/* ==========================================================================
   毕洪科技 BIHONG — bihongit.com
   Design system: "precision instrument" — dark blueprint, single acid accent
   ========================================================================== */

/* ---------- Fonts (self-hosted, no external requests) ---------- */
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-stretch:100%;font-display:swap;src:url('/assets/fonts/f01.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-stretch:100%;font-display:swap;src:url('/assets/fonts/f02.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:100 800;font-display:swap;src:url('/assets/fonts/f08.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ---------- Tokens ---------- */
:root{
  /* ---- 暖调亮色主题：纸感底色 + 暖黑文字 + 赭石强调色 ---- */
  --ink:#F7F3EC;
  --ink-1:#F1EBE1;
  --ink-2:#FFFDF9;
  --paper:#1B1815;
  --dim:#564F46;
  --muted:#7A7164;
  --line:rgba(27,24,21,.10);
  --line-2:rgba(27,24,21,.18);
  --accent:#A85A18;
  --accent-2:#8E4A11;
  --warm:#C2410C;
  --shadow:0 1px 2px rgba(74,56,32,.05),0 16px 38px -18px rgba(74,56,32,.22);
  --font:'Archivo',-apple-system,BlinkMacSystemFont,'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Consolas,'Liberation Mono',monospace;
  --wrap:1280px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;background:var(--ink);color:var(--paper);
  font-family:var(--font);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  font-feature-settings:"kern" 1;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:var(--accent);color:#FFFBF4}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:1px}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--ink)}
::-webkit-scrollbar-thumb{background:#DED6C8;border:3px solid var(--ink);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#C6BCAC}
.mono{font-family:var(--mono);font-weight:400}

/* ---------- Atmosphere ---------- */
.grain{
  position:fixed;inset:-50%;z-index:9998;pointer-events:none;opacity:.045;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/></filter><rect width='180' height='180' filter='url(%23n)'/></svg>");
  animation:grain 6s steps(6) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}20%{transform:translate(-4%,3%)}40%{transform:translate(3%,-4%)}
  60%{transform:translate(-3%,-3%)}80%{transform:translate(4%,2%)}100%{transform:translate(0,0)}
}
.glow{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(760px 520px at 88% -6%,rgba(168,90,24,.10),transparent 62%),
    radial-gradient(620px 480px at 4% 22%,rgba(168,90,24,.06),transparent 66%);
}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--accent);color:#FFFBF4;padding:10px 18px}
.skip:focus{left:12px;top:12px}

/* ---------- Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,40px);position:relative;z-index:1}
.section{padding:clamp(72px,10vw,140px) 0;position:relative;z-index:1}
.section--alt{background:linear-gradient(180deg,#F1EBE1,#F7F3EC);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.sec-head{max-width:900px;margin-bottom:clamp(38px,5.5vw,72px)}
.mono-lbl{
  display:flex;align-items:center;gap:11px;font-family:var(--mono);font-size:.7rem;
  letter-spacing:.24em;text-transform:uppercase;color:var(--muted);margin-bottom:20px;
}
.mono-lbl i{width:18px;height:1px;background:var(--accent);display:block;flex:none}
.sec-title{
  font-size:clamp(1.72rem,4.3vw,3.05rem);line-height:1.16;letter-spacing:-.035em;
  font-weight:700;text-wrap:balance;
}
.sec-title em{font-style:normal;color:var(--accent);position:relative;white-space:nowrap}
.sec-title em::after{
  content:'';position:absolute;left:0;right:0;bottom:.04em;height:1px;
  background:linear-gradient(90deg,var(--accent),transparent);
}
.sec-sub{margin-top:20px;font-size:clamp(.94rem,1.1vw,1.04rem);line-height:1.9;color:var(--dim);max-width:64ch;text-wrap:pretty}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:44px;padding:0 21px;border:1px solid var(--line-2);border-radius:2px;
  font-size:.875rem;font-weight:600;letter-spacing:-.005em;color:var(--paper);
  background:transparent;cursor:pointer;white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn--acid{background:var(--accent);border-color:var(--accent);color:#FFFBF4}
.btn--acid:hover{background:#8E4A11;transform:translateY(-1px);box-shadow:0 10px 30px -12px rgba(168,90,24,.55)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(168,90,24,.05)}
.btn--lg{height:52px;padding:0 27px;font-size:.94rem}
.btn--sm{height:38px;padding:0 15px;font-size:.8rem}
.btn:active{transform:translateY(0)}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:120;transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s}
.nav__in{display:flex;align-items:center;gap:26px;height:66px;max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.nav.is-stuck{background:rgba(247,243,236,.86);backdrop-filter:blur(16px) saturate(1.5);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand__mark svg{width:30px;height:30px}
.brand__mark{color:var(--paper)}
.brand__txt b{display:block;font-size:.96rem;font-weight:700;letter-spacing:-.02em;line-height:1.25}
.brand__txt i{display:block;font-style:normal;font-family:var(--mono);font-size:.58rem;letter-spacing:.36em;color:var(--muted);margin-top:2px}
.menu{margin-left:auto;display:flex;align-items:center;gap:2px}
.menu a{padding:9px 13px;font-size:.865rem;color:var(--dim);border-radius:2px;transition:color .2s,background .2s;position:relative}
.menu a::after{content:'';position:absolute;left:13px;right:13px;bottom:4px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.menu a:hover{color:var(--paper)}
.menu a:hover::after,.menu a.is-active::after{transform:scaleX(1)}
.menu a.is-active{color:var(--accent)}
.nav__cta{display:flex;align-items:center;gap:9px;flex:none}
.burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;background:none;border:1px solid var(--line-2);border-radius:2px;cursor:pointer;padding:0}
.burger span{display:block;height:1.4px;width:16px;margin:0 auto;background:var(--paper);transition:transform .28s var(--ease)}

