/* ============================================================
   弗雷德云 FREDYUN · 家庭 / 企业宽带 —— 浅色主题设计系统
   ============================================================ */
:root {
  --bg: #f5f5fd;
  --bg-tint: #efeffb;
  --surface: #ffffff;
  --ink: #16123a;
  --ink-2: #3a3667;
  --muted: #6b6790;
  --faint: #9a97ba;
  --line: #e8e6f4;
  --line-2: #ddd9ee;

  --brand: #7c3aed;
  --brand-ink: #5b21b6;
  --cyan: #14b8d6;
  --coral: #fb7185;
  --grad: linear-gradient(120deg, #7c3aed 0%, #14a8d0 100%);
  --grad-soft: linear-gradient(120deg, #f1ecff 0%, #e6fbff 100%);
  --grad-coral: linear-gradient(120deg, #ff6a8b, #ff9a5c);

  --shadow-sm: 0 2px 8px rgba(40, 20, 90, 0.05);
  --shadow: 0 14px 40px -18px rgba(52, 24, 110, 0.24);
  --shadow-lg: 0 30px 70px -30px rgba(52, 24, 110, 0.34);
  --ring: 0 0 0 4px rgba(106, 60, 245, 0.14);

  --radius: 16px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5 { line-height: 1.18; font-weight: 800; letter-spacing: -0.01em; color: var(--ink); }
img { max-width: 100%; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.ico { width: 24px; height: 24px; display: block; }

/* soft page glow */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(680px 420px at 88% -6%, rgba(20, 184, 214, 0.12), transparent 60%),
    radial-gradient(720px 460px at -6% 4%, rgba(106, 60, 245, 0.10), transparent 62%);
}

/* ---------- container / section ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-sm { padding: 60px 0; }
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.02em; color: var(--brand);
  background: var(--grad-soft); border: 1px solid var(--line-2);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.eyebrow .ico { width: 16px; height: 16px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 17px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform 0.25s var(--ease), box-shadow 0.3s, background 0.25s, border-color 0.25s;
}
.btn .ico { width: 18px; height: 18px; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 26px -12px rgba(124, 58, 237, 0.5); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 36px -12px rgba(124, 58, 237, 0.6); }
.btn-primary:hover .ico.arw { transform: translateX(4px); }
.btn .ico.arw { transition: transform 0.3s var(--ease); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--brand); color: var(--brand); }
.btn.full { width: 100%; }
.btn.big { padding: 15px 30px; font-size: 16px; }

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 14px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.logo-mark { width: 30px; height: 30px; }
.brand-text { display: flex; align-items: baseline; gap: 7px; font-weight: 800; font-size: 18px; white-space: nowrap; }
.brand-text em { font-style: normal; font-size: 10.5px; letter-spacing: 0.24em; color: var(--faint); font-weight: 700; }

.nav { display: flex; gap: 1px; margin-left: auto; }
.nav > a {
  padding: 8px 10px; border-radius: 10px; font-size: 14px; font-weight: 500; color: var(--ink-2);
  white-space: nowrap; transition: color 0.2s, background 0.2s;
}
.nav > a:hover { color: var(--brand); background: var(--bg-tint); }
.nav > a.active { color: var(--brand); font-weight: 700; }
.header-cta { display: flex; align-items: center; gap: 10px; }
.header-cta .hotline { font-weight: 800; color: var(--brand); font-size: 14.5px; white-space: nowrap; }

.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; margin-left: auto; }
.burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: 0.3s; }

/* ---------- hero ---------- */
.hero { padding: 66px 0 30px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; font-weight: 600;
  color: var(--ink-2); background: var(--surface); border: 1px solid var(--line-2);
  padding: 7px 15px; border-radius: 999px; box-shadow: var(--shadow-sm); margin-bottom: 24px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 0 rgba(20, 184, 214, 0.5); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px rgba(20, 184, 214, 0); } 100% { box-shadow: 0 0 0 0 rgba(20, 184, 214, 0); } }
.hero h1 { font-size: clamp(38px, 5.6vw, 64px); font-weight: 900; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero-sub { color: var(--muted); font-size: 18px; max-width: 500px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 36px; }
.hero-stats .n { font-size: 34px; font-weight: 900; letter-spacing: -0.02em; }
.hero-stats .l { color: var(--faint); font-size: 13.5px; }

/* hero visual */
.hero-visual { position: relative; }
.hero-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 16px; position: relative; z-index: 2;
}
.hc-top { display: flex; align-items: center; justify-content: space-between; padding: 4px 6px 12px; }
.hc-live { display: flex; align-items: center; gap: 7px; font-size: 12.5px; font-weight: 700; color: var(--coral); }
.hc-live i { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); animation: blink 1.5s infinite; }
@keyframes blink { 50% { opacity: 0.3; } }
.hc-dots { display: flex; gap: 5px; }
.hc-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--line-2); }
.hc-screen {
  border-radius: 14px; aspect-ratio: 16 / 10; position: relative; overflow: hidden;
  background: linear-gradient(140deg, #1f6bff, #12c2e6); display: grid; place-items: center;
}
.hc-play { width: 60px; height: 60px; border-radius: 50%; background: rgba(255, 255, 255, 0.95); display: grid; place-items: center; color: var(--brand); box-shadow: 0 12px 30px rgba(9, 40, 90, 0.35); z-index: 2; transition: transform 0.3s var(--ease); }
.hc-play:hover { transform: scale(1.08); }
.hc-play .ico { width: 30px; height: 30px; }
.hc-eq { position: absolute; bottom: 0; left: 0; right: 0; height: 60px; display: flex; align-items: flex-end; justify-content: center; gap: 5px; padding: 0 18px 14px; }
.hc-eq span { flex: 1; max-width: 11px; background: rgba(255, 255, 255, 0.85); border-radius: 4px; animation: eq 1.1s ease-in-out infinite; }
.hc-eq span:nth-child(2) { animation-delay: .15s } .hc-eq span:nth-child(3) { animation-delay: .3s }
.hc-eq span:nth-child(4) { animation-delay: .45s } .hc-eq span:nth-child(5) { animation-delay: .6s }
.hc-eq span:nth-child(6) { animation-delay: .3s } .hc-eq span:nth-child(7) { animation-delay: .1s }
@keyframes eq { 0%, 100% { height: 24%; } 50% { height: 88%; } }
.hc-chips { display: flex; gap: 8px; flex-wrap: wrap; padding: 14px 6px 6px; }
.hc-chips span { font-size: 12px; color: var(--ink-2); background: var(--bg-tint); border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }
.float {
  position: absolute; background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); padding: 10px 14px; display: flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 13.5px; z-index: 3;
}
.float .ico { width: 18px; height: 18px; color: var(--brand); }
.float-1 { top: 8%; left: -18px; animation: floaty 5s ease-in-out infinite; }
.float-2 { bottom: 12%; right: -14px; animation: floaty 6s ease-in-out infinite 0.6s; }
.float-2 .ico { color: var(--cyan); }
@keyframes floaty { 50% { transform: translateY(-12px); } }

