/* ============================================================
       ARUS — section non-hero beranda (ID + EN)
       Satu sungai SVG digambar oleh gulir, dari hulu ke muara.
       Hero, nav, garis datum, tombol, dan footer tetap di qmt.css.
       Tetap tanpa box-shadow dan tanpa gradasi: kedalaman dari garis
       tepi sungai dan bidang air.

       Tiga tata letak, dipilih dari lebar peta (assets/arus.js memakai angka yang sama):
         ≥ 1100px   dua tepi, sungai di tengah (.arus-desk)
         700–1099   sungai di talang kiri, tiap blok satu baris dua kolom
         < 700      sungai di talang kiri yang ramping, satu kolom
       ============================================================ */
    :root {
      --air: #CFE3E6;            /* badan air */
      --tepi: #7B8A8F;           /* tepi kolom isian: 3,6:1 di atas putih */
      --corridor: 248px;         /* lorong sungai di antara dua tepi */
      --f-serif: 'Newsreader', Georgia, serif;
    }

    /* Huruf nama perairan di peta: serif miring. */
    .serif {
      font-family: var(--f-serif);
      font-style: italic;
      font-weight: 500;
      line-height: 1.03;
      letter-spacing: -0.014em;
      text-wrap: balance;
      color: var(--ink);
    }
    /* keterangan peta: mono kecil, huruf biasa (bukan kapital) */
    .kml { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--teal); }
    .text-link {
      display: inline-block; padding: 12px 0; font-weight: 700; font-size: 14.5px; color: var(--teal);
      text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 4px;
    }
    .text-link:hover { color: var(--oranye-text); }

    /* ---------- Hulu: jembatan dari hero ---------- */
    .hulu { padding: clamp(72px, 10vw, 132px) 0 clamp(16px, 3vw, 36px); }
    .hulu-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(28px, 6vw, 96px); align-items: end; }
    .hulu-title { font-size: clamp(40px, 6.4vw, 92px); }
    .hulu-lede { color: var(--ink-soft); max-width: 46ch; font-size: clamp(16px, 1.5vw, 18px); }

    /* ---------- Peta: sungai di belakang, konten di tepinya ---------- */
    .chart { position: relative; --gutter: 46px; }
    .river { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; overflow: visible; }
    .river .bank, .river .t-bank { fill: none; stroke: var(--teal); stroke-linecap: round; }
    .river .water, .river .t-water { fill: none; stroke: var(--air); stroke-linecap: round; }
    .river .t-bank { stroke-width: 9; }
    .river .t-water { stroke-width: 6.4; }
    .river .s-bank { fill: none; stroke: var(--teal); stroke-width: 4.6; stroke-linecap: round; }
    .river .s-water { fill: none; stroke: var(--air); stroke-width: 2.4; stroke-linecap: round; }
    .river .trib-name { font-family: var(--f-serif); font-style: italic; font-weight: 500; letter-spacing: -0.012em; fill: var(--teal); }
    .river .river-name { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: 17px; letter-spacing: 0.42em; fill: var(--teal); }
    .river .jetty { fill: none; stroke: var(--ink); stroke-width: 3; }
    .river .pier { fill: none; stroke: var(--ink); stroke-width: 5; }
    .river .mark { fill: var(--ink); }
    .river .leader { fill: none; stroke: var(--ink-mute); stroke-width: 1.2; stroke-dasharray: 2 5; }
    .river .fix { fill: none; stroke: var(--ink); stroke-width: 1.5; }
    .river .buoy-mark { fill: var(--oranye); stroke: var(--ink); stroke-width: 1.4; }
    .river .mouth { fill: var(--air); }
    .river .mouth-bank { fill: none; stroke: var(--teal); stroke-width: 1.5; }
    .river .spring { fill: var(--zenit); stroke: var(--teal); stroke-width: 1.5; }
    .river .boat path { fill: var(--oranye); stroke: var(--ink); stroke-width: 1.3; stroke-linejoin: round; }
    .river .note { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: 0.03em; fill: var(--ink-mute); }

    .reach { position: relative; z-index: 1; padding: clamp(60px, 8vw, 108px) 0 clamp(32px, 5vw, 60px); }
    .reach-head { width: calc(50% - 30px); }
    .reach-head h2 { font-size: clamp(36px, 5.2vw, 74px); }
    .reach-head p { margin-top: 18px; color: var(--ink-soft); max-width: 44ch; }
    .reach-head p b { color: var(--ink); }
    .reach-head .btn { margin-top: 26px; }
    .banks { list-style: none; margin-top: clamp(36px, 5vw, 60px); }
    .banks > [data-bank="R"] { margin-left: auto; }

