/* ============================================================
   HelloWord · hellowordwep.com.cn ——「声波 · 同声传译」主题
   深海军蓝沉浸式分屏 hero + 电光青声波招牌;正文浅底 + 品牌蓝点缀
   ============================================================ */

:root {
  --bg: #f4f8fd;
  --bg-2: #eaf1fb;
  --panel: #ffffff;
  --panel-2: #f7faff;
  --line: #e0eaf6;
  --line-2: #c4d6ea;
  --ink: #0d1b2e;
  --ink-2: #32465f;
  --muted: #64788f;
  --teal: #2563eb;          /* 品牌蓝(跟 favicon 一致) */
  --teal-bright: #3b82f6;
  --teal-deep: #1d4ed8;
  --cyan: #22d3ee;          /* 声波 signature */
  --sky: #38bdf8;
  --mint: #e7f2fe;
  --amber: #f59e0b;
  --navy: #050c1c;
  --navy-2: #0a1830;
  --navy-3: #10233f;
  --paper-2: #eaf1fb;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --r: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans); background: var(--bg); color: var(--ink);
  line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.25; }

.wrap { width: min(1080px, 92%); margin: 0 auto; }
.sec { padding: 72px 0; }
.sec-h { max-width: 660px; margin: 0 auto 42px; text-align: center; }
.sec-h.center { text-align: center; }
.sec-h .t {
  display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: 2px;
  color: var(--teal-bright); border: 1px solid var(--line-2); border-radius: 999px;
  padding: 5px 14px; margin-bottom: 16px;
}
.sec-h h2 { font-size: 32px; font-weight: 800; letter-spacing: -.5px; }
.sec-h p { color: var(--muted); margin-top: 12px; }
.center { text-align: center; padding: 90px 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; border-radius: 12px; border: 1px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
  color: #ffffff; box-shadow: 0 12px 30px -12px rgba(37, 99, 235, .45);
}
.btn-primary:hover { box-shadow: 0 16px 38px -12px rgba(37, 99, 235, .55); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-bright); }
.btn-outline { background: transparent; color: var(--teal-bright); border-color: var(--teal-deep); }
.btn-outline:hover { background: var(--mint); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 15px 30px; font-size: 16px; }

/* ---------- 顶部通栏 ---------- */
.topbar { background: var(--navy); color: #fff; }
.topbar-inner { display: flex; align-items: center; justify-content: center; gap: 20px; padding: 7px 0; font-size: 13px; }
.tb-msg { color: rgba(255, 255, 255, .92); }
.tb-link { color: #7dd3fc; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.tb-link:hover { color: #bae6fd; }

/* ---------- 顶栏 ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 248, 253, .85); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.top-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-ico { width: 34px; height: 34px; border-radius: 9px; }
.brand-name { font-weight: 800; font-size: 19px; letter-spacing: -.5px; }
.brand-tag { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 1.6px; color: var(--teal-bright); margin-top: -2px; }
.nav-wrap { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.nav-wrap > a { padding: 8px 13px; border-radius: 9px; font-size: 14.5px; font-weight: 600; color: var(--ink-2); }
.nav-wrap > a:hover, .nav-wrap > a.on { background: var(--mint); color: var(--teal-bright); }
.dd { position: relative; }
.dd > button { background: none; border: none; font: inherit; font-size: 14.5px; font-weight: 600; color: var(--ink-2); padding: 8px 13px; border-radius: 9px; cursor: pointer; }
.dd:hover > button, .dd > button.on { background: var(--mint); color: var(--teal-bright); }
.dd-menu { position: absolute; top: 100%; left: 0; min-width: 184px; background: var(--panel); border: 1px solid var(--line); border-radius: 13px; box-shadow: 0 26px 52px -30px rgba(13, 27, 46, .35); padding: 8px; opacity: 0; visibility: hidden; transform: translateY(6px); transition: .18s; display: flex; flex-direction: column; z-index: 55; }
.dd:hover .dd-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dd-menu a { padding: 9px 12px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--ink-2); }
.dd-menu a:hover { background: var(--mint); color: var(--teal-bright); }
.nav-toggle { display: none; background: none; border: none; color: var(--ink); font-size: 24px; cursor: pointer; }
.top-cta { margin-left: 6px; }

