/* ==========================================================================
   Lingvent Design — custom soft PVC & food-grade silicone manufacturer
   浅色主题：米白底 + 柔青主色 + 暖珊瑚强调
   ========================================================================== */

:root {
  --bg:        #FAF8F5;
  --surface:   #FFFFFF;
  --surface-2: #F2EEE8;
  --surface-3: #E9E3DA;
  --ink:       #1D2A2A;
  --ink-2:     #55635F;
  --ink-3:     #7D8A86;
  --brand:     #2E6F6B;
  --brand-dk:  #22524F;
  --brand-lt:  #E3EFEC;
  --accent:    #DE7A5C;
  --accent-lt: #FBEAE3;
  --line:      #E3DCD2;
  --line-2:    #D3C9BC;

  --r-sm: 6px;
  --r:    12px;
  --r-lg: 20px;

  --sh-1: 0 1px 2px rgba(29,42,42,.05), 0 2px 8px rgba(29,42,42,.04);
  --sh-2: 0 4px 12px rgba(29,42,42,.07), 0 12px 32px rgba(29,42,42,.06);

  --wrap: 1180px;
  --gap: 28px;
  --font: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dk); text-decoration: underline; }

h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; letter-spacing: -.018em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.6vw, 3.15rem); }
h2 { font-size: clamp(1.5rem, 2.9vw, 2.15rem); }
h3 { font-size: clamp(1.12rem, 1.7vw, 1.32rem); }
p  { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.15em; }
li { margin-bottom: .4em; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--brand); color: #fff; padding: 8px 14px; border-radius: var(--r-sm); z-index: 99; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,248,245,.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-in {
  display: flex; align-items: center; gap: 20px;
  min-height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.12rem; color: var(--ink); letter-spacing: -.02em; }
.logo:hover { text-decoration: none; color: var(--ink); }
.logo-mark {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  background: linear-gradient(140deg, var(--brand) 0%, #3F8A82 100%);
  display: grid; place-items: center; color: #fff; font-size: .82rem; font-weight: 700;
  box-shadow: 0 2px 6px rgba(46,111,107,.28);
}
.logo small { display: block; font-size: .66rem; font-weight: 500; color: var(--ink-3); letter-spacing: .04em; text-transform: uppercase; line-height: 1; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.main-nav a {
  display: block; padding: 8px 13px; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: .93rem; font-weight: 500;
}
.main-nav a:hover { background: var(--brand-lt); color: var(--brand-dk); text-decoration: none; }
.main-nav a[aria-current="page"] { color: var(--brand-dk); font-weight: 650; background: var(--brand-lt); }

.header-tools { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px;
  overflow: hidden; font-size: .8rem; font-weight: 600;
}
.lang-switch a, .lang-switch span { padding: 5px 11px; color: var(--ink-2); }
.lang-switch a:hover { background: var(--brand-lt); text-decoration: none; }
.lang-switch .on { background: var(--brand); color: #fff; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer; transition: .18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 2px 10px rgba(46,111,107,.22); }
.btn-primary:hover { background: var(--brand-dk); color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-accent  { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #CB6A4D; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-ghost   { border-color: var(--line-2); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dk); text-decoration: none; }
.btn-sm { padding: 9px 17px; font-size: .89rem; }

.nav-toggle { display: none; background: none; border: 1px solid var(--line-2); border-radius: 8px; width: 40px; height: 36px; cursor: pointer; }
.nav-toggle span { display: block; width: 17px; height: 2px; background: var(--ink); margin: 3px auto; border-radius: 2px; }

