/* ==========================================================================
   梯度 · 中小企业资质对比 — design system
   文字以黑/深灰为主；蓝色只用于交互态与关键数值；橙色只用于新规与易错标记
   ========================================================================== */

:root{
  color-scheme: light;

  --bg:            oklch(1 0 0);
  --surface:       oklch(0.978 0.003 265);
  --surface-2:     oklch(0.956 0.004 265);
  --line:          oklch(0.921 0.005 265);
  --line-2:        oklch(0.868 0.007 265);

  --ink-1:         oklch(0.195 0.008 265);
  --ink-2:         oklch(0.330 0.010 265);
  --ink-3:         oklch(0.500 0.012 265);

  --brand:         oklch(0.500 0.190 264);
  --brand-ink:     oklch(0.440 0.180 264);
  --brand-hover:   oklch(0.420 0.190 264);
  --brand-soft:    oklch(0.962 0.022 264);

  --accent:        oklch(0.520 0.145 48);
  --accent-soft:   oklch(0.972 0.024 62);
  --accent-line:   oklch(0.880 0.055 62);

  --panel-bg:      oklch(0.168 0.008 265);
  --panel-line:    rgba(255,255,255,.10);

  --nav-bg:        rgba(255,255,255,.72);
  --shadow-1:      0 1px 2px rgb(16 24 40 / .04);

  --ease:          cubic-bezier(.22,1,.36,1);
  --dur:           .32s;

  --nav-h:         72px;
  --nav-h-stuck:   60px;
  --wrap:          1240px;
  --gutter:        clamp(20px, 5vw, 56px);

  --z-progress: 70;
  --z-nav:      60;
  --z-totop:    50;
  --z-modal:    100;
}

[data-theme="dark"]{
  color-scheme: dark;

  --bg:            oklch(0.165 0.008 265);
  --surface:       oklch(0.205 0.008 265);
  --surface-2:     oklch(0.240 0.009 265);
  --line:          oklch(0.295 0.010 265);
  --line-2:        oklch(0.375 0.012 265);

  --ink-1:         oklch(0.960 0.004 265);
  --ink-2:         oklch(0.865 0.006 265);
  --ink-3:         oklch(0.730 0.008 265);

  --brand:         oklch(0.760 0.130 264);
  --brand-ink:     oklch(0.800 0.115 264);
  --brand-hover:   oklch(0.840 0.100 264);
  --brand-soft:    oklch(0.300 0.055 264);

  --accent:        oklch(0.790 0.125 62);
  --accent-soft:   oklch(0.300 0.045 58);
  --accent-line:   oklch(0.420 0.070 58);

  --panel-bg:      oklch(0.213 0.010 265);
  --panel-line:    rgba(255,255,255,.10);

  --nav-bg:        rgba(15,17,21,.74);
  --shadow-1:      0 1px 2px rgb(0 0 0 / .3);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--bg);color:var(--ink-2);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer;padding:0}
a{color:inherit;text-decoration:none}
img,svg{display:block}
summary{cursor:pointer}
::selection{background:var(--brand-soft);color:var(--brand-ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ---------- utilities ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:var(--gutter);top:8px;z-index:var(--z-modal);
  padding:10px 16px;border-radius:8px;background:var(--ink-1);color:var(--bg);
  font-size:14px;transform:translateY(-160%);transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* text color roles */
.t-ink{color:var(--ink-1)}
.t-mute{color:var(--ink-3)}
.t-brand{color:var(--brand-ink)}
.t-accent{color:var(--accent)}
b,strong{font-weight:600;color:var(--ink-1)}

/* chips */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 8px;border-radius:6px;
  font-size:11.5px;font-weight:500;line-height:1;letter-spacing:.02em;
  background:var(--surface-2);color:var(--ink-2);white-space:nowrap;
}
.chip .dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex:none}
.chip--brand{background:var(--brand-soft);color:var(--brand-ink)}
.chip--accent{background:var(--accent-soft);color:var(--accent)}
.chip--outline{background:transparent;box-shadow:inset 0 0 0 1px var(--line-2);color:var(--ink-3)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:8px;
  font-size:14.5px;font-weight:500;letter-spacing:.01em;white-space:nowrap;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn--primary{background:var(--ink-1);color:var(--bg)}
.btn--primary:hover{background:oklch(0.28 0.05 264);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{box-shadow:inset 0 0 0 1px var(--line-2);color:var(--ink-1)}
.btn--ghost:hover{box-shadow:inset 0 0 0 1px var(--ink-3);transform:translateY(-1px)}
.btn--quiet{color:var(--ink-1);padding-inline:2px;gap:10px;height:auto}
.btn--quiet:hover{color:var(--brand-ink)}
.btn svg{width:15px;height:15px}
.btn .arrow{transition:transform var(--dur) var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- progress ---------- */
.progress{position:fixed;inset:0 0 auto;height:2px;z-index:var(--z-progress);background:transparent;pointer-events:none}
.progress span{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:var(--brand);transition:transform .1s linear}

/* ---------- nav ---------- */
.site-nav{
  position:sticky;top:0;z-index:var(--z-nav);
  display:flex;align-items:center;height:var(--nav-h);
  background:transparent;border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
@supports (backdrop-filter: blur(4px)){
  .site-nav.is-stuck{
    background:var(--nav-bg);
    -webkit-backdrop-filter:saturate(180%) blur(16px);
    backdrop-filter:saturate(180%) blur(16px);
    border-bottom-color:var(--line);box-shadow:var(--shadow-1);
  }
}
.site-nav.is-stuck{height:var(--nav-h-stuck)}
@supports not (backdrop-filter: blur(4px)){
  .site-nav.is-stuck{background:var(--bg);border-bottom-color:var(--line)}
}
.nav-inner{display:flex;align-items:center;gap:clamp(12px,2vw,26px);width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}

.brand{display:flex;align-items:center;gap:9px;flex:none;padding-block:6px}
.brand__mark{width:20px;height:20px;color:var(--ink-1);flex:none}
.brand__mark rect{fill:currentColor}
.brand__name{font-size:16px;font-weight:600;letter-spacing:.06em;color:var(--ink-1)}
.brand__div{width:1px;height:13px;background:var(--line-2);flex:none}
.brand__sub{font-size:12px;color:var(--ink-3);letter-spacing:.02em;white-space:nowrap}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:34px;padding:0 11px;border-radius:7px;
  font-size:14px;color:var(--ink-2);white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:var(--ink-1);background:var(--surface)}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:50% 50%;transition:transform var(--dur) var(--ease);
}
.nav-link:hover::after{transform:scaleX(.55)}
.nav-link[aria-current="page"]{color:var(--ink-1);font-weight:500}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:4px;flex:none;margin-left:4px}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:34px;min-width:34px;padding:0 8px;border-radius:7px;color:var(--ink-2);font-size:13px;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--ink-1);background:var(--surface)}
.icon-btn svg{width:17px;height:17px;flex:none}
.search-btn .kbd{
  display:inline-flex;align-items:center;height:19px;padding:0 5px;border-radius:4px;
  border:1px solid var(--line);background:var(--bg);font-size:11px;color:var(--ink-3);letter-spacing:.02em;
}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
.nav-burger{display:none}