/* ---------- feature tiles / cards grid ---------- */
.grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-5 { grid-template-columns: repeat(5, 1fr); }

.tile {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
  display: block;
}
.tile:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--line-2); }
.tile-ico {
  width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); margin-bottom: 18px; border: 1px solid var(--line-2);
}
.tile-ico .ico { width: 26px; height: 26px; }
.tile h3 { font-size: 18px; margin-bottom: 7px; }
.tile p { color: var(--muted); font-size: 14.5px; }
.tile .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; color: var(--brand); font-weight: 700; font-size: 14px; }
.tile .more .ico { width: 16px; height: 16px; transition: transform 0.3s var(--ease); }
.tile:hover .more .ico { transform: translateX(4px); }

/* ---------- package cards ---------- */
.pkg-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pkg {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px 26px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s; position: relative;
}
.pkg:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.pkg.hot { border-color: transparent; box-shadow: var(--shadow-lg); background:
  linear-gradient(var(--surface), var(--surface)) padding-box,
  var(--grad) border-box; border: 1.5px solid transparent; }
.pkg-tag { align-self: flex-start; font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; background: var(--bg-tint); color: var(--brand); border: 1px solid var(--line-2); margin-bottom: 16px; }
.pkg-tag.hot { background: var(--grad); color: #fff; border-color: transparent; }
.pkg h3 { font-size: 20px; margin-bottom: 12px; min-height: 52px; }
.pkg-price { display: flex; align-items: baseline; gap: 3px; margin-bottom: 4px; }
.pkg-price .num { font-size: 40px; font-weight: 900; letter-spacing: -0.02em; }
.pkg-price .unit { font-size: 15px; color: var(--muted); font-weight: 700; }
.pkg-alt { color: var(--faint); font-size: 13px; margin-bottom: 18px; }
.pkg-list { list-style: none; margin: 8px 0 22px; flex: 1; }
.pkg-list li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; color: var(--ink-2); }
.pkg-list li:last-child { border-bottom: 0; }
.pkg-list li .ico { width: 18px; height: 18px; color: var(--cyan); flex-shrink: 0; margin-top: 3px; }
.pkg .scope { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--faint); margin-bottom: 14px; }
.pkg .scope .ico { width: 15px; height: 15px; }

/* ---------- split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-text h2 { font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 14px; }
.split-text > p { color: var(--muted); font-size: 16.5px; margin-bottom: 26px; }
.mini-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mini {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 15px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.mini:hover { transform: translateY(-4px); border-color: var(--line-2); }
.mini .ico { width: 22px; height: 22px; color: var(--brand); flex-shrink: 0; }
.mini h4 { font-size: 15px; margin-bottom: 1px; }
.mini p { font-size: 13px; color: var(--muted); }

/* ---------- speed cards ---------- */
.speed-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.speed {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 30px; box-shadow: var(--shadow-sm); transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.speed:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.speed.hot { background: var(--grad); color: #fff; box-shadow: var(--shadow-lg); }
.speed.hot h3, .speed.hot .num { color: #fff; }
.speed.hot .badge { background: rgba(255,255,255,.2); color: #fff; }
.speed-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.speed-top h3 { font-size: 20px; }
.speed .badge { font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; background: var(--bg-tint); color: var(--brand); }
.speed .num-row { display: flex; align-items: baseline; gap: 6px; margin-bottom: 14px; }
.speed .num { font-size: 52px; font-weight: 900; letter-spacing: -0.03em; }
.speed .mbps { font-size: 17px; font-weight: 700; opacity: 0.75; }
.speed .price { font-size: 15px; font-weight: 700; margin-bottom: 18px; opacity: 0.9; }
.bar { height: 8px; border-radius: 999px; background: var(--bg-tint); overflow: hidden; margin-bottom: 20px; }
.speed.hot .bar { background: rgba(255,255,255,.25); }
.bar i { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--grad); transition: width 1.3s var(--ease); }
.speed.hot .bar i { background: #fff; }
.speed.in .bar i { width: var(--w); }
.speed ul { list-style: none; margin-bottom: 22px; }
.speed ul li { display: flex; gap: 9px; align-items: center; padding: 6px 0; font-size: 14.5px; }
.speed ul li .ico { width: 17px; height: 17px; flex-shrink: 0; }
.speed:not(.hot) ul li .ico { color: var(--cyan); }

/* ---------- channel grid (TV) ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 34px; }
.filters button {
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--surface);
  color: var(--ink-2); font-weight: 600; font-size: 14px; cursor: pointer; box-shadow: var(--shadow-sm);
  transition: all 0.25s var(--ease);
}
.filters button:hover { border-color: var(--brand); color: var(--brand); }
.filters button.on { background: var(--grad); color: #fff; border-color: transparent; }
.chan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.chan {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 18px;
  box-shadow: var(--shadow-sm); transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
  display: flex; flex-direction: column; gap: 10px;
}
.chan:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--line-2); }
.chan-badge { align-self: flex-start; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.chan-badge.pack { background: #eef4ff; color: var(--brand); }
.chan-badge.ch { background: #e8fbff; color: #0a97b5; }
.chan-name { font-size: 15px; font-weight: 700; line-height: 1.35; flex: 1; }
.chan-cost { font-size: 14px; font-weight: 800; }
.chan-cost .grad-text { font-size: 16px; }
.chan-region { font-size: 11px; color: var(--faint); }

/* ---------- timeline ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--brand), var(--cyan)); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before { content: ""; position: absolute; left: -30px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--surface); border: 3px solid var(--brand); box-shadow: var(--ring); }
.tl-year { font-size: 20px; font-weight: 900; }
.tl-year .grad-text { font-size: 20px; }
.tl-item p { color: var(--muted); font-size: 15px; margin-top: 2px; }

/* ---------- news ---------- */
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-item {
  display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 24px; box-shadow: var(--shadow-sm); transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.news-item:hover { transform: translateX(6px); box-shadow: var(--shadow); }
.news-date { text-align: center; min-width: 62px; }
.news-date b { display: block; font-size: 26px; font-weight: 900; line-height: 1; }
.news-date span { font-size: 12px; color: var(--faint); }
.news-body h3 { font-size: 16.5px; margin-bottom: 3px; }
.news-body p { font-size: 13.5px; color: var(--muted); }
.news-cat { font-size: 11.5px; font-weight: 700; color: var(--brand); background: var(--bg-tint); padding: 3px 10px; border-radius: 999px; display: inline-block; margin-bottom: 6px; }
.news-arrow { color: var(--brand); }
.news-arrow .ico { width: 20px; height: 20px; transition: transform 0.3s var(--ease); }
.news-item:hover .news-arrow .ico { transform: translateX(5px); }