/* ------------------------------------------------------------------ hero */
.hero { padding: clamp(44px, 7vw, 86px) 0 clamp(34px, 5vw, 60px); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 560px;
  background: radial-gradient(60% 70% at 78% 0%, rgba(46,111,107,.10), transparent 68%),
              radial-gradient(50% 60% at 6% 12%, rgba(222,122,92,.09), transparent 70%);
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px;
  background: var(--surface); border: 1px solid var(--line);
  color: var(--brand-dk); font-size: .78rem; font-weight: 650; letter-spacing: .05em;
  text-transform: uppercase; padding: 6px 13px; border-radius: 999px; box-shadow: var(--sh-1);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero h1 { margin-bottom: 18px; }
.hero-lede { font-size: 1.08rem; color: var(--ink-2); max-width: 56ch; }
.hero-lede strong { color: var(--ink); font-weight: 650; }
.hero-key { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 26px; }
.chip {
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 13px; font-size: .84rem; font-weight: 550; color: var(--ink-2);
}
.chip b { color: var(--brand-dk); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-note { font-size: .87rem; color: var(--ink-3); margin-top: 14px; }

.hero-collage { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: repeat(3, 1fr); gap: 12px; }
.hero-collage figure { margin: 0; border-radius: var(--r); overflow: hidden; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--sh-1); }
.hero-collage img { width: 100%; height: 100%; object-fit: cover; }
.hero-collage .big { grid-column: span 2; grid-row: span 2; }

/* ------------------------------------------------------------- trust bar */
.trust { border-block: 1px solid var(--line); background: var(--surface); }
.trust ul {
  list-style: none; margin: 0; padding: 20px 0;
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px;
}
.trust li { text-align: center; }
.trust dt, .trust .lbl { display: block; font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.trust b { display: block; font-size: 1.28rem; color: var(--brand-dk); letter-spacing: -.02em; }

/* --------------------------------------------------------------- section */
.section { padding: clamp(48px, 6.5vw, 88px) 0; }
.section--alt { background: var(--surface); border-block: 1px solid var(--line); }
.section--tint { background: var(--surface-2); }
.sec-head { max-width: 66ch; margin-bottom: 36px; }
.sec-head p { color: var(--ink-2); font-size: 1.04rem; margin-bottom: 0; }
.sec-kicker { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }

/* ---------------------------------------------------------------- facts */
.facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.fact {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 24px; box-shadow: var(--sh-1);
}
.fact dt { font-weight: 700; color: var(--ink); margin-bottom: 6px; font-size: 1rem; }
.fact dd { margin: 0; color: var(--ink-2); font-size: .96rem; }

/* -------------------------------------------------------------- cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 26px 26px 28px; box-shadow: var(--sh-1);
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: .96rem; margin-bottom: 0; }
.card .num {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px;
  background: var(--brand-lt); color: var(--brand-dk); font-weight: 700; font-size: .95rem; margin-bottom: 16px;
}

/* ------------------------------------------------------------ products */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.prod-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--sh-1); transition: .2s ease;
}
.prod-card:hover { box-shadow: var(--sh-2); transform: translateY(-3px); border-color: var(--line-2); }
.prod-card .thumb { aspect-ratio: 4 / 3; background: var(--surface-2); overflow: hidden; }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.prod-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.prod-card h3 { font-size: 1.14rem; margin-bottom: 8px; }
.prod-card h3 a { color: var(--ink); }
.prod-card h3 a:hover { color: var(--brand); text-decoration: none; }
.prod-card p { color: var(--ink-2); font-size: .94rem; flex: 1; }
.prod-card .more { font-size: .89rem; font-weight: 650; color: var(--brand); }
.prod-tag {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px; margin-bottom: 10px; width: fit-content;
}
.tag-pvc { background: var(--brand-lt); color: var(--brand-dk); }
.tag-silicone { background: var(--accent-lt); color: #B85A3D; }
/* 自有主打产线（阿哲 2026-10-10：避震器 / 串珠挂链 / 电动工具铭牌 等自有强项） */
.tag-core { background: #FBF1D8; color: #8A6A17; margin-right: 6px; }
.own-plant {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 14px;
  padding: 8px 15px; border-radius: 999px; background: #FBF1D8; color: #8A6A17;
  font-size: .86rem; font-weight: 650; line-height: 1.4;
}
.own-plant::before { content: "\2713"; font-weight: 800; }

