/* ===========================================================
   HSH 网络科技 · 官网样式系统
   独立站点，不复用、不修改任何现有站点资源
   =========================================================== */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #07080A;
  --bg-soft: #0B0D10;
  --surface: #0F1116;
  --surface-2: #14171D;
  --line: rgba(255, 255, 255, 0.075);
  --line-strong: rgba(255, 255, 255, 0.14);

  --text: #F2F4F7;
  --text-2: #A6AEBB;
  --text-3: #6E7683;

  --cyan: #4ADEC0;
  --indigo: #6C8CFF;
  --amber: #FFB267;

  --grad: linear-gradient(120deg, var(--cyan) 0%, var(--indigo) 100%);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;

  --maxw: 1240px;
  --nav-h: 72px;

  --ff: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ff-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(74, 222, 192, 0.28); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #0A0B0E; }
::-webkit-scrollbar-thumb { background: #23272F; border-radius: 6px; border: 2px solid #0A0B0E; }
::-webkit-scrollbar-thumb:hover { background: #333944; }

/* ---------- 布局 ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section { padding: 108px 0; position: relative; }
.section--tight { padding: 76px 0; }

/* ---------- 背景装饰 ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
}

.bg-glow { position: absolute; border-radius: 50%; filter: blur(110px); pointer-events: none; z-index: 0; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 100;
  display: flex; align-items: center;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(7, 8, 10, 0.82);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--line);
}

.nav__inner {
  width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; gap: 20px;
}

.logo { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -0.01em; font-size: 17px; flex-shrink: 0; }

.logo__mark {
  width: 30px; height: 30px; border-radius: 9px; background: var(--grad);
  display: grid; place-items: center; font-size: 13px; font-weight: 800;
  color: #06231C; letter-spacing: -0.02em;
  box-shadow: 0 6px 20px -6px rgba(74, 222, 192, 0.6);
}

.logo__text small {
  display: block; font-size: 10px; font-weight: 500; color: var(--text-3);
  letter-spacing: 0.14em; margin-top: -3px; text-transform: uppercase;
}

.nav__links { display: flex; align-items: center; gap: 4px; margin-left: auto; }

.nav__links a {
  padding: 8px 14px; font-size: 14.5px; color: var(--text-2);
  border-radius: 9px; transition: color .18s, background .18s; white-space: nowrap;
}

.nav__links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.045); }
.nav__links a.is-active { color: var(--text); }

.nav__cta {
  margin-left: 10px; padding: 9px 19px !important;
  background: var(--grad) !important; color: #061E19 !important;
  font-weight: 650; border-radius: 10px;
  box-shadow: 0 8px 24px -10px rgba(74, 222, 192, 0.7);
}

.nav__cta:hover { filter: brightness(1.07); }

.nav__burger {
  display: none; margin-left: auto; width: 40px; height: 40px;
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.03);
  border-radius: 10px; color: var(--text);
  align-items: center; justify-content: center;
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: calc(var(--nav-h) + 96px) 0 96px; overflow: hidden; }
.hero__glow-1 { width: 620px; height: 620px; background: rgba(74, 222, 192, 0.16); top: -220px; left: -160px; }
.hero__glow-2 { width: 560px; height: 560px; background: rgba(108, 140, 255, 0.15); top: -140px; right: -180px; }
.hero .wrap { position: relative; z-index: 2; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 14px 6px 10px; border: 1px solid var(--line-strong);
  border-radius: 100px; font-size: 13px; color: var(--text-2);
  background: rgba(255, 255, 255, 0.028); backdrop-filter: blur(6px);
  margin-bottom: 26px;
}

.eyebrow__dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(74, 222, 192, 0.18);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 3px rgba(74, 222, 192, .18); }
  50% { opacity: .65; box-shadow: 0 0 0 6px rgba(74, 222, 192, .06); }
}

.hero h1 {
  font-size: clamp(38px, 6.2vw, 72px); line-height: 1.08;
  letter-spacing: -0.035em; font-weight: 780; margin: 0 0 24px; max-width: 15em;
}

.hero h1 .grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__sub {
  font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2);
  max-width: 41em; margin: 0 0 38px; line-height: 1.75;
}

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 68px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 28px; border-radius: 12px; font-size: 15.5px; font-weight: 620;
  border: 1px solid transparent; white-space: nowrap;
  transition: transform .16s, box-shadow .2s, background .18s, border-color .18s;
}

