/* ==========================================================================
   反差场 REVERSE FIELD — 共享设计系统
   概念：一半沉寂 / 一半炸裂。近黑底色 + 紫→洋红→青电光渐变。
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  --bg:        #07070d;
  --bg-2:      #0b0b16;
  --surface:   #12121f;
  --surface-2: #181828;
  --surface-3: #1f1f33;

  --line:      rgba(255, 255, 255, .08);
  --line-str:  rgba(255, 255, 255, .16);

  --text:      #f4f4ff;
  --muted:     #9a9ab8;
  --dim:       #666680;

  --violet:    #7c5cff;
  --magenta:   #ff2d95;
  --cyan:      #22d3ee;
  --lime:      #c6ff3d;
  --amber:     #ffb020;

  --grad-1:    linear-gradient(120deg, #7c5cff, #ff2d95 55%, #22d3ee);
  --grad-2:    linear-gradient(120deg, #ff2d95, #ff8a3d);
  --grad-3:    linear-gradient(120deg, #22d3ee, #7c5cff);
  --grad-soft: linear-gradient(160deg, rgba(124, 92, 255, .16), rgba(255, 45, 149, .10) 55%, rgba(34, 211, 238, .12));

  --radius:    20px;
  --radius-sm: 12px;
  --radius-lg: 30px;

  --shadow-sm: 0 8px 24px -12px rgba(0, 0, 0, .8);
  --shadow:    0 24px 70px -28px rgba(124, 92, 255, .6);
  --glow-v:    0 0 40px -6px rgba(124, 92, 255, .7);
  --glow-m:    0 0 40px -6px rgba(255, 45, 149, .65);
  --glow-c:    0 0 40px -6px rgba(34, 211, 238, .6);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --font-display: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI Black", Impact, system-ui, sans-serif;

  --nav-h: 68px;
  --maxw: 1240px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  /* 全局噪点网格 + 光斑 */
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(255, 45, 149, .16), transparent 62%),
    radial-gradient(760px 520px at 6% 4%, rgba(124, 92, 255, .18), transparent 60%),
    radial-gradient(720px 620px at 50% 112%, rgba(34, 211, 238, .12), transparent 62%),
    linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px) 0 0 / 100% 46px,
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px) 0 0 / 46px 100%;
}

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

a { color: inherit; text-decoration: none; transition: color .2s ease, opacity .2s ease; }

h1, h2, h3, h4 { margin: 0; line-height: 1.16; font-weight: 800; font-family: var(--font-display); letter-spacing: -.015em; }

p { margin: 0 0 1em; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--magenta); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--violet), var(--magenta)); border-radius: 20px; border: 2px solid var(--bg); }

/* ---------- 布局工具 ---------- */
.wrap { width: min(100% - 40px, var(--maxw)); margin-inline: auto; position: relative; z-index: 2; }

.section { padding: 88px 0; position: relative; z-index: 2; }
.section--tight { padding: 56px 0; }

.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.between { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.center { text-align: center; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.mono { font-family: var(--font-mono); }

/* ---------- 排版 ---------- */
.display { font-size: clamp(2.6rem, 7.4vw, 6.4rem); line-height: .98; letter-spacing: -.03em; font-weight: 900; }
.h1 { font-size: clamp(2rem, 4.6vw, 3.6rem); }
.h2 { font-size: clamp(1.6rem, 3.4vw, 2.7rem); }
.h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
.lead { font-size: clamp(1.02rem, 1.5vw, 1.2rem); color: var(--muted); max-width: 62ch; }

.grad-text {
  background: var(--grad-1);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.outline-text {
  color: transparent;
  -webkit-text-stroke: 1.4px rgba(255, 255, 255, .42);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .28em; text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--grad-1); border-radius: 2px; }

.section-head { max-width: 720px; margin-bottom: 42px; }
.section-head .h2 { margin: 14px 0 12px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 26px; border-radius: 999px;
  font-weight: 700; font-size: .95rem; letter-spacing: .01em;
  border: 1px solid var(--line-str);
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, .3); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.btn--primary {
  background: var(--grad-1); color: #0a0a12; border-color: transparent;
  box-shadow: var(--glow-v);
  background-size: 180% 180%;
}
.btn--primary:hover { box-shadow: 0 0 60px -8px rgba(255, 45, 149, .8); }
.btn--ghost { background: transparent; }
.btn--ghost:hover { background: rgba(255, 255, 255, .06); }
.btn--sm { padding: 9px 18px; font-size: .84rem; }
.btn--block { width: 100%; }