/* ------------------------------------------------------------ showcase */
.showcase { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(24px, 4vw, 48px); align-items: center; }
.showcase figure { margin: 0; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--sh-2); }
.showcase figcaption { font-size: .84rem; color: var(--ink-3); padding: 12px 16px; border-top: 1px solid var(--line); background: var(--surface); }
.shot-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.shot-strip figure { border-radius: var(--r); }
.shot-strip figcaption { display: none; }

/* -------------------------------------------------------------- tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .94rem; }
th, td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--surface-2); font-size: .8rem; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-2); font-weight: 700; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 600; color: var(--ink); width: 28%; }
td { color: var(--ink-2); }
.spec-table td:first-child { font-weight: 600; color: var(--ink); width: 34%; }

/* ------------------------------------------------------------- process */
.steps { counter-reset: s; display: grid; gap: 18px; }
.step {
  display: grid; grid-template-columns: 54px 1fr; gap: 20px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  padding: 22px 24px; box-shadow: var(--sh-1);
}
.step-n {
  counter-increment: s; width: 44px; height: 44px; border-radius: 12px;
  background: var(--brand); color: #fff; display: grid; place-items: center;
  font-weight: 700; font-size: 1.05rem;
}
.step h3 { margin-bottom: 6px; font-size: 1.1rem; }
.step p { margin: 0; color: var(--ink-2); font-size: .96rem; }

/* ------------------------------------------------------------------ faq */
.faq-list { display: grid; gap: 10px; max-width: 900px; }
.faq-item {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer; list-style: none; padding: 18px 52px 18px 22px; position: relative;
  font-weight: 620; font-size: 1.01rem; color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 1.35rem; color: var(--brand); font-weight: 400; line-height: 1;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item[open] summary { border-bottom: 1px solid var(--line); }
.faq-item .ans { padding: 16px 22px 20px; color: var(--ink-2); font-size: .97rem; }
.faq-item .ans p:last-child { margin-bottom: 0; }

/* ----------------------------------------------------------- materials */
.mat-split { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); margin-bottom: 30px; }
.mat-card { border-radius: var(--r-lg); padding: 26px; border: 1px solid var(--line); background: var(--surface); }
.mat-card.pvc { border-top: 4px solid var(--brand); }
.mat-card.sil { border-top: 4px solid var(--accent); }
.mat-card h3 { margin-bottom: 6px; }
.mat-card .sub { color: var(--ink-3); font-size: .88rem; margin-bottom: 14px; }

/* ---------------------------------------------------------------- forms */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .87rem; font-weight: 600; color: var(--ink-2); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .96rem; padding: 11px 14px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--r-sm);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(46,111,107,.13);
}
.field textarea { min-height: 132px; resize: vertical; }
.form-note { font-size: .84rem; color: var(--ink-3); margin-top: 14px; }

.contact-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(26px, 4vw, 52px); align-items: start; }
.contact-aside { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--sh-1); }
.contact-aside h3 { font-size: 1.05rem; }
.contact-aside ul { padding-left: 1.1em; font-size: .93rem; color: var(--ink-2); }
.dl-list { display: grid; gap: 2px; }
.dl-list div { display: grid; grid-template-columns: 106px 1fr; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: .93rem; }
.dl-list div:last-child { border-bottom: 0; }
.dl-list dt { color: var(--ink-3); font-weight: 600; }
.dl-list dd { margin: 0; color: var(--ink); }

/* ------------------------------------------------------------------ cta */
.cta-band {
  background: linear-gradient(135deg, var(--brand-dk) 0%, var(--brand) 62%, #3F8A82 100%);
  color: #fff; border-radius: var(--r-lg); padding: clamp(30px, 4.5vw, 52px);
  display: grid; grid-template-columns: 1.4fr auto; gap: 28px; align-items: center;
}
.cta-band h2 { color: #fff; margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.85); margin-bottom: 0; max-width: 62ch; }
.cta-band .btn-accent { background: #fff; color: var(--brand-dk); }
.cta-band .btn-accent:hover { background: #fff; color: var(--brand-dk); }