.btn--primary { background: var(--grad); color: #05211B; box-shadow: 0 14px 40px -16px rgba(74, 222, 192, 0.85); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 48px -16px rgba(74, 222, 192, 0.95); }
.btn--ghost { background: rgba(255, 255, 255, 0.035); border-color: var(--line-strong); color: var(--text); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(255, 255, 255, 0.24); transform: translateY(-2px); }
.btn__arrow { transition: transform .2s; }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* Hero 数据条 */
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r-lg); overflow: hidden;
}

.stat { background: var(--bg-soft); padding: 26px 24px; }

.stat__num {
  font-size: 30px; font-weight: 740; letter-spacing: -0.03em; line-height: 1.1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat__num .unit { font-size: 17px; font-weight: 600; }
.stat__label { font-size: 13.5px; color: var(--text-3); margin-top: 7px; }

/* ---------- 章节标题 ---------- */
.sec-head { max-width: 720px; margin-bottom: 56px; }

.sec-tag {
  display: inline-block; font-size: 12.5px; font-weight: 650;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 16px;
}

.sec-head h2 {
  font-size: clamp(28px, 3.6vw, 44px); line-height: 1.18;
  letter-spacing: -0.028em; font-weight: 730; margin: 0 0 18px;
}

.sec-head p { font-size: 17px; color: var(--text-2); margin: 0; line-height: 1.72; }

.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- 能力卡片 ---------- */
.cap-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}

.cap {
  position: relative; padding: 30px 28px; border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.038), rgba(255,255,255,0.012));
  border: 1px solid var(--line); overflow: hidden;
  transition: transform .25s, border-color .25s, background .25s;
}

.cap::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(74,222,192,0.10), transparent 70%);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}

.cap:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.cap:hover::before { opacity: 1; }

.cap__icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center; margin-bottom: 22px;
  background: rgba(74, 222, 192, 0.10);
  border: 1px solid rgba(74, 222, 192, 0.22);
  color: var(--cyan);
}

.cap__icon svg { width: 22px; height: 22px; }

.cap h3 { font-size: 19px; font-weight: 680; margin: 0 0 11px; letter-spacing: -0.01em; }
.cap p { font-size: 14.8px; color: var(--text-2); margin: 0 0 18px; line-height: 1.68; }

.cap__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }

.cap__list li {
  font-size: 13.8px; color: var(--text-3);
  display: flex; align-items: flex-start; gap: 9px;
}

.cap__list li::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--cyan); margin-top: 8px; flex-shrink: 0; opacity: .75;
}

/* ---------- Agent 矩阵 ---------- */
.agent-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.agent {
  position: relative; padding: 26px; border-radius: var(--r-lg);
  background: var(--surface); border: 1px solid var(--line);
  transition: transform .25s, border-color .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}

.agent:hover {
  transform: translateY(-4px);
  border-color: rgba(74, 222, 192, 0.3);
  box-shadow: 0 20px 50px -24px rgba(74, 222, 192, 0.35);
}

.agent__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 16px; }

.agent__badge {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 20px;
  background: rgba(255, 255, 255, 0.045); border: 1px solid var(--line);
}

.agent__status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 100px;
  background: rgba(74, 222, 192, 0.10); color: var(--cyan);
  border: 1px solid rgba(74, 222, 192, 0.2); white-space: nowrap;
}

.agent__status i { width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); }

.agent__status--beta { background: rgba(255, 178, 103, 0.10); color: var(--amber); border-color: rgba(255, 178, 103, 0.22); }
.agent__status--beta i { background: var(--amber); }

.agent h3 { font-size: 18px; font-weight: 680; margin: 0 0 8px; letter-spacing: -0.01em; }
.agent__desc { font-size: 14.2px; color: var(--text-2); margin: 0 0 18px; line-height: 1.66; flex: 1; }

.agent__tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }

.agent__tags span {
  font-size: 11.8px; padding: 3px 9px; border-radius: 6px;
  background: rgba(255, 255, 255, 0.04); color: var(--text-3);
  border: 1px solid var(--line);
}

.agent__link {
  font-size: 13.8px; color: var(--cyan); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  padding-top: 16px; border-top: 1px solid var(--line);
}

.agent__link:hover { gap: 10px; }
.agent__link svg { transition: transform .2s; }
.agent__link:hover svg { transform: translateX(3px); }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 20px; }

.flow__step { position: relative; padding: 0 22px; }

.flow__step:not(:last-child)::after {
  content: ""; position: absolute; top: 19px; right: -1px; width: 24px; height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

