: #00ff93; --mint-ink: #04170f; --green: #06b680; --green-soft: rgba(6, 182, 128, .14); --green-line: rgba(6, 182, 128, .42);
  --warn: #f5b544; --warn-soft: rgba(245, 181, 68, .12);
  --font: "Helvetica Neue", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --wrap: 1200px; --gutter: 32px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
/* 中文标题按短语折行：.nw 内不断开，放不下时整段换到下一行 */
.nw { display: inline-block; }
[hidden] { display: none !important; }
.show-sm { display: none !important; }
h1, h2 { text-wrap: balance; }
h1, h2, h3, p { margin: 0; }
.wrap { max-width: var(--wrap); width: 100%; margin: 0 auto; padding: 0 var(--gutter); }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 18px; border: 1px solid transparent; font-size: 14px; font-weight: 600; letter-spacing: .01em; white-space: nowrap; transition: background .15s, border-color .15s, color .15s; }
.btn.lg { height: 52px; padding: 0 26px; font-size: 16px; }
.btn.mint { background: var(--mint); color: var(--mint-ink); }
.btn.mint:hover { background: #4dffb3; }
.btn.line { border-color: var(--line-strong); color: var(--text); }
.btn.line:hover { border-color: var(--mint); color: var(--mint); }
.btn.ghost { color: var(--text-2); }
.btn.ghost:hover { color: var(--text); }
.btn:focus-visible, .links a:focus-visible, .menu:focus-visible { outline: 2px solid var(--mint); outline-offset: 2px; }

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid transparent; transition: background .2s, border-color .2s; }
.top.scrolled { background: rgba(6, 17, 13, .86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom-color: var(--line); }
.top-row { display: flex; align-items: center; height: 72px; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.mark { width: 26px; height: 24px; }
.word { font-weight: 700; letter-spacing: .22em; font-size: 15px; }
.links { display: flex; gap: 28px; margin-left: 16px; }
.links a { font-size: 14px; color: var(--text-2); transition: color .15s; }
.links a:hover { color: var(--mint); }
.top-cta { margin-left: auto; display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.menu { display: none; width: 40px; height: 40px; border: 1px solid var(--line-strong); background: var(--panel); cursor: pointer; padding: 0; flex-direction: column; align-items: center; justify-content: center; gap: 5px; transition: border-color .15s, background .15s; }
.menu:hover { border-color: var(--mint); }
.menu span { display: block; width: 16px; height: 1.5px; background: var(--text); transition: transform .2s ease, opacity .2s ease; transform-origin: center; }
.menu[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* 小标题 */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 500 12px/1 var(--mono); letter-spacing: .16em; color: var(--mint); margin-bottom: 24px; }
.eyebrow .dot { width: 6px; height: 6px; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.num { font: 500 12px/1 var(--mono); color: var(--faint); letter-spacing: .1em; }

/* Hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.grid-bg { position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px; opacity: .45;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 20%, transparent 75%); }
.hero::after { content: ""; position: absolute; width: 640px; height: 640px; right: -160px; top: -200px; background: radial-gradient(closest-side, rgba(0, 255, 147, .13), transparent); pointer-events: none; }
.hero-row { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 64px; align-items: center; padding-top: 96px; padding-bottom: 120px; }
h1 { font-size: clamp(40px, 5.4vw, 72px); line-height: 1.08; font-weight: 600; letter-spacing: -.02em; }
h1 em { font-style: normal; color: var(--mint); }
.lead { margin-top: 28px; font-size: 18px; line-height: 1.75; color: var(--text-2); max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 24px; list-style: none; padding: 0; margin: 40px 0 0; font-size: 13px; color: var(--muted); }
.trust li { display: flex; align-items: center; gap: 8px; }
.trust li::before { content: ""; width: 10px; height: 6px; border-left: 1.5px solid var(--green); border-bottom: 1.5px solid var(--green); transform: rotate(-45deg) translateY(-2px); }