/* ---------- CTA band ---------- */
.cta {
  background: var(--grad); border-radius: var(--radius-lg); padding: 56px 40px; text-align: center;
  color: #fff; box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.cta h2 { color: #fff; font-size: clamp(24px, 3.4vw, 36px); margin-bottom: 10px; }
.cta p { opacity: 0.92; font-size: 17px; margin-bottom: 26px; }
.cta .btn-ghost { background: #fff; color: var(--brand); border-color: #fff; }
.cta .btn-ghost:hover { color: var(--brand-ink); }

/* ---------- page hero (sub pages) ---------- */
.page-hero { padding: 54px 0 8px; }
.crumb { font-size: 13.5px; color: var(--faint); margin-bottom: 14px; }
.crumb a:hover { color: var(--brand); }
.page-hero h1 { font-size: clamp(30px, 4.4vw, 46px); margin-bottom: 12px; }
.page-hero p { color: var(--muted); font-size: 17px; max-width: 640px; }

/* ---------- detail page ---------- */
.detail-wrap { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.detail-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); }
.detail-price { display: flex; align-items: baseline; gap: 4px; margin: 8px 0 6px; }
.detail-price .num { font-size: 52px; font-weight: 900; }
.detail-list { list-style: none; margin: 20px 0; }
.detail-list li { display: flex; gap: 10px; align-items: flex-start; padding: 11px 0; border-bottom: 1px solid var(--line); }
.detail-list li .ico { width: 20px; height: 20px; color: var(--cyan); flex-shrink: 0; margin-top: 2px; }
.aside-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-sm); position: sticky; top: 90px; }
.pkg-shot { width: 100%; aspect-ratio: 16 / 10; border-radius: 14px; overflow: hidden; margin-bottom: 18px;
  background: linear-gradient(145deg, #f3f7ff, #eef9fc); border: 1px solid var(--line); display: grid; place-items: center; padding: 10px; }
.pkg-shot img { max-width: 100%; max-height: 100%; object-fit: contain; }
.aside-card h4 { font-size: 16px; margin-bottom: 14px; }
.note-list { list-style: none; }
.note-list li { font-size: 13.5px; color: var(--muted); padding: 7px 0 7px 22px; position: relative; }
.note-list li::before { content: ""; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }

/* ---------- info / contact ---------- */
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.info { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.info .tile-ico { margin-bottom: 14px; }
.info h4 { font-size: 15px; color: var(--faint); font-weight: 700; margin-bottom: 4px; }
.info p, .info a { font-size: 17px; font-weight: 700; color: var(--ink); }
.info a:hover { color: var(--brand); }

/* ---------- partners ---------- */
.partners { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.partners a {
  padding: 11px 20px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line);
  color: var(--ink-2); font-weight: 600; font-size: 14px; box-shadow: var(--shadow-sm);
  transition: all 0.25s var(--ease);
}
.partners a:hover { transform: translateY(-3px); color: var(--brand); border-color: var(--brand); }

/* ---------- footer ---------- */
.footer { background: var(--surface); border-top: 1px solid var(--line); margin-top: 40px; padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; }
.footer .brand { margin-bottom: 14px; }
.footer-brand p { color: var(--muted); font-size: 14px; }
.footer-col h5 { font-size: 14px; margin-bottom: 15px; }
.footer-col a, .footer-col p { display: block; color: var(--muted); font-size: 14px; margin-bottom: 9px; transition: color 0.2s; }
.footer-col a:hover { color: var(--brand); }
.footer-bottom {
  margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: var(--faint); font-size: 12.5px;
}
.footer-bottom a:hover { color: var(--brand); }

/* ---------- channel logos ---------- */
.chan-logo {
  width: 100%; aspect-ratio: 16 / 10; border-radius: 12px; overflow: hidden;
  background: linear-gradient(145deg, #f3f7ff, #eef9fc); border: 1px solid var(--line);
  display: grid; place-items: center; padding: 12px; margin-bottom: 4px;
}
.chan-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }
.chan-head { display: flex; align-items: center; justify-content: space-between; }

/* logo wall marquee */
.logo-wall { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.logo-track { display: flex; gap: 16px; width: max-content; animation: marq 40s linear infinite; }
.logo-wall:hover .logo-track { animation-play-state: paused; }
.logo-track .lw {
  width: 96px; height: 66px; flex-shrink: 0; border-radius: 14px; background: var(--surface);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm); display: grid; place-items: center; padding: 12px;
}
.logo-track .lw img { max-width: 100%; max-height: 100%; object-fit: contain; }
@keyframes marq { to { transform: translateX(-50%); } }

/* ---------- process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; box-shadow: var(--shadow-sm); text-align: center; }
.step-ico { width: 54px; height: 54px; border-radius: 50%; margin: 0 auto 14px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line-2); position: relative; }
.step-ico .ico { width: 26px; height: 26px; }
.step-num { counter-increment: step; position: absolute; top: -8px; right: -8px; width: 24px; height: 24px;
  border-radius: 50%; background: var(--grad); color: #fff; font-size: 12px; font-weight: 800; display: grid; place-items: center; }
.step-num::before { content: counter(step); }
.step h4 { font-size: 16px; margin-bottom: 5px; }
.step p { font-size: 13.5px; color: var(--muted); }
.step:not(:last-child)::after { content: ""; position: absolute; top: 52px; right: -12px; width: 24px; height: 2px;
  background: var(--line-2); z-index: 1; }

/* ---------- stat row (coverage) ---------- */
.statline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.statline .info { text-align: left; }

/* ---------- FAQ accordion ---------- */
.faq { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-sm); overflow: hidden; }
.faq summary { list-style: none; cursor: pointer; padding: 18px 22px; font-weight: 700; font-size: 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .pm { width: 22px; height: 22px; flex-shrink: 0; position: relative; transition: transform 0.3s var(--ease); }
.faq summary .pm::before, .faq summary .pm::after { content: ""; position: absolute; top: 50%; left: 50%; background: var(--brand); border-radius: 2px; transform: translate(-50%, -50%); }
.faq summary .pm::before { width: 12px; height: 2px; }
.faq summary .pm::after { width: 2px; height: 12px; transition: transform 0.3s var(--ease); }
.faq details[open] summary .pm::after { transform: translate(-50%, -50%) scaleY(0); }
.faq details[open] summary { color: var(--brand); }
.faq p { padding: 0 22px 20px; color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- news detail article ---------- */
.article-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.article { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.article-meta { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; color: var(--faint); font-size: 13.5px; margin: 6px 0 22px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta .ico { width: 15px; height: 15px; }
.article-body { color: var(--ink-2); font-size: 15.5px; line-height: 1.9; }
.article-body p { margin: 0 0 14px; }
.article-body img { border-radius: 12px; margin: 10px 0; height: auto; }
.article-body span { font-family: inherit !important; }
.article-body table { max-width: 100%; }
.news-side h4 { font-size: 15px; margin-bottom: 14px; }
.news-side .side-item { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
.news-side .side-item:last-child { border-bottom: 0; }
.news-side .side-item .sc { font-size: 11.5px; font-weight: 700; color: var(--brand); }
.news-side .side-item h5 { font-size: 14px; font-weight: 600; margin-top: 4px; color: var(--ink); }
.news-side .side-item:hover h5 { color: var(--brand); }

