/* ==========================================================================
   ehviewer · ehviewergw.net  共享样式
   档位：石墨深灰底 + 暗夜蓝主色 + 松墨绿辅助 + 藕荷紫点缀
   渲染语言：导轨带（.rail）+ 左缘竖条（.cap/.blk/.xe）+ 取景角标（.shot）
   ========================================================================== */

:root {
  --bg: #14161b;
  --bg2: #1a1d24;
  --bg3: #20242c;
  --card: #252a34;
  --card2: #2c3340;
  --line: #363e4c;
  --line2: #46505f;
  --pri: #4e86cc;
  --pri-d: #2e5a90;
  --pri-l: #82b2e8;
  --acc: #35836a;
  --acc-d: #1e5743;
  --acc-l: #d6ede4;
  --vio: #a08cd8;
  --ink: #e6ebf2;
  --ink2: #a9b4c2;
  --ink3: #7c8899;
  --wrap: 1140px;
  --sh: 0 18px 42px rgba(0, 0, 0, .44);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--pri-l); text-decoration: none; }
a:hover { color: var(--acc-l); }
p { margin: 0 0 16px; }
ul { margin: 0 0 16px; padding-left: 20px; }
li { margin: 6px 0; }
h1, h2, h3 { line-height: 1.34; margin: 0 0 14px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }

.skip {
  position: absolute; left: 0; top: 0; z-index: 99;
  width: 1px; height: 1px; overflow: hidden; white-space: nowrap;
  clip-path: inset(50%);
  background: var(--pri); color: #fff; padding: 0;
}
.skip:focus {
  width: auto; height: auto; overflow: visible; clip-path: none;
  padding: 10px 18px; border-radius: 0 0 12px 0;
}

/* ── 入场动效：纯 CSS，与滚动位置无关 ─────────────────────────────── */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.rise { animation: rise .55s cubic-bezier(.2, .7, .3, 1) both; }
.rise.d1 { animation-delay: .08s; }
.rise.d2 { animation-delay: .16s; }
@media (prefers-reduced-motion: reduce) {
  .rise { animation: none; opacity: 1; transform: none; }
}

/* ── 顶栏 ─────────────────────────────────────────────────────────── */
.top {
  position: sticky; top: 0; z-index: 60;
  background: rgba(20, 22, 27, .93);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(9px);
}
.top__in {
  position: relative;
  width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 12px 22px;
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; color: var(--ink); }
.brand__logo { width: 38px; height: 38px; border-radius: 11px; flex: none; }
.brand__name { font-size: 19px; font-weight: 700; letter-spacing: .4px; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--ink2); font-size: 15px; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--pri-l); border-bottom-color: var(--pri); }
.burger {
  display: none; order: 2;
  background: transparent; border: 1px solid var(--line2); border-radius: 10px;
  color: var(--ink2); font-size: 14px; padding: 7px 12px; font-family: inherit; cursor: pointer;
}
.burger:hover { color: var(--ink); border-color: var(--pri); }

.btn {
  display: inline-block; color: #fff;
  background: linear-gradient(135deg, var(--pri), var(--pri-d));
  padding: 13px 30px; border-radius: 30px; font-weight: 700; font-size: 15px;
  box-shadow: 0 10px 26px rgba(46, 90, 144, .42);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 30px rgba(46, 90, 144, .55); }
.btn--sm { order: 3; padding: 9px 20px; font-size: 14px; flex: none; }
.btn--ghost {
  background: transparent; border: 1px solid var(--line2); color: var(--ink);
  box-shadow: none;
}
.btn--ghost:hover { color: var(--ink); border-color: var(--pri); box-shadow: none; }
.btnrow { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero { position: relative; overflow: hidden;
  background: linear-gradient(160deg, #181c24, #14161b 52%, #111318); }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(720px 380px at 8% -12%, rgba(78, 134, 204, .30), transparent 62%),
    radial-gradient(620px 340px at 97% 4%, rgba(53, 131, 106, .26), transparent 62%);
}
.hero::after {
  content: ""; position: absolute; right: 0; top: 0; bottom: 0; width: 44%;
  pointer-events: none; opacity: .5;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 34%);
  mask-image: linear-gradient(90deg, transparent, #000 34%);
}
.hero__in {
  position: relative; z-index: 1;
  width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 62px 22px 68px;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 44px; align-items: center;
}
.kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; letter-spacing: 2.4px; text-transform: uppercase;
  color: var(--acc-l); margin-bottom: 16px;
}
.kicker::before {
  content: ""; width: 9px; height: 9px; border-radius: 2px;
  background: var(--acc); transform: rotate(45deg);
}
.hero h1 { font-size: 42px; margin-bottom: 18px; }
.hero__badge {
  display: inline-block; vertical-align: middle; margin-left: 12px;
  font-size: 12px; font-weight: 400; letter-spacing: 0; text-transform: none;
  color: var(--pri-l); border: 1px solid var(--pri-d); border-radius: 20px; padding: 3px 12px;
}
.lead { font-size: 17px; color: var(--ink2); max-width: 52ch; }
.hero__meta {
  list-style: none; padding: 0; margin: 22px 0 26px;
  display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 14px; color: var(--ink3);
}
.hero__meta li { margin: 0; display: flex; align-items: center; gap: 8px; }
.hero__meta li::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--pri);
}
.cta-note { font-size: 13px; color: var(--ink3); margin: 14px 0 0; }
.hero__shot { margin: 0; }
.hero__shot img {
  width: 100%; height: auto; max-width: 320px; margin: 0 auto;
  border-radius: 24px; box-shadow: var(--sh);
}