/* 产品示意 */
.mock { border: 1px solid var(--line-strong); background: var(--panel); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8), 0 0 0 1px rgba(0, 255, 147, .04); }
.mock-bar { display: flex; align-items: center; gap: 6px; height: 40px; padding: 0 14px; border-bottom: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.mock-bar span { width: 8px; height: 8px; background: var(--line-strong); }
.mock-bar b { font-weight: 500; margin-left: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-body { display: grid; grid-template-columns: minmax(0, 1fr) 220px; }
.paper { background: #fff; color: #1b1f1d; margin: 18px; padding: 24px 22px 20px; font: 13.5px/1.8 var(--serif); }
.paper p + p { margin-top: 10px; }
.p-h { font: 600 14px/1.4 var(--font); margin-bottom: 12px; color: #06110d; }
.paper del { color: #c0392b; text-decoration-thickness: 1.5px; }
.paper ins { text-decoration: none; background: rgba(6, 182, 128, .18); border-bottom: 1.5px solid var(--green); }
.paper mark { background: none; border-bottom: 1.5px dotted #8a9a94; color: inherit; }
.paper .flag { background: rgba(245, 181, 68, .28); }
.cite { color: var(--green); font: 600 10px var(--font); margin-left: 1px; }
.refs { margin: 16px 0 0; padding: 12px 0 0 18px; border-top: 1px solid #e3e7e5; font: 11px/1.6 var(--font); color: #59635f; }
.notes { border-left: 1px solid var(--line); padding: 14px 12px; display: flex; flex-direction: column; gap: 8px; }
.note { border: 1px solid var(--line-strong); background: var(--raised); padding: 10px; font-size: 11.5px; line-height: 1.5; color: var(--text-2); }
.note.ai { border-color: var(--green-line); }
.note.warn { border-color: rgba(245, 181, 68, .45); }
.note.img { border-color: rgba(2, 152, 254, .45); }
.note-h { font: 500 10.5px/1 var(--mono); letter-spacing: .08em; margin-bottom: 6px; color: var(--mint); }
.note.warn .note-h { color: var(--warn); }
.note.img .note-h { color: #0298FE; }
.note-act { display: flex; gap: 6px; margin-top: 8px; }
.note-act span { padding: 3px 8px; border: 1px solid var(--line-strong); font-size: 10.5px; }
.note-act .ok { background: var(--mint); border-color: var(--mint); color: var(--mint-ink); font-weight: 600; }

/* 流水线与队列标签 */
.mock-pipeline { display: flex; align-items: center; gap: 6px; padding: 8px 14px; background: var(--bg-deep); border-bottom: 1px solid var(--line); font-size: 11.5px; overflow-x: auto; scrollbar-width: none; }
.pipe-step { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border: 1px solid var(--line-strong); color: var(--muted); border-radius: 2px; font-family: var(--mono); white-space: nowrap; flex-shrink: 0; }
.pipe-step.done { color: var(--green); border-color: var(--green-line); background: rgba(6, 182, 128, .08); }
.pipe-step.active { color: var(--mint-ink); background: var(--mint); border-color: var(--mint); font-weight: 600; }
.cohort-tag { font: 500 11px/1.4 var(--mono); color: #064e3b; background: #ecfdf5; border: 1px solid #a7f3d0; padding: 5px 8px; margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cohort-tag span { font-weight: 700; color: #047857; }

/* 四支柱 */
.pillars { border-bottom: 1px solid var(--line); background: var(--bg-deep); }
.pillar-row { display: grid; grid-template-columns: repeat(4, 1fr); }
.pillar { padding: 40px 28px 44px; border-left: 1px solid var(--line); }
.pillar:last-child { border-right: 1px solid var(--line); }
.pillar h3 { font-size: 18px; font-weight: 600; margin: 18px 0 10px; }
.pillar p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* 通用区块 */
.section { padding: 128px 0; border-bottom: 1px solid var(--line); }
.section.alt { background: var(--bg-deep); }
h2 { font-size: clamp(30px, 3.6vw, 48px); line-height: 1.15; font-weight: 600; letter-spacing: -.015em; max-width: 18em; }

/* 痛点 */
.pains { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 64px; border-top: 1px solid var(--line); }
.pain { padding: 36px 32px 8px 0; display: flex; flex-direction: column; }
.pain + .pain { padding-left: 32px; border-left: 1px solid var(--line); }
.pain h3 { font-size: 22px; font-weight: 600; margin: 16px 0 14px; }
.pain p { color: var(--muted); font-size: 15px; line-height: 1.75; }
.pain .answer { margin-top: auto; padding-top: 24px; color: var(--text-2); }
.pain .answer b { color: var(--mint); font-weight: 600; }
.pain .answer::before { content: ""; display: block; width: 24px; height: 1px; background: var(--green); margin-bottom: 18px; }