    /* ---------- Mata air: sistem yang disambungkan + teknologi ---------- */
    .springs { padding: clamp(36px, 5vw, 60px) 0 clamp(8px, 2vw, 24px); }
    .springs-grid { display: grid; grid-template-columns: minmax(0, 1fr) var(--corridor) minmax(0, 1fr); }
    .springs-col[data-bank="L"] { grid-column: 1; text-align: right; }
    .springs-col[data-bank="R"] { grid-column: 3; }
    .springs-col ul { list-style: none; margin-top: 8px; }
    .stream { font-family: var(--f-serif); font-style: italic; font-size: 20px; line-height: 1.62; color: var(--teal); }
    /* panjang anak-anak air dibuat tidak seragam supaya terbaca seperti hulu sungai, bukan sisir */
    @media (min-width: 1100px) {
      .springs-col[data-bank="L"] .stream:nth-child(2) { padding-right: 52px; }
      .springs-col[data-bank="L"] .stream:nth-child(3) { padding-right: 16px; }
      .springs-col[data-bank="L"] .stream:nth-child(4) { padding-right: 78px; }
      .springs-col[data-bank="L"] .stream:nth-child(5) { padding-right: 30px; }
      .springs-col[data-bank="L"] .stream:nth-child(6) { padding-right: 60px; }
      .springs-col[data-bank="R"] .stream:nth-child(1) { padding-left: 34px; }
      .springs-col[data-bank="R"] .stream:nth-child(3) { padding-left: 62px; }
      .springs-col[data-bank="R"] .stream:nth-child(4) { padding-left: 20px; }
      .springs-col[data-bank="R"] .stream:nth-child(5) { padding-left: 48px; }
    }

    /* ---------- Layanan: anak sungai ---------- */
    .trib { width: calc(50% - var(--corridor) / 2); min-height: 212px; }
    .trib + .trib { margin-top: -30px; }
    .trib h3 { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(27px, 7vw, 34px); line-height: 1.1; letter-spacing: -0.012em; color: var(--teal); }
    .trib .feat-tag { margin-bottom: 10px; justify-self: start; }
    .trib p { margin-top: 10px; color: var(--ink-soft); max-width: 42ch; font-size: 16px; }
    .trib p.trib-out { color: var(--ink); font-size: 15px; }
    .trib-out .kml { margin-right: 8px; }
    /* dua tepi: nama layanan ditulis mengikuti anak sungai di SVG; judul HTML tetap ada untuk pembaca layar */
    .arus-desk .trib { padding-top: 68px; }
    .arus-desk .trib h3 { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .arus-desk .trib[data-bank="R"] { display: flex; flex-direction: column; align-items: flex-end; }
    .arus-desk .trib[data-bank="R"] p { text-align: right; }

    .buoy { width: calc(50% - var(--corridor) / 2 - 28px); margin-top: -64px; }
    .buoy p { color: var(--ink-soft); max-width: 38ch; }
    .buoy p b { color: var(--ink); }
    .buoy .btn { margin-top: 16px; }

    /* ---------- Untuk siapa: empat kelompok klien di dua tepi ---------- */
    .client { width: calc(50% - var(--corridor) / 2); }
    .client + .client { margin-top: -40px; }
    .client h3 { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(26px, 2.8vw, 34px); line-height: 1.1; letter-spacing: -0.012em; color: var(--ink); }
    .client dl { margin-top: 14px; display: grid; gap: 12px; }
    .client dd { margin: 4px 0 0; color: var(--ink-soft); font-size: 16px; max-width: 42ch; }
    .client dl > div + div dd { color: var(--ink); }