.drawer{
  position:fixed;inset:0;z-index:var(--z-modal);display:none;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter:blur(28px) saturate(150%);backdrop-filter:blur(28px) saturate(150%);
}
[data-theme="dark"] .drawer{background:color-mix(in srgb, var(--bg) 90%, transparent)}
.drawer.is-open{display:flex;flex-direction:column;animation:drawer-in .28s var(--ease)}
@keyframes drawer-in{from{opacity:0}to{opacity:1}}
.drawer__top{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);padding-inline:var(--gutter)}
.drawer__list{padding:16px var(--gutter) 40px;display:flex;flex-direction:column}
.drawer__list a{
  display:flex;align-items:center;justify-content:space-between;min-height:52px;
  font-size:17px;color:var(--ink-1);border-bottom:1px solid var(--line);
}
.drawer__list a[aria-current="page"]{color:var(--brand-ink)}
.drawer__list a span{font-size:12px;color:var(--ink-3)}

/* ---------- hero ---------- */
.hero{padding-block:clamp(36px,5.4vw,76px) clamp(44px,5.4vw,72px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);gap:clamp(32px,4.4vw,72px);align-items:center}
.hero-copy{max-width:640px}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px 5px 10px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  font-size:12.5px;color:var(--ink-2);letter-spacing:.01em;
}
.hero-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.hero h1{
  margin-top:22px;font-size:clamp(2rem,3.55vw,3.5rem);
  line-height:1.14;font-weight:650;letter-spacing:-.022em;color:var(--ink-1);
}
.hero h1 .ln{display:block;white-space:nowrap}
.hero-sub{margin-top:20px;font-size:clamp(15px,1.1vw,16px);line-height:1.8;color:var(--ink-2);max-width:48ch;text-wrap:pretty}
.hero-actions{display:flex;align-items:center;gap:22px;margin-top:30px;flex-wrap:wrap}

/* ---------- hero panel：要点卡片轮播 ---------- */
.hero-panel{
  position:relative;border-radius:16px;background:var(--panel-bg);color:#fff;
  padding:clamp(20px,2.2vw,30px);display:flex;flex-direction:column;
  aspect-ratio:1/1;min-height:380px;box-shadow:inset 0 0 0 1px var(--panel-line);overflow:hidden;
}
/* 悬停高亮：只在卡片边缘一圈白色描边 + 极淡内发光，正文区域不受影响 */
.hero-panel::after{
  content:"";position:absolute;inset:0;z-index:3;pointer-events:none;
  border-radius:inherit;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.52),
             inset 0 0 26px rgba(255,255,255,.055);
  opacity:0;transition:opacity .35s var(--ease);
}
@media (hover:hover){
  .hero-panel:hover::after{opacity:1}
}

.hcards{position:relative;flex:1;min-height:0;display:flex;flex-direction:column;--hc-dur:5200ms}
.hcards__stage{position:relative;flex:1;min-height:0}
.hcards__foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:16px;flex:none}
.hcards__ctrl{display:flex;align-items:center;gap:10px}

/* ---- 单张卡片 ---- */
.hcard{
  position:absolute;inset:0;display:flex;flex-direction:column;isolation:isolate;
  opacity:0;visibility:hidden;transform:translateY(10px) scale(.985);
  transition:opacity .55s var(--ease),transform .55s var(--ease),visibility 0s linear .55s;
}
.hcard.is-active{
  opacity:1;visibility:visible;transform:none;
  transition:opacity .55s var(--ease),transform .55s var(--ease),visibility 0s;
}
.hcard::before{
  content:"";position:absolute;left:-14%;right:-14%;top:-12%;height:76%;z-index:-1;pointer-events:none;
  background:radial-gradient(58% 58% at 50% 12%,var(--hc-glow),transparent 72%);
  opacity:0;transition:opacity .7s var(--ease);
}
.hcard.is-active::before{opacity:1}
.hcard[data-tone="a"]{--hc-glow:rgba(104,138,255,.24)}
.hcard[data-tone="b"]{--hc-glow:rgba(64,186,208,.19)}
.hcard[data-tone="c"]{--hc-glow:rgba(152,118,255,.21)}
.hcard[data-tone="d"]{--hc-glow:rgba(255,152,74,.17)}

.hcard__head{flex:none}
.hcard__kicker{font-size:10.5px;line-height:1;letter-spacing:.18em;color:rgba(255,255,255,.42)}
.hcard__title{margin-top:10px;font-size:clamp(1.05rem,1.45vw,1.28rem);font-weight:600;line-height:1.3;letter-spacing:-.015em;color:#fff}
.hcard__body{flex:1;min-height:0;margin-top:clamp(14px,1.7vw,22px);display:flex;flex-direction:column}
.hcard__note{flex:none;margin-top:12px;margin-bottom:14px;font-size:11px;line-height:1.5;color:rgba(255,255,255,.40)}

/* ---- 卡片一：三层台阶 ---- */
.ladder{display:flex;flex-direction:column;gap:10px;height:100%;min-height:0}
.ladder__row{
  position:relative;flex:1;width:var(--w);min-height:62px;padding:11px 14px 11px 17px;
  display:flex;flex-direction:column;justify-content:center;gap:4px;
  border-radius:12px;overflow:hidden;
  background:linear-gradient(100deg,rgba(255,255,255,.10),rgba(255,255,255,.025));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
  transition:box-shadow .25s var(--ease);
}
.ladder__row::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;
  border-radius:0 2px 2px 0;background:rgba(255,255,255,.32);
}
.ladder__row--hi{
  background:linear-gradient(100deg,rgba(255,255,255,.17),rgba(255,255,255,.04));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.13);
}
.ladder__row--hi::before{background:rgba(255,255,255,.72);box-shadow:0 0 12px rgba(255,255,255,.28)}
.ladder__tag{font-size:10.5px;line-height:1;letter-spacing:.14em;color:rgba(255,255,255,.46)}
.ladder__name{font-size:14px;font-weight:500;line-height:1.35;color:rgba(255,255,255,.94)}
.ladder__row--hi .ladder__name{color:#fff}