/* ---------- Hero ---------- */
.hero{padding:calc(66px + clamp(52px,8vw,104px)) 0 clamp(48px,7vw,84px);position:relative;overflow:hidden}
.hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:calc(100% / 6) 100%;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.25) 55%,transparent 82%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.25) 55%,transparent 82%);
  opacity:.75;
}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:clamp(30px,4.5vw,62px);align-items:start}
.tag{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);padding:8px 13px;border-radius:2px;background:rgba(255,253,249,.75)}
.dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(168,90,24,.55)}70%{box-shadow:0 0 0 7px rgba(168,90,24,0)}100%{box-shadow:0 0 0 0 rgba(168,90,24,0)}}
.hero__h1{font-size:clamp(2.15rem,5.9vw,4.25rem);line-height:1.06;letter-spacing:-.045em;font-weight:700;margin:24px 0 24px}
.hero__h1 span{display:block}
.hero__h1 em{font-style:normal;color:var(--accent)}
.hero__sub{font-size:clamp(.95rem,1.15vw,1.05rem);line-height:1.92;color:var(--dim);max-width:58ch}
.hero__sub b{color:var(--paper);font-weight:600}
.hero__act{display:flex;gap:11px;margin-top:32px;flex-wrap:wrap}
.hero__facts{display:flex;gap:clamp(20px,3.4vw,46px);margin-top:42px;padding-top:28px;border-top:1px solid var(--line);flex-wrap:wrap}
.hero__facts li b{display:block;font-size:clamp(1.5rem,2.5vw,1.95rem);font-weight:700;letter-spacing:-.045em;line-height:1}
.hero__facts li b small{font-size:.85rem;color:var(--accent);margin-left:1px}
.hero__facts li span{display:block;margin-top:9px;font-family:var(--mono);font-size:.7rem;color:var(--muted);letter-spacing:.04em}