.news-date b.grad-text { -webkit-text-fill-color: transparent; }
.news-meta-row { display: flex; gap: 14px; align-items: center; margin-top: 6px; }
.news-meta-row span { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--faint); }
.news-meta-row .ico { width: 14px; height: 14px; }

/* ---------- reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 2px;
    background: var(--surface); border-bottom: 1px solid var(--line); padding: 14px 24px; box-shadow: var(--shadow); }
  .header.open .nav { display: flex; }
  .header.open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .header.open .burger span:nth-child(2) { opacity: 0; }
  .header.open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .burger { display: flex; }
  .header-cta { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .split { grid-template-columns: 1fr; }
  .g-4, .g-5, .pkg-grid { grid-template-columns: repeat(2, 1fr); }
  .chan-grid { grid-template-columns: repeat(3, 1fr); }
  .detail-wrap { grid-template-columns: 1fr; }
  .aside-card { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .g-2, .g-3, .g-4, .g-5, .pkg-grid, .speed-grid, .info-grid { grid-template-columns: 1fr; }
  .chan-grid { grid-template-columns: repeat(2, 1fr); }
  .mini-feats { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 22px; }
  .float { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .news-item { grid-template-columns: auto 1fr; }
  .news-arrow { display: none; }
}
@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:not(:last-child)::after { display: none; }
  .article-wrap { grid-template-columns: 1fr; }
  .statline { grid-template-columns: 1fr; }
  .article { padding: 28px; }
}
@media (max-width: 640px) {
  .steps { grid-template-columns: 1fr; }
  .chan-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .logo-track { animation: none; }
  .hn-flow, .acc-flow { display: none; }
}

/* ============================================================
   弗雷德云 · 新增组件（手绘 SVG / 拓扑图 / 价格 / 接入 / 合作 / 页脚二维码）
   ============================================================ */
.art { width: 26px; height: 26px; display: block; }
.chk { width: 18px; height: 18px; flex-shrink: 0; color: var(--cyan); }
.arw { width: 18px; height: 18px; }
.eyebrow .art.ey { width: 15px; height: 15px; }
.tile-ico .art { width: 27px; height: 27px; }
.tile-ico.big { width: 64px; height: 64px; border-radius: 18px; }
.tile-ico.big .art { width: 34px; height: 34px; }
.step-ico .art { width: 27px; height: 27px; }
.btn .arw { width: 17px; height: 17px; transition: transform .3s var(--ease); }
.btn-primary:hover .arw, .btn:hover .arw { transform: translateX(4px); }
.more .arw { width: 16px; height: 16px; transition: transform .3s var(--ease); }
a.hotline { transition: opacity .2s; } a.hotline:hover { opacity: .78; }

/* hero 细节 */
.hero h1 { line-height: 1.1; }
.hero-sub { max-width: 540px; line-height: 1.8; }
.hero-sub b { color: var(--ink-2); font-weight: 800; }

/* ---------- hero 拓扑图 ---------- */
.hero-net { position: relative; border-radius: var(--radius-lg); padding: 8px 8px 6px;
  background: linear-gradient(165deg, #1b1640 0%, #0c1030 100%);
  box-shadow: var(--shadow-lg); overflow: hidden; }
.hn-glow { position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px 260px at 50% 12%, rgba(124,58,237,.42), transparent 60%),
    radial-gradient(360px 240px at 74% 82%, rgba(34,211,238,.28), transparent 62%); }
.hn-svg { position: relative; width: 100%; height: auto; display: block; }
.hn-core rect { fill: rgba(124,58,237,.18); stroke: #a78bfa; stroke-width: 1.4; }
.hn-acc rect { fill: rgba(34,211,238,.12); stroke: #38e0f0; stroke-width: 1.4; }
.hn-end rect { fill: rgba(255,255,255,.05); stroke: rgba(255,255,255,.32); stroke-width: 1.3; }
.hn-t1 { fill: #fff; font-size: 14px; font-weight: 800; text-anchor: middle; }
.hn-t2 { fill: #b7b1e0; font-size: 10.5px; font-weight: 600; text-anchor: middle; }
.hn-lbl { fill: #fff; font-size: 13px; font-weight: 800; text-anchor: middle; }
.hn-el { fill: #f2f0fb; font-size: 13.5px; font-weight: 800; text-anchor: middle; }
.hn-el2 { fill: #a7a1d0; font-size: 11px; font-weight: 600; text-anchor: middle; }
.hn-dot circle { filter: drop-shadow(0 6px 14px rgba(124,58,237,.5)); }
.hn-flow { opacity: .95; }
.hn-flow path { stroke-dasharray: 5 12; animation: hndash 1.1s linear infinite; }
@keyframes hndash { to { stroke-dashoffset: -34; } }
.hn-chips { position: absolute; left: 16px; bottom: 12px; display: flex; gap: 7px; }
.hn-chips span { font-size: 11.5px; font-weight: 700; color: #dfe7ff;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16);
  padding: 4px 11px; border-radius: 999px; backdrop-filter: blur(4px); }

/* ---------- 业务总览卡 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.biz-card { display: flex; gap: 18px; align-items: flex-start; padding: 26px 24px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s, border-color .35s; }
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--line-2); }
.biz-ico { width: 58px; height: 58px; flex-shrink: 0; border-radius: 16px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line-2); }
.biz-ico .art { width: 32px; height: 32px; }
.biz-card h3 { font-size: 18px; margin-bottom: 6px; }
.biz-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 12px; }
.biz-card .more { display: inline-flex; align-items: center; gap: 6px; color: var(--brand); font-weight: 700; font-size: 14px; }
.biz-card:hover .more .arw { transform: translateX(4px); }