/* ---- 卡片二：培育规模 ---- */
.scale{display:flex;flex-direction:column;gap:10px;height:100%;min-height:0}
.scale__row{
  flex:1;min-height:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:11px 14px;align-content:center;
  padding:0 16px;border-radius:12px;
  background:linear-gradient(100deg,rgba(255,255,255,.085),rgba(255,255,255,.02));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.075);
  transition:box-shadow .25s var(--ease);
}
.scale__num{font-size:19px;font-weight:600;line-height:1;letter-spacing:-.02em;color:#fff;white-space:nowrap}
.scale__num small{font-size:.56em;font-weight:500;color:rgba(255,255,255,.5);margin-left:2px;letter-spacing:0}
.scale__label{font-size:12.5px;line-height:1.4;color:rgba(255,255,255,.72);align-self:center}
.scale__bar{grid-column:1/-1;height:6px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.scale__bar i{
  display:block;width:var(--w);height:100%;min-width:8px;border-radius:99px;
  transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,rgba(255,255,255,.9),rgba(255,255,255,.4));
}

/* ---- 卡片三：Ⅰ类知识产权 ---- */
.ipcols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;height:100%;min-height:0;align-items:stretch}
.ipcol{display:flex;flex-direction:column;align-items:center;gap:10px;height:100%;min-width:0;--bar:calc(var(--h) * .78)}
.ipcol__track{position:relative;flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center;min-height:0}
.ipcol__val{
  position:absolute;left:0;right:0;bottom:calc(var(--bar) + 10px);text-align:center;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:-.01em;color:#fff;
}
.ipcol__fill{
  width:min(36px,74%);height:var(--bar);border-radius:7px 7px 3px 3px;
  transform-origin:50% 100%;transform:scaleY(0);
  background:linear-gradient(180deg,rgba(255,255,255,.40),rgba(255,255,255,.09));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.13);
  transition:box-shadow .25s var(--ease);
}
.ipcol--hi .ipcol__fill{
  background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,255,255,.32));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.42),0 0 26px rgba(140,170,255,.34);
}
.ipcol__lab{flex:none;font-size:11px;line-height:1.3;text-align:center;color:rgba(255,255,255,.55)}
.ipcol--hi .ipcol__lab{color:rgba(255,255,255,.9)}

/* ---- 卡片四：2026 新标准 ---- */
.rule{display:flex;flex-direction:column;gap:11px;height:100%;min-height:0}
.rule__row{
  flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;
  align-content:center;gap:11px 16px;padding:0 18px;border-radius:14px;
  background:linear-gradient(100deg,rgba(255,255,255,.085),rgba(255,255,255,.02));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.075);
  transition:box-shadow .25s var(--ease);
}
.rule__row--hi{
  background:linear-gradient(100deg,rgba(255,255,255,.15),rgba(255,255,255,.035));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.13);
}
.rule__name{grid-column:1;grid-row:1;font-size:15px;font-weight:500;line-height:1.3;color:#fff}
.rule__gates{grid-column:1;grid-row:2;display:flex;align-items:center;gap:5px}
.rule__gates-label{font-size:10px;letter-spacing:.12em;color:rgba(255,255,255,.38);margin-right:2px}
.rule__gates i{display:block;width:12px;height:4px;border-radius:2px;background:rgba(255,255,255,.30)}
.rule__scorewrap{grid-column:2;grid-row:1/3;align-self:center;text-align:right}
.rule__scorelabel{font-size:10px;letter-spacing:.1em;color:rgba(255,255,255,.38);line-height:1}
.rule__score{margin-top:6px;font-size:clamp(1.6rem,2.6vw,2.15rem);font-weight:600;line-height:1;letter-spacing:-.025em;color:#fff;white-space:nowrap}
.rule__score span{font-size:.46em;font-weight:500;color:rgba(255,255,255,.5);margin-left:3px;letter-spacing:0}

/* ---- 卡片内小元素悬停：边缘发光 + 浮起投影（只改阴影，不动文字与背景） ---- */
@media (hover:hover){
  .ladder__row:hover,
  .scale__row:hover,
  .rule__row:hover{
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.26),
               0 0 0 1px rgba(255,255,255,.13),
               0 10px 24px rgba(0,0,0,.45);
  }
  .ipcol:hover .ipcol__fill{
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.58),
               0 0 0 1px rgba(255,255,255,.16),
               0 8px 20px rgba(0,0,0,.45),
               0 0 24px rgba(140,170,255,.42);
  }
}

/* ---- 轮播控制条 ---- */
.hcards__dots{display:flex;align-items:center;gap:4px}
.hcards__dot{width:26px;height:18px;display:grid;place-items:center}
.hcards__dot i{position:relative;display:block;width:100%;height:3px;border-radius:99px;background:rgba(255,255,255,.16);overflow:hidden}
.hcards__dot.is-on i{background:rgba(255,255,255,.24)}
.hcards__dot.is-on i::after{
  content:"";position:absolute;inset:0;border-radius:99px;background:#fff;
  transform-origin:0 50%;transform:scaleX(0);
}
.hcards__dot.is-on.is-running i::after{animation:hc-fill var(--hc-dur) linear forwards}
.hcards.is-paused .hcards__dot.is-on i::after{animation-play-state:paused}
.hcards__toggle{
  width:24px;height:24px;display:grid;place-items:center;border-radius:50%;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);color:rgba(255,255,255,.62);
  transition:color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.hcards__toggle:hover{color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.34)}
.hcards__ico{width:11px;height:11px;fill:currentColor}
.hcards__ico--play{display:none}
/* 图标只跟随「手动暂停」状态，悬停暂停时不翻成播放，避免误导 */
.hcards.is-user-paused .hcards__ico--pause{display:none}
.hcards.is-user-paused .hcards__ico--play{display:block}
.hcards__count{font-size:11px;line-height:1;letter-spacing:.08em;color:rgba(255,255,255,.32)}
.hcards__count .hcards__now{color:rgba(255,255,255,.72)}
.hcards__sep{margin:0 3px;opacity:.55}

/* ---- 入场动画（每次成为当前卡时重放） ---- */
.hcard__kicker,.hcard__title,.hcard__body,.hcard__note{opacity:0}
.hcard.is-active .hcard__kicker{animation:hc-in .5s var(--ease) .04s forwards}
.hcard.is-active .hcard__title{animation:hc-in .5s var(--ease) .10s forwards}
.hcard.is-active .hcard__body{animation:hc-in .55s var(--ease) .16s forwards}
.hcard.is-active .hcard__note{animation:hc-in .5s var(--ease) .26s forwards}
.ladder__row{opacity:0}
.hcard.is-active .ladder__row{animation:hc-slide-x .55s var(--ease) forwards;animation-delay:calc(var(--d,0) * 90ms + 180ms)}
.scale__bar i{transform:scaleX(0)}
.hcard.is-active .scale__bar i{animation:hc-grow-x .85s var(--ease) forwards;animation-delay:calc(var(--d,0) * 110ms + 200ms)}
.ipcol__fill{transform:scaleY(0)}
.hcard.is-active .ipcol__fill{animation:hc-grow-y .8s var(--ease) forwards;animation-delay:calc(var(--d,0) * 90ms + 220ms)}
.rule__gates i{opacity:0}
.hcard.is-active .rule__gates i{animation:hc-fade .45s var(--ease) forwards;animation-delay:calc(var(--d,0) * 45ms + 220ms)}