/* ---------- Spec card ---------- */
.spec{
  border:1px solid var(--line);border-radius:2px;position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFDF9,#FBF7F0);
  box-shadow:var(--shadow);
}
.spec::after{content:'';position:absolute;top:-1px;right:-1px;width:52px;height:52px;background:linear-gradient(225deg,rgba(168,90,24,.35),transparent 62%);pointer-events:none}
.spec__bar{display:flex;align-items:center;gap:11px;padding:12px 15px;border-bottom:1px solid var(--line);background:rgba(27,24,21,.035)}
.spec__dots{display:flex;gap:5px}
.spec__dots i{width:7px;height:7px;border-radius:50%;background:rgba(27,24,21,.18)}
.spec__file{font-family:var(--mono);font-size:.68rem;color:var(--muted)}
.spec__live{margin-left:auto;display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.63rem;letter-spacing:.14em;color:var(--accent)}
.spec__live i{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:pulse 1.9s var(--ease) infinite}
.spec__head{padding:22px 22px 16px}
.spec__head .mono{font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.spec__head h3{font-size:1.16rem;font-weight:700;letter-spacing:-.02em;margin-top:9px}
.spec__meta{font-family:var(--mono);font-size:.74rem;color:var(--dim);margin-top:6px}
.spec__list{padding:0 22px}
.spec__list li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(27,24,21,.13);font-size:.855rem}
.spec__k{color:var(--dim)}
.spec__d{font-family:var(--mono);font-size:.78rem;color:var(--paper);flex:none}
.spec.is-run .spec__list li{animation:specIn .55s var(--ease) both}
.spec.is-run .spec__list li:nth-child(1){animation-delay:.18s}
.spec.is-run .spec__list li:nth-child(2){animation-delay:.36s}
.spec.is-run .spec__list li:nth-child(3){animation-delay:.54s}
.spec.is-run .spec__list li:nth-child(4){animation-delay:.72s}
.spec.is-run .spec__list li:nth-child(5){animation-delay:.9s}
@keyframes specIn{from{opacity:0;transform:translateX(-9px)}to{opacity:1;transform:none}}
.js .spec__list li{opacity:0}
.spec__sum{padding:18px 22px;display:grid;gap:11px}
.spec__sum>div{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.spec__sum .mono{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;color:var(--muted)}
.spec__sum b{font-size:1rem;font-weight:700;letter-spacing:-.02em}
.spec__sum b#specTotal{color:var(--accent)}
.spec__sum b.dim{color:var(--muted);font-weight:400;font-size:.8rem;text-decoration:line-through;text-decoration-color:rgba(194,65,12,.5)}
.spec__bar2{height:2px;background:rgba(27,24,21,.08)}
.spec__bar2 i{display:block;height:100%;width:0;background:var(--accent);transition:width 1.6s var(--ease) .3s}

/* ---------- Hints ---------- */
.hints{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:clamp(42px,6vw,76px);padding-top:22px;border-top:1px solid var(--line);font-size:.86rem;color:var(--dim)}
.hints .mono{font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.hints i{color:rgba(27,24,21,.22);font-style:normal}

/* ---------- Comparison bars ---------- */
.bars{display:grid;gap:clamp(26px,3.4vw,40px);margin-bottom:clamp(40px,6vw,66px)}
.bar__head{display:flex;justify-content:space-between;align-items:baseline;gap:14px;margin-bottom:12px}
.bar__head b{font-size:.96rem;font-weight:600}
.bar__head .mono{font-family:var(--mono);font-size:.75rem;color:var(--muted)}
.bar--us .bar__head b{color:var(--accent)}
.bar--us .bar__head .mono{color:var(--paper)}
.bar__scale{
  position:relative;height:46px;border:1px solid var(--line);border-radius:2px;background:rgba(27,24,21,.02);overflow:hidden;
  background-image:linear-gradient(90deg,rgba(27,24,21,.09) 1px,transparent 1px);
  background-size:10% 100%;
}
.bar__fill{display:flex;height:100%;gap:3px;padding:4px;width:var(--w,100%);transition:width 1.25s var(--ease)}
.js .bar__fill{width:0}
.js .bars.is-run .bar__fill{width:var(--w,100%)}
.bar__fill i{display:block;height:100%;width:var(--w);border-radius:1px;background:rgba(27,24,21,.09);transition:background .3s}
.bar__fill--trad i:nth-child(1){background:rgba(27,24,21,.16)}
.bar__fill--trad i:nth-child(2){background:rgba(27,24,21,.12)}
.bar__fill--trad i:nth-child(3){background:rgba(27,24,21,.2)}
.bar__fill--trad i:nth-child(4){background:rgba(27,24,21,.13)}
.bar__fill--trad i:nth-child(5){background:rgba(27,24,21,.18)}
.bar__fill--us i{background:var(--accent)}
.bar__fill--us i:nth-child(2){background:rgba(168,90,24,.6)}
.bar__fill--us i:nth-child(4){background:rgba(168,90,24,.75)}
.bar__fill--us i:nth-child(5){background:rgba(168,90,24,.5)}
.bar__legend{font-family:var(--mono);font-size:.7rem;color:var(--muted);margin-top:11px;letter-spacing:.02em}
.bar__legend b{color:var(--dim);font-weight:400}
.bar--us .bar__legend b{color:var(--accent)}
.bars__note{font-family:var(--mono);font-size:.68rem;color:var(--muted);line-height:1.8}

.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:2px;overflow:hidden}
.tile{background:var(--ink);padding:clamp(22px,2.6vw,30px);transition:background .3s}
.tile:hover{background:var(--ink-2)}
.tile__n{font-family:var(--mono);font-size:.7rem;color:var(--accent);letter-spacing:.16em}
.tile h3{font-size:1.02rem;font-weight:600;margin:14px 0 9px;letter-spacing:-.015em}
.tile p{font-size:.86rem;color:var(--dim);line-height:1.8}