/* ---------- 双 AS 合作 ---------- */
.part-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; position: relative; }
.part-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 30px; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s; }
.part-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.part-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.part-ico { width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line-2); }
.part-ico .art { width: 28px; height: 28px; }
.part-role { font-size: 12px; font-weight: 800; letter-spacing: .06em; color: var(--faint); }
.part-card h3 { font-size: 22px; margin-bottom: 2px; }
.part-code { font-size: 30px; font-weight: 900; letter-spacing: -.01em; margin-bottom: 12px; }
.part-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 16px; }
.part-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.part-tags span { font-size: 12px; font-weight: 600; color: var(--ink-2); background: var(--bg-tint);
  border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }
.part-vs { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 3;
  width: 62px; height: 62px; border-radius: 50%; background: var(--grad); color: #fff;
  display: grid; place-items: center; text-align: center; font-size: 12px; font-weight: 800; line-height: 1.15;
  box-shadow: 0 12px 26px -8px rgba(124,58,237,.6); border: 3px solid var(--bg); }

/* ---------- 接入示意图 + 卡片 ---------- */
.acc-diagram { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 22px 20px 12px; box-shadow: var(--shadow-sm); margin-bottom: 26px; overflow-x: auto; }
.acc-diagram svg { width: 100%; min-width: 680px; height: auto; display: block; }
.ad-line { stroke: var(--line-2); stroke-width: 2; }
.ad-flow { stroke: url(#ag); stroke-width: 2; }
.ad-flow path { stroke-dasharray: 7 9; animation: accdash 1.1s linear infinite; }
.ad-hub rect { fill: url(#ag); stroke: none; }
.ad-h1 { fill: #fff; font-weight: 800; font-size: 15px; text-anchor: middle; }
.ad-h2 { fill: #eaf7ff; font-weight: 700; font-size: 13px; text-anchor: middle; }
.ad-node rect { fill: var(--surface); stroke: url(#ag); stroke-width: 2; }
.ad-abbr { fill: var(--brand); font-weight: 900; font-size: 16px; text-anchor: middle; }
.ad-name { fill: var(--muted); font-weight: 700; font-size: 12px; text-anchor: middle; }
@keyframes accdash { to { stroke-dashoffset: -32; } }
.acc-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.acc-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 22px; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s, border-color .35s; }
.acc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--line-2); }
.acc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.acc-ico { width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line-2); }
.acc-ico .art { width: 30px; height: 30px; }
.acc-abbr { font-size: 20px; font-weight: 900; letter-spacing: -.01em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.acc-tag { display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--brand);
  background: var(--bg-tint); border: 1px solid var(--line-2); padding: 4px 10px; border-radius: 999px; margin-bottom: 10px; }
.acc-card h3 { font-size: 17px; margin-bottom: 8px; }
.acc-card p { color: var(--muted); font-size: 13.8px; line-height: 1.7; margin-bottom: 14px; }
.acc-specs { display: flex; flex-wrap: wrap; gap: 6px; }
.acc-specs span { font-size: 11.5px; color: var(--ink-2); background: var(--surface);
  border: 1px solid var(--line); padding: 4px 9px; border-radius: 8px; }

/* ---------- 价格卡 ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.price-grid-4 { grid-template-columns: repeat(4, 1fr); }
.price-card { position: relative; display: flex; flex-direction: column; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px 24px;
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s, border-color .35s; }
.price-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.price-card.hot { box-shadow: var(--shadow-lg);
  background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--grad) border-box;
  border: 1.6px solid transparent; }
.pc-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.pc-tag { font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px;
  background: var(--bg-tint); color: var(--brand); border: 1px solid var(--line-2); }
.pc-tag.hot { background: var(--grad); color: #fff; border-color: transparent; }
.pc-speed { display: flex; align-items: baseline; gap: 3px; color: var(--faint); }
.pc-speed b { font-size: 26px; font-weight: 900; color: var(--ink); letter-spacing: -.02em; }
.pc-speed span { font-size: 12px; font-weight: 700; }
.price-card h3 { font-size: 20px; margin-bottom: 6px; }
.pc-sell { color: var(--muted); font-size: 13.5px; margin-bottom: 14px; min-height: 38px; }
.pc-price { display: flex; align-items: baseline; gap: 3px; }
.pc-price .cur { font-size: 20px; font-weight: 800; color: var(--brand); }
.pc-price .num { font-size: 42px; font-weight: 900; letter-spacing: -.03em; }
.pc-price .unit { font-size: 15px; color: var(--muted); font-weight: 700; }
.pc-install { font-size: 12.5px; color: var(--faint); margin: 2px 0 14px; }
.ip-badge { display: inline-flex; align-items: center; gap: 6px; align-self: flex-start;
  font-size: 12px; font-weight: 700; color: #0a7d63; background: #e6fbf3; border: 1px solid #b8ecdb;
  padding: 5px 11px; border-radius: 999px; margin-bottom: 14px; }
.ip-badge .art { width: 16px; height: 16px; }
.pc-list { list-style: none; margin: 4px 0 20px; flex: 1; }
.pc-list li { display: flex; gap: 9px; align-items: flex-start; padding: 8px 0;
  border-bottom: 1px dashed var(--line); font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.pc-list li:last-child { border-bottom: 0; }
.pc-list li .chk { margin-top: 2px; }
.center-btn { text-align: center; margin-top: 34px; }

/* ---------- 电视融合 addon ---------- */
.addon-wrap { }
.addon { display: grid; grid-template-columns: 1.5fr 1fr; gap: 34px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 38px 40px; box-shadow: var(--shadow); }
.addon-left h2 { font-size: clamp(24px, 3.2vw, 32px); margin: 6px 0 10px; }
.addon-sub { color: var(--brand); font-weight: 700; font-size: 14.5px; margin-bottom: 8px; }
.addon-desc { color: var(--muted); font-size: 15.5px; line-height: 1.85; margin-bottom: 16px; }
.addon-price { text-align: center; background: var(--grad-soft); border: 1px solid var(--line-2);
  border-radius: var(--radius); padding: 28px 26px; }
.addon-price .tile-ico.big { margin: 0 auto 14px; }
.ap-num { display: flex; align-items: baseline; justify-content: center; gap: 2px; margin-bottom: 8px; }
.ap-num .plus { font-size: 26px; font-weight: 800; color: var(--brand); }
.ap-num .num { font-size: 52px; font-weight: 900; letter-spacing: -.03em; }
.ap-num .unit { font-size: 16px; font-weight: 700; color: var(--muted); }
.addon-price p { color: var(--muted); font-size: 13.5px; margin-bottom: 16px; }

/* ---------- 企业分组 + SLA ---------- */
.ent-groups { display: flex; flex-direction: column; gap: 40px; }
.ent-group .section-head { margin-bottom: 26px; }
.guard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.guard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; box-shadow: var(--shadow-sm); text-align: center; }
.guard .big { font-size: 34px; font-weight: 900; letter-spacing: -.02em; margin-bottom: 6px; }
.guard p { color: var(--muted); font-size: 13.5px; }

/* note wide */
.note-wide { max-width: 860px; margin: 26px auto 0; }

/* about */
.about-intro { color: var(--muted); font-size: 16px; line-height: 1.95; margin-bottom: 22px; }
.about-stats { margin-bottom: 22px; }