@keyframes hc-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes hc-slide-x{from{opacity:0;transform:translateX(-16px)}to{opacity:1;transform:none}}
@keyframes hc-grow-x{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes hc-grow-y{from{transform:scaleY(0)}to{transform:scaleY(1)}}
@keyframes hc-fade{from{opacity:0}to{opacity:1}}
@keyframes hc-fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* 降低动效偏好下不自动轮播，暂停按钮随之隐藏 */
@media (prefers-reduced-motion: reduce){
  .hcards__toggle{display:none}
}
@media (max-width:560px){
  .hcards__foot{margin-top:10px}
  .hcard__body{margin-top:10px}
  .hcard__title{font-size:1.05rem}
  .hcard__note{margin-top:8px;font-size:10.5px}
  .ladder{gap:8px}
  .ladder__row{min-height:48px;padding:8px 11px 8px 14px}
  .ladder__name{font-size:13px}
  .scale{gap:8px}
  .scale__row{padding:0 13px;gap:8px 12px}
  .scale__num{font-size:17px}
  .scale__label{font-size:11.5px}
  .ipcol__val{font-size:13.5px}
  .ipcol__lab{font-size:10px}
  .ipcol__fill{width:min(26px,66%)}
  .rule{gap:9px}
  .rule__row{padding:0 13px;gap:8px 12px}
  .rule__name{font-size:13.5px}
  .rule__gates i{width:9px}
  .rule__score{font-size:1.7rem}
}


/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:clamp(30px,4vw,52px);border-top:1px solid var(--line);padding-top:28px}
.stat{padding-right:clamp(14px,3vw,40px)}
.stat + .stat{border-left:1px solid var(--line);padding-left:clamp(14px,3vw,40px)}
.stat__num{font-size:clamp(1.55rem,2.3vw,2.05rem);line-height:1.25;font-weight:600;letter-spacing:-.02em;color:var(--ink-1)}
.stat__num small{font-size:.6em;font-weight:500;color:var(--ink-3);margin-left:3px;letter-spacing:0}
.stat__label{margin-top:6px;font-size:.8125rem;color:var(--ink-3);line-height:1.5}
.stats__note{margin-top:12px;font-size:.75rem;color:var(--ink-3)}

/* ---------- sections ---------- */
.section{padding-block:clamp(52px,6.4vw,88px);border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:clamp(26px,3.2vw,40px)}
.section-head__text{max-width:62ch}
.section-title{font-size:clamp(1.4rem,2vw,1.75rem);line-height:1.32;font-weight:650;letter-spacing:-.02em;color:var(--ink-1);text-wrap:balance}
.section-desc{margin-top:11px;font-size:.9375rem;line-height:1.75;color:var(--ink-3);text-wrap:pretty}
.section-link{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--ink-2);
  padding-bottom:2px;border-bottom:1px solid transparent;white-space:nowrap;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.section-link:hover{color:var(--ink-1);border-bottom-color:var(--line-2)}
.section-link svg{width:14px;height:14px}

/* ---------- qualification cards ---------- */
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card{
  position:relative;display:flex;flex-direction:column;padding:20px 20px 18px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.card__top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:18px}
.card__idx{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.card__title{font-size:1.0625rem;font-weight:600;letter-spacing:-.01em;color:var(--ink-1);line-height:1.4}
.card__title a::after{content:"";position:absolute;inset:0;border-radius:12px}
.card__role{margin-top:8px;font-size:.8125rem;line-height:1.65;color:var(--ink-3);min-height:2.6em}
.card__specs{margin-top:auto;padding-top:16px}
.card__spec{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding:7px 0;border-top:1px solid var(--line)}
.card__spec dt{font-size:.75rem;color:var(--ink-3);flex:none}
.card__spec dd{font-size:.8125rem;color:var(--ink-1);font-weight:500;text-align:right;line-height:1.45}
.card__foot{display:flex;align-items:center;gap:6px;margin-top:14px;font-size:.78125rem;color:var(--ink-3);transition:color var(--dur) var(--ease)}
.card:hover .card__foot{color:var(--ink-1)}
.card__foot svg{width:13px;height:13px;transition:transform var(--dur) var(--ease)}
.card:hover .card__foot svg{transform:translateX(2px)}

/* key numeric value: the only place blue touches body copy */
.k{color:var(--brand-ink);font-weight:600}
.k--accent{color:var(--accent)}

/* ---------- differences ---------- */
.diffs{border-top:1px solid var(--line)}
.diff{display:grid;grid-template-columns:44px minmax(0,1fr);gap:clamp(10px,2vw,24px);padding-block:24px;border-bottom:1px solid var(--line)}
.diff__num{font-size:12.5px;color:var(--ink-3);letter-spacing:.06em;padding-top:5px}
.diff h3{font-size:1.0625rem;line-height:1.55;font-weight:600;color:var(--ink-1);letter-spacing:-.008em;text-wrap:pretty}
.diff p{margin-top:8px;font-size:.9375rem;line-height:1.8;color:var(--ink-2);max-width:74ch}
.diff__more{margin-top:9px}
.diff__more summary{
  display:inline-flex;align-items:center;gap:7px;list-style:none;
  font-size:.8125rem;color:var(--ink-3);transition:color var(--dur) var(--ease);
}
.diff__more summary:hover{color:var(--ink-1)}
.diff__more summary::-webkit-details-marker{display:none}
.diff__more summary::before{
  content:"";width:6px;height:6px;border-right:1.4px solid currentColor;border-bottom:1.4px solid currentColor;
  transform:rotate(45deg) translateY(-1px);transition:transform .25s var(--ease);flex:none;
}
.diff__more[open] summary::before{transform:rotate(-135deg) translateY(-1px)}
.diff__more .more-body{margin-top:10px;padding:14px 16px;border-radius:8px;background:var(--surface);font-size:.875rem;line-height:1.8;color:var(--ink-2);max-width:74ch}

/* ---------- faq ---------- */
.faq{max-width:900px}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding-block:18px;
  list-style:none;font-size:1rem;font-weight:500;line-height:1.65;color:var(--ink-1);
  transition:color var(--dur) var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-ink)}
.faq summary::after{
  content:"";flex:none;width:7px;height:7px;margin-top:10px;
  border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .28s var(--ease),border-color var(--dur);
}
.faq details[open] summary::after{transform:rotate(-135deg);border-color:var(--brand)}
.faq__body{padding:0 36px 22px 0;font-size:.9375rem;line-height:1.85;color:var(--ink-2);max-width:76ch}