    /* ---------- Paket Temukan: legenda, hasil kerja, ukuran ---------- */
    .spec.legend { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 28px; margin-top: 30px; max-width: 46ch; background: none; border: 0; border-radius: 0; overflow: visible; }
    .spec.legend > div { background: none; padding: 14px 0 0; border-top: 1.5px solid var(--teal); }
    .spec.legend dt { font-size: 12px; letter-spacing: 0.03em; text-transform: none; color: var(--teal); }
    .temukan-block h3.serif { font-size: clamp(26px, 2.8vw, 34px); line-height: 1.1; }
    .temukan-block > p { margin-top: 16px; color: var(--ink-soft); max-width: 46ch; }
    .outputs, .sizes, .pembeda { list-style: none; }
    .outputs { counter-reset: hasil; margin-top: 18px; }
    .outputs li, .pembeda li { position: relative; padding: 12px 0 12px 40px; border-top: 1px solid rgba(13, 33, 40, 0.16); color: var(--ink-soft); font-size: 15.5px; }
    .outputs li { counter-increment: hasil; }
    .outputs li::before, .pembeda li::before { position: absolute; left: 0; top: 16px; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--teal); }
    .outputs li::before { content: counter(hasil, decimal-leading-zero); }
    .outputs b { display: block; color: var(--ink); }
    .block-note { margin-top: 14px; max-width: 52ch; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; line-height: 1.6; color: var(--ink-mute); }
    .sizes { margin-top: 18px; }
    .sizes li { padding: 14px 0; border-top: 1px solid rgba(13, 33, 40, 0.16); }
    .size-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
    .size-head b { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: 25px; line-height: 1.1; color: var(--ink); }
    .sizes li > p + p { margin-top: 6px; color: var(--ink-soft); font-size: 15.5px; max-width: 46ch; }

    /* ---------- Proses: dermaga ---------- */
    .landing { width: calc(50% - 152px); min-height: 172px; }
    .landing + .landing { margin-top: -12px; }
    .landing h3 { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(25px, 2.6vw, 33px); line-height: 1.1; letter-spacing: -0.012em; margin-top: 10px; color: var(--ink); }
    .landing p { margin-top: 10px; color: var(--ink-soft); font-size: 15.5px; max-width: 40ch; }
    .landing p b { color: var(--ink); }
    .arus-desk .landing[data-bank="L"] { text-align: right; }
    .arus-desk .landing[data-bank="L"] p { margin-left: auto; }

    /* ---------- Tentang: dua tepi berpasangan ---------- */
    .pair { display: grid; grid-template-columns: minmax(0, 1fr) var(--corridor) minmax(0, 1fr); align-items: start; }
    .pair > :first-child { grid-column: 1; }
    .pair > :last-child { grid-column: 3; }
    .pair + .pair { margin-top: clamp(64px, 8vw, 110px); }
    .pair .reach-head { width: auto; }
    .tentang-side { padding-top: clamp(8px, 2vw, 28px); }
    /* tiga pembeda: daftar bernomor di bawah pernyataan posisi */
    .pembeda { counter-reset: beda; margin-top: 24px; max-width: 46ch; }
    .pembeda li { counter-increment: beda; font-size: 16px; }
    .pembeda li::before { content: counter(beda, decimal-leading-zero); }
    .pembeda b { color: var(--ink); }

    .soundings { list-style: none; display: grid; gap: 22px; }
    .sounding { display: flex; align-items: baseline; gap: 16px; }
    .s-num { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(52px, 6vw, 84px); line-height: 0.9; color: var(--ink); min-width: 2.2ch; font-variant-numeric: lining-nums tabular-nums; }
    .s-num i { color: var(--oranye-text); }
    .s-lbl { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; line-height: 1.5; color: var(--ink-soft); max-width: 14ch; }

    /* catatan peta: kutipan kulminasi, digantung pada tanda kutipnya */
    .chart-note { margin-top: clamp(40px, 5vw, 64px); }
    .chart-note blockquote { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(20px, 2.2vw, 27px); line-height: 1.32; color: var(--ink); text-indent: -0.42em; max-width: 36ch; }
    .chart-note figcaption { margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(13, 33, 40, 0.16); font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--oranye-text); }

    .skipper-id { display: grid; grid-template-columns: 88px 1fr; gap: 6px 20px; align-items: center; }
    .skipper-id img { grid-row: span 2; width: 88px; height: 88px; border-radius: 8px; border: 1px solid var(--garis); object-fit: cover; background: var(--ink); }
    .skipper-id h3 { align-self: end; font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(28px, 3vw, 36px); line-height: 1.05; color: var(--ink); }
    .skipper-id .kml.role { align-self: start; color: var(--ink-mute); }
    .skipper p.bio, .abroad p.bio { margin-top: 20px; color: var(--ink-soft); max-width: 62ch; }
    .skipper p.bio b, .abroad p.bio b { color: var(--ink); }