/* ---------- CTA 按钮变体 ---------- */
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-light { background: #fff; color: var(--brand); border-color: #fff; }
.btn-light:hover { transform: translateY(-3px); color: var(--brand-ink); box-shadow: var(--shadow); }
.btn-ghost-inv { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost-inv:hover { transform: translateY(-3px); background: rgba(255,255,255,.2); }

/* ---------- 页脚 二维码 ---------- */
.footer-brand .foot-site { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px;
  color: var(--brand); font-weight: 700; font-size: 13.5px; }
.footer-brand .foot-site .arw { width: 15px; height: 15px; }
.footer-qr { display: flex; justify-content: flex-end; }
.qr-card { display: flex; gap: 14px; align-items: center; background: var(--bg-tint);
  border: 1px solid var(--line-2); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow-sm); }
.qr-card img { width: 108px; height: 108px; border-radius: 10px; background: #fff; padding: 5px; border: 1px solid var(--line); }
.qr-meta { display: flex; flex-direction: column; gap: 3px; }
.qr-meta b { font-size: 15px; color: var(--ink); }
.qr-meta span { font-size: 13px; color: var(--ink-2); font-weight: 600; }
.qr-meta small { font-size: 12px; color: var(--faint); margin-top: 3px; }

/* ---------- 新增响应式 ---------- */
@media (max-width: 960px) {
  .biz-grid { grid-template-columns: 1fr; }
  .acc-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid, .price-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .addon { grid-template-columns: 1fr; }
  .guard-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-qr { justify-content: flex-start; }
}
@media (max-width: 640px) {
  .part-grid { grid-template-columns: 1fr; }
  .part-vs { position: static; transform: none; margin: 4px auto; }
  .acc-grid, .price-grid, .price-grid-4, .guard-grid { grid-template-columns: 1fr; }
  .pc-sell { min-height: 0; }
  .qr-card { flex-direction: column; text-align: center; }
}

/* ============================================================
   弗雷德云 · 第二轮修订（排版 / 模态框 / 上下行 / 企业价 / 上游 / 移动端）
   ============================================================ */

/* 排版：中文标题避免单字换行 / 孤字 */
h1, h2, h3, h4, h5 { text-wrap: balance; }
.section-head p, .hero-sub, .tile p, .acc-card p, .biz-card p, .pc-sell,
.addon-desc, .about-intro, .peer-lead, .part-card p, .modal-sub, .step p { text-wrap: pretty; }
.pc-tag, .acc-tag, .ip-badge, .sla-badge, .pc-speed, .hn-chips span,
.part-role, .acc-specs span, .peer-chips span { white-space: nowrap; }

/* hero 统计：不收缩、标签不换行、整体可整块换行 */
.hero-stats { display: flex; flex-wrap: wrap; gap: 20px 24px; }
.hero-stats > div { flex: 0 0 auto; }
.hero-stats .n { font-size: 29px; white-space: nowrap; }
.hero-stats .l { white-space: nowrap; }

/* 价格卡：上下行比例 + 徽章行 */
.pc-ratio { display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--brand);
  background: var(--grad-soft); border: 1px solid var(--line-2); padding: 5px 11px;
  border-radius: 8px; margin-bottom: 12px; }
.pc-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.pc-badges:empty { display: none; }
.ip-badge { margin-bottom: 0; }
.sla-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700;
  color: #5b21b6; background: #f1ecff; border: 1px solid #ddd0f7; padding: 5px 11px; border-radius: 999px; }
.sla-badge .art { width: 16px; height: 16px; }

/* 关于 · 品牌说明 */
.brand-note { display: flex; gap: 14px; align-items: flex-start; background: var(--grad-soft);
  border: 1px solid var(--line-2); border-radius: 14px; padding: 16px 18px; margin-bottom: 22px; }
.bn-ico { width: 42px; height: 42px; border-radius: 12px; background: var(--surface);
  border: 1px solid var(--line-2); display: grid; place-items: center; color: var(--brand); flex-shrink: 0; }
.bn-ico .art { width: 24px; height: 24px; }
.brand-note p { font-size: 14px; color: var(--ink-2); line-height: 1.75; }
.brand-note b { color: var(--brand); }

/* 关于 · 联系方式四列（修复 3+1 缺格） */
.info-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 上游与互联 */
.peer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 22px; }
.peer-col { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 22px; box-shadow: var(--shadow-sm); }
.peer-head { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; }
.peer-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line-2); flex-shrink: 0; }
.peer-ico .art { width: 26px; height: 26px; }
.peer-head h4 { font-size: 16px; margin-bottom: 2px; }
.peer-head p { font-size: 12.5px; color: var(--muted); }
.peer-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.peer-chips span { font-size: 13px; font-weight: 600; color: var(--ink-2); background: var(--bg-tint);
  border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; }
.peer-lead { max-width: 840px; margin: 0 auto; text-align: center; color: var(--muted);
  font-size: 15px; line-height: 1.85; }

/* ---------- 预约安装 模态框 ---------- */
.modal { position: fixed; inset: 0; z-index: 300; display: none; align-items: center;
  justify-content: center; padding: 20px; }
.modal.open { display: flex; }
.modal-mask { position: absolute; inset: 0; background: rgba(22, 18, 58, .55);
  backdrop-filter: blur(4px); animation: mfade .25s ease; }
.modal-card { position: relative; z-index: 2; width: 100%; max-width: 404px; background: var(--surface);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 30px 28px; animation: mpop .32s var(--ease); }
@keyframes mfade { from { opacity: 0; } }
@keyframes mpop { from { opacity: 0; transform: translateY(16px) scale(.98); } }
.modal-x { position: absolute; top: 12px; right: 16px; background: none; border: 0; font-size: 26px;
  line-height: 1; color: var(--faint); cursor: pointer; transition: color .2s; }
.modal-x:hover { color: var(--ink); }
.modal-card h3 { font-size: 21px; margin-bottom: 6px; }
.modal-sub { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.modal-opts { display: flex; flex-direction: column; gap: 12px; }
.modal-opt { display: flex; align-items: center; gap: 14px; width: 100%; text-align: left;
  padding: 15px 16px; border-radius: 14px; border: 1px solid var(--line-2); background: var(--surface);
  cursor: pointer; transition: transform .25s var(--ease), border-color .25s, box-shadow .25s; }
.modal-opt:hover { border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.mo-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; flex-shrink: 0; }
.mo-ico.wx { background: #e7f9ee; color: #09b83e; }
.mo-ico.ph { background: var(--grad-soft); color: var(--brand); }
.mo-ico .art { width: 26px; height: 26px; }
.mo-txt { flex: 1; display: flex; flex-direction: column; gap: 1px; }
.mo-txt b { font-size: 16px; }
.mo-txt small { font-size: 13px; color: var(--muted); }
.mo-arw { color: var(--faint); display: flex; }
.mo-arw .arw { width: 18px; height: 18px; }
.modal-opt:hover .mo-arw { color: var(--brand); }
.modal-qr { margin-top: 18px; text-align: center; border-top: 1px solid var(--line); padding-top: 18px; }
.modal-qr img { width: 180px; height: auto; border-radius: 12px; border: 1px solid var(--line);
  padding: 6px; background: #fff; }
.modal-qr p { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