/* --------------------------------------------------------------- footer */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 52px 0 28px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 32px; }
.site-footer h4 { font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; font-size: .93rem; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: var(--ink-2); }
.site-footer a:hover { color: var(--brand-dk); }
.footer-bottom {
  margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  font-size: .85rem; color: var(--ink-3);
}
.footer-legal { font-size: .85rem; color: var(--ink-3); margin-top: 12px; }

/* --------------------------------------------------------------- pieces */
.page-head { padding: clamp(38px, 5.5vw, 66px) 0 clamp(22px, 3vw, 34px); border-bottom: 1px solid var(--line); background: var(--surface); }
.page-head h1 { margin-bottom: 14px; max-width: 22ch; }
.page-head .lede { font-size: 1.06rem; color: var(--ink-2); max-width: 68ch; margin-bottom: 0; }
.crumbs { font-size: .82rem; color: var(--ink-3); margin-bottom: 16px; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.crumbs li::after { content: "/"; margin-left: 6px; color: var(--line-2); }
.crumbs li:last-child::after { content: ""; }
.crumbs a { color: var(--ink-3); }

.prod-hero { display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(26px, 4vw, 52px); align-items: start; }
.prod-hero figure { margin: 0; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--sh-2); }
.prod-hero .tagline { font-size: 1.08rem; color: var(--ink-2); font-weight: 550; }
.prod-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.prod-gallery figure { margin: 0; border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); background: var(--surface); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { position: relative; padding-left: 26px; margin-bottom: 10px; color: var(--ink-2); font-size: .96rem; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .55em; width: 14px; height: 8px;
  border-left: 2.5px solid var(--brand); border-bottom: 2.5px solid var(--brand);
  transform: rotate(-45deg) scale(.8); transform-origin: left center;
}
.pill-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.pill-list li {
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 13px; font-size: .89rem; color: var(--ink-2); margin: 0;
}
.note {
  background: var(--brand-lt); border-left: 3px solid var(--brand); border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 16px 20px; font-size: .95rem; color: var(--ink-2);
}
.note strong { color: var(--brand-dk); }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }

/* ------------------------------------------------------------ 全宽图 */
.figure-wide { margin: 0; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--line); background: var(--surface); box-shadow: var(--sh-2); }
.figure-wide img { width: 100%; height: auto; display: block; }
.figure-wide figcaption { font-size: .86rem; color: var(--ink-3);
  padding: 12px 18px; border-top: 1px solid var(--line); background: var(--surface); }

/* ------------------------------------------------------------ responsive */
@media (max-width: 1024px) {
  .hero-grid, .showcase, .prod-hero, .contact-grid, .cta-band { grid-template-columns: 1fr; }
  .grid-3, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .trust ul { grid-template-columns: repeat(3, 1fr); }
  .hero-collage { grid-template-rows: repeat(2, 1fr); }
  .cta-band { text-align: left; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .main-nav { position: fixed; inset: 68px 0 auto 0; background: var(--surface); border-bottom: 1px solid var(--line);
             padding: 10px 20px 18px; box-shadow: var(--sh-2); display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 11px 12px; }
  .nav-toggle { display: block; margin-left: auto; }
  .header-tools .btn-primary { display: none; }
  .grid-3, .grid-2, .prod-grid, .facts, .two-col, .mat-split, .form-grid, .prod-gallery { grid-template-columns: 1fr; }
  .trust ul { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .shot-strip { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .step { grid-template-columns: 1fr; gap: 12px; }
  .dl-list div { grid-template-columns: 1fr; gap: 2px; }
}

