@charset "utf-8";
/* ==========================================================================
   bikamanga.cc  ·  哔咔漫画内容专题站
   视觉方向 B9「霓虹都市」：深蓝底 + 霓虹紫 / 电光蓝点缀
   ★ 变量取值 = 哔咔漫画品牌第 9 档配色（前八档见技能 07 册档位登记）
     已换掉的维度：主色相（霓虹紫 270°）/ 辅色相（电光青 188°）/ Hero 明暗（整站深底）
     / Logo 母题（霓虹灯管城市天际线）；CTA 首次带「霓虹外发光」
   与 App 自身配色的分离关系：App 内部恒为粉顶栏 #DB547D + 白底 + 粉 tab，
   本站 chrome 走深蓝霓虹，截图与自绘 mockup 内部一律跟随 App 的粉白配色。
   ========================================================================== */

@font-face {
  font-family: "Chakra Petch";
  src: url("../fonts/chakra-petch.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #070b1e;
  --bg2: #0b1233;
  --card: #101838;
  --card2: #16204a;
  --line: #253166;
  --neon: #a855f7;
  --neon-d: #7c3aed;
  --neon-s: rgba(168, 85, 247, 0.15);
  --cyan: #22d3ee;
  --cyan-d: #0e7490;
  --cyan-s: rgba(34, 211, 238, 0.13);
  --pink: #ff4fa3;
  --pink-s: rgba(255, 79, 163, 0.14);
  --tx: #eaf0ff;
  --tx2: #aebadf;
  --tx3: #7c89b6;
  --cta: linear-gradient(135deg, #22d3ee 0%, #6366f1 48%, #a855f7 100%);
  --glow: 0 10px 32px rgba(124, 58, 237, 0.4), 0 0 46px rgba(34, 211, 238, 0.16);
  --r: 16px;
  --font: "Chakra Petch", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font: 400 16px/1.85 var(--font);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--neon); }

h1, h2, h3, h4 { margin: 0; line-height: 1.32; letter-spacing: .2px; }
h1 { font-size: 46px; font-weight: 700; }
h2 { font-size: 30px; font-weight: 700; }
h3 { font-size: 20px; font-weight: 700; }
p { margin: 0 0 14px; }

.wrap { width: min(1180px, 92vw); margin: 0 auto; }

/* 屏读可见、视觉隐藏（不能用 left:-9999px，会触发闸门 oob） */
.skip {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

/* ───────── 顶部导航 ───────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 30, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 18px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--tx); font-weight: 700; }
.brand:hover { color: var(--tx); }
.brand img { width: 40px; height: 40px; border-radius: 11px; }
.brand span { font-size: 20px; letter-spacing: .5px; }
.nav-links { display: flex; gap: 6px; margin-left: auto; align-items: center; }
.nav-links a {
  color: var(--tx2); padding: 8px 14px; border-radius: 10px; font-size: 15px;
}
.nav-links a:hover { color: var(--tx); background: var(--neon-s); }
.nav-links a[aria-current="page"] {
  color: var(--tx); background: var(--neon-s);
  box-shadow: inset 0 -2px 0 var(--neon);
}
.nav-cta {
  color: #fff !important; background: var(--cta); padding: 9px 18px; border-radius: 11px;
  font-size: 15px; font-weight: 700; box-shadow: var(--glow);
}
.nav-toggle {
  display: none; margin-left: auto; background: transparent; color: var(--tx);
  border: 1px solid var(--line); border-radius: 10px; padding: 7px 12px; font: inherit;
}