/* ---------- 第二轮响应式 ---------- */
@media (max-width: 960px) {
  .peer-grid { grid-template-columns: 1fr; }
  .info-grid-4 { grid-template-columns: repeat(2, 1fr); }
  /* 移动端保留报装按钮，仅隐藏热线文字 */
  .header-cta { display: flex; }
  .header-cta .hotline { display: none; }
  .header-cta .btn { padding: 9px 16px; font-size: 14px; }
  .hero-net { max-width: 460px; margin: 0 auto; }
}
@media (max-width: 640px) {
  .info-grid-4 { grid-template-columns: 1fr; }
  .hero-stats { gap: 18px 26px; }
  .hero-stats .n { font-size: 27px; }
  .hero h1 { font-size: clamp(30px, 8.4vw, 40px); }
  .page-hero h1 { font-size: clamp(26px, 8vw, 36px); }
  .modal-card { padding: 26px 20px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-qr { justify-content: center; }
  .qr-card { max-width: 320px; }
}

/* ============================================================
   弗雷德云 · 第三轮修订（联系强调 / 二维码放大 / 联系区 / 配色）
   ============================================================ */

/* 联系电话与邮箱：更大、品牌专属配色 */
.header-cta .hotline { font-size: 15.5px; }
.footer-col.contact-col a { font-size: 15px; margin-bottom: 11px; }
.footer-col.contact-col .contact-tel { font-size: 18px; font-weight: 800; color: var(--brand);
  letter-spacing: .01em; }
.footer-col.contact-col .contact-tel:hover { color: var(--cyan); }
.footer-col.contact-col .contact-mail { font-weight: 700; color: var(--ink-2); }
.footer-col.contact-col .contact-mail:hover { color: var(--brand); }

/* 页脚二维码卡片（现为按钮，可点击放大） */
.footer-qr .qr-card { font: inherit; text-align: left; cursor: pointer; width: auto;
  background: var(--bg-tint); border: 1px solid var(--line-2); }
.footer-qr .qr-card:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-2px);
  transition: all .25s var(--ease); }
.qr-meta small { color: var(--brand); font-weight: 700; }

/* 模态框：电话号码更大更醒目、二维码更大 */
.mo-num { font-size: 13px; color: var(--muted); }
.mo-num.tel { font-size: 19px; font-weight: 800; color: var(--brand); letter-spacing: .01em; }
.modal-opt.ph:hover, .modal-opt:hover .mo-num.tel { color: var(--brand-ink); }
.modal-qr { margin-top: 18px; text-align: center; border-top: 1px solid var(--line); padding-top: 18px; }
.qr-thumb { border: 0; background: none; padding: 0; cursor: pointer; display: inline-block; line-height: 0; }
.qr-thumb img { width: 216px; height: auto; border-radius: 14px; border: 1px solid var(--line);
  padding: 8px; background: #fff; transition: transform .2s var(--ease); }
.qr-thumb:hover img { transform: scale(1.03); box-shadow: var(--shadow); }
.modal-qr p { font-size: 13px; color: var(--muted); margin-top: 12px; line-height: 1.6; }
.qr-hint { color: var(--brand); font-weight: 700; }

/* 二维码 放大灯箱 */
.qr-light { position: fixed; inset: 0; z-index: 400; display: none; align-items: center;
  justify-content: center; padding: 24px; }
.qr-light.open { display: flex; }
.qr-light-mask { position: absolute; inset: 0; background: rgba(16, 12, 40, .78);
  backdrop-filter: blur(6px); animation: mfade .25s ease; }
.qr-light-card { position: relative; z-index: 2; background: #fff; border-radius: var(--radius-lg);
  padding: 26px; box-shadow: var(--shadow-lg); text-align: center; animation: mpop .3s var(--ease);
  max-width: min(92vw, 420px); }
.qr-light-x { position: absolute; top: 10px; right: 14px; background: none; border: 0; font-size: 30px;
  line-height: 1; color: var(--faint); cursor: pointer; }
.qr-light-x:hover { color: var(--ink); }
.qr-light-card img { width: min(78vw, 340px); height: auto; border-radius: 14px; border: 1px solid var(--line);
  padding: 10px; background: #fff; }
.qr-light-card p { margin-top: 14px; font-size: 16px; font-weight: 800; color: var(--ink); }
.qr-light-card p span { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin-top: 4px; }

/* 关于 · 联系我们（大号电话 + 可点二维码） */
.contact2 { display: grid; grid-template-columns: 1.5fr 1fr; gap: 24px; align-items: stretch; }
.contact2-main { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 32px; box-shadow: var(--shadow-sm); }
.cc-phones { padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.cc-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 700;
  color: var(--muted); margin-bottom: 12px; }
.cc-label .art { width: 18px; height: 18px; color: var(--brand); }
.cc-tel { display: block; font-size: 28px; font-weight: 900; letter-spacing: .01em; line-height: 1.35;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; width: max-content; }
.cc-tel:hover { opacity: .82; }
.cc-rows { display: flex; flex-direction: column; gap: 4px; }
.cc-row { display: flex; align-items: center; gap: 14px; padding: 11px 0; }
.cc-row + .cc-row { border-top: 1px dashed var(--line); }
.cc-k { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted);
  font-weight: 600; min-width: 128px; white-space: nowrap; }
.cc-k .art { width: 18px; height: 18px; color: var(--brand); }
.cc-row b { font-size: 16px; font-weight: 700; color: var(--ink); white-space: nowrap; }
.cc-row .cc-mail, .cc-row .cc-link { color: var(--brand); }
a.cc-row:hover .cc-mail, a.cc-row:hover .cc-link { color: var(--brand-ink); }
.contact2-qr { display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; background: var(--grad-soft); border: 1px solid var(--line-2); border-radius: var(--radius-lg);
  padding: 26px 22px; cursor: pointer; text-align: center; transition: all .25s var(--ease); }
.contact2-qr:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-3px); }
.contact2-qr img { width: 150px; height: auto; border-radius: 12px; border: 1px solid var(--line);
  padding: 6px; background: #fff; margin-bottom: 10px; }
.contact2-qr b { font-size: 15px; color: var(--ink); }
.contact2-qr span { font-size: 12.5px; color: var(--brand); font-weight: 700; }