/* 能力 */
.caps { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 64px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); counter-reset: cap; }
.cap { position: relative; padding: 32px 28px 40px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .2s; counter-increment: cap; }
.cap::before { content: counter(cap, decimal-leading-zero); font: 500 12px/1 var(--mono); color: var(--faint); letter-spacing: .1em; }
.cap::after { content: ""; position: absolute; left: -1px; top: -1px; width: 0; height: 2px; background: var(--mint); transition: width .3s; }
.cap:hover { background: var(--panel); }
.cap:hover::after { width: calc(100% + 2px); }
.cap h3 { font-size: 18px; font-weight: 600; margin: 40px 0 12px; }
.cap p { font-size: 14px; line-height: 1.75; color: var(--muted); }

/* 路线图 */
#roadmap .lead { margin-top: 20px; }
.road { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 56px; }
@media (min-width: 1080px) {
  .road { grid-template-columns: repeat(5, 1fr); }
}
.road-item { border: 1px solid var(--line); padding: 24px 20px 28px; display: flex; flex-direction: column; transition: border-color .2s, background .2s; }
.road-item h3 { font-size: 18px; font-weight: 600; margin: 22px 0 12px; line-height: 1.35; }
.road-item p { font-size: 13.5px; line-height: 1.7; color: var(--muted); }
.road-item.featured { border-color: var(--mint); background: linear-gradient(180deg, rgba(0, 255, 147, .06), transparent); position: relative; }
.road-item.featured::after { content: ""; position: absolute; top: -1px; left: -1px; right: -1px; height: 3px; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.status { align-self: flex-start; font: 500 11px/1 var(--mono); letter-spacing: .08em; padding: 6px 8px; border: 1px solid var(--line-strong); color: var(--muted); }
.status.live { color: var(--mint-ink); background: var(--mint); border-color: var(--mint); }
.status.soon { color: var(--mint); border-color: var(--green-line); }
.status.milestone { color: var(--mint-ink); background: var(--mint); border-color: var(--mint); font-weight: 700; box-shadow: 0 0 12px rgba(0, 255, 147, .28); }
.road-item:has(.plan) { border-style: dashed; border-color: var(--line-strong); }

/* 步骤 */
.steps { list-style: none; padding: 0; margin: 64px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.steps li { border: 1px solid var(--line); padding: 32px; position: relative; background: linear-gradient(180deg, var(--panel), transparent); }
.steps li:not(:last-child)::after { content: "→"; position: absolute; right: -19px; top: 32px; width: 14px; text-align: center; color: var(--green); font-family: var(--mono); }
.step-n { font: 500 12px/1 var(--mono); letter-spacing: .14em; color: var(--mint); }
.steps h3 { font-size: 22px; font-weight: 600; margin: 32px 0 12px; }
.steps p { color: var(--muted); font-size: 15px; line-height: 1.75; }

/* 安全 */
.sec-row { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: start; }
.sec-copy { position: sticky; top: 112px; }
.sec-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.sec-list li { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.sec-list h3 { font-size: 16px; font-weight: 600; color: var(--mint); }
.sec-list p { font-size: 15px; line-height: 1.75; color: var(--text-2); }
.footnote { margin-top: 56px; font-size: 13px; color: var(--faint); }

/* 合作与数据来源 */
.partners { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 56px; border: 1px solid var(--line); }
.partner { padding: 28px; min-height: 180px; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; transition: background .2s; }
.partner:hover { background: rgba(0, 255, 147, .02); }
.partner + .partner { border-left: 1px solid var(--line); }
.partner-meta { display: flex; flex-direction: column; gap: 14px; }
.partner .tag { font: 500 11px/1 var(--mono); letter-spacing: .14em; color: var(--muted); }
.partner-logos { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.brand-icon { display: inline-flex; align-items: center; opacity: .88; transition: opacity .2s, transform .2s; }
.brand-icon:hover { opacity: 1; transform: translateY(-1px); }
.partner p { font-size: 17px; font-weight: 600; line-height: 1.4; color: var(--text); }