/* ---------- Cost ---------- */
.split{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);gap:clamp(30px,4.5vw,64px);align-items:start}
.cmp{border-top:1px solid var(--line)}
.cmp li{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:17px 0;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--dim)}
.cmp .down{font-family:var(--mono);font-size:.85rem;color:var(--accent);font-weight:400;flex:none}
.cmp__note{font-family:var(--mono);font-size:.67rem;color:var(--muted);margin-top:16px;line-height:1.8}
.cmp__note b.cap{color:var(--accent);font-weight:500}
.price-table{border:1px solid var(--line);border-radius:2px;overflow:hidden}
.price-table__row{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:12px;padding:15px 18px;border-bottom:1px solid var(--line);font-size:.86rem;align-items:center;transition:background .25s}
.price-table__row:last-child{border-bottom:0}
.price-table__row:hover{background:rgba(27,24,21,.025)}
.price-table__row span:first-child{color:var(--dim)}
.price-table__row s{color:var(--muted);font-family:var(--mono);font-size:.78rem}
.price-table__row b{color:var(--accent);font-weight:600;font-family:var(--mono);font-size:.82rem}
.price-table__row--head{background:rgba(27,24,21,.035);font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.price-table__row--head span{color:var(--muted) !important}

/* ---------- Capability ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:2px;overflow:hidden}
.cap{background:var(--ink);padding:clamp(20px,2.4vw,28px);position:relative;transition:background .3s}
.cap::before{content:'';position:absolute;top:0;left:0;height:2px;width:0;background:var(--accent);transition:width .45s var(--ease)}
.cap:hover{background:var(--ink-2)}
.cap:hover::before{width:100%}
.cap__ico{display:inline-flex;width:26px;height:26px;color:var(--accent)}
.cap__ico svg{width:26px;height:26px;stroke-linecap:round;stroke-linejoin:round}
.cap h3{font-size:.99rem;font-weight:600;margin:18px 0 9px;letter-spacing:-.015em}
.cap p{font-size:.845rem;color:var(--dim);line-height:1.8}
.cap__meta{font-family:var(--mono);font-size:.68rem;color:var(--muted);margin-top:16px;padding-top:13px;border-top:1px solid var(--line);letter-spacing:.06em}
.cap--hl{background:linear-gradient(180deg,rgba(168,90,24,.065),transparent 70%),var(--ink)}
.cap--hl .cap__meta{color:var(--accent)}

/* ---------- Flow ---------- */
.flow{border-top:1px solid var(--line)}
.flow__item{display:grid;grid-template-columns:clamp(52px,7vw,104px) minmax(0,1fr);gap:clamp(16px,3vw,34px);padding:clamp(24px,3vw,34px) 0;border-bottom:1px solid var(--line);position:relative}
.flow__item::after{content:'';position:absolute;left:0;bottom:-1px;height:1px;width:0;background:var(--accent);transition:width .6s var(--ease)}
.flow__item:hover::after{width:100%}
.flow__idx{font-family:var(--mono);font-size:clamp(1.3rem,2.2vw,1.75rem);color:rgba(27,24,21,.17);letter-spacing:-.03em;transition:color .35s}
.flow__item:hover .flow__idx{color:var(--accent)}
.flow__body h3{font-size:clamp(1rem,1.4vw,1.16rem);font-weight:600;letter-spacing:-.02em;display:flex;gap:12px;align-items:baseline;flex-wrap:wrap}
.flow__body h3 .mono{font-family:var(--mono);font-size:.71rem;color:var(--accent);letter-spacing:.1em;font-weight:400}
.flow__body>p{font-size:.9rem;color:var(--dim);line-height:1.85;margin-top:11px;max-width:82ch}
.flow__split{display:flex;flex-wrap:wrap;gap:6px 20px;font-family:var(--mono);font-size:.73rem;color:var(--muted);margin-top:15px !important;line-height:1.7 !important}
.flow__split span{display:inline-flex;flex-wrap:wrap;align-items:baseline}
.flow__split b{color:var(--accent);font-weight:500;margin-right:7px}