    /* stack: terbuka di desktop, ringkas di layar sempit (ditutup skrip halaman) */
    .kit-more { margin-top: 22px; }
    .kit-more summary {
      display: inline-flex; align-items: center; gap: 10px; min-height: 44px; cursor: pointer; list-style: none;
      font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--teal);
    }
    .kit-more summary::-webkit-details-marker { display: none; }
    .kit-more summary::after {
      content: ""; width: 7px; height: 7px; margin-top: -4px;
      border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg); transition: transform 0.2s ease;
    }
    .kit-more[open] summary::after { transform: rotate(-135deg); margin-top: 3px; }
    .kit-more summary:hover { color: var(--oranye-text); }
    .kit { margin-top: 6px; display: grid; gap: 12px; }
    .kit-row { display: grid; grid-template-columns: 108px 1fr; gap: 10px; align-items: baseline; }
    .kit-row > .kml { color: var(--ink-mute); }
    .kit-row .stack-chips { gap: 7px; }
    .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
    .abroad { margin-top: clamp(96px, 12vw, 190px); }
    .abroad h3 { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(26px, 2.8vw, 34px); line-height: 1.1; color: var(--ink); }

    /* ---------- Karya: pelabuhan ---------- */
    .port { position: relative; width: calc(50% - 152px); color: var(--ink); }
    /* satu tautan di judul; pseudo-elemennya membuat seluruh blok bisa diklik */
    .port-link { color: inherit; text-decoration: none; }
    .port-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
    .port-link:focus-visible { outline: none; }
    .port-link:focus-visible::after { outline: 2px solid var(--ink); outline-offset: 6px; border-radius: 6px; }
    .port + .port { margin-top: -72px; }
    .port-thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--ink); border: 1.5px solid var(--teal); border-radius: 6px; transition: border-color 0.3s ease; }
    .port-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
    .port-thumb.contain img { object-fit: contain; padding: 16px; }
    .port-body { padding-top: 18px; }
    .port-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
    .port-status { display: inline-flex; align-items: center; gap: 7px; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--ink-soft); }
    .port-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
    .port h3 { font-family: var(--f-serif); font-style: italic; font-weight: 500; font-size: clamp(30px, 3.4vw, 44px); line-height: 1.05; letter-spacing: -0.012em; margin-top: 6px; color: var(--ink); }
    .port-type { display: block; margin-top: 6px; color: var(--ink-mute); }
    .port-lede { margin-top: 10px; color: var(--ink-soft); font-size: 15.5px; max-width: 46ch; }
    .port-stat { margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(13, 33, 40, 0.16); font-family: var(--f-mono); font-size: 12px; color: var(--ink); }
    .port-stat b { color: var(--oranye-text); font-weight: 700; }
    .port-go { display: inline-block; margin-top: 12px; font-weight: 700; font-size: 14.5px; color: var(--teal); text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 4px; }
    .port:hover .port-thumb { border-color: var(--oranye); }
    .port:hover .port-go { color: var(--oranye-text); }
    .mouth-space { height: clamp(150px, 20vw, 250px); }

    /* ---------- Muara: kontak ---------- */
    .muara { position: relative; z-index: 1; margin-top: -1px; background: var(--air); padding: clamp(24px, 4vw, 48px) 0 clamp(96px, 11vw, 150px); }
    .muara-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 90px); align-items: start; }
    .muara h2 { font-size: clamp(38px, 5.6vw, 80px); }
    .muara-lede { margin-top: 20px; max-width: 46ch; color: var(--ink-soft); }
    .muara .kontak-info li { border-bottom-color: rgba(23, 107, 115, 0.28); }
    .muara .kontak-info .ic, .muara .socials a { border-color: rgba(23, 107, 115, 0.3); }
    .muara .kontak-info .lbl { color: var(--ink-soft); }      /* kontras di atas bidang air */
    .muara .kontak-info a { display: inline-block; padding: 12px 0; margin: -12px 0; }   /* target sentuh 44px */
    .muara .kontak-info a:hover { color: var(--teal); text-decoration: underline; text-underline-offset: 4px; }   /* oranye-text hanya 3,8:1 di atas air */
    .muara .form-card { border-color: rgba(23, 107, 115, 0.4); }
    .muara .form-note a { text-decoration: underline; text-underline-offset: 3px; }