@media print {
  .site-header, .cta-band, .site-footer .btn { display: none; }
  body { background: #fff; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------------------ banner */
.banner {
  position: relative; display: flex; align-items: center;
  padding: 0 clamp(18px, 5.5vw, 88px); background: #1d2b30;
}
/* 图片绝对铺满，容器高度由文案撑开 —— 无论字号多大都不会溢出/被裁（2026-10-11） */
.banner picture { position: absolute; inset: 0; z-index: 0; display: block; }
.banner img { width: 100%; height: 100%; object-fit: cover; display: block; }
.banner-copy {
  position: relative; z-index: 2; margin: clamp(44px, 5vw, 108px) 0;
  color: #fff; max-width: min(84rem, 92vw); text-wrap: balance;
}
/* 左侧轻遮罩：字号放大后仍保证白字清晰（2026-10-11） */
.banner::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(90deg, rgba(10, 20, 24, .52) 0%, rgba(10, 20, 24, .3) 42%, rgba(10, 20, 24, 0) 72%);
}
/* 字号 2026-10-11 第三次放大：整体 +50%（阿哲：「太小了，再放大50%」） */
.banner-kicker {
  display: inline-block; font-size: clamp(1.4rem, 2.4vw, 2.3rem); font-weight: 750; letter-spacing: .1em;
  text-transform: uppercase; color: #ffdccb; margin-bottom: 20px;
  text-shadow: 0 1px 16px rgba(0, 0, 0, .65);
}
.banner-line {
  margin: 0; font-size: clamp(3rem, 6.6vw, 6.6rem); font-weight: 800; line-height: 1.1;
  letter-spacing: -.025em; text-shadow: 0 3px 26px rgba(0, 0, 0, .6);
}
.banner-sub {
  margin: 22px 0 0; font-size: clamp(1.7rem, 2.7vw, 2.7rem); line-height: 1.5;
  color: #f4f8f9; text-shadow: 0 2px 16px rgba(0, 0, 0, .65);
}
@media (max-width: 720px) {
  .banner { padding: 0 16px; }
  .banner-copy { margin: 34px 0; max-width: none; }
  .banner-kicker { font-size: 1.2rem; margin-bottom: 12px; }
  .banner-line { font-size: clamp(2.5rem, 11vw, 3.4rem); }
  .banner-sub { font-size: clamp(1rem, 3.6vw, 1.25rem); margin-top: 14px; }
}

/* ---- Blog (2026-10-10) ---- */
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
@media (max-width: 820px) { .blog-grid { grid-template-columns: 1fr; } }
.blog-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; transition: box-shadow .2s, transform .2s, border-color .2s; }
.blog-card:hover { box-shadow: var(--sh-2); transform: translateY(-3px); border-color: var(--line-2); }
.blog-card .thumb { aspect-ratio: 16 / 9; background: var(--surface-2); overflow: hidden; }
.blog-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.blog-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.blog-card h3 { font-size: 1.2rem; margin-bottom: 8px; line-height: 1.35; }
.blog-card h3 a { color: var(--ink); }
.blog-card h3 a:hover { color: var(--brand); text-decoration: none; }
.blog-card p { color: var(--ink-2); font-size: .94rem; flex: 1; }
.blog-card .more { font-size: .89rem; font-weight: 650; color: var(--brand); }
.blog-date { font-size: .82rem; color: var(--ink-3); letter-spacing: .02em; margin-bottom: 8px !important; }
.article-body { max-width: 780px; }
.article-body h2 { margin: 34px 0 12px; font-size: 1.4rem; }
.article-body h3 { margin: 26px 0 10px; font-size: 1.15rem; }
.article-body p, .article-body li { font-size: 1.02rem; line-height: 1.75; color: var(--ink-2); }
.article-body p strong { color: var(--ink); }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; display: grid; gap: 10px; }
.article-hero { width: 100%; height: auto; border-radius: var(--r); margin-bottom: 26px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: .95rem; }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.spec-table th { background: var(--surface-2); font-weight: 650; color: var(--ink); }
.article-body .faq-item { border: 1px solid var(--line); border-radius: var(--r); padding: 14px 18px; margin-bottom: 10px; background: var(--surface); }
.article-body .faq-item summary { font-weight: 650; color: var(--ink); cursor: pointer; }