/* ---------- Estimator ---------- */
.est{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(330px,.78fr);gap:0;border:1px solid var(--line);border-radius:2px;background:linear-gradient(180deg,#FFFDF9,#FCF8F2);overflow:hidden}
.est__form{padding:clamp(22px,3vw,36px)}
.est__group{border:0;padding:0;margin:0 0 30px}
.est__group:last-child{margin-bottom:0}
.est__group legend{font-size:.9rem;font-weight:600;padding:0;margin-bottom:15px;display:flex;align-items:center;gap:10px}
.est__group legend .mono{font-family:var(--mono);font-size:.7rem;color:var(--accent);letter-spacing:.1em}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{position:relative;display:inline-flex}
.chips input{position:absolute;inset:0;opacity:0;margin:0;cursor:pointer;width:100%;height:100%}
.chips label>span{display:inline-flex;align-items:center;height:40px;padding:0 16px;border:1px solid var(--line-2);border-radius:2px;font-size:.82rem;color:var(--dim);white-space:nowrap;transition:all .22s var(--ease);user-select:none}
.chips label:hover>span{border-color:rgba(27,24,21,.42);color:var(--paper);background:rgba(27,24,21,.03)}
.chips input:checked+span{background:var(--accent);border-color:var(--accent);color:#FFFBF4;font-weight:600}
.chips input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.chips input:active+span{transform:scale(.98)}
.est__out{border-left:1px solid var(--line);padding:clamp(22px,3vw,36px);background:rgba(27,24,21,.03);display:flex;flex-direction:column}
.est__outlbl{font-family:var(--mono);font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
.est__price{display:flex;align-items:baseline;gap:5px;margin:12px 0 6px}
.est__cur{font-size:1.25rem;color:var(--accent);opacity:.85;font-weight:600}
.est__price b{font-size:clamp(2.5rem,5.4vw,3.5rem);font-weight:700;letter-spacing:-.055em;line-height:.95;color:var(--accent);font-variant-numeric:tabular-nums}
.est__unit{font-size:.95rem;color:var(--muted);margin-left:2px}
.est__range{font-family:var(--mono);font-size:.79rem;color:var(--dim);letter-spacing:.02em}
.est__kv{margin:24px 0;border-top:1px solid var(--line)}
.est__kv>div{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.82rem}
.est__kv dt{color:var(--muted)}
.est__kv dd{margin:0;font-family:var(--mono);font-size:.78rem;color:var(--paper);text-align:right}
.est__save{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:22px}
.est__save>div{border:1px solid rgba(168,90,24,.24);background:rgba(168,90,24,.05);padding:13px 15px;border-radius:2px}
.est__save b{display:block;color:var(--accent);font-size:1.02rem;letter-spacing:-.025em;font-variant-numeric:tabular-nums}
.est__save span{display:block;font-family:var(--mono);font-size:.66rem;color:var(--muted);margin-top:5px;letter-spacing:.1em}
.est__brief p{font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:9px}
.est__brief textarea{width:100%;background:#FFFDF9;border:1px solid var(--line);border-radius:2px;color:var(--dim);font-family:var(--mono);font-size:.73rem;line-height:1.75;padding:13px;resize:vertical;transition:border-color .25s}
.est__brief textarea:focus{outline:none;border-color:var(--accent)}
.est__act{display:flex;gap:9px;margin-top:15px;flex-wrap:wrap}
.est__note{font-family:var(--mono);font-size:.66rem;color:var(--muted);margin-top:15px;line-height:1.8}

/* ---------- Cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:2px;overflow:hidden}
.case{background:var(--ink);padding:clamp(22px,3vw,36px);position:relative;transition:background .35s}
.case::before{content:'';position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .45s;
  background:radial-gradient(520px circle at var(--mx,78%) var(--my,0%),rgba(168,90,24,.09),transparent 62%)}
.case:hover{background:var(--ink-2)}
.case:hover::before{opacity:1}
.case__cat{font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent)}
.case h3{font-size:clamp(1.05rem,1.5vw,1.22rem);font-weight:600;margin:15px 0 11px;letter-spacing:-.022em}
.case>p{font-size:.87rem;color:var(--dim);line-height:1.85;max-width:56ch}
.case__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:19px}
.case__tags li{font-family:var(--mono);font-size:.66rem;color:var(--muted);border:1px solid var(--line);padding:5px 10px;border-radius:2px;letter-spacing:.03em}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-bottom:clamp(52px,7vw,92px)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:24px 46px 24px 0;font-size:clamp(.96rem,1.25vw,1.04rem);font-weight:600;letter-spacing:-.015em;position:relative;transition:color .25s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary i{position:absolute;right:10px;top:50%;width:15px;height:15px;margin-top:-7px;color:var(--muted)}
.faq summary:hover i{color:var(--accent)}
.faq summary i::before,.faq summary i::after{content:'';position:absolute;background:currentColor;transition:transform .3s var(--ease),opacity .3s}
.faq summary i::before{left:0;top:6.5px;width:15px;height:1.4px}
.faq summary i::after{left:6.7px;top:0;width:1.4px;height:15px}
.faq details[open] summary{color:var(--accent)}
.faq details[open] summary i::after{transform:scaleY(0);opacity:0}
.faq__a{padding:0 0 28px;display:grid;gap:13px;max-width:90ch;animation:faqIn .4s var(--ease)}
@keyframes faqIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}
.faq__a p{font-size:.89rem;color:var(--dim);line-height:1.9}
.faq__a b{color:var(--paper);font-weight:600}