/* 语言切换按钮 */
.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  color: var(--text-2);
  font: 500 12.5px/1 var(--mono);
  letter-spacing: .04em;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
  transition: all .15s;
}
.lang-btn:hover {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--raised);
}
.lang-btn svg { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }

/* 国际化适配：英文排版调优，保持中英文视觉节奏与高度一致 */
html[lang="en"] .links { gap: 18px; }
html[lang="en"] .links a { font-size: 13.5px; }
@media (min-width: 1081px) {
  html[lang="en"] .hero-row {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    gap: 52px;
  }
  html[lang="en"] .mock-body {
    grid-template-columns: minmax(0, 1fr) 225px;
  }
}
html[lang="en"] h1 {
  font-size: clamp(28px, 3.1vw, 40px);
  line-height: 1.18;
  letter-spacing: -.02em;
  max-width: 20em;
}
html[lang="en"] .lead {
  font-size: 15.5px;
  line-height: 1.65;
  max-width: 36em;
}
html[lang="en"] h2 {
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.2;
  max-width: 26em;
}
html[lang="en"] .cta h2 {
  font-size: clamp(28px, 3.6vw, 48px);
}
html[lang="en"] .mock-pipeline {
  padding: 8px 10px;
  gap: 4px;
}
html[lang="en"] .pipe-step {
  font-size: 9.5px;
  padding: 2.5px 5px;
  letter-spacing: -.02em;
}

/* CTA */
.cta { position: relative; overflow: hidden; padding: 120px 0; background: var(--mint); color: var(--mint-ink); }
.cta-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.cta h2 { color: var(--mint-ink); font-size: clamp(32px, 4.4vw, 60px); }
.cta-btn-group { display: flex; gap: 12px; flex-wrap: wrap; }
.cta .btn.mint { background: var(--mint-ink); color: var(--mint); }
.cta .btn.mint:hover { background: #0d2a1e; }
.cta .btn.cta-contact { border: 1.5px solid rgba(4, 23, 15, 0.35); color: var(--mint-ink); background: rgba(4, 23, 15, 0.05); }
.cta .btn.cta-contact:hover { background: rgba(4, 23, 15, 0.12); border-color: var(--mint-ink); }
.cta-act p { margin-top: 14px; font-size: 14px; opacity: .7; }

/* 页脚 */
.foot { padding: 56px 0 32px; background: var(--bg-deep); }
.foot-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.foot-links a:hover { color: var(--mint); }
.foot-base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 12px; color: var(--faint); }

/* 中等桌面端防挤压 (961px - 1120px) */
@media (max-width: 1120px) and (min-width: 961px) {
  .top-row { gap: 16px; }
  .links { gap: 18px; margin-left: 8px; }
}

/* 平板与移动端 (<= 960px) */
@media (max-width: 960px) {
  :root { --gutter: 20px; }
  .hide-sm { display: none !important; }
  .show-sm { display: flex !important; }
  .wrap { width: 100%; }
  .nw { display: inline; white-space: normal; }
  h1, h2, h3, .cta h2 { word-break: break-word; overflow-wrap: break-word; }

  .top-row { height: 64px; gap: 12px; }
  .brand { gap: 8px; }
  .brand .mark { width: 22px; height: 20px; }
  .brand .word { font-size: 14px; letter-spacing: .16em; }
  .lang-btn { height: 34px; padding: 0 10px; font-size: 12px; gap: 4px; }
  .lang-btn svg { width: 13px; height: 13px; }
  .menu { display: inline-flex; width: 36px; height: 36px; }

  .links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    margin: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(6, 17, 13, .98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 24px 48px rgba(0, 0, 0, .85);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 100;
  }
  .links.open { display: flex; }
  .links a { padding: 15px 20px; border-top: 1px solid var(--line); font-size: 15px; color: var(--text-2); }
  .links a:hover, .links a:active { color: var(--mint); background: rgba(0, 255, 147, .04); }
  .drawer-actions { display: flex; flex-direction: column; gap: 10px; padding: 20px 16px 24px; border-top: 1px solid var(--line-strong); background: var(--panel); }
  .drawer-actions .btn { width: 100%; justify-content: center; height: 46px; font-size: 14px; }