/* ---------- page head (inner pages) ---------- */
.page-head{padding-block:clamp(32px,4.4vw,56px) clamp(24px,3vw,36px)}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:18px}
.crumb a{transition:color var(--dur) var(--ease)}
.crumb a:hover{color:var(--ink-1)}
.crumb .sep{opacity:.45}
.page-head h1{font-size:clamp(1.85rem,3vw,2.6rem);line-height:1.2;font-weight:650;letter-spacing:-.026em;color:var(--ink-1);text-wrap:balance}
.page-lead{margin-top:16px;font-size:1rem;line-height:1.8;color:var(--ink-2);max-width:62ch;text-wrap:pretty}
.page-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:20px}

/* legend */
.legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.legend__item{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3)}
.legend__swatch{width:18px;height:8px;border-radius:3px;flex:none;box-shadow:inset 0 0 0 1px var(--line-2)}

/* ---------- layout with toc ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(32px,4vw,64px)}
@media (min-width:1180px){
  .layout--toc{grid-template-columns:minmax(0,1fr) 208px}
}
.toc{display:none}
@media (min-width:1180px){
  /* 关键：sticky 必须挂在这一层。上级 .page-rail__side 与内容等高，
     元素才能在整页范围内跟随滚动，而不是被 91px 的自身体高锁死 */
  .toc{
    display:block;
    position:sticky;
    top:calc(var(--nav-h-stuck) + 30px);
    align-self:start;
    max-height:calc(100vh - var(--nav-h-stuck) - 60px);
    overflow-y:auto;
    overscroll-behavior:contain;
    scrollbar-width:thin;
  }
  .toc__inner{border-left:1px solid var(--line);padding-left:16px}
  .toc__title{
    font-size:11px;letter-spacing:.1em;color:var(--ink-3);
    margin-bottom:10px;text-transform:none;
  }
  .toc a{
    display:block;position:relative;padding:6px 0;font-size:13px;color:var(--ink-3);
    line-height:1.45;
    transition:color .22s var(--ease), font-size .22s var(--ease), font-weight .22s var(--ease), letter-spacing .22s var(--ease);
  }
  .toc a:hover{color:var(--ink-1)}
  /* 当前小节：蓝色 + 略微放大 + 字重加重 */
  .toc a.is-active{
    color:var(--brand);
    font-weight:600;
    font-size:14px;
    letter-spacing:-.005em;
  }
  .toc a.is-active::before{
    content:"";position:absolute;left:-17px;top:50%;width:2px;height:16px;margin-top:-8px;
    border-radius:2px;background:var(--brand);
  }
}

/* 长页面的右侧定位栏：内容列 + 目录列 */
.page-rail{
  display:grid;grid-template-columns:minmax(0,1fr);
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);
}
.page-rail__main{min-width:0}
.page-rail__main .wrap{max-width:none;padding-inline:0}
.page-rail__main .page-head{padding-top:0;padding-bottom:clamp(18px,2.2vw,28px)}
.page-rail__main > .section:first-child,
.page-rail__main > .page-head + .section{border-top:0;padding-top:clamp(20px,2.6vw,34px)}
.page-rail__side{display:none}

/* 带 rail 时，对比表占满可用宽度即可，不再横向滚动 */
.page-rail .tbl--compare{min-width:900px}
.page-rail .tbl--compare th,
.page-rail .tbl--compare td{padding:13px 12px}
.page-rail .tbl--compare th[scope="row"]{min-width:126px;max-width:150px}
.page-rail .tbl--compare thead th:nth-child(2),
.page-rail .tbl--compare thead th:nth-child(3){min-width:0}
.page-rail .tbl--compare thead th:nth-child(4),
.page-rail .tbl--compare thead th:nth-child(5){min-width:0}
@media (min-width:1180px){
  .page-rail{
    grid-template-columns:minmax(0,1fr) 172px;
    column-gap:clamp(22px,2.6vw,40px);
    align-items:start;
  }
  /* 侧栏撑满整行高度，让 sticky 的参照系等于整页正文高度 */
  .page-rail__side{display:block;align-self:stretch}
}

/* ---------- tables ---------- */
/* 横向滚动容器只在表格放不下时启用；放得下时取消 overflow，
   否则 overflow 会创建滚动容器，thead 的 position:sticky 将无法相对视口生效 */
.tbl-wrap{overflow-x:auto;overscroll-behavior-x:contain;position:relative;-webkit-overflow-scrolling:touch}
.scroll-hint{container-type:inline-size}
@container (min-width:940px){
  .tbl-wrap{overflow:visible}
}
/* 窄屏需要横向滚动时会形成滚动容器，此时表头只能相对容器固定。
   不给容器设 max-height，避免出现嵌套滚动的陷阱。 */
.tbl-wrap::after{
  content:"";position:sticky;right:0;top:0;float:right;width:24px;height:100%;pointer-events:none;
}
.tbl{width:100%;min-width:940px;border-collapse:separate;border-spacing:0;font-size:.875rem;line-height:1.65}
.tbl--fit{min-width:0}
.tbl--fit th,.tbl--fit td{padding:11px 12px}
.tbl--fit tbody th{width:58%}
.tbl caption{text-align:left;font-size:.78125rem;color:var(--ink-3);padding-bottom:10px}
.tbl th,.tbl td{padding:13px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.tbl--compare thead th:nth-child(2),.tbl--compare thead th:nth-child(3){min-width:150px}
.tbl--compare thead th:nth-child(4),.tbl--compare thead th:nth-child(5){min-width:178px}
.tbl thead th{
  font-size:12.5px;font-weight:600;color:var(--ink-1);letter-spacing:.01em;
  background:var(--surface);border-bottom:1px solid var(--line-2);
}
.tbl thead th small{display:block;font-weight:400;font-size:11px;color:var(--ink-3);margin-top:4px;letter-spacing:0}
.tbl tbody th{font-weight:500;color:var(--ink-2);font-size:.8125rem}
.tbl td{color:var(--ink-2)}
.tbl--compare th[scope="row"]{
  position:sticky;left:0;z-index:2;background:var(--bg);min-width:150px;max-width:190px;
  box-shadow:1px 0 0 var(--line);
}
.tbl--compare thead th:first-child{
  position:sticky;left:0;z-index:3;background:var(--surface);box-shadow:1px 0 0 var(--line-2);
}
/* 其它同构的五列对比表（知识产权要求、管理要点）没有 tbl--compare 结构，
   用 tbl--pin 复用同一套「横向滚动时首列吸附」的行为：
   窄屏右滑看后面几列时，左边的「对比项目」列始终留在原位 */
.tbl--pin th[scope="row"]{
  position:sticky;left:0;z-index:2;background:var(--bg);min-width:150px;max-width:190px;
  box-shadow:1px 0 0 var(--line);
}
.tbl--pin thead th:first-child{
  position:sticky;left:0;z-index:3;background:var(--surface);box-shadow:1px 0 0 var(--line-2);
}