/* ---------- Stack marquee ---------- */
.stack .mono-lbl{margin-bottom:18px}
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.marquee__in{display:flex;gap:10px;width:max-content;animation:marq 46s linear infinite}
.marquee__in span{font-family:var(--mono);font-size:.78rem;color:var(--dim);border:1px solid var(--line);padding:9px 15px;border-radius:2px;white-space:nowrap;transition:color .25s,border-color .25s}
.marquee:hover .marquee__in{animation-play-state:paused}
.marquee__in span:hover{color:var(--accent);border-color:rgba(168,90,24,.35)}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- About ---------- */
.about{display:grid;grid-template-columns:minmax(0,1.14fr) minmax(0,.86fr);gap:clamp(28px,5vw,66px);align-items:start}
.about__text p{font-size:clamp(.94rem,1.15vw,1rem);line-height:1.95;color:var(--dim);margin-bottom:20px;max-width:62ch}
.about__act{display:flex;gap:11px;margin-top:28px;flex-wrap:wrap}
.about__meta{border-top:1px solid var(--line)}
.about__meta>div{display:grid;grid-template-columns:clamp(110px,14vw,160px) minmax(0,1fr);gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}
.about__meta dt{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;color:var(--muted);line-height:1.6}
.about__meta dd{font-size:.87rem;color:var(--paper);line-height:1.7}

/* ---------- Contact ---------- */
.contact{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(28px,4.5vw,60px);align-items:start}
.cline{display:flex;flex-direction:column;gap:7px;padding:18px 0;border-bottom:1px solid var(--line);transition:color .25s;background:none;border-left:0;border-right:0;border-top:0;text-align:left;width:100%;cursor:pointer;font-family:inherit}
.cline .mono{font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.cline b{font-size:clamp(.98rem,1.4vw,1.08rem);font-weight:600;letter-spacing:-.015em;transition:color .25s}
.cline em{font-style:normal;font-family:var(--mono);font-size:.66rem;color:var(--accent);opacity:.55;transition:opacity .25s,transform .25s}
.cline:hover b{color:var(--accent)}
.cline:hover em,.cline:focus-visible em{opacity:1;transform:none}
.cline--static{cursor:default}
.cline--static:hover b{color:var(--paper)}
.contact__hours{font-family:var(--mono);font-size:.7rem;color:var(--muted);margin-top:22px;line-height:1.9}
.contact__privacy{font-family:var(--mono);font-size:.68rem;color:var(--muted);margin-top:8px;opacity:.75}
.form{border:1px solid var(--line);border-radius:2px;padding:clamp(20px,3vw,34px);background:linear-gradient(180deg,#FFFDF9,#FCF8F2);position:relative}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:9px;margin-bottom:16px}
.field .mono{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.field .mono i{color:var(--accent);font-style:normal}
.field input,.field select,.field textarea{width:100%;background:#FFFDF9;border:1px solid var(--line);border-radius:2px;color:var(--paper);padding:13px 14px;font-size:.9rem;font-family:inherit;transition:border-color .22s,background .22s}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--line-2)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#FFFFFF}
.field input::placeholder,.field textarea::placeholder{color:#A79E92}
.field textarea{resize:vertical;line-height:1.75}
.field select{appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 19px) calc(50% + 1px),calc(100% - 14px) calc(50% + 1px);
  background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field select option{background:var(--ink-2);color:var(--paper)}
.hp{position:absolute !important;left:-9999px !important;width:1px;height:1px;opacity:0}
.form__act{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:8px}
.form__hint{font-family:var(--mono);font-size:.69rem;color:var(--muted);line-height:1.7}
.form__msg{font-size:.85rem;margin-top:16px;min-height:0;line-height:1.7}
.form__msg.ok{color:var(--accent)}
.form__msg.err{color:var(--warm)}
.form.is-sent .form__act{display:none}
.form__done{border:1px solid rgba(168,90,24,.3);background:rgba(168,90,24,.06);padding:22px;border-radius:2px}
.form__done b{display:block;color:var(--accent);font-size:1.02rem;margin-bottom:8px}
.form__done p{font-size:.87rem;color:var(--dim);line-height:1.85}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding:clamp(38px,5vw,52px) 0 42px;background:rgba(241,235,225,.8);position:relative;z-index:1}
.footer__in{display:grid;grid-template-columns:1.15fr 1.3fr .95fr;gap:clamp(22px,3vw,40px);align-items:start}
.footer__brand{display:flex;gap:12px;align-items:flex-start}
.footer__brand .brand__mark svg{width:32px;height:32px}
.footer__brand b{font-size:.95rem;letter-spacing:-.01em}
.footer__brand p{font-size:.79rem;color:var(--muted);margin-top:5px}
.footer__nav{display:flex;flex-wrap:wrap;gap:9px 20px;font-size:.83rem}
.footer__nav a{color:var(--dim);transition:color .22s}
.footer__nav a:hover{color:var(--accent)}
.footer__meta{font-family:var(--mono);font-size:.68rem;color:var(--muted);text-align:right;line-height:2}
.footer__meta p{letter-spacing:.02em}
.footer__meta .footer__icp a{color:inherit;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.footer__meta .footer__icp a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- Reveal on scroll ---------- */
.js .reveal{opacity:0;transform:translateY(17px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--d,0) * 75ms)}
[data-d="0"]{--d:0}[data-d="1"]{--d:1}[data-d="2"]{--d:2}[data-d="3"]{--d:3}
[data-d="4"]{--d:4}[data-d="5"]{--d:5}[data-d="6"]{--d:6}