  .hero-row, html[lang="en"] .hero-row { grid-template-columns: minmax(0, 1fr); gap: 48px; padding-top: 56px; padding-bottom: 72px; }
  .hero-copy { min-width: 0; width: 100%; }
  .mock { max-width: 720px; width: 100%; overflow: hidden; }
  .mock-body, html[lang="en"] .mock-body { grid-template-columns: minmax(0, 1fr); }
  .notes { border-left: 0; border-top: 1px solid var(--line); padding: 12px; }

  .pillar-row, .caps, .pains, .road, .partners { grid-template-columns: repeat(2, 1fr); }
  .partner:nth-child(2) { border-right: 1px solid var(--line); }
  .partner:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .partner:nth-child(2n+1) { border-left: 0; }
  .pain:nth-child(2) { border-right: 1px solid var(--line); }
  .pain:nth-child(-n+2) { border-bottom: 1px solid var(--line); padding-bottom: 24px; }
  .pillar:nth-child(2) { border-right: 1px solid var(--line); }
  .pillar:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .sec-row { grid-template-columns: 1fr; gap: 36px; }
  .sec-copy { position: static; }
}

/* 手机尺寸 (<= 640px) */
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .top-row { height: 60px; gap: 10px; }
  .links { top: 60px; max-height: calc(100vh - 60px); }

  .eyebrow { font-size: 10.5px; letter-spacing: .08em; margin-bottom: 16px; flex-wrap: wrap; line-height: 1.4; }
  .hero-row, html[lang="en"] .hero-row { padding-top: 36px; padding-bottom: 56px; gap: 36px; }
  h1 { font-size: clamp(26px, 7.5vw, 36px); line-height: 1.15; letter-spacing: -.02em; }
  html[lang="en"] h1 { font-size: clamp(24px, 6.8vw, 32px); line-height: 1.18; }
  .lead, html[lang="en"] .lead { font-size: 15px; line-height: 1.68; margin-top: 16px; max-width: 100%; }
  .hero-cta { margin-top: 28px; gap: 10px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .trust { margin-top: 24px; gap: 8px 16px; font-size: 12px; }

  .mock-bar { height: 36px; padding: 0 10px; font-size: 11px; }
  .mock-bar b { font-size: 11px; }
  .mock-pipeline { padding: 6px 10px; gap: 6px; -webkit-overflow-scrolling: touch; }
  .pipe-step { font-size: 10px; padding: 2.5px 6px; }
  html[lang="en"] .pipe-step { font-size: 9px; padding: 2px 5px; }
  .paper { margin: 10px; padding: 16px 14px; font-size: 12.5px; line-height: 1.75; }
  .cohort-tag { flex-wrap: wrap; gap: 4px; font-size: 10.5px; }
  .p-h { font-size: 13px; margin-bottom: 10px; }
  .refs { margin-top: 12px; padding-top: 10px; font-size: 10px; word-break: break-word; }
  .notes { padding: 10px; gap: 8px; }
  .note { padding: 8px 10px; font-size: 11px; }

  .section { padding: 64px 0; }
  h2 { font-size: clamp(22px, 5.8vw, 30px); line-height: 1.22; letter-spacing: -.01em; max-width: 100%; }
  html[lang="en"] h2 { font-size: clamp(20px, 5.2vw, 26px); line-height: 1.25; max-width: 100%; }

  .pillar-row, .caps, .pains, .steps, .partners, .road { grid-template-columns: minmax(0, 1fr); margin-top: 36px; }
  .pillar { border-left: 0; border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .pillar:first-child { border-top: 1px solid var(--line); }
  .pillar:last-child { border-bottom: 0; }
  .pillar h3 { font-size: 17px; margin: 12px 0 8px; }
  .pillar p { font-size: 13.5px; }

  .pain, .pain + .pain { padding: 24px 0; border-left: 0; }
  .pain + .pain { border-top: 1px solid var(--line); }
  .pain h3 { font-size: 18px; margin: 12px 0 10px; }
  .pain p { font-size: 14px; }
  .pain .answer { padding-top: 18px; font-size: 13.5px; }
  .pain .answer::before { margin-bottom: 12px; }