/* ── 区块骨架 ─────────────────────────────────────────────────────── */
.rail {
  position: relative; height: 26px; max-width: var(--wrap); margin: 0 auto; padding: 0 22px;
  background-image: repeating-linear-gradient(-45deg, var(--line) 0 1px, transparent 1px 9px);
  background-size: 100% 12px; background-position: center; background-repeat: no-repeat;
  opacity: .85;
}
.rail::before, .rail::after {
  content: ""; position: absolute; top: 50%; width: 58px; height: 2px; transform: translateY(-50%);
}
.rail::before { left: 22px; background: linear-gradient(90deg, var(--pri), transparent); }
.rail::after { right: 22px; background: linear-gradient(270deg, var(--acc), transparent); }

.sec { padding: 62px 0; }
.sec__h { font-size: 28px; }
.sub { color: var(--ink2); font-size: 16px; margin-bottom: 30px; max-width: 62ch; }

/* ── 事实条 ───────────────────────────────────────────────────────── */
.facts { padding: 56px 22px 0; max-width: var(--wrap); margin: 0 auto; }
.facts__in {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
}
.fact { padding: 20px 22px; border-left: 1px solid var(--line); }
.fact:first-child { border-left: none; }
.fact__n { display: block; font-size: 24px; font-weight: 700; color: var(--pri-l); letter-spacing: .5px; }
.fact__k { display: block; font-size: 13px; color: var(--ink3); margin-top: 4px; }

/* ── 能力卡 ───────────────────────────────────────────────────────── */
.caps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.cap {
  background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--pri);
  border-radius: 14px; padding: 24px 24px 20px;
}
.cap__ico { width: 34px; height: 34px; color: var(--pri-l); margin-bottom: 12px; }
.cap__ico svg { width: 34px; height: 34px; display: block; }
.cap__h { font-size: 18px; margin-bottom: 8px; }
.cap__p { color: var(--ink2); font-size: 15px; margin-bottom: 12px; }
.cap__list { list-style: none; padding: 0; margin: 0; }
.cap__list li { font-size: 14px; color: var(--ink3); padding-left: 16px; position: relative; }
.cap__list li::before {
  content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 6px;
  background: var(--acc); border-radius: 1px; transform: rotate(45deg);
}
.tag {
  display: inline-block; font-size: 12px; color: var(--acc-l);
  border: 1px solid var(--acc-d); background: rgba(53, 131, 106, .16);
  border-radius: 20px; padding: 2px 11px; margin: 0 6px 6px 0;
}

/* ── 截图陈列 ─────────────────────────────────────────────────────── */
.shots { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.shot {
  position: relative; margin: 0; padding: 12px 12px 14px;
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  transition: border-color .25s, transform .25s;
}
.shot:hover { border-color: var(--pri); transform: translateY(-3px); }
.shot::before, .shot::after {
  content: ""; position: absolute; width: 16px; height: 16px; border: 2px solid var(--acc); opacity: .55;
}
.shot::before { top: -2px; left: -2px; border-right: none; border-bottom: none; border-radius: 20px 0 0 0; }
.shot::after { bottom: -2px; right: -2px; border-left: none; border-top: none; border-radius: 0 0 20px 0; }
.shot img { width: 100%; height: auto; display: block; border-radius: 12px; }
.shot__no {
  position: absolute; top: 20px; left: 20px; z-index: 1;
  font-size: 11px; letter-spacing: 1px; color: var(--ink);
  background: rgba(20, 22, 27, .82); border: 1px solid var(--line2);
  border-radius: 12px; padding: 2px 10px;
}
.shot__cap { font-size: 13px; color: var(--ink2); margin: 12px 2px 0; line-height: 1.6; }