/* ───────── Hero ───────── */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(155deg, #070b1e 0%, #0c1330 46%, #111a3f 100%);
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 16% 22%, rgba(168, 85, 247, .34), transparent 42%),
    radial-gradient(circle at 82% 12%, rgba(34, 211, 238, .26), transparent 40%),
    radial-gradient(circle at 70% 88%, rgba(255, 79, 163, .2), transparent 46%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgba(124, 137, 182, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 137, 182, .12) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, #000 8%, transparent 82%);
  -webkit-mask-image: linear-gradient(180deg, #000 8%, transparent 82%);
}
.hero-in {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 40px; align-items: center;
  padding: 62px 0 66px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  border: 1px solid rgba(34, 211, 238, .42); background: var(--cyan-s);
  color: #9febf8; border-radius: 999px; padding: 6px 15px; font-size: 14px; margin-bottom: 20px;
}
.eyebrow i { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); }
.hero h1 { text-shadow: 0 0 30px rgba(168, 85, 247, .5); }
.hero h1 em { font-style: normal; color: var(--cyan); }
.lead { color: var(--tx2); font-size: 17px; margin: 20px 0 0; max-width: 34em; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 15px 32px; border-radius: 13px; font-weight: 700; font-size: 17px;
  background: var(--cta); color: #fff !important; box-shadow: var(--glow);
}
.btn:hover { filter: brightness(1.08); }
.btn-ghost {
  background: transparent; color: var(--tx) !important;
  border: 1px solid var(--line); box-shadow: none;
}
.btn-ghost:hover { border-color: var(--neon); background: var(--neon-s); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 26px; color: var(--tx3); font-size: 14px; }
.hero-meta b { color: var(--cyan); font-family: "Chakra Petch", var(--font); font-size: 17px; }

.hero-phones { position: relative; display: flex; justify-content: center; align-items: flex-end; }
.phone {
  width: 268px; border-radius: 26px; overflow: hidden; background: #05081a;
  box-shadow: 0 0 0 1px rgba(168, 85, 247, .5), 0 26px 60px rgba(0, 0, 0, .6),
    0 0 60px rgba(34, 211, 238, .18);
}
.phone img { width: 100%; height: auto; }
.phone.small {
  position: absolute; right: -6%; bottom: -26px; width: 172px; border-radius: 20px;
  box-shadow: 0 0 0 1px rgba(34, 211, 238, .5), 0 18px 40px rgba(0, 0, 0, .62);
}
.phone-glow {
  position: absolute; bottom: -40px; left: 50%; transform: translateX(-50%);
  width: 76%; height: 90px; border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(168, 85, 247, .5), transparent 70%);
  filter: blur(14px);
}

/* ───────── 通用区块 ───────── */
.sec { padding: 68px 0; }
.sec-alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 780px; margin-bottom: 34px; }
.sec-head h2 { margin-bottom: 6px; }
.sec-head p { color: var(--tx2); margin: 0; }
.kicker {
  display: inline-block; font-family: "Chakra Petch", var(--font);
  color: var(--cyan); font-size: 13px; letter-spacing: 2.4px; margin-bottom: 12px;
}
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px 24px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--tx2); font-size: 15.5px; margin: 0 0 10px; }
.card p:last-child { margin-bottom: 0; }
.card-accent { border-color: rgba(168, 85, 247, .45); background: linear-gradient(180deg, var(--card2), var(--card)); }
.card h3 i {
  display: inline-block; width: 9px; height: 9px; border-radius: 3px;
  background: var(--cyan); margin-right: 10px; vertical-align: 2px;
}
.card-accent h3 i { background: var(--pink); }

/* 场景入口 */
.scene { display: flex; flex-direction: column; gap: 10px; }
.scene .tag {
  font-family: "Chakra Petch", var(--font); font-size: 12.5px; letter-spacing: 1.6px;
  color: var(--neon);
}
.scene ul { margin: 0; padding-left: 18px; color: var(--tx2); font-size: 15.5px; }
.scene ul li { margin-bottom: 5px; }

/* 图文两列 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.split.rev .split-media { order: 2; }
.split-media { display: flex; gap: 18px; justify-content: center; }
.split-media .phone { width: 232px; }
.split-body h2 { margin-bottom: 10px; }
.split-body p { color: var(--tx2); }
.checklist { list-style: none; margin: 16px 0 0; padding: 0; }
.checklist li { position: relative; padding-left: 26px; color: var(--tx2); margin-bottom: 9px; font-size: 15.5px; }
.checklist li::before {
  content: ""; position: absolute; left: 4px; top: 12px; width: 9px; height: 9px;
  border-radius: 3px; background: var(--cyan);
}
.checklist li b { color: var(--tx); }

/* 预览图栅格：6 张 → 3 列 × 2 行 */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.shot {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 16px; text-align: center;
}
.shot img { width: 100%; height: auto; border-radius: 14px; }
.shot figcaption { color: var(--tx3); font-size: 13.5px; margin-top: 12px; }