.tbl .group th{
  background:var(--surface-2);font-size:11.5px;letter-spacing:.06em;color:var(--ink-3);
  font-weight:500;padding:9px 16px;position:sticky;left:0;
}
.tbl tbody tr:hover td,.tbl tbody tr:hover th[scope="row"]{background:var(--surface)}
.tbl tbody tr:hover th[scope="row"]{background:var(--surface)}
.tbl .cell-note{display:block;margin-top:4px;font-size:11.5px;color:var(--ink-3)}
.tbl .na{color:var(--ink-3)}

/* fade hints on scrollable table */
.scroll-hint{position:relative}
.scroll-hint::before,.scroll-hint::after{
  content:"";position:absolute;top:0;bottom:0;width:22px;pointer-events:none;z-index:4;opacity:0;transition:opacity .25s;
}
.scroll-hint::before{left:0;background:linear-gradient(to right,var(--bg),transparent)}
.scroll-hint::after{right:0;background:linear-gradient(to left,var(--bg),transparent)}
.scroll-hint[data-left="1"]::before{opacity:1}
.scroll-hint[data-right="1"]::after{opacity:1}

/* ---------- segmented ---------- */
.segmented{display:inline-flex;gap:2px;padding:3px;border-radius:9px;background:var(--surface-2);flex-wrap:wrap}
.segmented label{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:7px;
  font-size:13px;color:var(--ink-3);cursor:pointer;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.segmented input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;clip:rect(0 0 0 0);clip-path:inset(50%);border:0;padding:0;margin:-1px;overflow:hidden}
.segmented label:hover{color:var(--ink-1)}
.segmented input:checked + span{color:var(--ink-1);font-weight:500}
.segmented label:has(input:checked){background:var(--bg);box-shadow:var(--shadow-1),0 0 0 1px var(--line)}
.segmented label:has(input:focus-visible){outline:2px solid var(--brand);outline-offset:2px}
.seg-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}

/* group jump chips */
.jumps{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.jumps__label{font-size:12px;color:var(--ink-3);margin-right:2px}
.jump{
  display:inline-flex;align-items:center;height:30px;padding:0 11px;border-radius:7px;
  font-size:12.5px;color:var(--ink-2);box-shadow:inset 0 0 0 1px var(--line);background:var(--bg);
  transition:box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.jump:hover{color:var(--ink-1);box-shadow:inset 0 0 0 1px var(--line-2);background:var(--surface)}
.tbl tr.group{scroll-margin-top:calc(var(--nav-h-stuck) + 84px)}

/* ---------- 窄屏：对比表吸顶列提示 ---------- */
/* 窄屏表格必须横向滚动，overflow 会破坏 thead 的视口级 sticky，
   因此改为在表格滚入视口时，用一条吸顶条提示当前可见的列 */
.colbar{
  display:none;
  position:sticky;top:var(--nav-h-stuck);z-index:9;
  background:var(--nav-bg);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  margin-inline:calc(var(--gutter) * -1);
  padding-inline:var(--gutter);
}
.colbar.is-on{display:block}
.colbar__inner{
  display:flex;align-items:center;gap:14px;height:38px;
  font-size:12px;color:var(--ink-3);overflow-x:auto;scrollbar-width:none;
}
.colbar__inner::-webkit-scrollbar{display:none}
.colbar__inner span{white-space:nowrap}
.colbar__inner b{font-weight:600;color:var(--ink-1)}

/* ---------- 对比表：表头固定 ---------- */
/* 向下滚动时表头吸附在导航下方，随时能确认四列分别是哪一类资质 */
.tbl--compare thead th{
  position:sticky;
  top:var(--nav-h-stuck);
  z-index:6;
  background:var(--surface);
  box-shadow:inset 0 -1px 0 var(--line-2);
}
/* 左上角单元格同时需要横向吸附，层级要压过其它列 */
.tbl--compare thead th:first-child{z-index:8;background:var(--surface)}
/* 吸附后与导航之间加一道极淡投影，避免两块白贴在一起 */
.tbl--compare.is-stuck-head thead th{
  box-shadow:inset 0 -1px 0 var(--line-2), 0 8px 14px -12px rgb(16 24 40 / .34);
}
[data-theme="dark"] .tbl--compare.is-stuck-head thead th{
  box-shadow:inset 0 -1px 0 var(--line-2), 0 8px 14px -10px rgb(0 0 0 / .5);
}

/* ---------- bar list (指标阶梯) ---------- */
.barlist{display:flex;flex-direction:column;gap:26px}
.barlow__label{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:9px}
.barlow__label h3{font-size:.9375rem;font-weight:600;color:var(--ink-1);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.barlow > .tbl-wrap > .tbl--fit{max-width:620px}
.barlow__label span{font-size:12px;color:var(--ink-3)}
.bar{display:grid;grid-template-columns:112px minmax(0,1fr) 140px;align-items:center;gap:12px;padding-block:4px}
.bar__name{font-size:12.5px;color:var(--ink-3);text-align:right}
.bar__track{display:block;height:8px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.bar__fill{display:block;height:100%;border-radius:4px;background:var(--ink-1);min-width:2px}
.bar__fill--muted{background:var(--line-2)}
.bar__fill--brand{background:var(--brand)}
.bar__val{font-size:12.5px;color:var(--ink-2);font-variant-numeric:tabular-nums}

/* mini score bar inside tables */
.minibar{display:inline-flex;align-items:center;gap:9px}
.minibar__v{min-width:1.7em;font-variant-numeric:tabular-nums;color:var(--ink-1)}
.minibar__track{display:inline-block;width:64px;height:5px;border-radius:3px;background:var(--surface-2);overflow:hidden}
.minibar__fill{display:block;height:100%;border-radius:3px;background:var(--ink-1);min-width:2px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0;margin-top:8px}
.step{position:relative;padding-right:14px}
.step::before{
  content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line);
}
.step:last-child::before{right:auto;width:0}
.step__dot{position:relative;width:18px;height:18px;border-radius:50%;background:var(--bg);box-shadow:inset 0 0 0 1px var(--line-2);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step__dot::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-3)}
.step__t{font-size:.875rem;font-weight:500;color:var(--ink-1);line-height:1.5}
.step__d{margin-top:5px;font-size:12px;color:var(--ink-3);line-height:1.6;padding-right:8px}

/* ---------- timeline ---------- */
.tl{position:relative;padding-left:26px;margin-top:6px}
.tl::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--line)}
.tl__item{position:relative;padding-bottom:24px}
.tl__item:last-child{padding-bottom:0}
.tl__item::before{content:"";position:absolute;left:-24px;top:7px;width:7px;height:7px;border-radius:50%;background:var(--bg);box-shadow:inset 0 0 0 1.5px var(--line-2)}
.tl__item.is-warn::before{box-shadow:inset 0 0 0 1.5px var(--accent);background:var(--accent)}
.tl__t{font-size:.9375rem;font-weight:500;color:var(--ink-1);line-height:1.55}
.tl__t time{font-variant-numeric:tabular-nums;color:var(--ink-1)}
.tl__d{margin-top:4px;font-size:.875rem;line-height:1.75;color:var(--ink-2);max-width:70ch}