/* ── 阶梯（竖向导轨 + 节点）────────────────────────────────────────── */
.ladder { margin: 0; padding: 4px 0 4px 0; list-style: none; border-left: 1px dashed var(--line2); }
.rung { position: relative; padding: 0 0 26px 30px; }
.rung:last-child { padding-bottom: 0; }
.rung::before {
  content: ""; position: absolute; left: -6px; top: 9px;
  width: 11px; height: 11px; border-radius: 50%; background: var(--bg);
  border: 2px solid var(--pri);
}
.rung__no {
  display: inline-block; font-size: 12px; color: var(--acc-l); letter-spacing: 1.6px;
  border: 1px solid var(--acc-d); border-radius: 4px; padding: 1px 8px; margin-bottom: 8px;
}
.rung__h { font-size: 17px; margin-bottom: 6px; }
.rung__p { color: var(--ink2); font-size: 15px; margin: 0; }

/* ── 入口卡 ───────────────────────────────────────────────────────── */
.xentry { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.xe {
  display: block; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-left: 3px solid var(--acc);
  border-radius: 14px; padding: 22px 24px; transition: border-color .25s, background .25s;
}
.xe:hover { color: var(--ink); background: var(--card2); border-left-color: var(--pri); }
.xe__h { font-size: 18px; margin-bottom: 8px; }
.xe__p { color: var(--ink2); font-size: 15px; margin: 0 0 12px; }
.xe__go { font-size: 14px; color: var(--pri-l); }
.xe__go::after { content: " \203a"; }

/* ── 评价 ─────────────────────────────────────────────────────────── */
.score {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  border: 1px solid var(--line); border-radius: 14px; padding: 16px 22px; margin-bottom: 24px;
  background: var(--card);
}
.score b { font-size: 30px; color: var(--vio); }
.score span { font-size: 14px; color: var(--ink3); }
.quotes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.quote {
  margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 22px 18px;
}
.quote__t { font-size: 15px; color: var(--ink2); margin-bottom: 14px; }
.quote__m { font-size: 13px; color: var(--pri-l); margin: 0; }

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq details > summary {
  cursor: pointer; padding: 18px 40px 18px 0; position: relative;
  font-size: 16px; font-weight: 600; color: var(--ink); list-style: none;
}
.faq details > summary::-webkit-details-marker { display: none; }
.faq details > summary::after {
  content: "+"; position: absolute; right: 8px; top: 16px;
  color: var(--acc); font-size: 20px; font-weight: 400;
}
.faq details[open] > summary::after { content: "\2212"; }
.faq details > ul, .faq details > div { padding: 0 0 20px; }
.faq details > div p { color: var(--ink2); font-size: 15px; }

/* ── 通栏 CTA ─────────────────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(120deg, #1c2331, #182029 55%, #16211d);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 58px 0; text-align: center;
}
.cta-band__h { font-size: 27px; margin-bottom: 10px; }
.cta-band__p { color: var(--ink2); font-size: 16px; margin-bottom: 26px; }
.cta-band .btnrow { justify-content: center; }

/* ── 内页 ─────────────────────────────────────────────────────────── */
.page-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(150deg, #1b2130, #161a22 60%, #131a1a);
  border-bottom: 1px solid var(--line); padding: 44px 0 38px;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(620px 300px at 92% -20%, rgba(78, 134, 204, .26), transparent 64%);
}
.page-hero .wrap { position: relative; z-index: 1; }
.crumb { font-size: 13px; color: var(--ink3); margin-bottom: 14px; }
.crumb a { color: var(--ink3); }
.crumb a:hover { color: var(--pri-l); }
.crumb__sep { margin: 0 8px; color: var(--line2); }
.page-hero h1 { font-size: 33px; margin-bottom: 14px; }