/* ---------- 徽标 / 标签 ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 999px;
  font-size: .84rem; font-weight: 600; color: var(--muted);
  border: 1px solid var(--line); background: rgba(255, 255, 255, .03);
  cursor: pointer; transition: all .2s ease; white-space: nowrap;
}
.chip:hover { color: var(--text); border-color: var(--line-str); }
.chip.is-active { color: #0a0a12; background: var(--grad-1); border-color: transparent; box-shadow: var(--glow-v); }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid var(--line-str); color: var(--muted); background: rgba(255, 255, 255, .04);
}
.tag--hot   { color: #ffd0e6; border-color: rgba(255, 45, 149, .45); background: rgba(255, 45, 149, .14); }
.tag--new   { color: #cdf7ff; border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .12); }
.tag--rise  { color: #e2d7ff; border-color: rgba(124, 92, 255, .45); background: rgba(124, 92, 255, .16); }
.tag--rev   { color: #eaffc0; border-color: rgba(198, 255, 61, .4);  background: rgba(198, 255, 61, .12); }

.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 10px var(--lime); }
.dot--live { animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.card:hover { transform: translateY(-5px); border-color: var(--line-str); box-shadow: var(--shadow); }
.card__body { padding: 22px; }
.card__pad { padding: 26px; }

.card--glow::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: var(--grad-soft); opacity: 0; transition: opacity .3s ease;
}
.card--glow:hover::after { opacity: 1; }

/* 视频卡（含缩略图占位） */
.vcard { display: block; }
.vthumb {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(124, 92, 255, .55), transparent 55%),
    radial-gradient(120% 120% at 90% 110%, rgba(255, 45, 149, .5), transparent 55%),
    linear-gradient(140deg, #1a1a2e, #0d0d18);
}
.vthumb--c { background: radial-gradient(120% 120% at 18% 0%, rgba(34, 211, 238, .5), transparent 55%), radial-gradient(120% 120% at 92% 112%, rgba(124, 92, 255, .5), transparent 55%), linear-gradient(140deg, #10202c, #0b0b16); }
.vthumb--m { background: radial-gradient(120% 120% at 18% 0%, rgba(255, 45, 149, .55), transparent 55%), radial-gradient(120% 120% at 92% 112%, rgba(255, 176, 32, .42), transparent 55%), linear-gradient(140deg, #2a1024, #0d0d18); }
.vthumb--l { background: radial-gradient(120% 120% at 18% 0%, rgba(198, 255, 61, .42), transparent 55%), radial-gradient(120% 120% at 92% 112%, rgba(34, 211, 238, .45), transparent 55%), linear-gradient(140deg, #16240f, #0b0b16); }

.vthumb::before {
  /* 斜切「反差」分割隐喻 */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 47.6%, rgba(255, 255, 255, .5) 48%, rgba(255, 255, 255, .5) 48.4%, transparent 48.8%);
  opacity: .35;
}
.vthumb::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, .16) 0 2px, transparent 2px 4px);
  opacity: .5; mix-blend-mode: multiply;
}
.vthumb__label {
  position: absolute; z-index: 2; left: 14px; bottom: 12px;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase;
  color: rgba(255, 255, 255, .85); text-shadow: 0 2px 10px rgba(0, 0, 0, .6);
}
.vthumb__badge { position: absolute; z-index: 2; top: 12px; left: 12px; }
.vthumb__dur {
  position: absolute; z-index: 2; right: 12px; bottom: 12px;
  font-family: var(--font-mono); font-size: .72rem; padding: 3px 8px; border-radius: 6px;
  background: rgba(0, 0, 0, .55); backdrop-filter: blur(4px);
}
.vthumb__play {
  position: absolute; z-index: 3; inset: 0; display: grid; place-items: center;
  opacity: 0; transition: opacity .25s ease; background: rgba(7, 7, 13, .35);
}
.vcard:hover .vthumb__play { opacity: 1; }
.play-btn {
  width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center;
  background: var(--grad-1); color: #08080f; box-shadow: var(--glow-m); font-size: 1.1rem;
}
.vcard__meta { padding: 16px 18px 20px; }
.vcard__title { font-size: 1.02rem; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.vcard:hover .vcard__title { color: #fff; }
.vcard__stats { display: flex; gap: 14px; font-size: .78rem; color: var(--dim); font-family: var(--font-mono); }