/* ---------- Responsive ---------- */
@media (max-width:1120px){
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .spec{max-width:620px}
  .split,.about,.contact{grid-template-columns:1fr}
  .est{grid-template-columns:1fr}
  .est__out{border-left:0;border-top:1px solid var(--line)}
  .footer__in{grid-template-columns:1fr 1fr}
  .footer__meta{grid-column:1 / -1;text-align:left}
}
@media (max-width:900px){
  .hide-sm{display:none}
  .burger{display:flex}
  .menu{
    position:fixed;top:66px;left:0;right:0;margin:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(247,243,236,.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
    padding:8px clamp(20px,4vw,40px) 22px;opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease);
  }
  .menu.is-open{opacity:1;transform:none;pointer-events:auto}
  .menu a{padding:15px 0;border-bottom:1px solid var(--line);font-size:1rem;color:var(--paper)}
  .menu a::after{display:none}
  .flow__item{grid-template-columns:1fr;gap:10px}
  .flow__idx{font-size:1.1rem}
}
@media (max-width:720px){
  .cards3{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .footer__in{grid-template-columns:1fr}
  .hero__facts{gap:22px 32px}
  .hero__facts li{flex:1 1 40%}
  .est__save{grid-template-columns:1fr}
  .about__meta>div{grid-template-columns:1fr;gap:6px}
  .bar__scale{height:38px}
  .bar__legend{font-size:.63rem}
  .price-table__row{grid-template-columns:1.3fr 1fr 1fr;gap:8px;padding:13px 14px;font-size:.79rem}
  .marquee__in{animation-duration:32s}
}
@media (max-width:420px){
  .hero__act .btn{width:100%}
  .chips label>span{height:38px;padding:0 13px;font-size:.78rem}
}


/* ---------- 子页面：页头 ---------- */
.phead{padding:calc(66px + clamp(42px,6vw,76px)) 0 clamp(32px,4.5vw,54px);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.phead::before{content:'';position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:calc(100% / 6) 100%;
  -webkit-mask-image:linear-gradient(180deg,#000,rgba(0,0,0,.2) 60%,transparent 88%);
  mask-image:linear-gradient(180deg,#000,rgba(0,0,0,.2) 60%,transparent 88%);opacity:.7}
.phead .wrap{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-family:var(--mono);font-size:.69rem;color:var(--muted);margin-bottom:24px}
.crumbs a{color:var(--muted);transition:color .2s}
.crumbs a:hover{color:var(--accent)}
.crumbs i{font-style:normal;opacity:.45}
.phead h1{font-size:clamp(1.85rem,4.5vw,3.15rem);line-height:1.16;letter-spacing:-.042em;font-weight:700;max-width:22ch;text-wrap:balance}
.phead__lead{margin-top:20px;font-size:clamp(.94rem,1.15vw,1.04rem);line-height:1.92;color:var(--dim);max-width:62ch}
.phead__facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.phead__facts span{font-family:var(--mono);font-size:.73rem;color:var(--dim);border:1px solid var(--line);background:rgba(255,253,249,.6);padding:8px 13px;border-radius:2px}
.phead__facts b{color:var(--accent);font-weight:500}
.phead__act{display:flex;gap:11px;margin-top:30px;flex-wrap:wrap}