/* ---------- hero:深海军蓝分屏 + 声波招牌 ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 0 96px; color: #eaf2ff;
  background:
    radial-gradient(900px 480px at 82% -12%, rgba(56, 189, 248, .20), transparent 60%),
    radial-gradient(720px 440px at -8% 112%, rgba(34, 211, 238, .16), transparent 55%),
    linear-gradient(160deg, var(--navy-2) 0%, var(--navy) 48%, var(--navy-3) 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(125, 211, 252, .10) 1px, transparent 1px);
  background-size: 30px 30px;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-copy { max-width: 580px; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 2px; text-transform: uppercase;
  color: #7dd3fc; background: rgba(56, 189, 248, .12); border: 1px solid rgba(125, 211, 252, .30);
  padding: 6px 15px; border-radius: 999px;
}
.kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.hero-h1 { font-size: 60px; line-height: 1.08; font-weight: 800; letter-spacing: -2px; margin: 22px 0 16px; color: #fff; }
.hero-h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--cyan), var(--sky));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-lede { font-size: 17px; color: #b7c9e2; max-width: 620px; margin: 0 0 20px; line-height: 1.75; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 26px; }
.hero-tags span {
  font-size: 13px; font-weight: 600; color: #cfe3ff;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); border-radius: 999px; padding: 6px 14px;
}
.hero-cta { display: flex; gap: 12px; margin: 28px 0 10px; flex-wrap: wrap; }
.hero .btn-ghost { color: #eaf2ff; border-color: rgba(255, 255, 255, .30); }
.hero .btn-ghost:hover { border-color: #7dd3fc; color: #bae6fd; }
.hero-note { font-family: var(--mono); font-size: 12px; color: #8aa3c7; }

/* 声波语音翻译器卡 */
.hero-visual { min-width: 0; }
.vox {
  background: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .03));
  border: 1px solid rgba(125, 211, 252, .22); border-radius: 22px; overflow: hidden;
  box-shadow: 0 44px 90px -44px rgba(0, 0, 0, .65), inset 0 1px 0 rgba(255, 255, 255, .07);
  backdrop-filter: blur(8px);
}
.vox-head { display: flex; align-items: center; gap: 7px; padding: 16px 20px; border-bottom: 1px solid rgba(125, 211, 252, .14); }
.vox-head .vd { width: 10px; height: 10px; border-radius: 50%; background: rgba(125, 211, 252, .30); }
.vox-title { font-family: var(--mono); font-size: 12px; color: #a9c3e4; margin-left: 4px; }
.vox-live { margin-left: auto; display: flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 11px; color: #7dd3fc; }
.vox-live .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: .5; transform: scale(.8); } 50% { opacity: 1; transform: scale(1.2); } }

.vox-lang { display: flex; align-items: center; justify-content: center; gap: 18px; padding: 18px 20px 4px; }
.vox-lang .vl { font-weight: 800; font-size: 16px; color: #8aa3c7; }
.vox-lang .vl.on { color: #fff; }
.vox-swap {
  width: 38px; height: 38px; border-radius: 50%; background: rgba(56, 189, 248, .14);
  border: 1px solid rgba(125, 211, 252, .30); color: var(--cyan);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}

.vox-wave { padding: 6px 20px 2px; }
.wfm { width: 100%; height: auto; display: block; }
.wfm .wf-src, .wfm .wf-dst { animation: pulse 2s ease-in-out infinite; }
.wfm .wf-ring, .wfm .wf-ring2 { animation: ringfade 2.4s ease-in-out infinite; }
.wfm .wf-ring2 { animation-delay: .6s; }
@keyframes ringfade { 0%, 100% { opacity: .15; } 50% { opacity: .75; } }

.vox-line { display: grid; gap: 8px; padding: 14px 20px 16px; }
.vox-src { color: #eaf2ff; font-size: 15px; }
.vox-dst { color: var(--cyan); font-size: 14px; }
.vox-actions { display: flex; gap: 8px; padding: 0 20px 20px; }
.vox-actions span {
  font-size: 12px; color: #a9c3e4; background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12); border-radius: 9px; padding: 7px 14px;
}