/* 反差双栏（before / after） */
.contrast-pair { display: grid; grid-template-columns: 1fr auto 1fr; align-items: stretch; gap: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.contrast-pair__side { padding: 22px; min-height: 128px; display: flex; flex-direction: column; justify-content: center; }
.contrast-pair__side--before { background: linear-gradient(160deg, #0e0e18, #0a0a12); }
.contrast-pair__side--after  { background: var(--grad-soft), linear-gradient(160deg, #16122a, #0d0d1a); }
.contrast-pair__divider { width: 2px; background: var(--grad-1); box-shadow: var(--glow-m); }
.contrast-pair h4 { font-size: .74rem; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); font-family: var(--font-mono); margin-bottom: 10px; }

/* ---------- 反差对比滑块（可拖拽） ---------- */
.compare {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-str); aspect-ratio: 16 / 9; user-select: none; touch-action: none;
}
.compare__layer { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; }
.compare__layer--b { background: linear-gradient(150deg, #0d0d16, #08080e); color: var(--muted); }
.compare__layer--a { background: var(--grad-soft), linear-gradient(150deg, #1b1330, #0d0d1a); clip-path: inset(0 0 0 50%); }
.compare__tag { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; }
.compare__tag--b { color: var(--dim); }
.compare__tag--a { color: var(--cyan); }
.compare__big { font-size: clamp(1.4rem, 4vw, 2.6rem); font-weight: 900; margin-top: 10px; }
.compare__handle {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 3px; background: var(--grad-1); transform: translateX(-50%);
  box-shadow: var(--glow-m); cursor: ew-resize; z-index: 4;
}
.compare__handle::after {
  content: "⇄"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center;
  background: var(--grad-1); color: #08080f; font-size: 1.1rem; font-weight: 900;
}

/* ---------- 统计数字 ---------- */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__num { font-family: var(--font-display); font-size: clamp(2rem, 4.4vw, 3.4rem); font-weight: 900; letter-spacing: -.03em; }
.stat__label { font-size: .84rem; color: var(--muted); letter-spacing: .04em; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  height: var(--nav-h);
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.nav.is-stuck {
  background: rgba(8, 8, 15, .82);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: min(100% - 40px, var(--maxw)); margin-inline: auto; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 900; font-size: 1.1rem; letter-spacing: -.02em; }
.brand__mark {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: var(--grad-1); color: #08080f; font-weight: 900; font-size: .9rem; box-shadow: var(--glow-v);
  position: relative; overflow: hidden; flex: none;
}
.brand__mark::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 48%, rgba(255, 255, 255, .6) 49.4%, transparent 51%); }
.brand__sub { font-family: var(--font-mono); font-size: .6rem; letter-spacing: .24em; color: var(--dim); display: block; margin-top: -2px; }

.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links a {
  padding: 9px 15px; border-radius: 999px; font-size: .9rem; font-weight: 600; color: var(--muted);
}
.nav__links a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.nav__links a.is-active { color: var(--text); background: rgba(255, 255, 255, .07); }

.nav__cta { display: flex; align-items: center; gap: 10px; }
.nav__toggle { display: none; width: 42px; height: 42px; border-radius: 11px; border: 1px solid var(--line-str); background: rgba(255, 255, 255, .04); place-items: center; font-size: 1.15rem; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(56px, 9vw, 108px) 0 72px; z-index: 2; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.hero__title { margin: 20px 0 22px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero__note { margin-top: 20px; font-size: .82rem; color: var(--dim); font-family: var(--font-mono); }