  .caps { border-left: 0; border-right: 0; }
  .cap { padding: 22px 16px 26px; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
  .cap h3 { font-size: 17px; margin: 24px 0 10px; }
  .cap p { font-size: 13.5px; }

  .road { gap: 12px; }
  .road-item { padding: 22px 18px 26px; }
  .road-item h3 { font-size: 18px; margin: 20px 0 10px; }
  .road-item p { font-size: 13.5px; }

  .steps { gap: 16px; }
  .steps li { padding: 22px 18px; }
  .steps li:not(:last-child)::after { display: none; }
  .steps h3 { font-size: 18px; margin: 18px 0 10px; }
  .steps p { font-size: 13.5px; }

  .sec-row { gap: 32px; }
  .sec-list li { grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 20px 0; }
  .sec-list h3 { font-size: 15px; }
  .sec-list p { font-size: 13.5px; }
  .footnote { margin-top: 36px; font-size: 12px; }

  .partners { border-left: 0; border-right: 0; }
  .partner + .partner { border-left: 0; border-top: 1px solid var(--line); }
  .partner { min-height: 0; padding: 20px 16px; gap: 14px; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
  .partner p { font-size: 15px; }
  .brand-icon svg { max-width: 100%; height: auto; max-height: 26px; }

  .cta { padding: 64px 0; }
  .cta-row { gap: 28px; }
  .cta h2, html[lang="en"] .cta h2 { font-size: clamp(22px, 6vw, 32px); line-height: 1.25; }
  .cta-act, .cta-act .btn, .cta-btn-group, .cta-btn-group .btn { width: 100%; justify-content: center; }
  .cta-btn-group { flex-direction: column; gap: 10px; }
  .cta-act p { text-align: center; }

  .foot { padding: 44px 0 28px; }
  .foot-row { flex-direction: column; align-items: flex-start; gap: 24px; }
  .foot-links { gap: 14px 18px; font-size: 13px; }
  .foot-base { flex-direction: column; gap: 10px; margin-top: 32px; padding-top: 20px; font-size: 11.5px; }
}

/* 窄屏手机 (<= 520px) 隐藏顶栏 CTA 按钮，避免挤占空间 */
@media (max-width: 520px) {
  .top-cta .btn.mint {
    display: none !important;
  }
}

/* 对比表格 (Comparison Matrix) */
.comp-wrap {
  width: 100%;
  overflow-x: auto;
  margin-top: 36px;
  border: 1px solid var(--line);
  background: var(--panel);
  -webkit-overflow-scrolling: touch;
}
.comp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
  min-width: 760px;
}
.comp-table th, .comp-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.comp-table th {
  background: var(--raised);
  font-weight: 700;
  color: var(--text);
  font-size: 13.5px;
  letter-spacing: 0.02em;
}
.comp-table tr:last-child td {
  border-bottom: none;
}
.comp-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}
.comp-table th.col-heurion, .comp-table td.col-heurion {
  background: rgba(0, 255, 147, 0.04);
  border-left: 1px solid var(--green-line);
  border-right: 1px solid var(--green-line);
}
.comp-table th.col-heurion {
  background: rgba(0, 255, 147, 0.1);
  color: var(--mint);
}
.comp-table td.col-heurion {
  color: #fff;
  font-weight: 500;
}
.comp-table td.col-dim {
  color: var(--text-2);
  font-weight: 600;
}
.comp-table td.col-other {
  color: var(--muted);
}
.badge-check {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--green-soft);
  color: var(--mint);
  font-size: 11.5px;
  font-weight: 600;
  margin-bottom: 4px;
}
.badge-cross {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 500;
  margin-bottom: 4px;
}

/* FAQ 常见问题手风琴 */
.faq-list {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.15s, background 0.15s;
}
.faq-item:hover {
  border-color: var(--line-strong);
}
.faq-item[open] {
  border-color: var(--green-line);
  background: var(--raised);
}
.faq-item summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.15s, color 0.15s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item[open] summary::after {
  content: "−";
  color: var(--mint);
}
.faq-body {
  padding: 0 24px 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.faq-body p + p {
  margin-top: 12px;
}