/* ---------- 语言跑马灯 ---------- */
.marquee { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.marquee-track { display: flex; width: max-content; animation: mq-scroll 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.mq-item { padding: 18px 34px; font-family: var(--mono); font-size: 14px; color: var(--ink-2); white-space: nowrap; display: flex; align-items: center; gap: 10px; }
.mq-item .lg { color: var(--ink); font-weight: 700; font-family: var(--sans); }
.mq-item .sep { color: var(--cyan); }
@keyframes mq-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- bento 功能网格 ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.bento-cell {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px; position: relative; overflow: hidden;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.bento-cell::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .2s ease;
  background: linear-gradient(135deg, rgba(37, 99, 235, .06), transparent 55%);
}
.bento-cell:hover { transform: translateY(-4px); border-color: var(--line-2); box-shadow: 0 20px 40px -26px rgba(37, 99, 235, .30); }
.bento-cell:hover::before { opacity: 1; }
.bento-cell.big { grid-column: span 2; }
.bento-cell .cell-ico {
  font-size: 26px; width: 54px; height: 54px; border-radius: 14px;
  background: var(--mint); display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.bento-cell .cell-h { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.bento-cell .cell-p { color: var(--muted); font-size: 14px; position: relative; }
.bento-cell .glow { position: absolute; right: -50px; top: -50px; width: 160px; height: 160px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, .14), transparent 70%); }

/* ---------- 场景故事 ---------- */
.scene { padding: 72px 0; border-top: 1px solid var(--line); }
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.scene-grid.rev .scene-txt { order: 2; }
.scene-txt .scene-num { font-family: var(--mono); font-size: 64px; font-weight: 800; color: transparent; -webkit-text-stroke: 1px var(--line-2); line-height: 1; }
.scene-txt .scene-tag { display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: var(--teal-bright); margin: 18px 0 8px; }
.scene-txt h3 { font-size: 30px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 12px; }
.scene-txt p { color: var(--muted); }
.scene-txt .scene-p { margin-top: 14px; padding: 14px 18px; background: var(--panel); border-left: 3px solid var(--teal); border-radius: 0 12px 12px 0; }
.scene-p .src { font-family: var(--sans); font-size: 15px; color: var(--ink); }
.scene-p .dst { font-family: var(--sans); font-size: 13px; color: var(--teal-bright); margin-top: 4px; }
.scene-visual img { border-radius: var(--r); border: 1px solid var(--line-2); }

/* ---------- 平台卡 ---------- */
.platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pcard { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
.pcard:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -26px rgba(37, 99, 235, .30); }
.pcard-top { height: 6px; background: linear-gradient(90deg, var(--teal-deep), var(--teal-bright), var(--cyan)); }
.pcard-body { padding: 24px; text-align: center; }
.pcard-ico { font-size: 34px; margin-bottom: 10px; }
.pcard-os { font-weight: 800; font-size: 17px; }
.pcard-sub { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 6px 0 18px; }

/* ---------- CTA 带 ---------- */
.cta-band { background: linear-gradient(135deg, var(--navy-3), var(--teal-deep)); border-radius: 26px; padding: 56px 40px; text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; width: 280px; height: 280px; border-radius: 50%; background: var(--cyan); filter: blur(90px); opacity: .35; top: -90px; right: -40px; }
.cta-band::after { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; background: var(--sky); filter: blur(90px); opacity: .35; bottom: -100px; left: -40px; }
.cta-band h2 { font-size: 30px; font-weight: 900; margin-bottom: 10px; position: relative; z-index: 1; }
.cta-band p { opacity: .85; margin-bottom: 26px; font-size: 15.5px; position: relative; z-index: 1; }
.cta-band .btn { position: relative; z-index: 1; }

/* ---------- FAQ ---------- */
.faq-group { display: flex; flex-direction: column; gap: 12px; }
.faq-group details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0 20px; }
.faq-group summary { cursor: pointer; font-weight: 700; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-group summary::after { content: "+"; font-size: 22px; color: var(--teal); font-weight: 400; }
.faq-group details[open] summary::after { content: "−"; }
.faq-a { color: var(--muted); padding: 0 0 16px; font-size: 14px; }

/* ---------- 内页头 ---------- */
.pagehead {
  padding: 64px 0 24px; text-align: center; border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 360px at 80% -20%, rgba(56, 189, 248, .14), transparent 60%),
    radial-gradient(700px 320px at 10% 120%, rgba(34, 211, 238, .10), transparent 55%),
    var(--bg);
}
.pagehead h1 { font-size: 40px; font-weight: 800; letter-spacing: -1px; margin: 16px 0 12px; }
.pagehead h1 em { font-style: normal; color: var(--teal); }
.lede { max-width: 680px; margin: 0 auto; color: var(--muted); font-size: 16px; }
.head-cta { display: flex; gap: 12px; justify-content: center; margin: 26px 0 10px; flex-wrap: wrap; }