.ticker {
  overflow: hidden; border-block: 1px solid var(--line); padding: 16px 0;
  background: linear-gradient(90deg, transparent, rgba(124, 92, 255, .08), transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ticker__track { display: flex; gap: 40px; width: max-content; animation: marquee 34s linear infinite; }
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__item { display: flex; align-items: center; gap: 12px; font-family: var(--font-mono); font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.ticker__item b { color: var(--text); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- 页头（内页） ---------- */
.pagehead { padding: 64px 0 40px; position: relative; z-index: 2; }
.pagehead .display { font-size: clamp(2.2rem, 5.6vw, 4.4rem); margin: 16px 0 18px; }
.crumbs { display: flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: .76rem; letter-spacing: .1em; color: var(--dim); text-transform: uppercase; }
.crumbs a:hover { color: var(--text); }
.crumbs span { opacity: .5; }

/* ---------- 筛选条 ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ---------- 榜单 ---------- */
.rank-list { display: flex; flex-direction: column; gap: 12px; }
.rank-item {
  display: grid; grid-template-columns: 62px 1fr auto; align-items: center; gap: 20px;
  padding: 18px 22px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: linear-gradient(90deg, var(--surface), var(--bg-2));
  transition: border-color .25s ease, transform .25s ease, background .25s ease;
}
.rank-item:hover { border-color: var(--line-str); transform: translateX(6px); }
.rank-item__no { font-family: var(--font-display); font-size: 2rem; font-weight: 900; line-height: 1; color: var(--dim); text-align: center; }
.rank-item:nth-child(1) .rank-item__no { background: var(--grad-2); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.rank-item:nth-child(2) .rank-item__no { color: #e6e6f5; }
.rank-item:nth-child(3) .rank-item__no { color: #ffb020; }
.rank-item__title { font-weight: 700; font-size: 1.04rem; }
.rank-item__sub { font-size: .8rem; color: var(--dim); font-family: var(--font-mono); margin-top: 3px; }
.rank-item__score { text-align: right; font-family: var(--font-mono); font-size: .92rem; color: var(--cyan); }
.rank-item__score small { display: block; color: var(--dim); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }

/* ---------- 步骤流程 ---------- */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { position: relative; padding: 24px 24px 24px 78px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; left: 22px; top: 22px;
  font-family: var(--font-mono); font-size: 1.05rem; font-weight: 700;
  color: transparent; -webkit-text-stroke: 1.2px rgba(124, 92, 255, .9);
}
.step h4 { margin-bottom: 6px; font-size: 1.06rem; }
.step p { margin: 0; color: var(--muted); font-size: .93rem; }

/* ---------- 手风琴 / FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq__item { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); overflow: hidden; }
.faq__q { width: 100%; text-align: left; padding: 20px 22px; display: flex; justify-content: space-between; gap: 16px; font-weight: 700; font-size: 1.02rem; align-items: center; }
.faq__q span:last-child { color: var(--cyan); font-size: 1.3rem; transition: transform .25s ease; flex: none; }
.faq__item.is-open .faq__q span:last-child { transform: rotate(45deg); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq__a p { padding: 0 22px 20px; margin: 0; color: var(--muted); font-size: .94rem; }

/* ---------- 评论 ---------- */
.comment { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.comment__ava { width: 42px; height: 42px; border-radius: 50%; flex: none; display: grid; place-items: center; font-weight: 800; color: #08080f; background: var(--grad-1); }
.comment__ava--c { background: var(--grad-3); }
.comment__ava--m { background: var(--grad-2); }
.comment__head { display: flex; align-items: center; gap: 10px; font-size: .88rem; }
.comment__name { font-weight: 700; }
.comment__time { color: var(--dim); font-family: var(--font-mono); font-size: .74rem; }
.comment__body { margin: 6px 0 0; color: var(--muted); font-size: .94rem; }