.anchors {
  position: sticky; top: 68px; z-index: 40;
  background: rgba(20, 22, 27, .95); border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.anchors .wrap { display: flex; gap: 10px; overflow-x: auto; padding-top: 10px; padding-bottom: 10px; }
.anch { flex: none; font-size: 13px; color: var(--ink2); border: 1px solid var(--line);
  border-radius: 20px; padding: 5px 14px; }
.anch:hover { color: var(--ink); border-color: var(--pri); }

.doc { padding: 52px 0 20px; }
.blk { border-left: 3px solid var(--line2); padding: 2px 0 2px 22px; margin: 0 0 40px; }
.blk__h { font-size: 23px; margin-bottom: 12px; }
.blk__p { color: var(--ink2); font-size: 16px; }
.blk__list { color: var(--ink2); font-size: 16px; }
.blk__note {
  font-size: 14px; color: var(--ink3); background: var(--bg3);
  border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 0 0 18px;
}
.kv { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 0 0 20px; }
.kv__k, .kv__v { padding: 11px 18px; font-size: 15px; border-bottom: 1px solid var(--line); }
.kv__k { background: var(--bg3); color: var(--ink); font-weight: 600; }
.kv__v { color: var(--ink2); }
.kv > *:last-child { border-bottom: none; }
.kv dt, .kv dd { margin: 0; }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; margin: 0 0 10px; }
.tbl th, .tbl td { text-align: left; padding: 11px 14px; border: 1px solid var(--line); color: var(--ink2); }
.tbl th { background: var(--bg3); color: var(--ink); font-weight: 600; }
.tbl__cap { font-size: 13px; color: var(--ink3); margin: 0 0 20px; }
.fig { margin: 0 0 22px; text-align: center; }
.fig img { width: 100%; height: auto; max-width: 300px; margin: 0 auto; border-radius: 20px; box-shadow: var(--sh); }
.fig__cap { font-size: 13px; color: var(--ink3); margin: 12px 0 0; }

/* ── 页脚 ─────────────────────────────────────────────────────────── */
.foot { background: #101216; border-top: 1px solid var(--line); padding: 48px 0 30px; }
.foot__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.foot__col p { color: var(--ink3); font-size: 14px; }
.foot__h { color: var(--ink); font-size: 15px; font-weight: 600; margin-bottom: 12px; }
.foot__brand img { width: 42px; height: 42px; border-radius: 12px; margin-bottom: 12px; }
.foot__li { list-style: none; padding: 0; margin: 0; }
.foot__li li { margin: 7px 0; }
.foot__li a { color: var(--ink3); font-size: 14px; }
.foot__li a:hover { color: var(--pri-l); }
.foot__note {
  margin: 34px 0 10px; padding-top: 20px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink3);
}
.foot__cr { font-size: 13px; color: var(--ink3); margin: 0; }

/* ── 断点 ─────────────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero h1 { font-size: 34px; }
  .hero::after { width: 100%; opacity: .24; }
  .hero__in { grid-template-columns: minmax(0, 1fr); gap: 32px; padding: 48px 22px 54px; }
  .hero__shot { order: 2; }
  .caps, .quotes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts__in { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-child(odd) { border-left: none; }
  .fact:nth-child(n+3) { border-top: 1px solid var(--line); }
  .foot__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .wrap, .top__in, .hero__in, .facts { padding-left: 16px; padding-right: 16px; }
  .rail { padding: 0 16px; }
  .rail::before { left: 16px; }
  .rail::after { right: 16px; }
  .hero h1 { font-size: 28px; }
  .lead { font-size: 16px; }
  .sec { padding: 46px 0; }
  .sec__h { font-size: 23px; }
  .page-hero h1 { font-size: 26px; }
  .anchors { top: 68px; }
  .brand__name { font-size: 17px; }
  .burger { display: block; }
  .nav {
    display: none;
    position: absolute; left: 16px; right: 16px; top: calc(100% + 8px);
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: var(--card); border: 1px solid var(--line2); border-radius: 14px;
    padding: 12px 18px; box-shadow: var(--sh);
  }
  .nav a { font-size: 15px; padding: 7px 0; border-bottom: none; width: 100%; }
  .burger[aria-expanded="true"] ~ .nav { display: flex; }
  .caps, .quotes, .shots, .xentry, .foot__grid { grid-template-columns: minmax(0, 1fr); }
  .facts__in { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-band { padding: 46px 0; }
  .cta-band__h { font-size: 22px; }
  .blk { padding-left: 16px; }
  .blk__h { font-size: 20px; }
  .tbl { font-size: 14px; }
  .tbl th, .tbl td { padding: 9px 10px; }
}