.flow__num {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  font-size: 14px; font-weight: 700; font-family: var(--ff-mono);
  background: rgba(74, 222, 192, 0.09); border: 1px solid rgba(74, 222, 192, 0.22);
  color: var(--cyan); margin-bottom: 18px;
}

.flow__step h4 { font-size: 16px; font-weight: 660; margin: 0 0 8px; }
.flow__step p { font-size: 13.8px; color: var(--text-3); margin: 0; line-height: 1.62; }

/* ---------- 场景 / 行业 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }

.scene {
  display: flex; gap: 20px; padding: 28px; border-radius: var(--r-lg);
  background: var(--surface); border: 1px solid var(--line);
  transition: border-color .25s, background .25s;
}

.scene:hover { border-color: var(--line-strong); background: var(--surface-2); }

.scene__icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 21px;
  background: rgba(108, 140, 255, 0.10); border: 1px solid rgba(108, 140, 255, 0.2);
}

.scene h4 { font-size: 16.5px; font-weight: 660; margin: 0 0 8px; }
.scene p { font-size: 14px; color: var(--text-2); margin: 0; line-height: 1.66; }

/* ---------- 演示预告 ---------- */
.demo-band {
  position: relative; border-radius: 26px; overflow: hidden;
  border: 1px solid rgba(74, 222, 192, 0.22);
  background: linear-gradient(135deg, rgba(74, 222, 192, 0.08), rgba(108, 140, 255, 0.07));
  padding: 52px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
}

.demo-band__txt h3 { font-size: clamp(24px, 2.8vw, 34px); font-weight: 720; margin: 0 0 12px; letter-spacing: -0.02em; }
.demo-band__txt p { font-size: 15.5px; color: var(--text-2); margin: 0; max-width: 34em; line-height: 1.7; }

/* ---------- 表单 ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }

.contact__info h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 730; margin: 0 0 18px; letter-spacing: -0.028em; line-height: 1.2; }
.contact__info > p { font-size: 16px; color: var(--text-2); margin: 0 0 34px; line-height: 1.72; }

.contact__item { display: flex; gap: 15px; margin-bottom: 24px; align-items: flex-start; }

.contact__ico {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 17px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line);
}

.contact__item b { display: block; font-size: 13px; color: var(--text-3); font-weight: 500; margin-bottom: 3px; }
.contact__item span { font-size: 15.5px; font-weight: 600; letter-spacing: -0.01em; }

.form-card {
  padding: 34px; border-radius: var(--r-lg);
  background: var(--surface); border: 1px solid var(--line);
}

.form-card h3 { font-size: 19px; font-weight: 680; margin: 0 0 6px; }
.form-card > p { font-size: 13.8px; color: var(--text-3); margin: 0 0 26px; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 7px; font-weight: 500; }

.field input,
.field textarea,
.field select {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line);
  color: var(--text); font-size: 14.5px; font-family: inherit;
  transition: border-color .18s, background .18s; outline: none;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: rgba(74, 222, 192, 0.5); background: rgba(255, 255, 255, 0.05);
}

.field input::placeholder, .field textarea::placeholder { color: #4E5560; }
.field textarea { resize: vertical; min-height: 92px; }
.field select option { background: #14171D; }

.form-card .btn { width: 100%; margin-top: 8px; }
.form-note { font-size: 12.2px; color: var(--text-3); margin: 14px 0 0; text-align: center; }

.form-msg { font-size: 13.5px; margin-top: 14px; text-align: center; min-height: 20px; }
.form-msg.ok { color: var(--cyan); }
.form-msg.err { color: #FF7A7A; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: var(--bg-soft); }

.footer__top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; margin-bottom: 42px; }
.footer__brand { max-width: 320px; }
.footer__brand p { font-size: 13.8px; color: var(--text-3); margin: 16px 0 0; line-height: 1.7; }
.footer__company {
  font-size: 13px; color: var(--text-2); margin-top: 14px !important;
  padding-top: 13px; border-top: 1px solid var(--line); letter-spacing: 0.01em;
}

.footer__cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer__col h5 { font-size: 12.5px; color: var(--text-3); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 16px; }
.footer__col a { display: block; font-size: 14px; color: var(--text-2); margin-bottom: 11px; transition: color .18s; }
.footer__col a:hover { color: var(--cyan); }