/* ---------- 头像 / 创作者 ---------- */
.avatar {
  width: 100%; aspect-ratio: 1; border-radius: 22px; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 900; font-size: 2rem; color: #08080f;
  background: var(--grad-1); position: relative; overflow: hidden;
}
.avatar--c { background: var(--grad-3); }
.avatar--m { background: var(--grad-2); }
.avatar--l { background: linear-gradient(140deg, #c6ff3d, #22d3ee); }
.avatar::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 47%, rgba(255, 255, 255, .35) 48.6%, transparent 50%); }
.creator__name { font-weight: 800; margin-top: 14px; }
.creator__role { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em; color: var(--dim); text-transform: uppercase; }
.creator__stat { display: flex; gap: 14px; margin-top: 12px; font-size: .8rem; color: var(--muted); font-family: var(--font-mono); }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); margin-top: 60px; padding: 56px 0 34px; position: relative; z-index: 2; background: linear-gradient(180deg, transparent, rgba(124, 92, 255, .05)); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; }
.footer__col h5 { font-size: .76rem; letter-spacing: .18em; text-transform: uppercase; color: var(--dim); font-family: var(--font-mono); margin-bottom: 14px; font-weight: 700; }
.footer__col a { display: block; padding: 5px 0; color: var(--muted); font-size: .92rem; }
.footer__col a:hover { color: var(--text); }
.footer__bottom { margin-top: 42px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .82rem; color: var(--dim); }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; padding: 24px; }
.modal.is-open { display: flex; }
.modal__overlay { position: absolute; inset: 0; background: rgba(4, 4, 8, .78); backdrop-filter: blur(8px); }
.modal__box {
  position: relative; z-index: 2; width: min(720px, 100%);
  background: linear-gradient(180deg, var(--surface-2), var(--bg-2));
  border: 1px solid var(--line-str); border-radius: var(--radius); padding: 30px;
  box-shadow: var(--shadow); animation: pop .28s ease both;
}
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.97); } to { opacity: 1; transform: none; } }
.modal__close { position: absolute; top: 16px; right: 16px; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line-str); display: grid; place-items: center; font-size: 1.1rem; background: rgba(255, 255, 255, .04); }
.modal__close:hover { background: rgba(255, 255, 255, .1); }

/* ---------- 表单 ---------- */
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field label { font-size: .84rem; color: var(--muted); font-weight: 600; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm);
  background: var(--bg); border: 1px solid var(--line-str); color: var(--text); font-family: inherit; font-size: .95rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(124, 92, 255, .22); }
.field textarea { min-height: 120px; resize: vertical; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .4s; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- 回到顶部 ---------- */
.totop {
  position: fixed; right: 24px; bottom: 24px; z-index: 80;
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-1); color: #08080f; font-size: 1.2rem; font-weight: 900;
  box-shadow: var(--glow-v); opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s;
}
.totop.is-on { opacity: 1; visibility: visible; transform: none; }

/* ---------- 其他组件 ---------- */
.bar { height: 8px; border-radius: 8px; background: rgba(255, 255, 255, .07); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 8px; background: var(--grad-1); }

.quote { border-left: 3px solid; border-image: var(--grad-1) 1; padding: 8px 0 8px 22px; font-size: 1.12rem; color: var(--text); font-weight: 500; }

.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line-str), transparent); margin: 46px 0; }

.marquee-note { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }

.badge-row { display: flex; gap: 10px; flex-wrap: wrap; }

.pill-stat { padding: 16px 20px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; gap: 4px; }
.pill-stat b { font-family: var(--font-display); font-size: 1.5rem; }

.list-check { display: grid; gap: 12px; }
.list-check li { position: relative; padding-left: 30px; color: var(--muted); font-size: .95rem; }
.list-check li::before { content: "◆"; position: absolute; left: 0; top: 0; color: var(--cyan); font-size: .8rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 36px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(8, 8, 15, .97); backdrop-filter: blur(18px); padding: 18px;
    border-bottom: 1px solid var(--line); transform: translateY(-140%); transition: transform .35s ease; z-index: 55;
  }
  .nav__links.is-open { transform: none; }
  .nav__links a { padding: 14px 16px; font-size: 1rem; }
  .nav__toggle { display: grid; }
  .nav__cta .btn--primary { display: none; }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .rank-item { grid-template-columns: 44px 1fr; }
  .rank-item__score { grid-column: 2; text-align: left; }
  .section { padding: 62px 0; }
  .compare__layer { padding: 14px; }
}

@media (max-width: 560px) {
  .grid--4 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
  .display { font-size: clamp(2.2rem, 11vw, 3.4rem); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}