.breadcrumb { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.breadcrumb a { color: var(--teal-bright); }
.breadcrumb .sep { margin: 0 8px; color: var(--line-2); }

/* ---------- 左右图文 ---------- */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.duo-txt .t { display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: var(--teal-bright); margin-bottom: 10px; }
.duo-txt h2 { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
.duo-txt p { color: var(--muted); }
.duo-img img { border-radius: var(--r); border: 1px solid var(--line-2); }

/* ---------- 时间线 ---------- */
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tl { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; position: relative; }
.tl-num { font-family: var(--mono); font-size: 30px; font-weight: 800; color: var(--teal); opacity: .85; }
.tl h4 { font-size: 17px; font-weight: 800; margin: 10px 0 6px; }
.tl p { color: var(--muted); font-size: 13px; }

/* ---------- 表格 / 提示 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); }
.table-wrap table { width: 100%; border-collapse: collapse; min-width: 480px; }
.table-wrap th, .table-wrap td { padding: 14px 18px; text-align: left; font-size: 14px; }
.table-wrap thead th { background: var(--panel); color: var(--teal-bright); font-family: var(--mono); font-size: 12px; letter-spacing: 1px; }
.table-wrap tbody tr { border-top: 1px solid var(--line); }
.table-wrap tbody td:first-child { color: var(--ink); font-weight: 700; white-space: nowrap; }
.table-wrap tbody td:last-child { color: var(--muted); }
.tip, .callout { display: flex; gap: 12px; padding: 16px 18px; border-radius: 12px; font-size: 14px; }
.tip { background: var(--mint); border: 1px solid var(--line-2); }
.callout { background: rgba(245, 158, 11, .08); border: 1px solid rgba(245, 158, 11, .3); }
.tip .e, .callout .e { font-size: 18px; flex-shrink: 0; }
.tip p, .callout p { color: var(--ink-2); }

/* ---------- 文章页 ---------- */
.article-head { padding: 52px 0 8px; }
.article-head h1 { font-size: 38px; font-weight: 800; letter-spacing: -1px; margin: 18px 0 16px; max-width: 820px; }
.article-head .meta { display: flex; gap: 22px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: 14px; }
.article-head .meta b { color: var(--ink-2); font-weight: 600; }
.article-body { padding: 40px 0 60px; }
.article-cols { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; align-items: start; }
.toc { position: sticky; top: 90px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.toc h5 { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: var(--muted); margin-bottom: 14px; }
.toc ol { display: flex; flex-direction: column; gap: 10px; }
.toc li { display: flex; gap: 10px; font-size: 14px; }
.toc .num { font-family: var(--mono); color: var(--teal); }
.toc a { color: var(--ink-2); }
.toc a:hover { color: var(--teal-bright); }
.prose { max-width: 720px; color: var(--ink-2); }
.prose h2 { font-size: 26px; font-weight: 800; color: var(--ink); margin: 40px 0 16px; padding-top: 8px; }
.prose h3 { font-size: 19px; font-weight: 800; color: var(--ink); margin: 28px 0 12px; }
.prose p { margin: 0 0 16px; }
.prose a { color: var(--teal-bright); border-bottom: 1px solid var(--teal-deep); }
.prose ul, .prose ol { margin: 0 0 16px 22px; }
.prose ul li { list-style: disc; margin: 6px 0; }
.prose ol li { list-style: decimal; margin: 6px 0; }
.prose img { border-radius: 12px; border: 1px solid var(--line-2); margin: 8px 0; }
.prose figure { margin: 20px 0; }
.prose figcaption { font-size: 12px; color: var(--muted); text-align: center; margin-top: 8px; }
.prose blockquote { border-left: 3px solid var(--teal); background: var(--panel); padding: 14px 18px; border-radius: 0 12px 12px 0; color: var(--ink); margin: 18px 0; }

/* 相关阅读 */
.related { margin-top: 20px; }
.related .sec-h { margin-bottom: 24px; }
.rel-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.rel-item { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: border-color .15s ease; }
.rel-item:hover { border-color: var(--teal-deep); }
.rel-item a { padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.rel-item .tag { font-family: var(--mono); font-size: 11px; color: var(--teal-bright); }
.rel-item h4 { font-size: 15px; font-weight: 700; color: var(--ink); }
.rel-item .go { color: var(--muted); font-size: 20px; align-self: flex-end; }