/* ---------- callout ---------- */
.callout{
  display:flex;gap:12px;padding:16px 18px;border-radius:10px;background:var(--accent-soft);
  font-size:.875rem;line-height:1.75;color:var(--ink-2);
}
.callout__mark{flex:none;width:14px;height:14px;margin-top:5px;color:var(--accent)}
.callout strong{color:var(--ink-1)}
.callout--plain{background:var(--surface)}

/* ---------- checklist ---------- */
.check{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.check__item{display:grid;grid-template-columns:20px minmax(0,1fr) auto;gap:12px;align-items:start;padding:12px 0;border-bottom:1px solid var(--line)}
.check__mark{
  width:15px;height:15px;margin-top:5px;border-radius:4px;box-shadow:inset 0 0 0 1.4px var(--line-2);
  display:flex;align-items:center;justify-content:center;color:transparent;
}
.check__mark svg{width:10px;height:10px}
.check__item.is-must .check__mark{box-shadow:inset 0 0 0 1.4px var(--ink-1);color:var(--bg);background:var(--ink-1)}
.check__item p{font-size:.9375rem;line-height:1.7;color:var(--ink-2)}
.check__item p b{color:var(--ink-1)}
.check__tag{font-size:11.5px;color:var(--ink-3);white-space:nowrap;padding-top:3px}
.note-line{display:block;margin-top:4px;font-size:.8125rem;line-height:1.6;color:var(--ink-3)}

/* ---------- tabs ---------- */
.tabpanel{display:none}
.tabpanel.is-on{display:block;animation:fade .28s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

/* ---------- prose blocks ---------- */
.stack{display:flex;flex-direction:column}
.stack > * + *{margin-top:var(--stack-gap,28px)}
.h3{font-size:1.125rem;font-weight:600;line-height:1.5;color:var(--ink-1);letter-spacing:-.01em}
.h4{font-size:.9375rem;font-weight:600;line-height:1.6;color:var(--ink-1)}
.p{font-size:.9375rem;line-height:1.85;color:var(--ink-2);max-width:74ch}
.p + .p{margin-top:10px}
.small{font-size:.8125rem;line-height:1.7;color:var(--ink-3)}
.list-dot{display:flex;flex-direction:column;gap:9px;font-size:.9375rem;line-height:1.75;color:var(--ink-2)}
.list-dot li{position:relative;padding-left:16px}
.list-dot li::before{content:"";position:absolute;left:2px;top:.72em;width:4px;height:4px;border-radius:50%;background:var(--line-2)}
.list-num{counter-reset:n;display:flex;flex-direction:column;gap:9px;font-size:.9375rem;line-height:1.75;color:var(--ink-2)}
.list-num li{position:relative;padding-left:22px;counter-increment:n}
.list-num li::before{content:counter(n) ".";position:absolute;left:0;top:0;color:var(--ink-3);font-size:.8125rem;font-variant-numeric:tabular-nums}

/* ---------- detail page ---------- */
.detail-hero{padding-block:clamp(30px,4vw,52px) 0}
.detail-hero h1{font-size:clamp(1.85rem,3.2vw,2.6rem);line-height:1.22;font-weight:650;letter-spacing:-.024em;color:var(--ink-1)}
.detail-tagline{margin-top:14px;font-size:1rem;line-height:1.8;color:var(--ink-2);max-width:60ch}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-top:clamp(26px,3.4vw,40px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kpi{padding:18px 18px 18px 0}
.kpi + .kpi{border-left:1px solid var(--line);padding-left:18px}
.kpi__v{font-size:1.0625rem;font-weight:600;color:var(--brand-ink);line-height:1.4;font-variant-numeric:tabular-nums}
.kpi__v--plain{color:var(--ink-1)}
.kpi__k{margin-top:4px;font-size:12px;color:var(--ink-3);line-height:1.5}

/* layer rail: prev / next */
.rail{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:8px}
.rail a{
  display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--line);border-radius:12px;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail a:hover{border-color:var(--line-2);transform:translateY(-2px)}
.rail small{font-size:11.5px;color:var(--ink-3);letter-spacing:.04em}
.rail span{font-size:.9375rem;font-weight:500;color:var(--ink-1)}

/* ---------- source cards ---------- */
.srcs{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.src{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.src__t{font-size:.9375rem;font-weight:500;color:var(--ink-1);line-height:1.6;display:inline-flex;align-items:center;gap:7px}
.src__t:hover{color:var(--brand-ink)}
.src__t svg{width:12px;height:12px;opacity:.5;flex:none}
.src__m{margin-top:4px;font-size:12px;color:var(--ink-3);display:flex;gap:10px;flex-wrap:wrap}
.src__m .sep{opacity:.5}

/* ---------- placeholder ---------- */
.ph{min-height:calc(100vh - 320px);display:flex;align-items:center;padding-block:clamp(48px,8vw,100px)}
.ph__inner{max-width:680px}
.ph h1{margin-top:18px;font-size:clamp(1.8rem,3.2vw,2.5rem);line-height:1.22;font-weight:650;letter-spacing:-.024em;color:var(--ink-1)}
.ph__lead{margin-top:16px;font-size:1rem;line-height:1.8;color:var(--ink-2);max-width:56ch}
.ph__list{margin-top:30px;border-top:1px solid var(--line)}
.ph__list li{display:flex;gap:14px;padding-block:13px;border-bottom:1px solid var(--line);font-size:.9375rem;color:var(--ink-2)}
.ph__list li span{color:var(--ink-3);font-size:.8125rem;min-width:2.2em;font-variant-numeric:tabular-nums}
.ph__actions{margin-top:32px;display:flex;gap:20px;align-items:center;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{margin-top:clamp(36px,5vw,64px);border-top:1px solid var(--line);background:var(--surface);padding-block:clamp(36px,4.4vw,54px) 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1.1fr);gap:clamp(26px,4vw,60px)}
.footer-brand{display:flex;gap:9px;align-items:center}
.footer-about{margin-top:12px;font-size:.8125rem;line-height:1.75;color:var(--ink-3);max-width:34ch}
.footer-h{font-size:.75rem;letter-spacing:.08em;color:var(--ink-3);margin-bottom:12px;font-weight:500}
.footer-list li + li{margin-top:8px}
.footer-list a{font-size:.8125rem;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;line-height:1.6;transition:color var(--dur) var(--ease)}
.footer-list a:hover{color:var(--brand-ink)}
.footer-list a svg{width:11px;height:11px;opacity:.5;flex:none}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:clamp(28px,3.6vw,42px);padding-block:16px;border-top:1px solid var(--line);font-size:.75rem;color:var(--ink-3)}
.footer-bottom .dotsep{opacity:.5;margin-inline:8px}