.footer__bottom {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  padding-top: 26px; border-top: 1px solid var(--line);
  font-size: 12.8px; color: var(--text-3);
}

/* ---------- 滚动渐入 ---------- */
/* 仅在 JS 正常运行（html 上有 js-reveal 类）时才隐藏待渐入元素，
   确保脚本被拦截/加载失败时内容依然完整显示，不会白屏 */
.js-reveal .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1); }
.js-reveal .reveal.is-in { opacity: 1; transform: none; }

/* ---------- 业务全景（四大板块） ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }

.biz {
  position: relative; padding: 32px 30px; border-radius: var(--r-lg);
  background: var(--surface); border: 1px solid var(--line);
  transition: transform .25s, border-color .25s, background .25s;
  overflow: hidden;
}

.biz::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
  opacity: 0; transition: opacity .3s;
}

.biz:hover { transform: translateY(-3px); border-color: var(--line-strong); background: var(--surface-2); }
.biz:hover::after { opacity: 1; }

.biz--core {
  border-color: rgba(74, 222, 192, 0.26);
  background: linear-gradient(150deg, rgba(74, 222, 192, 0.07), rgba(108, 140, 255, 0.05));
}

.biz--core:hover { border-color: rgba(74, 222, 192, 0.42); }

.biz__head { display: flex; align-items: center; gap: 13px; margin-bottom: 16px; }

.biz__ico {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 20px;
  background: rgba(255, 255, 255, 0.045); border: 1px solid var(--line);
}

.biz--core .biz__ico {
  background: rgba(74, 222, 192, 0.12);
  border-color: rgba(74, 222, 192, 0.26);
}

.biz__title { min-width: 0; }
.biz__title h3 { font-size: 18.5px; font-weight: 690; margin: 0 0 3px; letter-spacing: -0.015em; }
.biz__title small { font-size: 12px; color: var(--text-3); letter-spacing: 0.06em; }

.biz__tag {
  margin-left: auto; flex-shrink: 0;
  font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 100px;
  background: rgba(74, 222, 192, 0.12); color: var(--cyan);
  border: 1px solid rgba(74, 222, 192, 0.26);
}

.biz__desc { font-size: 14.3px; color: var(--text-2); margin: 0; line-height: 1.68; }

.biz__items {
  list-style: none; padding: 0; margin: 20px 0 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px;
}

.biz__items li {
  font-size: 13.6px; color: var(--text-2); line-height: 1.5;
  padding: 9px 0 9px 15px; border-top: 1px solid var(--line);
  position: relative;
}

.biz__items li::before {
  content: ""; position: absolute; left: 0; top: 16px;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--cyan); opacity: .55;
}

.biz--core .biz__items li::before { opacity: .9; }

/* 单项服务占满一行时 */
.biz__items li.is-wide { grid-column: 1 / -1; }

/* ---------- 数字条（业务版） ---------- */
.biz-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r-lg); overflow: hidden; margin-top: 20px;
}

.biz-stats .stat { background: var(--bg-soft); }

/* ---------- 响应式：中等屏 ---------- */
@media (max-width: 1080px) {
  .cap-grid, .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .flow__step:not(:last-child)::after { display: none; }
  .contact { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 860px) {
  .biz { padding: 26px 22px; }
  .biz__items { grid-template-columns: 1fr; gap: 0; }
  .biz-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__links.is-open {
    display: flex; position: absolute; top: var(--nav-h); left: 16px; right: 16px;
    flex-direction: column; align-items: stretch; gap: 2px; padding: 14px;
    background: rgba(12, 14, 18, 0.97); border: 1px solid var(--line);
    border-radius: 16px; backdrop-filter: blur(20px);
  }
  .nav__links.is-open a { padding: 12px 14px; }
  .nav__links.is-open .nav__cta { margin: 8px 0 0; text-align: center; }

  .section { padding: 76px 0; }
  .hero { padding: calc(var(--nav-h) + 56px) 0 64px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .cap-grid, .agent-grid, .scene-grid { grid-template-columns: 1fr; }
  .demo-band { flex-direction: column; align-items: flex-start; padding: 36px 28px; }
  .footer__top { flex-direction: column; gap: 36px; }
  .footer__cols { gap: 40px; }
  .wrap { padding: 0 20px; }
  .nav__inner { padding: 0 20px; }
}

@media (max-width: 520px) {
  .flow { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .form-card { padding: 24px 20px; }
  .stat { padding: 20px 18px; }
  .stat__num { font-size: 25px; }
}