@media (max-width: 760px) {
  .contact2 { grid-template-columns: 1fr; }
  .cc-tel { font-size: 24px; }
  .contact2-main { padding: 24px 20px; }
}

@media (max-width: 640px) {
  .cc-row { flex-direction: column; align-items: flex-start; gap: 3px; padding: 12px 0; }
  .cc-k { min-width: 0; }
  .cc-row b { white-space: normal; word-break: break-word; font-size: 15px; }
  .cc-tel { font-size: 23px; max-width: 100%; }
  .contact2-main { padding: 22px 18px; }
}

/* ============================================================
   弗雷德云 · 第四轮（突出 PON/PTN/OTN · 拓扑三段 · 边缘/毛边修复）
   ============================================================ */

/* 首屏拓扑：突出 PON/PTN/OTN，弱化 HFC/微波 */
.hn-feat { filter: drop-shadow(0 0 10px rgba(56,224,240,.6)) drop-shadow(0 6px 14px rgba(124,58,237,.55)); }
.hn-sub { opacity: .78; filter: drop-shadow(0 5px 12px rgba(124,58,237,.35)); }
.hn-lbl.sub { font-size: 11.5px; }

/* 接入示意图：主力节点（PON/PTN/OTN）实心渐变 + 白字，其余描边 */
.ad-node.feat rect { fill: url(#ag); stroke: none; }
.ad-node.feat .ad-abbr { fill: #fff; }
.ad-node.feat .ad-name { fill: #eaf7ff; }
.ad-feat { fill: #7c3aed; font-size: 10px; font-weight: 800; text-anchor: middle;
  letter-spacing: .04em; }
.ad-node.feat .ad-feat { fill: #a78bfa; }

/* 接入卡片：主力（PON/PTN/OTN）渐变描边高亮 */
.acc-card.feat { border-color: transparent;
  background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--grad) border-box;
  border: 1.5px solid transparent; box-shadow: var(--shadow); }
.acc-star { display: inline-block; margin-left: 8px; font-size: 10.5px; font-weight: 800;
  color: #fff; background: var(--grad); padding: 2px 8px; border-radius: 999px;
  vertical-align: middle; letter-spacing: .03em; }

/* 热销卡「毛边」修复：改用干净的实色 ring + 阴影，避免渐变描边锯齿 */
.price-card.hot {
  background: var(--surface);
  border: 2px solid #a888f4;
  box-shadow: 0 0 0 4px rgba(124,58,237,.10), var(--shadow-lg);
}
.acc-card.feat {
  background: var(--surface);
  border: 2px solid #a888f4;
  box-shadow: 0 0 0 4px rgba(124,58,237,.08), var(--shadow);
}

/* 移动端页头：收紧品牌、CTA 靠右，避免按钮与汉堡重叠 */
@media (max-width: 640px) {
  .brand-text em { display: none; }
  .brand-text { font-size: 17px; }
  .header-cta { margin-left: auto; }
  .header-inner { gap: 10px; }
  .header-cta .btn { padding: 9px 15px; }
}
@media (max-width: 360px) {
  .header-cta .btn { padding: 8px 12px; font-size: 13.5px; }
}

/* 关于页公司名：缩小以单行显示，避免难看换行 */
.split-text h2.about-name { font-size: clamp(21px, 2.5vw, 28px); line-height: 1.35; }

/* ============================================================
   弗雷德云 · 第五轮（换行不断词 + 移动端接入图上下结构）
   ============================================================ */

/* 正文中文按词/标点断行，避免「区域」「WiFi 6」等被拆开；
   overflow-wrap 兜底，保证过长内容仍能换行、不溢出 */
.section-head p, .hero-sub, .page-hero p, .biz-card p, .tile p, .acc-card p,
.pc-sell, .addon-desc, .about-intro, .peer-lead, .part-card p, .modal-sub,
.faq p, .step p, .guard p, .pc-list li, .note-list li, .cc-row b, .biz-card,
.mini p, .info p { word-break: keep-all; overflow-wrap: anywhere; }

/* 移动端接入拓扑：纵向上下结构（默认隐藏，仅窄屏显示） */
.acc-vert { display: none; }
@media (max-width: 640px) {
  .acc-diagram { display: none; }
  .acc-vert { display: flex; flex-direction: column; align-items: center; gap: 0;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 26px 18px; box-shadow: var(--shadow-sm); margin-bottom: 26px; }
  .av-node { width: 100%; max-width: 300px; text-align: center; border-radius: 14px; padding: 13px 16px; }
  .av-node b { display: block; font-size: 15.5px; font-weight: 800; }
  .av-node span { font-size: 12px; font-weight: 600; }
  .av-node.core { background: var(--grad); color: #fff; box-shadow: 0 10px 22px -12px rgba(124,58,237,.6); }
  .av-node.core span { color: #eef; opacity: .9; }
  .av-node.acc { background: var(--grad-soft); border: 1.5px solid var(--line-2); color: var(--ink); }
  .av-node.acc span { color: var(--brand); }
  .av-node.end { background: var(--surface); border: 1.5px solid #a888f4; color: var(--ink); }
  .av-link { width: 2px; height: 22px; background: linear-gradient(var(--brand), var(--cyan)); }
  .av-methods { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; max-width: 320px; }
  .av-m { font-size: 14px; font-weight: 800; padding: 9px 15px; border-radius: 12px;
    border: 1.5px solid var(--line-2); color: var(--brand); background: var(--surface); }
  .av-m.feat { background: var(--grad); color: #fff; border-color: transparent;
    box-shadow: 0 6px 14px -6px rgba(124,58,237,.5); }
}

/* 修复：SVG 固有宽度撑大 grid 列导致移动端横向溢出 */
.hero-text, .hero-net { min-width: 0; }
.hn-svg { max-width: 100%; }
@media (max-width: 960px) {
  .hero-net { max-width: 460px; width: 100%; margin: 0 auto; }
}

/* 页脚版本号（= 最后一次构建时间） */
.footer-ver { margin-top: 12px; text-align: center; font-size: 12px; color: var(--faint);
  letter-spacing: .02em; }

/* 渐变实心胶囊：加极细同色描边，避免右侧浅色端与浅背景「融边」看似缝隙 */
.btn-primary { box-shadow: 0 12px 26px -12px rgba(124,58,237,.5), 0 0 0 1px rgba(90,33,182,.14); }
.btn-primary:hover { box-shadow: 0 18px 36px -12px rgba(124,58,237,.6), 0 0 0 1px rgba(90,33,182,.14); }
.pc-tag.hot, .av-m.feat, .part-vs { box-shadow: 0 0 0 1px rgba(90,33,182,.14); }
.av-m.feat { box-shadow: 0 6px 14px -6px rgba(124,58,237,.5), 0 0 0 1px rgba(90,33,182,.16); }