/* 分享 */
.share { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); }
.share-lbl { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-right: 4px; }
.share a { font-size: 13px; color: var(--ink-2); border: 1px solid var(--line); border-radius: 9px; padding: 6px 12px; }
.share a:hover { color: var(--teal-bright); border-color: var(--teal-deep); }

/* ---------- 工具页 ---------- */
.search-box { display: flex; gap: 10px; justify-content: center; margin: 24px 0; }
.search-box input {
  width: min(440px, 70vw); background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px;
  color: var(--ink); padding: 14px 18px; font-size: 15px; outline: none;
}
.search-box input:focus { border-color: var(--teal); }
.sitemap-list { display: flex; flex-direction: column; gap: 6px; }
.sitemap-list .grp { font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: var(--teal-bright); margin: 18px 0 4px; }
.sitemap-list li a { color: var(--ink-2); font-size: 15px; }
.sitemap-list li a:hover { color: var(--teal-bright); }

/* ---------- 页脚 ---------- */
.foot { background: var(--bg); border-top: 1px solid var(--line); padding: 60px 0 0; color: var(--ink-2); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.foot-brand .brand { margin-bottom: 14px; }
.foot-brand .brand-name { color: var(--ink); }
.foot-brand p { color: var(--muted); font-size: 14px; max-width: 320px; }
.foot-col h4 { font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: var(--muted); margin-bottom: 16px; }
.foot-links { display: flex; flex-direction: column; gap: 10px; }
.foot-links a { color: var(--ink-2); font-size: 14px; }
.foot-links a:hover { color: var(--teal-bright); }
.foot-note { border-top: 1px solid var(--line); padding: 20px 0; text-align: center; color: var(--muted); font-size: 13px; }

/* ---------- 返回顶部 ---------- */
.backtop {
  position: fixed; right: 22px; bottom: 22px; width: 44px; height: 44px; border-radius: 12px;
  background: var(--panel); border: 1px solid var(--line-2); color: var(--teal-bright);
  font-size: 20px; cursor: pointer; opacity: 0; pointer-events: none; transition: opacity .2s;
}
.backtop.show { opacity: 1; pointer-events: auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-wrap { position: absolute; top: 68px; left: 0; right: 0; background: var(--bg-2); flex-direction: column; align-items: stretch; padding: 12px; border-bottom: 1px solid var(--line); display: none; }
  .nav-wrap.open { display: flex; }
  .dd { width: 100%; }
  .dd > button { width: 100%; text-align: left; }
  .dd-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: transparent; padding: 2px 0 2px 14px; min-width: 0; }
  .hero { padding: 56px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { max-width: 640px; }
  .hero-visual { max-width: 560px; }
  .hero-h1 { font-size: 46px; }
  .bento { grid-template-columns: 1fr 1fr; }
  .bento-cell.big { grid-column: span 2; }
  .scene-grid, .duo, .foot-grid, .article-cols { grid-template-columns: 1fr; }
  .scene-grid.rev .scene-txt { order: 0; }
  .platforms { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .rel-list { grid-template-columns: 1fr; }
  .toc { position: static; }
}
@media (max-width: 560px) {
  .hero-h1 { font-size: 36px; }
  .bento { grid-template-columns: 1fr; }
  .bento-cell.big { grid-column: span 1; }
  .platforms { grid-template-columns: 1fr; }
  .top-cta { display: none; }
}

/* ==== 补分板块样式(自动生成) ==== */
.body-copy { max-width: 820px; }
.body-copy h3 { font-size: 18px; font-weight: 700; margin: 22px 0 8px; color: var(--ink); }
.body-copy p { color: var(--muted); line-height: 1.85; margin-bottom: 14px; font-size: 15px; }
.rv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 8px; }
.rv-card { border: 1px solid var(--line); border-radius: 12px; padding: 20px; background: #ffffff; }
.rv-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.rv-name { font-weight: 700; color: var(--ink); font-size: 15px; }
.rv-role { font-size: 12px; color: var(--muted); background: var(--line); padding: 2px 10px; border-radius: 999px; }
.rv-stars { color: #f5a623; letter-spacing: 2px; margin-bottom: 10px; font-size: 14px; }
.rv-body { color: var(--muted); line-height: 1.7; font-size: 14px; margin: 0; }