/* 评价 */
.quote { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--neon); border-radius: var(--r); padding: 22px 22px 18px; }
.quote p { color: var(--tx2); font-size: 15.5px; }
.quote .who { color: var(--tx); font-weight: 700; font-size: 15px; }
.stars { color: #ffd166; letter-spacing: 3px; font-size: 15px; }

/* FAQ */
.faq { border: 1px solid var(--line); border-radius: var(--r); background: var(--card); overflow: hidden; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 22px; font-weight: 700; font-size: 16.5px;
  position: relative; padding-right: 52px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 22px; top: 15px; color: var(--cyan);
  font-size: 22px; font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq details[open] summary { color: var(--cyan); }
.faq .ans { padding: 0 22px 20px; color: var(--tx2); font-size: 15.5px; }

/* 下载条 */
.cta-band {
  background: linear-gradient(140deg, #131c44, #0b1233 55%, #1a1040);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cta-in { display: flex; align-items: center; gap: 30px; padding: 46px 0; flex-wrap: wrap; }
.cta-in h2 { margin-bottom: 8px; }
.cta-in p { color: var(--tx2); margin: 0; }
.cta-in .btn { margin-left: auto; }

/* 数据 / 步骤 */
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; }
.steps li { position: relative; padding: 0 0 20px 62px; color: var(--tx2); }
.steps li::before {
  counter-increment: s; content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 2px;
  font-family: "Chakra Petch", var(--font); font-size: 15px; color: var(--cyan);
  width: 42px; height: 42px; border-radius: 12px; border: 1px solid rgba(34, 211, 238, .4);
  background: var(--cyan-s); display: flex; align-items: center; justify-content: center;
}
.steps li b { color: var(--tx); display: block; margin-bottom: 3px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.tbl th, .tbl td { text-align: left; padding: 13px 14px; border-bottom: 1px solid var(--line); }
.tbl th { color: var(--cyan); font-weight: 700; font-size: 14.5px; }
.tbl td { color: var(--tx2); }
.tbl td:first-child { color: var(--tx); }

/* 页脚 */
.foot { background: #05081a; border-top: 1px solid var(--line); padding: 40px 0 34px; }
.foot-in { display: flex; gap: 26px; flex-wrap: wrap; align-items: flex-start; }
.foot-brand { display: flex; align-items: center; gap: 10px; color: var(--tx); font-weight: 700; }
.foot-brand img { width: 34px; height: 34px; border-radius: 9px; }
.foot nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.foot nav a { color: var(--tx3); font-size: 14.5px; }
.foot nav a:hover { color: var(--cyan); }
.disclaimer {
  margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line);
  color: var(--tx3); font-size: 13.5px;
}
.copy { color: #56618b; font-size: 13px; margin-top: 8px; }

/* 渐显（三层兜底见 main.js；此处只负责过渡与初始态） */
.reveal { transition: opacity .5s ease, transform .5s ease; }
.js .reveal { opacity: 0; transform: translateY(16px); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .js .reveal, .js .reveal.is-in { opacity: 1; transform: none; transition: none; }
}

/* ───────── 断点 ───────── */
@media (max-width: 980px) {
  h1 { font-size: 36px; }
  h2 { font-size: 25px; }
  .hero-in { grid-template-columns: 1fr; padding: 46px 0 54px; gap: 34px; }
  .hero-phones { justify-content: flex-start; padding-left: 8px; }
  .phone { width: 232px; }
  .phone.small { right: 12%; width: 150px; }
  .split { grid-template-columns: 1fr; gap: 26px; }
  .split.rev .split-media { order: 0; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 68px;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #0a1029; border-bottom: 1px solid var(--line); padding: 12px 4vw 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links .nav-cta { text-align: center; margin-top: 6px; }
  .cta-in .btn { margin-left: 0; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; }
  h1 { font-size: 29px; }
  h2 { font-size: 22px; }
  .sec { padding: 48px 0; }
  .g2, .g3, .g4, .shots { grid-template-columns: 1fr; }
  .hero-btns .btn { width: 100%; justify-content: center; padding: 14px 20px; }
  .phone.small { position: static; margin-left: -14px; }
  .hero-phones { align-items: flex-end; }
  .split-media .phone { width: 78%; }
  .card { padding: 20px 18px; }
  .foot nav { margin-left: 0; }
}