/* ---------- command palette ---------- */
.cmdk{
  margin:0;padding:0;border:0;width:min(640px,calc(100vw - 32px));border-radius:14px;
  background:var(--bg);color:var(--ink-2);
  box-shadow:0 24px 60px -12px rgb(16 24 40 / .28),0 0 0 1px var(--line);overflow:hidden;
}
.cmdk::backdrop{background:rgb(16 24 40 / .32);backdrop-filter:blur(3px)}
.cmdk[open]{position:fixed;inset:0;top:max(12vh,72px);margin-inline:auto;height:max-content;max-height:70vh;display:flex;flex-direction:column}
.cmdk__field{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.cmdk__field svg{width:17px;height:17px;color:var(--ink-3);flex:none}
.cmdk input{flex:1;border:0;outline:0;background:transparent;font-size:15.5px;color:var(--ink-1);appearance:none;-webkit-appearance:none}
.cmdk input::-webkit-search-cancel-button,.cmdk input::-webkit-search-decoration{-webkit-appearance:none;appearance:none;display:none}
.cmdk input::placeholder{color:var(--ink-3)}
.cmdk kbd{font-family:inherit;font-size:11px;color:var(--ink-3);border:1px solid var(--line);border-radius:4px;padding:1px 5px;background:var(--surface)}
.cmdk__list{overflow-y:auto;padding:8px;margin:0}
.cmdk__item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--ink-2)}
.cmdk__item[data-active="true"]{background:var(--brand-soft);color:var(--brand-ink)}
.cmdk__item .meta{margin-left:auto;font-size:11.5px;color:var(--ink-3);flex:none}
.cmdk__item .title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cmdk__empty{padding:26px 16px;text-align:center;font-size:13.5px;color:var(--ink-3)}
.cmdk__foot{display:flex;gap:16px;padding:10px 16px;border-top:1px solid var(--line);font-size:11.5px;color:var(--ink-3);background:var(--surface)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:clamp(16px,3vw,32px);bottom:clamp(16px,3vw,32px);z-index:var(--z-totop);
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--bg);border:1px solid var(--line);color:var(--ink-2);
  opacity:0;transform:translateY(8px);pointer-events:none;box-shadow:var(--shadow-1);
  transition:opacity .25s var(--ease),transform .25s var(--ease),border-color .2s;
}
.to-top.is-on{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--line-2);color:var(--ink-1)}
.to-top svg{width:15px;height:15px}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .brand__div,.brand__sub{display:none}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero-copy{max-width:none}
  .hero-panel{aspect-ratio:auto;height:clamp(360px,62vw,520px);max-width:560px;width:100%;margin-inline:auto}
  .nav-links{display:none}
  .nav-burger{display:inline-flex}
  .search-btn .kbd{display:none}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:24px}
  .step:nth-child(3n)::before{right:auto;width:0}
}
@media (max-width:820px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .footer-grid > :first-child{grid-column:1/-1}
  .stats{grid-template-columns:1fr;padding-top:22px;gap:0}
  .stat{padding:14px 0}
  .stat + .stat{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .hero h1 .ln{white-space:normal}
}
@media (max-width:640px){
  /* 表格在窄屏：压缩首列与内边距，保证一屏能看到 1.5 列 */
  .tbl{font-size:.8125rem;min-width:760px}
  .tbl--fit{min-width:0;font-size:.84375rem}
  .tbl--fit th,.tbl--fit td{padding:9px 8px}
  .barlow__label{flex-direction:column;align-items:flex-start;gap:4px}
  .barlow__label span{font-size:11.5px}
  .tbl th,.tbl td{padding:10px 10px}
  .tbl--compare th[scope="row"],
  .tbl--pin th[scope="row"]{min-width:86px;max-width:100px;font-size:.75rem;line-height:1.5}
  .tbl--compare thead th{font-size:.75rem;padding:10px}
  .tbl--compare thead th small{font-size:10px}
  .tbl .cell-note{font-size:10.5px;line-height:1.5}
  .cards{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .diff{grid-template-columns:1fr;gap:4px}
  .diff__num{padding-top:0}
  .hero-actions{gap:14px}
  .btn{height:46px;width:100%;justify-content:center}
  .btn--quiet{width:auto;height:auto;justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(2n)::before{right:auto;width:0}
  .bar{grid-template-columns:76px minmax(0,1fr);row-gap:2px}
  .bar__val{grid-column:2;font-size:12px}
  .kpis{grid-template-columns:1fr 1fr}
  .kpi{padding:14px 12px 14px 0}
  .kpi:nth-child(odd){border-left:0;padding-left:0}
  .segmented{width:100%}
  .segmented label{flex:1;justify-content:center;padding:0 8px}
}

/* ---------- motion ---------- */
html.js .reveal{opacity:0;transform:translateY(10px)}
html.js .reveal.is-in{opacity:1;transform:none;transition:opacity .55s var(--ease),transform .55s var(--ease)}
@media (prefers-reduced-motion: reduce){
  html.js .reveal{opacity:1 !important;transform:none !important}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* ---------- print ---------- */
@media print{
  :root{--bg:#fff;--surface:#fff;--surface-2:#fff;--ink-1:#000;--ink-2:#111;--ink-3:#444;--line:#bbb;--line-2:#999;--brand:#000;--brand-ink:#000}
  html,body{background:#fff !important;color:#000 !important}
  .site-nav,.to-top,.progress,.cmdk,.skip-link,.hero-actions,.section-link,.drawer,.toc,.segmented,.seg-toolbar{display:none !important}
  .wrap{max-width:none;padding-inline:0}
  .hero{padding-block:0 12pt}
  .hero-grid{grid-template-columns:1fr}
  .hero-panel{display:none}
  .section{padding-block:14pt}
  .card,.diff,.faq details,.tbl tr{break-inside:avoid}
  .card{box-shadow:none !important;transform:none !important}
  .tbl{min-width:0;width:100%;table-layout:fixed;font-size:8pt;line-height:1.45}
  .tbl th,.tbl td{padding:4pt 5pt;word-break:break-word;overflow-wrap:anywhere}
  .tbl--compare th[scope="row"],
  .tbl--pin th[scope="row"]{position:static;min-width:0;max-width:none;box-shadow:none;width:14%}
  .tbl--compare thead th:first-child,
  .tbl--pin thead th:first-child{position:static;box-shadow:none}
  .tbl--compare thead th:nth-child(2),.tbl--compare thead th:nth-child(3),
  .tbl--compare thead th:nth-child(4),.tbl--compare thead th:nth-child(5){min-width:0}
  .tbl-wrap{overflow:visible}
  .tbl .cell-note{font-size:7pt;line-height:1.4}
  .tbl-wrap.is-diff-only .tbl--compare tr.is-same{display:table-row}
  .bar__track,.minibar__track{display:none}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:7.5pt;color:#555;word-break:break-all}
  .site-footer{border-top:1px solid #999;background:#fff;padding-top:10pt}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-list a::after{content:""}
  .tabpanel{display:block !important}
}