/* ---------- 子页面：正文 ---------- */
.prose{max-width:850px}
.prose h2{font-size:clamp(1.22rem,2.2vw,1.68rem);font-weight:700;letter-spacing:-.03em;line-height:1.32;margin:clamp(36px,4.4vw,56px) 0 18px;text-wrap:balance}
.prose>h2:first-child{margin-top:0}
.prose p{font-size:.935rem;line-height:1.95;color:var(--dim);margin-bottom:16px}
.prose b,.prose strong{color:var(--paper);font-weight:600}
.prose ul,.prose ol{display:grid;gap:11px;margin:0 0 18px}
.prose ul li{position:relative;padding-left:23px;font-size:.92rem;line-height:1.85;color:var(--dim)}
.prose ul li::before{content:'';position:absolute;left:3px;top:.75em;width:7px;height:1.5px;background:var(--accent)}
.prose ol{counter-reset:pn}
.prose ol li{counter-increment:pn;position:relative;padding-left:34px;font-size:.92rem;line-height:1.85;color:var(--dim)}
.prose ol li::before{content:counter(pn,decimal-leading-zero);position:absolute;left:0;top:.1em;font-family:var(--mono);font-size:.74rem;color:var(--accent)}
.prose table{width:100%;border-collapse:collapse;margin:0 0 14px;font-size:.85rem}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.prose th{font-family:var(--mono);font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);background:rgba(27,24,21,.035);white-space:nowrap}
.prose td{color:var(--dim)}
.prose td b{color:var(--accent);font-family:var(--mono);font-weight:500;white-space:nowrap}
.prose__note{font-family:var(--mono);font-size:.69rem;color:var(--muted);line-height:1.8;margin:-4px 0 20px}

/* ---------- 相关页面 ---------- */
.rel{padding:clamp(44px,5.5vw,70px) 0;border-top:1px solid var(--line)}
.rel h2{font-size:1.12rem;font-weight:600;letter-spacing:-.02em;margin-bottom:20px}
.rel__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:2px;overflow:hidden}
.rel__grid a{display:block;background:var(--ink);padding:20px 22px;transition:background .25s}
.rel__grid a:hover{background:var(--ink-2)}
.rel__grid b{display:block;font-size:.94rem;font-weight:600;margin-bottom:7px;transition:color .25s}
.rel__grid a:hover b{color:var(--accent)}
.rel__grid span{display:block;font-size:.79rem;color:var(--muted);line-height:1.7}

/* ---------- 页脚号召 ---------- */
.cta{background:var(--ink-1);border-top:1px solid var(--line);padding:clamp(42px,5.5vw,70px) 0}
.cta__in{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta h2{font-size:clamp(1.25rem,2.5vw,1.85rem);letter-spacing:-.032em;font-weight:700;line-height:1.28;max-width:24ch}
.cta p{font-size:.88rem;color:var(--dim);margin-top:11px;max-width:54ch;line-height:1.8}
.cta__act{display:flex;gap:11px;flex-wrap:wrap}

/* ---------- 页脚服务导航 ---------- */
.footer__svc{grid-column:1 / -1;border-top:1px solid var(--line);padding-top:24px;margin-top:8px}
.footer__svc h3{font-family:var(--mono);font-size:.65rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-weight:400}
.footer__svc ul{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:.82rem}
.footer__svc a{color:var(--dim);transition:color .22s}
.footer__svc a:hover{color:var(--accent)}

@media (max-width:900px){
  .rel__grid{grid-template-columns:1fr}
  .phead h1{max-width:none}
}
@media (max-width:720px){
  .prose table{font-size:.79rem}
  .prose th,.prose td{padding:10px}
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
  .js .spec__list li{opacity:1}
  .js .bar__fill{width:var(--w,100%)}
  .spec__bar2 i{width:100%}
}