    /* form: tepi kolom yang terlihat, galat di tempat, topik yang terbawa, dan status setelah kirim */
    .form-card .field input, .form-card .field textarea { border-bottom-color: var(--tepi); caret-color: var(--oranye-deep); }
    .form-card .field input::placeholder, .form-card .field textarea::placeholder { color: var(--ink-mute); opacity: 1; }
    .form-card .field input:focus, .form-card .field textarea:focus { border-bottom: 2px solid var(--oranye-deep); padding-bottom: 11.5px; }
    .form-card .field [aria-invalid="true"] { border-bottom: 2px solid var(--oranye-text); padding-bottom: 11.5px; }
    .field-error { margin-top: 8px; font-size: 14px; font-weight: 600; color: var(--oranye-text); }
    .form-topic { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
    .form-topic .chip { color: var(--ink); border-color: var(--tepi); }
    .topic-clear {
      display: grid; place-items: center; width: 44px; height: 44px; margin: -10px -8px -10px -12px;
      border: 0; background: none; color: var(--ink-mute); cursor: pointer;
    }
    .topic-clear:hover { color: var(--oranye-text); }
    .form-status { margin-top: 18px; padding-top: 16px; border-top: 1.5px solid var(--teal); font-size: 15px; color: var(--ink-soft); }
    .form-status:focus { outline: none; }
    .form-status b { color: var(--ink); }
    .form-status-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 18px; margin-top: 6px; }
    .form-status-actions a, .link-btn {
      display: inline-block; padding: 10px 0; border: 0; background: none; cursor: pointer;
      font: inherit; font-weight: 700; color: var(--teal);
      text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 4px;
    }
    .form-status-actions a:hover, .link-btn:hover { color: var(--oranye-text); }

    /* ============================================================
       < 1100px: sungai di talang kiri, semua blok di kanannya
       ============================================================ */
    @media (max-width: 1099px) {
      .hulu-grid { grid-template-columns: 1fr; }
      .springs-grid, .pair { display: block; }
      .springs-col[data-bank="L"] { text-align: left; }
      .springs-col + .springs-col { margin-top: 22px; }
      .springs-col ul { display: flex; flex-wrap: wrap; gap: 0 18px; }
      .reach-head, .trib, .landing, .port, .buoy, .springs-col, .tentang-side, .skipper, .abroad,
      .client, .temukan-block, .pair .reach-head { width: auto; padding-left: var(--gutter); }
      .banks > [data-bank="R"] { margin-left: 0; }
      .trib, .landing { min-height: 0; }
      .trib + .trib, .landing + .landing, .client + .client { margin-top: 40px; }
      .pair > .temukan-block:last-child { margin-top: 44px; }
      .buoy { margin-top: 44px; }
      .port + .port { margin-top: 56px; }
      .tentang-side { margin-top: 44px; }
      .abroad { margin-top: 64px; }
    }

    /* 700–1099px: tiap blok satu baris dua kolom, supaya lebar layar terpakai */
    @media (min-width: 700px) and (max-width: 1099px) {
      .chart { --gutter: 84px; }
      .trib, .landing { display: grid; grid-template-columns: minmax(0, 0.4fr) minmax(0, 0.6fr); column-gap: 36px; align-items: start; }
      .trib > .feat-tag, .trib > h3, .landing > .kml, .landing > h3 { grid-column: 1; }
      .trib > p, .trib > .text-link { grid-column: 2; }
      .trib > p { margin-top: 4px; }
      .landing > p { grid-column: 2; grid-row: 1 / span 2; margin-top: 0; }
      .client { display: grid; grid-template-columns: minmax(0, 0.4fr) minmax(0, 0.6fr); column-gap: 36px; align-items: start; }
      .client dl { margin-top: 4px; }
      .port { display: grid; grid-template-columns: minmax(0, 0.44fr) minmax(0, 0.56fr); column-gap: 36px; align-items: start; }
      .port-body { padding-top: 0; }
      .soundings { grid-template-columns: repeat(3, auto); justify-content: start; gap: 22px 44px; }
      .sounding { display: grid; gap: 8px; }
    }

    @media (max-width: 899px) {
      /* muara satu kolom: judul, lalu form, baru daftar kontak */
      .muara-grid { grid-template-columns: 1fr; gap: 0; }
      .muara .kontak-info { display: contents; }
      .muara .form-card { order: 1; margin-top: 30px; }
      .muara .kontak-info ul { order: 2; }
      .muara .kontak-info .socials { order: 3; }
    }

    @media (max-width: 699px) {
      .kit-row { grid-template-columns: 1fr; gap: 6px; }
    }